US852124A - Bed-motion for cylinder printing-presses. - Google Patents

Description

No. 852,124. PATENTED APR. 30, 1907. B. F. LEILIGH.

BED MOTION FOR CYLINDER PRINTING PRESSES.

APPLIOATION FILED 0OT.23, 1902. RENEWED JUNE 4, 1906.

8 SHEETS-SHEET I.

[NV NTORL WITNESSES D APE. 30; 190'].

E. F. LBILICEL BED MOTION FOR CYLINDER. PR1

APPLIUATION FILED 0O'l.2'3, 1902. RENEWED HUN. A, 1906.

8 BHEBTS--SEZBET EATENTBD APR. SO, 1907.

E. P. LEILIGH. MOTION FOR CYLINDER PRINTING PRESSES.

APPLIGATIOH FILED 0GT.23, 1902. RENEWED JUNE 1906.

8 SHEETS-SHEET 3,

WITNESSES; I lg/VEfi/TOR.

No. 852,124. PATENTED-APR. 30, 1907. E. F. LEILIGH. BED MOTION FOR CYLINDER PRINTING PRESSES.

APPLICATION FILED OUT/23. 1902. RENEWED JUNE 4, 1906.

8 SHEETS-SHBET 4.

/\ WITNESSES.-

PAT

E. F. LEILICH.

BED MOTION FOR CYLINDER PRINTING PRESSEKB,

RENEWED mm 4, 190a.

APPLIUATION FILED OOT.23, 1902' 8 SHEETS--SEEET $4 I VITNESSES:

110352.124. PATENTBD APR. 30. 1907,

. E. P. LEILIGH. BED MOTION FOR CYLINDER PRINTING PRESSES.

APPLICATION FILED 0012-23, 1902. RENEWED JUIE 4, 1908.

B SHEETS-SHEET 7.

1 II I W 8 w 68 WITNESSES.- Ow,

No. 852,124. PATENTED APR. 30, 1907. E. F. LEILICH. BED MOTION FOR CYLINDER PRINTING PRESSES.

APPLICATION FILED 0OT.23, 1902. RENEWED JUNE 4,1906.

8 SHEETS-SHEET -8.

to having a Hat bed. and typ UNITED srAgps PrilENT OFFICE.

EDWIN F. L'EILICH, OF SAN FRANCISOQ OA-LIFORNIA. B ED-MGTION FOR CYLINDER PRINTING-PRESSE S.

Specification of Letters Patent.

Patented April 30, 1907.

-App1ioatlon filed Octobeih3, 1902. Renewed June 4, 1908. Serial No. 320.065.

To all whom it may'concern:

Beit known that I, EDWIN F. LEILIoH, a citizen of the United States, residing in the city and-countyol'" San Francisco and State ,5 'of 'California; have invented certain new and useful Improvements in Bed-Motions for Cyhnder Printing-Presses, of which the following is a specification.

My iuventlo'n relates to printing presses e form, and my objects 'are first; to provide means of great strength, rigidity and simplicity, for dr ving the bed to and. fro, having a minimum amount of gearing between the cylinder and .1 bed during the. print stroke, with an isochronous movement-re ative to the cylinder while printing, and for reversing the direction of movement of the bed with sub stantially a crank movement, and by which the bed shall be driven.dur'ing its'printing stroke by one mechanism, durmg its return or non rintingstroke by another mechanisin and? reversed in its direction of movement by a mechanism diiierent from either of to cause the transfer of the control of the bed, from the mechanisms to drive the bed to and fro, to the mechanism for reversing its direction of motion, and vice versa, to take lace smoothly and at the same .speed. T d to increase the speed of operation. Fourth; to secure and maintain a better register. Fifth; to provide means for easily and efficiently lubricating interior parts.

mafter described over all others known to me, are many and great.

In order to secure a higher rate of speed the kinetic energy of the recifprocating parts to be arrested at each end 0 the to and fro movement of the bed should be as smallas possible, the weight of metal in the bed properly distributed and as little as is consistent with the heaviest impression that may be placed upon it To get a perfect register reuires a mechanism to drive the bed to and 'while printing with an isochronous motion relative to the printing surface of the cylinder; this provided, the great pressure of the cylinder on" the bearers, necessary in many cases toprevent slipping or laggm bctweenthem maybe relieved, and a rac on the bed engaging with a gear on the cylinder to force and compel a uniform relative motionof thecylinder and bed rendered .un-

those used to-drive it to and fro. Second The advantages of tne construction, here-.

In the presses in common use with which I amdamiliar, the bed is driven in both directions by one and the same means, thus causing extra wear, loss of motion and consequent loss of re ister. To obtain the desired higher speed I firmly secure to'a bed properly deslgned and of sufficient weight to stand the heaviest strain of the impression, a single rack with teeth projecting downwardl and 'but little below the under surface of t e bed and.engaged by the means hereinafter de scribed, to drive the bed to and fro, and two hangers with studs and rollers thereon, acting 1n conjunction with means to reverse the direction of motion of the bed, both the rack and hangers being very strong and rigid, and adding but little to the wei ht of the bed, in comparison with, the eavy double'r'acks with oppositely facing teeth, gates and other devices, carried upon the beds of presses in common use. I secure a more perfect register by the means hereinafter described,.by which the cylinder and bed are driveuwlth an isochronous movement at the printing line, with a less amount of gearing between them during the printing stroke than during the returnstroke.

I also drive the bed throu hout the printing stroke by separate and distinct means, which do no work on the return or non printin stroke, and which engage with the bed rac in a separate and distinct path of travel. I return the bed on its non printing stroke by another separate and distinct means, likewise engaging with the rack in a separate and distinct path of travel, and-I accomplish the reversal of the direction of the movement of the bed by further means different and distinct from either. I secure rigidity and strength, by supporting the drivim gears and reversing cam respectively around and on the same shaft between two bearings comparatively near together and to maintain a better register during long use, without renewing worn parts, I provide simpleadjustable means for taking 11 lost motion in the teeth of the gearing be ween the cylinder and bed. By this particular construction and combination of parts, I am able to use a comparatively low frame and also, as hereinafter described, to easily lubricate. parts that would otherwise be diflicult sotodo;

My invention therefore-resides iiithe novel construction, combmationfand arrangement of parts for the aforesaid ends as hereinafter more'clearly interior parts and their connections, the frame work of the press being omitted. Fig. 2 is an end elevation with the bed and frame in cross section on aline v,

in Fig. 3, looking toward the front of the press, or in the direction of the arrow. Fig. 3 is a plan view with the bed removed, the rack partially broken and with the reversing hangers attached to-the bed and supports for the latter in cross-section, the cylinder being I omitted. Fig. 4 is an end elevation in cross section of the bed rack, the printing stroke gear, thereturn' stroke gear, the sleeve and main shaft extending through-it, and other connected parts. Fig. 5 shows a part of the eccentric oscillatmg mechanism separated from its connection with the other parts illustrated in Fig; 4. Fig. 6 is a side e'leva-- tion of Fig. 4 with the main shaft and parts supported by it cut ofl online W and viewed toward the left hand, the printing stroke gear is shown as en aged with the bed rack, and

the return stro e gear as out of en agement therewith, the latter gear being bro en away to show clearly the printing stroke gear be: hind it, the gear to the right is a part of the means for rotating the return stroke gear inthe opposite direction to the printing stroke gear. Figs. 7, 8 are side and end elevations of the eccentrics and sleeve, in the position in which the eccentrics are placed when the printing stroke gear is engaged with, andthe return stroke gear is disengaged from, the bed rack. but show the eccentrics in their opposite positions on the sleeve which the printing stroke gear is disengaged from, and the return stroke gear is engaged with, the bed rack. The eccentrics and sleeve are illustrated in broken cross section, to show the oil-chambers and conduits for conveying oil from an outsidesupply to the'several SUI-1 faces. in frictional contact. 1 Figs. 11, 12 are side and end elevations'of the sleeve and part of the shaft, with the formerin broken cross sections to show the oil-chamber. Figs. 13

1 in various corresponding positions, and with the connection between the printing stroke gear and reversing cam likewise in differentv Figs. 9, 10 are similar to Figs. .7, 8.

pitch, securedto each other and provided with means for adjusting one of the series relatively to the other along the pitch lines.

Fig. 21 is a cross sectionof Fig. 19 on line wa'. Fig. 22 is a diagrammatic view of the reversing cam, showing an approximative cam path, with the cam roll in its entering position on thefirst ordinate, and illustrating the movementof the roll in the cam path along the ordinal lines during each 15 of rotation of the cam.

In the illustration and description of this invention, many of the usual and necessary parts in printing presses of like characterhave been omitted, as not essential to a dlear understanding of it. In the drawings, a frame 1 supports one of the ends of each of the shafts shown in Figs. 2, 3 their opposite ends being supported in one or more bearings in uprights 1 1 7 rising from" the girth 2 secured between the side frames of the press. Some of these upri hts serve to support the bed 3 on rollers as s iown. 'A bed "3 is moved to and fro as hereinafter described, and is pro- ,vided with a rack 3 with teeth projecting downwardly, firmly attached to the under side of the bed and of sufiicient width to enable the gear wheels hereinafter described, to A has firmly secured to it a broad pinion 5*, en' v gaging with a gear 6, fixed upon the main;

shaft 6 and also with'a gear 7, secured to one end of a shaft 7 Themain shaft 6*, as seen in'Figs. 2, 3', 4 supports between the uprights 1*, 1 a printing stroke gear 8, rotatably mounted on an eccentric 9 oscillated u on a sleeve 12, supported around the main s aft 6", asherein after described.) In Fig. 4

the printing stroke gear 8 is'illustrated as in f A return stroke gear withthe bed rack 3 I gear 10 is rotatably mounted by the side of the printing stroke gear 8 upon an eccentric 9 connected to the eccentric 9 in about an opposite position and likewise surrounding the sleeve 12. secured to the main shaft 6 ,.and transmits niotioirto the printing stroke-gear 8' through the stud 8 secured to the side of theprinting stroke gear 8 and extending into a slot 11, formed in the reversing cam 11', the stud 8 carries on its free end a slide block 8 by A reversing cam 11, 1s rigidly 1 rzo which a better wearing surfacei's obtained between it and the walls of the slot 11? The return stroke gear 10 is rotated in an opposite direction to theiprinting stroke gear 8 by the gear 7 fixed upon one end of the shaft 7% Th e gears 8 and 10 are alternately moved, I

, relative to the movement of the rack 3*.

the movement of the rack 3 as hereinafter described, in and out of the path of the rack 3, in about a vertical plape 11 order that the bed should be driven to and fro at a uniform rate of speed, more particularly throughout the printing stroke, I have invented the means hereinafter described, whereby the centers of the gears 8 and 10 respectively, when in engagement with the rack 3, always coincide with the center of the main shaft 6* around which they independently are supported, and drive the rack 3", and bed 3, to and fro isochronously relatively to the printing surface of the cylinder. When the printing stroke gear 8 is disen-v gaged from the rack 3*, and in its lowest position, it isdriven by its'connection8, 8 with 11, with a variable motion, caused by the relative change of centers of the printing stroke gear 8, and the reversing cam 11, but

as the gear Sis at this time out .of engage+ ment with the rack 3, no undesirable. effect follows. The return stroke gear 10 rotates at a uniform rate of motion in either of its positions. Immediately surrounding the main shaft 6 and placed eccentrieally thereto, is a sleeve 12, one'end of which enters a bearing in the upright 1, where it is held ina fixed position by suitable means, as a screw shown in Figs. 3, 4 with its line of centers placed in about'a vertical position relative to Referring to Fig. 4"it might seem that the. sleeve 12supports the main shaft 6*, which is not the fact, the weight of the latter being sustained by I the bearings in the frame 1 and upright'l The eccentric sleeve 12 extends between the inside face of the reversing earn 11 and the upright 1 to form a bearing for the eccentries 9, 9 which are oscillated uponit, these eccentrics are preferably made in one piece and placed oppositely relatively to each other, as illustrated in Figs. 7 to 10 inclusive. F igs. 7, 8 show the eccentric 9- on which the printing stroke gear 8 is supported, in its up- "per position, with the latter engaged with the rack 3 and the eccentric 9 on which the return stroke gear is supported, disengaged from the rack 3*, and in its lower position.

Figs. 9-, 1O illustrate the eccentrics 9, 9 in op osite positions tothose in Figs. 7, 8. .In or er-to move the gears 8 and 10 in and out of the path of the rack 3, the eccentrics 9,

9' must have a throw or vertical movement equal to the full depth of the teeth of the gears 8 and 10, plus a sufficient amount for the safe-clearance of their teeth from the.

. rack teeth, when said gears are alternately in their lowest positions.

Referring to Figs. 6, 8, 10' and 12 two dotted lines is, 1 will be seen extending from the vertical center of the main shaft 6* below its horizontal center line, the'distance be-j tween thehorizontalcenter line and line representing the. throw of the eccentrics '9,

that the gears 8 and. 10 and cam 11 ter of the main shaft 6 and the cam 11 fixed.

upon it and by which the gear 8 is driven.

In order to use the printing stroke gear 8 and return stroke gear 10 in combination with a single rack with downwardly projecting teeth secured to the under side of. .the bed, it is necessary that each of said gear wheels should be alternately moved in and out of the ath of the rack at certain times, in order .to o this the sleeve 12 is essential, as by placing it eccentrically relative to the shaft 6 in a fixed osition I am able to locate the centerof osci lation of the eccentrics 9, 9 below the center of the shaft 6*,and upon the intersection of the vertical center line and horizontal line 7c, and to cause the concentric centers of the eccentrics to describe a curved path in their movement around the'center of oscillation, from their upper to theirlower positions and vice versa, as illustrated in igs. 8, 1'0 and 12. The effect of this upon the printing stroke gear 8 is, that in its upper position, in which it ise'ngaged with the rack 3, its center is concentric with that of the shaft 6 and it is rotated with an isochronous movement, and when in its'lower position and disengaged from the rack 3, and consequentl 'doing no work, it is rotated with a variab e motion. The surfaces of the eccentrics 9, 9 are. therefore, when in their upper positions, concentric to, and struck from, the intersection of the" vertical and horizontal center lines through the center of the main shaft 6*, and when in their lower positions, are concentric to, and struck from, the intersection of the line 1 with the vertical center line of the shaft 6 and fitted to be oscillated upon the sleeve 12. A washer 13 held by a screw to the side of the eccentric 9 holds the return stroke'gear 10 in position. I prefer shall ro-l tate threetimes during each reciprocation of the bed, but other proportions may be used if desired.

The surface of the sleeve 12 is concentric to, and is struck from, the intersection of the line k with the vertical center line of the main shaft 6*. In order that the eccentrics 9, 9 may be easily and efficiently lubricated Where they arein frictional contact with the gears 8 and 10 and the sleeve 12, .the latter being also in frictional contact with the main shaft 6, I make in the thicker part of the .is held in a fixed position as seen in Figs. 4

and 8 to 12 inclusive into which may be 22 is a diagrammatic view of the reversing cam 11, corresponding in position to 16 and showing an approximative camtance traveled by the cam roll 16 in the path 11 along the ordinal lines in moving to and from the center of the cam in retarding and accelerating the movement of the bed.

. It is one .of' the objects of this invention that the transfer of the control of the movement of the bed, from the rack 3 to the reversing cam 11, and vice versa, shall take place quietly and without a jerk, therefore m constructing such a cam for practical service, the platting of the path 11? must be such that the roll will be driven along the longitudinal .line y--y toward the center the distance between the vertical lines 2 from 0 to 159, while the cam is being rotated 15, or through the space between the first and second ordinal lines,- or,- while the cam roll has moved from b to c, the cam has rotated'from d to I), both the cam and roll moving at the same rate of speed along the the cam 11, the necessity is therefore evident for the correspondence in their rate of motion; when the cam 11 has rotated 15 *after the cam roll 16% has entered the cam path 11 the rack 3 has moved out of engagement with. the return stroke gear 1 0, which is then moved to its lower position,

. and the printing stroke gear 8 is simultaneously raised to its highest position, during "which time the cam roll 16 has continued its movement along the ordinal lines to the center, the related parts then corresponding in position to Fig; 17, when the direction of its motion is-reversed, moving along the ordinal lines from the center to 165 from its entering point, the rack 3 then starting on the rinting stroke engages with the printing "stro e gear 8, therack 3 being under the a control of the latter and the reversing cam 1 1 during its remaining 15 of rotation.

The cam development is alike on its en- 'tering and discharging sides and the cam roll. 16 consequently moves in the path 11 along the curve 9 at the same rate of speed as on the entering side, and thus the transfer -or change of control of the rack 3 from the reversing cam 11 is effected gears 8 and 10 alternately to and from the smoothly and without a jarring motion.

A gear wheel 18 having cut in its periphery teeth fof a desired pitch, is provided with a flange 18 projecting from one of its sides also permit the two series of teeth to be adjusted relatively to each other along their pitch lines, thereby compensatin for wear or lost motion between the teeth en a ed. IV ile I have illustrated and described my invention in a preferred form of construction I do not desire to be understood as limiting myself thereto, as it is evident that many changes and modifications may be made within the scope and without departing from the spirit of the invention. The gist of my invention lies therefore, not only in the novel construction, combination and arrangement of parts shown and described, and their equivalents, but broadl and more particularly in driving the be of a rinting press to and fro by two separate and of mechanisms, and reversing its direction of motion by a third set separate and distinct from those for driving it to and fro;

in supporting the rotative parts of the said three mechanisms around and upon one shaft between two bearings; in means for moving the bed driving gear wheels in and out of the path of the bed rack; in means for oiling the arts located upon said shaft between the earings thereof, and means for taking up wear or lost motion in the gearing between the cylinder and bed of a printing ress. I

What claim as new, and for which I desire to secure Letters Patent, is:

1. In a printing' press comprising among its elements a bed and rack; a rotating shaft, means for movin the bed in one direction, a second means for moving the bed in the opposite direction, abody rigidly secured to said shaft and confined to movement in a single plane, and an operative connection between said body and second means.

2. In a printing press comprising among its elements a bed and rack; a rotating shaft, two gear wheels supported around said shaft, means for rotating one of them in a direction opposite to that of said shaft, a body rigidly secured upon said shaft, and an o erative connection between said body and the other of said gear wheels.

3. In a printing press comprising among its elements a bed and rack; a rotating shaft supported in two bearings,-two gear wheels of any third series of l1ke pitch with which they may be;

distinct sets surrounding said shaft, means forrotating one of them inan opposite direction to that to communicate-motion from the former to the latter, s'aid body and gear wheels being supported upon and around said shaft be"'' tween the two bearings thereof. I

4. In a printing press comprising among its elements ,a bed and rack; a shaft supported in two bearings, two gear wheels surrounding said shaft-between the bearings, means for rotating one of them in one direction, means for giving said gear wheels vertical reciprocations, a rotating body,- and an operative connection between said body and the other of said gear wheels; to communicate motion from the former to the latter.

5. Ina printing press comprising among its elements a bed and rack; a rotating shaft, two gear wheels surrounding said shaft, means for rotating one of them in a direction opposite to that of said shaft, means. for giving said gear wheels vertical .reciprocations, a bodyrigidlysecured to said shaft, and an operative connection between said body and the other. of said gear'wheels; to communicate motion from the former to the latter.

6. In a printing press comprising among its elements abed and rack; a sleeve, a shaft, means for rotating it, the shaft being eX- tendedthrough the sleeve eccentrically there to, one or more eccentrics supported on the sleeve, and one or more gear wheels supported on'said oneormore eccentrics. I 7

7. In a printing press com rising among its elements a ,bed and rackwit downwardly projecting teeth; a shaft supported in two bearings, two gear wheels supported around said shaft between the bearings, means for rotating one of them in one direction, .a body supported upon said shaft, an operative connection between said body and the other of said gear wheels, and means for alternately movingeach of said gear wheels in and on of the path of said rack. I I

8. In a printing press comprising amongv its elements a bed and rack a shaft, two gear wheels surrounding said shaft, means for rotating them in opposite directions, a sleeve laced eccentrica y around said 'shaft and held in a fixed position by an attachment to the frame, two eccentrics supported upon said sleeve and supporting said gear wheels, and means for'alter nately reversing the position of said eccentrics andgear wheels. I

9. In a printing-press comprising among its elements a bed and rack; a shaft, two gear wheels surrounding said shaft, means for rotatmg one of them in one direction, a body supported upon said shaft, means for rotating said body in an o posite direction to the 7 last named gear whee anoperative connection between said body and the other of said gear wheels, to communicate the motion of the former to the latter, a sleeve placed e0 centrically around said shaft. and held in a fixed position by an attachment to the frame,

two feccentrics supported upon said sleeve {I I and supporting said gear wheels, and means. for alternately reversing the position ofsaid I eccentrics and gear wheels. I I

'10. In a printing press-comprising among its elements a bed and rack; a rotating shaft,

two gear wheels surrounding said shaft,.

means for rotating one of them in a-direc-tion opposite to that of said shaft, a body rigidly.

secured to the rotating shaft, ano erative v connection between said body and t is other of said gear wheels, to communicatethe motion of the former to the latter, ,a sleeve placed eccentrically around said shaft and held in afiXed position by an attachment to the frame, two eccentrics supported upon said sleeve and supporting said gear wheels, and means for alternately reversing the position of said cecen't-rlcs and gear wheels. I

11. In'a printing presscomprising among,

its elements a bed and rack; means for mov-f including two hangers rigidly attached to the" bed and bearing each a stud and roller, to,

alternately engage with and disengage from the rotating element of said third means, i

each of said means being confined to; movef, U

12. In a prlnting press comprising among its elements a bed and rack; means for mov ment in a single plane.

ing the bed-in one direction, a' second means for moving the bed in the opposite direction, a shaft supported in two bearings, two hang;

we ers suitably attached to the bed and bearing each a stud and roller, a cam supported upon said shaft between the two bearings, and

means for rotating said cam to alternately,

engage with and disengage from said studs and rollers, to reverse the ,direc tionof'the' movement of the bed, eachof said ineans be ing confined to movment in a single plane.

13. In a printing press comprising among its elements a bed and rack; a shaft supported in two'bearings', two gear wheels surrounding said, shaft bet'ween the bearings,

nieans for rotating one of them in one'direo tion, two hangers suitably"attachedto the," bed andb'earing each a stud and rol1'er, 'acan 1 supported u on saidshaft between the bearings, means or rotating said cam in an oppoa f site direction to that of thegear wheel last named, to alternately engage with and disengage from the said studs and rollers, to reverse the direction of the movement of-the -rzo bed, andvan operative connection'between said cam and the other of said gear wheels,

I 14. In a printing pressfcomprising'among its elements a bed and rack; a rotatingshaft' supported in two bearings, two gear wheels surrounding said shaft, means for rotating one of them in a direction opposite to that of I said shaft, two hangers suitably. attached to the bed and bearing each a stud and roller, a

r io I its elements a bed and rack a rotating shaft,

a gear wheel supported around said shaft, means for moving said gear wheel in and out of the path of said rack, a body rigidly fixed u )on said shaft, a stud secured to said gear w 1eel provided with a block, and a slot formed in said body with which said stud and block engages; whereby the motion of said shaft, and an ope tween said cam and gear'wheel'.

the body is communicated to the gear wheel. 16. In a printing press, comprising among its elements a bed and rack; a rotating body, a gear wheel, an operative connection tween the former and the latter, and means for changing the position of the center of the gear wheel relatively to that of the rotating body, to move the gear wheel in and out of the path of the rack; whereby the gear wheel when in a position in whi h its center coincides with the center of the rotating body is driven with an isochronous movement and when in other positions with a variable movement.

17. In a printing press comprising among its elements a bed and rack; a rotating shaft, a gear wheel supported around said shaft, a body rigidly secured'upon said shaft, an operative connection between said gear wheel and body, andmeans for givingvertical re- .ciprocatlons to said gear wheel.

18. In a printing press comprising among its elements a bed and rack; a rotating shaft, a gear. wheel surrounding said shaft, means for moving said ear wheel in and out of the ath of said rac ,a cam rigidly secured to rative connection be- 19. In a printing press comprising among its elements a bed and a single rack; a rotating shaft, a gear wheel surrounding said shaft, an operative connection between said shaft and gear wheel, and means for giving vertical reciprocations to said gear wheel.

20. In a printing press com its elements a bed and rack; a s raft, two gear wheels surrounding said shaft, means for giving alternate reciprocations to each of said gear wheels, comprising a sleeve placed eccentrio ally around said sh ft and held in a fixed position by an attachment to the frame, two eccentrics sup orted upon said sleeve and supporting saic gear wheels, and mechanism for alternately reversing the position of said eccentrics and gear wheels; to move the latter in and out of the path of the rack.

rising among 21. In a printing press comprising among its elements a bed and rack; a shaft,two gear wheels surrounding said shaft, and meansfor giving'alteruate reciprocations to each of said gear wheels, comprising a s eeve placed eccentrically around said shaft and held in a fixed position by an attachment to the frame, two eccentrics supported upon said sleeve and supporting sau gear wheels, agear 14 secured to a collar extended from one of the eccentrics, and a geared sector engaging with the gear 1 k fined upon a shaft having a bearing in the frame, said shafthaving secured to its opposite. end an arm provided with a stud and roller engaging with a rotating cam.

22. Ina printing press'comprising among its elements a bed and rack; a shaft, a sleeve laced eccentrically around said shaft and eld in a fixed position by an attachment to the frame, and provided with a longitudinal oil chamber open at the end by which said sleeve is held in a fixed position and communicating with an or more holes extending downwardly from I the inside to the outside of the sleeve and in:

tersecting the oil chamber, one or more eccentrrcs supported upon said sleeve and provided with one or more holes extendlng from the inside to the outside thereof, and means for bringing the holes 111' said eccentrics and sleeve into relative positions, whereby oil may flow into them from the oil chamber and connected oil supply.

'23. In a printing press comprising among its elements a bed and rack; a rotating shaft, two gear wheels surrounding said shaft,

means for driving them in opposite directions,

and further means for alternately and vertically moving each of said gear wheels in and out of the path of said rack.

'24. In a printing press comprising among its elements a bed and rack; a shaft, two gear wheels surrounding said shaft,-means for rotating them in opposite directions, two eccentrics surrounding said shaft and supporting said gear wheels, and'means, competent to move said eccentrics through an arc of hundred and eightv degrees, for alternately moving each ofsaid gear wheels in and out of g the path of said rack.

oil supply and also with one one 25. In a printing press comprising among its elements a bed and a single rack; means for moving thebed to and fro including a shaft supported in two hearings, a cam su ported upon said shaft, two hangers suitab y secured to the bed and having each a stud and roller, and means for rotating said cam toalternately engage with and disengage from said studs and rollers, to reverse the direction of the movement of the bed.

26. In a printing press comprising among its elements a bed and rack; a rotating shaft, two gear wheels surrounding said shaft, a sleeve supported eccentric-ally relatively to said shaft and held in a fixed position by suitv the concentric sitedirections ,means for alternately and vertica'll meansfor driving said gear wheels in oppoy moving each of said gear wheels in and i out f the' path" of said rack, and further means., including fa body rigidly. secured to said shaft, forreversing the direction of the movementof thebe '28.'.In' a printing'press comprising among lts elements a bed and rack; a rotating shaft,

"two gear wheels surrounding said shaft,- means for'driving said gear wheels in opposite directions,means for alternately moving each of said gear wheels in and out of the path of said rack, -a camrigidly secured upon jsaidshaft, and-two hangers, each provided the latter;

with a stud and roller, secured to the bed, for

of-themovement of p eversing the direction 29;. Ina printin ltS cements a be and rack; gear wheel attached thereto, a rotating shaft,

a gear wheel rigidly fixed thereon-en agingattachedto the cy 1nder,f means, including a second ear wheel supported around saidd'otating s aft, for moving the bed in one direction, a second means for withthe gear wheel moving the bedin the opposite direction, and

a third means, including a body rigidly fixed upon said rotating shaft and operatively 0011- nected to said second gear wheel, for reversing the direction of the movement of ,the bed; 30. In aprlnting press, comprising among its elements a bed and rack; a cylinder, a

other alo from said shaft,-formoving-the bed'in one digear wheel attached thereto, a rotatingshaft, a gear wheel provided with two series of teeth of- -the same diameter and pitch securedtov each other and adjustable relatively to each their pitch lines, said gear wheel being rigid y secured upon the rotating shaft and directly connected to the gear wheel at; I

tively with the drivintached to the cylinder, and means'actuated rection. 31.'. In a'printin press comprising among its elements abe ,andra'ck; a cylinder, a gear wheel attached thereto provided with two-series of teeth of'the same diameter and. pitch secured to each other, means for adjusting them relatively to each other along" their pitch lines, .ajrotating shaft, a-gear wheel rigidly secured thereon engaging withthe gear wheel attached to the cylinder, a-

second gear wheel supported around said shaft, a body firmly securedupon said shaft,

v and sup orting sa d gear whee s, a gear wheel secure I said second of said rack. I

printing press comprising among press comprising among a' cylinder, a.

an operative connection between said body and second gear wheel, to communicate motion from the former to the latter, and means for moving said second of the path of said' rack. i I v 32., In a printin press comprising among its elements a be and rack; a cylinder, a gear wheel attached a gear wheel rigidly secured thereto engaging with the gear wheel attached to the cylinder, a second ge ar wheel independentlyv supported around said shaft, a body firmly secured upon said shaft, an operative connection between said second gear wheel and body, whereby the motion ofthe latter is communicated to the'forme'r, and means for vertically moving gear wheel-in and out of the path 33.- In a its elements abed and rack; a rotating shaft,

gear wheel in and-out 7 thereto, a rotating shaft,

twoeccentrics surrounding said shaft, two M gears mounted on the eccentrics, one of them being driven from the rotating shaft, andmeans for alternatelyreversingthe position of said eccentrics.

. 34. Ina printing press comprising among a cylinder, a gear wheel attached thereto, a

rotating shaft, a ear wheel rigidly secured thereonengaging; irectly with the gear wheel attached to the cylinder and with the driving .its elements a bed andra-ck; a driving pinion,

pinion,;means including said rotating shaft and gear wheel rigidly secured thereon, 'connectedfpositively with the pinion, for moving ,the bed in one direction, a second means, connected positively withthe driving pinionfand independently of the first means,

for moving the bed in the opposite direction,

and ld meansforreversing its direction I of movement. 1 v

35. In a, printing press comprising among J its elements a bed. and rack; a driving pinion, a cylinder, a 7 gear wheel attached the'reto, a rot'ating shaft, a' gear wheel rigidly secured thereon engag ng directly with the gear'f wheel attached tothe "cylinder and with the driving pinion, means including driving pinion, for moving the; bed, in one 'said'rotating, shaft and gear wheel rigidly se,. cured,thereony connected positively with the pendently of the first I cans, for moving the t ed inlthe oppositedirectiom athirdmeans for reversing. its'fdirection of movement, and an operatl I ire connection between saidsecond and third'means.

l' 36;" In a printing press comprisingamong I its 'elements a bed and rack; a cylinder, a

gear wheel attached thereto, a rotating shaft su ported in two bearings, a gear wheel rigidl y secured thereon engaging-with the gear wheel attached-to the cylinder, two. :gear wheels su vportedaround said. shaft-between the two, hearings,

in and out of the pathof said rack, ther means for reversing the direction of the gear wheels in opposite in opposite shaft between the two said studs and rollers,

y directions, means for alternately moving each of said gear wheels and furmovement of the bed.

37. In a printing press comprising among its elements a bed and rack; a cylinder, a gear wheel securedthereto, a rotating shaft, a gear wheel securedthereon enga ing directly with the gear wheel attached to the cylinder, a second gear wheel independently sup orted around said shaft, and meansiiiclu ing a movable element for communicating the motion of said-shaft to said second gear wheel. I

38. -In a printing press mprising among 0 its elements a bed and min; a cylinder, a-

a rotating shaft gear wheel attached thereto,

' gear wheel rigs ported in two bearings, a id y secured thereon engaging with the ear wheel attached to the cylinder, two gear w heel supported around said shaft between thebearings, means for rotating said gear wheels directions, means for alternately moving each of said ear wheels in and out of the path of said rac 1, two hangers suitably attached to the bed andbearing each a stud and roller, and a camrigidly seemed to said bearings, to alternately engage with and disengage from the to reverse the direction of the movement of the bed.

39. In a printing press comprising among its elements a bed and rack with downwardly projecting teeth; a rotating shaft supported in two bearings, a sleeve placed eccentrically relatively to said shaft and held in a fixed position by an attachment to the frame, twoeccentrics supported upon said. sleeve, two gear wheels supported upon said eccentrics,- a gear wheel 14' secured to a collar extended from one of the eccentrics, a geared sector engaging with thegear wheel 14 and secured to'one end of a shaft having a bearing in the frame,

an arm' secured upon said shaft at its other end bearing a stud and roller extending into the path of a rotating cam, means for imparting a rotating motion tonne of said gear wheels in a direction opositeto that of said shaft, a cam 'ri 'id y ed' upon said shaft, a stud and bloc secured to the other of said gear wheels engaging with a slot formed in the body of said cam, and "two hangers suitably attached to the bed and bearing each a stud and roller, whereby the bed and rack are driven to and fro'and reversed ateach end of the to and fro movement.

40. In a printing press comprising among its elements a bed and rack, a cylinder, a gear wheel attached thereto, a main gear wheelengaged with the latter, a driving pmion' engaging directly with the main gear for moving the bed one ingpmion, for moving the bed in the op'po-, direction, and a third means for reversing site the direction of the movementofthe bed. a

4 1. In a printing press comprisingamong its elements a bed and rack; a driving pinion, means, moving the means for mo ing the bed in the opposite direction including among its members. a rotat ing shaft having rigidly secured thereon a gear wheel engaging directly with the driving pinion, a thi d means for reversing the direction of the movement of the bed, and an o erative connection between the second and t ird means.

42. In a printing press com rising among its elements a bed and rack wit 1 pro'ecting teeth; a cylinder, a gear wheel attac ed thereto, a main gear wheel engaged with the latter, a driving pinion engaging directly with the main gear wheel, means, in

. cluding the main gear wheel and driving pinion,'for moving the bed in one direction, a second means, including a rotating shaft having rigidly secured thereon a gear wheel engaging directly with the driving pinion, for movin the bed in the opposite direction, and

a thir meansfor reversing the direction of rising among reversing the direction of the movement of the bed, and an operative connection be tween the second and third means.

44. In a printing press com rising among its elements a bed and rack; a s liaft, two gear wheels supported around the shaft independently thereof, means for rotating the-gear wheels in opposite directions, and means for alternately and vertically moving each of the gear wheels in and out of the path of the rack.

45. In a printin press comprising among its elements a be and rack; a shaft, two gear wheels supported around the shaft independently thereof, means for rotating the gear wheels, in opposite directions, means for alternately and vertically moving each o the gear wheels in and out of the path of the rack, and further means for reversing the direction of the movement of the bed.

46. In a printiag press comprising among its elements a bed and rack; a shat", two gear wheels supported around the shaft independently thereof, .means downwardly downwardly a second means, in-

for rotating the too gear wheels in opposite directions including l a rotating shaft having a gear wheel rigidly secured thereon engaging with one of said gear wheels, and means for alternately movmg each of said gear wheels 1n and out of the path of the rack.

47. In a printing press comprising among its elements a bed and rack; two gear wheels supported around the shaft independently 10 thereof, means for rotating the gear wheels in opposite directions, two eccentrics supported around the shaft independentl thereof and supporting the gear wheels, and means for alternately reversing the positions of the ec- 'EDW. A. SOHMITT, L. S. Sonmrr.

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