US726572A - Holding and registering hook for color-plates, & c. - Google Patents

Description

PA/TENTED APR. 28 0. H. QUETSGH.

APPLICATION FILED JULY 21, 1902.

HOLDING AND REGISTERING HOOK FOR COLOR PLATES, &0.

N0 MODEL.

orqleggL inn TATFS nrnnir OTTO H. QUETSCH, OF CHICAGO, ILLINOIS.

SPECIFICATION forming part of Letters Patent No. 726,572, dated April 28, 1903.

Application filed July 21,19Q2.

To aZZ whom it may concern:

Be it known that I, O'rro I-I. QUnTsoH, of Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Holding and Registering Hooks for Oolor-Plates and the Like; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form a part of this specification.

This invention relates to improvements in holding and registering hooks for color or other plates from which impressions are made or printed, and the invention is herein shown as adapted to secure and register on sectional printing-basescolor-plates used in multicolor processprinting for making colored pictures. 7

The invention consists in the matters hereinafter set forth, and more particularly pointed out in the appended claims.

The invention is herein shown as connected with and is adapted for use on sectional bases which are secured flat on horizontal bedpresses, and the holding and registering hooks are embodied in blocks or casings which are of the same general shape and size as the rectangular block of which the base is made.

In the drawings, Figure 1 is a plan view of a sectional base provided with my improved holding and registering hook, showing color-plates'thereon and the manner of securing the plates to the base by means of said hooks. Fig. 2 is a central longitudinal section of one of the registering-hooks and the mechanism for actuating the same. Fig.

3 is a longitudinal section thereof, taken in a plane at one side of the view shown in Fig.

2. Fig. 4 is a transverse section of said parts,

taken on line 4.4 of Fig." 3. Fig. 5 is a transverse section thereof taken on line 5 5 of Fig. 3. Fig. 6is a side View of the device; Fig.

7 is a longitudinal section of a modified form. of the device. Fig. 8 is-a transverse-section. thereof taken on line 8 8 of Fig. 7. Fig. 9 is,

a side elevation of the actuating-gear for the hook-slide shown in Figs. 7 and 8 removed from its casing or block.

As shown in the drawings, A designates a sectional base consisting of a plurality of Serial No. 116,317. (No model.)

metal blocks which are surrounded and held together by furniture-strips B, the whole being contained within a chase O and locked therein by means of quoius D in a manner familiar with those acquainted with the printing art.

E Edesignate color-plates which are locked on the base by means of holding and registering hook devices made in accordance with my invention.

The device herein shown is adapted more especially for locking upon the base and registering thereon color-plates which are used in multicolor-work. In this process of producing colored pictures it is usual to employ in proper successive order three or more different plates for each picture, each plate printing a distinct color, and in the printing process a plate containing one of the colors is locked to the base and an impression taken therefrom, after which said plate is removed and a second plate looked to the base and an impression taken from said second plate, and so on until all of the colors are printed. It is necessary in order to produce acceptable work that the plates beariugthe several colors after the first plate shall be made to accurately register with the outlines on the sheet of paper receiving the impression from the first plate, and it is therefore necessary that means be provided not only for looking the color-plates on the base, but also for shifting the plates on the base in order to properly register each succeeding plate with the outlines of the picture produced by the impression of the first plate. The devices for soholding and registering the plates on the base are designated generally by the letter F and are knownin the art as registering-hooks. Said devicesconsist each of a hollow block or casing F, one type of which is shown in Figs. 2 to 6, inclusive. The blocks or casings are made of such exterior form as to permit the same tobelocked in said base between the several blocks thereofand flush therewith in position to properly grasp the color plate or plates. The advantage of makingthe casings or blocks of said registeringhooks of the shape shown lies in the fact that the same may be located at any suitable place in the base and held securely therein by the clamping devices before referred to, said blocks constituting sections of the base.

The registering-hooks shown in Figs. 2 to 6 are made as follows: F designates a longitudinally-movable slide, which is movable in ways or guides in the upper face of the block or casing F and is flush at its upper surface with the upper surface of the block or casing F. The connection of the slide with the block is herein shown and is preferably made dovetail in cross-section. The guide or way of the block or casing extends to the end of the block to permit the slide to be inserted into the guide or way from the outer end of the block. Said slide is provided on its upper face, at the outer end thereof, with a raised inwardly-facing hook F which is designed to grip the margin of a plate E in the manner shown in Fig. 1. Said hook-plate is actuated to move the same inwardly and outwardly in the block or casing by means of a gear-wheel G, which is located in an opening extending transversely across the block and is provided with trunnions 9, one of which has bearing in the side Wall of the block and the other of which has bearing in a removable circular bearing-plate F which is removably seated in one end of said opening in the manner clearly shown in Fig. 5. The removal of said plate permits the insertion of said gear-wheel G into and its removal from the block. Said gear-wheel G meshes with rack-teethf', formed on the lower face of the slide F The gear-wheel is rotated to move the hook-slide F inwardly and outwardly by the following mechanism.

I-I designates a vertical screw-threaded shaft having at its lower end a reduced portion h, which has bearing in an aperture in the lower wall of the block F, as shown in Figs. 3 and 4t, and is provided at its upper endwith a similar reduced portion h, which extends through and has bearing in the removable plate f of the block. Said shaft is inserted into place or removed therefrom upon removal of the platef. The shaft H is screw-threaded with and carries an internally-screw-threaded nut H", which is provided on its side adjacent to the gear-wheel G with teeth 7L2, constituting a rack. The outer end of the block is provided with an inwardly-extending recess made of sufficient width to receive the nut H, and said recess intersects the opening which is occupied by the gear-wheel G, whereby the rack on the nut may mesh with the teeth or cogs of the gear-wheel. Upon rotation of the said shaft the nut H by reason of the endwise immovability of the shaft is moved upwardly and downwardly on the shaft and by by reason of its engagement with the gearwheel G causes said wheel to rotate, the direction of rotation depending upon the direction of movement of said nut. The reduced upper end h of said shaft is provided with a slot, as shown in Fig. 1, by which said shaft may be engaged by any suitable instrument, such as a screw-driver, to rotate the same.

It will be noted that the actuating-shaft H is located at one side of the path of the hookslide F so that the hook may be moved outwardly entirely to the outer end of the block F or into contact with the surrounding furniture-strip, whereby the plates held and registered by said registering-hooks may extend outwardly into contact with the upper reduced end of the actuating-shaft H. Moreover, said actuating-shaft need not extend above the plate f, in which it has bearing, so that the color-plate may extend outwardly oversaid shaft. The construction whereby the actuating-shaft H is located out of line or at one side of the path for the registeringhook slide is of considerable importance when employing the same in connection with a base adapted to accommodate a plurality of plates thereon, as shown in Fig. 1. When this practice is followed, it is desirable from an economic standpoint that the plates be located as close together at their margins as practicable, for the reason that the margins on the printed sheet between said plates are lost when the pictures are finished and trimmed.

VVith the construction just described, wherein the hooks are made narrow and may be moved outwardly to the outer end of the blocks or casings F, I am enabled to produce a very narrow margin on the sheet between the impressions, so that the wastage of paper at the margins when the pictures are trimmed is materially reduced as compared with prior forms of holding and registering hooks. It will be understood that in a large press a number of plates may be placed on one sectional base side to side and end to end and a large number of impressions made at one time on a single sheet, from which the completed pictures are afterward cut. The saving of the paper at the margins of the pictures therefore becomes a matter of considerable economical importance. Moreover, it often occurs that a given number of pictures may be made on a stock-sheet of paper if the margins between the pictures be narrow, whereas a slight widening of the margin would necessitate the use of a special-size sheet at an increased expense.

In Figs. 7, 8, and 9 are shown a modification of the holding and registering hook, wherein the gear-wheel I, corresponding .to the gear-wheel G of the previously-described construction, is provided with a worm-wheel I, which is adapted to mesh with a vertical worm-shaft J, located vertically in the casing or block F at one side of the path of the hookslide and having bearing therein in the manner shown in Figs. 7 and 8. The slide and hook F F respectively, are made the same as shown in the previously-described figures, and the slide is provided on its lower surface with rack-teeth f, which engage the teeth of the gear-wheel I in the manner hereinbefore described.

An important advantage of both of the constructions described is the facility with which the hook-slides may be moved inwardly and outwardly and the rapidity with which said books may be engaged with the plates and shifted with respect thereto to properly register the plates. This is due to the fact that the actuating screw-shafts are free to be engaged with a screw-driver or like implement, whereby the same may be turned continuously. Moreover, the mechanism is such that the hooks are susceptible to fine adjustment, so that the adjustment of the hooks may be readily effected whether it be great orsmall.

It is obvious that changes may be made in the structural details shown without departing from the spirit of the invention, and I do not wish to be limited to such details except ing as hereinafter made the subject of specific claims.

I claim as my invention- 1. A holding and registering hook for color plates and the like comprising, in combination with a casing, a horizontal slide movable therein and provided on its upper surface with a hook adapted to engage the margin of a plate or the like and on its lower face with a plurality of teeth forming a rack, a horizontal gear-wheel having'bearing in said casing and meshing with said rack, and means located at one side of the path of said slide for rotating said gear-wheel, whereby said hook may be moved outwardly at one side of the manually-operable part which gives motion to the hook.

2. A holding and registering hook for colorplates and the like comprising, in combination with a casing, a horizontal slide movable therein and provided on its upper face with a hook adapted to engage the margin of a plate or the like and on its lower face with a plurality of teeth forming a rack, a horizontal gear-wheel meshing with said rack and a vertical actuating-shaft operatively connected with said gear-wheel and located at one side of the path of said slide, whereby said hook may be moved outwardly at one side of said actuating-shaft.

3. A holding and registering hook for colorplates and the like comprising, in combination with a casing, a horizontal slide movable therein and provided on its upper face with a hook adapted to engage the margin of a plate or the like and on its lower face with a plurality of teeth forming a rack, a horizontal gear-wheel meshing with said rack and a vertical actuating-shaft operatively connected with said gear-wheel and located at one side of the path of said slide, said shaft extending upwardly through the casing and being formed at its upper end for engagement with a suitable actuating implement.

4. A holding and registering hook for colorplates and the like comprising, in combination with a casing, a horizontal slide movable therein and provided on its upper face with a hook adapted to engage the margin of a plate and on its lower face with a plurality of teeth forming a rack, a horizontal gear which meshes with said rack, a vertical screwthreaded actuating-shaft which has bearing in said casing, a nut which has screw-threaded engagement with said shaft and is raised and lowered as the shaft is rotated, and a rack on said nut adapted for engagement with said gear-wheel.

5. A holding and registering hook for colorplates and the like comprising, in combination with a casing, a horizontal slide movable in a way therein and provided on its upper face with a hook and on its lower face with teeth forming a rack, a horizontal gear-wheel occupying a transverse opening in said casing and provided with trunnions one of which has bearing with a plate removably fitted in said transverse opening, said gear wheel meshing with said rack and means located at one side of the path of said slide for rotating said gear-wheel.

6. A holding and registering hook forcolorplates comprising, in combination with a casing, a horizontal slide movable in a way in the upper side of said casing, a horizontal gear-wheel which has bearing in said casing, a hook on the upper face of said slide, rackteeth on the lower face of the slide which mesh with said gear-wheel, a Vertical actuating shaft operatively connected with said gear-wheel and having bearing at its lower end in the casing or block and a removable plate attached to the upper side of the block in which the reduced upper end of the shaft has hearing.

In testimony that I claim the foregoing as my invention I affix my signature, in presence of two witnesses, this 16th day of July, A. D. 1902.

OTTO H. QUE'ISOH.

Witnesses:

WILLIAM L. HALL, GERTRUDE BRYCE.

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