US598307A - leffleb - Google Patents

Description

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(No Model.)

C. LEPPLER. B0X BINDING MACHINE.

Patented' Feb. 1,1898. F91,

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(No Model.) 3 Sheets- Sheet 2.

C. LEl-TLER.

B0X BINDING MACHINE.

No. 598,307. Patentqd Feb. 1,1898.

W TNESSES! (No Model.) v 3 Sheets--Sheet 8.

C. LEFPLER.

BOX BINDING MACHINE.

No. 598,307. A Patented Feb. 1,1898.

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E TATES CHARLES LEFFLER, OF BROOKLYN, NEW YORK.

Box-munitie MACHINE.

. SPECIFICATION forming part of Letters Patent No. 598,307, dated February 1, 1898.

Application filed January 23,1897. Serial No. 620,336. (No model.)

To a/ZZ whom, t may concern:

Be it known that I, CHARLES LEFFLER, a citizen of the United States, residing at Brooklyn, in the county of Kings and State of New York, have invented certain new and useful Improvements in Box-Binding Machines, of

which the following is a full, clear, and exact description. I

This invention relates to machines for bind ing or reinforcing the corners of boxes with metal strips; and in general it consists of an improvement upon a machine described in another application filed by me April 2, 1896, Serial No. 585,867.

The improvements herein relate particularly to the devices for` feeding the metallic binding-strip to the dies whichapply it to the Vbox and for regulating the feed thereof, to

the devices for severing the strip, and to certain details of construction which render the operation of the machine exact and positive.

The accompanying drawings illustrate the invention, in which* Figure 1 is a side elevation of the machine. Fig. 2 is a front elevation thereof, portions being in section along the line .fr of Fig. 1. Figs. 3 and 4. are side views of the feeding devices, portions being in section` to show the i devices for cutting of the strip. Fig. 5 is a view of the upper die.

section on line y y of Fig. l. Fig. 6 is a plan of the means for supporting the feeding de* vice upon` the die-head. Fig. 7 is an elevation of the oscillating knife. Fig. Sis an end Figs. 9, 10, 11, and 12 are details of a clutch for stopping and starting the machine. Fig. 13 is a sectional View of a peculiar form of turnbuckle for adjusting the connection between the main crank of the machine and the head of the reciprocating die. Fig. 14 is a face view of the metallic strip, and Fig. 15 is a view of the box with the strip applied to its corners.

The machine is mounted upon a pedestal A and a main frame A', attached to the upper end thereof. The frame Al supports a main shaft a, upon which is a driving-pulley a3. Upon the shaft, between the pulley and the bearing in the frame, is a peculiar form of clutch forming one of the features of my invention. This consists of a collar b,havin g an annular groove b', formedby two end flanges. These flanges are cut away at opposite places,

and a longitudinal groove h2 is formed in the collar to receive a bolt b3. When this bolt has been inserted inthe collar, the removed `portions of the two flanges are filled in by caps b4. One of these caps has a hole b5 in it which receives a pin o6, carried bya lug 227, attached to the bolt. Between the lug and the cap a spring is placed, surrounding the pin, which has a tendency to force the bolt toward the pulley. The lug l)7 has an inclined face, as shown in Fig. 10, facing up the side of the flange nearest the pulley. The hub of the pulley has three notches hs, adapted to receive the end of the bolt h3 for the purpose of locking the collar and the pulley together. Inclined surfaces o9 are formed on the hub to direct the end of the bolt into the notches. The collar is tight on the shaft, whereas the pulley is loose thereon, so that when the two devices are locked together the shaft will be rotated. Below the collar a bracket cis fixed to the main frame. In this bracket a thrustrod c (shown in Fig. 12) has its bearing. The lower end of this rod is connected with a treadle c2, and a spring c3 acts upon the rod in opposition to the treadle. The upper end of the rod is provided with an L-shaped dog c4. One arm of this dog is wedge-shaped. While the machine is in operation, the foot of the operator is pressing down upon the treadle to hold the dog c* out of the groove b' in the collar; but when the machine is to be stopped the foot is lifted from the treadle, allowing the dog to :rise into the groove of the collar, where its wedge-shaped arm passes between the lug o7 on the bolt and the'face of the flange on the collar. This forces the bolt out of the notch in the pulley, thus disconnecting the shaft from the pulley, and immediately thereafter the lug b' strikes the other arm of the dog and brings the shaft to a stop. Thus it is possible to stop the shaft very7 quickly and positively.

The bearing for the shaft has formed upon it a guide CZ for a reciprocating die-head e. This guide has a circular recess in its face, in which a crank-disk c', carried `by thevmain shaft, is located. The die-head c has a large opening e', in which the crank-pin a2 revolves. The crank-pin is, connected with the die-head by means of a turnbuckle, the connection between the turnbuckle and the Clie-head being l by means of a pin e3, set in a cap e4, bolted to the die-head. The turnbuckle is for the purpose of taking up any slack due to wear of the parts to which it is connected, so as to insure a solid stroke of the die. The interiorly-threaded ends of the turnbuckle are split at several points, as shown at e5, Fig. 13, to form spring-fingers, which may be clamped upon the thread on the end sections e by means of the cone-nuts e7. Having properly set the turnbuckle, the cone-nuts are then used to lock it. l

The die-head carries adiejhaving alongitudinal Vshaped grooveinit, the sides of which stand ninety degrees apart. Flanking the sides of this die are two lips f f. These are 'pivoted to the die-head atfzfz and swing under the edges of the die, so as to form a support for the edges of the metallic strip after it has been fed into the die. The lower die or anvil g has an annular ridge g', which the upper die accurately fits over. The box to the 'corners of whichv the metallic strip is to be s'ecured is placed upon this anvil like a saddle, and the upper die then coming down drives and fastens the strip onto the corner of the box. The lips f in descending strike the 'anvil and are separated to allow the strip to fall upon the corner of the box. They may also serve the additional purpose of preventing the fingers of the operator from being caught between the dies, as their lower edges inl swinging apart force away any obstruction that may be upon the anvil. The anvil is supported in a rectangular guide in the upper j end of the pedestal and is extensible to the full width of the upper die, so as to corre- 3 spond with the size of box operated upon, This movement of the anvil is accomplished by the wheel g2 and its shaft in the usual way.

l will now refer to the feedingl and feedregulating devices for the strip.

The strip (indicated by ZL) is Wound upon a reel Zt', suitably mounted at the rear of the machine.

From the reel the strip leads] through atension device t and thence along a groove j, formed in a movable plate j. strip is merely a ribbon of metal having a The row of holes punched along each edge, the i bur's formed by the punchings serving as a devices for the strip are mounted. This -support for a frame Z, in which the feeding frame embraces the T-shaped projection and is adapted to 'slide vertically thereon to a limited extent. Frame Z is provided with a lug Z, normally standing near the lower end of groove 7c'. It is also providedwith a lug Z2, which extends over the plate ZaB-and vcarries a set-screw, by which the vertical position of the frame Z upon the die-head may be adjusted.

The spring 7a2 rests upon the top of lug Z and against the plate k3. lts function is to force the frame Z downward to its normal position.

Thefeeding device consists of a disk m, having two rows of pins in its periphery, which are adapted to engage, respectively, with the two rows of holes in the strip. This disk stands immediately over the groove j,

Aand when it rotates it forces the strip along the groove and toward the die. To the disk is secured a ratchet-wheel m', and the two are mounted loosely upon a shaft m2. Keyed to this shaft is an arm o, carrying a pawl o', engaging with the teeth of the ratchet. Another pawl o2 engages with the pins on the disk to prevent a backward movement of the disk. On the shaft m2 is also a pinion p,

'which is engaged by a gear-segment p', having a roller p2 at` its opposite end and being pivoted between its extremities to a stud p3. This roller stands between two parallel iianges p4, which are attached to the face of the plate q. This plate is pivoted upon a stud q', (shown in dotted lines in Fig. 5,) so that the iianges p4 may be set at any inclination. The platehas a slot q2 concentric with its pivot and through which a tightening-bolt passes to secure the plate in any position desired. The plate also carries a pointer Q3, moving in front of a scale g4, by which the proper inclination of the anges may be determined. The object 'of these adjustable features is to be able to determine how much inclination to give to the iianges p4 to effect a certain length of feed of the strip. The way in which this is done will be described later on. Y

The frame Z is set so'as to bring the groove in plate j into line with the entrance r at the rear of the upper die. The extreme rear end of the upper dieis formed by a disk s, mounted to turn on a shaft s', set into the die, as shown in Fig. 1i.- This disk has a cutting edge at 's2 and aV-shaped notch s3, which corresponds with the shape of the die and at times forms a continuation thereof. The disk also carries a projecting stud s4, set eccentrically in its face. Immediately opposite this disk .in the face of the frame Z is fixed a 'plate Z. 'This plate is provided with a slot, one portion of which is vertical and another portion curved and at an angle. The head of the 'stud s4 stands in this groove. Beneath the rear end of the upper die and permallently `fixed to the main frame of the machine is a cutting-blade u, the edge 'of which is in the saine plane as the outer face of the disk s. This blade co'perates withthe 'edge of said disk tov sever the strip. Immediately back of this blade u the frame is dat and horizontal to form a table w, upon which the frame Z may rest when the upper ydie lowers.

The operation of the machine is as follows: We will assume that the strip??l has been fed into the lupper die to the position shown in dotted lines in Fig. l. The corner of the box being in position upon the lower anvil the IOO IIO

upper die moves downward until the plate j', carried bythe frame Z, strikes and rests upon the top of the table w. continues its downward movement, carrying the strip across the knife u, upon which it is sheared off by the edge of disk s. Said disk at the same time commences to rotate on its center by reason of the engagement between the stud s4 and groove t and the relative movement ofthe die and the frame Z. The disk rotates until the notch s3 is brought into line with the face of the die and at which instant the diestrikes'upon the corner of the box yand forces the burs in the strip through the material of the box and clenches them against the anvil. At the same time the shape of the die bends the strip longitudinally along its center to iit over the corner of the box. The notch in the cutting-disk being presented to the anvil at the end of the stroke of the upper die insures the fastening of the eXtreme end of the strip on the corner of the box. The frame Z in making this downward movement carries the roller p2 to the lower end of flanges p4, which movement swings the arm p and, acting through pinion p and arm o,causes pawl o' to slide backward freely over the ratchet m. Then the die rises, the upward movement of frame Z caused thereby carries roller p2 to the upper end of the flange p4 and throws the pawl o' in the opposite digle.

rection, thus causing the .feeding-disk m to rotate and feed strip 7i into the upper die, where it rests with its edges lupon the two lips f. In the upward movement of the die the frame Z and the feeding device which it carries remains stationary upon the table w until the entrance r to the dieis opposite the severed end of the strip in groove j. This is caused partially by the weight of the frame and partially by the spring 7a2.

To adjust the feed of the strip for different sizes of boxes, the angle of the flanges p4 is changed. The greater the angle from the vertical the greater will be the feed, the scale indicating the amount of feed at a given an- Likewise a scale is marked upon the ridge of theanvil g, so that it may be set to correspond. A small tension-roller@ is placed at the rear of the plate j to hold the strip in the groove j.

Having thus described my invention, I claiml. In a box-binding machine the combination of a reciprocating die having a passage The diehead then ried by said die, said piece having a cutting edge and a portion corresponding to the shape and forming an extension of the die, substantially as described.

2. In a boxbinding machine the combination of a reciprocating die having a passage for the binding-strip, a guide for the strip carried by the die and movable relatively thereto, a movable piece carried by the said die and having a cutting edge and a portion corresponding to the shape and forming an extension of the die, and means whereby the relative movement of the die and guide will cause first the cutting edge of said piece and then the extension of the die to be presented for operation.

3. In a box-binding machine the combination of a reciprocating die having a passage for the binding-strip, feeding devices for said strip moving with said die through a portion of its stroke, and means for detaining said devices through the remainder of the stroke, substantially as described.

4. In a box-binding machine `the combination of a reciprocating die having a passage for the binding-strip, feeding devices for said strip carried by the die and moving with it through aportion only of its stroke and means whereby said feeding devices are operated during backward or return movement of the die, substantially as described.

vfor the` binding-stri p and a movable piece car- 5. In a box-binding machine the combination of a reciprocating die having a passage for the bindingstrip, a feeding device for said strip carried by the die and consisting essentially of a feeding-disk, a pawl and ratchet to move the same, an oscillating lever and a pinion to move the pawl andA ratchet and an inclined guide in which one end of said lever moves whereby a bodily motion of the lever causes the same to vibrate, substantially as and for the purpose described.

6. In a box-binding machine, the combination of a reciprocating die having a passage therein for the bindingstrip, of two pivoted lips normally extending under the sides of the die and supporting the strip therein, substantially as described. t

In testimony whereof I subscribe my signature in presence of two witnesses.

. (3l-IAS. LEFFLER. lVitnesses:

FRANK S. OBER, HARRY BAILEY.

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