US662099A - Press for embossing, &c. - Google Patents

Description

No. 662,099. Patented Nov. 20, I900. C. SEYBOLD.

PRESS FDR EMBOSSING, 8L0.

(Application filed Jan. 23, 1900.\ 7 (No Model.) 3 Sheets-Sheet l.

Wif/ws S63 I7ZW6/WZ0i "f M M Jifamzey No. 662,099. Patented NOV. 20, I900. C. SEYBOLD.

PRESS FOR EMBOSSING, &c.

(Application filed Jan. 23, 1900.)

3 Sheets-Sheet 2.

(No Model.)

sk s s QQ 15 $0M No. 662,099. Patented NOV. 20, I900.

C SEYBULD PRESS FDR EMBUSSING, &C. (-Applicaion filed Jan. 23, 1900.

3 Sheet-Sheet 3.

(No ModaL) Egg.

Um warns CHARLES SEYBOLD, OF DAYTON, OHIO.

PRESS FOR EMBOSSI NG, 800.

SPECIFICATION formingpart of Letters Patent No. 662,099. dated November 20, 1900.

Application filed January 23, 1900. Serial No. 2&92. \No models I0 all whom, it may concern:

Be it known that I, CHARLES SEYBOLD, a citizen of the United States, residing at Dayton, in the county of Montgomery and State of Ohio, have invented certain new and useful Improvements in Presses for Embossing and the Like, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this specification.

My invention relates to that class of machines in which various shapes and forms are impressed or out upon paper blanks by means of molds or dies in which the paper-stock is placed between the forms and suitably embossed or cut by powerful pressure acting on the forms to bring them together, and my improvements are adapted especially to those forms of embossing and die presses in which a platen is caused to descend upon the bedplate of the machine,between which the forms and paper-stock are located,and the invention is particularly designed forembossing-presses in which it is very essential that the paperstock should be accurately fed to the forms and that the forms should be rigidly locked in exact position during the operation of the platen.

It has been frequently sought heretofore to arrange some sort of automatic feed by means of which each sheet of the paper-stock might be automatically selected and fed to the press; but it has been exceedingly difficult to design such automatic feeding devices owing to the difficulty of selecting one sheet at a time from a pile of sheets by mechanical means or to feed such sheet accurately to a gage when for any reason the sheets have become disarranged.

The usual method of feeding the press is therefore by operatives, who select the sheet by hand and place it to gage between the forms of the press. The sheet has to be placed upon the stationarybed-plate underthe platen in a narrow contracted space, rendering the operation both difiicult to accomplish and dangerous to the operative, and as each sheet has to be thus placed and removed for each operation the movements of the machine necessarily must be slow.

In printing-presses of the bed-and-platen type it has been customary to provide an automatic shifting-plate to be moved under and away from the platen during the operation. It is not essential in such machines, however, to rigidly lock the shifting-plate in position independent of the necessary lock obtained by the action of the shifting mechanism when at rest.

In my invention therefore I provide a movable platen for holding the forms which shall automatically, after each impression and while the platen is rising, slide the form from under the platen into a position readily accessible to the operative for the adjustment of the paper-stock, the plate and forms to be carried back automatically under the platen and independently and rigidly locked in position for the action of the forms as soon as the platen commences to descend. In addition to this the shifting-plate is arranged to carry two sets of forms to slide out on each side of the machine, so that two operatives can be employed, and the speed and capacity of the machine can thus be doubled, the details of the construction and operation of which will be hereinafterparticularly pointed out andclaimed.

In the drawings, Figure l is a rear elevation of an embossing-press with my improved mechanism. Fig. 2 is a side elevation of same viewed from the left of Fig. l, omitting the fiy-wheel and pulleys. Fig. 3 is a detail side elevation of the shifting mechanism viewed from the other side. Fig. 4E is a detail of the clutch for the shifting mechanism. Fig. 5 is a detail side elevation of the bedplate. Fig. 6 is a cross-section of the bedplate enlarged.

I have illustrated my invention in connection with a form of press such as is shown in my Patent No. 633,295, issued September 19,

plate, which is hung upon the upper ends of the pulling-bars F F. H H are a pair of toggle-links, one pair for each corner, pivoted above to the framework and below to the lower toggle-links L L, arranged in corresponding pairs, with their lower ends pivoted to the lower ends of the pulling-bars F F.

D D are two cross-heads pivoted to the pairs of toggle-links at their inner ends and connecting the corresponding toggles on opposite sides of the machine.

The central portions of the cross-heads D D are enlarged and formed with vertical slots (1 a, within which the studs on the cranks M M engage, the studs being mounted in suitable boxes. These cranks are mounted on a crankshaft, which carries a worm-gear O, which meshes with a worm P, mounted on the main horizontal driving-shaft R of the machine. One end of this shaft carries the fly-wheel S and the usual friction-clutch pulley T, by means of which power is applied for driving the shaft R and operating the machine. I

Myimprovementsin the feedingmechanism forsuch presses, while designed for use with the general form of press above described, will be equally well adapted to other forms of die and embossing presses, and 1 do not wish to be understood as limiting myself to the particular form of press above set forth.

A is a plate upon which the matrixt'orms for the press are mount-ed in the usual way. This plate is of a width to extend entirely across the bed of the machine and of a length double the depth of the bed, so that when one half of the plate is under the platen the other half extends out infront or rear, so as to be readily accessible to one of the operatives stationed on each side of the press. The plate is provided with acentral tongue 0 to ride in the groove in the bed-plate B and also with the tonguesd cl at the sides to ride in T-slots in the bed'plate, so that the plate A in sliding back and forth, as will be hereinafterdescribed, will be guided accurately. The bedplate B is in the shape of a wedge, resting on the inclined surface of the bed-frame or table, and a screw e, taking into this bed-plate B and mounted in a boxfon the bed-frame, is employed to shiftthe bed-plate in either direction, and thus to adjust accurately the height of the bed.

Bolted to the rear of the frame is a bracket G, in which is mounted the shaft D. This shaft carries the crank E, connected by link F with the shifting-lever G, fulcrumed to the bracket at g. The upper end of this lever G engages the depending lugs h at the outer edge of the plate A, so that as the shaft D is rotated with each half-revolution the lever is shifted to slide the plate A the limit of its throw in either direction. As this movement of the plate A is to take place only during the ascending movement of the platen E, I provide as follows: Pivoted to the lug Z on the side of the frame is a lever H, connected by a link I with the platen E. The outer end of this lever H carries the depending rackbar K, pivoted thereto and sliding in a guide 7', which rack engages the pinion L, loosely mounted on the shaft D. Keyed on the shaft D and abuttingagainst the pinion isaclutchdisk M, provided on its abutting face with recesses m m to receive the spring-pressed dogs 11 77., mounted in holes in the pinion, the dogs being pressed toward the disk M by the spiral springs 19 19. These recesses m mare beveled in one direction and form a shoulder in the other, so that the dogs will. only lock the pinion to the shaft-disk when the pinion is rotated from left to right, and the recesses are disposed at points substantially at right angles to the dead-center of the crank E to allow for some rotation of the pinion L before the disk M and shaftD become locked thereto. It will be evident from the above description that when the platen E and the rack-bar K are descending the pinion L will run free and that only after the platen has started to ascend will the crank-shaft D be rotated to actuate the lever H to shift the matrix-carrying plate A. In order to steady the movement of the shifting-lever G, I employ a stud ct upon which to fulcrum the le ver to the bracket and mount thereon a spiral spring I), bearing between the nut and washer c and face of the lover. The nut can be adjusted to supply the proper tension upon the lever. To prevent any overthrow of the shifting-lever G, I mount on the shaft D, secured to the hub of the crank E, a disk f, provided on its periphery with an ordinary springpressed shoe-brake g, carrying a stud 72., mounted in a sleeve m on the bracket 0'. It would hardly be proper, however, to rely on the mere shifting of the plate A, under the mechanism so far as described, to obtain an accurate adjustment of the embossing-forms. In a very short time the Wear of the parts would cause inaccuracyof throw, and in addition to this it is necessary to lock the forms rigidly in position under the enormous pressure to which they must be subjected in the process of embossing. To accomplish this locking feature, I provided as follows: N is the locking-lever, fnlcru med at s on the frame and having its lower end pivoted at f to the knuckle-joint '1) of one of the pair of toggles H L. The upper end of this lever has secured thereto along the side of the frame and provided with a beveled edge at its extremity a sicklebarg held and guided under the strap Lb on the frame, under which the bar fits snugly. Lugs w are provided depending from the lower side edge of the plate A, one at the end of the plate and the other near the middle thereof. These lugs are so located that when the plate A is in exactly the proper position, either in or out, for the action of the dies the corresponding lugs will register exactly with the beveled end of the sickle-bar 'y and be engaged thereby, thus securely locking the plate in position. This engagement IIO only takes place during the descent of the platen. As the knuckle-joint of the toggle approaches the frame of the machine the end of the sickle-bar engages the lug on the plate A and holds itlocked while the platen descends. As soon as the impression has been made and the knuckle-joint of the toggle starts away from the frame the sickle-bar is at once withdrawn from its engagement with the lug w on the plate A, and the plate is then shifted, as heretofore described, to be again locked in its other operative position. The locking'lever is released before the pinion engages the disk M by arranging the clutch as heretofore described. The end of the sicklebar is beveled in order that proper engagement may be had should the throw of the shifting-lever G not bring the plate A into the exact position required.

The advantages of my improvements will be manifest. I automatically shift the elect-rotype-plate into an accessible position after each operation, and this is done first on one side and then on the other, so that by em ploying two operatives I double the capacity of the machine. 1

For working the machine from both sides it is necessary to have two sets of lower forms mounted on the plate A, so that when one set is being shifted int-o an accessible position for the operative to remove the embossing-sheet and to place a new sheet in position the other form is carried under the platen for the next operation.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, is

1. In a press of the character specified, provided with a platen and means for actuating same, a reciprocating plate for the lower forms, connecting mechanism intermediate said platen and plate, for shifting said plate under the back stroke of the platen, and a locking device independent of said shifting mechanism connected with said platen-actuating means to lock said plate during the forward stroke of the platen, substantially as described.

2. In a press of the character specified, the combination with the platen and mechanism for actuating same, of a plate for the lower forms, shifting-lever engaging said plate, shaft carrying a crank coupled to said lever, rack-bar connected with the platen, and pinion loosely mounted on said shaft engaged by said rack, with clutch between the pinion and shaft, whereby said pinion may be locked to the shaft when the movement of the rack is in one direction and may run free when the movement is in the other direction, substantially as shown and described.

3. In a press of the character specified, the combination, with a platen and pulling-bars, with toggle-levers pivoted thereto and to the frame for actuating same, of a reciprocating plate for the lower forms, and connecting mechanism intermediate said plate and platen for shifting said plate, lugs on said plate and a locking-lever to engage said lugs connected with one of said toggle-levers and operated thereby to lock the reciprocating plate when the toggles are moving in one direction and to release same when the toggles are moving in the other direction, substantially as shown and described.

CHARLES SEYBOLD.

Witnesses:

J. EDWARD SAUER, FRANK H. HERBST.

Images