US185095A - Improvement in leather-stamping machines - Google Patents

Description

l ing devices.

JOSIAH B. GATHRIGHT AND JAMES C. WATSON, OF LOUISVILLE, KEN TUGKY; SAID JAMES G. WATSON ASSIGNOR OF ALL I HIS RIGHT TO JOHN J'.

HARBISON, OF SAME PLAGE.

IMPROVEMENT IN LEATHER-STAMPING MACHINES.

Specification forming partl of Letters Patent No. 185,095, dated December 5, 1876; applicationfiled April 24, 1876.

To all whom it may concern Be it known that We, JOSIAH B. GATHRIGHT and JAMES C. WATSON, both of the city of Louisville, State of Kentucky, have invented a new and useful Machine for Stamping Border Impressions and Designs upon Leather- Work 5 and We hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawings, which form a part of this specification.

The object of our invention is to provide a machine that will make impressions on leather similar to those made by hand-stamping.

, thermore, in stamping a border, one or more creased 7 or beaded 7 rows are made by a double-creaser,(a hand-toch) and a row of stamping is run on each side, after the crease has been made. This is all doneat one time by our invention-that is, a center crease is made, and both rows of stamping put on simultaneously, thus saving much time.

The frame-work of our invention consists of a strong base-plate, A A, for stamping upon, and a strong arm, B B, for supporting the Working parts, which is rmly set and secured upon one end of the base-plate, and extends out over the base-plate any desired length. The outer end of this arm is provided with the face lugs or projections C C, which form a basis for attaching and operating the stamp Through the arm B B extends the shaft D D, as indicated by the dotted lines, the rear end of which is provided with a pinion, M, or band-wheel, as may be preferred, by means of which the desired motion may be imparted toit, while the front end is provided with the peculiar-shaped cam or eccentric E, for lifting and dropping the stamp-bar, as

hereafter described. The eccentric E, as will be seen by reference to Fig. 2, has an abrupt dropi,77 from the highest to vthe lowest point on its working-face. lt lifts the stamp-bar F by means of the stud g, having anti-friction roller, and drops it suddenly after it has reached the highestpoint. The bar Fisheld in place and guided by two bolts or screws, P 1),'which pass through slots a a (see Fig. 2) in the bar,and screw Iirmly into the faces of the lugs C The stamp-bar is provided at its lower end with two beds orsockets for stamps; and, when placed in these, the stamps may be set in any desired position with respect to each other, and held in place by set-screws, pins, or other known devices. The stamps can also be removed at pleasure, and others substituted. The slotsaa are just long enough to allow the bar to be raisedto the highest point, and drop low enough for the stamps to reach within a thirty-secondth of an inch to the base or stamping plate, at which point the upper pin may form a stop, and thus prevent the possibility of the stamp cutting through the leather in thin, damp, or spongy parts. The lower slot is enlarged` at its upper end on the side nearest the operator (see Fig. 2') to allow the stamp-bar, when down, to be moved backward for feeding, as hereafter described. Pivoted to the face-piece C is afeedlever, H, the upper end of which is so placed as to be pressed outwardly by the eccentric at each revolution, while the screw T, through the lower end, presses against the stampbar, and causes it to feed.7 The screw enables us to increase or diminish the feed at to the highest point and drops it, the spring giving the force necessary to make theimpression on the leather. After' dropping the armar ""'rrefa stamp-bar the eccentric strikes the feed-lever H, whichfcrces the stamp-'barbackwardmnd thus feeds. As it is necessary thatthe stamp remain down, and press upon the leather in full force while feeding, the eccentricis "so shaped `that its shortest radius remains the same for some distance, thus giving `time "for" the feeding operation to be completed beforej it begins to lift the stamp-bar again. When the eccentric again lifts the stamp-bar the slots a a and bolts L P guide it into `perpendicular positioniagain, and"` also guide it, dur` ing its descent, for a suicient dist-ance to insure a true stroke. In order to make the desired crease between the two-1 rows ofwstamp.- ing a foot, X, is provided, (see Fig. 2,)afootbar, S S, to hold it in position, and a spring, W,\with regulating-screw n, (see Fig. 1,) to give thedesired pressure tothe foot. `This foot (see Fig. 2) rests `upon the leather just between the two stamps, and is` shapedbeneath so as to have one ormore longitudinal grooves like a saddlers double-creaser. As the stamps force the leather back under `this foot in feeding it makes the desired crease. `The creaser-foot may be inthe form' of a roller; in which ease it would,` preferably, be composed of two rollers, each beveled inwardly'onits creasing-face, and the arm should pass between them to the axis, so asA not to be in the way of the stamp when `strikingiand feeding.

Our machine may be run by any kind of` power. In most cases the pinion M, y-wheel Z, and spur-wheel Q, provided with crank-pin and crank to operate with footlever, are al1 that will be needed. Geared in this way a halfgrown boy can do with it as much stamping fectly than any Workman can do it by hand. We would remark that ourmachine may be used with only one stamp at the time, if desire`d,':"and"'withfor witho'utthe Creamer-foot.

. Havingithusydescribed ourinvention, what we claimas new, and.. desire to secureby LettersPatent, is" 1. The eccentric E, stamp-holding barF,

*spring K, and `feed-lever` H, combined and op` erating substantially as and for` the purpose herein shown anddescribed. H 2. Apresser-foot fora-leather-stamping ma- .,chine, having its under or pressure surface formed of two or more sharp edges, with a. concave surface orsurfaces between the edges, to form one or more creases or beads upon the leather, substantiallyas herein shown and described.` '4

3. A presser-foot `for leather-stampingmachine, adapted to work between the two stam ps,

substantially as" herein" shown and described. Ina 'machinefor stamping purposes the combination ofthe stamping-base A, arm B, shaft D, eccentric' E, stamp-bar F, spring K, feed-lever H, and presser-foot X, substantial ly as herein'shown and described. 1

SWitness our hands this 21st day of April, 1 76.

JOSIAE `B. QGATHRIGHT. I J. 0. WATSON. r y `Witn`esses:

J oHN J. HARBIsoN,

O. GATHRIGHT, Jr.

Images