US173155A - Improvement in harness-machines - Google Patents

Description

- 2 Shee tsrSheet 1.

' W. BARRY. HARNESS-MACHINE.

Patented Feb. 8,1875.

N.PE|'ERS, PHOTO-LITHOGRAPMER, WASHINGTON, D4 C 3 to a bench or other support.

WILLIAM BARRY, OF ROCHESTER, NEW YORK.

IMPROVEMENT m H AR wEss-MAcHlNEs;

Specification forming. part of Letters Patent No. 173,155, dated February 8, 1876; application-filed April 8, 1873. l

To all whom it mag concern:

1 Be it known that L'WILLIAMBARRY, of

q the city of Rochester, in the'connty of Monroe and State of New York, have invented certain new and useful Improvements in Machines for Punching and Stitching Leather; and I do declare that the following is a. full,- clear, and exact description ofthe construction and operation of the same;

This machine is intended for stitching heavy leather, such as harness, 870., where waxed threadsare used, but itis alsoada'ptedto lighter uses. sis-ts in holding the leather in-a' clamp, while the awl is intermittently fed along the length of asingle stitch at a time, and then is made to perforate the leather, after which the threads are passed through by hand; or, vice Versa, the punching apparatus may be'made stationary, 'while the clamp that holds the leather may befed intermittently, all ashereinafter described.-

In the drawings, Figure 1 is a planof my machine; Fig.2,a side elevation; Fig. 3, an endor front elevation 5 Figs. 4, 5 and 6, detail views.

A represen tsatable, which is firmly screwed B" isa frame screwed upon the table'and holding. the working. parts. O is theclamp for holding the leather. This clamp issimilar'toan ordinary vise -having one side,- a, stationary, while theother side, a, is jointed at b,-so asto-be opened for inserting or removing the leather; The movable part of thecla'mpis swiveled' orjointed, as shown at as, Fig. 5, so as to. turn horizontally, to adapt the clampto holding leather of varyingthickness- D isf'a stiff arm connected with the hingedside of the clamp.

' To the end of this arm. is connecteda link or connection, c, which extends: to thei'en'dof a le'ver, E, Fig'.- 3. The lever E-ispivote'd atd, and with itslongarm is. connected a'coiled q a p overboth th e' e ndo'f theshicldand the'ratch'et'i: teeth of the whee-1,1 and serves to give motion tothe' latter to teeth the carriageforwardl Tlie' spring, .orequivalent,-. a, attached-to the-standard F, by whichthe' proper reaction is pro:

duced to act through the inedinmof thelever' E,;link 0,-and arm-D, to press the clamp t0- getheri- Instead of this, any equivalent arrange-- ment' may be usedto close the clamp. G is a-rod connecting the end of the lever'E with The principle involvedconparts bywhich the punching is done.

the treadle H, pivoted at the foot of'the I Theleather, f,is simplyj'placed intheclam'p, edge up, and in line for sewing,asshown, andas-soonas the clamped length-is punched and sewed, it is unclamped and moved forward at new length, when thesame'operation is gone through again, the carriage being moved back at the same time to'start anew. v

I is a carriage restingcrosswise of the frame B, and carrying the awl and other working At the rear it has bearings g 'g, in which rests a shaft, h, At one end of the-shaft is a pinion; 'l, whichengages with a cog-rack, j, bolted l fast-to the frameB; When the shaft isturned the pinion, engaging withthe -cog=.raek-,

- gives motion to the carriage, and feeds it forward or backward. At; the opposite end. of the-shaft is a-ratchet-wheel, K, rigidly fast:-

enedthereon, and; provided with an axial handle, 1, by which the carriage is moved backwhen required.

Over the-rear part of the ratchet-wheel is a gage-shield, m, attached to a frame, L, i which isswiveled upon the shaft h, so asto turn up and down freely, and-:. thereby throw the shieldlarther-forwardor back; The hub of the-frame L has ataug or lug, it, against which reststhe-end of gage"screw,;. o,-.for the; setting of the position of the shield, which isdone by. hearing said tang. in, .orlletting. it

:ou't-.-v A coiled spring-,zor equivalent, is also attached to: the under; side of the frame L I connecting it with the ca'rria'g el, to 'holdthe ;shield down properly.- w l Asroc'k-arm, M, is also swiveled upon the shaft-hi, and extends upwards outside-thepe riphery of the ratchet-whack and. has pi v'otedto thehead-a pa wl-m, presseddowuby'a spring,

q,.or equivalent; The p'oint rot'this pawl plays length of the stitch will b'e' reghlated,-:there;= fore, by moving the shield 'npzto cover more or less=ofthe stroke of the pawlw in passing thrown back the reverse is the result.

surface and less upon the wheel, and when The length of the stitch there is adjusted with great ease and exactness. At the front the carriage I has bearings r r, in which rests a shaft, 8. On this shaft are jointed two crossheads, N and 0, so arranged as to turn independently of each other. The head N turns up and down vertically, and has a slight end movement; but the head 0 has, in addition to the vertical movement, an end sliding movement of considerable extent upon the shaft 8, to insert and withdraw the awl, as will present- 1y be described. These heads have, respectively, arms N and O, the one carrying a gage, t, and the other the punchor awl a. The gage is simply a wire or rod, which has a bent end, t, overlapping and turning" down over the outer edge of the leather, and nearly opposite the point of the awl, but leaving space enough for it to pass by through the leather. The object of the gage is to hold the edge of the leather in position against the pressure of the awl, and thereby insure perfect work. Something of the kind is necessary, for the leather, of itself, has not always sufficient stiffness and rigidity to oppose the pressure of the awl and keep its place. The shank of the gage is passed through a vertical slot in the head v of the arm 0, and a set-screw, w, is made to bear upon it. By turning this set-screw up or down the distance between the gage and the awl is varied, and consequently the awl is made to enter the leather nearer to or farther from its edge, thus varying the position of the seam in the same degree. This is an important feature in my invention. The gage, therefore, in addition -to holding the leather against the pressure of the aw], gages the width of the seam from the edge, whether that be in a straight line or curved. This arrangement also raises the arm 0' when the arm N is raised, as will be readily seen, thereby giving motion to the pawl by which the carriage is moved forward. This connection of the arms N and 0 may be produced by other means than that ,described,.

and with a similar effect. The gage is also held in position by a set-screw, :10, in the end of the arm N. and held in the end of the arm 0 by the setsercw y. On the under side of the arm 0 is a fork, Z, Fig. 3, which embraces the upper edge of a rock-frame, P, which is pivoted, at b b, to the end of the frame B. At the front this rock-frame has an arm, Q, Fig. 3, which arm, f, which is connected by a pitman, g,with V The awl is simply straight,

carriage along. 011 the under side of the head O is an incline, h, which, when the said head is thrown outward, rides upon the cam-head t of a vertically-adjustable bar, T. This action causes the arm 0 to turn up, and with it the arm N, by which means free space is left for the operator to pass the threads through the holes punched in the leather, thereby making the stitch.

Between the heads N and O is located a flat plate, V, which is pivoted to the head N, as shown at k, Fig. 1, and has an elbow end, l, which rests against the bearing 1" of the carriage. The long arm of this plate swings free, and is connected by a spring, at, with the head in such a manner that the tendency of the spring is to throw the long end of the plate outward. The upper surface of the head 0 has a pin, n,which bears against the outer cam-surface pof the plate. In the outward movement of the head 0 upon the shaft 8, the pin, sliding against the plate, forces thesame in against the spring m, and withdraws the end l from contact with the bearing 1. In the back movement of the head upon the shaft, the head N (which also has a slight end movement) is slid endwis'e far enough for the gage 't to drop sufficiently beyond the edge of the leather for its bent end t to be sure to engage, when the pin a releases from the cam-edge of the plate, the spring throws it out, and the elbow end l, coming in contact with the bearing 1' as a fulcrum, forces the head N back upon the shaft, and thereby draws the end t of the gage in contact with the leather.

If the edges of the leather always retained their upright form, andnever spread apart or turned over, this movement would not be necess'ary; but sometimes they become spread or turned over, and it is necessary to throw the gage far enough over to properly engage, and then draw it up so as to hold firm against the pressure of the awl. Any equivalent arrangement which will produce the same efl'ect may be used. For instance, an arm might be fastened to the carriage to extend outside the clamp a, with a rest and support for the edgeof the leather in front of the stitch, and moved along with the carriage, so as not to interfere with the sewing, with a similar effect.

I employ over the awl and gage a shield or bonnet, W, so arranged as to prevent the catching of the loops of the thread, which frequently fly upward, as the threads are drawn by the hands of the operator, and'are liable to catch on the projecting parts. tach this shield to the rods 10 w, which are hinged in the bearings y y on top of the head N. By this means the shield may be elevated or thrown back at any time.

in this machine it will be noticed that the punching is done automatically, while the stitching or passing the threads through is done by hand, and the punching is done intermittentl y by the feeding up either of the punch- I prefer to ating apparatus or the clamp, while the other part remains stationary. Leather sewing can be done more practically this way than by giving a constant feeding motion to the leather by running it through rollers or otherwise, as, in the latter case, it is difficult to keep the edges of the leather in position and hold them 'properly against the pressure of the awl.

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

1. In a machine for punching andstitching leather, the combination of the fixed clamp O, the carriage I, and jointed arms N and O", carrying the gage and awl, the whole operating substantially as described.

' by the horizontal sliding of the head 0 upon the shaft, substantially as described.

4. The combinationof the head 0, the incline h, and adjustable cam-bar T, arranged and operated substantially as described.

5. The combination of the head 0, which receives an end movement on the shaft .9, the

pivoted rock-frame P, having a flange which fits the fork z, and an arm, Q, connected with a rod reaching to the treadle, by which the motion is given, substantially as described.

6. The combination of the twofarms N O and the gage t, connecting the two arms, and

so arranged that the two arms carrying. the

gage and awl rise and fall simultaneously, substantially as described.

7. The combination of the awl u and the gage t, when arranged to rest upon the opposite side of the 'leather from the entrance of the awl, and resist its pressure, substantially as described.

8. The combinationof the heads N O and the plate V, arranged to produce a reaction upon the gage to draw it to place onthe leather, substantially as described.

9. In combination with the stationary jaw a, the movable jaw 00, extension D, bearing b, and swivel-bearing at, all constructed and ar-,

ranged substantially as described, for the purpose specified. I

In witness whereof I have hereunto signed my name in the presence of two subscribing witnesses. I

WM. BARRY.

Witnesses: 7

WILLIAM A. LoDER, R. F. Oseoon.

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