USRE5136E - Improvement in machines for making eyelets - Google Patents

Description

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Improvement in Machines for Making Eyelets. No. 5,136. 7 Reissuad Nov.5,1872.

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J F. RICHARDS.

Improvement in Machines for Making Eyelets.

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J. F. RICHARDS.

Imprqvement in Machines for Making Eyelets.

N0. 5,136. Reissued Nov. 5,1872.

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UNITED STATES ATENT FFICE.

JESSE'FpRIGHARDS, OF ATTLE BOROUGH, MASSACHUSETTS, ASSIGNOR, BY MES NE ,ASSIGNMENTS, 'IO- AMERICAN EYELET COMPANY.

IMPROVEMENT IN MACHINES FOR MAKING EYELETS.

Specification forming part of Letters Patent No. 44,555, dated October 4, 1864; reissue No. 5,i36, dated November 5, 1872.

To all whom it may'conccrn:

Be it known that I, JESSE F. RICHARDS, of

' Attleborough, in Massachusetts, formerly of circular planchet of metal.

In the accompanying drawing, A is the main shaft, to which motion is communicated by means of a belt passing over the driving-pulley 13. Upon this shaftare mounted the two principal cams D E, from which the motions hereinafter mentioned for forming the eyelet are derived. The stock is fed to the machine in the form of a thin strip or ribbon of suflicient width to allow a planchet to be cut from it. The strip of metal passes between the pressure feed-rollers a a and is fed forward at the proper moment by the rollers, which are put inmotion for a limited time during each revolution of the main shaft by the wheel F, upon whose periphery there are only so many teeth as, with reference to the number of teeth in the gear-wheel G and beveled wheels G G carry forward the strip the requisite distance to allow the cutting out of the successive planchets. As these pressure feeding-rollers a a are subjected to a considerable strain I prefer to give increased strength to this part of the machine by extending the shafts 0 0, upon which they are mounted, through a crossframe, (I, which forms for them upper bearingjournals, and also to provide the upper end of each above the bearingwith toothed wheels of equal diameters, which mesh into each other. In front of the main shaft and parallel with it are arranged a compound die and female cutter and a compound male cutter and former, Fig. 4. This compound male cutter and former consists of three principal parts-a central cutter and punch, 1, a surrounding former, 2, and an external surrounding cutter, 3. The compound die and cutter consists of a fcmale cutter, 4, a die, 5, and a second female cutter, 6. The office which each performs will presently appear. I

Suppose, now, the machine to be in operation. By tracing the successive steps taken to form an eyelet the motions and functions of the sew eral parts of the machine will be readily understood. The strip of stock having been carried by the feed-rollers far enough to cover the first opening 4 in the die, the cam 1), acting upon the lever H, which has its fulcrum at 11, moves forward the sleeve I, with which it is connected by the pin 0. This sleeve has an end bearing against the flanch f of the male cutter 3, and consequently carries it against the strip of metal, and continuing on acts, in combination with the female cutter-at, to cut out a planchet. As soon as this is done the cam E commences to act on the lever J, which is pivoted at J, and moves forward the spindle K. This movement causes the former 2, with the punch 1, which is sheathed within it, to act against the planchet, and continuing on shapes the same, in combination with the die 5, into the form of a cup or capsule. YVhile this is being done the cam D has completed its action, when the lever H, acted upon by the spring L, carries the sleeve I and the cutter 3 back to its first position. While the former 2 is acting to shape the metal in the die 5 the punch 1, which projects beyond it, forces the capsule into a deeper recess in the die at the bottom of which is the female die 6, through which the end of the punch passes and cuts out the top of the capsule. The eye let is now formed into the proper shape, a fianch being turned upon its edge by the action of the end of the former 2, in combina tion with the interior die, at the same time that the punch 1 forces the capsule into the recess and cuts out the closed end. The cam E now permits the former 2 with the eyelet upon it, from the action of the spring m, to fl y back within the cutter 3 as a sheath, whereby the eyelet is instantly stripped off. At the same instant that the former is withdrawn the wheel 0 on the main shaft, Fig. 3, which has a portion of its surface 0 cut away, permits the shield N, which rides upon it, to fall and cover the mouth of the die in order to prevent the eyelet, which is stripped from the former 7 2 with violence, from being shot into the cavity of the die. As the cam-shaft continues to revolve the shield is raised, the feeding-rollers bring forward another space the strip of metallic stock, and all the preceding operations are repeated.

The machinery above described is adequate to perform all the operations necessary for the manufacture of finished eyelets from a fiat strip or ribbon of metal With'out intervening manipulation.

What I claim as my invention, and desire to secure by Letters Patent, is-- 1. The combination ofa punch, 1, a former or male mold, 2, a cutter, 3, a female cutter, 4, a die or female mold, 5, and a female cutter, 6, substantially as described, for the purposes specified.

2. I also claim the combination of suitable feeding devices a a with the devices 1,2, 3, 4, 5, and 6, for forming eyelets from a metal strip, substantially as described.

agree ing together the stationary instruments inthe formation of an eyelet.

5. I also claim, in combination with the stationary instruments above mentioned, wherein the eyelet is formed, a shield, N, applied and operated in the manner substantially as described.

JESSE F. RICHARDS.

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