US44555A - Improved machine for making eyelets - Google Patents

Description

J. F. RICHARDS.

Making Eyelets.

1:i'tented Oct. 4, 1864.

N. FETERS. Pmmlumu ramr, Wnbington. n. c.

tries.

JESSE F. RICHARDS, OF PROVIDENCE, RHODE ISLAND.

IMPROVED MACHINE FOR. MAKING EYELETS.

Specification forming part of Letters Patent No. 14.555, dated October 4, 1854.

To all whom it may concern:

Be it known that 1, Jesse F. Rrcniinns, of

.the city and county of Providence, in the State of Rhode Island, have invented a new and useful Improvement in Machines for Making E yelets; and I do hereby declare that the following specification, taken in connection with the drawings making a part of the same, is a full, clear, and exact description thereof.

Figure 1 is a front elevation. Fig. 2 is a plan of the machine. Fig. 3 is avertieal section through the cam 0. Fig. 4 is a partial section through the line A B, showing the die and the former, which shapes the eyelet out of a circular planchet of metal.

In the accompanying drawings, A is the main shaft, to which motion is communicated by means of a belt passing over the drivingpulley B- Upon this shaft are mounted the two principal cams D and 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 sufficient width to allow a planchet to be cut from it. The strip of metal passes between the pressure feedrollers a a, and is fed forward atthe proper mo ment by the rollers, which are put in motion flI 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 plan chets. As these pressure feedingrollers a a are subjected to a considerable strain, I prefer to give increased strength to this part of the machine by extending the shafts c 0, upon which they are mounted, through a cross-frame, d, which forms for them upper bearing-journals, and also to provide the upper end of each above the bearing with toothed wheels of equal diameters, which mesh into each other.

In front of the main shaft and parallel with it is arranged a compound die and female eutter and a compound male cutter and former, Fig. A. This compound male cutter and former consists of three principal parts-a central cutter or punch, l 5 a surrounding former, 2, and an external surrounding cutter, 3. The compound die and cutter consist of a female cutter, 4, a die, 5, and a second female cutter,

6. The office which each performs will presently appear. Suppose now the machine to be in operation. By tracing the successive steps taken to form an eyelet the motions and functions of the several 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 D, acting upon the lever H, which has its fulcrum at 11, moves forward the sleeve I, with which it is con nccted by the pin 6. This sleeve has an end bearing against the flange f of the male cutter 3, and consequently carries it against the strip of metal, and, continuing on, acts in a combination with the female cutter 4 to cut out a planehet. As soon as this is done, the cam E (ommences 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 planehet, and, continuing on, shapes the same, in combination with the die 5, into the form ofa cup. While 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 cup 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 cup. The eyelet is now formed into the proper shape, a flange being turned upon its edge by the action of the end of the former 2, in combination with the interior die, at the same time that the punch 1 forces the cup into the recess and cuts out the top of the cup. The cam E now permits the former 2, with the eyelet upon it, from the action of the spring M, to fly 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 eye let, which is stripped from the former 1 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.

What I claim as my invention, and desi e to secure by Letters Patent, is

l. A compound male cutter, 3, former 2, and punch 1, in combination, as described, torthepurposes specified,constitutingtogether the moving instruments in the formation of an eyelet.

2. A compound female cutter, 4, former 5, and punch 6, in combination as described, for the purposes specified, constituting together the stationary instruments in the formation of an eyelet.

3. The combinatitn of the series of moving I instruments above mentioned with the series of stationaryinstruments above mentioned, in the manner substantially as described, for the purposes specified.

4. Operating the said moving instruments above mentioned in the order and in the manner substantially as described.

5. In combination with the stationary instruments above mentioned, wherein the eyelet iszformed, a shield, N, applied and operated in the manner substantially as described.

JESSE F. RICHARDS.

Witnesses:

THos. H. PEABODY, J. H. Srrnnss.

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