US29431A - Machine foe the manufacture of pins - Google Patents

Description

2 SheetsSheet 1. T. &D. G. FOWLER PIN MACHINE.

Patented July 31, 1860.

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2 Sheets-Sheet 2. T. & D. G. FOWLER. PIN MACHINE. No. 29,431. Patented July 31, 1860.

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THADDEUS FOIVLER AND DE GRASSE FOIVLER, OF NORTHFORD, CONNECTICUT, ASSIGNORS TO UNITED STATES PIN COMPANY, OF SEYMOUR, CONNECTICUT.

"- MACHINE FOR THE MANUFACTURE OF PINS.

Specification of Letters Patent No. 29,431, dated July 3 1, 1860.

T 0 all whom it may concern:

Be it known that we, THADDEUS FOWLER and DE GRASSE FOWLER, of Northford, in the county ofNew Haven and State of Connecticut, haveinvented, made, and applied to use certain new and useful Improvements in Pin Machinery; and we do hereby declare that the following is a full, clear, and exact" description of the construction and operation of the same, reference being had to the annexed drawing, making part of this specification, wherein Figure l, is a plan of our said machine. Fig. 2 is a side elevation. Fig. 3 is a vertical longitudinal section. Fig. l is a cross section through the rolling bed and cutters, and Fig. 5 is a plan of the heading and cutting die and the rolling bed.

Similar marks of reference indicate same parts.

Our invention relates to the means for conveying the pin from the heading die to the pointing cutters and, performing the operation of pointing. In all machines heretofore constructed with which we are acquainted more or less difficulty arises in revolving the pins while being pointed, and in consequence the points are apt to be imperfect and flat on one side, this arises principally from the device employed to roll the pins around, acting on the same side of the body of the pins as the files or cutters, in other words, as a general thing the pins have been rolled over a stationary surface by a belt or other device acting on the upper side of said pins and the cutters also acted on the upper side at the end to point the pins, therefore the action of the cutters was to detain the pins against the progressive and rolling motion from the belt. In our invention we apply the files or cutters on the same side as the stationary belt or resisting surface and apply the rolling bed on other side of the pins, thereby the files or cutters assist in insuring the revolution of the pins. lVe also make our stationary belt or resisting surface in the arc of a circle corresponding to the rolling bed which is itself of cylindrical form, by which means we are enabled to obtain a resisting surface on which the pins roll that will give the pressure on the pin necessary for revolving the same and even straightening it if slightly crooked and at the same time give opportunity for the a long sweep or vibration of the file or cutter over the pin, which prevents the cutters clogging and gives a better shape to the pin point.

In the drawing a, is a shaft revolved by competent power and sustained on the bed Z), of the machine; 0, 0, are bevel gears driving the second shaft (Z, from which a belt 1, passes to the rollers; e, c, that feed in the wire these rollers are pressed together onto the wire by suitable springs and continue to project the wire into the machine whenever opportunity is given for so doing by the heading jaws opening; when these jaws are closed the rollers either slip on the wire or the belt slips on the pulleys.

The heading jaw f, f, is operated by the cam g on the main shaft a, and h, is the heading die actuated by the lever h, and *ams 2, 2, 2. The wire passes into grooves between the jaws f, f, and is by them clamped at each blow of the header h, the jaws releasing the wire slightly between each blow in consequence of the flat places in the cam 9, so that the feed rollers can move the wire slightly endwise as the head is formed by the successive blows as now practiced. It has been usual however heretofore to open the jaws and cut off the pin and force it out, the act however of so doing often causes the pin to jump out suddenly and hence it does notpass properly into the next part of the machine; we therefore provide the finger i, kept down by a slight spring 8, and occupying a cavity formed for that purpose in the upper jaw f, and said finger has a notch with a flaring mouth so that the pin wire can pass along in the groove of the jaw f beneath said finger, and when the pin is cut off and passed out of the jaws this finger presses lightly on said pin and insures its proper delivery by the cutter iv. This cutter is is actuated by the cam 4:, drawn back by the spring 5, and has the cutting blade or end 7, acting to separate the wire and with the projecting toe 8 carry the headed blank out of the jaws f, f, and deliver it into the apparatus next set forth where the pointing is performed.

Z, is a third shaftgeared to a, by miter wheels Z, and 9 is a worm thereon driving the wheel m, on the cross shaft m. This shaft m, has on it gears 10, and 11, 11, the former connects to and drives the Wheel 12, and rolling bed a, on the shaft 13. This rolling bedis composed .of ringskeyed or around constantly by the joint operation of the rolling bed a, notched pin wheels 0, 0, and a resisting stationary surface 2). This resisting surface p, is formed by a strip of metal between two projecting arms 14, 15, the latter of which is fitted to turn and pro vided with a lever 16, and weight or spring whereby the metallic strip is kept toward the rolling bed with the power and tension necessary to cause the pins to roll.

17 is a thin leather belt between the strip 79 and the pins to make a better bearing surface for said pins to roll against, and this belt is wound on a stud 18, by the turning of which the belt can be drawn through under the strip 10 to bring a new piece of the belt to the proper place in case of one part thereof wearing out.

The pins as delivered from the cutting and heading jaws into the notched wheels 0, 0, are by them carried up, and a shield 19, see Fig. 5, prevents their falling out while an incline 2O slides them endways until the heads of said pins take the groove 21, in n, and shield 22, behind the heads prevents the pins being moved endways as pointed. A small grooved compression plate 23 extended from 22, presses on the pin heads as they roll beneath it and by oint action with the groove 21, compresses and rolls down any slight bur or inequality in the heads. The pins after being pointed as next described fall out into any suitable conductor or receptacle or are removed from the notched wheels 0, 0, by a small stationary tongue of metal and fall into a box or other receiver.

The device for pointing consists of several files or cutters, we have shown four, two of them have a long sweep or movement for taking ofi the metal and shaping the point, the other two have a less movement and are finer cutters to burnish and finish the points. Each of these cutters s, s, t, t, is formed with a slide on the upper part thereof working through an arm u, extending from the arch '0, and 24:, 24, are springs pressing the cutters down. The arms a, u, may be adjusted by set screws so as to prevent the cutters touching the edge of the rolling bed n, or removing too much of the pin point. The cutters s, s, are reciprocated by the rock shaft 10, and connecting rod w, to the crank pin 25, on the end of the shaft d, and the cutters t, t, are reciprocated by the rock shaft 00, connecting rod :0 and lever 02 operated on by the cam 26, on the shaft (Z. This cam having three or more points gives a short quick movement to the finishing cutters t, 7?, while the roughing cutters s, 8, re-

ceive a longer and slower movement.

The statlonary resisting surface 1), being curved to the rolling bed enables us to use only a thin plate under tension, and thereby but little space is occupied above the pin, we are therefore able to use cutters of any desired length and vibrate them freely over the points. This is of considerable importance, particularly in pointing iron pins because we can use cutters with a large extent of surface and a comparatively slow motion, so that neither the cutters or pins become heated; and the cutters will remain sharper longer than those now in use, and act to remove the metal in detail. The movement given to the cutters from the rock shaft w, dresses the points in a convex curved form that is the best shape for penetrating easily.

The advantages resulting from our machine as a whole will be apparent, and as before indicated it will be seen that the pins roll under the cutters, and that these cutters acting on the same side as the stationary resisting surface do not interfere in the least with the pin rolling freely and revolving as it rolls.

WVhat we claim and desire to secure by Letters Patent is- 1. The spring finger 2', within the clamping aws for the purposes and as specified.

2. The combination of the cutter 7, and toe 8, with the finger i, for carrying the headed pin out of the clamping jaws and delivering the same into the notched pin wheels 0, 0, as set forth.

3. A rolling bed in combination with a stationary resisting surface and cutter or cutters, when said cutter or cutters act on the same side of the shaft of the pin as the stationary surface against which the pin rolls in being pointed, for the purposes and as set forth.

4.. The notched pin wheels 0, 0, and revolving and rolling bed a, constructed and operating substantially as set forth.

5. The metallic strip 10, kept at a proper tension by the lever 16, or its equivalent and pressing the belt 17 onto the pins in combination with the rolling bed and notched plates as and for the purposes specified.

6. The arrangement of the reciprocating cutters s, s, and t, 25, combined with the rolling bed as described and shown.

In witness whereof we have hereunto set our signatures this twenty seventh day of June 1860.

THADDEUS FOWVLER. DE GRASSE FOWLER.

Witnesses:

LEMUEL V. SERRELL, CHAS.,H. SMITH.

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