US43772A - Improvement in pointing wire for pins - Google Patents

Description

O. L. HOPS'ON & H. P. BROOKS. POINTING- WIRE FOR PINS. No. 43,772, Patented Aug. 9, 1864.

UNITED STATES PAW ORIN n. norson AND HEMAN P. BROOKS, OF WATERBURY, oonnnorionr.

IMPROVEMENT IN POINTING WIREFOR PINS.

Specification forming part of Letters Patent No. 43.772, dated August 9, i864.

To all whom, it may concern.-

Be it known that-we, ORIN L. HOPSON and HEMAN P. Bnoons, of Waterburyyin the county of New Haven and State of Connecticut, have invented, made, and applied to usea certain new and useful means ior pointingwire or rods for pins, &c.; and we do hereby declare-the following to be a full, clear, and exact description of the said invention, referencebeing had to the annexed drawings makinn part of this Specification, wherein- Figure 1 is a longitudinal section of our improved means for pointing Wire, and Fig. 2 is an end view representing the camsf'or actuating the pointing-dies. 7

Similar marks of reference-denote the same parts.

The nature of our said invention consists in pointing wires or rods by a revolving divided diethat is pressed together two ormore times during each revolution, said die being of the shape required for the point, and hence the wire forming the point is gradually compressed and extended to the form and shape required at said point without producing any burr, (as is usual in the compressing and pointing dies heretofore employed,) and the point is consolidated and rendered much harder that when reduced or grinding.

1n the drawings, a is the'inandrel head or frame carrying the mandrel or shaft b, that is driven by competent power applied at the pulley or wheel 0. Near the end of this shaft b is a longitudinal grooveor recess receiving the jaw 07, that is held in place by the cross-pin e, or other suitable means, so that said jaw 01 can receive a slight swinging or opening movement to receive the wire between the parts on the line of the center or axis of the said shaft b.

f is a ringaround b and d, with a screw, 9, passing through the same and entering a cavity in d. This screw graduates the amount the jaw 02 can move or open for the admission of the end of the wire to be pointed.

i i are d-ie's formed with an opening of the shape of the pointrequired, and the respective parts of the die are attached to b and d, so that the cavity in said dies is on the axial to shape by filing line of the shaft b. Around the end of this shaft b is a stationary ring, h, with radial slots receiving the cams k, thatare adjusted by the screws l or other suitable means.

The mode of operating this machine is as follows: The endof the piece of wire to be pointed or otherwise shaped is entered between the dies 2' i and pressed into them, which slightly opens said dies. The revolution of the shaft 0 brings the projection 0 of the jaw d into contact with the end of one of the cam-3k, which cam is adjusted so that it will close the dies 2' Land in so doing compress the wire or rod, and these operations are repeated, the end of the wire being'pressed in a little farther each time the jaw is releived and allowed to slightly open, until the point is perfectly formed, which point is of the shape of the die-opening,.and is compressed and ex. tenedwithcut forming an y burr or projection on the same, and the point is rendered much harder by this compressing actionthan would be the case if the metal was filed or ground away to form the point.

It will be. evident that if only two cams ]a were employed'they would require to'be at right angles to each other, so as to operate on both sides of the wire, and where a large number of radial cams are used the operation of forming the point will be effected equally fast with a slower rotation of'the shaft b than in case where but few of these radiating cams are employed. This mode of pointing has the effect of smoothing the surface acted upon by the rotary movement of the dies.

The mechanism herein set forth may be employed for shaping in a circular form any other article besides a point to which it may be adapted.

It will be evident that there is no waste of material, as the point is compressed and elongated, thus ett'ecting-a saving of stock over the methods heretofore pursued, and making a much better article.

What we claim, and desire to secure byLetters Patent, is-

1. Pointing wires or rods by a revolving divided die that is pressed together substantially as and for the purposes specified.

cams k,- revolving shaftb, aw d, and dies 27, 186;. v 4 substantially as specified.

' 3. The ring f and screw g,"in combination with the jaw d and dies ii, for regulating the amount said dies shall be allowed to open, as Witnesses: set forth. EDWARD T. BOAT,

In witness whereof we have hereunto set THEODORE S. BUD.

2. Thearrang'elilent of t he adjustable radial our sigmitures this 28th day of May, A. D.

Images