USRE3475E - Improved machine for making tapered wire-blanks - Google Patents

Description

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Letters PatentNo. V18,205, dated September 15,1857; lreissue Nm 3,475, dated Jane 1, 1869.

DIVISION A.

IMPROVED MACHINE POR MAKING TAPERED WIRE-BLANKS.

The Schedule -referred to in these Letters Patent and making part of the same.

.Know all men by these presents:

That I, G. Janson, of the city and county of Worcester, and Commonwealth of Massachusetts, havel invented certain new and useful Improvements in- Machines for Turning and Pointing Wire; and I do hereby declare the bllowing to be a full, clear, and exact description ofthe same, reference being` had to the accompan ying drawing, forming part of this specification,

and in lwhich- Fignre l represents a perspective view of somuch of the machine as is necessary to illustrate my present improvements,

Figure 2 represents a longitudinal vertical section through the parts or machine shown in fig. 1.;-

Figure 3 represents a top or plan view of the parts in one position; and

Figure 4 represents a top or plan view of the parts as they Iappear during `the operation of turning the improved machine for turning and pointing wires,-

iu which the Wire ispointed from the point to the body thereof, while the end of the blank to bepointed is supported in a central position Vby means of an eye or rest, which precedes the cutting-tool, thereby leaving the free end of the blankv to be acted upon by the cutter, which is modified in its movement by a pattern.

Pieces of wire, as pointed or tapered heretofore, for pins o r other similar articles, have been dressed or tapered from the body to the point, while by `my irnproved machine they are cut or turned from the point to the body, thus reversing the general operation.

In the drawings- A represents acase or stock, through a square mortise in which passes the shank B of the cutting-tool C, which protrudes orl projects therefrom, as seen in figs. l and 2.v

This shank B is made to it snugly in the mortise in the ca sc', but not so tight. but that it can be moved in the mortise to draw the cutter' C from' the wire that is being pointed, or allow 1t to approach the same after Vhaving been so drawn from it.

' On the part of the shank B which projects from the case A, is fitted a piece, D, which is held to the shank bya set-screw, a, or otherwise, and in the top of this p iece D there is a pin or standard, b, upon which is placed a friction-roll, c, which is held in place by a nut, d.

One end of a coiled spring, e, is fastened to the pin or standardb, while the other end of said spring is connected to the stud f, which projects up from the case A. v

The spring e is for drawing back the cutter after it has been forced into the case or Vstock A, and for holding it out, while the piece D serves to regulate the distance or citent to which the cutter can project from said case or stock.

Ou top of the stock or case A is pivoted, at li, a lever or pattern-frame, E, the forward end of which is bent downward and llattened out, (as seen at on, figs. l and 2,) and the rear end of said lever or frame has au arm, 11., upon it, which may be slotted, so as toy receive a pattern or plate, o, which designates or governs the form ofthe point or taper to be made.

This pattern or plate has a slot, 2, in one of its ends, through which and through the arm n passes a set-screw, lr, the other end of said pattern or plate o heilig held in place by the pivot or screw s, whereby said pattern can be adjusted and held close up against the friction-roll c.

In a proj ecting-piece, F, of the case or stock A, is screwed an eye or rest, c, the opening in which should be of the diameter of the piece of wire to be pointed or turned, and this eye should. be removable, so asto make the machine capable of pointing wires of dierent sizes, the shape of the point being determined by the lpattern or plate o, heretofore described.

The instrument or machine above described should or may be fastened to the dead-spindle of a lathe, in such a manner as to have the centre of the hole in the eye or rest e, and the point of the cutter, when projected out to its full extent,-exactly in line with the centre of the live-spindle, in the'head of vthe lathe.

One end of the piece of Wire tov be pointed is then fastened in the end of the live spindle, in any suitable manner, and said spindle set in motion, thereby giving to said piece of wire a rotary motion upon an axis in line with the point of cutter C and'the centre of the hole in the eye or rest e.

The spindle to which the pointing-instrument or machine is fastened or secured is now pressed toward `'the head-piece of the lathe, whereby the eye or rest v is forced over the end of the piece of wire to be pointed, which should fill the hole in said eye or rest.

The end of thewire, as it passes through the eye or rest, is turned or cut to a point by the cutter, which tits close up to the back of the rest, vas shown in the drawings.

As the dead spindle is moved in, thereby causing the rest dr eye to precede the cutting-tool, for supporting in a central position the unturned or untapered part ofthe blank, as it is approached by the cuttin tool the pont of the wire, in this instance, as v1t passes the cutter, presses against the hat part 'm of the lever or pattern-frame F', and forces it away from the cutting-tool, or rather, prevents that end from moving 'forward with the rest of the cutting, pointing,

' thus drawing the cutter gradually away from the wire, thereby turning, tapering, or pointing the end of the Wire, as shown in lig. 4 ofthe drawings.

It will be noticed that the action of the cam -or pattern modifies or regulates the taper of the point.l The edge of the plate or pat-tern o, shown in contact with the friction-roll, having a regular, outline,` modifies or regulates themotion ofthe cutting-tool,

so that a regular taper'is for1ned ,'as above described, While the other or oppositeY edge of the pattern being irregular, would so modify, control, or regulate the motion Vof the cutter that an irregular form would be turned, as shown' in red lines to the right of fig. 4, of the-'drawin gs, and said plate or pattern may be turned over for that purpose; besides, by turning the pattern or plate o on its pivot s, and then securing it in such adjustable position, the length of taper may be changed as desired. j

Thus, it will be seen, that by this machine, different sized wires may be turned and tapered, different tapers may be given, and different forms may be produced, and that, too, while the end of the wire turned is always on a line with the centre of the blank.

Although the operation of pointing wire is a very delicate one, so much so that it is allnost, if not quite, impossible to dress them accurately by the old modes of grinding or dressing, from the bodyto the joint, by my improved machine they are produced very rapidly and at the same time very perfect and uniform By referenceto the drawing in red lines, it will be seen that a tapered shoulder may be formed at some,

distance from the end of the blank, While such end may be turned in any desired tapering form, or with parallel. sides. v

A tapered'sholder may also be formed by commencing on the outer surface of the blank, and runv 'niug toward the centre thereof. In this instance, the

end of the wire would b e projected through the eye or rest, some distance beyond the cutter, before the tapering-operation would commence.

' Having described lny improved machine for turning and pointing wires.

What l claim therein as new, and of my invention,

4. The construction and arrangement, substantially' in the ymanner described, of mechanism for simultaneously gauging the blank and retiring the knife.

5. The arrangement of the reciprocating cutter C, projecting or supporting socket-piece F, and rest r, substantially as and for the purposes specified.

C. J ILLSON.

`iitnesses:

THos. H. DoDGn, Geo. H. MILLER.

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