US308252A

US308252A - Die for and method of making spikes

Info

Publication number: US308252A
Authority: US
Publication date: 1884-11-18
Anticipated expiration: 1901-11-18

Description

H. GREER. D IY'B. PoR AND METHOD 0F MAKING SBIKBS.

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HOVARD CREER, OF CHICAGO, ILLINOIS.

DIIE FOR AND METHOD OF MAKING SPIKES.

SPECIFICATION forming part of Letters Patent No. 308,252, dated November 18,1884.

Application tiled December 3, 1833. (No model.)

To @ZZ whom t may concern,.-

Beit known that I, HOWARD Gnnna, a citizen of the United States, residing at Chicago, vcounty of Cook, State of Illinois, have invented or discovered a new and useful Improvement in Manufacture of RailwaySpikes and Machinery therefor', and I do hereby declare the following` to be afull, clear, concise, and-exact description thereof, reference being 1o had to the accompanying drawings, making a part of this specificatiomin which-like letters indicating like parts- Figure l is a front elevation of a machine for cutting and forming spikes, part of the housing being broken away to show the operating mechanism. Fig. 2 is a front elevation of the cutting and forming dies in a closed position, part of the lower die-being broken away to show the header. Fig.- 3 is a transverse vertical section on the line x w, Fig. l. Fig. l4 is a similar section on the line yy, Fig. 2. Fig. 5 is a perspective view of the working face of the lower die. Fig. 6 is a perspective view of the spike-blank. Fig. 7 is a perspective view of the completed spike.

My invention relates to certain improvements in the manufacture of spikes such as are employed in securing the rails of railway-tracks, in which I propose to use, by preference, Bessemer or open-hearth steel or steel rails, or the cross ends thereof, though iron may be employed, if so desired; but the granular' structure of the steel enables it to be employed more advantageously, since in 3 5 the absence ot' fiber the direct-ion of the line of cut is immaterial, and henceI will describe my invention with particular relation to the use of steel therein.

In working the present invention I iirst produce by ordinary methods of rolling a bar or blank approximately of the shape in crosssection of the spike to be made, a perspective View of such blank or bar being represented at A. The central part, b, is about the thickness of one side of the spike-shank when completed, and a rib, c, is made along one side of one edge of the blank,and the opposite edge is beveled, as represented at e; but the metal is so rolled that in the part a, which 5o goes to form the spike-head, enough metal is there secured to form the ears s, as also the rearward lip, s', such as are usually found in spikeheads; and preferably this excess metal is so disposed, as represented at c, that it shall be wholly in line with the shank b, so that when an endwise force is applied loy means of the header Hthe entire force of the latter will be operative on such excess a, and will not tend to any material extent to bend or distort the metal ot' the rib a, from which the overlapping lip s2 of the spike is made. This blank is to be cut up by transverse parallel cuts into a series of blanks, and the head part c is to be upset slightly, so that the eXtra or surplus metal therein may be swaged outl to form the ears s and the back lip, s. To do this work I employ a pair of dies, B B', and a header, H. The upper die, B, is secured to a plunger or die-carrier,

D, niountedin a housing, D', and is recipro- 7o cated by an eccentric, d, secured to a powershaft, d. This die has a form of face corresponding in shape to that of theupper side of the blank or to the headed side ofthe spike. The lower die, secured to the foundation or bed of the machine, has a face corresponding'in shape to that of the lower side of the blank A.

The header H is suitably arranged to reciprocate back and forth beneath the work- 8o ing-face of the upper die and back of the lower die, and it receives a reciprocating motion by means of a suitable connection with the driving mechanism, such as shown, l where the header is attached to the arm p of the rock-shaft p, the other arm, p2, ofthe rock-shaft being attached to the connectingrod o of the eccentric di, secured to the power-shaft d. The width of the working-face of the upper die is equal to the width of the spike-blank to be cut off, and beneath this face is a'vertieal wall, g, which acts` as a stop in the feeding of the blank. In this vertical wall, and immediately opposite the headed end of the spike-blank when fed therein, is a groove, g', in the proper position and of suitable length and depth for the forming therein of one of the ears s of the spike-head. On the inside of the lower die is a ledge, r, of proper length and shape and position, so that after a blank is cut by the downward stroke of the upper die its shank and point will be IOO gripped between such ledge and the workingface of the upper die. In the inner wall of the lower die a slight recess, o", is made immediately opposite the groove g, and the end of the ledge r is also rounded off at the same point. In this recess the other ear s is made, and over the rounded corner of the ledge r the back lip, s', s made. rIhe formation of these ears and lip is effected by the forward stroke of the header II, which is caused to advance as the upper die, B', comes into gripping position, so that bythe action of the header on the part a of the blank the excess of metal in such part awill be caused to iiow out laterally into the grooves g o" and into the cavity formed by the rou nded corner of the ledge, and 'thereby form the ears s and the back lip, s.

In so far as relates to the form or forms of the blank herein shown and described, the same is not claimed, but will form the subject matter of -an application to be filed in due time.

In application No. 113,386, filed December 3, 1883, I have described and claimed a machine for forming lateral ears on a spike-head by means of the compressive action of a die moving at right angles to the body of the spike; but in the machine described and claimed herein the lateral ears are swaged out by a. heading-die moving in a plane parallel with the length of the spike.

I claim herein as my invention- 1. The die B, provided with the vertical wall g, having therein the groove g', opposite the head of the blank and 011 one side thereof, in combination with the .die B', provided with the recess r opposite the head portion of the blank, but on the other side thereof, and the header H, substantially as set forth.

2. The die B, provided with the vertical Wall g, having therein the groove g opposite the head of the blank and on one side thereof, in combination with the die B', having the recess r opposite the head of the blank, but on the opposite side thereof, and having also the ledge r cut away opposite the groove r', and the header H, substantially as set forth.

3. The herein-described method of malinfacturing spikes, which consists in forging or rolling a blank to approximately the size and x shape in cross-section of the finished spike, but with an excessof metal, as at a', on the head-for1ning edge thereof, outside the plane of nish of the spikehead, cutting spike blanks from said blanks by a series of parallel cuts in dies adapted to cut and grasp the spikeblank, and then expanding or expressing laterally out such excess of metal while the blank is held between thecuttingdies by a suitable header, substantially as set forth.

In testimony whereof I havehereunto set my hand.

HOWARD GREEK.

Witnesses:

WVM. C. DAYTON, JACOB GREMLY, Jr.