US399903A

US399903A - kennedy

Info

Publication number: US399903A
Authority: US
Publication date: 1889-03-19
Anticipated expiration: 1906-03-19

Description

(No Model.) 3 Sheets-Sheet l.

lvLKENNED-Y.

DEVICE FOR UPSETTING AND BENDING METAL. No. 399,903. Patented Mar. 19, 1889.

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MARTIN KENNEDY, OF IIEGElVISOI-I, ILLINOIS, ASSIGNOR TO THE UNITED STATES ROLLING STOCK COMPANY.

DEVICE FOR UPSETTING AND SENDING METAL.

SPECIFICATION forming part of Letters Patent No. 399,903, dated March 19, 1889. Application filed October 6, 1888. Serial No. 287,387. (No model.)

To all whom it may concern:

Be it known that I, MARTIN KENNEDY, of

H egewisch, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Devices for Upsetting and Bending the Ends of Metal Rods, of which the following is a specification.

My invention relates to dies for producing certain shapes on the end of round or polyg- 1o onal metal rods, which shapes afford a means of bolting or otherwise securing the ends of said metal rods.

My invention also relates to devices for bending said rods while held in said dies.

I 5 The chief use to which I have contemplated applying my invention is the making of the iron ladder-steps commonly used on freight cars.

My invention consists in the parts and combinations hereinafter described and claimed.

In the drawings, Figure 1 represents a machine titted with my improved dies. Fig. 2 is a top view of one of the dies. Fig. 3 shows the face of the same in elevation, and Fig. at

is an end view looking from the left of Fig. Fig. 5 is a plan view of the other die, and Figs. 6 and 7, respectively, show the work partly and fully finished. Fig. 8 is a top view of the first die having attached thereto a retaino ing-strap, which serves in some instances to pull the work operated upon from the punch when the latter is withdrawn. Fig. 0 is a top view of the second die carrying the punch, the View being like Fig. 5, except that the col- 3 5 lar 21 of the punch is thinner, in order to allow room for the retaining-strap, before mentioned. Fig. 10 is a face view of the first die corresponding to Fig. 3, but showing in addition the retaining-strap attached. Fig. 11 is a face view of the second die.

As the machine for operating the dies forms no part in itself of the present invention, a brief description of it will snflice.

At one end of the frame 2 is a driving-shaft,

5 3, which, through the gears a and 5, crank 6,

and pitman 7, imparts a reciprocating movement to the cross-head 8. The curved arms 9, projecting from the cross-head S, operate the slides 10,'in which are fixed the dies 11. and 12.

The formation of said die 11 will appear from Figs. 2, 3,-and +1. In the face of the die is a groove, 16, corresponding in shape to a halfsection of the rod or bar to be operated upon. As in this case the bar is supposed to be round, the groove is semicircular. The groove 5 5 16 extends about half-way across the face of the die and merges in a cavity, 17, which is the shape of a half-section of the foot 26, Fig.

6 or 7, to be formed on the rod. As shown, a tongue, 19, Fig. 2, is formed on each die, by which it may be secured to one of the slides 10. The opposite die has a similar groove and cavity in its face, as shown in Fig. 11.

Forming a part of die 11 is a piece of hardened steel, 13, Fig. 3, set into its face and retained in place by the wedge 18. In the face of the steel piece is a cavity, 15, conforming in shape to the foot 26. A groove, let, across the top of the die receives the body of the rod. The cavity 15 and groove 1 1 might of course be out directly in the cast-iron forming the rest of die 11; but for durability it should be made in steel, as described. A hole, 28, is drilled in the center of cavity 15, and a punch,

20, Fig. 11, is affixed to the opposite die to register therewith.

The operation is as follows: The rod, heated to nearly a welding temperature, is placed between the dies, a suiiicient length projecting into the cavity 17 to form the foot 26. The advance of the cross-head 8 closes the dies, and a plunger, 24, Fig. 1, of a section corresponding to that of the cavity 17 when the dies are closed enters said cavity and upsets the me al, the result of this operation being the shape shown in Fig. (3. Upon the withdrawal of the cross-head and the opening of the dies the rod is removed and placed in the groove 14, with the foot 26 in the cavity 15. When the dies again close, the punch 20 makes 0 the bolt-l1ole in the foot 26. From the crosshead 8, Fig. 1, an arm, 23, projects, at the end of which is a roll, 25. As the cross-head 8 nears the end of its stroke, the roll 25 strikes the rod 27 and bends it to the shape of the angle 22, Fig. 2. The bend so given to the rod 27 serves to hold it in place While the punch withdraws; but when it is desired to leave the rod straight the retaining-strap 29 (shown in Figs. 8 and 10) may be used. It consists simply of a bent iron strap crossing the cavity and having a hole for the passage of the punch 20, held on the die by bolts 30, which pass through slots in its ends. The slots allow the strap to lie close to the die while the punching is done and to move back afterward sufficiently to permit the removal of the foot 26 from the cavity 15. Of course when the strap is used the collar 21 of the punch must be thinner than that shown in Fig. 5 by the thickness of the strap.

By the formation of the dies described I am enabled to complete the forging at one heat, no time being lost in transferring the pieces from one place to another. The same movements of the machine and dies which perform the upsetting likewise serve to do both the punching and the bending, or either, as maybe desired. One machine may be made to do double duty, because two pieces may be operated upon at the same time, one being upset while another is being punched and bent.

I claim 1. The dies 11 and 12, having in their opposingfaces the grooves 16 and cavities 17 in combination with the plunger 24, the die 11 having also the cavity 15 and hole 28, and the die 12 having the punch 20, substantially as described.

2. The dies 11 and 12, having in their opposing faces the grooves 16 and cavities 17, the die 11 having also the cavity 15 and groove 14, in combination with the plunger 24 and the arm 23, substantially as described.

3. The dies 11 and 12, having in their opposing faces the grooves 16 and cavities 17, in combination with the plunger 24, the die 11 having also the cavity 15, the hole 28, and the cleaner 29, and the die 12 having the punch 20, substantially as described.

4. The dies 11 and 12, having in theiropposing faces the grooves 16 and cavities 17, the die 11 having also the cavity 15, hole 28, and groove 14, and the dies 12 having the punch 20, in combination with the plunger 24 and arm 23, substantially as described.

' 5. The combination of the die 11, having the cavity 15 and the groove 14, with the die 12 and the arm 23, substantially as described. MARTIN KENNEDY. WVitnesses:

J. I. VEEDER, P. H. T. MAsoN.