US267634A

US267634A - To the

Info

Publication number: US267634A
Authority: US
Publication date: 1882-11-14
Anticipated expiration: 1899-11-14

Description

(No Model.) 2 Sheets-Sheet 1.

E. W. WOLFE. MACHINE POR-BENDING socxnrr BLANKS FOR TUBES.

No. 267.634. Patented Nov. 14,1882.

gm -wm W Wrz w N. PETERS. Prmwuma n hur, W:shing1un-D.C.

( M del.) 2 Sheets-Sheet 2. I

Bnw. WOLFE. MACHINE FOR BENDING SOGKBT BLANKS FOR TUBES.

110.267.63 1. Patented No 'v. 14. 188121 I UNITED I STATES EDWARD W. WOLFE, OF READING, PENNSYLVAN[A,'ASSIGNOR TO) THE READING IRON WORKS, OF SAME PLACE.

MACHINE FOR BENDING SOCKET-BLANKS FOR TUBES.

SPECIFICATION forming part of Letters Patent No. 267,634, dated November 14, 1882,

Applicationfiled June 1-2, 1882. (Nomodeld To all whom it may concern:

Be it known that I, EDWARD W. WOLFE, a citizen of the United States, and-a resident of Reading, Pennsylvania, have invented certain Improvements in Machinery for Bending Socket-Blanks for Tubes, of which the following is a specification.

My invention consists of certain mechanism, fully described hereinafter, for bending scarfed bars so as to form socket-blanks, to be subse quently converted by welding and threading into sockets for connecting pipes together.

In the-accompanying drawings, Figure 1, Sheet 1, is a vertical section of the bendingmachine; Fig. 2, Sheet 2, a plan view of the machine without the clamping device, and showing part only of the main bevel-wheel; Fig. 3, a plan view of; the base of the machine and part of the annular track Fig. 4, Sheet 1, an end view of part of Fig. 1; Fig. 5, a diagram illustrating the operation of the machine, and Fig. 6 a view illustrating a modification of my invention.

The base A ofthe machine has a central projection, I), and on the latter an arbor, a, adapted to the hub of the bevel-wheel B, into which gears a bevel-pinion, D, on the driving-shaft E, which is adapted to bearing-blocksF F, se

cured to the base A, and which is provided witha suitable handle, 0. Into a square recess in the arbora is fitted the square lower end, f,- of the detachable mandrel G, which is secured to the central projection, b, of the base, in the present instance by a bolt, h. Avertical roller, H, is adapted to turn on a pin, 6, carried by a sliding bracket, K, which is adapted to guides jj, formed in the present instance on the bevelwheel B, the said bracket admitting of being moved radially from or toward the center of the wheel, to which the bracket is confined, preferablyin the manner shown in Fig. 4. The bracket audits roller H are under the control of a screw, M, the thread of which is adapted to that of a nut, N, confinedto a plate, P, which is secured to the wheel B.

An annular track, T, is secured to the base of the machine,and on this track bearsa roller,

' m, journaled to a hangenn, secured to the under side of the said wheel B.

The fixed mandrel G has a flange, q, which bears upon the arbor a and on; the hub of the wheel B, and is overlapped by the lower end of the roller H, the latter being as near as possible to the flange without being in close friction-a1 contact therewith. To lugsp p on this flange q of the mandrel is pivoted the cranked lever U, the upper portion or' handle, to, of which is provided with a device by which the lever can be locked to or released from the man drel, the device consisting in the present instance of a spring-bolt, t, and an arm, a, pivoted to the lever and passing through the bolt, so that by moving the arm toward the handle of the lever the bolt will be raised, and on releasing the arm the bolt will be forced downward into an orifice in the head of the bolt h.

A jaw-plate, y, is dovetailed at its upper and lower ends and adapted to dovetailed guides in the lever, so that while it is retained laterally on the lever it can be movedoutward therefrom by set-screws s s.

In using the machine the clamping-lever is first unlocked and moved back, so that the heated bar, which is of the required length and properly scarfed at the ends, can be introduced between thejaw y and the mandrel, when the latter is locked and the heated bar or plate held near one end, after which the sliding bracket K is moved toward the center of the machine by turning the screw M, and the roller H thereby forced hard against the bar, the relative positions of the roller, clamp, heated plate, and mandrel being those shown in the diagram, Fig. 5. The wheel, bracket, and roller are now turned in the direction of the arrow shown in that figure until the roller reaches the position indicated by dotted lines, when the heated bar will have been bent to the proper shape, ready for conversion by welding into the desired pipe-socket.

It will be noticed that thereis in theside of the mandrel, and extending through the top of the same, a recess, g, into which one jaw of a pair of tongs can be introduced, in order to permit the withdrawal by the said tongs of the bent bar or socket-blank from the mandrel, the clamping-lever 0 having been first unlocked and thrown backto permit this withdrawal.

It is not essential in carrying out my invention that the roller-bracket K and the device 'for moving the same should form part of a ranged toturn on the fixed arbor a, this arm carrying the adjustable bracket K and its roller, the outer end ofthe arm carryinga roller which bears on theannular track, and a bevel-Wheel being secured to the hub of the arm, so as to be driven by a similar wheel, E. The roller H, moreover, may be adapted to turn on a fixed spindle, and the mandrel G, with its clamping-lever, may be rotated by means of mechanism which will readily suggest itself to a skilled mechanic.

I claim as my invention- 1. The combination, in a machine for bending bars into socket-blanks, of an adjustable roller, H, a mandrel, G, a device for clamping the bar to the mandrel, and mechanism whereby theabove-inentioned elements are caused to cooperate, substantially as described.

2. The combination of the mandrel G with a clamping-lever, O, and a device whereby the said lever may be locked to or unlocked from the said mandrel,all substantially as specified.

3, The combination of the mandrel G, with the clamping-lever O pivoted to the said inandrel, and the adjustable plate 3 carried by the said lever, substantially as specified.

4. The combination of the mandrel G, a device for clamping a bar thereto, a wheel, B, or its equivalent, adapted to a fixed arbor, a, and carrying a roller, m,-adapted to an annular track, with a bracket, K, adapted to guides on the said wheel, and carrying a roller, H, all substantially as set forth.

In testimony whereofI have signed my name to this specification in the presenceof two subscribing Witnesses.

7 ED. W. WOLFE.

Witnesses:

HARRY DRURY, HARRY SMITH.