US448814A

US448814A - Apparatus for bending and forging steel

Info

Publication number: US448814A
Authority: US
Publication date: 1891-03-24
Anticipated expiration: 1908-03-24

Description

(No Model.)

s. FOX. Y APPARATUS FOR BENDING AND FORGING STEEL.

No. 448,814. Patented Mar. 24, 1891.

l f f `U www@ UNITED STATES PATENT OEEIcE.

SAMSON FOX, OF LEEDS, ENGLAND, ASSIGNOR TO THE FOX SOLID PRESSED STEEL COMPANY, OF CHICAGO, ILLINOIS.

APPARATUS FOR BENDING AND FORGING STEEL.

. SPECIFICATION forming part of Letters Patent No. 448,81 4, dated March 24, 189i.

Application filed December 4, 1890. Serial No. 873,595. (No model.)

To aU whom, it may concern:

Be it known that I, SAMSON FOX, of Leeds, England, have invented a new and useful Improvement in Apparatus for Bending' and Forging Steel, of which the following is a full, true, and exact description, reference being had to the accompanying drawings.

My invention has reference to machinery or apparatus for bending or forming the ends IO of channel iron or steel, T and angle iron, or steel, rbc., to any desired angle or curve, and may be used with advantage in the bending` or forming of the ends of bars necessary in the construction of under frames of rollingstock for railway and other vehicles Without the use of separate angle-pieces at the points of connection of one bar or member of the under frame with anotherand for strengthening the joint.

In the accompanying sheet of illustrative drawings, Figures I, 2, 3, 4, and 5 are views of apparatus designed for use in connection with a hydraulic press or other suitable pressing-machine for the purpose of bending the ends of channel iron or steel bars at one operation.

Fig. l is a sectional plan at a' m, Fig. 2. Fig. 2 is a part sectional elevation on line y y, Fig. l, showing the apparatus illustrated in Fig. l as it appears before the bending operation is commenced, subsequent positions of some ofthe parts being indicated in dotted lines. Fig. 3 is a cross-section at v o, Fig. 5, illustrating the positions the parts occupy after the bending operation has been completed. Fig. 4E is a plan of the traveling bender. Fig. 5 is a part sectional elevation on the line ,e e, Fig. l, showing the operation of completing the channel-beam.

a is a mandrel or block secured to the bottom plate of the hydraulic or other pressingmachine.

I) is a bar (inlhis case a channel-bar) under treatment; b', a metal strip adapted to hold the bar securely in position during th bending operation.

c is a traveling bender. It is in the form of a slab or block mounted on aloose carriage, the wheelsy d d of which are adapted to run in 5o curved recesses d d' in blocks e e, which are secured to the table of the pressing-machine.

fis a presser. It is attached by bolt and cotter g to a finishing die-block f.

7L 7i, are loose tapered pieces to enable the central part of the mandrel to be withdrawn after the operation is complete and to allow for the contraction of the metal.

The channel-bar l), Figs. l and 2, after being heated to the required temperature at the end to be operated upon, is placed upon the 6o mandrel a, the heated end of the said channelbar projecting beyond the end of the mandrel, as shown in dotted lines at b2, Fig. 2. The traveling bender-carriage c, Fig. 2, is then placed in the upper position shown in Fig. 2, and the finishing die-block f', being actuated by hydraulic or other means, causes the presser f to press upon the bender c, the wheels d of which travel in the curved recesses d. As the operation proceeds the bender c bends the 7o end of the channel-bar under treatment to an angle slightly less than a rightangle, the operation forcing a surplus quantity of metal to the corner, as indicated by dotted lines at .fr in Fig. 2, the parts c and f being` then in the positions indicated by dotted lines at c2f3 in Fig. 2. The parts ffare then raised, the cotter g and bolt are withdrawn, the presser f is removed, and the finishing die-block f is caused to move downward until that which is 8o now the top of the bender (Whose position is indicated by dotted lines at c2) enters the re- `cess y. In this way the bender is forced to assume the vertical position in which it is shown at c, Fig. 5, the face y of the block f at the same time pressing and distributing the surplus metal of the bent bar that is indicated in dotted lines at cc, and finishing the bend oft' to a right angle.

lVhat I claim as my invention, and desire 9o to secure by Letters Patent, is-

l. In an apparatus for bending the ends of channel iron or steel, the combination, with the pressing member and die, of an independent bender traveling in guides and operating to force down the end of the beam, substantially as described.

2. The combination, in an apparatus for bending the ends of channel iron or steel, of a mandrel, a traveling bender, alpresser, and roo a finishing die-block, substantially as described.

IE. The combination, in a machine l'or bend f ing channel iron or steel, ol' the stationary die for receiving' the channel iron or steel, a press operating` a traveling; bender for bending the end of the channel-beam, and a spread l ing wedge-die located within the beam for the purpose of insuring.r the rectangular shapeof the beam, substantially as described.

l. The Combination, in a pressing-machine, I of the die I), the bender c, and the presscrj, substantially as described.

5. 'lhe combination, in a pressirig-machine, of the die Z), the bender c, the removable presserf, and the finishing-die to which il is attached, substantially as described.

f3. The combination of the die I), presserf7 and the bender f, traveling` in curved guides,

substantially as shown and described.

7. The bender c, provided with Wheels traveling in curved guides, in combination with the presser and die, substantially as described.

S. rl`he process ol' forming closed channelbeams, which consists of preliminarily bending the end of the beam, thereby causing` the spreading of the metal at the sides and top ol the beam in position, and in, secondly, red ueing the en@L to a rectangular box shape by a separa-te die, substantially as described.

In testimony whereof I have signed my naine to this specification in the presence 0l two subscribing` Witnesses.

SAMSON FOX.

Witnesses:

S. O. IlDnoNDs, WM. A. PoLLocK.