US891838A - Head-block and tension-bar. - Google Patents

Description

' No. 891,838. PATENTED JUNE 30, 1908.

H. W. HOOK. I

HEAD BLOCK AND TENSION BAR. APPLIUATION FILED MARL22.1906.

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PATENTED JUNE 30, 1908.

HEAD BLOCK AND TENSION BAR.

APPLICATION TILED MAE.22.1906.

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ATTORNEYS ,WASHINGTON. n. c.

UNITED STATES PATENT OFFICE.

HENRY W. HOOK, OF YOUNGSTOWN, OHIO, ASSIGNOR TO YOUNGSTOWN SHEET AND TUBE COMPANY, OF YOUNGSTOWN, OHIO, A CORPORATION OF OHIO.

HEAD-BLOCK AND TENSION-BAR.

Specification of Letters Patent.

Patented June 30, 1908.

To all whom it may concern:

Be it known that I, HENRY W. HooK, a citizen of the United States, residing at Youngstown, in the county of Mahoning and State of Ohio, have invented or discovered new and useful Improvements in Head- Blocks and T ension-Bars, of which the following is a specification.

My invention relates to improvements in pipe welding apparatus, and particularly to head-blocks and tension-bars for use therewith.

My invention has for its object to provide devices whereby the skelp, as they are drawn from the furnace, are held from twisting or turning in such a manner as to permit or cause the edges to butt together without overlapping.

Referring to the drawings which form a part of this specification, Figure 1 is a side elevation of a draw-bench containing my invention, the furnace front beingshown in vertical section; Fig. 2, a plan of the same, the furnace front being in horizontal section; Fig. 3, aplan of my improved head-block and tension bar; Fig. 4, an end view looking at Fig. 3 from the bottom of the same; Fig. 5, an end view of Fig. 3, looking toward the bottom thereof; Fig. 6, a cross-section on the line VIVI of Fig. 2; Fig. 7, a plan of my invention with two head-blocks for use with two bells; Fig. 8, a plan of a second form of my head-block and tension-bar; and Fig. 9, an end elevation of Fig. 8, looking toward the top of the same.

On the drawings, 1 represents a drawbench having the slot 2 for the front sprocket wheel 3 and the groove 4 for the chain 5, run ning over the said wheel 3 and the rear sprocket wheel 6 which is in the slot 7.

My head-block and tension-bar are located at the front of the draw-bench 1, close to the front of the furnace 8. They have preferably the base 9 connecting them, the tensionbar 10 being in front of the head-block 11.

The head-block has two vertical posts or guide pieces 12 having on their opposing edges the vertical grooves 13 into which the tenons or edges of the bell-block 14 are removably fitted. The bell-block has an upwardly open bell-notch 15 to receive and hold the welding bell 15 during the welding operation.

The tension-bar contains two sections, a lower fixed aw or bar 16 and a top movable bell block 14 is jaw 01 bar 17, the lower jaw being removable from vertical slots in the ports or lugs 18 as the bell-blocks are removable from the headblocks. One of the parts 18 has an ear 19 to which the up er jaw 16 is pivoted by means of the sha't 20, which extends backwardly to a position opposite that at which the hook-runner usually stands prior to hooking the tongs 21 to the chain 5. The rear end of the shaft 20 is supported in the bearing 22 on the draw-bench and carries a bevelgear wheel 23, meshing with the bevel-gear wheel 24 on the vertical shaft 25, to which is secured the bevel-gear wheel 26 in mesh with the bevel gear wheel 27 on the crossshaft 28. The shaft 28 passes to the op osite side of the bench, where it is prov1 ed with the o erating handle 29. The opposing edges of t e jaws 16 and 17 are referably arc-shaped, as shown in Fig. 5, an the lower edge of the upper aw 17 is preferably beveled as shown and made adjustable by makin it in two parts, secured together by the bits 30 in the slots 31.

The operation is as follows: The hook-runner or other attendant works the handle 29 so asto open the jaw 17; the welder then passes the ton s over the jaw 16 and secures them to the srelp 32 in the usual manner.

As soon as the tongs pass the tension-bars, the hook-runner, as he travels with the hook, operates the handle in the opposite direction, oausinglthe top tension-bar or jaw 17 to fall upon t e skelp, which is held and guided in the curved slot between the two tension-bars or jaws, so that the skelp cannot turn or twist, causing its edges to butt together without overlapping. Before the tongs are hooked to the chain, the bell 15 is slipped over the reins of the tongs in the usual manner and placed so as to be caught by the slot 15 of the bell-block when the nose of the skelp engages the bell. If a bell of different size is required, the bell-block 14 may be ex- 1ghlalnged for one adapted to .the preferred Fig. 7 is like Fig. 3, except that a second rovided behind the bellblock 14 for use w en two bells are used.

In Figs. 8 and 9, the rolls 33 and 34 take the place of the jaws 16 and 17 of thefirst form of my invention. The upper jaw or bar 17 carries the concave roll 33 and the fixed jawcarries the convex roll 34, the two rolls being curved so that their opposing portions form the slot substantially like the slot between the jaws 16 and 17, when closed on the skelp. The operation is precisely the same as in the other forms of my invention, the form in Figs. 8 and 9 allowing the skelp to pass with less friction.

1 do not restrict myself to the precise details shown, as many changes may be made while still retaining the spirit of my invention.

, I claim- 1. In a draw-bench, a bell-block, a pair of jaws, located in front of the bell-block and having relative movement one towards and from the other, and means for opening and closing the aws, whereby the skelp may be introduced between the jaws and the jaws then readily closed on the skelp, for the purposes described.

. 2. In a drawbench, abell-block, upper and lower jaws in front of the bell-block, one j aw being movable toward and from the other, said aws having their 0p osing faces curved, and, when closed, para lel, and means for opening and closing the jaws.

, 3. In a draw-bench, a bell-block, a pair of jaws, located in front of the bell-block and having relative movement one towards and from the other, and means, at the rear of the bell-block, for opening and closing the jaws,

whereby the skelp may be introduced be tween the jaws and the jaws then readily closed on the skelp, for the purposes described.

4. In a draw-bench, a bell-block, a pair of jaws, located in front of the bell-block and having relative movement one towards and from the other, a shaft secured to the movable jaw for opening and closing the same, and a handle at the rear of the bell-block and operatively connected to said shaft, whereby the skelp may be introduced between the jaws and the jaws then readily closed on the skelp, for the purposes described.

5. In a device to control the presentation of skelp to a welding device, a pair of relatively movable jaws between which the skelp is introduced and clamped, and means for opening the jaws so that the welding tongs may be introduced between them, the skelp may be drawn by the tongs from the bell between the jaws, and the skelp clamped between the jaws after the tongs have passed said jaws.

Signed at Youngstown this 17th. day of March, 1906.

HENRY W; HOOK. Witnesses:

LEO GUTHMAN, WILLIAM ORTH.

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