US2598190A - Drawbench - Google Patents

Drawbench Download PDF

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Publication number
US2598190A
US2598190A US642823A US64282346A US2598190A US 2598190 A US2598190 A US 2598190A US 642823 A US642823 A US 642823A US 64282346 A US64282346 A US 64282346A US 2598190 A US2598190 A US 2598190A
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United States
Prior art keywords
opposed
chains
blocks
die
gripping
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Expired - Lifetime
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US642823A
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John W Offutt
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United States Steel Corp
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United States Steel Corp
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Priority to US642823A priority Critical patent/US2598190A/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21CMANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C19/00Devices for straightening wire or like work combined with or specially adapted for use in connection with drawing or winding machines or apparatus

Description

y 27, 1952 J. w. OFFUTT 2,598,190

DRAWBENCH Filed Jan. 23, 1946 2 SHEETS- SHEE'I l INVENTORI JOHN W 0FFU7 Hi5 ATTORNEY Patented May 27, 1952 John aunt. Ellw cs,

E es eno ts N w las r" Maste classes! t jii i 64 .43 3

" a s s (01. 205-4.).

This. invention relates to. draw-benches for re.- ducing. the. diameter or tubes, bars and the like. and more particularly. to. improved means for pushing tubes, bars and the likethrough forming mean such as reducing dies. f

'In the cold drawing t tubes: and bars, it has been conventional practice. to point or. reduce one. end of: such articles so. such end could beex: tended through the reducing die. and then-gripped byJjaw. members. mounted on a movable carriage which pulled. such. articles through. the reducing die. The. pointing of; the ends ofthe articlesv is.

costly-and in; addition the pointed. and must sub: seouently be. scrapped; It has heretofore. been. proposed'to. push such articles. through the dies. butthejmechanism.hasbeentoo cumbersomeand; so, lacking; in flexibility. of; adjustment to. accommodatelvarious. sizes as to, render the; same; come. men al-1's! un conomical;

t-isa rdin ly an. objector the. pr se t inventiontonrovide-a. dev ce tor s e w d -varie of elongated articles through a reducing die and simultaneously support them to prevent bending or buckling thereof.

It is another object to. provide a device for pushing elongated articles 'throug'h'a. reducing die and for simultaneously supporting the same" which is simplein design and rugged-and durable inoperation.

The ,foregoing, and. iurther. obj ects will: become apparent. from. the. following. description. when read m-conjunctionwiththe. accompanying draw n suherein:

Fi ure. 1 isa side elevation;

Eigure 2;, is. an. enlarged elevation, partly. in section of the forward end of Figure 1;

Figure 3 is a vertical section on line IIIIII of Figure 2; and

Figure 4 is a partial elevation of a modification.

Referring more particularly to the drawings, the numeral 2 designates an elongated article such as a thin-walled pipe, part of which has been reduced in diameter by being pushed through a die 4 by endless chains 5 revolving around sprockets 8 and idlers Ill.

The chains 6 are composed of inner connecting links l2 and outer links H mounted on pins I6. Disposed between the inner links l2 and outer links l4 are rollers l8 likewise carried on the pins IS. The outer links 14 are somewhat triangular in shape and have special gripping blocks mounted therebetween. The gripping blocks 20 have a plurality of aligned V-shaped grooves 22 or varying sizes to permit gripping various sizes oftubing.

EQ Z Qd ub n he weent e. canton ine; or the The tens on or. inner. legs of; the. chains; backed up. bytl .c 52 2.6; which supportthechains; by. reason Q1}'cbntacil;OfiiIZOllBKS; lfiwith 'rollerwaysi z-e. The'tracksn are. support d at; inte miss on ddles. 31!], which. are. connected by; cqlumns; one end of; which. is. adiustable bvxsl-e re to regulate the distance between theatres and. th reby. r ulat the... space. betwe. chains, The lower. track '26- is monnte. hannel sup ort. 3.5: with. a. flexiblelnressure .hose. 38. betwee the-supportive and thetrack. Q6; Th pressure exerted by. the. grip131.11g-bloek cone tr lled by th hos an in; which. the. desired; liq -t uid or air pressure is maintained.

The force necessary to push the tube nth-rou h the. d e 4.. sy upplied by the. frictional. effect. on the ube in he. veshaped; grooves 01% the. rinnin the 20; The. extent or this. force windenend n t amount. o th fluid nressurelinlthehosel and. the length. of: chain in. cont ct with. the tube.

opera on, Que. ubewflr follilllk anothermth; theyends. p eierably: abuttin so that. the lengt of? chainrtubecontactwill; e end; on he distance etwee thesnrqc setsfl ani lidl rs. t0:- Whentha whaleripped e we nthe .shaped; roonesto r t e. locks su por ed: very dire tion in. aplanesp rpend cu-le fio. tsaxisand cannotbends or.=buc k e-u de the. .x al compressive.tome-Jere. ingsit h ou hheme. l a gn thtfl 0- sun.

il-settles en h. 4.0; p en ushto a..- it; lfgdesirsdl, ush; prevent buckling by giving additional support can be installed in this space.

The die 4 is supported in a holder 42 which may be adjustable to bring the die in line with the aligned row of V-grooves being used or may have three openings 44 therein for positioning the die in line with such row of blocks.

In Figure 4, I have shown a modified form of apparatus wherein certain of the triangularshaped outer links I4 are replaced at certain intervals with straight links 46, so that the opposed gripping blocks are omitted at such places. This permits a pusher block 48 to be inserted in such space whichblock is pushed forwardly by contact with the next succeeding opposed pair of gripping blocks. The pusher block 48 can be dropped in this space behind the tube at the rear end of the chains and will drop out of the slot when it passes the center line of the sprockets 8, due to the chain and V-blocks changing from formed if sufiicient gripping pressure is applied to achieve the pushing force.

3. When the last tube of a run is being reduced, it loses the frictional grip as its rear end approaches the die, so a follower tube witha diameter slightly less than the die openin must be used to clear the last tube from the die. Since the follower tube is smaller, it will not be gripped very strongly by the gripper blocks and the follower block can be used to push it along.

Such manner of die reducing elongated articles overcomes the present necessity of pointing and thereby eliminates 'suchexpense and the loss due to scrapping such ends. Moreover, this greatly increases production per machine and man hour. since the operation is continuous as contrasted to the intermittent operation of conventional draw-benches.

While I have shown and described one specific embodiment of my invention, it will be understood that this embodiment is merely for the purpose of illustration and description and that various other forms may be devised within the scope of my invention, asdefined in the appended claims.

I claim:

1. Apparatus for pushing an elongated article through forming means by frictional gripping means and by a pusher block carried thereby and simultaneously supporting the article throughout the length of the unformed portion comprising a pair of endless chains having parallel opposed leg portions, opposed gripping blocks carried by said chains, each of said blocks having a plurality of aligned V-shaped grooves, certain of said opposed blocks being spaced apart to permit the insertion of a pusher block adapted to be pushed forwardly by the opposed blocks directly therebehind, a pusher block between at least one of said opposed pairs of spaced apart blocks, said block extending across the space between said chains and being in-contact with both the upper and lower opposed gripping blocks directly therebehind longitudinally extending supporting means for the opposed leg portions of said chains and fluid pressure means behind at 4 least one of said supporting means for exerting a predetermined pressure on an elongated article disposed between said chains.

2. Apparatus for pushing an elongated article through forming means by frictional gripping means and by a pusher block carried thereby and simultaneously supporting the article throughout the length of the unformed portion comprising a pair of endless chains having parallel opposed leg portions, opposed gripping blocks carried by said chains, certain of said opposed blocks being spaced apart to permit the insertion of a pusher block adapted to be pushed forwardly by the opposed blocks directly therebehind, a pusher block between at least one of said opposed pairs of spaced apart blocks, said block extending across the space between said chains and being in contact with both the upper and lower opposed gripping blocks directly therebehind longitudinally extending supporting means for the opposed leg portions of said chains and fluid pressure means behind at least one ofsaid supporting means for exerting a predetermined pressure on an elongated article disposedbetweensaid chains. Y

3. Apparatus for pushing an elongated article through forming means by frictional gripping means and by apusher block inserted therein and simultaneously supporting the article throughout the length of the unformed portion comprising a pair of endless chains having parallel opposed leg portions, and opposed gripping blocks carried by said chains, certain of said blocks being spaced apart to permit the insertion of a pusher block adapted to be pushedforwardly by the opposed blocks directly therebehind, a pusher block between at least one of said opposed pairs of spaced 'apartblocks, said block extending across the space between'said chains and being in contact with both the upper and lower opposed gripping blocks directly therebehind.

JOHN W. OFFUTT.

REFERENCES CITED The following references are of record in the file of this patent:

' UNITED STATES PATENTS Number Date a Westin May 1, 1945

US642823A 1946-01-23 1946-01-23 Drawbench Expired - Lifetime US2598190A (en)

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Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2726756A (en) * 1952-02-01 1955-12-13 Wallace E Kerr Steady guide for a push-pointer
US3068920A (en) * 1959-06-01 1962-12-18 Ruth L Chandler Continuous variable pressure press
US3170567A (en) * 1961-07-11 1965-02-23 Capgras Rene System for applying draft force to an elongated object
DE1235244B (en) * 1965-03-27 1967-03-02 Adolf Irmer Device for the continuous production of a pipe, in particular a large pipe
US3480159A (en) * 1966-11-22 1969-11-25 Automation Development Corp Bar and tube feeder for automatic machines
US3861304A (en) * 1971-11-17 1975-01-21 Bernstein Daniel A Pressure actuator
USRE28795E (en) * 1971-11-17 1976-05-04 Western Electric Company, Inc. Apparatus and method for continuous extrusion
US4064987A (en) * 1976-02-12 1977-12-27 Rowan Daniel J Conveyor system for handling non-rigid containers
US4079551A (en) * 1976-03-23 1978-03-21 Bando Kiko Co., Ltd. Glass plate edge beveling machine
US4202264A (en) * 1979-02-05 1980-05-13 Hausman John M Structure for hydraulic power apparatus
US4413722A (en) * 1981-08-19 1983-11-08 Donald Frisbie Article orientation device
US4518550A (en) * 1983-05-16 1985-05-21 Makrotalo Oy Method of manufacturing rigid frame building elements filled with hard foam plastic
WO1993007999A1 (en) * 1991-10-16 1993-04-29 Universal Frozen Foods, Inc. Cutting apparatus
US5331874A (en) * 1991-10-16 1994-07-26 Universal Frozen Foods, Inc Cutting apparatus
US20180328518A1 (en) * 2017-05-09 2018-11-15 Broussard Brothers Inc. Push Rack Pipe Pusher for Floating Pipeline Installations

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US518403A (en) * 1894-04-17 Machine for straightening rods
US1669272A (en) * 1922-03-27 1928-05-08 Luce Cane Harvester Corp Conveyer-chain guide for sugar-cane harvesters
US1759105A (en) * 1928-09-07 1930-05-20 Charles S Knight Die for laying wire rope and wire-rope strands
US1779479A (en) * 1929-02-19 1930-10-28 Union Drawn Steel Company Machine for working metal rods, bars, and the like
US2142932A (en) * 1935-03-11 1939-01-03 Beard Veneer Products Inc Plywood press
US2374794A (en) * 1942-10-30 1945-05-01 Smith Corp A O Method and apparatus for electrically forming pipe

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US518403A (en) * 1894-04-17 Machine for straightening rods
US1669272A (en) * 1922-03-27 1928-05-08 Luce Cane Harvester Corp Conveyer-chain guide for sugar-cane harvesters
US1759105A (en) * 1928-09-07 1930-05-20 Charles S Knight Die for laying wire rope and wire-rope strands
US1779479A (en) * 1929-02-19 1930-10-28 Union Drawn Steel Company Machine for working metal rods, bars, and the like
US2142932A (en) * 1935-03-11 1939-01-03 Beard Veneer Products Inc Plywood press
US2374794A (en) * 1942-10-30 1945-05-01 Smith Corp A O Method and apparatus for electrically forming pipe

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2726756A (en) * 1952-02-01 1955-12-13 Wallace E Kerr Steady guide for a push-pointer
US3068920A (en) * 1959-06-01 1962-12-18 Ruth L Chandler Continuous variable pressure press
US3170567A (en) * 1961-07-11 1965-02-23 Capgras Rene System for applying draft force to an elongated object
DE1235244B (en) * 1965-03-27 1967-03-02 Adolf Irmer Device for the continuous production of a pipe, in particular a large pipe
US3480159A (en) * 1966-11-22 1969-11-25 Automation Development Corp Bar and tube feeder for automatic machines
US3861304A (en) * 1971-11-17 1975-01-21 Bernstein Daniel A Pressure actuator
USRE28795E (en) * 1971-11-17 1976-05-04 Western Electric Company, Inc. Apparatus and method for continuous extrusion
US4064987A (en) * 1976-02-12 1977-12-27 Rowan Daniel J Conveyor system for handling non-rigid containers
US4079551A (en) * 1976-03-23 1978-03-21 Bando Kiko Co., Ltd. Glass plate edge beveling machine
US4202264A (en) * 1979-02-05 1980-05-13 Hausman John M Structure for hydraulic power apparatus
US4413722A (en) * 1981-08-19 1983-11-08 Donald Frisbie Article orientation device
US4518550A (en) * 1983-05-16 1985-05-21 Makrotalo Oy Method of manufacturing rigid frame building elements filled with hard foam plastic
WO1993007999A1 (en) * 1991-10-16 1993-04-29 Universal Frozen Foods, Inc. Cutting apparatus
US5331874A (en) * 1991-10-16 1994-07-26 Universal Frozen Foods, Inc Cutting apparatus
US20180328518A1 (en) * 2017-05-09 2018-11-15 Broussard Brothers Inc. Push Rack Pipe Pusher for Floating Pipeline Installations
US10473237B2 (en) * 2017-05-09 2019-11-12 Broussard Brothers Inc. Push rack pipe pusher for floating pipeline installations

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