Connect public, paid and private patent data with Google Patents Public Datasets

Pipe-bending machine

Download PDF

Info

Publication number
US1546147A
US1546147A US70894624A US1546147A US 1546147 A US1546147 A US 1546147A US 70894624 A US70894624 A US 70894624A US 1546147 A US1546147 A US 1546147A
Authority
US
Grant status
Grant
Patent type
Prior art keywords
bending
dog
disk
plate
pipe
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
Inventor
Frederick A C Skinner
Original Assignee
Frederick A C Skinner
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Grant date

Links

Images

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D11/00Bending not restricted to forms of material mentioned in only one of groups B21D5/00, B21D7/00, B21D9/00; Bending not provided for in groups B21D5/00 - B21D9/00; Twisting
    • B21D11/06Bending into helical or spiral form; Forming a succession of return bends, e.g. serpentine form
    • B21D11/07Making serpentine-shaped articles by bending essentially in one plane

Description

July 1-4, 1925.

- 1,546,147 F. A. c. SKINNER PIPE'BENDING MACHINE Filed April 25, 1924 s sheets-sheet 1' ww .Q n

m N m I July 14,1925.

F. A. c. SKINNER PIPE BENDING MACHINE 3 Sheets-Sheet 3 Filed April 25, 1924 Patented July 14, 1925.

TED

Er ENP Q' MMEIN m ms; we e as 12 4.- swal 2 45 To all whom it 000100702:

Be it known that I, FREDERICK A. C. Sni NnR, a citizen of the United States, residing at St. Louis, in the State of Missouri, have invented certain new anduseful Improvements in Pipe-Bending Machines, of which the following is a specification.

My in en has r t to mprovements pipe bending ma chines and consists in thenovel features of construction more fully set forth the specification and pointed outin the claims.

The object of the present invention is primarily to bend a length of pipe into coils of uniform length and having bends of a uniform radii, although itinay be effectively used for bending rods or'bars to any desired shape. further object is to provide a power driven bending machine which is au tomatic in its action except for feeding the machine which is manual. Furtlier and other ac lvantages will be better apparent from a detailed description of the invention in connection with the accompflny ng d wi g in w h Figure 1 'is atop plan of my improved di g m ne; i's- 2 is a nt elev tionthereof; 'Fig. 3' is an 'end elevetion' of the ma h n' F gs 4 i a n a ged top pl of he pipe'b n ing'me an sm a he end of the bending operationiFigj 5 is an enlarged top plan'of the bending mechanism in inoperative position, or idle, between bending operations; Fig. 6 is a combined side elevation end middleverticahcrosson hrough ear d b nd m hanism mounted thereon; Fig. 7'is a crosssectional detail taken on the line of Fig; 4; Fig. 8 is a side elevation of the pipe clamp hinged to the abutment member; Fig. 9 is abross-sectional'detail thereof taken on the line 9.9 of Fig. 8; and

Fig. 10 is a sectional detaii taken on the line 10-10 of Fig. 5.

Referring to the drawings, F represents a suitable struotural supporting frame cornp' s ne' p t 1, 1.. em, a ine lons dinal member 2,-and end members 3, 3 supp rte on 'se q P st nd n rme t 1 1,- gitudinal membe s 4:, e uppor e by h nd embers" Mo nt d 9?? me e s 1 described, it being unders stoi dthtt Pr m ch ne i made o b e 1 1mpr e tw bend n'g 1 2 1 mere y'te increase its 'efiiciency. A pinion 8 is' mounted' on 'a h having e ng a ac end ins. t 330.1% ng$ 0 s ure d qet' f d Said P n mes esv th' a bev lsear 1 kyed to a vertically disposed shift '12 mounted in a bearing 13 secured to one of t e e Sh f 12 ar ie apinibn on its i pper end said pinion meshing W t nd d in th sp ge ae :9 i r e b a m t rM ha n driv proc t 1 .co n e 0 a iri n sprb ket Q1 s a t y h in -71 2 s. misse t ea 7 W i is the PrQet m ted Y' ns element of the bending mechanism iseon stantly rotating hile motorM is running. h b din ile h n w th ear as t f u dati n ay i" b de r be "The spindle 5 over which gear rotates, terminates at its npper end in a redueed portion 18 over is placed an abutm n mem er he t e e fi y a nut 20 r wed ie atds l' 1 th nd 9f s id reduced p ifi ll b v e-ilv l9'b9i ighe d ageinstturning by. being bolted to en an 1e 22"seo'ured to"frar ne membjrs 4, '4. he, b men membe n r ded th s r cnlar side '23; and oppositely disposed shai h 3 de fau a 2 tangen al o ai circn a'r side, and a continuous groove 25 is formed in said sides'to receive. the pipe P i b 'l il i o e f y'eprear here? nae he r u par "(I li ers, 26 is conoentric with the rotation axis of'gealr 7 L Hinge'dly seeured to the abutment me n be .1918 e l l mrw se re y h ldi h Pi e i t t Par Qf ro v .6 form in ifi a'ig i d 2 of th abutment, q id cla'mp being described detail'belo'w; 'llhe, upper surface of gear "provided two ann'ular shoulders wand q, and the 285i the gear bounded shouldera is wh ne" m th" j lies" redid 29 formed in it, said slot opening into shoulder a, and being of slightly less depth than the combined height of shoulders a, a. A driving dog 30 is slidingly fitted into slot 29, and has a. recess 31 formed in its upper surface adjacent one side, and a stop screw 31 is screwed into the face 28 of the gear 7 on the edge of slot 29 so that the end of said screw will enter the recess 31 to limit the movement of the dog 30 in said slot. The dog 30 is shouldered at is near its free end and the nose 30 of said dog is urged out through the open end of the slot by a spring 32 positioned between the inner end of said dog and closed end of the slot 29. A'member 33having a. hub 34 at one end is slidingly mounted on the face 28 of gear 7, said hub being rotatably positioned over spindle 5 between gear 7 and abutment 19, and a pair of guides 35, 35, having their inner edges, 6, e, inclined outwardly, are.

securedto the upper face of member 33 adjacent to the sides thereof. A slide plate 36 is adapted to slide over the member 33 as a base, confined by the guides 35, 35,

said plate 36 having its edges 6, e inclined to cooperate with edges 6, e of the guides. The inner endof the slide plate 36 has a spindle 37 projecting upwardly from it on which is mounted a grooved roller 38, said roller being held on the spindle by a nut 39 screwed over the threaded terminal 40 of said spindle, and the outer end of said plate 36 has one corner cut out at right angles denoted by 00, the margins of said cut away portion intersecting the boundary of a. slightly more than semicircular recess The purpose of this formation will presently appear. The outer end of base plate 33 is provided with an opening 41 through which is passed a spindle 42 projecting from near one, end: of a lever 43, and a cam 44 is pinned to said spindle between base 33 and the marginal face of gear 7. The'relation of the parts is such that this places the cam 44 in close proximity to the nose 30 of dog 30 so that when the dog is expelled by spring 32 it will be in position to engage the cam 44 provided the high side of said cam is toward the dog. The function of the cam will be better apparent from what follows. The short armof lever 43 oper ated toward the center of gear 7 and its eX- tremity is shouldered as shown (Fig. 6)

to, receive the reducedend of a link 46, the

V opposite end 47 of said link being circular depending onwhether the lever is moved in shape and adapted to fit into recess y in plate 36. It should now be apparent that with an angular movement of lever 43 the link 46 will be drawn out or forced in,

from or toward dead. center with reference to, its spindle 42, and the slide 36. will like-.

1 wise be moved either out or in, and, further,

cam 44 will be rotated. It will now be apparent from Fig. 5 that the cut out corner as permits clearance for the swinging of link 46 when the lever 43 is oscillated to its angular position for withdrawing the roller 38 from abutment member 19.

It will be observed from Figs. 5, 6 and 7 that a lug a projects downwardly from, the bottom of base plate 33 at a point slightly inside of and beyond the pivotal point of link 46 with respect to the direction of rotation of gear 7, and this lug n is directly in the path of travel of dog 30 whensaid dog is in its outermost position in slot 29. However, should cam 44 be turnedto'the position shown in Fig. 5 thenose 30 of said dog will impinge on said cam which forces ber 19, the clamp 27 is provided, said clamp comprising a block 50 hinged at 49' to clamp 19, and a clamp member 51 pivotally connected at 52 toone end of said block. ;A pin'53 is rotatablymounted in the block near the other end, said pin carrying a lever 54 at one end and an eccentric 55 .at the. other end, said eccentric being rotatable in a slot 56 in the clamp member. After the pipe has been placed in groove 26 of the abutment member, the block 50 is swung downwardly (dotted Fig. 9) so that toothed groove 57 in the member 51 embraces the pipe after which the lever 54 is pulled down to cause the clamp member to come tightly T is provided between the gears 7 and eX- tending to one side of them, said table being in the same'plane with the bottom ofabutment 19. In order that the point at which the pipe is to be bent canbe quickly determined. a series of holes 60 are placed in the table T and a gauge piu 61 inserted in that one which islspaced correctly from the abut-i ment member to give the proper length coil whenthe pipe is bent. This will be better apparent from an inspection of Fig. 1.

In. the operation of the machine, uief power of motor M is transmitted, through the gearing heretofore described, to each of the gears 7 so that they will be Continuously rotating in opposite directions while the machine is in use. An operator is positioned alongside each gear 7 to perform such functions as are manual. We will assume that the bending ineihanisnr comprising slide 36, roller 38 and associated parts are in the position shown on the right hand side Fig. 1, which is the starting position for the bending operation. It will be noted (Fig. 5) that the lever 43 is in a position substantially at right angles to slide 36, side slide and roller 38 having been withdrawn by the link connection 46 with said lever, away from the abutment member 19. For this position of the lever 43 the cam 44 is turned as shown in Fig. 5 and its radial face 45'is out of the path of driving dog 30 the nose 30 of which is cammed by the outer periphery of cam 44 so that the dog 30 slips past the lug n. Thus the gear 7 may rotate idly when the lever 43 is inthe position just pointed out.

The operator now positions the pipe P that is to be bent, in groove 26 of the abutment member 19, and secures it therein by the clamp 27. The bending mechanism is now brought into play by manually swinging lever 43 to its position shown in Fig. 9, almost in line with slide 36. This movement of the lever straightens the toggle comprised of said lever and link 46 which forces the slide 36 and roller 38 inwardly toward abutment member 19, the groove of said roller embracing the pipe P. At the same time the cam 45 is rotated so that its face 44 comes opposite to the revolving driving dog 30 which impinges on the lug n and against cam face 45 thus driving plate 33, with the parts mounted on it, around in front of it, and rotating the entire bending mechanism. At the same time the pressure of the dog 30 against cam face 45 looks the toggle comprised of lever 43 and link 46. The rotation of roller 38 around abutment 19 obviously bends the pipe between the roller and abutment. When the pipe has been bent to a semicircle the lever 43 is tripped by the trip arm 58, secured to the side of the table opposite to that on which the bending operation began, said lever being swung to the position shown dotted in Fig. 4 and the toggle broken, thus with drawing slide 36 and roller 38 and rotating the cam 44 so that cam face 45' forces the dog 30 back in its slot and releases the lug n so that rotation of the bending mechanism is arrested. The gear 7 of course, with its driving dog 30 now rotates idly. The bending mechanism is now manually rotated back to the starting position shown in Fig. 5 and the lever 43 slipped behind the spring latch 59. Thebending operation may now be repeatedm- Having described my invention, I claim:

1.. Av pipe bending machine comprising-a suitable'frame, a diskrotatably mounted on saidv frame, a fixed abutment member centered over the rotation axis of said disk, a bending element rotatable about the axis of the disk and movable radially with respect to said axis, means for coupling the bending element to the disk and simultaneously moving same toward the rotation axis of' said disk, and means for uncoupling said bending element and disk and simultaneously withdrawing the bending element.

2. A pipe bending machine comprising a frame, a disk rotatably mounted thereon, a fixed abutment member centered over the rotation axis of said disk, a bending element loosely mounted on said disk and movable radially with respect to the axis thereof, a driving dog carried by said disk, a lug on the bending element adapted to be engaged by said dog for rotating'the bending element, and means for releasing said dog from the lug and simultaneouslytherewith mo"- ing the bending element outwardly from the rotation axis of the disk.

3. A pipe bending machine comprising a frame, a disk rotatably mounted thereon, means for rotating said disk, a fixed abutment centered over the rotation axis of said disk, a plate loosely mounted over said disk, a bending element mounted on said plate and slidable radially with respect to the rotation axis of the disk, a driving dog carried by said disk, a lug on the plate adapted to be engaged by said dog for rotating said plate, and means for releasing said dog from the lug and simultaneously therewith. sliding the bending element outwardly on the aforesaid plate.

4. A pipe bending machine comprising a frame, a disk rotatably mounted thereon, means for rotating said disk, a fixed abutment centered over the rotation axis of said disk, a plate loosely mounted over said disk, a bending element mounted on said plate and slidable radially with respect to the rotation axis of the disk, a lever mounted on said plate and having a toggle connection with said bending element, a cam connected to said lever at the pivotal point thereof, a driving dog slidably mounted on said disk, a lug on said plate adapted to be engaged by the dog for rotating said plate and bending element, said cam being adapted to engage the dog to release same from said lug on swinging the aforesaid lever to a position for withdrawing the bending element from the rotation axis of the aforesaid disk.

5. A pipe bending machine comprising a frame, a disk rotatably mounted thereon, means for rotating said disk, :1 fixed abutment-c-entered over the rotation axis of said disk, a plate loosely mounted over said disk, a bending element mounted on said plate and slidable radially with respect to the rotation axis of the disk, a driving dog carried by said disk a lug on the plate adapted to be engaged by said dog for rotating said plate, means for withdrawing the bending element from the abutment mem:

ber, and a cam for releasing said dog simultaneously with a Withdrawal of the bending element.

In testimony whereof I hereunto aflix my signature.

FREDERICK A. o. SKINNER.

US1546147A 1924-04-25 1924-04-25 Pipe-bending machine Expired - Lifetime US1546147A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US1546147A US1546147A (en) 1924-04-25 1924-04-25 Pipe-bending machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US1546147A US1546147A (en) 1924-04-25 1924-04-25 Pipe-bending machine

Publications (1)

Publication Number Publication Date
US1546147A true US1546147A (en) 1925-07-14

Family

ID=24847810

Family Applications (1)

Application Number Title Priority Date Filing Date
US1546147A Expired - Lifetime US1546147A (en) 1924-04-25 1924-04-25 Pipe-bending machine

Country Status (1)

Country Link
US (1) US1546147A (en)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2452050A (en) * 1946-06-28 1948-10-26 Mccord Corp Combined machine for feeding, bending, and flattening tubing
US2453868A (en) * 1947-02-20 1948-11-16 Pedrick Tool & Machine Company Apparatus for automatically bending work such as tubing into serpentine coils
US2454290A (en) * 1946-08-01 1948-11-23 Bundy Tubing Co Apparatus for bending work such as tubing into serpentine coils
US2469405A (en) * 1947-05-14 1949-05-10 Bundy Tubing Co Apparatus for bending tubing into serpentine coils and sweep mechanism and stop therefor
US2469406A (en) * 1947-05-15 1949-05-10 Bundy Tubing Co Apparatus for bending tubing into serpentine coils and sweep mechanism and index therefor
US2488896A (en) * 1946-06-14 1949-11-22 Charles J Bertolini Dual pivoted bender for simultaneously bending two parallel lengths of metal tubing
US2814327A (en) * 1955-02-21 1957-11-26 Reynolds Metals Co Serpentine tube bending machine with axially shiftable upper and lower clamping and bending die sections
US3657911A (en) * 1970-03-13 1972-04-25 Foster Wheeler Corp Bending machine
US3795128A (en) * 1970-12-23 1974-03-05 R Benton Bending
US4702097A (en) * 1983-04-06 1987-10-27 Helmut Zahlaus Process for the bending of rod-like materials
US20030084570A1 (en) * 2001-11-02 2003-05-08 Beaver Danny D. Forming serpentine heat exchangers from spine fin tubing
US7024905B1 (en) * 2003-04-28 2006-04-11 Aaron Carlson Portable electrical conduit pipe bending system
US20070017271A1 (en) * 2002-06-05 2007-01-25 Antonios Anagnostopoulos Machine and method for parallel production of similar products, through straightening and bending of wires, wire rods, metal tubes or other material of prismatic cross section
JP2011235329A (en) * 2010-05-12 2011-11-24 Kyadakku:Kk Apparatus for bending reinforcing bar

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2488896A (en) * 1946-06-14 1949-11-22 Charles J Bertolini Dual pivoted bender for simultaneously bending two parallel lengths of metal tubing
US2452050A (en) * 1946-06-28 1948-10-26 Mccord Corp Combined machine for feeding, bending, and flattening tubing
US2454290A (en) * 1946-08-01 1948-11-23 Bundy Tubing Co Apparatus for bending work such as tubing into serpentine coils
US2453868A (en) * 1947-02-20 1948-11-16 Pedrick Tool & Machine Company Apparatus for automatically bending work such as tubing into serpentine coils
US2469405A (en) * 1947-05-14 1949-05-10 Bundy Tubing Co Apparatus for bending tubing into serpentine coils and sweep mechanism and stop therefor
US2469406A (en) * 1947-05-15 1949-05-10 Bundy Tubing Co Apparatus for bending tubing into serpentine coils and sweep mechanism and index therefor
US2814327A (en) * 1955-02-21 1957-11-26 Reynolds Metals Co Serpentine tube bending machine with axially shiftable upper and lower clamping and bending die sections
US3657911A (en) * 1970-03-13 1972-04-25 Foster Wheeler Corp Bending machine
US3795128A (en) * 1970-12-23 1974-03-05 R Benton Bending
US4702097A (en) * 1983-04-06 1987-10-27 Helmut Zahlaus Process for the bending of rod-like materials
US20030084570A1 (en) * 2001-11-02 2003-05-08 Beaver Danny D. Forming serpentine heat exchangers from spine fin tubing
US6715202B2 (en) * 2001-11-02 2004-04-06 American Standard International Inc. Tube bender for forming serpentine heat exchangers from spine fin tubing
US20040158985A1 (en) * 2001-11-02 2004-08-19 Beaver Danny D. Forming serpentine heat exchangers from spine fin tubing
US20070017271A1 (en) * 2002-06-05 2007-01-25 Antonios Anagnostopoulos Machine and method for parallel production of similar products, through straightening and bending of wires, wire rods, metal tubes or other material of prismatic cross section
US7497105B2 (en) * 2002-06-05 2009-03-03 Antonios Anagnostopoulos Machine and method for parallel production of similar products, through straightening and bending of wires, wire rods, metal tubes or other material of prismatic cross section
US7024905B1 (en) * 2003-04-28 2006-04-11 Aaron Carlson Portable electrical conduit pipe bending system
JP2011235329A (en) * 2010-05-12 2011-11-24 Kyadakku:Kk Apparatus for bending reinforcing bar

Similar Documents

Publication Publication Date Title
US4802278A (en) Gear driven tube cutter
US3909900A (en) Apparatus for producing electrical conductors
US2285167A (en) Wire stripper
US1676775A (en) Plumber's tool
US2718376A (en) Cable puller
US2298492A (en) Automatic controlling apparatus for strip feeding mechanism
US2312225A (en) Machine for treating the edges of casings
US2179011A (en) Hot strip coiling machine
US2464800A (en) Portable tube bending tool
US3336779A (en) Portable tube bender
US6134932A (en) Machine for bending or cambering a profile section, and bending head therefor
US2305624A (en) Power driven pipe tongs
US3447353A (en) Tube and rod bender
US3211187A (en) Wire tying machine
US1079442A (en) Pipe-bending machine.
US3197990A (en) Metal forming device
US3076491A (en) Wire forming machine
US2219811A (en) Rod straightening and handling mechanism for headers
US1429328A (en) Tubing machine
US3214955A (en) Sheet metal bender
US3417590A (en) Conduit bending apparatus
US2242135A (en) Pipe bending device
US3994152A (en) Machine for bending cleat edges
US2345102A (en) Pipe bending tool
US2393702A (en) Straightening apparatus for strip material