US2604924A

US2604924A - Pipe bending and layout table

Info

Publication number: US2604924A
Application number: US162966A
Authority: US
Inventors: Blake Jack Leroy; Cochran John
Original assignee: Individual
Current assignee: Individual
Priority date: 1950-05-19
Filing date: 1950-05-19
Publication date: 1952-07-29
Anticipated expiration: 1969-07-29

Description

y 1952 J. 1.. BLAKE ET AL 2,604,924

PIPE BENDING AND LAYOUT TABLE Filed May 19, 1950 4 Sheets-Sheet 1 FI tlt o I I I I N INVENTORQ c/ozz Cockran, Jag/ L. [0%9,

ATI'D R N EYB July 2 1952 J. L. BLAKE ET AL PIPE BENDING AND LAYOUT TABLE 4 Sheets-Sheet 2 Filed May 19, 1950 INVENTOR. /0512 60 alra 2,

A'ITD RN EYS y 29, 1952 J. BLAKE ET AL 2,604,924

PIPE BENDING AND LAYOUT TABLE Filed May 19, 1950 4 Sheets-Sheet 5 INVENTOR. s! (/0254 600% ram,

ATTDRN EYS July 29, 1 J. BLAKE ET AL 2,604,924

PIPE BENDING AND LAYOUT TABLE Filed May 19, 1950 4 Sheets-Sheet 4 IN VEN TOR. (b /2 C 0 6 57'0/2,

Jao/ Z EZae;

ATTD R N EYE Patented July 29, 1952 L H 2,604,924 a PIPEBENDIXG AND LAYOUT TABLE 'Jack fieroy Blake and john Coch c Houston, Tex,

Application May-l9, 1950,- Ser ial No. 162,'96'6 to a desired i'curvature or configuration.

Another object of the invention is toprovicle apipe rbencling table which can be readily ad J'usted so as to insure proper alignmentof the pipe and bending mechanism, the table including" a graduated chart that enables the use'rto bend pipeto any. exact angle by visual observation, as desired. A i

Still-another. object of the invention is to pro"-' vide 'a; table which has-a pipe-bending meehay nism movably mounted .ther'eonysothat the user canbend pipe to a desired angle by simplyand quickly. moving the 'pip -bending" mechanism" and without the necessity of'mo'vingthe pipe each timeit is't'o be bent. 1 1. Other objects and advantages of the invention willibe apparent during the course of; the follow-' ing description. f In the accompanying drawings fo-rming apart of this application, andin which like numerals areusedthroughout the same to designate like partsf f v" Figure I is a-tp'p1an view of the pipe-bending tableisho'w'ijg asection o'f pipe positioned thereon and'in brokenlines;

Figure'la'iis afragmentary top planvie'w o f the pipe-bending table, showing the leaf or shelf raised -to an operable position; f

Figure '2 is an enlarged top plan view of the layout char-t; Y Y

Figure 3 is an end elevational View of one-ofthe' leve'lingmembers'andpipe-holding Vises; I h Figure 4 a vertical sectional-view taken through themember shown in Figure '3; -1Figu1e5 is a sectional View taken on the line 5"5 0f Figure 4; g Figure o is a sectional View taken on the line 6-6 of Figure 4; 7 h V Figure"? is a 'sideeleyational view of the auxiliary leveling-unit; I Figure 8i-i s a fragmentary side elevational' view of the pipe-bending table of the'prese'nt invention showing the braces and adjustable leg construcion; r i 1 Figure 9 is a bottom plan view of the movable mountfor the conventional pipe-bending ma-I chine usedon' the pipe-bending table of thepresw entinven'tion; Figure 10:1 sectional view taken'on' the line W- efll'of Figure a "eolaim s. (c1. 153+38),

portion'3l that Provided "for rleaStbly maintain x-Referring in detail "to the drawings,"the numeral 20 designates a tablewhichiinoludes athorizontally disposed top ioripl'atforrr'lii'l Tthatis supported by a plurality of vertically "disposed, spaced parallel'legs' 221 A threaded -sh'a'ft'24 operatively "connects a ground-engaging support member 23 to the lowei' encl of each of the legs .2,=Figure 8, so that by'prop'erly "adjusting the support members 23the user can align :o'r'level the :table 20. iSuitable horizontally disposed braces :25 extend' between 'az'ijacent legs '22 and are'secured thereto, therebein'g inclined' bra'ces 26 extending between the-tabl'etop i l a'nd' bra'ces 25, and the braces 25 and 26 :help "to steady or maintain-the legs-intheirpr'op'er spaxie'drelation. Projecting from one side of the iplatform'zr is an extension' 'zil Figures 1 and l a; and hing'edly connected tothe-freelongitudinal edge' o f the extension! 1 by hingeslfi is a'shel'ff'or dropieaf za'; When the drop'leaf '28 is nee'ded orfbeing'used, it can be swung' or raised fro'mflhe position shown in Figure 1 tothe'position shown in Fi'g ure 1a; and. any conve'rition'allocking" eans' can; be I the'drb'Ii-kaf assigns-hor zonta positions" I Arranged'contiguous to the upper surface of the 'platfohn Zfl is a" calibrated layout chartio which enables j the I user-to accurately ascertain the exact angle or curvature of the pipe being bent; The lay0utchart '30 ineludesa rectangular is secured to the platform 21' by suitable securing elements, such as; screws 32, Figure- 1; and a second 'portion-fl ofthel'ayout chart 39 is secured to-the' uppersur'face of the drop leaf 28, Figure 10 "me portions '33 and 31 of the layout chart 30 can be used independently or together, depending upon -whioh way the pipe P'is beingbe'nt; A- portion of thelayout chart 3 0 is shownindetail in FigureQQand'it will beseenthat: the chart at is p evidee with-apluralityfof 'anged graduation'sj orjindicia'thereon. TIhus, arr

ollthe layout chart au al-e angle m i s v311 which can be used to visually-determine the, angle to -which the pipe 'is'b'e'ing' bent; rheseangm dications 34 include the] numerals 0 :15; "and other numerals up 'through'a 9 0 anglef Thelayi out chart 30 further includes;ihdiciaoi' markin' S 35 that serve to ir l dioateth'lehgth of the pipe in one directionfand arranged at right angles with respect to the markings .35'is asimilar row or set of markings 36 which'wcan also 'beflusedt ascertain the length of pipe'b'eing' bent. 3 I

Previ s injg'pipe' to use the pipe'tob'e bent was moved each time a new it .has been thefpra'ctice in bend- 1 r v or employ a pipe-b'ending'rneehe anis m that, may, be hydraulically actuatedfiand configuration was to be applied to the pipe. However, by means of the method and apparatus of the present invention, the section of pipe, such as the pipe P, is maintained immobile or stationary while a pipe-bending mechanism is moved along the section of pipe so as to shape or bend the pipe P to the desired configuration, as later described in this application. To accomplish this, apipe-bending mechanism 31, Figure 1, is movably mounted on the platform 2!. The pipe-bending mechanism 31 includes a horizontally disposed plate or mount 4| which has a plurality of sockets 38 secured to its under surface, Figure 10, by suitable securing elements, such as screws or bolts 39 The sockets 38 each rotatably carry a ball or ball bearing 40, and the plurality of ball bearings 40 engage the upper surface of the platform 2| so as to provide that the pipe-*bending mechanism 31 will be mobile on the platform 2!. The sockets 38 are socon'structed that the balls 40 will not accidentally'fall therefrom.

'The'pipe-bending mechanism 31- has secured to its upper surface a conventional unit which includes a housing 42 that is adapted to be connected to a source of hydraulic fluid or power. A frame 43 also constitutes part of the conventional bending unit, the frame 43 carrying the pair of blocks 44 which serve to engage one side of the pipe P being bent. A plunger 45'engages the opposite side of the pipe P, the plunger 45 being actuated by the. hydraulic pressure supplied to the housing 42.

, For supporting the free end of the pipe P, and for preventing the pipe P from scratching or otherwise damaging the layout chart-38, an auxiliary leveling unit 4B;is provided, Figure 7. The leveling unit 46 can be moved to any desired position, along the platform 2|, and the leveling unit 46 includes a horizontally disposed beam 41 which is supported by a pair of vertically disposed, threaded shafts48. ,The shafts 48 are each arranged in threaded engagement with abushing 49 that is secured to the beam, 41, there. being a shoe 50 arranged in, engagement with the lower end of each of the shafts 48. Ahand wheel 5| is mounted on the upper end of each of the shafts 48, sothat by properly rota-ting the hand wheel 5|, the shafts 48 can-be rotated to-raise and lower the corresponding end, ofthe beam 41 so as to level or properly align the free 'end of the pipe P being supported. 7 r

A means is provided for properly clamping the pipe P so that it will remain immobile while being bent, and this; means also'includes a' leveling mechanism to insure that the pipe P is at the proper horizontal level withrespect to the pipebending mechanism-.31, This last-named means for-levelingand' clamping the pipeP is designated generally bythe numeral 52, and it will be seen fromFigure l that; there-are two of these vise-like assemblies 52. Sinceeach of these vise-- like assemblies 52 hasthesarneconstruction, only one will be-describedin detail. The detailed construction of one, of these vise-like assemblies 52 isshown inFigures 3,,4, 5 and 6. V

The vise-like assembly 52 includes a vertically disposed post 53 which may be connected to the edge of the table 28 in any suitable manner, and a vertically disposed plate 54 has one end secured to the post 53, as by welding. The upper edge of the plate 54 slidably projects into a groove 55 which is arranged in the lower surface or base 55 of ajaw 51, Figure '5. The jaw 51 is adapted to be mountedso that it canbe moved toward and away from. the post 53, whereby the pipe P can be clamped between the jaw 51 and post 53 while the pipe is being bent. For causing this movement, a shaft 58 has a hand wheel 59 mounted on one end thereof, and a portion 68 of the shaft 58 is threaded exteriorly, the threaded portion 68 being arranged in engagement with a threaded bore 61 that is formed in the base 56 of the jaw 51. The other end of the shaft 58 is rotatably connected to a bushing 62, Figure 4, so that by properly rotating the hand wheel 59, the shaft 58 can be rotated to thereby move the jaw 51 toward and away from the post 53 to thereby clamp or release the pipe P between the jaw and post.

Each of the vise-like assemblies 52 further includes a means for vertically adjusting the pipe P so as to insure that it is properly leveled or aligned with respect to the pipe-bending mechanism 31. This last-named means includes a pair of spaced,

parallel partitions

63 and 64, Figure, 6, and these partitions 53 and 54 are slidably connected to the post 53 so that they can be 66, and the lower end of a vertically disposed,ex-

teriorly threaded shaft 61 is rotatably connected to the block 66. A hand wheel 68 is mountedon the upper end of the shaft 61 forrotating the latter, the shaft 61 being arranged in threaded engagement with a bushing 69 that is mounted on the upper end of the post 53. Thus, by properly rotating the handwheel 68, the shaftfi'l can be rotated to thereby raise or lower the

partitions

63 and 64 which support the pipe P; It is to be understood that during this vertical adjustment of the pipe P, the jaw 51- is not inits clamping position, so that there will be'no' interference with vertical adjustment of the pipeP. The partitions 63 and G4 slide; in or move'lin tracks or guideways that are defined by.;suit'able angle irons 69 which coact with the .post53; Fig-' ure 6, the angle irons 69 being securedto .:the post 53 and to a-horizontally disposed brace H.

In use, the table 28 is set up or assembled, as shown in the drawings, and the shoes or support members 23 are adjusted on the shaft 24 so as to properly level the platform 2| on the table. If desired, the drop leaf 28 is moved to its operative or horizontal position, as shown in Figure 1a, and then the piece of pipe P that'is to be bentor shaped is arranged so that it extends through the bending mechanism 31. The pipe P is alsorsupported by the partitions B3 and 64 of the vise-like assemblies 52, and an end of the pipe? projects over the layout chart 30 and is supported on ithe.

wheels 68 are manually rotated in order to raise or lower the

partitions

63 and 64, whereby the pipe P can be located at the correct. elevation with respect to the plunger 45 of the pipe-bending mechanism 31. Next, the hand wheels .59, are rotated to move the jaws 51 intoclamping-relation with respect to the pipe P, whereby thepipe will not accidentally move while being-bent'or acted upon by the pipe-bending mechanism. Then, the plunger 45 of the pipe-bending mechanism is actuated by the usual hydraulic means, whereby the pipe P is caused to be bent to a desired angle. The angle to which the pipe is.-being bent can be accurately and exactly ascertained by observing the layout chart 30 below the project ing end of the pipe. Also, the pipe P is accurately bent or shaped by simply moving the pipe-bending mechanism 31 along the platform 2|, and it is to be noted that it is not necessary to move the pipe P during this bending operation. The ball bearings 40 facilitate or insure a smooth movement of the pipe-bending mechanism 31 along the platform 2|. After the pipe P has been bent to the desired shape, the jaws 51 can be loosened by means of the wheels 59 and the pipe P removed from the apparatus.

From the foregoing, it is apparent that a method of and apparatus has been provided which will facilitate or expedite the bending of pipes or conduits, the apparatus of the present invention including a layout chart which will enable the user to form the pipe to a predetermined figure or measurement. In the present invention, the pipe is secured in a plane surface, after proper leveling adjustments have been made, and the bending mechanism is moved along the pipe to shape the latter. The drop leaf 28 can be quickly raised or lowered in the event that a left or reversed bend is to be made in the pipe. The bending mechanism 30 can be readily shifted along the pipe so as to enable the pipe to be bent to the desired shape. The plate 4| of the bending mechanism 3! enables a quick shifting of the bending mechanism to the desired location on the platform 2| We claim:

1. In combination, a table including a horizontally disposed platform, a plurality of vertically disposed legs for supporting said platform, a ground-engaging support member adjustably connected to the lower end of each of said legs, a pair of vises arranged in spaced relation along one side of said tableand connected thereto, each of said vises including a vertically disposed post, a jaw mounted for movement toward and away from said post for clamping a pipe therebetween, leveling partitions for supporting said pipe mounted for vertical adjustment with respect to said post, manually operable means for adjusting said jaws andv partitions, a calibrated chart arranged along a portion of the upper surface of said platform, a drop leaf hingedly connected to said platform.

2. In combination, a table including a horizontally disposed platform, a plurality of vertically disposed legs for supporting said platform, a ground-engaging support member adjustably connected to the lower end of each of said legs, a pair of vises arranged in spaced relation along one side of said table and connected thereto, each of said vises including a vertically disposed post, a jaw mounted for movement toward and away from said post for clamping a pipe therebetween, leveling partitions for supporting said pipe mounted for vertical adjustment with respect to said post, manually operable means for adjusting said jaws and partitions, a calibrated chart arranged along a portion of the upper surface of said platform, a drop leaf hingedly connected to said platform, and a pipe-bending mechanism movably mounted on said platform.

3. In combination, a table including a horizontally disposed platform, a plurality of vertically disposed legs for. supporting said platform,

a ground-engaging support member adjustably connected to the lower end of each of said legs, a pair of vises arranged in 'spacedrelation along one side of said table and connected thereto, each of said vises including a vertically disposed post, a jaw mounted for movement toward and away from said post for clamping a pipe therebetween, leveling partitions for supporting said pipe mounted for vertical adjustment with respect to said post, manually operable means for adjusting said jaws and partitions, a calibrated chart arranged along a portion of the upper surface of said platform, a drop leaf hingedly connected to said platform, a pipe-bending mechanism movably mounted on said platform, and an auxiliary leveling unit movably mounted on said platform for supporting the free end of the pipe being bent.

4. In combination, a table including a horizontally disposed platform, a pair of vises arranged in spaced relation along one side of said table and connected thereto. each of said vises including a vertically disposed post, a jaw mounted for movement toward and away from said post for clamping a pipe therebetween, leveling partitions for supporting said pipe mounted for vertical adjustment with respect to said post, manually operable means for adjusting said jaws and partitions, a calibrated chart arranged along a portion of the upper surface of said platform, and a drop leaf hingedly connected to said platform.

5. In combination, a table including a horizontally disposed platform, a pair of vises arranged in spaced relation along one side of said table and connected thereto, each of said vises including a vertically disposed post, a jaw mounted for movement toward and away from said post for clamping a pipe therebetween, leveling partitions for supporting said pipe mounted for vertical adjustment with respect to said post, manually operable means for adjusting said jaws and partitions, and a calibrated chart arranged along a portion of the upper surface of said platform.

6. In a pipe-bending layout, a table including a horizontally disposed platform, a pair of vises arranged in spaced relation along one side of said table and connected thereto, each of said vises including a vertically disposed post, a jaw mounted for movement toward and away from said post for clamping a pipe therebetween, leveling partitions for supporting said pipe mounted for vertical adjustment with respect to said post, and manually operable means for adjusting'said jaws and partitions.

JACK LEROY BLAKE. JOHN COCHRAN.

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

UNITED STATES PATENTS Number Name Date 1,410,691 McCallum Mar. 28, 1922 1,501,751 Crannell July15, 1924 1,514,025 Stensrud Nov. 4, 1924 1,772,899 Johnson Aug. 12, 1930 2,464,459 Newlon Mar. 15, 1949