US2785477A - Conduit bending guide - Google Patents

Conduit bending guide Download PDF

Info

Publication number
US2785477A
US2785477A US534652A US53465255A US2785477A US 2785477 A US2785477 A US 2785477A US 534652 A US534652 A US 534652A US 53465255 A US53465255 A US 53465255A US 2785477 A US2785477 A US 2785477A
Authority
US
United States
Prior art keywords
mounting plate
pipe
conduit
bending guide
lower mounting
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
US534652A
Inventor
Earl F Gregory
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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
Application filed by Individual filed Critical Individual
Priority to US534652A priority Critical patent/US2785477A/en
Application granted granted Critical
Publication of US2785477A publication Critical patent/US2785477A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • B21D7/00Bending rods, profiles, or tubes
    • B21D7/06Bending rods, profiles, or tubes in press brakes or between rams and anvils or abutments; Pliers with forming dies

Definitions

  • This invention relates to a device especially adapted to be utilized in conjunction with bending pipes and other similar conduits, and has for its primary object the"provision of means for providing a guide adapted to'enable true radius bends to be made in a pipe in a convenient manner.
  • the construction of this invention features a transparent block having a tube with an air bubble therein, with the tube arranged in a suitable arc.
  • the transparent block has a slot therein for the reception of cards which have indicia thereon cooperating with the bubble in the tube to provide an indication to the user of the number of bends or presses which must be made .in a pipe at given points to arrive at the desired bend of the radius desired.
  • a further object of the invention resides in the provision of a conduit bending guide which employs novel means for adjustment so as to assure that it can be ass cured on the pipe to be bent in a selected and initial position and which employs means for allowing different cardw-having varying indicia thereon to be readily substituted for one another so as to enable the device to be utilized in forming bends of varying curvatures.
  • Still further objects and features of this invention reside in the provision of a conduit bending guide that is simple in construction, highly efiicient in operation, relatively inexpensive to manufacture, and efiicient in use.
  • Figure l is a perspective view illustrating the conduit bending guide as associated with a length of pipe and operatively installed on a work table for use in bending the pipe to the desired radius;
  • Figure 7 is a rear elevational view of the card shown in Figure 6.
  • the conduit bending guide is suitably mounted on the section of pipe 12 which is secured in a vise 14.
  • the vise 14 has an upper clamping member 16 as well as a lower clamping member 18 and is adjusted by a threaded member 20 in the conventional manner of a clamp press.
  • the vise 14 is slidably mounted on a table 22 of suitable length which has a guide bar 24 mounted thereon in any convenient manner.
  • the vise 14 is adapted to engage the guide bar 24 to assure its travel in the desired direction.
  • an upper mounting plate 62 Secured to and spaced from the lower mounting plate 42 is an upper mounting plate 62. Suitable spacer fasteners 64 and 66 hold one end of the upper mounting plate 62 in spaced relationship from the lower mounting plate 42. However, a bolt 68 extends through suitable aligned apertures in the upper and lower mounting plates 62 and 42 respectively and a wing nut 70 is used for engagement about the threaded fastener or bolt 68. Positioned about the bolt 68 and resiliently yieldingly engaging the upper surface of the lower mounting plate 42 and the lower surface of the upper mounting plate 62 is a spring 72. Hence, by utilization of the nut 70, the upper mounting plate 62 can be suitably angularly adjusted with respect to the lower mounting plate 42, the fasteners 64 and 66 not being of such rigidity as to prevent this adjustment.
  • Each of the cards 84 is provided with. suitable indicia thereon.
  • This indicia is in the form of radius marks 90 for indicating the angular relationship of the guide for each successive bend of the bending apparatus 40.
  • On the obverse side of the card 84 there is shown other indicia 92 having suitable graduations 94 for indicating the distance that the pipe ILZShOllld be moved "for each successive bend of the'bending apparatus 4%? to form the bend desired.
  • the guide is positioned on the pipe with the bubble 8i) adjusted to zero. Then, a first press is made and the pipe is then moved in accordance with the indicia 94 the proper distance, at which time another press is made until the bubble centers on the radial indicia 90 indicated as the first line. Then, successive movements and successive presses are made until the conduit is for-med in the shape desired.
  • a conduit bending guide comprising a lower mounting plate, means for securing said lower mounting plate on a conduit, an upper mounting plate carried by said lower mounting plate, a transparent block secured on 'said upper mounting plate, said block having a slot therein for receiving an indicator card, an arcuate tube embedded said block, said tube being substantially filled with liuid to form an air bubble in said tube, an indicator card in said slot, said indicator card having indicia thereon, said indicia being arranged in alignment with said arcuate tube, said means for securing said lower mounting plate on a conduit including chains secured to said lower mouting plate at one edge portion thereof, said lower mounting plate having apertures therein 'adja'ce'iit another edge portion thereof, and springs secured “to said chains, said springs having hook ends enga'geable in said apertures, and means for adjusting said upper mounting plate with respect to said lower mounting plate.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)

Description

March 19, 1957 E. F. GREGORY 2,735,477
CONDUIT BENDING GUIDE 2 Sheets-Sheet 1 Filed Sept. 16, 1955 March 19, 1957 E. F. GREGORY 2,735,477
CONDUIT BENDING GUIDE Filed Sept. 16, 1955 2 Sheets-Sheet 2 Earl F. Gregor INVEN TOR.
2,785,477 Patented Mar. 19, 1957 v This invention relates to a device especially adapted to be utilized in conjunction with bending pipes and other similar conduits, and has for its primary object the"provision of means for providing a guide adapted to'enable true radius bends to be made in a pipe in a convenient manner.
The construction of this invention features a transparent block having a tube with an air bubble therein, with the tube arranged in a suitable arc. The transparent block has a slot therein for the reception of cards which have indicia thereon cooperating with the bubble in the tube to provide an indication to the user of the number of bends or presses which must be made .in a pipe at given points to arrive at the desired bend of the radius desired.
A further object of the invention resides in the provision of a conduit bending guide which employs novel means for adjustment so as to assure that it can be ass cured on the pipe to be bent in a selected and initial position and which employs means for allowing different cardw-having varying indicia thereon to be readily substituted for one another so as to enable the device to be utilized in forming bends of varying curvatures.
Still further objects and features of this invention reside in the provision of a conduit bending guide that is simple in construction, highly efiicient in operation, relatively inexpensive to manufacture, and efiicient in use.
These, together with the various ancillary objects and features of the invention which will become apparent as the following description proceeds, are attained by this conduit bending guide, a preferred embodiment of which has been illustrated in the accompanying drawings, by way of example only, wherein:
Figure l is a perspective view illustrating the conduit bending guide as associated with a length of pipe and operatively installed on a work table for use in bending the pipe to the desired radius;
Figure 2 is an enlarged perspective View of the conduit bending guide;
Figure 3 is an enlarged vertical sectional view as taken along the plane of line 3-3 in Figure 2 illustrating the relative position of the slot and the arcuate tube;
Figure 4 is an enlarged horizontal sectional detail view as taken along the plane of line 44 in Figure 2 illustrating in particular the means utilized for positioning the conduit bending guide on a pipe or like member;
Figure 5 is an enlarged sectional detail view as taken along the plane of line 5- in Figure 4;
Figure 6 is an elevational view of one of the cards utilized in conjunction with the present invention; and
Figure 7 is a rear elevational view of the card shown in Figure 6.
With continuing reference to the accompanying draw ings wherein like reference numerals designate similar parts throughout the various views, reference numeral 10 generally designates the conduit bending guide which is adapted to be utilized to enable a section of pipe, as at 12, to be bent to the desired radius of curvature. In
use, the conduit bending guide is suitably mounted on the section of pipe 12 which is secured in a vise 14. The vise 14 has an upper clamping member 16 as well as a lower clamping member 18 and is adjusted by a threaded member 20 in the conventional manner of a clamp press. The vise 14 is slidably mounted on a table 22 of suitable length which has a guide bar 24 mounted thereon in any convenient manner. The vise 14 is adapted to engage the guide bar 24 to assure its travel in the desired direction.
Mounted on the table 22 is a winch 26 having a drum 28 about which a chain or a cable 30 has an end secured.
The drum 28 is mounted for rotation on suitable bearing mounts 3t) and 32 through which the shaft 24 on which the drum 28 is secured extends. A handle 36 is provided for rotating the shaft 34 and hence the drum 28. The other end of the chain or cable 30 is secured to the vise M and upon rotation of the shaft 34 and hence the drum 28, the vise 14 will be moved toward the winch suitably guided by the guide bar 24.
Secured on the table 22 and adapted to clampingly engage the pipe or conduit 12 is a conventional pipe bender 46. As the pipe 12 is moved by action of the winch 26, the pipe bender 40 is adapted to make successive bends in the pipe.
In order to inform the user of the conduit bending guide it) of the desired amount of movement for the pipe 14 and the desired amount of bend to be applied on the pipe, the guide 10 is secured about the pipe 12. This conduit bending guide includes a lower mounting plate 42 having a pair of studs 44 and 46 extending outwardly from one end portion thereof. Positioned about this end portion are chains 48, the ends of which have springs 5t) and 52 secured thereto. The springs 56 and 52 have hook- like ends 54 and 56 engageable within apertures 58 and 68 in the lower mounting plate 42. The lower mounting plate 42 is preferably of channel shape in construction to provide suitable engagement with the pipe 12 independent of the diameter of the pipe.
Secured to and spaced from the lower mounting plate 42 is an upper mounting plate 62. Suitable spacer fasteners 64 and 66 hold one end of the upper mounting plate 62 in spaced relationship from the lower mounting plate 42. However, a bolt 68 extends through suitable aligned apertures in the upper and lower mounting plates 62 and 42 respectively and a wing nut 70 is used for engagement about the threaded fastener or bolt 68. Positioned about the bolt 68 and resiliently yieldingly engaging the upper surface of the lower mounting plate 42 and the lower surface of the upper mounting plate 62 is a spring 72. Hence, by utilization of the nut 70, the upper mounting plate 62 can be suitably angularly adjusted with respect to the lower mounting plate 42, the fasteners 64 and 66 not being of such rigidity as to prevent this adjustment.
Bonded to the upper mounting plate 62 or otherwise secured thereto is a block 76 of any suitable transparent plastic material in which an arcuate tube 78 is embedded. The tube is filled with a suitable fluid, such as oil or the like, and an air bubble 80 is provided in the fluid. The tube 78 is shaped to conform to a portion of a circle of selected radius.
The transparent block 7 6 is provided with a substantially rectangular slot 82 therein of sutficient size so as to receive an indicator card 84 in the slot. The slot 82 is positioned to the rear of the arcuate tube 78 and is provided with an enlarged portion 86 for enabling the removal and replacement of the cards 84.
Each of the cards 84 is provided with. suitable indicia thereon. This indicia is in the form of radius marks 90 for indicating the angular relationship of the guide for each successive bend of the bending apparatus 40. On the obverse side of the card 84, there is shown other indicia 92 having suitable graduations 94 for indicating the distance that the pipe ILZShOllld be moved "for each successive bend of the'bending apparatus 4%? to form the bend desired.
In use, after the desired card 84 has been selected so as to obtain the bend desired, the guide is positioned on the pipe with the bubble 8i) adjusted to zero. Then, a first press is made and the pipe is then moved in accordance with the indicia 94 the proper distance, at which time another press is made until the bubble centers on the radial indicia 90 indicated as the first line. Then, successive movements and successive presses are made until the conduit is for-med in the shape desired.
The foregoing is considered as illustrative only of the principles of the invention. Further, since numerous modifications and changes will readily occur to those skilled in the art, it is not desired to limit the invention to the exact construction and operation shown and described, and accordingly, all suitable modifications and equivalents may be resorted to, falling within the scope of the invention as claimed.
What is claimed as new is as follows:
1. A conduit bending guide comprising a lower mounting plate, means for securing said lower mounting plate on a conduit, an upper mounting plate carried by said lower mounting plate, a transparent block secured on said upper mounting plate, said block having a slot therein for receiving an indicator card, an arcuate tube embedded in said block, said tube being substantially filled with fluid to form an air bubble in said tube, and means for adjusting said upper mounting plate with respect to said lower mounting plate.
2. A conduit bending guide comprising a lower mountingiplate, means for securing said lower mounting plate on a conduit, "an upper mounting plate carried by said lower mounting plate, a transparent block secured on said upper mounting plate, said block having a slot therein for receiving an iridicator card, an arcuate tube embedded in said block, said tube being substantially filled with fluid to form an air bubble in said tube, an indicator card in said slot, said indicator card having indicia thereon, said indicia being arranged in alignment with said arcuate tube, and means for adjusting said upper mounting plate with respect to said lower mounting plate.
3. A conduit bending guide comprising a lower mounting plate, means for securing said lower mounting plate on a conduit, an upper mounting plate carried by said lower mounting plate, a transparent block secured on 'said upper mounting plate, said block having a slot therein for receiving an indicator card, an arcuate tube embedded said block, said tube being substantially filled with liuid to form an air bubble in said tube, an indicator card in said slot, said indicator card having indicia thereon, said indicia being arranged in alignment with said arcuate tube, said means for securing said lower mounting plate on a conduit including chains secured to said lower mouting plate at one edge portion thereof, said lower mounting plate having apertures therein 'adja'ce'iit another edge portion thereof, and springs secured "to said chains, said springs having hook ends enga'geable in said apertures, and means for adjusting said upper mounting plate with respect to said lower mounting plate.
References Cited in the file of this patent UNITED STATES PATENTS 2,072,779 Torbert Mar. 2, 1937 2,656,607 Harding Oct. 27, 1933 FOREIGN PATENTS 559,325 Great Britain Feb. 14, 1 9 44 452,152 :Switzerland Oct. 10, {9419 280,539 Switzerland May 1, -2
US534652A 1955-09-16 1955-09-16 Conduit bending guide Expired - Lifetime US2785477A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US534652A US2785477A (en) 1955-09-16 1955-09-16 Conduit bending guide

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US534652A US2785477A (en) 1955-09-16 1955-09-16 Conduit bending guide

Publications (1)

Publication Number Publication Date
US2785477A true US2785477A (en) 1957-03-19

Family

ID=24130968

Family Applications (1)

Application Number Title Priority Date Filing Date
US534652A Expired - Lifetime US2785477A (en) 1955-09-16 1955-09-16 Conduit bending guide

Country Status (1)

Country Link
US (1) US2785477A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3009254A (en) * 1960-05-27 1961-11-21 Homer S Youngs Level
US3116779A (en) * 1962-07-17 1964-01-07 Arvin Ind Inc Apparatus for locating pipe bends
US3590617A (en) * 1968-05-13 1971-07-06 Ralph W Mount Pipe bending tool with improved angular indicator
US5103569A (en) * 1990-09-24 1992-04-14 The Level Corporation Multipurpose combination leveling tool
US6332277B1 (en) 1999-07-06 2001-12-25 Greg J. Owoc Level with securing apparatus
US6640456B2 (en) * 2000-12-04 2003-11-04 Greg Owoc Level with attachments
US9404723B2 (en) 2013-09-13 2016-08-02 Strapstick LLC Drill pipe measuring system

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2072779A (en) * 1935-09-16 1937-03-02 Jr John E Torbert Testing and setting device for artificial horizon instruments
GB559325A (en) * 1942-11-30 1944-02-14 Ronald John Stevens Improvements in or relating to spirit levels
CH280539A (en) * 1950-02-10 1952-01-31 Ochsenbein Engelbert Gauge with dragonflies.
US2656607A (en) * 1952-01-28 1953-10-27 Claude J Harding Aligning device
CH452152A (en) * 1965-11-29 1968-05-31 Svenska Flaektfabriken Ab Valve to regulate the air flow in a room

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2072779A (en) * 1935-09-16 1937-03-02 Jr John E Torbert Testing and setting device for artificial horizon instruments
GB559325A (en) * 1942-11-30 1944-02-14 Ronald John Stevens Improvements in or relating to spirit levels
CH280539A (en) * 1950-02-10 1952-01-31 Ochsenbein Engelbert Gauge with dragonflies.
US2656607A (en) * 1952-01-28 1953-10-27 Claude J Harding Aligning device
CH452152A (en) * 1965-11-29 1968-05-31 Svenska Flaektfabriken Ab Valve to regulate the air flow in a room

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3009254A (en) * 1960-05-27 1961-11-21 Homer S Youngs Level
US3116779A (en) * 1962-07-17 1964-01-07 Arvin Ind Inc Apparatus for locating pipe bends
US3590617A (en) * 1968-05-13 1971-07-06 Ralph W Mount Pipe bending tool with improved angular indicator
US5103569A (en) * 1990-09-24 1992-04-14 The Level Corporation Multipurpose combination leveling tool
US6332277B1 (en) 1999-07-06 2001-12-25 Greg J. Owoc Level with securing apparatus
US6640456B2 (en) * 2000-12-04 2003-11-04 Greg Owoc Level with attachments
US9404723B2 (en) 2013-09-13 2016-08-02 Strapstick LLC Drill pipe measuring system

Similar Documents

Publication Publication Date Title
US3776539A (en) Plastic pipe bending jig
US2785477A (en) Conduit bending guide
US5402579A (en) C-clamps with integral bubble levels
DE59004511D1 (en) TRIPOD EQUIPPED WITH ADDITIONAL DEVICES FOR HOLDING A FREE-POSITIONABLE DEVICE.
US4785650A (en) Tube pipe bender assembly
US2581021A (en) Bilaterally and uniformly extensible unit
FR2425626A1 (en) DEVICE FOR CORRECTING DEFECTS IN A LENGTH MEASURING APPARATUS, AND PROCESS FOR MAKING A DEFECT CORRECTION CURVE
US2455138A (en) Pivoted bender with reversible clamp and former
US2876822A (en) Arrow runout tester and straightener
US2403420A (en) Protractor for pipe bending machines
ES221561A1 (en) Template cutting apparatus for bent sheets of glass or the like
US2950536A (en) Method and apparatus for angular measurement of pipe bends
FR2421011A1 (en) CURVED WINDING ARM, ESPECIALLY FOR WIRE WINDING MACHINES
US2350274A (en) Material straightening apparatus
US2246088A (en) Ruler attachment for facilitating the drawing of parallel lines
US2719561A (en) Bench supported, hand operated tube bender
CN209992319U (en) Bending instrument for bending test for steel bar with adjustable bending core diameter
US3561126A (en) Apparatus for marking bend locations on tubular stock
GB1204850A (en) Improvements in or relating to drawing machines
US2893131A (en) Pipe cutting indicator
US3821887A (en) Method and apparatus for locating pipe bends
US3722065A (en) Apparatus for positioning metering devices
US2907116A (en) Pipe bender gauge
US3981173A (en) Apparatus for bending conduits
US3270540A (en) Apparatus for straightening bent articles