US3743330A - Steel rod straining device - Google Patents

Steel rod straining device Download PDF

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Publication number
US3743330A
US3743330A US00177595A US3743330DA US3743330A US 3743330 A US3743330 A US 3743330A US 00177595 A US00177595 A US 00177595A US 3743330D A US3743330D A US 3743330DA US 3743330 A US3743330 A US 3743330A
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Prior art keywords
rod
strain applying
applying members
steel
members
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Expired - Lifetime
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US00177595A
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M Itatani
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MINATO SEIKI KOGYO KK
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MINATO SEIKI KOGYO KK
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B7/00—Connections of rods or tubes, e.g. of non-circular section, mutually, including resilient connections
    • F16B7/06—Turnbuckles
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49606—Turnbuckle making
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining
    • Y10T29/49893—Peripheral joining of opposed mirror image parts to form a hollow body
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00—Joints and connections
    • Y10T403/29—Rotarily connected, differentially translatable members, e.g., turn-buckle, etc.
    • Y10T403/291—Rotarily connected, differentially translatable members, e.g., turn-buckle, etc. having tool-engaging means or operating handle

Definitions

  • ABSTRACT A steel rod straining device has a pair of strain applying members, one having a right handed threaded tubular part thereon and the other having a left handed threaded tubular part thereon.
  • a steel rod extends between the strain applying members, one end of the rod having right handed threads thereon threaded into the right handed threaded tubular part on one of the strain applying members and the other end of the rod having left handed threads thereon threaded into the left handed threaded tubular part on the other of the strain applying members.
  • the strain applying members can be attached to the framework of a structure in which the steel rods are to be used as reinforcing rods.
  • This invention relates to a steel rod straining device. More specifically, this invention relates to an apparatus for straining the reinforcing steel rods used in buildings and other structures.
  • a commonly employed device for straining reinforcing rods in buildings, for example in prefabricated houses, has consisted of a pair of steel rods the outer ends of which are welded to a receiving plate and the inner ends of which are threaded into a turnbuckle. This commonly employed device is costly due to the relatively high cost of the turnbuckle.
  • FIG. 1 is a front view of a steel rod straining device according to the present invention
  • FIG. 2 is a partial view, on an enlarged scale of the device of FIG. ll;
  • FIG. 3 is a transverse section taken on line 3 3 of FIG. 2;
  • FIG. 4 is a transverse section taken on line 4 4 of FIG. 2
  • a pair of strain applying members and 10' of a steel plate have longitudinally extending slots 12 and 12' therein. Extending across the slots at the inner ends thereof are semicircular parts 11 and 11' which are integral with the plates. Key-hole shaped openings 13 and 13' are provided at the outer ends of the members, the smaller parts 14 and 14' of which extend outwardly from the larger parts. Semicircular elements 15 and 15 are positioned face to face with semicircular parts 11 and 11' and have the same shape as semicircular parts 11 and 11'.
  • the semicircular parts 11 and 11 and 15 and 15' are fastened by rivets or the like through flat portions 16 and 16' and 17 and 17, respectively, to form tubular parts 18 and 18' at the inner ends of members 10 and 10'.
  • Right-handed threads are cut inside tubular part 18 of strain applying member 10
  • left-handed threads are cut inside tubular part 18' of strain applying member 10'.
  • a steel reinforcing rod 19 is provided with connecting part 22 in the shape of a spanner with parallel flat faces at about half-way between the ends of the steel rod 19.
  • One end of the rod is provided with righthanded threads and the other end of the steel rod 19 is provided with left-handed threads 21.
  • Frame members or pillars of a building or like structure are shown at 23 and 23' and projections 24 and 24 are provided on the building or the structure.
  • said right-handed threads 20 and said left-handed threads 21 are threaded into said tubular parts 18 and 18' having the right-handed threads and and left-handed threads on the inner surface thereof on said pair of straining applying members 10 and 10, respectively.
  • the thus constructed straining device can be attached to projections 24 and 24' on the frame or pillar 23 and 23' of buildings or like structures by placing the larger parts of said key-hole like openings 13 and 13' at the outer ends of said strain applying plates 10 and 10' over said projections.
  • Said steel'rod 19 is rotated and the two ends are caused to'move into said slots 12 and 12' in said straining applying members 10 and 10 due to the opposite directions of said right-handed threads 20 and said left-handed threads 21, resulting in drawing said strain applying members 10 and 10 toward each other. This action reinforces the strain be tween said projections 24 and 24 on said pillars 23 and 23'.
  • the pair of straining applying members 10 and 10' can be manufactured on a large scale by a pressing operation, and accordingly, the cost of manufacturing said members 10 and 10' is low. Because the semicircular parts 11 and 11' formed at the inner end of said members 10 and 10' are at the inner ends of said slots 12 and 12' and during the straining action of said straining device the ends of said steel rod 19, move along the grooves 10 and 10 toward the outside ends thereof during rotation of said steel rod 19, there are no obstructions to the movement of the rod and accordingly the steel rod straining device of the present invention can be handled more easily than the conventional device using a turnbuckle. In ad dition, the steel rod straining device of the present invention can apply a larger amount of strain and it eliminates the use of a comparatively expensive turnbuckle.
  • tubular parts 18 and 18' can be formed by welding the opposed faces of the parts 16 and 16' and 17 and 17', or said semicircular parts 15 and 15' can be replaced with internally threaded tubular parts mounted firmly on members 10 and 10' by a method as welding.
  • a steel reinforcing rod device comprising a pair of strain applying members, each strain applying member being comprised of an elongated flat steel plate having a keyhole shaped opening at one end thereof and an elongated slot extending from a position adjacent said keyhole opening toward the other end of said elongated plate, said other end of said plate being bent in a semicylindrical shape and v being provided with screw threads, a corresponding semi-cylindrically shaped member having screw threads thereon positioned adjacent said semi-cylindrical portion of said plate and being riveted thereto thereby forming a tubular member having an internal screw thread, the tubular member on one of said strain applying members having a right handed screw thread and the tubular member on the other of said strain applying members having a left member on said other of said strain applying members, said ends of said rod extending through said tubular members into said elongated slots, and a flat portion positioned at an intermediate portion of said steel rod and adapted to be engaged with a tool for turning said

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Joining Of Building Structures In Genera (AREA)

Abstract

A steel rod straining device has a pair of strain applying members, one having a right handed threaded tubular part thereon and the other having a left handed threaded tubular part thereon. A steel rod extends between the strain applying members, one end of the rod having right handed threads thereon threaded into the right handed threaded tubular part on one of the strain applying members and the other end of the rod having left handed threads thereon threaded into the left handed threaded tubular part on the other of the strain applying members. The strain applying members can be attached to the framework of a structure in which the steel rods are to be used as reinforcing rods.

Description

United States Patent 1 Itatani STEEL ROD STRAINING DEVICE [75] Inventor: Mikio ltatani, Takatsuki, Japan [73] Assignee: Minato Selki Kogyo Knbushikl Kaisha, Osaka Prefecture, Japan [22] Filed: Sept. 3, 1971 [21] Appl. No.: 177,595
[52] US. Cl 287/60, 29/D1G. 21, 29/175 R,
[ July 3,1973
FOREIGN PATENTS OR APPLICATIONS 130,043 7/1919 Great Britain 287/60 118,769 9/1918 Great Britain 287/60 Primary Examiner-Jordan Franklin Assistant Eraminer-Wayne L. Shedd Attorney-E. F. Wenderoth, V. M. Creedon et al.
[57] ABSTRACT A steel rod straining device has a pair of strain applying members, one having a right handed threaded tubular part thereon and the other having a left handed threaded tubular part thereon. A steel rod extends between the strain applying members, one end of the rod having right handed threads thereon threaded into the right handed threaded tubular part on one of the strain applying members and the other end of the rod having left handed threads thereon threaded into the left handed threaded tubular part on the other of the strain applying members. The strain applying members can be attached to the framework of a structure in which the steel rods are to be used as reinforcing rods.
1 Claim, 4 Drawing Figures minnow 3 ms 3.743330 Sam 1 0f 2 MIKIO ITATANI, Inventor Attorneys rmmznm 3m; 3.743.330 my a or 2 MIKIO ITATANI, Inventor Attorneys 1 STEEL ROI) STRAINING DEVICE This invention relates to a steel rod straining device. More specifically, this invention relates to an apparatus for straining the reinforcing steel rods used in buildings and other structures.
A commonly employed device for straining reinforcing rods in buildings, for example in prefabricated houses, has consisted of a pair of steel rods the outer ends of which are welded to a receiving plate and the inner ends of which are threaded into a turnbuckle. This commonly employed device is costly due to the relatively high cost of the turnbuckle.
Itis an object of the present invention to provide an apparatus for straining steel rods which does not require a turnbuckle, which has a good straining effect, the construction of which is simple and which is manufactured easily.
An apparatus according to the present invention is illustrated in the accompanying drawings.
In the drawings:
FIG. 1 is a front view of a steel rod straining device according to the present invention;
FIG. 2 is a partial view, on an enlarged scale of the device of FIG. ll;
FIG. 3 is a transverse section taken on line 3 3 of FIG. 2; and
FIG. 4 is a transverse section taken on line 4 4 of FIG. 2
Referring now to the drawings, a pair of strain applying members and 10' of a steel plate have longitudinally extending slots 12 and 12' therein. Extending across the slots at the inner ends thereof are semicircular parts 11 and 11' which are integral with the plates. Key-hole shaped openings 13 and 13' are provided at the outer ends of the members, the smaller parts 14 and 14' of which extend outwardly from the larger parts. Semicircular elements 15 and 15 are positioned face to face with semicircular parts 11 and 11' and have the same shape as semicircular parts 11 and 11'. The semicircular parts 11 and 11 and 15 and 15' are fastened by rivets or the like through flat portions 16 and 16' and 17 and 17, respectively, to form tubular parts 18 and 18' at the inner ends of members 10 and 10'. Right-handed threads are cut inside tubular part 18 of strain applying member 10, and left-handed threads are cut inside tubular part 18' of strain applying member 10'. A steel reinforcing rod 19 is provided with connecting part 22 in the shape of a spanner with parallel flat faces at about half-way between the ends of the steel rod 19. One end of the rod is provided with righthanded threads and the other end of the steel rod 19 is provided with left-handed threads 21. Frame members or pillars of a building or like structure are shown at 23 and 23' and projections 24 and 24 are provided on the building or the structure.
As shown in the figures, said right-handed threads 20 and said left-handed threads 21 are threaded into said tubular parts 18 and 18' having the right-handed threads and and left-handed threads on the inner surface thereof on said pair of straining applying members 10 and 10, respectively.
The thus constructed straining device can be attached to projections 24 and 24' on the frame or pillar 23 and 23' of buildings or like structures by placing the larger parts of said key-hole like openings 13 and 13' at the outer ends of said strain applying plates 10 and 10' over said projections. Said steel'rod 19 is rotated and the two ends are caused to'move into said slots 12 and 12' in said straining applying members 10 and 10 due to the opposite directions of said right-handed threads 20 and said left-handed threads 21, resulting in drawing said strain applying members 10 and 10 toward each other. This action reinforces the strain be tween said projections 24 and 24 on said pillars 23 and 23'.
If it is necessary that the strain on said steel rod 19 and the pair of straining applying members 10 and 10 be released, this can easily be done by rotating said steel rod 19 in the opposite direction to that for producing straining.
From the foregoing explanation, the action of the steel rod straining device of the present invention can be clearly understood.
In the present invention, the pair of straining applying members 10 and 10' can be manufactured on a large scale by a pressing operation, and accordingly, the cost of manufacturing said members 10 and 10' is low. Because the semicircular parts 11 and 11' formed at the inner end of said members 10 and 10' are at the inner ends of said slots 12 and 12' and during the straining action of said straining device the ends of said steel rod 19, move along the grooves 10 and 10 toward the outside ends thereof during rotation of said steel rod 19, there are no obstructions to the movement of the rod and accordingly the steel rod straining device of the present invention can be handled more easily than the conventional device using a turnbuckle. In ad dition, the steel rod straining device of the present invention can apply a larger amount of strain and it eliminates the use of a comparatively expensive turnbuckle.
It will be understood that many changes can be made.
without changing the scope of the present invention. If it is desired, said tubular parts 18 and 18' can be formed by welding the opposed faces of the parts 16 and 16' and 17 and 17', or said semicircular parts 15 and 15' can be replaced with internally threaded tubular parts mounted firmly on members 10 and 10' by a method as welding.
It is thought that the invention and its advantages will be understood from the foregoing description and it is apparent that various changes may be made in the form, construction and arrangement of the parts without departing from the spirit and scope of the invention or sacrificing its material advantages, the form hereinbefore described and illustrated in the drawings being merely a preferred embodiment thereof.
I claim:
1. A steel reinforcing rod device comprising a pair of strain applying members, each strain applying member being comprised of an elongated flat steel plate having a keyhole shaped opening at one end thereof and an elongated slot extending from a position adjacent said keyhole opening toward the other end of said elongated plate, said other end of said plate being bent in a semicylindrical shape and v being provided with screw threads, a corresponding semi-cylindrically shaped member having screw threads thereon positioned adjacent said semi-cylindrical portion of said plate and being riveted thereto thereby forming a tubular member having an internal screw thread, the tubular member on one of said strain applying members having a right handed screw thread and the tubular member on the other of said strain applying members having a left member on said other of said strain applying members, said ends of said rod extending through said tubular members into said elongated slots, and a flat portion positioned at an intermediate portion of said steel rod and adapted to be engaged with a tool for turning said rod.

Claims (1)

1. A steel reinforcing rod device comprising a pair of strain applying members, each strain applying member being comprised of an elongated flat steel plate having a keyhole shaped opening at one end thereof and an elongated slot extending from a position adjacent said keyhole opening toward the other end of said elongated plate, said other end of said plate being bent in a semi-cylindrical shape and being provided with screw threads, a corresponding semi-cylindrically shaped member having screw threads thereon positioned adjacent said semi-cylindrical portion of said plate and being riveted thereto thereby forminG a tubular member having an internal screw thread, the tubular member on one of said strain applying members having a right handed screw thread and the tubular member on the other of said strain applying members having a left handed screw thread, a steel rod extending between said strain applying members, one end of said rod having right handed threads thereon and being threaded into said right handed threaded tubular member on said one of said strain applying members and the other end of said rod having left handed threads thereon and being threaded into the left handed threaded tubular member on said other of said strain applying members, said ends of said rod extending through said tubular members into said elongated slots, and a flat portion positioned at an intermediate portion of said steel rod and adapted to be engaged with a tool for turning said rod.
US00177595A 1971-09-03 1971-09-03 Steel rod straining device Expired - Lifetime US3743330A (en)

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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3997945A (en) * 1975-12-08 1976-12-21 Pti - Dolco Apparatus for exerting a compressive force including friction gripping device therefore
US4537388A (en) * 1982-05-14 1985-08-27 Mccabe Francis B Adjustable tensioning device
NL9300663A (en) * 1993-04-20 1994-11-16 Vincent Alfred Joseph Woudsma Method for connecting wooden elements (panels), and connecting member to be used for this method
US5622354A (en) * 1995-12-14 1997-04-22 Chagnot; Brian Post plumbing device
US5853163A (en) * 1995-12-14 1998-12-29 Chagnot; Brian Post plumbing device
US5971669A (en) * 1998-05-15 1999-10-26 L.B. Foster Company Mechnically stabilized retaining wall system having adjustable connection means for connecting precast concrete facing panels thereto
US20030223825A1 (en) * 2002-05-31 2003-12-04 The Reinforced Earth Company Two stage wall connector
US20110012077A1 (en) * 2009-07-14 2011-01-20 Tony Ramsey Device for eliminating fence gate sagging and method therein
US20140014599A1 (en) * 2012-07-13 2014-01-16 International Business Machines Corporation Ruggedizing large server storage frame
US20150174706A1 (en) * 2013-12-19 2015-06-25 Mathew W. McClure Apparatus for aligning sections of pipe
US20180126536A1 (en) * 2016-11-08 2018-05-10 Caterpillar Inc. Hammer sideplate tightening mechanism
US10227079B2 (en) * 2015-03-04 2019-03-12 Kevin Meyers, LLC Load maneuvering

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US898887A (en) * 1907-12-14 1908-09-15 Joseph C Heyman Stump-puller.
US1245095A (en) * 1917-10-30 Turnbuckle
GB118769A (en) * 1918-01-04 1918-09-12 Francis Alfred Jennings An Improved Turn-buckle or Straining Device for Wires, Cords and the like.
GB130043A (en) * 1918-01-03 1919-07-31 Sopwith Aviat Company Ltd Improvements in Turn-buckles for use in connection with Stays and Bracings.
US1359391A (en) * 1917-10-31 1920-11-16 Landymore James William Coupling device
US1423235A (en) * 1921-04-13 1922-07-18 Walter O Fredrikson Brake-rod adjuster
US1683516A (en) * 1926-06-07 1928-09-04 J G Brill Co Brake rod
US2165478A (en) * 1937-06-22 1939-07-11 John H Gross Turnbuckle

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1245095A (en) * 1917-10-30 Turnbuckle
US898887A (en) * 1907-12-14 1908-09-15 Joseph C Heyman Stump-puller.
US1359391A (en) * 1917-10-31 1920-11-16 Landymore James William Coupling device
GB130043A (en) * 1918-01-03 1919-07-31 Sopwith Aviat Company Ltd Improvements in Turn-buckles for use in connection with Stays and Bracings.
GB118769A (en) * 1918-01-04 1918-09-12 Francis Alfred Jennings An Improved Turn-buckle or Straining Device for Wires, Cords and the like.
US1423235A (en) * 1921-04-13 1922-07-18 Walter O Fredrikson Brake-rod adjuster
US1683516A (en) * 1926-06-07 1928-09-04 J G Brill Co Brake rod
US2165478A (en) * 1937-06-22 1939-07-11 John H Gross Turnbuckle

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3997945A (en) * 1975-12-08 1976-12-21 Pti - Dolco Apparatus for exerting a compressive force including friction gripping device therefore
US4537388A (en) * 1982-05-14 1985-08-27 Mccabe Francis B Adjustable tensioning device
NL9300663A (en) * 1993-04-20 1994-11-16 Vincent Alfred Joseph Woudsma Method for connecting wooden elements (panels), and connecting member to be used for this method
US5622354A (en) * 1995-12-14 1997-04-22 Chagnot; Brian Post plumbing device
US5853163A (en) * 1995-12-14 1998-12-29 Chagnot; Brian Post plumbing device
US5971669A (en) * 1998-05-15 1999-10-26 L.B. Foster Company Mechnically stabilized retaining wall system having adjustable connection means for connecting precast concrete facing panels thereto
WO1999060217A1 (en) * 1998-05-15 1999-11-25 L.B. Foster Company Mechanically stabilized retaining wall system having adjustable connection means for connecting precast concrete facing panels thereto
US20030223825A1 (en) * 2002-05-31 2003-12-04 The Reinforced Earth Company Two stage wall connector
US6802675B2 (en) * 2002-05-31 2004-10-12 Reinforced Earth Company Two stage wall connector
US20110012077A1 (en) * 2009-07-14 2011-01-20 Tony Ramsey Device for eliminating fence gate sagging and method therein
US20140014599A1 (en) * 2012-07-13 2014-01-16 International Business Machines Corporation Ruggedizing large server storage frame
US8960451B2 (en) * 2012-07-13 2015-02-24 International Business Machines Corporation Ruggedizing large server storage frame
US20150174706A1 (en) * 2013-12-19 2015-06-25 Mathew W. McClure Apparatus for aligning sections of pipe
US9808893B2 (en) * 2013-12-19 2017-11-07 Walhonde Tools Inc. Apparatus for aligning sections of pipe
US20180056458A1 (en) * 2013-12-19 2018-03-01 Matthew W. McClure Apparatus for Aligning Sections of Pipe
US11110552B2 (en) * 2013-12-19 2021-09-07 Matthew W. McClure Apparatus for aligning sections of pipe
US10227079B2 (en) * 2015-03-04 2019-03-12 Kevin Meyers, LLC Load maneuvering
US10689019B2 (en) 2015-03-04 2020-06-23 Kevin Myers, LLC Load maneuvering
US20180126536A1 (en) * 2016-11-08 2018-05-10 Caterpillar Inc. Hammer sideplate tightening mechanism
US10377029B2 (en) * 2016-11-08 2019-08-13 Caterpillar Inc. Hammer sideplate tightening mechanism

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