US2479230A - Torque measuring tool - Google Patents

Torque measuring tool Download PDF

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Publication number
US2479230A
US2479230A US616573A US61657345A US2479230A US 2479230 A US2479230 A US 2479230A US 616573 A US616573 A US 616573A US 61657345 A US61657345 A US 61657345A US 2479230 A US2479230 A US 2479230A
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United States
Prior art keywords
tool
measuring tool
torque measuring
torsion
slot
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Expired - Lifetime
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US616573A
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Clement E Gossling
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Individual
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
    • B25B23/14—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers
    • B25B23/142—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers specially adapted for hand operated wrenches or screwdrivers
    • B25B23/1422—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers specially adapted for hand operated wrenches or screwdrivers torque indicators or adjustable torque limiters
    • B25B23/1427—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers specially adapted for hand operated wrenches or screwdrivers torque indicators or adjustable torque limiters by mechanical means

Definitions

  • the present invention relates to improvements in tools for applying a turning force to bolts, nuts, screws or other pieces of mechanism where it is desired to accurately apply a desired torsional loading so that the piece being tightened will not y be subjected to undesirable or injurious stress and the principal obj ect of the invention is to provide anextremely simple form of tool which may be universally applied to various uses and will be free of delicate mechanisms which may-become distorted and inaccurate through use and abnormal conditions.
  • a further and important object is to devise a construction of tool which will enable its being produced in quantity at relatively low cost, thereby enabling a much wider range of use than tools having delicate mechanisms liable to get out of order.
  • the principal feature of the invention consists in the novel arrangement of a torsion member xed at one end in the tool handle and connected at the other end to the load applying element, and registering with fixed gaugemarkings arranged longitudinally of the handle structure to indicate the torque applied through the torsional deflection of said torsion member.
  • Figure 1 is a plan view of my improved tool.
  • Figure 2 is a longitudinal mid-sectional View of the tool taken on the line 2-2 of Figure 1.
  • Figure 3 is a plan section taken through the line 3 3 of Figure 2 and illustrating the deflection of the longitudinal torsion member.
  • torsion wrenches Numerous forms of torsion wrenches have been devised for the purpose of obviating the application of torsional force to the work piece ⁇ which would overstrain or injure the same. ⁇ Suchidevices have employed a resilient yielding means between the load applying member and the portion engaging the work piece and in these devices various forms of indicators have been arranged, either connected with the work engaging member or the resilient member, to indicate the extent of the torsional load applied.
  • tubular handle member I having an enlarged end 2 is threaded into a cylindrical portion 3 of a hollow head 4.
  • a bushing 5 mounted within the head 4 in angular relation to the handle I is a bushing 5 in which is journalled a spindle 6, the outer end of which, projecting beyond the head, is fashioned to carry a 5 Claims. (Cl. 73-139) suitable Work engaging tool, such as wrench or screw ⁇ driver bit. v A
  • AV bevel gear quadrant 1 which is shown as having its upper face engaging a bearing surface 8 of a cap 9 threaded in a threaded orifice in the topof the head 4.
  • a bushing I0 is mounted in the end of the tubu lar handle member extending intothe head 4.
  • a bevel pinion II having a cylindrical stem I2 journalled in the bushing I0 is housed in the hollow head 4 and meshes with the bevel gear quadrant r1 so that any rotative movement of the spindle 6 within its bearing will be imparted to the pinion.
  • the stem I2 of the pinion II is formedwith a longitudinal and axial slot I3.
  • a torsion member I4 here shown as a flat strip of material, the dimensions and characteristics kof whichl will be suitably proportioned to the desired loading of the tool, has one end inserted in the slot I3 of the pinion stemand said strip extends longitudinally within the tubular handle and has its outer end housed in an axial longitudinal'slot I5 in a headed cylindrical member I6 rigidlysecured in the outer end of thehandle by a cross pin I1.
  • the tubular handle a socket I is provided with a narrow longitudinal slot or slots I8 which is parallel with I one longitudinal ⁇ edge of the torsion member A I4 and suitable gauge marks I9 are arranged on the outer surface of the tube along the edge of the slot.
  • the upper edge of the torsion member will be suitably lplated or colouredfto present a contrasting appearance to the colour of the handle tube, the interior wall of which may also be contrastingly coloured as desired so that the relative position of the edge of the torsion member and the edge of the longitudinal slot or holes may be readily observed.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)

Description

Aug- 16, 1949- c. E. GossLlNG TORQUE MEASURING TOOL Filed sept. 15, 1945.
(nfl,
Patented Aug. 16, 1949 UNITED STA-TES PATENT r Yor PlcEi-i y, Y 2,479,230
. TQRQUEMEASURING rrooL s' Clement E. Gossling, Toronto, Ontario, Canada i VApplsieetion september V15, 1945, serial No. 616,513 f The present invention relates to improvements in tools for applying a turning force to bolts, nuts, screws or other pieces of mechanism where it is desired to accurately apply a desired torsional loading so that the piece being tightened will not y be subjected to undesirable or injurious stress and the principal obj ect of the invention is to provide anextremely simple form of tool which may be universally applied to various uses and will be free of delicate mechanisms which may-become distorted and inaccurate through use and abnormal conditions. I
A further and important object is to devise a construction of tool which will enable its being produced in quantity at relatively low cost, thereby enabling a much wider range of use than tools having delicate mechanisms liable to get out of order.
The principal feature of the invention consists in the novel arrangement of a torsion member xed at one end in the tool handle and connected at the other end to the load applying element, and registering with fixed gaugemarkings arranged longitudinally of the handle structure to indicate the torque applied through the torsional deflection of said torsion member.
In the accompanying drawings Figure 1 is a plan view of my improved tool.
Figure 2 is a longitudinal mid-sectional View of the tool taken on the line 2-2 of Figure 1. Y
Figure 3 is a plan section taken through the line 3 3 of Figure 2 and illustrating the deflection of the longitudinal torsion member.
Numerous forms of torsion wrenches have been devised for the purpose of obviating the application of torsional force to the work piece `which would overstrain or injure the same.` Suchidevices have employed a resilient yielding means between the load applying member and the portion engaging the work piece and in these devices various forms of indicators have been arranged, either connected with the work engaging member or the resilient member, to indicate the extent of the torsional load applied.
In the present invention it is proposed to utilize the resilient load applying member directly as the load indicating means.
In the construction herein shown a tubular handle member I having an enlarged end 2 is threaded into a cylindrical portion 3 of a hollow head 4.
Mounted within the head 4 in angular relation to the handle I is a bushing 5 in which is journalled a spindle 6, the outer end of which, projecting beyond the head, is fashioned to carry a 5 Claims. (Cl. 73-139) suitable Work engaging tool, such as wrench or screw` driver bit. v A
The inner end-ofthe spindle Erhas formed thereon or rigidly securedthereto .aV bevel gear quadrant 1 which is shown as having its upper face engaging a bearing surface 8 of a cap 9 threaded in a threaded orifice in the topof the head 4.
A bushing I0 is mounted in the end of the tubu lar handle member extending intothe head 4. A bevel pinion II having a cylindrical stem I2 journalled in the bushing I0 is housed in the hollow head 4 and meshes with the bevel gear quadrant r1 so that any rotative movement of the spindle 6 within its bearing will be imparted to the pinion.
The stem I2 of the pinion II is formedwith a longitudinal and axial slot I3.
A torsion member I4, here shown as a flat strip of material, the dimensions and characteristics kof whichl will be suitably proportioned to the desired loading of the tool, has one end inserted in the slot I3 of the pinion stemand said strip extends longitudinally within the tubular handle and has its outer end housed in an axial longitudinal'slot I5 in a headed cylindrical member I6 rigidlysecured in the outer end of thehandle by a cross pin I1.
The tubular handle a socket I is provided witha narrow longitudinal slot or slots I8 which is parallel with I one longitudinal` edge of the torsion member A I4 and suitable gauge marks I9 are arranged on the outer surface of the tube along the edge of the slot.
It will be understood that a row of holes may be substituted for the slots I8.
' The upper edge of the torsion member will be suitably lplated or colouredfto present a contrasting appearance to the colour of the handle tube, the interior wall of which may also be contrastingly coloured as desired so that the relative position of the edge of the torsion member and the edge of the longitudinal slot or holes may be readily observed.
When the tool is unloaded the edge of the torsion strip will be visible and in line throughout the entire length of the slot or row of holes.
Upon the application of a load to the work piece, the turning movement of the tool causes the spindle 6 to turn in its bearing and through the gears 1 and II such movement will be imparted to the torsion member I4 and as its outer end is anchored, such member will be deflected into helicoidal form. Y
As the torsion member is thus deflected the edge thereof will be moved out of alignment with the
US616573A 1945-09-15 1945-09-15 Torque measuring tool Expired - Lifetime US2479230A (en)

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Application Number Priority Date Filing Date Title
US616573A US2479230A (en) 1945-09-15 1945-09-15 Torque measuring tool

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US616573A US2479230A (en) 1945-09-15 1945-09-15 Torque measuring tool

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3527328A1 (en) * 2018-02-14 2019-08-21 Ruetschi Technology AG A disposable instrument for torque control tightening a threaded implant device
US11446123B2 (en) 2017-03-15 2022-09-20 Ruetschi Technology Ag Medical instrument for torque control tightening a threaded implant device and packaging of the same

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2201234A (en) * 1938-05-14 1940-05-21 Williams J H & Co Torque indicating wrench
US2205510A (en) * 1938-04-07 1940-06-25 Wolfram Karl Change-over torque measuring tool for several measuring ranges

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2205510A (en) * 1938-04-07 1940-06-25 Wolfram Karl Change-over torque measuring tool for several measuring ranges
US2201234A (en) * 1938-05-14 1940-05-21 Williams J H & Co Torque indicating wrench

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11446123B2 (en) 2017-03-15 2022-09-20 Ruetschi Technology Ag Medical instrument for torque control tightening a threaded implant device and packaging of the same
EP3527328A1 (en) * 2018-02-14 2019-08-21 Ruetschi Technology AG A disposable instrument for torque control tightening a threaded implant device
WO2019159034A1 (en) 2018-02-14 2019-08-22 Ruetschi Technology Ag A disposable instrument for torque control tightening a threaded implant device
US11173582B2 (en) 2018-02-14 2021-11-16 Ruetschi Technology Ag Disposable instrument for torque control tightening a threaded implant device
DE112019000796B4 (en) 2018-02-14 2023-06-15 Ruetschi Technology Ag Instrument for torque controlled tightening of a threaded device

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