US2775276A - Handle for screw drivers or the like - Google Patents

Handle for screw drivers or the like Download PDF

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Publication number
US2775276A
US2775276A US444540A US44454054A US2775276A US 2775276 A US2775276 A US 2775276A US 444540 A US444540 A US 444540A US 44454054 A US44454054 A US 44454054A US 2775276 A US2775276 A US 2775276A
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United States
Prior art keywords
handle
cap
flange
pin
counterbore
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Expired - Lifetime
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US444540A
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Albert G Rossner
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Individual
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Priority to US444540A priority Critical patent/US2775276A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25G—HANDLES FOR HAND IMPLEMENTS
    • B25G1/00—Handle constructions
    • B25G1/04—Handle constructions telescopic; extensible; sectional
    • B25G1/043—Handle constructions telescopic; extensible; sectional for screwdrivers, wrenches or spanners
    • B25G1/046—Handle constructions telescopic; extensible; sectional for screwdrivers, wrenches or spanners with free-turning section at end of handle remote from tool

Definitions

  • Claim. (Cl. 145-61)
  • the present invention relates to new and useful improvements in tool handles for use with screw driver and other tools where a turning movement is imparted to objects engaged by the tool.
  • An important object of the present invention is to provide a handle composed of a main tool turning portion and a cap portion at the rear end ofthe handle and which is engaged by the palm of the hand and remains stationary therein while the tool is being turned to enable the tool to be subjected to constant pressure by the hand of the person.
  • Another object of the invention is to provide novel pivotal connecting means for the cap portion of the handle and constructed to reduce friction during relative turning movement of one part of :the handle with respect to the other.
  • a still further object is to provide a tool of this character of simple and practical construction, which is effi cient and reliable in operation, relatively inexpensive to manufacture and otherwise well adapted for the purpose for which the same is intended.
  • Figure l is a perspective view
  • Figure 2 is an enlarged fragmentary longitudinal sec tional view taken on the line 2-2 of Figure 1;
  • Figure 3 is a group perspective view of the pivotal connecting means for the cap portion of the handle.
  • the numeral 5 designates the blade or shank portion of a screw driver to which a main handle portion 6 is rigidly secured.
  • the handle 6 may be of plastic or other suitable material.
  • the rear end portion of the main handle 6 is formed with a longitudinally extending bore 7 in which one end of a pivot pin or shaft 8 is secured with a pressed fit or otherwise suitably secured in a fixed position to the handle.
  • the other end of the shaft pin 8 projects rearwardly beyond the handle 6 and is provided with a conical diametrically enlarged head 9 to provide a shoulder 10 on a flange portion 11 and a conical tip 12.
  • a cap 13 is constructed of material similar to the main handle 6 and is formed with a bore 14 in which a buslr ing 15 is retained by a pressed fit or otherwise suitably secured in a fixed position in the cap.
  • the rear end of the bushing 15 is formed with a counterbore 16 to accommodate the flange 11 of the head 9 of the pin or 2,775,276 Patented Dec. 25, 1956 ice shaft 8 and with suflicient clearance to reduce friction to a minimum during rotation of the cap on the pin or shaft.
  • the rear end of the bore 14 is closed and is formed with a conical counterbore 17 to accommodate the conical tip 12 of the head 9 of the pin or shaft 8.
  • the counterbore 17 is constructed of sufiicient depth to provide clearance between the tip 12 and the counterbore so that contact of the head 9 with the counterbore 17 is limited to the shoulder 18 at the periphery of flange 11 and at the point where the tip 12 merges with the flange.
  • Clearance is also provided between the rear end of the handle 6 and the cap 13, as indicated at 19, to further reduce friction during the rotation of the cap.
  • the fingers of a person grip the main portion 6 of the handle while the palm of the hand bears against the cap 13. Accordingly, the main handle portion 6 and blade 5 are free to turn while the cap 13 remains stationary so that constant pressure may be subjected to the tool while the same is being turned.
  • a tool handle comprising a main handle part, a cap at the rear end of the main handle part, and means rotatably connecting the cap to the main handle part and including a pin having one end anchored axially in the main handle part and projecting rearwardly therefrom, .a diametrically enlarged flange on the rear end of the pin, said cap having a dead end bore in which the pin is received in a concealed position and said bore having an inwardly tapering counterbore at its dead end overlying the flange and in which the flange is received the surface of said tapered counterbore being arranged at an angle to the periphery of the flange and with the rear corner only of the flange in contact with the tapered surface of the counterbore to reduce the point of contact of the flange therewith to a minimum, and a bushing fixed in the bore of the cap and behind which the flange is positioned to retain the cap on the pin.

Description

. A. G. RossNER HANDLE FOR SCREW DRIVERS OR THE LIKE Filed July 20. 1954 Dec. 25, 1956 Albert 6. Rassner INVENTOR.
' 1 By gum only 5.
United States Patent HANDLE FOR SCREW DRIVERS OR THE LIKE 7 Albert G. Rossner, Westminster, Mass.
Application July 20, 1954, Serial No. 444,540
1 Claim. (Cl. 145-61) The present invention relates to new and useful improvements in tool handles for use with screw driver and other tools where a turning movement is imparted to objects engaged by the tool.
An important object of the present invention is to provide a handle composed of a main tool turning portion and a cap portion at the rear end ofthe handle and which is engaged by the palm of the hand and remains stationary therein while the tool is being turned to enable the tool to be subjected to constant pressure by the hand of the person.
Another object of the invention is to provide novel pivotal connecting means for the cap portion of the handle and constructed to reduce friction during relative turning movement of one part of :the handle with respect to the other.
A still further object is to provide a tool of this character of simple and practical construction, which is effi cient and reliable in operation, relatively inexpensive to manufacture and otherwise well adapted for the purpose for which the same is intended.
These together with other objects and advantages which will become subsequently apparent reside in the details of construction and operation as more fully hereinafter described and claimed, reference being had to the accompanying drawings forming a .part hereof, wherein like numerals refer to like parts throughout, and in which:
Figure l is a perspective view;
Figure 2 is an enlarged fragmentary longitudinal sec tional view taken on the line 2-2 of Figure 1; and
Figure 3 is a group perspective view of the pivotal connecting means for the cap portion of the handle.
Referring now to the drawing in detail wherein for the purpose of illustration I have disclosed a preferred embodiment of invention the numeral 5 designates the blade or shank portion of a screw driver to which a main handle portion 6 is rigidly secured. The handle 6 may be of plastic or other suitable material.
The rear end portion of the main handle 6 is formed with a longitudinally extending bore 7 in which one end of a pivot pin or shaft 8 is secured with a pressed fit or otherwise suitably secured in a fixed position to the handle. The other end of the shaft pin 8 projects rearwardly beyond the handle 6 and is provided with a conical diametrically enlarged head 9 to provide a shoulder 10 on a flange portion 11 and a conical tip 12.
A cap 13 is constructed of material similar to the main handle 6 and is formed with a bore 14 in which a buslr ing 15 is retained by a pressed fit or otherwise suitably secured in a fixed position in the cap. The rear end of the bushing 15 is formed with a counterbore 16 to accommodate the flange 11 of the head 9 of the pin or 2,775,276 Patented Dec. 25, 1956 ice shaft 8 and with suflicient clearance to reduce friction to a minimum during rotation of the cap on the pin or shaft.
The rear end of the bore 14 is closed and is formed with a conical counterbore 17 to accommodate the conical tip 12 of the head 9 of the pin or shaft 8. The counterbore 17 is constructed of sufiicient depth to provide clearance between the tip 12 and the counterbore so that contact of the head 9 with the counterbore 17 is limited to the shoulder 18 at the periphery of flange 11 and at the point where the tip 12 merges with the flange.
By reason of the reduced contacting area between the head 9 of the pin or shaft 8 and the counterbore 17 in the cap 13 friction is reduced to a minimum during rotation of the cap on the pin.
Clearance is also provided between the rear end of the handle 6 and the cap 13, as indicated at 19, to further reduce friction during the rotation of the cap.
In the operation of the device the fingers of a person grip the main portion 6 of the handle while the palm of the hand bears against the cap 13. Accordingly, the main handle portion 6 and blade 5 are free to turn while the cap 13 remains stationary so that constant pressure may be subjected to the tool while the same is being turned.
From the foregoing, the construction and operation of the device will be readily understood and further explanation is believed to be unnecessary. However, since numerous modifications and changes will readly occur to those skilled in the art, it is not desired to limit the invention to the exact construction shown and described, .and accordingly, all suitable modifications and equivalents may be resorted to, falling within the scope of the appended claim.
What is claimed as new is as follows:
A tool handle comprising a main handle part, a cap at the rear end of the main handle part, and means rotatably connecting the cap to the main handle part and including a pin having one end anchored axially in the main handle part and projecting rearwardly therefrom, .a diametrically enlarged flange on the rear end of the pin, said cap having a dead end bore in which the pin is received in a concealed position and said bore having an inwardly tapering counterbore at its dead end overlying the flange and in which the flange is received the surface of said tapered counterbore being arranged at an angle to the periphery of the flange and with the rear corner only of the flange in contact with the tapered surface of the counterbore to reduce the point of contact of the flange therewith to a minimum, and a bushing fixed in the bore of the cap and behind which the flange is positioned to retain the cap on the pin.
References Cited in the file of this patent UNITED STATES PATENTS 39,151 King July 7, 1863 139,876 Daboll June 17, 1873 470,687 Koelzer Mar. 15, 1892 1,643,901 Peterson Sept. 27, 1927 1,752,703 Simpson Apr. 1, 1930 2,324,839 Haumerson July 20, 1943 2,351,705 Prall June 20, 1944 2,564,356 Diand-a Aug. 14, 1951 FOREIGN PATENTS 620,451 Great Britain Mar. 24, 1949
US444540A 1954-07-20 1954-07-20 Handle for screw drivers or the like Expired - Lifetime US2775276A (en)

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US444540A US2775276A (en) 1954-07-20 1954-07-20 Handle for screw drivers or the like

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US444540A US2775276A (en) 1954-07-20 1954-07-20 Handle for screw drivers or the like

Publications (1)

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US2775276A true US2775276A (en) 1956-12-25

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Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3343577A (en) * 1966-08-08 1967-09-26 Watsco Inc Swivel top ratchet driver
US4093008A (en) * 1975-10-24 1978-06-06 Lino Martin Screw driver having capped handle with rotable cap
FR2603829A1 (en) * 1986-09-12 1988-03-18 Lupo Rocco Handle for a hand tool, especially a screwdriver, and method for manufacturing such a handle
US4763548A (en) * 1985-11-06 1988-08-16 Oswald Leibinger Gmbh Screwdriver, particularly for surgical purposes
US4819535A (en) * 1987-09-25 1989-04-11 Thomas Carroll M Glass cutting apparatus
US5349886A (en) * 1992-08-25 1994-09-27 Jin Soo W Hand screw driver
US5431075A (en) * 1994-03-31 1995-07-11 Jose A. Cruz Swivel head screwdriver
FR2735677A1 (en) * 1995-06-26 1996-12-27 Landanger Landos SCREWDRIVER AND SCREW ASSEMBLY FOR MAXILLO-FACIAL TYPE MICROSURGERY
WO2001074543A1 (en) * 2000-04-05 2001-10-11 Ofentavsek Tone Precision screw-driver with a rotary cap
US20030084759A1 (en) * 2001-11-05 2003-05-08 Piergiacomi Sud - S.R.L. Precision screwdriver
US20060231276A1 (en) * 2005-04-14 2006-10-19 Robinson Merle W Wire twisting driver tool
WO2009042160A1 (en) * 2007-09-24 2009-04-02 Surgivision, Inc. Surgical marking tools and methods for marking a patient
US20090229427A1 (en) * 2007-12-06 2009-09-17 Custom Spec Engineering, Inc. Screwdriver handle having removable rotating cap

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US39151A (en) * 1863-07-07 Improved bit-stock
US139876A (en) * 1873-06-17 Improvement in bit-stocks
US470687A (en) * 1892-03-15 Screw-driver
US1643901A (en) * 1925-08-08 1927-09-27 John N Peterson Socket wrench
US1752703A (en) * 1928-06-12 1930-04-01 Herbert E Simson Hand drill or screw driver
US2324839A (en) * 1941-02-12 1943-07-20 Clifford C Haumerson Tool handle
US2351705A (en) * 1942-12-09 1944-06-20 Prall Gustav Screw driver
GB620451A (en) * 1947-01-17 1949-03-24 John Joel Improvements in and relating to screwdrivers
US2564356A (en) * 1948-11-12 1951-08-14 Arthur E Dianda Handle for screw drivers and other hand tools

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US39151A (en) * 1863-07-07 Improved bit-stock
US139876A (en) * 1873-06-17 Improvement in bit-stocks
US470687A (en) * 1892-03-15 Screw-driver
US1643901A (en) * 1925-08-08 1927-09-27 John N Peterson Socket wrench
US1752703A (en) * 1928-06-12 1930-04-01 Herbert E Simson Hand drill or screw driver
US2324839A (en) * 1941-02-12 1943-07-20 Clifford C Haumerson Tool handle
US2351705A (en) * 1942-12-09 1944-06-20 Prall Gustav Screw driver
GB620451A (en) * 1947-01-17 1949-03-24 John Joel Improvements in and relating to screwdrivers
US2564356A (en) * 1948-11-12 1951-08-14 Arthur E Dianda Handle for screw drivers and other hand tools

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3343577A (en) * 1966-08-08 1967-09-26 Watsco Inc Swivel top ratchet driver
US4093008A (en) * 1975-10-24 1978-06-06 Lino Martin Screw driver having capped handle with rotable cap
US4763548A (en) * 1985-11-06 1988-08-16 Oswald Leibinger Gmbh Screwdriver, particularly for surgical purposes
FR2603829A1 (en) * 1986-09-12 1988-03-18 Lupo Rocco Handle for a hand tool, especially a screwdriver, and method for manufacturing such a handle
US4819535A (en) * 1987-09-25 1989-04-11 Thomas Carroll M Glass cutting apparatus
US5349886A (en) * 1992-08-25 1994-09-27 Jin Soo W Hand screw driver
US5431075A (en) * 1994-03-31 1995-07-11 Jose A. Cruz Swivel head screwdriver
FR2735677A1 (en) * 1995-06-26 1996-12-27 Landanger Landos SCREWDRIVER AND SCREW ASSEMBLY FOR MAXILLO-FACIAL TYPE MICROSURGERY
WO2001074543A1 (en) * 2000-04-05 2001-10-11 Ofentavsek Tone Precision screw-driver with a rotary cap
US20030084759A1 (en) * 2001-11-05 2003-05-08 Piergiacomi Sud - S.R.L. Precision screwdriver
US20060231276A1 (en) * 2005-04-14 2006-10-19 Robinson Merle W Wire twisting driver tool
US7662158B2 (en) * 2005-04-14 2010-02-16 Robinson Merle W Wire twisting driver tool
WO2009042160A1 (en) * 2007-09-24 2009-04-02 Surgivision, Inc. Surgical marking tools and methods for marking a patient
US20090099584A1 (en) * 2007-09-24 2009-04-16 Surgi-Vision, Inc. Surgical marking tools and methods for marking a patient
US8157828B2 (en) 2007-09-24 2012-04-17 MRI Interventions, Inc. Surgical marking tools and methods for marking a patient
US8460328B2 (en) 2007-09-24 2013-06-11 MRI Interventions, Inc. Surgical marking tools and methods for marking a patient
US20090229427A1 (en) * 2007-12-06 2009-09-17 Custom Spec Engineering, Inc. Screwdriver handle having removable rotating cap
US7958804B2 (en) 2007-12-06 2011-06-14 Custom Spec Engineering, Inc. Screwdriver handle having removable rotating cap

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