US3561510A - Screwdriver with torque amplifying means - Google Patents
Screwdriver with torque amplifying means Download PDFInfo
- Publication number
- US3561510A US3561510A US766141A US3561510DA US3561510A US 3561510 A US3561510 A US 3561510A US 766141 A US766141 A US 766141A US 3561510D A US3561510D A US 3561510DA US 3561510 A US3561510 A US 3561510A
- Authority
- US
- United States
- Prior art keywords
- shank
- screw
- handle
- capstan
- bit
- 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
Links
- 239000002023 wood Substances 0.000 claims abstract description 4
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 210000000707 wrist Anatomy 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25G—HANDLES FOR HAND IMPLEMENTS
- B25G1/00—Handle constructions
- B25G1/005—Handle constructions for screwdrivers, wrenches or spanners with additional levers, e.g. for increasing torque
Definitions
- FIG. 1 is a side view of a conventional screwdriver with my invention applied thereto,
- FIG. 2 is a modified form of the invention
- FIG. 3 is a fragmentary sectional view taken in a central and vertical plane as taken from FIG. 2, and
- FIG. 4 is a sectional view taken along line 4-4 of FIG. 2 looking in direction of arrows.
- FIG. I of the accompanying drawing wherein my tool is shown as having a shank with a screw-engaging bit 11 at one end and a hand-accommodating handle 12 at its other end. Intermediate the ends of the shank 10 there is an enlarged integrally formed and cubicle capstan portion 13 with bores 14 extending therethrough and centrally of the shaft 10.
- the bores 10 of the cubicle portion 13 are of a size to accommodate a lever means or torque exerting bar 15 that will extend at different right angles to the axis of the shaft 10.
- the bar 15 has a handle 16 and at its extending end is formed with a screw-engagingbit 17 which may be employed to start a screw when its torque imparting portion is not required.
- the capstan portion 13 of the shaft 1 is here shown as of cubicle configuration, it will be understood that this capstan portion may be in the fonn of a cylindrical drum head with bores or sockets 14 for the bar or lever 15.
- FIG. 2 there is shown a modification of the invention in which the cubical capstan portion IS with its bar-accommodating bores 14 is located remote from the handle 12 and closely adjacent the screw bit-engaging end 11 of the shaft 10.
- the shank 10 instead of a conventional handle 12, is shown as having an integrally drop forged portion 18 which will function as a handle for the tool.
- FIG. 3 shows the bar or lever 15 as disposed at a right angle to the shank l0.
- FIG. 4 shows the cross-sectional configuration of the handle portion 18 of the modified form as in FIG. 2.
- a hand tool for setting wood and machine screws having an elongated shank with a screw-engaging bit at one end and an axially extending handle at its otherend, said shank having an enlarged capstan configuration formed integrally thereupon intermediate its bit and handle with a plurality of radially displaced and laterally extending bores through which a leverage-producing bar may be extended in different radially extending relationship with said screw-engaging bit, and a bar having an extending end projecting through one of the bores of said capstan by which increased torque may be imparted at different angles to said shank when applied to a screw.
- capstan is in the form of a cube with transversally extending bores upon said shank at a point removed from said handle and adjacent the screw bit engaging end thereof.
Abstract
A hand held screwdriver having a handle and an axially extending shank with screw engaging bit at its end and a drum head feature formed integrally upon the shank, as in a conventional ships capstan, having bar or lever accommodating sockets by which, when in use, increased torque or leverage is applied to the shank by an associated bar or lever means when setting or removing a wood screw that requires more force than can be exerted by the use of a present day screwdriver.
Description
United States Patent inventor Appl. No. Filed Patented SCREWDRIVER WITH TORQUE AMPLIFYING MEANS 2 Claims, 4 Drawing Figs.
US. Cl 145/50, 81/177 Int. Cl B25b 15/02 Field of Search l45/618, 61, 50; 8l/l77-3 References Cited UNITED STATES PATENTS 2,641,291 6/1953 Yess 145/61-8 r st L 32 2,870,809 H1959 Feldman et all. l45/6l--8 FOREIGN PATENTS 12/1920 Great Britain 145/50 748,121 6/1933 France 145/50 Primary ExaminerTheron E, Condon Assistant ExaminerRoscoe V. Parker, Jr. Attorney-W. Britton Moore SCREWDRIVER WITI-I TORQUE AMPLIFYING MEANS In the setting of the larger wood and machine screws there are often situations where the forces required to set a screw cannot be exerted through the wrist of a mechanic with a conventional handle and it is therefore a primary object of my invention to provide an improved form of screwdriver having a capstan configuration with which radially extending lever means may be used in a final screw-setting operation. Other objects and advantages will be in part pointed out hereinafter and in part evident from the following description taken in connection with the accompanying drawing wherein there is shown by way of illustration and not of limitation preferred forms of the invention.
In the drawing wherein like numerals refer to like parts:
FIG. 1, is a side view of a conventional screwdriver with my invention applied thereto,
FIG. 2, is a modified form of the invention,
FIG. 3, is a fragmentary sectional view taken in a central and vertical plane as taken from FIG. 2, and
FIG. 4, is a sectional view taken along line 4-4 of FIG. 2 looking in direction of arrows.
For a more detailed description of the invention, reference is now made to FIG. I of the accompanying drawing wherein my tool is shown as having a shank with a screw-engaging bit 11 at one end and a hand-accommodating handle 12 at its other end. Intermediate the ends of the shank 10 there is an enlarged integrally formed and cubicle capstan portion 13 with bores 14 extending therethrough and centrally of the shaft 10. The bores 10 of the cubicle portion 13 are of a size to accommodate a lever means or torque exerting bar 15 that will extend at different right angles to the axis of the shaft 10. In this showing the bar 15 has a handle 16 and at its extending end is formed with a screw-engagingbit 17 which may be employed to start a screw when its torque imparting portion is not required. While the capstan portion 13 of the shaft 1!) is here shown as of cubicle configuration, it will be understood that this capstan portion may be in the fonn of a cylindrical drum head with bores or sockets 14 for the bar or lever 15.
In FIG. 2 there is shown a modification of the invention in which the cubical capstan portion IS with its bar-accommodating bores 14 is located remote from the handle 12 and closely adjacent the screw bit-engaging end 11 of the shaft 10. In this instance, instead of a conventional handle 12, the shank 10 is shown as having an integrally drop forged portion 18 which will function as a handle for the tool.
FIG. 3 shows the bar or lever 15 as disposed at a right angle to the shank l0.
FIG. 4 shows the cross-sectional configuration of the handle portion 18 of the modified form as in FIG. 2.
While I have, for the sake of clearness and in order to disclose my invention so that the same can be readily understood, described and illustrated specific forms and arrangements, I desire to have it understood that all such changes as come within the scope of the appended claims are to be considered as part of this invention.
I claim:
l. A hand tool for setting wood and machine screws having an elongated shank with a screw-engaging bit at one end and an axially extending handle at its otherend, said shank having an enlarged capstan configuration formed integrally thereupon intermediate its bit and handle with a plurality of radially displaced and laterally extending bores through which a leverage-producing bar may be extended in different radially extending relationship with said screw-engaging bit, and a bar having an extending end projecting through one of the bores of said capstan by which increased torque may be imparted at different angles to said shank when applied to a screw.
2. The invention as set forth in claim I, characterized by the fact that said capstan is in the form of a cube with transversally extending bores upon said shank at a point removed from said handle and adjacent the screw bit engaging end thereof.
Claims (2)
1. A hand tool for setting wood and machine screws having an elongated shank with a screw-engaging bit at one end and an axially extending handle at its other end, said shank having an enlarged capstan configuration formed integrally thereupon intermediate its bit and handle with a plurality of radially displaced and laterally extending bores through which a leverageproducing bar may be extended in different radially extending relationship with said screw-engaging bit, and a bar having an extending end projecting through one of the bores of said capstan by which increased torque may be imparted at different angles to said shank when applied to a screw.
2. The invention as set forth in claim 1, characterized by the fact that said capstan is in the form of a cube with transversally extending bores upon said shank at a point removed from said handle and adjacent the screw bit-engaging end thereof.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US76614168A | 1968-10-09 | 1968-10-09 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3561510A true US3561510A (en) | 1971-02-09 |
Family
ID=25075535
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US766141A Expired - Lifetime US3561510A (en) | 1968-10-09 | 1968-10-09 | Screwdriver with torque amplifying means |
Country Status (1)
Country | Link |
---|---|
US (1) | US3561510A (en) |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4399723A (en) * | 1979-07-11 | 1983-08-23 | Gilles Marleau | Compact combination tool set |
US5193419A (en) * | 1992-06-15 | 1993-03-16 | Lee Chang Chuan | Wrench with telescopic handle |
US5370022A (en) * | 1993-05-25 | 1994-12-06 | Rodriguez; Orelio O. | Fastener driving leverage tool |
US5438894A (en) * | 1994-07-25 | 1995-08-08 | Pearce; Dan C. | Socket wrench extension |
US20040129119A1 (en) * | 2003-01-03 | 2004-07-08 | Clarke Gary Richard | Multiple purpose tool |
US20050112910A1 (en) * | 2002-04-10 | 2005-05-26 | International Business Machines Corporation | Method and apparatus to pre-form two or more integrated connectorless cables in the flexible sections of rigid-flex printed circuit boards |
US20050252348A1 (en) * | 2004-05-17 | 2005-11-17 | Ting Lin Y | Hand tool having adjustable assistant bar |
US20130296875A1 (en) * | 2010-11-12 | 2013-11-07 | Depuy (Ireland) | Pin impactor |
US20150183101A9 (en) * | 2012-09-17 | 2015-07-02 | Titan Product Development, Llc | Multipurpose Bicycle Tool |
US10376978B2 (en) * | 2015-11-13 | 2019-08-13 | The Boeing Company | Ergonomic handle |
US11273548B2 (en) * | 2018-06-04 | 2022-03-15 | New Revo Brand Group, Llc | Torque-assist |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB154715A (en) * | 1919-09-04 | 1920-12-06 | Alma Maud Mary Burn | An improved screw driver |
FR748121A (en) * | 1932-12-23 | 1933-06-29 | Forges Stephanoises Sa Des | Screwdriver manufacturing process and the resulting type of screwdriver |
US2641291A (en) * | 1947-11-06 | 1953-06-09 | Thomas R Yess | Ratchet clutch handle |
US2870809A (en) * | 1955-11-09 | 1959-01-27 | Feldman Herman | Tool handle |
-
1968
- 1968-10-09 US US766141A patent/US3561510A/en not_active Expired - Lifetime
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB154715A (en) * | 1919-09-04 | 1920-12-06 | Alma Maud Mary Burn | An improved screw driver |
FR748121A (en) * | 1932-12-23 | 1933-06-29 | Forges Stephanoises Sa Des | Screwdriver manufacturing process and the resulting type of screwdriver |
US2641291A (en) * | 1947-11-06 | 1953-06-09 | Thomas R Yess | Ratchet clutch handle |
US2870809A (en) * | 1955-11-09 | 1959-01-27 | Feldman Herman | Tool handle |
Cited By (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4399723A (en) * | 1979-07-11 | 1983-08-23 | Gilles Marleau | Compact combination tool set |
US5193419A (en) * | 1992-06-15 | 1993-03-16 | Lee Chang Chuan | Wrench with telescopic handle |
US5370022A (en) * | 1993-05-25 | 1994-12-06 | Rodriguez; Orelio O. | Fastener driving leverage tool |
US5438894A (en) * | 1994-07-25 | 1995-08-08 | Pearce; Dan C. | Socket wrench extension |
US7430799B2 (en) * | 2002-04-10 | 2008-10-07 | International Business Machines Corporation | Apparatus for deforming flexible cable sections extending between rigid printed circuit boards |
US20050112910A1 (en) * | 2002-04-10 | 2005-05-26 | International Business Machines Corporation | Method and apparatus to pre-form two or more integrated connectorless cables in the flexible sections of rigid-flex printed circuit boards |
US6922864B2 (en) | 2003-01-03 | 2005-08-02 | Gary Richard Clarke | Multiple purpose tool |
US20040129119A1 (en) * | 2003-01-03 | 2004-07-08 | Clarke Gary Richard | Multiple purpose tool |
US20050252348A1 (en) * | 2004-05-17 | 2005-11-17 | Ting Lin Y | Hand tool having adjustable assistant bar |
US20130296875A1 (en) * | 2010-11-12 | 2013-11-07 | Depuy (Ireland) | Pin impactor |
US9398929B2 (en) * | 2010-11-12 | 2016-07-26 | Depuy (Ireland) | Pin impactor |
US20150183101A9 (en) * | 2012-09-17 | 2015-07-02 | Titan Product Development, Llc | Multipurpose Bicycle Tool |
US9498870B2 (en) * | 2012-09-17 | 2016-11-22 | Titan Product Development, Llc | Multipurpose bicycle tool |
US10376978B2 (en) * | 2015-11-13 | 2019-08-13 | The Boeing Company | Ergonomic handle |
US11273548B2 (en) * | 2018-06-04 | 2022-03-15 | New Revo Brand Group, Llc | Torque-assist |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US3561510A (en) | Screwdriver with torque amplifying means | |
EP0216354B1 (en) | Different taper stud remover/installer | |
US4858504A (en) | Screwdriver with insulated shaft and polygonal driving head | |
US2820382A (en) | Tension-applying nut and bolt, and method and means of applying same | |
US2010616A (en) | Tool for rotating screws and other objects | |
US3508455A (en) | Combination tool | |
US2679778A (en) | Flexible rotary tool | |
US1371350A (en) | Wrench | |
US3104569A (en) | Stud bolt remover | |
US1571148A (en) | Wrench | |
US2257089A (en) | Stud driver | |
US3288185A (en) | Screwdriver construction | |
KR960703709A (en) | Tools for rotating rotatable fasteners, especially for loosening the rotatable fasteners, and for loosening and rotatable fasteners | |
US2983173A (en) | Open-end, slidable jaw face wrench | |
US2453840A (en) | Insert coil setting tool | |
GB935753A (en) | Sockets for use in manipulating nuts, bolts and the like | |
US3600984A (en) | Expansible allen setscrew wrench | |
US2392843A (en) | Insert securing tool | |
US1394438A (en) | Screwdriver | |
US2952178A (en) | Plier-type, article-holding wrench | |
GB913388A (en) | Improvements in or relating to screwdrivers and like tools | |
US2619862A (en) | Open-end wrench for pentagonal nuts, etc. | |
GB1042403A (en) | Improvements in or relating to spanners and the like | |
US3319676A (en) | Two-way screwdrivers and the like tools | |
GB876781A (en) | Improvements in screw-drivers |