US190459A - Improvement in screw-driver handles - Google Patents

Improvement in screw-driver handles Download PDF

Info

Publication number
US190459A
US190459A US190459DA US190459A US 190459 A US190459 A US 190459A US 190459D A US190459D A US 190459DA US 190459 A US190459 A US 190459A
Authority
US
United States
Prior art keywords
screw
improvement
handle
driver handles
driver
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
Publication date
Application granted granted Critical
Publication of US190459A publication Critical patent/US190459A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25G—HANDLES FOR HAND IMPLEMENTS
    • B25G1/00—Handle constructions
    • B25G1/10—Handle constructions characterised by material or shape
    • B25G1/105—Handle constructions characterised by material or shape for screwdrivers, wrenches or spanners
    • 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
    • Y10T74/00—Machine element or mechanism
    • Y10T74/20—Control lever and linkage systems
    • Y10T74/20576—Elements
    • Y10T74/20732—Handles

Definitions

  • WITNESSES mmwroa
  • Fig. 3 is an end View.
  • the knob at the upper end of the handle is made somewhat larger in diameter than is common, and is slabbed or flattened to form three practically equidistant sides, so that the shape in cross-section is substantially triangular, with a rounded surface interposed at each angle.
  • This handle is mainly intended for large screw-drivers, where the user needs to put forth considerable power.
  • This triangular knob fits naturally to the grasp of the hand, and afi'ords to the user the strongest possible gripe.
  • That the slabbed sides should be three in number is essential; for, as any one can satisfy himself by trial, three turns of the wrist-the part of the arm above the elbow remaining stationary-make one complete circle, so that a single twist of the wrist just sufiices to shift the grasp from point to point.
  • a screw-driver handle having an enlarged and round-ended head, provided with three flattened sides equidistant and equal-spaced,

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Surgical Instruments (AREA)
  • Professional, Industrial, Or Sporting Protective Garments (AREA)

Description

H. WILKINSON.
SCREW-DRIVER HANDLE. No. 190,459. Patented May 8,1877.
WITNESSES: mmwroa;
UNITED STATES PATENT OFFICE.
HENRY WILKINSON, OF COLLINSVILLE, CONNECTICUT.
IMPROVEMENT IN SCREW-DRIVER HANDLES.
Specification forming part of Letters Patent No. 190,459, dated May 8, 1877; application filed March 24, 1877.
View with the handle revolved just one-sixth of an entire rotation from the position shown in Fig. 1. Fig. 3 is an end View.
The knob at the upper end of the handle is made somewhat larger in diameter than is common, and is slabbed or flattened to form three practically equidistant sides, so that the shape in cross-section is substantially triangular, with a rounded surface interposed at each angle.
This simple change gives a marked increase of efficiency.
This handle is mainly intended for large screw-drivers, where the user needs to put forth considerable power. This triangular knob fits naturally to the grasp of the hand, and afi'ords to the user the strongest possible gripe.
That the slabbed sides should be three in number is essential; for, as any one can satisfy himself by trial, three turns of the wrist-the part of the arm above the elbow remaining stationary-make one complete circle, so that a single twist of the wrist just sufiices to shift the grasp from point to point.
Actual trial shows that the soreness of hand incident to continuous use of the common handle is obviated by the shape of handle herein shown and described.
I claim as my improvement- A screw-driver handle having an enlarged and round-ended head, provided with three flattened sides equidistant and equal-spaced,
as shown and described.
HENRY WILKINSON.
Witnesses:
W. E. SIMoNDs, RoBT. F. GAYLORD.
US190459D Improvement in screw-driver handles Expired - Lifetime US190459A (en)

Publications (1)

Publication Number Publication Date
US190459A true US190459A (en) 1877-05-08

Family

ID=2259866

Family Applications (1)

Application Number Title Priority Date Filing Date
US190459D Expired - Lifetime US190459A (en) Improvement in screw-driver handles

Country Status (1)

Country Link
US (1) US190459A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4002207A (en) * 1975-09-18 1977-01-11 Bartz Richard O Earthworking tool with handle having triangularly arranged sides
US4290465A (en) * 1979-10-17 1981-09-22 S/V Tool Company, Inc. Hand instrument
US6629338B2 (en) * 2000-01-19 2003-10-07 Adolf Wuerth Gmbh & Co. Kg Handle for a tool
USD800982S1 (en) * 2016-07-09 2017-10-24 Helen Of Troy Limited Sponge
USD823657S1 (en) * 2017-02-14 2018-07-24 Motion Pro, Inc. Gasket scraper
USD866766S1 (en) * 2015-12-23 2019-11-12 Power T Handle, Llc Pedicle screw torque driver

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4002207A (en) * 1975-09-18 1977-01-11 Bartz Richard O Earthworking tool with handle having triangularly arranged sides
US4290465A (en) * 1979-10-17 1981-09-22 S/V Tool Company, Inc. Hand instrument
US6629338B2 (en) * 2000-01-19 2003-10-07 Adolf Wuerth Gmbh & Co. Kg Handle for a tool
USD866766S1 (en) * 2015-12-23 2019-11-12 Power T Handle, Llc Pedicle screw torque driver
USD800982S1 (en) * 2016-07-09 2017-10-24 Helen Of Troy Limited Sponge
USD823657S1 (en) * 2017-02-14 2018-07-24 Motion Pro, Inc. Gasket scraper

Similar Documents

Publication Publication Date Title
US190459A (en) Improvement in screw-driver handles
US4922575A (en) Three ribbed torque handle
US4038719A (en) Handle for tools and sporting equipment
US6079298A (en) Ergonomic handle and driver incorporating same
US7836557B2 (en) Ergonomic garden trowel
US5711193A (en) Reversible ratcheting screwdriver with improved reversing ring
CN104942818B (en) Seven-freedom-degree five-finger mechanical arm
US5482072A (en) Versatile and universal handle
JPH04501682A (en) clutch mechanism
US3122774A (en) Handles
US4290465A (en) Hand instrument
US2464321A (en) Dental plate brush
US20170197300A1 (en) Hand tool adapter capable of increasing output torque or rotational speed
US375773A (en) Island
ES2363321T3 (en) REVERSIBLE RATCHET WITH DISTANCE INVESTMENT MANAGEMENT MECHANISM.
US20230233904A1 (en) Grip Exerciser
US20130145909A1 (en) Grip for a Tool Handle
US2352320A (en) Garden tool
TWI720933B (en) Palm tool driver set
US20160081503A1 (en) Utensil Holding and Turning Device
KR20170137296A (en) Secateurs
US1151829A (en) Metal nurling and ornamenting tool.
CN214724284U (en) Double-finger linkage displacement parallel clamping self-adaptive robot finger device
US20240181604A1 (en) Pliers
US706042A (en) Wrench.