US192901A - Improvement in screw-drivers - Google Patents

Improvement in screw-drivers Download PDF

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Publication number
US192901A
US192901A US192901DA US192901A US 192901 A US192901 A US 192901A US 192901D A US192901D A US 192901DA US 192901 A US192901 A US 192901A
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Prior art keywords
screw
drivers
tweezers
improvement
driver
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Expired - Lifetime
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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
    • B25B23/02—Arrangements for handling screws or nuts
    • B25B23/08—Arrangements for handling screws or nuts for holding or positioning screw or nut prior to or during its rotation
    • B25B23/10—Arrangements for handling screws or nuts for holding or positioning screw or nut prior to or during its rotation using mechanical gripping means
    • B25B23/101—Arrangements for handling screws or nuts for holding or positioning screw or nut prior to or during its rotation using mechanical gripping means for hand-driven screw-drivers

Definitions

  • the invention has for its object to furnish a convenient device for removing and replacing small screws in jewelers or carpenters work, admitting thereby the driving in of screws into wood withontholes, and also the taking hold of screws for removing them when the thread in the wood is worked out.
  • the screwdriver may, however, be used with equal efficacy for wood or iron, and be arranged on the end of a bit-stock, or as a separate and neat tool.
  • the invention consists of a screw-driver having a sliding sleeve, with spring-jaws or tweezers extending over the end of the screwdriver, and being spread by a conical collar of the same back of the driving-edge.
  • A represents a screw-driver, that is either applied to a bit-stock or provided with a handle.
  • the lower curved ends of the tweezers are spread by a conical collar, a, of the stem, arranged a short distance back of the screw-driving edge, when the sleeveis carried forward toward the upper shoulder, a, so that the tweezers pass beyond the driving-edge and take hold of the head of the screw:
  • the main advantage consists in the convenient and expeditious holding and inserting of small screws for jewelers or car penters work by the tweezers, and the screwing in of the same by the screw-driver, the tweezers receding as the screw is turned in.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Adornments (AREA)

Description

A. :r. CURTIS.
SCREW-DRIVER.
" No. 192.901. Pafented Jul-3:10, 1877.
mamas.
N PETERS, FHOTO-LITHOGRAPHER, WASHINGTON, D C.
UNITED STATES PATENT OFF CE,
ANDREW J; oURTfs, oEMoNRoE, MAINE, Ass eNoR To HIMSELF AND EDMOND H. NEALLY, OF SAME PLACE.
IMPROVEMENT IN SCREW-DRIVERS.
Specification forming part of Letters Patent No. 192,902, dated July 10,1877 application filed June 4, 1877.
' To all whom it may concern:
Be it known that 1, ANDREW J. CURTIS, of
Monroe, in the county of Waldo and State of Maine, have invented a new and Improved Screw-Driver, of which the following is a specification The accompanying drawing represents a side elevation of my improved screw-driver.
The invention has for its object to furnish a convenient device for removing and replacing small screws in jewelers or carpenters work, admitting thereby the driving in of screws into wood withontholes, and also the taking hold of screws for removing them when the thread in the wood is worked out. The screwdriver, may, however, be used with equal efficacy for wood or iron, and be arranged on the end of a bit-stock, or as a separate and neat tool. A
The invention consists of a screw-driver having a sliding sleeve, with spring-jaws or tweezers extending over the end of the screwdriver, and being spread by a conical collar of the same back of the driving-edge.
In the drawing, A representsa screw-driver, that is either applied to a bit-stock or provided with a handle.
A sleeve, B, with springjaws G, that form tweezers, slides along the stem or shank of the screw-driver until forming contact with a collar, on, of the same. The lower curved ends of the tweezers are spread by a conical collar, a, of the stem, arranged a short distance back of the screw-driving edge, when the sleeveis carried forward toward the upper shoulder, a, so that the tweezers pass beyond the driving-edge and take hold of the head of the screw:
When the pressure on the sleeve is removed thetweezers slide back and clasp the screw, so as to admit the ready insertion of screws into soft wood without requiring holes, or the taking hold of the same, and removing them when turning loosely in the worked-out screwholes.
The main advantage, however, consists in the convenient and expeditious holding and inserting of small screws for jewelers or car penters work by the tweezers, and the screwing in of the same by the screw-driver, the tweezers receding as the screw is turned in.
Having thus described my invention, 1 claim as new and desire to secure by Letters Patent- A carpenters tool consisting of the screwdriver A, having conical collar a, shoulder a, sliding sleeve B, and tweezers 0,. all constructed and arranged as shown and described.
ANDREW JQOURTIS. Witnesses:
A. H. MAYO, H. B. GRANT.
US192901D Improvement in screw-drivers Expired - Lifetime US192901A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2490211A (en) * 1945-01-05 1949-12-06 Edward T Dausch Screw gripping screw driver
US2497256A (en) * 1945-06-07 1950-02-14 Parker Mfg Company Screw holder

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2490211A (en) * 1945-01-05 1949-12-06 Edward T Dausch Screw gripping screw driver
US2497256A (en) * 1945-06-07 1950-02-14 Parker Mfg Company Screw holder

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