US100757A - Improvement in screw-driver - Google Patents

Improvement in screw-driver Download PDF

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Publication number
US100757A
US100757A US100757DA US100757A US 100757 A US100757 A US 100757A US 100757D A US100757D A US 100757DA US 100757 A US100757 A US 100757A
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Prior art keywords
blade
driver
screw
handle
improvement
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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
    • B25B15/00—Screwdrivers

Definitions

  • the end of the i blade opposite from the point, contains a small recess to tit upon a nut or bolt-head, so that the conj trivauce can,'wl 1en.adjusted for the pocket, ⁇ be used i as a wrench for small nuts.
  • Figure 1 is a view of the flat sideof my invention adjusted for the pocket.
  • Figure 2 is a view of with the blade adjusted for use, and with a small porthe dat side of my intention j tion of the handle in section, showing the socket of' the blade. f.
  • Figure 3 is a viewof the flat side of the blade.
  • Figure 4 is an edgewise view of the handle.
  • Figure 5 is a viewof the socket end of the handle.
  • the letter indicates the metal handle, open in the center.
  • b is the blade. b, the screwdriver point of the blade, and b, the wrench end of the blade.
  • c is the wreneh'recess. Mare lugs upouthe side of the blade, which fit into proper recesses in the socket end of the handle.
  • the letter a indicates the socket end of the handle

Description

.ma eine.
- `Ltniins HART', or UNIONVILLE, CONNECTICUT;
Leners Patat No. 100,757, zama Marien 15, 1870.
IMPROVEMENT. IN SCREW-DRIVER.
The Schedule referred to in these Letters Patent and making parl: o! theame.
I, LEWIS HART, "of-.Unionville in the county of Hartford, and State of Gonueeti'cut have invented certain Improvements `in a Pocket Screw-Driver andV Wrench, of which the followingis a specification-f Nature and Objects of vthe Invention. My invention onsists in' a screw-driver so made that the blade can be taken outof the handle when adjusted fornse, its position reversed, and pushed up into the handle, so that the whole contrivance can be cairied readily in the. pocket. Also the end of the i blade, opposite from the point, contains a small recess to tit upon a nut or bolt-head, so that the conj trivauce can,'wl 1en.adjusted for the pocket, `be used i as a wrench for small nuts. f
Description of `iccofmpcmy'mg Drawings. Figure 1 is a view of the flat sideof my invention adjusted for the pocket. Figure 2 is a view of with the blade adjusted for use, and with a small porthe dat side of my intention j tion of the handle in section, showing the socket of' the blade. f.
Figure 3 is a viewof the flat side of the blade. Figure 4 is an edgewise view of the handle. Figure 5 is a viewof the socket end of the handle.
General Description.
The letter indicates the metal handle, open in the center.
b is the blade. b, the screwdriver point of the blade, and b, the wrench end of the blade.
c is the wreneh'recess. Mare lugs upouthe side of the blade, which fit into proper recesses in the socket end of the handle.
and the seetioning in fig. 2 shows just how tlie blade fits into its socket.
adjusted, as shown in iig. 1, it can be readily used as a wrench for small nuts, and that when adjusted, as shown in iig. 2, it can be used as a screw-driver.
The figures are of just the size of the instrument as heretofore made by me; of course other sizes can be made as well. rlhis instrument is designed mainly for use withv sewing-machines, and is an exceedingly handy implement.
Claims.
I claim as my inventiou- The combination of the handle a and blade b, oonstructed substantially as described furthe purpose set forth. Dated November 6, 1869. v
y LEWIS HART.`
Witnesses W. En. SIMoNns,
SAML. F. JONES.
The letter a indicates the socket end of the handle,
Itis readily obviousV that when the instrument is
US100757D Improvement in screw-driver Expired - Lifetime US100757A (en)

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US100757A true US100757A (en) 1870-03-15

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2625847A (en) * 1950-06-09 1953-01-20 Coleman T Frazier Coin-shaped bottle opener

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2625847A (en) * 1950-06-09 1953-01-20 Coleman T Frazier Coin-shaped bottle opener

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