US161056A - Improvement in screw-drivers - Google Patents
Improvement in screw-drivers Download PDFInfo
- Publication number
- US161056A US161056A US161056DA US161056A US 161056 A US161056 A US 161056A US 161056D A US161056D A US 161056DA US 161056 A US161056 A US 161056A
- Authority
- US
- United States
- Prior art keywords
- screw
- drivers
- improvement
- blade
- clamp
- 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
- 210000000088 Lip Anatomy 0.000 description 2
- 230000000875 corresponding Effects 0.000 description 2
- 230000036633 rest Effects 0.000 description 2
- 230000002441 reversible Effects 0.000 description 2
Images
Classifications
-
- 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
- B25B15/001—Screwdrivers characterised by material or shape of the tool bit
- B25B15/004—Screwdrivers characterised by material or shape of the tool bit characterised by cross-section
- B25B15/008—Allen-type keys
Definitions
- My invention is designed as an improvement upon those patented to me February 24:, 1874, numbered 147,785, November 24., 1874, numbered 157,102, and January 19, 1875, numbered 158,807 and consists in a novelconstruction and arrangement of the parts, as hereinafter more fully set forth and claimed, by which the simplicity and effectiveness of this class of screw-drivers are greatly enhanced.
- A represents the main blade of the driver, which is provided with the elongated slot B and hole J.
- a detachable or auxiliary blade, L Attached to the main blade by the set-screw I) there is a detachable or auxiliary blade, L, having a point at each end, and provided with a slot, B, corresponding with the slot B, for renderin g it adjustable longitudinally thereon.
- an adjustable clamp, E Sliding on the blade A there is an adjustable clamp, E, provided with a looking or fastening device consisting in part of the bar H, from one end of which a stud, I, projects inwardly' through a hole in the side of the clamp, the other end being provided with the long pin F working in holes in two flanges projecting from the edge of the same, as shown.
- a coiled spring, G one end of which presses against the flange nearest the bar H, and the other against a cross-pin (not shown) in the pin F.
- a lip or flange, K Projecting upwardly from the clamp E there is a lip or flange, K, forming a step or socket, in which the lower end of the blade L rests when in working position.
- This flange is made thinnest at its upper end, to render the socket thus formed flaring or tapering, so that as the auxiliary blade is crowded into it it will wedge and be held firmly in position.
- the clamp E is slipped along the body of the blade A until the stud I is forced into the hole J by the expansive action of the spring G.
- the blade L is then turned to bring forward the point which it is desired to use, the opposite point 7 being forced downwardly into the socket between the flange K and bladeA firmly secured together by the set-screw D.
- the improved screw-driver described consisting of the blade A, reversible blade L, screw D, and spring-clamp E, provided with the tapering flange K, all constructed and arranged to operate substantially as and for the purpose specified.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Toys (AREA)
- Knives (AREA)
Description
w. F. PATTERSON.
.s-crew-D-rivlerh THE GRAPHIC CO.PRUTO.-LITH.39& .4I PARK PLAGLN-Y.
No. 161,056 .Paten ted March23',1875.
UNITED STATES PATENT O FIo,
WILLIAM F. PATTERSON, OF BOSTON, MASSACHUSETTS.
IMPROVEMENT IN SCREW-DRIVERS.-
Specification forming part of Letters Patent No. 161,056, dated March 23, 1875; application filed February 20, 1875.
To all whom it may concern:
Be it known that 1, WILLIAM F. PATTER- soN, of Boston, in the county of Suffolk, State of Massachusetts, have invented a certain new and useful Improvement in Screw-Drivers, of which the following is a description sufficiently full, clear, and exact to enable any person skilled in the art or science to which my in vention appertains to make and use the same, reference being had to the accompanying drawing, forming a part of this specification, in which- Figure 1 is an isometrical perspective view.
My invention is designed as an improvement upon those patented to me February 24:, 1874, numbered 147,785, November 24., 1874, numbered 157,102, and January 19, 1875, numbered 158,807 and consists in a novelconstruction and arrangement of the parts, as hereinafter more fully set forth and claimed, by which the simplicity and effectiveness of this class of screw-drivers are greatly enhanced.
In the drawing, A represents the main blade of the driver, which is provided with the elongated slot B and hole J. Attached to the main blade by the set-screw I) there is a detachable or auxiliary blade, L, having a point at each end, and provided with a slot, B, corresponding with the slot B, for renderin g it adjustable longitudinally thereon. Sliding on the blade A there is an adjustable clamp, E, provided with a looking or fastening device consisting in part of the bar H, from one end of which a stud, I, projects inwardly' through a hole in the side of the clamp, the other end being provided with the long pin F working in holes in two flanges projecting from the edge of the same, as shown. Around the pin F there is a coiled spring, G, one end of which presses against the flange nearest the bar H, and the other against a cross-pin (not shown) in the pin F. Project ing upwardly from the clamp E there is a lip or flange, K, forming a step or socket, in which the lower end of the blade L rests when in working position. This flange is made thinnest at its upper end, to render the socket thus formed flaring or tapering, so that as the auxiliary blade is crowded into it it will wedge and be held firmly in position.
To adjust.the driver for use, the clamp E is slipped along the body of the blade A until the stud I is forced into the hole J by the expansive action of the spring G. The blade L is then turned to bring forward the point which it is desired to use, the opposite point 7 being forced downwardly into the socket between the flange K and bladeA firmly secured together by the set-screw D.
I do not herein claim anything shown or described in either of said Letters Patent when in and of itself considered; but 7 Having thus explained my invention, what I claim, is-
The improved screw-driver described, the same consisting of the blade A, reversible blade L, screw D, and spring-clamp E, provided with the tapering flange K, all constructed and arranged to operate substantially as and for the purpose specified.
WILLIAM F. PATTERSON.
Witnesses:
O. A. SHAW, H. E. METOALF.
Publications (1)
Publication Number | Publication Date |
---|---|
US161056A true US161056A (en) | 1875-03-23 |
Family
ID=2230465
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US161056D Expired - Lifetime US161056A (en) | Improvement in screw-drivers |
Country Status (1)
Country | Link |
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US (1) | US161056A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4590824A (en) * | 1984-11-21 | 1986-05-27 | Cloyd Cushman | Screwdriver |
-
0
- US US161056D patent/US161056A/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4590824A (en) * | 1984-11-21 | 1986-05-27 | Cloyd Cushman | Screwdriver |
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