US160543A - Improvement in screw-drivers - Google Patents
Improvement in screw-drivers Download PDFInfo
- Publication number
- US160543A US160543A US160543DA US160543A US 160543 A US160543 A US 160543A US 160543D A US160543D A US 160543DA US 160543 A US160543 A US 160543A
- Authority
- US
- United States
- Prior art keywords
- screw
- blade
- clamp
- improvement
- drivers
- 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
- 238000005452 bending Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000000875 corresponding Effects 0.000 description 2
- 210000001699 lower leg Anatomy 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
Definitions
- My invention relates to that class of screwdrivers which are provided with adjustable .f and detachable blades; and consists in a novel construction and arrangement ofthe parts, as hereinafter more fully set forth and claimed, as au improvement upon the patent granted to me February 24, 1874, No. 147,785.
- A represents the handle; B, the shank or fixed blade; Gr, the step; O, the clamp; E, the clamp-nut; and F, the auxiliary or adjustable blade.
- the step G is provided with a thumb-screw, H, and shoulder or ledge and is designed to rest upon a shoulderv formed on the main blade B, near the handle A.
- the clamp O has a central aperture, J, enablin g it to be passed over the blades F B very easily, and is provided with the tapering segmental wall-screws D K.
- the screw K is rigidly attached to the body of the clamp, and the screw D to the spring I, one end of which is secured to the clamp, and the other working freely in a slot through the side of the same.
- step G is rst passed over the blade B, and secured thereto by means of the screw H.
- the blade F is then adjusted upon the shoulder m, and both blades of the driver inserted in the aperture J of the clamp C, as shown in Fig. 2.
- the nut E is now turned onto the screws D K, bending the spring I, to which the screw D is attached. inwardly, as shown in Fig. 1, thus forcing it aga-inst the blades, and securing or clamping them together in a manner which will be readily understood without a more explicit description.
- step G may be adjusted so as to cause the blade F to project beyond the blade B, as required, and also that the loose blades may be easily reversed.
Description
UNITED STATES VPATENT OFFICE.
WILLIAM F. PATTERSON, OF BOSTON, MASSACHUSETTS.
IMPROVEMENT IN SCREW-DRIVERS.
Specification forming part of Letters Patent No. 160,543, dated March 9, 1875; application led December 15, 1874.
' ing, forming a part of this specification, in
which- Figure 1 isa vertical section showing the clamp, and Fig. 2 an isometrical perspective view.
Like letters of reference indicate corresponding parts in the different figures of the draw- Y ing.
My invention relates to that class of screwdrivers which are provided with adjustable .f and detachable blades; and consists in a novel construction and arrangement ofthe parts, as hereinafter more fully set forth and claimed, as au improvement upon the patent granted to me February 24, 1874, No. 147,785.
In the drawing, A represents the handle; B, the shank or fixed blade; Gr, the step; O, the clamp; E, the clamp-nut; and F, the auxiliary or adjustable blade. The step G is provided with a thumb-screw, H, and shoulder or ledge and is designed to rest upon a shoulderv formed on the main blade B, near the handle A. The clamp O has a central aperture, J, enablin g it to be passed over the blades F B very easily, and is provided with the tapering segmental wall-screws D K. The screw K is rigidly attached to the body of the clamp, and the screw D to the spring I, one end of which is secured to the clamp, and the other working freely in a slot through the side of the same.,
In using my improved screw-driver the step G is rst passed over the blade B, and secured thereto by means of the screw H. The blade F is then adjusted upon the shoulder m, and both blades of the driver inserted in the aperture J of the clamp C, as shown in Fig. 2. The nut E is now turned onto the screws D K, bending the spring I, to which the screw D is attached. inwardly, as shown in Fig. 1, thus forcing it aga-inst the blades, and securing or clamping them together in a manner which will be readily understood without a more explicit description.
It will be obvious that the step G may be adjusted so as to cause the blade F to project beyond the blade B, as required, and also that the loose blades may be easily reversed.
Having thus explained my invention, what I claim as my invention is- The screw-driver herein described, consisting of the blade B, adjustable step G, provided with screw H and shoulder x, reversible blade F, detachable clamp O, provided with the sectional screws D K and spring I, and the clampnut E, when constructed and arranged to operate substantially as and for the purpose specified.
VILLIAM F. PATTERSON.
Witnesses:
C. A. SHAW, H. E. METoALF.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US160543A true US160543A (en) | 1875-03-09 |
Family
ID=2229952
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US160543D Expired - Lifetime US160543A (en) | Improvement in screw-drivers |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US160543A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2578975A (en) * | 1948-11-01 | 1951-12-18 | James H Horne | Combination tappet wrench and feeler gauge |
| US2800672A (en) * | 1954-11-05 | 1957-07-30 | Gilyan Jess | Tool for plastering with means for selectively exposing a pair of work engaging edges |
-
0
- US US160543D patent/US160543A/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2578975A (en) * | 1948-11-01 | 1951-12-18 | James H Horne | Combination tappet wrench and feeler gauge |
| US2800672A (en) * | 1954-11-05 | 1957-07-30 | Gilyan Jess | Tool for plastering with means for selectively exposing a pair of work engaging edges |
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