US302067A

US302067A - Alfred d

Info

Publication number: US302067A
Authority: US
Publication date: 1884-07-15
Anticipated expiration: 1901-07-15

Description

(No Model) A. D. WALLEN.

SCREW DRIVER; No. 302,067. Patented July 15, 1-884.

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UNITED ST TE PATENT OFFICE.

ALFRED D. WALLEN, OF MENDHAM, NEW JERSEY.

SCREW-DRIVER.

SPECIFICATION fQrming part of Letters Patent No. 302,067, dated July 15, 1884.

Application filed December 12, 1883. (No model.) I I .To all whom it may concern:

Be it known that I, ALFRED D. WALLEN,

a citizen of the United States, residing at, Mendham, in the county of Morris and State The object of this invention -is to facilitate the manipulation and operation of ascrewtion and arrangement of the parts.

driver when driving a screw; and it consists, chiefly, in the structural arrangement and combination of parts hereinafter set forth, and finally embodied in thc'claims.

In the drawings, Figures 1 and 2 are eleva tions of a screw-driver embodying my im provement, the latter figure being partially in section, to show more clearly the construc- Fig. '3 is a section taken through. line a: of Fig. 2, and Fig. 4 is a detail view, similar letters of reference indicating corresponding parts in each of the several figures.

In carrying out myinvention, the shank A of the driver is made round, and carries a sleeve, 1), in which-said driver is adapted towork freely when driving a screw. Said sleeve is provided with lugs a," to which are pivoted, at a, jaws c, the latter having lugs d swaged or cast thereon for the purpose, as shown in Figs. 2 and 3. Secured to the handles of said jaws are flat springs e, the free ends of which pass between the lips Z and into grooves at the base of the lugs a, as clearly shown in Fig. 2, which serve toprevent any lateral movement or accidental displacement of said springs, as will be manifest.' The normal tendency of said springs is to press the ends of the jaws c, which engage with the screw, together, thereby enabling them to grasp a screw and hold the-same firmly in position, as will be readily understood by reference to Figs. 1 and 2. Said jaws c are provided with I said jaws steadily in their relative positions,

and to prevent a screw from being thrown out of line by an unequal pressure thereon by the jaws, which might result were the springs not of equal stiffness, as will be obviousn .The lipsl are provided with apertures i, Fig. 1, to facilitate theinsertio n of the rivets which hold the jaws 0 into connection with the sleeve b, and which also serve as th pivots on which said jaws work. The mode of operating the tool will be readily understood by reference to the drawings without further description.

I am aware that it is not new, broadly considered, to provide a screw-driver with a sleeve having spring-actuated clamping-jaws pivoted thereto, as such devices have been 'heretofore patented; but not to my knowledge have the springs in such cases been secured to the handles with their free ends extending between lugs, which prevent them dles of said jaws and extending between said lugs d, all arranged and operating for the purposes set forth.

2. The combination of the sleeve having lugs a, the jaws having lugs 61 and perforated 'lips Z, engaging with each other by means of tongues and grooves, as shown, and the springs e, secured tothe-handles of said jaws and pressing upon said sleeve, the several parts being arranged and operating as and for the purposesset forth.

In testimony that I claim the foregoing'I have hereunto set my hand this 20th day of November, 1883.

=ALFRED D. WALLEN.

Witnesses:

CHARLES H. PELL, F. F. CA PBEL