US385414A - Brace for screw-drivers - Google Patents

Description

` (NoMoae1.)

G. W. HUBER.

BRAGE `POB. SCREW DRIVERS, BITS, 688.

No. 885,414. Patented July 8, 1888.

WITNEssEs;

Y Z 7B jm Nv PETERS. Phalwliihngmphor. Waihnlian. D4 I24 GEORGE V. HUBER, OF PHILADELPHIA, PENNSYLVANIA.

BRACE Foa SCREW- DRIVERS, BITS, coo.

SPECIFICATION forming part of Letters` Patent No. 385,414, dated July 3, 1888.

Application filed October 10, 1887. Serial No. 251,914. (No model.)

.To all whom t may concern,.-

Be it known that I, GEORGE W. HUBER, a citizen of the United States, residing in the city and countyof Philadelphia, State of Pennsylvania, have invented a new and useful Improvement in Braces for Screw-Drivers, Bits, &c., which improvement is fully set forth in the following specification and accompanying drawings.

My invention relates to improvements in braces for screw-drivers, bits, Src.; and 1t consists in novel features of construction hereinafter disclosed, and particularly pointed out in the claims which follow this specification.

Figure l represents an elevation, partly in section, of my improved brace. Fig. 2 represents a vertical section showing the interior nut, the clutch, and connections. Fig. 3 represents a cross-section of Fig. 2 on linex fr. Fig. et represents a vertical section similar to Fig. 20k' a modified form of clutch. Fig. 5 represents a cross-section of Fig. 4 on line y y. Fig. 6 represents a vertical section through the lower parts of the brace, showing'the toolholdin g attachment. Fig. Trepresents a crosssection of Fig. 6 on line e z.

Similar letters of reference indicate corresponding parts in the several gures.

VReferring to the drawings, A is the body of the brace holdingthe toolin this instance a screw-driver, B. rllhis partis hollow to admit the insertion of the screw G, which latter carries a loose nut, N, adapted to turn freely on the screw as it is withdrawn by the agency of the handle H, the latter having a protectingsleeve, S, to protect the lingers from grease, dirt, Src., which may be on the screw.

In the upper end of the hollow tube A is a square hole, E, forming an integral partof this tube and adapted to receive the nut N, the lower extremity of which is also square, as shown in Fig. 3. rIhis nut slides freely iu a chamber in the upper end of the tube A, and

is provided with a washer, e, and spring t, which latter forces the square end of the nut into the hole E when the screw-rod Gis pushed inward; but this spring is sufficiently resilient to allow the withdrawal of the square head when the handle is pulled outward. The chamber containing this nut is closed at the top by a hollow plug, G, having a diametrical slot,

K, adapted to receive the central shoulder or projection, L, on the handle H, so as to connect the two parts into a rigid brace when they are interlocked.

Figs. 4 and 5 show a modified form of clutch in which the nut N has two extensions or arms, n a, adapted to take against the beveled lugs p p, having flat faces on one side and beveled surfaces on the other, to allow the arms n n to ride over them or to bear squarely against the fiat faces in a manner at once obvious. The arrangement of the other parts of the nut and its attachments is identically the same as those shown in Fig. 2.

In Figs. 6 and7 I have shown anattachment for holding the tool. It consists of a wire spring, fw, adaptedto fit in the groove g and across the slot g', and to takeA into a notch or groove, g2, in the corner of the tool, as clearly shown. The wire spring wis fixed at one end to the shank A, then bent around said shank in the groove g, and then bent and inserted in the deeper groove or slot, g', at the back of which latter there is a notch, gtin the shank ofthe tool. The free end of the wire is bent upwardly, as at g3, making a thumb-piece, whicli,\vhen not in use, rests in the groove g4 at a right angle to the slot g.

To remove the tool, one takes hold of the end K of the spring and lifts it until the notched end can be withdrawn.

The operation of the brace is as follows: On placing thescrew-drver on ascrew to be driven and taking the body A in one hand and the handle H in the other, the screw C is drawn out, and in the act of drawing it out the nut N is lifted from its socket or square hole E, or lugs a n, Figs. 3 and 5, and againstthe stress of springt; thus the nut turns freely on the screw. On reversing the motion the nut is forced quickly into the socket E, or behind the shoulderspp, Figs. 3 and 5, and caused to impart arotary motion to the part A, and hence the tool B. By this action the screw is quickly driven home. Should it be thought desirable to use the device as an ordinary handscrew brace, the screw O is thrust entirely home until shoulder L falls into notch or groove K, whereby a lock-joint is made between the two parts.

I am aware that it is not new with me to IOC Vhand-brace.

provide a hand-guard to a hand-brace to pro tect the hand from oil on the screw; nor is it new with me to provide means for locking the rotary and the Xed parts together to form a Neither is it new with me t-o provide a nut in which the spiralv works.

Having thus described my invention,what I claim as new, and desire to secure by Letters Patent, is

l; A hand-brace consisting of a tubular body portion, A, with an angular opening in the upper part ot' its bore, a nut having an angular lower portion adapted to fit in said angular opening, and a rounded upper part adapted to slide in said bore, a handle with the screw C working in the said nut, and a washer with aspring bearing against the said nut, said parts combined substantially as del scribed.

2. A hand-brace consisting of the tubular body portion A, with a portion of its bore of angular form,.a nut having a lower portion adapted to fit in said angular opening in the bore, and its upper portion adapted to slidein said bore, a plug, G, with slot K, the screw G, with handle H, having the shoulder L, the said screw working in said nut, and a Washer and spring bearing against said nut, said parts combined substantially as described.

3. In ahand-brace, the tubular body A, having a nut tted therein and a screw working and having a central shoulder and a tubular guard, a plug inserted'in the end of said body, and having a diametrical recess adapted to receive said shoulder, said parts being co1nbined substantially as and for the purpose set y forth.

5. A hand-brace having a tool-holder with peripheral groove g, the slot g', and a groove, g, at right angles to said slot, and the wire spring w, secured at one end to the holder and adapted to t in the groove g and across the slot g', and having a thumb-piece, the latter adapted to ,fit in said groove gt, said parts being combined substantially as and for the purf pose set forth.

y GEORGE W. HUBER. Witnesses:

THEO. C. WARNER, L. DoUvILLE.

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