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Publication numberUS766270 A
Publication typeGrant
Publication dateAug 2, 1904
Filing dateMar 10, 1904
Priority dateMar 10, 1904
Publication numberUS 766270 A, US 766270A, US-A-766270, US766270 A, US766270A
InventorsStephen P Lapham
Original AssigneeStephen P Lapham
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Combined screw driver and holder.
US 766270 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

No. 766,270. PATENTED AUG. 2, 1904. S. P. LAPHAM.




ylepiwn, Flap/Lam Witnesse lmlentor. 5W 9 g y W I 7 I '7 I Attornegs STEPHEN P. LAPHAM,

Patented August 2, 1904.




SPECIFICATION forming part of Letters Patent No. 766,270, dated August 2, 1904:.

A licati fil d March 10,1904. Serial No. 197,445. (No model.)

1'0 (n71 whom it mwy concern:

Be it known that 1, S'rnrrmx P. LAPHAM, a citizen of the United States, residing at Pike, in the county of \Yyoming and State of New York, have invented a new and useful Combined Screw Driver and Holder, of which the following is a specification.

My invention relates to screw-drivers, and has for its objects to produce a comparatively simple inexpensive device of this character having means forengaging and securely holding a screw while being operated upon and to provide for locking said means in engaging position.

To these ends the invention comprises the novel features of construction and combination of partsmore fully hereinafterdescribed.

In the accompanying drawings, Figure 1 is a side elevation of my improved device. Fig. 2 is a longitudinal sectional elevation. Fig. 3 is a side elevation showing the driver projected beyond the clamping-jaws. Fig. i is a detail section on the line a a of Fig. 1.

Referring to the drawings, 1 designates the screwdriver handle, provided with a cylindrical portion or shank 2, having a central longitudinal opening or socket 3, designed to receive the inner end of the screw-driver shank 4, of which it forms, in effect, a continuation. The outer end of the shank at is flattened or otherwise formed, as at 5, for engagement with a screw, while the inner end of the shank 4, which enters the socket 3, is preferably of semicircular form in cross-section and has its flattened side engaged by the correspondingly-flattened portion of a pin 6, extended transversely through the handleshank 2, whereby the parts are detachably connected and held against relative rotation.

Surrounding the cylindrical portion or shank 2 and slidable longitudinally thereon is a tubular sleeve 7, provided at its forward end with a reduced tubular portion 8, adapted to surround the shank at of the screw-driver, the portion 8 being surrounded adjacent to its longitudinal center by a fixed collar 9, forward of which said tube is split to produce a pair of oppositely-disposed spring-jaws 10, constituting screw engaging and holding members or devices. The jaws 10, which are suitl ably and reversely bent adjacent to their outer or forward ends to produce a screw-head receiving space or socket 11, are provided in rear of said socket with a pair of cooperating fingers or elements 12, carried, respectively, by the jaws and in advance of the socket, with a pair of inwardly-extending cooperating screw-engaging portions 13 oppositely recessed to conjointly embrace the shank of a screw, the finger 12 of one jaw being extended transversely beyond that of the other, whereby the adjacent end of the driver in moving to engaging position as hereinafter explained will pass between them and serve to draw the jaws together for securely holding the screw.

Provided on the sleeve 7 is a suitable enlargement 15, through which a clampingscrew 16 is tapped with its inner end projecting into a longitudinal slot or seat 17, formed in the shank portion 2. The screw 16, which acts in conjunction with the ends of the slot 17 as an abutment for limiting the longitudinal movement of the sleeve upon the shank, may be manipulated for locking said parts against relative movement and, further, serves as a knob or projection for engagement by the operator in sliding the sleeve back and forth upon the shank 2, whereby the screw performs the threefold function of a stop member, a clamping or locking member, and an operating member for the sleeve.

In practice when it is desired to hold a screw for inserting the same the screw is manipulated to release the sleeve, which latter is then moved forward on the shank, thereby withdrawing the end 5 of the driver from between the screw-engaging portions of the jaws 10. The screw is then inserted between said jaws, and the sleeve is moved rearward on the shank, this action serving to project the driver forwardly between the lingers 12, thereby drawing the jaws together and causing the engaging portions 13 to snugly embrace the shank of the screw. After the end of the driver has been properly seated in the screw-head slot, the clam ping member or screw 16 may be manipulated for locking the sleeve against further movement on the shank, thereby securely holding the screw while being operated upon.

To remove a screw,'the

engaging end of the driver is projected beyond the engaging portions 13 of the jaws by moving the sleeve to its extreme rearward position upon the shank 2. After the screw has been sufliciently loosened the jaws may, if so desired, be engaged therewith in the manner just explained.

From the foregoing it is apparent that I produce a simple device which will admirably perform its functions; but it is to be understood that I do not limit myself to the precise details herein set forth, inasmuch as minor changes may be made Without departing from the spirit of the invention.

Having thus described the invention, what is claimed is 1. The combination with a screw-driver, of a pair of screw-engaging members carried thereby, said driver being adapted for longitudinal movement relative to the members, a pair of cooperating elements provided respectively on the members for engagement with the driver to move the members to screwretaining position, and means for locking the driver against movement.

2. The combination with a screw-driver having a shank, of a sleeve slidable longitudinally of the shank, a pair of screw-engaging members carried by the sleeve for longitudinal movement relative to the driver, means controlled by the movement of the latter for moving the members to screw-retaining position, and means for locking the sleeve against movement.

3. The combination with a screw-driver having a shank, of a sleeve slidable longitudinally of the shank, a pair of screw-engaging members carried by the sleeve for longitudinal movement relative to the driver, means controlled by the relative movement of the parts for moving the members to screwretaining position, abutments provided on the shank, and a locking device carried by the sleeve for locking the parts against relative movement, said device cooperating with the abutment to limit said movement of the parts.

I. The combination with a screw-driver having a shank and a handle, of a pair of cooperating screw-engaging members carried by and adapted for movement longitudinally of the shank, means controlled by the relative movements of the parts for moving the members to screw-retaining position, and an operating member disposed adjacent to the handle and operatively connected With the screw-engaging members for actuating the latter.

5. The combination With a screw driver having a shank and a handle, of a pair of STEPHEN P. LAPHAM.



Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2562347 *Aug 12, 1949Jul 31, 1951Young Louis EScrew holding screw driver
US8105367Jun 15, 2009Jan 31, 2012Smith & Nephew, Inc.Bone plate and bone plate assemblies including polyaxial fasteners
Cooperative ClassificationB25B23/101