Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Screen reader users: click this link for accessible mode. Accessible mode has the same essential features but works better with your reader.


  1. Advanced Patent Search
Publication numberUS1539736 A
Publication typeGrant
Publication dateMay 26, 1925
Filing dateMar 5, 1923
Priority dateMar 5, 1923
Publication numberUS 1539736 A, US 1539736A, US-A-1539736, US1539736 A, US1539736A
InventorsSamuel Hearonemus
Original AssigneeSamuel Hearonemus
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Screw driver
US 1539736 A
Abstract  available in
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)

'- 1,539,736 s. HEARONEMUS S CREW DRIVER iled March 5, 1923 affozucl a Patented May 26, 1925.




Application filed March 5, 1923. Serial; No. 622,915.

1/ '0 all whom it may concern Be it known that I, SAMUEL HEARoNE- MUS, a citizen of the United States, residing at Snover, in the county of Sanilac and State of Michigan, have invented a new and useful Screw Driver, of which the following is a. specification.

This invention relates to screw drivers, and more particularly to the screw holding type in which the screw is lifted after being removed.

The object of the invention is to provide a simply constructed, cheap, strong device of this character which may be readily manipulated. v

\Vith the foregoing and other objects in view which will appear as the description proceeds, the invention resides in the combination and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed may be made within the scope of what is claimed without departing from the spirit of the invention.

In the accompanying drawings Figure 1 represents a side elevation of a screw driver constructed in accordance with this invention shown applied;

Fig. 2 is a similar view taken in a plane at right angles to Fig. 1; and

Fig. 3 is a transverse section through the body member of the tool.

In the embodiment illustrated, the tool constituting this invention comprises a body member 1 which is here shown cylindrical and of uniform diameter throughout, being provided at its front end with a screw engaging point or blade 2 and equipped in its opposite faces at a point spaced from said end with longitudinally extending grooves 8 and 4.

This body member 1 may be equipped with any suitable form of handle 5 composed of wood or other material.

The screw-holding device which constitutes a part of the invention comprises a sleeve 6 which encircles and is slidably mounted on the body 1 and is equipped with rearwardly extending longitudinal fingers 7 and 8 having inturned lips 9 at their rear ends which enter grooves 3 and 41 said grooves forming guides for said fingers and holding the sleeve against turning on the body 1.

This sleeve 6 is provided at its front end with longitudinally extending fingers 10 and 11 provided at their free ends with inturned lips 12 which engage the shoulders 13 formed at the base of the kerf-engaging blade 2 and limit the rearward movement of the sleeve.

A coiled spring 14: encircles the body 1 with one end engaging the fingers 7 and 8 and its other end secured to the member 1 in any suitable manner and exerts its tension to force the screw holder 6 backward so that when the lips 12 of the front fingers 10 and 11 are engaged with the beveled head H of the screw S, the screw will beheld between said lips and the blade 2 which is inserted in the kerf of the screw so that the screw may be lifted out when removed, and will be held by the screw driver until manually released.

In the use of this screw driver, the screw holding device 6 is moved forwardly against the tension of spring 14 a suflicient distance to operate the lips 12 of fingers 10 and 11 to receive between them and the blade 2 the. head H of the screw which is engaged by slipping these fingers sidewise over said head. The blade 2 is inserted in the kerf of the screw and the turning of the screw driver will operate to unscrew the screw, which may be lifted out of its socket by the holder 6. This tool may also be used for inserting a screw, it having been first engaged by slipping the leaves 12 over the head and screwing the screw into place.

Various changes in the form, shape, proportion and other minor details of construction may be made without departing from the principle or sacrificing any of the advantages of the claimed invention.

I claim A tool of the class described comprising a body member having diametrically opposite longitudinally extending grooves therein with a kerf-engaging blade at its front end having shoulders at its base, a screw holder in the form of a sleeve snugly fitting said body and slidable thereon and having rearwardly extending fingers with lips at their free ends engaging said grooves whereby the holder is held against turning on the body, and an intermediate olfset portion embracing a coiled spring on said body to hold the sleeve normally in retracted position, longitudinally extending fingers at the front of said sleeve, said fingers being in alinement with said first mentioned fingers and having inturned lips at their free ends to cooperate Withsaid. blades to c-lampingly clamp the head of the screw between them forming a three point screw holder, said lips engaging the shoulders at the base of said blade when the sleeve is in retracted position with the fingers fitting closely against the body member.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2859648 *Mar 15, 1955Nov 11, 1958Northrop Aircraft IncClamp tightener
US7766920 *Nov 12, 2004Aug 3, 2010Synthes Usa, LlcCannulated fastener system
US8282651Jul 1, 2010Oct 9, 2012Synthes Usa, LlcCannulated fastener system
U.S. Classification81/457
International ClassificationB25B23/10, B25B23/02
Cooperative ClassificationB25B23/101
European ClassificationB25B23/10B