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Publication numberUS1360500 A
Publication typeGrant
Publication dateNov 30, 1920
Filing dateJun 16, 1919
Priority dateJun 16, 1919
Publication numberUS 1360500 A, US 1360500A, US-A-1360500, US1360500 A, US1360500A
InventorsMichael Coll
Original AssigneeMichael Coll
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Screw-holding attachment for screwdrivers
US 1360500 A
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Description  (OCR text may contain errors)


1,360,500, Patented Nm 30, 1920.



Specification of Letters I'atent. Patented N 30 1920 Application filed June 1a, 1919. Serial No. 304,402.

To all who'mt't may concern:

Be it known that I, MwHAEnGoLL, a citizen of the United States, residing at New York, in the county of New York and State of New York, have invented certain new and useful Improvements in Screw-Holding At tachments for Screwdrivers; and I do declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in the art to which it appertains, to make and use the same.

My invention relates .to improvements in screw-holding attachments for screw-drivers.

The main object of the invention is to construct a simple and effective attachment of the abovementioned type which will enable the operator to readily insert screws in places difficult of access, such as cabinets,

clock-cases, electric fixtures, machinery, etc. Another object of the invention is to provide a screw-holding attachment of novel form which may be readily adapted for use" in connection with a screw-driver having either a cylindrical or square shank.

A further object of the invention is to construct a device of the above mentioned character which is strong, durable, practical and inexpensive'to manufacture.

A further object of the invention is to construct the attachment of elastic material, such as rubber, which will readily adapt itself to different size screws and screw-driver shanks.

Other objects and advantages of the invention will be apparent from the following description:

In the acompanying drawing forming a I part of this specification and in which like numerals are employed to designate like parts,

' Figure 1 is a side elevation of a screwdriver wit invention applied thereto.

Fig. 2 is a similar view, the attachment being shown in section.

Fig. 3 is a detailed longitudinal sectionalviewof my improvement.

Fig. 4; is an end view of the attachment. In the drawings, wherein for the purpose of illustration is shown a preferred embodiment of my invention, the numeral 4: designates the shank of a screw-driver having the usual tapered point and! handle 5.

The numeral 6 designates, as a whole, my improved screw-holding attachment which is preferably constructed of a high grade elastic rubber. As shown, the attachment is the screw-head.

As shown in the drawing, the device is preferably constructed with thickened portions 8 at the opposite ends thereof for the purpose of rein orcing or strengthening the engagement of it with the shank of the screwdriver and the screw. The narrow central portion, designated by the numeralv 9., is for the purpose of allowing one end of the rubber holder to flex laterally with respect to the other end, thus enabling the shank of the screw-driver to come into effective engagement with the head of the screw and also to permit the screw to be slightly angled with respect to the shank of the screw-driver. In operation, a screw 10 is forced into the lar e or outer end of the central passage 7 and t e rubber will frictionally engage and hold the screw tightly therein. The upper or inner end of the rubber holder 6 is now forced on the end of the screw-driver shank 4 in the manner shown in Fig. 2. It will be obvious that the holder being of a flexible material, will conform to the shape of the shank, and screw respectively. It will be noted that the central portion 9 will give or bulge sufficiently to enable the shank and screw to come into effective engagement with one another.

' It should also be noted that the attachment, due to the elasticity of the same, is

adapted to hold either machine or wood screws having different sized and shaped heads, thus being a substantial improvement over attachments of this general type heretofore used. I also wish to mention here, that the attachment not only fits different sized and shaped screws, but it also adapts itself to screw-drivers having various sized and shaped shanks, and it can be shifted longitudinally-theroon to properly bring the screw-driver shank and screw into effective engagement. i

t is understood that the form of my inwnlion herewith shown and described isto be taken as the preferred form of thesaxne, and that various changes in the shape, size, and arrangement of parts may be resorted to without departing from the spirit of the invention or the scope of the subjoined ('lail'n.

Having thus described my'invention, what I claim is- A screw holding attachment for a' screw driver comprising a tube of elastic'material havin its central passage tapering from its en s and havihg its intermediate portion of even diameter between the inner ends of the tapered portions, the tube having its walls reduced intermediate its length and at its ends to provide substantially spherical end portions with the tapered portions of the central pasage formed therein.

In testimony whereof I have hereunto set m hand.


Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2701491 *Jan 27, 1953Feb 8, 1955Ross James PInterchangeable wrench socket
US2723694 *Jan 23, 1953Nov 15, 1955Ross James PScrew driver attachment
US2788816 *Nov 2, 1953Apr 16, 1957Paul DargolsScrew-driving tool
US2985208 *Jul 23, 1954May 23, 1961Berry Franklin BDevice for holding screws, bolts and the like
US3177874 *May 19, 1960Apr 13, 1965Nylacore CorpContact lens applicator
US3245446 *Sep 19, 1963Apr 12, 1966Morifuji Haguruma Seisakusho KScrew driver with a screw holding device
US3517714 *Nov 3, 1967Jun 30, 1970Desbarats Edward WScrewdriver
US4221249 *Dec 28, 1978Sep 9, 1980Amerace CorporationScrewdriver attachment
US5065649 *Aug 21, 1990Nov 19, 1991Bulter Manufacturing CompanyDevice for holding fasteners
US6116125 *Mar 9, 1998Sep 12, 2000Mcleod; AlistairGripping accessory
US7287452 *Jul 17, 2006Oct 30, 2007Allen TsaiScrew fastener assembly
U.S. Classification81/458, 29/453, 29/450, 81/177.1, 279/158, 81/125
International ClassificationB25B23/10, B25B23/02
Cooperative ClassificationB25B23/101
European ClassificationB25B23/10B