US 1360500 A
Description (OCR text may contain errors)
T M. COLL. SCREW HOLDING ATTACHMENT FOR SCREWDRIVERS. APPLICATION FILED JUNE 16, 1919.
1,360,500, Patented Nm 30, 1920.
lvitmeao MICHAEL COLL, OF NEW YORK, N. Y.
SCREW-H O LDING ATTACHMENT FOR SCREWDRIVEBS.
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 h.my 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.
Q y MICHAEL COLL.