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Publication numberUS733126 A
Publication typeGrant
Publication dateJul 7, 1903
Filing dateSep 17, 1902
Priority dateSep 17, 1902
Publication numberUS 733126 A, US 733126A, US-A-733126, US733126 A, US733126A
InventorsCharles F Bellows
Original AssigneeCharles F Bellows
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
US 733126 A
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Description  (OCR text may contain errors)

. Patented July 7, 1903.




SPECIFICATION forming part of Letters Patent No. 733,126, dated July '7, 1903. Application filed September 17, 1902. Serial No. 123,739. (No model.)

To Cl/ZZ whom it may concern: I K

Be it known that 1, CHARLES F. BELLows, a citizen of the United States, and a resident of Brookline, in the county of Norfolk and 5 State of Massachusetts, have invented a new 1'0 screw-driver bits, countersinks, reamers, and

other handpieces, the object being to provide a holder of simple construction in which the tool or bit will be held in a chuck consisting of a permanent magnet, so thatwhile the tool is held sufficiently tight while working, either in inserting a screw or the like or removing a screw, it may be quickly and easily removed and another one substituted without the usual manipulation of a screwclutch.

I will describe a tool-holder embodying my.

invention and then point out the novel features in the appended claims.

Reference is to be had to the accompanying drawings, forming a part of this specification,

in which similar characters of reference indicate'corresponding parts in all the figures.

Figure 1 is asectional view of a tool-holder embodying my invention. Fig. 2 is a section 0 on the line 2 2 of Fig. 1, and Fig. 3 is a side view showing a slight modification.

Referring to the drawings, 1 designates the shank of the tool-holder connected to a handle 2, which has a chamber or chambers for 3 5 receiving various sizes of tools, and this handle is provided with a removable cover or end 8. On the end of the shank 1 is a slotted chuck forming fingers 4 5, between which the tool is designed to be held, and to form a 0 longand secure bearing for the tool the walls of the slot are parallel throughout their length. I have here indicated a screw-driver 6 as held between the members a and 5; but, as before stated, other forms of tools maybe These members 4 and 5 are of steel and are hardened to a sulhcient length and magnetized, so as to form a permanent magnet, it being understood that the tool is to be held in connection with the holder by magnetic attraction. ,In other words, the members 4t and 5 form opposite poles of a horseshoe-magnet.

To prevent the members 4 and 5 from spreading apart when the tool is in use, I surround them with a sleeve 7, made of new magnetic material-such, for instance, as Benedict nickel. To hold the sleeve in place, the members 4 and 5 are provided at the end with shoulders 8. Obviously by forcing the members together by any suitable means the sleeve may be readily passed over such shouL de'rs, and then upon releasing them they will spring outward to the position indicated in the drawings.

The device shown in Fig. 3is the same in all respects as the one above described, ex-

cepting in place of a handle 2 it is provided I with an angular end 9 for receiving a bitstock or the like.

It is obvious that a tool embodying my invention may be manufactured at a comparatively small cost and a great variety of tools or bits may be used in connection therewith, and therefore the time and trouble of changing from one tool to another is greatly reduced.

Having thus described my invention, I

claim as new and desire to secure by Letters Patent- 1. A tool-holder comprising a slotted head or chuck forming two poles of a permanent magnet, the walls of the slot being parallel throughout their length and between which the tool may be held.

2. A tool-holder comprising a slotted head or chuck, the members of which form the poles of a permanent magnet, the walls of the slot being parallel throughout their length and a sleeve of non-magnetic material, en

gaging around said members.

3. A tool-holder comprising a shank, spaced members extended from one end of the shank, the said members being magnetized, shoulders formed on the outer ends of said members, and a sleeve of non-magnetic material surrounding the members and engaging the said shoulders.

4. A tool-holder comprising two jaws shaped to receive a screw-driver, or the like, be-[ In testimony whereof I have signed my tween them, the said jaws being magnetized. name to this specification in the presence of 5. A tool-holder comprising two magnetic two subscribing Witnesses;

jaws shaped to receive a screw-driver, or the CHARLES F. BELLOWS. 5 like, between them and anon-magnetic sleeve Witnesses:

surrounding the jaws and terminating in- ALFRED W. DANA,

ward of the outer end thereof. LYNDE SULLIVAN.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2550775 *Jul 13, 1949May 1, 1951Wade StevensonMagnetic screw driver
US2609970 *Apr 20, 1948Sep 9, 1952Samuel S BlumsonCombined closure cap for closing the outlet spout and key for opening the filling plug of a liquid container
US2697642 *Sep 28, 1949Dec 21, 1954Rudy JeromeMagnetic handle connection
US4924733 *Dec 16, 1988May 15, 1990Mckenzie Archibald MMultiple bit screwdriver
US5145171 *Apr 10, 1991Sep 8, 1992Avon Industrial Polymers LimitedGrips for handles
Cooperative ClassificationB25B15/02, Y10S7/901