US903549A - Screw-driver. - Google Patents

Description

C. V. DODD.

SCREW DRIVER.

APPLICATION FILED 111513.17, 1908.

903,549, Patented Nov. 10,1908.

CHARLES V. DODD, OF ELGIN, ILLINOIS.

SCREW-DRIVER.

Specification of Letters Patent.

Patented Nev. 1o, 190s.

Application filed February 17, 1908. Serial No. 416,222.

To all whom 'it may concern:

Be it known that l, CHARLES V. Donn, a citizen of the United States, residing at Elgin, county of Kane, and State of Illinois, have invented certain new and useful Improvements in Screw-Drivers, of which the following is a specification.

My invention relates to screw-drivers, and particularly to folding screw-drivers, that is to screw-drivers in which the blade is adapted to fold within the handle when not in use in order that the device may be readily carried in the pocket. 0

The object of my inventionfis to provide a folding screw-driver as mentioned having a plurality of blades each of a different size and arranged upon a single stud, the stud and the blades being so constructed and arranged that the desired blade may be locked in extended position by pushing the same a slight distance backwardly into the handle after having been brought into alinement therewith.

A further obj ect of my invention is to rovide a folding screwdriver characterize as mentioned and so arrangedv that all wear on the stud and the adjacent portions of the blade shall be taken up, to the end that the blade shall always remain rigid with the handle when in operative position.

Other objects will appear hereinafter.

My invention will be more readily understood by reference to the accompanying drawings formingy a part of this specifica- .tion and in which,

Figure 1 is a side view of a screw-driver embodying my invention, one of the blades being extended and locked in operative posi tion and the others being in a position to be used as a lever if necessary. Fig. 2 is an edge view of the screw-driver, one of the blades being in operative position and the others being folded within the handle. Fig.

3 is a side view of the device completely folded. Fig. 4 is .a detail section on the line ac of Fig. 2 illustrating the blade locking device. Figs. 5 and 6 are details of the stud.

Referring to the drawings 1 indicates the handle of the screw-driver. This is formed or stamped out of a single sheet of metal and then bent back upon itself as shown in Fig. 2 forming parallel throughout their len th. T-he ends of the walls 2 at the open en of the handle the side walls 2 which are,

are rounded as indicated at 3 and the handle is slightly tapered as shown making the closed end 4 somewhat broader than the open end to better protect the ends of the blades when in folded position, and especially when being carried in the pocket. The walls 2 at the open end of the handle are connected by a stud 5. This comprises the body portion 6 which extends through one side of the handle and the several blades, a head 7 and .a reduced portion 8 which extends through the opposite side of the handle and whichis upset forming a rivet. By reducing the portion 8 a shoulder 9 is formed which prevents binding the blades too tightly in the handle. The body portion 6 is substantially cylindrical with the opposite sides flattened as at 10, the sides 10 being angularly disposed or non-parallel and converging toward the open end of the handle.

Pivotally mounted on the stud 5' are a vplurality of blades 11, each preferably being of a different size, the end opposite the working edge of each being rounded as at 12 to conform to the end 3 of the handle when in folded position. Each blade is provided `with a tapered hole or aperture 13, to receive the stud 5, the taper thereof correspending with the angular disposition of the sides 10 of the stud, and the taper being toward the working edge of the blade. The larger end of the aperture 13 vis of' sufficient size to permit the blades to "swing freely on the stud and the taper of the stud and the aperture prevents the stud from entering the smaller end of the aperture except when the blade is extended 1n alinement with the.

handle, after which the desired blade may be pushed backwardly causing the studl to enter the narrower portion of the aperture, thereby locking the blade in operative position. The other blades may be folded within the handle or may be extended laterally as shown in Fig. 1 to serve as a lever if neces# sary. In constructing the device the aperture 13 is made somewhat longer than necessary in order that as the stud and the walls of the aperture become worn the wear may be taken up by the blade slipping a trifle further into the handle.

Having described my invention what I claim as new and desire to secure by Letters Patent is: j f

' 1. A foldin screw-driver comprising a handle forme of a single strip of metal bent back upon itself in combination with a stud connecting the open end of said handle and a blade pivotally ymounted on said stud, Said stud having a pair of angularly disposed faces convergingI toward the open end of the handle and said blade having an aperture to receive said stud, said aperture being' tapered to correspond to the faces of said stud when in operative position as and for the purpose specified. i

2. A folding 'screw-driver comprising a handle formed of a single strip of metal bent back upon'itself in combination with a `stud connecting the open end of the handle and a plurality of blades pivotally mounted opera-tive position when shoved backwardly ment with said handle.

3. A folding screw-driver comprising a handle formed of-a single strip of metal bent back upon itself forming parallel side the open end of said handle, and a plurality of blades pivotally mountedY on said stud, said stud having a pair of angularly disposed faces converging toward the open end ing an aperture to receive said stud,` said apertures being circular at one end and tapered therefrom toward the Working end of the blade to correspolul to the faces of said stud when .in operative. position, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

CHARLES V. DODD.

Witnesses:

E. L. NoL'rING, O'rro l HoEnETx-I.

'thereon after having been extended in aline- :Y

walls, in combination with a stud connecting of the handle, and each of said blades hav-

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