US1199010A - Firing-tool. - Google Patents

Description

F. c. KRAMER'.

FIRING TOOL.

APPLICATION FILED DEC. 7. ISI-I.

1 ,l 99,010. Patented Sept. 19,1916.

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NITED STATES VPAJIEll'l OFFICE.

FREDERICK C. KRAMER, OF CHICAGO, ILLINOIS.

'Frame-TOOL.

' Application filed December 7, 1914.

To all A1J/tom' t may concern Be it known that I, F nnoninon G. KRAMER, a `citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Firing-Tools; 'and I hereby declare thaty the following is a full, clear, and exact 4description thereof, reference being had to the accompanying drawings, which form part of this specification.

My invention relates to lire tools, and its object is to provide means for firmly clamping` a lire tool to its handle.

The invention is particularly designed for use in connection with slice bars or other iii-ing tool, which is provided with the properly formed socketed shank for the engagement of the handle as hereinafter' explained. By the invention the handle is securely attached to the tool by means of a split clamping ring adapted to slip over the handle and engage the tapered end of the socket in the shank of the fire tool, said split ring being forced inward by means of a sleeve adapted to slip onto the handle and o-ver the clamping ring and screw onto the threaded end of the shank, and as such sleeve is screwed on .the shank it forces the clamping ring into the socket and the tapered surfaces cause the ring to bind the handle tightly and efectually prevent the handle from working loose or unscrewing, and make a firm and rigid connection between the handle and tool.

I will explain the invention in detail with reference to the accompanying drawings in which it is illustrated in connection with an ordinary slice bar.

In said drawings: Figure l is a side View showing the means for attaching the handle to a firing tool. Fig. Q is an enlarged longitudinal sectional view through Fig. l. Fig. 3 is a transverse section on the line 3-3, Fig. 2. Figs. 4- and 5 are perspective views of the clamp member and sleeve detached.

The tool l is shown as a slice bar but may be of any desired construction, and is provided with a tubular shank 'li1 which may be internally threaded at its bottom as shown at lb for the engagement of the lower threaded end 4a of a handle 4, which is preferably made of rod steel or iron pipe and corresponds in exterior diameter with the interior diameter of the socket la, and has its inner end Lla threaded and engaged with the threaded portion lb of the socket ThuS.

Specification 0f Letters Patent.

Paeentedsepe-19, 191e.

Serial N0. 875,922.

far the construction is ordinary, and the objection to such ordinary construction is that the handle soon works loose, and the tool isthen 4apt to become disengaged or broken ofi' while in use, causing a great deal of trouble and annoyance to the operator. Various means have been tried to prevent turning ofthe-handle, 'such as screws tapped v th'roughthe socket'to engage the handle, but

they have all been more or less objectionablegeand it is quite desirable to have no proltuberance's on the socket or handle of the too In my invention vthe outer end of the shank la is externally reduced in diameter and threaded 'as Vindicated at 1, and the outer end of the socket in the shank is conically tapered as indicated at 1d. rlhis conical portion 1d is adapted to be engaged by a tapered split clamping ring 2 whose normal internal diameter corresponds to the handle 4 so that it can be slipped thereupon and its tapered end entered into the tapered porn tion ld of the socket. The clamping ring is preferably made of steel and' is longitudinally split as at 2, and its outer broader end 2 normally projects beyond the end of the shank l'L1 and is adapted to enter within an annular recess 5C in the end of a sleeve 5, which is adapted to be slipped upon the pipe 4 and neatly lits the same, except the recessed part 5C which is internally threaded, as shown, to engage the external threads on the part lC of the socket. The end 2a of the clamping member 2 engages the shoulder 5d at the inner end of the threaded part 5, so that when the sleeve 5 is screwed onto the shank the clamping member 2 will be forced inwardly into the tapered end l1 of the socket by the shoulder 5d engaging the end 2a as indicated in Fig. 2; and the tighter the sleeve 5 is screwed onto the shank the more forcibly the clamping ring is pressed into the recess of the socket 1d and the opposed tapered surfaces of the socket and clamping ring contract the latter upon the handle Al and securely clamp it. The clamping ring not only prevents turning of the handle in the tool but also forms an additional bearing between the shank and handle at the outer end of the socket, the handle having two rigid points of connection with the tool, z'. e., at the threaded end 4a and at the clamping ring 2.

The sleeve 5 is preferably made of steel and its outer end is tapered down as shown at 5, to approximately the diameter of the handle, and this prevents the tool from catching against the door frame or on other obstructions when the operator is Withdrawing the. tool from the lire.

While the invention is particularly adapted for firing tools, it could be usefully employed with other tools or implements.

By this invention the handle is clamped to the tool in a most efficient and durable manner and will not become loosened nor break when heated. The clamping ring is fully protected While in use, and if desired the invention can be used with a series of y interchangeable tools each provided With a socket corresponding to the socket la.

Havino' thus described my invention,

what l claim as nevi7 and desire to secure by to be slipped onto thehandle and into engagement with the internally tapered end of the socket; and a sleeve adapted I to be slipped onto the handle and over the said Vclamping ring and having an internally threaded recess adaptedy to engage the eX- ternally threaded portion of the shank, whereby when said sleeve 1s screwed onto the shank the said clamping ring is forced 1 into the `tapered portion ofthe socket andl caused tofsecurely clamp the handle.

In testimony that I claim the foregoing as my own, aliiX my signature in presence of two Witnesses.

FREDERICK C. KlFtAlVlERll Vitnesses LUCY M. BRENNER, GEO. GooDFELLoW.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents,` Washington, D. C.

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