US1381101A - Bushing-remover - Google Patents

Description

F.'0. ALBERTSONL BUSHING REMOVER.

APPLICATION FILED SEPT.30, I918.

PatentedJune 14, 1921..

UNITED STATES PATENT OFFICE.

IRAN S 0. ALBER'ISON, OF SIOUX CITY, IOWA, ASSIGNOR TO ALBERTSON & COMPANY, OF SIOUX CITY, IOWA, A CORPORATION OF IOWA.

BUSHING-REMOVER.

Specification of Letters Patent. Patented June 14, 1921,

Original application filed June 20, 1918, Serial No. 240,977. Divided and this application filed September 30, 1918. Serial No. 256,294.

1 '0 all whom. 12 may concern Be it known that I, FRANS O. ALnnRTsoN, formerly a subject of the King of Sweden, now a naturalized citizen of the United States, residing at Sioux City, in the county of lVoodbury and State of Iowa, have invented a certain new and useful Improvement in Bushing-Removers, of which the following is a full, clear, concise, and exact description, reference being had to the accompanying drawings, forming a part of this specification.

This invention relates'to bushing removers. The objects of the invention are:

First: to provide a simple and eflicient -means for removing bearing bushings from various pieces of apparatus;

Second: to provide means of the type described which, by requiring a minimum amount of tool steel, is comparatively economical to manufacture; and

Third: to provide means for removing bushings the parts of which function in a novel manner.

Other objects will appear as the description progresses, reference being had to the accompanying drawings, in which Figure 1 is a view partially in elevation and partially in section, showing my bushing remover in use for removing a bearing bushing from a blind bore in a port10n of a mechanical structure.

Fig. 2 is a side elevation of the tap mem-- ber of my bushing remover.

Fig. 3 is an end elevation thereof.

Fig. 4 is a transverse section, and

Fig. 5 is a view showing the method in which the wrench member is used for inserting the tap member in a bearing bushmg.

In the several views similar parts are represented by similar reference characters.

Referring to the drawings, the reference character 10 indicates a portion of a machine having a blind bore 11, that is, a bore the inner end of which is closed, for receiving and su porting a bearing-bushing 12. To remove bushings from supportlng boresof this character I member 13,shown in igs. '1 and 2, which is provided with a central bore 14 provided at its central portion with a screw thread 16.

One end of the tap member 13 is provided with a transverse slot 17.

I al o v de what wil for h Pu p rovide a tapered tap of convenience, be termed a wrenchmember wh1ch comprlses a shank 18 having an in termedlate screw threaded portion 19 and an impact end 20. The opposite end is provided with a cross bar or handle 21 for rotating the shank 18. In using my bushing remover for removing a bushing the tap member is first inserted in the bushing as far as it will go without rotating the same. The wrench member is then positioned, as indicated in tap member, as shown in Fig. 1. When the wrench member is then rotated in the proper directionthe screw threaded bore 19 will be threaded into the inner thread 16 of the tap member until the impact end 20' of, the

wrench member contacts with the bottom 22 of the alined bar 11. Further rotation of the wrench member will thereupon cause the bushing 12 to be lifted from the bore 11.

While I have described my improved bushing remover in connection with the removal of a bushing from an alined bore it is to be understood that it also can be used for removing bushings from bores extending entirely through a portion of an apparatus; This is accomplished by simply threading the wrench member through the tap' member until the impact end of the wrench member extends from the opposite end of the bore, whereupon by driving upon therebeyond a drift pin such as is disclosed in my co-pending application, Serial No. 240,97 7 filed June 20th, 1918, of which this application is a division, may be used to engage the impact end of the wrench member the bushing-to the tap member.

In constructing my improved bushing remover I make the tap member of tool steel and the wrench member of a cheaper grade of steel. By this means .1 am able to reduce the cost of manufacture of the bushing re-.

mover considerably.

and thus transmit the force for removing I While I have disclosed the preferred embodiment of my invention it is to be undering with the threaded bore and provided at one end with an impact surface, and a cross bar secured to the other end of said 00- acting member and adapted to enga e said slot without removal from said mem er.

2. A bushing remover comprising a threaded tap member having a longitudinal bore, screw threads in said bore, a jacksaid bore, and a co-acting screw provided at its central portion with screw threads for co-acting with the threads of said bore, said jack-screw provided with an impact surface at one end and provided near its other end with a cross bar, either end of said jack-screw being adapted to be received in said bore, and means at the large end of the tap member arrangedto co-act with the cross bar when that end of the jack-screw carr ing the cross bar is inserted in said bore, w ereby the cross bar may be used, not only as a handle for thejackscrew, but also as a handle wherewith to thread the tap member into a bushing.

In witness whereof, I hereunto subscribe my name this 24 dfiy of September, 1918.

- FRA S O. ALBERTSON. Witnesses:

ALVAH L. CHESEBRO, W. H. Coma.

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