US1338495A - Bushing-remover - Google Patents

Description

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IIIIIIIIIIIIIIIIII PT.8, 1919. 1,338A95; j Patented Apr. 27, 1920.

portion of my device.

WALTER E. DONELSON, OF CONWAY, MASSACI-IUSETTS.

" BUSHING-REMOVER.

pecification of Letters Patent. Patentd' Apr. 27, 1920.

Application filed September 8, 1919. Serial No. 322,487.

To' all whom ?It may Concern:

Be it known that I, VVALTER E. DONELSON, a citizen of the United States, residing at Conway, in the County of- F'ranklin and State of Massachusetts, have invented certain new and useful Improvements in Bushing-Removers, of which the following is a specification.

This invention relates to improvementsin bushing removers.

An important object of the invention is to provide a device of the above mentioned character, simple in construction and cheap to manufacture.-

. A further object is to provide a device of the above character which may be used for removing bushings of different sizes, within a certain range.

A further Object is to produce such a device which may be used with a standard socket wrench or any of the adjustable wrenches now upon the market.

Other objects and advantages will appear throughout the course of the following discussion.

`tion of one end of the remover being shown in section for the purpose of elarity.

Fig. 2 is a section taken on a line 2 2 of Fig. 1, and

Fig. 3 is a Section taken through the bushing remover and shown enlarged to more clearly illustrate the peculiar construction of the teeth thereof. Referring now more particularly to the drawings, numeral 10 indicates the body This body portion as clearly shownin Fig. 1, is tapered throughout' its length and provided with longitudinal grooves 11 after the manner of under 'sides of the threads or the Sides adjaa tap. y

The exterior of the body portion is provided with screw threads 12 of the same depth throughout the body portion. These' threads, as vclearly shown in Fig. 3, are

the threads or the side remote from the entrance end of the 'remover being Substantially at right angles to the axis of the body portion as indicated at 13, while the cent the entrance end are inclined at an angle of approximately 45? to the axis as indicated at 14. The outer faces of the threads are not carried to a point as is usual in a finished tap thread, but are flattened in! the plane of the taper of the body portion,

`so as to give considerable surface upon the vided with squared shank 18 adapted to receive a wrench or the like. l

The operation of my device, is as follows: The remover is inserted into the bushing and screwed in until it attains a firm grip in the metal. Because of the peculiar construction of the threads, these threads while cutting into the metal have a tendency to bind and after the threads have attained a sufficient grip in the metal to remove the bushing, it becomes almost impossible to turn the remover by the use of an ordinary hand wrench. The squared upper surfaces v of the threads give a flat firm engagement against the metal of the bushing and there-` fore ,have a very solid grip when being driven.

the invention, I do not limit myself to Spe cific constructions herein shown and described, but may make any such changes without departing from the Spirit of the l' invention Or scope of the subjoined Claims.

\What I claim is: i

1. In a bushing remover a tapered body portion provided. with longitudinal slots, screw threads forme d upon Said body portion, saidthrads being of the same depth throughout the len th of 'Said body portion, the faces of said t reads remote from the As is well known the metal used P for bushings is generally bronze or brass and is consequently Very Soft, and if these,

entrance 'nd of said body portion being at substantially right angles to the axis v thereof.

' 'same 2. In a bushing remover. a tapered body portion provided with screw threads of the depth throughout the length thereof and having longitudinal clearance slots, the faces of Said threads remote from the entrance end of the body portion being Sub- Stantially at right angles to the axis of said body portion and the outer faces of said threads being provided With flattened surv faces parallel to the plane of taper of the jacent Said entrance end being inolined away from .said entrance end at an angle of approximately 45 to the aXiS of Said body portion and the outer faces of said threads being provided with flattened Surfaces par allel to the plane of taper of the body portion.

4. A bushing remover, comprising a tapered body portion'provided throughout itslength with threads of uniform depth, said body portion being provided "upon one endwith a driving face and upon the other end with a squared Shank, longitudinal slots formed in Said body portion, the faces of the threads upon Said body portion remote from the entrance end thereof being sub' Stantially at right angles to the axis of the body portion, the faces of the threads ad-.

jacent said entrance end being inclined away from said entrance end at an angle of approximately 45 to the aXiS of said body portion, and the outer faoes of said thread being provided with flattened Surfaces lying in a plane parallel to the plane of taper of Said body portion.

In testimony whereof I affix my Signature in presence of two witnesses.

` l WALTER E. DONELSON. Witnesses:

JOHN B. PACKARD, CHARLES PARSONS.

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