US1759285A - Bushing removing and replacing tool - Google Patents

Description

y 1930- c. A. SEASE 1,759,285

BUSHING REMOVING AND REPLACING TOOL Filed April 24. 1928 Patented May 20, 1930 UNITED STATES PATENT oF'ncE CHESTER A. SEASE, OF HARRISBURG, PENNSYLVANIA, ASSIGNOR OF ONE-HALF TO PRESTON CROWELIJ, JR, HARRISBURG, PENNSYLVANIA BUSHING REMOVING AND REPLACING- TOOL Application filed April 24, 1928. Serial No. 272,501.

This invention relates to improvements in tools for removing and replacing bushings,

The primary object of this invention is the provision of an improved tool to facilitate the removal and replacing of bushings, particularly well adapted to avoid battering and distorting the bushing during the placement thereof.

A further object of this invention is the provision of an improved bushing removing and replacing tool,which includes detachable portions adapted to fit within the bushing and at an end of the bushing, and by means of which the bushing tool may be made available for driving bushings of various sizes.

, A further object of this invention is the provision of an improved bushing tool which will permit the driving of bushings into place, with facility; with the avoidance of poor fit and eccentricities. 7

Other objects and advantages of this invention will be apparent during the course of the following detailed description.

In the drawing, wherein for the purpose of illustration is shown only a preferred embodiment of this invention,

Figure 1 is a"per spective view of the improved tool.

Figure 2 shows the tool, partly'in section, operating on a bushing for placing the latter in a machine-part. Figure 3 is a view of the bushing tool with the-parts arranged to drive a relatively long bushing ina protected relation; the bushing being of a size smaller than that illustrated in Figure 2, and the parts of the tool being arranged accordingly.

Figure 4: is a side elevation of the tool asclamped relation by nut or pilot shaft means 13.

It is the preferred structure of the tool, that the same have a pair of annular discs or flanges thereabout, between the ends therei the bushing to act as a driver.- To this end i the driving post or handle 10 preferably comprises an elongated body l5,preferably,polygonal in cross section, having a reduced screw threaded shank 16 at one end thereof, and

providing an abrupt shoulder 17 at the juncture of the shank 16 with the body 15. With each tool it is preferred to provide a set of ring-shaped bushing operating discs 19, 20, 21, etc., each provided with an opening 22 therein, to permit the screw threaded shank to be freely slipped therethrough.

The means 13 preferably consists of an elongated pilot extension, having a screw threaded socket 25 inwardly from one end thereof adapted to receive the screw threaded shank 16 of the driver 10, and the end of which pilot extension 13 is adapted to engage against the operating discs or rings to clamp them firmly against the shoulder 17 in a rigid relation on the tool.

Assuming that a bushing B of a known internal and external diameter is to be driven into the opening 30 of a machine part B, a ring-shaped disc 19 is selected, the outer diameter of which is the same as the external diameter of the bushing B, and it is first placed upon the screw threaded shank 16 and moved thereon into abutment with the shoulder 17. A second disc 20 is then selected,

having an external diameter slightly less than the internal diameter of the bushing B, and it is placed upon the shank 16 and moved into abutment against the facing end of the disc or ring 19. The pilot nut 13 is then screw threaded upon the shank 16 into clamping engagement against,the disc 20, to clamp the discs-19 and 20 into a firm relation on the tool. I

end of the bushin an into the bushing, and the disc is moved into the end of the bushing o ening to protect the of course the mar- 'nal ortion of t e disc 19 which projects you the outer peri hery of the disc 20 abuts the end edge 0 the bushing B, to facilitate the drivm of the bushing in a manner which will Of course, the portion 20 protects t e bushing assageway from being battered, and avoids the necessity of reaming such as is sometimes required when driving bushings with ordinary tools. In this respect it is to be noted that the disc 19 may be referred to as a driving disc, ring, or flange or enlargement, and the disc 20 acts as a protecting flange, disc, ring, or enlargement.

In some. instances, thin or long bushings are rovided, such as the bushing D, shown in igure 3 of thedrawing. The bushing has been purposely shown smaller in diameter than the bushing B, in order to show the versatility of the tool A in its application to bushings of various sizes. Assuming the passageway in the bushing D is the next size smaller than the passageway in the bushing B, it is then necessary to replace the disc 19 with the disc 20; the latter now becoming the driving disc, and a smaller protecting disc 21 is then slipped upon the screw threaded shank and clamped in place, to act as a protector within the bushing D. Inasmuch as the bushing D is relatively long,-a plurality of discs 21 are placed upon the shank,16, and retained in spaced relation by a spacin'g sleeve 23, which is also shown in Figure 5 in end view; the spacing sleeve 23 being of smaller diameter than the internal diameter of the bushing B, and smaller in diameter than the external diameter of the protecting disc or ring 21.. The parts 20, 21 and 2 3 are maintained in a clamped relation upon the shank 16 and the tool A by means of the pilot nut 13, as is readily apparent from the draw- Irom the foregoing description of thisinvention it is apparent that a bushing remov ing and replacing tool has been provided, which enables an expeditious operation in the replacing or removing of bushings. The removing operation is of course accomplished by forcing the bushing thru the part on which it is placed, inasmuch as no part of the bushing tool is of a larger diameter than, the passageway through the part on which the bush ingis-mounted. In fact, it is preferred that both the driving and protecting discs be greater in diameter or cross dimension than any other section of any other part on the tool,-.includi'ng both the driver 10 and the pilot extension or nut 13. Of course the pilot extension 13 may be an ordinary nut if desired, but in the form shown it acts as a guide in placing the bushings in the machine e perfectly a parent.

to adjusta ly clagip said parts together, and.

a plurality of rel t1vel stepped discs of different sizes assembled upon the body and clamped in rigid relation thereon between and y said clamping parts, with the latter extending at opposite ends of the tool beyond said discs. f

2. In a bushing removin and replacing tool the combinatlon of an e ongated driver, a plurality of independent discs of different diameters, and means for detachably clamping the discs on the body in adjacent immovable relation thereon, whereby one of the discs may operate as a protector within an end of the bushing and the other disc operate as a driver against an end edge of the bushing.

3. In a bushin removing and replacing tool the combinatlon of an elongated driver detachable discs I of different diameters, an means for clampbody, a pair of relativ'el screwthrea ed shank against said shoulder,

and a nut on the screw threaded shank for adjustment againstth'e disc to detachably hold it rigid on the body.

5. In a bushing tool of the class described a body having a reduced screw threaded shank at an end thereof to provide a shoulder atthe juncture of the shank with the body, a rin -shaped disc received on said screw threa ed shank against said shoulder, a second annular disc smaller than and detachable of the first ring disc disposed on the screw threaded shank and in abutment with the first mentioned disc, and a nut in the screw threaded shank clamped against the second disc to hold said discs rigid on the body.

6. In a bushing removing and replacin tool the combination of a pair of elongate parts having a screw threaded connection with facing shoulders therebetween, and bushing driving and protecting discs clamped rigid between said shoulders.

8. In a bushing removing and replacing.

tool set the combination of an elongated driving body having a reduced screw threaded shank thereon, a nut for the screw threaded shank, aplu'rality. of ring-shaped discs of different sizes to be placed on the shank and clamped thereon by the 'nut, and a spacer sleeve for placement between said discs, on-

the shank,and of smaller diameter than the discs. tospace a plurality of discs of the same size from shank. v e

9. In a bushing removinguand replacing tool the combination of an elongated driver,

each other longitudinally of said a detachable driving flange on the driver, a

detachable protector of smaller diameter than the driving flange on the driver adjacent the driving flange, and means to hold said driving flange and protector in clamped assembled relation on the driver.

10. In a bushing removing and replacing tool the combination of an elongated driver, a detachable driving flange on the driver, a

' detachable protector of smaller diameter than the driving flange on the driver adjacent the driving flange, a second protector on the driver, means spacing the second protector from the first protector; and means to clamp the driving flange, the protectors and the spacer on the driver.

11. Abushing operating tool comprising.

an elongated body having a reduced screw threaded shank providing a shoulder, a ringshaped driving enlargement on the shank in abutment with said shoulder, a plurality of bushing protecting rings of ;the same external diameter on the shank/"a spacer sleeve between said protecting rings to hold them in spaced relation, the spacer sleeve being smaller in diameter than the protecting rings, an elongated pilot extension having a screw threaded socket to receive the screw threaded shank therein to clamp the driving enlargement above mentioned and the rings on the shank in a rigid assembled relation; 7

12. In a bushing tool the combination of an elongated body, an elongated pilot extension, means detachably connecting the pilot extension on the body in an axially aligning relation therewith, and means on the tool clamped rigid by and between the body and pilot extension comprising an annular part adapted to fit within the bushing at an end thereof and an annular part adapted to fit againstan end edge of the bushing to permit thedriving of the bushing.

CHESTER a. 'sEAsEQ

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