US1369544A - Bushing extractor and inserter - Google Patents

Description

L. E. RENFRO.

BUSHl NG EXTRACT-OR AND INSERTER.

APPLICATION FILED SEPT. 2, 1919.

1,369,544. Patented Feb. 22, 1921.

UNITED STATES PATENT OFFICE.

LEONARD E. RENFRO, OF FORT WORTH, TEXAS.

BUSHING EXTRAGTOR AND INSER'IER.

Specification of Letters Patent.

Patented Feb. 22, 1921.

Application filed September 2, 1919. Serial No. 321,146.

To all whom it may concern Be it known that I, LEONARD E. RENFRO,

a citizen of the United States of America, residing at Fort Worth, in the county of Tarrant and State of Texas, have invented of various types, and the object is to,pro-.

vide an inexpensive tool which will be highly efiicient in extracting bearing sleeves or guiding sleeves and bushings, such as motor vehicle sleeves, sleeves for aeroplane motors, electric motor bearings, locomotive link pin bearings, brass sleeves of water pumps, and any kind of bearing, and also for inserting such bearings. Other objects and advantages will be fully explained in the following description and the inven tion will be more particularly pointed out in the claims.

Reference is had to the accompanying drawings which form a part of this application.

Figure 1 is a side elevation of the invention herein set forth, and a section of such devices on which the improved tool operates. Fig. 2 is an end view of the wickerhead. Fig. 3 is a side elevation of the same. Fig. 4 is a detail View of the spring which holds the wicker-head assembled. Fig. 5 is a side elevation of an extension for the mandrel or screw shaft. Fig. 6 illustrates a variation of the wicker-head expander. Fig. .7 illustrates a split washer to be used as shown in Fig. 6. Fig. 8 illustrates the tool used for inserting a bushing or bearing. Fig. 9 is a vertical section, showing a variation of the tool used as an inserter;

Similar characters of reference are used to indicate. the same parts throughout the several views.

This invention includes a threaded pull bar or mandrel 1 which has an expanding member 2 which terminates with a shouldered head 3. A wicker-head, consisting preferably of three segments 4., 5, and 6, is mounted on the pull rod 3. and operates on the expanding member '12. The wickerhead or gripping member i 5. and G, has an annular groove 7 and an open ring I spring 8 holds the parts i, 5, and 6 on the pull rod and permits the wicker-head to drop down on. the expanding member 5?. until the wicker-head comes in contact with. the inner wall of a sleeve 9 or bushing iich is held by the housing 10. The object the tapering form of the expander 2 is to make the parts 4i? 5, and ti the wickenhead grip the inner sleeve or bushing for removing the same. The wicl cer-head. is adapted for gripping purposes by cutting annular angular grooves in the periphery thereof and making relatively sharp edges 11 for gripping the inner wall of the sleeve or bushing to be removed.

The manner of using the tool for extracting purposes is shown in Fig. 1. The tool is adjusted over the sleeve and the tapering or expanding member is inserted. Then the wicker-head or gripping member is allowed to drop down on the expander till the gripping edges 11 engage the inner wall of the sleeve. A sleeve or spacing member 12 is then placed on the housing of the sleeve or bushing and a washer 13 is placed as a bearing on the support 12. A not 14 is then screwed down on the mandrel or pull bar 1 against the w: sher 13. This will draw or pull the sleeve 9 out of the housing 10. If a longer mandrel or pull be; i required,

an extension mandrel 15 may be provided and connected to the bar 1 by a coupling 15.

In order to prevent the wicker head 5 from droppingtoo tar down in the sleeve or bushing 9, annular grooves 17 may be out in the periphery of the expanding member 2 and split washers 18 inserted to stop the wiclrerdiead. The grooves 17 may be lo cated wherever needed.

For inserting a sleeve or bushing, the parts of the tool are reversed in action. Fig. 8 illustrates how the tool may be used for inserting a sleeve or bushing. The wickenhead 5 rests against the shoulder 3 and the washer 13 rests on the housing or other support. The upper end of wicker-head engages the sleeve or bus and the nut is, when turned. will draw wicker-head against the sleeve 9 and ii the same into the housing 10. Var modifications and applications of the improved tool may be made without departing from my invention. The tool 19 shown j lOO honiders and each 0 a different sized ei-xenon segments mounted on said pull-rod and provided with an annular groove in the peripher} thereof, a spring in said groove for holding said segments yielding-1y on said pull-rod, and a nut operating on the threaded portion of said pull-rod.

3. A sleeve extractor comprising an expandibie head, a pull-rod having a threaded portion and an expanding.portion and annular grooves in said expanding portion, carrying said head, a not operating on the threaded portion of said pull-rod, and split Washers carried in the said grooves for limiting the movement of said head on the expanding portion of said puihrod.

In testimony whereof I set my hand, this 25th day of August, 1919.

LEONARD n. RENFRO.

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