US1901727A - Valve spring retainer tool - Google Patents

Description

March 14, 1933. c. W. BORLAND VALVE SPRING RETAINER TOOL Filed May 12, 1952 (IA/Bdrlan cl Qwi. "w l mug Patented Mar. 14, 1933 UNITED STATES :PATENT OFFICE CHARLES W. BURL AND, F HAYWOOD, ILLINOIS VALVE srame RETAINER 'roor.

Application filed May 12, 1932. Serial No. 610,947.

' An object of this invention is to provide a means to prevent the losing of the valve stem keepers during the removal or replacement of these keepers about the valve stem.

Another object of this invention is to provide a magnetic means which can be connected to a suitable source of current supply and which will not only facilitate the removal or replacement of the valve stem keepers but will also pick up the keepers in the event they drop into the vehicle engine, thereby eliminating the necessity of taking portions of the engine apart in order to obtain the keepers.

A further object of this invention is to provide a device of this kind which has adjustable means to adjust the degree of magnetism so that the device can be used to replace the valve stem keepers.

The above and various other objects and advantages of this invention will in part be described in and in part be understood from the following detailed description ,of the present preferred embodiment, the same being illustrated in theaccompanying drawing wherein:

Figure 1 is a longitudinal section partly in detail and partly broken away of a device constructed according to the preferred embodiment of this invention.

Figure 2 is a detail top plan view of one of the valve stem keeper supporting members having a keeper mounted therein.

Figure 3 is a similar view with the keeper removed from the attachment.

Figure 4 is a fragmentary top plan view of the guide member for guiding the device' toward the valve stem. 1

Figure 5 is a longitudinal section partly in detail of a further keeper attachment.

Figure 6 is a detail side elevation of an other attachment which can be mounted on the end of this device so as to remove keepers which may drop into the casing of the engine.

numerals of reference designate correspond: ing parts throughout the several views, the numeral 10 designates generally a handle, and the numeral 11 designates a sleeve or stem pro ecting forwardly of the handle 10. The stem 11 also has a shaft or rod 12 secured therein by means of a securing member 13 or the like, and the outer end of this rod 12 is provided with threads 14 to removably receive the inner end portion 15 of a keeper supporting member, generally designated as This keeper supporting member 16 comprises a shank or threaded member 15 engagmg the outer end of the rod 12, which rod 12 is preferably made of iron which is capable of being readily magnetized and the keeper supporting member 16 is preferably of relatively soft iron which is capable of being readily magnetized. The keeper supporting member 16 also includes a plate 17 which has a slot 18 therein to loosely receive the valve stem S. An upstanding rim or flange 19 is formed with the plate 17 and this flange 1 9 is of generally arcuate construction but is provided at the center thereof with a rearwardly curved portion 20, the purpose of which will be hereinafter described.

A valve stem keeper 21 is. adapted to engage about the reduced lower end portion 22 of the stem S and as shown in Figure 1,

the keeper 21 is adapted to seat on the plate 17 and is initially placed about the stem S by disposing the two portions of the keeper in substantially V-shaped form with the apex extending rearwardly or toward the curved or bulging portion 20.

A guide rod, generally designated as 23, is slidably mounted within the core or rod 12, which core is provided with a bore24= and the outer end of the guide member 23 is provided with a segmental tappet engaging member 25. The inner end of the guide member 23 has an enlarged head 26 carrying aspring 27 which holds the guide member 23 in longitudinally adjusted position within the bore 24. The guide member 23 is slidable through an opening 28 provided in the In order to magnetize the core 12 and the valve keeper supporting member 16, I have provided a coil 29 which is disposed about the-core 12, this coil 29 being formed of relatively fine Wire which is mounted within a casing 30. An end member 31 engages the outer end of the casing 30 and abuts against one end of the ,oil 29, and an inner end member 32 engages the inner end of the cylindrical casing or housing 30 and is secured about the core 12 in abutlng relation to the outer end of the sleeve 11.

A resistance coil 33 is mounted within the housing 30 intermediate the inner end of the coil 29 and the end member 32, and the outer end of this resistance coil 33 is separated from the coil 29 by means of a separating member 34 of non-conducting material. The coil 29 is provided with two conductors 35 and 36, which are adapted to be connected to a suitable source of current supply. The conductor 36 has a clip 37 secured to one end thereof and this one end extends axially through the handle 10 and is adapted to be connected to battery or other suitable source of current supply.

A spring pressed switch 38 is interposed inthe conductor 35 and this switch is normally in open position so as to break the circuit to the coil 29. A conductor 39 is connected at one end to one end of the resistance coil 33 and the opposite end is connected to the conductor 35 at a point beyond the switch 38. The other end of the resistance coil 33 is connected by means of a conductor 40 to the conductor 35 on the side of the switch nearest the coil 29 so that when the switch 38 is in its normal open position, the current from the source of supply will be shunted through the resistance coil 33 and into the coil 29, thereby reducing the power of the current'to ma netize the core 12. 1

When it is esired to remove a keeper 21 from about the valve stem S, the switch 38 may be closed, thereby cutting out the resistance coil 33 and magnetizing the core 12 to a higher degree' In this manner, the keeper 21 will be firmly held on the plate 17 and will be held thereupon notwithstanding movement of the supporting member 16 laterally relative to the stem S so that the two portions of the keepers will be firmly held on the plate 17.

The keeper supporting member 16a shown in Figure 5"is similar to the keeper 16 with the exception that the plate 17:]. is not provided with an upstanding rim. This attachmentor keeper supporting member 16a may be used to remove the keeper 21 from about the valve stem S. An elongated bar 41 of longitudinally curved configuration is provided with a nut 42 which threadably en gages the threaded end portion. 14 of the core 12, and this member is used where one or more portions of the keeper 21 drop into the engine casing or behind portions of the engine which cannot be readlly reached by fingers or removing tools. I

In the use and operation of this device, the conductors 35 and 36 may be connected to a battery or source of current supply through the clips 37 and 43. With the switch 38 in open position, the electric current will flow through the resistance unit 33 and into the coil 29, the resistance coil 33 reducing the magnetism of the core so that the tip 16 will be magnetized only to a small degree. When the valve spring is raised through the use of a valve spring compression tool 44 of conventional construction, the keeper 21 will drop onto the supporting tool 16 and the switch 38,may then be closed so as to shunt out the resistance coil 33 and magnetize the core '12 and the support 16 to a higher degree so that the handle 10 may be moved laterally of the stem S which will spread the keeper members 21 apart, but these members will be held on the support 16 by the power of the magnetism in the core 12 and the core extension or support 16.

In the placement of the keepers 21 about the valve stem S, the keepers may be placed on the support 16, as shown in Figure 2, being placed in substantially V shape. The guide 23 may be pulled outwardly to the limit provided by the enlarged stop portion or slide 26. The tappet engaging member 25 may then be engaged with the periphery of the tappet whereupon the handle 10 ma be moved inwardly, and through the use 0 this guide member 23, the keeper supporting member 16 will be guided in the correct position with respect to the peripheral groove 22 of the valve stem S so that the keepers 21 will properly engage about the valve stem. As the handle 10 is moved inwardly with the keepers 21 about the valve stem, the periphe of the stem will force the rear portion 0 the keepers into the notch 20 of the flange 19 which will serve as a means to compress or close the keepers about the valve stem S. The spring compressing tool 44 may then be released so as to permit the spring to force the valve spi ing washer 45 downwardly and close about the keeper 21.

It is, of course, understood that various changes and modifications may be made in the details of construction and design of the above specifically described embodiment of this invention without departing from the spirit thereof, such changes and modifications being restricted only by the scope of the following claims.

What is claimed is:

1. A device as described comprising a hanmember, a guide means below the member,

' handle,

and frictional means for maintaining the guide means in adjusted position relative to the handle.

2. A device as described comprising a handle, a keeper supporting member, means for magnetizing the member, means for varying the degree of magnetization of the member,

a guidemeans below the member and frictional means for maintaining the guide means in adjusted position relative to the handle.

3. A device as described comprising a handle, a valve stem keeper supporting member, means for securing the member to the handle, means for magnetizing the member whereby to removably hold the keeper on the member, a guide means below the member and frictional means for maintaining the guide means in adjusted position relative to the handle.

4. A device as described comprising a handle, a valve stem keeper supporting member, means for securing the member to the handle, means for magnetizing the member, guide means for guiding the member during the operation of replacing a valve stem keeper, and resilient means for holding the guide means in adjusted position.

5. A device as described comprising a handle, a valve stem keeper engaging member, means for securing the member to the handle, means for magnetizing the member, means for varying the degree of magnetization of the member, and slidable guide means for guiding the member toward a valve stem during the operation of replacing a keeper about the stem. p

6. A device as described comprising a.

handle, a valve stem keeper supporting memher, a core member secured to the handle and to the member, a coil about the core whereby to magnetize the core and the member, means for varying the degree of magnetization of the member and the core, a guide means in the core and means for frictionally holding the guide means in adjusted position within the core.

7. A device as described comprising a handle, a valve stem keeper supporting member, a core carried by the handle and engaging the member, a plurality of coils disposed about the core, means for selectively interposing the coils in an electric circuit to vary the degree of magnetization of the member, a guide means in the core and means for frictionally holding the guide means in adjusted position within the core.

8. A device as described comprising a a valve stem keeper supporting member, an iron core carried by the handle and engaging the member, a coil disposed about the core, conductors engaging the coil and adapted to be interposed in an electric circuit to energize the coil and magnetize the core and the member, a resistance means connected to the coil, means for shunting the resistance means whereby to vary the degree of magnetization of the member, a guide means in the core and means for frictionally holding the guide means in adjusted position within the core.

In testimony whereof I hereunto aflix my signature.

- CHARLES W. BORLAND.

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