US1759175A - Valve holder and bushing ejector - Google Patents

Description

May 20, 1930. LE ROY VAUGHT VALVE HOLDER AND BUSHING EJECTOR Filed May 1O 1928' k? INVENTOR.

"3 Man/am A?) ATTORNEY Patented May 20, 1930 UNITED STATES PATENT OFFICE" I|E ROY VAUGHT, OF KANSAS CITY, MISSOURI, ASSIGNQR OI ONE-THIRD-TO ARCHIE C. GUY AND ONE-THIRD T WILLIAM E. GRIMMER, BOTH OF NORTH. KANSAS CITY,

MISSOURI VALVE HOLDER AND BUSHING EJEC'TOR Application filed May 10, 1928. Serial No. 276,662.

My invention relates to improvements in valve holders and bushing ejectors.

My invention is adapted for use in holding the stem of a valve properly positioned while the valve is bein ground to its seat.

One of the Ob ects of my invention is to provide a novel valve holder of the kind described, which can be used for easily ejecting a valve guide bushing that is tightly stuck in the cylinder block, and which after such ejection can be inserted in the block in place of the ejected bushing to be used as a holder or guide for the stem of the valve which at the time is to be ground to its seat.

A further object of my invention is to provide a novel holder of the kind described which has means for catching and holding grit, carbon and grinding compounds which become loosened during the grinding operation.

Still another object of my invention is to provide novel means cooperating with the cylinder block to properly position the valve while the valve is being ground to its seat,

and which holding means is simple, cheap, durable, strong, not likely to get out of order, which can be easily and quickly applied to cylinder blocks to which it is adapted, and which is eflicient in its operation.

The novel features of my invention are hereinafter fully described and claimed.

In the accompanying drawings, which illustrate the preferred embodiment of my invention,

Fig. 1 is a View, partly in vertical section and partly in side elevation of a portion'of a cylinder block and one of valves and parts connected therewith, of a type of engine with which my improved valve holder and ejector is adapted for use.

Fig. 2 is a similar view, showing my improved holder mounted on the valve stem, and the spring removed.

Fig. 3 is an enlarged section on the line 33 of Fig. 2.

Fig. 4 is an inside elevation of one of the holder members.

Fig. 5 is an inside elevation of the othe 50 holder member.

Fig. 6 is a perspective view, reduced, of my improved holder.

Similar reference characters designate similar parts in the different views.

My improved valve holder, in its preferred form, comprises two longitudinal separable half members 1 and 2, which are adapted to be fitted together upon a stem 3 of a valve, the head 4 of which is to be ground to its seat 5 in a cylinder block 6.

The cylinder block has the usual valve chamber 7 with which communicates the upper end of a hole 8, which is concentric with and below the valve seat 5. In the type of engine with which my invention is adapted for use, there is mounted in the hole 8 a longitudinally split valve guide bushing 9 in which the valve stem 3 is slidable in the operation of the engine.

In this type of engine, the valve is held seated by a coil spring, the lower end of which bears on a transversely removable collar 11 which rests on the enlarged lower end of the valve stem 3, the upper end of the spring bearing against two cooperating flanges 12 on the split bushing, said flanges hearing at their upper sides against the cylinder block 6.

When the valve is to be ground the spring 10 is removed, as is the split bushing 9, to prevent carbon and grinding .material or metal particles getting into the bushing during the grindin operation.

The split bus ing 9 often becomes tightly stuck in the cylinder block, and by reason of its location it is diflicult to remove it from the block.

In the use of my invention, the collar 11 and spring 10 are removed in the usual known manner, after which the valve is raised to the position shown in Fig. 2 in solid lines.

The members 1 and 2 are then fitted on the stem 3, by inserting them through the valve opening and seat, so that the lower ends of the members "1 and 2 will rest on the top of the bushing 9. In order that this may be effected, the bore-of the holder conforms in diameter to the diameter of the valve stem, and to hold the two members from falling apart while in the elevated position shown in solid lines in Fig. 2, the upper end of the holder is provided with a head, one half of which, designated by 13, is at the upper end of the half member 1, and the other half 14 of which is at the top of the member 2. The portion 13 of the head is provided with two slightly resilient pins 15, which are split at their outer ends, and which project transversely from the inner side of the member 1. The member 2 is provided in its head portion 14 with two transverse holes 16 into which the pins 15 are adapted to be inserted, and in such insertion, the split ends of the pins are slightly pressed toward each other by the member 2, thereby releasably holding the members 1 and 2 together on the valve stem 3 prior to the members being forced downwardly into the hole 8.

After the members 1 and 2 have been mounted on the raised valve stem 3, the valve is forced downwardly by pressure applied to the upper end thereof, thus eausin the members 1 and 2 to force the bushing 9 ownwardly to the position shown in dotted lines in Fig. 2 at which time the valve will rest on the seat 5. The bushing 9 will now drop from the hole 8, or if not, as it has been loosened, it may be readily pulled downwardly out of the hole 8, upon which, the members 1 and 2 will drop into the hole 8 until the head portions 13 and 14 rest on the block 6.

The valve may now be ground to its seat 5, the holder members 1 and 2 serving as a holder to retain the valve stem 3 properly positioned during the grinding operation.

To catch the loosened carbon, metal particles and grinding material falling from the seat during the grinding operation, and to prevent this matter getting into the hole 8, the upper ends of the members 1 and 2 are each provided with a depression 17, which depressions cooperate to form at the upper ends of said members a cupped upper end for the valve stem holder. The head of the holder thus effects the double function of limiting the downward movement in the hole 8 of the holder and that of catching material falling from the seat as the valve is ground to the seat.

I do not limit my invention to the struc tureshown and described, as many modifications, within the scope of the appended claims may be made without departing from the spirit of my invention.

Vhat I claim is 1. In means for holding a valve while it is being ground to its seat in a cylinder block having a valve chamber, a valve seat and a hole concentric with said seat communicating with said chamber and adapted to have fitted therein a valve guide bushing. said valve holding means consisting in a tubular holder adapted to have slidably and rotatably fitted therein the stem of a valve which is being ground in said seat, and insertible through said seat and chamber into and fitted to said hole and having within said chamber a head cupped in its upper end and of greater diameter than said hole.

2. In means for holding a valve while it is being ground to its seat in a cylinder block having a valve chamber, a valve seat and a hole concentric with said seat and communicating with said chamber and adapted to have fitted therein a valve guide bushing, said valve holding means consisting in a tubular holder adapted to have slidably and rotatably fitted therein the stem of a valve which is being ground in said seat, and insertible through said seat and chamber into and fitted to said hole and having Within said chamber a head of greater diameter than said hole, said holder comprising two longitudinal separable half members.

3. In. means for holding a valve while it is being ground to its seat in a cylinder block having a valve chamber, a valve seat and a hole concentric with said seat and communicating with said chamber and adapted to have fitted therein a valve guide bushing, said valve holding means consisting in a tubular holder adapted to have slidably and rotatably fitted therein the stem of a valve which is being ground in said seat, and insertible through said seat and chamber into and fitted to said hole and having in said chamber a head cupped in its upper end and of greater diameter than said hole, said holder comprising two longitudinal separable half members having means for releasably holding them together upon said valve stem prior to their insertion into said hole.

4. A valve holder of the kind described adapted to be removably fitted in a hole in a cylinder block, which hole is concentric with a valve seat and communicates with the valve chamber, said holder having a bore in which the stem of a valve which is being ground to said seat is adapted to be slidably and rotatably fitted, said holder having at its upper end a head cupped in its upper end and of greater diameter than the portion of the holder which is fitted to said hole, said holder comprising two longitudinal separable half members.

5. A valve holder of the kind described comprisin two longitudinal separable half members iaving means engaging each with the other for releasably holding them together, said holder having a portion adapted to be removably fitted in a hole in a cylinder block concentric with a valve seat and communicating with the valve chamber, and said holder having a bore adapted to have rotatably fitted therein the stem of a valve which is being ground to said seat, said hold er having a head cupped in its upper end and of greater diameter than. the portion which is fitted to said hole,

6. A valve holder of the kind described comprising two longitudinal separable half members, said holder having a bore adapted to have fitted slidably and rotatably therein the stem of a valve which is being ground, the holder having a portion adapted to be removably fitted in a hole in a cylinder block concentric with a valve seat in the block and communicating with the valve chamber, the holder having a head cupped in its upper end and of greater diameter than the portion which is adapted to be fitted in said hole, one of said members having a transverse hole and the other member having a transverse pin adapted for removable insertion into the hole of the opposite member for releasably holding said members together on the stem of said valve. r

In testimony whereof I have signed my name to this specification.

LE ROY VAUGHT.

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