US1851681A - Valve spring lock inserter - Google Patents

Description

March 29, 1932. c J, MUZZY ET AL 1,851,681

VALVE SPRING LOCK INSERTER Filed June 2, 1928Mn 37 lmm' m IN VE N TORS C/ltsrck Jmoiv fiazzn By 77mm E mama Giana 7. A TTORNEYS.

mm... Mar. 29, 1932 UNITED STATES PATENT' OFFICE CHESTER JUDSON' MUZZY AND THOMAS EDWARD GANNON, O! BAKER, OREGON VALVE SPRING LOCK INSEB'I'ER Application filed June 2, 1928. Serial 1T0. 282,438.

Our invention relates to improvements in valve spring key inserters commonly known as split keys, and it consists in the combinations, constructions, and arrangements hereinafter described and claimed.

An object of our invention is to provide a valve spring key inserter that employs in a single tool means for holding the two parts of the key and for keeping these parts separated from each other until they are moved upon the valve stem,whereby the tool can be 1 removed, leaving the parts in adjusted position upon the stem. Tools of which we are aware for inserting valve spring keys do not 1 hold the ke parts separated from each other,

and they 0 not absolutely prevent the key parts from falling down into the crank case.

Considerable time, of course, is lost should a key drop into the crank case, in requiring an the mechanic to fish it out.

A further object of our invention is to provide a device of the type described which is extremely simple in construction and which is thoroughly eflicient for the purpose intended.

Other objects and advantages will appear as the specification proceeds, and the novel features will be particularly pointed out in the appended claims.

Our invention is illustrated in the accompanying drawings forming a part of this P ication, in whichigure 1 is a to plan view of the device;

Figure 2 is a si e elevation; and

Figures 3 and 4 are sections along the lines 33 and 44 of Figure 2.

In carrying out our invention, we provide ahandle 1 that is flat and relatively long. One end of the handle has arecess 2 large 0 enough to receive avalve stem 3 spring pressed by spring 3a. Upon the handle we slidably mount abar 4 that is centrally disposed. One end of the bar normally bisects therecess 2 and extends beyond the handle. The bar is used for the pur ose of keepingkey parts 5 and 6 separated rom each other. The bar is of the same width as the diameter of the reduced portion 7 of the stem 3 (see Figure 1).

Keepers 8 and 9 are used for slidably conres ect to the handle.

necting thebar 4 to thehandle 1. The keeper 8 is shown in.Fiures 1, 2 and 3, and it comprises a strip 0 metal that has outwardl extendingears 10 and 11 lying flush with t e top of the keeper, andlegs 12 and 13 that are bent downwardly to straddle thebar 4. The

'the strip of metal forming the keeper 9-, and

legs 20 and 21 are also integral with the 68 keeper and extend through openings 22 and 23 and haveupset ends 24 and 25. Thebar 4 slides through thekeeper 9 as shown.

Figure 2 clearly shows how the 1e 5 ofkeepers 8 and 9 are provided with re need portions 26 and 27 that extend through the openings in thehandle 1. This construction, together with the upset ends of the legs, prevents vertical movement of the keepers with U-shapedspring 28 straddles thekeepers 8 and 9, and has, its closedend 29 passed beq neath thebar 4. Fiure 2 shows how the closed portion is slidafily received in arecess 30 cut into the bottom of thebar 4.

Theleg 31 of the spring is passed through theeyelet 18 and beneath theear 10, while theleg 32 is carried by the eyelet link and bears against the under surface of theear 11. The eyelets urge thelegs 31 and 32 toward each other, and the legs are provided withcurved portions 33 and 34 respectively that yieldingly engage with thekey parts 5 and 6. The ends ofthelegs 31*and 32 are curved outwardly at 35 and 36 for permitting them to receive thevalve stem 3.

From the foregoing description of the various parts of the device, the operation thereof may be readily understood. Thekey parts 5 and 6 are placed u on each side of thebar 4 and are held in p ace by thespring 28. Thehandle 1 is now moved toward thevalve stem 3 for causing the stem to contact with theend of thebar 4 and to move the bar rearwardly until the stem is received between the key parts and 6; Thelegs 31 and 32 of the spring snap the key parts into place upon the reduced portion or groove 7. Thebar 4 may now be retracted 5 still further by placing the thumb upon theserrated end 37 and drawing rearwardly. This frees the bar from the keys and permits the spring legs to cause the key parts to encircle the reduced ortion 7.

Thewasher 38 is now lowered upon the portions of thekey parts 5 and 6 that pro- ]ect above thelegs 31 and 32. The tool may now be removed and theke parts 5 and 6 will be prevented from fal ing due to the washer enclosing the tops of them. After the tool is removed, the washer may be moved downwardly until it is seated upon the key arts. p Although'we have shown and described 3 one embodiment of our invention, it is to be understood that the same is susceptible of various changes, and we reserve the right to employ such changes as may come within the scope of the appended claims. We claim:

1. A valve spring key inserter for keys having a plurality of parts com rising a suport for the keys and slidab e means for keeping the key parts entirely free from 80 each other.

2. A valve spring key inserter for keys having a plurality of parts comprising a suport for the 'keys and slidable means for keeping the key parts separated from each other, said means being adapted to be moved when brought into contact with a valve stem for permitting the stem to be received between the key parts.

,3. A valve spring key inserter for keys having a plurality of parts comprising a handle for supporting the key parts, a spacing member adapted to be disposed between the key parts and being'of substantially the same width as the diameter of the valve stem, said member being movable by the stem when brought into contact with the stem and spring means for urging said key parts into position upon the stem when the member is retracted.

4. A valve spring key inserter for keys having a plurality of parts comprising a handle for supporting the key parts, a bar slidable thereon for spacing the key parts from each other, and spring means for urging the key parts toward each other. 5. A valve spring key inserter for keys having a plurality of parts comprising a handle, a bar slidable thereon for spacing the key parts from each other and spring means for urging the key parts toward each other, said bar being of substantially the same width as the diameter of a valve stem and adapted to be retracted by the stem when brought into contacting engagement with said stem whereby said spring means will ing member and being adapted to be moved when brought into contact with a valve stem for freeirag the key halves from the s acing means an means for urging said key alves toward each other whereby said urging means will move the key halves into engagement with the valve stem.

having two segments comprisin a key supporting member, means slidably mounted thereon for spacing the segments of the key from each other, by passing between the segments and means for urging the key segments toward each other.

8. A valve spring key inserter for keys having a number of segments comprising a key supporting member having a notch adapted to receive a valve stem, a bar slidably mounted on said member and being ada ted to space segments of the key from eac other and being slidable therebetween, yielding means for urging the key segments towar each. other, said yielding means being mounted upon said member and being adapted to force the key segments against said slidable bar and said bar being adapted to be retracted when brought into contacting engagement with the valve stem, whereby said against the stem.

'9. A valve sprin key inserter for keys consisting of a pair 0? parts, com risin means for spacing the two parts of t e va ve stem key and means for urging the two parts upon the spacing means, the said spacin means being retractible so as to yield and withdraw when pushed against a valve rod.

10. A device of the class described comprising a bod element terminating in one bifurcated en atongue slidably disposed upon the body element, means limiting the movement of the tongue relative to the body element, a resilient split key holder pivotally secured to the body element and means for limiting the movement of the resilient split key holder relative to the body element.

11. A device of the class described, the combination of a one-piece body element terminating in a bifurcated head at one end, a tongue disposed central of the body element and adapted for limited movement longitudinally of the body element, spring means secured to the body element and lying at either side of the tongue and means for maintaining the side arms of the spring means in slidable engagement with the body element.

12. A device of the class described, the

7. A valve spring key inserter for keys lUU yielding means will urge the key segments Ill combination of a bifurcated body element a tongue disposed centrally of the body ament and slidable relative thereto, spring means composed of two arms being hingedly secured to the body element, and means for maintaining the said arms of the spring means parallel to the body element.

- CHESTER JUDSON MUZZY.

THOMAS EDWARD GANNON.

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