US1873067A

US1873067A - Valve stem fitting fixture

Info

Publication number: US1873067A
Application number: US338910A
Authority: US
Inventors: Charles D Stromgren
Original assignee: Individual
Current assignee: Individual
Priority date: 1929-02-11
Filing date: 1929-02-11
Publication date: 1932-08-23
Anticipated expiration: 1949-08-23

Description

All@ 23, 1932 c. D. ls'rRoMcaREN VALVE SITEM FITTING FIXTURE Original Filed Feb. 1l, 1929 Sheets-Sheet Allg` 23, 1932- c. D. sTRoMGREN l 1,873,067

VALVE STEM FITTING FIXTURE original Filed Feb. 11, 1929 zsheeis-sheei 2 72 i I, w

Patented Aug.l 23, 1932' UNITED l STATES CHARLES D. STROMGREN, F LOS ANGELES, CALIFORNIA 'VALVE STEM FITTING FIXTURE Application led February 11, 1929, Serial No. 338,910. Renewed June 27, 1932.

This invention relates to a valve stem f1tting fixture and is more lparticularly directed to improvements in fixtures of the type disclosed in my prior Patent, No. 1,435,428.'

5 It is important for the most efficient operation of an internal combustion engine that the valves be set with a predetermined clearance relative to the tappets or push rods. This setting is accomplished in most engines lo by athreaded adjustment on the tappets, but in the Ford type of motor the tappets are fixed in length and the adjustment must be obtained by grinding the Vvalve'stem to provide the proper clearance between the long end of the valve stem and the upper end of the valve tappet. Prior to the devolopment of the device disclosed in my former patent,

this was accomplished by a 'cut and try method in which the'valves were positioned and the valve stem filed down to obtain the proper clearance. In using this procedure the valve stems were frequently cut down too far, making it necessary to discard the valve and to carry out the operation again.

The device disclosed in my former patent, which Was developed more particularly for use in places whe'rfervalve grinding machinery was not at hand,` embodied a holding template for receiving the valve in which the projecting end of the valve stem is led or ground down to a point at which it is flush with the gauging face of the template member.

In the use'of an organization of this character the partv of gauglng face of the template member is frequently cut away by coming in contact With the grinding wheel or the file and the subsequent accuracy of the device is materially affected.

It is a primary object of this invention to 40 produce a valve fitting organization of the class described, which is particularly adapt- Y ed for use in combination with an emery Wheel or with valve facing tools of the type commonly used in the automobile industry.

It is a noteworthy feature of this invention that the template memberwhich is used in supporting the valve is so mounted and constructed relative to the grinding Wheel or grinding surface that the sizing of the valve 5 is not necessarily dependent upon the length of the template member but is determined by the distancefrom the seat in the head of the template member to the grinding surface of the Wheel.

Inthe operation of the device described in my prior patent, the vlength of the valve is first determined by a suitable gauging member Which is then used in adjusting the distance from the seat in the template member to the gauging face from which the valve stem projects after the adjustment has been made. The valveI is inserted in the template member and a cap is employed to hold the valve in position.

In the improved form of my invention a gauging member is used t0 determine the proper length of the valve and the gauging member is then employed inconnection with a template member .to adjust the template member so that. the distance from the grinding surface to the valve seating surface in the template head is proper for the valve to be sized.

Itis not desirable in the use of this invention to employ a cap Afor holding the valve fixed in the template since it is advisable for the most successful operation of this device to'rotate the valve in the template While the end of the valve stem is being ground.`

It is an object of this invention to produce a n-ovel and improved type of template #nember which may be associated with any standard form of support, such as is commonly found in connection with emery Wheels, and it has been previously pointed out as a more important object of this invention to develop a template head which may be used a's an attachment for a standard form of valve facing tool. i

It is also an object of this invent-ion to produce a novel type of gauging member which may 'be operated with g'reateigaccu racy and speed than is ordinarily obtainable Y in a gauging member of the class disclosed in my prior patent.

In view of the fact that the new model A type of Ford car is provided With a valve in which the lower tappet engaging. end of the valve stem is larger than thevalve stem, it is a further object of this invention to produce a vgauging member and a template member which are particularly adapted for use in fitting valves of this type, but which are so the `outer end o the template and cutting v away a part ofthe template barrel above the bridge in a manner such that the model A v" type valve may be inserted therein by tipping the valve slightly. The bridge is formed in a manner such that it'will also provide a proper support for the model T type valve.

This adapta-bility for different types of valves may also be accomplished by providing a template member barrel which is adapted to'receive movable bushing members of different diameters to conform to the two types of valves.

It will be apparent therefore that this invention embodies a valve fitting organization which is adapted forl use in combination with a grinding wheel and is adapted for optional use upon two or more different types 'of valves. The invention alsoembodiesa novelgauging member and means for iinparting rotation to a yalve during a grinding operation.

The details in the construction of theinvention, together with further novel features and objects attending its production, will be better understood from the following description of the accompanying drawings which are chosen for illustrative only and in which p Fig. 1 vis a sectional elevation showing a new type of gauging member embodied in thisl invention and illustrates the first step employed in a valve fitting operation.

Fig..2 is a partial plan view illustrating a template-member as being associated witha valve facing tool. l

` Fig. 3 is a partial sectional elevation which may b e considered as having been taken substantially in a plane represented by the line 3 3 in Fig. 2 and illustrates the template member having the gauging member positioned therein. A

Fig. 4 is asectional elevation similar to Fig. 3 but illustrating the templatemember as having avalve positioned therein. i

F ig'. 5 is a sectional elevationwhich may be considered as havingbeen taken substanpurposes tially along the line 5 5 in Fig. 3 and illus-l form of tem-plate member and template sup! port which is illustrated as being associated with a grinding wheel and a gauging member of a type similar to that described in my stantially in the direction of the arrow A in Fig. 8 and illustrate themannerin -which the gauging means is provided with a micrometer adjustment and the two views show a manner in which the micrometer is adusted to compensate forclearance in the valve to be fixed in the template.

Fig. 11 is a plan view partially in section which is similar to F ig. 8 andshows the template member adjusted to receive a model A type of valve.

Fig. 12 isa view similar to Fig-11 but shows a template member adjusted to receive a model T type of valve.

Fig. 13 is a View similar to Fig. 11 but illustrates the manner in which a template of the type illustrated in` Fig. 2 may be associated with the supporting means shown in Fig. 8 l A Fig. 14 is a partial sectional view illustrating a cap member which may be used in combiiiaton with a template member of the class described and which is provided with novel means forlimparting rotation to the valve during the grinding operation.

It has been previously pointed out that the valve fitting organization described in this application embodies a template member which is associated with a suitable support in a manner such that the length of the valve to be sized therein is determined by the distance from the valve seating surface in the template member head, to the grinding surface.

This may be accomplished by providing the template member with an adjustable head and in such a. construction the gauging member is used onl to determine the distance from the va ve seat to the tappet.

` After such determination has been made, the

when the valve head on the. gauging member is resting upon the seating surface in the template member head. l

` After such adjustment has been made, th

template member head, being provided with a micrometer adjustment, is moved toward the grinding surface to provide the proper clearance' between the valve stem and the tappet. The valve is then positioned in the template and is pressed against the grinding memberin any suitable manner, the inner end being ground 'off until the valve head is brought firmly against the seating surface in the template head.

It will be apparent that in such a construction it is unnecessary to have a microm- 'eter adjustment on the gauging member and for this reason I have developed a new and novel type of gauging member which may be speedily adjusted to the proper valve length.

Figs. 1 to 7 inclusive illustrate a preferred embodiment of this invention as being associated with a valve facing tool. Referring moreparticularlytothesefigures, reference numeral 11 illustrates a part of an engine which is provided with a valve seat 12 and is associated with a tappet 13.

A gauging member 14 is illustrated as being in a position for determining the distance from the valve seatv 12 to the upper surface of the tappet 13.

The gauging member 14 consists of what may be termed a rod stemsection 15, the lower end of which isprovided with an enlarged tappet engaging section 16 and a downwardly extending threaded recess 17 is provided in the upper end of the stem 15.

The lower end of the threaded recess 17 communicates with a radially extending aperture 18 which receives a movable. member in the form of a ball 19.

A value head 20 is slidably mounted upon the upper end 21 of the rod 15 and is adapted to be held against undue longitudinal movement thereon by means of suitable stops indicated at 22. It will be noted that the head 20 is so positioned as to have an inner surface opposite theaperture 1 8 and means are provided for holding the sphere 19 in pressure engagement with the inner surface of the movable head, such means being illustrated as comprising a threaded screw 23, the lower end of which is tapered so that the downward movement of the screw forces the ball 19 outwardly into engagement with the inner surface of the valve head. i I

In using this type of gauge, the screw is first loosened and the gauge is placed in the engine block in the manner illustrated in Fig. 1 in a position such that the lower end 16 is vrestin'g firmly upon the upper end of the tappet 13. The head member 20 is then pressed firmly against the valve seat 12 and the screw 23 is tightened against the sphere 19. It will be apparent that this construction greatly facilitates the gauging operation.

Fig. 2 illustrates a template member generally indicated at 25 as being mounted Within a sleeve 26 which is supported upon the upper end of a facing tool valve support indicated by reference numeral 27.

In this construction the support 27 is carl ried by a movable base member 28 which base member is provided with means for lateral adjustment in the form of the screw members generally indicated at 29 and 30 respectfully.

The

screw members

29 and 30 provide means for adjusting the base member andits attendingv parts relative to a grinding wheel 31 which may be supported in any preferred manner such as by means of the bearcated in Figs. 2 and 3 and the template member is adjusted either by means of the screw 30 or within the sleeve 26 to a. position at which the inner end 16 engages the grinding surface of the wheel 31 when the valve head member 20 is resting upon a seating surface 35 within the template member head 36 in the manner illustrated in Fig. 3.

It might be stated at this'time that the essential elements of the template member 25 consist of a cylindrical barrel 37, the outer end of which is threaded as indicated at 38 to receive the template head 36, and the head 36 and the barrel 37 are thus cooperatively` provided With micrometer indicating means by virtue ofthe graduations 38' (Fig. 2).

It has been previously mentioned that it tween the tappet and the valve stem and this is accomplished by adjusting the template head after the seating operation described above. In other words after the template member has been positioned so that the inner end of the gauging member rests against the grinding surface and gauging member head is resting upon the seating surface in the template head, the template head is moved toward the grinding member a few thousandths of an inch to compensate for the clearance mentioned above.

After such clearance has 'been compensated for, the valve 4() is inserted in the template member as illustrated in Fig. 4 and is held therein until the lower end-41 of the valve has been ground to a oint at which seat 42 of the valve rests against the seating surface 35 of the template head.

A set screw 43 may be provided in the template head to hold it in a fixed position while the grinding operation is being carried out and, as was heretofore mentioned, it is preferable for the most satisfactory operation of this device to rotate the valve slightly in the templatemember duringthe grinding operation. This rotation may be effected by the operator of the device rotating the valve head with his finger, or may be accomplished by means of a novel type of cap, which will be hereinafter described.

It has been also mentioned as an object of I l opposite to the head 36, the template member determining the exact length of a model A type valve that the gauging member is provided with the enlarged section 41 on the end l of the stem.

Fig. 5 illustrates the manner in which the template member may be supported upon a block 48 which is mounted upon a suitable head 49.

The block 48 is associated with a suitable recess 53 formed in the head 49 and the top of this block is provided with a V-shaped groove 50. The template member is illustrated i as being cylindrical in form and mounted within a cylindrical sleeve 26; the sleeve being retained upon the block by means of a screw 51, the barrel 37 of the template member being held against longitudinal movement in the sleeve 26 by means of the set screw 51.

In Fig. 6 the sleeve 26 is illustrated as being beveled for reception within the groove and in Fig. 7 the sleeve 26 is illustrated as being provided with a downwardly extending projection 52, which is received within 'the recess 53 provided on the head member 49.

These illustrations merely show various manners in which the template member may be associated with different types of supports and emphasizes the adaptability of this valve grinding iXture to various types of facing tools or grinding wheel organizations.

In the organization described above, it might be emphasized that the gauge member is not provided with a micrometerradjustment and that the clearance adjustment is obtained entirely in the template member head. This same effect may be obtained by using a gauging membersimilar to that disclosed in my prior patent, which is provided with the ini-- crometer adjustable head, in connection with a template 'member in which` there is no adjustment. p In Figs. 9 to 13 inclusive I show a modified form of the invention in which the template memberhead is fixed relative to the tem.- plate member barrel 61. Y This template is adapted to be used in combination with a micrometer adjustable gauge member 62 of a .type similar tov that disclosed in my prior' patent.

In this embodiment of the invention the i template member 26a is illustrated as being mounted within an adjustable bracket 63 which is pivotally supported at 63 and may be moved to and from a grinding position as indicated by the dot and dash lines in Fig. 8. The bracket member is illustrated as being provided with a stop member 64 and is adapted to hold the template member in a substantially fixed position relative to the grinding wheel 31a. The bracket 63 is provided with a template receiving sleeve 65 within which the template member may be longitudinally adjusted to any desired position and is adapted to held in such position of adjustment by means of a set screw 66.

The inner end of the template barrel 61 receives a so-called adapting bushing 67 which may be removed and replaced with bushings of varying diameter to make the unit adaptable for use in connection wth various types of valves as illustrated in Figs. 11 and 12. In Fig. 11 the'valve 40a is of the model A type whereas in Fig. l2 the vunit is illustrated as being adapted to receive a model T type valve indicated by reference numeral 40T.y

Fig. 13 illustrates the manner in which a template member 26B, which is similar to that described in connection with Figs. 1 to 4 y inclusive, except that the head member 36 is mounted rigidly upon the barrel 37 B, mayA be associated with the type of bracket indicated at 63 which is the same as that described in Figs. 8, 11 and 12.

Inl using the form of the invention shown in Figs. 8 to 13 inclusive, it will be understood that the gauging member is first placed within the engine .block in the manner described above after which it is placed in the template member. The template member is then adjusted to a position at which the inner end of the gauging member engages the grinding wheel when the valve head of the gauging member is resting upon the seating surface of the template head 60. After such adjustment has been made, the gauging member stem is screwed away from the grinding wheel to compensate for the desired clearance and the. template member is then moved forward to a point at which the inner end of the gauging member is again in engagement with the grinding wheel. The

valve is then positioned-in the template mem-r ber and the grinding operation is carried out as described above.

Figs. 9 to 10 illustrate the manner in which the gauging'member may -be provided with a micrometer adjustment. 'The head 68 is shown as being in threaded engagement with the rod 68 and has graduations 69 on its outer face which cooperate with a mark or groove 69v on the rod to form the micrometer adjustment. Fig. 9 shows the adjustment before making the correction for clearance and Fig. 10 shows the adjustment as having been made for a clearance of .007 of an inch.

Fig. 14 illustrates the template member 26C as being associated with a novel type of capmember 70. This cap member is provided with a central aperture 71 adapted to rotatably receive a pin 7'2, the inner end of which is provided with a suitable engagement member 7 4 which may be in the form of a rubber suction cap and is adapted to be used in rotating a valve during the grinding operation. v

It Will be apparent from the foregoing de-v 10 scription that this invention embodies a novel form of valve fitting organization which is l of simple form and construction and may be readily adapted for use in connection With a grinding Wheel or any standard form of valve facing unit.

It is` emphasized that the sizing of the valve is accomplished by governing the distance from the valve seat to the grinding sury face with a novel type of template member, ".0 the head of which is provided With a seating surface adapted to receive the valve head, and although I have herein described and illustrated one preferred embodiment of the invention indicatingr various modifications thereof, it is to be understood that the invention is not limited to any precise construction or combination of elements set forth, but includes within its scope Whatever changes fairly come Within the spirit of the appended claims.

I claim as my invention:

1. A valve stem fitting organization for use in combination With a grinding Wheel embodying: a template member provided With a head having a valve seating surface therein; means for supporting said template member relative to said Wheel; means for adjusting the distance from said seat to said Wheel; and a detached gauging means for l0 predetermining such adjustment, said template member including a sleeve having a notch adapted to pass an enlarged head on the valve stem and a supporting bridge in the end opposite said head adapted to seat said 5 stem after the head is passed.

2. A valve stem fitting organization for use in combination with a grinding wheel embodying: a vtemplate support associated with said grinding Wheel; a template member provided with a valve seatingl surface and mounted on said support; detached gauging means for predetermining the valve stem length; means for adjusting the position of said seating surface relative to said grinding 5 Wheel to conform to the valve stem length determined by said gauging means and a cap member associated-With said template member, said cap member being provided- With means for manually rotating a valve in said template member during a grinding opy eration. v

In testimony whereof, I have hereunto set my hand at Los` Angeles, California, this 25 day of January, 1929. 5 CHARLES n. sTRoMGREN.