US1877477A - Explosive engine attachment to facilitate valve grinding - Google Patents

Description

Sept. 13, 1932.

C. Bv GLADDING EXPLOSIVE ENGINE ATTACHMENT TO FACILITATE VALVE GRINDING Filed June 2, 1928 l 4 E i z i ML Patented Sept. 13, 1932 UNITED Ts CHARLES :e. GLADDING, or GENEVA, oHIo Application filed. June-2, 1928. Serial No. 282,444.

The finishing or adjusting of the valves in certain moderately priced cars of today requires that the piston within the cylinderbe' properly and accurately positioned with respect to the valves so that the latter may be properly worked on. It is a fact that when a piston in one cylinder is located relat ve to certain of the valves, that the other plstons are not in suitable position to have operation take place on the other valves. This condition has given rise to considerable diiiiculty which is encountered when the valves of an internal combustion engine are to be ground, and this invention has for its primary object the provision of a device which may be availed of to accurately position any of the pistons in a motor.

A more particular object in view, is to pro vide a device ofthis character which avails of the studs commonly employed to aflix the cylinder head to the block. This feature 111- sures the proper positioning of the device on any engine with which it is to be employed.

In carrying out my idea more in detail, I employ an elongated .main body member,

having vertically'extending bores properly located therein to receive stud bolts of a cylinder block when the head is, removed. The main body member at its .lowerportion terminates in a flange in which are formed spaced openings. There being one opening provided for each cylinder of the motor with which the device is designed to be used.

Fashioned in the main body member just above the opening in the flange just described, are grooves which cooperate with projections on a gauge pin for positively holding the latter in position in one of the openings. A gauge'pin is inserted in one of the openings just described and a projection thereon is seated in the groove adjacent to the pin. WVhereupon, the pin is properly positioned in the cylinder bore to limit upward movementv of the piston therein. Upon operation of the crank shaft, the piston abuts against the pin and in this position the pistons are located with respect to certain of the valves so that they may be ground. 7

It is a noteworthyfeature of this'invention that when the gauge pin is inserted in one cylinder bore, two valves are always properly adapted to have grinding action take place thereon, but these valves are not necessarily those associated withthe particular cylinder opening in which the gauge pin is inserted, because it is essential that the piston be in this position for operations on the intake valves as compared with the exhaust valves; For instance, when the gauge pin is, inserted in the cylinder bore at one end of the engine,

valves numbers 1 and 6 are adapted to be ground. While locating the pin in the, sec- 0nd cylinder bore it will put valves 4: and 2 intoconditionto have grinding action take place thereon. V It is achighly important object of the invention to provide the device with indicia to indicatewhich valves are ready to be ground when the gauge pin is located in any one of the cylinder bores. In carrying out thisidea more into practical use, the main body memberis provided with indicia which are described on the side thereof adjacentto the openings to which the pin is to fit; This indicia indicates the number of the valves which are ready to be ground when the pin is located in that particular opening. 1

The present invention has to do, of course, not only with the proper setting of the valves of an engine incident togrinding operations, but for their adjustment withrequired'nicety oftherelationZof the'valve stems to the push' rods, irrespective of whether grinding of the valves has to be performed. In other words, the invention is designed in its broadest phase forobtaining the proper valve adjustments or spacing of the valve stems regard ing the push rods under any conditions, because it is well known that at times valves of explosive engines become noisy through getting out of adjustment and this often happens when the valvesare perfectly ground andwill seat well-without having to be re finished in any way. l To exemplify one particular utility of this invention," I make reference to the present" new model Adesign of Ford engine for the purposes of which my invention is especially adapted. In this particular type of engine; it has been determined empiricallythat the required for the perfect operation of the valves controlled for theparticularpiston movement. In the Ford engine the controlling position ofthe piston ,is about. 2 5/32 from the top of the engine block and obviously, this is a nicety of adjustment which it gives trouble to the engine 'man in valve adjusting. operations. By my invention, the adjusting device which has been briefly outlined as'to construction, 'hereinbefore, when once positioned upon the engine block and arranged with the gauge pin properly disposed to limit the movementof the particular piston so that it may be positioned at its controlling position, enables an operator to quickly adjust the valves associated withthe' particular piston action so as to space the valve stems of'such valves with exactnessand certainty relatively to the push rods cooper-V ating therewith and actuated by the cam shaft. The proper spacing is known to be about 13/1000.

Other features of my device worthy of emphasis are the ease with which it is put into position for use, readily adj ustable to cooperate with any cylinder bore, simplicity of construction, andeaseof manufacture.

4 Various other more detailed objects and advantages will in partbecome apparent and in part be hereinafter stated as the description of the invention proceeds. I 1. For a full and more complete understanding of the invention, reference may be had to the following description and accompanying drawing, inwhich Y i Figure 1 is 'a'vlew in perspective, bringing out the manner of application of my valve timing device to a cylinder block.

Figure 2 is a detached showing in perspective of'the main body member with the gauge pin in position in which a projection thereon engages a groove in the main body member.

Figure 8 is a detached vi-ew in side elevation of a gauge pin.

Figure 4 is a sectional viewshowing of the device bringing out the manner in which the gauge. pin projects into a cylinder bore.

Figure 5 is a view in section bringing out one modification in which a wing nut and spring are associated with the connecting bolts.

understood that I am not to be limited to the I V exact constructions illustrated and described,

because various modifications of these details may be providedin putting the invention into practice within the purview of the appended claims.

Throughout the various figures of the drawing and the specification, corresponding parts are denoted by like reference characters.

A cylinder block with the head removed is shown in Figure 1 and designated by the reference character A. The head (not shown) is adapted to be fastened to the block through the medium of stud bolts B. I avail of the stud boltsB as a fastening means for properly positioning my valve timing device which is referred togenerally as G.

Device 0 comprises a main body member 1, having a lower flange portion 2, and vertical enlarged portions 8. The enlargements 3, .whichin this instance'are two in number, are provided with bores extending vertically therethrough, and these bores are adapted to receive the stud bolts B when the devicev is operatively positioned. In the form illustrated I have also shown one .of the stud bolts B passingthrough an fopening'in the flange 2. This flange is also provided'with equidistantly spacedv openings 4, there being four of these openings, though it. being un* derstood that the number of the openings 4 will vary with the number of cylinders in the engine with which the device is to be employed; 4

Attention is called to the fact that in the illustrated embodiment, the openings'in the enlargements 3 are surrounded on the lower surface of the member 1 with downwardly projecting portions 5, which function. to slightly space the flange portion 2 from the cylinder block A. I V

The member 1 above each of the openings 4, is cut away to provide grooves 6, which deepen gradually to a maximum-depth oppo site the openings-4. I A gauge pin 7 has diametricallyopposing projections 8 extending radially therefrom, and is adapted to pass through one of the openings'4 to project downw'ardly'into one of the cylinder bores in the cylinder block A. The projections 8 are located a suitable distance from the end of the pin 7 so that when one ofthe projections 8 is fitted in the recesses 6, thepin will constitute a limit for upward movement'of'the piston ofthe cylinder in which a pin is located. I

The flange 2 on its side is provided with suitable indicia to indicate which valves are in proper condition for grinding whenthe gauge pin is located in anyone of the holes. For instance, referring to Figure 1, when the gauge pin is' in the second hole from the end, as illustrated, the side of the flange-in dicates that thevalve's 4 and 2 are readyfor grinding. If the pin were positioned in the right hand end opening,- then valves. land 6 would be in condition'for' grinding The operation anduseJof' myval ve' timing seam device is practically self-evident from the foregoing description. Subsequent to the removal of the head from the cylinder block, the main body member 1 is positioned by having certain of the stud bolts B pass through the openings 3. One of them passing through an opening in the flange 2. A gauge pin or piston contact member 7 is now inserted in one of the openings 4 and when one of the projections 8 is opposite the recess 6, associated with the opening 4, the pin is turned, seating the projection in the recess. The main crank shaft of the engine is now turned which causes the piston in the cylinder to move upwardly until it abuts the extremity of the pin 7 When this condition is reached, the valves indicated by the indicia adjacent to the opening in which the pin is fitted, are in proper condition to have grinding operations take place thereon. When these valves have been finished, the pin is inserted in another opening and the operations repeated.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent of the United States, is

1. A valve timing device of the class described, comprising, in combination, a main body member formed with means adapting it to be detachably fastened to a cylinder block in position over the cylinders when the head is removed and leaving the valves accessible, and an instrumentality associated with the main body member for limiting movement of one of the pistons in the cylinder block and thereby determining the setting of certain of the valves, said valves being adjustable while the device is in operative position.

2. A valve timing device of the class described, comprising, in combination, a main body member having spaced openings therein, there being one of such openings provided for each cylinder with which the device is to be used, a gauge pin adapted to be fitted in any one of the openings in position to be engaged by a piston in its travel in the cylinder for determining the position of certain valves and means for holding the gauge pin against displacement from the linder opening when engaged by the piston, said body member being constructed to allow access to and work upon the valves Whose positions are determined by the gauge pin.

3. A valve timing device of the class described, comprising, in combination, a main body member having openings therein adapted to receive the stud bolts of a cylinder block, said main body member also being provided with spaced openings and with grooves adj acent said openings, a gauge pin adapted to fit in one of the openings and having a projection adapted to be seated in the groove adjacent the opening in which the pin is fitted.

4. A valve timing device of the class described for attachment to a cylinder block in the position of the cylinder head, comprising,

assessm n ,aaiasirtnesna suspend-f edin the "cylinder for positively limiting, the

movement of a pistonina cylin de-rjto deter mine the-position of valves, said valves being accessible while the device is inoperative position, and means for holding said instrumentality in proper position against "displacement iromthecylinder; 5. In avalveti'ming device of the class: described,therombinatiOn with a main body member having means for detachably connecting it to a cylinder block in the position normally occupied by the cylinder head, of an instrumentality associated with the main body member and adapted to project into any one of the cylinder openings to constitute an abutment for limiting upward movement of a piston in the cylinder to determine proper valve positions, the valves being accessible for grinding when the body member is in position on the block.

6. In a valve timing device for the class described, the combination of a main body member, and an instrumentality for limiting movement of a piston, said body member having 1nd1c1a means associated therewlth for indlcating WlllGh valves are 1n proper posltion to have grinding action take place thereon.

7. In a valve timing device of the class described, the combination of a pin for limiting the'movement of a piston so as to properly position another piston for valve grinding operations, and supporting means for the pin,

said supporting means having indicia associated therewith for indicating which valves are ready for operations thereon.

8. In mechanism of the, class described,

the combination with a main body member adapted to be secured to a cylinder block in the place of the cylinder head, of a gauge pin adapted to interlock with the main body member and to extend. into a cylinder opening to position any one of the pistons in a cylinder block, said gauge pin and main body member being so interchanged that the limit of move ment of each of the pistons is constant the prising a body member having means for).

attaching it upon the cylinder block, a pin adapted to be mounted on said member so as to extend into the cylinder opening, means arranged at a predetermined point in the length of said pin and adapted to coact with a the body member to suspend the pin in said cylinder opening,said body member having means engageable by said suspending means when the pin is rotated to effect interlock with the body member.

10. A device of the class described, comin a u-nit adapted for attachment. to an internal combustion engine cylinder block having pist0ns,sai'd unit inclnding a. device for positioning certain valves for grinding, Q said unit having indicia thereon to indicate Which VELlVGS are properly positioned for grinding and being adapted to remain in positionduring grinding of the valves.

. In testi mony whereof I aflix my signature. CHARLES B. GLADDING. v

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