US1566083A

US1566083A - Engine-valve-setting gauge

Info

Publication number: US1566083A
Application number: US551A
Authority: US
Inventors: Harry E Forslund
Original assignee: Individual
Current assignee: Individual
Priority date: 1925-01-05
Filing date: 1925-01-05
Publication date: 1925-12-15
Anticipated expiration: 1942-12-15

Description

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Patented Dec. 15, 1925.

UNITED STATES HARRY E. FORSLUND. OF i-i.

PATENT oFfFicE.

l.iro-tis, MINNESOTA.

ENGINE-VALvE-SETTING GAUGE.

Application vfiled January 5,` 1925.

To {(/l iii/(om 'it lmay collec/'nf lle it known that I,'Hiinur IC. FoiisLUNn, citi/.cn of the United States, residing at Minneapolis, in the county of Hennepin and State of Minnesota, have invented certain new and useful Improvements in Engine- Valve-Setting Gauges; 'and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it ap pertains to make and use the same.

This invention relates to a device for properly adpistmg the opening and closing position of the inlet and exhaust valves on 4over the engine and having a mark on `the liy wheel which would be alined `with the inark on a stationary part of the'engine. It is a great deal more convenient, especially if only one person is working onthe engine, to set'the valve opening and closing according 'to the position ofthe piston and Athe Apiston is, of course, moved in definite relation to the revolution of the crank shaft or ,Si y wheel. p

t is an object o't'ithis invention, therefore, to provide a. very simple and etlicient device, by means of which 'the setting of the valvecan be properly made in relation to 'the position of the piston inthe cylinder.

l It is also an object of y'the invention to provide a device 'for determining the setting position of the intake and exhaust valves of an internal combustion engine, which device is adapted to be placed in a cylinder of said engine having a portion 'constructed and arranged to engage the top of a piston and a portion constructed and arrangedto engage the top of the cylinder; said device also having an intermediate or side portion so arranged that the device can also be used to determine a position of the valve when the top of the piston is above the top of the cylinder.

It is more specilically an object of the invention to provide such a device comprising a member adapted to be placed in the engine Lvlinder having a plane surface or straight Serial No. 551.

edge adapted to engage the top of the piston and having indications thereon adapt-ed to be alined with the top oi' the cylinder when lthe piston is in proper position for the valves yto open or close.

These and other objects and advantages ofthe inventionwill be fully set forth in the following description made in connection with the accompanying drawings, in which Fig. l is vertical section through a cylinder showing the Lpiston therein and `part ofthe connecting rod and also showing a Vview in side elevation of the device in use;

Fig. 2 is an edge view of the device; rand Fig. 3 is a view in side elevation of the modified form of the invention.

Referring to the drawings, the cylinder 3 `Ot an internal combustion engine is shown,

in which is movable the piston 2l, shown having `the usual piston rings 5 therein and as connected to the connecting rod 16. In accordance with 'the present invention, the member 7 is shown adapted to be inserted in the top of the cylinder. lhilethe device may be made in various shapes, in the einbodiinent of the invention illustrated, the same is shown as made from a compara- "tively wide tlat plate'ha'ving a straight edge or plane end 7u at one'end, which end is adapted Ato engage 'the top of a piston. Member 7 has valso straight side edges at its angles to edge 7 adapted to'tit against the inner side of the cylinder $3. The plate 7 has marks or indications 7" and '7 thereon extending normal to its side edges.

In the forni of the invention shown in Fig. 3 a'tiat plate 8 is used which may be of the saine thickness as the plate 'T andthe plate S has a bottom portion or straight 'edge 8 adapted to engage the top ofthe piston when the plateS is disposed intlie top of the cylinder. The plate S has side portions 8" and Hc disposed at right angles tothe bottom portion Si", the side portions 8" 'and Sc'being oll'set respectively to form the shoulder portions S and Se, which shoulder portions are parallel to the portion The length of the shoulder portions Sd and Se is also determined for a certain type of engine as will be later described.

In operation of the device as shown in Figs. 1 and 2, when the valves are to be set, member 7 will be inserted into the top of the cylinder with the edge 7a in Contact with the top of the piston. The engine will then be moved until the piston is in position to bring the gauge mark 71 into alinement with the top of the cylinder or top of the cylinder block, which is usually a flat surface. The mark 7" Will be so placed that when the piston is in this position the intake valve should just be in closed position and the valve can be so set. The engine Will then be moved to bring the piston into position with the mark 7 in alinement with the top of the cylinder or cylinder block. lVhen the piston is in this position, the exhaust valve should begin to open and this valve can be so set. dVhen the valves are thus adjusted, they Will be in proper relation to the piston and the 'movements of the piston and valves Will be properly synchronized.

In the use of the device as shown in Fig. 3, the member 8 will be inserted in the top of a cylinder of the engine with the portion 8a in contact With the top of the piston. The engine Will then be turned or moved until the shoulder 8d comes into flat Contact With the top of a cylinder or cylinder block. then the piston is in this position the intake valve Will be in closing position and the valve can be so set. If desired, of course, the shoulder 8d may be first placed in contact With the top of a cylinder or cylinder block with the edge 8b' against the side of the cylinder, and the engine then turned until the top of the piston engages the portion 8, at which time the intake valve can be set for closing position. To set the exhaust valve for opening position the portion 8aL Will be placed in engagement With the top of the piston Within the cylinder and the engine moved until the shoulder' Se also engages the top of the cylinder or cylinder block. As before stated, the shoulder Se might first be placed in engagement With the top of a cylinder or cylinder block and the engine moved until the top of the piston engages the portion 8a, it being understood that the side Si should be in contact with the Wall of the cylinder. lt is often desirable to also check the setting in the valves as to the opening of the intake valve and the closing of the exhaust valve. In most engines the top of the piston at this time is slightly above the iop of the cylinder. The member 8 is so arranged that if the portion Sc on the side having the shoulder 8d is placed ilat against thc iop of the cylinder or cylinder block, the yportion S" on the same side Will .then just be in engagement with the top of the piston the correct closing position of the exhaust valve determined. By the use of member 8, therefore, the four positions of the valves can be determined directly from the piston and the valves can be set in a very convenient manner.

From the above description, it is seen that applicant has provided a very simple and eiicient device which Will have high utility in determining the correct opening and closing positions of the intake and exhaust valves in relation to the position of the piston. The device is quite simple and can be easily and inexpensively produced. The same has been used in actual practice and found to be very successful and efficient.

lVhat is claimed is:

A device for determining the setting of the intake and exhaust valves of an internal combustion engine7 comprising a member adapted to be placed in a cylinder of said engine and having a straight bottom portion adapted to engage the top of the piston, said member having straight comparatively long side portions extending at right angles to said bottom portion and respectively having at each side shoulder portions extending at right angles to said side portions, said shoulder portions being disposed at different distances from said bottom portion, said. shoulders being adapted to engage the top of the cylinder block When the said bottom portion is in engagement with the top of the piston for respectively determining the closing position of the intake valve and the opening position of the exhaust valve, and the portions of said side portions at each side of said shoulders being respectively adapted to engage the top of the cylinder and the top of the piston when the intake and exhaust valves are respectively in opening and closing positions.

In testimony whereof I afl'ix my signature.

HARRY E. FORSLUND.