US1368285A - Valve-lifter for automobiles - Google Patents

Description

G. G. PATTERSON.

VALVE LIFTER FOR AUTOMOBILES.

' APPLICATKON FILED Nov, 22. 1919.

1,368,285. Patented m. 15,1921.

a Paliarsmn I cad/gum PATENT OFFICE.

GEORGE G. PATTERSON, OF LIBERTY, TEXAS.

VALVE-LIFTER FOR AUTOMOBILES.

Application filed November 22, 1919.

T 0 all whom it may concern.

Be it known that I, GEORGE G. PATTER- SON, a citizen of the United States, residing at Liberty, in the county oi Liberty and State of Texas, have invented certain new and useful Improvements in Valve- Litters for Automobiles. OTE which the following is a specification.

This invention relates to valve removers, and the primary object of the invention is to provide an improved device for compressing a spring of the intake and exhaust valves of an internal combustion engine and to permit the convenient and quick removal of the valve for regrinding and the like.

Another obj ect of the invention is the pro vision of an improved device for simultaneously compressing the springs of the intake and exhaust vaives of a plurality of cylinders at one operation, thereby eliminating the necessity of removing or compressing these springs one at a time.

A further object of the invention is the provision of a tool for compressing the springs of the intake and exhaust valves of an internal combustion engine, which is so constructed that after the springs have been compressed the same are held in their contracted position, thereby permitting the removal of the valves and stems without dis placing the springs or seats.

A still further object of the invention is the provision-of an improved device of the above character which is durable and etficient in use, one that is simple and easy to manufacture, and one which can be placed upon the market at a reasonable cost.

Other objects of the invention will appear in the following detailed description taken in connection with the accompanying drawings forming a part of this specification, and in which drawings:

Figure 1 is a perspective view of an internal combustion engine showing the .improved device applied thereto and in locked position with the valve springs compressed.

Fig. 2 is an enlarged detail fragmentary vertical transverse section through the en gine and valve lifter showing the springs as compressed and the device in locked position.

Fig. 3 is an enlarged detail perspective view of the improved device.

Fig. 41 is a detail horizontal section taken on the line 4.--4l of Fig 2, and V Fig. 5 is an enlarged detail vertical sec- Specification of Letters Patent.

Patented Feb. 15, 1921.

Serial No. 339,942.

tion through the improved device showing the manner of securing the operating cams thereto.

Referring to the drawings, in detail, wherein similar reference characters designate corresponding parts throughout the several views, the letter A indicates a gasolene motor or internal combustion engine of a common type, and includes the valve stems 10 normally pressed downwardly by compressing springs 11 to hold the valves to their seats. The springs 11 at their upper ends engage with the valve casing or other rigid part oi the engine, while at their lower ends they rest upon valve spring seats 12 which are formed dish shaped, so as to prevent displacement of the springs there from. The spring seats 12 are slidably mounted on the valve 11 in the ordinary manner, and are limited in their downward movement by a transverse pin 13, and the spring seats 12 hearing against these pins firmly hold the valve on its seat (not shown). The valve lifting rods 1% extend upwardly through the cylindrical sleeve 15. formed in the valve casing in alinement with the valve stem, and the rods are raised and lowered in the ordinary manner by the am shaft 16. An upwardly extending lip or flange 17 is formed on the casing of the motor in the usual manner.

AS stated, the engine as shown forms no part of the invention, but is merely shown to facilitate the understanding of the improved valve spring compressor B, which includes the spring engaging plate C and the operating means D.

The spring engaging member 0 of the improved device B includes a substantially rectangular flat base plate 18 provided at equi-distantly spaced points with relatively large circular apertures 19, which have one side thereof opening out through the inner longitudinal edge of the plate 18. The Wall of each opening is provided adjacent its lower ends wit-h an inwardly extending flange 20,which forms a seat or rest for the spring seat 12. The walls of the openings are curved as at 21, so as to conform to the configuration of the dish shaped spring seats 12. The passage connecting the openings with the inner longitudinal edge of the plate 18 is formed relatively small, so as to form restricted necks or entrances to the openings, so as to prevent lateral movement of the plate 18 in relation to the spring seats 12,

. moval of when the plate 18 is placed in operative position, for a purpose which will be hereinafter more fully described. The lower surface oi. the plate 18 is provided adjacent its ends, with pairs of depending ears or bearing brackets 22, which are riveted or otherwise secured, as at 23, to the lower surface of the plate.

The operating means D include a pairof operating cams 24:, having outwardly extending levers 25, the lower terminals of which are bent inwardly at right angles to provide handles 26, to permit the conyenient operation of the cams. The upper terminals of the cams directly opposite to the operating levers 25 are positioned between the ears or hearing brackets 22 and pivotally connected thereto by means of pivot pins 26. The lower faces of the cams 24- adjacent to the lever 25 are each provided with an inwardly extending notch 28 which is adapted to engage the rib or flange formed on the motor casing for a purpose which will here matter-more fully appear.

*ln operation of the improved device, the plate 18 is forced inwardly into engagement with the valve stems 10, and under the spring seats 12, which fit into the openings 19 and rest upon the flange 21. Owing to the shape of the opening 18 and the spring seat 12,

relative lateral movement of the plate 18 is prevented. After the plate is placed in position on the valve stems and in engagement with the spring seats, the operatinglevers 25 are thrown downwardly, which owing to the shape of the cams 24 raises the plate 18 in a vertical plane and compresses the springs 11. Nhen the levers 25 have been moved to their extreme downward position, the flange or rib 17 on the casingioi the mo tor will ride into the notch 28 and frictionally engage thewalls thereofand prevent accidental upward movement of the lever, thereby locking the lever in its adjusted lowered position and the springs 11 compressed. The pins 14 are then removed from the valvestems, which p rmits the removal of thevalvc in the ordinary manner. From the foregoing description it can be seen that an approved device is provided for quickly andreadilysupporting a plurality of valve springs for permitting the convenient rethe valve for regrinding and the like.

Changes in details may be made without departing from the spirit or scope of my invention; but,

claim: 7 A valve spring compressor comprising the openings having restricted entrances communicating with. one longitudinal. edge of the plate, bearing brackets secured to the 7 lower surface of the plate cams pivotally secured to the'brackets, and operating levers carried by the cams. V V

, 3. The combination with an internal combustion engine including a casing having an upstanding rib or flange, sliding valve stems carried by the casing, springs coiled around said stems, and spring seats slidably mounted on the stems, of a spring support therefor including a fiat plate having a plurality of equi-distantly spaced openings formed thereinhaving communicating restricted entrances opening out through one longitudi' nal edge of the plate and arranged to receive the valve stems, cams pivotally carried by the plate, the lower surface of the cams having inwardly extending notches arranged to receive the rib when the cams are swung to their loweredpositions to hold the cams in their adjusted position. at. The combination with a body having an upstanding rib, sliding valve stems carried by the body, springs coiled around the stems, spring seats slidably mounted on the stems, of a spring support'including a flat 100.

longitudinally extending plate having a plurality of openings formed therein arranged to receive the valve stems, the openings having restricted neck entrances communicating with one longitudinal edge of the plate and an inwardly extending flange formed on the walls of the openings for the reception of the spring seats, cams pivotally carried by the lower surface of the plate arranged to engage the body, operating levers carried by the cams, the lower surface of the cams having inwardly extending notches formed therein adjacent the levers for the reception of the upstanding rib whereby the cams will be held against movement when in their adjustedposition.

GEORGE e. PATTERSON.

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