US1378111A - Valve-actuating mechanism - Google Patents

Description

R'. HENDBICKSON. I VALVE ACTUATING MECHANISM.

APPUCATION FILED MAR. 15, 1917- v Patented May'17, 1921.

. fz y W1 'I have shown im a COMPANY,

VALVE-ACTUATING MECHANISM.

Application am March 15, 1917. Serial no. 194,93

To all whom it may concern:

Beit known thatI. Ronnnr 0. lHi-nvmnonson. a citizen of the Knited States, residing at Racine. in the county of Racine and State oflvisconsin, have invented certain new and usc 'ul Improvements in Yalve Actuating Me hanism, of which the following is a specification. i I

My invention relates more particularly to valve mechanism for that-type of cnpldsion engine int which a puppet valvelis located in the head thereof. By my improvement lubrication pf the actuating parts is to a considerable extent dispensed with and unnecessary friction of the parts avoided. .Vhile and described the invention as applied to a specific type of engine, it will he understood that the invention is applicable in other connections which will suggest themselves to those skilled in the art to which the invention relates. I

In the drawing Figure 1 is a longitudinal central section of so much of an explosion engine as is necessary to understand my iu-.

vention, showing the latter applied thereto, and Fig. 2 is a section of a detail, parts being shown in elevation.

The cylinder 3, piston 4, valve 6 and valve spring 7 are or may be of well known types except in so far as they are modified in the respects heretofore pointed out. The valve stem 6' as usual projects through the head of the cylinder and is operated by a rocking lever 8 which is journalcd at 9 to a standard 10 on the cap 27 of the motor in a well known manner The valve operating shaft 11 is as usual located in the crank case and has one or more cams 12 thereon, according to the number of valves to be operated.

Registering cylindrical passages 13, 14 are cast. in the water jacket and cylinder head, respectively, for the push rod 15 by which motion is transmitted from the valve shaft to the rocker arm 8. At its lower end the push rod 15 rests in a cuppedj'follower 16 which is guided in a bearing 17 n a bracket 18 cast integral with the casing, the interior of the follower being cupped and formed with a conical bottom 19 on the bottom of which the push rod rests loosely. The upper end of the push rod is threaded at 20 to receive an interiorly threaded sleeve 21 which is adjustable on said rod and formed a its upper end with Specification of Letters Pater 1t.

cylinder head 5, l

2 rod is of long newal but'seldom. Thefunnel-shaped open- OF RACINE, WISCONSIN, A. CORIORATION OF WISCONSIN.

Patented Ma 17, 1

a partially spi erical cavity 22 which-1e" ceives the ball 23. A lock nut 24 holdsthe' sleeve in adjusted position. The rocker arm 8 is formed at 25 V, size to fit the ball 23 and further formed with afunnel-shaped ope ing 26 communicating with the ball seat for the purpose of receiving oil and feeding it to the ball. I

The pressure of the valve spring 7 against the valve rod is communicated to the rockerarm and thereby exerts a constant pressure upon the ball so given for the ball ,to leave its seat accidentally. In disassembling the engine for any purpose the rocker arm is simply lifted off with the part to which it is attached, in

this instance the cover casting 27, and if desired the ball and push rod may be lifted out, there being no couplings or joints to uncouple. The push rod is held atits ends between the ball and the follower, ings being required except the follower bearing in the crank case, thus simplifying the question of lubrication and guiding of said rod. The ball being free-to revolve when the valve comes to its seat presents con? stantly new surfaces for wear so that the joint between he rocker arm and .the push .life and the parts need reing 26 receives sufficient oil from that atomized by the movement of the oiled parts v within the crank case to thoroughly lubri- "cate the ball.

I claim:

1. In a device of the class described,a

with a partially spherical that. no opportunity is no bearspring-pressed valve, a rocker armfor operating' the valve there being a partially spherical socket formed 'in said arm, apusli rod for operating said rocker arm, a'sleeve threaded upon said push rod andhavinga partially sphericalysocket in its upper end and a ball seated in th; sockets in said sleeve and rocket arm respectively.

2. In a device of the class describedfi'n combination with th iston and cylinder, thereof, a jacket surroii L aving a passage thejrethrough, acylinder zap having a'passag registering with the passage in the jacket, a spring-pressed valve in said cylinder cap, a rocker arm mounted on said cap for operating the valve, a cam for operating said I 'ocker arm anda push rod. actuated by said cam-extending-loosely through said passages and having a. balland socket joint with said arm.

3. In a device of the class described, in combination with the piston and cylinder thereof, a jacket surrounding the cylinder having a passage therethrough, a cylinder cap having a passage registering with the assa e in the 'acket, a Cover )late secured t6 said cylinder esp, a spring-pressed valve 10 in said cylinder cap, a rocker arm mounted said push rods on said cap within said cover plate for operating the valve, said rocker arm being formed with apartially spherical socket on its under side and a funnel-shaped opening on its upper side communicating with said socket, a push rod extending loosely through said passages and having a ball connection with said socket. and means for operating ROBERT 0. HENDRICKSON.

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