US1118686A - Valve and valve-gear of internal-combustion engines. - Google Patents

Description

A. B. SALWAY.

VALVE AND VALVE GEAR or INTERNAL COMBUSTION ENGINES.

APPLICATION FILED NOV. 22, 1913.

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ALBERT EDWARD SALVI'AY, OF TAIBACH, "PORT TALBOT WALES, ASSIGNOR OF ONE HALF TO GEORGE ISAAC SALWAY, OF SEATTLE, WASHINGTQN.

VALVE'A ND VALVE'GEAR OF INTERNAL-COMBUSTLON ENGINES.

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Specificationet Letters Patent. iate ited Nov, 24 1914 Application filed November 22, 1913. Serial No. 802.515.

Toall whom it may concern I Be it known that I, ALBERT E. SALWAY, a

gear for internal 'combustioi'i-engines of the type wherein two exhaust valves are employed on one cylinder, said valves co-aet mg with the objects, among others, of oh,- taining quicker release of the exhaust gases, cooler enginehigher enginespeed and more poiven- According to the present invention these desirable-results are obtained means of auxiliary exhaust devices adapted to be lit- 7 ted to my existing'ai'id already constructed fourstroke' internal combi'istion' engine with side-by'side valves; without alterations, one or t o-valves being placed inn cylinder, one inplace of th'e' inlet valve cap, and the other in place of the exhaust valve cup,-"'the valves being operated from the engines-cxisting exhaust valve. spindle,-or the engines exhaust valve tappet and therefore not interfering with the valve timing gear. V

The invention is illustrated bythe accompanying drawing as applied to a single cyl- Hide-K;

ln carrying the invention into effect, the usual ca which is seiuwed over the exhaiist vali'e is removed as are also the colspindle.

A long collar 16 with an extendin and 1G is now secured by means of a lotter 17 to the-lower end of the. exhaust valve spindle a and the auxiliary exhaust valve 2 of the same sizoas that of the existing exhaust 'valve phu-rd in its position in the valve seating l which is now screived into the ope-ning left by the rei ioval of the foremcn'tioned cap, a copper or asbestos \vasher being inserted l'ietvveen its flange and the cylinder head to client a gas-tight joint.

The. dome locking nut '7 lien placed over the lower part S" of the valve dome 8 with a split loekingring (5 shaped to lit the valve seating interposed therehctween and the domepassed over the valve spindle 2" RIKl POSIUOIlCd in the valve ringand the locking out 7 scrcwedon said ring locking tension 801 the dome is' screwed the top end of tap-petrod uide 23; t 1e same bein' locked in position nut and throug said guide is passed the tappet rod 22,'the same at its lower end being adjustably St'i'mYQCl into the tappet rod sleeve l8vand locked there by nut 18, said sleeve 18 at its lower end hein g forked to take thercbetween 'ihe dome to said valve seating. 3 the" valve spring held hetu'een the dome 8 and collar l by the cotter 5. In the arm or (ix-t0 the end of the arm 16' of the collar 16,

said arm ll heing secured to said'fork hv bolt and nut or equivalent devices 18".

The upper end of the tappetrod is 5 provided with a fork 22 into which takes and bears one end '27 of the rocker 27- pi'votaliv mounted in any suitable manner at 18 to the rocker carrier 25, the same being screwed into the dome top and locked there-. to by nut. while the other arm 27 oft-he lorhei' 27 is adapted to bear on the center of the auxiliary valve stenrQ, a. play of'oneto said.

sixteenth of an inch being allowed arm '27".

The auxiliar exhaust pipe 11 is beveled so as to fit on the usual exhaust pipe-band Iv and is held thereto by clip b and screws b screwing into the me'talof said auxiliarycxhausl pipe ll, the upper end of which is locked to the extension 8 of the valve dome S lav means of split ring L0 and locking nut 9 which screws on to the end of the extension 8".

From an inspection of the drawing it will.

he readily understood that as the valve (1 .rises so is the auxiliary valve 2 depressed an amount correspondingto the rise of the ins valve 0, such depression being effected by the intermediary of the arm 16, tappet 9.2

and rocker 27, and, as the areas of valves a and 2 are equal, there obtains an exhaust of double capacity, part passing by way of exhaust pipe 1/ and part by auxiliary exhaust ll. 5

The auxiliary exhaust valve can appliml to any uumhvr o5. cylinders an engine mu) have, fitting one to each cylinder, and \vhrru-in cases such as twin cylinders the exhaust gases pass away in opposite directions the valve domesare duplicated; all

way of the wardly projecting arm, and means operable by the arm for efiectingmovement of the other of said valves g.

2. In a valve mechanism of the character described, a body provided with spaced ports, a valve for each port, a rocker lever supported for moving one valve, and an adJnstable connection between the other of said valves and the rocker lever for imparting motion to the latter on movement of the last specified valve.

3. In a valve mechanism of the character described, a body provided with spaced ports, a valve for each port, spring means normally retaining the valves closed, an out wardly extending arm on tlie'stem of one valve, a rocker lever supported for opening the other valve, and a connection between the arm and lever for effecting movement of the latter on operation of the first specified valve.

4. In a valve mechanism of the character described, a body provided with spaced ports, a valve for each'port, spring means I normally "retaining the valves closed, an out Wardly extending arm on the stem of one Y valve, a rocker lever supported for opening the other valve, being normally free thereof,

and an adjustable connection between the arm and lever for effecting movement of the latter on operation of the first specified valve;

5. In a valve mechanism of the character described, a body having spa'ced ports, valves for the ports mounted for opposing movement, an outwardly extending arm on the stem of one valve, a rocker lever supported for opening the other valve, a sleeve guide supported by the body, and a connection arranged in the guide and between the arm and lever for transmitting motion to the letter on opening the first specified valve. 7

6. In a mechanism of the character described, 11 body provided with spaced ports, valves for said ports, means normally free from one valve and operable by the other valve for engaging the first valve for effecting simultaneous movement of said valves, and means for operating the second named valve.

7. In a mechanism of the character described, a body provided with spaced ports, valves for said ports, means operable by one valve for operating the other valve, said means being normally free from the second named valve and adjustable relatively to the latter, and means for operating the first named valve. V

Signed at Cardiff, Wales, this 10th day of November, 1913.

ALBERT EDWARD SALWAY.

Vtitnesses:

Loam A. Lsmuor, I FLORENCE H. LrrrLE.

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