US1331188A - Valve mechanism for engines - Google Patents

Description

w- D'ELA NEY. vAL'vr-z MECHANISM FOR 'ENGIINES.

APPLICATION FILED AUG.I6. 1918.

1,331,188. Patented Feb. 17,1920.

2 SH EETS-SHEEI I.

INVENTOR ATTORNEYS THOMAS WILLIAM DELANEY, OF ST. PAI J'L, MINNESOTA.

VALVE MECHANISM FOR ENGINES.

Specification of Letters Patent.

Patented Feb. 17, 1920.

Application filed August 16, 1918. Serial No. 250,152.

To all whom it may concern:

Be it known that I, THOMAS WILLIAM Dn- LANEY, a citizen of the United States, and a resident of St. Paul, in the county of Ramsey and State of Minnesota, have invented a new and Improved Valve Mechanism for Engines, of which the following is a full, clear, and exact description.

This invention relates to prime movers, and has particular reference to internal combustion or similar engines having reciproeating pistons, and hence while I show in this instance my improvement as applied to a revolving cylinder engine or one in which a multiplicity of cylinders are connected to the same crank shaft and revolving around a stationary crank shaft, I wish it to be understood that in some of its aspects my improvement is adapted for use in other types of engines than the one set forth in the drawln s.

Among the specific objects, therefore, of this invention is to provide an improved form of rotating or oscillating valve mechanism to control the admission and exhaust from the several cylinders.

A further object is to provide an improved cage or guide for a reciprocating puppet valve.

Further objects and advantages of the present construction will be outlined as this description progresses in connection with the accompanying two sheets of drawings of which Figure 1 is a vertical sectional view along the line of the crank shaft and indicating the principal parts of my engine.

Fig. 2 is a plan view of the upper part of the structure shown in Fig. 1, namely the valve mechanism.

Fig. 3 is a vertical section on the line 33 of Fig. 4:; and

Fig. 4 is a horizontal section on the line 44. of Fig. 3.

Referring now more specifically to the drawings and using reference characters so far as possible to represent similar parts of my general construction throughout a series of companioncases covering different parts of the mechanism, for the convenience of every reader of the specification, 1O indicates a crank casing in or to the curved wall of which are secured a series of engine cylinders represented by the letters a, (i. As suggested in Fig. 1 the cylinders of the series are arranged in two parallel planes so that the pistons are connected to two separate wrist pins 11 and 12 constituting parts of the same stationary crank shaft 13 suitably supported at one side of the engine upon a stationary support 13 while the driven shaft 28 connected to the other side of the engine and driven as a result of the rotation of the crank casing is supported on a fixed support 30. At one side of the crank casing, preferably adjacent to the standard or support 13, I provide an annular manifold 51 adapted to receive a supply of hydrocarbon fuel or the like from any suitably disposed carbureter, not shown, and from which an inlet pipe 52 leads to each of the several cylinders. The several pipes 52 all lead from the central hub having a flange 53 over which projects a ring 53 making a substantially gas tight connection between the relatively stationary and rotatable parts of the manifold.

As set forth in another application wherein the specific construction of the cylinders is claimed, each cylinder is preferably formed of sheet metal and in two parts connected in a plane perpendicular to the axis thereof in a flange 40 secured to or against the outer surface of the crank casing, while in the outer end of each cylinder and slightly off the center thereof is fitted my improved valve mechanism to which particular attention is asked in this specification. This mechanism includes a stationary cage 51 having on its inner end an outwardly projecting flange 55 fitted upwardly against the end 56 of the cylinder and having a beveled valve seat57 for the puppet valve 58. Said cage just outside of the flange 55 is enlarged and is provided with screw threads 59 for the attachment of a stationary sleeve 60 which like the cage in general is of cylindrical form. The inner end of the sleeve is pro vided with an inwardly projecting rim having cotiperating threads for attaching the sleeve and cage together and binding the same against the opposite faces of the end portion 56 of the cylinder. Between the main portions of the sleeve and cage is a hollow cylindrical space in which is fitted an oscillating shell 61 having an extension '62. The stationary parts 54 and 60 are provided with radially alined pairs of slots 63 and 61 respectively having ample capacity to provide quick admission and succeeding exhaust. The shell 61 is provided with two sets of slots 65 and 66, the slots of each set being adapted to register in alternation with the aforesaid slots 63Vand 64. As shown in Fig. 4 the valve shell is adjusted for admission of an explosive charge, thefslots 65 be-.

ing in registry and hence open with those slots, 63 and 64: withinthe adjacent end of the manifold inlet 52. On the other side,

however, the slots 66 are closed. The construction of the valve cage and associated parts is such that a very slight oscillation of the shell is sufficient to give ample clearance for the inlet and: discharge.

The outer end of the cage is provided with an inwardly projecting cup 67 having a tubular hub 68 constituting a guideway forthe stem 69 of the puppet valve and having a head 70 on its outer end. Surroundting'the hub 68 and bearingagainst the bottom of the cup and the head is a coil spring 71 whose function it is to close the puppet valve. This construction of. cage provides for the least amount of. dead space in the head of the engine cylinder, while at the same time there is provided free clearance for the movement of the gases. The cage and any other of the associated parts are preferably constructed of some suitable noncorrodible metal to I increase the etficienc ated a pinion'77- meshing with a larger gear '78f'fixed to, the cam sleeve, the construction "interfering with its operation. able means may be provided to actuate the levers.

and reliability of the engine.

The spark plug is indicated at 72 and lo cated in the side of the head 56 from which the valve mechanism is oflset, and between the spark plug and the sleeve is located a deflector 73 serving to prevent the exhaust gases from contaminating the spark plug or Any suitmovable parts of the valve mechanism, but

as indicated herein such devices include a cam sleeve 50 journaled for rotation around the crank shaft at one half the speedof the crank casing by means of gearing including a gear 7 4 fixed to the crank shaft and meshing with a gear 75 of the same size and carried in a ring 76. From the gear 75 is operi 83 in the wall of the cam casing 84. The inher end of the push rod is secured to a slide 85 carrying an anti-friction roller 86 for cooperation'with one of the cams on'the cam sleeve.

Another push rod 87 reciprocates through a stufling box 88 and is secured at its inner end to a slide 89 carrying a roller 90 for 00- operation with another of the cams. The

outer end of the push rod 87 bears outwardly against the end 91 of a bell crank lever 92 pivoted at 93v to any suitable bracket and to whose opposite end 9& is pivoted a link 95 attached to the shell extension '62. at the point 96. A spring 97 tends to hold the extension 62 drawn toward the right as viewed in Figs. 1 and 2 and with the inlet ports open through the slots 64 65, and 63. At each movementv oflthe roller'90 over a cam, however, the bell crank will beoscillated toward the left around its pivot 93, and the valve shell 61 will be given an oscillation in a. clockwise direction in Fig. 1 closing the ports and opening the ports 66.

I claim:

1. The combination with an engine cylinder, having an opening in its end or head, of a valve cage of cylindrical form fitting the said opening and having an annular flange at its inner end, said cage having external screw threads at its lower portion, a cylindrical sleeve around the cage having an internally screw-threaded lower end engaging the threads of the cage and clamping the head between the end of the sleeve and the flange ofthe cage, said cage and sleeve being spaced apart forming an annular shell valve chamber, a valve in said chamber, said sleeve and cage having yregistering ports therein, and said valve having ports therein adapted to be moved into and outof register with the ports in the cage andsleeve.

2. The combination with anengine cylinder having an end flange or head and a circular hole formed therethrough at one side of its center and a spark plug fitted-in the side o'f-the head from which the hole is off- -se't, of a valve cage of hollow cylindrical form' fitted in the head hole, a sleeve spaced from the main portion of the cage and serving as a means to lock the cage in lace, said cageand sleeve having pairs of radially alined slots, a shell of cylindrical form fitted in the space between the cage and the sleeve andprovided with two setsof slots,,the sets flange at its inner-end, said cage having external screw threads at its lower portion, a

cylindrical sleevelaround the cage having an internally screw-threaded lower end-engaging the threads of the cage and clamping the head between the end ofthe sleeve and theflange of the'cage said cage and sleeve being spaced apart form-ing an annular shell valve chamber, a valve in said chamber, said sleeve and cage having registering ports therein, and said valve having ports therein adapted to be moved into and out of register with the ports in the cage and sleeve, the outer end of the cage comprising an inwardly projecting cup formed with a central tubular outwardly projecting hub, a puppet valve having a stem slidably fitted in the tubular hub and cooperating with the inner 10 end of the cage as a valve seat, and a spring surrounding said hub and seated in the bottom of the cup and bearing outwardly upon thepuppet valve tending to close it.

THOMAS WILLIAM DELANEY.

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