US1439932A - Engine - Google Patents

Description

3,439,932 J, R. WARREN.

ENGINE, FILED DEC- 24. I920. 3 SHEETSSHEET 1 v 1,439,932 J. R. WARREN.

ENGINE, FILED sac. 24 1920 3 SHEETSSHEET 2 2; Q7711 l? Warren .wx PV I naz Patented Dec, 2 6, i922,

the r JonN n. WARREN, orenANn RAPIDS, MICHIGAN, ASSIGNOE 'ro HIMSELF, DONALD J. CAMPBELL, or MUSKEGON HEIGHTS, MICHIGAN, CHARLES E. IonNsoN, PAUL n.

IBEARDSLEY, AND men P. nAMM, ALL or MUSKEGON, MIcnIoAN, 'rnusrnns.

n oINn A ucaiidn filed December as, 1920. Serial Nb. 422,934.

To all whom it may concern:

Be it known that 1, JOHN R. VVARREN, a citizen of the United States, residing at Grand Rapids, in the county of Kent and State of Michigan, have invented new and useful Improvements in Engines, of which the following is a specification. A

The present invention relates to engines; and its object is to provide improved means for lubricatir the i'otary valve which controls the admission of the expensive or explosive fiuid to the cylinder of engines; and further, to provide improved means for mounting the cylinder of such an engine in resilient relation to such a valve. I

These, and any other objects hereinafter appearing are attained by, and the invention finds preferable embodiment in, the structure hereinafter particularly described and illustrated by the accompanying, drawings, in which Figure 1 is aside view of an internalcombustion engine embodying my invention, certain parts'being broken away;

Figure 2 is a transverse vertical sectional view thereof taken on planes corresponding to line 2- -2 of Figure 1;

Figure 3 is a. transverse horizontal sectional view of three of the engines cylinders taken on a plane corresponding to line of Figure 1; I

Figure 4 is a view in perspective of a bushing or sleeve surrounding the valve;

Figure 5 is a view in perspective of a block carrying three of the engines cylinders and a portion. of the valves casing;

Fl. ire 6 is a topplan view ot'a portion of said block," and Figure 7 is a view of a portion of the lower part of one oi? the engines cyllnders showing- 'its resilient mounting sectioned on a vertidal plane corresponding to line 'Z-? of l igures 2 and 8.

My invention, at least in its broader aspects, is applicable to engines or various kinds, but in theemhbdiment thereof chosen for illustrationby the drawings and for detailed description in the body of? this specification, my invention is shown in connection with a tour-cycle type internal-combastion engine having six cylinders, 1, 2 and 3 thereof appearing in diametrical longitudinal section in idigure 1, the invention being particularly well adapted for use in internal-combustion engines. The cylinders have pistons 43;, c5, 6, furnished with connecting rods Y, '8, 9 for operating the cranks 1.0, 11, 12 respectively, on the crank shaft or engine shaft 57.- At their upper ends, the cylinders have -oorts 61, 62, 63 respectively for the admission of the operating fluid thereinto and for the expulsion of the products of combustion therefromL These cylinders are supported (as hereinafter described) on the frame, designated generally 14., of the engine and are slightl movable relatively thereto in their longitudinal direction. The rotary valve 15 for controlling-the admission of the operating fluid to the cylinders and for permitting the expulsion of the products or" combustion therefrom, rotates in a hearing or valve chamher in a valve casing, designated generally 16, having openings communicating with the cylinders through the cylinders said ports respectively. This valve casing. cornprises two portions, being longitudinally bars 17 supported intermediately said lugs by the shoulders 81 of the screw bolts 82 threaded in lugs 22 on the engine frame. These bolts may be turned to increase or diminish the resilient tension of the bars 1? by adjusting the cylinders indesired position relatively to the portion 18 of the valve casing. By reason of this mounting the two portions 18, 19 of the valve casing may be pressed toward each other (and adjustably so), and the valve casings lower or second portion 19 (or tantamount thereto, the casings bushing 34c) is yieldingly held in contact with the valve 15 itself.

To prevent leakage between the two portions of the valve casing, a bushing or sleeve 34 in said casing surrounds the rotary valve Ill and has openings 3'5 which register with the the slits of one series being in staggered relationto those of the other series-,said slits not registering with the joint between the casing s two portions. It will be seen that, although the rotary valve 15 (and the bushing with it) may expand through heating,

it will not binder stick in its chamber,-in-

asinu'ch as the resilient bars 17 will permit the cylinders and theiloweror second portion 19 of the valve casing to slightly move relatively to the "frame and the casing; 111p per or first portion 18 and thus expan valve chamberin' a vertical direction sufilciently to prevent such-binding or sticking, at the samev time retaining the valve sufficiently tight in its chamber, particularly in the region of the cylinders ports, to prevent leakage Inasmuch as valve leakage is principally occasioned by pressure in the cylinder due "to the expansive fluidtherein (in the case of steam engines and the like) or by the firing of; theexplosive fluid therein (in the case of internal-combustion engines),

-or'and in less degree-by the fcompression stroke of internal-combustion engines, it

will be seen that this very pressure is the force which tightens the valve at the very time it tends to leak, and thatwhen such pressure expends itself such tightening of the valve ceases. The valve is hollow, having longitudinally extending passages 24', 25

to which the fluid is supplied from a vent 26in the block 27. carrying the cylinders, the fluid thence passing through a series of inlets 51 through the valveswall, and to each cylinders port through diametrically opposite openings 28, 29 in the valves wall, the products of combustion being discharged from each cylinder through diametrically opposite outlets 30, 31 through the valves wall and into its longitudinally extending passages 32, 33 opening at the ends of the valve into exhaust pipes 53. These inlets,- openings and outlets through the valves wall are so disposed angularly of the valve that thesequence of supply to and exhaust from the several cylinders is properly timed.

For lubricating the valve, thelower or second portion 19 of the valve casing has an inlet 90 leading to its interior so that oil may be supplied thereto from a pipe 91 leading from a suitable source of supply, as the.

chamberin the crank casing 92, oil being forced through said pipe by suitable means (not shown)- for exerting the necessary.

pressure, This inlet 90 opens into a chan- 93 in the inner surface of the casings lower portion 19, such channel extending in other.

bus'hings interior to lubricate the valv'e. 7

These orifices 9 1, 95 are preferably so spaced longitudinally of the bushing as to not register with the bushings openings 35 into the valves ports.

It will be seen that by the'tiring stroke of the engine the lower portion 19 of the valve casing being thereby pressed upwardly will slightly compress the bushing 34 in a vertical direction; which bushing, being held at its upper side as by the pin or set screw 7 101 against rotation and being somewhat resilient, willwslip at its outer surfacead: jacent the channel 93 and orifices 94, 95 in the bushings lowerhalf-on the inner surface of the lower portion'19' of the valve casing. This slipping bacleand forth, although slight, being-repeated at each firing-stroke of the engine causes the oil to be worked 'between the bushing and the valve c'asings lower portion, thence passing through the orifices 94, 9 5 to the valve itself. The oil returns to the crank cases chamber 92 through the passage 100.

As shown in Figure 1, the engines crank shaft carries a skew gear 38 meshing with'a skew gear 39 on' the vertical shaft 40, between the third and fourth cylinders andro: tatable in bearings 41 on the frame, said shaft having a skew gear 42 meshing with a skew gear 43- drivingthe rotary valve 15, whereby the valve is rotated: by the crank shaft the gear ratios of the skew gearsbeing such as to properly time the valves rotation to the crank shafts rotation. It will be seen that this arrangement and disposition of the means for rotating the valve is peculiarly compact and positive and eliective inv operation. A water jacket surrounds the cylin- 1 ders, the water containing space being. designated 4 1, 45;, water being supplied by-the.

pipe-4L6 and discharged by the pipe 47. a To permit the free'circulation of the water he tween'the upper portion 44 of the water jacket and its lower portion to, short tubes 48 are carried by either the cylinder block #27 or the frame 14; and sli'dably bear in the A compressible packing 49 is insorted at the free ends of these tubes. Openings for the cylinders; spark plugs are indicated at 50. Various features shown in the drawings and-hereinbetore described form the subject matter of Patent Number 1,417,590, May 30,

192 to myself and Alfred Brechting and are not claimed as apart of the present invention.

The invention being intended to be pointed out in the claims, is not to be limited to or by details of construction of the particular embodiment thereof illustrated by the drawings or hereinbefore described I claim:

" 1., In an engine; a frame; a cylinder lon-' supplying inlet leadin to said second portions interior; a fleiri lebushing between the valve and the valve casing having an opening registering with said port and an orifice for the passage of oil from said inlet and between the bushing and said second portion to the bushings interior said orifice being spaced angularly from said inlet; a valve rotatable in said casing and adapted to open and close said port.

' 2.. linan engine; a frame; acylinder longitudinally movable relatively thereto a rotary valve casing comprising a first portion supported in connection with the frame, and a second portion supported in connection with the cylinder and having a port communicating with the "cylinder and a channel in its inner surface extending in the longitudinaldirection of the valve casing and an oil-supplying inlet leading to said channel;. a flexible bushing between the valve and the valve casing having an opening registering with said port and an orifice for the passage of oilfrom said channel and between the bushing and said second portion to the hushings interior, said orifice being spaced angularly from said channel; a valve rotatable in said casing and adapted to open and close said port.

3. In an internal-combustion engine; a. frame; a plurality of cylinders longitudinally movable relatively thereto; a rotaryvalve casing comprising a first portion sup" ported 1n connect1on with the frame and a second portion supported in connection with the cylinders and having ports communicat ing with the cylinders respectively and a channel in its inner surface extending in the longitudinal direction of the valve casing and an oil-supplying inlet leading to said channel; a flexible bushing between the valve and the valve casing having openings registering with said ports respectively and orifices for the passage of oil from said channel andbetween the bushing and said second portion to the bushings interior, said orifices being spaced angularly from said channel; a valve rotatable in said casing and adaptedto open and close said ports.

4-. in an engine; a frame; a cylinder; a ronary-valve casing comprising a first portion supported in connection with the frame and a second portion supported in connection with the cylinder and having a port communicatingwith the cylinder; a resilient bar having means for removably holding the cylinder. against. lateral movement thereon; threaded means intermediate the frame and said bar for adjusting the bar in desired position relatively to'said first portion of the valve casing.

In testimon whereof I have hereunto set my hand at (xrand Rapids, Michigan, this 9th day of December, 1920.

JOHN R. WARREN.

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