US1318354A

US1318354A - Puuxooraph co

Info

Publication number: US1318354A
Authority: US
Publication date: 1919-10-14
Anticipated expiration: 1936-10-14

Description

A. M. CARPENTER.

EXPLOSIVE ENGINE.

APPLICATION FILED AUG. 4, I911.

Patented Oct. 14,1919.

2 SHEETS-SHEET I 1!: COUJH-BA "MAP" 6a., WASHINGTON, n. c.

A. M. CARPENTER.

EXPLOSIVE ENGINE.

APPLICATION FILED AUG. 4, 1917.

Patented Oct. 14, 1919.

nAr-ll c0., WASHINGTON, m c

ALVIN 1VI. CARPENTER, .OF INDIANAPOLIS, INDIANA, ASSIG-NOR OF ONE-HALF TO WILLIAM R. CHAPIN, OF INDIANAPOLIS, INDIANA.

EXPLOSIVEENGINE.

To all whom it may concern:

Be it known that I, ALVIN M. CARPENTER, a citizen of the United States, residing at Indianapolis, Marion county, and State of Indiana, haveinvented and discovered certain new, and useful Improvements in Explosive-Engines, of which the following is a specification.

My invention relates to internal combustion engines and its object is to provide improved means for controlling the inlet of the explosive gases to the engine cylinder and the exhaust therefrom by mechanism employing a valve which obviates the objections due to puppet and sleeve valves, which is self-adjusting to its seat and which is connected to driving mechanism adapted to permit said self-adjusting action of the valve, to save power in operation and to avoid a binding action of the valve on its seat and insure an even bearing thereon and free operation thereof.

lVith these objects and others in view my invention is embodied in preferable form in the construction and arrangement herein-' after described and illustrated in the accompanying drawings.

In these drawings Fig. 1 is a vertical section through two cylinders and. the head of the engine showing my valve improvements applied thereto and showingthe'piston on the left hand cylinder and the valve thereof in intake position and the piston and valve of the right hand cylinder in compression position, the section being taken on the line 1-1 of Fig. 5; Fig. 2, a. view similar to Fig. 1 showing the piston and valve of the right hand cylinder in firing position, the section being taken on the line2-2 of Fig. 6; Fig. 3 a sectionon the line 3-3 of Fig. 2, showing the piston of the cylinder and the valve thereof at the point of starting on the compression stroke; Flg. 4;, a plan view partlyin section on the line H of Figs. 1 and 2; Fig.5, a section on the line 5-5 of Figs. land 2'; Fig. 6, a section on the line 66 of Figs. 1 and 2; Fig. 7, a section) on theline 7-7 of Figs. 1, 2 and 3, looking up; Fig. 8, asect on on the line 8-8 of Figs. 1, 2 and 3, looking down; Fig. 9, a detail cross section of the valve. and part of itsseat; Flg. 10, a deta l top plan view of a valve driving gear; Flg. 11, a detail vertical section of the gear shown in Fig. 10; Fig. 12, a detail top plan vlew of Specification of Letters Patent.

Patented Oct. 14, 1919.

Application filed August 4, 1917. Serial No.-184,450.

one of the valves; Fig. 13, a detail edge view is the crank shaft. Above the combustion chamber 7 of the cylinder is mounted a cylinder head 8 within which is formed a suitable water jacket and inlet and exhaust passages for the gas. This cylinder head is adapted to extend along the entire set of cylinders and to be made integral with the frame of the engine.

Each cylinder is provided with a rotary disk valve 9, which is adapted to be continuously rotated in frictional contact with the-seating portion 10 of the cylinder head. This seat portion 10 is provided with a series of ports, four being shown, disposed around the. vertical central line of each: cylinder, 11 designating the exhaust ports, and the other two ports 12 constituting the intake means. The valve 9 is provided with two ports which are adapted to register with a pair of exhaust ports and a pair of inlet ports, alternately.

I The stem 13 of the rotary disk valve 9 constitutes a journal or trunnion extending through the cylindrical bearing portion 1 1 of the head 8. l

The upper end of the trunnion stem of the valve is provided around its circumference with a series of gear teeth which are adapted to receive similarly formed internal teeth in the hub of a rotary driving dog 15, which is adapted to he slipped over the upper end of the trunnion stem. By means of these teeth the valve is rotated, and also the dog may be adjusted circularly relatively to the valve for the purpose of adjusting the timing of'the intake and exhaust of each cylinder relatively to the valve of the other cylinders. The driving dog 15 is provided with diametrically opposite radial prongs or arms which enter radial slots 24 formed in the driving gear 16, by means of which engagement the dog 15 is driven. The slots 2 1 are preferably wider than the prongs of the dog in order to permit the latter to have a slight circular play or lost motion.

' The hub of the gear 16 surrounds a boss 17 1 indicates.

of the cylnidr 'heau afid theievver face' of the gear rests upon the upper face of the cylinder headp The dog 15 rests on the upper face of said boss'17 and its radial arms thereof project above the bottom of the gear, thus permitting of a tilting-movement of the gear at an angle to the horizontal, with-' out "tilting" the valve By means of the radially engaging parts of .the dog and gear,

a free radial movement of said parts relaarrangement affords a floating driving con nection between the driving means and valve. The valve stem is thus maintained on a true axis without variation therefrom by deviations in the alinement of the axis of the gear,- and the valve is permitted to adjust itself evenly to its seat, its seating pressure being determined substantially only by the pressure of the gases; This floating actionis aided by the suspended projection of the arms above the base of the gear, this relation assuring that the dog receives pressure only against the rear faces of the. arms, leaving the gear, free to tilt without causing atilting movement and consequent binding action of the valve. The driving dog 16 is held rigidly in place on the stem 13 by means of a headed screw 18 which enters the stem. Lapped

joints

20, 21 and 22 are provided at the various junctions of the parts.

In, the construction shown in the draw ings, an inlet port and an exhaust port are provided on each side 'of a diametrical line throughthe valve and valve seat, and the diflerent valves of the respective cylinders are so arranged relatively that the inlet ports of the valves of two adjacent cylinders will be disposed on opposite sides of said diameter and at the same angles to saiddiameter, whereby said intake ports may directly communicate by a single tributary passage 32 withthe main intake conveying channel 30,- and also a pair of exhaust ports 11 may communicate by a single tributary passage 31 with the main exhaust conveying channel 29. The intakepassageways of the end cylinders and also the intermediate passageways leading from the intake ports passing through the exhaust chamber and the "walls of such passageways are thus heated by the exhaust gases, so as to increase the rapid evaporation of the combustible charges drawn in.

1 The valve seat 10 is provided with shallow grooves 33 extending from near the circumference toward the center, the purpose of said grooves being to permit the gases in the combu'stioii chaimber to be partly e'ofiv'e' ed to the outer surface of the floating disk valve .9, between said valve and its seat in order to tend to partly balance the pressure in the combustion chamber of the valve and thus to lessen the frictional contact between the valve and its seat so as to thereby decrease the wear between these parts andjamount of power required to .rotate the valve.

The drivinggears 16 of the respective cylinders are adapted toengagesoas to form a continuous line of meshing gears and they" are driven by a pinion 28, at the upper end of a vertical shaft 25, which is provided at its lower end with a worm wheel 26, which is adapted to mesh with a worm 27 on the crank shaft 6. In the construction shown,

in which four ports in the valve seat are eme ployed and two ports in the valve, it is necessary that the worm gears be of such size, number of teeth and pitch of teeth as to revolve the driving gear 16 once to each four revolutions of the crank shaft 6.

In Fig. 2, the piston of the left hand cylinder is shown as at the point offcompletion of half of the exhaust stroke and this cylinder shows the two ports of the disk valve 9 in registry with the two exhaust ports 11 in valve seat 10. As the crank 6 revolves 90 from the position indicated in Fig. 2, for completing the latter half of the exhaust stroke, the disk valve 9 revolves'22; ,on

Fig. 1,- completing the latter half of the exhaust movement of the valve the full movement of which requires 45 of the rotation of the valve. starts to move from said 90 position, the ports of the disk valve 9 begin to register with the intake ports 12 of the valve seat 10, the piston, drawingin a'charge of ex plosive mixture through the intake ports, and as the crank shaft moves through the 180? required to complete the intake stroke, the rotating valve will move through a distance of 45, and during the compression and firing strokes of the piston the'valve will move through 90 and then the exhaust ports of the valve seats will again register with the ports of the valves, until the position shown in Fig. 2 shall have been reached the second time when the valve will have rotated 180 for 720 of the crank shaft.

Having thus described my invention, what I claim is V i 1. In an internal combustion engine, in combination with an explosion cylinder, a head therefor, gas ports for said cylinder in said head, a rotary disk valve in said cylinder below said head having ports adapted to register with the head ports, said valve having a stem extending through said head, driving means. radially positioned with respect to said' stem and circularly adjustable means for connecting said stem As the crank shaft being non-contacting radially topermit radial and angular play of the driving means relative to the valve, substantially as described.

2. In an internal combustion engine, in combination with an explosion cylinder having gas ports, a rotary disk valve controlling said ports, a valve stem, a driving gear surrounding said stem, a rotatable driving dog carried by said stem and bearing on the engine structure above the plane of said gear, said dog having arms extending radially therefrom above the gear, and projecting means on the gear to engage said arms to rotate the dog, substantially as described.

3. In an internal combustion engine, in combination with an explosion cylinder having gas ports, a rotary disk valve controlling said ports, a rotatable driving member for said valve, a valve stem, a circularly adjustable dog mounted on said stem and having radial arms to engage said rotatable driving member, substantially as described.

4. In an internal combustion engine, in combination with an explosion cylinder having gas ports a ported rotary disk valve controlling said ports, a head mounted above said cylinder, a valve stem journaled in said head, said stem provided with circumferential teeth, a driving dog detachably mounted on said stem and having teeth to engage the valve stem teeth, a rotatable driving member, said dog having means projecting freely radially thereof to enga e said rotatable driving member without radial contact with said member, substantially as described.

5. In an internal combustion engine the combination of a cylinder head provided.

with gas ports, a rotary disk valve for controlling said ports, a boss formed on the cylinder head through which the valve stem extends, a gear mounted to rotate freely on the boss, means for actuating the gear a circularly adjustable radial arm extending from said stem, and means carried by said gear for loosely engaging said radial arm, substantially as set forth.

6. In an internal combustion engine the combination of a cylinder head provided with gas ports, a rotatory valve for controlling said ports, a gear carried by said cylinder head, means for rotating the gear, an adjustable radial arm carried by the valve, and means carried by the gear for loosely engaging the radial arm to actuate said valve, substantially as set forth.

In witness whereof, I have hereunto set my hand and seal at Indianapolis this 27th day of July, A. D. nineteen hundred and seventeen.

ALVIN M. CARPENTER, [n s.]

Witnesses:

H. P. Doonrrrnn, M. L. SHULER.

Copies of this patent may be obtained for five cents each, by addressing the 0ommissioner 0! Patents, Washington, D. 0.