US1243691A

US1243691A - Internal-combustion motor.

Info

Publication number: US1243691A
Application number: US8755016A
Authority: US
Inventors: James D Blayney
Original assignee: Individual
Current assignee: Individual
Priority date: 1916-03-29
Filing date: 1916-03-29
Publication date: 1917-10-23
Anticipated expiration: 1934-10-23

Description

i. D. BLAYNEY.

INTERNALCOMBUSTION MOTOR.

APPLICATION FILED MAR. 29. 1916 1,243,691..

Patented 001;. 23, 1917 UNTE TA rnn cn.

JAMES :0. BLAYNEY, on 'rononro, ammo;- CANADA.

mT'EnnAn-ooiuBUsT'IoN MOTOR.

Specification of Letters Patent; Patfitefl (hat;

Application filed March 29; 1916. Serial No. 87,550.

v To all whom it may concern:

Be it known that 1, JAMES D. B AxNEY, of the city of Toronto, in the county of York, Province of Ontario, Canada, a subject of the" King of Great Britain, have invented certain new and useful Improvements in Internal-Combustion Motors, of which the following is a specification.

This invention relates particularly to internal combustion motors of the multi-cylinder type in which all the cylinders are operatively connected with the same crank and preferably rotate about the shaft, and my object is to devise an engine in which the thrust of the connecting rods during the explosion strokes of the motor is more nearly parallelto the axes of their cylinders than in the ordinary motor, and to provide in such amotor a balanced, positivelyad tuated, slide valve system adapted for high differentv figures.

I show the motor arrangedso that the cylinders rotate and the crank shaft remains" stationary, but the improved construction is applicable to a case in which the cylinders are held from rotation while the'crank I shaft rotates.

1 is the crank shaft, whichis made hollow as shown for the introduction of the combustible mixture into the 'crank'case 2;

8 is the crank, which is common to all the cylinders. I employ a plurality of cylinders 4 equally spaced about the crank case. The crank case is preferably formed as a hollow cylinder and its axis is coincident with the axis of the crank shaft.

The curved periphery of the crank case is provided with an opening for each cylinder surrounded by a threaded collar 5. Into these collars the inner ends of the cylinders are screwed as shown. It will be noted that the axes of the cylinders are not radial I to the axis of the crank shaft as is usually the case, but are tangential to a-small circle having its center in the axis of the crank shaft. The radius of this circle, it will be noted, is not quite equalto the throw of the crank.

Each cylinder is provided with a piston 6 connected by .means of a'connectingrod 7 with the crank 3. The result of the peculiar setting of the cylinders relative to the crankshaft is that during the explosion stroke of each cylinder the connecting: rod of that particular, cylinder remains much more nearly parallelto the axis of theeyl inder than. with the ordinary arrangement glving a much more direct and effective thrust aga nstthe crank wlthless side thrust on the pistonz 'k It will be. noted leverage of the crank increases much more rapidly after the crankfpasses the dead'cen ter than in the ordinary construction with the axis of eachcylinder intersecting the axis of the crank shaft and; holds well" through the stroke. The arrangement alsol enables me to more easily introduce and operate slide-valves for the contrbl of the piston ports than with the ordinary radial arrangement' 1 f The slide valves I employ are operated from the cam shafts 8 suitablyjournaled on the crank case and each' providedjwith a gear wheel 9 meshingwith the gear'wheel ass-that the effective lO'fastonthe crank shaft. Eachcylinde'r is provided with an inlet port 11 andout let or exhaust port 12,'and"elach is con trolled a similar valve. Each valvecom prises two slides adapted to move independ- .ently" of one another. A "preferredfcon stru'ction'is show'n'in which one slide 13 is formed; of a rectangular frame with an open ing therein and the other of two plates 1'4 13. The slides' are'h'eldin lace by the cap- 15, andsuitable grooves for the reception suitably connected and embracing theframe of the slides are formed between this cap and the cylinder about the port which the valve controls.

Each slide is provided with a connecting rod 16 by which it may be operated. These connecting rods are provided at their inner ends with projections 17 preferably formed as anti-friction rollers. These projections engage the cam grooves 18 formed in a cam disk 19 secured to one of the. cam shafts 8.

Itavill be noted that the cam grooves are similar but are set in diametrically opposite positlons so that the slides are simultaneously reciprocated in opposite directions.

The result of this is that to obtain a given valve opening the cam throw is half of What it would beif a single valve were used, so that a quiclcopening of the valve to a sutlicient area may be obtained with a very small throw in any one cam groove. Each cam groove is so figured that the movement of the slides takes place during a relatively small proportion of one revolution of the,

cam shaft, so that there is no movement of theslides when any considerable pressure exists in a cylinder.

From the construction described it'will be seen that each slide valve is completely balanced, the movements of the two parts of each taking place simultaneously in opposite directions, and the slides with their operating parts being of substantially the same weight. As thevalves move, the sur faces which are exposed to the hot gases during the explosion stroke move up behind other surfaces during the exhaust and suc tion strokes, so thatthe valve surfaces are constantly rubbed clean and accumulations of carbon are entirely prevented.

If the motor is to be used with the cylinders rotating each cylinder will be provided with the usual air cooling ribs and the exhaust Will be direct to the atmosphere. The combustiblemixture is led from the crank case to the inlet valves by means of the intake pipes 20. Each cylinder will be provided with suitable spark plug 21 for ignition. A sleeve 22 bolted to the crank case serves as a shaft for the transmission of power.

What I claim as my invention is '1. In a multi-cylinder internal combustion motor, the combination of a crank casvided with a crank; a plurality of equally spaced cylinders set with their axes tangential to a circle having the crank shaft as a center; a piston for each cylinder; a connecting rod for each. piston connecting the same with the crank; a cam shaft for each cylinder crossing the crank casing adjacent the side of the cylinder closest to a radial plane intersecting the axis of the crank shaft and parallel to the axis of the cylinder,

mg; crank shaft journaled therein pro 1,2as,ce1

said cam shafts being geared to the crank shaft; an exhaust cam and air inlet cam on each of said cam shafts within the crank case; an inlet and an exhaust valve on the same side of each cylinder as the cam shaft and cams for such cylinder; and valve rods extending through the crank casing for op eration by said cams.

2. In a multi-cylinder internal combustion motor, the combination of a crank casing; a crank shaft journaled therein provided with a crank; a plurality of equally spaced cylinders set with their axes tangential to a circle having the crank shaft a center, each cylinder projecting into the easing; a piston for each cylinder; a connecting rod for each piston connecting the same with the crank; a cam shaft for each cylinder crossing the crank casing'adjacent the side of the cylinder closest to a radial plane intersecting the axis of'the crank shaft and parallel to the axis of the cylinder, said cam shafts being geared to the crank shaft; an exhaustcamand an inlet cam on each of said'cam shafts-within the crank case; an inlet and an exhaust valve on the same side of each cylinder as the cam shaft and cams for such cylinder; and valve rods extending through the crank casing for operation by said'cams. 1 I r 3. In a multi-cylinder internal combustion motor, the combination of a cylindrical crank casing having an opening in' the curved periphery for each cylinder, said openings being equally spaced and each provided with an internally threaded collar having its axis tangential to a circle having its center in the crank shaft of the motor; and a plurality of cylinders each threaded externally and screwed into one of said col lars and projecting within the crank case, the inner end of each cylinder being not on a bevel so that the cylinder Wall is short est at the side most nearly radial to the axis of the crank shaft.

Signed at Toronto, Canada, this 21st day 7 of March 1916, inthe presence of the two undersigned witnesses.

Gno. P. Maoxni, N. R. TYNDALL.

Copies of this patent may be obtained for five cents each, by addressing the Gjcmmissioner or Eatents,

Washington, 13 C.