New Valveless Four -Cycle Gasoline Motor 



It is applicable for use in automobiles, 

 motor -boats and stationary engines 



INTAKE AND EXHAUST PORT 



BRONZE BOX ENCLOSING 

 NECTIN& ROD BALL 



HORIZONTAL RING GEAR 



TWO Grand Rapids engineers have 

 perfected a valveless four-cycle engine 

 designed to eliminate the grinding of 

 the valves and seats of the ordi- 

 nary poppet valve engine and the 

 power loss due to improper seating. 

 The piston of each cylinder turns 

 around at the same time that it is 

 moving up and down. As the 

 engine operates, the spiral gear, 

 mounted on a horizontal shaft 

 enclosed in the crank-case, turns 

 the horizontal ring 

 gear meshed with intake AND EXHAUST POCKETS 



it. Moving with 

 this are the L-arm 

 and the piston, the 

 latter moving up 

 and down on the 

 arm. The recip- 

 rocating move- 

 ment of each pis- 

 ton is secured while 

 it is turningaround 

 by means of an 

 ordinary connect- 

 ing rod which also 

 has a ball-and- 

 socket joint at the 

 top. 



The motor may be run 

 on gasoline or kerosene. 

 The piston consists of 

 two hollow concentric 

 cylinders, the closed top 

 of the outer one forming 

 the head of the piston. 

 The angular space be- 

 tween the two pistons is 

 open at the top through a short segmental 

 port in the head and at the bottom through 

 a port in the piston wall. 



By proportioning the spiral gear and the 

 gear ring so that the piston makes one 

 complete revolution to two revolutions of 

 the motor shaft, the piston port is made to 

 register with the intake port for the 

 admission of the fuel gas. The latter 

 passes up through the piston to the top of 

 the cylinder. As the piston turns around, 

 the intake is closed and remains closed 

 while the piston is moving up and com- 

 pressing the gas. It remains closed as the 



gas is exploded and as the piston is forced 



down, 

 bottom 



the 



con- 



C0MBU5TI0N CHAMBER 



PISTON 



ROTATING ROD MOUNTED OW 

 HORIZONTAL RING GEAR 



BALL JOINT 



SPIRAL 



SILENT CHAIN 



Before the piston gets to 

 of its expansion stroke, its 

 tinned turning makes its port 

 register with the exhaust port, the 

 burnt gases passing down through 

 the port in the head and out 

 through the exhaust port during 

 the remainder of that stroke and all 

 of the next upward 

 one. The cycle is 

 repeated as the en- 

 gine operates. 



The combined 

 circular and up- 

 and-down move- 

 ment of the cy- 

 linders is accom- 

 plished through 

 the spiral gears 

 mounted on the 

 horizontal shaft en- 

 closed in the crank- 

 case on one side 

 and driven off the 

 main shaft by 

 means of a silent 

 chain. One spiral 

 gear is employed 

 for each piston, 

 gear meshing with 

 the horizontal ring gear 

 around the base of the 

 cylinder. The ring gear 

 also carries the L-shaped 

 arm. 



WEAR ON BROMZE BOX 

 TAKEN UP HERE 



CONNECTING ROD 



PROCKET ON MAIN 

 DRIVE 5HAFT 



th( 



The absence of valves reduces vibra- 

 tion to a minimum and insures stability. 

 All charges are of equal proportion 



New Uses Suggested for the 

 Rubber Sponge 



RUBBER sponge is about the lightest 

 . solid body known. True, it is full of 

 holes, but it is nevertheless watertight and 

 very nearly gastight when molded int6 

 forms. For life preservers it is an ideal 

 material. As an automobile tire filler it 

 promises to transplant fillers which heat 

 up or decompose. For this use it must be 

 molded to fit the inside of the tubing. It 

 has even been suggested as a clothing 

 material for aeronauts. 



7.52 



