Waterman engine- generator

Has any one ever seen another Waterman generator.Very unique-4 cycle, NO VALVES Yes thats right. Its done with a ported rotating sleeve.

I haven't seen one in person, but Alan King's "Farm Electric Plant, Monograph No.9" shows a 1917 Unilectric made by Waterman Motor Co. The 1920 specs. in the back of the same book list it as a single cyl.,3HP at 1500 RPM, 1 KW, 110 VDC. Anyone who is serious about collecting lightplants will find this book is a bible. Alamo and Willys also had so called "valveless" engines. Alamo used a rotating sleeve and Willys used reciprocating sleeves. I have two of the Willys, but so far the Unilectric and Alamo have escaped my greedy clutches.

Thanks for the reply Gus. I've seen several Willis engines but this one doesn't use ecentrics to operate the sleeve valves. The cylinder sleeve is geared to the crank and uses PORTS at the proper time to intake & exhaust. I didn't know Alamo made a Valveless 4-Cycle?How did it Operate?Who has one of them.

The Alamo was at the same auction in Maryland that I bought one of my Willys. It brought $300 plus abot 6 or 7 years ago. I'd have bought that too, but the Willys cleaned me out. It is shown in King's Monogram No.9 as the Silent Alamo. The Willys is called the Silent Knight. I corresponded with someone who has a Waterman, if I find it I'll pass it along to you. GUS