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if it is true,Shape of the piston is oval. So I suppose it is similar to this?
[ATTACH=full said:42940[/ATTACH]
The "Dreamair" is loaded similar to an Arbalete powered by rubber bands. The spear is placed on the guide track and pressed into the sear box in order to latch on the trigger mechanism. Then the wishbone is pulled back, however with only cable to grab onto as there are no band ferrules, a type of hook is used, except in this case the hook has a pulley. Image is taken from a larger picture of the gun, in the background the circular object is the drum of the reel. Of course the version of the gun with 2 axles requires this cocking action to be performed twice, unless you intend to shoot at less than half power with only one wishbone cocked as then the piston has only advanced by half of its full length stroke.
View attachment 42940
The "Mordem" loading bar was like a spoke-shaving tool for crafting wooden spokes on cart wheels. You seized it with both hands on either side of the section that hooked on the wishbone in two places. I will draw a sketch relying on my memory of it and hope that I have done it correctly as it must be nearly a decade since I last saw it.
Here is the sketch.
View attachment 42950
Yes, this design has been considered by others as well, only here the piston stroke is half the wishbone draw on the top deck, which is good as gun can then have a more compact pressure cylinder built into its structure. Problem still remains to seal the cable traverse of the boundary wall of the pressure chamber. Fluorocarbon polymer mono-filament may serve as the cable, but will cable surface stay smooth (no scratching) and what is its fatigue life? Pulley mounted on piston halves tension going to the wishbone compared with force on the piston face (or in this case the coil spring tension and therefore no sealing required on cable, unless keeping water out of chamber containing the spring.)Pete cable guns have problems….
New problems will be done when a lot of guns.
But I like this idea, a new type of gun.
It has many different options
I'm still thinking.
I found in his old sketches