Motion translating mechanism

A reciprocating to rotary motion mechanism including in combination

• (a) a crankshaft having a crank arm with an eccentric pin integrally secured to said crank arm, said crankshaft mounted so that said crank arm and said eccentric pin rotate about a crankshaft axis,
• (b) a circular linkpiece having a center axis parallel to said crankshaft axis, said circular linkpiece having an opening positioned eccentric to said circular linkpiece center axis,
• said crank arm eccentric pin positioned within said circular linkpiece eccentric opening in a manner that allows relative rotary movement between said eccentric pin and said circular linkpiece in a path in a fixed plane,
• (c) at least one first thrust converting means secured to said circular linkpiece for rotation therewith,
• (d) a displacement member mounted in a sliding abutting relationship between a pair of walls for reciprocating motion therebetween,
• (e) said walls containing internally projecting second and third thrust converting means,
• (f) said displacement member having a circular opening in said fixed plane, said circular opening having a central axis at right angles to said fixed plane,
• (g) said circular linkpiece is positioned in mating relationship within said displacement members circular opening,
• (h) said first thrust converting means of said circular linkpiece coming into consecutive mating engagement with said second and third thrust converting means during the reciprocating travel of said displacement member,
• said displacement member reciprocating motion is converted to rotary motion of said crankshaft about said crankshaft axis through the relative motion of said displacement member, said circular linkpiece and said integrally secured eccentric pin of said crankshaft.