Machine element or mechanism – Mechanical movements – Rotary to or from reciprocating or oscillating
Patent
1974-07-15
1976-04-27
Scott, Samuel
Machine element or mechanism
Mechanical movements
Rotary to or from reciprocating or oscillating
F16H 2512
Patent
active
039526046
ABSTRACT:
The motion converting device includes a double-threaded power shaft having two right-hand channels, two left-hand channels, and which is driven by a piston connected thereto. A power gear positioned in the path of movement of the rod has a central bore through which the shaft is received. The power gear is mounted in a guide block which holds the gear against movement axially of the shaft and which permits the gear to rotate. The guide block also has a bore through which the shaft extends. A spline connection operatively connects the shaft to the gear and permits the shaft to move axially of the power gear. First and second directional sleeves are mounted in the guide block at positions spaced axially from the power gear and are adapted to receive the rod therethrough. Each of the directional sleeves has at least one cam therein adapted to engage in one of the channels. The guide block holds the sleeves against axial movement while permitting them to rotate. The motion converting device also includes a locking mechanism which can take several forms and which is adapted to automatically and alternately lock one of the sleeves against rotation during linear movement of the connecting shaft on a power stroke or a return stroke of the piston so that the power gear will be driven in one direction during the power stroke and so that continued rotation of the power gear in one direction at the end of the power stroke will drive the connecting rod in the opposite direction for the return stroke of the piston. The locking mechanism is also adapted to disengage both sleeves to neutralize reciprocating motion.
REFERENCES:
patent: 602356 (1898-04-01), Parker
patent: 1316558 (1919-09-01), Cannon
patent: 1713343 (1929-05-01), Leahy
patent: 2084321 (1937-06-01), Corradino et al.
patent: 2757547 (1956-08-01), Julin
patent: 3233473 (1966-02-01), Winter
Ratliff, Jr. Wesley S.
Scott Samuel
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