Machine element or mechanism – Mechanical movements – Reciprocating or oscillating to or from alternating rotary
Patent
1977-08-08
1980-05-20
Scott, Samuel
Machine element or mechanism
Mechanical movements
Reciprocating or oscillating to or from alternating rotary
74425, F16H 2702
Patent
active
042033292
ABSTRACT:
The present invention relates to a device for converting a uniform circular movement into a variable or uniform longitudinal movement. The device comprises being arranged an assembly of rods forming the generatrices of a right cylinder having a circular section. The rods may rotate with a constant angular speed. The rods are grooved with notches at equal or different distances between the notches, which grooves house a wire or cable, wound helicoidally on the cylindrical body established by the rods, so that upon the latter rods rotating, the cable generates a longitudinal movement in the direction of the axis of the rods. The movement is uniform on the stretches in which the grooves are equidistant, and is in such a form that if the distance between grooves varies in accordance with differential elements, the longitudinal movement is obtained whose velocities in relation to time would vary from zero to a maximum and again to zero. This makes it possible to establish a distribution of speeds that would respond to a pre-established law of velocities.
REFERENCES:
patent: 2638277 (1953-05-01), Miller
patent: 3365974 (1968-01-01), Lieberman
patent: 3377879 (1968-04-01), Shiwaku
Ratliff, Jr. Wesley S.
Scott Samuel
Technoresinas Espanola, S.A.
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