Machine element or mechanism – Mechanical movements – Rotary to or from reciprocating or oscillating
Patent
1976-07-26
1978-04-25
Wyche, Benjamin W.
Machine element or mechanism
Mechanical movements
Rotary to or from reciprocating or oscillating
F16H 1906
Patent
active
040856216
ABSTRACT:
Traversing mechanism for use in any type of machine in which part of the machine is required to reciprocate between two predetermined limits of travel. The mechanism includes a carriage which is attachable to that machine part, and an endless belt which, in operation, is continuously driven in one direction and has two parallel runs located on opposite sides of the carriage. A rotatable coupling wheel is mounted on the carriage and has an odd number of radially projecting lobes arranged around its periphery so that in one rotational position of the wheel one lobe engages one run of the belt, and in another rotational position of the wheel another lobe engages the other run of the belt. The arrangement is such that in each rotational position of the wheel there is only one lobe in full engagement with the belt. Stops are provided at the extremities of the carriage travel, and each time a stop is engaged the resulting interaction between the belt and the wheel causes the wheel to rotate to adopt a new position such that the drive imparted to the carriage alternates between the two belt runs. A sliding escapement is provided to restrain the wheel against inadvertant movement from an operative position, and that escapement is moved to release the wheel each time a stop is engaged.
REFERENCES:
patent: 1774356 (1930-08-01), Cloud
patent: 2517546 (1950-08-01), Deakin
Ratliff, Jr. Wesley S.
Repco Research Proprietary Limited
Wyche Benjamin W.
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