Lubricating apparatus for conveyor chains
OwnerHenry F. Hafnerinventor
Life of this patent
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OwnerHenry F. Hafnerinventor
Estimating the term…
An apparatus for lubricating a chain has a follower bar which rides the rollers between the rows of chain links on each side of the chain, and accordingly maintains a predetermined lateral position with respect to the chain. Oil nozzles are carried by the follower bar and are directed toward the links. The nozzles are supplied with oil from a pneumatically operated ejector which is controlled by a fluidic control device including an air jet and a fluidic sensing unit aligned with the jet. The chain passes between the nozzle and the fluidic sensing unit and is positioned such that the rollers in it periodically interrupt or disperse the air jet so that the air jet at one instant passes through the chain and impinges on the sensing unit and at another instant is dispersed by a roller. The restoration of the air jet after it is dispersed is sensed by the sensing unit which directs a signal to the ejector, causing the ejector to discharge a metered amount of oil each time a roller passes through the air jet. The oil nozzles are positioned such that the oil so delivered flows onto the chain at locations where adjacent links in each row are joined.
In a chain system including a moving chain having links arranged in two distinct spaced apart rows which are parallel and extend longitudinally of the chain, and cross pieces extending transversely of the chain and connecting successive links in the rows, all of the cross pieces being parallel and each of the rows being continuous so that no gaps exist between adjacent links of the rows, the chain having a tendency to move laterally as it moves in the normal longitudinal direction of chain advancement;
In combination with a chain having connected links arranged in two distinct spaced apart rows which are parallel and extend longitudinally of the chain, and cross pieces connecting the links and extending transversely of the chain, all of the cross pieces being parallel and narrower than the links so that the links project beyond the cross pieces, the chain having a tendency to move laterally as it moves in the normal longitudinal direction of chain advancement;
Dependencies are inferred from the claim text.