Free trolley for power and free conveyors
AssigneeFord Motor Company
InventorsDennis W. Desilets, Raymond L. Carlson, Steven J. Dale
Life of this patent
Estimating the term…
Abstract
A power and free conveyor system is provided which utilizes a difference in height between the wipe in power trolley and the wipe out power trolley, with or without a camming down of a retractable wide dog of the free trolley, to allow the wipe in power chain to wipe in over the retractable dog without any possibility of lateral interference. Thereafter the elevation of the wipe in power trolley and the wipe out power trolley are the same. Improved stop means operating to push down the retractable dog and therefore cause disengagement of the retractable dog from the power chain dog are also provided.
Claims9
A free trolley to be supported on a free track in a power and free conveyor system, said free trolley comprising:
- a) a trolley body with transversely spaced first upstanding projections, and second upstanding projections spaced longitudinally from said first upstanding projections at the upper end of said trolley body;
- b) a moveable hold back dog rotatably secured between said first upstanding projections and engagable and disengageable with a power trolley;
- c) a retractable dog having a first position engagable with a power trolley and a second position disengageable with a power trolley and engagable with said hold back dog to completely disengage said free trolley from said power trolley upon said free trolley engaging another free trolley;
- and
- d) an actuating lever rotatably mounted at the lower end of said trolley body and rotatably connected to said retractable dog by a mounting structure, the weight of said actuating lever when used in an upright power and free conveyor system, being sufficient to create an over-counterweight condition with respect to said retractable dog.
A free trolley for use in an inverted power and free conveying system, said free trolley comprising:
- a) a trolley body with transversely spaced first upstanding projections and second vertically extending projections spaced longitudinally from said first vertically extending projections, at a lower end of said trolley body,
- b) a moveable hold back dog rotatably secured between said first vertically extending projections and engagable and disengageable with a power trolley;
- c) a retractable dog having a first position engagable with said power trolley and a second position disengageable with said power trolley and engagable with said hold back dog to completely disengage said free trolley from said power trolley upon said free trolley engaging another free trolley, said retractable dog being of sufficient weight to create an over-counterweight condition with respect to an actuating lever which is rotatably connected to said retractable dog by a mounting structure.
Dependencies are inferred from the claim text.