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CART STRUCTURE FOR DRAGLINE SYSTEMS
   
Document Number
US Patent 3693552
Issued Date
September 26, 1972
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Abstract
A cart structure is provided for dragline systems of the sort now commonly employed for material handling in freight terminals and industrial warehouses. The cart structure features an improved arrangement for related mounting of the dragline engaging drop pin and the switch actuating probe or probes, by which the latter may be lowered and latched in position for switch actuation whenever the drop pin has been lowered for dragline engagement, but are released to an upward retracted position and conditioned against lowered latching whenever the drop in is raised to disengage the dragline.
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CART STRUCTURE FOR DRAGLINE SYSTEMS - US Patent 3693552 Drawing
Drawing from US Patent 3693552
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Number of Claims:
5
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Published
September 26, 1972
Application Number
05/147,889
Filed
May 28, 1971
US Classification
104/172.2   104/88.02
Int'l Classification
B61B   10/00   (20060101)   B61B   10/04   (20060101)  
Assistant Examiner
USPTO Field of Search
104/88   104/172   104/172BT  
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3830164 - TOW TRUCK - Owned by Nutting Truck and Caster Company (Faribault, MI)

A tow truck is disclosed in which a tow pin is supported for relative movement between a conveyor-engaging position and a retracted position. The tow truck has a selector rod support for selectively and removably holding at least one selector rod in any one of at least two laterally spaced switching locations at either side of the path along which the truck is to be moved by engagement of the tow pin. A manually operable tow pin retracting member is movable between operating and retracting positions and is connected to the tow pin so that movement of the retracting member to retracting position moves the tow pin to retracted position. The selector rod support includes a fixed crossbar extending laterally across the truck above the selective switching locations for the selector rod, and the selector rod is connected by a flexible connecting member to a retaining member slidably supported on the crossbar, so that the selector rod and its associated members can be moved selectively across the truck to either side of the tow pin axis without removal of the retracting member from the fixed crossbar. The tow pin retracting member includes a movable crossbar portion which engages and displaces a portion of the flexible connecting member for the selector rod, regardless of the selected switching location of that rod, whenever the tow pin retracting member is manually operated to retract the tow pin. The displacement of the flexible connecting portion moves the selector rod from a switching position to a retracted position.

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Description
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