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Title: CRANE POSITIONING APPARATUS

An apparatus is described for automatically accomplishing the final accurate horizontal positioning of a crane after the latter has been placed to within 1/8 in. of its selected position. For this purpose there is provided a tiltable member on the crane mast for lowering into contact with a stationary probe. Misalignment of the tiltable member, with respect to the probe as the member is lowered, causes tilting of the latter to actuate appropriate switches that energize motors for bringing the mast into proper position. When properly aligned the member is not tilted and a central switch is actuated to indicate the final alignment of the crane.
Authors:
;
Publication Date:
OSTI Identifier:
4140870
Report Number(s):
US 2942736
Resource Type:
Patent
Resource Relation:
Other Information: Orig. Receipt Date: 31-DEC-60
Research Org:
Originating Research Org. not identified
Country of Publication:
United States
Language:
English
Subject:
ENGINEERING AND EQUIPMENT; CRANES; MACHINE PARTS; MOTION; MOTORS; PATENT; SERVOMECHANISMS; SWITCHES; TRANSPORT