Device for linear measurement

Details Device for linear measurement Device for linear measurement

1974-11-11

1976-05-25

Martin, Jr., William D.

Geometrical instruments

Area integrators

Electrical

33 1M, G06G 100

Patent

active

039583368

ABSTRACT:
For accurate measurement of the linear movement of a traveller relatively to a low-torque rotary transducer, a cylindrical pulley on the transducer is driven by a wire which extends between this pulley and an idler pulley to embrace both; the free ends of the wire are fastened to the traveller to form a taut loop of length exceeding the maximum stroke of the traveller. A box-section cover enclosing the driving system (except for a lengthwise slot for passage of the traveller) is closed at one end by the transducer casing and at the other end by a box carrying the idler pulley; slotted holes for screws fastening the cover to the transducer allow the wire loop to be pulled taut. The wire loop passes through slits in cleaning plates adjacent to each pulley. Plates on the traveller locate it in the cover after initial assembly and until the device is set up for use.

REFERENCES:
patent: 3182399 (1965-05-01), Price
patent: 3372485 (1968-03-01), Mangus et al.
patent: 3449833 (1969-06-01), Dzula
patent: 3518661 (1970-06-01), Wingate

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