Controlling translation

Details Controlling translation Controlling translation

1980-03-03

1982-05-11

Herrmann, Allan D.

Machine element or mechanism

Control lever and linkage systems

Multiple controlling elements for single controlled element

33 1M, 74 8914, 74384, 74425, 248178, 248287, 248661, 350 82, 350 84, G05G 1100, G02B 2124

Patent

active

043287131

ABSTRACT:
A completely mechanically operated microscope bridge includes rapid rough positioning, fine positioning, coarse focusing and fine focusing with an automatic locking system locking the microscope at the position set by the operator whether power is on or off. In the focusing mechanism the drive slips when the microscope hits the viewing platen or if the microscope rhomboid is caught under the cross beam or overhanging arm on the light table while being raised. A brake prevents the microscope from being manually pushed into the viewing platen. In the x and y plane movement mechanisms torque limiting clutches prevent damage to the drive mechanisms, and a slip clutch allows turning of a positioning knob without driving when the bridge reaches the end of travel.

REFERENCES:
patent: 2121457 (1938-06-01), Vanbergen
patent: 2259811 (1941-10-01), Fregeau
patent: 2624252 (1953-01-01), Judd
patent: 2723776 (1955-11-01), Jacobson
patent: 2813434 (1957-11-01), Stuebs
patent: 2951560 (1960-09-01), Smellie
patent: 3241243 (1966-03-01), Speer
patent: 3475075 (1969-10-01), Stone, Jr.
patent: 3606693 (1971-09-01), Grimes et al.
patent: 3774311 (1973-11-01), Stemple

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