Measuring device for a figure

Details Measuring device for a figure Measuring device for a figure

1985-06-24

1986-10-21

Stearns, Richard R.

Geometrical instruments

Area integrators

Planimeters

33 1C, 33123, G01B 526, G01B 732

Patent

active

046177400

ABSTRACT:
A measuring device for measuring characteristics of a drawing in which a carriage is supported by a pair of wheels for reciprocal motion on a line. A carriage pulse generator produces pulses proportional to the angle of rotation of the wheels rotatably supported at one end. A tracing lever extending from the carriage has a tracing implement on the other end. A tracing lever pulse generator generates pulses proportional to the rotational motion of the tracing lever. A phase signal generator receives signals from the tracing lever pulse generator and generates a phase angle signal received by a calculator in the carriage. The phase angle signals and pulses from the tracing lever pulse generator we used by the calculator to determine one or more characteristics of the drawing being measured by the tracing implement.

REFERENCES:
patent: 2993278 (1961-07-01), Lory
patent: 3121956 (1964-02-01), Philbin
patent: 4246703 (1981-01-01), Robinet
patent: 4253239 (1981-03-01), Houck
patent: 4383301 (1983-05-01), Morita et al.
patent: 4528754 (1985-07-01), Houldsworth
Aristo, "Planimeters, Integrators, Pantographs", 3-1959, pp. 101-108.
Biddle, "New Universal Planimeter", Science, 10-1913, p. XI.

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