Mechanical point locator

Details Mechanical point locator Mechanical point locator

1980-03-10

1981-09-29

Martin, Jr., William D.

Geometrical instruments

Gauge

Millstone

33143M, 33486, B25H 700

Patent

active

042914680

ABSTRACT:
A mechanical point locator and distance divider provides for quick and reliable division of a distance into an integral fraction of the distance, being useful for drafting, with maps or charts, in the construction industry and around the home. Leading and trailing indicators are slidably mounted on a base or housing, and a cord and pulleys appropriately interconnect them to cause the trailing indicator to move at a speed and for a distance which are an integral fraction of the speed and distance the leading indicator is moved by the operator. Provision is made for assuring the return of the trailing indicator according to the same desired relationship with respect to the return of the leading indicator. Half-point and third-point locators are specifically described, but the principles of the invention enable the provision of any fractional point locator wherein the distance desired to be located is an integral fraction of a distance to which the device is applied.

REFERENCES:
patent: 2291552 (1942-07-01), Lalonde
patent: 2770046 (1956-11-01), Wichmann
patent: 2816366 (1957-12-01), Barlow
patent: 2998659 (1961-09-01), Yaworsky
patent: 3151396 (1964-10-01), Junkins
patent: 4238885 (1980-12-01), Lendi et al.

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