Geometrical instruments – Area integrators – Electrical
Patent
1976-12-22
1978-10-31
Stearns, Richard R.
Geometrical instruments
Area integrators
Electrical
33174PC, 364560, G01B 500
Patent
active
041226070
ABSTRACT:
An instrument for measuring the position of points along a straight portion of a preformed rod, tube or pipe element with respect to a reference point. The measurements may be converted to vectors representing the straight portions, and used to generate instructions to a bending machine for manufacturing a reproduction of the preformed element, hereinafter generally referred to as a tube. A column is attached to a carriage which moves along one edge of a work table on which the tube is supported. The column has an upper end at which a first arm is pivoted for movement in a vertical plane. A second arm having a carrier mounted at its end is pivoted to the first arm for further movement in the vertical plane. The carrier swivels about the axis of the second arm and has an offset end portion on which a tube feeler is mounted. The feeler has surfaces for engaging the preformed tube. When the tube is engaged by the tube feeler, projections of the axis of the second arm and the axis of the tube feeler intersect at the centerline of the tube. Resolvers provide signals indicating the location of the carriage and the angles of the two arms, collectively defining the position of the intersection of the axes projections. The operator manually adjusts the tube feeler into engagement with the tube and a switch is actuated to record the resolver signals.
REFERENCES:
patent: 3438133 (1969-04-01), Brault
patent: 3636635 (1972-01-01), Lemelson
patent: 3944798 (1976-03-01), Eaton
Stearns Richard R.
Teledyne Industries Inc.
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