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US Patent: 1,436,522
Taper Boring Machine
Patentee:
Howard A. Pedrick (exact or similar names) - Bala, Montgomery County, PA

USPTO Classifications:
82/1.4

Tool Categories:
metalworking machines : drilling and boring : portable metal drilling machines
metalworking machines : drilling and boring : horizontal boring mills

Assignees:
Howard A. Pedrick - Bala, Montgomery County, PA
Albert D. Pedrick - Oldmans, Salem County, NJ
Pedrick Tool & Machine Co. - Philadelphia, PA

Manufacturer:
Pedrick Tool & Machine Co. - Philadelphia, PA

Witnesses:
none listed

Patent Dates:
Applied: Oct. 27, 1920
Granted: Nov. 21, 1922

Patent Pictures: [ 1 | 2 ]
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"Vintage Machinery" entry for Pedrick Tool & Machine Co.
Description:
Abstract:

One object of this invention is to provide a novel mechanism for conically boring or turning the inside surface of a tubular structure, which shall be simple and substantial, as well as convenient to operate; the invention more especially contemplating a machine for cutting out a tapering cavity, which may be readily and quickly adjusted to vary the angle of the board or turned surface to the longitudinal axis of the structure operated on.

Claim:

The combination in a taper boring machine of a crank; a boring bar having one end pivoted to said crank; a bearing having a spherically curved recess; a spherically curved member mounted in said recess and formed to support the opposite end of the boring bar while permitting its longitudinal movement therethrough; and means for turning the crank.

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