Gear cutting – milling – or planing – Milling – Randomly manipulated – work supported – or work following device
Patent
1998-08-27
2000-03-07
Bishop, Steven C.
Gear cutting, milling, or planing
Milling
Randomly manipulated, work supported, or work following device
409180, 409183, 409178, B23C 120, E01B 3113
Patent
active
060331666
ABSTRACT:
An apparatus for the field milling of a pocket into a railroad stock rail to accommodate the precise nesting abutment of a switch point rail thereto avoids the necessity of milling such pockets under shop conditions and permits the use of Continuous Welded Rail (CWR) through railroad switches. The portable, self-propelled apparatus is adapted to the field milling of pockets into stock rails to accept the selectable placement of a movable switch rail therein and is powered by a portable power supply that may be either auxiliary or integral. The apparatus comprises components which are preferably fluid-powered. The apparatus clamps onto the stock rail and comprises a positionable milling assembly inclined at the angle necessary for milling the desired pocket into the stock rail. The apparatus moves the apparatus along the stock rail at a controlled speed whereby the milling head is fed along the stock rail during the milling operation.
REFERENCES:
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patent: 5549505 (1996-08-01), Jaeggi
patent: 5752402 (1998-05-01), Barnes
Geismar Modern Track Machinery, Inc., advertisement of Stock Rail Grinder, Model MC-3 (publication date unknown).
Bishop Steven C.
Friedman Barry I.
Koppers Industries, Inc.
Lizzi Thomas
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