US Patent: 3,788,158 - Trip Device for Use in a Feed Mechanism of a Machine


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US Patent: 3,788,158

Trip Device for Use in a Feed Mechanism of a Machine

Patentee:

Arthur Jose Firth (exact or similar names) - Colchester, England

USPTO Classifications:

192/56.61, 74/405, 74/412R

Tool Categories:

metalworking machines : metalworking machine mechanisms

Assignees:

600 Machine Tools, Ltd. - London, England

Manufacturer:

Not known to have been produced

Witnesses:

none listed

Patent Dates:
Applied:	Feb. 22, 1972
Granted:	Jan. 29, 1974

Patent Pictures:

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Description:

Abstract

In the quill feed mechanism of a milling machine, a trip device which disconnects the drive if the quill meets an unyielding obstruction, comprising a pivoted housing carrying a gear which forms part of the feed mechanism, an angled face clutch and a latch mechanism arranged so that when an abnormal torque is imposed on the said gear, the latch mechanism disengages so that the housing pivots to disconnect the feed drive.

U.S. Patent Documents

2,885,901 May 1959 Firth

229,993 July 1880 Flenniken

1,250,362 December 1917 Schellenbach

1,760,430 May 1930 Mirrielees