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GB Patent: GB-190,612,485
Improvements in or Relating to Machines for Grinding Tools, Milling Cutters, Reamers, and the Like
Patentees:
Alfred Herbert (exact or similar names) - Coventry, Warwickshire, England
Percy Venables Vernon (exact or similar names) - Coventry, Warwickshire, England

USPTO Classifications:

Tool Categories:
metalworking machines : grinders : tool grinders

Assignees:
Alfred Herbert - Coventry, Warwickshire, England
Percy Venables Vernon - Coventry, Warwickshire, England

Manufacturer:
Alfred Herbert Ltd. - Coventry, Warwickshire, England

Witnesses:
none listed

Patent Dates:
Applied: May 29, 1906
Granted: May 16, 1907

Patent Pictures: [ 1 | 2 | 3 ]
Espacenet patent
Report data errors or omissions to steward Joel Havens
"Vintage Machinery" entry for Alfred Herbert Ltd.
Description:
Abstract:

The speed ratios of the movements of the two parts of a compound slide in a machine for grinding tools, milling-cutters, reamers, taps, saws, worm hobs, counterbores, &c. are made interchangeable in order to reduce the necessary adjustment of the work, so that in operating upon two faces at an angle to one another, what is the quicker or longitudinal movement to feed the work across the grinder in operating upon one face becomes the slower or transverse movement to adjust the depth of the cut in operating on the other face, and vice versa. The variable gear may only be used to obtain different speeds in one direction. Each portion of the slide is operated by a pinion gearing into a rack on the slide, the pinion being either driven directly from the hand-wheel K, or more slowly from another hand-wheel through a worm M and worm-wheel L, or other gearing, which may be clutched to the shaft J. The worm-wheel L is mounted on a sleeve L<1> loose on the shaft and is clutched against a conical shoulder P on the shaft by a nut S, working on the screwed end J<1> of the spindle which can slide through the hand-wheel K for the purpose: The angular motion of the swiveling plate carrying the work is reduced by this device.

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