Grace's Guide

British Industrial History

Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 143,372 pages of information and 230,037 images on early companies, their products and the people who designed and built them.

Sharp, Roberts and Co: 1835 Slotting Machine

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JD Roberts Slotter01.jpg
Note the multi-vee guides on the vertical ram, the adjustable crank, and the cam for working the automatic incremental feed for moving the table in the X or Y axis
The small vertical rod is worked by the cam to operate the pawl and ratchet feed device
JD Roberts Slotter02.jpg
The table can be pivoted for cutting keyways, say, at an angle
JD Roberts Slotter05.jpg
Detent for rotary table

Note: This is a sub-section of Sharp, Roberts and Co

Richard Roberts of Sharp, Roberts and Co is regarded as having developed the first slotting machines, a type of metal-cutting machine tool which came to play a vital role in engineering manufacture.

An 1835 example is prominently displayed at Manchester's Museum of Science and Industry.


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