email: tony@lathes.co.uk
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Drummond A-Type 4-inch Round Bed Lathe
- an early model fitted with backgear -

Copies of the Maker's Literature, Screwcutting Charts, etc. are available

Drummond Round-bed Home Page

Type 1 backgear
Very rare indeed, this first version of the Round Bed Drummond (fitted with bolt-on spindle bearings), has been equipped with what we shall call the
Type 1 backgear. Taking advantage of the separate bearing housings, the designer has made new, one-piece units with an extension at the back of each to carry the backgear shaft. Although this arrangement did away with the separate bearing caps (an illustration of the original design is on this page) the new units would, presumably, have had some means of setting the bearing clearance…. or perhaps not. In addition to the new bearings it was also necessary, in order to make room for the backgears, to replace the original 3-step flat-belt pulley with a 2-step of considerably narrower proportions - though it appears that a previous owner has modified this to take either a round rope or narrow V-belt..





Drummond Round-bed Home Page

Copies of the Maker's Literature, Screwcutting Charts, etc. are available


email: tony@lathes.co.uk
Home   Machine Tool Archive   Machine-tools Sale & Wanted
Machine Tool Manuals   Catalogues   Belts   Books  Accessories

Drummond A-Type 4-inch Round Bed Lathe
- an early model fitted with backgear -