email: tony@lathes.co.uk
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Denford Viceroy "Educator" &
Multipurpose Lathes
Models: T.D.S.1.L.S., T.D.S.5.B.G., T.D.S.3.M.W, 
T.D.S. 2/3 C.M.+W.L., 240 & 250 (etc)


Viceroy Home Page   Viceroy Synchro, 280 & Enterprise Lathes

   
Viceroy Wood Lathes   Viceroy Milling Machines   Viceroy Shaper

T.D.S.-1.L.S., T.D.S.5.G.B., T.D.S.3.M.W. Educator & Type 250

Viceroy Drills   

Handbooks and Parts Manuals are available for
most Viceroy Metal Lathes, Viceroy Wood Lathes 
and Viceroy (AEW) Milling Machines and
other Viceroy Publications

Given a number of confusing model numbers, Denford's range of less-expensive lathes intended for the education market was based upon a single 5" x 24" or 40" machine very similar to the original TDS 1/1 - but usually without the power shaft for sliding and surfacing feeds, and often without backgear and screwcutting. Like all Viceroy lathe, spindles ran in taper-roller bearings with the nose carrying a 1.5" x 8 t.p.i. thread; when fitted with a bowl turning attachment, the left-hand (outboard) end of the spindle was threaded 1.5" x 9 t.p.i. left-hand - this specification applying to the TDS6 dedicated wood-turning lathe (and its various sub-models), the "Educator" and its replacements, the TDS3, TDS SM.W and Model 250..
Most frequently encountered model of the genre is likely to be the original "Educator", a dual-purpose wood and metal lathe that was produced in several forms with most supplied in a very basic, plain-turning specification (the code for these was T.D.S.4). However, others were more comprehensively equipped with backgear and screwcutting (usually coded
T.D.S.1) - while others even appear to have been little more than price-reduced machines from the main range. Although some carried badges proclaiming Educator others did not - though the Model type can generally be found stamped (as part of the Serial Number) into the tailstock-end of the bed. All appear to have shared a common headstock assembly, some with 4 belt-driven speeds, others with 8 of 60, 85, 135, 200 in backgear and 410, 570, 930 and 1350 in direct belt drive. Early models had motors listed as being either 0.5 or 0.75 h.p. though later versions were all catalogued with a 0.75 h.p. (3-phase or single phase) with 1.5 h.p. as an extra-cost option. In addition, a number have been found with a slightly different range of 75 to 1300 r.p.m., probably a result of using up unwanted parts from the spares department. A push-button starter and Dewhurst reversing switch, both built in flush to the front face of the stand, were part of the ordinary electrical equipment. The late (and seldom-seen) T.D.S.1.L.S., Type 250 and Mk.2 T.D.S. 3M.W lathes were the most highly-specified versions with backgear and screwcutting, though these often lacked the large bowl-turning unit seen on many of the other models. A few were fitted with a most odd arrangement for the carriage drive that used either a belt or chain - the latter a method resurrected from the Victorian era and as seen, for example on the American Shepard lathe - though it did occasionally surface in the 20th century with examples including some cheaper models of Czechoslovakian Volman lathes and also the British Jen-son - though the latter was really rather different in design and function. The drive on some versions of the "Educator" range incorporated a dog clutch on the leadscrew, allowing it to be quickly flicked in and out of engagement by a lever positioned in the lower right-hand corner of the headstock's front face. The T.D.S.5.B.G. was backgeared but with the power feed removed and the T.D.S.3.M.W. a special plain-turning metal lathe fitted with an outboard bowl-turning rest adapted from the T.D.S.6.W.L. dedicated wood lathe. This lathe was also sold, in late form, badged as the Model 250, though so far no examples have been found with screwcutting - a shame, as such a machine, being able to manage a wide variety of tasks in one compact and reasonable-priced package would, if offered on the model-engineering, home or small repair-workshop market, have sold rather well..
If you have one of the more unusual combined wood and metal lathes - especially if fitted with the chain or belt drive - the writer would appreciate photographs to include in the Archive..

The 5" x 24" or 40" "Educator" as sold during 1961. This is a very highly specified version with backgear, screwcutting (4 to 160 t.p.i.) and fitted out with a range of accessories including coolant, fixed and travelling steadies, a carriage micrometer stop, thread-dial indicator and a 4-way toolpost

Inside the headstock showing the "single-lever" backgear arrangement - a system that allowed the students to destroy the gears with the movement of just one free-to-move control.

Tumble-reverse drive and changewheels on the screwcutting models.

A typical Viceroy under-drive countershaft system was employed with both initial
and final drive to the headstock spindle by a segmental Brammer belt

The carriage was identical to the lower-specification machines from Denford's ordinary range

Left: the TDS3 MW a later version of the "Educator" fitted out as a plain-turning metal and wood lathe with a large-capacity bowl-turning unit. Below, its almost identical replacement badged as the Model 240. Like all Viceroy lathe, spindles ran in taper-roller bearings with the nose carrying a 1.5" x 8 t.p.i. Thread; when fitted with a bowl turning attachment, the left-hand (outboard) end of the spindle was threaded 1.5" x 9 t.p.i. left-hand - this specification applying to the TDS6 dedicated wood-turning lathe (and its various sub-models), the "Educator" and its replacements, the TDS3 and Model 250.

Last of the line: the Viceroy Model 240, a 5-inch centre height by 24 inches between centres plain-turning but backgeared lathe fitted for both basic metal and wood turning.  The lathe was supplied complete with a swivelling top slide and a 4-way toolpost. The very large capacity bowl-turning unit made use of the much slower backgeared speeds.

End view of the very late-model Viceroy Model 250

Late model Viceroy  Model 250 5" x 24" - a basic but well-built backgeared and screwcutting lathe intended for use in sc school and college use

Viceroy Home Page   Viceroy Synchro, 280 & Enterprise Lathes

   
Viceroy Wood Lathes   Viceroy Milling Machines   Viceroy Shaper

T.D.S.-1.L.S., T.D.S.5.G.B., T.D.S.3.M.W. Educator & Type 250

Viceroy Drills   


Handbooks and Parts Manuals are available for
most Viceroy Metal Lathes, Viceroy Wood Lathes 
and Viceroy (AEW) Milling Machines and
other Viceroy Publications


Denford Viceroy "Educator" &
Multipurpose Lathes
Models:
T.D.S.1.L.S., T.D.S.5.B.G., T.D.S.3.M.W, 
T.D.S. 2/3 C.M.+W.L. , 240  250 (etc)

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