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Cowells Lathes & Machine Tools

Cowells Shaper   Early Cowells Lathes
 
High-speed Milling & Dividing Heads
   
Cowells Vertical Miller

An Operation Manual is available for the Cowells Lathe 

Cowells, based near Colchester in England, make a range of well-built, miniature machine tools and accessories popular with knowledgeable watch, clock and instrument makers throughout the world. Items made in the past and some still manufactured today,  include small lathes, shapers, vertical millers and dividing and high-speed milling heads. Construction has always been from top-grade materials and close attention obviously been paid to the detail of their design and specification - for example, all the handles (apart from those on the miller) dials, levers and gib strips are in metal, not the cheap plastic of similar-sized lathes from European and Far Eastern manufacturers. The first Cowells lathe can trace its origins back to the Sheffield-made Flexispeed of the 1940s - a popular small machine that continued in production, in various forms, for nearly fifty years. Over many years, and several changes of ownership, the Flexispeed became, variously, the Simat 101, Meteor, Hector and Norfolk and finally the Perris PL90, in which form it was adapted, almost unaltered, as the first Cowells model and is still offered today as the basic Model 90E. The "Norfolk" name was also used on early miniature stand-mounted Cowell's lathes.
For such small lathes (all are 1.75" centre height by 8" between centres) Cowell's are unusual in incorporating many of the features, and hence the usefulness and adaptability, of larger machines; consequently, the
Model ME (also with its origins in the Perris PL90) is designed for smaller model engineering use, has a proper backgear assembly (clustered at ach side the left-hand headstock bearing) with the 12 speeds spanning 60 to 2100 rpm; the bed has a gap, the cross slide is extra long and T slotted, a swivelling top slide is fitted as standard and - most usefully -  the saddle traverse incorporates an adjustable, automatic disengage mechanism.  On recent models, beautifully finished, chemically blacked zeroing micrometer dials (with the crisp, computer laser etched lines and numbers coloured white) are fitted to all screw-driven movements: compound slide assembly, tailstock barrel and the leadscrew handwheels
Fitted with a double-step pulley on the motor, the rear-mounted countershaft uses miniature V-belts and gives six speeds - the whole drive system being neatly and safely enclosed under a hinged plastic cover. The machine is also mounted on a rigid cast-aluminium base with recesses at each end to facilitate lifting, neatly built-in switchgear and a machined flat at the back that can be used as a mounting for a dial-test indicator or scribing block. A wide range of accessories is available including steadies, collets (including horological types) 4-way and rear toolposts, a vertical milling slide, dividing and indexing units, a roller-filing rest, etc. - and all at surprisingly reasonable prices. 
Hand-built on a modular system, it is possible for the makers to combine features from different models in the range - hence the plain-turning clock and watchmakers' version, the
Model CW, with its hardened spindle and opposed bronze-bearing headstock can be supplied with the screwcutting mechanism from the ME model to give a power feed along the bed. An earlier version of the CW was the Model HS (presumably standing for High-speed) a model that, like the CW, was powered by a thyristor-controlled motor to an give infinitely-variable speeds of up to 4000 r.p.m.
Cowells also make a range of other useful machines including a tiny vertical miller, miniature jig saws, a wheel and pinion cutter, a small dividing head --and, in the past, also manufactured a useful little hand-operated shaper..

Cowells 90CW 1.75" x 8" variable-speed clock and watchmaker's lathe driven by a thyristor-controlled motor. The latest, 21st century incarnation of the Cowells, it has a headstock of  "traditional" high-speed design where, due to the hardened spindle and opposed-cone bronze bearing, revolutions of up to 4000 per minute can be safely maintained for long periods.  The drive pulley has a ring of 60 indexing holes with a spring-loaded detent arm to lock the spindle. Both headstock and tailstock spindles (the latter lever-driven for sensitive feeds) accept standard 6 mm horological collets. Note the motor, held on 6 anti-vibration rubber mounts.

Cowells 90ME--a miniature backgeared and screwcutting lathe driven from a rear-mounted countershaft

Black micrometer dials with the crisp engravings coloured white

As on many lightweight pre-WW2 lathes the backgears are clustered at each side of the left-hand spindle bearing


A long T-slotted cross slide is fitted as standard to all models

Micrometer dials are fitted to the tailstock barrel and the leadscrew handwheel

Cowells 90CW clockmakers' lathe fitted with the maker's powered and self-contained Wheel and pinion cutter, a device described by the factory as suitable for cutting steel gears, clock wheels and pinions, the milling of keyways, slots, flats, and the drilling of cross holes. The spindle runs in opposed cone bearings and is driven from a 1-phase motor - the toothed belt running over 3-speed pulleys. It is supplied complete with a vertical milling slide, a 150 mm diameter division plate, and a headstock detent mechanism.

An early backgeared and screwcutting Cowells as developed from the Perris PL90. More pictures here. Still manufactured in a virtually unchanged form, the lathe is now listed as the basic model in the Cowells range, the 90E

Cowells variable-speed Model HS

Top view of a Cowells ()HS

An early version of the backgeared and screwcutting 90ME mounted on the maker's self-contained bench stand unit

Vertical milling slide with self-contained high-speed collet head

Cowells Shaper   Early Cowells Lathes   Milling & Dividing Heads   Vertical Miller

An Operation Manual is available for the Cowells Lathe 

Cowells Lathes & Machine Tools
email: tony@lathes.co.uk
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