E-MAIL   tony@lathes.co.uk
Home   Machine Tool Archive   Machine Tools For Sale & Wanted
   
Machine Tool Manuals   Machine Tool Catalogues   Belts

Patrick Lathes
If anyone can provide photographs of an original Patrick, the Author would be very pleased
to hear from you

Manufactured at Penraevon Place and then Swinnow Lane, Bramley, Leeds, production of Patrick lathes was concentrated between the First and Second World Wars of the 20th Century. A wide range of both very simple plain-turning models - the "Wonder" - and more ambitious screwcutting models, such as the  "Popular" and 41/2" x 16" gap-bed "Standard" and "Special" - shown on this page - were produced, the firm claiming that over 40 different styles of our 41/2" lathe are made to suit every requirement. The "Special" was particularly ambitious and, with 26.5-inches between centres, an apron the provided power sliding and surfacing (and a geared-down hand drive) backgear, screwcutting and an Acme-form leadscrew with clasp nut engagement this lathe enjoyed a specification that would have made it a genuinely useful in any repair workshop. Few can have been sold and in recent years only one survivor has been found. With numerous advertisements taken in the model-engineering press during the 1920s (they began appearing soon after the end of WW1 in 1918) the company appeared to enjoy some considerable success during that decade.
Steadily evolved to become stronger and more capable (resulting in a confusion of design features and models), all Patrick lathes were designed to suit the pocket of the (relatively) impecunious amateur and were of conventional specification and ordinary quality. However, in comparison with their competitors, for example Portass in Sheffield, Patrick did attempt to offer a slightly better specification than was usual in their class with, for example, the frequent use of split nuts to grasp the leadscrew instead of the more usual - and much cheaper - dog-clutch. Another feature employed on many screwcutting Patrick lathes was a second small swing bracket on the changewheel drive to allow the insertion of an extra gear to generate left-hand pitches. Another advantage of owning a Patrick was the range of accessories: while other makers of small lathes offered the usual fixed and travelling steadies few bothered to list, like Patrick, a robust swivelling milling slide, toolpost grinder, draw-in collets for the spindle, a capstan unit for production work, headstock-mounted collets and (almost unbelievably) a gear-cutting (wheel-cutting in clockmaker's parlance) attachment.
With its typically English-style, flat top and square edges the bed might have meant easy production and subsequent regrinds but the narrow, wingless saddle (only as wide as the cross slide) had a minimum bearing area against the rear shear and would have been both less stable under heavy cuts and likely to have promoted quicker wear than one designed along traditional lines. Also typical of English practice, the T-slotted cross slide was designed to allow the easy mounting of a milling slide or other accessories - a great advantage in a machine that would have been pressed into use for a wide variety of tasks. However, when using a vertical milling slide as much cross-slide travel as possible is required - yet the Patrick always had its cross-feed screw thrust plate flush with the end of the casting instead of being 'spaced out' - thus severely restricting travel. Both top and cross slide lacked any form of micrometer dial, making life even harder for the inexperienced operator. Interestingly, because the lathe had a rather generous centre height for its overall dimensions, the makers had to indulge in some creative engineering to get the cutting tool up to centre height. Their interesting solution, instead of using just a thicker cross slide castings, was to mount the top slide on a (square-based) raiser block fitted with a circular T-slot that allowed rotation through 360 degrees. 
Screwcutting versions could be supplied with or without a backgear, the remarkably large 3/4"-bore headstock spindle running in simple, spilt plain bearings of which several have been discovered with white-metal (babbit) rather than bronze liners.
With a barrel-feed arrangement identical to that used on a Myford ML7, the No. 1 Morse tailstock, could be set over for taper turning - but the with barrel clamped by the crude method of a screw bearing directly against it..

1921 and Patrick announce their basic "Popular" and "Special" models. The "Special" was a top-of-the-range offering with an unusually heavy stand, a proper geared apron (providing power sliding and surfacing) and an especially long bed. Note the robust swivelling milling slide and toolpost grinder.
More than one version of the Popular was manufactured, some having a detachable headstock others with bed and headstock cast as-one.

A rare survivor--a Patrick "Special" in original, unmodified condition

Extremely rare in this condition, a beautifuly original and unrestored 4 1/2" x 16" gap-bed screwcutting Patrick from the 1920s. This model is without backgear, an omission that, whilst it saved the original owner money, resulted in a compromised lathe that lacked versatility.

Treadle stand. Although small electric motors were widely available pre-WW2 they were expensive, often adding 25 to 40% to the cost of a new machine. One slightly cheaper option - and essential where there was no electricity supply - was the ubiquitous treadle drive.

Although of sound construction - and heavy build - the lathe was still built with an eye to economical production and penny-saving: no micrometer dials on the feed screws, only three gib strip adjustment screws on the top slide and a solid tailstock barrel.

In many respects the Patrick resembled the equally utilitarian lathes manufactured in London by the Relm Machine Company

Almost certainly built in the late 1920s or early 1930s, and showing some improvements over the earlier model, this 4" x 16" gap-bed, backgeared Patrick has a headstock pulley to take inch-wide flat belt in place of a round-rope "gut drive", a more robust, rectangular-form apron with a geared drive direct onto the leadscrew and a heavier changewheel bracket. It has also been neatly adapted to carry a Boxford top slide--the carriage and leadscrew handwheels are also not original. Note the swing bracket on the changewheel drive to allow the insertion of an extra changewheel to generate left-hand threads.

Patrick "Wonder", "Popular" and "Standard" lathes
At least two versions of the little Patrick plain-turning "Wonder" lathe were produced, one with simple cantilever bed in a 2-inch centre height and the other with a bed having feet at both ends. Each of the types was manufactured with a separate headstock - or with bed and headstock cast as one - with a number of different between-centres capacities offered as indicated by the advertisement reproduced below. All models appear to have shared components and were designed along very simple lines to give the hard-up enthusiast the chance to own a small but robust machine with a useful range of movements. Although not backgeared in standard form (though this was available as an extra) and having only two flat-belt or round "gut" drive speeds, the headstock had unusually long bearings that promised a long life. The slide rest was of the compound variety and hence so much more useful than the "single-swivelling" type so often found on machines intended to compete at the bottom end of the market. The economical construction of the compound, built with steel-bar ways, was very similar to that on the contemporary Drummond "Little Goliath" lathe and subsequently on the very popular the Emco Unimat SL1000 and DB200 of the 1950s and 1960s. The lathe was available as an ordinary plain-turning model with the compound slide rest positioned by hand and locked down, or driven down the bed by a leadscrew placed centrally below the bed ways and activated by a large handwheel at the tailstock end (the remains of such a machine being shown below). This arrangement, though simple, provided the operator with a sporting change of getting a decent finish and was a good deal easier to operate than  a carriage handle operating driven by a gear that engaged directly against a bed-mounted rack. Unfortunately, instead of employing the well-separated front and back  faces of the bed to guide the saddle the Patrick used the narrow and close-together inner and under surfaces of the gap between the front and back ways.  As a consequence, the saddle rested on the full width of the front way - but on only part of the rear..

The 2-inch Patrick "Wonder" model

Patrick 3 and 4.4-inch models were identical apart from centre height

A simple Patrick plain-turning lathe from the 1920s--note the distinctive tailstock and shape of the handwheels. Unfortunately, instead of employing the well-separated front and back  faces of the bed to guide the saddle, the Patrick used the narrow and close-together inner and under surfaces of the gap between the front and back ways. As a consequence, the saddle rested on the full width of the front way - but on only part of the back.

The economical construction of the compound, built with steel-bar ways, was very similar to that on the contemporary Drummond "Little Goliath" lathe and subsequently on the very popular the Emco Unimat SL1000 and DB200 of the 1950s and 1960s.

The Patrick illustrated above and below is not completely original, nor complete: the headstock pulley has been changed from one using three narrow Vees (to take a round-rope leather "gut drive) to a standard aluminium V-type to take a Z-section belt - though later Patrick lathes did use cast-iron flat and V-belt pulleys. The carriage handwheel may not be the maker's - and the screwcutting changewheels are not in place.

Because the lathe had a rather generous centre height for its overall dimensions, the makers had to indulge in some creative engineering to get the cutting tool up to centre height. Their interesting solution, instead of using just a thicker cross slide casting, was to mount the top slide on a (square-based) raiser block fitted with a circular T slot that allowed rotation through 360 degree. 
Note that the block under top slide is bolted down across one diagonal only.

The square edge to the bed might mean easy production and a simple regrind - but the narrow, wingless saddle (only as wide as the cross slide) had a minimum bearing area against the rear shear and would have been both less stable under heavy cuts and likely to have promoted quicker wear than one designed along traditional lines.

The tailstock barrel was threaded on its outer surface and passed through a threaded handwheel. The handwheel was retained by a two-part circular thrust washer located in a grove machined in the surface of its forward boss; an almost identical arrangement was employed for many years on the very popular Myford ML7.

Rear view of the tailstock showing the circular, two-part barrel retaining washer and the simple - and horrible - screw-in barrel clamp.

E-MAIL   tony@lathes.co.uk
Home   Machine Tool Archive   Machine Tools For Sale & Wanted
   
Machine Tool Manuals   Machine Tool Catalogues

Patrick Lathes
If anyone can provide photographs of an original Patrick, the Author would be very pleased to hear from you