UWG 1 - a picture showing the motor with a speed-reducing gearbox on its end and the countershaft arm with the pulleys removed; the final drive to the gear on the end of the headstock spindle was by a small gear formed as the inner potion of the nearest pulley pin. By combining the various sets of motors, standard and optional-extra pulleys and final gear drive the speed range could be made to span an impressive  11 to 7385 rpm. The hole between the two column clamping bolts was tapped and designed so that a bolt screwed into it forced the socket walls apart slightly to allow the column to be more easily inserted and removed.

The Hommel UWG 1 set up for simple turning work and driven by the 113o/113oA single-speed motor with a shaft protruding from both ends; one shaft was driven directly at 2860 rpm the other fed through a reduction gearbox with an output speed of 650 rpm; the motor was designed to be turned round in its mounting and was provided with a built-in reversing switch to set the direction of rotation correctly for the particular accessory in use.

UWG 1: Yet another variation on the fitting of the double-spindle 113o/113oA motor this time with a two-step pulley. The top-slide feed gearbox bolted to the lathe base plate was a wonderfully neat and compact, 3-speed oil-immersed unit that driven directly from a large gear on the end of the headstock spindle. The drive from the box, which was taken to the top slide by the same shafts used for screwcutting, could be instantly engaged, disengaged or reversed by a lever on the front face of the box - whilst the output speeds (of approximately 0.0034", 0.004" mm and 0.006" per revolution of the spindle) were selected by a 3-position push-pull knob which emerged from the left-hand end face of the box.

UWG 1: Screwcutting was by a train of changewheels, mounted on a slotted bracket bolted to the left-hand end of the bed, which drove a telescopic shaft with universal joints connected to the top slide. If the slide had to be positioned towards the tailstock end of the bed, two extension drive shafts were supplied to make up the connection. To get the best out of the machine when generating threads the optional very-slow-speed drive assembly would have been a desirable accessory - the standard bottom speed of 75 rpm (at least as specified for the UK market) being a little too high for safety when threading to a fixed length, up to a shoulder or into a blind hole. For the generation of coarse threads, a handle and crank arm were supplied to attach to the face of the large gear on the headstock so the assembly could be turned by hand at slow speed. The vertical bar with the black knob on top was used to engage and disengage the feed.