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Kerry "A.G.", "A.C.", "G.C." and 1124, 1140,
1134 & 1140 Lathes
Also Labelled Qualters & Smith and "Q & S"
Later 11" and 13" Models 1124/1140 & 1324/1340   DB Series Lathes
Kerry Drills     
A Maker's Handbook, Parts List and Flat and Poly-V belts are available for these lathes
Photographs of a dismantled cross slide screw and nut assembly are sought. If you can help, please email tony@lathes.co.uk


Originally based in Warton Road, Stratford, London, England Kerry also had factories in Halifax, Nottingham and Barnsley in the south of Yorkshire. Amongst the companies in the Kerry Group were Henry Broadbent Ltd. of Sowerby Bridge and Oldfield and Schofield Ltd of Boothtown, Halifax - both makers of massive lathes - and Qualters and Smith (Q & S) of Barnsley, well known for their hacksaws and drills. It was in the latter town that the original Kerry lathe was built; machines from the early 1950s were listed as having a 5-inch centre height while those from around 1956 were marked at 5.5-inches - but with some using the more impressive-sounding American system and described as "11-inch swing". Because the lathe was manufactured within a machine-tool group not all lathes left the factory with Kerry badges: some, in a move later to cause confusion in the second-hand trade, were dispatched  labelled "Q & S" for Qualters & Smith (a Barnsley firm more usually associated with drills and mechanical saws) and, at one point, when under the control of the large "600 Group", the Kerry badge was used on some Harrison L5 lathes. However, these were nothing to do with the Kerry company and the use of their name was an example of badge-marketing. Only three genuine Kerry designs have been identified: the A.G, and AC Series models; the lather 1124 and 1140 types and the very rare belt-drive DB
In all its forms, both early and late, the Kerry was an especially well-constructed machine; it had solid proportions, considerable strength, a proper all-geared headstock and a screwcutting gearbox fitted as standard. The 1" bore nickel-chromium-molybdenum steel headstock spindle was ground on all its diameters and available with either a threaded nose - in which case it ran in two opposed preloaded Timken taper roller bearings at the front and a long sintered-bronze bearing at the rear - and later with the option of an American LOO long-nose taper in which case it was supported in one taper roller bearing at the front and another at the rear. The spindle nose of all years was bored to take an adaptor able to accept draw-in collets. The standard spindle taper was either a 4 or 4.5 Morse (with a sleeve down to a 3 Morse provided) though some lathes, probably those for export, carried what is reported as being a  No. 12 Jarno in the headstock; whether the tailstock taper was also a Jarno on these lathes has not been determined.
Although the most common motor found fitted to the A.G Series lathes is either a 1420 r.p.m.,  0.75 h.p. three phase (or 1 h.p. single phase) this was a specification intended for training school and lighter-duty use. For industrial purposes more powerful unit were often fitted, the writer having seen original-fitment 2 h.p. 3-phase motors on more than one example. The motor was mounted at the back of the headstock on a simple, hinged plate that could be pivoted to adjust the tension of the drive belt. Early lathes with both flat and V-belt (2 and 3-step) drives to the headstock have been seen - and it is entirely possible that the original customer was given a choice in the matter. The input shaft into the geared headstock carried a combined cone clutch and brake unit (mounted inside the headstock pulley) with the hardened male cone bearing against a replaceable Tufnel insert. Eight spindle speeds were available of: 39, 58, 91, 210, 314, 490, 644 and then, with rather a jump, 1500 rpm. Another version of the lathe, the G.C. was also manufactured. This lathe was advertised as being  for toolroom or "
high-speed precision turning" and had a slightly more powerful 1 h.p. motor. Apart from the fitting of a proper heavy-duty, dry multi-plate clutch by Matrix they seem to have been identical to the ordinary A.G. series - although it is more than likely that they were just selected as the most accurate from each production batch.
Continued below:

Continued:
Kerry Mk. 1 A.G. lathe with a single rotary control on the apron to both select and then engage the power sliding and surfacing feeds. The leadscrew clasp nut lever was on the front face of the apron. Note the small headstock spindle speed control dials

Continued:
For a 5.5" lathe the bed (for which, at first ,there was no option of a gap) was of massive proportions, heavily ribbed between the walls and carrying a Vee and flat for the saddle and another Vee and flat for the No. 3 Morse taper tailstock - of which some, produced during the late 1950s and 1960s, were fitted with a rack-driven spindle operated through an angled drive with bevel gears.
A full screwcutting gearbox, which generated 62 English pitches, was supplied as standard, its changewheel drive from the headstock incorporating a tumble-reverse mechanism. On early lathes the changewheels have been measured as 16DP with a 14.5-degree pressure angle but later examples (reflecting general changes in industry standards) have been found with 18DP gears and a 20-degree pressure angle. Metric threading was also possible, the full range of  60 pitches being obtained by the substitution of three changewheels in the drive train.
Used only for screwcutting the leadscrew could be disengaged when not in use. A separate power shaft took a drive from the gearbox to the apron where the power sliding and surfacing feeds were (on all but early machines) selected and engaged by just a single lever flicked easily and conveniently though a vertical "gate"; interestingly, this design was copied and used by Taiwanese manufacturers on certain of their 6" centre-height lathes as well as a development of it by Emco on their well-known V10 and V10P machines.  Sliding power feeds ranged, in geometrical progression, from a low of 0.000375" to high of 0.24" of carriage travel per single revolution of the spindle. The compound slide rest was especially well built and the wide cross slide equipped with useful T slots. Of course, at first, the micrometer dials were far too small but once the Mk. 2 was in production the size of the cross-feed dial was substantially increased.
The Kerry lathe was built in three distinct forms: the early, very rare and quite different belt-drive Model D.B, the popular Model A.G. (in what, for convenience if unofficial reference, we shall call the Mk. 1, Mk. 2 and Mk. 3 forms) and what might be described as the Mk. 4 , the widely-exported Models 1124 and 1140. While all versions of the AG were similar and based directly on the Mk. 1 (but with modified aprons and tailstocks), the 1100/1200-series was extensively redesigned, looked very much more modern and was available in both 11" and 13" versions.
Although they shared many parts the main difference between the three AG lathes was the apron - this item obviously being a point of some difficulty for the Kerry design department who seemed determined that both selection and engagement of the power sliding and surfacing feeds would required only one easy-to-move control instead of the usual two. Their first effort, on the Mk. 1, saw a rotary dial positioned in the front left-hand corner of the apron with the leadscrew clasp nuts operated by a lever in the bottom right-hand corner and the carriage handwheel placed high up and to the right. On the Mk. 2 (a lathe that has sometimes, along with the Mk. 3 been found badged as either the "G.C." or "A.C.") the dial was replaced by a lever moving vertically in a slot cut into the centre face of the apron, with the clasp nuts operated by a lever fixed to the apron's right-hand face. It is not known what problems the first two designs encountered (though the power-feed lever had a horrible feel) but to what must have been the department's great relief the final Mk. 3 apron proved entirely successful. This version, which used a lever moving vertically, then sideways through a dog-leg gate, allowed either sliding or surfacing feeds to be instantly selected and then positively engaged.
A weak point on early Kerry lathes was the operating mechanism of the cone-clutch (the clutch itself was fine) with its effectiveness deteriorating over time. Although the clutch mechanism might have changed or been modified on later models, on many examples the fault can be corrected by modifying the arrangement to limit end float in the assembly. At the front the shaft ran in a ball bearing retained by what amounted to a motor-car cylinder block core plug; after time, the plug tended to loosen, allowing the bearing, complete with shaft and clutch, to float from side. Although the float was limited internally by other constraints, the 1/8" play generated was sufficient to cause problems. The cure is to replace the core plug with a top-hat section, bolt-on cap, arranged so that when it fits into the bore it holds the bearing tight against the rear flange. A cap made from aluminium, and held by 3 1/4" bolts is sufficient. However, as a temporary repair, the clutch can be locked up by the twist of an Allen key, so the fault  did not need to spoil what was otherwise an excellent lathe.
If the markings are missing from the headstock speed-selector dials - take care, it is possible to rotate them into positions where they can interlock. To check this remove the headstock cover, turn the spindle by hand and watch what happens when you rotate the dials; it should be immediately obvious how their positions relate to the spindle speeds - and a dab of paint can be used to mark their positions.
Although available for bench mounting, the Kerry is more often found fitted to the maker's heavy sheet-metal stand with a central drawer that could be locked, a storage locker on the left and, unaccountably - and dangerously out of reach - the  electrical switchgear on the right-hand cabinet face. If you find a Kerry like this, before using it move the switchgear to a position where it can be more easily operated.  Some lathes are found fitted to a very heavy cast-iron stand and, while this was only ever shown in the adverting literature as being for the rare GC "toolroom" models, several examples of the ordinary lathe been discovered fitted to them as well.
The basic lathe for bench mounting weighed 574 lbs (260 kg). or 802 lbs (364 kg) complete on the sheet-metal cabinet stand.
Supplied with the lathe when new were: an American pattern toolpost, 10" faceplate, chuck backplate, fixed and travelling steadies, three changewheels for metric threading, two  Morse taper centres and the necessary spanners and an operation manual..

Kerry AG Mk. 2 - a lathe sometimes, along with the Mk. 3, found badged as the "G.C." or "A.C.". The power sliding and surfacing feed-selection dial was replaced by a lever moving vertically in a slot cut into the centre face of the apron. Note, on this machine, the much larger black-plastic spindle-speed selection dials.

Kerry Model A.G. Mk. 3 on the maker's sheet-steel cabinet stand. On some versions the gearbox plate will carry the designation "Model C"

To the designer' s relief the apron of the A.G. Mk. 3 proved entirely successful and its power-feeds selector allowed either sliding or surfacing to be instantly selected and then engaged through the operation of just one lever moving vertically through a dog-leg gate. This lathe is fitted with the later and larger-diameter cross-feed micrometer dial.

1950 Kerry 11" with twin V-belt drive from motor to headstock

Kerry changewheels. As shown, the final drive gear from the tumble reverse mechanism is not fitted

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


Kerry "A.G.", "G.C." and 1124, 1140,
1134 & 1140 Lathes
Also Labelled Qualters & Smith and "Q & S"
Later 11" and 13" Models 1124/1140 & 1324/1340   DB Series Lathes     
A Maker's Handbook, Parts List and Flat and Poly-V belts are available for these lathes
Photographs of a dismantled cross slide screw and nut assembly are sought. If you can help, please email tony@lathes.co.uk