Timbrell & Wright Capstan Lathe
Manufactured in Birmingham by a now forgotten maker, Timbrell & Wright Machine Tool & Engineering of Slaney Street, Birmingham, this little capstan lathe looks to have been made either during the late 1930s or, more probably, during WW2 when small lathes of this type would have been in short supply. Of absolutely straightforward construction, the lathe had its headstock and bed cast "as-one" (adding to rigidity) and with the latter arranged, like the Myford Series 7 lathes, with a flat top (43/8" wide") and narrow 90° ways to guide the cut-off slide and 6-station turret head with its 5/8" bore tooling holes.
Bored through 3/4" parallel (though on the example inspected original Morse taper may have been machined out to increase its capacity) the spindle had a nose threaded 1.25" x 14 t.p.i. and ran in plain bronze bearings secured by simple two-bolt caps. Early models carried a 3-step flat-belt pulley (with diameters of 4.75", 3.75" and 2.71") and (with no evidence that the stand every mounted a countershaft unit) obviously intended for connection to a factory's overhead line-shafting. Developed versions had V-belt drive, and the likelihood that some sort of built-on countershaft was fitted - certainly the company's later machines were advertised as All-Electric indicating (as shown in the advertisement below) that a proper self-contained countershaft system was fitted.
On the flat-belt drive model the lower half of the bearings each bore against a steel backing plate, but the upper halves located directly against the caps - though with evidence that there may have been a slip of paper or a special thin gasket material used to cushion the fit.
Although now snapped off, on the left-hand face of the headstock was a cast bracket that would have provided a mounting point for a lever-action collet closer. Some examples of the lathe must also have been fitted with either a hand or powered longitudinal feed to the cut-off/forming slide, a number of holes and machined surfaces in the front of the bed and on the apron of one bearing witness to the mounting of a suitable leadscrew or power-shaft and the necessary control levers.
Although the screw-feed cut-off slide would have been adequate for small-batch jobs, for serious production work one operated by lever would have been preferable, though no doubt such an item would have been on the options' list.
By 1946 the Company were offering a complete range of sizes (the largest able to load a 2" bar) starting at the No. 0 through to a No. 3. If you have a machine tool by Timbrell & Wright, or any information about the Company's products, the writer would be interested to hear from you..