|
As a maker of equipment dedicated to the production and repair of clocks, watches and mechanical instruments, Lorch concentrated mainly on lathes and their accessories together with a range of specialist tooling. However, needing to offer a small milling machine, they followed the established lead of some American makers of precision bench lathes - notably Ames, Cataract, Pratt & Whitney, Stark and Waltham - in offering a small range based on a modified lathe bed and headstock. Oddly, most of these makers, including the Lorch, sold only a simple horizontal type and not the far more versatile and useful vertical (that would surely have been a much better seller) as made by, for example, Aciera. Unfortunately, little survives in the way of advertising material for Lorch millers but two examples have come to light. The first, in stark comparison to the American machines, was a much heavier, more ambitious undertaking with a proper backgeared headstock with the machine carried on a cast-iron stand with a built-in drive system (the latter neatly modified by the present owner). In addition, the table had power feed through a telescopic shaft and universal joints, the method of engagement being the usual one for this type with a gear fastened to the table feed-screw and driven by a worm carried on an arm that could be moved into and out of engagement. Fitted with zeroing micrometer dials from one of the larger Lorch lathes, the table and its range of feeds would have been entirely adequate to carry the sort of job typically encountered in a workshop dealing with small precision parts. In order to improve its appeal to owners of Lorch lathes, the miller would have been offered with a replica of a lathe bed to fasten to the T-slotted table, so allowing the mounting of expensive accessories already in stock such as dividing heads and rotary tables. Quite different to the first machine, the second Lorch (though its origins have yet to be confirmed) is more akin to the American type being of a much lighter build and constructed as a miniature version of a traditional "knee-type" horizontal. Drive came from a watch-lathe-like "overhead", using used round belts of small diameter driven from a motor bolted to the bench. With some suitable juxtaposition of components it would thus have been possible to have a single motor arranged to drive both a lathe and the milling machine. The machines shown below are seldom found and, should you have a similar example, the writer would be very interested to hear from you.
|
|