Compound slide rest
If the screwcutting arrangements disappointed, the slide rest would surely have delighted. Quickly detachable, in the manner of a Rivett 608, the unit was self-contained, with good-sized balanced ball handles, and could be adjusted laterally on top of the vertical side. It was locked in place by a long T-bolt, with a wing nut placed conveniently at the bottom of a long tube. Although unprotected against swarf and dirt the cross-slide screw was fitted with (for the time) a remarkably large micrometer dial, graduated in 0.001" intervals and locked by an outboard knurled ring that pushed the dial inwards without disturbing the setting. Even the 360° swivel top slide was equipped with a feed-screw dial of decent size - when most contemporary machines were not - and also featured a particularly large and clear set of degree markings. Simple, but surprisingly effective and adaptable, the toolholder was just a triangular clamp with a levelling screw at the apex.
Made in one piece - it could not be set over on its base to turn slight tapers - the tailstock carried a spindle bored to take the same collet as the headstock, centres being the solid-collet type. Although the lack of a sole plate for set-over might not have mattered when the lathe was new - everything being scraped into perfect alignment - in the machine's twilight years, as the base wore, having somewhere to insert shims to restore centre height alignment would have been useful. Of a type used on other precision lathes, a slit in the casting closed down by a screw, the method of locking the spindle was crude and would have been a nuisance when the parts were old and poorly fitting.
The Pearce is very rare and, should you have one, the writer would be very interested to hear from you.
*Levin, Bottum, American Watch Tool Company, B.C.Ames, Bottum, Hjorth, Potter, Pratt & Whitney, Rivett, Wade, Waltham Machine Works, Wade, Pratt & Whitney, Rivett, Cataract, Hardinge, Elgin, Remington, Sloan & Chace, W.H.Nichols and (though now very rare) Ballou & Whitcombe, , Sawyer Watch Tool Co., Engineering Appliances, Fenn-Sadler, "Cosa Corporation of New York" and UND.