John Jacob Holtzapffel · digital reprint by www.CircuitousRoot.com · leaf 136
OVERHEAD MOTION 110 regulating screws which pass upwards through two hemi- spherical washers that move freely in corresponding recessed apertures in either end of a strong steel spring, which is clamped by one screw and fly-nut at its centre beneath the bow of a single standard. The latter is… … two lengths screwing together for convenient portability, of which the lower half, fig. 86, is carried and moves round rather stiffly, as regulated by a side screw by which also it may be clamped, in sockets attached to the left hand upright of the lathe frame. The regulating screws are used at…
Ornamental turning
Internet Archive · Dr. David M. MacMillan · Public Domain Mark 1.0. Free to use for anything.
