Details
An engineer-made ornamental slide-rest and accessories,
with free-curve attachment with one template, cross-slide with automatic feed from overhead via tangent screw, of iron, bronze and steel construction -- 16½ in. (42 cm.) wide, in wood box, with accessories, all with 11/16th inch square shafts: an epicyclic cutting frame for driving from a spiral apparatus; an eccentric cutting frame with miniature drill-spindle; a horizontal cutting frame; and a drill spindle
(5)
with free-curve attachment with one template, cross-slide with automatic feed from overhead via tangent screw, of iron, bronze and steel construction -- 16½ in. (42 cm.) wide, in wood box, with accessories, all with 11/16th inch square shafts: an epicyclic cutting frame for driving from a spiral apparatus; an eccentric cutting frame with miniature drill-spindle; a horizontal cutting frame; and a drill spindle
(5)
Further details
The slide-rest embodies a simplified form of Linsay-Forster's 1928 Patent of the free-curve slide-rest. This would be driven in gear with the mandrel via the spiral gear and cause the the curvilinear bar to move in and out under control of the eccentric cams on each end of the top shaft.