Patent GB-190428612-A (GB)
Title: Improvements in Wood Carving Machines.
Inventor: RICHARDS FRANCIS HENRY
Filed: 1904-12-28
Granted: 1905-04-13
Abstract: 28,612. Richards, F. H. Dec. 28. Carving and shaping by cutting; tools and toolholders.-In a machine for carving wood, the tool carriage is longitudinally, traversed simultaneously with the stock, each having varying velocities to provide for a relatively long period of minimum relative feed for cutting purposes. The pulley driving the shaft 33 is provided with webs, one of which holds, and the other, extending from the rim, confines the oil dropping either through the shaft bearings 24, 29, Fig. 2, or through a drain from the casting 16. From the pulley, the oil may be forced through a scoop and system of tubes for lubricating purposes. The upper end of the support 18 has a circular flange eccentric to the bore containing the driving-shaft 33, and to it is bolted the flange 26 of the bearing 24. The shaft 33 has a two-arm crank 38, Fig. 10, the short arm 39 of which has a wrist-pin 40 and the other arm 41 wrist-pins 42, 44, secured by keys, all of which are on the same diameter. The pin 44 is journalled in a block 97 which moves in guides in a crank 94, pinned to a hollow shaft 78 which is mounted eccentrically to the driving-shaft in bearings 72, and to the concentrically - flanged upper end of which is attached a variablethrow eccentric, Fig. 14, for traversing the tool carriage 185, Fig. 2, in guide-ways 206, in a direction parallel to the feed. This eccentric consists of a piece 84 surrounded by a collar 92 and containing au elongated slot 89 for the reception of the shaft 78. It is provided with a rectangular base-piece adjustable in guides 82, 86 by two bolts 90, 91, the former, which is of the size required for a given eccentricity, and is used to set the throw, being screwed through the projection 88 from the slide 84, and the latter, which is used for moving the slide up to the other bolt, being screwed into the flange 79 of the shaft 78. A shaft 109 for reciprocating the cross-slide 183 is mounted in the hollow shaft 78, and is driven by the engagement of the wrist-pin 40 with a guideway in the crank 114. It is provided with an eccentric 110, a pin on which is journalled in bearings 195 carried by a member 197 which moves the cross-slide, the stroke being regulated by a screw 198. This slide carries tools 170 for acting horizentally on the stock A, the tools being fixed in the holder by a cap and nut 166 and by the engagement in notches of a screw 172. The slide, by means of a link 188, reciprocates vertically in guides bolted to the slide 185, a second slide 182 carrying tools 174, 175. The feed-rolls 165 are also rotated at variable velocities by means of gearing from the shaft 33. The pin 42 in the crank 38 has a block 104 which drives the gearwheel 98, set eccentrically to the shaft 33, through a radial guide 100 fixed to it in a slot 99. This wheel gears with a wheel on the shaft on which a wrench 210 may be placed, a second removable wheel on which is used to drive another removable gear-wheel on a shaft, supported by a hollow stud fixed to the table 11, which is provided with a spiral gearing with a spiral wheel on the shaft 146. Worms 151 on this shaft gear with wheels 156 and drive the feed-rolls 165. Two casings, provided with doors, extend from the back of the casing 2 and contain the removable gear-wheels, between which is a column casing with an angular lip for catching oil, and the front of the casing is provided with a door 218.