Patent GB-191322831-A (GB)
Title: Improved Construction of Apparatus for Carving and Ornamenting Wood Mouldings and the like.
Inventor: BRADSHAW FRANK RAY
IPC: B44B3/00
Filed: 1913-10-09
Granted: 1914-03-26
Abstract: 22,831. Bradshaw, F. R. Oct. 9. Carving.-Wood mouldings are carved or ornamented by cutting, chiselling, pressing, &c., by cutters arranged along a bed-plate 1 fixed to, or forming part of, an ordinary woodmoulding machine. The moulding on leaving the moulding-machine passes between screw-adjusted spring - pressed rollers 12 ... 16 and spiked or toothed rollers 7 ... 11 arranged on the bedplate 1, and contacts on one side with a fence strip or rollers 23. The shafts 2...6 of the rollers 7 ... 11 mav be connected by chain gearing and driven by power, or may be driven merely by the contact of the peripheries of the rollers with the moving moulding. In its travel along the bed-plate, the moulding may be operated upon by the following tools. (1) Relief-design cutting-tools consisting of one or more chisels or other cutters carrying disks 24, which are mounted in blocks 26 vertically adjustable on standards 27, and are rotated through toothed gearing 31, 32, 33 from the roller shafts 2, 3. (2) One or more cutter disks 34, Fig. 3, carried by shafts 35 of adjustable inclination, which are driven through bevelgearing 44, 38, 44<a> from the roller shafts 2, 3, and are supported at their upper ends by bearings 39 adjustably secured in slotted brackets on the bed-plate, and at their lower ends by bearing-blocks pivoted to shafts 36 at rightangles to the shafts 2, 3. (3) Chisels or cutters 56 carried by a block 55, which is reciprocated by a rod 61 on rods 54 connecting the ends of a bifurcated lever 51 adjustably pivoted to a slotted bridge 45. The cutter is moved forward at the same rate as the moulding by means of a rocking lever 62, operated by the engagement of a pivoted pawl 65 with bowls on a rotating disk 63 driven by the shaft 3, and the lever 51 is operated to move the cutter into contact with the work by a lever 50 carrying a wedge 53 engaging bowls on a rotating disk 58 driven by the shaft 4. The levers 50, 62 are returned by springs 60, 67. (4) A gouging - tool 92 mounted on an arm 88 angularly adjustable on a bracket 85 bolted to a carriage 84, which is reciprocated to or from the moulding by a connecting-rod and crank-disk 95 driven from the shaft 4, and is moved with the moulding while cutting by a rod 106 on a bar 104 reciprocated in guides 105 by a connecting-rod 101 and a crank-disk 100, also driven from the shaft 4. The gouging-tool is either oscillated by a starwheel 77 driven from the disk 95 and engaging a bowl 79, which slides in a guide-slot 74 in a. spring-controlled carriage 73 and is connected to the tool shaft through adjustable slotted levers 78, 93, or is rotated by a chain 1'14 passing over a chain pulley 113 on the shaft of the disk 95, adjustable guide-pulleys 108, 109 on a fixed standard 107, and a chain pulley 110 which is connected to the tool shaft by a slidable rotary connexion and is prevented from axial sliding by a forked piece 111 sliding in standard 107. (5) Grooving-tools carried by two spindles 149 vertically slidable in brackets 148, which are horizontally slidable in revoluble spring-controlled posts 126. The roller shaft 5 rotates through bevel-gearing 121, 122 a vertical shaft 120 carrying a star-wheel 123, a grooved disk 138, and a corrugated disk 139. The star-wheel 123 engages a roller 136 on a plate 135 carried by rods 134, which slide in the standards 115 and reciprocate the brackets 148 by means of connecting-rods 163. The grooved disk 138 engages a pin 140 on an upwardly-pressed spring plate 141, which reciprocates the spindles 149 by engagement with forked arms 154 pivoted to the posts 126. The corrugated disk 139 engages rollers 161 on arms 159 secured to the posts 126, thereby rocking the posts so to move the spindles 149 towards and away from one another. The spindles are rotated by a cord passing over pulleys 151, 165 and a spring- pressed tensioning-pulley 132 on a bridge-piece 129 on the standards 115. (6) A cutter secured to a plate 169 carried by a frame 168, which is reciprocated on vertical rods 167 on the bedplate by means of an oscillating arm 171 operated by a connecting-rod 175 and crank-disk 179 driven from the roller shaft 6. The plate 169 is simultaneously reciprocated horizontally on the frame 168 by a connecting-rod 183 and a crank-disk 186 driven from the roller shaft 6. The cutter disks 24 may be replaced by a crankdisk operating cutters carried by a carriage sliding horizontally on a frame, which slides vertically on a bracket adjustably mounted on the standard 27. The bracket may carry rollers pressing on the moulding.