Patent GB-191019680-A (GB)
Title: Improvements in and relating to Metal Cutting Off Machines and the like.
Inventor: GORTON GEORGE
IPC: B23D23/00
Filed: 1910-08-23
Granted: 1910-11-17
Abstract: 19,680. Gorton, G. Aug. 28, 1909, [Convention date]. Circular-saw machines; machine saws.-Relates to a high-speed machine for cutting steel and like bars into lengths. A cutter disk 30 fitted with removable cutting- teeth 33 secured in a central opening is fixed in a rotating drum 37 mounted in journal boxes 43 in an horizontally reciprocating carriage, the end portions 8, 9, Fig. 3, of which slide in guides in the upper surface of a hollow casting 1 forming the base of the machine. The end portion 9 is formed with a depending bearing 10 for a rotating feedscrew 12, by means of which the carriage is reciprocated. The reciprocating carriage is hung from the axles 17 of rollers or truckwheels, which run on metal caps 6 bolted to the casting 1, and are hidden from view in Fig. 1 by cast - metal shields or housings 19. The drum 37 forms the hub of a gear-wheel 42, Fig. 3, which is rotated by a pinion 54 mounted in the gear casing 44 and driven through a clutch, shown in Figs. 5 and 8, from a pulley 59 rotated thro ugh belt gearing by a motor a, Fig. 1, fixed to a base 80 on the top of the gear casing 44. The upper half of the casing 44 is formed with oilchambers 45, Fig. 4, from which the oil passes through filters 47 and ducts 46 to the bearing-surfaces of the journal boxes 43. The exterior surface of the drum is formed near the edges with grooves 48, and the outer ends of the boxes 43 with grooves 49 through which the escaping oil passes into a receptacle at the base of the gear casing 44, from which it is elevated by the rotation of the gear-wheel 42 and caught by deflectors 51 and returned through side openings to the oilchambers 45. The clutch shown in Figs. 5 and 8 consists of a clutch flange 60 on the pulley 59 and a split clutch ring or shoe 61, which is carried by a disk 62 keyed to the shaft 55 of the pinion 54, and is expanded so as to engage frictionally with the flange 60 by the partial rotation of the bevelled-head 65 of a rock-shaft 64 carrying a depending arm 66. This arm is fitted with a roller yieldingly engaging a cone 67 on a pull-rod 69 sliding in the pinion shaft 54 and carrying an operating - handle 70. The clutch disk 62 is formed with an oil-drum 72 for lubricating the working clutch parts, and an annular flange 73 guides the escaping oil into an outer ring 75, from which it passes to a receptacle 75<1> carried by a stud 76 on the reciprocating carriage. The reciprocating-mechanism of the sliding carriage may be driven from the main clutch by forming the outer surface 81 of the drum 72 as a belt pulley, and driving through belt gearing c, d a shaft 86, Fig. 3, and through belt gearing c, e a shaft 101, Fig. 1. The shafts 86, 101 rotate, through screw gearing, wheels 96, 98, loose on the shaft 88, Fig. 3, in opposite directions. A double cone 104 on the shaft 88 is moved by means of a lever 105 to connect one of the wheels 96, 98 to clutch portions 97, 99 fixed to the shaft 88 so as to drive through toothed gearing 90, 91 the feed-screw 12 in the required direction. The cutters and work may be flooded during the cutting operation with cooling-liquid drawn by a pump 143 from the tank formed by the hollow base casting through a suction pipe 144, and delivered through a discharge pipe 145. The cooling - liquid and falling chippings are caught by pans 146, Fig. 4, and the liquid passes through screens 147 into settling-chambers 148, from which it overflows into the base 1. The stock bar to be cut is clamped during the cutting operation in a V-shaped depression 110 in a saddle 109 by means of a clamping-jaw 113 sliding on bolts 111, and raised and lowered by a screw 114 passing through a fixed cross-head 112. The other end of the bar is carried in a trolly device 120, Fig. 1, sliding on parallel track rails 118 and provided with a clamping screw 125. The trolly is set in the correct position for cutting by means of a gauge 126 screwed to one of the track rails 118. An eccentrically-mounted idle roller 139 is arranged in front of the saddle 109 to support the work above the vice jaw when being moved forward. The portion of stock cut off is caught by a V- shaped trough 115.