Patent GB-190117456-A (GB)
Title: Improvements in Machines for Making Fire Lighters
Inventor: POLLARD EDWIN
Filed: 1901-08-31
Granted: 1902-08-28
Abstract: 17,456. Pollard, E., [Thomas, J., partly]. Aug. 31. Sawing.-Machinery for sawing or making wood firelighters in lengths with intersecting longitudinal and transverse or diagonal grooves on opposite sides, as shown in Fig. 11, is shown in plan in Fig. 1, and side elevation in Fig. 2. The work is placed on a table 2, and fed through adjustable rolls 5, 6, 7, 8. The longitudinal grooving-device 9 consists preferably of grooving-saws 31 spaced on a shaft 32 journalled on a saddle 35, which has end-posts 36 sliding in bearings on the framing, and resting in stirrups 38 provided with adjusting- screws connected by a hand shaft 40. A hood above the saws 31 is connected to a blowpipe for removing sawdust. Holding-down rolls 51, 52, 53 are disposed over the saws 31. The transverse grooving-devices 10, 11 are mounted on a carriage 72, and are preferably duplicates. The saws 76, Figs. 1, 2, and 13, are mounted on a shaft 77 journalled on a lever 79 pivoted on a rod 80 mounted in a bracket 81. An extension 84 of the lever 79 is connected to an adjustable link 85 carrying a roll 88 engaging a cam-groove 190 in a plate 191. The saws 76 can thus be raised out of the way of the work. The extension 84 may have an adjusting hand-wheel mounted in trunnions and threaded on a screw having an eye taking on a bolt in lugs of the carriage. Lugs 92, Fig. 2, of the carriage 72 receive the pin of a connecting-rod 94, and a shaft 97, Figs. 1 and 2, carries a crank including a web with an adjustable slide and wrist for regulating the stroke of the connecting-rod. The feedrolls 5, 6, 7, 8 and carriage 72 are driven from a countershaft 111 through a pulley 114 and a wormshaft 116 provided with fast and loose pulleys and a belt shifter 118. The shaft 116 is geared to a longitudinal shaft in turn geared to a shaft 126 carrying mutilated gear, which drives the feedgearing. The longitudinal shaft is also geared to an upright shaft 148 gearing with the shaft 97. The movements are arranged so that the work is at rest when the saws 76 come into operation. Plungers 156, Fig. 13, at each end of the carriage take into dash-pots 157 on adjustable plates. A plate 151 on the carriage is retained against the work by springs 152 provided with adjusting-bolts 154. The work is also held by rolls 166 mounted in levers 167 provided with springs 170 and adjusting-bolts 171, or weighted. The cutting-off device 12 preferably consists of a saw 200 provided with a hood 275 and mounted on a mandrel 201 splined on a sleeve journalled on a reciprocating frame 204 hung on a bar. A weighted bar 209 or other counterbalance is secured to the frame 204. The saw is driven from the countershaft 111 by a belt which is directed over pulleys 212, 213 mounted in adjustable yokes 214. An adjustable connecting- rod is secured to the frame 204 and to a crank on a shaft driven by change gears from a shaft 129 of the feed-gearing. It is desirable to give the saw mandrel and table 4 longitudinal movements, and for this purpose a rock-shaft 245 is connected by an arm 257 and link 258 to the saw mandrel, and provided with a bell crank connected to the table 4 and frame 204. The work may be held to its table by springs 263 with pressure blocks 265. A side pressure plate 267 is provided on the table 4, a pressure arm 180 on the table 2, and other pressure devices 186, 187, 188 near the grooving-devices. Adjustable side gauges 175, 176, 177 are also provided on the tables.