Patent GB-749892-A (GB)
Title: Improvements in or relating to apparatus for handling cement
IPC: B05C9/14
Filed: 1953-12-17
Abstract: Apparatus for handling cement comprises a chamber housing a rotatable disc in close relation to the walls of the chamber and providing a passage for the cement connecting inlet and outlet openings, means for heating and for rotating the disc whereby heat is transferred through the walls of the chamber to the disc and the disc imparts heat to cement in the passage while tending to move the cement in a direction from the inlet opening to the outlet opening.  The apparatus described is substantially the same as that described in Specification 544,010 [Group VIII], but the feed of cement is different and an application of the feed to a book tipping machine is described.  The cement receptacle 312 has thermostatically controlled heating units 320 and a rotatable disc 342 mounted in the casing of the receptacle.  The rod of cement is fed by rotating rolls 555, 570 through guides 347, 582 to a receptacle inlet 316 and to an aperture between the disc and casing to an outlet 313 having a gear pump 324 feeding the cement to a tube 330 leading to a passage 241.  The disc is mounted on a shaft which has a gear 351 meshing with a pinion 3261 on the gear pump shaft 325.  The pinion 3261 <PICT:0749892/III/1> <PICT:0749892/III/2> <PICT:0749892/III/3> <PICT:0749892/III/4> meshes with pinion 326 on the shaft of driven gear 324.  A bracket 580 connected to a plate 318 carries a sleeve 554 and a sprocket 560 connected by a chain to a sprocket 564 on the gear pump shaft. The bracket carries a bell crank lever 568 which supports a feed roll 570 which is adjustably positioned against spring pressure by a handle 572.  The sleeve 554 supporting the upper feed roll 555 has a gear 586 meshing with gear 588 on the shaft carrying the lower feed roll 570.  A slip drive is provided comprising a pair of prongs 590 upon the hub of sprocket 560 engaged in a ring 592 resting against a gear 586 held by a head portion 594 which extends through sleeve 554 drawn inwardly by a spring 598 bearing against a collar 600 which rests against the hub of the feed roll, the other end of the spring rests against a nut 602 threaded on a rod 596 and adjustably held by a locknut 604.  A book tipping machine comprises a stringer 1014 on a base 1010 and an endless chain 1025 with pawls 1022 for pushing signatures along rotates between spaced tables 1016 1018.  The cement is applied by a disc 1034 below which are two grooved rollers 1042 and a spring finger 1048 in work engaging position.  The disc 1034 is mounted in a casing 1052 and has cartridge heating units thermostatically controlled.  The casing has a tangential passage 1074 connected with a tube 1076 through which a rod 1080 of cement is fed.  A doctor 1090 is adjustably positioned close to the disc. A cement string severing finger 1116 is mounted adjacent the disc and is heated.  The cement is delivered by feed rolls 1132, 1134 mounted in a bracket.  The roller 1134 being adjustably mounted on a bell crank lever provided with a handle 1148.  The bracket supports and pivot 1160 for hub 1162 of gear 1163 which meshes with a gear driven by sprocket 1167.  A slip drive is provided between the hub 1162 and feed roll 1132.  Power is supplied from a motor through a belt 1200 to a pulley 1202 on the disc shaft 1058 and connected by a belt 1204 to the book feeding chain.  A chain 1212 drives the sprocket 1167 for the feed rollers from a sprocket on the disc shaft.