Patent GB-191030383-A (GB)
Title: Improvements in or relating to Apparatus for Moulding Briquets or the like.
Inventor: BOULT ALFRED JULIUS
IPC: B30B11/12
Filed: 1910-12-31
Granted: 1911-05-25
Abstract: 30,383. Boult, A. J., [White, M. C., and Duryea, O. C.]. Dec. 31. Cylinder machines; pressure-producing mechanism.-In briquette presses, the compression of the material is effected by the force of an explosion in an internal - combustion device. Moulds 89, Fig. 3, having a flared opening 88 and arranged in the form of a drum, are fitted with pistons 93 connected to cross-heads 90, which are. provided with bowls running in cam races 97, 98. Arranged by the side of the drum is a cylinder 33, Fig. 1, to which an explosive mixture is supplied, under pressure, through a pipe 52. The cylinder is fitted with inlet and exhaust valves 53, 58, and a starting- device 64 of the make-and-break type, all actuated from a shaft 73. The piston-rod 36 is connected to a cross-head 38 in which slides a block carrying pivoted links 114, 128. The links 114 are connected to a cross-head 115, which is coupled by links 118 to a cross-head 119, Fig. 3, carrying a pivoted spring-retained member 120 adapted to act upon the inner ends of the cross-heads 90. The links 128 are connected to stub shafts 127 carried by rocking members 124, and to these shafts are pivoted members 129 carrying an abutment 130 provided with a portion 131 adapted to be pressed against the surface of the drum. Rocking members 132, each fitted with a spring and dash-pot device, support the members 129. The lower end of the cross-head 38 carries a rod 41 fitted with a piston working in a dash-pot 43. A shaft 46, fitted with a pulley 47 driven from a suitable source, drives the mould drum directly and the cam shaft 73 through shafts 82, 80. A hopper mounted above the mould drum is forced down into contact therewith bv springs 151, and is retained by a rod 152. The hopper is furnished with feeding - arms 154 carried by shafts 153 driven by the drum. In operation, as the drum rotates, the pistons 93 are withdrawn as the moulds approach the hoppers, and the moulds are filled with material by the action of the arms 154. When the filled moulds reach the abutment 131, the inlet valve 53 is opened and the compressed explosive mixture entering the cylinder 33 causes the cross-head 119 to advance and impart a preliminary pressure to the material through the medium of the member 120, which engages with the cross-heads 90; at the same time, the abutment 131 is drawn tightly against the drum by the members 129. Just before the moulds reach the horizontal position, the inlet is closed and the mixture is exploded to impart the final pressure to the material, after which the exhaust valve 58 is opened and the piston is raised by compressed air supplied through a pipe 161. The movement of the piston withdraws the cross-head 119 and frees the abutment 130 from the drum, the latter being returned to its normal position by the members 132. Further rotation of the drum brings the cross-heads 90 into engagement with the cams 98, by which they are pressed forward to eject the finished briquettes. Specification 21,369/08 is referred to.