Patent GB-190710935-A (GB)
Title: An Improved Press for the Manufacture of Articles from Granular or Fibrous Material.
Inventor: WUERL EDUARD
Filed: 1907-05-10
Granted: 1907-10-10
Abstract: 10,935. W³rl, E., and Mattencloit, Richard, Freiherr von. May 10. Moulding food for animals, peat, &c.-A machine for forming cakes, briquettes. &c. from plants, grain, vegetables, peat, &c comprises a hopper with movable side walls, into which the material is fed and from which it is forced into a mould box placed beneath the hopper by means of a cover-plate which is forced down through the hopper, the mould box and cover being then conveyed to a press consisting of a wheel provided with a series of radial tapering compartments adapted to receive the moulds. The mould boxes and covers are provided with inclined ribs corresponding to the tapered sides of the compartments in the wheel, so that, on the moulds being forced into these compartments, the material is further compressed. The wheel is intermittently rotated, and after each mould has been carried round nearly through a complete revolution of the wheel it is ejected from the compartment, and opened for the discharge of the moulded briquette, and the mould box and cover are then conveyed to the bottom and top of the hopper respectively. Each mould is open-sided and is provided with a rigid bottom and front walls 26, 27, Fig. 6, and a hinged rear wall 28 carrying an extension 29, which fits into the base 26 and serves to detach the briquette from the mould when the wall 28 is opened about its hinge. The hopper has fixed sides 1, Fig. 1, and movable sides 2 hinged to the fixed sides at 3, 3. Levers 20 pivoted to the fixed wall 1 are connected by means of links 19 to arms 15 of bell-crank levers 15, 14, fixed to a shaft 13 carrying levers 9, which carry rollers 10 engaging with slots 11 in one of the hinged sides 2, so that, on the levers 20 being turned upwards by means of projections 25, Fig. 2, carried by crossheads 8 engaging with pins 24 on the levers, the wall 2 is turned inwards. The other side wall 2 also carries levers 9 which are connected to the other arms 14 of the bell-crank levers 15, 14 by means of links 18, so that both sides 2 are turned inwards simultaneously. The walls are turned outwards on the descent of the cross-heads 8 by the projections 25, Fig. 2, engaging with pins 23 carried by bell-crank levers 22, 21 connected to the arms 14. During the ascent of the cross-heads 8, which are operated by links 118 attached to pins 117 on fly-wheels 116 fixed to the main shaft 110, material is fed into the hopper and a mould is run into a chamber 4 beneath the hopper. In their highest position, the cross-heads 8 engage with a cover-plate and also turn the hopper sides 2 inwards, forming a prismatic shoot into which the cover fits, and during the descent of the cross-heads 8 the cover forces the material into the mould placed beneath the hopper. The filled mould is then pushed forward by links 111, connected to levers 66 operated from the driving-shaft, into a compartment 87 in a rotary press or wheel 80, the mould and cover being guided by means of pins 32, 33, Figs. 6 and 7, engaging with slots 42, 43, Fig. 1, in the walls 1 and slots 85, 86 in the compartment 87. The wheel 80 is divided by radial partitions 81, and is rotatably supported by rings 82 and guide-rollers 83 and also laterally by guiderollers 84. The wheel is intermittently rotated by means of pawls and links connected to the levers 66. During the rotation of the wheel, pressure rollers 88 act on curved projections 30<1> on the back of the moulds, forcing the moulds further into the compartments 87 and further compressing the material. A filled mould is forced into a compartment of the wheel at each step, and the filled moulds are carried round until they come opposite to an ejecting-device 96 comprising two rods 96, Fig. 2, which are moved forward to eject the moulds by means of rollers 97, to which are attached chains 79 passing around rollers 78. The rollers 78 are rotated by the forward motion of cross-heads 64 carrying rollers 73 acting upon chains, which are fastened to the frame at 75 and pass around pulleys 76 rigidly connected to the rollers 78. The cross-heads 64 are operated by the levers 66 acting through links 65. The ejected mould passes on to a plate 36, Fig. 3, the pins 32, 33 being guided in slots 44, 45, which diverge as shown, causing the cover to be lifted from the mould. Hooks 50, Figs. 1 and 3, attached to a cross-bar 101 engage with the pins 33 of the cover, and the bar 101 is moved upwards by means of pivoted links 106 which are rocked upwards by the cross-heads 8, the ends of the bar being guided in slots 103. Stops 104 engage with extensions 102 carried by the hooks, rocking the hooks about the bar 101 and freeing the cover, which drops on to horizontal ledges 108, the guide-pins passing into grooves 107. During the inward movement of the hopper sides 2, the cover 30 is pushed inwards, and the guide-pins pass along the slots 107 until they are received by the cross-heads 8 by means of which the cover is brought down to force the material into the mould. While the cover is being conveyed to the top of the hopper, the mould passes along until one set of pins 32 reaches the end of the slot 44. In the rearward movement of the cross-heads 64, Fig. 2, projections 53 engage with pins 52 carried by slides 51, Fig. 3, withdrawing the slides from curved slots 46 down which the guide-pins 32 fall, tilting the mould as shown. The other set of pins then enter grooves 47, and the mould slides bodily downwards until it strikes against stops 59, causing the mould to open and discharge the moulded briquette, as shown. The stops 59 also rotate and deflect the guide-pins 32 into the guides 42, where they are engaged by projections or cams 49, which force the mould into the chamber 4 beneath the hopper. The projections 49 are carried by the cross-heads 64 and are forced by springs into slots 48 in the guides 42. The back wall of the mould is folded up by the curved plate 34. To prevent the grooves 46, 47 from being clogged with material during the passage of the moulds from the hopper to the wheel, the open sides of the moulds are closed by thin metal plates 54 which move along with the moulds until they abut against the compartment of the wheel, where they are held stationary while the mould is pushed into the wheel compartment. The plates 54 are guided by means of slide blocks 55 moving in guides 56, and are held in the guides by means of plates 58, Fig. 2, provided with stops 57 which engage with two-armed cams 67 on the cross-heads 64. The plates 58 also carry hooks 60 by means of which the stops 59 are rocked into position to engage with the mould, as shown in Fig. 3. As the mould is pushed forward into a compartment in the wheel 80, Fig. 1, by means of the rods 111, the chamber 4 is shut off from the hopper by means of a slide 113, which is pushed forward by means of spring-pressed stops 115 on the rods 111, and is withdrawn on the return movement of the rods.