Patent GB-189911256-A (GB)
Title: Improvements in Machines for the Manufacture of Bricks.
Inventor: AYOTTE THEOPHILE EDOUARD
Filed: 1899-05-30
Granted: 1900-05-26
Abstract: 11,256. Ayotte, T. E., and Charboneau, A. A. May 30. Moulding bricks; bricks, drying. Clay or other material is placed in a cylinder or pug-mill casing 36, is mixed by beaters 38, and is forced downwards by screw blades 39, through a grating or die plate 46, into moulds 26 in a frame 25, which is reciprocated in guides on a horizontal table by a cam and lever. The clay in the moulds is cut off at the mouth of the die by wires carried by a horizontal frame reciprocated by a bellcrank lever acted on by a cam 49 on the shaft 14. The moulds and pressing plungers are in duplicate, and one set of bricks are pressed in one set of moulds while the clay is fed to the other set of moulds. The upper plungers 2, 3 are operated by cams 11, connecting-rods 10, 13, and levers 6, 7 ; and the lower plungers are operated by cams and levers 22, 23. Guide-pins 35 fixed to the rods 10, 13 move in vertical guide-slots in the frame. After the bricks have been pressed in the moulds, the lower plungers are forced downwards out of the way, a carrier frame is placed on carrier chains, the bricks are expelled from the moulds through apertures in the table 55 on to the carrier frame by the upper plungers, and the carrier chains with the pressed bricks are moved to one side of the machine by means of a cam. toothed segment, pinion, and chain gearing. The pugmill casing may be divided by a vertical partition into two compartments, each containing a shaft rotated by chain and toothed gearing. The plungers are connected to the operating-levers by links, and the ends of the levers or rods acted on by the cams are fitted with rollers. Steam may be supplied to spares within the plungers to prevent the adhesion of clay. The carrier frames with the pressed bricks are transferred to the shelves 91 of a car 92 by an endless travelling carrier 85, driven intermittently by a shaft 68, clutch 69, and bevel-wheels 75. 88 as shown in Fig. 10. The endless carrier is mounted between vertical channelled guide-bars of a frame 67, and is raised by cables which pass over pulleys at the top of the frame and round pulleys 78 on a shaft 74 rotated from the shaft 68 by the clutch 69 and an endless chain. When a board or frame of bricks is fed from the machine on to the endless carrier 85, it comes in contact with a projection of a bar 95 and throws the clutch into engagement to drive the shaft 74 and elevate the carrier to the level of the shelf of the car. A vertical shaft 89 at the side of the frame carries a series of stop-pins 90 arranged spirally, and a ratchet-wheel or pinion 93, fixed to the shaft, is rotated a tooth by a pawl or dog 94 when the bar 95 is moved. When the frame 85 comes in contact with one of the stop-pins 90, the shaft 89 is raised, and the clutch is thrown over to the other side by a rod 100 and levers, in order to drive the endless carrier 85 for the purpose of transferring the frame of bricks on to the shelf of the car. The empty car is run up a pivoted section 101 of rails, until pins 103 of the car come in contact with inclined blocks 104 of the frame 67. and the rails and car then assume a horizontal position as shown. When a loaded car ia disconnected from the frame by withdrawing a coupling-pin bv means of a hand-lever, the car tilts the rails 101 and runs down on to the horizontal fixed rails 102, and raises an empty car into position to receive a load by means of a cable 122 attached to clutches or carriages as shown in Figs. 14 and 15. A pivoted weighted arm 114 of the clutch 111 engages with the loaded car, and a pivoted catch 119 of the clutch 116 engages with the empty car which runs on side rails leading to the rails 101. These clutches are fitted with vertical and horizontal rollers arranged to run on central rails, and the clutch 116 carries a weight 120. When the empty car reaches the frame 67, a lower projecting arm of the catch 114 comes in contact with a projection 121 of the central rail. and throws the catch out of action. The catch 119 is released at the same time, and the weight 120 causes the clutch 116 to descend to engage with another empty truck. A stop piece 114<x> limits the motion of the weighted arm 114. When the hricks are to be piled up in a yard, the lifting and depositing devices shown in Fig. 17 are used. A frame 132 loaded with bricks is run on a truck 134 under a hoisting-frame 135, to which it is secured by pins 136. A cable 143 attached to the frame is wound on a drum 125 by a crank 129 and endless chain 127. The drum is arranged to slide on a feather or key of the shaft 124, and is moved sideways by a horizontal lever and yoke 130. The frame 132 is fitted with a sliding bottom which is withdrawn by a rack 137, operated by a crank and pinion, when the frame has been moved into position over the pile of bricks. A frame 123, carrying the lifting-tackle, is mounted on wheels which run on rails in the drying-yard.