Patent GB-191302095-A (GB)
Title: Improvements in Brick Machines.
Inventor: RIDER EBENEZER WANZER
IPC: B28B15/00
Filed: 1913-01-25
Granted: 1913-09-25
Abstract: 2095. Rider, E. W. Jan. 25. Tamping- machines; feeding and measuriug; delivery.-A brick machine comprises a floating mouldblock 2, a series of normally stationary lower plungers 6 carried by a cross-head 5, and a series of upper drop plungers carried by a cross-head 7. Initially the cross-head 7 and block 2 are raised and held by catches, and after material has been fed into the moulds, the cross-head 7 is released and, in falling, it releases the mould-block 2, which forces the material against the lower stationary plungers and imparts a first pressure, a second pressure being imparted by the falling upper plungers ; the cross-head 7 is again raised and the plungers 6 are lowered for the insertion of a pallet which is then pressed up against the bottom of the mould-block by the plungers 6 ; the cross-head 7 is again released and compresses the material against the pallet ; the cross-head is then locked in its lowest position and the mould rapidly raised leaving the bricks on the pallet ; finally the cross-head is rapidly raised and the pallet with the bricks moved forward for discharge. The cross-head 7 is raised by rods 64, Figs. 1 and 2, operated from the shaft 60 by a crank 67 and a crank-pin 65 on a gear-wheel 62, and is held by catch bolts 68 which are released by a pin 77, Fig. 1, on the wheel 62 engaging with an arm 76 of a bell-crank lever 74 and acting through a link 73, lever 72, shaft 71, and lever 70 ; the projection 76 may be withdrawn from the path of the pin 77 by a hand-lever 78. Levers 35, hinged to plates 36 adjustable vertically on the framework 1, are formed with inwardly-projecting hook-like portions 40<1>, Fig. 2, at their lower ends adapted to engage shoulders 40 on the mould-block 2 and support it in its highest position, and are also formed with shoulders 39 which are engaged by the cross-head 7 during its descent whereby the levers are deflected and the mould-block is released. Material is fed to the moulds from a hopper 10, Fig. 18, by a feed-box 11 which is reciprocated across a table 143 by a crank 136 mounted on a shaft 135 ; the feed-box passes beyond the moulds to ensure even filling, and may be fitted with an agitator operated by pinions engaging fixed racks, and with a brush for cleaning the upper plungers. To ensure correct alinement, the hopper and table are adjusted simultaneously with the mould-block catch-levers 35 by rods 165, 172, Fig. 1, depending from the plates 36. After its fall, the upper crosshead 70 is locked in its lowest position by catch-bars 41, Fig. 13, which are forced into engagement with recesses in the cross-head guides 33 by members 45, working in oblique guides 46 and mounted on a bar 49 working in slots in the cross-head ; on the descent of the cross-head, the momentum of the bar 49 carries the members 45 downwards and operates the catch-bars 41 ; the catch-bars are withdrawn by the raising-rods 64, Fig. 1, acting on the ends 50 of the bar 49. Cams 81<1> mounted upon a shaft 80 operate the lower plunger block 5. and cams 188, engaging with rollers 186, raise the mould-block 2. The pallets 16, Fig. 18, are fed from a pallet hopper 15 by dog bars 115 furnished with spring pawls and reciprocated by levers 127 oscillated by eccentrics 126 on shafts 110 ; the pallets are raised through rods 97 by levers 111<1> and cams 112, mounted upon a shaft 105, during each alternate reciprocation of the bars 115, so that a pallet is fed only during each second reciprocation, which corresponds to each second fall of the cross-head 7. Motion is imparted from a main shaft 55 furnished with a pulley 58 to the shafts 60, 80, 105, and 110, which are so geared together that the shafts 80, 105 make one, and the shafts 60, 110 make two revolutions during each cycle of operations. The feed-box operating- shaft 135 is operated by stop gearing 138, 139, Fig. 1, from a shaft 139' driven at the same speed as the shaft 105 through gears 139<11>, 107. Springs 175, Fig. 2, engaged by projections 180, limit the fall of the cross head 7.