Patent GB-191328896-A (GB)
Title: Improvements in or connected with Road Sweeping Machines.
Inventor: BARNETT WALTER
IPC: E01H1/04
Filed: 1913-12-15
Granted: 1914-10-29
Abstract: 28,896. Barnett, W., and Florendine, J. Dec. 15. [Cognate Application, 12,512/14.] Sweeping-machines; taking up refuse for removal. -Relates to machines of the kind having a rear rotary brush sweeping on to a tray which is raised at intervals by mechanism, operated by the driver and coacting with the road wheels, to discharge the contents of the tray into a receptacle on the machine, the tray being afterwards automatically released so that it descends to its normal position. According to the invention, the tray is carried by a frame rocking on the wheel axle, means being employed to withdraw the tray from under the brush prior to raising it. The machine is shown in side elevation in Fig. 1. The brush 6 is carried on a frame 3 mounted on road wheels 1 and an adjustable rear wheel 9, and is driven from the axle 2 in the reverse sense to the wheels 1 by chain and sprocket gearing. On a frame 17 pivoted on the axle 2 is mounted a refuse tray 18 having upturned sides and a rear portion 20 hinged by leather to the main portion. A pivoted link 32 connects the portion 20 to a bolt 33, which is adapted to be slidden forwards to cause the part 20 to rotate upwards clear of the brush by an arm 29 carried by a rod 27 sliding on the frame 3 and operable by a spring-controlled lever 24 from the driver's seat. The part 20 is held in this upturned position by a suitable detent. As an alternative, the whole tray 18 may be slidden rearwards. The frame 17 carrying the tray 18 is adapted to be rotated to bring the tray into the dotted-line position for discharging its contents into a collecting-bin 11 by a device operated from the hand-lever 24. To this is pivoted a link 38, double jointed to a lever 39 mounted on a pin 40 on the frame 3, Fig. 4. When the lever 24 is moved forwards, the lever 39 laterally displaces a pin 41 mounted on a bolt 42 slidable in a socket 43 on the frame 17 ; this bolt is thereby pushed into engagement with one of a series of holes 45 in a ring 44 carried by the wheel 1, so that, as the machine moves forward, the frame 17 is raised into the dotted-line position, Fig. 1, to discharge the dirt from the tray 18 into the bin 11. A flap 22 hinged to the tray falls over the edge of a guideplate 23 in the elevated p sition and forms a shoot for the dirt. A tappet-block 46 is mounted on the frame 3, and is adapted to engage the pin 41 and return it along its helical slot, thereby retracting the bolt 42 and automatically releasing the frame 17, the return motion of which may be checked by suitable counterweights. The frame is supported in its lowest position by rubber pads 30 carried on a bracket 31 on the main frame 3. To retain the dirt in the tray while sweeping, it is provided with a number of transverse laths. The refuse may be dumped from the bin 11 through folding basedoors 16, or, according to the Provisional Specification 28,896/13, the bin may also be emptied by an endless system of buckets. The machine may be motordriven or horse-drawn, shaft-connexions 14 being provided.