Patent GB-190602897-A (GB)
Title: Improvements in Scooping Apparatus, or Machines, for use in Levelling or Transfering, Sandy and other Ground.
Inventor: MCLAREN JOHN
Filed: 1906-02-06
Granted: 1906-06-07
Abstract: 2897. McLaren, J., McLaren, H., and Bills, S. Feb.6. Excavating.-Apparatus for levelling ground comprises two or more scoops arranged one behind the other and mounted on a frame. Means are provided for operating the scoops by the hauling-gear, and rudders are placed at each end of the frame. Fig. 1 shows the rear part of the apparatus, and Fig. la the forward part. The scoops B, B<1> are pivoted to the frame A, which is carried on wheels C, C<1> running in adjustable bearings. The hauling-chain F is connected to a block G, which runs in inclined guides H, so that, when the block is in the position shown, the pull of the chain F is transmitted directly to the frame A by the block bearing on the eye a<2>. The scoops are coupled together by side-rods J, and stops K prevent them from entering the ground too deeply. A sector L, L' is secured to each scoop, and to the sector L<1>, which is double, is attached one end of the chain M, the other end of this chain being attached to the block Q. The length of the chain is adjusted by the screw N to ensure that the scoops enter the ground before the frame A is pulled. When the scoops have received sufficient soil, the pull on the chain F is released and the chain 0, at the other end of the apparatus, is operated. This chain passes under a guide-pulley p and around a sheave in a snatchblock R, and is secured to the frame A. The snatch-block runs in inclined guides S, Fig. 3, and is connected to the chain V passing over the sector L<1> by a strut-link U. The chain V is connected to the forward part l of the sector. Projections T on the block R engage a hinged catch W when the chain O is hauled to hold the scoops in the raised position, while the frame is being drawn to the place of discharge by a further pull on the chain O. The catch W is raised by means of a lever Y to allow the scoops to be still further drawn back for discharging, or to allow the scoops to be drawn again into an operative position. When discharging, the thickness of the soil &c. spread is determined by the adjustable stops Z', which engage with the stops Z<2>, Z<3>. After discharge, the chain F is again hauled and raises the scoops until the projections T engage the back of the part w<2> of the catch W. When the apparatus is in position for scooping again, the lever Y is raised to release the projections T. The scoops are made of great width and of short length, by forming them somewhat in the shape of a hollow girder. Vertical division plates connect the top and bottom members of the scoops, and one of these division plates may be extended to carry the sectors L, L<1>. Rudders 1 for steering the machine are connected to spindles 2, which are squared at their upper ends to carry worm-sectors 5 operated by worm-wheels 6 rotated by the handles 9, for altering the angular position of the rudders. Mounted on the sectors 5 are bearings 10 carrying pinions 13 engaging racks 14 on one side of the upper end of the spindles 2 for the purpose of raising or lowering the rudders.