Specification of George Gibson and James Gibson : machinery for raising and removing soil or earth from sewers, &c.

  • Gibson, George.
Date:
1860
Catalogue details

Licence: Public Domain Mark

Credit: Specification of George Gibson and James Gibson : machinery for raising and removing soil or earth from sewers, &c. Source: Wellcome Collection.

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    6r. J. Gibsons Improved Machinery for Raising Soil or Earth from Sewers. shortened to the reduced length required to begin afresh, may be again replaced, and the lower pullies, drums, or wheels placed as low down on the ground as possible, and the digging and filling operations may then be renewed. 5 In the accompanying Drawings, Fig. 1 is a side view of the machine, and Fig. 2 a transverse section. A, A, is a carriage constructed of timber, and mounted on axles a, a, a, a, of wood or iron, which pass through the running wheels B; these latter are provided with wide felloes, and are intended to run on planks or plate iron ways turned up at the sides as flanges or guides for 10 the wheels, and securely attached to timber planks C, placed on each side of the excavation. At one end of the carriage a strongly trussed timber frame¬ work is to be formed, upon which a portable steam engine D is fixed for the purpose of giving motion by means of suitable gearing to the longitudinal shafting E, on which are mounted bevilled toothed pinions e, e, which by 15 means of the bevil wheels ex, communicate motion to the transverse shafting /,/. On each of the transverse shafts/,/, tumblers or square pullies g, g, are mounted, and flanges are formed in the side faces of each of these tumblers or pullies, in order to receive the links of the endless chains ht h. Buckets i, i, are attached to every fourth link of these chains h, the links being formed 20 similar in length to the sides of the square pullies or tumblers g. Other square pullies or tumblers gx, g*9 provided with short shafting, are to be fixed at the bottom of the excavation. These tumblers, g*9 g*9 rest in or are carried by the endless chains h, h, and are held in place by small chains i*9 i*, which are secured to some of the timbers near, as shewn in the Drawings. 25 A portion of one of the endless chains h, h9 is shewn detached at Figs. 3, and a modification of the same at Fig. 4. At every fourth joint of the endless chain the joint pin is made moveable, for the purpose of facilitating the addition of a further length of chain, and the lowering of the tumblers g* as the excavation proceeds. The joint pin of the endless chains can be removed at 30 the bottom of the excavation, and necessitates but a slight loss of time con¬ sequent on stopping the chains so lengthened. Only four links with one bucket would probably be required to be added from time to time as the excavation progresses; the soil being first dug by the labourers below, is to be thrown up in the form of a loose mound or heap, as shewn in the 35 Drawing. The descending buckets will then pass into and lift the loose soil up to the top of the excavation, and on passing over the upper tumblers or pullies g, the buckets will discharge the soil on to a moveable shoot k9 k, fixed in an inclined position for the purpose of more readily discharging the soil from thence on to