Patents Completed.
Page 20
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A Renault Tipping Wagon. A Dustproof Resilient Wheel. Multiple-jet Carburetter. Another Caterpillar-type Tractor Design.
Copies of complete specifications of the patents published on this page can be obtained from the Sales Branch, Patent Office, Holborn, W.C., at the cost of sixpence for each specification,
L. RENAULT, No. 4562/15, dated under International Convention 28th May, 1914.—According to this invention a tipping body on a motor lorry is arranged to be operated by power from the engine.
The body is mounted so that it can be first run backwards to the rear end of the chassis and then tipped over. To this end the body is mounted on two rollers beneath its centre which run on longitudinal rails, and the backward travel and tipping movement are both effected by a single mechanism comprising a. link pivoted to the body at a point in front of and above the rollers, the link extending forwardly and downwardly to a travelling nut. The nut is operated by a lead-screw running lengthwise of the chassis. Rotation of the lead-screw first pushes the body backwards through the link until the milers engage a stop and then further rotation of the lead-screw tips over the body. The back end of the body is hinged to open, but held closed by a catch which is tripped as the body tips. The lead-screw is power-operated by a connection to the gearbox, and can be reversed to return the parts to initial position, suitable control-levers adjacent to the driver's seat being provided.
P. R. J. WiLLis (C. J. MAL/NGS), No. 1981, dated 8th February, 1915.—The main feature of this invention lies in the construction of the dust-excluding shields used on a spring wheel. The wheel is one of the type in which the radial spokes are telescopic, and a compression spring is provided between the two parts. The driving torsion is transmitted from a spider on the hub by tension springs to the spokes near the rim. The dust-excluding device is shown in elevation, in a separate view, to consist of a disc dished on one side to receive the hub, and provided with radial projections which embrace the spokes. The open portions of these projections are closed by a disc on the other side of the wheel.
An alternative guard is also described. It consists of discs which entirely enclose the wheel on each side.
T. J. DISTUILNAL, No. 426, dated 11th January, 1915.—In this carburetter a number of jets is arranged in a circle around the central stem. The choke-tubes for them are formedcin a cylindrical block fitting in the casing of the carburetter. Above this block there is a flat plate provided with a number of openings and capable of being turned so as to bring a greater or lesser number of the jets into action. The control is effected by means of two concentric tubes each
formed with triangular openings. The outer tube constitutes the main throttle and it is coupled to the flat plate by a lostmotion cerneetion. The inner tube is independently adjustable.
The object of this arrangement is that when the engine is being retarded, by closing the throttle, the engine-suction on the choke-tube area is reduced by the free movement of the outer tube before the slotted plate is moved to cover the choke tubes, and similarly a reverse action is obtained when opening the throttle. By this arrangement economy of fuel is obtained during periods of acceleration and slowing.
C. A. HENNEUSE,. NO. 51, dated let January, 1915.—The accompanying drawings show a tractor in which a single front steering wheel is provided, and the drive is effected through chain-treads. The two treads are arranged to lae driven separately so that steering can be effected by driving them differentially if desired. The tread-plates overlap the links, and are curved to form ball-races so that the chain runs on ball-bearings. The tread-plates on the links are arranged to open out when the chain is passing over the sprocket, so that even if they should become clogged with mud when in contact with the ground the openingtmovement loosens it so that it falls out and makes the chain self-cleaning. When working on very soft ground it is preferred to fix auxiliary tread-shoes on alternate links. Many novelties are embodied in this caterpillar-type tractor.