PATENTS SUMMARIZED.
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An interesting practical invention apmars to be that of J. R. Churchill, No. L14,657; which has reference to the construction of commercial motor roadwheels. The object of the inventor has been to facilitate, as much as possible, the removal of worn tyres, and their replacement by new ones. . The wheel is formed in two parts, the inner one being integral with the hub, the outer with the rim, and it is suggested that in many cases it will.he found preferable to vulcanize the solid tyre direct on to the rim of this type of wheel. The two parts are bolted together' but owing to the fact that, the central portion is formed, as to its exterior, like the male portion of a cone clutch, and that the outer is bored to fit upon this, little or no driving strain has to boisustained by the bolts which arc used to draw these two components into close engagement. In order that no difficulty may be experienced in separating the two portions of a wheel;after a lapse of time, it is suggested that a liner of non-rusting metal, or of fibre, be interposed between the two. It will probably be found advisable permanently to secure this liner to one or*other of the components, and this will also, DO doubt, besides serving the above-mentioned purpose, be of use in fincreasing the frictional grip of the one part upon the other, thus further ensuring that no driving strain be borne by the joint bolts.
H. Lucas, in No. 114,758, patents a simple fastening for the front cover and glass of an electric lamp for motor vehicles.
Thomas Green and Son, in connection with their motor rollers, now use the water ballast tank as a radiator, arranging horizontal pipes through the tank for the passage of cooling air. The specification istNo. 114.733.
S. J. Murphy and another patentee (No. 114,644), describe a method of mounting a centrally-pivoted axle on gymballs inside a final drive gear, so that such an axle may, at one and the same time, act as a steering and driving axle. The invention is shown on the drawing applied to a vehicle driven and steered on all four wheels.
Alldays and Onions, Ltd., in No. 114,811, have patented the application of means of increasing the weight of a tractor for road use and decreasing it when: on the land. As described, the means consist of a water ballast cylinder carried over the rear axle. This is filled for road use, and emptied for agricultural purposes.
A two-fuel carburetter, the operation of which, as regards the supply of heavy or light fuel to the engine, is. automatic
and self-controlled by the speed of the vehicle, is the subject of No. 114,656, N. Andrews. A governor, driven directly by some part of the chassis such as the c,ardan shaft or a road wheel, controls a two-way valve.
J. Cook, in No. 114,740, has patented an arrangement of angle-iron spuds mounted on hinges within the rim of a tractor wheel, and connected one to another, all of them being disposed so that they may occupy one of two main positions (1) so that they are entirely within the rim of the wheel ; (2) so that they project from the rim and form spuds as are customarily used on agricultural tractors.