Abridgments of Interesting Patent Specifications.
Page 18
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Carburetters, Wheels, and Ignition.
No. 20,506, dated September 23rd, 1904. —Carburetter.—E. W. Walford, London. This carburetter comprises a float feed .chamber (B), having a fuel nozzle (M) which projects into a mixing chamber (L). The lower end of the chamber (14 is open to the atmosphere, and in it is pivoted a plate (0). By moving the plate so that its free end is brought nearer to, or further from, the nozzle (M), the velocity of the air past the nozzle can be regulated to suit the requirements of any engine. A butterfly throttle (RI is provided at the -upper end of the mixing chamber. All of the parts in this carburetter are adapted to be readily removed.
No. 3,613, dated February 21st, reo5.— Carburetter for paraffin.—Westmacott, of Messrs. Woodnutt and Co., Isle of Wight. —In the mixing chamber (a) a group of tubes (b) is mounted, these being carried by a detachable cup (b2). Above the tubes is an outlet (a3) to the cylinder. Communicating with the chamber (a) is an inlet (all) connected with the exhaust of the engine. The exhaust gases, after passing among and heating the tubes, escape by an outlet (aI0). When starting the carburetter, the flame of a blow lamp is admitted through an orifice (a151 for the purpose of initially heating the tubes. The suction of the engine draws air through orifices (c1) and lifts the diaphragm (d2) situated below the tubes and connected with the valve (d*). When the valve (d*) is raised, paraffin is allowed to pass from the nozzle (c5) and is carried with the air through the tubes (b). In passing through the tubes the paraffin is vaporised, and additional air if required is drawn in through the suction valve (a6) above the tubes.
No. 17,518, dated August iith, 1904.— Vehicle wheels.—Prentice and another.— This wheel belongs to those of the duplex order, in which two separate tyres are employed. As mud is likely to collect in the space beiween such tyres and so destroy the non-slipping quality of the wheel, each tyre according to this invention is mounted on a separate rim. The rims (A A) are carried by spokes (C CI) secured between flanges (DI) of the hub (DI. The rims are connected by bolts (B3) and separated by distance plates (136). The mud collected between the tyres can thus escape by passing up between them and between and over the rims.
No. 18,615, dated August 27th, 19o4. —Make and break device.—Carpentier. Paris.—A double "make and break" of sensitive action is obtained by supporting the armature IF) (Figs. r and 2) upon double knife edges (LI, MI). The armature is kept down by a spring (N), and oscillates between the electro-magnets (A, AI). The effect of the spring pulling upon the knife edges is to complete the oscillation in either direction' once the armature has passed over the vertical position of the knife edges under the action of either electro-magnet.
A modification of this arrangement is shown in (Figs. 3 and 4), in which the armature is carried between knife edges (M, MI). The armature itself also carries a knife edge (L), and a loose doublegrooved block (K) is inserted between this knife edge and the knife edge (M),.. The knife edga (M) is carried.by a spring, and the block (K) ensures the completion of an oscillation in either direction, when once the armature has been moved beyond the vertical position of the knife edges.
Our patent abridgments are made by Messrs. Boult, Wade and Kilburn, International Patent Agents, itt and 112, Hatton Garden, London, E.C.