Patents Completed.
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Complete specifications of the following patents will be sent to any address in the United Kingdom upon receipt of eightpence per copy at Sales Branch, Patent Office, Holborn, W.C.
MAGNETO.—Guenet.--No. 18,106, dated 28th August, 1908. —This invention relates to magneto machines, the principal feature of which is the ar rangement of the condenser. The conclenaer (Al is enclosed in a fixed box arranged at the end of the armature. This arrangement has the advantage that the condenser is readily accessible, and the whole space between the magneto poles may be utilised for the core and the windings. A relatively large core and its windings may therefore be embodied without the necessity of increasing the size of the whole machine in any tray. The claim also covers the particular disposition of the parts substantially as shown in the illustration.
RESILIENT WHEEL. — Oldfield and Another.—No. 13,341, dated 23rd June, 1908.—According to this invention a wheel is provided, in addition to the ordinary tire, with pneumatic cushions interposed between the feline of the wheel and the spokes. The wheel is divided and the two halves are bolted together. Arranged on the inside of the felloe is a series of chambers correspond. lag in number with the spokes. Within these chambers are arranged pneumatic tubes which take the form of a horseshoe. In the dove-tailed spaces presented by the horse-shoe the ends of the spokes rest, so that an elastic resistance is offered -to the spokes, both in a radial and circumferential direction. ROTAR1"1-WO-CA't 'LE ENGINE. — Ilarding.—No. 9,681, dated 4th May, 1908.--This invention relates to rotary internal-combustion engines of the twocycle type. The cylinder and piston are of annular form, the inner wall of the cylinder and the outer wall of the piston being provided with piston rings. The pistols reciprocates iu the cylinder and has two connecting rods which drive a double crankshaft mounted as usual in the crankcase. Inlet ports to the annular cylinder are provided in the inner walls of the latter and these are covered and uncovered by the piston. In line with the inlet port, exhaust ports are provided in the outer walls of the cylinder, and these communicate with an ex
pansion chamber having small openings leading to the atmosphere. On the upward stroke of the piston an explosive mixture is drawn into the crankcase, and on the following downward or power stroke this mixture is partially compressed. When the piston has arrived at the limit of its downward stroke the inlet and exhaust ports will be uncovered, and, consequently, the inert gases will escape to the expansion chamber, and the partially compressed charge will rush into the cylinder, thus assisting in the expulsion of the exhaust gases. The cycle is then repeated. The cylinder and crankcase are mounted in suitable bearings, so that they may rotate about their longitudinal axes. On the crankshaft is mounted a bevel wheel which gears with a smaller bevel wheel that is connected with the crankcase, so that rotation of the crankshaft will impart rotary motion to the crankcase and the cylinder.
OIL 111712NER.—Scotta—No. 13,072, dated 19th June, 1908.—This invention relates to oil burners for steam generators of the type in which, when a reduc
tion in heat is required, a certain numof the jets can be put out, entirely leaving only such a number of jets burning as is sufficient to keep enough paraffin vaporised to ignite either a number of or all the other jets instantaneously. For this purpose the vaporising coil is led down to a valve chamber which has three outlet passages to the jets arranged in different horizontal planes. The two lower outlet passages are controlled by a conical rotary valve which is adapted to establish communication with the outlet passages or completely to close them as desired. The uppermost passage is beyond the conical valve, so that vapour is always supplied thereto, and, consequently, one set of jets is always kept burning fully. This arrangement is applicable to any reasonable number of sets of jets.