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 the Sale Branch, Patent Office, Holborn, W.C.
RADIAL DRILLING MACHINE.— Drnmmond.—No. 23,861, dated 7th November, 1908.—This invention relates to belt-driven radial drilling machines and has for its object to so arrange the pulleys that the radial arm may be raised or lowered or swivelled in either direction without causing the belt to slacken. The radial arm is formed with a sleeve that embraces a vertical pillar which is connected to the base and this sleeve terminates in a bearing bracket which accommodates a shaft that drives the chuck. Carried between the bracket and slidable on this shaft is a cone pulley. The sleeve of the radial arm also carries a jockey pulley which is made unusually wide and has a number of grooves formed thereon. A similar pulley is mounted in bracket that is secured to the vertical pillar. The driving pulley is mounted directly beneath the bed and the gut or belt is passed from the driving pulley over the pulley carried by the vertical pillar, from thence round the pulley mounted at the lower end of the sleeve. arid thence over the pulley carried by the upper end of the sleeve. It will be seen that on the radial arm being adjusted vertically the two wheels carried hs. its sleeve will also partake of the vertical adjustment and therefore no slackening of the belt will take place. Also owing to the unusual wide jockey pulleys the radial arm may be swivelled within wide limits.
REVERSIBLE INTERNAL COMBUSTION ENGINE.— Kitchen.— No. 25.337. dated 25th November, 1908.— This invention relates to internal-combustion engines of the type in which the piston reciprocates within a revolvingsleeve valve which registers, at the proper time, with ports provided in the cylinder walls. According to the present invention a second sleeve is provided which is interposed between the first sleeve valve and the cylinder wall. and is provided with two exhaust and two inlet ports. The cylinder has t wo inlet ports which communicate with a single suction pipe and one exhaust port, and it is the function of the secondary sleeve to bring either of the inlet ports into operation mid thus alter the position of the inlet port for the purpose of revers• ing the direetion of rotation of the engine. The secondary sleeve has an arm which is connected, by means of a rod, to a band lever that rocks in a quadrant, and can be locked in two positions. Also
connected to the hand lever is the shaft on which is mounted tbe worm that drives the rotary valve, and on changing the position of the secondary sleeve for
the purpose of reversing the rotation of the engine, the worm will act as a raek
and also rotate_ the primarysleeve valve through a similar angle.
SPARE-WHEEL ATTACHMENT.— Lefevre.—No. 11,180, of 1909, dated under Convention 30th December, 1908. --This invention relates to an improved device for attaching a spare wheel to the permanent. wheel of a vehicle. It consists of two hooks which are suitably shaped to embrace the rims of the wheels. These honk members are connected by means of a short shaft, which is secured to that hook member which embraces the permanent wheel and is pivoted to a bolt which extends through the body portion of the other hook member and has a butterfly nut. Slidable on the short shaft is a distance-piece which is suitably shaped to receive the rims of the spare wheel and the permanent wheel, and this distance-piece serves to maintain the two rims at a sufficient distance apart in order to prevent the tires from becoming distorted.