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.
CLAMPS F 0 R AUXILLIRI: WHEELS.--Ageron and Another.—No. 26,737, dated 17th November, 1909.— This inventien relates to devices for clamping an auxiliary wheel to the road wheel of a motor vehicle. The device comprises two jaws or hooks pivoted to gether and a third or middle jaw which is carried by the pin about which the pivoted jaws turn. The pin engages an elongated hole in the middle jaw. Pivoted to the jaw that embraces the wheel of the car, is a yoke which is adapted to swing up and engage the jaw that embraces the auxiliary wheel. This yoke carries a setscrew, by means of which the two outer jaws are drawn together. A spring is provided which tends to draw the middle jaw and the jaw carrying the yoke together, so that, when the device is being applied, it can be sprung into position and will support itself until the yoke finally secures it. In order to prevent the setscrew from becoming, accidentally loosened, a sleeve is provided which is adapted to engage
the head of the setscrew and a similarlyshaped portion of the yoke. A spiral spring normally holds the sleeve in engagement with the head of the setscrew, but., when adjusting the screw, the
spanner or tube presses the sleeve back against the action of the spring. Three ot these clamping devii' s an? spaced equidistantly around the circumference of the wheel.
LUBRICATION INDICATOR. — Atkinson and Another.—No. 11,972, dated 21s1, May, 1909.—This invention relates to a. device for indicating whether the lubricator pump is acting or not. It is usual, in such indicating devices, to carry the discharge pipe of the pump to an indicating device, arranged at a convenient spot, for instance on the dashboard, so as to be in sight. of the driver. The indicating device is actuated by a piston working in a cylinder, which is in communication with the discharge pipe of the porno. 'When the pump is working, the piston is moved upwardly against the action of the spring, and, when the pump is not. working, the piston is moved hack again by the spring. According to the present invention, the piston and the plunger are arranged in close proximity to the pump, and the movements of the plunger are communicated to an indicating device, arranged at any convenient point, by means of a Bowden wire rri. similar connection. This arrangement avoids the possibility of any leakage of oil in the vicinity of the dashboard.
SPARKING PLUGS.—Poorter.—No. 19,082, dated 19th August. 1909.—The object of this invention is to provide a sparking plug having electrodes that. present a plurality of paths for the spark.
The electrodes terminate in wire ends which are bent. at right angles and arranged side by side, but not in parallel relation. The electrodes are also preferably arranged in different planes. The
spark takes place in the shortest gap between the electrodes, when the magneto is supplying a weak current, but, on the current increasing, sparking occurs along the whole length of the electrodes. In this way the life of the plug is very considerably increased.
LOCK-NUT. — Levy-Maurice. — No. 16.862, of 1909, dated under Convention 30th September, 1908.—A bolt is provided which has two threads, one for the ordinary nut and the other for the locking nut. The thread for the locking nut is the opposite hand to the thread carry Mg the ordinary nut, and it has a coarser pitch. When the two nuts are screwed home, a cap is fitted over them: to prevent them from turning relatively. to one another.