Patents Completed.
Page 24
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U. H. Magneto Improvements. A Novel Sparking Plug. Motor Rollers for Cambered Roads. Welded-steel Gear-casings.
THE FIRM OF.UNTKRBERG ANT) HELMLE, No. 13,006, dated under the International Convention, 15th March, 1913.—To improve the action of the pole pieces of magnetos, pole tips have been provided which are seb-divided into teeth or fingers.
As an improvement upon this construction, this specification describes pole pieces having tips perforated to form a kind of grid. The holes may be arranged in rows, with the holes ht one row at a different ands from those in the adjaceet rows.
Besides improving the efficiency of the magneto as a spark producer, the holes may also be use.r1 as it means of bidding the t we pole-pieces in their correct. positions. For this purpose connecting pieces of tin, or some other non-magectic material, may he cast into and around the pole pieces, the perforations in the pole pieces being filled by the tin.
Jaeon and liEerteu and W. VOIGT, No 1048, of 1914, dated under the International Convention, 23rd January, 1913.Power-driven road rollers usually have a steering roller arranged centrally at the front and two driving-rollers arranged side by side at the rear. The planes of these driving rollers are usually arranged at a slight angle to each other to adapt the roller for cambered road-surfaces, but no provision has been made for using the same roller on cambered, flat or eoncave road surfaces.
The driving rollers described in the specification are mounted upon trunnions lying in the direction of travel of the road roller, and the driving rollers can be turned about these trunnions to adjust them for the particular road surfaces to be relied.
For this purpose a vertical screw is provided which engages with a mat connected by links to a bush on each roller. Thus, as the net is raised or lowered by the screw, the rollers will be correspondingly moved about their trunnions. The final-drive gearwheels on the frame must have teeth of circular curvature and be of such width as will always allow proper meshing with the gears on the rollers. W. PECK, No. 3766, dated 13th February, 1914.—The sparking plug described in this specification is intended to be screwed into the cylinder head of the engine in the usual way. The plug has a spherical chamber with a comparatively-nar.
row opening leading into the cylinder of the engine, and in this orifice the sparking points are situated.
The chamber in the plug is of such a size that the carburetter mixture will be in movement through the opening in the plug and past the sparking points at the time of sparking. The mixture will therefore be readily ignited. Moreover the mixture rushing into the chamber in the plug will clear the sparking points of any deposit. Similarly the rush of the exploded gases past, the sparking points during the exhaust is said to clean them.
The sparking points are arranged to be readily adjustable.
E. Wierraare, No. 10,147, dated 30th April, 1913,—Crearcasings are built up from sheet-metal parts which have been previously stamped or otherwise brought to shape. For a worm-gear differential-box, the body portion is formed front a short length of steel tubing. Seated upon this body part is another tube of smaller diameter but greater length, the two tubes being arranged at right angles to each other. The tithes are cut away to the required shape so that they may fit together nicely for welding by the oxv-acetylene, or the electrical, welding tool. The tube of small diameter is to receive the worm shaft, and it may be fitted with suitable ball-bearings. Stamped end-pieces are next fitted to the open ends of the large tube, being held in place by bolts. The end pieces are formed with extensions to be welded to tubes enclosing the parts of tho . rear axle.
With this form of construction the parts can be easily manufactured, arid lightness, combined with great durability and accurate fieish cau be readily obtained.
The specification also describes a built-rip casing for a. bevel. wheel driven differential.