Patents Completed.
Page 22
If you've noticed an error in this article please click here to report it so we can fix it.
Sphinx
Sparking Plugs. Brown and Barlow Carburetter. Dungey-,
Weeks Agricultural Tractor. Wheel-rim Construction.
Copies of complete specifications of the patents pubiished on this page can be obtained from the Sales Branch, Patent Office, Holborn, W.C., at the cost of sixpence for each specification.
Ft G. LoNcFonn, W. W. LONGFORD, AND W. A. CLARK, No. 8696, dated 12th June, 1915, Patent of Addition to Nn. 7365 of 1913.—The main insulator of a sparking plug is isolated from contact with the hot gases by a special hood surrounding the outer end of the central electrode. This hood is made by lining a tube with mica and packing into it mica washers which will fit closely against the central electrode. A copper washer may be interposed between this hood and the main body of the insulator.
In order to facilitate cooling, the tube of the hood is made of copper, and a copper sheath is also provided on the main electrode extending from near the sparking end well up into the main insulator. The annular sparking contact, which is usually a sheet of nickel, is recessed into the metal body of the plug, but it is assisted in cooling by bending over the copper tube of the hood to lie in contact with the inner side of the plate.
E. F. GOOTITEAR, No. 3535, dated 5th March, 1915.—A prior patent, No. 25,371 published in 1913, by theisame applicant, describes a sheet-steel wheel made in three parts, namely, two sides, each pressed to the shape of one half of the hub, spokes, and rim, arid subsequently welded together, and a channelshaped rim which further unites the sides at the rim and receives the beads of the tire when this is in place.
This present invention describes a press tool for curling over the sides of the rim to the shape of the beads of the tire. -There is an upper die with an annular groove of the section of the outside of one edge of the finished rim, and a lower die with an upstanding ridge to fit the inside of the edge. In order to get it into place the lower die is made in sections hinged together; it is supported by a ring, which receives and fits the half of the rim not being operated -on, and so centralizes the wheel. Additional centralization is effected by a boss fitting the hub. CLEMENT BROWN. AND BROWN AND BAELOW, LTD., No. 3108, dated 26th February, 1915.—The accompanying drawing shows the arrangement of the jet and throttle in a carburetter. The throttle is cylindrical in form with a double tapered passage through it, and it is arranged to be turned about a vertical axis in a horizontal air inlet passage. The jet which is pre
ferahly of the submerged type is mounted centrally in the throttle.
A pilaf-jet is provided in the casing below the throttle and it communicates with the choke tube by a side passage and side opening in the throttle. Above the throttle an annular chamber is provided which also communicates with the choke tube through an opening in the upper wall of the throttle. This chamber is in communication with the atmosphere through a revolving perforated disc. When the throttle is closed, or nearly so, the pilot jet becomes operative, the air supply being drawn in through the upper annular chamber. Adjustment of this air supply is unaffected by the position of the throttle itself, and it is immaterial that it is open when the throttle is widely open, because its effect is IT. P. DuNoEy AND W. WEEKS AND SON, LTD., NO. 6964, dated 10th May, 1915.—A simple and 'cheap construction of motor tractor is described in this specification. The two rear driving wheels are each provided with cleats which project sideways beyond the wheel to give an efficient grip and they are driven by an internally-toothed ring from a single transverse shaft. The usual style of mounting the engine and transmission in a commercial vehicle is applied with the exception that the differential is omitted.