PATENTS SUMMARIZED.
Page 22
If you've noticed an error in this article please click here to report it so we can fix it.
Specification No. 108,461, by J. E. Ponsot, describes a remarkably simple design of sparking plug. The metal body of the plug is bored with a central tapered hole. The insulator, which is preferably of compressed mica, is in the form of a truncated cone, and is built round the central terminal. The upper end of this terminal is supported from the metal body of the plug by an inverted cap of porcelain. Holes are cut both in the metal body of the plug and in the porcelain to facilitate ventilation and consequently cooling of this plus. It is clear that increased pressure within the engine cylinder will have a tendency to tighten the joint between insulation and. plug: Heenan and Fronde, Ltd., in patent No. 113,205, describe a construction of ball bearing which is particularly adaptable for use on a crank-pin, where, in addition to rotary motion of the pin there is a circular movement which causes centrifugal force to operate tending to crowd the bails of the bearing to ono side. In the design described, suitable covers are incorporated, one on each side of the balls These covers are connected by a number of pins, and upon each pin are three rollers. Two external ones position the covers and pins with respect to the outer ball race. The central roller is " diaboio " shaped, and these inner rollers together • serve to space the balls correctly round the inner race.
W. J. Hickman, in No. 113,213, describes an arrangement of seats for the top-of an omnibus designed to enable the greaternumber of passengers to sit on the offside;and thus counteract the effect of road camber.
In No. 113,216; P. Buchanan describes &construction of cylinder, using two metals. One of these materials provides strength for the casting. This part is formed first, and a large number of holes are cast in the walls of the cylinder. The other material is one which is a,particularly good conductor of heat, and this part of the casting is cast in and about the former.
One of tho principal facts to he Conaidered in arranging for the heating or cooling of a running stream of water is that the thinner the stream, and the more quickly it flows, the more efficient is the cooling, other things being equal. It has been the practice in connection with radiator construction, particularly for aircraft, to attain this effect by lining the water tubes of the radiator with a secondary air tube, so that the water to be cooled is merely a thin film flowing quickly along the annular space between these two tubes. F. J. Bell, in specification No. 113,238, carries this principle a stage further, and so arranges the inner air tubes that a stream of cold air is continuously passing through them. He effects this either by arranging for the lower ends of the air tubes to face the direction of travel, in which case there is a natural draught through these tubes, or alternatively he uses a fan and draws cold air through them.
• J. a M. Stanfield, in No. 113,480, constructs a two-stroke compound pistoned engine with cylinders arranged in pairs.
F. B. Wells, in No. 113,497, refers to an anchor for use in connection with a cable ploughing set of any description. When in use, the anchor rests upon four disc wheels, which sink -into the ground, and offer resistance to a pull sideways. This is the usual arrangement for such anchors. For use on the road, wheels having wider rims are preferable. This inventor arranges the road wheels on bell-crank levers, which are fitted with worm gears so that they can be raised or lowered by band. When lowered, they lift the disc wheels clear of the ground, and the anchor can then be trailed either through the fields or along the roads. When raised to the upper position, they allow the discs to sink in the ground to the necessary depth. In the censtruetion is also included a small internal-combustion engine coupled to a horizontal drum by the aid of which the anchor can be moved along the field.
V. Bendix, the well-known American patentee. of the .eleetric starter which bears his name' describes one or two improvements in No. 113,527. The principal objects of these modifications are to ensure ease of engagement of the starting pinion with the gear cut on the flywheel; to ensure the pinion remaining out of gear after the engine has started, notwithstanding the fact that the current to the motor has not been cut off, and that the latter is still revolving; and to provide a form of spring which will not be liable to drop in between the two sliding portions of the drive.
G. Sweetser, No. 113,529, patents a vaporizer for paraffin which does not call for the use of petrol for starting purposes.
All American patentee, L. E. Tichenor, in No. 113,564, describes a construction of spring wheel. L. Bleriot, in patent No. 113,586, describes a construction of bearing for the fibre bushed spindle of a magneto contact breaker, which allows of its being suitably lubricated.