Patents Completed.
Page 20
If you've noticed an error in this article please click here to report it so we can fix it.
W. H. CLEGG, No. 23,510, dated 17th October, 1913.—This specification describes a simple form of rotary or sliding valve which operates with the minimum of noise, and which is arranged to prevent leakage.
The cylindrical valve, provided with suitable ports, surrounds the cylinder head and has packing rings inside and outside. The inner ring is preferably split, and the outer is a thin loose ring.
The valve is shouldered at its upper end and is seated on the cylinder casting, suitable grooves being provided in the seat. Upon the face of the valve there is a lap-jointed ring kept tight by springs. A ball bearing upon the valve permits its easy operation, the outer ring of the ball bearing being adapted to receive the drive and transmit it to the valve.
An inlet port is provided at the top to admit lubricant and air under pressure to the upper side of the valve. It is stated that the compressed air diminishes leakage and distributes the lubricating oil.
E. Wii,rassts and A. Farm, No. 26,886, dated 22nd November, 1913.—The object of this invention is to provide a convenient and cheap means for treating the ends of the teeth of gearwheels, for example, when these ends have to be rounded or chamfered.
The particular implement used is a circulas tool provided with a series of notches, and spaced so that their pitch is equal to the pitch of the wheel which is to be treated. Each of the notches is shaped to correspond with the required configuration of the ends of the wheel teeth. A pinion of the same external diameter as the tool is mounted beside it on the shaft and is engaged with the wheel which is to be treated. This pinion serves as a guide to maintain the tool in its correct spacing with the gearwheel, and the tool is pressed sideways along its shaft to engage the ends of the teeth upon which it is to work.
Various modified forms of the tool may be used in the same way.
SIR K. I. CRossnErz and W. L. P. WEBB, No. 20,520, dated 11th September, 1913.—This specification describes a method of controlling the supply of fuel to a Diesel or other type of engine in which the fuel is injected under pressure into the cylinder.
The sprayer on the left-hand side is provided with a conical jet closed by a needle-valve. This needle-valve is mounted on a piston, and is pressed forward to its closing position by a spring. When the oil is to be injected, it is allowed to enter a chamber beneath the piston so that the latter is lifted and the valve opened. The oil then passes by side channels to a series of grooves opening into the spraying nozzle. These grooves are preferably spiral or tangential; various forms of valves and sprayers are illustrated in the specification. The oil is admitted to the sprayer through a pressure chamber on the right-hand side, and is controlled by a camoperated needle-valve.
It will be seen that the pressure of the oil itself is used to open the needle-valve and consequently the latter can only open when the timing-valve has been operated by the cam. Likewise as soon as the timing-valve is closed, the needlevalve also closes and the delivery of oil spray ceases.
If the quantity of oil is to be varied the timing-valve may be given a variable lift, or the opening and closing of the valve may be regulated by other mechanism.
W. A. BESSERDICH, No. 9841, dated 21st April, 1914.—This specification describes a steering gear suitable for use when the steering wheels are also driving wheels. The axle is hollow and is provided at each end with a spherical casing to accommodate a universal coupling on the driving-shafts.
This spherical casing has vertical pins on the top and bottom, and the stub-axle engages these pins by ball-bearings, so that the wheel is free to turn as required in steering. The lower half of the stub-axle casing has a lateral extension on which is secured a segment of a worm-wheel; a worm, operated by the steering wheel, meshes with this segment.