Patents Completed.
Page 20
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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.
FL XIII LE SHAI T herimal arid
Others.—No. 12,578, dated 27th .139.—This invention relates to flexible shafts, and particularly to those intended for transmitting the metimi of the wheels of a vehicle to a taximeter or like instrument. The shalt is made up of a number of long lied
short links. the long links being provided at each end \\lilt lugs disposed at right ai gles to one another, and the short. links, hc ving slots, alto disposed at right angles' to inc another, in which the lugs gage. The in are held within the slt.,s by pins. The lugs and recesses are 811:1ably rounded to ,Illow the shaft to bend, and, being arranged at right angles, cuustitute universal joints, CAR BUR ETTER.—Ma x im .—N 0. 608, dated 9th January, 1909. This carburetter comprises three regulating devices, whereof one is adapted to effect the automatic regulation of the pressure of the liquid fuel, another adapted to preserve a constant density of the carbnretted airby insuring uniformity, in the tempera tun of the liquid, and a third device for effecting the automatic regulation of the amount of air for mixing with the hydrocarbon vapour. The device for regulating the pressure of the liquid consists of a spring-controlled diaphragm, one side of which communicates with the passage that conveys the liquid fuel to the jet. ihe other side being pressed by a spring,
the tension of which can be regulated. The diaphragm is connected to a valve which controls the flow of liquid fuel to the jet, and the arrangement is such that, on the pressure becoming excessive,
the diaphragm closes the valve against the. action of the spring. On the pressures being relie‘ed, the valve is again opened by the sprilig. 'the second device con PLetS ol a thermostatic regulator comprising ail enclosed receptacle, cons tanning a mixture of water and alcohol, one end of the receptacle being closed by a flexible diaphragm. This regulator is arranged within a warming chain'sr r fos the fuel, and this chamber is jacketed fur the passage of hot. water. The control of the flow of hot. water through the jackets of the warming chamber is regulated by the movements of the diaphragm of the thermostatic, regulator.
When the temperature of the foe] within the warming chamber exceeds a predetermined limit, the thermostatic regulator operates to close the valve controlling the flow of hot water through the jackets of the warming chamber. The device for regulating the supply of air consists of a piston that works freely in a vertical tube formed with lateral perforations. This piston is raised by the incoming air, so that it uncovers, inore or less, the perforations in the vertical tube. The upward movement of the piston also tun covers slots provided in the jet, so as to admit more or less fuel in proportion to the height the piston is lifted. By this means the quantity of air and fuel bear a constant relation to each other.
EXCESSSPEED TN-DICATORS. — Tiouttsflehl—No. 4,314, dated 22nd Febmars-, 1909. This invention relates to an excess-speed indicator, which is arranged to sormd an audible signal when a predetermined speed of the car is exceeded. The indicator consists of a vertical spindle mounted in ball bearings within a suitable casing and connected to any moving part of the car, the speed of which is proportional to the speed of
the vehicle. Pivoted to this spindle is an arm, one end of which is weighted and the other end carries a striker that is loosely mounted thereon. The axis of this arm is normally inclined to the axis of the spindle, and it is held in its normal position against stops by a spring, the tension of which can be varied. The whale mechanism rotates with the spindle, and the pivoted arm is adapted to swing outwardly by centrifugal action. On the set speed of the vehicle being exceeded, the striker sounds a gong which conveniently surrounds the whole mechanism, The speed at which the device operates can be regulated by adjusting the tension of the spring. The whole is enclosed in a suitable casing, which has a number of perforations or holes to allow the sound to escape_ These holes are protected by art inner casing which is also provided with holes, which latter are arranged in staggered relation to the holes in the outer cover.
SP AFSKIWG PLUGS.— Hopps.—No. 5,210, dated 3rd March, 1909.This plug comprises the usual outer casing having a redueed screw-threaded portion whereby it is screwed into the cylinder wall. Within the casing, an insulated member is arranged, the lower end of which is enlarged and is separated from the outer casing by ant asbestos washer. The space between the insulator and the outer easing is filled with refractory enamel or vitreous material, which, after being heated, fuses and adheres to the inner wall of the easing and to the outside of the insulator, thus forming a gastight joint. The central electrode fits a hole bored in the insulator and has a shoulder which is forced against an asbestos washer interposed between this shoulder and the insulator.