Patents Completed.
Page 20
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FUEL CONTROLLER. — Clarkson and Another.—No. 6,747, dated March 30th, flow of liquid fuel to the burner of a. steam generator is con
trolled by the combined effect of temperature and pressure of the contents of the generator. The steam from the generator passes by the conduit (As) through the expansible tube (Al. The tube as it expands operates a lever (F) by bearing against a lug (El) thereon. The lever (E) also carries a lug (E2) against which one end of a spring-controlled piston (CI) bears. The piston works in a chamber (C4) communicating by a conduit (D) with the generator. It will thus be seen that pressure in the generator operating upon the piston (C21 as well as the temperature of the steam in the tube (A) effect the required control.
TYRES.—Hartridge.—No. 7,728, dated April 11th, 1905.-1he wheel is provided with a series of radial compartments each in the form of a V with the base flattened. The base of each compartment is of the same dimensions, but in depth they are graduated off so that no two are of the same depth. In these compartments rubber blocks are secured by convenient means, and it follows that when they have been worn down that in the shallowest compartment may be thrown away as Eseless, but the others are advanced round the wheel one step so that each is brought into a shallower compartment than that which it formerly occupied, and a new block is inserted in the deepest compartment. By this means it will be seen that only the smallest block is wasted, and that each block in turn enters all the recesses -until it is reduced to the dimensions of the smallest block, and when too small for that compartment it is thrown_ out.
WATER FEED.—Finch.---No. 5,666, dated March 17th, 1905.—A float is situated in the generator (S), and is operatively connected with a rod (R), which extends up through a valve chamber (X). The valve chamber communicates by a conduit (E) with the top of the feed water chamber (H) and by a conduit (E2 )with the bottom of the same. Within the Valve chamber are two valves (B, B21, both carried by the rod (R) controlled by a spring (s). The lower end of the chamber (R) communicates with the boiler, and the upper end is connected with the steam dome (Si) by a conduit (N). As the water level falls in the generator the float pulls down the rod (R) until a shoulder (e) on the same passes two catches (C), so that it is retained in the lowered position.
The valves are thus open, and the feed water gravitates from the chamber (H) into the generator, whilst steam enters the feed water chamber by the conduit (E.). As the float rises it displaces the catches (C) so that the rod (R) is raised by its spring (s) and the valves are closed. The feed water chamber now contains a certain amount of steam which has entered as the feed water passes out. This steam soon condenses, and then a nonreturn valve on the feed water tank automatically opens and admits water from a suitable supply.
LUBRICATOR.—Bird and Another— No. 26,492-05, dated under Convention December 23rd, 1904.--A closely-wound spiral spring (12) is mounted in the lubricator cup for the outlet passage (4), and to the free end of the spring is secured a weight (15). So long as the lubricator is stationary the close winding of the spring prevents oil from flowing, but when the lubricator is vibrated by the running machinery the weight (15) swings from side to side and slightly opens the coils of the spring so that oil passes through to the burner. A plate (16) limits the movement of the weight (15) •
SPRING DRIVE.—Foot.—No, 5,466, dated March 15th, 1905.—Springs (e) are mounted upon a frame (d), which is secured to the road wheel. The springs are secured to brackets (it), and engage pins (g) fast on the driving sprocket or other member by which motion is to be transmitted to the wheel.
SPANNER.—Brooks and Another-No. 7,852, dated April, 13th, 1905.—The spanner comprises two independmt 'taws (..r and .4). The jaw 4 slides freely upon pins (e, d}, and the engaging ends (al, 311 are kept apart by A spring (e). The gauge of the jaws is adjusted by a nut (c1) on the pin (e), and a nut (el) on the pin (d) is adjusted for maintaining the parts parallel.