Patents Completed.
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Spring Lubrication. Another Four-wheel Drive. Valve-gear Improve ment. Gear-change Construction.
dopies of complete specifications of the patents published on this pare can be obtained from the Sales Branch, Patent Office, Holborn, WC., at the cost of sixpence for each specification.
Lubricating Leaf Springs.
SIMON JOSEPH, No. 14,450, dated 12th October, 1915.—This invention deals in detail with the problem of protecting and lubricating leaf springs on motor vehicles. A grease pad is so wrapped round the springs that channels are left for the flow of grease along the sides as shown in the sectional drawing; cross-passages are also provided. One or more wrappiugs are added with a " gaiter ', cover of grease-proof material to complete. Grease may be forced in by a screw lubricator. The details of wrapping and fastening are very fully dealt with, and several alternative methods described and illustrated in the specification.
A Four-wheel Drive.
W. 0. Kuubt, No. 101,917, dated 14th March, 1916.—The accompanying drawings show a sectional view of the drive for one wheel, and perspective views of the end of the axle and of the stub-axle member respectively. The fixed axle is forked and provided with vertical pivots which receive the stub-axle member between them. The driving shaft is arranged above the fixed axle and carries a bevel gear meshing with a double bevel gearwheel below it. The lower part of the double wheel drives another bevel gear fixed on a central shaft extending through the wheel. The outer end of this shaft drives the wheel itself by an internal gear thus giving a suitable low speed to the road wheel. The double gearwheel above mentioned is concentric with the vertical steering pivot, so that the power transmission is unaffected by the steering movement of the wheel. It is the intention of the patentee that this construction shall be embodied in both axles of a chassis, which will then be driven or steered on all four wheels. Selfgrinding Valve.
C. JAMES, No. 16,438, dated 24th November, 1915.L-Rhe. object of this isvention is to reduce the uneven wear of poppet valves which is occasioned by pitting and erosion, and it is .P1 :ted by continually rotating tho valve to a new positioa on its seat. 02 the lewer Gad tf the valve-stem is fixed a ratchet wheel having suitable small teeth, and surrounding it is.a sleeve carrying a pawl. The sleeve is moved up and down with the valve but is rotatable on it.
A reciprocating rotary motion is imparted to the sleeve by a key on it engaging a spiral key-way or guide in the easing for the valve, and this intermittent rotary motion operates through the pawl to shift the valve round through a small angle at every stroke. Every time the valve is replaced upon its seat it therefore occupies a new position, and pitting of valve and seat is thereby reduced.
Gearbox.
'I'. GILL, No. 14,341, dated 11th Octo.bert 1915.—This specification 'relates to gearboxes of the type in which the gearwheels are each freely mounted on a hollow countershaft, and keys or dogs can be projected from this shaft to lock any one wheel. The accompanying drawings show longitudinal and transverse sections of the shaft. The special feature of the
invention is that each geai-wheel is cut away for the greater portion of its circtunference where it is engaged by the projecting dog, and the object of this is to ensure that there is always time for the dog to move to its outermost position hefere it comes into drivine. engagement with its gear-wheel.