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PATENTS SUMMARIZED •

26th December 1918
Page 22
Page 22, 26th December 1918 — PATENTS SUMMARIZED •
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The Albion Mechanical Feed Lubricator.

The Albion patent mechanical feed lubricator is well known to our readers. It has had reference in these columns on various occasions since it was:originally patented in 1905. Specification No. 120,365 describes yet, another improvement of this device. The main object of this improvement is the increase of the capacity of the pump, and the provision of means whereby different classes of lubricant can be dealt with by the same mechanism. To obviate the necessity of referring back to past numbers of this journal, we will once more briefly describe the construction of the pump as a 'whole. • In this latest development a cylindrical casing witti 'covers bolted top and bottom serves both as a reservoir for the supply of one of the classes of oil which is required, as well as encasing the whole of the mechanism. The bottom ' cover con tains all the various inlet and outlet ports to the pumps. On a central pivot in this cover rotates a worm wheel, with which are formed integral the pump barrels. Cut upon the inner surface of the top cover are two cam tracks, one for each of the two pumps which are embodied in this particular arrangement of the pump. The pump plungers are similar in design to engine-valve tappets. They are held against their respective cam tracks by light coil springs, and their reciprocating action is effected jointly as a result: of the shape of the cam tracks and the upward thrust of these springs.

The two pumps are set in relation to the centre of the revolving worm wheel disc,

with which they are integral, at different, distances from the centre. In the base plate is a number of holes with-which the open lower ends of the pump barrels register from time to time as the worm wheel revolves. These holes serve alter nately as inlet and delivery ports. In the case where oil from the main contamer is to be pumped, the inlet ports open directly into the inside of the main casing. When the alternative supply or supplies are to be drawn upon, the inlet ports are coupled to the reservoirs -of these oils by means of the usual smallbore pipes. In the same way pipes lead from the -delivery ports to those parts of the mechanism of the chassis which it is desired to lubricate.

A.s the worm wheel, which is mechanically driven from the engine revolves, the pumps are carried round with it, the cam tracks being 'so arranged that. when the open lower end of the 'Dump registers with an inlet port, the plunger is rising under the influence of the spring, and when the pump registers With the de 048

livery port, the plunger is falling_a.s a result of tho shape of the cam track at that point.

Where a number of different bearings must be lubricated by one pump, as is the case here, it will be realized that the deliveries of oil should not necessarily be equal in quantity to each bearing. Independent adjustment of the supply to any One delivery port , is provided for by means of screws which are revolvable from outside the casing ; the lower ends

of these screws coinciding with the cam tracks. The tra i ck itself s designed for the maximum pump plunger travel, and when smaller deliveries of oil than the maximum are required, the setscrews are screwed into the desired extent, and when the‘joorrect setting has been achieved, they are locked by means of an ingenious device.

Detail Improvements. •

The Daimler patent valve gear described in No. 120.285 is designed for use mainly with radial engines. One eccentric serves to operate both inlet and exhaust valves.

A new sleeve valve design is the subject of No. 113,961, by P. Desgouttes.

IL P. Saunderson describes in Not 120,216 a method of hand-control for the governor so that varying -demands for power and speed may be accommodated. The governor controls the throttle valve. An extension of the mechanism includes a rod on which are mounted, between stops, two springs. Between these two springs is a short stop, adjustable by hand, and it will he realized that the position of this adjustable stop determines the position of equilibrium of the

governor at, any speed. The Same patentee, in No, 120,217, describes a telescopic tractor drawbar. A safety tractor coupling is the subjett, of No. 110,331, by J. Scott. The actual connection between the hook of the drawbar is flexible and extensible.

A magneto improvement is the subject of No. -120.229, by the M.L. Magneto Syndidate, Ltd. This is a trip device ttli enable. the .armatureto be revolved all speed when the engine is only, turning over slowly, so as to provide a. good spark.

Another gas carburetter is protected in patent No. 120,270, by J. S. Hill.

No. 120,249, by F. B. Dehn, concerns dumping trucks as mounted on motor lorries.

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