With Intent to Improve.
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• A Weekly Summary of Recent Patents, of Interest to the Maker and User of Commercial Motor Vehicles,
Selected and Abridged by H. S. Hall, A.M.I.A.E.
The Albion Lubricator.
The name of the Albion Motor Car Co., Ltd., of South Street, Scotetoun, figures in in the Patent Office records this month, together with that of Mr. T. Blackwood Murray, D.Sc. The'occasion is an improvement, of that company's well-known mechanical feed lubricator, which was originally patented in 1905. The object of the present invention being to allow of a greater number of deliver/ ports being arranged within a given space. The construction of this pump is clearly shown on the sectional drawing, which is the upper of the two which, together, form one of the illustrations on this page. The whole of the mechanism is contained within a casing, the pump barrel, shown nearest the right-hand side, is in one piece with a gearwheel, and revolves round the central spindle, being driven by the small pinion on the left. The underside of the large gearwheel is machined to bed on the upper surface of a plate which is carried on a collar at the bottom of the above-named central spindle. This plate is prevented from.rerelying by studs which secure it to the base of the casing; it contains the suction and delivery ports of the pump. A i
delivery port s Shown immediately opposite to the end of the pump barrel; a delivery port also appears on the drawing, and is on the opposite side of the central spindle to the pump. Theunderside of the gearwheel which carries the pump is kept in close contact with the " port plate" by means of the spring shown. The upper end of the pump plunger carries a roller; this roller is pressed against the underside of a stationary cam, so that as the gearwheel which carries the pump revolves, the plunger is caused to rise and fall. The up stroke, effected by pressure. at the spring, is the suction stroke.
In the " port plate" there may be one or more suction ports, and a larger number of delivery ports; two or more of the latter to each of the former. The suction stroke of the primp is a continuous one, the delivery, owing to the form of the driving cam‘ being intermittent. A portion of the delivery stroke takes place each time the opening in the pump barrel arrives at a delivery port; in the interval between two consecutive ports the plunger is at rest.
It is in the provision of this intermittent delivery stroke that the novelty of this patent lies. The specification is numbered 107,322. The Albion luhr:cator has been a feature for some years of the Albion cars and motor vehicles, and has always proved a distinct success. An Improved Vacuum Fuel-feed Device.
J. M. Sanders, in specification 107,101, describes an improved vacuum fuel-feed device, and the avowed abject of his invention, of producing an apparatus of this class, which ehould have the merits of simplicity, fraedom from a multiplicity of small moving parts, and stur diness of construction, would seem, from a consideration of the drawings which we reproduce from the specification, to have been attained. The device is thereon shown in its two important conditions; top, with the engine suction taking effect on the inside of the float-chamber, and drawing fuel from the main tank to the apparatus; bottom, with the float in its top position, cutting off the engine suction, and allowing fuel to flow from the float-chamber to the reservoir..
Martin's Self-contained Motor Plough. _
Most of our readers are acquainted with that smallest example of the tracklaying tractor which made, its first public appearance at the "Royal " of 1915. Mr. W. E.. Martin the maker, discloses in specification-10.4097 a minor improvement in its construction, which he has patented. The aim of the invention is the prevention of wear of the teeth or the driving sprockets.
The weight of this machine is carried by rollers which run on the upper side . of the chain track. The track itself is, as a rule, guided and prevented from moving sideways by the teeth of the driving sprockets, with the result that the teeth of the latter wear rather rapidly. Mr. Martin remedies this trouble by making the weight-carry ing wheel serve also as a guide. The rim of the wheel .is made flat in crosssection, so that it bears on both links of the chain, and this same wheel is also provided with flanges, which are made to fit the sides of the links of the chain. Suitable clearances are provided.