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Patents Completed.

26th September 1907
Page 28
Page 28, 26th September 1907 — Patents Completed.
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Which of the following most accurately describes the problem?

LUBRICATOR.—Lacre Co. and Others. —No. 19,095, dated 27th August, 1908.—In order to control the quantity of lubricant conveyed to the varioes parts to be lubricated, the lubricant is contained in a casing (G). A pump (A), operated by the disc (I)), causes the oil to flow in the direction indicated by the arrows through the piston rod and disc (C). The quantity of lubricant delivered by the pump, is regulated by the adjustable part (C), the working face of which is shown in separate sketch. This part is controlled by rotating the tube (FI by means of the milled head (II) so as to cause the part (Cl) to move in or out of the path of the part (C) in the crank disc.

VEHICLE SPRINGS.—Cameron.—No.

,722, dated 15th October, 1908.—Castings (B) are secured to the vehicle frame (A), these forming guides for the cylin drical plungers (C). The castings form abutments for the spiral springs (E). These springs also abut on the projections carried from the cylindrical plunger (C), and to the upper ends of these cylindrical plungers the semi-elliptic spring (H) is at tached by means of links (D). The cylindrical plungers are each fitted with pistons (K), the pistons being connected to the guide members (B) by the piston rod (F), cross bar (G), and side rods (M). The piston is formed with a concentric passage (L) which is controlled by a valve (J). This valve is perforated so as to offer considerable resistance to a rapid downward movement of the plunger (C), but, on the other hand, an upward movement of the cylindrical plunger will be unrestrained, as the valve (J) will rise and admit of the fluid passing freely from the inside of the piston (K).

CONTROL OF PETROL-ELECTRIC VEHICLES.—Stevens.—No. 327, dated 5th January, 1907.—The controller consists of 13 metallic contact bars arranged in two concentric circuits. Those in connection with the dynamo circuits are numbered 1 to 8, and those in connection with the motor circuits 7 to 13. The contacts

(10, 13) have no electrical connections. A switch carrier (a) pivoted at v has insulated metal brushes (q, r, s, I). The hand lever is fixed to the fore-arm switch carrier, and is operated by a change-speed lever. b, b1.are two halves of the dynamo armature with their fields, e is the motor armature, f the series winding of the motor, h, hl are the multiple contact resistances in series with each half of the dynamo armature, and g, g1 the resistances connected to same. The reverse speed is

obtained when the switch carrier is in the position shown in Figure 1, the neut al position is shown in Figure 2, the first,

or slow, forward speed in Figure 3, and the fast forward speed in Figure 4. In electric vehicles, where the energy is supplied from a storage battery instead of a dynamo, the same connections would apply. The two resistance switches (h,

are linked by a non-conducting bar, so that they will put in the resistance and break the circuit simultaneously, but the same controller can be used for a dynamo with a single armature winding and single commutator, and a motor with two armature windings and two commutators; in this case only one resistance will be required.

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