Abridgments of Interesting Patent Specifications.

Progress, Volume I, Issue 7, 1 May 1906, Page 164

Abridgments of Interesting Patent Specifications.

Atomiser. — Haselwander. — No. 16,800, dated August 18th, 1905. — In two-stroke-cycle engines it is usual to use a baffle (/) on the piston (ft), Fig. 1. In^this invention this baffle can be utilised to cooperate with a part (t) at the compression end

of the cylinder, so that, as the piston arrives at the end of its stroke, it super-compresses a charge in the chamber (to). This super - compressed charge escapes by the passage (n), where it meets the fuel, which it atomises as it is discharged from the outlet (d). The same invention can be applied

Induction Valve. — The Wolseley Tool and Motor Car Co., Ltd. — No. 6,800. dated August 31st, 1905. — The valve (c) is held upon its seating by toggles (a) pivoted to a fixed collar (c). The toggles^are pivoted to the top of the valve stem

to four-stroke-cycle engines, as shown in Fig. 2, where a web (/) is secured to the piston and cooperates with a fixed part at the combustion end of the cylinder to form a separate chamber (m), in which super-compression takes place at the end of the stroke. In this figure fuel is shown as admitted by the conduit (p).

Two-cycle Engine. — Jung. — No. 2,171, dated February 3rd, 1905. — This engine is provided with an auxiliary cylinder (d), which slides upon an extension (b) from the main cylinder, and is operated by eccentrics upon the crank shaft.^As the piston (f) in the mam cylinder commences

its working stroke, the cylinder (d) is raised so that a vacuum is formed therein. When the piston (/) passes the ports {c) in its cylinder, the exhaust gases Jescape through these to the cylinder (d),

and at the same time a fresh charge is admitted by the inlet (q). The new charge is then compressed, and exhaust from the cylinder (q) takes place through the valve (k), which is gravity-controlled to open when the pressure rises beyond a given limit.

and controlled by a spring (d). The advantage of this valve is that it requires a greater degree of suction to first open it than it does to maintain it open, whereas the reverse is the case with ordinary suction valves, so that these latter are often uncertain in action owing to their " fluttering."

Ignition Device. — Olive. — No. 17,694, dated September Ist, 1905. — The spring {r) operating upon the piston (b) maintains one of the ignition points (c) m contact with the corresponding point (i). The tension of the spring (r) is so adjusted

that when the required degree of compression is obtained v/ithm the cylinder the piston (b) is forced back thereby, and thus the circuit (c i) is broken so that a spark occurs. By regulating the pressure exerted by the spring (y), adjustable by the hand wheel (m), the moment of ignition can be controlled.

Vaporiser and Separator. — Thornycroft, Ltd. — No. 28,977, dated December 30th, 1904. — The annular chamber (10) is heated by the exhaust gases passing through the conduit (7 and 8). Air is admitted by the valve (16) to the chamber (io),

and carries with it fuel from the nozzles (15 and 17). In the chamber it is heated, and then passes through a passage (/) to a spiral passage (d) in a truncated

cone-shaped member (a). In the spiral passage (d) the heavier parts of the fuel are discharged by centrifugal action, whilst the lighter and properly carbnretted portion passes on by the ouilet (n) and conduit (u) to the cylinder of the engine. Additional air may be admitted by the valve (s).