Abridgments of Interesting Patent Specifications.
Page 16
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No. it,348: Dated May 17th, 19o4.—D. Roberts and C. James, Spittlegate Iron Works, Grantham, Lineaha—Device for regulating the stroke of the oil pump. a represents the motor, b the pump, c the pump ram, d the link pivoted at di to the upper end of the pump ram, and e the quadrant, to which the upper end of the link d is also attached, and the curve of which is described from the point di as centre when in the position shown. f is the governor, and g is a fork which engages with the sliding sleeve of the said governor, the said fork being mounted upon a rocking pivot (g1) having an arm (h1 connected, by means of a link to an arm (j) upon a rocking spindle (k), alsc having an arm (1) connected, by means of a link (m), to a point on the link (d) intermediate between the ram (c) and the quadrant ft). The quadrant tel is secured to an arm (n) pivoted at a to a fixed bracket (p), and in connection with the rod (q) actuating the air admission valve ; this rod at its lower end carries a roller (r) which bears upon the periphery of the air admission cam (s) upon the half-speed shaft. With this arrangement, when the engine is running, the operation of the governor moves the link (d) over the quadrant (e) as the speed of the engine varies, thus adjusting the movement of the pump ram (c) in accordance with such speed.
No. 4,438: Dated April 13th, igo4.— Fried. Krupp Aktiengesellschaft, of Essen, Germany.—This ignition plug differs from known ignition plugs, chiefly in the fact that an observation tube (D) is built into its casing (A), in addition to the ignition pin (B) and the ignition lever (C), and that the portion (bi) of the ignition pin (13) which forms the fixed part of the ignition contact is laterally bent over at right angles for such a distance that the formation of the spark takes place in the field of view of the observation tube (D). The casing (A) of the ignition plug is of the form shown in the drawing.The ignition pin (B) is held in the casing (A) by the conically-shaped insulating bodies (E), the collar (b2) and the nuts (bal, and is electrically connected to one pole of a source of electricity. The other pole thereof is electrically connected to the casing (A) and therewith also to the *mi. tion lever (C) mounted in the casing (A). The ignition lever (C) rocks in the casing (A) and carries at one erid an arm (c1), and at its other end there is a crank arm (t2i, to the pin te3) of which a pusher rod (F) of the interrupting gear is connected. Connected to the crank arm (e2) is one end of a spring (G), the other end of which is attached to the casing (A). The spring (G) tends to rock the ignition lever (C) in the direction of the arrow (x) (Fig. 2), and consequently presses the arm (el) of the ignition lever against the face of the bent over portion (bA) of the ignition pin (B). When the arm (el) bears against the ignition pin the circuit is closed. The observation tube is arranged parallel to the aids of the ignition lever, and for the purpose of protecting the eyes of the observer, there are provided two small transparent plates (di, ei2) composed of glass or the like. The spark which is to be observed by the aid of the tube {D) is produced in the well-known way by periodically interrupting the circuit at the point of contact (g, cl). To this end the rod (F) of the interrupting gear has a thrust im
parted to it in the direction of the arrow (y) (Fig. 2) at the instant of the intended ignition by means of a cam or the like mounted on the shaft of the motive power engine (but not shown in the drawing). This thrust swings the ignition levet out against the action of the spring (G) into the position shown. At this point the detached or intermittent spark passes across between the face of the fixed contact part (ki), and the end of the movable contact part (it) in front of the opening of the observation tube (D), and by means thereof, can conveniently be examined as to its intensity and duration, and also as to the moment of its formation. After the ignition has taken place the ignition lever (C) is swung hack again by the spring (G), and the circuit once more closed at the point of contact. The casing (A) together with the parts mounted therein is inserted in a suitably shaped opening (hi) in the cover (H) of the explosion chamber (J), which is mounted upon the back of the working cylinder (K), and is in direct communication with the compression space thereof.
No. 10,136; Dated May 3rd, I904--EV. Gratze, of Epping.—A simple form of contact breaker for explosion engines.— The walls and other main parts of the apparatus are constructed of ebonite or other hard and insulating material, and can be enclosed in, or affixed to an exterior circular metal case built up on the metal base (f) to take up the wear and tear. The metal balls (b) carry the current and act as the main contacts, the springs (-0 acting as the medium for taking the current to the balls 0). These springs (c) each fit into their individual metal terminals, and are all situated in the base or case (e), the current or energy being led to the terminals and springs by wires or the like, which fit into the terminal holes (a) and are then clamped with the terminal screw. A cover (g) is provided on the top of the apparatus. 'rile revolving portion (r) has fixed in it two contacts (e and d) connected together by the metal arm (n). The current is taken into the central terminal and passes through the spring into the central metal ball (b1); thence it is collected by the cup-shaped contact (d) and transmitted to the segment-shaped contact (e), which being fixed to the base or case (r) revolves with it, and transmits the current alternately to each of the balls (b) over which it rubs with such a pressure that the balls roll with it and form a good metallic connection.