Gas-Engines and Producer-Gas Plants / A Practice Treatise Setting Forth the Principles of Gas-Engines and Producer Design, the Selection and Installation of an Engine, Conditions of Perfect Operation, Producer-Gas Engines and Their Possibilities, the Care of Gas-Engines and Producer-Gas Plants, with a Chapter on Volatile Hydrocarbon and Oil Engines

by Rodolphe Edgard Mathot

Fig. 16.—Contacts of a magneto-igniter.

Fig. 17.—Device for regulating the moment of ignition.

In order to explain more clearly modern methods of ignition a diagram is presented, showing an electric magneto-igniter applied to the cylinder-head of a Winterthur motor, and also a sectional view of the member varying the make-and-break contacts which

are mounted in the explosion-chamber (Figs. 18 and 19)

1. The magneto A consists of horseshoe-magnets, between the poles of which the armature rotates. At its conically turned end, the armature-shaft carries an arm B, held in place by a nut.

Fig. 18.—Winterthur electric ignition system.

2. The igniter C is a casting secured to the cylinder-head by a movable strap and provided with two axes D and M, of which the one, D, made of bronze, is movable, and is fitted with a small interior contact-hammer, a percussion-lever, and an exterior recoil-spring; the other, M, is fixed, insulated, and arranged