GUNS, WEAPONS, &c.

West End Gallery and South-West Gallery.

345

Kingdom.'

■^■oO Harris, Sir William Snow, Plymouth —Inventor.

Practical models, illustrative of the system of con-ductors employed to protect Her Majesty’s ships from

Fig. 1.

the keel, at the sides; and at stem and stern. 5. Pre-paration of the step of the mast, with part of the keelson.This method of preserving ships against the effects oflightning has proved efficacious; and it requires nocare or interference on the part of the officers or crew.Since the full employment of this system in the Navy, nodamage from lightning has been recorded.

1 '-

riff. 4

Harris’s Lightning Conductors.

feting ' ® en eral plan and construction of the con-L Line of S> ,° w j n g the alternate jointing of the plates.st< -*p. 3. rp? on duction on the masts from the vane to the

tlera l plan of e tL°'i5 Uctor . as a PPlied to a topmast. 4. Ge-c °ttununi ca t; n . Lull, with connecting branches and boltsS in various points with the sea, viz., by

Sir W. S. Harris’s Lightning Conductors.

Fig. 1 shows the line of conduction on the masts from

the vane spindle to the step.

Fig. 2 represents the moveable tumbler at the junctionwith the caps, in which A D is a copper plate fixed on thecap, NM an angular plate set on the hinge CD, P theconductor on the mast. This hinge is sometimes coveredwith a small saddle of wood, to prevent its being damaged.