THE ROYAL ARTILLERY INSTITUTION. 
299 
TIME FUZE, 
PROPOSED BY 
LIEUT. W. MARTIN, R.A. 
In submitting a new fuze in addition to the already numerous 
patterns now in the service, 1 have the following objects in view:— 
{a) The use of but one pattern of fuze, which will burn 15 seconds, 
and as a time fuze answer the purposes of the present 5-second 
and 9-second time fuzes. 
( b ) Increased accuracy of shrapnel shell fire, owing to the greater 
nicety with which the proposed fuze can be set. 
(c) Increased simplicity of construction, and facility of manufacture. 
(d) Greater strength, and non-liability to premature explosion from 
the splitting of the powder channels. 
(e) Increased facility for testing its rate of burning and accuracy. 
Construction. 
Construc¬ 
tion. 
cone. 
The fuze consists of two parts—the cone, or body, and the spindle 
The cone, or body, is externally of exactly the same dimensions as the 
present time fuzes for M.L.R. ordnance. 
It may be constructed of beech wood, or as I should recommend in Material. 
India (where great difficulty exists in obtaining kinds of wood suitable 
for the manufacture of time fuzes) by the compression in dies by 
hydraulic power of fibrous substances—such as crushings of sugar-cane, 
cocoa-nut fibre, old rope, &c., &c. 
_ The interior consists of three concentric hollow cylinders, of different interior of 
dimensions and lengths. 
Their names and dimensions are as follows :— 
body. 
The upper or spindle-head recess— 
in. 
Length... *25 
Diameter . . *8 
The interior quick-match groove— 
in. 
Length... *25 
Diameter . *7 
(The object of this groove is to receive the quick-match and priming). 
39 
Spindle- 
head recess. 
Interior 
quick-match 
groove. 
