76 
MINUTES OF PROCEEDINGS OF 
(I) Pettman Land Service Percussion Fuze 1 2 (Figs. 1, 2), consists of 
seven principal parts, viz.:— 
The Body, 
Top Plug, 
Bottom Plug, 
Steady Plug. 
Lead Cup, 
Cone Plug, 
Detonating Ball, 
PETTMAN’S LAND SERVICE PERCUSSION FUZE. 
Fig. 1. 
Fig. 2. 
The Body (Fig. 1, aaa), is made of gun-metal. 3 It is two inches in 
extreme length; and is conical 3 in form and screwed to fit the fuze holes of 
common spherical shells. 4 Above the screwed part is a plain projecting 
shoulder upon which the fuze rests when screwed home; and upon the top of 
this shoulder are four wrench holes, equidistant from one another, by means 
of which the fuze is screwed into or removed from the shell. 
The body is hollow from end to end, being tapped 5 at top and bottom to 
receive the top and bottom plugs. 
The interior is otherwise plain and cylindrical; with the exception of a 
slight rounding inwards immediately above the bottom plug. 
The Top Plug (Fig. 1, b), is a cylinder of the same alloy as the body, 
screwed to fit the upper end of the fuze ; 6 on its upper side is a square key 
hole by which it is screwed into the body, or removed for the purpose of 
inspection or repair. 7 This plug closes the top of the fuze. 
The Bottom Blug (Fig. 1, c) is a cylinder of the same alloy as the body, 
screwed to fit the lower end of the fuze. 8 On its upper side it has a small 
1 Adopted 30th October, 1861, W. O. C., 739, par. 414. 
2 Copper 11 lb., tin 1 lb,, zinc 1| oz. 
3 The common fuze hole taper, one inch in 9‘375 inches. The extreme lower end of the fuze is 
slightly though almost imperceptibly rounded. 
4 The thread is right-handed and 14 to the inch. 
5 Right-handed, 20 threads to the inch. 
6 See preceding note. 
7 It is an advantage of these fuzes that they admit of ready inspection and repair of the interior 
arrangement when required. 8 See note 5. 
