As is seen more clearly in Fig. 2, the water under pressure enters by
the pipe, _c_, to which is attached a small tube of India rubber, and
leaves by the pipe, _c'_, and is carried away by another India rubber
tube.
The openings of the distribution cock are symmetrically pierced in the
seat and plug, which latter is divided internally by a horizontal
diaphragm so arranged that at each oscillation communication is
established alternately above and below the piston. So that it can be
started or stopped quickly, the opening and closing of the throttle
valve, _i_ (Fig. 2), is effected by a single pulling movement upon the
handle, I, and this draws out the valve horizontally. For this end the
lever is pivoted upon the extremity of the valve stem, and ends in a
bar engaging with a fork which acts as its fulcrum. This fork is cast
in one piece with the plug, J, which closes the opening through which
the valve is put in place, as shown in detail in Fig. 8. To prevent
the lever from spinning out of the fork when it is pulled or pushed,
this lever is prevented from turning by the valve stem, provided for
this purpose with a double rib, _i'_ (Figs.
Pages:
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25