190 THE COMPLETE WILDFOWLER 
favour. The cost of manufacture of this gear cannot be stated. 
If a number were ordered together, the cost of each might be 
reduced, but as this is not likely to be so in the present case, 
the intending user must bear the cost of first production. 
Those who are amateur fitters and turners might arrange the 
work piecemeal ; the casting and machine-work they could not 
themselves do could be given out to some small engineering 
firm. On receipt of the parts they could fit and assemble them. 
OOS ES 5 YSHyHz 
LLL ase DLLME VLU TLL pal MLL wy MUU 
Re ZL lg LLL: Me ML lI 
WS WwW eww iw oe ‘SWAN Ss 
SCALE 
One inch 
Yd e2 
Gare 1 
pase oe 
Longitudinal Section 
Recoil Gear for Swivel-Gun mounted in the bow of rowing boat 
This work is rather out of the line of ordinary gunmaking, and 
as the ordinary profits on guns are too high to allow this class 
of work to be taken profitably in hand, gunmakers do not, as a 
rule, care about such jobs as these. By far the cheapest plan, 
in the long run, is to put the work into the hands of some 
small, yet reliable, engineering firm or machine-tool makers. 
Before going on to describe our gear, we may state that a 
similar one to that here shown has stood the test of seven 
seasons’ wear, and is now as good as when first made, answer- 
ing its purpose perfectly. The working is thus :—On recoil the 
forespring contracts. The pressure of the recoil is taken upon 
