RECOIL GEARING FOR PUNT-GUNS 191 
the trunnions, which force the holding bracket with a down- 
ward thrust on to the bed-plate of the gear, owing to the work- 
ing axis lying above and in front of the bearing surface of the 
bracket. The rebound of the recoil spring is checked by the 
after-spring or ‘‘ back check.” 
The material recommended is wrought or forged steel for 
all parts. The bracket may be a steel casting, and the bed- 
plate and pivot socket of brass, if thought better. Reference 
One foot. \ 
[C WS ZN 
ENS z 
Cross section through gun-beam of large punt, showing Elevator and Screw. 
Rope Recoil Gear for Punt-Gun 
Longitudinal section, fore end of punt, showing Rope Recoil Gear for Punt-Gun 
to our sketches should suffice for almost anyone to grasp the 
idea of construction. Those versed in engineering practice 
may more readily see what is required. Our design is one 
of a2in. gun. The forespring is 3 in. square steel, the back- 
spring of } in. The trunnions, ring holding same to the 
gun, and all other working parts except the bed-plate and 
bottom of the bracket, to be skin-hardened. The top or 
face of bed-plate and the bottom of the bracket should be 
planed. The clips holding the springs in position on the 
gun-barrel are turned inside with shallow ‘‘spigots,” so as 
to fit corresponding sockets in the gun-barrel and hold better. 
