SELF-ADJUSTING FIRING LANYARD FOR FIELD ARTILLERY. 
53 L 
Fuze-kef. Elevation. 
Scale £. Scale £. 
Fu^e-key. 
Scale 
Section. Plan. 
cd, whicli is fitted to take tho loop of the friction tube (a notch being 
cut in the cross-piece to hold the loop of the tube). The sliding bar a 
b is partly square in section and partly rounded, the rounded portion 
being so made to hold a spiral spring. The hole through which the 
bar slides in the guide T T is square, that in the guide S $ is circular. 
There is a stop rivet r, which prevents the bar a b from being pulled 
too far, and straining the steel spiral spring. The spiral spring should 
be sufficiently strong to make the sliding bar return to its former 
position when the pull of the lanyard is released. The rivet lc 3 which 
fixes the loop for the lanyard to the sliding bar, should be fitted so that 
it will only allow the sliding bar to spring sufficiently far back so that 
the cross-piece is in the proper position for fixing the loop of the tube. 
This method of adjustment, with an iron band round the gun, is 
clumsy, and the vent cannot be loosened or tightened while it is on; 
but this is only so fitted for the purpose of experiment (the surface of 
the gun is not injured in any w r ay by this band fastening). The pro¬ 
posed method of fixing the lanyard to the gun, if the principle of the 
thing is approved, is shown below. 
PROPOSED ATTACHMENT. 
Plan showing Guide Piece and Fixing Nuts. 
Scale |. 
! 
69 
