THE ROYAL ARTILLERY INSTITUTION. 
385 
NEW GARRISON CARRIAGES. 
BY 
MAJOR W. KEMMIS, K.A. 
10-in. M.L.R. Muzzle-Pivoting Carriage and Platform. 
Before proceeding to describe tlie carriage, it may be well to mention 
that the term “ muzzle-pivoting ” is applied to this carriage because a 
gun mounted upon it is capable, as it were, of pivoting in a vertical 
plane about a point at its muzzle. The object of this is to enable the 
gun to be fired at considerable elevation or depression through a port 
of small height, which otherwise the size of the latter would render 
impossible; and it is attained by supplying means in the carriage of 
altering the height of the trunnions. The advantage gained may 
readily be seen by reference to Fig. I., which shows the trunnions at 
Fig. I. 
two different levels, with the elevation or depression which can be 
obtained at each. In this figure it may be noticed that the chase, at 
maximum elevation, is some little distance clear of the edge of the port. 
This is to allow for its clearing the latter in recoil, as—due to the 
slope of the platform—it then rises. 
[vol. ix.] 44 
