559 
RESULTS OP EXPERIMENTS 
MADE IN THE 
ROYAL CARRIAGE DEPARTMENT, 
(in May and September, 1876), 
TO TEST THE RELATIVE STRENGTH OF DIFFERENT FORMS OF BRACKETS 
AND AXLETREES FOR FIELD GUN-CARRIAGES. 
COMMUNICATED BY 
MAJOR W. KEMMIS, R.A. 
I.—Brackets. 
The specimens of brackets experimented upon were, approximately^ 
of the same weight and dimensions; each consisted of two sides, of 
equal depth from end to end, 5' 0" long, connected by three collar 
bolts. 
To test each specimen, it was supported with the sides vertical, their 
upper and under edges horizontal, upon two cast-iron blocks, 4' 0" 
apart ; in which position a weight of 1134 lbs. was let fall, from a given 
height, upon a small wrought-iron block placed across the sides at the 
centre. 
The particular section and weight of each bracket, together with the 
effect of the blows it received, are given in the following table:—» 
