Security against House -breakers . 185 
peared to possess some advantages over tlie common 
wheels and to have a greater power of action. 
Description of the late Mr. Besanfs Water -wheel, Plate 
5, Fig. 1 and 2. 
A. The body of the water-wheel, which is hollow in 
the form of a drum, and is so constructed as to be proof 
against the admission of water within it. 
Ih The axis on which it turns. 
C. The tioat boards, placed on the periphery of the 
wheel. Each board is obliquely fixed firm to the rim of 
it, and to the body of the drum. 
I). The reservoir, containing the water. 
E. The penstock, which regulates the quantity of wa- 
ter running to the wheel. 
F. The current of water which has passed the wheel. 
Fig. 2. Is a front view of the water-wheel, showing 
the oblique direction in which the float boards C are 
placed on the face of the wheel. 
No. 
69. 
Account of an Invention to secure the Pannels of Doors 
and Windoiv Shutters from being cut out by House- 
breakers. By Mr. Joseph Davis.* 
'■ .t'" 
(With an engraving.) | t , . 
SIR — I have for some time considered, {hat it would 
be of great benefit to the public, if a plan could be adopt- 
* Nicholson, vol. 21, p. 177. From the Transactions of the Society of 
vol. 25, p. 101,— Ten guineas were voted to Mr. Davis for this invention, 
VOL, I. Z 
