Machine for Painters and Glaziers . 455 
consequent misery brought upon their families, stimulated 
Mr. Joseph Davis, of the Crescent, Kingsland Road, to 
endeavour at their improvement. The result was the ma- 
chine delineated in Plate IS, which may be made perfect- 
ly firm and secure, without occasioning any injury to the 
wainscoting or paint. In those cases however, where 
the bottoms of the windows are flush with the floor, as is 
usual in the best apartments of modern houses, neither the 
common machine, nor this with the improvement intended 
for general use, can be applied : but Mr Davis has con- 
trived an additional piece to be used on such occasions, 
which renders it equally secure. 
Fig. Plate IS, Represents the machine : the part a 
is similar to that used by glaziers, which is placed on the 
outside of the window. &, is an additional moving piece, 
which presses against the inside of the window frame, 
and is brought nearer to, or removed farther from it, by 
means of the male screw c, and its handle d. 
Fig. 8, Shows the lower part of a window, and the 
manner in which the moving piece 6, including a female 
screw, acts against the inside of the window frame. 
Fig. 9, Shows a cross bar introduced in place of the 
moving piece last mentioned, which bar extends from one 
window side to the other, and explains how the machine 
may be used, where any injury might arise from screwing: 
the moving piece in the centre of the recess of the window. 
The general improvement consists in the use of a screw 
on that end of the frame which is within the house, 
and which keeps the machine steady and firm, instead of 
the two upright irons, which are put through holes made 
in the top plank of the machine, in the coommon mode ? 
and which occasion the machine to be very unsteady in 
use, and liable to accident. There are two blocks mark- 
ed e, e , in Fig. 4, which may be occasionally put in, or 
taken out, according as the stone work under the window? 
may require. 
