664 ANNUAL REPORT SMITHSONIAN INSTITUTION, 1914. 
boy draws it down and holds it. The result of this is that the 
selected lingoes and leashes are drawn and held up. 
At No. 2 three sections of the simple are shown lettered B, C, and 
D. At B the cords are at rest. At C some cords have been selected 
and the fork inserted. At D the lever has been pulled over and the 
cords drawn over with it. 
Figure 47 shows the mechanical drawboy, a machine invented in 
the seventeenth century and improved during the eighteenth. It was 
attached to the pulley cords of the loom, on which, when the machine 
was used, the tie-up of the design was made, instead of on the simple. 
The active part 
of this machine is 
the pecker, which 
by means of two 
treadles and some 
little mechanical 
arrangements had 
two movements: 
(.) - ok timoc ked 
from side to side; 
(2) it moved, as it 
rocked, along the 
machine from one 
end to the other. 
Through holes 
in the side cross- 
pieces of the 
ii 
JaQ== 
(TL: 
= a = frame strong 
E is cords terminating 
jt |p Gp in heavy weights 
= 
ie ea | were hung. To 
() the tops of these 
cords the loops of 
each row of tie- 
ups were attached in regular succession. Only two rows are shown 
connected in the diagram to prevent confusion of lines. 
The pecker had a deep notch cut in its points and was of such a 
size that as it rocked the cord toward which it inclined caught in 
the notch. At the center of the cord a large bead was fixed. When 
the rocking pecker came in contact with this bead it pushed it and 
its cord down and held it until the second treadle moved the pecker 
in the opposite direction. 
As the pecker traveled along the shaft each cord was drawn down 
in its turn, thus opening the shed, line by line, for the working out 
of the pattern. 
Fic. 47.—The mechanical drawboy. 
