called a Gypsey, for Spinning Hemp and Flax. 357 
from the frame in fig. 10). These wheels are bored with a round. 
hole, and are capable of turning freely upon the shaft ff, except 
as hereinafter described, but are prevented by proper collars 
from slipping in the direction of the length of the shaft. A 
second shaft h his made to run upon centres in the frame e e, 
parallel to ff. There are firmly fixed upon the shaft hh the 
wheels ii. The wheels g and 7 have fifty teeth each, the 
wheels g’ and i have seventy teeth each, and the diameters of all 
the wheels are in proportion to the number of their teeth. The 
teeth of g play into those of i, and the teeth of g’ play into those 
of”. There are two locking-pins or catches kk’, fixed upon the 
wheels gg’. JI are two clutch-boxes placed upon the shaft ff. 
These clutch-boxes are free to slide in the direction of the axis 
of the shaft ; but in the shaft are fixed pins, which project into a 
groove, cut lengthwise, on the inside of each clutch-box, so that 
the boxes cannot turn round upon the shaft. Several parallel 
grooves are turned in the body of each clutch-box. The catch- 
es or locking-pins mm’ are fixed upon the clutch-box /’, and the 
catch nis connected with the clutch-box J. by a movable joint 
which permits its outer end to fall back towards the middle of the 
clutch-box; it is prevented, however, from falling back, except 
on the application of a slight force by a steel spring, which is fix- 
ed at one end to the clutch-box, while the other end presses 
upon the catch n. ‘There is a stop screwed to the clutch-box to 
prevent the spring from forcing the catch n outwards beyond a 
certain distance. A slide-bar 00 is placed in the frame ee, paral- 
lel with the shafts ff and hh, and is capable of being moved in 
the direction of its length, and in that direction only. Two arms 
pp are screwed upon the top of this slide-bar, and pass from it 
towards the shaft ff, and terminate directly over the clutch- 
boxes //’, that is, one arm over each clutch-box. There are fixed 
85 
