106 W. & L. E. GURLEY, TROY, NEW YORK 



center clock shaft. The capstan head screw (18) is used for 

 clamping the gear (19) to the clock shaft. Three nuts (22) 

 serve to hold the cover on the register. Clamp screw (23) is 

 to clamp the bushing in the base (1). 



In the standard register of this type the pencil travels along 

 the cylinder in seven days time (one inch for each day ) . hi- 

 possible, however, to substitute other screws (3) of such a lead 

 that the pencil will move across the cylinder in four days ( i\\ 

 inches for each day), or screws that will move the pencil across 

 the cylinder in one day (eight inches per day). Such an 

 arrangement would be very desirable in situations where there 

 are sudden fluctuations in stage. 



A float 10 inches in diameter and 5 1 /* inches thick, is used. 

 The whole instrument is enclosed in a sheet metal cover (14), 



KM,. l!i. 



No. ;:;:; 



