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



until I In- foot mark on the middle type wheel (6), corresponding 

 t<> the foot mark on the hook gage, is opposite the center of tin- 

 kimmrr. Continue to revolve the sprocket wheel (8) until the 

 hundredth mark on the type wheel (7), corresponding to the 

 hook gage reading, is correctly in line with the center of the foot 

 figure which is always the index. 



Attach the perforated band (47) to the clamp (48) on top 

 <>f the float and let the float down into the well through the trap 

 door in the floor of the shelter, allowing the perforated band to 

 unwind, like thread from a spool, and being careful that it does 

 not kink. Pass the end of the band upward through the slot 

 in the floor and the proper hole in the table and through slot 

 (49) in the base of the register. Bring the band over tin 

 sprocket wheel, but do not let the metal band come in contact 

 with the previously adjusted sprocket wheel, and pass it down 

 through the slot (50) in the base of the machine. Through one 

 I the holes in the band put an adjusting pin, so that it will rest 

 across the slot (50) and prevent the metal band pulling over 

 the sprocket wheel. Allow sufficient length of tape below the 

 floor so that the float may freely drop the full depth of the well. 

 Then attach the counterweight (51) to the metal band. Take 

 the pin out of the bronze band, and having the band taut on the 

 float side, lower the counterweight slowly, and carefully fit the 

 perforated band over the spines on the sprocket wheel. Com- 

 pare the figures on the type wheels (6 and 7) with the exact 

 stage of the water in the well and if they disagree with the 

 water stage reading, having moved a small amount when the 

 perforations of the band were fitted to the spines, this small 

 variation may be corrected and the figures brought to the cor- 

 rect reading by opening clamp (48), thus changing the length 

 of the perforated band. After making this adjustment, tighten 

 the two clamp screws. Before raising the float to make this 

 correction, put an adjusting pin through the tape across the slot 

 in the base on the counterweight side, so that the weight will 

 not drop suddenly. Rapid revolution of the sprocket may 

 damage the mechanism that changes from one foot mark to 

 another on the type wheel, because this mechanism is so con- 

 structed that it works extremely fast under normal operating 

 conditions. Once the metal band is adjusted it will hold its 

 adjustment indefinitely. 



