11

Illuminating Apparatus, Etc.—Continued.
97. Service table, Wooden table in workroom
98. Tube leading through center of upper metal ring of lens into ventilator ball, to cary off gases of combustion and to assist in producing proper draft in lantern—Of what material, diameter, and how fitted and connected with damper tube when in place:
Copper tube 5” in diameter with planished iron connecting tube through brown piece fitted with base arm connecting tube 10” diameter as top 5 ¼” diameter as bottom damper tube 3 7/8” diameter carried on huge riveted to is and supported by ring at base of connecting tube
99. If revolving, revolving machinery: _____________________________________________
100. Revolving on chariot, mercury float, or balls: ___________________________________
101. If a chariot, describe it and state the number and size of each pattern of wheels in it: _________________________________________________________________________
102. If on balls, describe the construction of the ball-raceways, whether flat surface, or semicircular or V grooves: ___________________________________________________
103. State number of balls: (None); diameter of balls, ________________________________
104. Revolving cord or chain—How led: ___________________________________________
105. Length of drop tube, _______________________________________________________
106. Length of time revolving machinery will run after one winding: