245,064. St. Louis Pump & Equipment Co., (Assignees of Smith, H. D., and Smith, W. D.). Dec. 29, 1924, [Convention date]. Fixed-chamber apparatus, varying quantity measured in.-The apparatus comprises a container having a measuring weir therein through which the measured volume is discharged, such weir having an overflow edge movable in a substantially straight line. The glass container k is provided with an inlet pipe I leading from a pump 22 and with an overflow pipe o in communication with a pipe 24 leading back to the source of supply. A stop shaft 44 and a central shaft 46 geared together at their lower ends are supported in brackets 40, 42 clamped to the pipes 20, 24. The stop shaft carries vertically and angularly spaced stops, while the control shaft is provided with a shoe 74, a heel 78 on which co-operates with the stops. The shoe 74 is prevented from turning by being connected to a weir stop 82 and is moved up and down by a handle 86 extending outwardly through a slot in the casing. The handle embraces the shoe 74 and slides on the rod 46 but is not rotatable relatively thereto. The width of the slot allows the handle to rock either way through a small angle. Bolted to the floor casting 98 of the measuring container are castings 100, 102, a passage 106 through the casting 100 forming the connection between the pipes o and 24. A branch passage 108 communicates with a passage 110 in the casting 102. The discharge pipe D projecting upward into the container k is soldered to a plate 112 between the castings 102, 98. It also communicates with a passage 116 in the casting 102. Beneath the latter is fixed a casting 118 with a discharge passage 120 communicating with the passage 116 and with a discharge valve 122. A by-pass 126 in which is located a drain valve 128, permits communication between the measuring container and the discharge passage 116. The drain valve is normally closed by a spring 134. A passage 142 in the casting 104 connects the pipes I and 20. Passing vertically through the casting 102 is a slidable weir blade 82 fastened to the shoe 74 suitable stuffing boxes and packing pieces being provided to prevent leakage. The blade has five lateral holes which align with openings 152 when the blade is in the uppermost position. A ring- shaped casting 172 provided with handles 175 swings on a hub 178 for a limited distance. The hub is keyed to the shaft 180 of the discharge valve 122 and is connected to the casting 172 by a light load clutch C, Fig. 23. On the upper side of the casting 172 is a cam 202 comprising a slot 204, guides 206, and wedge-shaped cam surfaces 208 which engage the head 138 of the spindle of the drain valve. A pin 210 on the casting 172 co-operates with the ends of a notch 212 in a flange on the shaft 180 and serves to engage and disengage the clutch. This allows the drain valve to close before the discharge valve opens and vice versa. When the handles are in "night" position, a hole 214 in the casting 172 aligns with a bolt 216 which is then slid against a spring 222, and a padlock is passed through a hole 224 in the bolt. Normally, when the bolt is shot inwardly by its spring, a wide slot in the bolt aligns with the edge of the weir blade, allowing this to be moved vertically. A notch in the edge of the weir blade has to aline with the bolt in "night " position, to allow withdrawal. The discharge pipe D is of rectangular section and is open along one side. The opposite edges of the opening are provided with guides in which slides fluid tight the weir blade 82. A syphon breaker allows air to enter the discharge side of the discharge valve. A downwardly reflecting dome 260 is provided in which is provided a central light 264 while lights 266 illuminate the graduations on the container. A dome 268 for advertising purposes surmounts the whole.