摘要:
A dispenser for liquids having an insulated cool chamber to receive a liquid container with a flexible tube for flow of liquid, a heat exchanger or pump in the chamber to pump liquid along the tube, a shut-off valve in the chamber below the pump with an opening for the tube to pass to a dispensing point outside the chamber, a motor and shaft for driving the pump, and gears connected between the motor shaft and the pump, a revolution counter coupled to the motor shaft, and connected to a counter logic circuit to count each revolution of the motor shaft, and manual controls mounted on the chamber and connected to the shut-off valve and to the motor, and to the counter logic circuit so that the shut-off valve opens within the chamber and the motor is started thereby driving the pump within the chamber, and automatically stopping the motor shaft when the predetermined count is reached, thereby maximizing the accuracy of the volume of liquid pumped by the pump.
摘要:
A frame includes a plurality of screen bar segments. To form the screen bar, a flat malleable strip is provided. The strip is roll-formed to form a tube having a tensioning step on its face. The tensioning step extends along a length of the tube. The tensioning step has a mounting surface, which may be the bottom of the tensioning step. A hot-melt adhesive is applied to the mounting surface. The screen is spread across the frame, so that the screen extends over the mounting surface of each screen bar segment. The screen is secured to the face of the frame with an adhesive at a plurality of positions across a length of the mounting surface of at least one screen bar segment. The adhesive may be a hot melt adhesive. The screen is inserted with a plurality of pins to intermittently suspend the screen in the adhesive across the length of the screen bar segment. An apparatus for securing the screen to the screen bar segment includes a support surface that holds a screen bar segment. A heat source applies heat directly to the adhesive to melt the adhesive on the screen bar segment. The apparatus is capable of actuating the pins to cause the screen to contact the adhesive. The pins may embed the screen deeply enough to contact the mounting surface beneath the pins, while the screen is intermittently suspended in the adhesive between pins.