Patent GB-263653-A (GB)
Title: Improvements in apparatus for aerating liquids
IPC: B67D1/02
Filed: 1926-02-17
Abstract: 263,653. Sodastream, Ltd., and Hucks, W. Feb. 17, 1926. Crank-actuated pumps; single-acting bucket pumps-Apparatus for aerating and dispensing liquids comprises a receptacle 1 and extension 3 in which is mounted a sliding body consisting of a plunger 5, tube 7 and a discharge chamber 9 having a spout 11 engaging a slot 12 in the extension 3. Brackets 21 on the chamber 9 support a shaft 20 carrying an eccentric 19 to which is secured a handle 15. On either side of the eccentric are mounted eccentric straps having arms 18 pivoted to a slipper 17, mounted within the chamber 9, forming an abutment for a spring 16 carrying at its lower end a valve 14 adapted to close the outlet 13 of the tube 7. The plunger 5 is provided with a valve 6 of the cup leather type opening downwards. The valve may be provided with holes 6<a>. On movement of the handle 15 in the direction of the arrow the arms 18 are urged downwardly so as to move the valve 14 towards its seat until an abutment 24 on the eccentric straps engages a fixed abutment 25. On further movement of the handle the eccentric 19 turns in the straps so as to raise the shaft 20 and with it the brackets 21, chamber 9, tube 7 and plunger 6. Closure of the valve 14 is arranged to take place shortly after the plunger has commenced its upward travel. When the plunger has reached the end of its upward travel as limited by a constriction 27 the operator opens the valve of a gas container so as to allow gas to enter the stage below the plunger through a finely perforated tube not shown. On further movement of the handle it engages a rocking post 26, on which as a fulcrum it thereafter bears so as to raise the plunger and associated parts. On reversal of the handle the eccentric strap is moved upwardly so as to release the spring 16 to permit escape of unabsorbed gas. Further motion causes the valve to open. The aerated liquid is expelled by direct downward pressure excited through the handle 15 on the plunger and associated parts. The valve 14 acts as a safety valve when required. Return movement of the handle 15 beyond the starting position is prevented by a stop 61 or by a lug 64 on the Eccentric 19 engaging a stop 65 on the eccentric straps 18. The receptacle 1 communicates by a channel 47 with the bottom of a reservoir 35 in which it is mounted. The reservoir 35 is provided with an ice-tank 36, the bottom of which is formed with deep corrugations 55. The reservoir 1 is provided with a drainage orifice 48 normally closed by a plug at the end of a spring- pressed tube 50 operated by a knob 51. The tube 50 is provided with overflow holes 54. The ice-tank 36 is provided with an overflow tube 56. The apparatus is provided with a counting device 31 carried by a bracket 41, the crank operating arm 32 of which is actuated by a cam-shaped slot 33 in a plate 34 carried bv the spout 11. The spout and counter are covered by a guard 42 provided with an observation slot 43. Liquid may be fed to the reservoir 35 from inverted bottles so as to maintain a constant level. In a modification the reservoir 35 is dispensed with, means being provided for filling the upper part of the receptacle 1 by hand. Specification 229,733 and 242,044 are referred to.