Patent GB-269992-A (GB)
Title: Improvements in apparatus for delivering liquids in measured volumes
IPC: B67D7/16
Filed: 1926-02-01
Abstract: 269,992. Arnold, C., (Gilbert & Barker Manufacturing Co.). Feb. 1, 1926. Fixed-chamber apparatus with counting and other registering apparatus.-In apparatus for delivering liquids in which a discharge pipe is movable to various positions in a reservoir to discharge different measured quantities, means operable by the pipe when it is moved into any of its discharging positions prevent operation of the pump which fills the reservoir. The piston of the pump is connected to a cross-head 32 driven by bars 34 working in compressed air or similar cylinder, or the pump may be manually operated from a handle 46 on a shaft 44 which carries pinions 42 meshing with teeth on the bars 34. A discharge pipe 68 being raised to its uppermost position, liquid is delivered by a pipe 24 into a reservoir 26, excess liquid passing through an overflow pipe 80 with an adjustable top 82 until a certain quantity, say 5 gallons, remains in the reservoir. Flow down the pipe 68 is prevented by a spring-pressed valve 181 which engages the mouth of the ripe. The pipe 68 is slidably mounted in a well 90 having a gland 92, and as the pipe is lowered by means of a rod 96, to which it is connected by a bar 94, liquid passes into a chamber 64 fitted with an outlet pipe 66 until the level X-X is reached, siphoning being prevented by a pipe 190 which extends from the chamber 64 to the top of the reservoir 26. A handle 106 movable round a dial 108 drives a pinion 102 meshing with teeth 104 on the rod 96 to move the discharge, pipe, and the rod 96 works in sleeves 114, 116 screwed into a housing 112 surrounding the pinion 102, a gland being provided for the spindle 100 of the handle 106 to prevent escape of liquid. Stops 120 on the dial 108 set the handle, which is made in two parts hinged together to enable it to pass over all the stops but the last one. A detent may be provided at the " zero " position to lock the handle. A cam 160 on the spindle 100 engages a lever 176 pivoted to a clutch lever 168 to hold a clutch member 166 on the pumpoperating shaft 44 out of engagement with a second member 164 until the pipe 168 is in its uppermost position, when the lever falls on to a flat portion of the cam and enables the pump to be driven. The amount delivered is registered on a totalizer 140 by means of a lever 156 carrying a detent 158 which falls into notches corresponding with the stops 120 in a plate 160 on the spindle 100. On a clockwise movement of the handle, each notch passed causes ¢-gallon to be registered simultaneously with each gallon delivered, and on the return of the handle when the reservoir is emptied registers the ¢-gallon outstanding. A well 78 at the base of the reservoir is drained by a pipe 204 in the base of which is a valve 214 raised by means of a plunger 220. This plunger is always operated when a cover 224 is placed over the protruding end of the shaft 44 to lock the apparatus, a pin 226 on the cover engaging the end of the plunger. A vent pipe 198 is closed when excess liquid is delivered to the chamber 26 by means of a valve 192 carried by a float 194 working in a casing. The quantity delivered may be indicated by markers adjustably mounted on one of the tie-rods holding the cap and the base of the glass cylinder together, and the reservoir 26 may be made of opaque material with transparent inserts through which the level of the liquid can be observed.