BOWSER ELECTRICALLY OPERATED METER PUMPS The following text is taken from the original pump manual: |
| Bowser electrically operated meter
pumps are available in several models, but they are all
built around the same well tried Bowser units, giving
maximum interchangeability. The principal of operation is the same for all models. Fuel is drawn into the belt driven pump unit through a strainer which removes any sediment which may be carried from the storage tank, and it is then pumped into the air release unit. |
|
|
Air released from the fuel passes
through the vent pipe and vent screen to the atmosphere
and air free fuel is pumped through a check valve into
the Xacto meter where it is measured by true, positive
displacement, and the amount recorded on the discharge
register, the mechanism of which is driven from the meter
shaft through a reduction gear. Fuel from the meter passes through the swivel assembly and radial arm, where fitted, and through to the sight glass (incorporating a sensitive spinner to indicate fuel flow), hose assembly, swivel joint and nozzle. The nozzle valves and the check valve between the air release and meter, are designed to ensure that the hose always remains full of fuel. A bleed valve in the check and relief valve takes care of fuel expansion in hot weather. |
| An
interlocking mechanism is connected between the resetting
shaft and the hose lever on/off switch. This fitment
prevents the motor being switched on before the discharge
register has been reset to zero and it also prevents the
discharge register being reset to zero whilst the motor
is running. A preset mechanism is available as an optional extra which can deliver quantities up to 22 gallons by gallons. Earlier models up to December 1957 were fitted with a 20 gallon preset measuring in single gallons, and from January 1958 to December 1959, an 11 gallon preset, setting in half gallons, was provided. Another optional extra is a limiting device which is fitted between the meter and the head and switches the pump motor off when 10 gallons have been discharged after the device has been reset. |
|
|
|
