Webb Jay Stewart Vacuum Tank Gauge

[hddennis]

I've decided to offer this extremely rare Webb Jay Stewart Vacuum Tank Gauge here first. It is shelf worn and will require cosmetic restoration as shown in the pictures. Vacuum on the gauge causes needle movement so I'm pretty sure it functions as it should. Period literature shows it monitors vacuum tank function and also is used to calculate gas mileage. I've been into antique cars for over 50 years and this is the only one I've ever seen. Having driven a few vacuum tank equipped vehicles I would think this would be great to forewarn one of trouble in the system before it stopped completely. $200.00 plus shipping.

Howard Dennis

Edited April 23, 2014 by hddennis (see edit history)

[hddennis]

BTT

[hddennis]

Just read an interesting bit of history on the HCCA library site related to this gauge. Apparently Webb Jay the famous race car driver of "Whistling Billy" the White steamer brought out the vacuum tank system in 1913 and Stewart Warner bought it in 1914.

Howard Dennis

Webb Jay Gravity Feed-The Webb

Jay

Motor Devices Co.,. Chicago, Ill.,

has brought out a system which 'changes

pressure to gravity gasoline feed. This

system does away with hand and power

pumps and leaves the gasoline tank in

the rear. The device is a brass can, Fig.

8,

10 inches high and 5 inches in diame'ter,

fitted with three copper pipe connections,

one coming from the gasoline tank,

or the line, another running to the intake

manifold and a third to the carbureter.

When the engine is opera.ting the suction

of the pistons creates a partial vacuum

in the container, because the piston suction

acts through the pipe leading from

the intake manifold to the container. In

order to prevent the piston suction affecting

the carbureter there is inserted in

the container a flap valve. It is evident

that as soon as suction takes place this

valve will close, forming two compart-i

ments in the container. The float and

its mechanism shown is the same in principle

as the float of tlje carbureter. As the

level of gasoline rises in the container the'

float rises and when the container is full

the needle valve will shut off the pipe

from the intake manifold, thus stopping

the suction. The flap valve will now

open due to the weight of gasoline above

it and this gasoline will drop to the

lowe~

chamber. and thence to the carbureter.

Any water or dirt in the fuel will drop to

the bottom of the chamber and may be

drained-periodically.

[hddennis]

Still have this RARE gauge. Open to reasonable offers.

Howard Dennis

[apacap]

Hi Howard, I am interested in your gauge, can I call you or if you prefer to call me I am at 217 778 1`425, Thanks, Allen

[hddennis]

SOLD! SOLD! SOLD! Thanks for your interest.

Howard Dennis