What Is It Used for?

 
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Keepaeyeonit
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Post by Keepaeyeonit » Wed. Apr. 16, 2014 9:45 am

Hay all I have a old vacuum pump but I would like to know it's used for if someone knows.Thanks Keepaeyeonit
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Post by Sunny Boy » Wed. Apr. 16, 2014 1:14 pm

Are you sure it's vacuum, or could it be for pressure ? The ring looks like many of the old gas tank caps from the 1920's before the days of mechanical fuel pumps.

If it was for pressure, it may have been an old after-market emergency pump to push fuel through to the motor by pressurizing the gas tank - for gas tanks that have the vent only in the cap.

Other than that, . . I got nothing ! :(

Paul

 
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Post by coaledsweat » Wed. Apr. 16, 2014 6:37 pm

Maybe to pressurize a car radiator to check for leaks?

 
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Post by Freddy » Wed. Apr. 16, 2014 7:22 pm

It looks different than the one my Dad used to have, but, yes, he used his to pressurize radiators during repair. Once he got one of those fancy electric air compressors it never got used again.

 
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Post by davidmcbeth3 » Wed. Apr. 16, 2014 7:23 pm

A sexual toy?

 
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Keepaeyeonit
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Post by Keepaeyeonit » Wed. Apr. 16, 2014 7:38 pm

I will get some more pics tomorrow,Its has a check valve for vacuum(I think,but will look better tomorrow) and that radius part coming out of the top is to support a small hose.Thanks

 
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wilder11354
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Post by wilder11354 » Wed. Apr. 16, 2014 8:00 pm

Beer tap.


 
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Post by Carbon12 » Wed. Apr. 16, 2014 8:17 pm

Could it be part of an old rig to check specific gravity of antifreeze?

 
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Post by Lightning » Wed. Apr. 16, 2014 8:41 pm

davidmcbeth3 wrote:A sexual toy?
Hmmm.. :? :lol:

 
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Post by mozz » Wed. Apr. 16, 2014 8:46 pm

It's used to blow up balloons. :happy:

 
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Post by SWPaDon » Sat. Apr. 19, 2014 8:58 am

That device was designed by none other than 'Curious George'. It's used to fill bath tubs from water puddles when the hotel shuts off the water main. :D

 
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Keepaeyeonit
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Post by Keepaeyeonit » Sun. Apr. 27, 2014 7:26 pm

Ok I have some more pics. It's for pressure not vacuum and is set up for a small tube in the center.
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Thanks for all the replies.Keepaeyeonit :)

 
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Post by Sunny Boy » Mon. Apr. 28, 2014 10:53 am

I would say,...

Looking at the shape/construction it looks like it could be from 1920-30s.

The tapered barrel shape of the black part is probably for a one-size-fits-all jam-fit into a gas tank, or can opening.

The fact that it produces pressure not vacuum and that it has a hose going through the middle makes me think it's an early gas syphon.

Jammed into the opening of a gas tank, or can, by squeezing the rubber bulb it would pressurize the tank forcing gas to flow through the hose and start a syphon which is kept going by just lifting the gizmo out of the opening enough to break the jam-fit air seal.

The hose likely could be pulled through the gizmo so that it would reach to the bottom of whatever size the tank/can is without being too long and curling up out of the gasoline like some modern syphons do. The other end of the hose would go to whatever other container the gas was being syphoned into.

What looks like a curved finger hook on the brass cap part is actually a curved brace to prevent the hose from kinking.

I'll bet that in under that screw plug there's a spring loaded check valve.

Paul

 
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Post by ruger1980 » Mon. Apr. 28, 2014 11:48 am

I was going to say a gas siphon too.

 
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Post by wilsons woodstoves » Mon. Apr. 28, 2014 8:04 pm

If it is made from brass, then there would be less of a chance for a spark. seen a gas can for a boat from the 40s with a brass nozel.


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