At a car boot sale recently I came across a box of French medical items which included this brass item that I'm told had something to do with enemas. The thinner brass pipe screws onto the pump part, the end of it is smooth and almost pointed with a hole in the end, offset to the side rather than firing forward. Use your imagination as to where the end of the pipe has been during its working life. The thinner pipe has a small plate with 'AUTOMATIC BTE SGDG' on it. The pump has a handle that pulls the plunger to suck or push it to blow.There is a leather washer inside the pump which makes a seal to prevent air loss and therefore giving stronger suction or blowing. Close your eyes and try to imagine what it feels like...hold onto that thought.
Actually for all the use it is I might as well just stick it up my...ask me later and i'll tell you.
'BTE SGDG means - "breveté sans garantie du gouvernement" - Patented Without Guarentee of the Government". Apparently it's a French distinction that designates a technical patent in the U.S. sense, as opposed to trademark and the old design Patent number system that dealt only with name and shape, which are aparently designated by the French government as "déposé". So now you know.