US Patent: 49,142
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Pipe Coupling
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Patentee:
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James Old (exact or similar names) - Pittsburgh, PA |
Manufacturer: |
Not known to have been produced |
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Patent Dates:
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Granted: |
Aug. 01, 1865 |
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Stan Schulz
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Description: |
Artesian wells and wells bored to a great depth for procuring salt-water or oil are usually from four to six inches in diameter, and are sunk frequently four, five, or six hundred feet in the ground. Into these bores metallic pipes are sunk, which are put down in sections united together, each section having at one end a screw cut on the outside and at the other end on the inside. These tubes are generally made of copper or wrought iron. The former are very expensive and the latter are made very heavy, the iron being usually about a quarter of an inch in thickness in order to secure the necessary strength. The practical obstacle to the use of thin wrought-iron pipes is the difficulty of attaching the pieces together. A thin wrought iron pipe will not bear to have a screw cut upon it of sufficient depth to hold securely, and a fine screw, the threads of which are necessarily near together, when cut in wrought-iron, is very apt to strip, especially if the pieces to be screwed together are not exactly in the same axial line when the screw-threads begin to take hold of each other. It is therefore almost impossible to screw together the sections of thin wrought-iron tubing where the ends are to be screwed into each other, owing to the difficulty of getting the pieces in exactly the proper relative position necessary, where the screw is, fine, to start the screws without the threads crossing each other. The object of my invention is to overcome these obstacles and to enable thin wrought iron pipes to be used as tubing for wells, which I accomplish by the use of my improved coupling, instead of connecting the ends of the tubing immediately together. As the tubing for a deep well must be let down piece by piece, and the sections united when the tubing is in a vertical position in the bore of the well, it is necessary to provide some means of holding the tubing securely while it is being attached. This is done by means of a clamp passed around the pipe, and in order to give a secure hold and prevent the tubing slipping, which it is apt to do owing to its great weight when very long, I shrink or weld onto each of the sections of tubing near to its upper end a wrought-iron ring, which makes a projection from the side of the pipe to serve as a rest under which the clamp maybe placed, and thus hold up the tubing securely while another section of the tubing is screwed on or off.
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