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Fred A. Lennon and Cullen B. Crawford founded Crawford Fitting Company in Cleveland, Ohio, in July 1947 to manufacture the Swagelok tube fitting, which used a two-ferrule design to “swage” or form the tube and lock it into place. One year later, Lennon bought out Crawford and continued to grow the business.
Fred Lennon was born in Providence, Rhode Island, to Patrick and Catherine Lennon, as the youngest of their nine children. [2] By the age of 42, he was living with his wife in an apartment in Cleveland, Ohio, when he borrowed US $500 from his wife's uncle to buy The Crawford Fitting Company later to be renamed Swagelok Company.
During the roll bending process the pipe, extrusion, or solid is passed through a series of rollers (typically three) that apply pressure to the pipe gradually changing the bend radius in the pipe. The pyramid style roll benders have one moving roll, usually the top roll. Double pinch type roll benders have two adjustable rolls, usually the ...
In a Swagelok tube connector, tightening the connector's nut with a wrench swages part of the connector permanently to the tubing. Once swaged on, the connection can be unmated and remated. Pipe flaring machines are another example. Flared pieces of pipe are sometimes known as "swage nipples", "pipe swages", or "reducing nipples".
A roll bender is a mechanical jig having three rollers used to bend a metal bar into a circular arc. The rollers freely rotate about three parallel axes, which are arranged with uniform horizontal spacing.
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