Other

Hydra Systems Mfg, Inc.

Fred L Herman

William M Roberts

Kenneth H Johns

A tube bending apparatus has an elongate frame with a longitudinal slot in an upper surface thereof and removal rollers laterally spaced at each side of the slot above the upper surface. A rolling carriage and reciprocating ram are disposed beneath the upper surface. A vertical post secured to the carriage has an upper end extending through the slot and a reversible bending die is removably mounted on the upper end of the post above the upper surface of the frame. The bending die is advanced and retracted relative to the lateral rollers by the ram such that a section of a tubular workpiece held against said lateral rollers can be engaged by the bending die and bent into a curved configuration. The lateral rollers and bending die above the upper surface and the reciprocating axis beneath the upper surface provide a substantially unobstructed area around the rollers and bending die through which at least one free end of the workpiece may pass when being bent whereby a plurality of adjacent bends lying in the same plane or different planes may be made without a previously bent section striking the rollers, bending die, or ram. The bending die has a peripheral opening to receive a previously bent section for making transition bends, and in combination with a backup tool receives the nut and sleeve of a flared fitting for making bends very close to a flared fitting. An indicator disk may be installed on one roller to indicate springback.

Tube bending appartus

A split spacer for flange fittings is disclosed which is in the form of a flat disc-shaped ring of predetermined thickness bisected along its diameter to form two separate identical semi-circular segments. In one embodiment on O-ring is installed in a groove on the circumference of the spacer which allows the spacer segments to be manually pulled part in opposed direction for installation on a coupling flange and when released, the segments assume a complete circular configuration. In another embodiment, the two segments are magnetized such that they are held the circular configuration by magnetic attraction. The segments are positioned in their engaged ring configuration on the bearing surface of a flange having one thickness such that the combined thickness will engage the bearing shoulder of a flange connector configured to normally connect flanges of a different thickness. The spacer is particularly useful in adapting a standard SAE approved hose coupling to fit a special, or non-standard, split flange of the type used on earthmoving machinery and the like.

Split spacer for flange fittings

There is disclosed apparatus for use in hydrostatically testing a length of pipe, wherein the pipe is closed at both ends, and a pin is provided for interchangeably connecting hoses leading from high volume, low pressure and low volume, high pressure pumps to one such end closure, whereby the pipe may be filled with water, the water pressurized, and then drained from the pipe following the test. A valve is mounted within the pin to which the pump hoses are connected so as to prevent the loss of water from the pipe, as the pressure hose replaces the fill hose, but nevertheless permit the water to be drained from the pipe through the end closure and hose connection with the pressure pump.

Pipe testing apparatus

Apparatus is disclosed for hydrostatically testing a length of pipe wherein the pipe is adapted to be closed by plugs at each end, one of the plugs having a port to which a hose leading from a pump may be connected in order to fill the pipe with water, and the other plug having a bleed valve through which air may be vented from the pipe as it is filled. Pump pressure is applied to the water in order to test the pipe, and water is then drained from the pipe to permit the pump hose to be disconnected from one plug for use in testing another length of pipe.

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Houston, TX, United States of America

Fred L Herman