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A cryogenic fluid distributor for turret machine tools (e.g., lathes) directs a stream of cryogenic fluid from an external, pressurized cryogen source to a working position of a machine tool to prevent overheating of the tool. Designed for easy retrofitting and synchronizing with multi-tool turret m

A cryogenic fluid distributor for turret machine tools (e.g., lathes) directs a stream of cryogenic fluid from an external, pressurized cryogen source to a working position of a machine tool to prevent overheating of the tool. Designed for easy retrofitting and synchronizing with multi-tool turret machines, the distributor allows for a "dual-fluid" machining capability combining a cryogenic fluid and a conventional cutting fluid (flowing via a conventional coolant system built into a given machine tool). Made of low thermal-mass, insulating polymer and metallic parts, the distributor utilizes the different thermal contraction coefficients of the parts to establish cryogenic sealing connections, which eliminates undesired turret plate cooling and assures rapid cryogen flow start-up.

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A cryogenic fluid distributor for turret machine tools (e.g., lathes) directs a stream of cryogenic fluid from an external, pressurized cryogen source to a working position of a machine tool to prevent overheating of the tool. Designed for easy retrofitting and synchronizing with multi-tool turret m

A cryogenic fluid distributor for turret machine tools (e.g., lathes) directs a stream of cryogenic fluid from an external, pressurized cryogen source to a working position of a machine tool to prevent overheating of the tool. Designed for easy retrofitting and synchronizing with multi-tool turret machines, the distributor allows for a "dual-fluid" machining capability combining a cryogenic fluid and a conventional cutting fluid (flowing via a conventional coolant system built into a given machine tool). Made of low thermal-mass, insulating polymer and metallic parts, the distributor utilizes the different thermal contraction coefficients of the parts to establish cryogenic sealing connections, which eliminates undesired turret plate cooling and assures rapid cryogen flow start-up. per chin receiving edge; and, a pair of handles mounted to and located above said arm receiving portions for gripping as the bicyclist leans forward with the head, forearms, and elbows resting respectively against said head support, said elbow supporting bars, and said arm receiving portions. 4. The handlebar of claim 3 wherein: said third pair of handlebars have opposite distal ends and extend outwardly of said arm receiving portions, said third pair of handles are straight between said distal ends for maximizing stability. 5. The handlebar of claim 4 wherein: said arm supporting bars each include a pair of forwardly extending curved portions located between said third pair of handlebars and said arm receiving portions for gripping. 6. A handlebar for a bicycle to support the head, forearms and elbows of a bicyclist comprising: a handlebar mounting stem mountable to a bicycle; a first pair of mutually opposed arm supporting bars mounted to said stem, said bars each including arm receiving portions which extend upwardly to receive the forearms of a bicyclist when in a forward leaning position; a second pair of primary elbow supporting bars mounted to said stem and located beneath said arm supporting bars to receive the elbows of the bicyclist; a third pair of handlebars located beneath said elbow-supporting bars and mounted to said stem for guiding when in an erect position; a head support located between said arm receiving portions; and, a pair of handles mounted to said stem and located above said arm receiving portions for gripping as the bicyclist leans forward with the head, forearms, and elbows resting respectively against said head support, said elbow supporting bars, and said arm receiving portions; and wherein: said third pair of handlebars extend outwardly of said arm receiving portions, said arm supporting bars each include a pair of forwardly extending curved portions located between said third pair of handlebars and said arm receiving portions for gripping, said head support is mounted to said arm-supporting bars and extends rearward toward the bicyclist, said head support has a padded upper chin receiving edge. 7. The handlebar of claim 6 wherein: said pair of forwardly extending curved portions each extend from said third pair of handle bars through an approximate 180 degree curve to said arm receiving portions, said arm receiving portions extend convergingly inwardly from said forwardly extending curved portions and then upwardly forming a pair of forearm supports. 8. The handlebar of claim 7 wherein: said second pair and said third pair extend horizontally whereas said handles are aligned to extend in the same direction as said forearm supports. 9. The handlebar of claim 8 wherein: said arm receiving portions have distal end portions joined together with said head support mounted to said distal end portions. 10. The handlebar of claim 9 wherein: said elbow supporting bars include enlarged distal ends to limit movement of the elbows. 11. The handlebar of claim 6 wherein: said arm supporting bars and said handlebars are of a single unit construction. 12. A handlebar construction for a bicycle comprising: a handlebar mounting stem mountable to a bicycle; a first pair of mutually opposed arm supporting bars mounted to said stem, said bars each including arm receiving portions which extend upwardly to receive the forearms of a bicyclist when in a forward leaning position; a head support located between said arm receiving portions, said head support extends rearward toward the bicyclist and has a padded upper chin receiving edge; a second pair of primary elbow supporting bars mounted to said stem and located beneath said arm-supporting bars to receive the elbows of the bicyclist; and, a pair of handles mounted to said stem and located above said arm receiving portions for gripping as the bicyclist leans forward with the head, forearms, and elbows resting re