Machine for forming an enclosure of thermoplastic sheet material about an article

Claim 1

A SEMI-AUTOMATIC MACHINE FOR FORMING AN ENCLOSURE OF HEAT-SEALABLE SHEET MATERIAL ABOUT AN ARTICLE, SAID MACHINE COMPRISING: MEANS FOR SUPPORTING TWO SOURCES OF SUPPLY OF THERMOPLASTIC WEB MATERIAL AND FOR LEADING THE WEBS THEREFROM TO A JUNCTURE CONSTITUTING A BIPARTITE WEB EXTENDING IN A GENERALLY VERTICAL DIRECTION, AN INFEED PLATFORM IN BACK OF SAID BIPARTITE WEB FOR PLACEMENT OF AN ARTICLE ON SAID PLATFORM AND SUBSEQUENT MANUAL MOVEMENT OF SAID ARTICLE FORWARDLY OFF SAID INFEED PLATFORM, AN OUTFEED PLATFORM IN FRONT OF SAID INFEED PLATFORM AND SPACED FORWARDLY OFF THE INFEED PLATFORM, MEANS MOUNTING SAID FORWARDLY OFF THE INFEED PLATFORM, MEANS MOUNTING SAID OUTFEED PLATFORM FOR VERTICAL MOVEMENT, A LOWER JAW BENEATH THE SPACE BETWEEN SAID PLATFORMS, AN UPPER JAW AT A LEVEL ABOVE SAID PLATFORMS, MEANS MOUNTING ONE OF SAID JAWS FOR MOVEMENT TOWARD AND AWAY FROM THE OTHER JAW, MEANS INTERCONNECTING SAID OUTFEED PLATFORM AND SAID MOVABLE JAW SO THAT UPON VERTICAL MOVEMENT OF SAID OUTFEED PLATFORM SAID JAWS ARE BROUGHT INTO COOPERATIVE ENGAGEMENT, AND HEAT SEALING AND CUTOFF MEANS CARRIED BY SAID JAWS, WHEREBY WHEN AN ARTICLE IS MANUALLY MOVED FROM THE INFEED PLATFORM TO THE OUTFEED PLATFORM AND THE OUTFEED PLATFORM IS MOVED VERTICALLY THE WEBS WILL BE ADVANCED TO COVER THE ARTICLE AND THEN THE WEBS WILL BE SEALED TOGETHER IN BACK OF THE ARTICLE AND SEVERED TO LEAVE A FRESH BIPARTITE WEB IN FRONT OF THE INFEED PLATFORM.