Portable waterless water closet

Claim 1

In a waterless water closet of the type having a cabinet topped by a seat with a waste-receiving opening therein, a magazine located underneath the seat containing an annular compartment encircling the opening is the latter communicating the interior of the cabinet, and a length of foldable thin-walled tubing stored in the annular compartment, the improved bagpulling mechanism which comprises: a pair of shoe-carrying elements journalled for rotation inside the cabinet beneath the waste-receiving opening in side-by-side parallel relation about horizontal axes, each of said shoe-carrying elements having a primary shoe and a secondary shoe projecting radially in opposite directions from the axes thereof while cooperating to define gaps of substantial angular extent therebetween, the primary shoes having cylindrically curved outer surfaces extending substantially the full length of the shoe-carrying elements adapted upon counterrotational movement of the latter to close against opposed faces of the tubing when passed therebetween and pull an unused section thereof from the magazine with a wringerlike roller action, the secondary shoes being located and adapted to cooperate with one another to engage and form a seal around the tubing upon further counterrotational movement of the shoe-carrying elements into a second position, and said pairs of primary and secondary shoes cooperating with one another and with one of the pairs of gaps located therebetween upon counterrotational movement of the shoe-carrying elements into a third position so as to open the tubing and permit waste products to gravitate therethrough; a pair of gate-forming jaws located beneath the shoe-carrying elements in parallel relation on opposite sides of the tubing for movement between an open inoperative position and a closed operative position gripping opposed faces of the tubing therebetween to define a seal; spring means connected between the gate-forming jaws operative to normally bias same into closed position; cam means connected to at least one of the shoe-carrying elements for rotational movement therewith; cam follower means connected between at least one of the gate-forming jaws and the cam means operative to cooperate with the latter to move said jaws into open position and maintain such position throughout the counterrotational movement of the shoe-carrying elements until the second position thereof is reached, and said elements cooperating in said second position to release said jaws into closed position along with the secondary shoes; power transfer means operatively interconnecting the shoe-carrying elements for synchronous counterrotational movement; and, drive means connected to one of the shoe-carrying elements operative upon actuation to cooperate with the power transfer means and counterrotate said shoe-carrying elements through one complete revolution in a direction to pull tubing from the magazine.