| 摘要 |
A portable sanitary toilet which utilizes an elongated flexible plastic tube to collect waste material is provided with an operating mechanism for advancing and sealing the tube after each use. The operating mechanism includes a pair of rotatably mounted pincher arms which are resiliently biased toward each other to seal the tube therebetween until the tube is to be advanced. A pair of roller-equipped axles are rotatably mounted below the sealing portions of the pincher arms, and the axles are resiliently biased toward each other to form a tube-advancing nip between the engaging rollers. A foot crank is secured to one of the pincher arms to impart rotation to that pincher arm, and the other pincher arm is caused to rotate by a crank follower arm which engages the crank. A gear and ratchet connection between the crank and one of the axles causes the rollers to rotate when the pincher arms are separated to advance the tube and the collected waste material. Upon release of the foot crank, the pincher arms return to seal the tube.
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