Screw actuated dispenser

Claim 1

A DISPENSER SUITABLE FOR DISPENSING A SUBSTANCE IN VISCOUS OR SEMI-SOLID FORM, COMPRISING A TUBULAR CASE MEMBER FOR THE SUBSTANCE TO BE DISPENDED, A BOTTOM CLOSURE MEMBER COMPRISING AT LEAST ONE STEM EXTENDING ALONG THE INTERIOR OF THE CASE MEMBER, A FOLLOWER APERTURED FOR THE PASSAGE THERETHROUGH OF THE STEM AND NON-ROTATABLE RELATIVELY TO THE STEM AND DISPLACEABLE ALONG THE STEM BEHIND THE SUBSTANCE FOR PROPELLING THE LATTER FROM SAID CASE MEMBER, THE PERIPHERY OF THE FOLLOWER AND THE INTERNAL PERIPHERAL SURFACE OF THE CASE MEMBER HAVING COOPERATING HELICAL SCREW ENGAGEMENT AND SAID MEMBERS BEING RELATIVELY ROTATABLE TO EFFECT THE SAID DISPLACEMENT OF THE FOLLOWER, SEALING MEANS BETWEEN SAID RELATIVELY ROTATABLE MEMBERS AND SEALING THE BOTTOM OF SAID TUBULAR CASE MEMBER, A DEEP CAP MEMBER, SAID CAP MEMBER BEING SCREW-THREADED AT ITS OPEN END AND SAID BOTTOM CLOSURE HAVING A CO-OPERATING SCREW THREAD MEANS, THE CROWN OF SAID CAP MEMBER AND THE UPPER END OF SAID CASE MEMBER BEING ARRANGED TO CO-OPERATE IN SEALING RELATION AND FORM A LEAK-TIGHT CLOSURE BY SCREWING HOME THE CAP MEMBER, SAID BOTTOM CLOSURE MEMBER AND SAID CAP FORMING A CLOSURE ROUND THE SAID CASE TO THAT UNTIL THE SAID CAP HAS BEEN SCREWED BETWEEN SUCH MEMBERS WHICH WOULD DISPLACE TIVE ROTATION BETWEEN SUCH MEMBERS WHICH WOULD DISPLACE THE SUBSTANCE FROM THE CASE IS PRECLUDED.