Staple applying pneumatic machines, more particularly for sealing bagshaped packages

Claim 1

A MACHINE FOR APPLYING STAPLES, MORE PARTICULARLY FOR SEALING BAG-SHAPED PACKAGES, COMPRISING ESSENTIALLY: A FRAMEWORK HAVING A GUIDEWAY ENDING IN AN ANVIL-FORMING PIECE AND FORMED WITH AN OPENING THROUGH WHICH THE STAPLES TO BE APPLIED ARE INSERTED; A CARRIAGE SLIDINGLY MOUNTED IN SAID GUIDEWAY, BETWEEN A FIRST POSITION WHEREIN IT FACES SAID OPENING AND A SECOND POSITION WHEREIN IT IS ADJACENT SAID ANVIL, SAID CARRIAGE BEING FORMED WITH AN ELONGATED RECESS OF A WIDTH EQUAL TO THAT OF A STAPLE AND PLACED OPPOSITE SAID OPENING WHEN SAID CARRIAGE OCCUPIES SAID FIRST POSITION; A SLIDE-BLOCK MOUNTED IN THE GUIDEWAY AND COMPRISING A STAPLE-PUSHING BLADE MEMBER SLIDINGLY MOUNTED IN SAID RECESS AND RESILIENT MEANS BETWEEN SAID SLIDE-BLOCK AND SAID CARRIAGE FOR NORMALLY MAINTAINING SAID TWO MEMBERS SPACED APART AND FOR RETURNING SAID BLADE MEMBER BEYOND THE OPENING FOR THE PASSAGE OF THE STAPLES WHEN SAID CARRIAGE OCCUPIES SAID FIRST POSITION.