1 3 TITLE OF THE INVENTION @ BACKPACK WORKING MACHINE ABSTRACT OF THE DISCLOSURE THE PRESENT INVENTION AINIS AT PROVIDING A BACKPACK WORKINO MACHINE WHICH REDUCCS THE 11LINIBER OF COMPONENTS, SO AS L() MAKE IT CASY TO 5 ASSERNBLE, WHILE FURTHER INIPROVIN- BACKPACKINO PROPERTIES. A BACKPACK WORKING MACHINE I COMPRISES A BACKPACKING FRAME 10 HAVING A FIRST BACKING SURFACE 18, A PLATE-ATTACHED PIPE 26 ATTACHED IN A SWINGABLE NIANNER TO AN END PART OF THE BACKPACKING FRAME 10, AND A LIQUID (ANK 12 FIXED TO THE PLATE-ATTACHED PIPE 26. THE SWINGING AXIS OF THE PLATE- 10 ATTACHED PIPE 26 IS PLACED AT A DEPRESSION 36 PROVIDED IN A PART AD.JACENT TO THE BACKPACKING FRAME 10 IN THE LIQUID TANK 12. THE LIQUID TANK- 12 HAS A SECOND BACKING SURFACE 34 C011TINUOUS WITH THE FIRST BACKIN2SURLACE 1 8 OF THE BACKPACKING FRAME 10. [FIG. 11