are the same as the components in the blow and blow plunger mechanism 50 shown in fig4 common components are identified by the same reference numbers in fig4 and 8 and similar components are denoted with a primed 39 reference number if the component of the press and blow plunger mechanism 52 shown in fig8 varies slightly from the corresponding component in the blow and blow plunger mechanism 50 shown in fig4 as to these common and similar components their nature and function may be comprehended from the abbreviated explanation provided below in conjunction with the press and blow plunger mechanism taken in conjunction with the more complete explanation of the blow and blow plunger mechanism described above the press and blow plunger mechanism 52 includes two pistons a plunger piston 68 and a thimble piston 72 39 the housing for the plunger mechanism 52 is formed by the bottom end plate 86 the lower housing member 84 the stop plate 100 39 an upper housing member 134 39 and an upper end plate 136 39 the plunger piston 68 moves vertically within the cylinder 82 and is attached to the plunger shaft 74 the center opening 92 39 within the shaft 74 fits over the center tube 90 and allows the shaft 74 to move vertically relative to the tube 90 within the cylinder 82 the stop plate 100 39 attaches to the top of the housing member 84 to define the upper end of the cylinder 82 the upper housing member 134 39 is attached to the top of the stop plate 100 39 the thimble piston 72 39 moves within.