Plastic and nonmetallic article shaping or treating: processes – Treatment of material by vibrating – jarring – or agitating... – By reciprocating or vibrating mold
Patent
1990-02-12
1990-12-18
Silbaugh, Jan H.
Plastic and nonmetallic article shaping or treating: processes
Treatment of material by vibrating, jarring, or agitating...
By reciprocating or vibrating mold
74 61, 74 87, 198770, 2093665, 209367, 2642979, 310 81, 366128, 425155, 425421, 425432, 425456, B28B 108, B28B 306, B65G 2720
Patent
active
049784889
ABSTRACT:
A concrete block molding machine has a vibratible mold box incorporating at least one molding cavity for a cement mixture which is to be densified in the cavity. A continuously driven shaft assembly mounts an eccentric fixed portion and a circumferentially adjustable balancing mass. The shaft assembly has a cylinder with a piston therein, connected to the mass to produce rotary motion of the mass relative to the fixed eccentric portion. A spring of predetermined rate opposes this. The pressure of the fluid introduced is varied to change the amplitude of the vibration imparted during each cycle.
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Besser Company
Kutach Karen D.
Silbaugh Jan H.
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