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US 4,569,649 AGranted
Machine for making earth blocks
OwnerRobert Grossinventor
Life of this patent
Estimating the term…
Abstract
A machine which makes building blocks from earth efficiently and rapidly has a pair of block forming molds at each end of the machine for simultaneously forming blocks at each end by means of a pair of rams. The hydraulic cylinder which actuates the two rams is located away from the axis between the two rams. The use of two molds eliminates wasted motion of the machine as a block is formed at one end of the machine as the ram is being retracted from the other end.
Claims15
A machine for making blocks from earth which comprises:
- a pair of block forming molds;
- a pair of reciprocal ram heads, each of the heads capable of being moved between a retracted position in which the head is removed from the mold and earth can fall into the mold, and an advanced position in which the head is moved into one of the molds and earth in the mold is compressed to form a block;
- a slide member connecting the two rams heads, one of the heads being attached to each end of the slide member, the slide member being longitudinally movable to simultaneously move one ram head to its advanced position and the other ram head to its retracted position;
- a support frame upon which the slide member is mounted for longitudinal movement;
- and
- a dual-action hydraulic cylinder having an internal piston, the cylinder and piston being attached to the slide member and support frame to move the slide member longitudinally with respect to the support frame, the cylinder being mounted away from the axis between the ram heads.
3 more elements
A machine for making blocks from earth, which comprises:
- a pair of block forming molds, each having a bottom and two sides;
- a pair of movable gates, each of the gates closing one end of the molds;
- a pair of reciprocal ram heads, each of the heads capable of being moved between a retracted position in which the head is removed from the molds and earth can fall into the mold, and an advanced position in which the head is moved into one of the molds and earth in the mold is compressed to form a block;
- a slide member connecting the two ram heads, one of the heads being attached to each end of the slide member, the slide member longitudinally movable to simultaneously move one ram head to its advanced position and the other ram head to its retracted position;
- a support frame upon which the slide member is mounted for longitudinal movement;
- a dual-action hydraulic cylinder having an internal piston, the cylinder being attached to the slide member and the piston being attached to the support frame to move the slide member longitudinally with respect to the support frame, the cylinder being mounted away from the axis between the ram heads;
- and
- means for supplying hydraulic fluid to the cylinder, the supplying means comprising a first low-pressure high-displacement supplying means for moving the cylinder rapidly at low pressure, and a second high-pressure supplying means for moving the cylinder slowly at high pressures in excess of 2,000 psi.
5 more elements
Dependencies are inferred from the claim text.