Ricercando attraverso "google patents" dei precedenti brevetti sui quali si rivendicavano delle innovazioni ci si imbatte in una serie di documenti classificati come "similar" che però riguardano fondamentalmente l'edilizia e in particolare lo stampo di mattoni. Ciò che il brevetto reclama è:
-" In a mold-filling machine, the combination of the casing open at
bottom, hollow vertical partitions in the casing, verticallysliding
plates in said hollow partitions, and a cut-off plate at the bottom of
the casing".
- "In a mold-filling machine, the combination of the open bottom casing laring at the top, vertical hollow partitions in said casing,
vertically-sliding plates in said partitions, and means for moving them
from outside the casing, and a slotted cut-off plate through which
slots the lower ends of the verticallysliding plates move, substantially
as described".
- "In a mold-filling machine, the combination of the casing having vertical
partitions, vertically moving plates which when depressed form
extensions of said partitions, means for lifting said plates, a
transverselysliding cut-off plate having slots through which the
vertically-movable plates pass, and a mold of substantially the area of
the lower end of the casing, substantially as described".
- "In a machine as described, the casing having its lower portion
constructed with slotted parallel sides, vertically-movable plates
having ears extending through said slots in the casing, covering-plates
outside the pasing to which the ears are connected and means for lifting
said covering-plates, substantially as described".
- "The combination of the slotted casing, the vertically-movable plates
therein having, lugs extending through said slots, the covering-plates
outside said casing connected to said lugs, and the links and forked
lever connected to said covering-plates, substantially as described".
- "The combination with the open-bottomed casing or filling-receptacle, of
vertically-movable plates extensible from the bottom thereof, a mold
corresponding to the bottom of the easing into which the plates are
extended, thereby forming partitions in the mold, and a cut-off gate
movable below the bottom of the filling-receptacle".
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