Patent US5974492A successfully refreshed from Google Patents.
Patent US3940229A successfully refreshed from Google Patents.
US3940229A
Expired / Lapsed
US
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Apparatus for manufacturing rough faced bricks
Assignee: Columbia Machine Inc
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Filing: 1974-02-22
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Granted: 1976-02-24
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Expires: 1994-02-22
Abstract
Abstract Apparatus for manufacturing a brick having a roughened side surface including interconnected, upright, side plates defining a mold cavity having generally the shape of a brick to be formed. A bottom plate is shiftable vertically from a position against the lower edges of the side plates to form a bottom for the mold and a position spaced a distance therebelow. A power-operated pusher mounted above the side plates is shiftable downwardly into the region between the side plates for forcing a brick formed in the mold outwardly through the bottom of the mold when the bottom plate is lowered. One of the side plates has a lip projecting substantially normally outwardly therefrom into the path along which a side of a brick will be moved as it is forced from the mold. This lip scrapes a side of the brick to produce a roughened surface thereon.
Inventors
- 👤 John R. Hutton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 09:14
CPC Classifications
B; B28; B28B; B28B13/00; B28B13/04; B28B13/06; B28B7/00; B28B7/0061; B28B7/0064; B28B7/007
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
152 words
Apparatus for manufacturing a brick having a roughened side surface, said apparatus comprising a mold including a plurality of interconnected side plates defining a cavity therebetween having substantially the shape of a brick to be formed and adapted to receive material for molding into brick shape, said side plates having a set of edge margins defining an opening therebetween through which a formed uncured brick may be discharged from the mold, one of said side plates having an elongate lip rigidly secured thereon adjacent said opening, said lip extending substantially parallel to said edge margin of the plate and projecting substantially normally into the path along which a side of a brick moves on being discharged from said mold operable to tear a portion of the material forming said brick from the surface of the brick as it is discharged from the mold to produce an irregularly roughened surface for said brick.
Claim 2
Dependent Claim
152 words
Apparatus for manufacturing a brick having a roughened side surface, said apparatus comprising a mold including a plurality of interconnected side plates defining a cavity therebetween having substantially the shape of a brick to be formed and adapted to receive material for molding into brick shape, said side plates having a set of edge margins defining an opening therebetween through which a formed uncured brick may be discharged from the mold, one of said side plates having an elongate lip rigidly secured thereon adjacent said opening, said lip extending substantially parallel to said edge margin of the plate and projecting substantially normally into the path along which a side of a brick moves on being discharged from said mold operable to tear a portion of the material forming said brick from the surface of the brick as it is discharged from the mold to produce an irregularly roughened surface for said brick.
Claim 3
Dependent Claim
40 words
The apparatus of claim 1, wherein the path along which the brick moves on being discharged from said mold is substantially parallel to the side plate having said lip and said lip projects substantially normally outwardly from said side plate.
Claim 4
Dependent Claim
21 words
The apparatus of claim 1, wherein said lip projects outwardly from its associated side plate a distance less than 0.15 inch.
Claim 5
Dependent Claim
43 words
The apparatus of claim 1, which further comprises powered means operable to engage a formed, uncured brick in said mold on a side of the brick opposite said opening and to force said brick through said opening to discharge it from the mold.
Claim 6
Dependent Claim
157 words
The apparatus of claim 1, wherein said side plates are disposed substantially upright in the mold with upper marginal edge portions of said side plates bounding an opening in the top of the mold and lower marginal edge portions of said side plates bounding an opening in the bottom of the mold, said lip on a side plate being disposed adjacent the lower marginal edge of its associated plate, and which further comprises a substantially horizontal bottom plate mounted for vertical movement toward and away from said lower marginal edge portions of the side plates between a raised position contiguous the lower edge portion of said side plates and a lowered position spaced a distance therebelow, and a power-operated, vertically shiftable pusher mounted for powered vertical movement from a position spaced above said mold to a position in said mold for forcing a brick through said bottom opening in the mold when said bottom plate is lowered.
Claim 7
Dependent Claim
28 words
The apparatus of claim 5, which further comprises means for lowering said bottom plate at substantially the same speed at which said pusher is moved into said mold.
Claim 8
Dependent Claim
21 words
The apparatus of claim 1, wherein said lip is serrated along an edge thereof facing outwardly from said one side plate.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-02-23 | 1979-08-25 | 1980-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-02-23 | 1983-08-25 | 1984-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-02-23 | 1987-08-25 | 1988-02-24 | $7700.00 | Window Closed / Lapsed |