Abstract A pipe mold for vertically cast concrete pipe includes a cylindrical outer mold case, a cylindrical core spaced inside the mold case, and a pipe-reinforcing cylinder between the core and the case. A system for casting concrete in the pipe mold includes a flat facing ring above the annular space between the mold case and the cylinder. A chute assembly mounted concentrically above the pipe mold includes several radially spaced apart pouring chutes extending downwardly from the center of the chute assembly to corresponding radially spaced apart openings in the facing ring. The pouring chutes channel the flow of concrete into the openings in the facing ring to fill the pipe mold to the bottom surface of the facing ring, which forms a flat annular end section at the desired elevation on the pipe. The facing ring eliminates the need for hand finishing and measuring which is common in the prior art manufacture of vertically cast concrete pipe. A concrete pipe with a beveled end section is formed by mounting the facing ring in an angular plane above the pipe mold. As the concrete is channeled into the openings of the beveled facing ring, gates in the pouring chutes are sequentially closed to progressively block the rise of concrete from the low side to the high side of the facing ring until the pipe mold is filled to the bottom of the ring which automatically forms a flat, beveled annular end section at the desired elevation on the pipe.
Inventors
👤 F Wells
Bibliographic Details
Application Number—
JurisdictionUS
Data Sourcegoogle_patents
Last Synchronized2026-11-09 03:31
CPC Classifications
B; B28; B28B; B28B21/00; B28B21/02; B28B21/04
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
163 words
Apparatus for casting concrete pipe in a vertically disposed pipe mold having a cylindrical outer mold case, and an inner cylinder disposed concentrically inside the outer mold case to form an annular mold cavity into which concrete is to be poured, the apparatus comprising a flat facing ring encircling the cylinder and mounted above the annular mold cavity, the facing ring including gate means capable of being opened and closed to control passage of the concrete through the facing ring into the mold cavity, and a downwardly extending pouring chute mounted in a fixed position above the facing ring in communication with the gate means of the facing ring so that concrete poured onto the pouring chute will be distributed by the pouring chute through the gate means to the annular mold cavity, the facing ring providing a flat undersurface which will form a flat annular end section of the cast pipe when concrete is filled to the bottom of the facing ring.
Claim 2
Dependent Claim
163 words
Apparatus for casting concrete pipe in a vertically disposed pipe mold having a cylindrical outer mold case, and an inner cylinder disposed concentrically inside the outer mold case to form an annular mold cavity into which concrete is to be poured, the apparatus comprising a flat facing ring encircling the cylinder and mounted above the annular mold cavity, the facing ring including gate means capable of being opened and closed to control passage of the concrete through the facing ring into the mold cavity, and a downwardly extending pouring chute mounted in a fixed position above the facing ring in communication with the gate means of the facing ring so that concrete poured onto the pouring chute will be distributed by the pouring chute through the gate means to the annular mold cavity, the facing ring providing a flat undersurface which will form a flat annular end section of the cast pipe when concrete is filled to the bottom of the facing ring.
Claim 3
Dependent Claim
92 words
Apparatus according to claim 1 in which the pipe mold includes a cylindrical inner core disposed concentrically inside the cylinder to form an inner annular mold cavity into whiCh concrete is to be poured, and in which the facing ring is mounted only above the outer annular mold cavity between the outer mold case and the cylinder, and in which the pouring chute is mounted above both mold cavities so that the pouring chute can be in communication with the inner mold cavity or with the gate means of the facing ring.
Claim 4
Dependent Claim
36 words
Apparatus according to claim 2 including means for extending the length of the pouring chute to circumvent the inner mold cavity and allow concrete to be poured directly through the gate means of the facing ring.
Claim 5
Dependent Claim
65 words
Apparatus according to claim 1 including several radially spaced apart gate means located around the facing ring, and including a separate radially extending and elongated pouring chute associated with each gate means, the pouring chutes being spaced apart radially so that each one is in communication with its corresponding gate means when the pouring chutes are held in a fixed position above the facing ring.
Claim 6
Dependent Claim
110 words
Apparatus according to claim 4 including means for holding the facing ring at an angle inclined relative to true horizontal so the facing ring will form a beveled end section for the pipe, and including gate means for selectively blocking the passage of concrete through certain of the pouring chutes so that sequential closing of the gate means of the pouring chutes, once the level of the poured concrete reaches the low side of the inclined facing ring, will progressively block the rise of concrete from the low side to the high side of the facing ring so the facing ring will form the beveled end section of the pipe.
Claim 7
Dependent Claim
33 words
Apparatus according to claim 1 including means for holding the facing ring at an angle inclined relative to true horizontal so the facing ring will form a beveled end section for the pipe.