Apparatus for pipe-to-manhole sealing

Claim 2

In combination with a pre-cast, wire mesh, reinforced concrete manhole, having an upstanding cylindrical side wall, apparatus for core drilling a hole in said side wall of said manhole, comprising: frame means detachably supported vertically on a face of said upstanding cylindrical wall of said manhole, by clamp means tightened on the upper rim thereof; said frame means comprising a pair of spaced-apart parallel posts, each having a clamp bracket proximate the upper end thereof, each clamp bracket having rollers therewithin for riding on the rim of a manhole; carriage means movable vertically on said frame means; said carriage means comprising a carriage extending between said posts and having an integral sleeve at each opposite side thereof slidable on one of said posts; cutter track means movable horizontally on said carriage means, and a cutter movable on said cutter track means in a path normal to the side wall of said manhole for cutting a port hole therethrough.

Claim 3

Apparatus as specified in claim 1 wherein: said cutter track means includes gear rack, gear and handle mechanism for moving said track sidewise in a horizontal plane relative to said carriage.

Claim 4

In combination with a reinforced concrete manhole having an upstanding side wall with an upper rim apparatus for core drilling a hole in said side wall comprising: frame means supported on said upper rim and including a pair of posts depending vertically along the face of the upstanding cylindrical wall of said manhole and including clamp means tightened on said upper rim; carriage means movable vertically on said posts, said means including fine threaded vertical adjustment mechanism; core drill track means movable horizontally sidewise on said carriage means, said means including fine threaded sidewise adjustment mechanism; a core drill movable on said core drill track means in a path normal to the side wall of said manhole for core drilling a port hole therethrough, said frame means including a clamp bracket proximate the upper end of each said post, each clamp bracket having a roller therewithin for riding on the upper rim of the side wall of a manhole, and said carriage means includes a carriage extending between said posts and having an integral sleeve at each opposite side thereof slidable on one of said posts.

Claim 5

In combination with a reinforced concrete manhole having an upstanding side wall with an upper rim apparatus for core drilling a hole in said side wall comprising: frame means supported on said upper rim and including a pair of posts depending vertically along the face of the upstanding cylindrical wall of said manhole and including clamp means tightened on said upper rim; carriage means movable vertically on said posts, said means including fine threaded vertical adjustment mechanism; core drill track means movable horizontally sidewise on said carriage means, said means including fine threaded sidewise adjustment mechanism; a core drill movable on said core drill track means in a path normal to the side wall of said manhole for core drilling a port hole therethrough, said frame means including a clamp bracket proximate the upper end of each said post, each clamp bracket having a roller therewithin for riding on the upper rim of the side wall of a manhole, and said carriage means includes a carriage extending between said posts and having an integral sleeve at each opposite side thereof slidable on one of said posts.

Claim 6

In combination with a reinforced concrete manhole having an upstanding wall with an upper rim portable apparatus for core drilling a hole in said side wall of said pre-cast, reinforced concrete manhole, at a construction site, said apparatus comprising: frame means detachably supported on a face of said side wall, said frame means including a pair of spaced apart parallel posts; carriage means movable on said frame means, said carriage means including a carriage extending between said posts and having an integral sleeve at each opposite side thereof slidable on one of said posts and core drilling means mounted on said carriage means and movable in a horizontal path, normal to the face of the said upstanding side wall of said manhole for coring a hole therethrough, and clamping means at the upper end of said frame means, said clamping means having threaded jaws for clamping over the upper rim of said side wall to detachably secure said apparatus on a face of said side wall and having rollers therewithin for riding on the said upper rim.

Claim 7

In combination with a reinforced concrete manhole having an upstanding wall with an upper rim portable apparatus for core drilling a hole in said side wall of said pre-cast, reinforced concrete manhole, at a construction site, said apparatus comprising: frame means detachably supported on a face of said side wall, said frame means including a pair of spaced apart parallel posts; carriage means movable on said frame means, said carriage means including a carriage extending between said posts and having an integral sleeve at each opposite side thereof slidable on one of said posts and core drilling means mounted on said carriage means and movable in a horizontal path, normal to the face of the said upstanding side wall of said manhole for coring a hole therethrough, and clamping means at the upper end of said frame means, said clamping means having threaded jaws for clamping over the upper rim of said side wall to detachably secure said apparatus on a face of said side wall and having rollers therewithin for riding on the said upper rim.

Claim 8

In combination with a reinforced concrete manhole riser having a hollow cylindrical wall apparatus for core drilling a hole in said upstanding, hollow cylindrical, wall of said reinforced concrete manhole riser said apparatus comprising: frame means including at least two parallel vertical posts; vertically movable cutter carriage means movable in a vertical path on said post, said carriage including at least two integral sleeves each slidable on one of said posts; power driven rotary cutter mechanism mounted on said carriage including a hollow cylindrical core drill, rotatable in a vertical plane on a horizontal axis, for coring a hole in said side wall; turntable mechanism alongside said frame means, including a turntable rotatable in a horizontal plane on a vertical axis for rotatably supporting said upstanding manhole riser; and means supporting one said mechanism relative to the other, for movement back and forth in a horizontal plane, to enable said core drill to penetrate through said wall of said riser.

Claim 9

In combination with a reinforced concrete manhole riser having a hollow cylindrical wall apparatus for core drilling a hole in said upstanding, hollow cylindrical, wall of said reinforced concrete manhole riser said apparatus comprising: frame means including at least two parallel vertical posts; vertically movable cutter carriage means movable in a vertical path on said post, said carriage including at least two integral sleeves each slidable on one of said posts; power driven rotary cutter mechanism mounted on said carriage including a hollow cylindrical core drill, rotatable in a vertical plane on a horizontal axis, for coring a hole in said side wall; turntable mechanism alongside said frame means, including a turntable rotatable in a horizontal plane on a vertical axis for rotatably supporting said upstanding manhole riser; and means supporting one said mechanism relative to the other, for movement back and forth in a horizontal plane, to enable said core drill to penetrate through said wall of said riser.

Claim 10

Apparatus as specified in claim 5 wherein: said power driven rotary cutter mechanism includes a plurality of said core drills of different diameters.

Claim 11

Apparatus as specified in claim 5 plus a wheeled truck supporting said turntable mechanism.