Title:
Roof drain
United States Patent 2121220


Abstract:
This invention relates in general to a drain outlet for a flat or plain surface and is more particularly described as ah outlet for a roof. Among the important objects of the invent tion are; the provision of improved means for removably attaching a domed outlet to a roof insert; to provide...



Inventors:
Filkins, Arthur J.
Application Number:
US11652936A
Publication Date:
06/21/1938
Filing Date:
12/18/1936
Assignee:
PAUL DICKINSON INC
Primary Class:
Other Classes:
210/497.3
International Classes:
E04D13/04
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Description:

This invention relates in general to a drain outlet for a flat or plain surface and is more particularly described as ah outlet for a roof.

Among the important objects of the invent tion are; the provision of improved means for removably attaching a domed outlet to a roof insert; to provide a domed outlet with an integral clamping ring gravel stop; to provide an improved roof insert for a drain of this type; I to [ provide improved means for attaching the roof insert to a drain pipe; and in general to produce the structure herein shown and described.

In the accompanying drawing illustrating a I preferred embodiment of the invention, Fig. 1 is a view partly in section and partly in side elevation, of a roof drain structure as applied to a roof; and Pig. 2 is a top view of the structure shown in Fig. 1.

In a roof drain it is desirable to provide an outlet which has a domed structure extending above the ordinary roof level to provide for a rush of water or other liquid, and to provide an increased outlet therefor even though the ordinary lower drain openings are clogged by an accummulation of dirt or debris.

It is also desirable to provide a roof drain which is easily and quickly removable for cleanhIg but Which may be inserted tightly in place, clamping an extending edge of the roofing material such as waterproof paper, felt or the like, to hmake a waterproof joint. In a structure of this kind it is also desirable to provide a .35 gravel stop which Will engage the ordinary particles of gravel or other roof covering material and prevent it from clogging the ordinary lower discharge openings of the drain. A practical roof drain must also be quickly and adjustably attached at the end of a discharge pipe so that the roof member may be easily adjusted and set in position, producing a waterproof joint with the pipe.

Referring now more particularly to the drawing, a roof drain comprising a roof member 4 is set into or suitably supported by a roof structure 5, including also a roof covering 6 of layers of roofing material, usually waterproof paper or felt, but may also be sheet metal or other 80 similar roofing material, the upper edge of the member 4 which is preferably in the form of a circular funnel is flush with the edge of the roof below the roofing material 6 so that the edge of this material extends into the dpwnwardly in5 dcined edge of the roof member 4.

To connect the roof member 4 to a downspout 7, the lower end of the member is formed with a gland extension 8 having an inward angular extension 9 ahd closely embracing the pipe and forming a partition for packing material 10, such as oakum or the like, inserted from the bottom of the member around the pipe, and for a sealing gasket I of lead and the like which is poured in at the bottom of the member 4 around the pipe 7 and held in place by a sealing groove 12. At the bottom of the extension is a clamping gland ring I3 having an inclined isurface 1'4 for wedging a packing material 15 such as flax packing in and around the bottom of the gland extension 8 and against the partition 9. This ring 13 is clamped tightly against the packing 15 by fastening bolts 16 inserted through the outer flange of the ring 13 and through corresponding threaded ears Ii at the outer side of the extension 8. A dome member 20 has a number of lateral openings or slits 21 in its sides and additional slits or openings 22 adjacent the bottom and at the top of the dome are a plurality of openings 23, the sides of which are widened inwardly to prevent the lodgment of any dirt which is large enough to pass through the outer surface. The lower rim or edge 24 of the dome is continuous and has an outer inclihed surface 25 corresponding to the inner inclination of the member 4. The outer edge also has a partially overlapping rim 26 which extends over the top of the member 4 and has a number of V-shaped grooves 27 in the upper edge which form liquid openings to the inside of the rim, the rim it- 85 self constituting a gravel stop for preventing roof material from passing freely to the lower edges of the openings 21 and 22.

Inside of the roof member 4 at each side thereof are a pair of projections 28, together forming a bifurcated hook for engaging the head 29 of a fastening bolt 30 which is inserted from the inside through one of the slots 21 to the outer side of the dome where a clamping surface 31 is provided for engaging a fastening nut 32 preferably of the wing nut type so that it may be quickly turned up on the threaded portion of the bolt by the hand or fingers of an operator.

In applying the dome member, the bolts extending loosely through opposite slots 21 are moved to engage their heads with the hooks 28 and the thumb nuts 32 are tightened in place which causes the inclined surface 25 to bear against the edge of the roofing sheets 6 which overlap the inclined edge of the roof member 4 and the slightly overhanging rim 26 is drawn down tightly against the top of the roofing material so that it is clamped tightly in place, making a watertight connection and preventing any leakage around the roof drain.

The projections 28 which form the hooks for engaging the fastening bolts 30 are located below the clamping surfaces 25 and 31 so that the heads 29 of the bolts are easily engaged with the fastening hooks formed by the projections without obstruction by the edge of the roofing cover or sheets 6, so that it is not necessary to insert the bolts through the cover nor to damage or disfigure the cover in any way.

Furthermore the bolt heads are more easily engaged with the hooks than by attempting to insert them in a threaded opening and thus to tighten the parts together. In practice the bolts are inserted from the bottom through the perforations of the dome and the fastening wing nuts 32 are loosened so that the heads are easily extended and manipulated to engage the hooks.

The slots 21 and 22 as well as the openings 23 are largest toward the bottom so that they tend to be self-cleaning for dirt and foreign material which tends to lodge and fill up the openings, the gravel stop rim tends to prevent the roof particles from flowing over onto the roof drain and the openings 27 allow the water or other liquid to pass through almost to the level of the roofing material itself. The dome member of the roof drain is easily and quickly removed for cleaning or replacement and the roof drain itself is easily and quickly installed on the upper end of a pipe and in contact with the roof supporting members.

I claim: 1. A roof drain comprising a roof member and a perforate dome having corresponding inclined surfaces, to engage a roof cover therebetween fastening means extending through openings of the dome, and projections on the inside of the member beyond and free from the edges of a roof Scover to engage the fastening means without obstruction with said cover.

2. In a roof drain, a roof member and a dome therefor having inclined surfaces fitting together at the upper and inner edge of the member and adapted to engage the edge of roof cover layers therebetween, and means to clamp the dome against the member with roof layers therebetween, said means comprising a bolt extending through the dome, and the roof member having projections below the edge of the roof cover for making engagement with the bolt head.

3. In a roof drain, a roof member having an inner inclined funnel surface, a perforate dome having a rim with an inclined surface to fit the outer funnel surface, and with an outer portion partially overlapping the upper rim of the funnel surface, pairs of projections at the inside of the roof member below the funnel surface, and fastening bolts inserted through the dome and the heads adapted to be hooked into engagement with said projections for fastening the dome to the roof member.

4. In a roof drain according to claim 3, the outer rim of the dome extending upwardly about the edge outside of said bolts to form a gravel stop and having notches downwardly in the upwardly extending portion for the passage of water :hlmost to the level of the roof member.

5. In a roof drain, a roof member and a dome seated within and contacting at its edge in the member and means for securing it thereto at the inside of the seating edge, the dome having openings through its wall which are larger at the bottoms than at the tops to prevent clogging the openings, and the lower ends of the openings being below the securing edge and below the level of the upper edge of the roof member.

6. In a roof drain, a covering dome having an outer rim and a connected wall which extends below the upper edge of the rim and with slots therein extending vertically and below the rim, and a roof member in which the dome is seated by contact with the said outer rim only.

7. In a roof drain, a perforate dome having an outer rim extending upwardly above the lower ends of the perforations with an outer beveled clamping edge and having notches in the upper edge of the rim forming a gravel stop but allowing a liquid drainage through the notches, and a roof member having an inner inclined surface at the top to engage said clamping edge.

8. In a roof drain, a roof member with a funnel opening, a perforate dome having an outer clamping rim to fit the top of the opening with a roof layer therebetween, fastening bolts extending through opposite dome openings, projections in the funnel below the clamping rim to engage the bolt heads, and a contact surface at the outer side of the dome through which the bolt extends for flatly engaging a fastening nut on the bolt. 9. In a roof drain, a roof member having a funnel opening with a flange at one end to extend under the roofing and a drain pipe extension at the other, means forming a water-tight drain pipe connection, and means including a perforate dome with an outer engaging rim for clamping the edge of roofing between it and the upper edge of the funnel for forming a watertight connection at the top of the roof, said means including fastening devices inserted through perforations of the dome and engaging the roof member beyond and free of the clamped edge of the roofing.

ARTHUR J. FILKINS.

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