US1469790A - Bell-trap floor drain - Google Patents

Description

`Oct. 9 1923.

1,469,790 v H. H.- HYsKQ BELL TRAP FLOOR DRAIN y\ Filed May 2, 1921 9 nfl Patented Oct. 9., 1923.

UNITED STATES 1,469,790 PATENT OFFICE.v

HIPOLIT H. HYSKOfOF DETROIT, MICHIGAN.

BELLf'rRAP FLooR DRAIN.

of Michigan, have invented a new and useful Bell-Trap Floor Drain, of which the following is a specification.

This invention relates to bell trap floor drains, and more particularly to bell trap floor drains having check valves Ipreventing a back flow from the sewer into which the drain empties.

It is the object of the invention to provide a fitting of the type specified that will afford easy access to the check valve so that the same may be inspected and replaced when necessary without difiiculty.`

A further object of the inventionis to utilize certain standard parts in constructing the improved fitting so as to minimize the preliminary manufacturing expense.

In attaining these objects the invention contemplates arranging a check valve casing permanently below a fioor and in discharge connection with a drain pipe, and removably fitting in said Hoor a bell trap member detachably secured to said check valve casing` and having a suitably perforated cover flush with the fioor, said trap seating upon said valve casing andy discharging therethrough into the drain pipe.

A preferred embodiment of the invention is hereinafter disclosed and is illustrated in the accompanying drawing, wherein,

Fig. 1 is a view of the improved fitting in side elevation.

Fig. 2 is a vertical sectional view ofthe fitting showing the same installed in a floor.

Fig. 3 is a plan view of the device.

ln these views the reference character 1 designates a Hoor formed of concrete or the like, and 2 is a drain pipe beneath said floor and opening in close proximity to the floor. Within the upper end of said pipe there depends a cylindrical open-ended casing 3 for a ball valve 4, said casing having at its upper end a flange 5 engaging beneath thel floor 1 and having one or more rods 6 dias metrically arranged within its lower end to retain said ball Ivalve. Also to compensate, under normal conditions, for restricting of the passage through said casing by the ball valve., it is preferred to form a circumferentia-l series of discharge ports 7 in said casing. A bowl-shaped trap member 8 is removably fitted in the floor 1, above the pipe 1921. seriai No. 466,516.2.

2, and is formed with a marginal fiange 9 engaging the .floor Hush with the surface thereof. Said bowl-shaped member is integrally formed with a central tubular discharge outlet 10 projecting a considerable distance upwardly into the bowl and extending downwardly a lesser distance. The depending portion ll of said outlet has a relatively thick wall and is exteriorly tapered to snugly engagea correspondin ly shaped seat 12 formed within the upper end of the casing 3. Said depending portion is terminally formed with an interior flare, as indicated at 13, and as is shown in dash lines in IFig. 2. The flared surface 13 provides a seat'for the ball valve 4 when the latter is subjected to the pressure of a back iiow in the pipe 2.

The rim of the bowl member 8v forms a seat for a perforated drain plate 14 to which is centrally secured within said bowl member, a bell-shaped guard or shield 15 which surrounds the intake end of the outlet 10, being spaced from the latter to form a restricted annular passage 16. A hinged connection may be vformed between the plate 14 and bowl member 8, the drawing showing Such a connection established by a pair of curved pins 17 secured to said plate adjacent the edge thereof and rejectingr downwardly and laterally to loose y engage in apertures 18 in the top portion of the bowl member. Provision is also made by the invention for normally 'lat'ching the plate 14 in its position of use, this provision comprising a leaf spring 19 exteriorly secured to the bowl member and projecting upwardly within a housing 20 formed integrally with said bowl member, a latch head 21 being carried by the upper end of said spring and engaged normally in a depressed portion 22 formed in the plate 14 diametrically opposite to the hinge 17. By slightly stressing the spring 19 said latch head may be disengaged vfrom the drain plate 14, permitting the latter to be swung up to give access to the trap. The trap member is detachably secured upon the val-ve member by bolts 23 which extend through the flange 9 of the fomer into engagement with screwthreaded bosses 24 on the flange 5 of the latter member. lV'hen.

placementof the ball'valve may be accom- Leesgeo a water tight joint:

rEhe described construction is one that What I claim is:

be inexpensively manufactured easily installed.

A bell trap drain comprising a cylindrical casing anged tapered opening therein,

at one end and having a a ball valve in said and casing, a danged cylindrcaltrap member having a central depending portion tapered exteriorly for seating engagement with the btapered opening of said casing vand interiorly tapered for seating engagement with said ball valve, and tie members interconnecting the Ranges of said valve case and trap member for retaining said members engaged.

ln testimony whereof l sign this speciication.

Hrromr H. HYsKo.

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