US267741A

US267741A - Ventilator

Info

Publication number: US267741A
Authority: US
Publication date: 1882-11-21
Anticipated expiration: 1899-11-21

Description

(No Model.)

M. H. DORGAN.

VBNTILATOR.

No. 267,741. 7 Patented Nov. 21, 1882.

n. PUERS. Hmomm n hor, Wanhington. n. c.

U ITED STATES PATENT @rrrcn.

' MICHAEL H. DORGAN, SAN FRANCISCO, CALIFORNIA,

VENTILATQR.

SPECIFICATION forming part of Letters Patent No. 267,741, dated November 21, 1882.

' Application filed June 5, 1882. (No model.)

To all whom it may concern: 1

Be it known that I, MICHAEL H. DORGAN, of the city and county of San Francisco, State of California, have invented an Improved Ventilator; and I hereby declare the following to be a full, clear, and exact description thereof. My invention relates to certain im provemen ts in that class of ventilating deviceswhichare swiveled upon the tops of soil-pipes, fines, &;c.; and my invention consists in a conical casing with spaced walls opening at the frustuin into a cylindrical pipe, in which and in the opening of the cone is placed a double conicalplng. The device is provided with a vane for keeping it in the wind and with a suitable coupling swiveling it in place, all of which will hereinafter fully appear.

The object of my invention is to provide an efficient device for ventilating soil-pipes,&c., which object I gain by the followingconstruction, reference being made to thenccom pan yiug drawings, in which-- 1 Figure 1 is a perspective. tudinal section.

Let A represent a hollow casing havinga conical shape. At its frustum it is connected h 2 is a longiwith a pipe, B.

0 represents a conical shell or casing, the base of which has a diameter about equal to the casing A, and its frustum is smaller, as shown. The shell 0 is inserted in A,the bases of both being soldered or joined together. Said shell 0 thus forms the inner wall of the conical casing, and because of its construction a space, a, is formed between the two, the opening of which is in relation with the pipe B.

D is a plug consisting of two cones, the bases of which are together. This plug is smaller than the opening of the frustum of easing O, and is supported by arms d in such position that one apex extends into said casing and the other extends into the pipe B, leaving an annular opening between it and the casing and pipe B.

Into the under side of the casing A is let a pipe, E, which opens into the space a.

F is a pipe provided with a central spindle, f.

The pipe F extends within pipe E, and its spin- 'dle passes through the walls of casings A and O, and through the center up to the upper walls in suitable bearings. This construction is simply a means for swiveling the device upon pipe F, in order that by means. of a vane, G, with which pipe B is provided, the mouth of the ventilator may be always kept in the wind.

Let H represent a soilpipe extending from closets located and connected suitably therewith; Upon its top the pipe F is secured.

The operation of the device is as follows: The wind is directed within the wide open mouth of the conical casing, and finds a vent through the annular opening around the conical plug D. On account of the interposition of this plug and its shape, as well as the shape of the casing, a strong draft is produced, which is augmented by the shape of the rear of the plug D, so that the wind passes through with considerable force, and very much less wind is required to produce the eii'ect. This draft exhausts the air from the space a and ventilates the soil pipe. The opening of the space a around the frustuins of the two casings is free, and allows a ready exhaust and perfect ventilation of the soil-pipe.

Having thus described my invention, what I (311 iii] as new, and desire to secure by Letters atent, is

1. In a ventilator for soil-pipes, tines, &c., the arrangement of the spaced conical casing A O with its frustuni-openiugs, the pipe B, the double conical plug D in the opening of the casing, and-an inlet-pipe, E, substantially as herein described.

2. A ventilator for soil-pipes, fines, &c., consisting of the spaced conical casing A U, with its frustuiii-openings, the pipe B, with its vane G, the double conical plug 1), the inlet-pipe E, and the swivel-pipe F, with its spindle f, all arranged and combined substantially as herein described.

1n witness whereof I hereunto set my hand.

MICHAEL H. DORGAN.