US831411A - Ventilating-roof. - Google Patents

Description

. PATENTED SEPT. 18, 1906.

J". BRASELTON.

VENTILATING ROOF.

APPLIGATIIONVIILED MAB.8, 1906.

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JOHN BRASELTON, OF DANVILLE. ILLINOIS.

VENTlLATING-ROOF.

Specification of Letters Patent.

Patented Sept. 18, 1906.

Application filed March 8, 1906. Serial No. 804,992.

To all whom it may concern.-

Be it known that I, JOHN BRASELTON, a citizen of the United States, residing at Danville, in the county of Vermilion and State of Illinois, have invented new and useful Im provements in Ventilating-Roofs, of which the following is a specification.

This invention is a roof designed to provide ventilation for the building or rooms under the same and such ventilation to be produced by novel and effective means for heating the air in the garret and allowing the same to escape through the roof, the garret being connected by suitable openings or conduits with the rooms below, which will have the effect of drawing the foul air out of the rooms and carrying the same up through the roof, and since the flow of air is induced by the heating action of the sun on the air in the garret the ventilation or amount of air which is carried off will increase as the heat of the sun increases, thereby affording a very pleasant relief in hot weather and providing a supply of fresh air at all times.

In the accompanying drawings, Figure 1 is a cross-section of the roof and upper part of a building provided with the invention. Fig. 2 is a longitudinal section thereof on the line 2 2 of Fig. 1.

Referring specifically to the drawings, the rafters of the main roof are indicated at 6, and the shingles or other covering at 7. These parts form an outer roof which in construction is not essentially different from an ordinary gable-roof. At or about the middle at the top it has an opening 8, covered by a cap 9. The joists in the garret are indicated at 10, supporting the ceilings of the rooms below, as indicated at 11, and located in these ceilings are boxed openings 12, of which there may be as many as desired, according to the rooms and halls to be ventilated. By means of pipe extensions from one or more of such openings rooms in one or more stories below can be ventilated.

Within the garret, constructed as above stated, I construct a smaller roof or structure consisting of short rafters 13, covered by boards 14. This inner roof runs from one gable end to the other, as clearly shown in Fig. 2. The rafters 13 are set at their lower ends upon the top of the joists 10, and the covering 14 extends down to the upper edge of said joists. This leaves spaces between the joists and between the lower edge of said inner roof and the ceiling 11, through which air can escape into the space between the inner and outer roofs. It is in the latter space that the air confined between the outer roof 7 and the inner roof 14 becomes highly heated, the space forming a sort of flue in which the air is heated by the heat of the sun, and it is confined against substantially any circulation except an upward flow through the opening 8. The sun beating on the outer roof rapidly heats the air in the contracted space thereunder, and the air flows out through the opening in the top. This induces a draft from the space under the inner roof, and consequently from the rooms below, through the openings 12. The gable ends and other parts of the roof are all made as tight as possible to assist the draft from the rooms below, so that all the air which passes out at the top of the roof is drawn through the rooms. I

I am aware that it is old to make holes covered by a cap in the top of a roof for the purpose of ventilation and also that it has been proposed to connect the garret with the rooms below by means of ducts; but I believe that I am the first to contract the space within a garret by the construction of an inner or false roof, in which contracted space the air is more readily heated and from which it will flow with greater freedom for the purpose of creating a stronger draft through therooms below.

The openings 8 in the top of the roof covered by the caps 9 can be multiplied, if desired, depending on the size of the house and the number of rooms to be ventilated. Thus for a house containing a large number of rooms several of said outlets may be made along the ridge of the roof. The preferred manner of conducting air from a lower room, as referred to hereinbefore, is to provide openings in the ceiling of such lower rooms and then provide pipes extending from said openings through the ceilings and through the side walls of the upper room to the space between the upper and lower roofs. Each of the openings or boxes 12 is provided with a valve 12, which may be opened or closed, as desired, so that one or more of the rooms may be ventilated.

The invention will be found particularly useful for hospitals or sick-rooms. For example, when a person is sick the ventilation may be applied to the room, and by shutting off more or less of the other rooms the draft can be made as strong as desired. This will provide pure air and sufficient ventilation for the sick person and in addition tend to prevent the spread of contagious diseases.

If desired, a pipe may extend from the ventilating-box in the ceiling to a position directly over the patient, so that odors arising will be immediately conducted away through the ventilator. By opening or closing more or less of the valves the whole force of the ventilation can be applied to more or less rooms.

The device will serve to conduct smoke from a kitchen, for instance, and will be found useful in very many other particulars.

I claim 1. The combination with an outer inclined roof having a ventilating-opening at the top, of an inner roof thereunder, forming a contracted space between the roofs, and having openings into the bottom of said space from the rooms below.

2. The combination with the garret-joists, having openings in the ceiling therebetween from the rooms below, of a main outer gableroof, having a ventilating-o ening at the top, and an inner roof eXten ing between the gable ends and supported on the joists over said openings and having sides substantially parallel with those of the outer roof, forming a contracted space which communicates between the joists with the openings in the ceil- Tn testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

JOHN BRASELTON.

Witnesses:

J. ALBERT MILLER, CLAUDE A. ALLEN.

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