US297189A

US297189A - Maeshall b

Info

Publication number: US297189A
Authority: US
Publication date: 1884-04-22
Anticipated expiration: 1901-04-22

Description

(No Model.)

M. B. STAFFORD.

MEANS OP VENTILATION.

PATENT y rrrcn.

MARSHALL B. STAFFORD, OF NEV YORK, N. Y.

MEANS OFVENTILATION.

SPECIFICATION forming part of Letters Patent No. 297,189, dated April 22, 1884.

Application filed May 3, 1883. (No model.)

To all whom, t may concern.-

Be it known that I, MARsnALL B. STAFFORD, a citizen of the United States, residing at New York, in the county of New York and State of New York, have invented certain new and useful Improvements in the Means of Ventilation and I do hereby declare the fol-lowing to be a full, clear, and exact description ofthe invention, such as will enable others skilled in the art to which it appertains to malle and use the same.

The invention relates to an improved means for Ventilating buildings and for equalizing and regulating the temperature thereof. It is based upon the theory that foul air is heavier than pure air, and consequently falls to the floor, and that from its nature it can only be removed by positive means, it having no tendency to 'pass oft in a current unless impelled so to do by means other than the mere admission of fresh air. According to this theory, the pure air will be in the upper portion of the apartment, where it will not be available to the occupants unless the foul air is removed and it is brought down to lill the vacuum thereby created. According to my invention this result is attained, and fresh air is,

admitted above and in proportion Vto the volume of air thus lowered. By this method of ventilation the air is not only kept pure, but

the temperature of the apartment is equalized and regulated.

The purposes of my invention arc accomplished by means of a series of pipes passing through the building and connecting with the lower part of each apartment thereof, a suction-blower being provided in the cellar to eX- tract the foul air, and by means of fresh-air lues extending into the building from the roof, and.having inlets at the upper portion of the separate apartments, said inlets being supplied with valves which are actuated by the extraction of the foul air to admit an adequate supply of fresh air.

The invention is especially valuable in the winter season, since by it the heated air is gradually lowered, and is not removed until it has become impure, and the fresh air is tempered before it can be inhaled by the occupants of the building.

The exact nature and operation oftheinveir tion will be readily understood from the description hereinafter presented, reference being had to Figure l of the drawings, which represents a sectional vie-w illustrating my system of ventilation in connection with a building. Fig. 2 is an enlarged View showing the inletvalve.

A denotes the 'lues for the fresh air, which have openings at the upper part of the building, and are connected with the rooms B at their upper portions by the inlets O.

In the inlets C are provided the flap-valves a, which -are hung loosely, so as to be capable of being easily swung on their supports bythe movement of the air, as hereinbefore described.

In the lower part of the building is placed a suction-blower, D, connecting with the vertical pipe E, from the upper end of which eX- tend the branch pipes F G, passing to the upper iioor of the building.

From the vertical pipes F G proj ect branch pipes H, which pass beneath the iloors and have openings I, provided with registers J. The branch pipes H are connected by the usual elbows, &c., with the vertical pipes F G, so that one or morepipes extending through the building will be suiiicient to receive the foul air drawn from all of the rooms.

By the employment of the registers J, any one or more of the rooms may be disconnected from the Ventilating apparatus and the full force of the suction-blower D utilized in purifying the atmosphere of the remaining rooms.

It will appear obvious that when the blower D is set in operation the foul air willbe drawn from the rooms through the pipes F G and branch pipes I-I, and that fresh air will be admitted through the inlets B tosupply the place of the extracted air. If the quantity of air drawn from the room is large, the vacuum thus created will operate to open the valve a a proper distance to ad mit a corresponding supply of air, and when the air extracted by the suction blower is small the opening of the valve c will be correspondingly slight and a proportionate quantity of fresh air will be admitted. It will be seen, therefore, that I am enabled in-my system of ventilation to provide a regular and constant supply of fresh air by means which are actuated according to the amount of foul air extracted.

It will appear plain that by drawing the foul air from the lower part of the room the warm pure air at the upper part will gradually lower, and that the temperature of the room will thus be rendered uniform throughout, and the best results from the heating medium will be realized.

What claim as my invention, and desire to secure by Letters Patent, is-

An improved means for Ventilating buildings and equalizing the temperature therein, which consists of the fresh-air flue A, leading from the roof and connected with the upper part of the apartments by fines C, having automatically operating valves a a', suctionblower D, a foul-air pipe which extends upward through the building, and whose lower end connects with the suction-blower, and a 2o series of branch pipes, H, which lead from the foul-air pipe to the lower part of the separate apartments, and are provided at their mouth with registers J, substantially as set forth.

In testimonywhereof I affix my signature in 25