US549799A

US549799A - langfield

Info

Publication number: US549799A
Authority: US
Publication date: 1895-11-12
Anticipated expiration: 1912-11-12

Description

(No Model.) I 2 Sheets-Sheet 1.

J. LANGPIELD. MEANS FOR HEATING, DRYING, AND VENTILATING.

No. 549,799. I Patented Nov. 12,- 1895. zmvmy '2% =1. F

C2 T 1 AZ My 2 SheetsSheet 2.

J. LANGFIELD. MEANS FOR HEATING, DRYING, AND VENTILATING;

(No Model.)

Patehted Nov. 12, 1895 .U H- n H H u 1 M M HHMMHHHN HHMMHMHWHM- y 1 H .H, 1 HH. 1 1 1 H l- AN OREW E.GRAHAM. PHOTOUTHQWASHINGTON. n C

UNITED STATES.

I PATENT OFFICE.

JOHN LANGFIELD, OF MANCHESTER, ENGLAND.

MEANS FOR HEATING, DRYING, AND VENTILATING.

SPECIFICATION forming part of Letters Patent No. 549,799, dated November 12, 1895.

Application filed December 27, 1893. Serial No. 494,977. (No mam To all whom it may concern:

Be it known that I, JOHN LANGFIELD, a sub ject of the Queen of Great Britain and Ireland, residing at Manchester, county of Lancaster, England, have invented Improved Means for Heating, Drying, and Ventilating, of which the following is a specification.

This invention relates to improved means for heating, drying, and ventilating rooms or other inclosed places where heat or ventilation may be required, or where goods such as porcelain, terra-cotta, and other articles or fabrics are required to be dried, especially when drafts or currents of air might be injurious to such goods.

The invention is also applicable especially to hospital wards and surgical operatingrooms, where warm still air is so necessary.

My invention will be readily understood on reference to the accompanying drawings, of which- Figure 1 is a sectional view of a single apartment fitted according to my invention; and Figs. 2, 3, and 4: are detached views of my improved air-heating stove, drawn on a larger scale.

According to my invention I employ a hotair stove, preferably as seen on the drawings, and consisting of a furnace at and vertical airpipe a, heated by the said furnace and supplied with air from the space a beneath the said furnace. The hot air passes from the pipes a to a flue a, leading directly to an inlet or grid 1) at the bottom of the room or inclosed space A and at one end or side thereof, and instead of having an exit in or near the roof or ceiling I place an outlet or grid 0 in the floor at the opposite end or side of the said room or inclosed space A, and an exitpassage 0 below the floor, leading to a vertical shaft or uptake 0 opening to the atmosphere outside the building at a height so much above the roof or top of the room or apartment A that it acts as a kind of air-siphon, and the efiect in the room will be as follows: The pure hot air admitted at one end of the apartment A through the grid 1) from the hot-air stove a or other suitable air-heating apparatus immediately expands and rises to the ceiling or roof, where it commences to accumulate, gradually taking the place of and drlving downward the cold air, as shown by the arrows,

andalldeleterious gases which are heavier than the heated atmosphere. The fresh heated airwill thus gradually fill the apartment A, like an inverted reservoir, until it reaches the exit-opening c, by which the cold or impure air Will be escaping into the passage c and uptake 0 The Warm air will then commence to escape through the said uptake c ,which, being higher than the room or apartment, will act as an inverted siphon and cause the heated" air at the lower part of the room A to be drawn out, with any heavy impure gases, without creating any draft or appreciable current, although a constant circulation of air is kept up, The room or apartment A may now be heated up to any required degree without producing any apparent draft even at the outlet opening or openings 0, although the atmosphere is constantly changed and renewed in proportion to the degree of hot air admitted at b, and a strong draft will be formed in the uptake or ventilating-shaft 0 without the aid of a fan or other mechanical appliance. By this means, also, the heat in the room A will be equal from the top to the bottom thereof.

Iprefer, as before stated, to make use of the hot-air apparatus shown on the drawings, which consists of a furnace a, around which are a number of vertical air-heating pipes or tubes a, leading from an air-space a beneath the furnace to the flue cw, leading to the inlet b to the room or apartment A. The air becoming heated in the vertical pipes or tubes a will expand and attain a considerable velocity, sufficient to carry it in the desired volume into -the room or apartment A above. The inlet 1) is considerably larger than the total area of admission of all the heating-tubes asay double the said areaand the exit 0 is rather less than the inlet b, and thus, although the air is rapidly changed, no current or draft is felt in the room A. The number of the tubes at can be increased or diminished according to the capacity of the space to be heated, and the height of the said tubes will be greater or less accordingly as a quicker or slower change of the air in the room A is required.

The smoke and products of combustion will escape from the furnace at at a low level therein through the flue a to any suitable chimney.

The heated air rising from the tubes a is too dry for ordinary living rooms, but is very suitable for chambers for drying terra-cotia and similar goods and carrying away the moisture therefrom without drafts in the said chamber. In order, therefore, to make the hot air suitable for breathing, I fix a small cistern o at one side of the furnace (see Figs. 2, 3, and i) and carry down a pipe a therefrom into the space a and up through one of the tubes a, and the water in this tube will become heated and converted into steam, which will issue in a jet from the upper end of the said pipe a and, mingling with the heated air in the flue (P will moisten the same before it enters the room A through the inlet 1).

I would remark, in conclusion that the vertical tubes a may be heated by other means than those shown on the drawings, if preferred.

I claim as my invention- The combination with a series of vertical air heating tubes, for creating a current of heated air, with a vertical flue leading directly from and in alignment with the air heating tubes to an inlet at the bottom of the chamber or other inclosed space to be heated, the said room being further provided at the opposite side and bottom thereof with an outlet, and a vertical shaft carried above the top thereof, whereby the air can escape therefrom without causing any perceptible draft, substantially as hereinbefore described.

In testimony whereof I have sign ed my name to this specification in the presence of two subscribing witnesses.

J OIIN LANGFIELD.

\Vitnesses:

CHARLES A. DAVIES, JNo. HUGHES.