US1309000A - An d william b - Google Patents

Description

H. TOWNSEND AND w. B. DIXON HOT AIR HEATER. APPLICATION HLED SEPT-4, I917.

v1,309,000. Patented July 8, 1919.

I INvE wRs Jidrl-rl ZZZI/hsend Will/ chm B.- Dixon UNITED STATES PATENT OFFICE.

HERBERT TOWNSEND, F GLOUCESTER, NEW JERSEY, AND WILLIAM 'B. DIXON, 0F 7 1 NICETOWN, PENNSYLVANIA.

HOT-AIR HEATER;

Application filed. September 4, 1917.

To all whom it may concern Be it known that we, HERBERT TOWNSEND,

a subject of the King of England, residing .vented new and useful Improvements in Hot-Air Heaters, of which thefollowing is a specification.

Our invention relates to new and useful improvements in hot air heaters, and has for its object to provide an exceedingly simple and efiective device of this character whereby the air is caused to circulate within the heater in a clrcuitous way, so as to be raised to a very hi 'h temperature by absorbing the heat at di erent points, which is thrown oif from the burner.

A still further object of the invention is to provide a heater of the class described having an outlet opening, above which is situated a hood or canopy for spreading the hot air and causing the same to flow down ward as it leaves the hood.

With these ends in view, this invention consists in the details of construction and combination of elements hereinafter set forth and then specifically designated by the claim.

In order that those skilled in the art to which this invention appertains may understand how to make and use the same, we will describe its construction in detail, referring by numerals to the accompanying drawing forming a part of this application, in which- The figure is a view of the heater in vertical section.

In carrying out our invention as here embodied 2 represents the outer shell consisting of a bottom 3 having a central opening 4, side walls 5 and a top 6. Extending from the bottom wall 3 to a point some distance from the top 6, and surrounding the opening 4 is an upwardly projecting stack 7, the same being spaced some distance from the side walls 5.

Within the heater is a partition 8 which is located between the outer walls 5 and the stack 7, the same being spaced from both the stack and said side walls and extending from the bottom 3 to a point adjacent the top 6 and intermediate the space between Specification of Letters Patent. Patented July 8,

Serial N0. 189,482.

the top of the stack 7 and the top wall 6. The walls of the partition are provided with openings 10 at the bottom thereof. The space between the partition walls 8 at the top is covered by a top 11 which is spaced from the top end of the stack 7 and the top wall 6 of the heater. v

The top wall 6 has an outlet opening 12 which is surrounded by an upwardly projectingflange 13.

The construction of the heaterabove de-- scribed produces a circuitous passageway consisting of a chamber 14 within the stack 7, the chamber 15-, a portion of whichlies above the stack and a portion between the walls of the stack and the partition 8, the

chamber 16 between the partition walls 8 and the outer walls 5 of the shell and the chamber 17 between the top 11 and the top wall 6, the latter communicating with the outlet opening 12.

The heater is provided with suitable legs or supports 18 and a burner 19. The burner here shown represents an ordinary gas burner, but it is to be remembered that any kind of fuel may be utilized for producing the required heat, so that this burner may be changed where necessary according to the fuel, which is used.

A hood or canopy 21 is placed over the outlet, and said hood has a central flat portion 22 and an outwardly and downwardly projecting flange 23, so that the hot air is suing from the heater will-be given a downward motion as it passes from beneath the hood.

In order that the hood may be properly supported above the heater we provide the same with a depending collar 24 adapted to seat over the flange 13, said collar being of greater length or height than the flange 13. and having openings 25 therein located above the flange 13, when the hood is in place.

In practice the air passing into the heater will pass over the flame of the burner, since said burner is located directly beneath the the partition walls 8 and the walls of the stack 7 then from the bottom 3 as it passes through the openings 10 from the chamber to the chamber 16; then from the partition Walls 8 and the outer walls 5, as it passes upward through the chamber 16 and again from the top 11 as well as any heat that may be contained in the top wall 6 as it passes through the chamber 17 to the outlet 12 from where it is thrown out into the room in a slightly downward direction by the hood 23.

It has been found that as the air passes through the circuitous passageway formed by the different chambers, the same is sufficiently agitated or broken up to absorb a great amount of heat, and because of the large heating area provided by the construction here shown, the air is raised to a much higher temperature thanheaters of ordinary construction, and it has also been found that because of the large heating surface that the odor ordinarily thrown off by gas burners is almost entirely eliminated.

Of course we do not wish to be limited to the exact details of construction here shown, as these may be varied within the limits of the appended claim without departing from the spirit of our invention.

Having thus fully described our invention, what we claim as new and useful, is-

A hot air heater having a circuitous passageway and provided with an outlet opening, a flange surrounding said outlet opening, a hood having a central flat portion and a downwardly and outwardly projecting flange and a depending collar carried by the hood and projecting from the central flat portion thereof and adapted to be placed over the flange, said collar being of greater height than said flange and having openings therein located above the upper edge of the flange when the collar is placed thereon.

In testimony whereof, We have hereunto aflixed our signatures.

HERBERT TOWNSEND. WILLIAM B. DIXON.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. 0.

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