US1531974A - Heating device - Google Patents

Description

March 31. 1925.

F. F. REISER HEATING DEVICE] Filed May 19, 1922 attorney;

Patented Mar. 31, 1925.

UNITED STATES PAT ENT OFFICE.

HEATING DEVICE.

Application filed May 19, 1922. Serial No. 562,188.

To all whom it may concern:

Be it known that FRED F. Rnrsnn, a citizen of the United States of America, residing at Bridgewater, in the county of McCook and State of South Dakota, has invented new and useful Improvements in Heating Devices, of which the following is a specification.

The object of the invention is to provide w a simple and comparatively inexpensive but eflicient domestic heater combining the advantages of hot air and hot water heating service and adapted for a wide range of variation in dimensions andcapacity to adapt 15 it for economical use under Widely different conditions; and with this object in view the invention consists in a construction and combination of parts of which a preferred embodiment is shown in the accompanying go drawings, wherein Figure 1 is a vertical sectional view of a heater embodying the invention.

Figure 2 is a detail elevational view showing the heating coil per se.

The apparatus includes an outer shell or hot air drum enclosing a fire box 11 from which it is spaced to provide a surrounding air chamber 12 having a cold air inlet 13 at the bottom and a hot air outlet 14 at the top,

30 said fire box having a smoke or draft outlet 15; together with a heating coil 16 having inlet and outlet terminals 17 and 18 with its lower coil resting upon or located substantially in the plane of the upper edge of 85 the fire pot 19.

The coil is of volute form with its convolutions contracted in diameter from its base toward the upper end but with the tubing forming the coil increased in diameter from its inlet toward its outlet end or from the lowermost toward the uppermost convolu- The hot air shell is designed to perform the functions of a direct or pipeless heater "in that it may be arranged in direct communication with an a artment to be heated through the agency 0 a registering or grating in the floor of a room directly over the heater, while the terminals of the coil may be connected by suitable distributing pipes with radiators or the equivalents thereof in more remote ,apartments of the building, and by reason of the close association of the heating coil with the bed of fire, together with the upwardly tapered construction of the coil and more particularly the gradual expansion of the tube forming the coil'froni its lower toward its upper end, an economical utilization of the heat units produced in the fire. box is effected and a relatively rapid circulation of the water in the system of which the coil forms a part is secured.

Having described the invention, what is claimed as new and useful is A heater having a circulating coil of volute form wherein the convolutions are of gradually reduced diameter from the base toward the upper end and of which the tubing is of gradually expanded diameter from its lower inlet toward its upper outlet end.

In testimony whereof he has afiixed his signature.

FRED F. REISER.

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