US1447550A - Boiler appliance - Google Patents

Description

Marrffi, 1923.

H. E. HEIM BOILER APPLIANCE Filed Dpc. 19, 1921 INVEN TOR.

Patented lifter. h, 123.

art ste BOILER APPLIANCE.

, Application filed December 19, 1921. Serial Ito. 523,408.

T all whom. it may concern: w

1 Be it known that I, HnNRY Earn HEIM. a citizen of the United States, residing at Portland, in the county of Multnomah and State of Uregon, have invented a new and useful Boiler Appliance, otwhich the following is a specification.

-My invention relates to improvements in boiler appliances, particularly to oulet fittings for hot water boilers, in which a tube reaches from the fitting into the hot water.

In the customary type of hot water boilers the cold water is sent from the bottom of theboiler througha heating coil of some description and then returned to the topof the boiler. Since the service pipe also issues trom the top, it follows that the first user is enabled to draw of? the hottest water, leaving an insuificient supply for the second user, unless the landlord or head of the family goes to the expense otheating the coils anew. The objects otmy invention are to prevent the boiler from bein robbed of its hottest water, but rather to turnish a large quantity of tepid water from a comparatively small amount of hot water.

Another object is to design a fitting which is complete in itself, that is, which avoids the work and inconvenience of combining a varying number of crosses, Ts, elbows and nipples at acertain 'point in the installation.

Further objects and advantages are to .be found in the construction and arrangement of parts as will be described hereinafter.

ll attain these objects with the mechanism illustrated in the accompanying drawing,in whicha Fig. 1 is a side elevation of a fitting with the hot water supply entering the boiler through the fitting. 1

Fig. 2, is a vertical cross section through Fi 1.

l ig. 3 is a modified form of the fitting used in cases where the hot water enters the boiler otherwise than through the fitting.

Fig. 4 is a perspective view of a smooth tube.

Fig. 5 is a perspective view of a spirally corrugated tube on a somewhat smaller scale. c

Similar numerals refer to similar parts throughout the several views.

This invention is intended as animprovement on a fitting for which a patent application Was filed by me on October 24, 1921,

complished, and, though I have shown the under the title Boiler appliance, and Serial Number 509,860.

The body portion of the fitting is designated by the numeral 1. The threaded end 2 is screwed into the boiler. Connection with the service pipe 3 is accomplished by means of the union i and the gasket 5. The upturned elbow 6 for the relief valve forms an integral part of the body portion. It the fitting is intended to serve as a hot water inlet also, proper provisions for connection with the union 7 and the gasket 8 are made the same as in the case of the service pipe 3 The inlet may be opposite the elbow 6 or at right angles thereto.

In all cases, however, a tube 9 reaches from the fitting a short distance into the water. This tube may be smooth or spirally corrugated. Formerly the tube was screwed into the fitting from the bottom, so that repair to the tube in case of corrosion necessitated an unscrewing of the entire fitting. In my present invention the tube is provided witha threaded shoulder 10 and a slot 11 in the upper tube walls, so that a re newal may be efiected fromthe top with a screw driver after the service pipe 3 has been disconnected. The threaded shoulder 10 as well as the corresponding female thread in the fitting are slightly tapered so that the tube cannot get lost by being screwed too far. A smalhole 12 establishes communication between the inside and the outside of the tube.

With the introduction of my tube 9, the hot water at the top of the boiler cannot be withdrawn, but rather serves to impart a gentle warmth to the water which flows through the tube and is drawn from the cooler zones at the bottom. The small quantity of hot water entering through the hole 12 merely aids in warming the stream of water flowing inside the tube without diminishing appreciably the quantity of hot water remaining at the outside of the tube.

My invention also avoids watenhammering in the service pipe, as any steam at the outside of the tube and entering the inside through the small hole would be quickly condensed to water and thereby become harmless.

Having thus described my invention it will be seen that my objects have been acpreferred form of construction, I reserve to myself the right to make minor changes,

providing 1 do not violate the spirit and I princlple of my invention.

1' claim: I 1. In a boiler ZLPPllADQQ tlN-E combination of a fitting comprising a body portion having; a vertical canal, said canal being constricted the upper end, a tube screwed note the constricted portion of the canal and extending below the lower end of the fitting, said tube having a threaded shoulder at the upper end, a slot across'the upper edges, and a hole in the well below the threaded shoulder.

2. in a boiler applian'i-e the combination ofa fitting comprising a body portion havieezsso cured in the vertical canal and extending below the lower end of the fitting, a tapering, threaded shoulder at the upper end of the tube said, tube having a small hole below the threaded shoulder and being of smaller diameter than the vertical canal in the body portion.

3. In a boiler-appliance, the combination of a fitting comprising a body portion having a vertical canal, said canal being constricted and threaded at the upper end a tube having a threaded shoulderand a hole in the Wall below the shoulder, said tube being capable of insertion from the top of the fitting, a relief elboW atthe side of the body portion and a hot Wfiilfili inlet; at the side oiflhe body portion, said hot Water inlet, lorining an lntegral part of the body pen tion and being adapted to connect with a heating pipe by means of a union and gasket. Signed by me at Portland, Oregon, this 14th day of December, 1921.

HENRY EARL HEI'M.

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