US1321235A - mccann - Google Patents

Description

J. J. McCANN.

BOILER COUPLING.

APPLICATION FILED FEB. I. 1919.

Patented Nov. 11, 1919.

2 SHEETSSHEET I.

g; yea-aw 5 imhnly 4 x L516 WITNESSES a 'IfiH EIVTOR A TTOR/VEVS J. J McCANN.

BOILER COUPLING.

APPLICATION FILED FEB. I. 1919.

Patented Nov. 11, 1919.

2 SHEETS-SHEEI 2.

f Hark 19767? ATTORNEYS WITNESSES i 6 JOSEPH J. MOGANN, 0E CINCINNATI, OHIO.

lacuna-COUPLING.

Specification of Letters Eatent. I Patented NOV. 11, 1919.

Application filed February'l, 1919. Serial-No. 274,401.

To all whom it may concern:

Be it known that I, JOSEPH J. MCCANN, a citizen of the United States, and a resident of Cincinnati, in the county of Hamilton and State of Ohio, have invented new and useful Improvements in Boiler-Couplings, of which the following is a specificatiom My invention is an improvement in boiler couplings, and has for its object to provide a simple and elncient coupling of the character specified.

In the drawings:

Figure 1 is a perspective view of a boiler, provided with the improved coupling, a part of the boiler bein broken away;

Fig. 2 is an en arged vertical section of the coupling;

Fig. 3 is a section on the line 33 of Fig. 2;

ig. 4.- is a perspective view of the coupling applied to a boilersupplied with overhead pipes;

Fig. 5 is an enlarged section of the top of the coupling, showing a modified arrangement;

F i 6 is a section on the line 66 of Fig. 5, 100 'ngin the direction of the arrow adjacent the line;

Fig. 7 .is a section on the line 7-7 of Fig. 4, looking in the direction of the arrows adjacent the line.

In the embodiment of the invention shown in Figs. 1 to 3, the improvement is shown in connection with a boiler 1 supported by the usual pedestal 2. The hot water delivery pipe 3 is connected'with a T 4 at the top of the boiler, the T being connected with the boiler and having its lateral branch connected by a pipe 5 with a water heater 6. At the lower end'of the boiler a pipe 7 leads to the range, and a pipe 8 connects this ipe 7-with the lower end of the heater 6. he intake pipe 9 for the cold water and the pipe 7 open into a common coupling, which is a casting 10 having at its bottom an internally and externally threaded-nipple 11 for connection with the pipe 7, and having intermediate its ends a threaded portion 12 for connection with the nipple 13 of the boiler. This coupling has two longitudinally extending passages, a passage 14 .which places the pipe 7 into communication with the boiler, and a passage 15 which places the pipe 9 into communication with the boiler. The'cas'tingjhas a lateral inter-.v

pallv and externally threaded nipple 16 for connecting the passage 15 with the pipe 9, and the passage 14 has its commencement at the upper end thereof flush with the bottom of the boiler, as indicated in Fig. 2.

The coupling has a polygonal portion 17 just above the nipple 16 for engagement by a wrench to turn the coupling, and the said coupling is provided at its top with an externally threaded portion 18 which is engaged by a cap 19. This cap 19 has lateral openings 20 intermediate its ends, and avalve 21 is mounted for movement in the cap, the said cap constituting,-in efiect, a valve casing. The cap has a vent 22 at its top, to permit the easy movement of the valve, and the valve cooperates with the upper end of the couplin as a seat.

This valve normally coses the inlet, but it may be easily lifted under pressure to permit the entrance of water to the 'boiler. The valve, however, absolutely prevents re gurgitation from the Boiler into the water main.

In the embodiment of the invention shown in Figs. 4: to 7, inclusive, the boiler 23 is supported by the pedestal 24, and the outlet 25 for the hot water supply 26 is at the top. The cold water from the cold water supply 27 enters the boiler by way of a pipe opening flush with the bottom of the boiler and the other opening .at the top of the 28 which opens into the coupling 29 at the botcoupling in the same manner as the passage 15. The only difference between the coupling shown in Fig. 4 and that shown in Fig. 1 is in the valve construction at the top. This construction comprises a cap 30 which is threaded on to the upper end of the coupling, and the said ca has lateral passages 31 for permitting the ow of the water from;

the coupling into the boiler.

A valve 32 cooperates with the upper end of the coupling, and this valve has afstem.

33 which is movable in a guide extension. 34 of the cap. A coil spring 35 normally acts to seat the valve, is adapted to yield under the water pres sure to permit the entrance of the water from the main.

It will be noticed from an inspection of Fig. 2 that the cap '19 has an outwardly extending marginal flange 36 just above the lateral passages, and the cap 30 has a similar petticoat 37 at the same point. These Pettiand the said springcoats deflect the water outwardl and downwardly so that as it enters the boiler it cannot pass to the top of the boiler, but is driven toward the bottom. By the provision of the flanges which are, in effect, deflectors, the entering water is forced against the bottom of the boiler, thus flushing the same, and preventing the deposit of sediment which would tend to choke the outlet. The mechanism at the top of the coupling is a controller and guard, for controlling the inflow of the water and for guarding against regurgitation.

I claim:

1. A coupling for connecting boilers to intake and discharge pipes and adapted to be arranged in an opening in the bottom of the boiler and to extend above and below the bottom of the boiler, said coupling having two longitudinally extending passages, one of the passages opening at the bottom of the coupling and adapted for connection with the discharge pipe and the otheropening laterally near the bottom and adapted for connection with the intake, said last named passage opening at the top of the coupling, and .the other of the said passages opening at the level of the bottom of the boiler, a cap having threaded engagement with the top of the coupling, the cap having oppositely arranged ports, and a valve in the cap normally closing the passage and adapted to be lifted by the water pressure, said cap having means for defiectingthe entering water outwardlyand downwardly, and a spring normally holding the valve closed.

2. A couplin for connecting boilers to intake and disc arge pipes and adapted to be arranged in an opening in the bottom of the boiler and to extend above and below the bottom of the boiler, said coupling having'two longitudinally extending passages, one of the passages opening at the bottom of the coup ing and adapted for connection with the discharge pipe, and the other opening laterally near the bottom and adapted for connection with the intake, said last named passage opening at the top of the coupling, and the other of the said passages opening at 'the'level of the bottom of the boiler, a cap having threaded enga ement with the top of the coupling, the cap aving oppositely arranged ports, and a valve 1n the cap normally closing the passage and adapted to be lifted by the water pressure, said cap having means for deflecting the entering water outwardly and downwardly.

3. A coupling for connecting boilers to intake and discharge pipes and adapted to be arranged in an opening in the bottom of the boiler and to extend above and below the bottom of the boiler, said coupling having two longitudinally extending passages, one of the passages openin at the bottom of the coupling and adapts. for connection with the discharge pipe, and the other opening laterally near the bottom and adapted for connection with the intake, said last named passage opening at the top of the coupling, and the other of the said passages opening at the level of the boiler, a cap having threaded engagement with the top of the coupling, the cap, having oppositely arranged ports, and a valve in the cap normally closing the passage and adapted to be lifted by the water pressuire.

JOSEPH JHMGCANN.

Witnesses:

Wmmm H. FENNELL, W'Amnn M. Mmmn.

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