US798507A

US798507A - Water-seal trap.

Info

Publication number: US798507A
Authority: US
Inventors: George A Hally
Original assignee: Individual
Current assignee: Individual
Priority date: 1905-05-15
Filing date: 1905-05-15
Publication date: 1905-08-29
Anticipated expiration: 1922-08-29

Description

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GEORGE A. HALLY, OF DENVER, COLORADO.

WATER-SEAL TRAP.

N0. 798.507. Specification of Letters Patent. Patented Aug. 29, 1905.

Application filed May 15, 1905. Serial No. 260,405.

Having briefly outlined my improved construction, I will proceed to describe the same in detail, reference being made to the accompanying drawings, in which is illustrated an embodiment thereof.

In the drawings, Figure 1 is a side elevation of a trap equipped with my improvements. Fig. 2 is a vertical longitudinal section taken through the same.

device. Fig. 4 is a fragmentary sectional To (all Inherit il; 777/(I/I/ (lo/warn Be it known thatLGnoReE A. HALLY, a citizen of the United States, residing in the city and county of Denver and State of Colorado, have invented certain new and useful Improvements in ater-Seal Traps; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the figures of reference marked thereon,which form a part of this specification.

My invention relates to improvements in traps of the character whereby a water seal is provided to prevent the passage of air or gases.

The object of my present improvement is to do away with washers for use in connection with traps provided with closures in order to form a tight joint.

My further object is to place the threads of the closure and the ferrule or ring applied to the top of the trap beyond the reach of the gases in the pipe system with which the trap is connected.

The body of traps of this character is usually composed of lead, a brass ring being applied to the top of the lead trap and provided Fig. 3 is a top view of the view similar to Fig. 2, the parts, however, being shown on a larger scale.

In traps of ordinary construction the brass ring is placed inside of the top of the lead trap, and the ring is secured to the lead by soldering on the inside. This gives the gas access to the solder, resulting in the eating away of the latter, whereby the ring soon becomes loose. An additional advantage of my construction over other traps is that the solder is all on the outside,where the gas cannot possibly come in contact therewith.

The same reference characters indicate the same parts in all the views.

Let the numeral 5 designate the body of the trap, which, as heretofore indicated, is composed of lead, the same being bent or spun inwardly at the top to form a shoulder 6 and then carried upwardly inside of the brass ring with threads engaged by the threads of the 7, forming a beveled surface, as shown at 8, trap-screw, the latter being also usually made the lead being finally bent or spun over the of brass. In devices of this character in com-- upper edge of the ring 7, as shown at 9. The

screw-threads are formed on the ring, as shown at 10.

The closure 12 is provided with a depend ing flange 13, interiorly threaded to engage the threads of the ring. The closure is also provided with a depending auxiliary flange 14, formed concentric with the screw-flange and having its outer surface beveled to cooperate with the beveled portion 8 of the lead to form a fluid-tight joint as the closure is screwed into place. There is a narrow space between the two flanges 13 and 14C to receive the ring 7 and the lead applied thereto, as heretofore explained. This lead is suflioicntly soft to form a tight joint when engaged by the flange 14: of the closure, the same being screwed tightly down against the lead seat. Below the threaded portion 10 of the ring 7 the ring is unthreaded or plain, as shown at 15, permitting the use of solder in order to more securely fasten the ring in place. To facilitate this the plain portion is made slightly mon use the screw-threads are formed on the the outside of ring or ferrule at the top of the cap in such a manner that after the cap-screw is applied the gases will have access to the threads, whereby these parts are so corroded that it is very diiiicult to remove the trap-screw without destroying the trap. In my improved construction the lead forming the body of the trap is bent or spun inwardly, forming a shoulder below the brass ring, and then upwardly on the inside of the ring, and finally over the upper edge thereof, the part of the lead on the inside of the ring being beveled to cooperate with a depending circumferential flange, of the trap-screw to form a tight joint. In this case the screw threads are formed on the outside of the brass ring, and the depending threaded flange 0f.the closure engages these threads, thus completely removing the threads from access of the gases within the trap or system with which the latter is connected.

smaller in diameter than the threaded part of the ring, whereby a better opportunity is given for applying the solder.

Having thus described my invention, what I claim is 1. The combination of a trap composed of soft metal, a ring applied to the trap, the metal covering the ring on the inside of the trap, and a closure having athreaded portion engaging the ring exteriorly, and provided with an auxiliary flange engaging the soft metal on the inside of the ring and forming a tight joint.

2. The combination with a trap-body composed of lead, and a ring applied to the top of the trap, the lead of the trap being carried inwardly below the ring, upwardly on the inside of the ring and extending over the upper edge thereof, and a closure having a depending threaded flange, the outer surface of the ring being threaded to receive the threads of the flange of the closure, the latter beingalso provided with a depending auxiliary flange of smaller diameter than the screw-flange and engaging the lead inside of the ring whereby a tight joint is formec.

3. In a device of the class described, the combination of a receptacle composed of soft metal, a ring of harder metal applied to the top of the soft-metal receptacle, the soft metal being bent or spun inwardly to form a shoulder upon which the ring rests, the soft metal being also carried upwardly on the inside of the ring which is beveled ring being exteriorly threaded, a portion of its width, and a closure having a threaded flange engaging the threads of the ring and a plain flange engaging the soft metal on the inner surface of the ring.

4. In a device of the class described, the combination of a water-seal trap, and a ring of harder metal applied to the upper part of the trap, the soft metal of the trap being bent or spun inwardly to form a shoulder which the lower edge of the ring engages, the inner surface of the ring being beveled and its outer surface threaded, the soft metal of the trap to form a seat, the

being applied to the inner surface of the ring and extending over its upper edge, the trap havinga threaded flange engaging the threads of the ring, and a plain flange exteriorly beveled to engage the soft metal on the inner surface of the ring, substantially as described.

5. In a device of the class described, the combination of a lead trap, a closure and a ring, the upper part of the trap beingspun inwardly forming a shoulder for the ring, carried upwardly on the inner surface of the ring and overlapping the upper edge of the latter, the ring being exteriorly threaded and having a plain part below the thread to permit the use of solder exteriorly, the closure having a depending threaded flange engaging the threads of the ring, and a depending plain flange of less diameter engaging the soft metal on the inner surface of the ring.

6. A soft-metal trap having an exteriorlythreaded ring of harder metal applied thereto, the lead covering the inner surface of the ring, and a closure having two centric flanges, the larger flange being threaded to engage the ring-threads, the smaller flange engaging the soft metal on the inside of the ring.

7. A lead trap having a brass ring surrou nding the lead at the opening, the ring being exteriorly threaded, and a closure having separated flanges passing on opposite sides of the trap around the opening, the outer flange being threaded.

8. A lead trap having an exteriorly-threaded strengthening-ring surrounding the lead and held in place thereon around the opening, and a closure having plain and threaded flanges of unequal diameter, the larger flange engaging the exterior threads formed on the ring, and the smaller flange engaging the lead on the inside of the ring.

In testimony whereof I aiflx my signature in presence of two witnesses.

GEORGE A. HALLY.

Witnesses: DENA NELSON, A. J. OBRIEN.

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