US 320635 A
Description (OCR text may contain errors)
G. A. DAUDT.
v PIPE COUPLING. No. 320,635. 7 Patented June 23, 1885.
UNITED STATES PATENT ()rricn.
GEORGE A. DAUDT, OF JERSEY CITY, NE\V JERSEY.
SPECIFICATION forming part of Letters Patent No. 320,635, dated June 23, 1885.
Application filed April 7, 1883. (No model.) I
To all whom it may concern:
Be it known that I, GEORGE A. DAUDT, of Jersey City, in the county of Hudson and State of New Jersey, have invented a new and useful Improvement in Pipe Couplings, of which the following is a specification.
My improved coupling is more particularly intended for connecting the pipes or tubes of surfacecomlensers with their tube-plates or tube-sheets, but may be employed in feedwater heaters, or in coolers for various purposes.
An important object of my invention is to provide a coupling for the tubes 01" a condenser, heater, or cooler, which will admit of arranging the tubes in clusters or groups near together, and of forming a single connection for each cluster or group of tubes, of small size as compared with the size of the cluster or group; and a further object of the invention is to provide for the free drainage of all water of condensation from the tubes, so that they will not remain partly filled with dead-water while the condenser or cooler is in use.
The invention consists in a coupling or con nection composed of a screw-threaded tubular portion provided with a shoulder and nut, whereby it may be secured in a tube-sheet or tube-plate, and a number of branches extending from the screw threaded portion, the branches which are lowermost being approximately in line horizontally with the bottom of the screw-threaded portion, and the branches which are uppermost being offset upward from the top of said screw-threaded portion.
The invention also consists in a coupling or connection composed of a tubular screwthreaded portion provided with an inwardlybeveled shoulder and a nut,whereby it may be secured in a tube sheet or plate, and a num ber of branches extending from such screwthreaded portion, as more fully hereinafter described.
In the accompanying drawings, Figure 1 is a sectional view of a portion of a condenser embodying my invention. Fig. 2 is a sectional view of a portion of the tubesheet and one of the couplings on a larger scale. Fig. 3 is an end view of the coupling shown in Fig. 2; and Fig. 4 is a sectional view of a tubesheet and acoupling of slightly modified form.
Similar letters of reference designate corresponding parts in all the figures.
A designates the shell or casing of the condenser, into which cooling water is to bede- I livered by a'pipe, (not here shown,) and from which the water is delivered by a'pipe, a.
The shell or casing A contains U-shaped tubes B. The upper branches of these tubes lead from a chamber, 1), and constitute direct tubes,while the lower branches lead to a chamher, 0, and constitute return-tubes. Steam enters the chamber 1) by a pipe, d, and after passing through the tubes B escapes into the chamber 0, and so on through other tubes and chambers. (Not here shown.) The tubes B may be supported at their ends by a steadiment, 0. As here shown, the tubes are arranged in groups or clusters of four, and each four tubes are connected with the tube sheet or plate G by a coupling, D, embodying my in vent-ion. Each coupling D consists of a castmetal casing provided with four branches, f f
ff, which converge into a single branch extension or tubular portion, g, which passes through the plate 0. The branch or extension 9 is externally screw-threaded, and is furnished with a collar or shoulder, g, and a nut, h. A packing-ring, 9*, is placed against the shoulder, and the nut h is screwed up to form a tightjoint. The face of the collar or shoulder g is here represented as beveled inward, as shown in Fig. 2, and the packingring /flwhich is of corresponding shape, will be securely held and prevented from spreading when the nut h is screwed up. The nut 71, as here shown, is provided with lugs or cars It, projecting axially from it, and when thus made the nut may be turned by means of a notched tube where the couplings are arranged so close together that the nuts cannot be conveniently turned with a wrench.
The tubes 13 may be connected with the branches f f in any suitable manner. I may, for example, bore out the branches, as shown at t, to receive the tubes and solder, or sweat the tubes in the branches to form tightjoints. The branches f, which are lowermost, are approximately in line horizontally with the bottom of the branch or portion 5 but the branches f, which are uppermost, are offset above the top of said portion 9. The tubes will then drain themselves clear of water, and there will no water of condensation remain therein.
Obviously the couplings might have any other number of branches for tubes than four.
In Fig. 4 I have represented a coupling which is employed only to establish communication between a number of tubes, and not to afford an outlet from or an inlet to said tubes. It differs from the coupling before described only in the arrangement of the branches f and in having the extension 9 internally screwthreaded and closed by a screw-plug j.
What I claim as my invention, and desire to secure by Letters Patent, is
1. A coupling or connection composed of a screw-threaded portion, 51, provided with a I shoulder and nut, whereby it may be secured in a tube-plate or tube-sheet, and a number of branches, the lower branches, f, being ap- 2o proximately in line horizontally with the bottom of the portion and the upper branches, f, being offset above said portion substantially as herein described.
2. The coupling or connection comprising 25