Compensating pipe-joint.

Application filed July 31,1903. Serial No. 167,706. (No model.)

To all whom it may concern:

Be it known that I, Ludwig Hochstein, a subject of the Emperor of Germany, residing at Dietrichsdorf, near Kiel, in the Empire of 5 Germany, have invented certain new and useful Improvements in Compensating PipeJoints, of which the following is a full, clear, and exact description.

This invention relates to that class of balio anced compensation devices for pipe-conduits in which the balance is obtained by the use of two stuffing-boxes situated at either end of the compensating pipe; and the object of the invention is to dispense with the slotted com15 pensation-pipe now in use, as well as the casing which forms a water-space about the same. At the same time it is intended to prevent the eddying of the steam, water, or air which occurs in the circular casing, as by the 20 present invention the steam, &c., is given an impetus which is directly in line with the new direction to be given to the stream.

A further object of the present invention is to provide a device which shall be simple 25 in construction, durable in use, and of which the parts are always accessible for inspection and repairs.

With these and other objects and advantages in view my invention consists in the 30 novel construction and combinations of parts to be hereinafter described, and finally pointed out in the claims.

In the drawings accompanying the specification, in which similar characters of refer35 ence designate identical parts throughout the several views, Figure 1 is a horizontal crosssection illustrative of a preferred form of my invention. Fig. 2 is a side elevation of a slightly-different arrangement. Figs. 3 and 4° 4 are elevations of forms of the invention which are intended for approximately rectilinear pipe-conduits. Fig. 5 is an elevation of a modification in which the compensationpipe takes the form of a valve. Figs. 6 and 45 7 are a plan and elevation, respectively,of the application of my device in the forms shown in Figs. 1 and 5, respectively.

In the drawings, c designates a compensation-pipe, which is secured at either end to 50 suitable stuffing-boxes a /. Intermediate of these stuffing-boxes the branch pipes of the compensation-pipe are arranged inclined in the direction of the entering fluid. The two stuffing-boxes, which are of equal diameter, are connected by ties 1) for the purpose of re- 5 5 lieving the pressure on the pipe, said ties comprising bolts secured between suitable perforated collars on said stuffing-boxes. For taking up the expansion it is immaterial whether the compensation-pipe moves in the 60 fixed stuffing-boxes or the stuffing-boxes connected by the ties slide over the fixed compensation-pipe, as shown in Fig. 2. In some cases it is preferable to have the compensationpipe and the two stuffing-boxes connected by 65 the ties move simultaneously with relation to one another, as shown in Figs. 2 and 4.

In Fig. 2 the compensation-pipe is provided with a collar—that is to say, it is fixed—while the two stuffing-boxes a a! slide over the 7° same. The stuffing-box a' may be extended in the form of a closed pipe.

As shown in Figs. 3 and 4, the compensation-pipe c and the stuffing-boxes a a' are movable in their relation to each other. 75

In some cases a valve is placed in the compensation-pipe c, as shown in Fig. 5.

As has been stated, Fig. 6 shows the application of the form shown in Fig. 1, the fluid being distributed equally between two re- 80 ceivers. In Fig. 7 is shown the application of the device disclosed in Fig. 5. In this case the stuffing-box a acts as a valve f. The part of the stuffing-box d extended as a pipeconduit is, on the other hand, closed near the 85 valve g. The fixed.point of the pipe-conduit is near the valve h. The valves f g h are directly attached to the boilers, as shown.