US52575A - Improved metallic packing for stuffing-boxes - Google Patents

Description

UNrrnn A STATES PATE-Nr Ormea v O. F. JAUBIET, OF AURORA,l ILLINOIS. i

IMPR-OVED METALLIC PACKING FOR STUFFING-BOXES.

Specifica-tion forming part of Letters PatentNo. 52,575, dated February 13, 1866.

` Cylinders; and l do hereby declare that the t'ollowin g is a full, clear, and exact description ot' the same,-reference being had to the accompanying drawings, forming part of this speciiication, in which- Figure l is a longitudinal section of an improved stufng-box as constructed for application to the piston-rod of a steam-cylinder. Fig. 2 is a similar section, butin a plane which is different from that in which Fig. 1 is drawn.

Fig. 3 is an end view of the stuffing-box, the piston-rod being shown as sectioned transversely. Figs. 4, 5, 6, 7, 8, and 9 show details of the improved stuffing-box both in section and in elevation.

Similar letters of reference in the several figures indicate corresponding parts.

My invention relates to a stuffing-box which employs metal packing and has such packing compressed upon the piston-rod by means of steam, pneumatic, or hydraulic pressure, and as an improvement in such stufting-boxes my invention consists, first, in a follower which -is free to turn on the piston-rod, and is constructed with a concave cove or chamber in its rear end, said cove being in communication with the steampassages of the piston-cylinder, and also with the passages which conduct the steam into the chamber outside ot' the packing; second, in a perforated ring which has a concave cove or chamber in its front face, said cove beingin communication with all the steampassages ot the stuffing-box, and with the perforations in itself; third, in the arrange;-A

ment of cylindersprings applied between the follower and the packing or between the follower and the ring which is interposed between the packing and the follower; fourth, in a combination of the packing, springs, and looselyitted follower, or a combination of these partsl and the rin g-plate with a stuflngbox`for a piston or other rod.

To enable others skilled in the art to make and use my invention, I will proceed to describe its construction and operation.

A is the gland, bored to fit the rod B in the together longitudinally.

structed with a continuous shoulder, d, .as

Vpassages h bored through it, as at la.

chamber.

usual manner, and counterbored cylind'rically at its inner end large enough tor the reception of the packing-rings a b and to form a narrow chamber, c, around the exterior of' the rings for the entrance and circulation of steam or other fluid. The rings a b are made in segments, and the segments ot' one, a, are arranged to overlap the joints of the segments ot' the other, b, and to enable the two ringsto hold The ring ct is conshown 1n the drawings.

The outer packing-ring'is groovedI at c, and a dat split ring, j', is set down in said groove for the purpose of holding the segments together and around the rod B in such manner as to prevent them from being displaced when there is no pressure of steam or other fluid in the chamber c, but not so as to prevent them being compressed still closer around said rod.

Other practical and known modes of constructing the packing may be adopted without altering the character of my invention.

The packing-rings are applied to the rod, as shown. 'C is a ring-plate, with its front corner cut away, as shown at g, and with steam- This ring-plate is slipped on the rod B, so that that face of it which has its corner cut away shall come against the rear end ofthe packing, as shown.

By fthis construction of ring an enlarged space for steam to circulate in its passage into the chamber c is formed, and the' steam is thereby more certainly conducted into said The ring-plate is of the same idiameter as the bore ofthe gland A, and its diameter, whereit bears on the packing, is nearly as greatas thatof the outer packing-ring. rI his being so the steam is in a great measure kept from getting into any other place than the y chamber c. This is very important, as practical engineers are well aware, because, if the steam has a chance to get between the segments of the two rings, there will be a very imperfect compression of the split rings upon the piston-rod.

D is the part usually termed a i'ollowerJ It is of cylinder form, and bored through from end to end, so as to slip on the piston'rod B. Its rear end is constructed with a concave cove or chamber, s, and through it from end to end between its central bore and itsl circumferencea series ot steam-passages, i t', are formed, as shown. These passages leadfrom the cove or chamber, s. There may be a similar cove, j, in the front end of the follower. ln the front end of the follower, between the steam-passages, sockets are bored, and into these sockets spiral springs K K are fitted, so as to project out beyond the front end of the follower, as shown. The follower, just outside of the margin of the steam-passages tand on its front end, is constructed with an angular shoulder, which corresponds with a shoulder formed on the rear end of thc gland. This follower, when on the piston-rod and forced home, makes a joint with the gland, and itssprings K K press against the ring-plate, and said plate, in turn, presses against the packing and causes it to t snugly aga-inst the shoulder or base of the chamber in said gland, asv illustrated in Figs. l and 2 at Z. y

The stuffing-box E is constructed so as to; partly inclose the gland, and to wholly inclose,` the follower and packing, as represented. Two; screw-bolts, m m, and two nuts, n n, answerg for confining all the parts together, as shown.; Through the faceplate ol' the stufngbox which adjoins the steam-cylinder steam-pas sages q q, corresponding to passages in the cyl-j inder-head, are formed. These passages are?` made to lead into the cover or chamber s, asi represented. It is very important to providel the cove or chamber when the follower is leftl free to turn, for if it is not provided there isi liability of thc passages getting out of register and the steam not being freely admittedi to the packing ot' the stuffing-box. To have` the follower, ring, and packing all free to turn@y is important, as much ot' theliability of thesel parts wearin g in ridges or into an ellipticall form is overcome, because these parts, by be ing freed, will in the course of time and fromi dil'erent causes turn and gradually present' new wearing-surfaces at those points where; the greatest weight or strain comes. i

The steam may be admitted from the cylin-ii der through a passage around the piston-rodi` It is obvious that my improved construction of stufng-box is of very extended use, andi may as well be applied to valve-stems, throtf ting-box such parts as may be deemed nec-l essaryshould be constructed so as to imite with a ground-joint. g

Operation The steam, en tering the stufn gbox, as indica-ted by the red arrows, takes its course on nearly a straight line into the chamber c, where its pressure acts on the outer periphery of the ring-packing and causes it to hug the rod tightly and prevent any escape ot' steam between them, while the pressure ot' the springs as Well as the steam so confines the packing and the ring-plate, which closes the joints of the packing together, that verylittle Steam can pass between the rings or the rings and the plate C, nor between the rings and the base L of the connterbore of` the gland.

What I claim as my invention, and desire to secure by vLetters Paten t, is-

1. The construction andarrangement ofthe follower D, substantially in the manner and for the purpose described.

2. The construction and arrangement of the ring-plate C, substantially in the manner and for the purpose herein described.

3. The arrangement of the cylindric springs 7a with the turning follower l), compressible packing, and steam-admission passages of the .stufng-box E and A, substantially as described.

4. The combination of the packing,ring plate, springs, and follower with a stuffingboX, substantially as and for the purpose described. y

5. lfhe combination of the compressible packing, springs lc 7c, and steam-passages, as described,tor the purpose set forth.

Witness my hand in the matter of my. application for a patent on a mode of constructing packing` for stufngboxes and other similar purposes this 5th day of December, 1865.

C. F. ,JAURIEL Witnesses:

M. FE'rsENHE-LD, A. BAUER.

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