US1346616A - Packing apparatus - Google Patents

Description

A. R. TREICHEL AND E. J. 3300K. PACKING APPARATUS. APPLICATION FILED JAN. I7. 1920.

1,346,616, Patented July 13,1920.

.1??? Hill 0dr. 1222:2211; 73932-7262.

UNITED .STATES PATENT OFFICE.

ALBERT IR. TREIGHEL AND EDWARD J. BROCK, OF ST. LOUIS, MISSOURI.

PACKING APPARATUS.

Specification of Letters Patent.

Patented July 13,1920.

1 b all whom it may concern:

Be it known that we, ALBERT R. Tnnronnr. and EDWARD J. BROCK, citizens of the United States, residing in the city of St. Louis and State of Missouri, have invented new and useful Improvements in Packing Apparatus, of which the following 1s a specification.

This invention relates to packing apparatus such as employed for packing joints of all kinds, such as occur associated with reciprocating stems or spindles rotating shafts, or in expansion joints, valves, etc. The general object of the invention is to produce a simple and effective packing apparatus.

The invention consists in the novel features, and in the general combination of parts to be particularly described hereinafter, all of which contribute to produce a simple and efficient packing apparatus. A preferred embodiment of our invention will be particularly described in the following specification, while the broad scope of our invention will be pointed out in the appended claims.

In the drawing,

Figure 1 is a transverse section through the packing apparatus embodying our invention; V

Fig. 2 is a longitudinal section through the packing apparatus;

Fig. 3 is a vertical. section taken on the line 3-3 of Fig. 1;

Fig. 4: is a side elevation, partially broken away, illustrating another form or embodiment of the invention;

Fig. 5 is a side elevation of the parts shown in Fig. 4, partially broken away;

Fig. 6 is a plan showing a form of spring which we may employ;

Fig. 7 is a side elevation of the spring shown in Fig. 6

Fig. 8 is a front elevation of the packing apparatus shown in Fig. 2 with the cover plate removed;

F ig. 9 is a perspective broken'away and illustrating the preferred form of the meeti ng faces for the packing members;

Fig. 10 is a view similar to Fig. 9, but showing another form the meeting faces of the packing-members may take;

Fi n 11 is a vertical section through two packing-members but showing a modified construction in which each packing-member is built up of separate plates; and

Fig. 12 is a fragmentary cross-section showing another means we may employ for pressing the packing-members toward each other.

Referring more particularly to the parts and especially to Figs. 1 to 8, 1 represents a stu'lfing-box which is to be employed to pack a packing-member such as a reciprocating stem 2 which may be reciprocated through an opening in a wall 3 to which the stuffingbox 1 is attached. The stufling box is of cylindrical form and presents a bore t within which we place our packing-members a and a and b and 6 The packing members are produced by dividing a disk or block into a plurality of sections; in the present instance there are two sections to each disk and we prefer to employ a plurality of these disks so as to increase the effectiveness of the packing and so as to increase the length of the stuffingbox to meet special requirements. In the present instance we have shown only two of these packing disks, but is should be understood that we may employ any number of these disks as may be required. The packing-members a and a have meeting faces which are respectively tongued and grooved, that is to say, one of the faces will have a'tongue received in a corresponding groove in'the face of the opposite packingmember, for example, see Fig. 3 in which the packing-member a is represented as having a tongue 5 which is received in a corresponding groove 6 formed in the packing member a In addition'to this, the packing-members are not formed by dividing the packing disks on a straight line, but are formed with a jog 7 (see Fig. 1), that is to say, the packing-members are formed with adjacent meeting faces 8 near the member 2 which is to bepacked, and with other meeting faces 9 near their periphery which are off-set from the plane of the meeting faces 8. The meeting faces 8 and 9 are connected through the medium of the transverse shoulder or jog 7 referred to above.

Weprovide means for resiliently pressing the packing-members inwardly and toward each other so that they will engage the side of the member which is being packed. This is preferably accomplished by springs arrangedin' any suitable manner, for example, in Figs. 1 to 3, I have illustrated coil springs 10 disposed respectively around the stems of long screws 11, each screw being received in a pocket 12 drilled in the packthe packing-members.

ing-member a and screwing into the lower packing-member M. It will'be evident that these springs willi pull; or press the" packing-members toward each other and will yieldingly hold the same against the side of the stem 2.

. 7 In order to pack the packing-members on their outer side, they are provided with alining grooves 12 which cotiperate to form a continuous annular groove passing around In this annular groove we provide an expansion ring 13 which is preferably inthe'form of a split ring, 5 which. tends to assume a slightly larger diameter than that of the bore i. In assembling the parts, th1s spring r-lngor expansion ring, isslightly compressed so as to force itinto the bore of the stuffing-box; once it is in place,it tends toexpand and packs thespace between the packing-members and the bore of the stuffing-box. Instead oi employing coil springs, such as sarin 10 we ma em )lov a salin such as z: a l a:

springltillustrate'd in Figs. to 7 In using this form of spring,.we simply provide the packing members with inner grooves 15 disposed at the bottomsof the annular grooves 16 which receive the ex pansion ring 17.. In order to apply the spring ring 141-, it is simply opened'out suiiiriently so as to enable it to be passed over the packingmembers. King 1 1- may be formed of fine spring wire, the endsbeing bent so as to form transverse fingers 18 .which should be received in pockets in the groove 15 to prevent the springyl rom work ing around on thepacking members.

In assembling the. parts, the different packing disks which are to be placed within the stuffing-box are assembled so that: the meeting faces of one pair of the-packingr members. is staggered or: intermediately disposed with respectto'the packing members I of the otherdisk, (see Fig. 8). In, order to tongue.

insure thatthe packing disks will maintain this relation, we provide the bottom-of the stulling-boxwith .slotss18 which extend in. thed1rect1on1n which members a and (b movein approaching each other, andfthe member: (4 1s PIOVlClGCtWltll small pins 19 which are" received respectively in these box and between the packing-members, and this arrangement is particularly advisable in short stuiii'n'g-boxes, but in longer stuffing-boxesthe form of meeting face shown in Fig. 10 may be employed in which case we rely upon the staggering of the different packing disks to prevent leakage through the packing-members consecutively, parallel with the packed member.

In practice there might be some dil'liculty in practically storming the tongues 5 and grooves 6 from a solid piece. If desired, this can be avoided by constructing'the packing disk of three plates25, 26 and'27 (see Fig. 11-) the plates 25 and 26 being of the same thickness as the rabbet groove 24 shown in Fig. 9 and the middle or intermediate plate 27 being of the same. width astheouter groove which receives the expansion ring 28, the tongue 29 correspondingitotongue 5 being-formed the full width of the plate 27; in other words, in this construction'we make the tongue and the ring of the same width.

7 In Fig. 11, the upper portion of the figure represents a packing-member 0' and the lower portion represents a packing. member 0 each packing member being composedof sections of the plates 25, 26' and'27 andmeeting together'to'form a joint 30. The plates 25, 26 and 27 may be connected-together in any suitable manner, for example, by brazing, or by the use of dowelpins, and the packing-members 0 and 0 may be pressed toward each other by means of the springs such as spring 14 or springs such. as the spring 10 described above, or by any other suit-able means. 7 1

e prefer. to employ iron or steel for making the packing-members and provide the same with bushings31o1t' any suitable bearing material. When theseebushings become worn, they can be renewed.

Vemay provide meanssuch as that shown in Fig. 12for holding the packing-members against the shaft. In this'case we provide a plurality of small leaf springs 32 which lie in the annular spacebetween the divided packing disk '33 and the expansion ring'34l; each spring is held in place byia pocket35 that receives the spring.

What we claim and desire LettersPatent is:

jl. Inpacking apparatus, the combination of a stuffing-box having a'boreand forming an annular packing chamber. around the member to be packedyopposi'tely disposed packing-members received in the pack-ing chamber 'for engaging opposite sides of the member to. be packed, means for resiliently pressing the. packing-members toward ieach other, said packing-members having a'li'ning grooves cooperating to-formi a continuous to secure by annular groove passing-around the-exterior of the packing-members; and a' spilit 'expan s10n. ring fitting lnethei annular groove, ex-

erting its pressure against the bore of the stalling box and packing the space between the packing-members and the face of said bore.

2. In packing apparatus, the combination of a stufiing-box having a bore and forming an annular packing chamber around the member to be packed, oppositely disposed packing-members received in the packing chamber for engaging opposite sides of the member to be packed and having faces lying adjacent to each other, springs for press ing the packing-members toward each other and for holding the same against the side of the member to be packed, said packingmembers having alining grooves in the outer surface thereof to form a continuous annular groove passing around the exterior of the packing-members, and a split expansion ring fitting in the annular groove, exerting its pressure against the bore of the stuflingbox and packing the space between the packing-members and the face of said bore.

3. In packing apparatus, the combination of a stalling-box having a bore and forming an annular packing chamber around the member to be packed, oppositely disposed packing-members received in the packing chamber for engaging opposite sides of the member to be packed and having faces ly ing adjacent to each other, the face of one packingmember having a tongue, the face of the opposite packing member having a groove receiving the tongue, springs for pressing the packing-members toward each other and for holding the same against the side of the member to be packed, said packing-men'ibers having alining grooves in the outer surface thereof to form a continuous annular groove passing around the exterior of the packing-members, and a split expansion ring fitting in the annular groove, ex-

erting its pressure against the bore of the stuffing-box and packing the same between the packing-members and the face of said bore.

4:. In packing apparatus, the combination of a stuffing-box having a bore forming an annular packing chamber around the memher to be packed, a disk divided into a plurality of sections constituting packing-members, said. packing-members having bushings of bearing material for engaging opposite sides of the member to be packed, and dis posed within the packing chamber, springs for forcing the packing members inwardly against the side of the member to be packed, said packing-members respectively having grooves and cooperating tongues on their meeting faces and having alining grooves in their outer faces cooperating to form a 0011- tinuous annular groove passing around the exterior of the packing-members, and a split expansion ring fitting in the annular groove exerting its pressure against the bore of the stufling-box and packing the space between the packing-members and the face of said bore.

5. In packing apparatus, the combination of a stufling-box, a packing disk received therein formed of side plates and an intermediate plate, said disk being divided into sections constituting packing-members, one of said packing-members having meeting faces with tongues the width of the intermediate plate, the opposite packing-member having grooves of the same width as the intermediate plate, and receiving the tongues.

6. In packing apparatus, the combination of a stuffing-box, a packing disk received therein formed of side plates and an intermediate plate, said disk being divided into sections constituting packing-members, one of said packing members having meeting faces with tongues the width of the intermediate plate, the opposite packing-member having grooves of the same width as the intermediate plate, and receiving the tongues, said packing members having alining grooves in their outer faces of the same width as the intermediate plate, and an expansion ring received in the grooves for packing the space between the packing members and the wall of the stuffing-box.

In testimony whereof we have hereunto set our hands.

ALBERT R. TREICI-IEL. EDWARD J. BROOK.

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