US1367349A - Expansion device or slip-joint - Google Patents

Description

E. L. BARNES. EXPANSION DEVICE 0R SLIP JOINT.

APPLICAHON FIL ED NOV- 9 1920. I

Patented Feb. 1,1921.

2 SHEETS-SHEET 1.

. m. W -N \N N% N .m N1 M Q W WmN N1 1 E. L. BARNES. EXPANSION DEVICE 0R SLI'P JOINT.

APPLICAIION FILED NO-V. 9,1920. 1,367,349. Patented'Feb. 1,1921.

2 SHEETS-SHEET 2- UNITED STATES- .PATENT OFFICE. V

EUGENE L. BARNES, OF BUFFALO, NEW YORK, ASSIGTVOB TO DIS'I'RTC'I.

s'rnm contain, or

YORK.

Application fllcd- November 9, 1920, Serial No. 422,080.

To all whom it concern:

Be it known that I EUGENE L. BARNns, a citizen of the United States, residing at Buffalo, in the county of Niagara and State of New York, have invented certain newand useful Improvements in Expansion Devices or Slip-Joints, of which the following is a specification, reference being had therein to the accompanying drawing.

This invention relates to expansion structures, also known as slip joints, and is primarily dsigned for use in connection with steam and similar systems wherein provision is made for the normal tendency of the connected portions of a pipe line to expand, contract, or creep. I

The subject-matter of the present case is an improvement on the structure disclosedin my application Serial No. 305, 17 6, filed June 20, 1919. The structure thereof includes an inner .or slidable. joint-member provided with a guiding flange at its outer extremity that has a sliding movement within the-bore of a casing-member bolted or otherwise secured to an outer sleeve and housed by the casing'member. Secured to the outer sleeve is a packing-gland. In that instance, the slidable joint member was guided by means independent oi the packing-gland.

in an application for United States Lettext's-Patent, filed May 12, 1920, Serial No. $80,877, it have disclosed an improvement upon the structure disclosed in my application Serial No. 305,476; and in that case the casing-member of the first construction is omitted and the gland is so constructed as to constitute a support for and a guidingmedium of the slidable member which forms a component of the joint and, thus, the gland element is therein utilized to perform a dual i'unction, namely, that of maintaining the packing in proper position, and, also, that of guiding the movable component of the joint.

manufacturing thereof is greatly simplified. This structure of the present case primarily difiers-from that of the application Serial No. 380,777 in omitting the guiding flange onthe movable component of the joint and, instead, the gland element is so formed as I Specification of Letters Patent.

nonmn TONAWANDA, NEW YORK, a oonrona'r'xon or Nnw nirrmsron mvron oB-sLrr-aom'r.

Patented Feb. 1, 1921..

to engagethat member both inlproirimity to the gland which it holds in position and,

also, at a spaced-apartpoint whereby that member is guidedv in its movement and the var ous components of the structure are mamta ned in proper operative relation so that 1n ury to the contalned packing is prevented. J

-In order that the invention, may be more readily comprehended, I have disclosed the same in the accompan ing drawings,

which-a practical embodlment of'my inventlve-concept 1s illustrated; but it is to be understood that in thus illustrating the single embodiment, the invention is not limited thereto, since it is susceptible of a wide range of modification and variation without departing from-its underlying principles and salient features. 7

In these drawings:

Figure 1 is a view, partly in elevation and partly in longitudinal section, of an eirpanemu-structure made in accordance with myv invention; a

Fig. 2 is a view in central longitudinal section of the same;

Fig. 3 is a view in end elevation oi the structure; and

Fig. 1 is a view in vertical transverse sec" tion, on the line 4.4l, Fig. 2;.

Referring, now, to these (drawings, it will be noted that the reference-character l designates an outer or encompassing component or joint-member to which a pipe may be secured, as by welding at 2; though it is to be understood that the pipe may be otherwise attached to the member. The encompassing member is, preferablyand as shown, provided with a flange 3 and having a series of bolt-holes 4: through which extend bolts 5.

The member 1 is formed withan internal annular recess 6 adapted to receive packing 7. Disposed for a sliding movement within the member 1- is an inner or slidable member or component 8 which, preferably and as shown, is of such exterior diametral dimensions as to have a sliding fit within the borev .9 of the member 1.

The member 8 is of duplex construction and comprises two tubular portions 10 and 11, the outer portion (11) encompassing a section of the inner portion 10 and being spaced therefrom to provide an annular chamber, or space 12 for containing a cooling medium, such as air. The portions wand 11 from imparting Thus, the life of this packing is unaffected by heat and, in consequence, seldom requires are j dined at 13 so that the member 8 at that point is closed. Between the portions 10 and 11, at their 0 posite ends, is disposed a series of spacers 1 ,these being spaced apart to provide openmgs' for the assage of air or other coo fluid into the ehamber 12.- B rea- S011 o the fact that the portion 11 of the 'member 8 is always in direct contact with the packing 7, the air in the chamber 12 acts as an insulator to prevent the; heat of the fluid passing through the joint structure its heat to the packing.

reg lacement. r r

7 he packing 7 is maintamed wlthln the recess 6 by a gland'elenient 15 comprising a body portion 16, and a packing engaging portion 17 extending therefrom and o eter to be 'insertible at 18 in the recess 6. This packing-engaging portion has a sliding -fit with the member 8 and serves, in

' part, as a bearing for the member 8 This member 8, however, is further supported by a member-.gui from the body portion 16 of the gland element '15. This portion has its exfor the'member 8.

tremity inturned to rovide a bearing 20 he portion 19 is integral with the body portion-16 through web or skeleton 21, the constructionbeing such as to provide openings 22 for the passage of air from the atmosphere into an enlarged space 23 formed within the element 15.

The bolts 5 are threaded into the body portion 1601? the gland element 15 and serve as means to adjust the gland element in respect to the packing 7. By reason of the factrthat the bolts are all accessible from the exterior of the structure, it does not require any dismantling thereof to manipulate the pa'cklng7 or to replace it.

To the member 8 may be secured, as by welding'at 24, a pipe 25.

From this construction, itwill be perceived that the expansion structure comprises, primarily, the vencompassing component 1 which is recessed at 6 to receive the packing 7, and carries the bolts 5; also the gland element; but, on :the contrary, the

gland element itself is formed with the bearing portion 20 which encompasses and has ding portion 19 extending of the member 1, then with thebcaring 18 of the ortion 17, and then with the bearing 20 oft e portion 19. p The member 15, therefore, maintains the packing inproper place and condition and likewise maintains the sliding member 8 in accurate relation to the parts with which it has a sliding engagement.

'. In practical of the't pes of expansion structures herein referre to, it has been found advantageous to maintain the duplex member 8 in accurate sliding position with respect to the other associated parts by having the gland element in contact with this member as near to its axis as possible.

i It will now be seen that I have devised an efi'ective type of expansion structure and that, in comparison with those of my other cases, I have simplified the components thereof to a material extent.

What I claim is:'

1. An expansion-structure including a plurality of members associated for relative movement, and a gland element adjustably secured to one of the members and having ofi'set bearing portions slidably engaging one of the members at spaced-apart unahned points, the outermost bearing portion being of smaller diameter than that of the other bearing portion.

2. An expansion-structure including a pair of members associated for relative movement; one of the members being tubular in form; and apacking-holding element having a packing-engaging portion in sliding engagement with the tubular member and a member-guiding portion inwardly offset from the engaging portion and also in gliding engagement with the tubular mem- 3. An expansionstructure including a pair of members associated for relative movement; one of the members being tubular in form; theother member having an internal annular recess for packing; and a gland element having a packing-engaging portion in sliding engagement with the tubular member and a member-guiding portion inwardly offset from and unalined with the engaging portion and also in sliding engagement with the tubular member.

4. An expansion-structure including a pair of members associated for relative movement; one of the members being tubular in form; the other member having an internal annular recess for packing; and a gland element having a packing-engaging portion in. sliding engagement with the tubular member and adjustable against pa cking in said recess and a member-guidlng portion spaced apart and inwardly offset from the engaging portion and also in sliding engagement with the tubular member.

5. An expansion-structure including a pair of members associated .for relative movement; one .of the members being tubular in form; the other member having an internal annular recess for packing; and a gland element having a packing-engaging portion in sliding engagement with the tubular member and adjustable against packing in said recess and a member-guiding portion inwardly offset, from the engaging portion and also in sliding engagement with the tubular member; and means accessible from outside of the recessed member for adjusting said gland-element in. the recess.

6. An expansion-structure including a 'pair of members associated for relative movement; one of the members being tubular in form; the other member having an inter.

nal annular recess for packing; and a gland element having a packing-engaging portion in sliding engagement with the tubularmember and adjustable against packing in said recess and a member-guiding portion s aced apart from the engaging portion and a so in sliding engagement with the tubular member; and means accessible from' outside of the recessed member for adjusting said menib 7. An expansion-structure including aglandelement in the recess; said element having an annulus with openings in its walls to permit circulation of air to the tubular er. i

pair of members associated for relative ternal annular. recess for packing;- and a gland element having a packing-engaging portion in sliding engagement with the tubular member and adjustable against packing in said recess and a member-guiding portion spaced apart from the engagingportlon and also in sliding engagement with the tubular member; and means accessible from outside of the recessed member for adjusting said gland-element in the recess; said tubular member having an air-containing space'between its walls to insulate the packing from the heat of fluid flowing through the structure.

8. An expansion-structure including a pair of members associated for relative movement; one of the members'being tubular in form; the other member having an internal annular recess for packing; and a gland element having a packing-engaging portion in sliding on agement with the tubular member and a justable against packing in said recess and a member-guiding portion spaced apart from theengaging ing engagement wit the du lex member and sustaining the same.

culate into said air-containing space in the tubular member.

9. An expansion structure including a plurality of associated inembers, one of which has relative movement within the other, and one of which members is of duplex form, comprising innerand outer portions, the latter encompassing, but spaced apart from, the inner portion to provide an annular air-space; and a packing-holding element carried by one of the members and provided with a packing-engaging portion and with a member-guiding portion in sliding engagement with the lnner portion of the duplex member. g

'10. An expansionstructure including a plurality of associated members having relative movement; one member constituting an air-insulating component and being of duplex construction comprising a pair of tubular portions, one encompassing, but spaced apart from, the other to provide an air-space therebetween the other relatively-stationary member encompassing a portion of the duplex member; and a gland element adjustably carried by the stationary member and provided with a packing-engaging portion and with a memberuiding portion in slidthe inner portion of 11. n expansion structure including a pair of associated members adapted for 'rela tive movement; one member constituting an air-insulated component having a tubular portion and an annular air-containmg space between its inner and outer walls and encompassed in part by the other of the members; and 'a packing-holding element adjustably secured to said encompassing member and comprising a packing-engaging portion and a member-guiding portion spaced from the packingengaging portion and having a sliding engagement with the tubular portion of the air-insulated component.

l2.- An expansionstructure including a plurality of members associated for relative movement; one member constituting an en member and adjustable against the packing in the recess; said element comprising a packing-engaging portion and a memberguiding portion having a sliding engagement with the tubular portion of the air-insulated component.

13. An expansion structure including a plurality of members associated for relative movement; one member constituting an encompassingt component within which the; other member has a sliding movement and internally recessed to receive packing; the other member constituting an insulating component; and a combined gland and member-guiding component comprising a bodv portion, a packing-engaging portion extending therefrom into the recess in the encompassing component and having a sliding engagement with the insulating component, and a member-guiding portion extending from the body portion and formed with an angulated extremity having a sliding en gagement with the insulating component at a point thereon spaced from the point of engagement therewith of the packing-engaglng portion.

14. An expansion-structure including a plurality of members associated for relative movement; one member constituting an encompassing component within which the other member has a sliding movement and internally recessed to receive packing; the other member constituting an insulating component; and a combined gland and member-guiding component comprising a body portion, a packing-engaging portion extending therefrom into the recess in the encompassing component and having a sliding engagement with the insulating component, and a member-guiding portion extending from the body portion and formed with an angulated extremity having a sliding engagement with the insulating component at a point thereon spaced from the point of engagement therewith of the packing-engaging portion; and packing in the recess and insulated and maintained relatively cool from the heat of fluid flowing through the structure.

15. An expansion-structure including a plurality of members associated for relative movement; one member constituting an encompassing component within which the other memberhas a sliding movement and internally recessed to receive packing; the other member constituting an insulating component and comprising a tubular device having inner and outer portions, one encompassing but spaced from the other portion to provide an air-space in the device, one end thereof being closed and the other open for the ingress of air into the air-containing space; and a combined gland and memberguiding component comprlsing a body portion, a packing-engaging portion extending therefrom into the recess in the encompassing component and having a sliding engagement with the insulating component, an a member-guiding portion extending from the body portion and formed with an angulated extremity having a sliding engagement with the insulating component at a point thereon spaced from the point of engagement therewith of the packing-engaging portion; and packing in the recess and insulated and maintained relativel cool from the heat of fluid flowing throng the structure.

16. Am expansion-structure including a plurality of members, one of which has movement in relation to the other; the movable member comprising a plurality of spaced-apart portions to form an annular air-space; and an open-sided gland-element carried by the other member and provided with an annular gland portion adjacent one end and, adjacent its opposite end, with a member-guiding portion spaced apart from the gland-portion and directly engaging one portion of the movable member while the gland portion engages the other portion of that member.

17. An expansion-structure including a plurality of members, one of which has movement in relation to the other and comprises two portions, one of which encompasses the other and is spaced apart there from to form an annular air-s ace, and a gland-element secured to the ot er member and provided at one end with an annular gland portion and, at the other side end, provided with a member-guiding portion having a sliding engagement directly with the inner portion of the slidable member while the gland portion has a sliding engagement with the outer portion of that member.

18. An expansion-structure including a slidable tubular member attachable to piping and having a three-point bearing comprising an encompassing member also attachable to piping and bored to receive and slidably support one end of the tubular member, and a gland element provided with a packing-engaging portion secured to the encompasslng member for adjustment in rethree-point bearing com using an encom-.

passing member also attac able to piping and bored to receive and slidably support one end of the tubular member, and a gland element provided with a packing-engaging portion secured to the'encompassing member for adjustment in respect to packing therein and for slidably supporting the tubular member and provided, also, with an angulated member-guiding portion spaced apart from the packing-engaging portion and relativel remote from the encompassing member or supporting and guiding the tubular member.

20. An expansion-structure including a plurality of members associated for relative movement one within the other, and an element secured to onerof the members and provided with an inturned outer extremity and having bearing portions slidably engaging one of the members at spaced-apart points.

21. An expansion-structure including an encompassing member, a sliding member associated therewith for relative movement therein, and a packing-holding element adjustably secured to the encompassing member and having an angulated bearing-portion in enga ement with the sliding member at a point re atively remote from the encompassin member.

. 22. n expansion -structure"including a packing-supporting member, a slidingmember associated therewith for relative movement therein, and a bearing element secured to one of the members and provided with outer and inner bearing portions slidably engaging the sliding member at spacedapart points, the outer bearing portion being of diametral dimensions smaller than 3 those of the inner bearin portion.

In testimony whereof afiix my signature in presence of two witnesses.

EUGENE L. BARNES. Witnesses:

HOWARD LONG, Gnome H. Wris'r.

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