US1388890A - Stopper - Google Patents

Description

2 SHEETS-SHEET 2.

Patented Aug. 30, 1921.

L11 -II M. aovmn. STOPPER.

APPLICATION FILED DEC-20,1919.

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warren STATES rArENT OFFICE.

MIGHAEL IPROVIQH, OF CHICAGO, ILLINOIS.-

s'rorrnn.

I Specification of Letters Patent. Patent d 30 1 2 Application filed December 20, 1919. Serial No. 346,260.

,a gas main, as'in the'case of repairs or extensions to the pipe lines;. and my primary object is to provide a novel, simple and economical construction of device for this purpose which may 'be quicl'rly and effectively applied to use, and by the use otwhich inconvenience and danger to the workman from escaping gas may be greatly reduced. Y

Reterrmg to the accompanying drawings :Figure 1 is a face view in-elevation of a device embodylng my invention, the device being shown in a gas main intheposi tion it occupies when performing 1ts tunetion as a stopper, the section being-taken at the line 1 onFig. 2 and viewed in the direction of the arrow. 2 is an edge view of the device showing the pipe 't'o which it is applied in longitudinal section. 3 is a view like Fig. 1 of the device, showing it by full lines in the position its parts assume prior to its application to stopper-forming position, and bydotted lines thepositions or its parts when positioned'in a'pipe as shown 1 in Fig. 1. Fig. 4e 'isa'section taken at the line 1- 1 on'F1g.'1 and viewed in the direction of the arrow. Fig. 5 is-a section taken at the line 5-5 onFig. 1' and viewed ln'the direction of the arrow; and Fig. 6, a section taken at the line '6-6 on Fig. 1- and viewed.

in the direction of the arrow.

In accordance with the preferred, illustrated, embodiment of my invention the 'de vice is formed of a frame 7 comprising the generally parallel side members "8 8" 'ter'mediate. the upper and lowerends of the frame 22 and extending at its ends into united at their upper ends by the crossepiece 9 containing centrallydisposed, screw threaded opening 9, and the'laterally opening slots 10 and 11 at opposite" sides of the opening referred to, and a ring 12 externally screw-threaded asrepresented and having upwardly-extending, diametricallyopposed lugs 18 connectedwith the lower ends of the frame sides 8 1n overlapped relation, as by the screws 14, one of the frame sides 8 being provided with a screw 15 screwing therein for a purpose hereinafter ex plained. The frame thus provided is equipped at its lower end with a diaphragm 16 shown as, and by preference,-in the form' ofa bag formed of opposed-sections 17 of flexible material, as tor example fabric such as close-grained duck, having their edges connected, and bound by, a rubber strip, 18,

the fabric and rubber strip being secured together in any suitable way, as for example by sewing them together or vulcanizing them into an integral structure. The upper,.open, end ofthe bag, this end'beingrestricted as shown, is held by a tightjoint to the threaded ring 12, as by clamping it thereto by means of an expansible, segmental, ring 19,

as ofwire, between which and the inner surface or the ring 12, the wall of the open;

mouth of the bag extends, the ring 19 op-z' posing annular grooves 20 in'th'e outer surfaces of arc-shaped members'21 located in the frame and pressed against the bag, and

held in place,'by the screws 14, thereby pro-. viding means whereby the bag 16 iS remQ ably yet firmly held in place on the frameT. One of the members21 is secured to the ring 19 midway between the ends of the'latter,

and the other engages the ends of the wire torming this ring.

The device further comprises a member" adapted to be operatedto forcethe bag 16 into tight-jointdorming position in thepipe T 90 to be closed, this member being preferably formed of aframe 22 comprising thegenen ally parallel, longitudinally extending, bars 23 connected at their lower ends by a cross pin 24 and at their upper ends by acrosspiece 25 formed integrally itherewith,the

bars 23 at the upperend of the frame 22 being spaced apart a distance substantially equal to the distance between the two slots 10 and 11,'adapting the'frame 22 to be assembled withthe frame 7, as hereinafter described. The'bars 28 carry a cross-pin 26,

shown in the form of a bolt, located inslots 27 in the frame bars 23, this crossdirection lengthwise" of the .frame 22. Pivotally connected with the pin 26 are links 28 which extend therefrom in opposite directions, these links, which are preferably pin being slidable in these slots in .a"

of general arc-shape, preferably having sleeve sections 29 which surround the pin 26 and by which the pivotal connection therewith is afforded. The links 28 cooperate with members 30 for cotiperation with the diaphragm 16 for forcing the latter into tigl1t-joint-forming condition relative to the inner surface of the pipe with which the device is to be used.- The members 30 which, in the particular construction illustrated, operate to cause the diaphragm to assume the position stated, upon operating them to spread condition within the bag 16, are preferably formed of comparatively springy wire, each being at one end of general semicircular shape as shown at 31, and at its opposite end of reversely curred form as shown at The members 30 are pivoted at eyes 33 to the cross-pin 24 at the lower ends of their portions 31, and at eyes 34 at their opposite ends to the pins 35 carried at the outer ends of the links 28, the members 30 being reversely positioned as shown wherebywhen the links 23 are in the position shown by full lines in Fig. 3, the frame like structure formed by the members 30 is in very compact and contracted condition, adapting of the insertion of the structure of which these members are parts, into and through, the ring 12 and into the bag 16 through the mouth portion thereof, and when the links 28 are in the position represented by dottedlines in Fig. 3, the members 30 are in the expanded position shown by dotted lines in Fig. 3 wherein th frame-like structure formed of the members 30 assumes an approximately circular form.

The frame 22 has journaled in its crosspiece 25 a threaded rod 36 extending lengthwise of this frame and provided at its outer, upper, end with a circular hand-wheel 37 by which to rotate the rods 36 and a shoulder portion 38 bearing against the top of the cross piece 25, the lower end of this rod being adapted to screw into the threaded opening 9 in the cross-piece 9, the rod 36 which is provided with anut 39 to prevent it from becoming disconnected from the frame 22, being provided for a purpose hereinafter explained.

One of the links 28 is provided with a screw-threaded rod 40 j ournaled in a slot 28 therein to extend crosswise thereof, the threaded rod 40 having collar sections 41 spaced apart and arranged at opposite sides of the link through which this rod extends,- to permit the rod 40 to be rotated on this link but prevent it from becoming discon-- nected therefrom, the outer end of this rod having a hand-wheel 42 by which it may be rotated. The opposite, threaded, end of the rod 40 is adapted to screw into a threaded opening 43in the other link 28, the device just described operating as a means for forcibly drawing the links 28 together when this device is positioned as shown in Fig. l. 1

as indicated at 45 to provide the screwthreaded opening therein shown. He then introduces the bag-diaphragm 16 in'crum- .pled condition into and through the tap opening 45 and into the interior of the pipe 44, thereupon screwing the ring 12 into this tap-hole to the position shown in the drawings, wherein the bag 1.6.extends crosswise of the pipe 44. In accordance with the preferred manner of using the device, the operator, assuming the structure formed of the frame'22, links 28 and the expanding members 30, to be disconnected'from the frame 7, adjusts the links 28, the rod 40 being disconnected at its threaded extremity from theadjacent link'28, the one at the left-hand side of Fig. l, to cause these links to assume the outwardly spread position, and the members 30 the contracted position shown by full lines in Fig. 3, the pivot-pin 26 in this operation sliding downwardly in the slots 27. WVith this part of the structure thus positioned, the operator introduces it at its lower end into and through the ring 12, and thereupon swings the links 28 toward each other with the result of causing these links to rise and the portions 31 of the members 30 to move outwardly. The structure thus introduced into the ring 12 is then bodily swung to a position in which the upper ends of its bars 23 extend into the slots 10 and 11 of the frame 7 as shown, and the operator continues to swingthe links 28 toward each other to a position in which the,

outer threaded end of'the-rod 40 may be screwed into the opening 43. The threaded rod 36 is then screwed into the threaded opening 9 and tightened up to cause the frame 22 to be forced at its lower end against the bottom of the diaphragm to insure a tight joint between the latter and thepipe at this point. The operator then tightens the adjusting device formed of the rod 40 to forcibly squeeze the links 28 together with the result of causing the members 30 at their portions 31 to be forced against the inner surface of the bag for effecting a tight joint between the latter and.

the inner surface of the pipe 44.

In this connection it may be stated that by reason of the fact that the members 30 are constructed and associated with the other operating elements as shown, a tight joint between the diaphragm and the inner surface of the pipe 44 will be produced regardless of slight 'unevennesses in the pipe, or variations in the internal diameters of the pipes with which the device is to be used within certain limits, itbeing noted that in the preferred construction illustrated the members. 30 are disposed at their upper ends in intersecting relation and thusextendat relatively wide angles with relation to the axis of the ring 12,,and that'the force applied to these members isat thesides of the frame 22 opposite that atwh-ich; the portions of the members 30 engaging ,thebag extend;

.After the threaded rod '36 has been screwed down to the position stated, theop erator, to insure against the" twisting of the frame 22, tightens the screw-l5 againstthe side of this frame. The structure, of which the frame 22 forms a part, maybe readily removed from the jexpanded position described,--by unloosening the screws'15, 36 and 4:0 and swinging the'links 28 outwardly in opposite directions to contract the framelike structure presented by the lower curved portions 31 of the members 80. v

It will be noted that as-soon as the plug 12 is screwed into the tap-hole of the'pipe, the'escape of gastherefrom is, prevented, the plugging of this opening againstthe escape of gas not beingdependent upon the operation of the portion ofthe apparatus which forces the diaphragm 16 into tight engagement with the walls of the pipe, or

the employmentof anysealing material such as mud or the like which is now commonly used by workmen when a gas mainis to berepaired or connections made therewith.

The work of makingrepairs on, and connections with, gas mains maybe greatly ex pedited and accomplishedwith the minimum inconvenience or danger to the workman by employing stopper means according to my invention, and where desired a number of the diaphragm-equipped plugs may be positioned .in the pipe, thus closing the tap-. holes and the diaphragm-spreading means being applied to position therein as desired,

I andavoiding danger of the gas escaping after theplugs are inplace.

lVhile I haveillustrated'and described a' particular construction embodying my invention, I do .not wish to be understood as intending to limit it thereto'asthe same may be variously modified and altered without departing from the spirit of my invention, it being my intention to as fully and completely as the art will permit. V 1

WVhat I claim as new and desire to secure by Letters Patentii's:

1. A levice for prising, in combinatioina bag-diaphragm containing an opening and equipped at its the prior state of open end with a hollow member adapted to be secured in the tap-hole of a pipe, and

means for causing said bag to be forced into tight-joint-forming condition relative to the inner wall of the p1pe.-

2 A-Vdevice for the purpose set forth, comprising, in combination, a bag-d1aphragm containing an opening and equipped at its" claim my invention the purpose-set forth, comopen portion with a hollow, externallythreaded member adapted to be screwed into 'thetap-hole of a pipe, and means for causing said bag to'be forced into tight-jointforming condition relative to the inner wall prising, in combination, a bag-diaphragm 7 containing an opening and equipped at its open end with ahollow member adapted to be secured in'the tap-hole of a pipe, and

means adapted to be introduced into said bag through said hollow member for caus ingsaid bag to be forced into tight-jointforming condition relative to the inner wall ofthe pipe.

5. A- device for the purpose set forth, comprising 'in' combination, a bag-diaphragm containing an opening andequipped at its openportion'with a hollow member adapted to be. secured in the-itap'hole of apipe, and expansible meansin said bag for causing'the latter to "be forced into tight-j oint-forming condition relative to the inner wall of 'the mp6, V

' 6. A device for the purpose set forth, comprising, incombination, a' diaphragm, a

member to whioh said diaphragm is connected andadaptedto besecured in the tap-hole of a pipe,'a second member adapted to ensite said tap hole,to make a tight joint, and

meanson saidsecond member for forcing said diaphragm into t1ghtomt-form1ng condition relative tothe wall of the pipe.

7. A device for the purpose set fortln'comprising, in combination,'a diaphragm, a

member to which said diaphragm-is'connected and adapted' to be secured inthe tap hole of a pipe, a secondmember adapted to engage the lowerportlon of said diaphragm and movable relative to said first-named member, a's'crew device on one of said mem-' bers and'engaging the other thereof and operating'to force said second member inwardly against the portion of said diaphragm at the {side thereof opposite said tap-hole, to make a tight joint, and means on said second member forforcing said diaphragm into tight-joint-forming conditionrelative'to the wall of the pipe.

8. A device for the purpose set forth, comprising, in combination, a bag-diaphragm,a hollow member to which said bag-diaphragm is connected and into which it opens, said hollow member being adapted to be secured in the tap-hole of a pipe, a second member extending through said hollow member and into said bag. and adapted 'to engage the lower portion of said bag and movable relative to said first-named member, means on one of said members and engaging the other thereof for forcing said second member inwardly against the portion of said diaphragm at the side thereof opposite said tap-hole, to make a tight joint, and means on said second member for forcing said diaphragm into tight-joint-forming condition relative to the wall of the pipe.

9. A device for the purpose set forth, comprising, in combination, a structure formed of a flexible diaphragm and a hollow member connected therewith and adapted to be secured in a tap-hole of a pipe, and a second structure disconnected from said first-referred-to structure, adapted to be inserted into said member and operable to force said diaphragm into tight-joint-forming condition relative to the inner surface of the pipe.

10. A device for the purpose set forth, comprising, in combination, a 1 structure formed of a flexible diaphragm and a hollow memberconnected therewith and adaptedto be secured in a tap-hole of-a pipe, a second structure disconnected from said first-referred-to structure, adapted to beinserted into said member and operable to force said diaphragm into tight-joint-forming condition relative to the inner surface of the pipe, and means releasably connecting said structures together.

11. A device for the purpose set forth, comprising, in combination, a a structure formed of a flexible diaphragm and a hollow member connected therewith and adapted to be secured in a tap-hole of a pipe, a second structure separate from said first-referred-to structure, adapted to be. inserted into sald member and operable .to force said dia-;

phragm into tight-joint-forming condition relative to the inner surface of the pipe, and means operating upon assembling said structures together to force said second structure inwardly against the portion of the pipe opposite the tap-hole therein.

12. A device for the purpose set forth, comprising, in combination, a structure formed of a flexible bag-diaphragm and a hollow member connected with, and opening into, said bag-diaphragm and adapted tobe secured in a tap-hole of a pipe, and a second structure, disconnected from said first-referred-to structure, adapted to be inserted into said member and b'agediaphragm and operable to force said diaphragm into tight j oint-forming condition relative to the inner surface of the pipe. I

13. A device for the purpose set forth, comprising, in combination, a structure formed of a flexible bag-diaphragm and a hollow member connected with, and opening into, said bag-diaphragm and adapted to be secured in a tap-hole of a pipe,- a second structure, disconnected from said first-re ferred-to structure, adapted to be inserted into said member and bag-diaphragm and operable to force saiddiaphragm 'into tightjoint-forming condition relative to the inner surface of the pipe, and means releasably connecting said structures together.

14:. A device for thefpurpose set forth, comprising, in combination, a structure formed of a flexible bag-dia hollow member. connected wit and opening into, said bag-diaphragm and adapted to be secured in a tap-hole of a pipe, a second structure, separate from said first-referred-to structure, adapted to be inserted into said member and bag-diaphragm and operable to force said diaphragm intotight-joint-forming condition relative to the inner surface of the pipe, andmeans operating upon assembling said structures together to force said second structure inwardly against the portion of the pipe opposite the tap-hole therein.

- 15. A device for the purpose set forth,

comprising, in combination, a structure formed of a diaphragm adapted to be introduced into a pipe through a tap-hole therein and a hollow member with which said diapliragm is connected and adapted to be secured in the tap-hole, said structure being constructed and arranged to prevent escape of gas from the pipe through said tap-hole, and means extending through said member for forcing said diaphragm into tight-jointforming condition relative to the inner surface of the pipe.

' '16. A device for the comprising, in combination, a structure formed of a bag-diaphragm adapted to be introduced into a pipe through a tap-hole therein and a hollow member with which said bag-diaphragm isconnected and into which it opens, said hollow member being adapted to be secured in the tap-hole and said structure being constructed and arranged to prevent escape-of gas from the pipe through said tap-hole, and means extending through said member and into said bag-diaphragm for forcing the latter into tight-jointformingcondition relative to the inner surface of the pipe.

, 17. In a device for the purpose set forth, the combination of a diaphragm adapted to be introduced into a pipe through a tap-hole therein, and=-means for forcing the diaphragm into engagement with the inner surface of the pipe formed of a member adapted to enter the pipe through the taphole, a pluralityof curved members each flexibly connectedatone end with the inner hragm and a I purpose set forth,

I operatively 'oted to said'member and end of said member, with their curvedlportions, for operatively engaging said phragm, extending outwardly in opposite directions from said member, and'links pivwith the other ends of said curved members for the purpose set forth.

18. In adevice for the'purpose set forth,

the combination of a diaphragm adapted to be introduced intoa pipe through atap-hole therein, and means for forcing the diaphragm into engagement with the innersurface of the pipe formed of a member adapted to enter'the pipe through the taphole, a plurality of curved members each flexibly connected at one end with the inner end of said member, with their curved portions, for operatively engaging said diaphragm, extending outwardly in opposite directions from said member, links pivoted to saidmember and flexibly connected with the other ends of said curved members for the purpose set forth, and means engaging said links for moving ,them relative to each other. J

19. In a device for the purpose set forth, the combination of a diaphragm adapted'to be introduced into a pipe through a tap hole therein, and means for forcing the diaphragm into engagement with the inner surface of the pipe formed of a member-adapt ed to enter the pipe through the tap-hole, a plurality'of curved members eachfiexibly connected at one end with the inner end of said member, with their curved portions, for operatively engaging said diaphragm, extending outwardly "n opposite directions from said'member,

and "links pivoted to said member by a slidingplvotand flexibly con nected with the other ends of said curved members.

20. In a device for thejpur-pose setforth, the combination of a diaphragm adaptedto be introducedinto a pipe therein, and means" for forcing the dia phragm into engagement with the'inner sur face of the pipe formedofj'a member adapt ed to enter the plpe-through thetap hole,

plurality of curvedmembers each flexibly connected at one end with the inner-endof said member, with their curvedportions, for engaging said diaphragm, ex tending outwardly in opposite directions from said member, links pivoted to said member by a sliding 1vot and flexibly'con nected with the other ends of said curved members, andmeans' engaging said links for moving them relative to each other.

21. In adevicefor the purpose set forth, the-combination of a be introducedintoa pipe through a tap-hole therein, and means for phragm into engagement with the inner fsurface'offthe pipe formed of a member adapted to enterthepipe through the tap-hole, a

dia-

flexibly connected pipe through through a tap-hole diaphragm'adapted to forcing the dia plurality of curved spring members" each flexibly connected at oneend'with the inner end of said member, with their curved por-- tions,-for operatively engaging said diaphragm, extending outwardly in opposite directions from saidmemben'and links piv oted tosaid'member and flexibly connected with the other ends of said curved members forthepurpose set forth.

22. I'n-a device for the purpose set forth, the combination of a diaphragm adapted to' be introduced into a pipe through atap-hole therein, and means for forcing the -diaphragm into engagementwith the inner surface of the pipe formed of a member ada'ptedito enter the pipe throughthetapa hole, a plurality of curved/members each pivotally connected at. one end'with the in be introduced into a pipe through a tap-hole for. forcing the" diatherein, and means phragm into engagement with the inner surfaceof the pipe for-med of a lorigitudi nally slotted member adapted to enter the the tap-hole,

a plurality of curved members each flexibly connected at I one end with the inner end of'said member with their curved portions, for 'operatively engaging said diaphragm, extending out-" wardly in opposite directions from said member, links flexibly connected with the other ends of said curved members, anda pivot device connected with the other'ends of said links and 'slidable in the slotted portion of said member.- f

2L In a device for the purposeset forth, the combination of a bag-diaphragm adapted to be introduced intoa pipe through a tap-hole therein, and means extending into said bag-diaphragm for forcing "the latter into engagement with the inner surface of the pipe formed'of a member adapted to enter "said diaphragm through the tap-hole,a plued to be introducedinto apipe through a Y tap -hole therein,

and means extending into said bag-diaphragm for forcing the'latter intofengag'ement withthe' inner surface of the pipe formed of a member adapted to enter said diaphragm through the tap-hole,

a plurality-of curved members each flexibly connected at one end with the inner end of said member with their curved portions, for operatively engagingsaid diaphragm, extending outwardly in from said member, links pivoted to said member and flexibly connected with the other ends of said curved members, and means engaging said links for moving them relative to each other.

26. In a device for the purpose set forth, the combination of a bag-diaphragm adapts ed to be introduced into a pipe through a tap-hole therein, and means extending into said bag-diaphragm for forcing the latter into engagement with the inner surface of the pipe formed of a member adapted to enter said diaphragm through the tap-hole, a plurality of curved members each flexibly connected at one end with the inner end of said member with their curved portions, for operatively engaging said diaphragm, extending outwardly in opposite directions from said member, and links pivoted to said member by a sliding pivot and flexibly connected with the other ends of said curved members. 7 V V 27. In a device for the purpose set forth, the combination of a bag-diaphragm adapted to be introduced into a pipe through a tap hole therein, a hollow member connected -with, an opening into, said bag-diaphragm and adapted to be secured in the taphole, and means for forcing said diaphragm into engagement with the inner surface of the pipe formed of a member adapted to enter said bag-diaphragm through said firstreferred-to member, a plurality ofeurved memberseach flexibly connected at one end with the inner end of said secondreferred-to member with their curved portions, for oper atively engaging said diaphragm, extendin outwardly in opposite directions from the member carrying them, and links pivoted to said last-referred-to member and flexibly connected with the other ends-of said curved members.

28. A structure for the purpose set forth, comprising a member, a plurality of curved members each flexibly connected at one end with the inner end of said member, with their curved portions, for operatively engaging a diaphragm, in opposite directions and links pivoted to said member and flexibly connected with the other ends of said curved members. I t v 29. A structure for the purpose set forth, comprising a member, a plurality of curved members each flexibly connected at one end with the inner end of said member withtheir curved portions, for operatively engaging a diaphragm, extending outwardly in opposite directions from said member, and links extending outwardly opposite directions from said member,

having sliding pivoted connection with said member and flexibly connected with the other ends of said curved members.

comprising a member, a plurality of curved w1th their curved'portions, for operatively engaging a diaphragm, extending outwardly in opposite directions from said member, and links pivoted to said member and flexibly connected with the other ends of said curved members.

31. A structure for the purpose set forth, comprising a member, a plurality of curved members pivotally connected at one end with the inner end of said member with their curved portions, for

33. A structure for the purpose set forth presenting curved, relatively movable portions for engaging a diaphragm, said portions extending in disconnected intersecting relation, and means for moving said portions outwardly in opposite directions.

34.,A structure for the purpose set forth presenting curved, relatively movable portions for engaging a diaphragm, said portions extending in disconnected intersecting relation, and means engaging said portions at the side of said point-of intersection opposite that at phragm. I 7

,7 35.; A structure for the purpose set forth presenting curved, relatively movable, porwhich they engage the diations for engaging a diaphragm, thelower ends of said portions being flexibly connected together and their upper portions ex-- tending in disconnected, intersecting, relation, and means for moving said portions outwardly inopposite directions.

36. A structure for the purpose set forth presenting curved, relatively movable, portions for engaging a diaphragm, the lower ends of said nected together and their upper portions extending in disconnected, intersecting, relation, andemeans engaging said portions at operatively engaging a diaphragm, extending outwardly in opposite directions from said member, and links,

to said member and pivotally con-- the purpose set forth,-

portions being flexibly con-- the side of said point of intersection opposite that at which they engage the diaphragm. a

37. A structure for the purpose set forth, comprising a member, a plurality of curved members each flexibly connected at one end with'the inner end of said member, with their curved portions,'for operatively' engaging adiaphragm, extending'outwardly in opposite directions fromsaid member, said curved members extending in intersected relation, and means for shifting said curved membersoutwardly in opposite directions. p j

38. A structure for the purpose set forth, comprising, in combination, a bag-dim phragm adapted to be inserted into a pipe a member" through a tap-hole therein, adapted to be introduced into said bag-diaphragm, a plurality of curved members flexibly tions extending into said, diaphragm, for

7 comprising,

forcing the latter 1nto tight-joint-forming condition relative to the inner wall of a pipe, extending outwardly in opposite directions from, said member, said curved members extending beyond their pivotal connection extending outwardly in opposite'directions ibly connected connected at one end with the inner end of said member Iwith their'curved porfor the purpose set forth,

a "bag-dia-V frames for forcing ferred-to frame; condition relative to the inner wall of a pipe, 1

from said member, said curved members extending beyond their pivotal connection with said member, in intersecting relation,

and links pivoted tosaid member and flexwith the other ends of said curved members.

40. A device for the purpose set forth, comprising, 7 in combination, a bag-diaphragm adapted to be inserted into a pipe through a taphole therein and containing an opening, a threaded hollow member connected with said bag-diaphragm at the opento screw into the ing therein and adapted tap-hole, a frame connected with and extending outwardly from said hollow memher, a second frame containing a longitudinally slotted portion,

the lower end frame with their curved portions at which they extend into said bag-diaphragm, ex tending outwardly in opposite directions from said last-referred-to frame, links pivotally connected with the other ends of said curved members, a pivot device in the slotted portion of said frame and movable lengthwise of the latter forming apivotal connection of said links at their other ends therewith, said curved portions extending in v curved members pivotally connected at their lower ends with 1 of the second-referred-to V intersected relation with the connections between said links and said curved portions being at the side of said point of intersec tion opposite that, at which said curved portions are pivotally' connected with said sec ond-referred-to member, means cooperatlng with said links for drawing them together to move said curved portions away from each other, and means cooperating with said said second-referred-to frame inwardly relative to said first-re- MICHAEL rRovIo'HQ

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