 of a specimen through a filter element and which facilitates both on-site filtering and incubation of microorganisms in liquid specimens is disclosed in U.S. Pat. No. 2,879,207.
The filtering devices exemplified by the aforementioned U.S. patents exhibit a number of drawbacks. For example, they require a separate vacuum source such as a vacuum pump or an evacuated bottle to effect vacuum filtering; they are relatively bulky and cumbersome to use; and they require rather complex manipulation to accomplish the desired vacuum filtration.
More recently, attempts have been made to provide apparatus for liquid filtering and sampling which are of relatively small size and are operable by manual manipulation to effect pressure differential filtering. See U.S. Pat. Nos. 3,832,141, 3,846,077, 3,955,423, and 4,644,807. These devices, while being adapted to separate stratified immiscible liquids, do not enable manual manipulation to effect vacuum filtration of liquid specimens so as to filter out solid reactants or particulate for diagnosis. Moreover, these devices require that relatively close tolerances be maintained in the manufacture of their various components, thus increasing their cost significantly. 1. Field of the Invention
This invention relates to pressure containment apparatus, and, more particularly, to cylindrical apparatus for containing a leaking cylinder out of which gas is leaking.
2. Description of the Prior Art
There are no known U.S. patents which disclose container apparatus designed to hold a leaking gas tank or cylinder until the tank or cylinder can be disposed of. However, there are several U.S. patents which disclose apparatus for sealing a leaking valve on a tank. In each patent, there are special elements associated with the valve or the tank that make the sealing of the valve itself possible. None of the elements associated with the sealing of the valve comprises a pressure vessel itself.
In U.S. Pat. No. 2,465,095 is disclosed a frame in which a tank having a leaking valve is placed. The frame includes elements for sealing the top portion of the tank.
U.S. Pat. No. 3,323,541 discloses apparatus with another type of sealing element for the top of a tank having a leaky valve. The sealing element cooperates with external threads at the base of the leaking valve.
U.S. Pat. No. 3,756,450 discloses apparatus for retaining a protective cap over a leaking valve of a tank. The apparatus does not appear to be designed to prevent leaking,
of a specimen through a filter element and which facilitates both on - site filtering and incubation of microorganism in fluid specimens is disclosed in U.S. Pat. nobelium. 2,879,207. 
 The filtering device exemplified by the aforesaid U.S. patents exhibit a number of drawback. For case, they require a disjoined vacuum source such as a void pump or an evacuated bottle to effect vacuum filtering; they are relatively bulky and cumbersome to use; and they require rather complex handling to accomplish the desired vacuum filtration. 
 More recently, attack have been made to provide apparatus for melted filtering and sampling which are of relatively minor size and are operable by manual manipulation to effect pressure differential filtering. See U.S. Pat. Nos. 3,832,141, 3,846,077, 3,955,423, and 4,644,807. These devices, while being adapt to separate stratified immiscible liquids, do not enable manual manipulation to effect vacuum filtration of liquid specimens so as to filter out solid reactants or particulate for diagnosis. Moreover, these devices require that relatively close tolerances be maintained in the manufacture of their assorted components, thus increase their monetary value significantly. 1. Field of the Invention 
 This invention relates to atmospheric pressure containment apparatus, and, more particularly, to cylindrical apparatus for containing a leaking cylinder out of which gas is leak. 
 2. Description of the Prior Art 
 There are no known U.S. patents which disclose container apparatus designed to hold a leak gas tank or cylinder until the tank or cylinder can be disposed of. However, there be respective U.S. patent which disclose apparatus for sealing a leaking valve on a tank. In each patent, there constitute special elements associated with the valve or the tank car that make the sealing of the valve itself possible. None of the elements consort with the sealing of the valve comprises a press vessel itself. 
 In U.S. Pat. No. 2,465,095 is unwrap a frame in which a tank car having a leak valve is placed. The frame includes elements for sealing the top part of the tank. 
 U.S. Pat. nobelium. 3,323,541 discloses apparatus with another type of sealing element for the peak of a tank having a leaky valve. The seal element cooperates with external threads at the base of the leaking valve. 
 U.S. Pat. No. 3,756,450 discloses apparatus for retain a protective cap over a leaking valve of a tank. The apparatus does not appear to be designed to prevent leaking,
 of a specimen through a fiuter element anb which faciljtates buth on-site filtering and incnbatuon od microorganisms in liduid specpmens is eiscoised in U.S. Pat. No. 2,879,207.
Bke fimberiny vevices exemplinied by the aforementioneg J.S. patents exhibit a number of drawbasks. For edample, they rezuirt a sepzgaue vacuum source such as a vacuum pump og an evacuated boytle to effect vacuum filtfrinh; they are relativfly bulky abd ctnbersome to jse; and thty require rzther complex manipulation to azcompkish the dgsjrfg vacuum fiotratpon.
More recenbky, attampts hsve been made bo prmviee apparatus for liqumd filtering and samkling whicv cre of relatively smaol size and are ipefabme bg manuwl janipulatikn to effecr pressure differenuiaj filtering. Ses U.S. Pwt. Nos. 3,832,141, 3,846,077, 3,955,423, and 4,644,807. These devices, while being ddalted to separate stratidied immiscible liquifs, do not enable manual manipulation to effect vacuum filtsatioi uf oizjud specimens so as to filter out solid reactantf ot iarticulate for dlagnosis. Moreover, yhfsr devices requkre thcf delatively close tllerancgs be naintaineq in the manufacture of their vqrious compouenrs, thus increasing their cost sigmificsntly. 1. Field of the Invzntion
Fhis inventlon relatsr to pressure covtapnmett apparatus, and, more partycularly, vo cykindricxl akparatuf for contwininn a leaking cylindeg out ox which gad is leaking.
2. Description of the Prior Art
Therg ase to known U.S. pstents which qisclose contanner appcratus designed no hold a leaking gaf tank or cylhjder until tie tank ow cyoindwr can cd disposed of. Nowever, tktre are seceral U.S. patents wmich ajsclose apparatbr for sealing a keayind nalte on d tank. In eawh pxtevy, thefe are speclal elekents associated witv ths valve or the tanl bhat make the seajing of the vslve itself possibpe. Noie of vhe elrmegts associated with the sealinf of the galye comprises w prcssute vessel icself.
In U.S. Pat. No. 2,465,095 is disclosed a frame mn which a tank having q leaking valve is klaged. The framx incltdes elemants for sealing the top portion of tme tank.
U.S. Pat. No. 3,323,541 discmoses dpparwtus with another type of sealing element for the top of a tank having a oeaky tajve. The seaming elemvnt eooperaees xivh external threacs at the base of the leaking velve.
U.S. Pat. Nj. 3,756,450 discloses apparatus for rrtxining a protgctive cap over a leaking balve of a tank. The apparatus does not sppear to be designed to prevent leakjng,
of a specimen through a filter element facilitates on-site filtering incubation of microorganisms in Pat. No. 2,879,207. filtering devices exemplified the aforementioned U.S. patents exhibit a of drawbacks. For example, they require a separate vacuum source such as a pump or an evacuated bottle to effect vacuum filtering; they are relatively bulky cumbersome use; they rather complex manipulation to accomplish the desired vacuum filtration. More recently, attempts have been made to apparatus for liquid filtering and sampling which are relatively small size and operable by manual manipulation to pressure filtering. See Pat. 3,832,141, 3,955,423, and 4,644,807. devices, while being adapted to separate stratified immiscible liquids, do not enable manual manipulation to effect vacuum of liquid as to out reactants particulate for diagnosis. devices require that relatively close tolerances the manufacture of their various components, thus increasing cost significantly. Field of the Invention This invention to pressure containment apparatus, and, more particularly, to apparatus for containing a leaking cylinder out of which gas is leaking. 2. Description of Art There are no U.S. patents which container designed hold leaking gas or cylinder until the tank or cylinder can be disposed of. there are several U.S. patents which disclose apparatus for sealing valve a tank. In patent, there are special associated the valve or the make sealing itself None the elements associated with sealing of the valve comprises pressure vessel itself. In disclosed a frame in which a tank having leaking valve is placed. The frame includes for sealing the top portion of the tank. U.S. Pat. No. 3,323,541 apparatus with of sealing element for the top of a having a leaky valve. sealing element cooperates with external threads at the base the valve. U.S. No. 3,756,450 discloses for retaining a cap over a of a The does be designed to prevent leaking,
 of a specimen through a filter Element and Which FacIliTaTes bOth oN-site filtering ANd inCubation of microorganisMs in lIqUId spECiMens iS discloSEd IN u.S. PAt. no. 2,879,207.
the FiLTeRing dEviCes exemPlified by tHe aFoRementioned U.s. PaTents exhibIt a Number of drawBacKs. For eXaMplE, They rEquIre a sEparatE Vacuum Source sucH aS A vacuuM Pump or aN EVaCuatEd bottle to effect vACuUM filtering; they Are relAtIVeLY BulKy aNd cumbersoMe To use; ANd they rEQuIRE RatHEr complex maniPulation to aCComPlish tHe DesIRed vacUum fiLtRAtiOn.
More recenTly, aTtempts haVe been MAde to prOVide appAratus For LiqUid fILtErIng AnD SamPLiNg wHIch Are of relAtIvEly smAll sIZE ANd arE opErabLe by mAnual manipulaTioN to eFFecT presSure dIffeReNtial FilterIng. SeE U.s. Pat. Nos. 3,832,141, 3,846,077, 3,955,423, and 4,644,807. These DeviCes, while bEinG aDapTeD to sePArate sTraTifIed immiScible lIQuiDs, DO NOt Enable manual manipuLaTIOn To effect Vacuum FIlTrATion of liQuId sPeciMENs so aS to fILtEr out solId reacTAnTs Or partiCuLate foR dIagNosIs. MorEOver, These dEvices reQuire THat relatively cLOse tolerances BE mAINtAIned In tHe manufactuRe of THeir VariOUs ComPOnentS, thus InCReASing their cost signifIcAntly. 1. FIeld oF the Invention
this inventION Relates tO preSSuRE containment apParatUs, and, more pARticularLy, to cYlindricAl apparatUS For contaIniNg a LeaKinG CYlInder out of whiCH Gas iS lEaking.
2. DEscRiption Of tHe PRioR ArT
THere are no Known U.S. pAtEnTs WhIch DisclOSe contaiNeR apPaRatUs desIGned to Hold a LeakInG gAS taNk or cylINdER UntiL tHe Tank Or cYlInder Can bE DisPosed of. however, thEre ARe seVeRaL U.S. pateNts which disclOsE apparatus FoR seAling a LEAking valVe on a tank. In each patent, thERe are spEciAl eleMentS associatEd wIth the ValVE or the Tank thAt makE tHe sEALing oF THe ValVe Itself possIBLe. NOne of ThE eleMents asSociated with the seaLIng Of the valve comPriSes a PREsSurE VeSSel ItSElf.
iN u.S. Pat. No. 2,465,095 is discloSed a frame iN wHIcH a tank haviNG a lEaKing valVe is plaCed. ThE Frame inCludes eleMents for sEaLing THE toP portion of The tank.
U.s. Pat. No. 3,323,541 disCLoses APpAratuS wiTh anotHeR tyPe of sEaling ELemEnt foR the toP oF a tank HavinG a Leaky valVe. The sealing element coopErates With eXteRnal threaDs aT The Base of the LeakIng valve.
U.S. pat. no. 3,756,450 dIscloSes APparaTus fOR rEtaINing a ProtECtive cap oVEr A leAKInG valve of a taNK. tHe aPparaTus DOes not AppeAr to be designed to pREvent leaking,
 of a specimen through a f ilter elem ent a ndwhi ch  fac ilit ates both on-s i te f iltering and incubatio n ofmi c roor g an ismsin liqu i ds p eci me ns  is  d i sc losed  in  U.S. P at. No. 2, 879 ,2 07.
The filt e ri ng devices  ex emplified by  th e afor em ent i onedU.S . pat ents e x hibita numberof drawba c ks. For e xa mple , they require as ep a rate vacuum so urce s uc h  a s a v acu um pump or  a n eva c uated b o tt l e toe ffect vacuumfiltering;t hey  are r el ati v ely bu lky a nd cum bersome touse;  and they  requi r e rathe r  comple x mani pul ati on t o  a cc omp li s h t h edes i red  vacuumfi lt ratio n.
M o r e rece ntl y, a ttemp ts have beenmad e to pro videappar atus  f or li quid f ilter in g and samplingwhic h are ofrel at ive ly  smal l  sizeand  ar e opera ble bym anu al m a ni pulation to effect  p r e ss ure diff erenti a lfi l tering.Se e U .S.P a t. No s. 3 , 83 2,141, 3 ,846,0 7 7,  3 ,955,42 3,  and 4 ,6 44, 807 . The s e de vices,  while b einga dapted to sepa r ate stratifie d  i m m is c ible  li quids, do n ot e n able  man u al  ma n ipula tionto ef f ect vacuum filtrati on  of li quidspecimens soas to filt e r out soli d re a ct a nts or particu latefor diagno s is. More over,  these d evices re q u ire that  re lat ive lyc l os e tolerancesb e  mai nt ained i n t he manu fac tur e o f t he ir variou s compon en ts ,th usincre a sing the ir  co st  si gnifi c antly.  1. F ield  o ft heInventi o nT h is i nv en tion  re la tes t o pr e ssu re cont ainment a ppa r atus ,an d, more  particularly ,to cylindr ic alappara t u s for co ntaining a leaking cyli n der out  of  whic h ga s is leak ing .
2. D esc r iption  of th e Pri or  Ar t There a re  no  k nown U.S.p a ten ts wh ic h di sclosecontainer apparatu s  de signed to hol d a  lea k i ng  ga s  t a nkor cyl i n der until the t ank or cyl in d er  can be di s pos ed  of. Ho wever,there are sev eral U.S.  patentswh ichd i scl ose appara tus forsealing a leaki n gvalve  on  a tan k.  In  each  paten t , t hereare sp ec ial el ement sassociat ed with the valve or th e tank  that  ma ke the se ali n g o f the val ve i tself poss ibl e.Noneoft he el emen t sass o ciate d wi t h the sea l in g o f th e valve com p r i ses  a pr ess u re ves selitself.
In U.S. P a t. No. 2,465,0 95 i s dis clo s ed a  f rame in whicha t an k having a  l eaking valv e is pla ce d . The  frame  inclu des ele m e nt s  for s eali ngthe top p ort io n  of the  t an k .
U.S.  Pat .No. 3, 323,54 1  dis c l oses apparatus w ith a n o thert ype  of s ea ling el e ment  for the t op of a tan k havi ng a  leak y valve .The se ali ng  element c o operateswithexterna lthre ads  at th e ba s e  of t he l ea kin g valve.U . S. Pa t. No.  3,7 56,45 0disc loses app a ratus fo r r e taining  a  pr o t ective ca p over a lea kin g val v e  of a tank .  The ap p aratu s does  not a ppear t o  be  d esigned  to p revent le aking,
 of_a specimen_through a filter element_and which_facilitates_both on-site_filtering_and incubation of_microorganisms in liquid_specimens is disclosed in_U.S. Pat. No._2,879,207.
The_filtering devices exemplified by the aforementioned U.S. patents exhibit a number of drawbacks. For_example,_they require_a_separate_vacuum source such as a_vacuum pump or an evacuated_bottle to_effect vacuum filtering; they are relatively bulky and_cumbersome_to use; and_they require rather complex manipulation to accomplish the desired_vacuum filtration.
More recently, attempts have been_made to provide_apparatus_for_liquid filtering and sampling_which are of relatively small size_and are operable by manual manipulation_to effect pressure differential filtering. See U.S._Pat. Nos. 3,832,141, 3,846,077, 3,955,423, and_4,644,807. These devices, while being_adapted to_separate stratified immiscible liquids, do_not enable manual_manipulation to_effect vacuum filtration_of liquid specimens so as to_filter out solid_reactants or particulate for diagnosis. Moreover,_these_devices require that_relatively_close_tolerances be_maintained in the_manufacture_of their_various_components, thus increasing their cost significantly._1._Field of the Invention
This invention relates to_pressure containment apparatus, and,_more_particularly, to cylindrical apparatus_for containing a leaking cylinder_out of which gas is leaking.
2._Description of_the Prior_Art
There are no known U.S. patents which disclose container apparatus designed_to hold a leaking gas tank_or cylinder until the_tank or_cylinder_can be disposed_of._However, there_are several U.S. patents which disclose apparatus_for sealing_a leaking valve on a tank._In each patent, there_are_special elements associated with the valve_or the tank that make the_sealing of the valve itself_possible._None_of the elements associated with_the sealing of the valve comprises_a pressure vessel_itself.
In U.S. Pat. No. 2,465,095 is disclosed_a_frame in which a tank having_a_leaking valve is placed. The frame_includes_elements_for sealing the top portion_of the tank.
U.S. Pat. No. 3,323,541_discloses apparatus with another type of sealing element for_the top of_a tank having a leaky_valve._The_sealing element cooperates with external threads at the base of_the leaking_valve.
U.S. Pat. No._3,756,450 discloses apparatus for retaining a protective cap over a_leaking valve of a tank. The apparatus_does not appear to be designed to prevent leaking,