US1040730A

US1040730A - Valve or cover for tanks.

Info

Publication number: US1040730A
Authority: US
Inventors: Robert H Moore
Original assignee: AMERICAN CREOSOTING Co
Current assignee: AMERICAN CREOSOTING Co
Priority date: 1911-10-25
Filing date: 1911-10-25
Publication date: 1912-10-08
Anticipated expiration: 1929-10-08

Description

'R. H: MOORE. VAL TE OR COVER FOR TANKS. APPLICATION T111111) 001. 25; 1911.

1,040,7 30. Paten ted 001, s, 1912.

V Slum/$ 1,

Foerfi/V. Moore. I

wwwwow 1 NITED T TE ROBERT H. Moons, OFCHICAGO, riitintols, is 0 COMPANY, oncnxcAoo, nirimo'rs, 4 so VALVE on seven es-mag To all whom it may concern:

Be it known that--I, Ronsn'r' H. Moons, of Chicago, in the county of Cook and State of Illinois, ha ve 'inventedtwrtain new and use-- villact automatically under the conditions stated.

forth and particularly pointed out in the claims.

In the accompanying t-ional view;

Referring to the drawings, 1 designates a manhole ring or angle-iron of known con struct-ion, which in practice is secured to the top of an oil tank, such as is used in wood To a bracket 2 riveted tothis preservation. angle-iron a ring 3, forming part-of the top or cover, is lunged at 4. This ring 3 is designed to seat upon the upper edge. of angle-' iron 1, and its opening is closed by a disk 0 slightly larger than the diameterof said opening. This disk is-designed to extend in part beneath and in part above-ring 3 to. which .it forms the complementary ortionof the cover. For this purpose the iskj 5 is slightly deflected, as at (i. at a point to one side of the center of the disk, the upper segment of the latter being above ring 3, while the lower segu'ient is beneath the latter, the plane of the ring being intersected by-the defiection 6. The inner edge of the ring 3 is slightly cut away. as at 7; to allow the deflected portion of the disk to extend throughthe ring, to which latter the disk is hingedat 8, the axis of the hinges being on a line with the deflection. To the upper outer seg-- ment of the disk I attach counter-weight 9 which serves to normally hold the disk in.

closed position. that is to say. with the larger segmentfitted upwardly against its seat, and the smaller segment downwardly on its seat.

. Specification 6r remitt ng, I i Application filed October 25, 191 S F a-I F 56ir 9.-

the provision The invention will be hereinafter fu'llyyset.

draWingSQFigure 1 1s a plan VIEW. Fig. 2 1s a transverse secone one INDIANA;

as a whole by turning onhinge 4. Pics sure on theoutside,in consequence of a, partial vacuum within the tank, will'be relieved by the turning ofidiskf, on-its hinge, the external pressurelon the downwardly openmg segment overcoming the weight'of the in themselvesajqosu're for: the tank.

thou h ch structlon' fan simple'an'd highlyiefiic ent valye for manhole covers which will iactautomaticiilly to. rehcve any-excess of pressnre within or with I.cla ini fis.my'inyentioni% 1. Amanhole of war fortanks comprisin a ring, hinged aEOneside to the" tank, an a.

ring and disk"beingyconstriicted, and arra ng'ed I to eonj ointly :opeributwardl under an excess of-pressure from within't e tank,

in tlhe event"of"a'ipartialfvacuum within the 2, Amahhole "cover forftanks comprising a rmgdeslgn'ed to be' hinged at one side, a

disk titting againstithe under side of said ring, the reni'atmng'portion "of said disk fitting against the upper-sidethereofisaid ring and disk being moved as a whole under an excess of pressure within theta-11k, and said disk beingamo'ved independently of. the ring it: :tl-he ev'cnt of a jpartial vacnum within the 3, i 3. A manholecover for tanks com risinga .disk coinprisingtwoara-llell segments connected by-a de'tlecte portlon, one of'said other above the ring, the defictedport-ion. of

said .disk being h aged to said ring in line with the deflected portion of the ,disk.

4. A manhole cover for tanks comprising aring designed to-b' hin 'ed at one side, a disk com 'u isi'ng two'paralel segments 00?. .nected by a deflected portion, one of said segments being beneath said ring and the other smaller segment. 5 The two parts constitute sages inay ibe made in the; con.- I rt m n OfTP T i manifestitha't fIfhave' ovided an. extremely disk closing the" opening'vin said ring, said ,Saiddisk being pivoted 'on said ring andconstructedflnd arrahgd'to' open inwardly segments being beneath saitfring and the the disk intersecting the planes-oi the riiig,

above the ring. said deflected portion being- It willbe'sgeen underan; excess of pressure within the tank, acting'against the underside=of the cover, the latterwill open out theQtanktendin'g toinjnrethe casing,-

disk pivoted to s aid ring, a portion of said ring designed to be hinged, at one, si e, and :1

:itbne s ide ef the center -of the disk andde In testimony whereof, I: haa re signed this I signed to intersect the plane of the ring, Specification.1n -the presence of two sub- 10 meefis pIiveteHy eennlegsigg tlga disk to the" scnbing witnesses ring in;- ine-With Sai e eete portion-the 5 larger segment of the disk being beneath the ROBERT M00311 rin and the smaller segment above the ring, Witnesses: an -a. qounterweight attached to said smaller J. H. DURHAM, segment- G. G. Buns.