US3131925A - Digester cap assembly with sliding cap - Google Patents
Digester cap assembly with sliding cap Download PDFInfo
- Publication number
- US3131925A US3131925A US155099A US15509961A US3131925A US 3131925 A US3131925 A US 3131925A US 155099 A US155099 A US 155099A US 15509961 A US15509961 A US 15509961A US 3131925 A US3131925 A US 3131925A
- Authority
- US
- United States
- Prior art keywords
- levers
- pair
- closure member
- cap
- guides
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J3/00—Processes of utilising sub-atmospheric or super-atmospheric pressure to effect chemical or physical change of matter; Apparatus therefor
- B01J3/03—Pressure vessels, or vacuum vessels, having closure members or seals specially adapted therefor
Definitions
- a more specific object of the invention is to provide a cap assembly in which a .cap is slidable back and forth from its closed position, and in which there is a mechanism for forcing the cap against its seat in the closed position of the cap.
- a further object of the invention is to provide an arrangement as just described having a novel relationship of the mechanism and the mounting arrangement for the cap.
- FIG. 1 is a plan View of an assembly embodying the concepts of the present invention, parts being broken away for convenience in illustration;
- FIG. 2 is a vertical section taken along line 2-2 of FIG. 1;
- FIG. 3 is a view of the end of the assembly adjacent the arrows 33 of FIG. 1, parts being broken away for convenience in illustration;
- P16. 4 is a diagrammatic side elevation view showing part of the lever system of the invention.
- the numeral 11 indicates diagrammatically a conventional digester vessel having a flange 13 defining a mouth through which material is dumped into the vessel.
- This flange is most frequently formed with peripheral slots to receive swing bolts of a cap.
- the slots receive bolts (not shown) which secure a lower flange 17 of an adapter, generally entitled 19, to the flange 13 in register therewith.
- the adapter includes a riser or tubular member 21 having the flange 17 at its lower end and having at its upper end an upper flange 23 machined to form a seat 25 for a circular cap 33.
- the cap may also be considered as a cover or closure member.
- the cap 33 is connected to a linkage system L (FIG. 1)
- lug 53 which is fixedly secured to, or formed integrally with, the cap 33 near an edge of the cap.
- the cap 33 When the actuator 47 is energized one Way, the cap 33 will be pulled out of register with the digester vessel, and when energized the opposite way, the cap will be moved back to a position in register with the digester vessel.
- the cap 33 has an eye 61 pivotally receiving a fulcrum shaft 63 the ends of which extend through and are pinned to a pair of spaced inner levers 65 at places intermediate the ends of the inner levers.
- the ends of the levers 65 most remote from the fulcrum shaft 63 are fixedly joined by a base plate es to which the cylinder of a piston and cylinder type actuator 67 is secured.
- the actuator has a piston rod 69 (FIG. 3) pivotally connected at 71 to a lug 73 on the cap 33.
- a safety stop bolt 7 0 threadedly extends through the plate 66 to limit the movement of the actuator toward the cap.
- the opposite ends of the levers 65 have horizontally oversize slots 74 (FIGS. 1 and 4) receiving a pivot shaft 75 which extends through and is pinned to the adjacent ends of a pair of intermediate levers 77 straddling the inner levers 65.
- the other ends of the levers 77 embrace a slide 79 and receive the ends of a fulcrum shaft 31 (FIG. 3) which projects through the slide and levers and is pinned to the latter.
- Wear strips 82 are preferably secured to the inner horizontal faces of the channel members 35 in positions next to the upper and lower inner faces of the slide 79.
- a pivot shaft 83 (FIG. 1) extends through and is pinned to the levers 77 at a place between the actuator 67 and the shaft 81.
- the ends of the shaft 83 are pivotally received by a pair of standards 85 which are fixedly secured to or integrally formed with the cap 33.
- a pivot shaft 97 which extends through and is pinned to the levers 93 and is pivotally received by a pair of standards 99 disposed in flanking relation to the levers 93 and fixedly secured or integrally formed with the cap 33.
- Jam nuts 193 on the bolts hold them in desired positions of adjustment.
- the outboard ends of the channel members 35 are connected by a cross-piece 45 (FIG. 1) which pivotally supports a double acting hydraulic piston and cylinder actuator 47.
- the actuator has a piston rod 49 pivotally con- Flexible conduits (not shown) are provided to allow the cap and its actuator to move back and forth relative to a stationary control valve (not shown).
- the actuator 67 is energized in a manner to extend the same. Extension of the actuator 67 tends to lower the left hand ends of the inner levers as the parts are shown in FIG. 4, the fulcrum shaft 63 under this condition acts as the fulcrum of a first class lever system.
- a closure assembly for the mouth of a pressure vessel comprising pair of parallel spaced straight guides located one on either side of said mouthwith the axis of said mouth being located within the longitudinal confines of saideguides and perpendicular to the plane of said guides,
- said mounting means supporting said cover for movement a direction parallel to its axis to effect seating of said cover on said month, said mounting means including a pair of levers, one
- each lever being connected to its slide for pivotal move ment about an axis parallel to said guides,
- levers also being pivotally connected to said cover
- a closure assembly for the mouth of a pressure vessel comprising I a pair of parallel spaced straight guides located one of said guides and perpendicular to the plane of said guides,
- said mounting means supporting said cover for movement in a direction parallel to its axis to efiect seating of said cover on said mouth
- said mounting means including a pair of levers, one
- each lever being connected at one end to its slide for pivotal movement about an axis parallel to said guides, V
- levers also being pivotally connected at places intermediate the ends thereof to said cover,
- a pressure vessel closure assembly for a seat of a pressure vessel comprising a closure member for seating on said seat,
- closure member moving means for moving said closure member toward and away from said seat, said means comprising a pair of levers pivotally mounted at certain ends there prising,
- guide means including a pair of parallel spaced straight guides located one on either side of said mouth with the axis of said mouth being located within the longitudinal confines of said guides and perpendicular to the plane of said guides,
- said mounting means supporting said closure member for movement in a direction parallel to its axis to effect seating of said closure member on said mouth
- said mounting means including a first pair of spaced parallel levers pivotally connected at one set of ends to one slide and a second pair of spaced parallel levers pliitotally connected at one set of ends to said other s e,
- said second pair of levers being disposed between the levers of said first pair
- saidclosure member having a first pair of spaced fixed elements directly pivotally connected to said first levers at places intermediate the length of said first levers, e e 7 said closure member having a second pair of spaced fixed elements directly pivotally connected to. said second leversfat places intermediate the length of said second levers, 7
- land actuating means connecting the free ends of said other pair of levers to said closure member tfor effecting movement of the just named free ends toward said closure member to effect bodily movement of said closure member one way, and for etfecting movement of said just named free ends away from said closure member to effect bodily movement of said closure member the opposite way.
- a closure assembly for a mouth to be closed comguide means including a pair of parallel spaced straight guides located one on either side of said mouth with the axis of said mouth being located within the longitudinal confines of said guides and perpendicular to the plane of said guides,
- saidmountmg means supporting said closure member for movement in a direction parallel to its axis to effect seating of said closure member on said mouth
- said mounting means including a first pair of spaced parallel levers pivotally connected at one set of ends to one slide and a second pair of spaced parallel levers pivotally connected at one set of ends to said other slide,
- said second pair of levers being disposed between the levers of said first pair
- closure member having a first pair of spaced fixed elements directly pivotally connected to said first levers at places intermediate the length of said first levers,
- closure member having a second pair of spaced fixed elements directly pivotally connected to said second levers at places intermediate the length of said second levers,
- said actuating means comprising a third pair of levers disposed between the levers of said second pair,
- said third levers being pivotally mounted intermediate the end thereof on said closure member
- a closure structure for an opening comprising,
- said guide means including a pair of spaced slides
- said mounting means including a first pair of spaced parallel levers pivotally connected at one set of ends to one slide and a second pair of spaced parallel levers pivotally connected at one set of ends to said other slide,
- said second pair of levers being disposed between the levers of said first pair
- closure member having a first pair of spaced fixed elements directly pivotally connected to said first levers at places intermediate the length of said first levers,
- closure member having a second pair of spaced fixed elements directly pivotally connected to said second levers at places intermediate the length of said second levers,
- a closure structure for an opening comprising,
- said guide means including a pair of spaced slides
- said mounting means including a first pair of spaced parallel levers pivotally connected at one set of ends to one slide and a second pair of spaced parallel levers pivotally connected at one set of ends to said other slide,
- said second pair of levers being disposed between the levers of said first pair
- closure member having a first pair of spaced fixed elements directly pivotally connected to said first levers at places intermediate the length of said first levers,
- closure member having a second pair of spaced fixed elements directly pivotally connected to said second levers at places intermediate the length of said second levers,
- said actuating means comprising a third pair of levers disposed between the levers of said second pair,
- said third levers being pivotally mounted intermediate the end thereof on said closure member
- closure member having a first pair of spaced fixed elements directly pivotally connected to said first V levers at places intermediate'the length of said first levers,
- closure member having a second pair of spaced fixed elements directly pivotally connected to said second levers at places intermediate the length of said second levers,
- a closure structure for an opening comprising,
- said means including a firstpair of spaced parallel levers pivotally mounted at one set of ends and a second pair of levers pivotally mounted at one set of ends at a place spaced from the place of mounting of said first levers,
- said closure member having a first pair of spaced fixed elements directly pivotally connected to said first levers at places intermediate the length of said first levers, v 7
- closure member having a second pair of spaced fixed elements directly pivotallyconnected to said second levers at places intermediate the length of said second levers,
- said actuating means comprising,
- said third levers being pivotally mounted intermediate the end thereof on said closure member, 7
- one set ofends of said third levers being connected to the free ends of said other pair of levers
- a closure, structure for an opening comprising,
- said guide means including a pair of spaced slides
Description
May 5, 1964 J. N. COATS DIGESTER CAP ASSEMBLY WITH SLIDING CAP 2 Sheets-Sheet 1 Filed Nov. 27, 1961 JOHN N. COATS.
INVENTOR.
BUCKHORN, CHEATHAM 8 BLORE ATTORNEYS May 5, 1964 J. N. COATS DIGESTER CAP ASSEMBLY WITH SLIDING CAP 2 Sheets-Sheet 2 Filed NOV. 27, 1961 JOHN N. COATS.
INVENTOR.
BUCKHORN, CHEATHAM 8 BLORE ATTORNEYS United States Patent 3,131,925 DIGESTER CAP ASSEMBLY WIIi-I SLIDENG CAP John N. Coats, 2910 SW. Wemhly Park Drive, Lake Gswego, Greg. Filed Nov. 27, 1961, Ser. No. 155,1)99 19 Claims. (Cl. 268-50) This invention relates to a digester cap assembly.
Prior digester cap assemblies have been defective in several respects. The multiple swing bolt type is not only expensive but requires considerable time to open and close. The type having a simple latch to clamp a hinged cap closed has not proved satisfactory in high pressure installations because the clamping pressure is applied only at one, or at most, two places. Hence leakage sometimes occurs.
It is a main object of the present invention to provide a digester cap assembly overcoming the above objections, and particularly to provide a digester cap assembly in which an effective clamping force is distributed over the cap.
A more specific object of the invention is to provide a cap assembly in which a .cap is slidable back and forth from its closed position, and in which there is a mechanism for forcing the cap against its seat in the closed position of the cap.
A further object of the invention is to provide an arrangement as just described having a novel relationship of the mechanism and the mounting arrangement for the cap.
Various other objects of the invention will be apparent from the following description taken in connection with the accompanying drawings wherein:
FIG. 1 is a plan View of an assembly embodying the concepts of the present invention, parts being broken away for convenience in illustration;
FIG. 2 is a vertical section taken along line 2-2 of FIG. 1;
FIG. 3 is a view of the end of the assembly adjacent the arrows 33 of FIG. 1, parts being broken away for convenience in illustration; and
P16. 4 is a diagrammatic side elevation view showing part of the lever system of the invention.
Referring to FIG. 2, the numeral 11 indicates diagrammatically a conventional digester vessel having a flange 13 defining a mouth through which material is dumped into the vessel. This flange is most frequently formed with peripheral slots to receive swing bolts of a cap. In the present construction, the slots receive bolts (not shown) which secure a lower flange 17 of an adapter, generally entitled 19, to the flange 13 in register therewith. The adapter includes a riser or tubular member 21 having the flange 17 at its lower end and having at its upper end an upper flange 23 machined to form a seat 25 for a circular cap 33. The cap may also be considered as a cover or closure member.
The cap 33 is connected to a linkage system L (FIG. 1)
nected at 51 to a lug 53 which is fixedly secured to, or formed integrally with, the cap 33 near an edge of the cap.
When the actuator 47 is energized one Way, the cap 33 will be pulled out of register with the digester vessel, and when energized the opposite way, the cap will be moved back to a position in register with the digester vessel.
The relationship of the various parts of the linkage system L is best shown diagrammatically in FIG. 4, but reference to the other figures will be made to illustrate the actual, as contrasted to diagrammatic, form of the parts. Referring to FIG. 1, the cap 33 has an eye 61 pivotally receiving a fulcrum shaft 63 the ends of which extend through and are pinned to a pair of spaced inner levers 65 at places intermediate the ends of the inner levers. The ends of the levers 65 most remote from the fulcrum shaft 63 are fixedly joined by a base plate es to which the cylinder of a piston and cylinder type actuator 67 is secured. The actuator has a piston rod 69 (FIG. 3) pivotally connected at 71 to a lug 73 on the cap 33. A safety stop bolt 7 0 (FIG. 3) threadedly extends through the plate 66 to limit the movement of the actuator toward the cap. The opposite ends of the levers 65 have horizontally oversize slots 74 (FIGS. 1 and 4) receiving a pivot shaft 75 which extends through and is pinned to the adjacent ends of a pair of intermediate levers 77 straddling the inner levers 65. The other ends of the levers 77 embrace a slide 79 and receive the ends of a fulcrum shaft 31 (FIG. 3) which projects through the slide and levers and is pinned to the latter. Wear strips 82 (FIG. 3) are preferably secured to the inner horizontal faces of the channel members 35 in positions next to the upper and lower inner faces of the slide 79.
A pivot shaft 83 (FIG. 1) extends through and is pinned to the levers 77 at a place between the actuator 67 and the shaft 81. The ends of the shaft 83 are pivotally received by a pair of standards 85 which are fixedly secured to or integrally formed with the cap 33.
Inwardly of the shaft 83, that is inwardly toward the axis of the cap, there is a pair of pivot shafts 91 pinned to the levers 77 and received by horizontally oversize slots 92 formed in one set of ends of a pair of outer levers 93 which straddle the intermediate levers 77. The opposite ends of the levers 93 receive and are pinned to a fulcrum shaft 95 which is pivotally received by a second slide, also numbered 79, disposed in the associated guide 35. Just inwardly of the fulcrum shaft 95 is a pivot shaft 97 which extends through and is pinned to the levers 93 and is pivotally received by a pair of standards 99 disposed in flanking relation to the levers 93 and fixedly secured or integrally formed with the cap 33.
Referring again to FIG. 1, a pair of stop bolts 161,
V threadedly pass through the end pieces 41 and act as adjustable stops to ensure register of the cap 33 when it is returned from its inoperative position to its operative position. Jam nuts 193 on the bolts hold them in desired positions of adjustment.
which is to be described in detail presently and which is I addition have depending portions 37 secured to bracketarms 38 which fit between and are secured to the flanges 17 and 23. End pieces 41 (FIG. 3) close one set of ends of the channel members 35 and will be mentioned further hereinafter.
The outboard ends of the channel members 35 are connected by a cross-piece 45 (FIG. 1) which pivotally supports a double acting hydraulic piston and cylinder actuator 47. The actuator has a piston rod 49 pivotally con- Flexible conduits (not shown) are provided to allow the cap and its actuator to move back and forth relative to a stationary control valve (not shown). Referring to FIG. 4, after the cap is returned to its operative position over the flmge 23, the actuator 67 is energized in a manner to extend the same. Extension of the actuator 67 tends to lower the left hand ends of the inner levers as the parts are shown in FIG. 4, the fulcrum shaft 63 under this condition acts as the fulcrum of a first class lever system. Lowering of the left hand end of the levers 65 tends to lower the left hand ends of the intermediate lever 77. Since the fulcrum shaft 81 is bodily stationary, this means that a downward force is exerted by means of the pivot shaft 83 on the standards and a downward force is exerted on the right hand ends of the levers 93 through =3 the medium of the pivot shafts 91. A downward force exerted on the right hand ends of the levers 93 will exert a downward force on the standards 99 through the medium of the pivot shaft 97, with the levers 93 acting and the levers 77 acting as secondclasslevers. There is thus created downward forces on the standards 99, the standards 85, and the hydraulic actuator 67, and because of the resistance of upward movement of the left hand ends of the lever 77, downward pressure is created on the eye 61. 'With the specific spacing of the standards on the cap shown, there are provided seven spaced points of downhand ends of the outer levers 93 create an upward force on the standards 99. The total result is that the cap is.
lifted sufiicien-tly to allow it to be slid or moved to an inoperative position.
The particular seal to be employed between the cap 33 and the flange 23 has not been as yet described, and as a matter of fact, it could be of any particular form. For
instance, it could be an O ring recessed in the surface of the cap, or even an O ring recessed in the upper surface of the flange 23. Or, it could be a gasket strip carried by either flange or cap or merely disposed between the two. in any' event, when reference in the claims is made to the cap seating on its seat, the seat is to be considered as the fixed structure against which the cap is pressed; If a gasket happens to be secured against the upper surface of the flange, the seat would be the flange andits gasket. If the flange does not have a gasket, the surface of the flange is considered as the seat. flange has one or more rings, the flange surface and If the the 0 rings are considered as a seat. 7
While, it has not been mentioned that there are wear strips tor the other slide 79., the associated guide does have wear strips.
Having described the invention in what is considered to be the preferred embodiment thereof, it is desired that it be understood that the invention is not to be limited other than by the provisions of the following claims.
I claim: 7
'1. A closure assembly for the mouth of a pressure vessel, comprising pair of parallel spaced straight guides located one on either side of said mouthwith the axis of said mouth being located within the longitudinal confines of saideguides and perpendicular to the plane of said guides,
a pair of slides, 'one for each of said guides and slid.-
able along said guides, a cover tor said seat,
means mounting said cover on said slides with the axis, of said cover parallel to the axis of said vessel mouth,
said mounting means supporting said cover for movement a direction parallel to its axis to effect seating of said cover on said month, said mounting means including a pair of levers, one
for each slide, each lever being connected to its slide for pivotal move ment about an axis parallel to said guides,
said levers also being pivotally connected to said cover,
and means interconnecting said levers to efiect movement of said levers relativeto one another to cause seating and unseating of saidcover. 2,. A closure assembly for the mouth of a pressure vessel, comprising I a pair of parallel spaced straight guides located one of said guides and perpendicular to the plane of said guides,
a pair of slides, one for each of said guides and slidable along said guides,
a'cover for said seat,
means mounting said cover on said slides with the axis of said cover parallel to the axis of said vessel mouth,
said mounting means supporting said cover for movement in a direction parallel to its axis to efiect seating of said cover on said mouth,
said mounting means including a pair of levers, one
for each slide,
each lever being connected at one end to its slide for pivotal movement about an axis parallel to said guides, V
said levers also being pivotally connected at places intermediate the ends thereof to said cover,
and means interconnecting the remaining ends of said levers and said cover to efiect movement of said levers relative to one another to cause seating and unseating of said cover. 3. A pressure vessel closure assembly for a seat of a pressure vessel, comprising a closure member for seating on said seat,
closure member moving meansfor moving said closure member toward and away from said seat, said means comprising a pair of levers pivotally mounted at certain ends there prising,
guide means including a pair of parallel spaced straight guides located one on either side of said mouth with the axis of said mouth being located within the longitudinal confines of said guides and perpendicular to the plane of said guides,
a pair of slides, one for each of said guides'and slidable along said guides, 1
a closure member for said seat,
means mounting said closure member on said slides with the axis of said closure member parallel to the,
axis of said vessel month,
said mounting means supporting said closure member for movement in a direction parallel to its axis to effect seating of said closure member on said mouth,
said mounting means including a first pair of spaced parallel levers pivotally connected at one set of ends to one slide and a second pair of spaced parallel levers pliitotally connected at one set of ends to said other s e,
said second pair of levers being disposed between the levers of said first pair,
all the above named levers extending at right angles .to said guide means,
saidclosure member having a first pair of spaced fixed elements directly pivotally connected to said first levers at places intermediate the length of said first levers, e e 7 said closure member having a second pair of spaced fixed elements directly pivotally connected to. said second leversfat places intermediate the length of said second levers, 7
means pivotally connecting the free ends of one pair of levers to the other pair of levers at a place which is intermediate the length of the latter and which is spaced from the fixed elements associated with such other pair of levers, 7
land actuating means connecting the free ends of said other pair of levers to said closure member tfor effecting movement of the just named free ends toward said closure member to effect bodily movement of said closure member one way, and for etfecting movement of said just named free ends away from said closure member to effect bodily movement of said closure member the opposite way.
5. A closure assembly for a mouth to be closed comguide means including a pair of parallel spaced straight guides located one on either side of said mouth with the axis of said mouth being located within the longitudinal confines of said guides and perpendicular to the plane of said guides,
a pair of slides, one for each of said guides and slidable along said guides,
a closure member for said seat,
means mounting said closure member on said slides with the axis of said closure member parallel to the axis of said vessel mouth,
saidmountmg means supporting said closure member for movement in a direction parallel to its axis to effect seating of said closure member on said mouth,
said mounting means including a first pair of spaced parallel levers pivotally connected at one set of ends to one slide and a second pair of spaced parallel levers pivotally connected at one set of ends to said other slide,
said second pair of levers being disposed between the levers of said first pair,
all the above named levers extending at right angles to said guide means,
said closure member having a first pair of spaced fixed elements directly pivotally connected to said first levers at places intermediate the length of said first levers,
said closure member having a second pair of spaced fixed elements directly pivotally connected to said second levers at places intermediate the length of said second levers,
means pivotally connecting the free ends of one pair of levers to' the other pair of levers at a place which is intermediate the length of the latter and which is spaced from the fixed elements associated with such other pair of levers,
and actuating means connecting the free ends of said other pair of levers to said closure member for effecting movement of the just named free ends toward said closure member to effect bodily movement of said closure member one way, and for eilecting movement of said just named free ends away from said closure member to eiiect bodily movement of said closure member the opposite way,
said actuating means comprising a third pair of levers disposed between the levers of said second pair,
said third levers being pivotally mounted intermediate the end thereof on said closure member,
one set of ends of said third levers being connected to the free ends of said other pair of levers,
and operating means interconnecting the remaining ends of said third levers to said closure member to effect movement of such remaining ends toward and away from said closure member and thereby effect bodily movement in opposite Ways of said closure member.
6. A closure structure for an opening comprising,
a closure member,
guide means for guiding said closure member to and from a position in register with said opening,
said guide means including a pair of spaced slides,
mounting means mounting said closure member on said slides for movement relative thereto,
said mounting means including a first pair of spaced parallel levers pivotally connected at one set of ends to one slide and a second pair of spaced parallel levers pivotally connected at one set of ends to said other slide,
said second pair of levers being disposed between the levers of said first pair,
all the above named levers extending at right angles to said guide means,
said closure member having a first pair of spaced fixed elements directly pivotally connected to said first levers at places intermediate the length of said first levers,
said closure member having a second pair of spaced fixed elements directly pivotally connected to said second levers at places intermediate the length of said second levers,
means pivotally connecting the free ends of one pair of levers to the other pair of levers at a place which is intermediate the length of the latter and which is spaced from the fixed elements associated with such other pair of levers,
and actuating means connecting the free ends of said other pair of levers to said closure member for effecting movement of the just named free ends toward said closure member to efiect bodily movement of said closure member one way, and for effecting movement of said just named free ends away from said closure member to efiect bodily movement of said closure member the opposite way.
7. A closure structure for an opening comprising,
a closure member,
guide means for guiding said closure member to and from a position in register with said opening,
said guide means including a pair of spaced slides,
mounting means mounting said closure member on said slides for movement relative thereto,
said mounting means including a first pair of spaced parallel levers pivotally connected at one set of ends to one slide and a second pair of spaced parallel levers pivotally connected at one set of ends to said other slide,
said second pair of levers being disposed between the levers of said first pair,
all the above named levers extending at right angles to said guide means,
said closure member having a first pair of spaced fixed elements directly pivotally connected to said first levers at places intermediate the length of said first levers,
said closure member having a second pair of spaced fixed elements directly pivotally connected to said second levers at places intermediate the length of said second levers,
means pivotally connecting the free ends of one pm'r of levers to the other pair of levers at a place which is intermediate the length of the latter and which is spaced from the fixed elements associated with such other pair of levers,
and actuating means connecting the free ends of said other pair of levers to said closure member for elfecting movement of the just named free ends toward said closure member to effect bodily movement of said closure member one way, and for effecting movement of said just named free ends away from said closure member to effect bodily movement of said closure member the opposite Way,
said actuating means comprising a third pair of levers disposed between the levers of said second pair,
said third levers being pivotally mounted intermediate the end thereof on said closure member,
one set of ends of said third levers being connected to the free ends of said other pair of levers,
and operating means interconnecting the remaining ends of said third levers to said closure member to levers pivotally mounted at one set of ends and a? second pair of levers pivotally mounted at one set of ends at a place spaced from the place of-mounting of said first levers,
said second levers being disposed between said first levers,
said closure member having a first pair of spaced fixed elements directly pivotally connected to said first V levers at places intermediate'the length of said first levers,
said closure member having a second pair of spaced fixed elements directly pivotally connected to said second levers at places intermediate the length of said second levers,
means pivotally connecting the free ends of one pair of levers to'the other pair of levers at a place which is intermediate the length of the latter and which is spaced from the fixed elements associated with such other pair of levers,
and actuating means connecting the free ends of said other pair of levers to said closure member for effecting movement of the just named free ends toward said closure member to efiect bodily movement of said closure member one way, and for efiecting movement of said just named free ends away from said closure member to effect bodily movement of said closure member the opposite way.
9. A closure structure for an opening comprising,
a closure member,
means for moving said closure member toward and away from said opening, 7
said means including a firstpair of spaced parallel levers pivotally mounted at one set of ends anda second pair of levers pivotally mounted at one set of ends at a place spaced from the place of mounting of said first levers,
said second levers being disposed between said first levers,
said closure member having a first pair of spaced fixed elements directly pivotally connected to said first levers at places intermediate the length of said first levers, v 7
said closure member having a second pair of spaced fixed elements directly pivotallyconnected to said second levers at places intermediate the length of said second levers,
a means pivotally connecting the free ends of one pair V of levers to the other pair of levers at a place which is intermediate the length of the latter and which is spaced from the fixed elements associated with such other pair of levers,
and actuating means connecting the free ends of said other pair of levers to said closure member for effecting movement of the just named free endstoward said closure member to effect bodily movement of said closure member one way, and for effecting movement of said just named free ends away from said closure member to eliect bodily movement of said closure member the. opposite way,
said actuating means comprising,
a third pair of levers disposed between the levers of said second pair,
said third levers being pivotally mounted intermediate the end thereof on said closure member, 7
one set ofends of said third levers being connected to the free ends of said other pair of levers,
and operating means interconnecting the. remaining ends of said third levers to said closure member to eifect movement of such remaining ends toward and away from said closure member and thereby effect bodily movement in opposite ways of said closure member. V a
10. A closure, structure for an opening comprising,
a closure member,
guide means for guiding said closure member to and from a position in register with said opening,
7 said guide means including a pair of spaced slides,
mounting means mounting said closure member on said References Cited in the file of this patent UNITED STATES PATENTS 714,296 Giesler Nov. 25, 1902 2,166,999 Needham et al. July 25, 1939 2,227,712 Hackley Jan. 7, 1941 2,285,935 Meyer June 9, 1942 2,546,760 LeClaire Mar. 27, 1951 2,556,578 Dohm June 12, 1951 2,841,308 Weicker July 1, 1958 2,923,430 Stengele Feb. 2, 1960
Claims (1)
1. A CLOSURE ASSEMBLY FOR THE MOUTH OF A PRESSURE VESSEL, COMPRISING A PAIR OF PARALLEL SPACED STRAIGHT GUIDES LOCATED ONE ON EITHER SIDE OF SAID MOUTH WITH THE AXIS OF SAID MOUTH BEING LOCATED WITHIN THE LONGITUDINAL CONFINES OF SAID GUIDES AND PERPENDICULAR TO THE PLANE OF SAID GUIDES, A PAIR OF SLIDES, ONE FOR EACH OF SAID GUIDES AND SLIDABLE ALONG SAID GUIDES, A COVER FOR SAID SEAT, MEANS MOUNTING SAID COVER ON SAID SLIDES WITH THE AXIS OF SAID COVER PARALLEL TO THE AXIS OF SAID VESSEL MOUTH, SAID MOUNTING MEANS SUPPORTING SAID COVER FOR MOVEMENT IN A DIRECTION PARALLEL TO ITS AXIS TO EFFECT SEATING OF SAID COVER ON SAID MOUTH, SAID MOUNTING MEANS INCLUDING A PAIR OF LEVERS, ONE FOR EACH SLIDE, EACH LEVER BEING CONNECTED TO ITS SLIDE FOR PIVOTAL MOVEMENT ABOUT AN AXIS PARALLEL TO SAID GUIDES, SAID LEVERS ALSO BEING PIVOTALLY CONNECTED TO SAID COVER, AND MEANS INTERCONNECTING SAID LEVERS TO EFFECT MOVEMENT OF SAID LEVERS RELATIVE TO ONE ANOTHER TO CAUSE SEATING AND UNSEATING OF SAID COVER.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US155099A US3131925A (en) | 1961-11-27 | 1961-11-27 | Digester cap assembly with sliding cap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US155099A US3131925A (en) | 1961-11-27 | 1961-11-27 | Digester cap assembly with sliding cap |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US3131925A true US3131925A (en) | 1964-05-05 |
Family
ID=22554106
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US155099A Expired - Lifetime US3131925A (en) | 1961-11-27 | 1961-11-27 | Digester cap assembly with sliding cap |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US3131925A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3386206A (en) * | 1966-02-01 | 1968-06-04 | Loveless Marion Walter | Closure for large diameter opening of a pressure vessel |
| US4192849A (en) * | 1977-11-28 | 1980-03-11 | Siemens Aktiengesellschaft | Pressure digester |
| US6105805A (en) * | 1998-08-26 | 2000-08-22 | Labelle; Robert Jacques | Port closure for a tank |
| US6173854B1 (en) * | 1998-09-23 | 2001-01-16 | Robert Jacques Labelle | Post closure for a tank and method of retrofitting a tank with the same |
| US6196590B1 (en) * | 1999-07-09 | 2001-03-06 | Sun Y. Kim | Slide hatch for bulk carrier |
| US6561373B1 (en) * | 2001-07-06 | 2003-05-13 | Roland D. Chapin | Tanker hatch system |
| US6568552B1 (en) * | 1997-11-28 | 2003-05-27 | Mattson Technology, Inc. | Systems and methods for low contamination, high throughput handling of workpieces for vacuum processing |
| US20030136343A1 (en) * | 2002-01-18 | 2003-07-24 | Shen Tsung-Lin | Apparatus for sealing a vacuum chamber |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US714296A (en) * | 1902-07-11 | 1902-11-25 | Stilwell Bierce & Smith Vaile Company | Cover for tanks. |
| US2166999A (en) * | 1936-12-24 | 1939-07-25 | Smith Corp A O | Quick opening pressure vessel |
| US2227712A (en) * | 1937-04-14 | 1941-01-07 | Roy C Hackley | Closure and actuating mechanism therefor |
| US2285935A (en) * | 1939-05-05 | 1942-06-09 | Us Hoffman Machinery Corp | Closure for washing machine cylinders |
| US2546760A (en) * | 1944-09-20 | 1951-03-27 | Harry F Joesting | Fastener for pressure doors |
| US2556578A (en) * | 1948-11-26 | 1951-06-12 | Dohm & Nelke Inc | Closure mechanism for pressure vessels |
| US2841308A (en) * | 1954-12-23 | 1958-07-01 | American Machine & Metals | Pressure vessel closure |
| US2923430A (en) * | 1957-09-12 | 1960-02-02 | Filtrox Werk Ag | Apparatus for applying and lifting heavy covers on containers |
-
1961
- 1961-11-27 US US155099A patent/US3131925A/en not_active Expired - Lifetime
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US714296A (en) * | 1902-07-11 | 1902-11-25 | Stilwell Bierce & Smith Vaile Company | Cover for tanks. |
| US2166999A (en) * | 1936-12-24 | 1939-07-25 | Smith Corp A O | Quick opening pressure vessel |
| US2227712A (en) * | 1937-04-14 | 1941-01-07 | Roy C Hackley | Closure and actuating mechanism therefor |
| US2285935A (en) * | 1939-05-05 | 1942-06-09 | Us Hoffman Machinery Corp | Closure for washing machine cylinders |
| US2546760A (en) * | 1944-09-20 | 1951-03-27 | Harry F Joesting | Fastener for pressure doors |
| US2556578A (en) * | 1948-11-26 | 1951-06-12 | Dohm & Nelke Inc | Closure mechanism for pressure vessels |
| US2841308A (en) * | 1954-12-23 | 1958-07-01 | American Machine & Metals | Pressure vessel closure |
| US2923430A (en) * | 1957-09-12 | 1960-02-02 | Filtrox Werk Ag | Apparatus for applying and lifting heavy covers on containers |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3386206A (en) * | 1966-02-01 | 1968-06-04 | Loveless Marion Walter | Closure for large diameter opening of a pressure vessel |
| US4192849A (en) * | 1977-11-28 | 1980-03-11 | Siemens Aktiengesellschaft | Pressure digester |
| US6568552B1 (en) * | 1997-11-28 | 2003-05-27 | Mattson Technology, Inc. | Systems and methods for low contamination, high throughput handling of workpieces for vacuum processing |
| US6105805A (en) * | 1998-08-26 | 2000-08-22 | Labelle; Robert Jacques | Port closure for a tank |
| US6173854B1 (en) * | 1998-09-23 | 2001-01-16 | Robert Jacques Labelle | Post closure for a tank and method of retrofitting a tank with the same |
| US6196590B1 (en) * | 1999-07-09 | 2001-03-06 | Sun Y. Kim | Slide hatch for bulk carrier |
| US6561373B1 (en) * | 2001-07-06 | 2003-05-13 | Roland D. Chapin | Tanker hatch system |
| US20030136343A1 (en) * | 2002-01-18 | 2003-07-24 | Shen Tsung-Lin | Apparatus for sealing a vacuum chamber |
| US6799394B2 (en) * | 2002-01-18 | 2004-10-05 | Shen Tsung-Lin | Apparatus for sealing a vacuum chamber |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3131925A (en) | Digester cap assembly with sliding cap | |
| US4231389A (en) | Removable operator for gate valves | |
| DE2540722C2 (en) | Double lid for closing two openings that can be connected to one another | |
| DE2903951C3 (en) | Device for closing an emptying opening in a container bottom | |
| DE2150317C3 (en) | Combined quick-closing and regulating valve | |
| GB2067272A (en) | Centre link disc valve | |
| DE1247166B (en) | Device for lifting and pivoting a hatch cover | |
| US2299124A (en) | Valve | |
| DE553442C (en) | Non-return valve for large pipelines, which is connected to a piston sliding in a cylinder | |
| DE2004187C3 (en) | Device for actuating the cover arranged on the riser pipe of a coking chamber furnace and the closure flap | |
| DE2146677C3 (en) | Bottom slide lock on a casting vessel | |
| DE1024008B (en) | Trash tipping device | |
| DE1925410A1 (en) | Sliding door with transversely movable door locking leaf | |
| DE1243612B (en) | Hydraulic front cap | |
| DE1775008C3 (en) | Flange quick release for lids of containers, especially for explosion-proof devices | |
| DE2426023A1 (en) | STOP VALVE WITH PISTON | |
| DE1250217B (en) | Device for sealing the detachable closure member of pressure vessels Rohrleitun gene or fittings | |
| DE1009581B (en) | Hydraulic pit ram | |
| US3197193A (en) | Hatch cover operating means | |
| DE1692862C3 (en) | ||
| DE881134C (en) | Rotary valve | |
| DE1065785B (en) | ||
| DE1475770B2 (en) | AUTOCLAVE FOR STERILIZATION WITH RECTANGULAR CROSS SECTION, RECTANGULAR LOCKING OPENING AND RECTANGULAR LOCKING LID | |
| DE968047C (en) | Pipe switch for dust lines, especially in briquette factories | |
| DE459876C (en) | Hand-operated two-plate slide |