Lading sampling device for a tank

A lading sampling device for taking a lading sample from one of several preselected horizontal levels in a tank comprising:

• a pair of concentric sampling tubes including an inner tube and an outer tube mounted in a bottom opening in the bottom of the tank and extending upwardly inside the tank;
• means mounting said inner tube for rotational movement relative to the outer tube;
• said outer tube having a plurality of vertically spaced outer sample openings therein corresponding to the levels in the tank at which it is desired to take samples;
• said inner tube having a plurality of vertically spaced inner sampling openings at the same horizontal level as the outer sampling openings, but staggered circumferentially with respect to the outer tube sampling openings so that only one pair of inner and outer sampling openings are in axial alignment and registry at any one time;
• sealing means provided between the inner and outer tubes between each sampling level to seal the outer tube relative to the inner tube between the various sampling levels;
• and means to rotate said inner tube relative to the outer tube to align the pair of inner and outer sampling openings at the preselected level.

A lading sampling device for taking a sample from a given level in a tank comprising:

• two concentric sampling tubes mounted in a bottom opening in the bottom of the tank and extending upwardly inside the tank;
• said sampling tubes including an outer fixed tube including vertically spaced outer sampling openings at various levels in the tank, an inner tube rotatable relative to the outer tube and including vertically spaced inner sampling openings at the same level as said outer sampling openings;
• said inner openings at one level being circumferentially spaced from the inner openings at other levels in the tank;
• sealing means provided between said inner and outer tubes between each sampling level to seal the outer tube relative to the inner tube between the various sampling levels;
• said inner tube including an inner tube lower portion extending below the outer tube;
• and means attached to said lower portion to rotate the inner tube relative to the outer tube;
• whereby a sample of the lading may be taken at any given level in the tank by rotation of the inner tube to obtain alignment of the inner sampling openings with the outer sampling openings at the desired level.

A lading sampling device for taking a sample from a given level in a tank comprising:

• a pair of concentric tubes mounted in an openings in the bottom of the tank and extending upwardly inside the tank;
• said tubes including an outer fixed tube including vertically spaced outer sampling openings at various levels in the tank, and an inner tube rotatable relative to the outer tube and including vertically spaced inner sampling openings at the same level as said outer openings;
• said inner sampling openings at one level being circumferentially spaced from the inner sampling openings at other levels in the tank;
• sealing means provided between the inner and outer tubes between each sampling level to seal the outer tube relative to the inner tube between the various sampling levels;
• said inner tube including an inner tube lower portion extending below said outer tube;
• rotating means attached to said lower portion to rotate the inner tube relative to the outer tube;
• indexing means attached to said lower portion to maintain alignment of the openings in the inner and outer tubes while a sample is being taken;
• whereby a sample of the laiding may be taken at any given level in the tank by rotation of the inner tube to obtain alignment of the inner sampling openings with the outer sampling openings at the desired level, and whereby when the inner tube is rotated to a position to take a sample at a given level the indexing means maintains the inner tube fixed relative to the outer tube while a sample at a given level is taken.

A lading sampling device for taking a sample from a given level in a tank comprising:

• two concentric sampling tubes mounted in a bottom opening in the bottom of the tank and extending upwardly inside the tank;
• said tubes including an outer fixed tube including vertically spaced outer sampling openings at various levels in the tank;
• an inner tube rotatable relative to the outer tube and including vertically spaced inner sampling openings at the same level as said outer openings, said inner openings at one level being circumferentially spaced from the inner openings at other levels in the tank;
• sealing means provided between the inner and outer tubes between each sampling level to seal the outer tube relative to the inner tube between the various sampling levels;
• said inner tube including an inner tube lower portion extending below the outer tube;
• means attached to said lower portion to rotate the inner tube relative to the outer tube;
• whereby a sample of the lading may be taken at any given level in the tank by rotation of the inner tube to obtain alignment of the inner openings with the outer openings at the desired level;
• said inner and outer tubes each including short sections which can be inserted into tanks having limited clearance below said bottom opening and then assembled within the tank.

A lading sampling device for taking a sample from a given level in a tank comprising:

• two concentric sampling tubes mounted in a bottom opening in the bottom of the tank and extending upwardly inside the tank;
• said tubes including an outer fixed tube including vertically spaced outer sampling openings at various levels in the tank, and an inner tube rotatable relative to the outer tube and including vertically spaced inner sampling openings at the same level as said outer openings, said inner openings at one level being circumferentially spaced from the inner openings at other levels in the tank;
• said inner tube including an inner tube lower portion extending below the outer tube;
• means attached to said lower portion to rotate the inner tube relative to the outer tube, whereby a sample of the lading may be taken at any given level in the tank by rotation of the inner tube to obtain alignment of the inner sampling openings with the outer sampling openings at the desired level;
• said sampling tubes each including short sections which can be inserted into tanks having limited clearance below said bottom opening and then assembled within the tank;
• said outer tube including short outer sections having abutting flanges;
• said inner tube including short sections which are held in place by said outer sections having abutting flanges, and adapters which rotatably engage said inner tube short section.