US1336250A - Sampling device - Google Patents

Description

H. E. McCOY AND F. J. TARR.

SAMPLING DEVICE. APPLICATION FILED JULY 22,1918.

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HENRY E. MCCOY AND FRANK J. TARR, OF SAPULPA, OKLAHOMA.

SAMPLING- DEVICE.

Application filed July 22, 1918.

To all whom it may concern:

Be it known that we, HENRY E. MCCOY and FRANK J. TARR, citizens of the United States, residing at Sapulpa, in the county of Greek and State of Oklahoma, have invented new and useful Improvements in Sampling Devices, of which the following is a specification.

This invention relates to sampling devices and is in the nature of what is known in oil refining plants as an oil thief. The object of the invention is to provide a portable gage adapted to be lowered into a tank or reservoir of any kind containing oil, for the purpose of removing a sample of such oil from the bottom of the tank in order to determine whether there is water in the bot tom of the tank and the quantity of water contained therein.

A further object of the invention is to provide in connection with such a device means for trapping a sample of the contents in the bottom portion of such tank, so that such sample may be withdrawnand inspected. i

A further object in view is to provide means for automatically tripping a movable sample container and sealing the entrance to said container by permitting the lower end of the device to come in contact with the bottom of the oil reservoir or tank. The device also comprises means whereby said container may be tripped and sealed at any elevation above the bottom of the tank.

Vith the above and other objects in view, the invention consists in the construction, combination and arrangement of parts, as herein described, illustrated and claimed.

In the accompanying drawings:

Figure 1 is an elevation of'the device.

Fig. 2 is an elevation taken at a right angle to Fig. 1, with parts in section.

Fig. 3 is a section onthe line 33 of Fig. 1.

Fig. Fig. 1.

Fig. 5 is a fragmentary section through the bottom of the device.

The sampling device, contemplated in this invention, comprises in the preferred embodiment thereof, a tubular body 1, extending downwardly from which is a tubular barrel 2 having vertical elongated entrance openings or slots 3 in the opposite sides thereof. The bottom of the barrel 2 is closed by means of a base cap 4: removably thread- 4 is a section onthe line 4-4 of Specification of Letters Patent.

Patented Apr. 6, 1920.

Serial No. 246,071.

ed thereon and containing a packing disk or gasket 5 which serves as a seal for the bottom end of the container hereinafter described, when said container is moved down wardly.

Mounted for limited vertical movement within the barrel 2 is a tubular container 6 preferably of glass, such as a sight glass tube. Before the device is lowered into an oil tank or reservoir, the bottom edge 7 of the container 6 is elevated sufliciently above the packing disk 5 and the lower ends of the openings 3 to allow liquid to enter said container 6 at the bottom thereof. The upper end of the container 6 is held between a plurality of spring clips or fingers S on a plunger head 9 of skeleton construction to enable liquid to pass therethrough. Extending upwardly from the head 9 is a plunger rod 10 which projects above the top of the body 1, the plunger 10 being surrounded by a spring 11, the energy of which is used to press the container 6 downwardly against the sealing disk 5 to prevent escape of the liquid trapped in said container.

Extending upwardly from the tubular body 1 is an arm 12 having an eye 13 at the upper end thereof to enable a cord or rope to be attached thereto for raising and lowering purposes. The arm 12 is provided with a laterally extending pole receiving socket 14 provided with a binding screw 15 to enable a raising and lowering pole to be attached to the device.

16 designates a bell crank shaped trigger which is connected to the arm 12 by means of a pivot 17. To the upstanding arm of the trigger 16 there is attached a connecting rod 18, the latter being attached at its lower end to the plunger 10. Attached to the other arm of the trigger 16 is a trip rod 19, working through guides 19 the latter extending downwardly to a point slightly below the bottom of the base cap a, so that when the lower extremity of said trip rod comes in contact with said tank or reservoir, the trigger 16 is swung on its pivotal connection with the arm 12, carrying the connecting rod 18 off to one side of the pivot 17 and thereby allowing the spring 11 to depress the plunger head 9 and the container 6 for sealing the bottom end of the latter. The horizontal arm of the trigger 16 is provided with an eye 20 to which a trip cord may be attached to enable the device to be tripped at any desired elevation above the bottom of the tank. The arm 12 having the pole receiving socket 141 may be made separately from the tubular body 1 and fastened thereto by screws 21 or the equivalent thereof.

From the foregoing description, taken in connection with the accompanying drawings, it will now be understood that in order to obtain a sample of liquid from the bottom of the tank or reservoir, the container is first raised so that liquid :may. enter the lower end thereof. Said container is held in such raised position by properly adjusting the trigger 16 as shown in Fig. 1. The device is then lowered toward the bottom of the tank, and during the lowering operation, the container 6 is filled with the liquid in the tank. As soon as the container is filled, the operator allows the whole device to descend alittle farther until the lower extremity of the trip rod 19 strikes against the bottom of the tank. Thereupon, the trip rod 19 is moved upwardly, turning the trigger l6 and tripping the plunger head 9 which moves downwardly, carrying with it the container 6 until the bottomedge of the latter rests on the sealing disk 5 and closes the same against the escapeof the trapped .liquid, the device is then raised to the surface and the contents of the container examined. The device is particularly used for ascertaining the presence of water in the bottom of an oil tank and determining the quantity of water therein.

lVe claim 1. In a sampling device of the class described, a tubular body, a barrel extending downwardly therefrom and having a side opening thereim'a base cap closing the lower end of said barrel, atubular container movable longitudinally within said barrel and open at both ends, a stationary seal in said cap for the lower end of said container,

I means'for raising said container within said able-longitudinally within said barrel and open at both ends, a stationary seal in said cap for the lower end ofsaid container, means forraising said container within said barrel, and means for automatically actuating said raising means to permit said container to move downwardly against said sealing means. 7

In asampling device of the class described, a tubular body, a barrel extending downwardly therefrom and having in said cap a-side opening therein,--a base cap closing the lower end of'said barrel, a tubular container movable longitudinally within said barrel and open at both ends, 'a stationary seal in said cap for the lower end of said container, means for raising said container within said barrel, means for automatically actuating said raising means to permit said containerto move downwardly against said sealing means, said automatic tripping means comprising'a trip rod extending below the bottom of the device, a trigger operated by said rod, and-a spring thrust connection between-said barrel head and container."

In testimony whereof we ailix our signatures.

HENRY E. 'MoCOY. FRANK J. TARR.

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