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Publication numberUS941452 A
Publication typeGrant
Publication dateNov 30, 1909
Filing dateJan 31, 1908
Priority dateJan 31, 1908
Publication numberUS 941452 A, US 941452A, US-A-941452, US941452 A, US941452A
InventorsFrances M Henning
Original AssigneeFrances M Henning
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Capping device for oil-wells.
US 941452 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)



Patentd Nov. 30, 1909.

2 sums-sum 1.


941,452. Patented Nov. 30, 1909.




Specification of Letters Patent.

' Patented Nov. 30, 1909.

Application filed January 31 1908. Serial No. 4l3 ,600.

To all whom it may concern:

Be it known that I, FRANCES MsHEN- NING, a citizen of the United States, resid-- ing at Doxey, in the county of Roger Mills, 1 State of Oklahoma, have invented certain new and useful Improvements in Capping Devices for Oil-Wells; and I=do hereby de-' clare the following to be a full, clear, and exact description of theinvention, such as will enable others skilled in the art to which it appertains to make and use the same.

In the oil fields, whenever a gusher is struckduring the process of drilling, it is customary to cap the well tubing with a screw cap or plug so as to prevent wasting of the oil or the escape of obnoxious gases. It is customary .to employ caps or plugs which are entirely separate from the well tubing but such devices are undesirable i nasmuch as time-must be spent, very fre-' quently in finding them, and it is furthermore quite risky and dangerous for one to attempt a gusher owing to the force with which the oil gushes from the tubing and the deadly character of. the gases accompanying the oil. In order-to expedite the working of oil wells by obviatingthese undesirable conditions, I have provided a novel form of capping device which is permanently connected to a casing surrounding the tubing or rather the oil discharge opening and which may be thrown into position to cap the gusher, by a single workman, he being protected, owing to the peculiar construction of the device, from the oil-and the gases.

In the accompanying drawings, Figure 1 is a view in elevation of the device as associatcd with an oil well, the cap being back, Fig. 2 is a similar view but'shnwin the cap thrown into position ,to -cl'os'e the" well, Fig. 3 is a vertical sectional view through the device, the cap beingin closed position, Fig. 4 is a sideelevation of the device, and, Fig. 5 is a top plairview'.

In the drawings, there is shown a length of.oil well tubing 7 and avcasing 8 which is sunk into the ground, surrounds or incloses the well tubing, and is cylindrical.

This casing is anchored by'means of guide.

rods 9 WlllCh are connected at their upper ends to hook shaped lugs' 10 fonned upon the casing and are anchored in the ground at their lower ends. These guide rods, in addition to holding thecasing against upward withdrawal from the ground, hold it in upright. position. An oil conducting pipe 11 leads laterally from the casing 8 adjacent the upper end thereof and in this pipe there isinterposed a cut-off valve 12.

The casing 8 is formed upon its outer side adjacent its upper end, and at diametrically opposite points with trunnions 13 to which. are pivoted the lower ends of links or arms 14. -At their upper ends, the arms are formed with'slots 15' in which work rectanis formed concentrically with an opening 18 of a diameter equal to that. of the internal diameter of the said casing. The wall of this openin or in other words the inner periphery o the collar is formed with screw threads .19. and thecasing 8 is formed at its upperend also with. screw threads which are indicatedby the numeral 20 and correspond in pitch and direction to the threads 19. It is to be understood that while the collar 17 .is normally dropped to the position shown in Fig. 1 of the drawings, it may be swung upwardly from this position to that illustrated in Fig. 2, the inner periphcry of the collar registering at such time with the bore of the casing 8. A threaded plug 21 is threaded into the collar and in fact is at all times associated therewith'and when the collar has been swung to the position shown in Figs. 2 and 3, the plug is turned by engaging a wrench with a squared head 22 formed upon the upper face of the plug, so as to close the upper open end of the casing 8.

supported or carried by a support which may be swung to bring the plug directly abouethe open upper end of the casing, the

plugbeing adapted to be screwed into the casing to prevent overflow of oil therefrom.

Inorder that the operator of the device maybe protected against squirting of oil and against the outflow of gases directly toward him while capping the casing, the collar is formed .with a dependin semi-circular flan 'e 23 which forms in effect a hood or apron or the purpose stated.

What is claimed, is -1. The combination withrthe outlet tube of an oil well internally threaded at the outer end, of arms swinging from the tube,

an internally threaded collar movably coupled to said swinging supports, and a threaded plug engaging the threaded collar and adapted'to engage the threaded portion of the tube when rotated.

2. The combination with the outlet 'tube of an oil well internally threaded at the outer end, of arms swingin from thetube and provided with oppositely" disposed guide .lugs threaded plug engaging the threaded collar and adapted to engage the threaded portion slots, an internally threadedcollar having engaging in said guide slots, and a of'the tube when rotated. I I

3. The combination with the outlet tube of an oil well, ofa'rms ivoted to the tube, a collar loosely cirriedli plug threaded through the collar and adapted for threaded reception in the end of the tube, the arms being movable to bring the plug into insertible position with respect to the tube. i

4. The combination with the outlet tube of an oil .well, of arms pivoted to the tube, a collar supported between the outer ends of the arms, and a threaded plug threaded y the arms, and a- Witnesses I means for shdablycoupling said collar to said swinging arms.

6. Thecombination with the outlet tube of an oil well internally threaded at the outer end, of arms swingin from the tube and provided with oppositely disposed guide slots, a threaded plug engagin the threaded portion of the tube, a threa ed collar engaging the threaded plug and provided with projectionsislidably engaging in said slots,

and a flange depending from the collar and bearing over the tube.

In testimony whereof, I aifixmy signature, in presence of two witnesses.


E. P. GUNN-,= J. G. PEEL.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2812819 *Dec 3, 1954Nov 12, 1957Phillips Petroleum CoBlow-out preventer
US6085935 *Aug 10, 1998Jul 11, 2000Alliance Laundry Systems LlcPressure vessel door operating apparatus
US7963320 *Sep 12, 2008Jun 21, 2011Corey SchnepfCover assembly for flanges and other tubular members
US20100064589 *Sep 12, 2008Mar 18, 2010Corey SchnepfCover assembly for flanges and other tubular members
Cooperative ClassificationB65D39/084, F01P11/0214