US2436737A

US2436737A - Bailer

Info

Publication number: US2436737A
Application number: US682607A
Authority: US
Inventors: Nelson J White; John S Graham
Original assignee: Individual
Current assignee: Individual
Priority date: 1946-07-10
Filing date: 1946-07-10
Publication date: 1948-02-24
Anticipated expiration: 1965-02-24

Description

Feb. 24, 1948.

N. J. WHITE ET AL BAILER Filed July 10, 1946 INVENTORS. lvsLsa/v J. WHI n5, JOHN S. 6

QTTOPNJEYI Patented Feb. 24, .1948

BAILER Nelson-J. 'Wliite T'and Jti fs. drama,

Washington; Pa.

'Application July 1946;-.=-'Serial:='Noi 682,607 '1.

5 Claims. (01. Hill- 19) bailer whichcan be employed .in the removalof loose. materials from ,thewbott'om of a well-and which does not requireqthe.use ofdargequantities of .water: to render drillings or other loosened material-highly fluid, asis necessary with bailers of types heretofore commonly-employed.

Another objectof our invention is to provide-a bailer wherein there arez means for.operatinga flap :or retainingwalve -automatica11y,- both in gathering. a load in'thebailer andin discharging the'materi'al therefrom;

One form which our invention may take is shown: theaccompanying drawing wherein Figure'lfis asecti'onalview taken on the line I---]Z of Fig, 2; Fig. 2 is a rear view of the structure of Fig. 1, and FigL- 3 is a-plan view of the structure The apparatus comprises a tubular chamber 4 which may be of suitable lengthland diameter and which is providedwith' -alegb welded to its front wall. 1A flap valve 6 is pivotally connectedat l to therear wall of the chamber .4- and is movable from ,its open position to its --c 1osed position against the lower end of the-chamber; asdndicated by the dash lines of Fig. 1. A cross bar 8 is welded to the upper end of the chamber 4 and serves not only as a. guide for a longitudinallyslidable bar 9 but as a keeper for a latch Ill.

The bar 9 carries a rod l2 that is pivotally connected to the flap valve 6 so that when the bar is raised and lowered, the flap valve will be closed and. opened. The latch I0 is pivotally mounted at l3 on the bar 9 and is yieldably urged in a counterclockwise direction by a spring N that is adjustably connected at to the bar, whereby the tension of the spring may be varied. A sand line or cable I! is connected to the upper end of the bar 9, to raise and lower the bailer.

When the parts are in the position shown in Fig. 1, the bailer can be lowered into a well. When the leg 5, which extends farther down than the gate valve 6, hits the bottom of the well or the loose material at the bottom, the downward motion of the bailer will be retarded or stopped, with consequent upward thrust on the barrel 4 relative to the bar 9, and also there will be a tendency for the bar 9 and the rod l2 to move down slightly, particularly because of the weight of the bar 9 and the rod l2. This combination of even slight forces in opposite directions upon the tube 4 and the; bar 9, when .the hitsjbdttom, results in easingnor -rernoving the; weight on. the lower. hooked end v ofth e latch-J0. so that it .will swing from. beneath, themar; 8,; outwardlyagainst the inner wall ofrthe chamb er 4, under the tension of the spring l4.- -Thematerialtobelremoved from the bottom of the weli willlenterintothe tube l at thigtime-r Thereupon .verticai pullon; the -;cab1 I] will move the gate 5 to itseclosed position andliit the bailer from the wells At the toppf; the well, the material will-be dumped: from the bailer simply by swingingithe bailerqsidewise to an offsidepcsition ,and lowering ,it until its lleg 'i hits the ground, the cable l;'l .-bei;ng.rthen .slackened to let therod l2 move down farlenoughtto open. the gate 6 for discharge of the bailer contents,

Upon: swinging of the via-ton I llv in .a-clockwise direction to the position shdwn, i -Fig.1 and placing; the cable 11 under some lifting tension, the gate valve 6 wilhbeheldinits open position by the latch. The weight offlthe bailer chamber and its crossibar 8 upon'the latch-hooklwillprovide suflicient'triction to' hold the .latch in'its retaining position, against the pull- 6f the spring 14, whilelowerin 't'hebailerinto the well. 'When the leg 5 again-hits the bottom. time well,- the latch will again be released'fas. above explained.

We 'claini'as'our invention: 1. A bailer "comprising a tube" thatserves as a receptacle for material to be removed from a well, a flap valve pivotally connected to the lower end of the tube at one side thereof and movable into and out of position to close the lower end of the tube, a pull rod connected to a mid point on the valve and extending upwardly, a keeper carried by the tube, near the upper end thereof, a latch pivotally connected to the rod, and arranged to be moved beneath the keeper and prevent upward movement of the rod relative to the tube, a hoisting device on the upper end of the rod, a leg carried by the tube and projecting downwardly therefrom, to a plane below the lowest point reached by the flap valve during its swinging movements, and yieldable means having sufficient force to normally hold the latch away from its keeper, but of insufficient force to move the latch away from the keeper while the latch is supporting the weight of the tube.

2. A bailer comprising a tube that serves as a receptacle for material to be removed from a. well, a ilap valve pivotally connected to the lower end of the tube at one side thereof and movable into and out of position to close the lower end of the tube, a pull rod connected to a point on the valve and extending upwardly, a keeper carried by the tube, near the upper-end thereof, a latch pivotally connected to the rod, and arranged to be moved beneath the keeper and prevent upward movement of the rod relative to the tube, a hoisting device on the upper end of the rod, a leg carried by the tube and projecting downwardly therefrom, to a plane below the lowest point reached by the flap valve during its swinging movement, and yieldable means having suificient force to normally hold the latch away from its keeper, but of insuflicient force to move the latch away from the keeper while the latch is supporting the weight of the tube, the lower end of the tube being beveled and the pivotal connection of the flap valve thereto being adjacent to the uppermost point of the beveled portion.

3. A bailer comprising a tube that serves as a receptacle for material to be removed from a well, a, flap valve pivotally connected to the lower end of the tube atone side thereof and movable into and out of position to close the lower end of the tube, a pull rod connected to a mid point on the valve and extending upwardly, a keeper carried by the tube, near the upper end thereof, a latch pivotally connected to the rod, and arranged to be moved beneath the keeper and prevent upward movement of the rod relative to the tube, a hoisting device on the upper end of the rod, a leg carried by the tube and projecting downwardly therefrom, to' a plane below the lowest point reached by the flap valve during its swinging movement, and yieldeble means having sufficient force to normally'hold the latch away from its keeper when the latch is in a position where it is not supporting the weight of the tube, the leg being secured to that side of the tube which is opposite to the point at which the flap is pivotally connected thereto.

4. A bailer comprising a tube that serves as a receptacle for material to be removed from a well, a flap valve pivotally connected to the lower end of the tube at one side thereof and movable into and out of position to close the lower end of the tube, a pull rod connected to a mid point on the valve and extending upwardly, a keeper carried by the tube, near the upper end thereof,

4 a latch pivotally connected to the rod, and arranged to be moved beneath the keeper and prevent upward movement of the rod relative to the tube, a hoisting device on the upper end of the rod, a leg carried by the tube and projecting downwardly therefrom, to a plane below the lowest point reached by the flap valve during its swinging movement, and yieldable means having suflicient force to normally hold the latch away from its keeper when the latch is in a position where it is not supporting the weight of the tube,

the lower end of the tube being beveled and the pivotal connection of the flap valve thereto being adjacent to the uppermost point of the beveled portion, and the leg being secured to that side of the tube which is opposite to the point at which the flap is pivotally connected thereto.

5. A bailer comprising a tube that serves as a receptacle for material to be removed from a well, a valve connected to the lower end of the tube and movable toopen and close said end, a pull rod connected tothe valve and movable upwardly relative to the tube, to close the valve, a keeper carried by the tube near the upper end thereof, a latch carried by the rod in position to move beneath the keeper to hold the rod in its lower position and to thus hold the valve open, means yieldably urging the latch to its release position, the said means being ineffective to move REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,461,365 Morris July 10, 1923 1,474,707 Crowl Nov. 20, 1923 2,087,590 Brazell July 20, 1937