US2325429A

US2325429A - Joint breaker and cathead

Info

Publication number: US2325429A
Application number: US402661A
Authority: US
Inventors: John H Schreiber
Original assignee: Individual
Current assignee: Individual
Priority date: 1941-07-16
Filing date: 1941-07-16
Publication date: 1943-07-27
Anticipated expiration: 1960-07-27

Description

July 27, 1943. J, H. SCHREIBER 2,325,429

JOINT BREAKER AND CATHEAD Filed July 16, 1941 Patented uly I 27, 1943 72,325,429.v I' JOINT BREAKER'AND 'CATHEAD John H. Schreiber,"V St. Louis, Mo. Application July 16, 1941, serial No. 402,661k

` 'is claims. V,(01. :asiiwal Y 1 y"This invention relates t0 ,jointbreakers and catheads, and is adapted and designed specially for use in oil elds and `elsewhere inbreaking the joints between pipe sections. 1

Objects of the invention are to provide an,

improved joint breaker and cathead having a ro- `tor mounted for constant rotation when the device is in useandsupporting a relatively mov- .able clutch member or actuator adapted to be moved toiand from an idle or unoperated posi-:- I tion; incombination with another` clutch mem- `ber or shoe ,of novel constructionand attached ,to the usual jerk line of the joint breaker; novel means providing a connection between said shoe {and the jerk line for effectivelyholding the shoe its unoperated position preparatoryforen- Vgegen/lent and movement by said iirst ,clutch v*member to wind the Ajerkline on the rotor; op-

tional means for moving said first vclutch member from its idle or unoperated position to a position in which git'willengage saidshoe or second clutch member during constant rotation of ,the rotor; and means automatically moving and `disengaging said ,rst clutch memberfrom said shoe at therrproper time, thereby permitting the i, jerk line to unwind itself or to be unwound from the rotor and tomove4 said shoe unoperated position.

Other objects of thislinvention areltoV provide an` improved `joint breaker and cathead having a relatively long `jerk linestroke; or extent oi movement by` and duringarelatively low or slow to its initial or 4jerk line speed of movementlto provide a drum rotative continuously in oneV direction when in eiective operation in combination 'with a shoe y attached to the jerk 1ine,`a device carried'by `and thereby said clutch memberv and shoe in proper assembled and cooperative relationship.

`Other objects will appear from the following description, reference beingy made toY ,theanneXed drawing, in which- Fig. l'is an end elevation of my improved `joint breaker and cathead device and showing ,particularly the mechanism controlling the actuator or clutch member mounted on the rotor. Fig 2 is an elevation looking toward the right hand side of Fig. 1.

Fig. 3 is a sectional view of` the device trans Yversely of the axis of the rotor.

Fig. 4 is a sectional View showing particular lyfthe manner inwhich the elements of the dei vice are held in assembled relationship, and `also the'manner Vin which the jerk line is pivotally onnected'with the shoe. Y i

Fig. 5 is a transverse sectional view approximately on the. line 5 5 of Fig. 2.

` Thejpresentinvention is embodied in a joint breaker and cathead generically of the type disclosed in my prior application Serial No. 338,559,

iiled June 3, 1940, now Patent No. 2,275,271,

' dated March 3, 1942.

The stationary frame or housing I is generally of annular form and is adapted to be secured 'i .rigidly tothe Ydraw-works Vby any appropriate and movable relative'to the drum for engaging and moving the shoe in a direction towindthe jerk line onthe drum, andlmeans forreleasing said device from the shoe after an effective movement of the shoe of 360 or more .to wind Y the jerk line on the; drum; to provide a removable and ,interchangeableinsert providing the proper bore,A diameter and utilize this insert to Hhold theseveral parts of the unit together; to: provide an improveddevice in which the starting speed ot the jerk line is reduced to a mini'- mum and much lower thanv thestarting speed of jerk lines in devices now in use; and t0 pro- Avidev aspring device for` initiating the return movement of the jerk lineV to its starting or idle position after said device hasni-been disengaged from the shoe. i

Another object of the invention is to provide a joint breaker and cathead device composed of a minimum of units or elements including a. relatively.V movable actuator or clutch member mounted on the rotor, and a shoe or additional f clutch' member attached to the usual jerk line,

and means for `detachably holding said 4elements attaching means. An opening 2 is provided through one side of the housing, and the jerk line 3 extends lthrough said opening.

The rotor or-drum upon which the jerkline 3 is toY b e wound comprises 'two complementary members each including an annular portion 4,

- an outwardly extended radial portion 5, and an inwardly extended flange E integral with each of said radial portions. The two annularportions 4` of the drum are in abutting contact. The drum is `rotative within the frame I and is mounted vupon and attached to a hub t` `adapted to be secured to the rotary draw-works shaft. Bolts l extend through formations on the hub 6 and throughthe annular port-ions I of the drum and through an annular wall element 8, and are provided on at least one end with removable and replaceable nuts S'whereby the parts engaged by i vsaid bolts 'I are clamped together in rigid relaguide forsaid Shoe. shoeare integrally connected at one end and tionship for rotation by the draw-works shaft.

The end of the jerk line 3 within the housing is rigidly attached to the abutment socket I0 the outer end of which abuts against the inner surface of the frame IV at the openingV 2 in the idleY or unoperated position of the jerk line and socket, The socket I0 also functions as a link and extends between the side portions II of a frame-like shoe orf runner mounted within the `annular space I2 provided by the parts 4, 5 andV 6 of the'rotary drum. Said parts constitutefa The side portions of the held inspaced relationship` by a clutch portion I3 and, at a distance therefrom, are also integrally connected by a cross ,portionV le?. The abutment socket I@ extends between the side portions@ :II- ofvthefshoe and' y'between the connectingporti'ons I3. and lli thereof,V and is..piv otally connected to said side portions by a pin I5. yIn the idle or unoperated position of the jerk line, the socket Ill abuts against the frame I at the jerk line 3, is held away from the frame of the cathead by a spring 29, or otherwise. When the'arm 28 is held away from the frame I by the spring 29 or otherwise, the cam 2'I`is beyond and 5-outofthe'path of movementof "the roller I9.

' .X/Vhentherarms isrnoved inwardly. adjacent to the 'frame I of the cathead, the cam 2'! is thereby rrnoved into position to be engaged by the roller I9 and to `operate the rocker arm I'I to turn the the sides of the opening 2 andwho'ldsr -the"-shoef10=ahtrratdr fl :'Jfto its initial or unoperated position substantially free from pressure againstffor frictional engagement with the rotor by the jerk line. This enables the rotor torotatefreely-without affecting the shoe so that the shoemayfrest v mand to; dieengag'e said actuator I9 from the part Y I3 of the shoe and thereby leave the shoe free f-toz-'bem'ovedifrom its operated position (Fig. 5) 13o..its,unoperated position (Fig. 3) by the un- .or be supported in its idle er unoperated posi- 1`5 winding of the jerk line 3 from the drum. The

i tion` vwithout *objectionable* inte'rference'1 b-yfthe rotor. Y

f- An actuator orclutchfmemberl E-is carried by 'and'rnovablerrelatiye to ithe' rotor from iadto an unoperated position. In its -unoperatedJ-posi-EQZ Y*member "I 6 is "inrcontinuousjarcuate; alinem'eht `@with the -`periphery"of-"-tl'1atr portion lof lt-he'rotor unoperated position to eiectivepositiongthe `adfvance-edge' thereof''pro-jectsi"into the `space I2 and beyond the'pe'ripherybfLthe'parts #of the rotorfar: enough=tofengage 'the'clut'chs portion I 3 'l 'thespace I 2 fronttheunoperated` positionshown in Fig: 3 tothe ultimate operated positio11`sl-1own in Fig. 5, and therebyrwindlthejerk -li-ne"on""tl:1e Y rotaiydrum, yasishown.

40 .funoper'ateclrpo'sitionisl indNl-iiclithe 'cams 24u and "21 to hold said actuatorfyieldinglyririthe twoA positions "towhielifitrnaybeturned. This is to say "'l'that'whenthe detentilris'engaged/in one of the '-recesses' 2 l jthe actuator "l l -will 1"be held 'in its *sofi-,he actuatoril 63 When the nuts Sareiremoved, f-thef-hub zxmaybe movedf outwardly and 'detached ironrthe. assembly; leaying'the 'partythat are '^engagedby theifbolts 'Ifreeffor detaehmenttfrom ffiever 122 may be heid in mention-t5 suppe-maneesfrfhother- 'Tn'istutherebyzoperatedItoiturn thefactuator `I9V fai'rom its .'-uifidperatedY positiorii-C'Fig; 3)' to itsf'ffecthief-:orf operated positi (Figi 5) 'in which latter :x-po'sition saidf'aetuator .fill engage the-part T13-fof E Whichthe .camzfw-"ilb notlbevengaged bythe 60 during .Otoh. of. ,thefdmm @the maker.. arm 65* 'the actuator-"161mm its unoperated-position"'(1ig.

"3) to its operated positioni-llig'f- 5) Irritspperated' Lposition-*the lactuator "I6"wi1l. engage" the Ypart I3 of the shoe and move .the'ishoe along u with'f'therotor yand thereby windthe jerk line on -1 Movement' o'the jerk line.; 3 in'this manner engages `-t-herlolock '-30 against 'the arm; 28..and f moves said armwin a direction and to a positioneto @place kthepam 1lirr' position .to be engagedby to a position to engage the shoe Y AA2,325,429

caml 21, the actuator I6 is thereby turned about vits axis and promptly disengaged from the part I3 of the shoe, leaving the jerk line 3 free'to be `moved in adirection unwinding the same from 1 the drum'and moving the shoe to its initialv or 'unoperated-'positiom as shown in Fig. 3. In the unoperated position of the shoe,4 the abutment socket -Ill engages against the stationary frameA l and thereby supports the shoe substantially out of frictional engagement with the rotor. The

1, cams 24 and 21 are automatically moved out'oiv the paths of movement of therollers I8` and `Iii,

` respectively, by the spring 25 or'other'wise, be-

fore or during unwinding ofthe jerk line from athe drum. This leaves the parts in position forV another operation when the cam 24 Vis moved by operation of the lever 22 to turn the actuator I6 `In my improved joint breaker and cathead, the

lshoe that is attached to the jerk line3 is moved at least and may be moved more than'360 about lthe axis of the drum before-the actuator or clutch member I6 is disengaged froml the shoe by vthe cam 2l. This provides a relatively long jerk line stroke or` movement which can be efected'byv a relatively slow jerk line Speed ofrnovement. As shown in Fig. 1, the block 3D is secured'to the jerk line 3 in an adjustment to permit the minimum extent of movement of the jerk line by the rotary drum and its associated parts.' This minimum movement is in excess of 369. by the disn tance `from the .line 32 to the line 33 at the periphery of the drum. This movement of the shoe more than 360 around the axis of the drum' isfdan important and. distinguishing feature of the present invention.

'rotary drum having a circumferential space, and

a jerk line adapted to be` wound on'said drum within said space; aY shoe mounted in said space,

an element attached to said jerk line and` pivoted to said shoe for swinging movements from and to a position in-which said element extends Voutwardly beyond the periphery of said drum,`

means cooperating with said element preventing substantial pressure of said shoe against said drum by said Yjerk line in said last named position of `said element, an actuator supported by said drum for movement relative thereto into a position for engaging and positively moving'said shoe and thereby said element to wind said jerk line on said drum, and devices for moving said actuator to and from said position. 'j j 2. Mechanism of the character described comprising a rotary drum, a jerk line adapted to be wound on said drum, a shoe Inounted'adjacent to the peripheryY of said drum, an element attached to said jerk line and pivotally connected with said shoe7 a device carried by and movable relative to said drum for engaging and moving said shoe along with the drum in adirectionY to wind said jerk line on said drum, a membersupported adjacent to said drum for movement to a position to move said device relative to said drum to eiect a driving engagement between said device and said shoe, and means operated by said fordsengaging said device'from said shoe.v f

3. Mechanism of the character described comj prising a rotary drum, a jerk line adapted to be Wound on said drum, a shoe mounted `adjacent vto the'periphe'ry of said drum, an element pivotally connecting said jerk Yline with said shoe, an actuatonsupported by fsaiddrum for movement-relative thereto into a position for engaging -and positively moving said sho'e along with the drum to wind saidjerk line onA said' drum during rotationofthelatter, a manually'operative device for moving 'said actuator into said position for 'engaging' said shoe, and means operatedblr said jerk line fordisengaging said actuator from said shoe. i

`4. Mechanism of the character described comprising a lrotary drum, ajerk line vadapted to be wound on said drum, a shoe located adjacent to the periphery of said drum, a` device pivotally connectingV` said jerk line `with said shoe and 1 holding said shoe free from pressure by said 'jerk line against said drum in the uncperated position of said-shoe,` an actuator vmounted insaid drum and Ymovable relativeY thereto to engage and v disengage said shoe, a manuali device adjustable in a position to move said actuator to a position to engage and move said shoe along with the drum during rotation of said drum, and a device 301 attached to said jerk line and operated thereby f for disengaging said actuator from said shoe.

5. Mechanism of the character described comprising a rotary drum having a circumferential space, a jerk line adapted to be wound on said drum within said space, a shoe mounted within said space in said drum, an element pivotally connecting `said jerk line withv said shoe andV holding saidshoe substantially free from pressure by said-jerk line against said drum in the unoperated position of saidshoe, an actuator supported by said drum for movement relative theretointo a position forl engaging and positively moving said shoe to wind said jerk line on Y said drum, a manual operative device for movingvsad actuator' to said position, and means 4operated by lsaid jerk line for disengagingsaid actuator-from said shoe. i

6.111' a device of-the character described, a

drum omprisingalhub adapted to be secured to a rotary shaft, a wall element, two comple- `mentary peripheral portions mounted on said hub and forming a circumferential space, detachable means engaging saidY hub and said Wall and alsof-'engaging said two peripheral portions and holdingall of said partsV in rigid relationship,` a Yshoe lmounted in said space, a jerk line pivotally connected and an actuator movable relative with said shoe,

mounted in said drum and Vthereto to engage and` move saidshoe along with tary peripheralportions mounted on saidhub and forming a circumferential space, detachable means Vengaging said hub and said wall and also engaging said two peripheral portions and holding all of said parts in rigid relationship, a shoe mounted in said spacaa jerk line pivotaliy connected with saidshoe, an actuator mounted in said drum and movable relative thereto 'to engage and move said shoe along with said drum and thereby wind said jerk line on said drum within said space, and means operated by said A j erk` line "during Y movement thereof by said-shoe