US1848404A - Reamer - Google Patents

Description

w. A. ABEG@ 1,848,404

BEAMER Filed sept. 1s, 1929 2 sheets-sheet 1 March 8, 1932.

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v Mardi 8, 1932- W. A. ABEGG 1,848,404.

`Fi eeeeeeeeeeeeeeeeeeeeeeeeeeee t 2 y y' f Patented Mar. .8,1 1932 uN-ifrenf stares y 1,843,4c4f

'earner eserce- WALTER YA, Annee; or yrios ANGELES, cemrenma, y'assrenoia or cnn-HALF rro B.

c nnrnnonn, or Los Amenities, cerimoniale c nennen l Application led September 18, 1929.4 Serial No. 393,439.

larly effective and practical as appliedto a reamer., c Y Y vAnother object of this inventionis to pro-y vide va simple, practical and secure construcc.orthelike.."'c" kA nfurther object of the present' invention is to provide a simple, convenienti and practical reamer construction whereby the cutter unit canrbe mounted various kdistances from ,n the yaxis of the tool so that itwill operate to tion for mountin'ga cutter unit in a reamer,v

725 ream a well bore to different sizes, as desired.

The various objects and features of myinventionL willbe best and moreA fully understood from the following detailed description of atypical form and application'of the inv A vent-ion, throughout which description reference is hady to the accompanying drawings, in

which: Y Y Y `y Fig. v1 is a longitudinal detailed sectional view ofthe body of thereamerconstruction provided by the invention showing the cutter unit and cutter mounting removed. Fig. 2

is a longitudinal detailed sectional view of the reamer showing the cutter unit being assembledwith the body. Figl is a view simi- 40 lar to Fig. 2 showing the cutter unit in operating position in the body. Figs. 4,5 and 6 are detailed transverse sectional views of thek construction taken on lines L /l, 5-5 and 6 6, respectively, on Fig. 3.r Fig. 'isan end view of one of the pin supporting collars', and

Figs. 8 to 11 inclusive are' more or less diagrammatic viewsillustrating various settings of the collar.

` The construction provided by this inven- 50 tion being particularly applicable to a well tapered screw-threaded piniprojection while ranged in various manners, for instance, they reamer, such, for example, asis usually operated above or in connection with a drilling rbit, l will confine 4the present disclosure to a reamer of this type, it being understood that the broader principles of the invention are not to be considered limited to the details disclosed.Y c A L The construction provided by the invention includes, generally, a body 10, a cutter assem-` bly or unit l1, and means l2 for detachably connecting the body; 10 and cutter unit llso that the cutting parts of the unit'proj ect'from the bo dylO ina mannerto engage the torina-i` tion throughwhich the tool is operated.

Iln the case of awell reainer such asis illustratedinthe drawings,the body 10 is an elonigate member, preferably a unitary member, provided at its upper and lower ends with screw-threaded parts 13 andll respectively, adapted to facilitate connection with4 adj oin-y ing parts such as the'parts of a well drilling string. at one end of the body is rin the form ofa the part 14 at the other end of the body is in 75 the nature of a tapered screw-threaded socket adapted to receive a pin projection. l/Vhere the reainer is to be operated with the usual Y rotary method of drilling a central longitudinal circulation opening y16. may. extend through the body from one endv to the other as clearly shown in Figs. 1, 2 and 3 of the drawings.` ln accordance with 'the' present invention the side wall of the body is provided with one or more recesses 15 to receive cutter units. ln the usualv reamer I provide a plurality of cutter-Carrying recesses 15, it being obvious that the recesses may bearmay be spaced or located in various positions longitudinally or' the body and maybe locate-drin various positions around the body. in the particular case illustrated there are three recesses 15 in the same location longitudinally, of the body and Vspaced apart around the body so that the body is symmetf rical in cross section as isf clearly shown'V in Fig. 5 of the drawings. Y v

A cutter unit 11 embodying the present invention includes, generally,a pinv 17, one or In the case illustrated the ypart 13 c more cutters 18 rotatably carried by the pin, and heads 19 fixed on the ends of the pin to hold the cutters against displacement. In the particular case shown there is a plurality of cutters 18 on the pin 17, the end cutters, that is, the cutters adjacent the heads 19, being bevelled as clearly shown in Figs. 2 and 3 of the drawings. The cutters 13 may be toothed roller cutters of the type ordinarily employed in hard rock drills. The heads 19 may be fixed on the ends of the pin in any suitable manner, for instance, they may be secured in place by transverse pins or keys 20. The keys 2O may be iitted so that they can be driven into and out 'of place when it is desired to remove the cutters from the pin 17. The heads 19 fit the recess so that they are held against rotation. The heads may be polygonal in cross sectional configuration, for instance, square, and they may be seated in correspondingly shaped parts ot the recess. It is to be understood, of course, that the pin 17 and the cutters supported by the pin are proportioned so that the cutter unit is of such length and diameter as to be properly accommodated by the body recess 15.

The means 12, provided by the present invention for detachably connecting the cutter unit'with the body so that it is positioned in the body recess 1,5 and projects from the body in the desired manner, includes, generally,

lugs or projections 22 extending from the outer ends of the heads 19 of the cutter unit, a socket 23 in one end of the bodyrecess 15, anda retaining block 24 detachably connectedto the body at the other end of the recess and provided with a socket 25 to receive the pvnpjection at the other end of the cutter unit.

e projections 22 are made sufficiently long and heavy to effectively hold the cutter unit in the body. In the arrangement shown the socket 23 is at the lower end of the recess 15, and to facilitate manufacture the socket is formed in a block of material 26 which is formed with the socket and then welded or otherwise permanently united with the body to become solid or substantially integral therewith.

The retaining block 24 is located at the upper end of the recess 15 and is preferably in the nature of an elongate block adapted to seat in an extension 15a of the recess 15` as clearly shown throughout the drawings. The socket 25 isin the lower end of the block 24. In practice various means may be provided for detachably connecting the block 24 with the body 10. In the form of the invention illustratcd the block is held in position by screw means, for instance, a cap screw 30 is arranged through an opening 31 in the block and screw threads into an opening 32 in the bottom of the recess extension 15a. In the construction just described the cut-ter unit or assembly is first positioned so that the projection 22 at its lower end enters the socket 23 at the lower end of the recess 15. While the upper end portion of the cutter unit is tilted outwardly or away from the body, the retaining block 24 is applied to the cutter unit so that the projection 22 on the upper end of the cutter unit projects into the socket 25. The cutter unit with the retaining block 24 can then be swung into operating position so that the retaining block 24 seats in the recess extension 15a. With theblock thus positioned, the cap screw 30 is arranged in place to secure the block against displacement from the recess 15a. It will be obvious that the cap screw may be provided with suitable lock washers or locking means so that it will not work loose and that the head ofthe screw may be countersunk in the block so that it does not project in amanner to interfere with the action of the tool.

In the preferred form of the invention the cutter unit is supported intermediate its ends, for instance, ribs are provided across the recess 15 at points intermediate the ends of the recess andy openings or notches 41 are provided inthe ribs to receive collars 42 on the pin of the cutter unit. The .collars 42 are arranged on the pin between the cutters and operate as spacers to divide the cutters into spaced groups, as shown throughout the drawings. The exteriors of the collars preferably correspond in shape to the heads 19, for instance, they may be square. The collars are adapted to fity into correspondingly shaped notches 41 inthe ribs 40 and are thus held against rotation. The configuration of the collars and the mannerin which they fit the notches in the ribs 40 is clearly `illustrated throughout the drawings. l y

In accordance withL the present invention, they construction above described hask the parts related so that the cutter unit can be mounted in various positions with reference to the body, for instance, at various distances from the central axis of the body. In the form of the invention illustrated the in receiving openings in the heads are o set or eccentric to the exteriors of the heads while the projections 22 are concentric with the exteriors of the heads. With this construction, by setting the heads in different rotative po sitions in the body recess, the pin 17 is supported in different positions or diierent distances from the central axis of the body. When this feature is embodied in the construction, the collars 42 are constructed so that the pin carrying openings are eccentric to the exteriors of the collars. When t-he heads and collars are square the pin receiving holes are preferably located so that the pins can be set four different distances from the center of the body.

In Figs. 7 to 11, inclusive, of the drawings, I illustrate the features of this invention just described. The relationing of parts of the heads being the same as in the collars I will make detailed reference to the collars only.

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The pin receiving holeis positioned with reference to the exterior of this collar so that its axis is offset or removed different distances from lines drawn at right angles to the exterior surfaces of the collar to intersect at the center of this collar. In the drawings, lines a-m and y-z/ are drawn at right Vangles to the exterior surfaces of this collar and intersect at the center of the collar. The point .e designates the center ofthe pin receiving hole. Lines l-ml and g/- Q/l are drawn parallel with the lines :rand jz/-g/ respectively-and intersect at the point e. 'Ihe 'differencein spacing of lines and ml-Jr and lines y-g/ and y1-fz/1 illustrates the relationingof the point e with relation to the center of the collar.

From the foregoing description it will be apparent that I have provided a reamer construction which is extremely simple and inexpensive of manufacture, convenient to handle andV operate, and efficient and dependable. The cutter unitscan be applied to `or detached from the body easily and quickly and the various parts of the construction are simple and inexpensive ofmanufacture making the tool practical and suitable for general use. It will be obvious that the cutter units,

mounted as provided by this invention, are

' over ordinary reamer constructions. The

cutter carrying pin being supported at points intermediate its ends may be comparatively small .in diameter and is effectively held against bending.

' f Y Having described only a typical, preferred form of my invention,I do not wish to limit myself to the specific details set forth, but

n wish to reserve to myselfvany changes or a pin, a cutter carried by the pin, heads at the f ends of the pin, Vand lugs projecting from the heads, one iof the Vlugs extending 'into the socket, yand a member detachably connected with the body and having an opening holding the other lug. Y l y 3. In a tool of the characterV described, a body having notches with fiat walls, a cutter unit including a'cutter carrying pin, square heads on the krpin tting the notches, andY f holding one ofthe lugsand adapted tobeconnected with the body.- a i 5. In a tool ofthe character describe-d, a body having rectangular'notches, a cutter unit including a cutter'carrying pin, heads on the pin square in cross section and adapted to fit said notches, means connecting the unit with the bodyy with the headsy rigidly held in the notches, and means supporting the unit intermediate its ends including blocks on the pin square in .crossl section and fitting rectangular notches in the body, the pin being eccentric to the headsv and blocks.

6. In a tool of the character described, a body having notches, a cutter unit including a cutter carrying pin, heads on the pin, means detachably connecting the unit with the body with the heads stationarily-held in the notches, andy-means supporting the unit intermediate its ends including yblocks on the pin removably tting notches in ribs on the body.

7 A well tool of thecharacter described including, a body having notches with flattened n cutter unit may be rigidly mounted at different distances from the center ofthe body,in cluding heads having flattened sides to fit in said notches and having openings yreceiving the ends of the pin eccentric to their exteriors.

8. A Well tool of the character described including, abody having notches, a cutter unit including apin and a cutter carried by the pin, and means whereby the cuttery unit may be mounted at different distances from the center of the body, including heads fitting the notches sothatthey are held against movement, and having openings eccentric to their exteriors receiving `the ends of the pin.

9. A Well reamer including, an elongated body, a cutter unit including a pin, and a cutter rotatable on the pin, means for mounting one end of the pin on the body, and means for mounting the other end of the pin on the body for adjustment radially of the body or circumferentially of the body.

10. A well reamerincluding, an elongated "Y body, a cutter unit including a pin, anda l rectangular n'otch in the body, and means for detachably holding the block in the notch, the longitudinal axis of the pin being eccentric to the block. k5 `11. In a tool of the character described, a.

body .having notches of rectangular transversecross Section, a cutter unit including :l cutter carrying pin, heads on the pin, the heads being of square cross section and being 13 adapted to fit the notches, and means detachably connecting the unit with the body with the heads rigidly held in the notches7 the longitudinal axis of the pin being eccentric to the heads and located unequal distances from ad- !5 joining sides of the notches.

In Witness that I claim the foregoing I have hereunto subscribed my name this 24th day of July, 1929.

WALTER A. ABEGG.

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