Nov. 5, 1946. A. l. APPLETON [er1-Al.y SPINNING TOOL Filed oct. 8', 1945 I7 zo /9 @7'. 4. z M y K 2,410,476 . Patented Nov. 5, i946 ' _ `~ UNITEDÈ STATES’ 2,410,476 ÉNT --’OFIf‘ICIëI ’ r¿v'f2,4iy0,4¿'iegl.' _. ' SPINNINGV TOOL ’l v _ v_ Anhui I. Appleton, Northbrook, and can H. stahl, _. _ Villa Park, Ill., ,assignors to Appleton Electric Company, Chicago,'lll., acorporationof Illinois Application October 8, 1943, S'erialNo; 505,484 I '_ je claims. (clïl’zisëwi The present invention pertains to a novel tool '_ior spinning or flaring an end portion of such a devicejas a fitting» or the like in attaching _the modiñcations Aand alternative constructions, :we have v'shown .in the drawing and will herein de scribe in detail=tlie preferred embodiment, but it is to lbe understood that we do not thereby in tend to limit the invention to the 'speciñc form' disclosed, butlintend to cover `all modiñcations and alternative constructions falling within the spirit-and scope of the invention vas'expressed i same to a box or wall. - The general aimy ofthe present invention is _ to provide a novel tool of the type indicatedwhich ^ is characterized especially by its simplicity and ruggedness of constructionf as Well as by its _adaptability to use in locations diíiicult of access. the appended claims. ` , . i More particularly, it is an object .to provide 10 ¿Referring more particularly to the drawing, sucha tool in which a spinner'head is adapted an exemplary embodiment of the tool has been -to -be revolved and coincidentally drawn into -the throatof a fitting or the like to spin or flare the shownin Fig. 1.~ In Figs. 2.and 3 this tool is'illus trated as used for spinning or flaring the reduced end portion of a fitting IU in attaching the latter to a `wall II. The particular fitting or nipple latter progressively outward to a desired contour. . .Another object i's to provide such a toolin which the spinner head is removably screwed on its drive spindle so that the head may be removed for insertion _of the spindle into the work, ybut in which the arrangement is such that the head willactually tend to be tightened on the spindle rather than loosened as an incident/to operation ofthe tool. _ ’ l f ` _ _ _ _Still another and vimportant object is to 'pro vide ,such a tool in which provision is made for not only threading the' tool into an internally threaded ñtting or the likewhich is to be oper ated upon so as to hold _the tool in place during operation, but in which provision is also .made for quickly and easily freeing the tool from the iitting no matter how great the tendency of the rotation of the tool incident tooperaion may be to jam it tightly into the threaded fitting. As will hereinafter appear in greater detail, this object shown is one such as iscommonly used in at taching electrical conduits to outlet boxes in var ious wiring installations. It is >internally thread# edr at I2 in order to receive a threaded conduit (not shown) which will later be attached, and has a reduced end portion I3 which is inserted through-a hole I4 in the box wall I I. This re ducedfend-portion I3. i's Iiared or spun by the _herein disclosed tool to the contour indicated in Fig. 3 -to secure the ñtting Iß to the Wall II. In " 25 so attachingfthe ñtting, the tool not only iiares out the lip or edgeof the portion I3 to a gener ally frusto-conical shape, but also expands the throat of the fitting at the point where it passes -30 through the wall II and squeezes the shoulder I5 of the fitting against the outer face of the wall. In this way the ñtting is rigidly attached to the wall I I with a permanent water-tight joint. is accomplished through the use of a novel sup _ The more or less detailed reference to the porting arrangement embodied in the tool and fitting IB made herein is simply for the purpose 35 of clarifying the action of the tool and the pur which is longitudinally contra’ctilole` to free any jamming of the support within the fitting which poses of Various features embodied in the tool. may be occasioned by operation of the tool. No‘inference is‘to be drawn, accordingly, that Further objects and advantages of the inven the. tool is in any way limited to use with this tion will become apparent as the following vde particular form of ñtting. On the contrary, it 40 scription proceeds, taken in connection with the is equally Well suited for use in effecting the accompanying drawing in which: spinning' attachment of a great variety of other Figure 1 is a perspective view of a spinning articles. In fact, one of the prime virtues of thetool shown is the facility with which it may tool embodying the invention. ’ i be adapted for insertion into articles of different Figs. 2 and 3 are side elevations, partially in internal diameters and shapes. longitudinal section, of the tool of Fig.` l and @Turning now to the tool itself (Fig. 1), in the illustrating successive positions thereof in the exemplary construction illustrated it comprises course of its operation. . , . l arspindlelö .having a squared outer end I‘I. to Fig. 4 is a fragmentary longitudinal 'sectional _ viewî illustrating the contraction of the .support 50 whichfmay be applied any suitable handle for ing structure of the tool in freeing it from the turning thesamafsuch, for example, as a con work.> ventional ratchet handle indicated in phantom at -' f ' Fig. 5 is a fragmentary detail View showing the |825. -On vthe opposite or forward end of the spindle I6 is removably iixed a spinner head I9, central portion of the tool in longitudinal section. _ -Whilethe invention ¿is susceptible `of various 55 while-the intermediate‘portion of thespindle is 2,410,476 3 y4 threaded at 20 for reception of the same within a supporting structure designated generally as 2| and which is itself adapted to be screwed into the ñtting I0. In brief, the arrangement is such that when the supporting structure 2I is in position within the ñtting Ilû, rotation of the ture is used in freeing it from the ñttìng, as will appear. The inner sleeve 28 is substantially long er than the outer sleeve 29 and projects beyond the latter at both ends. Integral hexagonal heads 28a and 29a, suitable for wrench engagement, are provided on respective sleeves at their outer ends. , The projecting _nose portion of the other spindle I6 will cause it not only to turn `the spin ner head I9 but. also to >draw .the same »into the reduced forward end of the fitting (from the‘posi-v tion of Fig. 2 to that of Fig. 3), thus distorting the ñtting in the proper manner for its rigid attachment to the wall I I. The threads 20 elïect the axial feed of the spindle in coordination with its turning. v . en_d oi the inner sleeve 28 is beveled as indicated at 3I for engagement with the shoulder I5 in 10. the fitting. Normally a protective washer 32 >`is located within the ñtting on the inner face îof this shoulder and against which the nose 3| of the sleeve bears. Relative rotation of the _ The spinner head I9 is illustrated as being of T-shape, and disposed with the arms ofthe T projecting laterally, the stem ofthe T extendingV sleeve elements 28, 29, and thus their relative -axial movement, is limited by a spring-urged stop pin 33 carried by the head 28a and having its inner nose portion received in a slot 34 cut in the coaxially with the spindle I6 and toward `the cen outer vface _of the other head 23a (Figs, 1 and 5). tral portion of the latter. Hardened active sure’ "In some instances engagement of the sleeve faces 22 are provided on the undersides of the 20 heads 28a, 29a by wrenches or a vise may be T arms and are tapered or sloped Vinward toward` -inexpedient because of the location of the fitting the spindle axis. The surfaces22 conform 'sub which is being operated upon. To'take care of stantially to the contour whichit isldesired to im such contingency, hand levers or rods35, 36 (Fig. part Iby spinning to the reduced end portion I3 1) are removably threaded in suitable tapped of the 'fitting (see Fig. 3). Moreover, the spin 25 holes provided in the respective sleeve heads 28a, ner head is of suñ‘iciently great width adjacent 29a. the inner ends of the active surfaces 22 that the In using the tool to ñx the illustrated iitting throat portion of the reduced end I3 on the fitting III to the wall I I, the spinner head I9 is removed will be expanded into tight engagement with the from the spindle and the nose of the tool in edges of the hole I4 as the spinning head is .30 serted into the loose fitting. The Workman holds pulled axially into this throat. the fitting I0 in one hand and grasps the shank Although removability of the spinner head I8 of the spindle I6 in the'other, turning the spin is requisite for initial insertion .of the tool if the dle to the right (i. e., in a direction opposite to » head is >to be shaped'to be' drawn axially into the end Aof the work as shown, any such removable mounting of the head poses a problem becauseA of the heavy frictional drag imposed by the work in the course of operation. In the presentin stance the spinner head I9 is screwed on the re the arrow A) to screw the externally threaded sleeve 29 into the fitting. In so manipulating the device, the spindle I6 is threaded into the inner sleeve 28 as far as it will go and then' the latter turns with respect to the outer sleeve until the pin 33 abuts against the end face 34a ofthe duced forward end of the spindle IS, threads »23 40 notch 34. Thereafter the outer sleeve 29 turns being provided on the llatter for that purpose'. with the inner sleeve 28 and spindle I6, thread To prevent the spinner head from being' in ing the outer sleeve into the fitting. Threads 30 advertently unscrewed from the spindle during connecting the sleeve have a lead in the same operation, the threads 23 are' cutiwith' a >lead direction as threads 2D in the spindle, as do the which is reversed with respect to that of the feed external threads 23 in the sleeve 29, all being threads 2e on the intermediate portion of the right-hand in this instance. Such turning of spindle. In the present instance the >feed threads the outer sleeve 29 is continued until the nose 3I 20 are righthand and the spinner head securingv of the inner sleeve is jammed tightly against'the threads 23 are lefthand. With` such an arrange I5 of the fitting. The nose of the tool, ment, turning of the spindle i6V left'war'd (in 50 shoulder with the fitting in place thereon, is then thrust the direction of the .arrow A in Fig. `1) withdraws through the hole I4 and the spinner head I9 is it through the supporting structure 2 I ,pulling the screwed »on the spindle, thus positioning 'the parts spinner head into the work, andl at -»the same as indicated in Fig. 2 for commencement of the time the frictional drag on the spinner head im spinning operation. posed'by the work tends to screw Vthe spinnerhead 55 To effect the `spinning or flaring operation, ever more tightly into place on the spindle. the sleeve head 28a is gripped in a vise or other Provision is desirably made for preventing the wise held against rotation and the spindle I6 spinner head I9 from becoming so tightly jammed revolved in the direction of the arrow A by the on the spindle that its subsequent removal is dif ñcult. For that purpose abutments in the'form 60 handle I8. Inl the event that the tool is located adjacent a Wall or bulkhead, the rod 35 may be of mating teeth 24 and 25 (Fig. 1) are- provided permitted to swing against the wall and thus on the spindle and spinner head, respectiveiy,jso hold'the sleeve l28 against turning. As the spin as to limit the screwing of the spinner head~> on dle I3 revolves it is fed axially by the lead of the to the spindle. The supporting structure 2l is generally'tubii- i ` lar in form, beingthreade'd internally‘at 126 (Fig. 2) to receive the threads 20 on the-spindle‘and threaded externally at 2'I y(Fig. 1) for screwing the same into the threads I2y in the ñtting; >In the present instance such supporting `structure comprises inner and outer'sleeve elements ‘28j 29 threaded together as'indicatedïat-S'B'so that turn ing one sleeve element relative to‘ithe other threads 20 in a direction t'o withdraw it through , the supporting structure 2l so'that the revolving spinner head I‘9 is pulled gradually into the end I3 of the fitting Ill. In this way the end of the iitting is flared outwardto the contour indicated in Fig. 3. Moreover, the throat portion of the end of the‘ñtting within the hole III' is expanded so that the marginal portion of the wall II about such hole! ten'dsïto bite'into the exterior of the changes the length ofthe supporting structure. ñtting. Also the approaching opposed »faces 22 Longitudinal contraction of -the supporting struc 75 andi 3l of tliespinner' head and sleeve'28 `squeeze 2,410,476 5 6 the ñtting between them. As a result, the ñtting is secured to the wall El with eXtreme rigidity. becoming screwed too tightly on to the spindle in Upon completion of the spinning operation described, the supporting structure 2| will usually work piece. the course of the operation of the head upon a 3. A tool of the general type described com be found to be jammed very tightly within the Cl prising, in combination, a supporting structure including two sleeve elements threaded one fitting I0. To remove the tool the workman within the other, a spindle having a tool head holds the outer sleeve 29a against turning, as, for thereon and threaded within the inner sleeve ele example, by means of the handle 36, and backs ment for feed axially of the same as the spindle is off the inner sleeve 28, by turning it to the left, revolved to turn the tool head, the outer sleeve so that the pin 33 is swung from the notch end element being externally threaded for securing wall 34a to the other notch end wall Sáb. This the same within an internally threaded fitting or retracts the inner sleeve 28 axially of the sleeve the like which is to be operated upon, and the 29 from the position of Fig. 3 to that of Fig. 4., inner one of said sleeve elements having a p0r thus relieving the jam. After that the spinner tion projecting axially beyond the outer element head I9 can be unscrewed and the outer sleeve to abut against a shoulder or the like within the 29a unscrewed from the iitting l0 to remove the fitting. tool without any diiiîculty or impediment. 4. _In a tool of the type described for operating To condition the tool for use in a iitting or the upon a reduced diameter end portion of a fitting like of different diameter or having diiïerent pitch threads, it is necessary merely to replace the 20 or the like whose other or larger end portion is interiorly threaded, the combination of a sup outer sleeve element 29 with one of appropriate porting structure including a pair of sleeve ele size and threads. Should the end of the ñtting ments threaded one within the other and which is to be flared be of dilîerent size it is arranged with both ends of the inner element equally simple to screw in place a replacement spinner head of appropriately different size. 25 projecting beyond the corresponding ends of the other element, said sleeve elements each having We claim as our invention: a corresponding wrench engageable head at one 1. In a tool of the type described for flaring a end thereof, the outer sleeve element being exter reduced end portion of a tubular ñtting or the nally threaded for screwing the same into the ñt like, the combination of a generally tubular sup porting structure, a spindle passing through said 30 ting with the projecting end of the inner sleeve element abutted against the shoulder in the ñt supporting structure with one‘end projecting out ting separating its larger and smaller diameter ward beyond the fore part of said structure, said portions, and a tool supporting spindle revolubly spindle being threaded within said structure for mounted within the inner sleeve element. axial withdrawal of said one end of the spindle 5. A tool of the general type described com toward the supporting structure as the spindle is 35 prising, in combination, a supporting structure revolved, and a spinner head of generally T shape including two sleeve elements threaded one with on said one end of the spindle disposed with the in the other, stop means for limiting relative arms of the T projecting laterally of the spindle rotation of the sleeve elements to less than a full and with the stem of the T pointing toward the spindle coaxially with the latter, the undersides 40 revolution, a spindle having a tool head thereon and threaded within the inner sleeve element for of the T arms being sloped inward toward the feed axially of the same as the spindle is revolved stem to enter the reduced end of the fitting and to turn the tool head, the outer sleeve element ñaring it progressively outward as the spindle is being externally threaded for securing the same revolved to withdraw it into the supporting struc within an internally threaded fitting or the like ture and through the fitting, and said spinner which is to be operated upon, the external threads head being removably threaded on said spindle on said outer sleeve element and the threads by threads having a lead opposite to that of the between said sleeve elements both having a lead threads connecting the spindle to said supporting in the same direction, and the inner one of said . structure, whereby frictional drag of the work on sleeve elements having a portion projecting the spinner head incident to its rotation by the axially beyond the outer sleeve element to abut spindle as the latter is revolved will tend t0 against a, shoulder or the like within the fitting. tighten the head on the spindle. 6. A tool of the general type described com 2. In a tool of the type described, the combina prising, in combination, a supporting structure tion of a support, a spindle threaded’therein, a including two sleeve elements telescoped one over spinner head threaded on one end of the spindle, the other and movable axially of each other, one the lead of the threads connecting the head to end of the inner sleeve element projecting beyond the spindle being opposite to that for the threads the corresponding end of the outer sleeve ele connecting the spindle to its support, whereby ment, the outer sleeve element being dimensioned frictional drag of the work on the spinner head incident to its rotation by the spindle as the latter 60 for insertion within a ñtting or the like which is is revolved in said support will tend to tighten to be operated upon by the tool, and a tool sup the head on the spindle, and said head and spin porting spindle revolubly mounted within the dle having mating abutments thereon engageable inner sleeve element. to limit the turning of the head on the spindle in a direction to tighten the threaded connection 65 ARTHUR I. APPLETON. therebetween and thus prevent the head from CARL H. STAHL.