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Nov. 5, 1946.
A. l. APPLETON [er1-Al.y
Filed oct. 8', 1945
@7'. 4.
2,410,476 .
Patented Nov. 5, i946
’ r¿v'f2,4iy0,4¿'iegl.'
_. '
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.
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.
_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
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
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.
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.
, .
arspindlelö .having a squared outer end I‘I. to
Fig. 4 is a fragmentary longitudinal 'sectional
_ viewî illustrating the contraction of the .support
whichfmay be applied any suitable handle for
ing structure of the tool in freeing it from the
turning thesamafsuch, for example, as a con
ventional ratchet handle indicated in phantom at
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
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.
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
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
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
posed'by the work tends to screw Vthe spinnerhead 55
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
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
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
therebetween and thus prevent the head from
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