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Патент USA US3026560

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March 27, 1962
R. s. BOLLIN
3,026,550
APPARATUS FOR PREPARING TUBING FOR A SWEATED JOINT
Filed April 22, 1960
2 Sheets-Sheet 1
714a:2_-A13,; 2“|.
FIE-.1
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INVENTOR.
ROBERT s. BOLI-IN
BY
March 27, 1962
R. s. BOLLIN
3,026,550
APPARATUS FOR PREPARING TUBING FOR A SWEATED JOINT
Filed April 22, 1960
2 Sheets-Sheet 2
L’l4
INVENTOR.
/
'
ROBERT
s. BOLLIN
am wag»
United States atent
3,326,553
Patented Mar. 27, 1962
1
2
3,026,550
.As shown most clearly in FIG. 2 the apparatus of the
present invention includes an electric motor 10 to which
current is supplied by means of a suitable cable 11. The
APPARATUS FOR PREPARING TUBING FOR A
SWEATED JOINT
Robert S. Bollin, Toledo, Ohio, assignor to The Toledo
Pipe Threading Machine Company, Toledo, Ohio, a
motor 10 may be started or stopped by means of a suit
Filed Apr. 22, 1960, Ser. No. 24,009
7 Claims. (Cl. 15-—4)
justably secured to a base 14 by means of suitable screws
corporation of Ohio
able switch 12 likewise shown in FIGS. 1 ‘and 3.
The motor 10 is protected by a cover 13 which is ad
15 extending through a mounting plate 16 into suitable
slots 17 located in the base 14. A plurality of holes 18
This invention is concerned with an apparatus for 10 are provided in the base for securing the entire unit to a
cleaning a portion of the outside surface of a length of
work bench (not shown). A drive shaft 19 extends
pipe or tubing or the like and removing the burrs from
through the motor 10 and protrudes outwardly at each
both the inside and outside of the end of the tubing in
end of the motor cover 13.
preparation for making a sweated joint. More particular
A deburring drum 20 is mounted on the shaft 19 ad
ly, this invention is concerned with apparatus for prepar
jacent the motor 10 as shown in FIG. 2. The deburring
ing tubing or the like for a sweated joint which includes
drum 20 has a conical portion 21, the outer surface of
means for supporting and positioning the tubing in a
which is preferably at a 15° angle from the axis of the
proper location relative to a brush and deburring drum
drive shaft 19, immediately adjacent the motor cover 13.
wherein the supporting and locating means is adjustable
20 Suitable cutting edges are formed, as by knurling or ser
to compensate for brush wear.
rating, on the outer surface of the conical portion 21, and
In the past, in order to prepare a length of tubing
these edges remove any burrs from the outside surface
for a sweated joint, the outside surface of the endmost
of the end of the tubing 22 when positioned as shown by
' portions of the tubing washand cleaned to remove all
the dotted lines in FIG. 2 and the solid lines in FIG. 4.‘
foreign material by rubbing it with emery paper or the
The conical portion 21 of the drum 20 extends into a suit
25
like, and the burrs on the ends of the tube which resulted
able recess ‘23 formed in the motor cover 1'3. Thus if
from cutting the length of the tubing were removed with
a hand ?le.
Oftentimes, however, the outer surface of
the tubing 22 is urged longitudinally in a direction parallel
to the shaft 19 with an excessive amount of force the
the tube was not evenly cleaned throughout its entire
endwise movement of the tubing will be stopped by‘the
circumference and a poorly sweated joint resulted. Like
motor cover 13 before the tubing can extend beyond the
wise the burr removal from the end of the tube was 30 conical portion 21 of the drum 20 and become out or bent
uneven.
Various attempts have been made to properly position
an end section of tubing adjacent a wire brush which,
by the edge of the drum.
A brush assembly 24 which may be made up of a
plurality of individual brushes 25 is likewise mounted for
when rotated at high speeds, very effectively cleaned the
rotative movement on the drive shaft 19, and the peripheral
outer surface of the tube. However, while the surface 35 surface of the brush assembly 24 cleans a portion of the
of the section was thoroughly cleaned when the brushes
outside surface of the tubing 22 as it is moved along the
were new, various problems arose in positioning the tube
brush ‘assembly 24. As shown most clearly in FIG. 2
relative to the peripheral surface of the brush when the
one face of the brush assembly 24 is in substantial juxta
brush became worn.v This, in turn, resulted in excessive 40 position with the drum 20 and the opposite face of the
brush replacement.
brush assembly engages a suitable washer 26 that is main-v
It is, therefore, the object of this invention to provide
tained in position on the shaft ‘19 by means of a nut 27.
apparatus for preparing tubing for a sweated joint which
By tightening the nut 27 on the shaft 19 the brush assem
not only cleans the outer surface of the tubing, but also
bly 24 is urged against the drum 20 by the washer 26.
removes the burrs from both the inside and outside of
45 The inner surface of the drum 20 is urged against a bear
the end of the tubing.
ing assembly 28 which is retained in the motor cover 13
A further object of the invention is to provide means
adjacent the recess 23 and is in engagement with a shoul
for brushing and deburring the end of a length of tubing
der 29 on the shaft 19.
in preparation for a sweated joint which provides means
According to the present invention atube engaging
for accurately positioning the tubing relative to the brush 50 member 30 is provided for maintaining the tubing 22 in
and deburring means and which can be selectively adjusted
to compensate for brush wear.
.
the proper position relative to the brush assembly 24 and
the deburring drum 20. This member 30 includes the
These noted and more speci?c objects and advantages
?rst portion 31 in the form of a tab which extends in the
of the invention become apparent from the following de
direction of the drive shaft 19 and the second port-ion 32
tailed description and from the drawings wherein like 55 in the form of an end guide plate which is spaced from
numbers are used throughout to indicate like parts.
FIG. 1 is a plan view of a tubing deburring and brush
ing apparatus embodying the present invention;
the outermost face of the brush assembly 24. As shown
' most clearly in FIG. 4, the tab 31 has its innermost edge
33 spaced from the peripheral surface of the brush assem
FIG. 2 is an elevational view, partially in section, taken
bly 24 and its relatively ?at surface angularly disposed
along the lines 2-~2 of FIG. 1;
60 to this peripheral surface for supporting the tubing 22
FIG. 3 is a view in elevation taken along the lines
in contact with the brush assembly 24. The guide plate
3-3 of FIG. 1;
_ 32 has an edge 34 which cooperates with the ?at surface
FIG. 4 is an enlarged perspective view with parts broken
of the tab 31 to form a guide for maintaining the tubing
away showing the location of the positioning and sup
22 in a predetermined position relative to the peripheral
porting means of the present invention relative to the 65 surface of the brush assembly 24 when tubing is supported
brush and deburring drum.
by the ?at surface.
3,026,550
As shown by the dotted lines in FIG. 3 a number of
different sizes of tubing can be cleaned and deburred by
using the apparatus of my invention because only the
?at surface of the tab 31 and the contoured edge 34 of
the end plate 32 contact the tubing 22. In fact, I have
used my apparatus for cleaning and deburring tubing
having an outside diameter which varied from 1%; inch to
four inches.
4
a tube engaging guide member spaced from said brush,
said member having a ?rst portion extending in the direc‘
tion of said drive shaft and a second portion spaced from
the outermost face of said brush, said ?rst portion having
an edge spaced from said peripheral surface of said brush
and a relatively ?at surface angularly disposed to said
peripheral surface for supporting the tubing in contact
with said brush, said second portion having an edge co
operating with said ?at surface to form a guide for main
In order to obtain the best possible cleaning action
from the brush assembly 24 the contoured edge 34 has 10 taining the tubing in a predetermined position relative to
said peripheral surface of said brush when said tubing is
substantially the same shape as the peripheral surface of
supported by said flat surface, and means mounting said
the brush assembly 24, and this surface is spaced approxi
guide member for movement in a direction normal to the
mately 1,66 inch outwardly from this curved edge 34. The
axis of said brush whereby said edge is moved toward said
tab 31 is longer than the peripheral edge of the brush
assembly 24 and extends to a point adjacent the deburring 15 peripheral surface to maintain the spacing between said
edge and said peripheral surface substantially constant as
drum 20 to support the tubing 22 while it is in contact
with the drum 20.
In order to prevent the operator from becoming injured
by the deburring drum 2%) and the brush assembly 24, a
housing 35 encloses the entire unit including the motor
10, ‘deburring drum 20 and the brush assembly 24 and
this housing is bolted to the base 14. As shown in FIG.
the brush is worn away.
2. Apparatus as claimed in claim 1 wherein the ?rst
portion of the member is longer than the peripheral sur
face of the brush and extends to a point adjacent the burr
removal means whereby the relatively ?at surface supports
the tubing in contact with said burr removal means.
2 a suitable access opening 36 is provided in the end of
3. Apparatus as claimed in claim 1 including a base
the housing 35 to permit the replacement of the brush as
for mounting the motor, a housing for enclosing the
sembly 24 after it becomes worn, and a work receiving 25 motor, burr removal means and brush, said housing being
opening 37 is provided in the housing 35 adjacent the
rigidly mounted on said base and having an access open}
opening 36-v
ing for permitting the replacement of worn brushes, and
An important feature of the invention is the fact that
the tube engaging member being adjustably secured to
the tube engaging member 30 is selectively secured to the
said housing, the second portion of said member remov'd
housing 35 in such a fashion that it may be moved in a 30
direction normal to the axis of the drive shaft 19 so that
the relative position between the various parts of the tube
engaging member 30 and the peripheral surface of the
brush assembly 24 may be maintained constant as the
ably covering the access opening.
4. Apparatus as claimed in claim 1 wherein the edge of
the second portion of the tube engaging member ‘which
cooperates with the ?at surface to form a guide for main
taining the tubing in a predetermined position has a con‘
brush is worn away. More particularly, the guide plate 35 tour substantially the same as the peripheral surface of the
32 has an extended leg 38 having a pair of aligned slots
brush.
39 formed therein as shown in FIG. 3. A second exten
5. In apparatus for preparing a plurality of sizes of
sion '40 containing a similarly formed slot 41 also forms a
tubing for a sweated joint, a motor, a cover for enclosing
part of the plate 32 which is located opposite the curved
said motor, a drive shaft extending outwardly from said
edge 34. Suitable cap screws 42 extend through the 40 motor through said cover, a deburring drum mounted on
slots 39 and 41 and are threadably received in the end of
said shaft adjacent said cover, a brush having a peripheral
the housing 35. By maintaining the common longitudinal
surface for cleaning a portion of the outside surface of
axis of the slots 39 substantially parallel with the axis of
said tubing mounted on said shaft with one face in sub
the slot 41, the cap screws 42 may be loosened and the
stantial juxtaposition with said drum and on the opposite
entire tubeengaging member 30 can be moved in a direc
side thereof from said cover whereby said outside surface
45
tion of the slots 39 and 41.
is cleaned and deburred simultaneously as the tubing is
By completely removing the cap screws 42 from the
moved into contact with both said burr removal means.
housing 35 the tube engaging member 30 can be removed
and‘ said‘ peripheral surface, and tube engaging guide
from the apparatus. The plate 32 of this tube engaging
member mounted adjacent said brush, and said drum for
member 30 forms a covering for the access opening 36,
maintaining the tubing in a predetermined position rela
and by removing the tube engaging member 30 as previ 50 tive to said brush and said drum.
ously described, the brush assembly 24 may be replaced.
6. In apparatus for preparing a plurality of sizes of
As shown in FIGS. 1 and 2 the drive shaft 19 protrudes
tubing for a sweated joint including a cylindrical brush
outwardly from the housing 35 at an end oppositely dis
rotatable about its axis and having a peripheral surface
posed from the access opening 36.
In order to com
for selectively engaging a portion of the outside surface
pletely prepare the tubing 22 for the sweated joint, means 55 of the tubing; the improvement comprising a deburring
in the form of a tapered internal reamer (not shown) may
drum mounted for rotation about the axis of the brush,
be received in a chuck 43 mounted on this protruding end
said drum being in substantial juxtaposition with said
of the drive shaft 19. Any suitable tapered reamer may
brush at one end thereof, and a tube engaging member
be inserted in the end of the tubing 19 either before or
for maintaining the tubingin a position offset from said
after it is inserted in the work receiving opening 37 in 60 axis and with a portion of the outside surface of the tub
the housing 35.
ing simultaneously in contact with both the drum and the
I claim:
peripheral surface of the brush whereby said drum re
1. Apparatus for preparing a plurality of different sizes
moves burrs from said outside surface as said peripheral
of tubing for a sweated joint comprising a motor having
65 surface contacts the tubing, said member having a portion
a drive shaft extending therethrough, means for removing
burrs from the outside surface of the end of the tubing
mounted on said shaft adjacent said motor, a brush having
a peripheral surface for cleaning a portion of the outside
substantially parallel to said axis and extending along said
peripheral surface.
simultaneously as the tubing is moved intocgntact with?
position with said burr removaimeanswhereby said. out
7. In apparatus for preparing a plurality of sizes of tub—
ing for a sweated joint, a shaft, means for removing burrs
surface of said tubing mounted on said shaft with one
70 from the outside surface of the end of the tubing mounted
face in substantial juxtaposition with said burr removal
on said shaft, and a brush having a peripheral surface for
means and on the opposite side thereof from said motor
cleaning a portion of the outside surface of said tubing
whereby said outside surface is cleaned and deburred
mounted. on said shaft/with one face in substantial juxta
both said burr removal means and said peripheral surface, 75 side surface is cleaned and deburred simultaneously as the
q
3,026,550
5
6
tubing is moved into contact with said burr removal means
and said peripheral surface, said burr removal means com
prising a drum having a substantially conical portion for
contacting the end portion of said tube, at least a portion
of said drum having a diameter greater than the diameter 5
of said brush, said conical portion having cutting edges
formed on the outer surface thereof.
References Cited in the ?le of this patent
UNITED STATES PATENTS
1,106,795
Ewald _______________ .. Aug. 11, 1914
2,199,109
2,424,160
2,635,393
2,637,864
Maxwell et a1 __________ __ Apr.
Greene _______________ __ July
Barth ________________ __ Apr.
Swift et al _____________ ..- May
2,859,627
Gallop _______________ __ Nov. 11, 1958
30,
15,
21,
12,
1940
1947
1953
1953
FOREIGN PATENTS
875,280
10
France _______________ __ June 15, 1942
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