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Патент USA US2079991

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May 11, 1937.
Filed June 1, 1955
Patented May 11, 1937
Charles E. Farrington, Phoenixville, Pa.
Application June 1, 1935, Serial No. 24,485
4 Claims.
This invention relates to agitator drums and
more particularly to a method and means for
equipping ordinary drums with agitator devices
for effectively stirring and mixing the contents
a of the drums so equipped.
Agitator-equipped drums for transporting
paints and other such liquid or semi~liquid compounds are now well~known in the art and are
quite generally employed. Such drums are disit} closed in my own prior Patents No. 1,336,830,
(01. 285-50)
standard drum for the reception of a stirrer bar
without involving the necessity of removing the
said head from the drum body nor the necessity
of employing any relatively expensive or com
plicated tools or equipment.
A further object of the invention is the pro
vision of members which are so operatively re
lated to each other as to permit their ready se
curernent to the drum head of a standard drum
in such manner as to provide a hung hole as
granted April 13, 1920, and No. 1,970,367, granted
August 4, 1934:, from which it will be observed
sembly in the said drumhead through which a
stirrer bar may be inserted for operative dispo
that the upper and lower heads thereof are respectively adapted to receive and maintain in
sition within the drum, as well as to the side
wall of the drum adjacent the bottom thereof to
15 proper operating position therebetween an agitating device in the form of a stirrer bar of suitable design. It will be appreciated, of course,
that the most expensive element of the agitatorequipped drum is the drum itself, the cost of
provide a faucet opening, the said parts being of 1°
such order that they may be operatively as
sembled either upon the drumhead or upon the
side wall of the drum without necessitating the
removal of either drumhead from the drum body
‘~30 which to produce is quite a considerable item.
These drums, which are generally of a 55-gallon
capacity, are usually constructed entirely of sheet
and without requiring any alteration or modi?- 20
cation thereof other than to provide in the upper
head and side wall of the drumholes or apertures
metal of sufficiently heavy gauge to adequately
withstand the pressure of the contents thereof.
of requisite diameter.
Other objects of the invention and advantages
‘25 Moreover, the top and bottom drumheads are
resulting therefrom, as well as economies effected 25
welded or otherwise so permanently secured to
the side walls thereof that it is the general practice to prepare the drumheads for proper reception of the agitating device preliminarily and
.50 prior to the operation of securing the drumheads
thereby, will be apparent more fully hereinafter,
it being understood that the invention consists.
substantially in the combination, construction,
location and relative arrangement of parts, as
well as in the method of assembling the same, 30
all as is more fully described hereinafter, as is
shown in the accompanying drawing, and as is
?nally pointed out in the appended claims.
In the accompanying drawing, which il1us-.
trates and exemplifies a preferred embodiment 35
of the present invention:-~
Figure 1 is a vertical sectional view of a stand
ard drum reconditioned in accordance with the
in position.
I have found that there is available in the open
market an exceedingly large number of secondhand or used ordinary drums which have never
35 been provided with agitator devices but which
are nevertheless well adapted to be reconditioned
to accommodate agitators of the type disclosed
in my prior patents aforesaid. When so recon-
ditioned and equipped with agitators, these
40 drums serve admirably as transport containers
for paints and other liquid and semi-liquid compounds. When it is realized that these used
drums may be purchased at a cost so far less than
that of a new drum that even when reconditioned
45 to include agitator devices, the total cost of each
reconditioned drum is materially less than the
cost of producing a completely new agitator-
present invention;
Figure 2 is an enlarged diametrical sectional 40
view of the bunghole assembly as installed in the
upper head of the reconditioned drum;
Figure 3 is a plan view of one of the members
of the bunghole;
Figure 4 is a view showing the manner of pro- 45
jecting the said member through the apertured
drumhead into operative position;
equipped drum, it will be evident that a considerable saving is effected without any decrease in
50 the ef?ciency of operation of the reconditioned
drum. To effect this saving is one of the principal objects of the present invention.
Figure 5 is a view showing the several parts of _
the bunghole ?tting in the process of being oper
atively assembled upon the apertured drumhead; 50
Figure 6 is a view showing the several parts
Among the further objects of the present in~
vention is to provide an exceedingly simple and
effective method of adapting the upper head of a
of the bunghole ?tting completely assembled
and with the assembling tool still in position.
Referring now more particularly to the draw- 55
ing, it will be observed that the present invention
contemplates the reconditioning of a standard
type drum ID to accommodate within the interior
thereof an agitating device, preferably of the
type designated by the reference numeral H.
when the ring I8 is manipulated into the position
shown in Figure 4.
It will further be observed, as appears most
clearly in Figures 3 and 4-, that the split ring mem~
ber E8 is of maximum radial dimension at the
The drum which is so adapted to be reconditioned
is of the more or less conventional type having the
opposed upper and lower drumheads l2 and l2a
point substantially diametrically opposite the free
which are welded or otherwise permanently se
cured to the side walls (217 of the drum.
drums are of the type such as are generally em
ployed for transporting oil and other liquid or
semi-liquid compounds and are usually char
acterized in that they are provided with a bung
tending ?ange 21. The central opening of the
bushing is interiorly threaded, as at 28, to thread
hole located in the side wall of the drum or in one
edly receive the bunghole cap or closure mem
ber. As appears most clearly in Figure 2, the
bushing 19 is adapted to be threadedly connected
or the other of the drumheads adjacent the
to the split ring member 18 in such manner as to
peripheral mar-gin thereof. In order to opera
tively accommodate an agitating device in the
form of a stirrer bar, like that designated by the
20 numeral l I in Figure 1, within the interior ‘of the
drum, it is, of course necessary to provide coaxial
bearings in the opposed drumheads I2 and Ho
of the drum for respectively receiving the oppo
site extremities of the stirrer bar which is de
signed for rotation about the common vertical axis
of the vertically spaced bearings.
To this end, the upper head l2 .of the drum is
centrally cut out to provide an opening [3 there
in of a diameter suf?cient to permit the agitat
ing device II to be freely projected therethrough
into the interior of the drum. This agitating
device H, which may be of any desired form, is, in
the present exempli?cation of the invention, in
the form of a relatively thin elongated ?at bar or
blade the central portion M of which is radially
offset from the coaxially opposed extremities I5
and I6 thereof. The upper extremity l5 of the
stirrer bar is arranged for vertical projection
through the opening I3 of the upper drumhead I l
of the drum, while the lower extremity i6 thereof
is adapted to be pivotally anchored upon a pivot
pin or stud I‘! secured to the bottom i2a of the
drum in vertical alignment with the central axis
of the opening 13. The centrally offset portion
14 of the stirrer bar is twisted upon itself to fa
cilitate the stirring and mixing of the compound
contained within the drum when the stirrer bar
is rotated about its vertical axis of rotation. In
order to effect this rotation of the stirrer bar the
upper extremity thereof is adapted to be engaged
by an operating handle (not shown) of the types
more particularly disclosed in my prior patents
aforesaid, it being a characteristic feature of these
terminal extremities 23-24 thereof. The bush
ing it! is provided with a depending annular
flange 25 which is exteriorly threaded, as at 26,
and in addition is provided with a radially ex 10
clampingly engage the marginal edge of the cen
tral opening [3 in the drumhead between the
upper face of the member 18 and the lower face
of the radial ?ange 27 of the bushing. In order 20
to accomplish this, the split ring member i8 must,
of course, be positioned beneath the drumhead II
in such manner that the interiorly threaded open
ing 2| thereof is in coaxial registry with the cen—
tral opening 53 in the drumhead. This is effect
cd by the use of a tool 29 of the type shown in Fig
ures 5 and 6 and which is in the form of a
spring steel strap doubled upon itself to provide
a pair of branches 3t and 3| the lower ends of
which are respectively provided with outwardly fi
turned terminal extremities 32 and 33. Due to
the inherent resiliency of the material of which
the tool 29 is formed, the branches 30-3! there
of tend constantly to spring away from each other
into the full-line position shown in Figures 5 1'
and 6.
To assemble the split ring member 18 and the
bushing l9 securely together in the relation shown
in Figure 2, the split ring I3 is ?rst threaded
through the central opening l3 of the drumhead 40
I 2, this being accomplished most expeditiously by
initially inserting one of the terminal extremi
ties 23-24 thereof into the said opening l3 and
then rotating the split ring member IS in such
manner as to locate the said member entirely ,_
beneath the drum head I2. The tool 29 is then
also inserted through the opening 13 in the drum
as well as through the interiorly threaded open
ing 2| of the split ring, this being accomplished
by pressing the branches 30-31 of the tool to 50
gether suf?ciently to permit the terminal ex
tremities 32-33 to pass freely through the said
registering openings 13 and 2|. Upon releasing
handles that the blade engaging portion thereof
is adapted to be journaled within the bung hole
?tting, the several parts of which are operatively
assembled together and secured to the marginal
edge of the opening ‘IS in the manner and by the
the branches 38-3! they spring apart su?iciently
means now to be described.
wardly, the split ring 18 is held ?rmly against
As appears most clearly in Figures 2 to 6, in
clusive, this bunghole assembly essentially com
prises a crescent-shaped split ring member l8, a
the bottom surface of the drumhead l2 with the O
to cause the terminal extremities 32-33 thereof ;
to underlie and engage diametrically opposed por
tions of the under surface of the split ring is in
such manner that as the tool 29 is drawn up
the central axis of the disk. The marginal wall of
the opening 2! is split, as at 22, at the point of its
smallest radial dimension, the separation between
the terminal extremities 23-24 of the split ring
being merely sumcient to permit the portion of the
drumhead 12 which marginally surrounds the
central opening l3 therein to be accommodated
threaded opening 2! of the member l8 in axial
alignment with the central opening l3 of the
While the tool so engages and retains the split
ring E8 in position, the bushing i9 is slipped over
the tool 29 (see Figure 5) and downwardly there
of for threaded engagement with the split ring I 8,
it being apparent that as the bushing is thread
edly secured to the split ring, the arms 39-3l
of the tool 29 are gradually compressed inwardly
and toward each other into the dotted line posi
tion shown in Figure 5. When the bushing I9 is
threadedly secured to the split ring member l8
suf?ciently to provide a “?nger-tight” hold be
7.5 between the said terminal extremities 23-24
tween these parts, the placer tool 29 is removed,
bushing l9 and a bunghole cap or closure mem
ber 20. The crescent-shaped member i8 is in
reality in the form of a disk of substantial thick
ness in which is provided an interiorly threaded
opening 2| located eccentrically with respect to
2,079,99 1
following which a wrench may be applied to the
bushing l9 to effect a leak-tight threaded connec
tion between the members 18 and I9. Preferably,
gaskets 30a and 301) are respectively disposed
UK upon opposite sides of the drum head 12 to insure
an absolutely leak-tight connection between the
threadedly connected members I8 and I9. Due to
the particular shape and construction of the split
ring member l8, including as it does a zone of
10 maximum strength in the portion thereof which
is diametrically opposite to the free extremities
23—24 thereof, it will be evident that very con
siderable power may be applied to the bushing IS
in effecting the leak-tight connection without in
curring any danger of cracking or otherwise
weakening the split ring member, this being due
to the fact that the point of greatest strain in
this latter member has been subsantially rein
With the parts l8, l9 and 300, secured together
and to the drum head l2 in the manner just de
scribed, it will be apparent that the drum I0 is as
fully and completely adapted for reception of an
agitating device as though it had been originally
specially designed and constructed to receive the
latter. Not only is a very considerable saving ef
fected due to the saving in cost of the drum itself
but there is also effected a considerable saving in
the cost of equipping the upper head of the drum
35) with the bung hole assembly due to the fact that
the several parts of this assembly are mechanical
ly assembled and secured together by the use of
simple and inexpensive tools.
As will he obviously appreciated, the bunghole
faucet (not shown) through which the contents
of the drum may be removed.
It will be understood, of course, that the in
vention is susceptible of various changes and
modi?cations which may be made from time to
time without departing from the real spirit or
general principles thereof and it is accordingly
intended to claim the same broadly, as well as
speci?cally, as indicated in the appended claims.
What is claimed as new and useful is:——
1. In a reconditioned drum of the character
described, having a perforation in a wall thereof,
an interiorly threaded split annulus adapted to
be manipulated into ?atwise engagement with
the inner surface of said perforated wall, and an
exteriorly threaded bushing engageable with said
annulus and having a radial ?ange adapted to
overlie the outer surface of said drum marginally
surrounding said perforation, said ?ange coacting
with said annulus to clamp therebetween the
portion of the drum wall marginally surrounding
the perforation therein.
2. In a reconditioned drum of the character de
scribed, in combination, a drum having a perfora
tion in one of the Walls thereof, an eccentrically
apertured disk disposed ?atwise against the inner
surface of said wall with the aperture thereof in
registry with the perforation in said drum wall,
the aperture in said disk being interiorly thread
ed for threadediy receiving a ?anged bushing and .
the marginal wall of said aperture being split ap
proximately at the point of its least radial dimen
sion to permit free insertion of the disk through
the drum perforation without requiring the di
ameter of the disk aperture to be less than that I
?tting or assembly of the present invention may
of the drum perforation, and a ?anged bushing
vary structurally to adapt it to different types of
stirrer bars and operating handles therefor. Thus,
the bushing member H], which in each instance
is designed for threaded engagement with the
threadedly engaging said disk whereby to clamp
split ring member l8 in such manner that the
said members I8 and I9 clampingly engage oppo
site faces of the drumhead I2, may be designed
to removably carry a stirrer bar supporting pin
45 of the type disclosed in my pending application
Serial No. 663,739, ?led March 31, 1.933. Inas
much as this supporting pin forms no part of the
present invention, it is deemed unnecessary to de
scribe it in detail herein, it being mentioned
50 merely to illustrate the adaptability of the present
invention to various arrangements and styles of
agitator-equipped drums.
The bunghole assembly as hereinbefore de
scribed is, of course, not limited in its applica
55 tion to the drumhead alone, but instead may be
employed in any other part of the drum to pro
vide therein an interiorly threaded opening for
receiving any desired type of fitting. For ex
ample, the assembly of the present invention may
60 be provided in the side Wall of the drum adjacent
the bottom thereof, as at 34, for the reception of a
the portion of the drum wall marginally sur
rounding the perforation therein between the
bushing ?ange and the apertured disk.
3. In a reconditioned drum of the character de
scribed, in combination, a drum having a perfo
ration in one of the walls thereof, an eccentrlcal—
ly apertured disk the marginal wall of Which is
split approximately at the point of its least ra 45
dial dimension to provide a pair of terminal ex-,
tremities spaced apart sufficiently to permit the
disk to he slipped through said perforation into
a position overlying the inner surface of said per
forated wall, the diameter of the disk aperture 50
being approximately the same as and the overall
diameter of said disk being considerably greater
than the diameter of said perforation, and a bush
ing directly engaging said disk to clamp there
between the portion of the drum wall marginally 55
surrounding the perforation therein.
4. In a drum of the character de?ned in claim
3 wherein the aperture in said disk is interiorly
threaded and wherein the bushing is exteriorly
threaded for threaded reception within said aper
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