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Oct. 29, 1946.
‘u D_ w_ T_ EVANS
Filed Aug. 16, 1943
2 Sheets-Sheet 1
.2). W. TlTI/‘QJILS
29, I946.
‘ Filed Aug. 16, 1943
2 Sheets-Sheet 2
. I
Patented Oct 29, 1946
2.4101123 *
David William Thomas Evans, Sutton Coldfield,
England, assignor to T. I. (Group Services)
Limited, Birmingham, England
Application August 16, 1943, Serial No. 498,831
In Great Britain September 1, 1942
2 Claims.
(Cl. 51—163)
This invention has for its object to provide
improved apparatus for use in pickling, washing
is attached to the arm I) or c remote from the
or analogous dipping operations on tubes, bars
carrier in forms a bi'ght or loop on which the
and the like, the apparatus being of the type in
tubes n can be placed. Lowering and raising of
the tubes 12 into and out of the bath beneath the
bight is effected by rotation of the shaft or shafts
7'. During such movements the tubes n move
relatively to each other with a rolling or tumbling"
action which ensures exposure of the whole of
the surfaces of the tubes to the bath liquid.
which a number of articles to be treated are car
ried on the bight of a chain or chains or other
?exible member or members (herein termed a
?exible carrier) adapted to lower and raise the
articles into and out of a bath or other receptacle
with a relative rolling or tumbling action.
In the accompanying sheets of explanatory
When a shaft :i is provided on the outer end of
each of the two arms 22, c of the framework, the
tumbling motion can be imparted to the tubes 11
while immersed independently of a raising or
Figures 1 and 2 are respectively an end elevaw
tion and a side elevation of an apparatus con
structed in accordance with the invention for
use in the pickling and washing of metal tubes.
In carrying the invention into effect as shown,
I employ a framework a consisting essentially
of two main frame-like arms I), 0 adapted to
form an L-shaped structure. This framework it
is provided with trunnions d at the junction of
its arms b, c, that is to say, at the angle of the
L, and is pivotally supported on a horizontal
axis by ?xed bearings as e which accommodate
the trunnions. The bearings e are located be
tween a pair of baths 7‘ arranged parallel with
each other, the one bath containing pickling
solution and the other Water. The framework
a is adapted to be swung about its pivot axis
through 90", so that when in one extreme position
one of its arms 2), 0 lies horizontally over one of
The intermediate portion of the ?exible
15 lowering motion by rotating both shafts simul
taneously, raising or lowering of the tubes n being
effected by rotation of one or both of the shafts.
Actuation of the shaft or one of the shafts :i is ef
fected by an electric motor 0 or other convenient
20 source of power through a reduction gear p which
in the example shown is connected to the shaft by
chain-and-sprocket mechanism.
This mecha
nism comprises a chain q connecting a sprocket
1' driven by the gear p to a second sprocket s, and
25 another chain t connecting a third sprocket u
to a fourth sprocket v on the shaft 7', the second
and third sprockets being formed integrally with
each other or secured together in coaxial rela
tionship, and being freely mounted on one of
30 the trunnions d. The other trunnion d may be
the baths f, the other arm being upright, and
when in the other extreme position the previ
ously upright arm lies horizontally over the other
bath, and the previously horizontal arm is up
right. In the drawings the framework it is shown
used for supporting like parts of a similar mech
anism adapted to actuate the other shaft 7' when
two such shafts are employed, so that the two
shafts are independently operable. Alternatively
any other convenient mechanism or mechanisms
may be used for actuating the shaft or shafts 7'.
in one of its extreme positions with the arm b
In carrying out a pickling operation, the frame
upright and the arm 0 horizontal, the arm I)
work a is swung about its pivot axis so that one
being also shown in broken lines in Figure l in
of its arms b, c occupies its horizontal position
the horizontal position it assumes when the 40 over the bath 7‘ containing the pickling solution.
framework is moved to its other extreme position.
The tubes 11 are now loaded on to the bight of
Movement of the framework (1 from either of
the flexible carrier m, and by rotation of the
its extreme positions to the other is effected by
shaft 1' (or one or both of them when two are
means of a worm wheel segment 47 secured to
employed) the tubes are lowered into the bath
one or each of the trunnions d, the segment being 45 beneath. After the pickling operation the flex
engaged by a worm h which is driven by an elec
tric motor 2‘ or other convenient source of power.
At the outer end of one or each of the arms
12, c is mounted a longitudinal shaft :i-having
secured on it a drum or drums k to which is at- '
tached the adjacent end of a ?exible carrier m
for the tubes as n to be treated, the carrier being
formed by a chain or chains or other ?exible
member or members. When only one shaft 1' is
employed the remote end of the ?exible carrier m 55
ible carrier m is moved in the reverse direction
for raising the tubes 11. out of the pickling bath
to the original upper position. The framework
a is now swung through 90° so as to bring the
other of the arms b, 0 over the bath 1‘ containing
water. In this movement the tubes n move lat
erally from the position over the pickling bath
to a position over the water bath. The tubes
are now lowered into the water. After washing
the tubes are again raised, and by continued
action of the shaft 1‘ which actuates the ?exible
carrier m, the latter is caused to assume the po
sition shown in chain-dotted lines in Figure 1,
so that the tubes roll off the carrier on to a deck
or other support (not shown) arranged at one
side of the water bath 1‘. Alternatively the tubes
may be removed by a crane. Subsequently the
framework a is swung back into its initial po
sition over the pickling bath in readiness for the
next operation.
Whilst for most purposes the arms b, c of the
framework a are most conveniently situated at
90° to each other, the invention is not restricted
to this detail, as the angle between the arms,
and also the angle through which the framework
is rotatable may be varied to suit different re
quirements. Also instead of actuating the frame
work a electrically it may be actuated by any
convenient hydraulic, pneumatic or mechanical
By this invention I am able in a very con
venient manner to facilitate and expedite the
handling of tubes, rods or the like in pickling
and washing operations. The invention may also
be used in other industrial operations, such as
galvanising in which it is required to lower and
raise the articles into and out of a bath or other
Having thus described my invention what I
claim as new and desire to secure by Letters
Patent is:
1. Apparatus of the type speci?ed for dipping
tubes, bars or like articles, and having in com
bination a ?exible carrier for the articles to be
treated, a framework on which the carrier is
mounted to provide an Open bight for accom
modating the articles to be treated, movable
means through which at least one end of the
carrier is supported on the framework and by
which the said end can be moved relatively to
the other end of the carrier for varying the depth
of the bight to elevate or lower the articles, and
means whereby the framework is pivotally sup
ported so that it can be swung into different
positions for transporting the articles from one
position to another.
2. Apparatus as claimed in claim 1 in which
the framework comprises two main arms ar
ranged at an angle to each other, and is pivoted
at the junction of the arms on a horizontal axis,
the open bight of the ?exible carrier being
situated between the outer ends of the said arms.
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