Improvements in Apparatus for Scouring and Wiping Tinned Sheet Iron and other Metals.
Year: 1890

page_text: Date of Application, 27th May, 1890
Complete Specification Left, 24th Feb., 1891-Accepted, 28th Mar., 1891
PROVISIONAL SPECIFICATION.
Improvements in Apparatus for Scouring and Wiping Tinned Sheet
Iron and other Metals.
I, GEORGE FREDERICK REDFERN, of the firm of G. F. Redfern & Co., the
General Patent Office, 4, South Street, Finsbury, in the County of Middlesex,
Patent Agents, do hereby declare the nature of this invention (a communication
from Francois Sculier, of Saint Ouen (Seine), in the Republic of France,
Gentleman,) to be as follows :-
This invention relates to apparatus for scouring and wiping tinned sheet iron and
other metals.
Hitherto the operation of scouring iron plates after they have been tinned has
been effected by hand and was therefore very costly and moreover the respiration
of the dust by the operator was the cause of grave organic disorders. From a
commercial point of view this method of operating possesses another disadvantage,
videlicet, the plates during their manipulation become misshapen and sometimes even
broken which occasions considerable loss.
Attempts have been made to perform this work mechanically but without success
principally because the rubbing of the machine removed the polish or brilliance
from the tinned plates.
By these improvements all the above stated objections are overcome, and in
carrying out the invention the tinned plate as it leaves the bath is brought between
two sets of superposed cylinders covered with suitable wiping material such as skin,
felt or the like and having besides their rotary drawing motion, an alternating
longitudinal movement in the direction of their axes, the sets of cylinders being
superposed in such a manner that a sufficient space is left between them to allow
the tinned iron plate to pass, whilst remaining in continual contact with it, and the
longitudinal to-and-fro movement of the wiping cylinders or rollers taking place in
such a manner that the upper rollers move towards the right hand when the lower
rollers are moving towards the left hand and vice versa.
It is well known that to effect the wiping the plates must be covered as uniformly
as possible with dust.
This result is obtained by directing a current of air from a centrifugal or other
blower over the plates before their passage through the wiping rollers, the dust
being introduced into the said air-current and mixing therewith becomes finely
subdivided and is projected uniformly over the whole surface of the plates, the
current, at the same time cooling them.
Dated the 27th day of May 1890.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Apparatus for Scouring and Wiping Tinned Sheet
Iron and other Metals.
I, GEORGE FREDERICK REDFERN, of the firm of G. F. Redfern & Co., the
General Patent Office, No. 4, South Street, Finsbury, in the County of Middlesex,
Patent Agents, do hereby declare the nature of this invention (a communication
from abroad by François Sculier, of Saint. Ouen (Seine), in the Republic of France),
SD 071

page_text: and in what manner the same is to be performed, to be particularly described and
ascertained in and by the following statement:-
This invention relates to apparatus for scouring and wiping tinned sheet iron and
other metals.
Hitherto the operation of scouring iron plates after they have been tinned has
been effected by hand and was therefore very costly and moreover the respiration,
of the dust by the operator was the cause of grave organic disorders. From a
commercial point of view this method of operating possesses another disadvantage,
videlicet the plates during their manipulation become misshapened and sometimes
even broken which occasion considerable loss."
Attempts have been made to perform this work mechanically but without success,
principally because the rubbing of the machine removed the polish or brilliance
from the tinned plates.
By these improvements all the above stated objections are overcome and in
carrying out the invention the tinned plate as it leaves the bath is brought between
two sets of superposed cylinders covered with suitable wiping material such as skin,
felt or the like and having, besides their rotary drawing motion, an alternating
longitudinal movement in the direction of their axes, the sets of cylinders being
superposed in such a manner that a sufficient space is left between them to allow
the tinned iron plate to pass, whilst remaining in continual contact with it, and the
longitudinal to-and-fro movement of the wiping cylinders or rollers taking place in
such a manner that the upper rollers move towards the right hand when the lower
rollers are moving towards the left hand and vice versa.
It is well known that to effect the wiping the plates must be covered as uniformly
as possible with dust.
This result is obtained by directing a current of air from a centrifugal or other
blower over the plates before their passage through the wiping rollers, the dust
being introduced into the said air current and mixing therewith becomes finely
subdivided and is projected uniformly over the whole surface of the plates, the
current at the same time cooling them.
In order to enable the invention to be fully understood I will describe the same
by reference to the accompanying drawing, in which :-
Figure 1 is an elevation of the improved apparatus.
Figure 2 is a plan, and
Figure 3 is an end view partly in section.
Similar letters in all the figures indicate similar parts.
A is the frame of the machine B are the wiping cylinders. These cylinders
(twelve of which are shewn in the drawing by way of example six above and six
below) are connected two by two horizontally by an endless band 6 which performs
the wiping operation and which is preferably formed of skin. The wiping cylinders
are driven from pulleys H keyed on the spindles of the first of the series of
rollers B the motion being transmitted by means of endless chains h¹ passing over
sprocket wheels keyed on the spindles of the other rollers. The wiping rollers
also receive a to-and-fro movement in the direction of their axes of rotation for
which purpose the spindles 61 of the rollers B are arranged to slide loosely in their
bearings and are of such a length as to bear against cams g arranged on each side
of the spindles in opposite directions and keyed on a rod G moved longitudinally
and perpendicularly to the axes of the rollers. The cams are of a height calculated
to obtain a sufficient displacement of the rollers to effect a perfect wiping operation.
The cams are so arranged that the upper rollers move in an opposite direction to
the lower rollers that is to say from right to left, for example, if the other rollers
move from left to right and it is this movement in opposite directions which effects
the wiping. The upper and lower rollers turn together and thereby draw along
the plates which they wipe. The rods G are operated by connecting rods F
jointed to the said rods and mounted on cranks E keyed on the shaft of the driving
Dulley M.

page_text: C, C are two rollers connected together by an endless band C and which serve
to bring the plates from the bath to the wiping rollers, but any other suitable
means may be employed for effecting the transfer of the plates from the bath to the
wiping rollers.
Although I have described the plates as being carried along and delivered to the
cylinders horizontally I sometimes so arrange the apparatus that they may be
carried along and delivered to the cylinders vertically.
In order to clean the wiping bands I employ brushes placed at any desired point
of the passage of these bands the hair of the said brushes being placed vertically to
the said bands. The brushes are not shewn in the drawings as other means may
be employed for cleaning the bands.
Hitherto one of the chief difficulties to be overcome has been. to effect the
distribution of the dust over the sheets of tinned iron in a uniforma manner and at
the same time in sufficient quantities to absorb the fatty matters.
To effect these objects receptacles K are provided in which the necessary dust
is placed; these receptacles communicate with the central portion of centrifugal
blowers through passages k, which force the dust through pipes L above and
below the path of the plates to be wiped against which plates the dust is forced
through openings M provided with movable plates which allow of the size of the.
openings being regulated according to the quantity of dust to be supplied.
This arrangement possesses the double advantage of allowing the plates to be
supplied with dust and at the same time cooled by the current of cold air.
The operation of the apparatus is as follows:-
The plates are brought from the bath on the carrier c to the rollers B, which
carries them along and wipes them; during their passage between the carrier
rollers and the wiping rollers and also between the latter the plates receive a
current from the blowers which cools them and also projects over them a certain
quantity of dust. The plates on leaving the rollers are ready for packing.
Although in the drawing centrifugal blowers are shewn it will be understood that
other kinds of blowers may be employed.
Having now particularly described and ascertained the nature of the said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
:-
1. In machines for scouring and wiping tinned sheet iron and other metals the
employment of superposed wiping cylinders having two movements, one of rotation
in the direction of the travel of the plates and the other a to-and-fro movement in
the direction of the axes of rotation of the cylinders in such a manner that the
upper cylinders move to the right hand when the lower cylinders move to the
left hand and vice versa, substantially as hereinbefore described.
2. In machines for scouring and wiping tinned sheet iron and other metals, the
use of blowers for the purpose of cooling the plates and at the same time
powdering them with dust the dust being supplied to the current of air in such
a manner that it becomes mixed therewith substantially as herein before described.
3. The improved apparatus for scouring and wiping tinned sheet iron and other
metals hereinbefore described and illustrated in the accompanying drawings.
Dated the 24th day of February 1891.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant..