Improved Manufacture of Soap Tablets with Devices in Different Colored Soap thereon, and Apparatus for that purpose.
Year: 1890

page_text: Date of Application, 13th Aug., 1890
Complete Specification Left, 8th May, 1891-Accepted, 27th June, 1891
PROVISIONAL SPECIFICATION.
Improved Manufacture of Soap Tablets with Devices in Different
Colored Soap thereon, and Apparatus for that purpose.
We, FREDERICK WALLACE KITTO, of 90 Lordship Road, Middlesex,
Gentleman, CIARLES WILLIAM KITTO, Gentleman, of Blomfield House, New
Broad Street, in the City of London, and GEORGE HERSCHELL of 5 West
Street, Finsbury, in the City of London, Gentleman, do hereby declare the nature
of this invention to be as follows:-
Our invention relates to the manufacture of soap tablets or bars wherein
ornamental designs, names, &c. are produced in the tablet or bar by forming
perforations or holes through the body of the tablet or bar which holes are filled
with soap of a different colour.
According to our invention, instead of first forming holes through a tablet or
bar of soap and then filling the holes with the soap of a different colour, as has
heretofore been proposed, we produce the design, naine &c. in a different colour or
colours in the tablet or bar of soap at the same time that such tablet or bar is
produced.
We effect this by simultaneously forcing coloured soap through a hollow die or
series of hollow dies having an external and internal configuration corresponding
to that of the ornament to be produced, which die or dies is or are situated within
another die through which the soap for forming the body of the tablet or bar is
forced, so that as such soap is forced past the outer surfaces of the inner die or
dics it will have a hole or holes left in it corresponding to the configuration of such
dies, which hole or holes is or are at once filled by the soap issuing from the
interior of such inner die or dies.
The apparatus for carrying out the above described improved mode of manu-
facture may be variously constructed; in the arrangement which we prefer to
employ, a cylinder or box charged through a side opening with the soap material
for forming the body of the bar or tablet is made of tapering form at one end,
where it terminates in a die of the configuration required for the bar or tablet,
while at the other end it contains a piston which is forced forward by hydraulic
or other power so as to force the soap material through the die at the other end.
At the side of the said cylinder or box is a second one, also tapering at one end
to form a narrow passage, which passes through the side of the first cylinder or
box and extends to a more or less central position within the die of the latter, its
end being formed as a die having the outer and inner configuration of the
ornamental or other design &c. to be produced. The second cylinder being
charged, through a side opening, with soap of a different color from that of the
first one, and such soap being forced by a piston through the passage and central
dic while at the same time the soap material for forming the body is being forced
through the outer die, the hole or holes formed in such body material by the outer
surface of the inner die will be at once filled by the material of different colour
forced out of the latter. When the ornamental or other design requires to be
produced by two or more different coloured soaps, there are provided as many
cylinders with their passages, dies and pistons as there are different coloured
soaps.
When bar soap is produced in the above described manner, this may be cut
transversely into tablets, each of which will have the coloured design passing
through it.
Instead of forcing the soap materials through the dies by means of a piston as

page_text: described, a rotating screw blade fitting the interior of the cylinder may be used,
in which case, the material may be fed into the cylinder continuously through a
hopper.
D19h do of August 1900
ABEL & IMRAY,
Agents for the Applicants.
1
COMPLETE SPECIFICATION.
Improved Manufacture of Soap Tablets with Devices in Different
Colored Soap thereon, and Apparatus for that purpose.
We, FREDERICK WALLACE KITTO of 90 Lordship Road, Middlesex,
Gentleman, CHARLES WILLIAM KITTO, Gentleman, of Blomfield House, New
Broad Street, in the City of London, and GEORGE HERSCHELL of 5 West
Street, Finsbury, in the City of London, Gentleman do hereby declare the nature
of this invention and in what manner the same is to be performed to be
particularly described and ascertained in and by the following statement:-
Our invention relates to the manufacture of soap tablets or bars wherein
ornamental designs, names &c. are produced in the tablet or bar by forming
perforations or holes through the body of the tablet or bar which holes are filled
with soap of a different colour.
According to our invention, instead of first forming holes through a tablet or
bar of soap and then filling the holes with the soap of a different colour, as has
heretofore been proposed; we produce the design, name &c. in a different colour or
colours in the tablet or bar of soap at the same time that such tablet or bar is
produced.
We effect this by simultaneously forcing coloured soap through a hollow die or
series of hollow dies having an external and internal configuration corresponding
to that of the ornament to be produced, which die or dies is or are situated within
another die through which the soap for forming the body of the tablet or bar is
forced, so that as such soap is forced past the outer surfaces of the inner die or dies,
it will have a hole or holes left in it corresponding to the configuration of such
dies, which hole or holes is or are at once filled by the soap issuing from the
interior of such inner die or dies.
The apparatus for carrying out the above described improved mode of manu-
facture may be variously constructed.
In the arrangement which we prefer to employ, a cylinder or box charged
through an opening with the soap material for forming the body of the bar or
tablet is made of tapering form at one end, where it terminates in a die of the
configuration required for the bar or tablet, while at the other end it contains a
piston which is forced forward by hydraulic or other power so as to force the soap
material through the die at the other end.
At the side of the said cylinder or box is a second one, terminating at one end
in a passage, which passes through the side of the first cylinder or box and extends
to a more or less central position within the die of the latter, its end being formed
as a die having the outer and inner configuration of the ornamental or other
design &c. to be produced.
The second cylinder being charged, through an opening, with soap of a different
colour from that of the first one, and such soap being forced by a piston through
the passage and central die while at the same time the soap material for forming
the body is being forced through the outer die, the hole or holes formed in such
body material by the outer surface of the inner die will be at once filled by the
material of different colour forced out of the latter. When the ornamental or
other design requires to be produced by two or more different coloured soaps, there
are provided as many cylinders with their passages, dies and pistons as, there are
different coloured soaps.

page_text: Figure 1 is a side elevation,
Figure 2 a plan partly in section,
Figure 3 a cross section of the cylinder and
Figure 4 is a section to an enlarged scale of the dies through which the soap
issues.
:
A is a cylinder, mounted on trunnions B on a framing C, so that it can be
turned from the horizontal position shewn in full lines, which it assumes when in
operation into the vertical position shewn in dotted lines, into which it is brought
for receiving a charge of soap into its own rear end it is held in the correct
horizontal position by means of a catch X pivotted to the framing catching on to
a stop on the cylinder. The front end of the cylinder is made tapering as
shewn and terminates in a rectangular or other shaped die D through which the
soap is forced as will be presently explained. This die is of a size corresponding
to that of the bar or cake of soap to be produced and is by preference formed of
four separate plates, bolted together as indicated at Figure 4. Each plate has a
transverse channel d with which communicate a series of small longitudinal
grooves d' d', the channels d being made to communicate by a pipe with a vessel E
containing water, which can consequently be made to flow in small regulated
quantities through the channels and grooves. The inner surfaces of the plates are
covered by a suitable porous fabric F, secured by being held between the joints of
the plates, which fabric is consequently maintained in a saturated condition by the
water from the grooves, and thus affords a lubricated surface that prevents the
soap from sticking as it passes through the die.
At the side of the cylinder A is fixed or formed a second smaller cylinder G,
the rear open end of which is flush with that of the cylinder A, while the front end
terminates in a channel H that enters one side of the tapering end of A and
terminates in a series of hollow dies H' situated within the inner end of the
die D, and having any desired configuration, such as that shewn at Figure 4.
From the channel H. a branch H extends through the opposite side of the
cylinder A, being closed outside by a screw valve or otherwise, so as, when
necessary to allow a certain quantity of the soap forced through the channel H to
escape instead of passing through the dies H.
The
rear end of the framing C carries two spur wheels I, J, through the
threaded bosses of which pass screwed spindles K, L, carrying pistons M, N,
respectively adapted to fit the cylinders A and G.
The wheels 1, J gear with each other, and to the wheel I is fixed a worm
wheel T with which gears a worm U on a shaft V geared with the driving shaft V,
carrying a fast pulley Y and two loose pullies by means of which it can be
driven in either direction by an open and a crossed driving belt S S', it can also be
thrown out of gear, in a manner well understood. Thus on the shaft being
rotated in one direction, the rotation of the wheels J causes the spindles KL to
be screwed forwards so as to force the two pistons MN into and along their
respective cylinders, the spindles being connected together by a cross bar Wat
their outer ends, so as to prevent their rotation.
As the wheels 1J revolve in contrary directions, their screw spindles have
threads of opposite pitch as shewn.
Through a hole in the cross bar W passes a rod P having collars P' P2 at a
distance apart somewhat less than the stroke of the pistons; the inner end of this

page_text: rod is connected to the short arm of a bell crank lever the long arm of which has a
slotted connection with a sliding bar Q carried by the framing C and carrying the
striking forks R R₁ of the straps S S₁. Thus on the pistons M N approaching the
end of their instroke, the bar W in pressing against the collar P² of rod P causes
this to move bar Q so as to throw the strap that has been on the fast pulley Y on
to its loose pulley, and at the same time to bring the other strap on to the fast
pulley, thereby reversing the motion of the driving gear, and consequently
drawing the pistons back out of the cylinders again, after which both straps are
thrown on to the loose pullies so as to stop the machine and allow the cylinders to
be turned up on their trunnions to receive fresh charges of sonp.
Before introducing the soap into the cylinders, it requires to be well kneaded
through, in order to enable it to be squeezed through the dies without requiring
too much power. Or it may be introduced into the cylinders in a finely shredded
condition for this purpose.
The capacity of the small cylinder G being calculated for supplying the
greatest number of dies H' it follows that when a smaller number of dies is
employed, there will be a quantity of soap delivered from the small cylinder in
excess of what is required; such excess is allowed to pass off on opening the valve
on the branch H2 to a corresponding extent.
When it is required to supply the dies H¹ with soap of two or more different
colors, a corresponding number of small cylinders G with their pistons, screw
spindles and toothed gear have to be provided.
For the purpose of cleansing the cylinders and dies of any adhering soap when
they are empty and have to be charged with soap of a different color, the
pistons MN are provided with passages M' N' formed through them closed by
screw plugs, so that on inserting the pistons into the open ends of the cylinders, a
steam jet can be introduced into the cylinders for the above purpose.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, we declare that what we
claim is :-
1. The herein described improved manufacture of soap tablets with devices in
different coloured soap thereon, wherein the soap forming the body of the tablet is
forced through a die within which is a hollow inner die or dies through which the
soap of different colour is simultaneously forced, so that the hollows left in the
body of the tablet by the passage of the soap past the outer surface of the inner
dies are at once filled up by the colored soap issuing from such inner dies.
2. The construction of apparatus for manufacturing soap tablets or bars in the
manner set forth in the preceding claim, consisting of a receptacle for the soap
forming the body of the tablet, having a die of the required configuration for the
tablet, within which die are one or more inner dies communicating with one or
more other receptacles for the soap or soaps of different colors, the soaps
being made to issue from the receptacles through the respective dies by means of
pistons, screw blades or other suitable devices substantially as described.
3. In apparatus for manufacturing soap tablets or bars with letters or devices in
different colored soaps, the combination of a cylinder A with die D for the outer
configuration of the soap, bar or tablet, one or more other cylinders G communi-
cating with dies H' situated within the die D, and pistons MN actuated by
screwed spindles KL and driving gear I, J, T, U, V substantially as and for the
purpose herein described with reference to the accompanying drawings.
Datal thin 9+1 lor of May 1901
ABEL & IMRAY,
Agents for the Applicants.