graphic Emulsion and for similar Purposes.
Year: 1886

page_text: Date of Application, 9th Apr., 1886.
Complete Left, 8th Jan., 1887.
Complete Accepted, 5th Apr., 1887.
graphic Emulsion and for similar Purposes.
I ELI JOHN PALMER of Toronto, Canada, at present residing at 24 Bedford Place
in the county of Middlesex, Manufacturer of photographic material do hereby declare
the nature of this invention to be as follows:-
These improvements relate more particularly to a machine for which Letters
Patent No. 3185 dated 11th March 1885 were granted to Alfred Julius Boult, as a
communication from me and consist of the following:-Providing a means for more
effectually regulating the flow of the liquid from the distributor. Furnishing the
endless band for conveying the plates to the rack with pitch chains; an automatic
arrangement for placing the plates in the rack and a means for disengaging the rack
whereby it descends when filled. In the instrument for distributing by hand a means
for regulating the flow of emulsion and providing same with guides whereby it is kept
at right angles to the plate.
:-
As when the emulsion chamber is full the pressure upon the outlet at the bottom is
greater than when the chamber is only partially full it is important to provide some
means for regulating the flow of the emulsion so that it may be equal no matter at
what level the emulsion may stand in the chamber. This I accomplish as follows:-
The emulsion chamber is surrounded by another chamber containing hot water.
The emulsion chamber is provided with a float to which is connected a cord passing
over a pulley and attached to a vertical arun pivotted at its lower end. A chain or
equivalent is attached to the lower end of the vertical pivoted arm and at the bottom
of the jacketted vessel to the outer end of a pivoted horizontal arm extending inwardly.
The inner end of this horizontal arm presses against the elastic tube or outlet of the
emulsion chamber by means of a spring on its outer end.
A tap is preferably provided in connection with the outlet for the purpose of
completely cutting off the flow of emulsion.
As the float drops down with the emulsion as its level is lowered the vertical
movable arm is pushed slightly forward, thereby carrying the chain together with
the horizontal arin with it, thus releasing the elastic tube or outlet and allowing an

page_text: increased flow of the emulsion. As the surface of the emulsion descends the float
likewise descends and consequently drags with it the cord passing over the pulley
and so operates the vertical pivoted arm; thus the lower the float descends the wider
becomes the outlet.
For securing an even and more regular distribution of the emulsion over the face
of the plate I provide the narrow vessel which acts as the distributor with a movable
gate or slide which is adjustable and can be set to regulate the flow of fluid in the
desired quantity.
The endless band for conveying the plates after receiving their coating of emulsion
to the rack is furnished with pitch chains which engage with pins or teeth in the
peripherics of the drums thus avoiding the necessity of keeping the bands in a state
of tension to ensure frictional contact and the relative positions are also maintained
for hand coating may be substituted by a slab.
The arrangement for automatically placing the plates in the rack are as follows
Instead of using a movable table for conveying the plates from the belt to the rack
I substitute a slide formed as an inclined plane having friction rollers over which the
plates pass by gravitation into the rack. This rack is placed in an inclined position in
suitable guides and has a series of teeth which engage with corresponding teeth in a
wheel mounted on an axle running in bearings in the frame. The automatic action
for moving the rack is caused by studs attached to the side of the drum which engage
with one end of a rocking lever pivoted to the frame the opposite end of this lever
acts upon a pawl and permits a wheel on the same axle as the one which actuates the
rack to move one tooth at each operation. When the rack is filled with plates it
becomes disengaged from the wheel above mentioned and slides down an inclined
plane to a lower portion of the machine from whence it can be removed by hand.
upon
In the instrument for distributing the emulsion by hand I provide an arrangement
for lifting the tube which is supported at each end on short levers fulcrummed
the tray, this causes the tube to move parallel with the holder and when it is raised
the slot in its under side is opened which permits of the flow of emulsion to the
required extent. This instrument is also provided with means for keeping the
distributor at right angles with its guides and consequently square with the plates
over which the distribution is taking place.
It must be understood that the precise method described in my specification.may be
modified without departing from the spirit of my said invention.
Dated this 9th day of April 1886

page_text: Improvements in Machines or Apparatus for Applying Photo-
graphic Emulsion and for similar Purposes.
I ELI JOHN PALMER of Toronto, Ontario, Canada, at present residing 24 Bedford
Place W.C. in the county of Middlesex, Manufacturer of Photographic material, 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:
These improvements relate more particularly to a machine for which Letters
Patent No. 3185 dated 11th March 1885 were granted to Alfred Julius Boult, as a
communication from me and consists of the following: Providing a means for more
effectually regulating the flow of the liquid from the distributer. Furnishing the
endless band for conveying the plates to the rack with pitch chains; an automatic
arrangement for placing the plates in the rack and a means for disengaging the rack
whereby it descends when filled. In the instrument for distributing by hand. a means
for regulating the flow of emulsion and providing same with guides whereby it is kept
at right angles to the plate.
DESCRIPTION OF DRAWINGS.
Fig. 1 is a sectional elevation of the emulsion chamber, and
lower part of same, taken at line x. c. A is the float connected
attached to the upper end of the vertical arm C-pivoted at C.
the vertical arm C is connected a chain D which actuates the
opposite end of same being in contact with the elastic tube F.
the arm E forward to its normal position as the float A rises
emulsion chamber.
Fig. 2 a plan of the
to a cord B, which is
To the lower end of
horizontal arm E, the
The spring G presses
upon the filling of the
Fig. 3, and 3 are enlarged end views of my improved endless band A with
connecting links B¹ which engage with pins or recesses formed in the peripheries of
the actuating drum B Fig. 4.
Fig. 4 is a side elevation and Fig. 5 a plan of my improved arrangement for
automatically placing plates which have received a coating of photographic emulsion
in suitable racks. A is a plate passing over rollers B mounted in the frame C. D is a
rack which is free to move up or down on the inclined plane E and is held in position
by a series of teeth which engage with the wheel F mounted upon the same axle as
the ratchet wheel G. Attached to the side of drum B are studs H which engage with
the rocking lever I which in turn acts upon the pawl K.
Fig. 6 sheet 3 is an end elevation of my improved instrument for distributing the
emulsion by hand. A is the reservoir supported on short levers B mounted in
bearings Cattached to the apron D.
Fig. 7 shows in plan my improved means for keeping the distributer at right angles

page_text: with the guid; the distributer is attached to the rod E which is kept in position by
the stay, these are attached to guides H which slide along the rod G, placed paralell
with the plate.
Figs. 8, 9 & 10 sheet 3. show in end elevation plan and front elevation respectively,
my improved automatic distributer; A is the movable gate or slide which is adjusted
to open to the required extent by nut B. C is a rod attached to a fixed part of the
frame of machine, and D. is the second rod with arm E which engages with the lover F
attached to the gate A. G is an elastic spring which keeps the apron H in contact
with the glass plate, and I is a projecting piece which engages with bridge to lift the
apron at suitable intervals.
As when the emulsion chamber is full, the pressure upon the outlet at the bottom
is greater than when the chamber is only partially full, it is therefore important to
provide some means for regulating the flow of emulsion so that it may be equal no
matter at what level the emulsion may stand in the chamber. This I accomplish as
follows: The emulsion chamber is provided with a float to which I connect a cord
passing over a pully and attached to a vertical arm pivoted at its lower end. A chain
or its equivalent is attached to the lower end of the vertical pivoted arm and at the
bottom of the jacketted vessel to the outer end of a pivoted horizontal arm extending
inwardly.
The inner end of the horizontal arm presses against the elastic tube or outlet of the
emulsion chamber by means of a spring on its outer end.
As the float descends with the emulsion the vertical arm is pushed slightly forward,
thereby conveying the chain together with the horizontal arm with it; thus releasing
the elastic tube or outlet and allowing an increased flow of the emulsion. As the
surface of the emulsion descends and consequently drags with it the cord passing over
the pully and so operates the vertical pivoted arm; thus the lower the float descends
the wider becomes the outlet.
In lieu of the above described means for regulating the flow of the emulsion from
the chamber, I substitute a stop-cock which is attached to the outlet and is operated
by means of the horizontal arm above mentioned.
For securing an even and more regular distribution of the emulsion over the face
of the plates, I provide the distributing vessel with a movable gate or slide which is
adjustable and can be set to regulate the flow of emulsion as may be desired; This I
construct as follows: To the rod which carries the distributer and running parallel
with it I place a second rod with an arm which comes into contact with a short lever
attached to the gate. To the back of the distributer I attach a spring connected to
the second rod, this causes the apron of distributer to be kept in contact with the
glass plate whilst passing over it; The requisite rocking motion which is given to
the distributer by passing over bridges causes the short lever to engage with the arm
(which is adjustable to any desired degree) and so regulates the amount of flow of
emulsion from the distributer by lifting the gate to a greater or lesser extent.
The endless band, for conveying the plates to the rack, after receiving the coating of
emulsion, is furnished with pitch chains of the following character; short square links
are connected by flat plates with hooked ends and the feeth or pins on the peripheries
of the drum engage with the link between the hooks. In some cases it may be desirable
to substitute slabs for the bolt so that the plates will be operated upon in sections.
The arrangements for automatically placing the plates in the rack are as follows:-
Instead of using a movable table for conveying the plates from the belt to the rack,
I substitute a slide formed as an inclined plane having friction rollers over which the
plates pass by gravitation into the rack; This rack is placed in an inclined position in
suitable guides, and has a series of teeth which engage with corresponding teeth in a
wheel mounted on an axle running in bearings in the frame.
The automatic action for moving the rack is caused by studs attached to the side of
the drum which engage with one end of a rocking lever pivoted to the frame; The
opposite end of this lever acts upon a pawl and permits the wheel on the same axle as
the one which actuates the rack to move one tooth at each operation. When the rack

page_text: is filled with plates it becomes disengaged from the wheel above mentioned, and slides
down an inclined plane to a lower portion of the machine, from whence it can be
removed by hand.
As it may sometimes be desirable to clevate the rack 1 effect this by roversing the
action above described.
In the instrument for distributing the emulsion by hand as described in my previous
patent hereinbefore refered to, I provide an arrangement for lifting the tube which is
supported at each end on short levers fulcrumed upon the tray, or apron, this causes
the tube to move parallel with the apron and when it is raised the slot on its under
side is opened which permits of the flow of emulsion to the required extent; This
instrument is also provided with means for keeping the distributer at right angles
with its guide, and consequently square with the plates over which the distributer is
taking place.
It must be understood that the precise method described for carrying my invention
into effect may be modified without departing from the spirit of my invention.
Having now particularly described and ascertained the nature of my said invention,
and in what manner the same is to be performed, I declare that what I claim is :-
First. Providing the emulsion chamber with a float which actuates arms or levers
or their equivalents for automatically regulating the flow of the emulsion in any given
equal quantity substantially as and for the purpose herein described.
Second. Providing the distributer with an adjustable gate for regulating the flow
of the emulsion therefrom substantially as specified.
Third. In an apparatus for applying photographic emulsion to photographic plates,
the construction of pitch chains substantially as and for the purpose described.
Fourth. Providing a rack with automatic action for receiving the plates after they
have been coated with emulsion substantially as and for the purpose specified.
Fifth. Providing an arrangement in the hand distributer for permitting the flow of
emulsion to the required extent substantially as for the purpose herein described.
Dated this 8th day of January 1887.
ELI JOHN PALMER.