Improvements in Machinery or Apparatus for Coating the Surface of Paper or other Flexible Material with Gum or other Adhesive Substances of the like kind, and for Sizing, Staining and the like, or Varnishing such Materiál.
Year: 1890

page_text: Date of Application, 1st May, 1890
Complete Specification Left, 2nd Feb., 1891-Accepted, 7th Mar., 1891
PROVISIONAL SPECIFICATION.
Improvements in Machinery or Apparatus for Coating the Surface
of Paper or other Flexible Material with Gum or other Adhesive
Substances of the like kind, and for Sizing, Staining and the like,
or Varnishing such Materiál.
I, WILLIAM BREWER SILVERLOCK, of 92, Blackfriars Road, in the County
of Surrey, Printer, do hereby declare the nature of this invention to be as
follows:-
My present invention has for its object improvements in machinery or apparatus
for coating with ordinary gum or other adhesive substance of the like kind, the surface
of paper, cardboard, or other flexible material, to be used for instance for adhesive
labels after the sheets so coated have been dried and cut up into pieces of the
required size.
In such process it is desirable that the sheets when so gummed should be taken
off from the machine automatically and without being touched by grippers or other
equivalent devices and that the coating should be uniform and even, without the
gum becoming frothy, and also that if necessary the process should be continuous,
and by my present invention these requirements are obtained, whilst the machine is
compact, simple, and inexpensive.
I take a suitable frame, preferably of metal, and in the upper part of this frame I
arrange a horizontal cylinder or drum revolving in suitable bearings, and driven
continuously in the same direction by steam or other convenient power.
At one or more parts of the circumference of this cylinder I make openings,
provided with gripping strips or bands and pins or studs constructed and actuated
in the manner described and shown in the Specification of Letters Patent granted
to me dated December 1st A.D. 1887, and numbered 16,533, by which the
sheet of paper or other flexible material to be treated is seized at the right moment
and carried round upon the surface of the cylinder, and after having been gummed
is released and raised from the surface of the cylinder and removed.
Below the cylinder I arrange a moveable vessel of suitable size and shape con-
taining the gum or other adhesive liquid which is to be applied to the sheet, and
I arrange this vessel so that it can be very readily fitted to its place and adjusted
to the exact position required, and removed when necessary or another vessel con-
taining a different liquid substituted for it. The vessel containing the gum may be
contained if required in an outer vessel which can be kept warm by steam, hot water,
gas, or other convenient means, and the liquid gum is kept at as nearly as possible
the same level.
In the vessel I arrange a cylinder, or roller covered with a soft material, or a
brush, which revolves in bearings in the ends of the vessel and is kept in slow
revolution by means of a chain and chain wheels, or toothed gear driven by
the axle of the principal cylinder above. The lower part of this roller dips into
the gum or liquid, and its upper part is adjusted so as to touch and coat the lower
surface of the flexible sheet which is carried round upon the cylinder. In advance
of the gumming roller I arrange a bar or pad, parallel with the roller which is
also covered with a soft material and which serves to equalize and render
uniform the coating of gum upon the sheet. This bar or pad may be sup-
ported in bearings or guides at its ends in which it may be made to oscillate
backward and forward endways in order to facilitate the equalization of the coating
of gum.
Such oscillation is effected by means of a cam, crank, or equivalent means
actuated from the main shaft of the machine.

page_text: In advance of the bar or pad is arranged a parallel roller or scraper which does
not revolve or move, but presses upon the coating of gum and further equalizes it.
After passing over the last described roller or scraper, the gummed sheet is carried
up and over the top of the revolving cylinder, and the gripping strip by which it is
held is there released, and its front edge is raised by the rising studs already referred
to, and it passes forward and downward upon an endless travelling band or table,
by which it is carried forward to any desired point, and from which it can be
removed as required.
Small wheels may be arranged to keep the edge of the sheet in contact with the
cylinder if required.
Instead of a revolving cylinder or roller as described for the purpose of supplying
the gum or other liquid to the surface of the sheet which is passing above it, two
rollers may be used, the lower one revolving in the gum in the vessel and the upper
parallel one being arranged above it, and close to the surface of the revolving
cylinder. An endless band of suitable soft and flexible material is passed over the
two rollers, and as they revolve very slowly it takes up gum from the vessel below
and transfers it to the surface of the sheet above.
The details of construction and arrangement may be varied more or less according
to the purpose to which the apparatus is to be applied and the conditions under
which it is to be used.
The improved apparatus is very compact, and effective, and the gummed sheets
are taken off without being touched by grippers or by the hands. The action is
continuous, and the work is better and more effectually done than has ordinarily
been the case. The gun or other liquid is free from froth, and can be used hot and
kept hot if required, and the rotation of the cylinder being constant in the same
direction continuous lengths of paper or other material can be treated.
The boxes or chambers and rollers being movable and adjustable different ones
can be used for gumming, sizing, staining, and the like, aud for varnishing.
EDWARDS & Co.;
35, Southampton Buildings, Chancery Lane, London,
Agents for the Applicant.
EDWARDS & Co.;
35, Southampton Buildings, Chancery Lane, London,
Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Machinery or Apparatus for Coating the Surface
of Paper or other Flexible Material with Gum or other Adhesive
Substances of the like kind, and for Sizing, Staining and the like,
or Varnishing such Material.
1, WILLIAM BREWER SILVERLOCK, of 92, Blackfriars Road, in the County of
Surrey, Printer, 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 and accompanying drawing, that is to say:—
My present invention has for its object more especially improvements in
machinery or apparatus for coating with ordinary gum or other adhesive substance
of the like kind, the surface of paper, cardboard, or other flexible material to be
used for instance for adhesive labels after the sheets so coated have been dried and
cut up into pieces of the required size.
In such process it is desirable that the sheets when so gummed should be taken
off from the machine automatically and without being touched by grippers or other
equivalent devices, and that the conting should be uniform and even without the
gum becoming frothy, and also that if necessary the process should be continuous,
and by my present invention these requirements are obtained, whilst the machine is
compact, simple, and inexpensive.
The accompanying drawing is in illustration of my invention,
Figure 1 being an end view of the improved gumming machine and Figure 2 a
similar view partly in section.

page_text: a is a suitable frame, preferably of metal, and in the upper part of this frame I
arrange a horizontal cylinder or drum revolving in suitable bearings, and driven
continuously in the same direction by steam or other convenient power.
At one or more parts of the circumference of the cylinder I make openings or
recesses c (two of which are shewn in the drawing) provided with gripping strips or
bands d and pins or studs e constructed and actuated in the manner described and
shewn in the Specification of Letters Patent granted to me dated December 1st
A.D. 1887, and numbered 16,533, by which the sheet of paper or other flexible
material to be treated is seized at the right moment and carried round upon the
surface of the cylinder ½, and after having been gummed is released and raised from
the surface of the cylinder and removed.
Below the cylinder 6 1 arrange a moveable vessel of suitable size and shape
containing the gum or other adhesive liquid which is to be applied to the sheet, and
I arrange this vessel so that it can be very readily fitted to its place and adjusted
to the exact position required, and held by a ping or other equivalent means, and
removed when necessary or another vessel containing a different liquid substituted
for it. The vesself containing the gum may be contained if required in an outer
vessel (not shewn in the drawing) which can be kept warm by steam, hot water,
gas, or other convenient means and the liquid gum is kept at as nearly as possible
the same level. In the vessel I arrange a cylinder or roller covered with a soft
material, or a brush, which revolves in bearings in the ends of the vessel and is
kept in slow revolution by means of a chain and chain wheel or toothed gear
driven by the axle of the principal cylinder or of the driving shaft b.
The lower part of this roller dips into the gum or liquid, and its upper part is
adjusted so as (either directly or with the intervention of a second roller ¹) to touch
and coat the lower surface of the flexible sheet of paper or other material which is
carried round upon the cylinder b. In advance of the gunming roller I arrange
a bar or pad k parallel with the roller which bar is also covered with a soft material
and which serves to equalize and render uniform the coating of gum upon the sheet.
This bar or pad k may be supported in bearings or guides at its ends in which it
may be made to oscillate backward and forward end ways in order to facilitate the
equalization of the coating of gum.
Such oscillation is effected by means of a crank, cam, or equivalent means (not
shewn in the drawing) actuated from the main shaft of the machine.
In advance of the bar or pad k is arranged a parallel roller or scraper / which
does not revolve or move, but presses upon the coating of gum and further equalizes
it. After passing over the last described roller or scraper the gummed sheet is
carried up and over the top of the revolving cylinder b, and the gripping strip by
which it is held is there released, and its front edge is raised by the rising studs e
already referred to, and it passes forward and downward upon an endless travelling
band or table, or tapes m driven by a crossed belt or chain m' from the shaft by
which it is carried forward to any desired point, and from which it can be removed
as required.
Small wheels may be arranged if desired, to keep the edge of the sheet in contact
with the cylinder.
The bearings of the roller which supplies the gum or other liquid to the surface
of the sheet may be made moveable vertically for a short distance, and pressed up
by springs, projecting cams being formed or attached to the edges of the cylinder
by which the roller is pressed down out of contact with the cylinder except when
the
paper or other flexible sheet is passing.
In this way the roller is prevented from touching the bare surface of the
cylinder b.
Instead of a revolving cylinder or roller or rollers and has described for the
purpose of supplying the gum or other liquid to the surface of the sheet which is
passing above it, two rollers may be used, the lower one revolving in the gum in the
vessel and the upper parallel one being arranged above it, and close to the surface
of the revolving cylinder. An endless band of suitable material passes over the two

page_text: rollers, and as they revolve very slowly it takes up gum from the vessel below and
transfers it to the surface of the sheet above.
n represents the feeding table when supplying a sheet to the cylinder b, and n' its
position when the sheet is placed upon it against the gauge a² its movement being
effected by levers and cams a, a, s', s being a cam upon the cylinder shaft, by which
the levers and table are moved at the right times. Cams for opening and closing
the grippers are shown in dotted lines at o, o', actuating the toothed levers o', which
gears with toothed wheels upon the axle of the grippers d and o² is a cam acting
upon the levers o³ for raising the studs to deliver the sheet.
Fast and loose pulleys are arranged upon the driving shaft M.
The details of construction and arrangement may be varied more or less according
to the purpose to which the apparatus is to be applied and the conditions under
which it is to be used. Instead of gum, size, varnish, staining or other liquid, may
be used a separate vessel / being used for each such liquid, and the vessels being
readily and quickly removeable and interchangeable as required,
The improved apparatus is very compact, and effective, and the gummed sheets
are taken off without being touched by grippers or by the hands. The action is
continuous, and the work is better and more effectually done than has ordinarily
been the ease. The gun or other liquid is free from froth, and can be used hot and
kept hot if required, and the rotation of the cylinder being constant in the same
direction continuous lengths of paper or other material can be treated.
The boxes or chambers and rollers being moveable and adjustable different ones
can be used for gumming, sizing, staining, and the like, and for varnishing.
Having now particularly described and ascertained the nature of my said
invention, and the manner in which the same is to be performed, I declare that
what I claim is :-
1. In a machine for coating the surface of paper or other flexible material with
gun or other adhesive substances of the like kind, and for sizing, staining, and the
like, or varnishing such material, the combination of the drum & moveable vessel,
rollers, arranged and operating substantially as and for the purpose described
and shewn.
2. In a machine for coating the surface of paper or other flexible material with
gum or other adhesive substances of the like kind. and for sizing, staining and the
like, or varnishing such material, the combination of the drum b, moveable vessel,
rollers bar and roller or scraper 1, arranged and operating substantially as
and for the the purpose described and shewn.
3. In combination with the drum by moveable vessel, rollers h h', bar k, and
roller or scraper 4, the opening or openings e, c. grippers d, moveable studs and
cams o, o¹, o³, substantially as and for the purposes described and shown.
P
4. The combination with the drum and moveable vessel, of the grippers d,
moveable studs e, cams o, o', o, and travelling table or tapes m, by which the coated
sheets are automatically delivered from the machine without being touched by hand,
substantially as described and shown.
5. The combination with the drum and moveable vessel of the moveable
bearings for the roller by which the gun or other liquid is applied, the springs for
supporting such bearings and the camis upon the edges of the drum b, substantially
as and for the purposes described.
T147 11901
EDWARDS & Co.,
35, Southampton Buildings, London, Agents for the Applicant.