Improvements in Glue and like Pots.
Year: 1893

page_text: Date of Application, 12th July, 1893-Accepted, 24th Feb., 1894
COMPLETE SPECIFICATION.
Improvements in Glue and like Pots.
I, JAMES YATE JOHNSON, of 115 St. Vincent Street, Glasgow in the County
of Lanark North Britain, Chartered Patent Agent (a communication to me from
abroad by Friman Kahrs, of 53 Butler Street, Brooklyn, State of New York United
States of America, Merchant), 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 :-
The objects of my invention are first; the providing of means whereby the glue
or other material or substance to be reduced or operated upon is automatically
weighed as it is introduced into the dissolving vessel or chamber; second; the
application of the hydrostatic principle whereby the amount of water to be
employed in the dissolving process is accurately measured out and determined,
such an amount depending upon the weight of glue introduced; third; the measure-
ment of the prepared glue by means of a proper scale as hereinafter described;
fourth; the testing of the consistency or thickness of the flow of the dissolved glue;
fifth; the providing of a special brush chamber or holder novel in construction;
and sixth; the particular construction and arrangement of covers or lids.
The invention also consists in other novel details of improvements and the
combinations of parts that will be more fully hereinafter set forth and pointed out
in the claims.
Referring to the accompanying drawings, which form a part of this
Specification-
Figure 1 is a side elevation of the glue pot complete.
Figure 2 is a vertical cross section thereof.
Figure 3 is a top view.
Figure 4 is a vertical cross section showing the inner pot in position in the outer
pot.
Figure 4 is a detail view.
Figure 5 is a horizontal section of the parts shown in Figure 4 on the line 5-5
of said figure.
Figure 6 is a side view of the inner pot and Figure 7 is a vertical cross section
of a modification.
Figure 8 is a vertical section of a modified form of inner pot.
Figure 9 is a top view of same.
Figure 10 is a detail view of the glue pot lid.
The letter A in the drawings indicates a suitable pot or receptacle adapted to
contain water and to permit the latter to be heated, a is a cock or the like at the
lower portion of pot A, through which hot water can be drawn to be applied to the
glue in the inner pot B, and whereby also it can be determined whether sufficient
water is in pot A or not. At the upper part of pot A, is an outlet b preferably
provided with a tube d, having a screw cap e to close it. The inner wall of pot A
is provided with vertical radial webs or partitions f, as shown in Figures 2, 4 and 5
between which the pot B fits, and by which it is guided and kept from tipping.
The pot B is considerably smaller than pot A, and is so made that it can float within
the latter when water is placed in the pot A. The inner pot B is to receive the
glue to be heated and prepared for use. The pot B is provided with a scale or
graduation D arranged to indicate the weight of the glue placed in the pot B, by
observing its height in the pot. A scale or graduation D2 on the inner upper part
pot
B will indicate the quantity of liquid or prepared glue that is produced from.
a given quantity of glue placed in the pot B. Openings N Figure 8. are provided.
for the admission of steam escaping from the surface of the water in pot A into the
of

page_text: glue pot B thereby supplying a constant film preventer in the glue pot. In other
words, as the steam passes from one chamber to the other through the openings
aforesaid, the partial condensation of the steam which is generated in the outer pot
and which flows through said opening into the inner pot will prevent a phlegm being
formed on the glue in the inner pot.
The outer pot A is preferably provided with a chamber E having an opening g
leading into pot A to admit water and steam from the latter to the former, the
chamber E being for the purpose of standing the glue brush in to keep it in good
condition, (see Figure 2). The chamber E is shown provided with a cock h the
opening through which acts as a gage to determine the thickness of prepared glue
passing through it, by observing the speed of flow or timing the passage of a certain
fixed quantity. For example, suppose the opening in cock is of such a bore that
water at 180° Fahrenheit will run through it at the rate of one hundred and fifty
cubic centimeters in fifteen seconds. Then by comparing the flow of the heated
glue with the above example the user of the glue pot can determine or calculate
the density of the heated glue so as to have same uniform, or in other words the
cock is made of a certain diameter to grade the thickness of the liquid by timing
the flow of a certain quantity. Thus he can readily determine how much to thin the
glue by adding water, or to thicken it by evaporation. A valve 2 in chamber E
permits emptying and cleaning of said chamber, and to replace water from chamber E
into pot B.
F is the cover for the glue pot. It is provided with an overlapping rim j whereby
air can be greatly excluded and steam retained in the pot over the glue, to prevent
the formation of a skin on the glue. Steam will also pass through opening 'g into
chamber E to keep the glue from holding the cover fast on the pot. The cover F
is made in two parts so that it can open sidewise in two directions and each part
has an aperture 12 to receive a studs on pot A. The parts of cover F, have
correspondingly inclined faces which act when a slight pressure is applied
causing or assisting the cover to close and retaining them in a closed position..
✓✓ are recesses in the divided edge of cover F to receive the brush F³, see
Figure 2. The cover Falso covers the chamber E.
S is a removable scraper placed in pot B and consisting of crossed wires or bars
entering inwardly extending apertured lugs 1, carried by pot B upon which
scraper the brush may be rubbed. The construction is shown in detail Figure 4ª.
His a ring connecting the upper parts of the webs or partitions f, and serves
as a guide by which to read the graduations or scale D on pot B, while at the
same time it steadies the pot B when floating. Said ring H is shown provided
with arms m, adapted to be engaged by projections non pot B, whereby said pot
can be held down when so light as to be forced up by the water in pot A. The
projections n also serve as handles in lifting pot B.
For the purpose of indicating when pot A is level, a bead or line o Figure 2, is
located on the inner side of said pot so that where the water and bead are
aligned it will be known that the pot is level.
The operation of preparing glue for use with my improved device is as follows:-
The screw cap e is first removed and then the pot A is filled to the height of the
aperture. Pot A is placed in a suitable vessel or receptacle to catch the overflow
of water from aperture 6. The inner pot B is then placed in pot A, which forces
a certain amount of water out of aperture 6 which is caught in the vessel A³
beneath. Glue is then placed in pot B to cause it to sink, a sufficient amount of
glue being inserted to force pot B down until the upper mark on its outer side
registers with the ring H. The pot B will then contain the proper amount of glue.
for a pound pot; exactly one pound. If less glue should be put in pot B it will;
be indicated on the scale. As the glue forces down the pot B more water will
escape through aperture b and be caught in the vessel beneath. The water in said.
vessel will be a proper amount to be added to the glue in pot B to which it is then
added, and the screw cap then replaced over aperture b. The outer pot A is then.
fully filled-with water-which may be heated by means of a stove or fire so as to

page_text: prepare the glue, the cover F being placed upon said pots. When the glue is
ready for use the scale on inside of pot B will show exactly how much liquid glue
is obtained for a certain weight of glue placed in pot B whereby as glue is bought
by the pound and used by measure the exact cost can be ascertained. The
testing of the prepared glue can readily be effected by means of chamber E as
before specified.
By my improved device I am enabled to conveniently and properly prepare the
glue to bring it to the desired consistency and also test and measure and thus at
the same time determine its cost and value.
It will be understood that the quantity of glue placed in pot B will regulate the
amount of water to be added to the glue, the parts being properly proportioned to
determine this effect.
It is evident that the device may be used for preparing other substances than
glue, and when I use the word glue, I intend it to cover other material to be treated
by the addition of a suitable amount of water, &c.
In the modification shown in Figure 7, the lower part of pot or receptacle A is
larger than the upper part, and, a tube d is extended vertically to or above the top
of pot A and the tube d is provided with marks showing the gradual rise of the
water caused by the addition of weight or material inside of the floating inner pot.
When placing the water in the pot A in this form of the device the points W will
indicate the proper height for the water before introducing the pot B.
In Figures 8, 9 and 10 I show a glue pot B with a modified form of cover.
The cover in this case is divided into two sections F and F'. At W I show a
bridge plate to which both of these sections are hinged. The bridge plate W has
two lugs u, one upon each side which fit under ears upon the upper edge of the
glue pot and which serve to retain the cover or lid in position. A handle for the
pot. is shown at L. The cover F is provided with a small hook o which is shown in
Figure 8. It will be seen by the dotted lines in this Figure that this hook can be
made to interlock with. the handle thereby retaining the cover F in an elevated
position. It will also be seen that by a slight side or twisting movement the cover
can be easily removed from the pot; by this means the glue in the glue pot can be
weighed without weighing the cover. A stop P is provided for the cover F to rest
against. At K I show a scraper, at Y also I show a circular scraper arranged
upon the inner surface of the pot B. This scraper extends around the entire
inner circumference of the said pot. When the scraper Y is employed, the
scraper K may be omitted.
When I use the word pot in this Specification, I wish it understood that I mean
any suitable receptacle.
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 :-
1st. The combination of a pot or receptacle A to contain water and having an
aperture b below its top, with an immersible pot to fit inside pot A and arranged
to displace a certain quantity of water by its own gravity, and a further amount
upon receiving glue or substance to be treated, substantially as described.
2nd. The combination of a pot or receptacle A having an aperture 6 below its
top, and a cover for said aperture to permit water to rise above it, with an
immersible pot arranged to displace a certain quantity of water by its own gravity,
and more water as glue or substance to be treated, is placed in it, as and for the
purposes specified.
3rd. The combination of a pot A having webs or guides f, with an immersible.
pot B adapted to float in pot A and to displace a certain amount of water,
substantially as described.
4th. The combination of a pot A having webs or guides of and an opening b, a
ring H carried by them, with an immersible pot B, arranged as and for the purposes
specified

page_text: 5th. The combination of pot A having webs or guides f, and an opening b, and
ring H having arms m, with an immersible pot B having projections n to engage
said arms as and for the purposes specified.
6th. The combination of pot A having aperture 6 with an immersible floatable
pot B having a scale on its inner wall to indicate the quantity of prepared glue,
substantially as described.
7th. The combination of pot A, chamber E and an opening 9 in the wall
between them with an immersible pot B, as and for the purposes specified.
8th. The combination of pot A, chamber E an opening in the wall between
them and a valve for said opening with an immersible pot B, substantially as
described.
9th. The combination of pot A, chamber E an opening h² in the wall between
them and a stop cock on said chamber for testing the consistency of prepared glue
in chamber E with an immersible pot B located in chamber A substantially as
described.
10th. The combination of pot A having upper opening b and lower stop cock a,
with an immersible pot B substantially as described.
11th. The combination of pot A with a cover divided longitudinally and having
inclined faces to accelerate its closing, substantially as described.
12th. The combination of pot A having an opening 6 and immersible pot B, with
a cover having overlapping part to cover both pots and tightly close them.
13th. The combination of pot A and chamber E with an immersible pot B, and
a centrally divided cover having overlapping parts and covering chamber E.
14th. In a glue pot or other similar device, a water containing vessel, with a
second vessel, insertible in the larger vessel, the said larger vessel serving as a
means, substantially as shown and described, for weighing the material to be
dissolved or reduced.
15th. In a glue pot or other similar device, a water containing vessel, with a
second vessel, insertible in the larger vessel, the said larger vessel having méans for
hydrostatically determining the weight of the glue or other material introduced into
the inner vessel, substantially as shown and described.
16th. The combination with a glue pot, of means substantially as shown and
described for testing the thickness of the dissolved glue.
17th. In a glue pot or other similar device, the combination of the inner and
outer vessels the latter adapted to contain liquid to sustain the inner vessel
substantially as described, the inner one acting as the receptacle of the material
to be prepared and an indicator whereby the loading of the inner vessel is readable
as to weight through the application of the hydrostatic principles as set forth.
18th. The combination of a pot or receptacle, an immersible pot therein, a
chamber E thereon, and an opening in the wall between said chamber and pot, with
a cover on said pot and chamber forming a steam way over the immersible pot,
substantially as described.
19th. The combination of a steam leading connection either through a hole, pipe,
or openings N, from the outer pot to the inner pot and a cover over the inner pot:
in order to keep the surface of the heated liquid glue covered with steam and to
cause a partial condensation of steam generated in the outer pot, in the inner pot
thereby preventing formation of skin on the surface and too rapid thickening of
. the glue through the checking of evaporation in the inner pot.
20th. The combination of glue pot and cover substantially as shown and described
with reference to Figures 8, and 10 of the drawings.
21st. The combination of the pot A with the glue pot B, the said glue pot having
a scraper Y as and for the purpose set forth.
1000
JOHNSONS,
115, St. Vincent Street, Glasgow, Applicant's Agents.