Improvements in and relating to Urns for Milk and other Liquids.
Year: 1899

page_text: Date of Application, 9th Nov., 1899-Accepted, 13th Jan., 1900
COMPLETE SPECIFICATION.
Improvements in and relating to Urns for Milk and other Liquids.
I, NELSON MUSLAR, of 13, Wall Street, Worcester, in the County of Worcester
and State of Massachusetts, United States of America, Mechanic, 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:
My invention relates to improvements on milk urns, and the object is to
produce an apparatus for holding milk and cream and to deliver therefrom
inilk of uniform quality. At present, so far as known to applicant, in the
urns in use the cream rises to the top so that in drawing off, skim milk is first
supplied instead of a mixture of milk and cream, and no cream is drawn until
the supply of skim-milk is exhausted, and further, in the present urns, the
milk and cream being on the outside of the ice chamber are liable to sour, as
they are thus exposed to heat. By my arrangement the above objections are
avoided, inasmuch as the cream and milk are agitated and mixed before being
delivered, and no liquid can be drawn from the apparatus without previous
agitation and mixture, the mixing of the cream and milk always taking place
before the drawing off.
Further, by my construction, the milk being surrounded by ice, no matter
what the weather may be the ice must first melt and the ice-water become warm
before the milk can sour. The ice is protected by a surrounding chamber which
may be filled with a heat non-conducting material to protect the ice against
heat.
My invention consists of certain novel features hereinafter described and
particularly pointed out in the claims.
In the accompanying drawings which illustrate a construction embodying my
invention
:
Figure 1 is a central sectional view through my improved milk urn.
Figure 2 is a plan view taken on the line 2-2 Figure 1.
Figure 3 is a cross sectional view through the apparatus on the line 3-3,
Figure 1.
Figure 4 is an enlarged detail sectional view showing the valve raised to allow
the withdrawal of liquid.
Like letters of reference refer to like parts throughout the several views.
The milk urn A is provided with a hollow base B, upon the upper side of
which rests the outer cylinder C the lower edges of which are soldered to the
top of the base B. Within the cylinder C is located another cylinder D, tho
lower edges of which are soldered to the base B. The chamber E formed by
these two cylinders is preferably filled with heat non-conducting material E,
as ground cork, to protect the ice I within the cylinder D, and resting on top
of the cylinder C is a cover F. Within the cylinder D, is located another
cylinder G, the lower edges of which rest on the top of the base B, and located
upon the upper edges of said cylinder G is a cover J. Located in the cover J

page_text: is a sleeve K, and projecting upwardly into said sleeve K is a sleeve L provided
at its lower end with a cross piece L' to which are secured the agitatore M.
The sleeve L is held fast in the sleeve K by means of the set screw L. The
shaft N extends from the upper edge of the sleeve L through the cross-piece L',
through the cross-piece N, then through the stufling box N and terminates in
the Hange bottom N. The upper end of the shaft N is provided with a spiral
thread with which engages the finger N³ on the arm having a suitable
handle and held in its normal position, as shown, by the spring 0 with
the finger N in the top of the spiral groove N' and pivoted on the sleeve K
at the point 02. The sleeve K and the sleeve L move with the arm 0, as
they are connected to move as one. The horizontal extension K of the sleeve K
is recessed to support the lower end of the spring 0, and during the movement
of the arm O said extension slides along the rib K¹ formed in the bottom of the
cover J.
The shaft N is held in its normal position, as shown in Figure 1, by the
spring P which rests at its lower end against the flange base № and at its
upper end against the stuffing box N. Screw-threaded on the lower end of
the stuffing box N is a cylinder P which at its lower end carries the valve P³
which is held in its normal closed position down on its seat in the valve
casing by spring R, the lower end of which spring rests upon the top of
the valve 1 and the upper end rests against the bottom of the stuffing box P.
The bottoni H of the milk chamber is screw-threaded and meshes with the thread
on the valve casing Q. The packing H¹ is secured tightly in place between the
bottom H of the milk chamber and the top of the base 13, and the packing H³
is secured in place between the base B and the valve casing Q, and by means
of these two packings no liability of leakage of the liquid is incurred. The
valve casing is provided with an upwardly extending cylinder which is
screw-threaded on the outside of the stuffing box P, and said cylinder is pro-
vided with the ports through which the mixture of cream and milk passes
from the milk chamber G to the discharge pipe S which is connected to the
valve casing Q.
A suitable nozzle T is provided for drawing off the ice water from the ice
chamber, the ice water serving two purposes, that of cooling the milk, and
it may also be drawn off to drink.
The operation of the apparatus is as follows: With the apparatus in its
normal position, shown in Figure 1, when no liquid is being drawn off and
it is desired to draw liquid, the operator takes hold of the handle O' of the arm (
and turns it to the right, which turns the agitatora M and mixes the liquid,
producing a uniform quality throughout. After the handle ()¹ turns three
complete revolutions, the finger N³ has moved around the spiral groove N and
has lifted the shaft against the tension of the spring P and fully compressed
suid spring, Figure 4, and as the fourth complete revolution of the arm Û takes
place, the valve P³ is raised against the tension of the spring R as the spring P
being fully compressed, the upward movement of the shaft acts on the stulling
box N and raises the valve P³ and the liquid passes through the ports li
into the bottom of the valve casing Q and out through the discharge pipe S, of
which there may be any number leading from the valve casing Q. When the
required amount of liquid has been drawn, the arm is pressed down against
the spring which pulls the finger №ō out of the spiral groove N and releases
the shaft N, which allows the springs R and P to act, which causes the valve Pl
to close on its seat in the valve casing Q, followed by the downward movement of
the flange bottom N³, when the apparatus is in its normal position, no liquid
being drawn off.
It is obvious that this apparatus might be used for chocolate, medicine, or
any liquid requiring stirring before serving. The stirring arrangement and
the valve connection may be attached to any liquid apparatus, so that the contents
when delivered is uniform in quality.

page_text: If it be desired, with the parts in normal position as shown in Fig. 1, to
agitate the liquid without drawing off, the handle of the arm is moved
toward the left, and the finger N will pass out of the spiral groove N without
affecting the shaft N, but the sleeve K, sleeve L and agitators M will be turned
by the movement of the arm 0, thus preserving the uniform quality of the
liquid.
I do not limit myself to the arrangement and construction shown, as the same
may be varied 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
1 claim is
1. In an apparatus of the character specified, a chamber for holding liquid,
an outlet for said liquid, a valve normally closing said outlet, means for agitating
the liquid in said chamber, means for opening said valve to allow the discharge
of liquid through said outlet, and means for holding said valve closed until the
liquid has been agitated.
1
2. In an apparatus of the character specified, a chamber for holding liquid,
an outlet for said liquid, means for agitating the liquid in said liquid chamber,
means for opening said valve to allow the discharge of liquid through said
outlet and yielding means for holding said valve closed until the liquid has
been agitated.
3. In an apparatus of the character specified, a chamber for holding liquid,
an outlet for said liquid a valve normally closing said outlet, an agitator for
the liquid in said chamber, means for opening said valve, mechanism for
operating said agitator to agitate the liquid and for subsequently opening the
valve to allow the discharge of liquid through said outlet, and means for holding
said valve closed until the liquid has been agitated.
4. In an apparatus of the character specified, a chamber for holding liquid,
an outlet for said liquid, a valve normally closing said outlet, an agitator for
the liquid in said liquid chamber, means for opening said valve, and an operating
device common to said agitator and said valve opening means, for agitating the
liquid and for subsequently opening the valve to allow the discharge of liquid
through said outlet.
5. In an apparatus of the character specified, a chamber for holding liquid,
an outlet for said liquid, a valve normally closing said outlet, an agilator for
the liquid in said liquid chamber, means for opening said valve, an operating
device common to said agitator and said valve opening means, for agitating the
liquid and for subsequently opening the valve to allow the discharge of liquid
through said outlet, and means for holding said valve closed until the liquid
has been agitated.
6. In an apparatus of the character specified, a chamber for holding liquid,
an outlet for said liquid, a valve normally closing said outlet, an agitator for
the liquid in said liquid chamber, means for opening said valve, an operating
device common to said agitator and said valve opening means, for agitating the
liquid and for subsequently opening the valve to allow the discharge of liquid
through said outlet, and means for closing said valve upon the removal of said
common device from engagement with said valve opening means.
7. In an apparatus of the character specified, a chamber for holding liquid,
an outlet for said liquid, a valve normally closing said outlet, an agitator for
the liquid in said liquid chamber, means for opening said valve, an operating
device common to said agitator and said valve opening means, for agitating
the liquid and for subsequently opening the valve to allow the discharge of liquid
through said outlet, means for closing said valve upon the removal of said
common device from engagement with said valve opening means, and a spring
for holding said common device normally in engagement with said valve oponing
incans.

page_text: 8. In an apparatus of the character specified, a chamber for holding liquid,
an outlet for said liquid, a valve normally closing said outlet, an agitator for
the liquid in said liquid chamber, means for opening said valve, an operating
device common to said agitator and valve opening means, for agitating the
liquid and for subsequently opening the valve to allow the discharge of liquid
through said outlet, and yielding means compressed by the opening of said
valve, for closing said valve upon the removal of said commion device from engage-
ment with said valve opening means.
9. In an apparatus of the character specified, a chamber for holding liquid,
an outlet for said liquid, a valve normally closing said outlet, yielding means
for holding said valve normally closed, a cooling chamber surrounding said
liquid chamber, an agitator for the liquid in said liquid chamber, a rod yield-
ingly connected to said valve and provided on its upper end with a spiral groove,
an arm operatively connected to said agitator and having a finger which engages
said spiral groove in the valve rod, and a spring normally holding said finger in
said spiral groove, the said arm being adapted in its movement to operate said
agitator to agitate the liquid and to subsequently open said valve by moving the
valve rod upwardly against said yielding means which closes said valve upon the
removal of said arm from engagement with said spiral groove in said valve
rod.
!
10. In an apparatus of the character specified, a chambor for holding liquid,
an outlet for said liquid, an agitator for the liquid in the liquid chamber, a
valve normally closing said outlet, a cooling chamber surrounding said liquid
chamber, an exterior chamber surrounding said cooling chamber, a velve-con-
trolled outlet for the water from said cooling chamber, mechanism for operating
said agitator to agitate the liquid and for subsequently opening the valve to
allow the discharge of liquid from said outlet, and means for holding said valve
closed until the liquid has been agitated.
Dated this Ninth day of November 1800
JENSEN & SON,
77, Chancery Lane, London, W.C., Patent Agents.