Improvements in or connected with "Cream Raisers."
Year: 1891

page_text: Date of Application, 12th Mar., 1891
Complete Specification Left, 12th Dec., 1891-Accepted, 16th Jan., 1892
PROVISIONAL SPECIFICATION.
Improvements in or connected with "Cream Raisers."
I, FRANCIS RICHMOND, of Green Bank, Colne, in the County of Lancaster,
Agricultural and Dairy Engineer, do hereby declare the nature of this invention
to be as follows:-
:-
My improvements relate to "cream raisers" of that kind in which there is an
inner and an outer shallow pan or dish (hereinafter termed the "pan") a cavity
between the two pans being filled with water for cooling purposes. According to
this invention I make the inner or upper pan (which holds the milk) of enamelled
sheet iron thereby providing a more suitable surface for contact with milk than
tinned iron or steel heretofore commonly employed. The upper edges of the two
pans have heretofore usually been united (to make the cavity between the two pans
watertight) by means of soldering. I make the enamelled inner pan and the outer
pan at their upper edges with outwardly projecting horizontal flanges between
which is interposed a lining of material suitable for producing a watertight joint
and the two flanges are fastened tightly together by means of bolts and nuts
(preferably made of brass). In addition to the inside or recessed part of the
inner pan the upper side of its surrounding flange is to be enamelled. To prevent
the cracking of the enamel under the pressure of the bolt heads I preferably
interpose between the bolt heads and the enamelled side of the flange any con-
venient soft material impervious to the chemical action of milk or cream.
Through a recessed part in the middle of the inner pan and through a hole in
the middle of the lower or outer pan I fit an outlet plug for the reception of a
stand pipe or "cream separator" of the kind described in the Specification of my
Letters Patent No. 11,210 of 1888. The said plug has its flange let into a circular
recess in the bottom of the inner pan and its tubular stem below the flange is
screw-threaded and provided with a nut suitable packings or washers being employed
so that when the nut is screwed up tightly against the underside of the inner pan
a watertight joint may result. The tubular stem is continued downwardly through
the central hole in the lower or outer pan and may be soldered or otherwise secured
thereto in such manner as to prevent the escape of the water in the cavity through
the space left between the tubular stem and its hole.
Dated this 12th day of March 1891.
W. LLOYD WISE,
Per F. J. Brougham,
46, Lincoln's Inn Fields, London, W.C., Agent for the Applicant.
COMPLETE SPECIFICATION.
Improvements in or connected with "Cream Raisers."
I, FRANCIS RICHMOND, of Green Bank, Colne, in the County of Lancaster,
Agricultural and Dairy Engineer 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 "cream raisers" of that kind in which there is an inner
and an outer shallow pan or dish (hereinafter termed the "pan") a cavity between
the two pans being filled with water for cooling purposes. According to this
invention I make the inner or upper pan (which holds the milk) of enamelled sheet
iron thereby providing a more suitable surface for contact with milk than tinned

page_text: iron or steel heretofore commonly employed. The upper edges of the two pans
have heretofore been united (to make the cavity between the two pans watertight)
by means of soldering. I make the enamelled inner or upper pan and the outer or
lower pan at their upper edges respectively with outwardly projecting horizontal
flanges between which is interposed a lining of material suitable for producing a
watertight joint and the two flanges are fastened tightly together by means of bolts
and nuts (preferably made of brass). In addition to the inside or recessed part
of the upper pan the upper side of its surrounding flange is also enamelled. To
prevent the cracking of the enamel under the pressure of the bolt heads any con-
venient soft material impervious to the chemical action of milk or cream, (such for
instance as good thick linen tape) may be employed in the form of washers
between the underside of the bolt heads and the upper enamelled face of the
flange.
Through a recessed part in the middle or if preferred at one end of the upper
pan and through a hole in the lower pan I fit an outlet plug for the reception of a
stand pipe or 66 cream separator " of the kind described in the Specification of my
Letters Patent No. 11,210 of 1888. The said plug has its flange let into a circular
recess in the bottom of the upper pan and its tubular stem below the flange is
screw threaded and provided with a nut suitable packings or washers being
employed so that when the nut is screwed up tightly against the underside of the
upper pan a water tight joint may result. The tubular stem is continued down-
wardly through the hole (hereinabove referred to) in the lower pan and may be
soldered or otherwise secured thereto in such manner as to prevent the escape of
the water in the cavity through the space left between the tubular stem and its
hole.
In the accompanying drawings,
Fig. 1 is a plan view and
Fig. 2 a cross section of a cream raiser of double pan form having my said
improvements applied thereto.
Fig. 3 is a plan view and
Fig 4 a cross section of the outer or lower pan detached from the inner or
upper pan.
a is the inner or upper pan b the outer or lower pan and c the cavity for the passage
of cold water between the said pans. I preferably enamel the upper pan a on both
sides for the purpose as herein before stated of providing (as regards the upper
side) a more suitable surface for contact with milk and also for enabling the pan to
be the more readily cleaned and as regards the lower side for the protection of the
metal against corrosion. d is the flange on the upper pan and d' the flange on the
lower pan.
e represents packing (which may be of any convenient kind) interposed
between the said flanges and ƒƒ bolts and nuts for screwing the said flanges tightly
together. These bolts and nuts may be of brass or if preferred of hard white
metal. g is the outlet plug ha screw nut and i a washer employed for fastening
the said plug to the upper pan a and j represents the joint fastening the stem k
of the plug g to the lower pan b.
upper
At Figs. 3 and 4, 11 are mid-feathers in the lower pan b upon whose
edges and sloping sides the lower side of the upper pan a rests when in working
position three chambers being thus formed underneath the said pan a. m is an inlet
pipe for the entry of cold water and n an outlet pipe. Holes oo are made through
alternate ends of the midfeathers 11 and as indicated by the arrows at Fig. 3 the
incoming water is caused to circulate or flow in a zig zag manner during its passage
under the pan a from the inlet m to the outlet n.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
In cream raisers of the kind or class hereinabove described the use or employ
ment of an upper pan of enamelled sheet metal and a lower pan the two pans being

page_text: jointed so as to form a watertight cavity between them by means of projecting
flanges screwed together substantially as hereinbefore described and shewn in the
drawings.
Dated this 12th day of December 1801
W. LLOYD WISE,
Per F. J. Brougham,
46, Lincoln's Inn Fields, London, W.C., Agent for the Applicant.