Improvements in and relating to Vessels for Infusing or Boiling Coffee, and other like purposes.
Year: 1890

page_text: Date of Application, 17th May, 1890
Complete Specification Left, 10th Feb., 1891-Accepted, 14th Mar., 1891
PROVISIONAL SPECIFICATION.
Improvements in and relating to Vessels for Infusing or Boiling
Coffee, and other like purposes.
I, PETER STEVENSON, of 9, Forrest Road, in the City and County of Edinburgh,
Philosophical Instrument Maker, do hereby declare the nature of my invention to
be as follows:-
This invention has reference to and comprises certain improvements connected
with that class of boilers or vessels used for boiling or infusing coffee, in which the
water is boiled generally in a glass globe, but it might be a metal globe, by spirit
lamps or gas burners below, and forced through a separate percolating and infusing
vessel, and then strained or put back into the boiling globe, preferably by a vacuum
being formed in that vessel when emptied.
The nature and novelty of this invention consist in mounting these boiling globes
to swivel in an improved manner as hereinafter described, specially suitable for large
sizes for easily decanting the coffee or liquor into the cups. The improvements con-
sist specially in mounting the globe by its neck in a socket formed in two halves
or segmental parts in a swivelling crosshead, preferably in the centre, the two parts
being hinged, dovetailed, or screwed together on either or both sides, so as to
embrace the neck of the vessel firmly by a vulcanized india-rubber ring or other
soft packing. When so secured in the centre, the two ends of the crosshead would
be made in the form of journals to swivel in circular or semicircular hollow
bearings in which they would be secured by screws or pins, in the upper part of
two standards or other equivalent frame projecting up from the basement supporting
the spirit lamp or gas burner below the globe, all so that the globe may be thus
swivelled or tilted on the crosshead between the standards over the light, as to
empty the coffee or contents out by the neck or mouth on one side of the frame or
standards into cups, or otherwise for service and use. By a further improvement
this tilting is also effected by a short oscillating hand lever mounted on one of the
arms of the crosshead, which when lifted up answers for tilting the globe, and when
folded down into a stop check in one of the standards over or at the side of one of
the swivelling bearers, secures the globe in its vertical boiling position for fitting
on the stopper and tube of the percolating or straining and infusing vessel. In
other respects these coffee globes or boilers may be fitted in any of the portable
ways heretofore used, the essential improvements consisting in this convenient mode,
and. means of gripping and oscillating them by their neck and which is susceptible
of considerable modification, such as by swivelling them by one long journal bearing
on the crosshead on one standard frame, although this would not be so secure and
steady as the crosshead form jointed on both sides of the globe. And in so fitting
the globes that they could be lifted portably out of their bearings by their cross-
head; as well as being secured in their bearings as described.
Dated the 16th May 1890.
W. R. M. THOMSON & Co.,
Agents.
COMPLETE SPECIFICATION.
Improvements in and relating to Vessels for Infusing or Boiling
Coffee, and other like purposes.
I, Peter SteveNSON, of 9, Forrest Road, in the City and County of Edinburgh
Philosophical Instrument Maker, do hereby declare the nature of my invention,
and in what manner the same is to be performed, to be particularly described and

page_text: ascertained in and by the following statement in writing, reference being had to the
accompanying sheet of drawings, and to the letters and figures marked thereon, that
is to say:
My invention has reference to and comprises certain improvements connected
with that class of boilers or vessels used for boiling or infusing coffee, in which the
water is boiled generally in a glass globe, but it might be a metal globe, by spirit
lamps or gas burners below, and forced through a separate percolating and infusing
vessel, and then strained or put back into the boiling globe, preferably by a vacuum
being formed in that vessel when emptied.
The nature and novelty of this invention consist in mounting these boiling
globes to swivel in an improved manner as hereinafter described, specially suitable
for large sizes for easily decanting the coffee or liquor into the cup.
And in order that my said invention, and the manner of performing or carrying
the same into effect or practice may be properly understood, I have hereunto
appended an explanatory sheet of drawings in which the same reference letters are
used to indicate corresponding parts in all the figures where shown.
Figure 1 is an elevation partly in section showing a vessel for straining or filtering
and infusing coffee and a globe or vessel for boiling or raising steam; carried on a
framing above a spirit lamp and capable of swivelling round to empty its contents
in accordance with and illustrative of one arrangement of my improvements as
hereinafter described.
Figure 2 is a plan view of the framing and improved swivelling and retaining
fittings corresponding to Figure 1, but with the filtering or infusing and boiling
vessels removed.
Figure 3 is a perspective elevation of the apparatus with the straining vessel
removed, and showing the boiling vessel as swivelled or tilted round by hand on
the improved fittings and pouring or emptying its contents into a cup.
Figure 4 is an elevation of the straining or infusing vessel as removed from the
boiling vessel and inverted and placed over a dish, and
Figure 5 is a detached plan view of the improved swivelling fittings shown in
Figures 1 and 2.
'
Referring to these drawings:-The improvements consist specially in mounting
the steam boiling vessel or globe A by its neck A' in a ring collar or socket B¹
formed in two halves or segmental parts in a swivelling crosshead B, shown
detached in Figure 5, preferably in the centre, the two parts being hinged, dove-
tailed, or screwed together at B2 on either or both sides, so as to embrace the
neck A' of the vessel A. firmly by an asbestos or vulcanized india-rubber ring or
other soft packing at B". When so secured in the centre, the two ends of the
crosshead B are made in the form of journals or trunnions to swivel in circular or
semicircular hollow bearings at C', in which they are secured by screws or pins b,
the points of which work in grooves 61, formed in the journals B in the upper part C
of two standards C or other equivalent frame projecting up from the basement D to
support, or be made hollow to form the spirit lamp D¹ below the globe A, all so
that the globe A may be thus swivelled or tilted on or with the crosshead B, B¹,
between the standards C, C', over the light D', as to empty the coffee or contents
out by the neck or mouth A' on one side of the frame or standards into cups, or
otherwise for service and use, as shown in this tilted position in Figure 3. By a
further improvement this tilting is also effected by a short oscillating hand lever E
mounted to swivel on snugs E on one of the arms of the crosshead B, B', which
hand lever when lifted up answers for tilting the globe A, as dotted in in Figure 1,
and when folded down also forms a catch by taking into a stop check C³ formed
on the top C¹ of one of the standards C over or at the side of one of the swivelling
bearings C¹ and secures the globe A in its vertical boiling position over the lamp D
for fitting on the stopper a' and tube a² of the percolating or straining and infusing
vessel a, which is removed from the boiler A, when the coffee has been infused in
it, and passed down through the filter a" into the globe A. The filter a" is secured
in the lower part of the vessel a by a screw rod and nut a³, portably so as to be

page_text: removed for washing. The action of the apparatus is as follows:-The spirit
lamp D' having brought the required quantity of water to the boil in the boiler A,
the upper infusing and straining vessel a is inserted into the neck of the boiler
(with the coffee in it.) The water is forced up the tube by the pressure of steam
through the strainer and mixes with the coffee in the vessel a through which steam
passes; the light is then extinguished by closing down the cap and a vacuum is
formed by the steam condensing in the vessel A, when the pressure of the air forces
the infused coffee through the strainer a" down into the vessel A, and the vessel a
is then removed and inverted over a dish, as shown in Figure 4, and the coffee in
the boiler A is ready for decanting, as shown in Figure 3. In other respects these
coffee globes or boilers may be fitted in any of the portable ways heretofore used
the essential improvements consisting in this convenient mode and means of gripping
and oscillating them by their neck, and which is susceptible of considerable modifi-
cation, such as by swivelling them by one long journal bearing on the crosshead
on one standard frame C, although this would not be so secure and steady as the
crosshead form jointed and swivelling on both sides of the globe A. And in so
fitting the globes A that they could be lifted portably out of their bearing C¹ by.
their crossheads B, as well as being secured in their bearing as described.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
First. The fitting and use of coffee boilers or vessels with swivelling, operating,
and retaining fittings and lever, substantially as herein described in reference to and
shown in the accompanying drawings.
Second. In coffee boilers, the fitting and use of a swivelling or oscillating cross-
head or equivalent tilter, to carry and decant a globe or vessel, substantially as and
for the purposes herein described in reference to and by way of application shown
in the accompanying drawings.
Third. In coffee boilers, the fitting and use of an oscillating lever for tilting the
globe or vessel to its decanting position and retaining it in its vertical position,
substantially as herein described in reference to and shown in the accompanying
drawings.
Dated the 30th January 1891
W. R. M. THOMSON & Co.,
96, Buchanan Street, Glasgow, Agents.