IMPROVED, PROCESS OF AND APPARATUS FOR MAKING INFUSIONS OF COFFEE AND OTHER BEVERAGES
Year: 1883

page_text: PROVISIONAL SPECIFICATION left by William Phillips Thompson at the
Office of the Commissioners of Patents on the 1st May 1883. A. communi-
cation to him from Joseph Cole Grant of New York city county and state,
United States of America
WILLIAM PHILLIPS THOMPSON of the firm of W. P. Thompson & Boult Agents
for Foreign Patent Solicitors 6 Lord Street Liverpool in the county of Lancaster
"IMPROVED, PROCESS OF AND APPARATUS FOR MAKING INFUSIONS OF COFFEE AND
OTHER BEVERAGES."-A communication to me from Joseph Cole Grant of New
York city, county, and state, United States of America.
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The object of this invention is to ensure a uniform quality in every cupful of
coffee or other beverage made; to prevent dissipation of the strength and aroma
of the beverage in making the same; to make the beverage instantaneously at the
moment it is required for use; and to economize the beverage yielding material.
The invention. consists in making infusions of coffee, tea, and other beverages, in
the act of drawing or delivering the same into the cup or other vessel in which the
beverage is served, by passing steam and hot water, or hot water alone, through a fresh
charge of the material for each cupful or other serving, measured to produce an
infusion of a certain required strength; the invention also consists in an apparatus for
making coffee and other beverages in the manner stated, composed of a hot water
vessel, a faucet connected therewith through which to draw the hot water, and an
infuser adapted to be attached to and detached from the faucet for the reception of
the ground coffee or other material into and through which the water passes from
the faucet, to saturate the material and produce an infusion of the same, which
passes from the infuser into a cup or other suitable vessel placed to receive it.
The urn or hot water vessel is provided at the top opening with a downwardly
projecting inwardly contracted flange. The cover has a flange projecting from its
base also contracted, so that when the cover is placed on the urn, the flange on the
cover fitting into the flange at the top opening, forms a steam-tight connection
therewith. At the apex of the cover is made a valve seat for a safety valve.
Inside the urn is a steam pipe leading from near the top downward, and into the
faucet or tap. This pipe conducts steam to the faucet separately from the water.
The infuser is composed of a cap piece attached to the mouth of the faucet, and a
[Price 2d1

page_text: cup or tray separate from the faucet, the two parts adapted to be easily and
quickly connected and disconnected by lugs in the cap and hooks on the cup or
tray. The cap piece is provided with a foraminated plate which forms a barrier
against the material placed in the infuser entering the mouth of the faucet. The
sides of the cap are slightly flared outward. The cup or tray has its bottom of a
conoidal form and provided with a central orifice for the exit of the infusion.
Inside the cup or tray is placed a fine sieve or strainer, and the sides of the said
cup or tray are contracted towards the top so as to fit in the cap and form a water-
tight joint therewith.
The cup or tray is provided with a handle, and to the cap is fastened a finger-
rest or bearing of wood, against which the finger bears when the cup is being
connected with or disconnected from the cap. The legs of the urn are inserted in a
base provided with sockets. In this base is placed an oil or spirit reservoir fitted
with a burner by which the water in the urn is heated..
The ground coffee or other material to be infused is placed in cup or tray, which
is then connected with its cap. The faucet valve is then opened and closed, so as
to allow sufficient water to enter the infuser and saturate the coffee.. After eight
or ten seconds the valve is again opened, so as to allow the water to pass slowly
through the coffee and infuse the same, the infusion flows out of the infuser, and is
delivered into a cup or other vessel placed under the infuser to receive it.