Improved Means for Introducing the Water Service to Mortar Boxes of Stamp Mills.
Year: 1899

page_text: PROVISIONAL SPECIFICATION.
Improved Means for Introducing the Water Service to Mortar Boxes
of Stamp Mills.
We, THE NEW STEAM STAMP MILL SYNDICATE, LIMITED, and CHARLES SPENCER
MADAN, Engineers, both of 34, Crowther Street Salford, in the County of Lanca-
shire, do hereby declare the nature of this invention to be as follows:-
Our invention relates to certain improved means for introducing the water
service or supply to the mortar boxes of stamp mills and for washing the stamp
stem therein. Hitherto it has been proposed to effect this by supplying the water
to a chamber formed in the cover of the mortar box surrounding and open to the
reciprocating stamp stem, the water passing from said chamber into the mortar
box through the annular clearance space around the said stem. To this arrange-
ment certain objections arise and the aim of the invention is to avoid same, and
to provide means for more efficiently cleaning the stamp stem and so preventing
abrasion thereof while at work; according to our present improvement we form
a separate chamber within the metal of the cover or other suitable part of the
box, which chamber while surrounding the stem at some distance therefrom, has
no communication with same or with the clearance space between the cover and
the stem. To such chamber water is admitted by an inlet nozzle and passage,
and escapes therefrom by a number of suitable directed water jet orifices formed
through the inner metal wall of the chamber; through and by these orifices the
water is projected in a series of jets at suitable pressure in such manner as to
impinge directly at any convenient or suitable angle or angles upon the periphery
of the stamp stem inside the box, and thus we obtain a continuous delivery of
water directly upon and around the stem so that it is kept clear of grit and dirt.
The casting forming the cover or box is designed to allow of the formation of
the said water chamber and its inlet and delivery orifices with the greatest
economy of metal, and the angle of inclination (if any) of the jet orifices is such
as to obtain the maximum efficiency of action of the jets on the stem.
In combination with the above described arrangement for water supply to the
box, we employ a packed or otherwise watertight joint above the cover so that no
leakage from the box about the stem can occur.
Dated this Second day of October 1899.
J. U. CHAPMAN & CO.,
Agents.

page_text: Improved Mears for Introducing the Water Service to Mortar Boxes
of Stamp Mills.
We, THE NEW STEAM STAMP MILL SYNDICATE, LIMITED, and CHARLES SPENCER
MADAN, Engineers, both of 34, Crowther Street Salford, in the County of Lanca-
shire, 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:-
Our invention relates to certain improved means for introducing the water
service or supply to the mortar boxes of stamp mills and for washing the stamp
stem therein. Hitherto it has been proposed to effect this by supplying the water
to a chamber formed in the cover of the mortar box surrounding and open to
the reciprocating stamp stem, the water passing from said chamber into the
mortar box through the annular clearance space around the said stem. To this
arrangement certain objections arise and the aim of the present invention is to
avoid same, and to provide means for more efficiently cleaning the stamp stem
and so preventing abrasion thereof while at work.
In carrying out our invention we form within the metal cover of the mortar box
an independent annular chamber of suitable section and area surrounding but
having no communication with the stem or with the clearance space between the
cover and the stem. This chamber has a water inlet and a series of internally
disposed water-jet orifices through and by which the water is projected and caused
to impinge directly upon the periphery of the stem within the box.
We will fully describe our invention in reference to the annexed drawing in
which Fig. 1 represents in section the upper part of a mortar box and its cover
having our improvement embodied, and Fig. 2 is a plan of the gland nut.
C is the chamber cast in the cover A of the box B and to it water is admitted
by an inlet nozzle N and passage P and escapes therefrom by a number of suitably
directed water jet orifices 00 formed through the inner metal wall of the
chamber C: through and by these orifices 00 the water is projected in a
series of jets at suitable pressure in such manner as to impinge directly at any
convenient or suitable angle or angles upon the periphery of the stamp stem S
inside the box, and thus we obtain a continuous delivery of water directly upon
and around the stem so that it is kept clear of grit and dirt. The casting
forming the cover or box is designed to allow of the formation of the said water
chamber C and its inlet and delivery orifices with the greatest economy of metal,
and the angle of inclination (if any) of the jet orifices is such as to obtain the
maximum efficiency of action of the jets on the stem.
In combination with the above described arrangement for water supply to the
box, we employ a packed or otherwise water-tight joint above the cover such as is
shown so that no leakage from the box about the stem can occur.
Having now particularly described and ascertained the nature of our said
invention, and in what manner the same is to be performed, we declare that what
we claim is :-
-
In the mortar boxes of stamp mills forming an annular chamber within the
metal of the cover of the mortar box, surrounding but not in communication with
the stamp stem, and having a water inlet and a series of internally disposed and

page_text: suitably directed water-jet orifices through and by which the water is projected
and caused to impinge directly upon the periphery of the stem within the box,
substantially as and for the purpose above described and illustrated in the drawing.
Dated this 27th day of June 1900.
J. C. CHAPMAN & Co.,
Chartered Patent Agents 70 Chancery Lane, London, W.C.