THE NEW STEAM STAMP MILL SYNDIC
Year: 1899

page_text: Comutata Cunnif
Date of Application, 9th Jan., 1899
1024
We, THE NEW STEAM STAMP MILL SYNDICATE, LIMITED, and CHARLES SPENCER
MADAN, Engineers, both of 34, Crowther Street, Salford, in the County of
Lancashire, do hereby declare the nature of this invention to be as follows:-
This invention relates to mortar boxes for stamp mills and has for its object
to provide means for preventing wear and tear of the stem of the stamp by
keeping same as far as possible clear of grit. This we effect by causing the
water service to enter the box through the clearance around the stem after
having been circulated under some pressure around same.
On the cover of the mortar box we provide an ordinary packed gland as a
guide for the stem, or we provide for same purpose a special arrangement con-
sisting of one or more two-part wood blocks formed to embrace the stem and
bolted together and to an upstanding bracket on the cover, and bedded thereupon
on a piece of thick felt or equivalent soft and yielding material. In the cover
of the box, below such stem guide, we form a chamber surrounding the stem
orifice, and such chamber is connected by a passage or pipe to the water admission
nozzle or orifice. The water after freely circulating in the chamber around the
stem escapes into the box through the clearance between the stem and the lower
side of the cover and thus prevents to a great extent abrasion and cutting of
the stem by the hard grit which is flying about within the box, and at the same
time forms an effective water service.
Dated this Ninth day of January 1899
improvements relating to mortar boxes for Stamp wins.
We, THE NEW STEAM STAMP MILL SYNDICATE, LIMITED, and CHARLES SPENCER
MADAN, Engineers, both of 34, Crowther Street, Salford, in the County of
Lancashire, 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:-
This invention relates to mortar boxes for stamp mills and has for its object
to provide means for preventing wear and tear of the stem of the stamp by
keeping same as far as possible clear of grit. This we effect by causing the
water service to enter the box through a clearance around the stem and in

page_text: conjunction with the arrangement we also employ means for preventing leakage
from the box.
We will describe our invention in reference to the accompanying drawing in
which Fig. 1 is a section through the upper part and cover of a box showing
our improvement, Fig. 2 is a similar view of an alternative arrangement, and
Fig. 3 is a plan of Fig. 2.
In all stamp boxes constructed in accordance with our present improvements
we provide on the cover C of the mortar box A either an ordinary packed gland G
as shown in Fig. 1 for preventing leakage and serving also as a guide for the
stem S; or we provide for the same purposes the special arrangement shown in
Figs. 2 and 3; this consists of one or more superposed two-part wooden
blocks B B formed to embrace the reciprocating stem S and bolted together by
bolts d d to an upstanding bracket D on the cover C. The blocks B 1¹ are
bedded on the cover upon a piece of thick felt F or equivalent soft and yielding
material; W W are washers for more strongly securing the bolts d d and adjust-
ing their tightness as required. In combination with such water-tight gland
or block arrangement we provide in the cover C of the box, below the stem-
guide referred to, a chamber E surrounding the stem orifice, and such chamber
is connected by a passage or pipe e to the water admission nozzle or orifice c'.
A portion of the ordinary water service is admitted to the mortar box A through
the orifice and the annular clearance space E between the stem and the lower
side of the cover. This continuous downward flow of water thoroughly washes
the stem and thereby prevents to a great extent abrasion and cutting of the stem
by the hard grit which is flying about within the box, and at the same time
forms an effective water service no leakage being permitted by reason of the
gland or wood block arrangement referred to.
Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed, we declare that what
we claim is:-
In a stamp-mill mortar-box the use of a packed gland or the special arrange-
ment of wooden blocks (described in reference to Figs. 2 and 3) surrounding
the reciprocating stamp-stem for the purpose of preventing leakage from the
box, in combination with a water chamber within the box-cover surrounding
said stem and admitting water to the box through the annular clearance space
around the stem for the purpose of cleansing and preventing abrasion of same,
the whole being arranged or adapted to operate substantially in the manner
herein described and illustrated in the drawing.
Dated this Fourth day of October 1899.