Improvements in Glands and Bushes for Engines and other Machinery.
Year: 1896

page_text: Date of Application, 22nd Apr., 1896
Complete Specification Left, 22nd Jan., 1897-Accepted, 27th Mar., 1897
Improvements in Glands and Bushes for Engines and other
Machinery.
We, JOSEPH APPLETON of 12, Salisbury Street and WILLIAM CUNDLIFFE of
47 New Cross Street both in St. Helene in the County of Lancaster, Engineers,
do hereby declare the nature of this invention to be as follows:-
This invention has for its object an arrangement of gland and bush which can
be very quickly taken off and re-applied, and one in which the possibility of the
bush being drawn out of the gland by friction or otherwise while working is
reduced to a minimum or zero. The invention is applicable also in cases where
there are bushes without glands or glands without bushes. We form both bush
and gland in two or more parts with longitudinal radial joints and connect them by
means of double dovetailed pieces. The glands are also connected by bolts which
are preferably turned and passed through holes or sockets accurately rimed out
and placed under and partly in the rim of the gland. In order to prevent the
bushes being forced out of the gland we turn both the inside of the gland and the
outside of the bush with one or more grooves and circular tongues or ridges,
the one fitting iuto the other. In thus describing our invention in the best form
at present known to us, it is obvious that the bolts conld be placed above instead of
below, that other forms of fastening could be adopted, that the ridge and groove
device could be dispensed with under some circumstances and also that the main
advantage of the double dovetailed piece is to prevent the percolation of steam or
water, and that therefore where a very accurate fit is not required other forms of
fastening could be used such even as forming the two halves with hollows and
projections fitting into each other.
Improvements in Glands
Machinery.
LUT
We, JOSEPH APPLETON of 12 Salisbury Street and WILLIAM CUNDLIFFE of
New Cross Street both iu St. Helens in the County of Laucaster, Engineers, 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 has for its object an arrangement of gland and bush or gland
or.bush which can be very quickly taken off and re-applied, and one in which the
possibility of the bush being drawn out of the gland by the friction of the rod or

page_text: otherwise while working is reduced to a minimum or zero. Wo form both bush
and gland in two or more parts with longitudinal joints and connect them by means
of double dovetail pieces. The glands are also connected by bolts which are
preferably turned and passed through holes or sockets accurately rimed out and
placed under and partly in the rim of the gland.
The invention is best described by aid of the accompanying drawings, in
which,
Fig. 1 shows a gland and two. bushes in section, though part of the bushes are
in elevation.
Fig. 2 shows an elevation of the gland.
Fig. 3 a plan of same, and
Fig. 4 an elevation of the lower bush.
In these, A is the rod, B the gland, C bolts uniting the glaud and the two halves
of the bush they passing through lugs D. E is a double dovetail piece uniting the
two halves of the gland. F the ordinary bolts for serowing down the gland.
G&H bushes. 1, dovetails into which the dovetail piece fits. K cylindrical
groove and tongue, the one formed in the gland and the other in the bush. These
are used to prevent the bush being forced out of the gland and are turned in their
respective pieces so as to fit each other.
The mode of action of using is as follows:-
If a fresh bush be required, the gland and bush can be taken off without moving
the crosshead, the nuts and bolts Faro simply unscrewed, the gland drawn up
beyond the bolts, the dovetail pieces taken out when the gland will at once
separate and tho two halves of the bush can be removed from it and a fresh bush
put in place. The gland and bush are then placed in position on the rod, the
dovetail pieces E inserted and the gland shoved down on to its holding bolts and
screwed up.
In thus describing our invention in the best form at present known
to us, it is obvious that the bolts C could be placed above the flange instead of
below and that other forms of fastening than bolts could be adopted, that the
ridge and groove device K could be dispensed with under some circumstances and
only a tight fit used or a screw plug or other locking device inserted between the
two. The main advantage too of the dovetail pieces is to prevent percolation of
steam and water, therefore where a vory accurate fit is not required other forms
of fastening altogether could be used, such for instance as forming the two sides
with hollow and projection respectively so as to fit each other. In speaking of the
double dovetail piece, we are well aware that similar mechanism has been used in
connecting other packings, such as piston rings glands and the like and we make
no claim for a double dovetail piece broadly but only when used with mechanism
substantially as described.
Having now particularly ascertained and described the nature of our inven-
tion, and in what manner the same is to be performed, wo declare that what we
claim is :-
1. The improvement in glands and bushes for engine and other like machinery
which consists in forming each of them in two parts, and in the case of glands
uniting them together by bolte, dovetail pieces or other mechanisto.
2. In glands and bushes substantially as described in Claim 1 the formation of a
groove in one and a corresponding ridge in the other, whereby the two are held
firmly together when in position and the glands cannot be forced out by friction.
3. In combination with glauds or bushes substantially as described in Claim 1,
the double dovetail piece substantially as described.
Dated the 20th day of January 1897
WM. P. THOMPSON & Co.,
Of Liverpool, Manchester, Biriningham, and London, Patent Agents.