IMPROVEMENTS IN APPARATUS FOR SUPPLYING LUBRICANT PROVISIONAL SPECIFICATION SUPPLYINGANT APPLICABLE TO SOME OTHER USES
Year: 1883

page_text: LETTERS PATENT to Samuel Kershaw of the City of Manchester in the
County of Lancaster and John Bromilow of Heywood in the same County,
LETTERS PATENT to Samuel Kershaw of the City of Manchester in the
County of Lancaster and John Bromilow of Heywood in the same County,
for an Invention of "IMPROVEMENTS IN APPARATUS FOR SUPPLYING LUBRICANT
PROVISIONAL SPECIFICATION left by the said Samuel Kershaw and John
Bromilow at the Office of the Commissioners of Patents on the 28th February
1883.
SAMUEL KERSHAW of the City of Manchester in the County of Lancaster and
JOHN BROMILOw of Heywood in the same County, "IMPROVEMENTS IN APPARATUS
FOR SUPPLYING LUBRICANT APPLICABLE TO SOME OTHER USES
"
Our Invention relates principally to apparatus designed to supply oil or melted
fat or lubricant to the cylinders or other parts of steam engines or to the bearings
and parts of engines or machines but our apparatus is also applicable to be used in
the supply of liquid or matter for other purposes. In our apparatus a revolving
plug receives the lubricant or matter from a reservoir and delivers it into a passage
leading to the steam engine cylinder or the valve chest or the bearing or otherwise
to the point of delivery. Within the said plug a piston or ram is fitted to slide to
and fro and is so actuated as that when a cavity in the plug is in communication
with the said reservoir the said ram is moved to draw matter into the cavity and
when the latter is in communication with the delivery passage the ram is moved
to eject the matter. We may vary the arrangements for rotating the plug and for
moving the ram. In one arrangement the outer end of the ram is provided with a
cross head to which is jointed two slotted links which engage with pins on two
bevel wheels which gear with a third bevel wheel which is secured on a projection
from the plug. The latter bevel wheel receives motion from a ratchet wheel and
lever or is otherwise actuated by any suitable means. As the plug rotates the ram
is moved to an fro. We may dispense with one bevel wheel and link. We prefer
in some cases to apply a back-pressure ball in the delivery passage the said ball
closing the passage against pressure the intention being to prevent steam from
having access to the said plug.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Samuel Kershaw and John Bromilow in the Great Seal Patent
Office on the 22nd August 1883.
SAMUEL KERSHAW of the City of Manchester in the County of Lancaster and
JOHN BROMILOW of Heywood in the same County 'IMPROVEMENTS IN APPARATUS
<<
FOR SUPPLYING LUBRICANT APPLICABLE TO SOME OTHER USES
"
Our Invention relates principally to apparatus designed to supply oil or melted
fat or lubricant to the cylinders or other parts of steam engines or to the bearings
and parts of engines and machines but our apparatus is also applicable to be used
in the supply of liquid or matter for other purposes. In our apparatus a revolving
plug receives the lubricant or matter from a reservoir and delivers it into a passage
leading to the steam engine cylinder or the valve chest or the bearing or otherwise
to the point of delivery. Within the said plug a piston or ram is fitted to slide to
and fro and is so actuated as that when a cavity in the plug is in communication
with the said reservoir the said ram is moved to draw matter into the cavity and
when the latter is in communication with the delivery passage the ram is moved
to eject the matter.
In order that our Invention may be fully understood we will when describing
the same refer to a sheet of drawings which we have attached hereto and which
are marked with letters of reference. In the said drawings Figs. 1 and 2 are
outside views of the improved lubricator taken at right-angles the one to the other
and Fig. 3 is a sectional view taken on the same plane as Fig. 1. In the said Figs
a is the lubricant reservoir or oil cup which may be made of any suitable form and
dimensions and b is the revolving plug. The said plug is made of a conical form
and is grooved or finished to accurately fit a seating prepared for it in the pillar c
which carries the reservoir. In the said plug is formed a central cavity into which
opens a port or passage d which is drilled or formed in the side of the plug. When
the plug is in the position as represented in Fig. 3 the said port establishes a
.communication between the cavity in the plug and a passage e which leads to the
reservoir and when the said plug is turned half round the said port establishes &
communication with a passage f which conveys the lubricant to the cylinder or
bearing. The said cavity is bored to receive a ram or plunger g which slides in
the said cavity and in a gland or stuffing-box 6' with which the plug is provided.
The plug is formed with a projecting shank upon which is fixed a mitre wheel h
which gears with two mitre wheels i, i which are mounted upon studs which are
fixed on opposite sides of the pillar c. A spiral spring k tends to press the mitre
wheel outward and thereby draws the plug into its seating. Upon the shank
of the plug is fixed a ratchet wheel and upon the said shank is mounted a lever m
which can be caused to engage with the teeth of the said ratchet-wheel as repre-
sented in Fig 2. In the example the end of the said lever is forked and the ends
of the fork are mounted to turn upon the boss of the wheel hand upon a nut
which screws. upon the outer end of the said shank and secures the parts in
position. Holes are formed in the said lever for the attachment of a link, cord or
chain or a suitable appliance whereby the said lever can be connected to a moving
part of the engine or machine so as to receive a continuous or intermittent to and
fro movement. In some cases the said lever may be raised by means of a wiper
upon a shaft or be otherwise suitably actuated or the lever ratchet and pawl may
be dispensed with and a worm and wheel substituted so as to give a slow
continuous movement to the plug. In any case the plug receives a rotatory
movement, intermittent or otherwise whereby the port d is alternately brought
into communication with the passage e and the passage fand the two wheels i are
also rotated in opposite directions. In each of the two mitre wheels i, i is fixed a
crank-pin and each crank-pin engages with a slot in one end of a connecting
link o which is jointed at its other end to the end of a cross-head which is
secured upon the outer end of the ram g. The wheels are so geared together as

page_text: the ram.
that the two crank-pins shall be in line when they arrive at the horizontal line
through the centres of the wheels-that is to say when at their dead centres-s0
that the pins shall act simultaneously and in concert upon the connecting links
and through them upon the cross-head so as to draw inwards and thrust outwards
the ram.
The cross-head p slides upon fixed studs, or other arrangements are
adopted to prevent the cross-head from moving otherwise than in the direction of
The connecting links are slotted in order that the ram may remain
stationary during intervals after completing its stroke in each direction. During
these intervals of dwell the port d is being moved through the intervals between
the passages e and f. In the example the pillar c is formed in two parts and in
the lower part a ball valve r is seated at an elbow formed in the passage. The
said valve opens to permit the downward flow of lubricant but closes to prevent
the upward flow of steam the intention being to prevent the steam from having
access to the plug. We consider this valve to be a valuable addition to the
instrument when intended for the supply of lubricant to the cylinders of steam
engines or for similar uses but when intended only for supplying lubricant to the
bearings of machinery the said valve would not be required. The ball is introduced
through an opening which is closed by means of a screw plug 8. The action of
the apparatus is as follows:-In Figs 1 and 3 the parts are in the positions
assumed when the ram has been thrust outward to the extent of its movement the
crank pins being on their dead centres. During this outward movement the port d
has been open to the passage e and lubricant has been drawn into the cavity in
the plug. The ram remains stationary whilst the wheels i, i make a little over a
quarter of a revolution the crank-pins moving in the slots in the links and during
this interval the port d bas been moved around into communication with the
passage f. On the crank-pins arriving at the outer ends of the slots they
commence to draw inward the plug whereby lubricant equal to the quantity
withdrawn from the reservoir is ejected into the passage f. It will be seen that a
portion of lubricant will be injected at each revolution of the plug and that the
quantity injected in a given time can be regulated by varying the stroke of the
lever m or by otherwise varying the speed of rotation of the plug.
Having now fully set forth and indicated the nature of our said Invention and
the manner in which we carry the same into practical effect we would have it to
be understood that we claim :-
First. The combination of parts forming the complete apparatus substantially as
and for the purposes set forth and indicated hereinbefore and in and by the
accompanying drawings.
And secondly. The combination of the revolving plug fitted with a sliding ram
the slotted side links taking hold of the cross-head on the ram, the two mitre
wheels provided with crank-pins actuating the said links and gearing with the
third mitre wheel fixed on the shank of the plug with suitable parts for rotating
the said plug substantially as and for the purposes set forth and indicated.
In witness whereof I the said John Bromilow for myself and on behalf of the
said Samuel Kershaw have hereunto set my hand and seal this twentyfirst day
of August in the year of our Lord one thousand eight hundred and eighty-three
JOHN BROMILOW (LS)
Signed, sealed and delivered
in the presence of
EDWARD K. DUTTON
41 John Dalton St, Manchester.
(Agent for the Patentees)
JOHN BROMILOW (LS)