IMPROVEMENTS IN SIGHT DROP LUBRICATORS
Year: 1886

page_text: Date of Application, 11th Mar., 1886.
Complete Left, 11th Dec., 1886.
Complete Accepted, 11th Jan., 1887.
ROOKES EVELYN BELL CROMPTON of Mansion House Buildings Queen Victoria
Street in the City of London Engineer and WILLIAM AUGUST KYLE. of Arc Works
Chelmsford in the County of Essex Engineer do hereby declare the nature of our
invention for IMPROVEMENTS IN SIGHT DROP LUBRICATORS to be as follows:-
This invention relates to Sight Drop Lubricators for purposes of Lubricating
shafting and other revolving and moving parts which require à Lubricant.
We construct the Lubricator of two or more parts consisting of a glass globe which
is the receptacle of the Lubricant having a neck of the required length through which
the oil must pass, the glass being transparent so that any fluid or Lubricant passing
down the neck of the said globe is visible to the eye. This neck is also provided with
a metal casting which fits into the required position where the lubrication is to be
applied.
At the upper part of this casting is a conical hole into which fits a conical pin or
valve which is held on the top of the globe by another casting and which is arranged
in such a manner that the valve can be raised or lowered for the sake of admitting
more or less lubrication. This adjustment is only possible for a certain distance so
that the oil inay fall in drops at certain intervals of time as may be required or it may
run in a fine continuous stream if required. The lower casting has on the bottom a
recess which is provided with a leather or india rubber washer and at the upper part
a groove round which is slipped an india rubber ring.
The upper casting is also provided at its inside with a leather washer.
A screwed tube connects the lower and upper casting so that the washers being put
in their respective positions we screw the upper and lower castings close on to the top
and neck of the globe and thus make a joint and prevent the oil escaping.
.
This connecting tube is provided with holes so as to allow the oil to find its way
through the opening into the valve. The upper casting has further a semi-circular
opening for filling the lubricator and is covered by a brass washer or any other
material so that no dust can get into the lubrication.
At some distance from the valve upwards we fix a spring on to the stem of the
valve in connection with a screwed adjusting tube.

page_text: This spring is so attached that its tendency is to bring the valve on to its seat.
For the purpose of preventing this a lock or adjusting nut, which fits on to the
adjusting tube and by means of which as aforesaid the quantity of lubrication can be
adjusted, is set in such a position that it prevents the spring from bringing the valve
on to its seat.
The valve stem is provided with a head and a stop pin. This pin is of a definite
length and fits in a slot in the adjusting tube. When the lubricator is set for working,
this pin rests on the top of the adjusting tube and when it is desired that the
lubricating should be discontinued the head is turned round until the pin is opposite
the slot in the adjusting tube and the spring being in tension draws the pin down and
thus brings the valve on to its seat and prevents any further escape of the lubricant.
Sometimes we make this adjustment of a trigger form, a continuation of the
adjusting tube which may be in the shape of a round pin passes through the head of
the valve stem and is bent over at the top so as to stand slightly beyond the centre of
the valve.
In the centre of the head of the valve I attach a lever having a hole at one end
which fits on to the above said hook or trigger. We adjust the flow of the lubricant
as already above described, but if we want to stop the flow we withdraw the pivotted
hook from the trigger and the spring pulls the valve on to its seat. Sometimes we
fix on to the adjusting tube a screw formed ring which has small teeth filed on its
edge and the head of the valve stem is provided with a kind of pawl so that if the head
is turned round say to the right it raises the cone gradually and at a definite rate and
if a complete revolution has been made the head is pulled down again by the spring
and thus shuts off the flow of the lubricant.*
We sometimes use a tube of screw or spiral form having a smooth surface, and at
right angles to the valve stem we put a sinall pin which rests at the incline of the
spiral formed tube. To avoid side pressure we make this spiral form on both sides of
the tube for the cross pin to rest on.
..Some distance below this we fix in the adjusting tube a small screw which can grip
the valve stem. If we now turn the conical pin in the direction of the rise of, or up
the incline until we have the required flow then we grip the valve stem by means of
the small set screw.
WM. BROOKES & SUN,
55 & 56, Chancery Lane, London,
Agents for the said
R. E. B. Crompton and W. A. Kyle.

page_text: Improvements in Sight Drop Lubricators.
We ROOKES EVELYN BELL CROMPTON of Mansion House Buildings Queen Victoria
Street in the City of London, Engineer, and WILLIAM AUGUST KYLE of Arc Works
Chelmsford in the County of Essex, Engineer 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 sight feed lubricators for purposes of lubricating shafting
and other revolving or moving parts.
The object of our invention is to enable an attendant to regulate or adjust the flow
of lubricant accurately at a given rate and this may be set once for all, and to allow
the attendant to stop the lubrication altogether when desired for instance when the
shaft or other moving part is stopped, without necessarily altering or disarranging the
adjustment thus maintained ready for resetting the supply as before.
The lubricant is poured into a glass or glass and metal vessel with a small valve at
the bottom. This valve is opened enough to let the lubricant drip or pass through at
the desired rate and is so arranged that it can be shut entirely and opened again to
exactly the same amount as before.
Of the numerous ways of making an apparatus according to our invention we will
describe the one we now think best.
In the accompanying drawing a is a glass vessel with a neck below fitting over the
enlargement of the metal or other base plug or closing piece c. This base piece e is
packed to the glass a by the asbestos or elastic ring which prevents the lubricant
from running past. The base piece e is screwed to the tube i which is itself screwed
at j to the brass cap k. By screwing the cap on to the tube i the glass vessel a is
forced down on the leather or other suitable washer g, thus making the vessel liquid
tight.
The plug or base piece c encloses a small valve e. The closing pin of this valve e is
carried on the end of the rod d, so that when the rod d is lifted the lubricant flows
through the space that is left between the needle and its socket. A hole is cut in
the plug or base piece so that the rate of flow of the oil can be seen therethrough
whilst the flange of the glass vessel covering the opening prevents outflow of liquid."
Resting on the cap k is a metal tubular setting piece / formed at its upper edge as
an inclined plane at o. This piece can turn on the cap k when the set screw m is
loosened.
The rod d cannot turn relatively to the cap & as it is held by the pin n passing through
it working in a slot in the rod d; so that it can work up and down but cannot turn
round. There is a removeable pin p held by being passed through the rod d so that
when the setting piece is turned the pin slides up the inclined plane o. To regulate
the feed the setting piece is turned till the lubricant feeds at the rate of flow or
speed desired. The set screw m is then tightened. To stop the lubrication the pin >>
is withdrawn and the spiral spring presses the rod d down and closes the valve e.
To start again d is raised by hand and the pin inserted, when the oil flows again at
the same rate as before adjusted to.

page_text: 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
1. In a sight feed lubricator the combination or arrangement and use of parts
constituting a reservoir for lubricant having a valve capable of being set to deliver at
an adjustable rate the lubricant with means for cutting off that supply when required
and renewing that adjusted supply all substantially as set forth.
2. In a sight feed lubricator providing a sight aperture in the opaque plug or part
enclosing the valve and covered by the glass of the reservoir in order to afford means
of viewing the actual feed taking place as set forth.
WM. BROOKES & SON,
55 & 56, Chancery Lane, London,
Agents for the Applicants.