Improvements in Drop-feed Lubricators and the like.
Year: 1892

page_text: Date of Application, 31st Mar., 1892
Complete Specification Left, 30th Dec., 1892-Accepted, 25th Mar., 1893
PROVISIONAL SPECIFICATION.
Improvements in Drop-feed Lubricators and the like.
We, CHARLES SCOTT SNELL of Culver Park, Saltash, Cornwall, Engineer,
and WOODHOUSE AND RAWSON UNITED LIMITED of 88 Queen Victoria
Street, London, E.C. Electrical Engineers and Contractors, do hereby declare the
nature of this invention to be as follows :-
The object of this invention is to produce a lubricator, preferably of the sight-
feed type, in which it is possible to obtain an adjusted or drop-feed, and at the
same time admit, without affecting the said adjustment, of a full stream being run
through or the complete cut off of the supply.
The drop-feed moreover is obtainable through any bore of pipe without con-
tracting it or forming a nozzle, and a float or level indicator may be added.
In carrying out this invention, we make use of the ordinary reservoir or oil
cup of any convenient type, and the cock or tap may be of a similar nature to
a gas tap, capable when turned to a certain position against a stop of cutting off
all the supply, and when turned more or less at right angles to this position,
admitting of a full stream being turned on; but this motion being continued, a
lug, pin or equivalent projection on the rotating plug comes in contact with an
adjustable screw (working through a projection on the body of the cock) whereby
the said plug movement is limited or controlled.
That a large bore for the oil may be used and choking prevented, whilst at
the same time a "drop by drop" feed is produced, a tube is used beyond the
cock and this is bevelled so that a slow flow culminates in a drop forming at
the extreme point thereon.
When a transparent cup is not used, a float may be provided having its upward
movement stopped, when an indicating stem is, say half inch outside the cover,
the float inside being at such a distance down that it allows the outside stem
to begin to descend when the supply of oil has been reduced to, say one hour's
consumption.
Obviously though oil is mentioned throughout, this same arrangement is applicable
to controlling other fluids used for a similar or equivalent purpose, and modifica-
tions in construction may be made without departing from the spirit of this
invention.
Dated this Thirtieth day of March 1892.
C. SCOTT SNELL.
WOODHOUSE & RAWSON UNITED, LIMITED,
A. L. Foley, Secretary.
COMPLETE SPECIFICATION.
Improvements in Drop-feed Lubricators and the like.
We, CHARLES SCOTT SNELL of Culver Park, Saltash, Cornwall, Engineer,
and WOODHOUSE AND RAWSON UNITED LIMITED of 88 Queen Victoria
Street, London, E.C. Electrical Engineers and Contractors, 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 :-
The object of this invention is to produce a lubricator preferably of the sight
feed type, in which it is possible to obtain an adjusted drop feed, and at the
same time allow, without affecting the said adjustment, of a small stream being
run through or the complete cut off of the supply.

page_text: The more ready to expiam our invention reference is made
panying drawings.
Fig. 1 is an elevation of the lubricator.
Fig. 2 is a sectional elevation of the same.
Like letters refer to like parts.
LO
In the figs., A is the oil reservoir and B a syphon tube for conducting the oil
to the bearings through the cock C which may be of the common gas tap type,
capable when turned to a certain position against a stop of cutting off all the
supply and when turned more or less at right angles to this position admitting
of a full stream being turned on.
On the plug part of the tap a lug pin D is fixed which comes in contact with
the adjustable screw E whereby its movement is controlled. It is obvious that by
adjusting the screw E the flow of oil may be fixed in such a way, that on starting
the machinery, an already adjusted flow of oil may be obtained by simply turning
the cock, until the pin D comes in contact with the screw E, and the supply may
be completely cut off by turning the cock, until the lug pin D comes in contact
with the stop pin F. A drop by drop feed is obtained by using a bevelled tube
shown at G Fig. 11 which may be of far larger diameter than is actually necessary
to carry the amount of oil passing..
When a transparent cup is not used a float H may be provided, having its
upward movement arrested by the tube J, when an indicating stem K attached to
the said float H is say half an inch outside the cover, the float H being inside at
such a distance down, that it allows the outside stem K to begin to descend when
the supply of oil has been reduced to say one hour's consumption.
Obviously though oil is mentioned throughout this arrangement is equally applic-
able to controlling other fluids which are required to be used in a similar intermittent
manner, such as for instance, the flow of water over a grindstone or the use of
a lubricant, as soap and water' when turning iron or steel.'
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 lubricator the regulation of the rate of flow to full stream or nil, with an
intermediate prearranged rate, substantially as described and for the purposes set
forth.
2. In a lubricator the use of a tube with bevelled end or equivalent construction
causing a drop by drop feed substantially as described and for the purposes set
forth.
C. SCOTT SNELL.
WOODHOUSE & RAWSON UNITED, LIMITED,
A. L. Foley, Secretary.