Improvements in Lubricators.
Year: 1896

page_text: Date of Application, 26th May, 1896-Accepted, 27th June, 1896
COMPLETE SPECIFICATION.
Improvements in Lubricators.
I, JOHN JOSEPH KENNEDY, of Carbondale, in the County of Lackawanna,
and State of Pennsylvania, United States of America, Gentleman, 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:-
'
My invention relates to lubricators for journals and bearings and the objects in
view are to produce a lubricator of cheap and simple construction and adapted
for application to any kind of a journal or bearing as on fixed or portable machinery
or vehicles of any description; to so construct the lubricator as to adapt it to
contain a quantity of liquid lubricant and to discharge the same by a simple
operation of the device to the points desired in predetermined quantities and finally
to protect the device from dust.
Various other objects and advantages of the invention will hereinafter
appear and the novel features thereof will be particularly pointed out in the
claims.
Referring to the drawing,
Fig. 1 is a side elevation of a lubricator constructed in accordance with my
invertion, the dust-cap being shown in section.
Fig. 2 is a vertical longitudinal sectional view of the device the dust-cap being
removed.
Like numerals indicate like parts in all the figures of the drawing.
In practising my invention employ a reservoir 1 designed to contain liquid
lubricant which reservoir is designed so as to adapt it to the particular position it
is intended it shall occupy and its external shape may be varied so as to accom-
modate it to the specific application. One of the most ordinary forms however is
that illustrated and which as shown is of inverted truncated cone shape. The
lower end of the reservoir 1 is somewhat abruptly reduced to form a neck 2, and
threaded in the lower end of said neck is the flexible discharge pipe 3. Instead of
being flexible the pipe 3 may be rigid. I however prefer flexibility of this part in
order that the device itself may be located in any desired best adapted position and
the discharge pipe 3 given such a course as will adapt it to conduct the lubricant to
the desired point.
The interior of the reservoir immediately above the pipe 3 and within the neck 2
is provided with a cavity 4 and the same has at its upper end an annular recess 5
the wall of which is threaded. Seated within this annular recess 5 and externally
threaded to engage the threads thereof is a fillet 6 the same being of such width
as to leave an annular shoulder 7 between its inner surface and the wall of the
cavity 4.
Seated upon this shoulder 7 is the annular flange 8 that surrounds a valve-
scat 9 the latter depending a short distance into the cavity 4 and being provided
with a central perforation 11 and an annular series of discharge perforations 10.
Located in the central perforation 11 is the reciprocating valve-stem 12 carrying
the valve 13 at its lower end and the head 14 at its upper end. A spring 15 is
interposed between the head 15 of the valve stem and the valve seat 9 and serves
to normally raise the valve so as to close the latter against its scat. The interior
of the fillet 6 is threaded and the same receives the lower end of a cylinder 16, the
same being externally threaded at its upper and lower end the latter threads

page_text: engaging with those of the fillet. The lower end of the cylinder bears upon the
valve seat 9 so that the latter by said cylinder is secured immovably in position.
The cylinder is somewhat longer than the reservoir and therefore extends above
the same. A cap or cover 17 is provided with an internally threaded depending
flange which engages with similar threads produced upon the upper end of the
reservoir. At one side of its center the cap or cover 17 is provided with a filling
opening 18 and closing the same is a removable plug 19 threaded therein.
At its center the cap or cover is provided with an opening fitting around
the cylinder 16 and an annular flange 20 encircles the opening and therefore the
cylinder.
Near its lower end and at diametrically opposite sides the cylinder 16 is tapped
and located therein are radially disposed valve cases 21 having removable caps 23
located on their outer ends. The caps are perforated as at 22 and between said
caps iuwardly-opening clack valves 24 are located. The upper end of the
cylinder 16 has threaded thereon a guide cap 25, the same being centrally
perforated or bored in an axial line as at 26 and having its lower end formed with
a depending internally threaded flange which removably engages with the threads
on the upper end of the cylinder. Between the lower end of the guide cap 25 and
the upper end of the flange 20 of the cap or cover 17 a filling sleeve 28 may
encircle the cylinder. The upper end of the guide cap 25 is reduced and externally
threaded as indicated at 29 and threaded thereon in an adjustable manner is
the cap 30 the same being perforated as at 31 in line with the axial bore 26 of
the guide cap. Arranged between the guide cap and adjustable cap 30 is a
soft washer 32 below which is a metal plate 33. This constitutes a stuffing box
in which wear may be compensated for by a simple adjustment of the cap 30
in such manner as will cause it to compress and spread the soft washer or
stuffing 32.
Passing through the stuffing box thus constructed and the upper end of the
guide cap 25 and depending into the cylinder 16 is the plunger rod 34 whose upper
end beyond the stuffing box is provided with a removable head 35 and whose lower
end is reduced and threaded to receive a nut 36 above which is located a pair of
metal disks 37 which embrace the upper and lower sides of a disk 38 the whole
constituting a well known form of piston head. This completes the construction
of one of the simplest forms of my device with the exception of the dust-cap 39
which may or may not be employed and which is employed readily takes over the
upper end of the reservoir in a removable manner and as shown will effectually
exclude the dust from the moving parts which might otherwise be impeded in their
operation.
The operation of the device will be obvious from the description but may be detailed
as follows: The operator after removing the dust cap draws the plunger upwardly,
the piston thereof being brought to a point above the inlet valves. This creates a
vacuum below the piston, causing the inlet valves to open inwardly and admit the
lubricant from the reservoir into the cylinder. A subsequent depression of the.
plunger causes the inlet valves to close and forces the lubricant through the lower
or discharge valve 9 into the cavity 4 from whence it is conducted by the discharge
pipe 3 to the desired point.
From the foregoing description in connection with the accompanying drawings
it will be obvious that my invention is subject to many changes as regards its
details and I therefore state that I do not limit the same to such exact details as
lare herein shown and described but hold that I may vary the same within the scope
of my invention and mechanical skill so as to adapt it for use in any of the various
positions to which it may be applied.
!
Having now particularly described and ascertained the nature of my said inven-
tion and in what mauner the same is, to be performed, I declare that what I
claim is
1. In a lubricator the combination with the reservoir externally tapered at its

page_text: lower end and within said tapered portion provided with a cavity of less diameter
than the interior of the reservoir and at whose lower end is located a discharge,
the wall of said cavity below the general bottom of the interior of the reservoir
being provided with an annular recess and closing the top of the cavity and
having a downwardly opening valve, a pump cylinder threaded in the wall of the
annular recess and bearing upon and retaining the valve in position and above said
point having inlet valved openings and a plunger located in the cylinder,
substantially as specified.
2. In a lubricator the combination with the reservoir having a cavity for.ned in
the bottom of its interior which cavity terminates at its lower end in a discharge
and at its upper end is provided with an annular recess, of a valve-seat arranged
in the recess and carrying a downwardly opening valve, a cylinder threaded
in the recess and retaining the valve seat in position and at its upper end
projecting above the reservoir, valved openings located in the cylinder imminediately
above its lower end, a plunger arranged in the cylinder, and a cover removably
threaded on the upper end of the reservoir and encircling the cylinder, substantially
as specified.
3. In a lubricator, the combination with the reservoir having a cavity formed in
the bottom of its interior which cavity terminates at its lower end in a discharge,
and at its upper end is provided with an annular recess forming a valve-seat,
of a downwardly opening valve arranged in the seat and of a width or thickness
less than the depth of the seat, a cylinder threaded at its lower end in the
annular recess or seat and bearing upon and serving to retain the valve within
its seat, said cylinder being provided with valved inlets communicating with the
interior of the reservoir at points above the valve and a plunger arranged in the
cylinder.
DL: oil 1 of M. 1906
BOULT & WADE,
Agents for the Applicant.