Improvements in and relating to Mechanically Actuated Sight Feed Lubricators for Lubricating the Parts of Steam Engine Cylinders or other Machinery.
Year: 1899

page_text: Date of Application, 4th Mar., 1899-Accepted, 6th May, 1899
Improvements in and relating to Mechanically Actuated Sight Feed
Lubricators for Lubricating the Parts of Steam Engine Cylinders
or other Machinery.
I, WILLIAM BRIERLEY, of The Borough Brass Works, Rochdale, in the County
of Lancaster, Brass Founder and Confectioners Machinist, do hereby declare
the nature of this invention and in what manner the same is to be per-
formed, to be particularly described and ascertained in and by the following
statement:--
My invention relates to improvements in connection with mechanically actuated
sight feed lubricators for lubricating the parts of steam engine cylinders or the
parts of other machinery with oil or liquid lubricant.
This invention relates more particularly to improvements of my mechanically
actuated sight feed lubricator the subject of Letters Patent granted to me bearing
date 2nd June 1897, and numbered 13556.
The objects of my present improvements are to provide or adapt the oil pump
so as to operate or be double acting i. e. to be capable of forcing the lubricant
thro the lubricator at each stroke of the pump piston respectively, by which means
I am enabled to discharge a constant supply or volume of lubricant at the parts
desired to be lubricated.
A further improvement consists in the employment of a second tube or lubricat-
ing thoroughfare in conjunction with the glass sight tube, whereby I am enabled
to pass or transmit the lubricant thro the lubricator independently of or from the
said glass tube, which second tube is adapted to be used or for use in the event
of damage to the glass tube, consequently in such event lubrication may be con-
tinued or lubricant passed through the said second tube during the removal of the
glass as may be necessary for repairs or cleaning purposes. Thus according to my
improvements copious supplies of lubricant may be provided, also lubrication
effected, without interruption due to causes above named.
In order that my invention may be clearly understood, I have reference to
the accompanying sheet of drawings, in which like letters of reference indicate
like parts throughout the various figures therein shewn.
Fig. 1, is a sectional elevation of my invention.
Fig. 2, is a plan of Fig. 1.
Fig. 3, is a detail shewing the piston which intercepts the two way lubricating
thoroughfares in or from the oil chambers of the lubricator.
Fig. 4, is front view of piston piece Fig. 3.
a, is the oil reservoir which contains or stores the lubricant and in which the
pump mechanism is located consisting of the eccentric b: levers c and d, barrel e,
and biston f, which latter is situate within the chamber g, of the barrel e, which
chamber g is provided at each of its extremities with chambers K, K', in which
are situated or provided clack valves h and i.
9
The interior of the barrel communicates with the reservoir, a; by means of
suitable valves, thro which the lubricant may be drawn in at each end thereof

page_text: by the action of the piston f; the chamber K' is surmounted by a spring weighted
clack valve, communicating therewith by means of a passage or orifice . The
chambers K, K' are connected together by means of a branch piece or tube J. The
valve, i, communicates with the oil chamber, 'at the lower part or foot of the
lubricator, but between the said chamber K, and the oil chamber 1; is interposed
a check or supply valve, k. The oil chamber, l, communicates with the thorough-
fare leading to the pump chamber K, by means of an annular orifice /, with the
orifice in the tube, p, and the orifice leading to the jet nozzle m, situate
in the sight tube n; by means of the orifice 1. The orifice terminates within a
chamber, s, at the upper or head part of the lubricator, which chamber likewise
communicates with three orifices, riz. annular orifice which extends around and
within the head of the lubricator, the orifice t, leading from the interior of the
glass tube n, and the orifice 2 in the tube p, but the annular orifice leads to or
communicates with the outlet passage to the part desired to be lubricated.
Within the oil chambers, and s, respectively are provided piston pieces w, and
which piston pieces are provided with orifices w₁ and a¹, at one extremity of
the piston spindles and I provide shaped parts forming valve covers w³,
which parts, when the spindles are suitably turned, seat upon, or cover the
orifices and t¹, which spindles are provided with screw threaded parts, which
rerew into stuffing boxes, y, and z, situate within glands A and B.
At the upper part of the said glass tuben, I employ a spring weighted air admission
valve, C, within the orifice 1), which orifice is open to the atmosphere, the said
valve is provided at this part in order to avoid a vacuum or a back pressure within
the tube n.
Within the oil reservoir, a, as shewn in Fig. 2, two double acting pumps are
employed, each adapted to supply a lubricator at E and F. It must be understood
that any number of such double acting pumps may be employed therein according
to the number of lubricators desired to be employed as the case may be.
The operation of my invention is as follows
When the piston f is actuated thro the medium of the eccentric disc on the
shaft, G, which is rotated thro the medium of the toothed ratchet wheel Hand
pawl I on the suitably actuated rod I, the said piston is caused to slide backward
and forward within the chamber g, of the barrel c, during each respective stroke
of which, oil or lubricant is drawn alternately at each end within the chamber g
thro a valve communicating with the reservoir, a, and is forced at every stroke
thro the valve or i, respectively from the interior of the barrel, e, in the former
case thro branch piece J, leading from chamber K¹ to K, in the latter case the
oil is forced into chamber K direct thro' the valve opening i, thus in both cases the
lubricant is discharged into chamber K, from thence the lubricant passes thro
orifices L, valve k, into the annular space l', around the shaped terminal w³ into
chamber, 7, thro the orifices w₁, in the piston piece w, thence thro' the orifice 12
into chambers, thro orifices of the piston piece around the shaped terminal
of the spindle into the annular orifice around the head u¹ thence out thro' the
valve to the part to be lubricated.
As shewn in the drawings the valve covers, w³ and 3 are shewn closing the
orifices 7* and leading to the orifice 13 and from the interior of the glass tube n,
consequently under such conditions the lubricant can only be discharged thro the
tube P.
When the lubricator is at work under ordinary conditions, the lubricant passes
thro che glass tube , in which water is provided, as is well known, then the
piston pieces and,, are moved back by turning the spindles and 2 orifices
and are then opened, whilst the piston e, closes orifice P, thus communication
in between the oil supply and 12 is shut off the lubricant can then only pass
thro and to the point of discharge.
My invention thus provides a bye-pass for the delivery of lubricant thro the
lubricator which is specially adapted to be employed in the event of damage to or
removal of the glass tube n. as the case may be.

page_text: In the event of the supply of lubricant being in excess of the quantity delivered
thro the lubricator due to a check applied to the delivery by means of the valve k
or or from other causes as the case may be, the said lubricant may be pumped
back again into the reservoir thro the adjustable or spring weighted relief valve j
which may be due to an opposing pressure such as the presence of a volume of oil
which may fill or block the supply orifices.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, I declare that what
I claim is:-
1. In combination reservoir, a, eccentric actuated piston f, barrel e having
chambers K, K¹ in which are situated clack valves and i, branch piece J, relief
valve j, the whole forming a double acting pump arrangement, which arrangement
I employ in conjunction with a sight feed lubricator having two way passages at
its receiving and delivery parts respectively, whereby lubricant may be delivered
or discharged at the parts to be lubricated thro an emergency tube or orifice,
independently of or from the sight tube as and for the purposes herein fully set
forth and described in the annexed drawings.
2. In combination reservoir, a, and double acting pump arrangement as described
in the foregoing claim as and for the purposes herein fully set forth and described
in the annexed drawings.
3. In combination the double acting pump-arrangement, two way orifices, P,
and, t, p, chambers 7, and s, annular orifices and t. piston pieces w and, as
and for the purposes herein fully set forth and described in the annexed drawings.
4. In. combination the chambers 7, s, having three ways or orifices and to
respectively, with screw threaded gland fitted spindles, carrying piston
pieces,, as and for the purposes herein fully set forth and described in the
annexed drawings.
5. In combination barrel e having chambers K, K and clack valves h, i, with
two-way orifices and tas and for the purposes herein fully set forth and
described in the annexed drawings.
6. The chamber, or s having three-way orifices as herein set forth.
7. The piston piece, or as herein set forth.
Dated this 3rd day of March 1899
J. H. BUTTERWORTH & Co.,
Rochdale, for the Applicant.