Improvements in Sight Feed Lubricators for Engine Cylinders.
Year: 1890

page_text: Date of Application, 16th June, 1890
Complete Specification Left, 14th Mar., 1891-Accepted, 18th Apr., 1891
PROVISIONAL SPECIFICATION.
Improvements in Sight Feed Lubricators for Engine Cylinders.
I, CHARLES DUDLEY AUSTIN, of Manor Chare, Newcastle-on-Tyne, County
of Northumberland, Engineer, do hereby declare the nature of this invention to he
as follows:-
:-
I construct a sight feed lubricator with a vessel to contain the oil discharged
by Austin's annular syphon, consisting of a discharge tube projecting vertically
into the vessel containing the oil & covered by another tube closed at the top,.
with or without regulating plug or screw projecting into top of discharge tube
in any of the modes described in my Patent No. 16715, 1887.
In the stem of the aforesaid lubricator is a slot or cavity open to the
atmosphere down which the oil can be seen dropping, & lower down in said
stem & communicating by small passage with said slot is a recess or chamber
in which works a double faced valve which beats in rising from the pressure of the
steam or vapour in the cylinder against a seat in top of the chamber & in its
descent against a seat formed in a centrally perforated adjustable screw which
holds the valve in its place in the chamber & renders the lift of the valve
capable of regulation.
The oil on dropping from the vessel down the slot in the stem enters the
small passage communicating with the valve chamber & thence between the
beats of the valve passes through the aforesaid chamber & the central hole in.
the regulating screw to the cylinder of the engine to which it is attached.
Dated this 14th day of June 1890.
CHARLES DUDLEY AUSTIN..
COMPLETE SPECIFICATION.
Improvements in Sight Feed Lubricators for Engine Cylinders.
I, CHARLES DUDLEY AUSTIN, of Manor Chare, Newcastle-on-Tyne, in the
County of Northumberland, 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 :-
In steam cylinder sight-feed lubricators as ordinarily constructed the full
pressure of the steam is communicated to the oil-reservoir which is usually con-
structed of metal and of sufficient strength to resist such pressure, so that a separate
gauge with the requisite accessories is rendered necessary in order to ascertain the.
level of the oil in the said reservoir. After such lubricators have been in use for a
short time the glass tubes of the reservoir gauge and sight-feed drop passage.
become dirty and coated with a film of vapour and grease which renders it some-
times very difficult, or even impossible, to readily ascertain the level of the oil in
the reservoir, or, efficient working of the lubricator.
Now, this invention for improvements in sight-feed lubricators for engine cylinders
has for its object to construct a lubricator in which the pressure within the cylinder
is not communicated to the oil reservoir, so that such reservoir may be constructed
wholly or partially of glass; and to dispense entirely with the ordinary glass sight
drop tube, so that the naked drop of lubricant can be clearly seen on its passage
from the reservoir to the engine cylinder to be lubricated.
According to this invention I construct a sight-feed lubricator with a vessel or
reservoir of glass or other suitable material to contain the oil, into the upper part
of which air is admitted, and which discharges by any suitable feed apparatus (such

page_text: for example as my annular syphon feed for which a Patent No. 16715 of 1887 was
granted to me, which consists of a discharge tube projecting vertically into the oil
reservoir and covered by another tube closed at the top, with or without a
regulating plug or screw projecting into the top of the discharge tube) through a
slot or cavity open to the atmosphere down which the oil can be seen dropping,
while beneath the said slot or cavity and communicating with it by a small passage
is a chamber in which works a double faced valve which is caused by the
of steam or vapour in the cylinder to beat against a seat in the top of the chamber,
and in its descent against a scat formed in a centrally perforated adjustable screwed
guide, which holds the valve in its place in the chamber and renders its lift capable
of regulation.
pressure
The accompanying drawing represents a vertical section of a lubricator con-
structed according to this invention.
An oil vessel or reservoir a into the upper part of which air is admitted is pro-
vided with a syphon feed apparatus consisting of a discharge tube projecting
vertically into the oil reservoir a and covered by another tube e closed at its top
by the regulating screw plug d projecting into the discharge tube b. An outer
tube perforated at for the admission of oil to the syphon is screwed into the
stem, the cap for securing the steam and reservoir together being secured at its
upper end as clearly shown. The oil on leaving the tube drops through the open
slot or cavity and passes through the perforated chamber m and passage n com-
municating with the valve chamber », and thence between the beats of the valve pr,
chamber o, and passages into the cylinder of the engine. The object of the
perforations in the chamber me is to permit of the escape of any steam, and reduce
the escape of steam through the sight-slot.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is
1. In sight feed lubricators for engine-cylinders the employment of a double
beat non return valve to admit the lubricant to the cylinder, and to prevent the
steam or other pressure from passing from the cylinder to the oil reservoir, con-
structed and arranged substantially as described.
2. In sight feed lubricators for engine cylinders: the combination with a double-
beat non return valve operated as described of a syphon feed apparatus arranged
constructed and operated substantially as described.
3. In sight feed lubricators for engine cylinders: the combination with a double
nou return valve operated as described of an open sight slot or cavity, arranged
and constructed substantially as described.
4. In sight feed lubricators for engine cylinders: the combination with a double-
beat non-return valve operated as described of a glass oil reservoir open to the
atmosphere and an open sight slot or cavity with or without escape perforations,
the whole arranged, constructed, and operated substantially as described and for the
purpose set forth.
5. The arrangement and construction of sight feed lubricators for engine cylinders
substantially as described with reference to the drawings.
Dated this 14th day of March 1901
CHAS. D. AUSTIN.