IMPROVEMENTS IN SIGHT FEED LUBRICATORS
Year: 1884

page_text: I, ARCHIBALD BAIRD, 67 Robertson Street, Glasgow in the County of Lanark,
Engineer, do hereby declare the nature of my invention for IMPROVEMENTS IN
SIGHT FEED LUBRICATORS to be as follows:-
This said invention has for its object the better regulating the supply of oil to
steain or other engines whereby a considerable saving in oil is effected, and
especially in the constructing and acting parts therefor.
The nature and novelty of this said invention or improvement is, first a
Cylindrical Reservoir or Vessel to contain the oil or Lubricant with a loose valve
at top to admit the Lubricant and an internal screw at bottom for fixing same to
a square or round bar, which has a valve at each end for controling the flow of the
Lubricant. On the right hand is a communication from a tube rising to near the
top inside oil vessel and terminating in a cone which is bell-mouthed inside of a
glass tube which is filled with water, and fixed with coupling nuts to round or
square bar at bottom, and to square at top which is fixed on one end to side of oil
vessel, the other having a valve with two conical faces, one for shutting off the
steam from the main inlet and outlet steam pipe, and the other when open to steam
pipe, closing against a conical seat on top side.
The Connection of this valve to steam pipe is trumpet mouthed, on the left hand
side of oil vessel is a communication froin centre of Lubricator to a pear-shaped
condenser, which is fixed on top part of bar near the end, having a small syphon
tube rising near to the top inside and on the upper part of condenser is a sinall
coupling for carrying a pipe to steam inlet for the purpose of condensation. The
valve at end of bar, shuts off the communication from oil vessel when desired.
A small double conical valve is fixed at bottom on centre of bar and communicates
with oil chamber for running off condensed water when desired.
L
COMPLETE SPECIFICATION.
I, ARCHIBALD BAIRD, Number Sixty-seven Robertson Street, Glasgow in the
County of Lanark, Engineer do hereby declare the nature of my invention for
IMPROVEMENTS IN SIGUT FEED LUBRICATORS and in what manner the same is to
be performed to be particularly described and ascertained in and by the following
statement:
In order that this invention may readily be seen and understood I annex
explanatory drawing. A is the cylindrical Vessel for containing the Oil or
Lubricant, with a loose valve B screwed in at top for admission of same.
On

page_text: under side of Cylinder is an internal screw C for fixing on to screw C¹ cast on
square or round bar D. To the right hand of this bar is fitted valve G for
regulating the flow or drops of Oil, passing up cono H which is bell-mouthed and
stands inside of a glass tube I which is filled with water and is held in position by
nut and stuffing box at top and bottom, top being fixed to side of Oil vessel and
having a valve J fitted for the exit of Oil and also for the shutting off of steam
from Steam Pipe. This valve J is fitted with two conical shaped faces, the one as
mentioned for the exit of Oil and the shutting off steam from main Steam Pipe,
and the other or smaller face J' for closing against a conical scat on the under sido
of stuffing box to effectually prevent the leakage of Oil and at the same time
preserve the usual packing. This style of double faced valve is also applied at
both ends of bar D. L is nut for admission to glass tube and for filling with water
and for cleaning when necessary. M is valve at left hand, communicating by
channel M with Cylindrical vessel and also with a pear-shaped condenser F fitted
on to top of bar and having an internal Syphon Tube N.
O is a small valve for drawing off the condensed water from the cylinder when
all the Oil has been used. On the top of Condenser is fitted a Syphon Tube P
joined at other end to main Steam Pipe K; this tube is for the purpose of supplying
the Condenser with water and has the usual connecting couplings. Qis internal
tube for conducting Oil to bell-mouthed cone H.
The mode of working this apparatus is as follows:-Oil is poured into vessel by
removing plug B, all valves being shut. On filling vessel close plug B, admit
steam from main pipe K to Condenser F'; upon steam condensing and filling it,
open valve M to admit pressure of water on under side of Oil which lifts it over
mouth of tube Q, thence along channel R its flow is regulated by the valve G up
tube H where it issues through water in glass tube I and thence in direction of
arrow S, through valve J to Steam Pipe or cylinder and will continue to rise in and
will continue to rise in Globules through the water until Oil is exhausted. When
the valves J. G. M. are closed and the valves O and B opened the condensed water
will drain off from Cylinder.
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:
First. The general construction arrangement and combination of a Sight Feed
Lubricator, for Steam, substantially as shewn and described.
Second. The double-faced Valves substantially as shewn and described.
Third. The forming of the Oil Cone H with a bell-mouth near to top; also
trumpet-mouthed Coupling entering Steam Pipe K, all substantially as
shewn and described.
Dated this nightoonth day of Norch 1891