Improvements in Lubricators.
Year: 1898

page_text: Date of Application, 4th June, 1898-Accepted, 20th Aug., 1898
Communicated from abroad by the Firm of VUG AND VRAALSEN, of Nedre, Slots-
gade, No. 5, Christiania, in the Kingdom of Norway, Manufacturers.
Improvements in Lubricators.
I, WILLIAM PHILLIPS THOMPSON, F.C.S., M.I.M.E., of the Agency for Foreign
Patent Solicitors, 322, High Holborn, in the County of Middlesex, 6, Lord Street,
Liverpool, and 6, Bank Street, Manchester, both in the County of Lancaster, and
Lower Temple Street, Birmingham, in the County of Warwick, Civil 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:-
This invention relates to lubricators and especially to that kind or class of
lubricators in which a pump is provided, the piston of which has both an axial and
a rotary motion. The invention consists in improvements whereby the construc-
tion of such lubricators is greatly simplified, and by which the working or operation
of the same is facilitated.
In the accompanying drawings
Figure 1 is a longitudinal section through the pump-cylinder of a preferred
form of the improved lubricator and
Figure 2 is a cross section on the line 2, 2 of the same.
Figures 3 and 4 are views similar to Figure 1, illustrating modifications and
Figure 5 is a cross section on the line 5, 5, Figure 4.
The apparatus consists of the cylinder C communicating through the pipe
with the oil reservoir, and through the pipe with the part or space to be lubri-
cated. The cylinder is provided with a piston S, which is simultaneously moved
axially and rotated the valves governing the entrance and exit of the oil being
worked through the rotation, and the axial movement. causing the oil to be pumped.
The piston is rotated by means of a pawl and a ratchet wheel or other suitable
means, the axial movement being caused by a cam slot s in the piston in which
slot the fixed pin p engages.
Z is a valve disc which partakes of the rotary movement of the piston, having two
stems n, which are received in holes in the piston, serving as guides for the same,
springs e being provided for keeping the valve disc pressed against the cylinder
end. As the disc Z only covers part of the cylinder end, it will alternately close
the one or the other of the openings to the channels k¹, in such a way that when
the piston moves backwards it will draw in oil through the channel and when it
moves forwards it will force the oil out through the channel .
In Fig. 3 is shown a modification of the above described apparatus. In this
form of the lubricator, the piston itself consists of a sleeve S¹ which surrounds the
stem S of the valve. This stem S has only a rotatory motion being extended
outside the pump cylinder where it receives such motion in a similar manner to
that hereinbefore described for the piston rod. This motion of the stem S¹¹ causes
the sleeve S¹ to receive an axial motion, by reason of a pin p on the inside of the

page_text: sleeve engaging with a cam slots in the stem, the said sleeve being prevented from
rotating by a pin q extending from the pump cylinder into a longitudinal slot in
the sleeve. The operation of this device is similar to that of the form previously
described with reference to Figures 1 and 2..
A simplified construction of the apparatus is shown in Figures 4 and 5. In
this case the openings of the channels K', K2 are arranged in the cylinder sides
instead of in the end thereof, and the valve is dispensed with, the half-round end f
of the piston itself acting as the valve, as will be easily understood from the
drawing.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, as communicated.to
me by my foreign correspondents, I declare that what I claim is:-
1. In a lubricator the combination with the pump cylinder of a piston having
both an axial reciprocating motion and a rotatory motion, and a valve disc partly
covering the end of said pump cylinder and partaking only of the rotary motion
of the piston, said end of the cylinder being provided with inlet and outlet openings
for the lubricant.
2. Lubricators constructed and operating substantially as described with refer-
ence to Figures 1 and 2, or to Figure 3, or to Figures 4 and 5 of the accompanying
drawings.
Dated the Fourth day of June Toyo.
W. P. THOMPSON & Co.,
322, High Holborn, London, W.C., Patent Agents for the Applicant.