Year: 1888

page_text: Date of Application, 5th Jan., 1888
Specification Accepted, 10th Feb., 1888
1, PAULIN GABRIEL PASQUET of Sermaises in the Republic of France, 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:—
The present invention relates to improvements in lubricators and it has for its object
to design a lubricator which permits the lubricant to pass down onto the surface to he
lubricated when it is not sufficiently lubricated but intercepts the passage of the
lubricant automatically as soon as sufficient of the latter has passed onto the surface.
The lubricator is provided with a downwardly projecting tube in which is placed
a loose spindle formed with a head which closes the opening of the lubricator through
which the lubricant descends. This spindle rests on the surface to be lubricated and
the weight of the lubricator rests on the head of the spindle. When the surface to be
lubricated is getting too dry the friction of this surface against the lower end of the
spindle will deviate the latter from its vertical position more or less according to the
inore or less dry state of the said surface and thus cause the head of the spindle to
uncover the opening of the lubricator to allow the lubricant to descend to the surface
to be lubricated. When this surface is sufficiently lubricated the friction thereof
against the lower end of the spindle will not be sufficient to deviate the spindle from
its vertical position and the opening of the lubricator will be closed until the surface
requires lubricating again.
In the accompanying drawings,
Fig. 1 represents a vertical section of the lubricator the head of the spindle closing
the opening for the passage of the lubricant.
Fig. 2 represents a vertical section of the same, the opening of the lubricator being
uncovered.
Figs. 3, 4 and 5 are modifications in vertical section.
The lubricator represented in figures 1 and 2 is constructed as follows:
The neck of the reservoir A which is made of glass or any other suitable material in any
desired shape, is provided with a screw-threaded metal ring B onto which is screwed
сар D provided in the centre with a tube C.
a

page_text: Before the cap 1) is screwed on the ring B a conical chamber or cap E which is
formed with an opening in the top is introduced between them together with a packing
ring F and in this conical chamber is the head G of the screw-threaded spindle H.
This bead is sufficiently large to prevent it from passing through the tube C of the
cap D.but it fits accurately into the upper end of this tube the inner edge of which is
bevelled.
On the screw-threaded spindle H is placed an adjustable nut I of the same diameter
as the inside of the tube C and this nut is star-shaped to permit the lubricant to
pass it.
In use the tube C of the lubricant is passed through an opening of a suitable
support into which opening it fits easily, and the support must be arranged in such a
manner that only the extreme end of the spindle H bears against the revolving shaft.
When the shaft is in motion the friction of the shaft against the lower end of the
spindle H will deviate the latter from its vertical position and the head G of the
spindle which turns in the tube with the nut I as a centre of motion will uncover
the opening of the lubricator and permit the lubricant to pass down onto the revolving
sha ft. When the shaft is sufficiently lubricated the friction against the lower end of
the spindle H will be almost nil and the weight of the lubricator bearing on the head of
the spindle will cause the latter to return to the highest part of the conical chamber E
and thus close the opening of the lubricator.
.According to circumstances the extent to which the opening of the lubricator is to
be uncovered by the head of the spindle, is regulated by the position of the nut I.
When it is necessary or desirable to construct the tube Crather long it is preferable
to use the form represented in figure 3.
In this form the tube C terminates in a conical valve seat K formed with an
opening large enough to allow the spindle the necessary lateral movement. The
head G is in the drawing shown screwed onto the lower end of the spindle and fits in
the valve seat K of the tube C. To retain the spindle in the tube it is provided at.
its upper end with a disc or cap L which closes the tube when the lubricator is
carried from or to the place where it is used. On the bottom this disc is provided
with an annular projection which fits easily into the top of the tube Cand is provided
with perforations or grooves for the better passage of the lubricant.
When the shaft is sufficiently lubricated the weight of the lubricator will keep the
head G in its.conical scat K and when the friction of the shaft becomes too strong
the spindle is allowed sufficient lateral movement to allow the head to uncover the
opening of the conical scat K for the passage of the lubricant.
Figure 4 represents a combination of the two above described systems, the lower
part of the tube being constructed similar to figure 3 and the upper part of the spindle
acting similarly to figures 1 and 2. The upper part M of the tube is in this instance
formed cone-shaped and closed by the upper end of the spindle which however cannot
pass through the opening of the cone-shaped upper part of the tube. The bead G fits
into the value seat K on the lower end of the tube. The nut I is fixed on the spindle
in about the middle of the tube C and also serves to retain the spindle in the tube
when the lubricator is removed from its support.
Figure 5 represents a further modification in which the screw-threaded spindle is
shorter and does not reach to the opening of the lubricator the disc L is here
dispensed with, and the stud N is inserted into the tube by which stud the position of
the star-shaped nut I may be regulated by drawing the spindle down until the said
stud N engages with the nut. I.
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
1 claim is
1. An automatic lubricator worked and regulated by the antagonistic forces of the
weight of the apparatus and the friction of the surface to be lubricated against the part
of the lubricator bearing thereon.
2. The herein described lubricator consisting essentially of a reservoir on the end

page_text: of a tube which can slide easily in the opening formed in the support, a conical
chamber in which is placed and retained the conical head of a spindle which spindle
projects through the tube and bears against the surface to be lubricated and an
adjustable nut screwed onto the said spindle in the interior of the tube substantially as
and for the purpose described and represented in figures 1 and 2 of the accompanying
drawings.
3. The modification represented in figure 3 of the accompanying drawings, in
which the head is placed at the lower end of the spindle the upper end being
retained in the reservoir by means of a cap or disc fastened to the upper end of the
spindle and the cone-shaped chamber being dispensed with, substantially as and for
the purpose described and shown in the drawing.
4. The modification represented in figure 4 being a combination of the forms
represented in figures 1 and 2 and figure 3 substantially as described and shown in
the drawing.
in which the screw-threaded spindle
5. The modification represented in figure
is shorter the disc L dispensed with and in which the position of the nut I may be
regulated by means of a pin or stud N substantially as described and shown in the
drawing.