Improvements in Lubricators.
Year: 1889

page_text: Date of Application, 5th June, 1889
Complete Specification Left, 5th Mar., 1890-Accepted, 5th Apr., 1890
PROVISIONAL SPECIFICATION.
Improvements in Lubricators.
I, HENRY HAMELLE of No. 23 Boulevard de Strasbourg, Paris, in the republic
of France, Engineer, do hereby declare the nature of this invention to be as
follows:-
This invention relates to improvements in spring lubricators for supplying tallow or
like non-liquid lubricants to journal and other bearings.
It frequently happens that the position of the lubricator does not allow of a spanner
being used to turn the lubricator in order to screw the latter and to fix it in place on
the part where it is to be located.
To do away with the six-sided extension with which lubricators are usually provided
and to allow of fixing the lubricator more easily, I form the bottom of the cup of the
lubricator with a slit, slot or opening of any suitable form to receive the blade of a
screw-driver or the like or the square or triangular part of a key in order that the
lubricator can be put in place and fixed by simply turning the screw-driver or
the like.
Lubricators further require an orifice capable of being regulated for feeding the
grease and for this purpose 1 place in the feed tube of the lubricator a screwed
stopper or plug having on its upper surface a slit to allow of it being turned by
means of a screw-driver and at its lower part a diametrical slit or opening preferably
formed of two small inclined passages converging towards the bottom through which
the grease passes.
By unscrewing the stopper a more or less greater portion of the said slit is
uncovered which allows of regulating the section of the orifice through which the
grease is discharged.
Dated the 5th dore of June 1880
G. F. REDFERN & Co.,
4. South Street, Finsbury, London, Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Lubricators.
1, HENRY HAMELLE, of No. 23, Boulevard de Strasbourg, Paris, 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:-
This invention relates to improvements in spring lubricators for supplying tallow or
like non-liquid lubricants to journal and other bearings.
Generally lubricators have part of their outer surface made hexagonal and are
screwed into position by a spanner and it frequently happens that the position of the
lubricators does not allow of a spanner being employed.
Now according to this invention I dispense with the hexagonal part and am enabled
to fix the lubricator in position more easily and for this purpose I form the bottom of
the lubricator cup with a slit, slot or opening of any suitable form to receive the blade
of a screw driver or the like, or the square or triangular part of a key, in order that
the lubricator can be fixed in position by simply turning the screw driver or
the like.
Lubricators further require an orifice the size of which can be regulated for feeding
the lubricant. One way of forming such an opening is to place in the feed tube of the
lubricator a screwed stopper having a diametrical slit or opening through which
the lubricant passes. By unscrewing this stopper to a greater or less extent the said

page_text: by reference to the accompanying drawing in which
Figure 1 is a vertical section of a lubricator constructed according to this
invention.
"'
Figure 2 is a plan of the lubricator with the cup removed.
Figures 3, 4 and 5 are details..
Figures 6 and 7 are sections of the screwed stopper..
Figures 8 and 9 are elevations of suitable forms of keys for fixing the lubricator in
position.
I
Figure 10 is a sectional elevation. of a modification of. the arrangement, shown in
Figure 1.
Figures 11 and 12 are views shewing the arrangement 1 sometimes employ for
connecting the body or grease box of the lubricator to the lower part.
Referring to Figures 1 and 2 the body of the lubricator is constructed of a bottom
part or base A on which is screwed the grease box B, a piston C and a spring
presser D.
The bottom A is provided with slots or recesses f to allow of a key ✗
(Figure 8) being used; these slots can be replaced by a slot (figure 3) for receiving
the blade of a screw driver or by a square opening (figure 4) or a triangular opening
(figure 5). This arrangement allows of screwing the lubricator in place without
necessitating the employment of a hexagonal part; the bottom A is first screwed on
and the box B is then screwed thereto.
The regulation of the size of the discharge opening is effected by the screwed
stopper E (shown in separate views at Figures 6 and 7) provided on its upper side
with a slit or nick a for receiving the blade of a screw driver and at its lower part
with a diametrical opening by preference formed of two small inclined passages
converging towards the bottom. By unscrewing this stopper the opening 6 can be
unscrewed to a greater or less extent thereby regulating the size of the feed opening
for the grease according to requirement.
The improved lubricator can be constructed to allow of a fixed discharge the
screwed stopper in this case coming against a shoulder of the passage o a screw
or other suitable stop; by unscrewing the stopper the feed of the lubricant can be
modified.
If the screwed stopper E extends above the slot f, I make use of a key X having
a cut-away portion a to receive the stopper E as shewn at Figure 9.
Figure 10 shews a modified arrangement of my lubricator in which a regular
feed of the lubricant is obtained.
When a compressor is provided with a spring bearing on a piston it is evident
that the lubricant is not driven or forced out by a force which is always equal;
as the piston descends the spring becomes distended the power is reduced and the
pressure exerted on the lubricant when the piston reaches the bottom part of the
cup is considerably less than at the commencement of its descent.
Under these conditions it will be understood that if the size of the discharge
opening always remains the same the discharge of the lubricant will be lessened
in proportion as the force of compression is reduced; by the modification shown
in Figure 10 this defect is remedied.
To the compressing piston is adapted a rod F which descends with it and passes
through a plate: A which for this purpose is provided with a circular opening g.
The rod F is so constructed that in descending it leaves a space in the opening
which increases in size in proportion as the piston descends.
To obtain this result the rod F can be constructed in many ways, the drawing
shews, by way of example, a conical form, but a rod could be employed having a
groove or channel gradually increasing in size, or any other arrangement of a similar
kind.
It will thus be seen that by this means the size of the discharge opening increases
in proportion as the pressure is reduced and the power of the spring being

page_text: known it is easy to determine by calculation and experience the extent to which
the opening should be enlarged for the discharge of the lubricant to be absolutely
regular.
Figure 10 shews a modification in the manner of mounting the grease box B on
its base A which as in the preceding case is effected without a hexagonal part.
Instead of employing a long continuous thread I employ two helicoidal half-
threads h, h (shewn separately in the two views at figures 11 and 12); these portions
of threads project on the edge of the bottom part A which forms a base while the
body B is provided on its inner circumference with two grooves each forming a half-
helix. It will thus be seen that the lubricator can be easily put together for which
purpose it is only necessary to place the body B over the base A and give the parts a
half turn when the threads will engage in the grooves and the two parts will be
connected together. The number of threads employed may be varied.
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.) Providing the lower part of a lubricator with a slit, slot or other opening
of suitable form to receive the blade of a screw-driver, or the equare or triangular
or other shaped part of a key, in order to screw the lubricator in position and fix
it in place without it being necessary to employ a hexagonal part and spanner
substantially as herein before described.
(2.) Regulating the size of the supply opening for the lubricant by means of a
screwed stopper or plug having a diametrical slit or opening which can be uncovered
to a greater or less extent in order to vary the section or size of the opening
through which the lubricant passes from the grease box to the passage which
conveys it to the part to be lubricated substantially as hereinbefore described.
(3.) The arrangement of lubricator so constructed that the size of the lubricant
discharge opening increases as the pressure of the spring diminishes substantially
as hereinbefore described.
(4.) Mounting the body of the lubricator on its base by means of two helicoidal
half-threads projecting from the edge of the bottom part, in combination with
grooves of similar form in the inner circumference of the body of the lubricator
substantially as herein before described.
(5.) The improved lubricators hereinbefore described with reference to the accom-
panying drawings.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant.