Improved Automatic Lubricator for Solid Lubricants.
Year: 1898

page_text: Date of Application, 23rd Aug., 1898
Complete Specification Left, 18th May, 1899-Accepted, 5th Aug, 1899
PROVISIONAL SPECIFICATION.
Improved Automatic Lubricator for Solid Lubricants.
We, ISAK EKLUND, of Fredsgatan 22, Manufacturer, and JOHN FRÖLÉEN,
5, Vasagatan, Merchant, both of Stockholm, in the Kingdom of Sweden, do hereby
declare the nature of this invention to be as follows:-
Our invention relates to an automatic lubricating device for use with solid
lubricants, and has for its purpose, firstly, to effect an easily regulatable and per-
manent feed which will cease when the movable piston which serves to force the
lubricant out of the holder has reached the bottom of the holder, and secondly, to
provide a convenient method of detaching the lubricator from the machine, whenever
this is desirable for the purpose of re-filling, cleansing or repairs.
Referring to the accompanying drawing in which the device of our invention is
illustrated,
Figure 1 shews the same in elevation
Figure 2 is a corresponding plan.
Figure 3 shews the end elevation of the device and
Figure 4 is a section of the reservoir for the lubricant.
In this is placed a
The apparatus consists as usual of a cylindrical reservoir a.
movable piston b. The bottom of the reservoir is formed of a disc, plate, or the
like c which latter connects below with the tubular prolongation c¹ screw-threaded as
shewn, which prolongation is adapted to be screwed into a bearing or other fixed part
supporting the part of the machinery to be lubricated. On the said support the
reservoir is secured by means of the claw a attached thereto, and a suitable spring
hook a² which can take hold below the annular flange or projection of the piece c, in
such a manner that the said reservoir can be easily detached and replaced again. In
the case of the lubricator illustrated in Figure 1, the piece c forms a flat bottom for
the reservoir a, but the former piece can also be hollowed out in the shape of a cup
(see Figure 4) so that this bottom piece holds a portion of the lubricant. Through
the said piece there passes a channel from the reservoir to the place to be lubricated.
The device for depressing the piston in the cylinder consists essentially of the
following parts, namely, a frame or lever d revoluble about an axle h, which piece
rests by means of an eccentrically supported roller e upon a movable part of the
machine, such as for instance, the revolving shaft in the bearing whereof the piece c
is screwed. This is so devised that the frame or lever d is set in oscillating motion
on account of the eccentric position of the roller. There is further provided a dog f
by means of which the lever aforesaid sets the spur wheel g, rigidly attached to the
axle h, in motion. Further, there is provided at the end of the axle h the eccentrically
placed crank pin h¹ upon which the one end of the bar is revolubly engaged, whilst
the other end of the said bar is articulated to the arm of the lever whose other
arm k revolves upon a fixed pin a³ or the like. This arm & possesses a catch; the
wheel -sitting loosely on the piston rod 6' and provided with one or more hooks or
projections m (Figure 2) each engaging in a groove 62 in the spirally grooved piston
rod b¹, so that the piston rod rotates with the wheel and at the same time slides down
through the central opening in the said wheel.
The construction of the above described parts is obvious from the drawing. The

page_text: lever is preferably capable of being prolonged, so that the roller e can be adjusted
at a greater or less distance from the reservoir. This can be effected as shewn in the
drawing by constructing the lever d of two parts, one of which is provided with one
or more screws which engage. in slots or the like of the other part, so that the two
parts can be firmly united together by means of the screws. Moreover the roller e
is preferably constructed in two parts, namely, of a circular disc provided with
longitudinal grooves el e² and of a screw e passing through the hole 2 of a piece et
which can be screwed fast to the said disc. This piece et engages by means of the
sleeve placed around a pin d' on the frame or lever d, in the hole e¹ of the disc e.
It is obvious that the eccentricity of the roller can thus be increased or diminished
and the displacement of the piston can be correspondingly modified. The catch f
and the hook are pressed upon their respective spur wheels g or m by means of the
springs for respectively. As may be seen in Figures 1 to 3, the
spur wheel
consists of a circular disc which is cut wedge-shaped at the periphery and passes into
a corresponding slot in the catch f so that a friction catch is formed. The displacement
or revolution of the wheel g is effected in consequence of the angular position of the
catch in relation to the plane which passes through the respective axles of the catch
and of the wheel. By means of the device above described a very uniform and noiseless
revolution is obtained which always takes place in proportion to the amount of the
the oscillations of the lever. A counter-catch f arranged in like manner prevents
the wheel g from turning back when the lever is depressed. In the modification
illustrated in the drawing the wheel m consists of an ordinary toothed wheel in which
a catch engages; the same could, however, be constructed like the spur wheel above
described.
In consequence of the rigid connection of the wheel with the axle / this latter
revolves with the wheel. Thereby the bar i attached to the crank pin h¹ will be set
in motion and will thereby actuate the lever and cause it to oscillate to and fro
around the fixed pin a³. At each entire revolution of the wheel g, the bar i effects
one to and fro inotion and thus causes the lever also to effect the complete
oscillation, whereby the hook attached to the lever displaces the toothed wheel m
by one tooth. The spirally grooved piston rod bi passes through an opening in the
lid of the cylinder or reservoir provided with a screw thread.
When the spur
wheel m makes one revolution and consequently turns the piston rod once around
its axis, the piston will obviously be depressed by a corresponding amount. During
the entire revolution the projection m¹ of the disc m slides in the groove b² of the
piston rod, so that the latter can continue its motion downwards without interruption
whilst it is rotating with the wheel m. If the piston b has finally arrived at the
bottom of the cylinder, the uppermost groove of the piston rod will have already
passed the lower edge of the opening in the cylinder cover (see Figure 4) so that no
further displacement of the piston takes place but the same is only revolved upon
the same place. This arrangement prevents any breakage of the apparatus owing to
the continued operation of the lever d.
In order to return the piston when the lubricator is empty quickly from its lowest
position into the commencing position, the lid of the cylinder is so arranged that the
opening provided with a screw thread through which the piston rod projects is formed
of a fixed part at and of a lever p revolving upon a bolt or the like, which lever can
.either be placed in contact with the piston rod so that a portion of it which is screw-
threaded can engage in the spiral grooving of the said piston rod, or it can be pushed
aside so that the said piston rod can be freely drawn up through the increased opening
in the lid. In the closed position, that is the position in which it is in contact with
the piston rod, the lever p is held fast by means of a bolt 9 pressed fast against it.
This bolt is preferably formed of an angle lever fixed on a pivot, having its free end
arranged to engage under a projecting piece on the lid of the said reservoir.
Dated the 23rd day of August 1808

page_text: We, ISAK EKLUND, of Fredsgatan 22, Manufacturer, and JOHN FRÖLÉEN, 5,
Vasagatan, Merchant, both of Stockholm, in the Kingdom of Sweden, 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:
Our invention relates to an automatic lubricating device for use with solid
lubricants, and has for its purpose, firstly, to effect an easily regulatable and
permanent feed which will cease when the movable piston which serves to force the
lubricant out of the holder has reached the bottom of the holder, and secondly, to
provide a convenient method of detaching the lubricator from the machine, whenever
this is desirable for the purpose of re-filling, cleansing or repairs.
Referring to the drawing filed with the Provisional Specification in which the
device of our invention is illustrated,
Figure 1 shews the same in elevation.
Figure 2 is a corresponding plan.
Figure 3 shews the end elevation of the device and
Figure 4 is a section of the reservoir for the lubricant.
:
In this is placed a
The apparatus consists as usual of a cylindrical reservoir a.
mmovable piston b. The bottom of the reservoir is formed of a disc plate or the like c,
which latter connects below with the tubular prolongation c¹ screw-threaded as shewn,
which prolongation is adapted to be screwed into a bearing or other fixed part
supporting the part of the machinery to be lubricated. On the said support the
reservoir a is secured by means of the claw ¹ attached thereto, and a suitable spring
hook a² which can take hold below the annular flange or projection of the piece c, in
such a manner that the said reservoir can be easily detached and replaced again. In
the case of the lubricator illustrated in Figure 1, the piece c forms a flat bottom for
the reservoir a, but the former piece can also be hollowed out in the shape of a cup
(see Figure 4) so that this bottom piece holds a portion of the lubricant. Through
the said piece there passes a channel from the reservoir to the place to be lubricated.
The device for depressing the piston in the cylinder consists essentially of the
following parts, namely, a frame or lever d revoluble about an axle h, which piece d
rests by means of an eccentrically supported roller e upon a movable part of the
inachine, such as for instance, the revolving shaft in the bearing whereof the piece c
is screwed. This is so devised that the frame or lever d is set in oscillating motion
on account of the eccentric position of the roller. There is further provided a dog f
by means of which the lever aforesaid sets the spur wheel y, rigidly attached to the
axle h, in motion. Further, there is provided at the end of the axle h the
eccentrically placed crank pin upon which the one end of the bar is revolubly
engaged, whilst the other end of the said bar is articulated to the arm of the lever
whose other arın k¹ revolves upon a fixed pin a³ or the like. This arm k possesses a
catch; the wheel m sitting loosely on the piston rod band provided with one or
more hooks or projections m¹ (Figure 2) each engaging in a groove b² in the spirally
grooved piston rod b1, so that the piston rod rotates with the wheel and at the same
time slides down through the central opening in the said wheel.
The construction of the above described parts is obvious from the drawing. The
lever d is preferably capable of being prolonged, so that the rollere can be adjusted
at a greater or less distance from the reservoir. This can be effected as shewn in the
drawing by constructing the lever d of two parts, one of which is provided with one
or more screws which engage in slots or the like of the other part, so that the two

page_text: parts can be firmly united together by means of the screws.
Moreover the roller e is
preferably constructed in two parts, namely, of a circular disc provided with longi-
tudinal grooves el e² and of a screw e passing through the hole e of a piece et which
can be screwed fast to the said disc. This piece et engages by means of the sleeve e³
placed around a pin d¹ on the frame or lever d, in the hole e¹ of the disc e. It is
obvious that the eccentricity of the roller can thus be increased or diminished and the
displacement of the piston can be correspondingly modified. The catch f and the
hook are pressed upon their respective spur wheels g or m by means of the springs f¹
or respectively. As may be seen in Figures 1 to 3, the spur wheel g consists of a
circular disc which is cut wedge-shaped at the periphery and passes into a corresponding
slot in the catch f so that a friction catch is formed. The displacement or revolution
of the wheel g is effected in consequence of the angular position of the catch in rela-
tion to the plane which passes through the respective axles of the catch and of the
wheel. By means of the device above described a very uniform and noiseless revolu-
tion is obtained which always takes place in proportion to the amount of the oscillations
of the lever. A counter-catch f arranged in like manner prevents the wheel g from
turning back when the lever is depressed. In the modification illustrated in the
drawing the wheel m consists of an ordinary toothed wheel in which a catch engages;
the same could, however, be constructed like the spur wheel above described.
In consequence of the rigid connection of the wheel g with the axle / this latter
revolves with the wheel. Thereby the bar i attached to the crank pin ¹ will be set
in motion and will thereby actuate the lever ¹ and cause it to oscillate to and fro
around the fixed pin a³. At each entire revolution of the wheel g, the bar i effects
one two and fro motion and thus causes the lever k¹ also to effect the complete
oscillation, whereby the hook attached to the lever displaces the toothed wheel i by
one tooth. The spirally grooved piston rod b¹ passes through an opening in the lid
of the cylinder or reservoir provided with a screw thread. When the spur wheel m
makes one revolution and consequently turns the piston rod 61 once around its axis,
the piston will obviously be depressed by a corresponding amount. During the
entire revolution the projection m¹ of the disc m slides in the groove b² of the piston
rcd, so that the latter can continue its motion downwards without interruption whilst
it is rotating with the wheel m. If the piston b has finally arrived at the bottom of
the cylinder, the uppermost groove of the piston rod will have already passed the lower
edge of the opening in the cylinder cover (see Figure 4) so that no further displace-
ment of the piston takes place but the same is only revolved upon the same place.
This arrangement prevents any breakage of the apparatus owing to the continued
operation of the lever d.
In order to return the piston when the lubricator is empty quickly from its lowest
position into the commencing position, the lid of the cylinder is so arranged that the
matrix through which the piston rod projects is formed of a fixed part a without
screw-threading and of a lever p revolving upon a bolt or the like, which lever can
either be placed in contact with the piston rod so that a portion of its surface which
is screw-threaded can engage in the spiral grooving of the said piston rod, or it can
be pushed aside so that the said piston rod can be freely drawn up through the
increased opening in the lid. In the closed position, that is the position in which it
is in contact with the piston rod, the lever p is held fast by means of a bolt q pressed
fast against it. This bolt is preferably formed of an angle lever fixed on a pivot,
having its free end arranged to engage under a projecting piece on the lid of the
said reservoir.
. Having now particularly described and ascertained the nature of our said in-
vention and in what manner the same is to be performed, we declare that what we
claim is -
1. Automatic lubricating device for solid lubricants consisting of a frame or lever d
revoluble upon an axle h, said lever bearing an eccentrically supported roller e, which
roller can set the frame or lever d in oscillating motion by rolling over a movable
part of the machine, thereby causing the lever d to move a spur wheel g by means of

page_text: a catch, said wheel being firmly fixed upon the aforesaid axle h, so that a crank
pin h¹ fixed at the end of the axle h, and to which the one end of the link i is
revolubly attached, is set in revolving motion, whilst the other end of the link is
connected with the arm k of a double armed lever k k revoluble upon a fixed pivot a³
or the like; the other arm of the lever bearing a catch engaging in a wheel m
adjustably placed upon the piston rod b', said wlieel m being provided with one or
more hooks or projections m¹ which projections engage in longitudinal grooves b in
the piston rod, provided with screw threading and screwed into a threaded aperture
in the cover of the lubricator, so that the piston rod, together with the last named
spur wheel, will be revolved, whilst at the same time the rod is passing downwards
through the opening in the said wheel, so that the piston b will force the lubricant in
the vessel through a tube into the bottom piece connected with the lubricator.
2. In a lubricating device of the kind set forth in Claim 1, the construction of the
lever d in two parts, one of which is provided with one or more screws engaging. in
corresponding grooves in the other parts, in such a manner that the said parts may
be firmly connected by screwing up the screw heads against the edges of the grooves,
and the length of the lever can be adjusted at will.
3. In the lubricating apparatus set forth in Claim 1, the arrangement that the
uppermost screw-threading of the piston rod when the said rod has arrived at the
bottom of the lubricant container is beneath the lowermost edge of the opening in
the cover of the said container, and so that the apparatus cannot be pushed apart
even if the said lever à continues its notion.
4. The improved lubricator with screw-down piston and having a piston rod pro-
vided with a screw threading characterized essentially by the arrangement that the
matrix surrounding the piston rod is formed of a fixed part a' without screw threading
and a movable part p with screw threading; said movable part p constructed in the
form of a lever being held in contact with the piston rod aforesaid by means of a
bolt q, and in which the said lever p and consequently the piston rod can
be released by displacement of the bolt q so that the said piston can be
moved.
5. Automatic lubricator for solid lubricants in which the lever d which by means
of suitable intermediate organs imparts motion to a piston which forces out the
lubricant, can be brought into to and fro motion by means of an eccentrically placed
wheel e rotating upon a movable part of the machine.
6. In the mechanism set forth in Claim 1, the wheel e so constructed that a
screw dformning the pivot of the said wheel e and fixed upon the lever d, is held by
means of a sleeve e of the piece et projecting through a slot e¹ in the wheel, said part
being adjustable by means of a screw passing through the longitudinal slot e² in the
wheel e at different distances from the centre of the said wheel for the purpose of
varying the eccentricity of the said wheel.
7. In lubricators the container of which can be removed from the supports secured
to the bearing or the like, an easily detachable fastening consisting of a rigid hook a¹
and a spring hook a² secured to the part a, said hook a engaging under an annular
flange or projection of the part c, so that the removal and replacing of the lubricator
may be effected by simply displacing the same in the horizontal direction without any
twisting movement.
8. The improved automatic lubricator constructed and operating substantially as
described with reference to the accompanying drawings.
W. P. THOMPSON & Co.,
Of London, Liverpool, Manchester and Birmingham.
W. P. THOMPSON & Co.,
Of London, Liverpool, Manchester and Birmingham.