IMPROVEMENTS IN LUBRICATORS
Year: 1884

page_text: I, ARNOLD BUDENBERG, of Southgate, Manchester, in the County of Lancaster,
Mechanical Engineer, do horeby declare the nature of the said Invention for
"IMPROVEMENTS IN LUBRICATORS," a communication to me from abroad by William
Noll, of Minden, in the German Empire to be as follows:-
This invention relates to lubricators for semi-solid or consistent fat and has for
its object the gradual and automatic discharge of the lubricant.
For this purpose I make the body or receptacle of the lubricator cylindrical as
usual, either of metal, glass or other suitable material and provide it with a heavy
solid piston which exerts on the grease a constant pressure so as to slowly force it
out of the lower opening. The piston may either form a solid cylinder provided
with a suitable packing and projecting through the top opening of the receptacle,
or it may form a heavy disc provided with a piston rod projecting through the lid
of the receptacle.
In the latter case I place above the heavy piston, which rests on the grease,
a light piston fitting tightly against the walls of the receptacle, and provided with
a hollow piston rod surrounding the piston rod of the heavy piston.
A screw thread is cut into the outer piston rod, and a corresponding screw
thread into the lid of the receptacle, so that on turning the outer piston rod by
means of a knob or serrated cup fixed to its upper end, the hollow piston rod
together with the piston is forced-down further into the receptacle, and grease
forced out through the lower orifice of the same. The automatic action of the -
beavy piston may thus be periodically assisted by a turn of the hollow piston rod.
If the body or receptacle of the lubricator is made of glass, it may be surrounded
by a metallic cage adapted to protect the glass while allowing it to be seen through
suitable openings.
Dated this 16th day of Wah 1001.

page_text: I, ARNOLD BUDENBERG, of Southgate, Manchester in the County of Lancaster,
Mechanical Engineer, do hereby declare the nature of said Invention for "IMPROVE-
MENTS IN LUBRICATORS," a communication to me from abroad by William Noll,
of Minden in the German Empire, 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 for supplying shafts, slides, loose pulleys
and other moving parts with semisolid or consistent lubricants, and more par-
ticularly to that class, in which gravity is employed for forcing the grease out of
the orifice of the lubricator.
The object of the invention is partly to simplify and cheapen the construction,
and partly to supplement the automatic gravity feed with means for forcing out
the grease by hand when desired.
For this purpose I make the body or receptacle of the lubricator cylindrical, as
usual, either of metal, glass or other suitable material, or of metal and glass.
combined, and provide it with a heavy solid piston which exerts on the grease
a constant pressure, so as to slowly force it out of the lower opening. The piston
may either form a solid cylinder provided with a suitable packing and projecting
through the top opening of the receptacle, or it may form a heavy disc provided
with a piston rod projecting through the lid of the receptacle.
In the latter case I place above the heavy piston which rests on the grease,
a light piston fitting tightly against the walls of the receptacle, and provided with
a hollow piston rod surrounding the piston rod of the heavy piston.
A screw thread is cut into the outer piston rod, to which the lid of the receptacle
serves as a nut, so that the hollow piston rod, together with the heavy piston, may
be forced further down into the receptacle, by turning the said piston rod, and
thereby grease pressed out through the lower orifice of the receptacle.
The automatic action of the heavy piston may thus be periodically assisted by
turning the hollow piston rod, for which purpose a knob, serrated cup or other
suitable holder is formed on the top of the piston rod or secured to the same.
If the body or receptacle of the lubricator is made of glass, it is preferably
protected by a metallic cage which allows the glass to be seen through suitable
openings.
In the accompanying drawings Fig. 1 is a vertical section of a small lubricator
with a heavy cylindrical piston.
Fig. 2 is an elevation and Fig. 3 a vertical section of a large lubricator with two
pistons.
a is an open glass tube or grease receptacle protected by a metallic cage band
containing a cylindrical piston c of lead, provided with leather packing d.
A is the cylindrical body or grease receptacle of a large lubricator made of brass
and provided with a conical discharge tube A¹ for fitting the lubricator to the top
of a plummer-block, or other part to be lubricated. B is a heavy solid piston
fitting with slight clearance into the receptacle A and provided with a piston
rod B. C is the second piston fitted into the receptacle A by means of leather
packing.
This light piston is secured to the lower end of the hollow piston rod C¹,
which forms a screw spindle passing through the centre of the lid D and carrying
a cup C³ by means of which the spindle C' may be turned in the lid D. A clearance

page_text: is left between the piston rod B¹ and the inside of the spindle C¹, in order to
render the motion of the piston B as easy as possible.
The vessel A having been filled with lubricant, the pistons are put in, and the
vessel is closed by screwing on the lid D. The weight of the piston B will then
slowly force out lubricant through the discharge pipe A¹. If the piston B ceases
to act after a certain time, or if its action is insufficient, the piston C is forced
down upon the piston B by turning the spindle C¹. As compared with the
lubricators in which the automatic piston is made hollow and filled with shot, my
lubricator acting by the weight of a solid piston has the advantage of greater
simplicity.
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:
1. In a lubricator, the combination of an open glass tube, with a solid metallic
piston fitting into the said glass tube and adapted to force out the grease through
the discharge opening by the weight of the piston, substantially as hereinbefore
described.
2. The combination with the body of a lubricator and a heavy piston adapted
to force out the lubricant by the weight of the piston, of an independent supple-
mentary piston placed above the heavy piston and fitting tightly into the body of
the lubricator, and means for pressing the supplementary piston down upon the
heavy piston, when desired, substantially as herein before described.
3. The combination of receptacle A, with heavy piston B and piston rod B¹,
supplementary piston C with hollow piston rod C₁ serving as screw spindle and
lid D, substantially as described and illustrated and for the purpose specified.
Dated this 12th day of November 1884.