Year: 1893

page_text: Date of Application, 16th Oct., 1893-Accepted, 16th Dec., 1893
I, RICHARD STARKLOFF, of Deuben, Province of Saxony, Empire of Germany,
Foreman 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 :-
My invention relates to improvements in automatic greasers, whereby, by means
of frictional resistance to the pressure of the customary weight or spring on the
piston, a much better and more equal greasing action is obtained than has
hitherto been the case, and, consequently, more economy in the effective use of the
grease.
I will explain my invention with reference to the accompanying drawing, in
which:-
Fig. 1 is a vertical section.
Fig. 2 is a part view and part vertical section.
Fig. 3 is a plan view of the piston from underneath.
Fig. 4 is a plan view of the piston from above.
The greaser consists of the cylindrical shell a in which is the piston b, packed
with a leather disc c and worked by pressure from a spring d attached to the cover
plate e. This spring d is wound round a tube f connecting the piston with the
plate g.
The piston rod h, which is threaded at its upper end for receipt of a
wing-nut h, and provided at its lower end with a small conical or bevelled piece or
plate i, is passed through this tube f.
Attached to the piston are three horizontally adjustable pieces or segments k
whose inner edges form a circular opening corresponding to the size of the plate i
and are bevelled so as to engage with the bevelled outer edges of the said plate i.
By turning the set-screw ¹ so as to tighten the plate i, it will be evident that the
segments can be pressed outwards so as to become wedged against the inside of the
shell a. By this means the piston can be made stationary at any point, and so fast,
that the spring pressure cannot move it.
In order to equalize the movement as the spring expands and exerts less
pressure on the piston, the shell is made proportionately wider towards the
bottom.
From the foregoing, it will be clear that the pressure of the piston on the grease
can be regulated as finely as required by means of the friction of the aforementioned
segments & against the inside of the shell, and, as the automatic action of the piston
can be stopped altogether by the set-screw when the machinery is not in motion, it
will also be evident that there is greater economy in the quantity of grease used.
In order to fill the greaser, the piston can be drawn to its highest position and
wedged there until the operation is finished when the segments k can be slackened
correspondingly to the movement required.
Having now particularly described and ascertained the nature of my said inven-
tion and the manner in which same is to be performed, I declare that what I
claim is:-
1. Automatic greaser in which the piston b in the shell is provided with
segmental, horizontally adjustable, pieces in combination with piston rod
provided at its upper end with thread and wing nut h', and, at its lower end, with a
plate i, whose bevelled outer edges are made to engage with the bevelled inner edges
of said segmental pieces k so as to force same tightly against the inside of the shell
substantially as described and shown in the drawing.

page_text: 2. In an automatic greaser, the piston 6 having segments which can be forced
against the inside of the shell substantially as described and shown in the
drawing.
3. In an automatic greaser, the piston rod
and wing nut h³, and, at its lower end, with
forth.
Dated this 16th day of October 1893.
provided at its upper end with thread
bevelled plate i substantially as set
J. E. EVANS-JACKSON & Co.,
Agents for the Applicant.