An Improvement in Lubricating Pumps.
Year: 1890

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COMPLETE SPECIFICATION.
An Improvement in Lubricating Pumps.
I CARL RITTER of Friedenstrasse No. 17 Altona in the Empire of Germany Machine
Maker 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 that class of lubricating pumps in which a plunger is
pressed into a cylinder containing the lubricating oil by means of a ratchet gear
operated by the machine so as to feed the oil to the slide box or to any other part of
the machine to be lubricated during the working of the machine. In this class of
lubricating pumps the movement of the plunger of the lubricator is generally caused
by a screw the head of which is toothed and revolved by a worm on the shaft of
the ratchet wheel.
The improvement consists in dispensing with the counter pawl necessary with the
gear of the lubricating pump and intended to prevent the return of the screw when
the ratchet driver moves free and employing in place thereof spiral tension springs
which are arranged underneath the fastening bolts of the covers of the journal boxes
of the shaft of the endless worm aforesaid.
The pressure of the springs prevents the return or reverse rotation of the worm,
and they are protected against bending or damage by arrangement in cavities in the
covers. The protected position is of importance as otherwise during the polishing
up or cleaning of the lubricating pump they may be easily bent and damaged.
As with this arrangement the springs do not occupy a special outer space like the
counter pawl in use heretofore, one may give the ratchet lever any desired position
around the ratchet wheel. The lubricator is therefore convenient for all cases and
may be started very easily.
The invention is represented in the drawings.
Fig. 1 is an elevation of the whole lubricating pump.
Fig. 2 is a side elevation of the upper part of the pump partly in section on a
larger scale.
Fig. 3 is a front elevation of said part also on a larger scale.
A is the piston, B the cylinder of the lubricating pump, T is the filling funnel for
the oil which passes into the cylinder after suitable respective adjustment of the
three way cock L. When the piston descends the oil is pressed through the tuber to
the locality to be lubricated. C is a ratchet disc which is intermittently rotated by the
friction pawl D and the lever H, operated from the machine and which operates
the screw S of the piston A by the worm m and the worm wheel p forming the head
of the screw and thereby presses the lubricating piston into the lower part of the
cylinder B filled with oil whereby the oil is forced towards the locality to be
lubricated.
In order that the ratchet gear CD mp may operate without counter pawl the spiral
springs are located underneath the heads of the bolts a within cavities in the two
covers of the journal boxes R and R' of the screw shaft m as seen by Figs. 2 and 3
which springs being tensioned by the bolts a tighten the covers in the journals of
the shaft m. Also with a long use of the lubricating pump the tightening remains
constant as the springs compensate for a long time for the wear of the brasses.
The arrangement of the springs in recesses in the covers as shown by Figs. 2 and 3
secures the springs against damage from outside.
Having now particularly described and ascertained the nature of this invention and
in what manner the same is to be performed I declare that what I claim is
The improvement in a lubricating pump with plunger, wormshaft, and ratchet gear

page_text: as set forth consisting in the combination there with of the spiral springs f arranged
underneath the fastening bolts in recesses in the covers of the journal boxes of the
worm shaft m for the purpose described.
Dated this 7th day of November 1890.
HERBERT & Co.,
18, Buckingham Street, Strand, London, W.C., Agents to Applicant.