An Improvement in Lubricating Apparatus.
Year: 1897

page_text: Date of Application, 8th Feb., 1897
Complete Specification Left, 8th Dec., 1897-Accepted, 8th Jan., 1898
PROVISIONAL SPECIFICATION.
An Improvement in Lubricating Apparatus.
We, CHARLES HIBBERT BERRY, Engineer, of 16 Haslinglon Street, Moss Side,
Manchester, and JOHN SNOWDON Junior, of Westferry Road, Millwall, in the
County of London, Manufacturer, do hereby declare the nature of this invention
to be as follows:-
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This invention relates to lubricating apparatus of the kind in which lubricant
of a more or less solid character is forced under pressure through suitable ducts
leading to the bearings and parts to be lubricated. The pressure is usually im-
parted by a piston slowly advanced in a cylinder by worm gearing worked by
ratchet and pawl or other suitable connections from the engine or machine to
which the lubricating apparatus is applied. When the piston has to be withdrawn
in order to refill the cylinder with lubricant, the pressure in the ducts is necessarily
relieved for the time and the lubricant ceases to flow.
The object of the present invention is to provide against this cessation of flow
of lubricant, which is effected as follows:-
Two cylinders are arranged side by side, each fitted with its piston having a
screwed rod which works through the cap of the cylinder as a nut, this nut having
attached to it a worm wheel. Between the two worm wheels there is a lever
carrying a worm and a ratchet wheel or other gear by which the worm is caused
to revolve. By rocking this lever to the one side or the other the worm is made
to engage and drive the one or the other of the two worm wheels, whereby the
one or the other of the two pistons is caused to advance in its cylinder. Both
cylinders can communicate with the lubricating duct or ducts through a three
way cock, the plug of which is connected to the lever above mentioned, so that
when the lever is moved to cause one of the pistons to advance in its cylinder, the
plug of the cock is at the same time turned so as to put that cylinder in communi-
cation with the duct and to close the outlet from the other cylinder. The piston
of the latter can then be withdrawn and the cylinder can be recharged with
lubricant, while the other cylinder continues to supply the duct with lubricant
under pressure. By thus alternating the cylinders by the momentary movement
of the lever, there is no practical loss of pressure or cessation of flow of the
lubricant.
1 01
1007
ABEL & IMRAY,
Agents for the Applicants.

page_text: County of London, Manufacturer, 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 lubricating apparatus of the kind in which lubricant
of a more or less solid character is forced under pressure through suitable ducts
leading to the bearings and parts to be lubricated. The pressure is usually
imparted by a piston slowly advanced in a cylinder by worm gearing worked by.
ratchet and pawl or other suitable connections from the engine or machine to
which the lubricating apparatus as is applied. When the piston has to be with-
drawn in order to refill the cylinder with lubricant, the pressure in the ducts is
necessarily relieved for the time and the lubricant ceases to flow.
The object of the present invention is to provide against this cessation of flow.
of lubricant, which is effected as we shall describe referring to the accompanying
drawings, Fig. 1 being a side view partly sectional and Fig. 2 being an end view
also partly sectional of apparatus according to our invention for maintaining the
flow of lubricant.
Two cylinders A and A' are arranged side by side, each fitted with its piston
having a screwed rod which works through the cap of the cylinder as a nut, this
nut having attached to it a worm wheel B, B¹. Between the two worm wheels
there is a lever C carrying a worm D and a ratchet wheel E or other gear by which
the worm is caused to revolve. By rocking the lever C to the one side or the
other the worm D is made to engage and drive the one or the other of the two
worm wheels B or B¹, whereby the one or the other of the two pistons is caused
to advance in its cylinder A or A¹. Either cylinder can communicate with the
lubricating duct or ducts through a three-way cock F the plug of which is con-
nected to the lever C so that the lever is moved to cause one of the pistons to
advance in its cylinder A when the plug of the cock F is turned so as to put that
cylinder in communication with the duct and to close the outlet from the other
cylinder A¹. The piston of A' can then be withdrawn and the cylinder can be
recharged with lubricant, while the other cylinder A continues to supply the duct
with lubricant under pressure. By thus alternating the cylinders by the momen-
tary movement of the lever, there is no practical loss of pressure or cessation of
flow of the lubricant.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, we declare that what we
claim is:
Lubricating apparatus with duplicate pressure cylinders and a three way cock
arranged and operating substantially as described.
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