Improvements in or relating to Lubricators for Grease.
Year: 1895

page_text: Date of Application, 10th Apr., 1895-Accepted, 31st Aug., 1895
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Improvements in or relating to Lubricators for Grease.
We, ANTONIO GIUGLARDI and EUGENIO SCARTEZZINI both of Scartezzini
& Co. Bankers, Genoa in the Kingdom of Italy, 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 :-
Lubrication according to this invention is effected by means of a spring-pressed
piston which compresses the grease on which it acts within a vessel or cylinder.
This vessel is similar to those now used for lubrication with oil; all that is needed
is to substitute, for the present cover, a screwed socket or tube whereon is screwed
the new cover, pierced for the passage of the compressor-piston-rod. This rod,
besides acting as a guide, serves as an indicator of the quantity of grease remaining
beneath the piston. The coiled spring determining the pressure upon the piston
has a nearly uniform tension. The delivery of the grease for lubrication is
regulated by means of a clack or valve as hereinafter mentioned.
The consumption of grease being greatly economised, there will be no necessity
for frequent fresh supplies; and in any case it will not be necessary to unscrew the
cover and take out the piston, inasmuch as the grease can be injected into the
apparatus by the aid of a pump or injector applied to a small orifice formed in
the wall of the tube or cylinder as hereinafter explained.
The invention will be best understood by reference to the accompanying drawings
in which
Figure 1 is a vertical section and
Figure 2 a front elevation of the lubricator ;
Figure 3 is a vertical section on a line at right angles to that on which Figure 1
is taken and
Figure 4 is a plan as seen from above.
Throughout the drawings the same letters of reference indicate the same parts.
The piston-rod is indicated by a; while a' is the cover screwed on the socket or
extension of the vessel; c is the vessel or cylinder containing the piston f¹
actuated in its function of compressor by the coiled spring ; g is the grease;
n is the small pipe or conduit through which the grease escapes from the
lubricator under the pressure exerted upon it by the piston finfluenced by the
springs the clack or valve gradually shutting or opening the pipe or conduit for
the emission of grease; m the coiled spring acting on the piston to press it
upon the grease below (when the vessel c is filled); na spring intended to maintain
the clack or valve firmly in place; and, lastly, a hole bored through the socket
or extension b of the vessel c, to allow of a supply of grease being introduced
beneath the piston without necessitating the removal of the cover a¹.
WORKING.
The clack or valve & heino closed and the vessel c being supplied with grease g
The clack or valve • being closed and the vessel c being supplied with grease g
either by unscrewing the cover a¹ or by injection through the orifice, after the
piston has been raised and through the pressure of the coiled spring m (which
surrounds the piston rod) the valve s being opened, the grease 9 melted by the
beat generated by the rotating shaft, flows gently out of the small conduit n' to
perform its functions as a lubricant in the best and most suitable way wherever
it may be required. The notch cut in the face of the valves enables it to

page_text: be turned and also serves to indicate the position of its closure in the small
emission-conduit n'.
The operation of feeding the lubricator with grease through the small orifice f
without removal of the cover a' is effected by elevating the piston f¹ until it has
passed above the level of the orifice f; the necessary quantity of grease is then
introduced (beneath the piston) by the aid of an injector or pump. In order to
support the piston above the orifice, during this operation, a loose pin is passed
through an orifice in the piston-rod, and rests on the cap. When the operation is
completed, this loose pin is drawn out and the piston is left to the influence of the
coiled spring m.
The simplicity of the device makes it readily adaptable either to locomotives,
new or old, or to other machines.
Its installation requires only a minimum of outlay. Furthermore, its auto-
maticity and perfect regulation assure uniform lubrication throughout the whole
period of running.
This system of lubrication is therefore automatic and controllable.
It is almost needless to remark that in practice parts such as the valve & and
spring may be dispensed with and replaced by the other equivalent devices
provided only that the end in view be attained.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed, we declare that what we
claim is :-
1. A lubricating device for grease for locomotives and other machines
characterized by the arrangement of a pressure-piston acting on the grease and
operated on by a spring, in a vessel by means of a screwed socket or extension
whereon is screwed a cap or cover perforated in the centre for the passage of
the piston-rod substantially as described and illustrated in the accompanying
drawings.
2. In a lubricating device for grease such as described in Claim 1 an orifice in
the cover by the aid of which and an injector or pump the supply of grease can be
renewed while at work without having to remove the cover substantially as
described and illustrated in the accompanying drawings.
3. In a lubricating device for grease such as described in Claim 1 the arrange-
ment of a clack or valve held by a spring in a small conduit of emission whereby
the flow of grease can be regulated and controlled while a notch or equivalent
formed in or upon the valve indicates the throttling position of the latter in the
emission conduit substantially as described and illustrated in this Specification and
the accompanying drawings.
4. The combination and arrangement of parts constituting the complete
lubricator for grease substantially as described and illustrated in the accompanying
drawings.
Dated this 10th do of Anvil 1905
BOULT & WADE,
Agents for the Applicants.