Improvements in and connected with Mechanical Feed Lubricators.
Year: 1897

page_text: COMPLETE SPECIFICATION.
Improvements in and connected with Mechanical Feed Lubricators.
I, JACOB KLEIN of 8 and 9 South Parade, Manchester in the County of
Lancaster, 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:-
The mechanical feed lubricator which is the subject of the present invention is
illustrated in vertical longitudinal section by Figure 1 of the accompanying
drawings and will be hereinafter described with reference thereto.
The oil or other lubricant is forced to the part to be lubricated by means of the
ram A, working in the barrel B, having an outlet controlled by the back pressure
valve C. The ram is reciprocated by means of a crank or of an excentric D,
moving with the ratchet wheel E, which is rotated step by step by the pawl F,
on the swing arm G. Motion may be given to this swing arm from any con-
venient source of motion as is well understood and practised with other types of
mechanical feed lubricators.
In connection with the ram pump, and preferably above it, as shewn by the
drawing, I arrange a cistern or reservoir H, to contain the lubricant, and from
the cistern I provide an adjustable outlet leading to the interior of the glass tube J,
the lower end of which communicates by the passage K with the interior of the
ram cylinder. The object of the glass tube is to enable the attendant to
ascertain by inspection at what rate the lubricator is passing to the ram or pump,
so that he may adjust it if it should be running too fast or too slow. The glass
tube may be substituted for example by a closed chamber having tale windows
or by any other equivalent construction.
The means which it is preferred to employ for regulating the flow of the
lubricant are illustrated in Figure 1, and partially, on a larger scale by Figure 3.
They consist of the tapered valve W formed on the bottom of the stem L and
fitting upon a seating on the upper end of the outlet leading to the sight tube J.
The lower end of the stem is guided in the block M through which one or more
holes N, are formed to conduct the lubricant to the valve. A tube 0 is screwed
upon the block M, and carries at its upper end the returned flange 0, which forms
a rectangular cup in which fits smaller rectangular cup P which can be turned
in the flange cup. The bottoms of both cups are bored to form hit and miss
valves for replenishing the cistern. The stem L contained within the tube 0,
has a fast collar Q, between which and an abutment formed by the lower end of
the sleeve R, there is a spiral spring S, tending to force the valve upon its seating.
The sleeve R screws into the tube 0 and constitutes with the spring and
stem, the means whereby the supply of lubricant can be regulated. It has a flanged.
or enlarged head T, above which there is pivoted the handle U to the stem L.
The distance from the centre of the pivot to the side of the handle is less than the
distance to the end of the handle. Consequently, if the handle be lifted into the
vertical position indicated by the partial Figure 2, the stem and valve will be
lifted also, as shewn by Figure 3, and, if the handle be lowered into the position
shewn by Figure 1, thestem L will be lowered and the valve will be completely

page_text: closed. This is a very convenient arrangement because the position of the
handle U will indicate at a distance whether or not the apparatus is in effective
action, but it also enables the rate of feed to be set without any necessity for re-
adjustment every morning or whenever the apparatus is re-started after stopping.
To set the rate of feed, 'the handle is lifted as shewn by Figure 2, and the adjust-
ment is made by turning the head T. By the action of the screw on the
sleeve and within the tube, the sleeve is thus raised or lowered and, because of the
interconnection of the sleeve and stem L by the compressed spring S, the valve W
is also similarly raised or lowered and thus adjusted. Upon the cessation of
work or whenever it is desired to put the apparatus out of action, the handle U
"may be turned down, thereby permitting the compressed spring S to close the
valve. When the apparatus is to be re-started, the handle is again turned up
whereupon the feed is resumed at precisely the same rate as before.
To provide for wear, and to enable the apparatus to work effectively against
high pressure, I may modify the construction of the ram and cylinder as indicated
by the partial longitudin 1 section Figure 4, where the ram is shewn at the back
end of its stroke. A line X, is inserted into the back part of the cylinder with a
packing ring Y, between it and the inlet K. A port Z is also made through the
end of the ram so as to te capable, at the moment when the ram is in position
shewn, of putting the inle. K into communication with the interior of the cylinder.
Immediately after the co encement of the forward stroke, the body of the ram
closes the inlet K and it ains closed by the ram until the end of the return
stroke. Thus, only a very small part of the lubricant can be returned through
the inlet. Since the back stroke of the ram will have created a partial vacuum
in the cylinder, the momentary communication through the ran between the
inlet K and the cylinder, suffices for the passage of the lubricant which will have
accumulated during the double stroke.
The cistern may advantageously be made of glass and be held between the
flanges and V the joints being made tight by packing rings.
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 mechanical feed lubricator, appliances for effecting an adjustable and
visible supply of the lubricant to the ram or pump, constructed arranged and
operating substantially as herein before described with reference to the
accompanying drawings.
2. In a mechanical feed lubricator, the combination with the valve regulating
the supply of the lubricant to the ram or pump, of a spring tending to force the
valve upon its seating, an adjustable screw or sleeve for regulating the lift of the
valve, and a handle which in one position holds the valve at the limit of its lift
and in another position holds it on its seating, constructed and arranged sul
stantially as herein before described with reference to the accompanying
drawings.
3. A mechanical feed lubricator having its supply of lubricant to the pump
or ram controlled and effected substantially as and by the means hereinbefore
described with reference to the accompanying drawings.
Dated this 4th day of October A.D. 1897.
W. E. HEYS & SON,
Agents for the Applicant.