Year: 1898

page_text: Date of Application, 31st Aug., 1898-Accepted, 1st Oct., 1898
A communication by HEINRICH FRIEDRICH LOOS, of 3, Petzoldstrasse, Nuremberg,
in the Empire of Germany, Manufacturer.
I, WILLIAM PHILLIPS THOMPSON, F.C.S., M.I.M.E., of the Agency for Foreign
Patent Solicitors, 6, Lord Street, Liverpool, and 6, Bank Street, Manchester, both
in the County of Lancaster, 118, New Street, Birmingham, in the County of
Warwick, and 322, High Holborn, in the County of Middlesex, Civil 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:—
This invention has for its object an improved lubricator having a spring cap or
cover. Two forms of construction of it are shown in the accompanying drawings
in which
Figure 1 is a vertical section of the lubricator;
Figure 2 a side view of the cap and
Figure 3 a lateral elevation;
Figure 4 a vertical section of a modification;
Figure 5 an elevation of the cap and
Figure 6 another vertical section.
This improved lubricator which is mainly intended for use on cycles and the
like in which the lubricator has to share in the rotation, is so arranged that the cap
or cover 2 which has a tubular part or projection 3 telescopically adjustable in the
actual lubricant container 1, forms an easily opened but yet quite secure pro-
tection against the penetration of dust and escape of the oil.
In the form of construction shown in Figures 1-3 this tubular projection 3 is
made to have a spring action by cutting slits in it at various places, and has an
aperture o serving for the pouring in of the lubricant. The elastic cover thus
formed in consequence of its spring action is held fast after rotation or adjust-
ment in any position of the lubricator 1 and admits consequently of a completely
tight joint and also the uncovering of the lubricating opening. The possibility
of a complete removal is however prevented by the tube end being provided with
a thickened edge v which when the cap is displaced or drawn up engages the edge r
of the part 1.
The second form of construction shown in Figures 4, 5 and 6 has a spring cap or
casing of similar form to the one previously described but having in the interior of
the tubular projection 3 an annular projection against which bears a spiral
spring 4 the other end of which rests against the bottom surface f of the box. By
the pressure of this spring the edge of the cap or cover is normally pressed up
in the interior of the lubricator, which is made of just sufficient width by a con-
striction m to prevent the cap being moved until its spring ends are pressed
together and thus sufficiently narrowed. As long as this narrowing has not taken
place the lubricant opening o in the cap which is pressed down is still inaccessible
D
037

page_text: from the outside, but on the diameter of the cap being narrowed the tension of
the spring causes such a displacement that the insertion of the lubricant can take
place (see Figure 4). This uncovering of the lubricator aperture which is necessary
for the lubrication takes place by means of a ring R located between the bottom
of the case f and the constriction m, the spring end of the cap entering into the
open centre of this ring R and being to a certain extent compressed when the cap
is pressed down out of its closed position. Left to itself the now contracted cap
moves up under the impulse of the spring and carries the ring B up with it into
the ordinary closing position (Figure 6) in which position the ring R is stopped
by the constriction m whilst the cap continues its upward movement under the
pressure of the spring out of the ring and passes the constriction. m (Figure 4).
The opening o in the cap is thus free for the pouring in of the lubricant. The
re-establishment of the joint is effected by overcoming the pressure of the spring
by simply pressing down the cap into the position in which the lower end of the
cap again snaps under the projection m of the case.
Having now particularly described and ascertained the nature of the said inven-
tion, and in what manner the same is to be performed, as communicated to me by
my foreign correspondent, I declare that what I claim is:-
1. A lubricator having a spring cap or cover provided with a filling opening (0)
and a thickened end (v) and slotted in several places to give it a spring action,
substantially as hereinbefore set forth.
2. A form of construction of the lubricator hereinbefore described, characterised
by the combination with the spring cap of a pressure spring (4) and a ring (R)
located in the lubricant chamber, substantially as and for the purpose set forth.
Dated this 30th day of August 1898.
WM. P. THOMPSON & Co.,
. Agents.