's Patent Lubricators.
Year: 1884

page_text: as Stauffer's Patent Lubricators.
FRANK HENRY JULIUS TRIER, Civil Engineer of 19 Great George Street,
Westminster London, S.W. & MATTHEW PLETTS, Mechanic of N° 16 Colls Road,
Peckham, London, S.E do hereby declare the nature of our invention for
"IMPROVEMENTS IN LUBRICATORS," MORE ESPECIALLY IN THOSE KNOWN AS
STAUFFERS PATENT LUBRICATORS to be as follows:-
Upon the shank of the Lubricator (known as Stauffer's) we place a plate,
which we call the cover, which may be either a simple disc, flat or otherwise, or
with a rim round its edge, or of any other convenient form consistent with its
fulfilling the intention of closing the open side or end of the cap of the Lubricator.
One face of this cover, or the edge of the rim, if made with a rim, is brought
into contact with the open end of the Lubricator screw cap, & is kept in contact
therewith by a spiral or other spring, or by any suitable elastic substance: the
object being to prevent the access of dust to the screw thread cut in the interior of
tho said Lubricator cap. Or we dispense with the spring & provide the rim of the
cover with a thread into which the lubricator cap is screwed; or we cut a thread
on the shank of the lubricator, preferably of a different pitch to that on the
interior of the lubricator cap. The hole in the cover is provided with a corre-
sponding thread & is screwed onto the shank.
By screwing the cover it is brought into contact with the open end of the
lubricator cap, not only closing it, but locking it in the fashion of a lock nut.
To obtain contact between the open end of the cap & the cover we sometimes
provide the latter with two or more spring catches which catch into suitable
recesses in the cap or onto a rim turned on the open end of the latter.
We sometimes prefer to make the cover in the shape of an inverted cap into
which the lubricator cap descends or enters. To prevent the entry of dust the
cylindrical cover is made to fit the cap closely or is provided with a recess con-
taining felt or other suitable material. The latter can also be contained in an
arrangement similar to a stuffing box.
Besides the above mentioned method of locking the lubricator cap by means of
jamming it against the cover, we adopt other means of effecting a more absolute
lock where the lubricator is subject to vibrations or tremor, which latter have a
tendency to cause the screwing or unscrewing of the cap.

page_text: We make the cover with one or more than one projection which enter into
corresponding notches in the circumference of the cap; or the projections may be
on the cap & the notches in the cover.
The shape of these projections & corresponding notches is either such, that the
cap can be turned by hand, at the same time that the pressure of the spring or
elastic substance under the cover is sufficiently strong to arrest any tendency to
turn arrising from vibration;-or the projections & notches are made of such a
form, that the cover must be pressed down before the cap can be turned.
Instead of being made with projections & notches, the cover can be made with a
turned up edge forming one or more than one side of a polygon, the cap of the
lubricator having a correspondingly shaped rim.
The cover itself is held from turning on the shank by means of a flat or a tongue
or other convenient means.
Another mode of keeping the cover in contact with the open end of the
lubricator cap is by means of a bayonet catch, which we sometimes adopt.
To prevent the lubricant in the lubricator from emptying itsself in consequence of
vibration we sometimes form a tube on the shank in the interior of the lubricator
& form a corresponding recess in the lubricator cap. The tube in question is a
prolongation of the hole through which the lubricant has to pass beyond the point
at which it can escape by the action of gravitation or vibration.
In cases where the lubricator shank is increased in diameter the dustcover
which is held up by a spring or is threaded so as at the same time to form a lock-
nut or is made substantially in any of the other above mentioned ways, the cover
takes the shape of a ring more than that of a disc.

page_text: as Stauffer's Patent Lubricators.
I, FRANK HENRY JULIUS TRIER Civil Engineer of 19 Great George Street
Westminster in the County of Middlesex, & MATTHEW PLETTS, Mechanic, of
16 Colls Road Peckham in the County of Surrey, do hereby declare the nature
of our invention for IMPROVEMENTS IN LUBRICATORS and in what manner the
same is to be performed, to be particularly described and ascertained in and by
the following statement :-
The Lubricators shown in Figs. 1, 2, 3, 4 & 6 (Figs. 5 & 7 only show the caps)
of the accompanying drawing are of the type known as Stauffers & consist of a
shank & which is fixed onto the bearing to be lubricated and a cap c (shown in
section in Fig. 1) the interior of which is threaded and is screwed onto the threaded
flange e of the shank d.
By screwing the cap filled with the lubricating grease the latter is forced through
the hole in the shank, into the bearing.
It will be seen that the interior of the cap becomes exposed as it passes the
flange of the shank and it is the object of our invention to close the open end of
the cap by suitable means in order to prevent the entry of dirt & when required to
provide a simple and effectual method of preventing the cap unscrewing by reason
of the vibration of the machinery to which it is attached. Upon the shank of the
lubricator we place a cover, which may be either a simple disc p (as in Fig. 1), flat
or otherwise, or with a rim round its edge as in Figs. 2, 3, 5, 6, 7. One face of
this cover is brought into contact with the open end of the lubricator cap. In
Figs. 1 & 2 the cover is kept in contact the spiral spring 8, the spring being closed
as the cap forces the cover down. In Fig. 6 the spring is coiled flat inside the
cover and is fixed to the cover and to the lubricator shank; when screwing down
the cap the spring is opened and its tendency to close keeps the cover in contact
with the cap.
The cover will not only keep the open end of the cap closed, but will also by
reason of the pressure prevent the latter from turning through vibration of the
machinery to which the lubricator is fixed. The friction between the cover and
the cap can be augmented by making the metal of the former softer than of the
latter or by interposing a layer of leather or other suitable material between the
cover and the cap; or the cover may be entirely made of leather or other similar
material. When the cover is made use of to prevent the cap from turning the
former is prevented from turning on the shank by making the latter with a flat or
a tongue corresponding to a flat or a groove in the central hole of the cover; or the
hole and the shank are made hexagonal.
In Fig. 2. the cover is formed with projections engaging into corresponding
notches in the rin of the lubricator cap and the cover is prevented from turning
on the shank as described. The projections on the cover may be formed so that
the cap can be readily turned by hand in either direction, at the same tine
that the pressure of the spring is sufficiently strong to arrest any tendency to turn

page_text: caused by vibration. Or the projections are shaped so that the cover must be
pressed down before or whilst turning it in order to disengage the projections from
the notches in the cap. The projections may also be made on the cap and the
notches in the cover.
In Fig. 3. the cover has a turned up rim threaded inside to engage with a thread
cut on the outside of the cap; but by making the outside diameter of the rim
about equal to the inside diameter of the cap the former can be made to engage
with the inside thread of the latter. In Fig. 5. the cover is shown attached to the
cap by a bayonet catch; in Fig. 7. the cover is made in the same way as the covers
used for closing the glasses of telescopes etc.
In Fig. 4. the open end of the cap is closed by a plate with a central threaded
hole, and screwed onto the lubricator shank.
By turning the plate on the shank it is brought into contact with the cap and
by making the thread on the shank of a different or the opposite pitch to the
thread in the cap, the plate can be made to act as a locknut to the cap. The
methods shown of closing and locking the cap of a Stauffer Lubricator apply
equally with slight modifications where the diameter of the shank & approaches
more nearly the diameter of the flange e or where the shank forms a part of the
machinery.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed, we declare that what
we claim is
1.) The combination with the cap of a Stauffer Lubricator of a cover for the
purpose of closing its open end.
2.) The employment of the said cover for the purpose of arresting and locking
the cap.
Substantially as described and shown with reference to the accompanying
drawings.
Dated this fourth day of Santamban 7007