IMPROVEMENTS IN LUBRICATORS
Year: 1884

page_text: ..I MILTON SAMUEL CABELL of Quincy in the County of Adams and State of
Illinois, one of the United States of America Gentleman, do hereby declare the
nature of my 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:-
My present Invention relates to that class of oil cups or lubricators wherein the
lubricant is fed by gravity and delivered in drops and it consists in cer:ain
improvements as hereinafter described and pointed out in the claims.
In the accompanying Drawing
Figure 1 is a side elevation and
Fig. a sectional view of a lubricator containing an embodiment of my present
Invention as will hereinafter appear.
Fig. 3 shows by a like view a slight modification of the same. .
Similar letters of reference indicate like parts.
A is the oil cup or reservoir B the hollow stem provided with the tapered
portion b seat b¹ and vent opening 62. C is the valve stem whose tapered extremity
cooperates with the seat b'. These parts are arranged and combined for operation
substantially in the manner described in Letters Patent of the United States
granted to me under date of December 11, 1883 N° 289888.
To the end of the hollow stem B through which steam is admitted to vent the
cup, A, is attached a smaller tube or prolongation D which passes beyond the valve
seat a, and projects into the fitting E in line with the sight openings F. With
the device as above constructed the cup is vented through the stem B and the
oil permitted to trickle down the sides of the extension D from whence it is
delivered in the form of drops.
The fitting E into and through which the oil is delivered is T shape and the oil
cup is screwed or otherwise attached to it as shown in the Drawings. The
horizontal extensions or branches e¹ e' of the fitting are made tubular and each is
furnished with glass e secured in place by a screw cap or otherwise.
As thus constructed when the oil cup is applied the end D of the stem B is
brought in line with the opening through the extensions e¹ and the feeding can be
observed by looking through the glasses.
It has been found in practice that unless some means are provided for
maintaining or permitting a circulation of steam in the fitting the proper feeding
and delivery of the oil will not be obtained and to overcome this difficulty I have
provided a vent tube G for the fitting, either made integral with the fitting E as

page_text: shown or a separate piece of tubing inserted in or applied to the fitting and
extending from at or near the bottom to a point near the top of the fitting.
A valve H is applied to the fitting below the sight openings, and it is provided
with two passages, a large one h for the passage of the oil and a smaller opening h¹
for the vent.
By the use of this valve both passages in the fitting can be simultaneously
opened or closed to provide for shutting off the steam in case of accident or the
removal of the cup...
: -
If desired a separate valve I may be applied to the vent tube as shown in
dotted lines in Fig. 2 for closing or adjusting the vent tube and a separate valve
may in like manner be used for closing the oil passage.
In the modification shown in Fig. 3, the fitting E is made cylindrical for the
reception of the glass tube, e. and is cut away at several points as at t to form
sight openings through which the operation of the cup can be observed.
To facilitate the delivery of the oil in drops in full view of the sight openings
a cylindrical or tubular extension x is applied to the bottom of the oil cup below
the valve seat a. The prolongation D of the hollow stem B passes through this
tubular extension which latter assists in the passage of the oil down the
prolongation D and its. ultimate delivery in the form of drops.>
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 combination with the oil cup, projecting hollow spindle horizontal sight
tube and vertical delivery tube the vent tube opening into the delivery tube at
both top and bottom substantially as described.
2. In a lubricator such as described and in combination with the feeding devices
the fitting containing the sight openings and the vent tube the valve closing or
regulating the passage of steam through the vent tube substantially as described.
3. The combination with the oil cup, having the valve seat and opening at the
bottom thereof, of the hollow stem through which the cup is vented having the
elongated tip or extension projecting through the valve seat opening down into the
chamber of the fitting and the fitting having the glasses located in line with the
tip of the elongated extension whereby when the valve is raised slightly from its
seat the oil will escape through the valve seat opening, runs down the elongated
tip into the chamber of the fitting and escape from said tip in the form of drops
which are visible through the glasses substantially as described.
Dated the Seventh day of April 1884