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Патент USA US2120681

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June i4, 1938.
Filed Dec. 13, 1954
Q7* .1
Patented June 14, 1938
Elmer Ryder, Elgin, Ill.
Application December 13, 1934, Serial No. 757,264
2 Claims.
The present invention relates to a drain de
vice and more particularly to a novel drain at
tachment for crank cases andthe like from
which the lubricant is periodically drained.
Among the objects of the present invention is
the provision of a novel attachment for drain
ing the lubricant from the base of a crank case
or sump without the necessity of crawling below
the engine to remove the drain plug. The novel
il) drain mechanism is operable from any accessible
and convenient point, preferably fromr below the
hood, for completely draining the crank case.
A further object of the present invention is
the provision of a novel valve mechanism for a
drain port which is so constructed as to prevent
the valve from clogging and remaining open.
A still further object is to provide a novel
operating means for the drain mechanism, and a
novel locking means for maintaining the mecha
20 nism in open position.
Another object of the present invention is the
provision of a novel adapter or bushing whereby
the drain device may be attached to crank cases
and the like having various size drain openings.
Further objects are to provide a construction
of maximum simplicity, eñiciency, economy and
ease of assembly and operation, and Such further
objects, advantages and capabilities as will later
more fully appear and are inherently possessed
The invention further resides in the construc
tion, combination and arrangement of parts illus
trated in the accompanying drawing, and While I
have shown therein a preferred embodiment, it
is to be understood that the same is susceptible of
modification and change, and comprehends other
details, arrangements of parts, features and con
structions without departing from the spirit of
the invention.
In the drawing:
Fig. 1 is a view in end elevation of an internal
combustion engine with the drain attachment
mounted thereon.
Fig. 2 is a view in vertical cross section through
45 the drain and a portion of the crank case.
Fig, 3 is a view in side elevation of the drain,
but disclosing in vertical cross section, an adapter
or bushing therefor.
Fig. 4 is a View in perspective'of the adapter.
Fig. 5 is a view, part in side elevation and part
in vertical cross section, of an operating button
or handle and the mounting therefor.
Referring more particularly to the disclosure
in the drawing, the novel invention is shown as
55 applied to an internal combustion engine I hav
(Cl. 711-502)
ing a crank case or sump 2 for the lubricant
supply. This crank case or sump is provided with
the usual drain outlet 3 generally closed by a
suitable drain plug which has to be manually re
moved. Such manual removal requires the oper Ul
ator or mechanic to get under the automobile in
order to unscrew the plug and results in the
soiling of his clothing and hands with the drained
lubricant aswell as from the oil, dirt, etc., col
lected on the bottom of the automobile.
The present attachment replaces the usual
drain plug and comprises a nipple or coupling 4
having a threaded stud 5 adapted to be threaded
into the drain outlet 3. Below this stud is pro
vided a peripheral shoulder 6 adapted when
the nipple Il is threaded into the crank- case, to
clamp therebetween ay gasket or washer 'I for
providing a liquid-tight seal. The opening or
passage 8 in the stud communicates with a port
or passage 9 in the coupling or nipple 4, the
latter in turn communicating with an` offset dis
charge Ill for the lubricant to be drained.
The nipple or coupling is provided with a lon
gitudinally extending opening II communicating
with the opening 9 but of greater diameter or
cross section so as to provide an annular shoulder
forming a valve seat I2. Within the nipple or
coupling is mounted a slidable valve member I3
provided with a conical valve seat I4 adapted to
form a line Contact with the valve seat I2 and to 30
close off the port or passage 9, and a spring Ida.
In order to retract or release the valve mem
ber I3, the body thereof is connected at I5 to a
movable wire or element I6 of a Bowden wire I1.
The opposite end of the movable wire I6 is at 35
tached at I8 to a plunger I9 slidable in a sleeve
20 m'ounted upon a bracket 2l by means of a
shoulder 22 and lock-nut 23. The bracket in
` turn is suitably mounted at 24 on an accessible
part of the engine I. The outer flexible sheath
>$25 of the wire il has its one end rigidly held in
a bushing 26 in the coupling or nipple II by means
of a set screw 2ï, while the opposite end is also
held in the sleeve 20 by means of an indenta
tion 28.
When it is desired to drain the crank case 2,
all that is required is that the operator raise the
hood and lift the button or handle 29 of the
plunger I9. This plunger will automatically be
held in a raised position against the tension of
the spring Mr, by means of a leaf Spring 30 pro
vided with a slot or opening 3l and a trigger
part 32. This spring will bind against the plung
er so as to snub it and maintain it in raised or
open position, until released by raising the trigger.
In order to anchor this spring in place, an end
33 thereof is clamped between the bracket 2l and
shoulder 22.
As the size of drain opening varies in different
engines, the invention comprehends the use of
an adapter 34.
This adapter is in the form of
desired or suitable place under the hood or other
wise placed on the automobile.
Another novel feature of the invention is that
the valve may be momentarily opened to drain
out any condensation of Water accumulating in 5
the vvintertime and Which would collect in the
a threaded bushing interiorly threaded at 35 so
bottom of the crank case.
as to be threaded onto or receive the threaded
foreign particles may be drained off Without
disturbing the upper strata of relatively clean
Having thus disclosed the invention, I claim:
stud 5, and is provided with exterior threads 36
Also the residue of
adapted to be received in the drain outlet 3. The
stud 5 and adapter 34 permit the attachment to
be ñtted to any make of engine.
1. A device for retaining the plunger or the
From the above description and the disclosure Y like in position, comprising a sleeve mounted in
in the drawing, it Will be readily apparent thaty fixed position, a plunger slidable therethrough, a
the invention comprehends a novel drain, which leaf spring anchored at one end upon the sleeve,
although disclosed as mounted on a crank case Vthe spring being bent upon itself and provided
of an internal combustion engine, has a much with a trigger part and an opening for the recep
Wider field of use for draining fluid Wherever the tion .of the plunger, the plunger and spring being
outlet or discharge is so located as to be vprac
so constructed and arranged that in one posi
20 tically inaccessible or Where diñiculty is had Vin
tion of the spring the plunger is freely slidable
securing access thereto. Also the drain may be -through the opening and in its other position the
ina side Wall'rather than in the base or bottom, spring is Vadapted to bind against and lock the
as disclosed, or Aotherwise positioned.
plunger in an adjusted position, the trigger part
It is a Well known fact that the residue in the being'adapted to move the spring to its first
base or bottom of the crank case contains par
‘mentioned position to `release the plunger.
ticles of carbon, metallic particles from the Worn
Y 2. A device for locking a plunger of a drain
surfaces, dirt and other foreign matter which attachment of a crank caseV including a valve
would tend to clog an ordinary valve construc
structure actuated by the plunger for draining
tion and prevent the parts from forming a liquid
the lubricant therefrom, comprising a sleeve, a
tight seal. By reason of the present construction plunger capable of relative movement with re 30
in which the shoulder l2 forms a relatively sharp spect to said sleeve, and a leaf spring anchored
seat and line contact with the valve member I3, at one end upon the sleeve, the spring being bent
any such particles are sheered to permit a tight upon itself and having a trigger part and an
sealing of the valve member.
opening for slidably receiving the plunger, the
As the present attachment merely replaces the opening being of‘a size to permit free sliding 35
usual drain and requires no other substitution movement of the plunger therethrough Vupon
or mounting of parts, and will fit any style or movement of the trigger part and the spring
make of engine, the present invention has a uni
locking the plunger in adjustable position upon
versal application to all makes of automobiles.` release of the trigger part.
40 By making the operating means or control flex
ible, it may be mounted and controlled at any
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