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Патент USA US2405481

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Aug. 6, 1946.
F. WILKES
. 2,405,481
GREASE DI S PENS ER
Filed Oct. 19, 1943
INVENTOR.
FEEDER/C (ll/i1. Kss.
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Patented Aug. 6, 1946
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2,405,481
UNITED STATES-r‘
2,405,481 f
GREASE DISPENSER
Frederic Wilkes,‘ 'Wilkinsburg, Pa.
. Application October 19, 1943, Serial No. 506,822
5 Claims.
(01. 2264425) , ,
1
My invention relates more particularly to dis
pensing devices of the reservoir type that are
particularly suitable for ?lling grease guns such
2
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When it is desired to ?ll a grease gun, the cap
H will be put aside as indicated by dotted lines
in Fig. 1, and the barrel of the grease gun opened,
as those employed in the lubrication of automo
the grease gun barrel then being slid upwardly
biles and other, machinery, but it will be under 5 upon the nozzle 9. Thereupon, the valve l5 will
stood that the apparatus can be employed also
be moved to the position shown in Fig. 3, thereby
in dispensing other materials of a semi-liquid
causing grease to be extruded from the nozzle
nature.
9 into the grease gun. As the gun barrel becomes
One object of my invention is to provide dis
?lled it'will be permitted to move downwardly
pensing reservoirs that can be placed at locations 10 along the nozzle 9 and when it reaches the lower
which are convenient to where the lubricating
end of the nozzle the valve I5 will be released and
service men are working, and which can be oper
turned by its spring 22 to the position shown in
ated conveniently and quickly, to ?ll grease guns.
Fig. 2. At that position the port It! will effect
Another object of'my invention is to provide
connection between the pipe 16 and an exhaust
a pressure-operated dispensing device that can 15 port 2|, thereby permitting exhaust of pressure
be used more easily and with less waste than var
from the upper side of the piston 13, to stop
ious other types of ?lling or dispensing devices
further ?ow of the grease, the cap ll being re
that have heretofore been employed.
turned to its full line position to prevent dripping
of grease.
Some of the forms which my invention may
take are shown in the accompanying drawing,
When re?lling of the chamber 5 is required the
wherein Figure l is a side view, partly in section,
lid 6 is raised and the operator will grasp a han
of a dispensing apparatus embodying my inven
dle 23 on the upper side of the piston to lift it
tion; Fig. 2 is an enlarged view showing the pres
from the chamber, whereupon a new supply of
sure control valve of Fig. l, in position to cut oif
grease can be introduced.
the supply of motive ?uid to the grease chamber; 12
In Fig. 4 I show a dispensing device similar to
Fig. 3 shows a valve in position to admit the mo
that of Fig. 1 but of such construction that the
tive ?uid to the grease chamber, when ?lling a
pressure-controlled valve is automatically oper
gun, and Fig. 4 shows a modi?cation of the'strue
ated, and means‘ are provided for admitting ?uid
ture of Fig. 1.
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“pressure to the underside of the piston When it
Referring ?rst to Figs. 1 to 3, the grease cham 30 is to be raised for re?lling of the chamber 5. In
ber or reservoir is indicated by the numeral 5.
this arrangement, pressure is admitted to and
This chamber has a hinged lid or cover 6 that is
exhausted from the upper portion of the chamber
releasably held in air-tight closed position by
by the valve l5, as in the case of Fig. 1. However,
nuts ‘I and eye bolts 8. The chamber 5 has a dis
the valve is so positioned that its handle i3 will be
charge nOZZle or spout 9 that will suitably be ap- 35 engaged by the grease gun it when placing the
proximately of the length of the longest, grease
gun barrel over the spout and the valve handle
gun barrels I0 that are to be ?lled. A cap ii is
l8 thereby turned from its dotted line position
supported by pivotally-hung spring arms l2, from
of Fig. 4 to its full line position to eli'ect a flow
of grease into the gun. This movement places
moving out of the nozzle when a grease gun is not 40 the ValVB Spring 22 under tension While the
in place for ?lling, the spring arms I2 serving to
valve will be opened immediately upon the en
hold the bottom of the cap snugly against the
trance of the gun upon the spout, the gun can he
end of the nozzle.
slid quickly upward so that it will be in its upper
A piston 13 is positioned in the chamber, for
most position on the spout When suf?cient pres
movement toward the nozzle 9 in order to extrude 45 Sure has been built up above the piston to start
grease from the chamber. Air pressure for mov
the feeding of grease. It is desirable to have the
ing the piston down is supplied from a suitable
nozzle 9 extending to approximately the lower
source through a pressure line l4, past a valve I5,
end of the grease gun, barrel at the beginning of
through a pipe I6, and through a ?exible pipe
a ?lling operation, so as to avoid entrapment of
the lower end of the chamber 5, to prevent grease
H, the pipe I] communicating through the lid 6 50 air below the grease that is introduced into the
barrel.
with the interior of the chamber. When the valve
handle I8 is in the position shown in Fig. 3, the
Upon removal of the grease gun fom the nozzle
valve port l9 provides communication between
it will become disengaged from the handle it,
the pipes l4 and IE to admit fluid pressure to the
permitting the valve to be moved ‘by its spring
upper side of the piston.
55 .22 to the position shown in Fig. 2, thus auto
2,405,481
3
into the other end of the chamber, to thereby
matically e?ecting cut o? of ?uid pressure from
force grease through the nozzle, the nozzle being
the line l4 and exhaust of ?uid pressure from
of such diameter and length that it will enter
the upper side of the piston.
a grease gun barrel and will extend substantially
When it becomes necessary to re?ll the cham
the full length of a grease gun barrel that is slid
ber 5, air pressure will be admitted from a pipe
into position over the same, a valve for control
23 into the lower portion of the chamber and
ling the admission of ?uid presspre to the cham
against the under side of the piston. The pis
ber, and an operating member for the valve lo
ton will thereby be raised to the under side of
cated adjacent to the discharge end of the nozzle
the cover, to permit opening of the cover and
re?lling of the reservoir. The piston has an 10 in position to be engaged by a grease gun barrel
as the barrel approaches grease-receiving posi
upstanding boss or arm 25 that extends through
a guide sleeve 26 that is formed on the upper side , tion, whereby the valve is opened to admit ?uid
pressure to the chamber, and means automati
of the cover. The members 25 and 26 serve as
cally returning the valve to closed position when
a guide or prevent tilting of the piston, partic
, the barrel is being removed from the nozzle.
ularly when it is being raised by ?uid pressure.
I claim asmy invention:
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1. A dispensing device for grease and the like,
comprising a chamber having a discharge nozzle
of a length not substantially less than the length
4. A dispensing device for grease and the like,
comprising a chamber having a discharge ori?ce
in its lower end, a piston in an upper portion of
the chamber, a cover hinged to the upper end
of a grease gun barrel to be placed over the noz 20 ofthe chamber, a ?exible pipe extending through
the cover adjacent to its hinge connection and
zle for ?lling, a piston in the chamber, means for
admitting ?uid pressure to the upper side of the
supplying ?uid pressure to the rear side of the
piston, a ?uid supply line for the pipe, extending
piston, to move it toward'the nozzle and thereby
past a. point that is in proximity to the said noz
effect discharge of grease from the chamber, a
valve controlling the supply’of fluid pressure, 25 zle, and a valve at said point, for controlling the
?ow of ?uid pressure through the said line, the
means operable to open the valve through the
?exible pipe serving to allow opening and closing
sliding of a grease gun barrel into position'over
of the cover without disconnection from the
the nozzle, and means for automatically closing
source of ?uid supply.
the valve upon removal of said barrel from the
5. A dispensing device for grease andthe like,
30
nozzle.
,
comprising a chamber having a discharge ori?ce ‘
2. A dispensing device for grease andthe like,
in its lower end, a piston in an upper portion of
comprising a chamber having a discharge nozzle
the chamber, a cover hinged to the ‘upper end
of a length not substantially less than they length
of the chamber, a ?exible pipe extending through
of a grease gun barrel to be placed over “the noz
zle for ?lling, a piston in the chamber, means for 35 the cover adjacent to its hinge connection’ and
admitting ?uid pressure to the upper side of the
supplying ?uid pressure to the rear side of the
piston, a ?uid supply line for the ppie, extend
piston, to move it toward the nozzle and thereby
ing past a point that is in proximity to the said
effect discharge of grease" from the'chainber, a
nozzle, a valve at said point, for controllingthe
valve controlling the supply of ?uid‘ pressure,
means operable to open the valve through the 40 ?ow of ?uid pressure through the said line, a sec
‘ond pipe leading from said line into the lower
sliding of a grease gun barrel into' position over
end of the chamber to admit ?uid pressure for
the nozzle, and means for automatically closing
raising the piston, and a valve for controlling
the valve and exhausting ?uid ‘pressure from the
‘?ow through said second pipe, the ?exible pipe
rear side of the piston, upon‘ removal of the bar
45 serving to allow opening and closing of the cover
rel from the nozzle.
without disconnection from the source of ?uid
3. A dispensing device for-‘grease and the like,
supply.
.,
comprising a chamber having a discharge nozzle
FREDERIC WILKES.
at one end, means for supplying ?uid pressure
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