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Патент USA US2106023

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Jan. 18, 1938.
H. R. 1EAR
2,105,023
LUBRICANT DISPENSER
Filed March 3, 1937
2 Sheets-Sheet 1
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INVENToR. . I
Har/jy JQ. Tear
BY
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, WWY‘M
_
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A
ToRNEYs.
Jan. 18, 1938
2,106,023
H.R.TEAR
LUBRICANT DISPENSER
Filed March 3, 1957
2 Sheets-Sheet 2
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A TToRNExs.
Patented IJan. 18, 1938
2,106,023 `
' UNITEDSTATES PATENT~ OFFICE
LUBBICANT DISPENSER
Harry R. Tear, Evanston, lll., assignor to The
Lubrication Corporation, Chicago, Ill., a. corpo
ration of Delaware
Application March 3,1937, serial No. 128,723 ì
30 Claims. (Cl. 2821-473)
The above and other objects and- features of
This invention relates to'dispensing apparatus,
and is illustrated _as embodied in low-pressure the invention, including a novel interlock pre
"guns” for dispensing lubricating oil packaged in venting the opening» of the air valve when the
apparatus is opened up for the insertion of a
`
'
new can, andl other novel combinations and de- 5
One object of the invention is to force the con
tents from the can while leaving the can body sirable arrangements of parts, will be apparent
from the following description of the illustrative
intact, so that there need be no drìppage after
wards from the empty can if it is kept right side . embodiments shown in the accompanying draw
n
'y
up. With this object in view, I arrange the ings, in which:
Figure 1 is a section longitudinally through one lo
apparatus so that one end of the can is first punc
tured to provide an outlet or discharge opening, embodiment of the invention, in which the can
body is moved and the cut-out can end is sta
and is then cut out and forced toward the bot
tom of the can to .force the contents out through tionary in dispensing the contents-of the can;
the original cans.
5
l
the discharge opening.
l
This end of the can is ,
preferably faced with a packing member, such as
a disk of cardboard,.formed`with a central open
ing which registers with the above-described dis-l
Figure 2 is a section through the can or car
tridge, showing the arrangement of the packing 15
member;
and
'
-
-
'
.
Figures 3 and 4 are sections .through other em
charge opening formed in the can end.
bodiments.
,
is arranged to move the cutters and the can rela
formed in any usual manner, and having seamed
thereto ends I2, either of lwhich is intended to .
The package or container intended to be used
Another object of the invention is to providewith the illustrated apparatus is preferably a
20 the apparatus with power for performing the cut
20
ting operations. In the embodiments selected for can or cartridge having the end structure shownv
in
Figure
2.
'I'his
can
includes
a
can
body
I0,
illustrations, a piston operated by compressed air
tively to each other as described above, and pref
25 erably also operates the means for forcing the
oil from the can.
f An. important feature of the invention, em
bodied in the preferred form herein described, has
to do'with simplifying the construction of appa
3o ratus of this character, by supporting the cut-out
can end against movement and forcing the can
body upward over it.
,
.
.
'
g
The means shown for cutting :out the can end,
and supporting it _while- the oiifis-,forced out ofv
» 35 the can, includes a plunger long' enough to force
-the cut-outv can end to the bottom of the can,
and which is stationarily mounted if the air pres
sure moves the can body over> the plunger, orv is
moved by the air pressure to actuate the cut-out
40 can end if the can body is stationarily supported.
This plunger has at its forward end a seal en
gaging the can end in a zone surrounding the
- discharge opening and is provided with a pas-_
sage through which-the oil is forced from said
I 45 opening to a suitable -conduit'designed for in-.
sertion into the filler opening of a transmission
casing or differential housing or the like. The
'seal is preferably mounted yieldìngly on the
plunger, in a novel manner described below, so
50 that it is held firmly against the can end while
' it is being out, and then shifts it forward ahead
- I
of the knives so that the can end can be forced.
_' "yfßclear to the. bottom of the can although the
be cut out entirely free from the can body, and
moved as' a piston to the bottom of the can to Y
force out the contents. Each of these ends is '
shown faced with a packing member such as an '
annular cardboard disk I4 or the like arranged
to leave a central unobstructed can-end portion .
IB adapted to be pierced as described below, to 3o
form an outlet or discharge opening.
ì
The above-described container is claimed in my
application No. 110,968, ñled November 16, 1936.
Whether or not- this exact form of container is
used, the can of oil is preferably arranged- (as 35
shown in dotted lines in Figure 1) in a two-part
housing. One part Il!y of the housing is long
enough to receive thecan and (in this particular .
embodiment) serves'asa cylinder for an air-op- 40
erated piston 20 which forcesA the opposite end`
of the can against the knives or cutters of the
apparatus.
‘
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,-
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'
The other part 2_2 of this- form of housing con- _
tains a novel plunger device 24 which supports ß
the cut-out perforated `end of the can while the _
-plston 20 forces the can body over it to discharge
the -oil. Thetwo parts of the housing are de@ '
tachably connected by any suitable meanasuch
as a series of lugs 26' on one of the
are
part.
movable in bayonet-type recesses
' '
on
'
the
. o.
50' `
' `
The piston 2l) consists of two- parts clamping
,Y . knives do not travel quite that far and therefore
a suitable piston packing 28 between them. It
,55- cannot possibly damagethe can bottom.
may be provided,„for example at; its center, with u _
2, 108,023
2 ,
a relief valve 80 shown as consisting of two con
nected members `4m opposite sides of the piston,
one of these members being a disk which is pushed
back into seated position, to seal the port through
the piston, by placing of'the can of _oil in the
housing.
The piston carries a bumper spring 32, _
serves as a stop against which the element 82 is
urged by its spring 84.
- ‘
The«knife 80 may be arranged to start cutting
before knife 65 has ñnished its operation, as the
latter continues its operation until the end of
the can is entirely severed from the can body.
During this cutting operation, the seal 68-14 ‘
the end- convolution of _which is shown attached
to the piston by means such as _an attaching _yields against the resistance of the spring 16. As
stamping 34.
10
'
soon as the can end is cut free, the spring 16
_
The end of part |8 of the housing'is'ëhown
the cylindrical _portion of the housing. part, and
pushes it forward until the pressure of the spring 10
on the seal balances the pressure on the oil in
the can from- piston 20.
which is formed with means such as a threaded
socket 88 for the attachment of an air hose or
After the end of the can is formed with an
outlet opening by the cutter 66, and after the f
as a die-cast element 36 threaded to the end of
15
the like.
\
_
.
'
_'
This element 38 is formed with an inlet air
passage controlled by a valve member 40 urged
toward closed or seated position by a spring 42
and opened by means such as a pivoted lever 44
20 arranged
'for convenient manual operation.
When the valve 40 is seated, the space back of
piston 20 is vented through a passage 46. It will
be seen that the depression of lever 44 causes the
can to be forced forward by the pressure of the
25
end is cut out by the cutter 80, further advance 15
of the piston 20 forces the can over the cut-out
can end, to force the oil out through the pas
sage 50 and out through -the discharge conduit
52. 'I'he end of the piston stroke is determined
by engagement of the annular element 82 with 20
_a stop shoulder 80 formed on the diecast end 56.
When the piston 20 stops in the position s`o de
termined, which is before either of the cutters 55
or 80 engages the'bottom of the can, the spring
18 forces the cut-out can end clear down to the 25
The novel stationary plunger 24 is hollow, to bottom of the can, thus completing the discharge
form an oil discharge passage 50 communicating - of the oil without in any way damaging the can
with a suitable spout or curved conduit 52, shown body. air behind the piston 20.
-
.
_
_
'
as normally closed by a spring-held check valve
30 54. The plunger is supported by being threaded
' at .one end into a diecast end element 56, to
which the spout 52 may also be threadedly con
The embodiments of Figures 3 and 4 differ
from that of Figure l principally in that the can 30
body is held stationary, while the cut-outl can
end is moved to the bottom of .the stationary can
body to discharge the contents. The embodi
The other end of the plunger 24 has threaded ment of Figure V3 differs from that of Figure 4
35 there-into a hollow shouldered fitting 58, the in
principally in that the apparatus is provided with 35
let in the end of which has associated therewith _a “booster” piston of larger diameter for operat
an outwardly-opening ball check valve 60, pre ' ing the cutters, this being desirable when high
vented from undue displacement by- any suitable pressure air is not available. Where the parts in
nected.
.
^
‘
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means such as a retainer 62 held in _place by a
Figures 3 and 4 are the same as in Figure l,I the
washer 64 clamped between the plunger 24 and
the end of the fitting 58. The end of the fltting
has rigidly mounted thereon a knife or cutter 66
shapedv to punch out an outlet or discharge open
parts are not the same, but' have the same or '
ing in the end of the 4can' when the piston 20 n
Figure 4.
45 pushes it forward.
same reference characters are used'; where the
analogous functions, the reference characters
are increased by |00 in Figure 3 and by 200 in
,
Figure 3 shows a low-_pressure “gun" having
.
’I’he end of the fitting 58 is slidably embraced the can held stationary in a two-part housing
by a seal consisting vof stamplngs 68 and 10,.em- . ||8-_-| 22 (shown with the bayonet connections
bracing between them at one end, a packing 12 _ 26). The_knives or cutters 66 and |80 are mount
encircling the fitting 58 behind the shoulder- ed on the end of a movable tubular plunger |24
50 formed thereon, and formed to support at the
connected to the air-operated Apiston |20 for
other end a packing 14 engageable with the can
end in a zone encircling the opening formed by
the cutter 56.
9
A
'
_
-
A relatively heavy coil spring 16, held incom
55 pression between the seal just described and a
cup-shaped stamped retainer -18 seated against
movement against the resistance of a pair of -co
axial coil return springs |84. 'I’he‘plunger |24
telescopes on a stationary tube |25 to for the
oil passage 50 leading to the outlet cond t 52.
The end |56 is shown formed with'an annular 55
stop |51 which determines thereleased position
the end of the plunger `24, permits the seal to _of the piston |20.
yield as the can is forced forward, during the ï
The lower portion of the casing .has three sec~
operation (first) of the knife or cutter '66 and A'tions connecting the vcasing portions |22 and |56. '
60 (second) while the end of the can is cut out from
One'of these is a die-casting |28, into the end 60
the can body by an annular knifeor cutter 80 ’of which the casing portion |22 is shown thread
ed, andv which is formedwith aaleeve portion
seated against, and suitably secured to', the sta
tionary retainer 18.
«
y
'_
' _
.
The end of the can, as it is forced‘forward to
65
cut out the end in- this manner, engages the end
edge of an annular member 82 backed up by a
spring 84 (which may be considerably .lighter
thanthe spring 16).
The spring 84 is shown
70 confined between the member 82 and the diecast
end A56, which is shown formed with an annular
recess receiving the end of the spring. Member
-82 is.formed"with an annular shoulder which
initialiy'seats against an out-turned end Aflange
75 on thestationary retainer 18, so that the latter
|21, provided with a leather sealing packing |28,
encircling and guidingly supporting the plunger
|24, and providing an air seal for the operation
of the booster piston as described below.
The two other sections are coaxial tubes |3|
land |38, of different diameters, both threaded
into the section |23 and the outer one threaded
into the end section |56, leaving between them 70
an annular-air passage l|35 leading to the pres
sure face of theA piston |20. The inner tube |3|
forms a cylinder for the piston |20. The springs
|84 are arranged coaxially within these tubes
and coaxially about the `plunger |24. l:
75
3
2,196,023
In this apparatus, a large-diameter “booster”
piston |59 of limited stroke is slidably sleeved on
the plunger |24, and on forward movement en
gages thel retainer |18, and carries the plunger
|24 forward far enough to operate the cutters
66 and |80 whereupon the piston |59 comes to
rest against a stop formed by inwardly hanging
the end of the casing section |22. -The piston
|59 has a leather seal |6| encircling the plunger
10 |24, and through which- the plunger |24 slides
after the piston |59 stops.-
'
The casing section |23 is formed to provide
-an air-cylinder |63 for the piston |59 and this,
as well as _the passage |35, communicates with
an air inlet passage |65 leading from the inlet
2|8. 'I'he airv passage 235 is formed by a small
conduit, instead _of being the space between co
axial tubes.
,
.
While three illustrative embodiments of my in
vention have been described in detail, it is not
my intention to limit the scope of the invention
to those particular embodiments or otherwise
than by the terms of the-appended claims.
I claim:
'
1. A dispenser comprising an- original package 10
of substantially cylindrical side wall shape and
havingV a closed end adapted to be substantially
wholly cut away, and means for cutting away
said closed> end and for forcing material through ~
an opening in said closed end, comprising an an l5
nular knife engageable with said closed end ad
jacent saidside wall to cut out said end and a.
cutter within the outline of said knife adapted to
the lever |44. "
.
The stroke of piston |20 is determined by eri- » make an opening- in said end, means for rela
port |38 and controlled by the valve l|40 the
head of which is engagedÍ by an operating pin on
20 gagement of the piston with a stationary stop-
tively moving the package. and said knife andx20
cutter to form an opening in said end and then?.
l
In this apparatus a safety device is provided cut it~away from the side wall, and means for'
to prevent lthe air valve |40 Afrom being lopened moving said cut end and said package relatively
when-the casing sections ||8 and |22 are sepa _to each other to -force the material from the 25
.
25 rated. `-In the arrangement illustrated, a plunger package through said opening,
‘2. A dispenser comprising an original package
or lengthwise-movable pawl' |92 is urged down
wardly (in the drawings) by means such as a of substantially cylindrical side wall shape and
spring |94, and'hasl at its upper end a pin |96 y having a closed end adapted to -be substantially
sleeve-|90.
wholly cut away, and means for cutting away
~` or the like which is brought by downward move
30 ment of the pa'wl into the path of a stop finger said closed end and for forcing material from
‘ |98 on the upper end of the lever |44; to prevent j said package comprising an annular knife en
the operation of the lever to open the air valve.
gageable with said closed _end adjacent said side
wall to cut out said end and a cutter adapted to
make an opening in said package, power operated
means for relatively moving the package and said 35
knife and cutter tó form an opening in said ending of the latter to secure it tothe section |22 and-then cut it away from the side wall, and
forces the pawl upwardly to release the air valve. power-operated means for moving said cut end
It“ desired, the pawl-engaging surface could be , and said package relatively to each other yto
provided on the can instead of» on the casing force the material from the package through said
The lower end of the pawl |92 is bent over to
ride in a slot 200 in the casing section |22, in
35 thevpath of a cam surface 20| formed on the
casing section | I8, so that the insertion and turn- `
section |I8.
'
‘
opening.
'
_
3. A dispenser comprising an original package
In the operation of this embodiment, after the '
closing of the casing IIB-_|22 releases the air of substantially cylindrical side wall shape' and
valve, operation of the lever |44 supplies air to having a closed end „adapted to be substantially
45 the cylinder |63 aswell as to the passage |35. wholly. cutaway, and means for cutting away
'I'he operation is in the‘following sequence: (1) said closed end ‘and for forcing material through
the pistons |59 and |20- operate the cutter 96 to an opening in said closed end comprising an an
form a discharge outlet opening in the can and nular knifeengageable with said closed end `adat the same time toseat the seal 68-'.'|4 against' jacent _said side wall to cut out said end and a
the can end; (2) both pistons |59 and |20 oper . cutter within the outline of said knife adapted
ate the annular cutter |80 to cut out the can f to make an opening in said end, power-operated
end; and (3) the piston |20 moves the can Íend means for relatively moving the package and said
knife and cutter to form -an opening in said end
to the bottom of the can to discharge. the con
and then- c'ut `it away from the side wall, and 55
tents.
'
«
means for moving said cut end and said package
Parts in Figure 4 which are not exactly th
same as, but which are analogous to, parts shown relatively to each other to force the material from
.
in Figure 3, are indicated by the same reference the package through said opening.
characters increased by .100. It is believed that
the operation. will be apparent from the foregoing
l_description of Figures 1-and 3.
It should be noted, however, that there is no
“booster” piston inthis embodiment, and piston
220 does al1 the work of operating the two> knives
88 and 280, until a stop boss 290 formed on the
65 piston engages the stationary flange 221. There
10
4. Dispensing- ,apparatus having meansv for
~forming a discharge outlet in one end of a can, 60
a substantially- ring-shaped knife for cutting
out the'end -formed with- the discharge outlet,
and means for` relatively moving the can and
said end for effecting the discharge' of the can’s
contents through saidoutlet.
5. Dispensing apparatus having Y means for
65
are two coaxial springs 218 acting on the seal ^ forming a. discharge outlet in o_ne end of a can,
in this embodiment, to increase the pressure lon a substantially ringshapedknife for' cutting out
one end of the can, fluid pressure means for
the seal.
The safety pawl 292 is pulled downward, . moving _the knife and the can relatively whereby 70
against the resistance of its spring 294, to move the knife -cuts out the 'can end, and means for-
pin 296 out of the path of part 298 of lever 244, relatively moving the can and said cut-out end
by an inclined cam slot 2|9 in casing section - for effecting the discharge of the can’s contents
Y _
v
2|8 which receives a ca_m pin on the end of the through said outlet.
6. Dispensing apparatus having power-oper
pawl 292 and forces it downwardly as the bayonet
75 lugs 26 are locked by turning the casing section ated means for forming a.- discharge outlet in
4
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_
2,106,0as/
.
one end of a can,`a substantially ringshap'ed
knife for cutting out one end of the can, iluid
pressure means for moving the knife and the
member to force the ‘material from the can
through the discharge opening.
_ 13. Dispensing apparatus comprising a device
can relatively whereby the knife cuts out the associated with the end of a can and having a
5 _can end, and means for relatively moving the. blade for puncturing saidv end of the can and
can and said cut-out end for effecting the dis
charge of the can’s contents through said outlet.
7. Dispensing apparatus comprising a device
having a space to receive the end of a can,
10 means‘ for holding a can with its end'in said
space; an annular knife and a-cutter within the
outline of the. knife to act on said end of the
can to fo'rm a discharge opening in and to cut
out said end of the can, and means for effecting
an annular seal engageable with said end sur
rounding said blade and having an annular cut
ter to cut out said end of the can outside of said
seal, whereby the cut-out end may be forced
through the can to dispensel the contents thereof 10
>through _the punctured portion.
14. Dispensing apparatus comprising a device
associated with the'end of,¿«a_,can and having a
blade for puncturing said end of the can and
15 relative movement of the-can and said cut-out- an annular seal engageable‘ with said end sur 15
end to discharge the contents of the can through‘ rounding .said blade and having an annular cut
said opening.
,
ter to cut out said end of the c_an outside of
8. Dispensing apparatus comprising a device- said seal, Aand power-operated means for rela
having a space to receivethe end of a can, means tively moving the can and said device withthe
20 for holding a can with its end in said space, a cut-out end to dispense material from the can .20
. cutter arranged to form a discharge» opening
' in the can, an annular knife arranged to act
on one end of the can to‘cut out said end of the
' can, fluid pressure means for Amoving .the knife
` 25 and the can relatively` whereby _the knife cuts
out the can end, and means for `effecting 'rela
_tive movement of the can and said cut-out end
lto discharge the contents of the can through
said opening.
30
_
'
,
9. Dispensing apparatus comprising a device
‘ having a space to receive the end of a can,
' means for holding a'can with its end in said
. . space, a power-operated cutter arranged to form
- a discharge opening in the can, -an annular knife
A35 arranged to act on one end of the can to -cut
outl said end of the can, fluid pressure means
for moving the knife and the can'relatively
whereby the knife cuts out the can end,.and
means for effecting relative movement of the
40 can and said cut-out end to discharge the con
tents of the can through said opening.
10. Dispensing apparatus comprising, in com
through the punctured end.
X
«15. Dispensing apparatus comprising a cir
.
cular knife for severing one end of a can from
the can body, a cutter for forming a discharge
opening ingsaid en‘d ,of the can, a plunger sup 25
porting the knifel and> cutter and having an
annular seal-for engaging the cut-out end around
the discharge opening. and having a discharge
. passage communicating with the discharge open
ing within said seal,'a support engaging the can, 30
_and means for relatively moving the support and
the plunger to dispense material from said can.
16. Dispensing apparatus comprising a circu
lar knife for severing one end of a-can from the
can`body, a cutter fofforming a discharge open .35
in_g in saidcan, a plunger supporting the knife
and having a part engaging the cut-out end, an
annular -seal for engaging the can around the
>discharge opening, a part having a'discharge
passage communicating with the discharge open 40
ing withinsaid seal, a support engaging the can,
and power-operated parts for relatively moving
bination with a can having one end faced in
the support and the .plunger to dispense ma
ternally with a packing member having a cen
terial from said can.
45 tral opening, a device receiving said end of^the
17. Dispensing apparatus comprising a circu
can, means for holding the can and said device lar knife for severing one end of a can from
together, means for- forming a discharge opening . >the can body, a cutter for forming a discharge '
through said end within the outline of the open
opening in said end of the can, a plunger sup
ing in the packing member, means for cutting porting the knife and cutter and having an an
50 said end free from the can, and means for rela
nular seal for >iengaging the cut-out end around
tively moving the can and the cut-out end with
its packing member, to force the contents of
the can out through the discharge opening.
11. Dispensing apparatus comprising, in com-_
55 bination with av can having one end faced in
the discharge ‘fiopeni'ng and having a discharge
passage communicating with the discharge open
ing within said seal, a support engaging the
can, and a fluid actuated piston for relatively
moving the'support and the plunger to dispense
ternally with a packing member having a cen
tral opening, a device receiving said end of the
material from said can. ,
can, means for holding the can and said device
cut out one end of a can adjacent the can wall,
together, means for forming a discharge opening
30 through said end within the outline of the open
ing in the packing member, and power-operated
means >for cutting said end freè'from the can
and for then relatively moving the can and the
cut-out end with `its packing member, to force
v65 the contents of the can out through the dis
charge opening.
'
*
' 12. The process of dispensing material from a
18. Dispensing apparatus comprising means to
and to form a discharge opening in said end,
a plunger having means for supporting the cut 60
out end against movement, and having a dis
charge passage communicating with said _open
ing, and means for moving the can body over
the cut-out end while so supported, to discharge
the contents of the can through said opening.
65
19. Dispensing apparatus comprising means to
cut out one end of a ,can adjacent the can wall,
can filled therewith and sealed with a packing means to form a discharge opening in said can, a
member internally facing one of its ends and plunger having means for supporting the cutout
70 formed with a central opening, which comprises ì end, a discharge conduit communicating with said
puncturing a discharge opening through said end opening, and means for moving the can body over
of the can within the outline of said` central ` the cutout end while supported by said plunger,
opening in the packing member, Tcutting said
end free from the can, and relatively moving
76 the can and the cut-out end with its packing
to discharge the contents of the can through said
conduit.
n
`20. A dispenser of theclass described compris 75
2,106,023
ing a tubular plunger having a discharge conduit
communicating Withits interior space and having
at its end an annular seal engageable with one
end of a can, a cutter mounted on said plunger
Cà within the outline of said seal and adapted to
puncture said end of the can, an annular knife
' carried by said plunger and arranged to cut said
end of the can free from the can body after it is
punctured by said cutter, and means for rela
tively moving the can body and the plunger to
dispense the _contents of the can through the con~
duit.
21. A dispenser of the class described compris
ing a tubular plunger Ahaving a discharge conduit
telescoping said plunger and communicating with
its interior space and having at its end an annular
seal engageable with one end of a« can, a cutter
mounted on said plunger within the outline of
said seal and adapted to puncture said end of the
can, an annular knife carried by said plunger
and arranged to cut said end of the can free from
the can body after it is punctured by said cutter,
and means for moving said plunger into the can
in telescoping relation to said conduit, to dis
25 pense the contents of the can through said con
duit.
charge conduit connected thereto and having its
end engageable with one end of a can, a cutter
adapted to puncture one end of the can, a seal
engaging the can around said cutter,_an annular
knife arranged to cut the end of the can engaged
by the plunger free from the can body after the
can is punctured by said cutter, and means for '
movingv the can body over the plunger to dispense
the vcontents of the can through the conduit, to
gether with a spring interposed between the seal
and a part carried by said plunger, the seal being
yieldable relatively to the plunger against the
resistance of the spring while the cutter and the 15
knife are operating on the can as described.
26. A dispensing apparatus comprising air
operated means for cutting out one end of a can
and forcing it through the can body to dispense
the contents of the can, means for supporting a 20
can for the operation thereon of said air-operated
means, a valve having a >manually-operated conv-_’
trol member and controlling the supply of air"
to the air-operated means, and an interlock pre
venting operation of the control member unless
a can is in position supported by the supporting
.
, 22. A dispenser of the class described compris
ing a stationary tubular plunger having a dis
charge conduit connected thereto and having its
end engageable with one end of a can, a cutter
adapted to puncture one end of the can, a seal
engaging the can around said cutter, an annular
knife arranged to cut the end of the can engaged
by the plunger free from the can body after the>
can is punctured by said cutter, and means for
moving the can body over the plunger to dis
pense the contents of the can through the con
DJ
25. A dispenser of the class described compris
ing a stationary tubular plunger having a dis
means.
.
operated means for cutting out one end of a can
and forcing it through the can body to dispense 30
the contents of the can, means for supporting a
can for the operation thereon of said air-operated
means, a valve having a manually-operated con
trol member and controlling the supply of air to
the air-operated means, and an interlock pre 35
venting operation of the control member and
which is> moved out of the way by the can-sup
porting means.
'
duit.
.
23. A dispenser of the classdescribed compris
40 ing a tubular plunger having a discharge conduit
communicating with its interior space and having
at its e'nd an- annular seal engageable with one
end of a can, a cutter mounted on said plunger
within the outline of said seal and adapted to
45 puncture said end of the can, an annular knife
` carried by said plunger and arranged to cut said
end of the can free from the can body after it is
punctured by said cutter, and means for relatively
moving the lcan body and the _plunger to dispense
50 the contents of the can through the conduit, to
gether with a spring interposed between the seal
and a part carried by said plunger, the seal beingl
yieldable relatively to the plunger against the
resistance of the spring while the cutter and the
55 knife are operated on the can as described.
'
27. A dispensing apparatus comprising air
v
28. A dispenser of the class described compris
ing a tubular plunger having a~ discharge conduit- 40
communicating with its interior space and hav
ing at its end an annular seal engageable with
one end of a can, a cutter mounted on said
plunger within the outline of said seal and adapt
ed to puncture said end of the can, an annular 45
knife carried by said plunger and arranged to-cut
said end of the can free from the can body after
it is punctured by said cutter, and means for rela
tively moving the can body and the plunger to
dispense the contents of the can through the con
duit, together with a stop preventing engagement
of the cutter and the knife with the opposite
end of the can.
.
‘
29. That method of dispensing the contents of
a can which comprises forming an opening in one
2_4. A dispenser of the class described comprls- ` end of the can, cutting one end of _the can free
ing a tubular plunger having a discharge conduit from the can body, supporting a discharge means
telescoping said plunger and communicating with in sealed relation tothe end of the can around
said opening, supporting the cut-out end of the 60
its interior space and having at its end an an
60 -nular seal engageable with one end of a can, a can against movement, and moving the can body
cutter mounted on said plunger within the outline forcibly over said supported cutout end vto force
of said seal and adapted to puncture said end of its contents through the discharge means.
30. That method of dispensing the contents of
the can, an annular knife carried by said plunger
and arranged to cut said end of the can free from a can which comprises forming an opening in one
65 the can body after it is punctured by said cutter,- end of the can, cutting said end of the can free
and means for moving said plunger into the can from the can body, supporting a discharge means in sealed relation to said end of the can around
, intelescoping relation to said conduit, to dis
pense the contents of the can throughsaid con;
said opening, supporting said cutout end of the
can against movement, and moving the can body
duit, together with an air-operated piston for
70 actuating the plunger and its associated parts to forcibly over said supported cutout end to force
dispense the contents ofthe can, and a spring to » its contents through the discharge means.
return the plunger and its associated parts to
initial position after the can is empty.
HARRY R. TEAR.
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