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Патент USA US2117396

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May 17, 1938.
R. G. BIRR
2,117,396
TOWEL DISPEN’SING APPARATUS
Filed Aug. 9, 1955
4 Sheets-Sheet l
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ArroR/VEYJ
May 17, 1938.
R. G. BIRR
2,117,396
TOWEL DISPENS ING APPARATUS
Filed Aug. 9, 19:55
4 Sheets-Sheet 2
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ATTORNEYS
May 17, 1938.
R. G. BIRR
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2,117,396
TOWEL DISPENSING APPARATUS
Filed Aug. 9, 1935
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May 17, 1938.
2,117,396
R. G. BIRR
TOWEL DISPENSING APPARATUS
Filed Aug. 9, 1955
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2,117,396
Patented May 17, 1.938
UNITED STATES PATENT OFFICE
2,117,396
TOWEL DISPENSING APPARATUS
Rudolph G. Birr, Lombard, Ill., assigner to
Steiner Sales Company, Salt Lake City, Utah,
a corporation of Utah
Application August 9, 1935, Serial No. 35,503
4 Claims.
This invention relates to mechanism for dis
pensing various types of drying units, for eX
ample paper towels, and is adapted for dispens
ing various forms of drying units of the inter
folded type, wherein the pulling out of one towel
pulls the end of the next towel into a position
to be advanced by the feeding means.
A very important feature is the provision of
means for regulating the advance of the supply
so that withdrawal friction of the sheets or
units is reduced to and maintained at a mini
mum, and so that this desirable result is ob
tained for all weights, thicknesses and grains or
grades of paper.
Heretofore it has been the practice to provide
a stack 'of units: and to successively remove the
units from the bottom of the stack. Under these
conditions, at first, the weight of the stack acted
on the bottom-most sheet to create an undesira
20
ble degree of frictional withdrawal resistance
sufficient to make withdrawal difficult, if not im
possible. As withdrawal continued and the
weight of the stack decreased, Withdrawal resist
(Cl. S12-_54)
the last mentioned purpose; the use of a spring
as the sole means for supporting the Weight of
and advancing a stack, pile or supply of drying
units, interfolded or not interfolded; the use of
means forcibly automatically acting to advance 5
the supply support with a gradually lessening ap
plication of force as the weight of the supply
is reduced following successive removal of the
units; all the details of construction shown; and
the broader ideas of means inherent in the dis 10
closure, along with combinations and subcombi
nations of such means.
Objects, features and advantages of the inven
tion will be .set forth in the description of the
drawings forming a part of this application, and 15
in said drawings
Figure 1 is a vertical section taken approxi
mately on line l-l of Figure 2 showing the feed«
ing mechanism in inactive position;
Figure 2 is a vertical section taken approXi- 20
mately on line 2_2 of Figure 1 with the feeding
and timing mechanism disposed as at the begin
ning of the timing period;
ance was gradually lessened. This varying de
25 gree of withdrawal resistance is very unsatisfac
tory and the conditions were such at times as
Figure 3 is a plan section on line 3-3 of Fig
ure 1;
25
Figure 4 is a fragmentary section of the upper
to seriously interfere with Withdrawal. In other
words, dependable feed was not obtainable.
In the present device the units are removed
30 from the top of the pile, the entire pile is ad
vanced against the action of gravity toward the
feeding means and withdrawal friction is always
maintained at aminimum whatever the height
part of the cabinet, similar to Figure 1, but show
ing the feeding mechanism conditioned for feed
ing, and showing in dotted lines the position of
of the pile.
-
The preferred embodiment of the invention
as illustrated herein includes as a feature means
by which the units are delivered from the upper
part or top of a cabinet as distinguished from de
livery from the lower part or bottom. Another
the feed roll throw-out cam;
.
30
Figure 5 is a section on line 5_5 of Figure 2,
with the stop mechanism at stop position, and
timing just beginning; and
Figure 6 is a fragmentary sectional elevation
taken approximately on line 6--6 of Figure 2 35
with the feeding rolls in feeding position, and
showing the pawl for preventing reverse rotation
of the feeding means.
The drawings illustrate an important embodi
feature is the feeding of the sheets from the top
ment of the invention adapted particularly for ` 0
of the pile.
Another feature in combination is means for
handling drying units of the interfolded type, but
it is understood that the broader aspects of the
preventing quick successive operations of the
feeding mechanism, thus making it necessary for
invention are not limited to the details, although
the user to wait for some predetermined time
period before he can obtain a second unit.
Other features of the invention include: the
In the drawings, numeral l indicates a casing
or cabinet which has a door 2 suitably hinged as
at 3, and having a suitable lock 4. Within the
cabinet are arranged two upright plates indi
cated at l0 and l l, said plates being spaced from
the end walls of the cabinet and being suitably
secured to the top, rear, and bottom walls of
the casing l, In the upper wall l2 of the cabinet
is a towel delivery opening formed by cutting and
turning back the metal as at IS to form a slot 55
»
delivery of the towels from. the top of the cabinet;
the arrangement of the feeding means above the
50 towel supply; the compact arrangement of the
feeding means adjacent the top of the cabinet;
the feeding of a pile of units against the action
of gravity; the means for regulating the fric
tional withdrawal resistance of each unit to make
55 such resistance uniform; the use of a spring for
the speciñc construction is claimed.
„
2
2,117,396
Ili. This top delivery is a feature of the inven
tion.
Plates I'l-I8 are arranged below the slot I4 to
form a throat I9 leading upwardly to the open
substantially conical spiral type is used. The
base end of the spring ‘II is operatively associated
with and, in this instance, engages the bottom
of the support 63, and the apex 2l of the spring
ing or slot. Through this throat the paper is de
livered from the feed rolls. A feature of this
is immovably secured as at 'I3 to the bottom wall
invention is the upward delivery of the units
projecting pins l5, see Figures 1 and 2, extending
from opposite sides outwardly through vertical
or sheets to a point outside of the cabinet for
access by the user. 'I‘he throat-forming plates
are suitably secured to the upper wall I2 and to
vertical plates IU and II.
An upwardly acting feeding mechanism is ar
ranged below and immediately adjacent the lower
end of the throat formed by plates I'I and I8.
Referring first to Figures l and 4: Numeral 26
indicates a feed roll shaft horizontally jour
naled in the plates Ill and il and extending out
wardly through those plates, see Figures 2 and 6.
To the end of the shaft is ñxed a gear 25 which
meshes with a second gear 26 fixed to a shaft 2'I,
journaled in plates Iû and I I and extending
through the end wall 28 of the casing I, and hav
ing attached thereto crank handle 3E). A pawl
32 prevents rotation of the shaft 26 in a clockwise
direction, as viewed in Figure 6, the feeding direc
tion being counter-clockwise. Attached between
the gear 25 and the wall Il is a throw-out cam
35, and attached at the opposite end of the shaft
25, (see Figures 2, 3 and 5) is a similar cam 36.
30 These cams are engageable with a shaft 46 having
thereon feed roll ¿i I. This shaft 60 is translatable
in horizontal slots 62 to be moved into and out
of operative relation with the feed roll of the
shaft 28, and is urged toward the roll by means
of springs, one at each end of the shaft and at
tached as at ë@ to the plates I6 and II. Each
spring engages a stop 45 and the other arm passes
through an opening in a clip 66 circumscribing
said shaft 40.
The clips ¿36 are slotted as at 4l (see Figure 3)
so that the cams 35 and 36 can directly engage
the shaft. Figures l, 3 and 5 show the separated
or non-feeding position of the rolls, and Figures
4 and 6 show the rolls in feeding position. The
cams have notches 56 which are adapted to as
sume releasably locked relation with the shaft.
Referring to Figure l: Two plates are respec
tively indicated at Sil-6I. These plates form a
throat 62 leading upwardly and delivering to the
50 feed rolls. The plates are suitably secured to the
plates I6 and il by screws as shown. The sup
port for the pile or supply of units is indicated 63
and is moved against the action of gravity to ad
vance the supply toward the feeding means. The
55 supply is generally indicated at 65, and in this in
stance each unit 66 is of the interfolded type.
Referring to Figures 2 and 3: Each plate
Bil-_6I is provided, in its horizontal portion, with
downwardly convex projections 62 which may be
60 considered point contact friction elements against
which the topmost drying unit of a pile of units
is lightly pressed, in the manner hereinafter men
tioned.
Referring to Figure 4: During withdrawal of
one sheet, the topmost portion 66 of the next
sheet is pulled between the spaced rolls, and then
the roll 4I is brought to feeding position and ro
tated. There is no intention to `entirely limit the
invention to the type of units fed, since delivery
from the top of a pile, as distinguished from the
bottom, may be accomplished for other types of
units and with other types of feeding means.
In order to automatically move the support 63
upwardly and maintain only a light degree of
75 frictional withdrawal resistance, a spring ’I6 of
'I4 of the casing I.
D
The support is provided with
guide slots ‘I6 of plates Ill and I I.
Although the speciñc form of spring has been
shown and is claimed, other means may be pro
vided for forcibly automatically acting on the
support with a gradually lessening application of
force as the weight of the pile or supply is re
duced, following successful removal of the units. 15
A very light compression of the pile is produced so
that the proper degree of frictional resistance
is maintained between the uppermost sheet and
the downwardly convex elements 62 of the throat
forming plates 60 and 6I.
20
In order to prevent quick ‘successive operation
of the feeding mechanism and to thus make it
necessary for the user to wait for some predeter
mined time period before he can obtain a second
drying unit the following means is provided: Re 25
ferring ñrst to Figures 2 and 5: On the shaft
26 at a point outwardly beyond the cam 36 which
is adjacent plate Ill, is attached an arm 80 and
to this arm is pivoted a link 8l slotted as at 82.
The numeral 83 indicates the barrel of the dash 30
pot type of timer having the usual adjusting
screw 93 and having the usual stem 84. The
stem has a head 85 engaged by fork 86 of a slide
8l slidably held in brackets 89-90. 'I‘he slide is
bent as at 9|, to provide the oifset portion 92, 35
which is guided in the upper guide 90 and which
acts as a stop, extending above this guide in
position to oppose the movement of the arm B0
when the timer is set as shown in Figure 5. At
the end of the timing period this portion 92 as 40
sumes the position shown in Figure 2 permitting
the arm 86 to move in clockwise direction, as
viewed in Figure 5, to cause the cams 35--36 to
release roll shaft All and allow it to assume feed
ing position, and on operation of crank 30 to feed 45
another unit, as the motion in clockwise direc
tion continues.
The slide 81 is operated by the link 8| and for
this purpose has a projection 95 passing through
the slot 82, a suitable split key 96 being used to
prevent detachment. 'I‘he elements 86-92 and
related parts constitute a time stop mechanism.
The notches 55 also act, after the arm 80 has
engaged the stop 92, to back olf the arm to avoid
frictional contact between arm and stop, which
contact would interfere with the downward tim
ing motion of slide 8l. These notches act to re
tract the arm 86 to the position shown in Figure
5, slightly spaced as shown at 98 away from the
part 92.
Although the construction of the timer is not
shown it will be understood that after the piston
is raised as shown in Figure 5 and released, the
piston automatically travels downwardly at a reg
ulated rate to bring the stop 92 to the position
shown in Figure 2, thus permitting another feed
50
55
60
65
ing operation.
Operation
Assume the parts to be positioned as shown
in Figures l and 5 which correspond to a locked 70
position of the mechanism in which position
feeding is prevented. This corresponds to the
beginning of the timing period. Under action
of the timer, the element 81 will travel down- 75
2,117,396
3
wardly to the dot-and-dash line position shown
ly convergent plates, feeding means upwardly to
in Figure 5, As soon as its upper end arrives
at a level below the lower end of the arm 80,
which the throat delivers comprising two rolls
normally separated to allow a sheet to pass
therebetween and by both of which rolls a sheet
is fed, means for causing one of said rolls to
move toward and away from feeding position
when one of the rolls is rotated, and a guide
leading upwardly to said orifice to receive a fed
unit and guide it to a forwardly slanted acces
another operation will be possible.
Assuming
that the arm 80 is free to turn, the operator
manipulates the crank to rotate the shaft in
clockwise direcion as viewed in Figure 5. Dur
ing the first part of the rotation, the cams 35-36
release the shaft 4I and the shaft moves to the
10 feeding position shown in Figure 4. At the same
time the link 8l begins to rise and acts by means
of a pin 95 to raise the timer stem 84 to set the
timer. This setting is completed at the end oi’
the half revolution of the shaft 20. At the end
15 of a complete rotation of shaft 20, the arm 8G
engages the stop 92 and then, after the opera
tor releases the crank, the rotation of the shaft
20 is reversed slightly by the action of depres
sions 50 of cams 35-36 to back off the arm to
20 the position shown in Figure 5.
I claim as my invention:
1. A mechanism for dispensing drying units
comprising a cabinet having a delivery orifice
in its top wall, a support and means for advanc
25 ing it to move a pile of units toward the top,
a throat, feeding means upwardly to which the
throat delivers, means for operating the feeding
means, and a guide leading upwardly to said
oriñce to receive a fed unit and guide it to a
30 forwardly slanted accessible position.
2. A mechanism for dispensing drying units
comprising, a cabinet having a delivery orifice
in its top wall, a support and means for auto
matically advancing it to move a pile of units
35 toward the top, a throat comprising two upward
sible position.
3. A mechanism for dispensing' drying units
comprising, a cabinet having a delivery orifice in
its top wall, a support and means for automati
cally advancing it to move a pile of units toward
the top, a throat comprising two upwardly con 15
vergent plates with which the topmost sheet of
the pile engages only over a small area, feeding
means upwardly to which the throat delivers,
means operating the feeding means, a guide
leading upwardly to said orifice to`receive a fed 20
unit and guide it to an accessible position.
4. A mechanism for dispensing drying units
comprising a cabinet having therein a pair of
spaced vertical plates having vertical guide slots,
a support having guide pins operating in said 25
slots, and means moving the support upwardly
to advance a pile of toweling units thereon,
means against which the topmost units are
pressed, in a manner to reduce friction to a
minimum, unit feeding means above said last 30
mentioned means, and a delivery opening
through which said feeding means delivers a
unit for access to the user.
RUDOLPH G. BIRR.
35
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