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Патент USA US2112744

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March 29, 1938.
G. W. WARDWELL; JR
2,112,744
IRONING MACHINE
Filed Aug. 11, 1937
2 Sheets-Sheet l
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Inventor“:
George :W. Wardwel l', Jr.
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His Attorneg.
March 29, 1938-
2,112,744
G. w. WARDWELL, JR
IRONING MACHINE
Filed Aug. 11 , 1957
V
2 Sheets-Sheet 2
Inventor":
George W. Wardwell, Jr‘,
by My
His Attorheg.
Patented Mar. 29, 1938
" v 2,112,744
UNITED‘ _.STATES
PATENT OFFICE
IRONING MACHINE
George W. Wardwell, 'Jr., Nichols, Conn., assignor
to General Electric Company, a corporation of
New York
August 11, 1937, Serial No. 158,517
'6 Claims. (01. 38-59)
The present invention relates to ironing ma
is arranged. between the housing and the adja
chines of the type having a heated shoe which - cent faces of gears 2|, 22 and 24.
cooperates with a roll.
The construction of the roll 2 isshown in-de
The object of my invention is to provide an tail in Fig. 4. ‘ It comprises a sheet metal cylinder '
5 improved construction and arrangement in iron
21 having a pad 28 on its outer surface. yThe 5
ing machines of this type and for consideration
of what I believe to be novel and my invention,
attention is directed to the. accompanying ‘de
10
pad 28 is held in placeby a pad cover- 29, the
ends of which are secured to the inner periphery
of the cylinder 21 by snap rings 39, only-one of
scription and the claims appended thereto.
" which is shown. At the center of the ‘roll are
In the accompanying drawings, Figure 1 is a two disks 3| having ‘outwardly projecting ?anges
perspective view of an ironing machine embody
32 ?xed to the interior of the cylinder 21 and
ing my invention; Figure 2 is an end elevation of having inwardly extending ?anges 33 which are
the' ironing machine, partly broken away; Fig
fixed to a bearing sleeve 34. The bearing sleeve
ure 3 is a sectional view taken on line 3—3 of
34 bears on a sleeve 35 which is rotatably sup
Figure 2; and Figure 4 is an exploded perspective
view of the mechanism for driving the roll and
ported by an eccentric 36 journaled on the left
end of the tube 19. Endwise movement of the
roll off the eccentric is prevented by a retain
. for moving the roll toward and away from the
shoe.
' ing washer 31 mounted on {projection 38 on the
Referring to the drawings, the itching ma- 7 eccentric. The eccentric is ?xed to the shaft l8
chine comprises a- frame or housing l which
carries a roll 2, a shoe 3, and the driving mecha
nism for rotating the roll and for moving the
. roll toward rand away from the shoe. The hous
ing is provided with a ?ange 4 for supporting the
25 ironing machine on the top 5 of a suitable table.
The housing has a vertical hollow portion 6
which serves as the frame or outer casing for
the electric motor used to drive the ironing ma- _
chine. The stationary member '| of the electric
,30 motor is pressed into the hollow portion 6 and
the rotary‘ member 8 of the electric motor is
supported onva shaft 9 “the upper end of which
is journaled in bearing l0 carried in a web l2
_
'and the lower end of which is journaled in a v
‘35 bearing |3 carried in a bearing housing, |4
so that the bearing between the eccentric and 20
the outside of the tube |9 also serves to support the left end of the shaft 18.v As the shaft l8 1
is turned it is obvious that the roll will be moved‘
laterally with respect to the tube Hi. This lateral
movement of the roll with respect to the tube 5
|9is used toimove the roll toward and away from
the shoe andvis also used to complete the driv
ing connection to the roll'by moving an vinternal
‘gear '39 which is carried by the roll into and out
of mesh with a‘ pinion 40 ?xed to a shaft 4|. 30
The left end of the shaft 4| ?ts in a slot 42 in
a disk 43 ?xed to the tube IS. The right end
of [the shaft 4| is connected to the shaft 25
‘by a ?exible coupling 44‘ which has sumcient
?exibility to permit angular. movement of the
threaded into the lower end of the hollow por; . shaft 4|. The left end of the shaft 4| is normal-1
1y biased by gravity and by the resilience of the
ball l5 which supports the shaft» 9. The web l2, coupling 44 toward the lower end of the slot 42.
which is integral with the housing, forms a clo
When the left end of the shaft is at the lower end
40 sure for the upper end of the electric motor.
of. the slot 42, the pinion 40 occupies a position
The motor shaft 9 projects above the bearing such that it is in mesh with the gear 39 when
l0 and on its projecting _end is cut a worm L5 they roll is pressed against the shoe and is out '
tion 6. The bearing housing l4 carries a thrust
of mesh with the gear 39 when the roll is moved!
away from the shoe. Thus .when the roll is
45 which rotates in a bearing l9a in a tube I9. ' The ' pressed against the shoe it is rotated and feeds
tube I9 is pressed into' or otherwise ?xed in a the material being ironed under the shoe. The
boss 20 in the side wall of the housing |. Inte
teeth on the gears 39 and 40 mesh before full
gral with the worm gear I1 is a pinion 2| which ‘pressure is developed between the roll and the "
meshes with an, idler gear 22 rotatably carried shoe so that the starting load on gear teeth is
which meshes with a worm gear H. The worm
gear |'| vis rotatably supported on a {shaft I8
' 50 on a stub shaft" 23 carried by the side wall of
reduced. The worm gear I1 and the pinion 40,
the housing. The idler gear 22 meshes" with a
gear 24 ?xed to a shaft 25 which is journaled in
the side wall of the ironer'housing. The shaft
25 is used to/;_drive the roll in a manner which
55 will be hereinafter described. A thrust ‘plate 25
turn-in a clockwise direction as viewed in Fig.4.
Theangle of slot 42 is such that the reaction be
tween the teeth, of ‘the gear 391 and the pinion
40 tends to force the pinion downward as viewed
in Fig. 4, aiding in holding the pinion ‘in mesh
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2,112,744
, ?ange on the worm gear to complete a driving
. with the gear. A collar 45 on the pinion 40v en
connection from the worm gear to the shaft l8.
' gages a collar 46 on the gear 39 and limits the
movement of the pinion toward the gear.
.As the gear ,39 is moved into mesh with the
pinion 40, there is a tendency for the teeth to
jam. This tendency is increased by the fact that
the gear 39 is an internal gear, with its teeth ex
tending radially inward, and the pinion 48 is an
external gear, with its teeth extending radially
10 outward. It is, therefore, possible for a pair of
teeth on the pinion 49 to straddle a pair of teeth
on the gear 39, in which case further\\ approach
of the gears would result in serious jamming.
This tendency to jamming of the gear\teeth is
prevented by the yielding mounting of the shaft
4| providedby the ?exible coupling 44. When
the gear teeth strike, the pressure exerted on
the teeth of pinion 40 causes the shaft 4| to be
.moved upward in the slot 42, moving the teeth
on the pinion 40 away from the teeth on the gear
39. During this movement, the rotation of the
pinion 40 causes its teeth to be moved to a posi
tion in which the teeth will not jam as they
mesh, after which the pinion is moved into en
gagement with the gear by the biasing force due
to gravity and the ?exible coupling’ 44.
The eccentric 36 is provided with a pocket 41
which contains grease for lubricating the bear
ing surface between the eccentric and the tube l9,
30 the bearing surfaces between the eccentric and
the sleeve 35, and the bearing surfaces between
the sleeve 35 and the sleeve 34.
The grease is
An odd number of notches are provided so that
when one of the keys 54 fits into one of the
notches 58 the other key is held in its inner posi
tion by one of the teeth 59 between the notches.
When the parts are in the position shown in Fig. 2
the upper key is held in its inner position by a
lever 60 which is pivoted at 6| on the ?ange 62
of a bracket 63 ?xed to the housing-and which. 10
is pulled by a spring 64 against the key. A‘ stop
65 limits the movement of the'lever 68 by the
spring. The lever 60 is provided with a ?ange 66 which engages the arm 53 and ‘prevents move
ment of the arm in a counterclockwise direction 15
as viewed in Fig. 2. The lower key 54 is held in
its inner position by engagement with a trip
lever 61 which is carried on the upper end of
rock shaft 68 journaled on the ironer housing.
The linkage for operating the trip lever is shown 20
in Fig. 4. It comprises a lever 69 pivoted at ‘III
on ,the under side of the table and urged by a
spring 1| against a stop 12. The. lever 69 is
provided with a knee pad '13 so that the lever
can be operated by a sidewise motion of the op 25
erator’s knee. The lever 69 is connected by means
of a link 14 to a crank 15 ?xed to the rock shaft
It is thus apparent that when the knee pad
13 is moved to the right (Fig. 4) the shaft 68
will be pivoted in a counterclockwise direction 30
thereby moving the trip lever 61 away from the
lower key 54 and permitting the spring 55 to force
fed to the bearing surfaces through holes 48 in it outward into engagement with one of the
notches 58, thus completing a driving connection
the sleeve 35 and in the eccentric.
As described above, the pinion 40 is rotated‘ from the worm gear H to the shaft l8. This 35
35
continuously by the worm gear, I‘! and the roll key will now be termed the driving key. As soon
will normally be rotated when it is against the as this driving connection is completed the lever
shoe to feed the material being ironed under the 69- rnay be released and it will be returned to its
shoe. When the machine is used for pressing, 'normal position by the spring ‘H. When the
it is desirable that the roll remain stationary driving key is moved into one of the notches 58, 40
when pressed against the shoe, This is effected the other key is held in its inner position by one
by a stop 49 carried on a ‘rod 50 pivoted in the of the teeth 59. This is due to the fact that
side wall of the ironer housing I. The rod isv the number of notches 5| is odd. The worm gear
pivoted by a hand lever 52 which projects from ' rotates in a clockwise direction as viewed in Fig. 2.
the front of the ironer housing in a position read
ily accessible to the operator. In Fig. 4, the
- lever 52 is shown in the ironing position in which
the stop 49 is at or below the lower end of the
- slot 42 and therefore does not prevent the mesh
ing of the gears 39 and 40. When the lever 52
is moved downward, stop 49 engages the shaft 4|
and moves it to the upper end of the slot 42, inv
which position the pinion 40 is clear of the gear
39 and the roll remains stationary. In this posi
55 tion, the stop 49 serves as a bearing for the shaft
4|.
Obviously it may serve as a bearing for the
shaft 4| when in the position shown in Fig. 4.
The pinion is returned by the force due to gravity
and the coupling 44 to the lower end of the slot
60 42 when the lever 52 is returned to the position
shown in Fig. 4.
4
The roll is moved toward and away from the
shoe by an arrangement for coupling the shaft
l8 to the worm gear |‘| so that the shaft is ro
tated in steps of 180 degrees. The particular
arrangement shown comprises an arm 53 (Fig. 3)
pinned to the shaft l8 which is provided with
After the ?rst few degrees of rotation of the
shaft Hi, the upper key is clear of the lever 69,
and the lever is held against the stop 65 by the
spring 64. As rotation of the shaft‘ l8 nears 180
degrees, the arm 53 strikes the lower edge of the
?ange 66 on the lever 60 and moves the lever
66 in a counterclockwise direction, as viewed in
Fig. 2. When‘ the shaft l8 has rotated throughv
180 degrees the driving key is moved out of the .
notch 58 byv engagement with the ?ange 62 on
the bracket 63, thus breaking the driving con 55
nection to the shaft l8. At this .time, the arm
53 is clear of the lower edge of the flange 66, and
the lever 68 is moved to the position shown in
Fig. 2 in which the ?ange 66 prevents counter
clockwise movement of the shaft l8. The tend
ency to, counterclockwise movement of the shaft
l6 may be due to the breaking of the driving
connection to the shaft before the veccentric
reaches dead center as the roll is pressed against
the shoe, or to the tendency of the roll to turn 65
due to the eccentric pivoting thereof on the tube
l9.
From one aspect, the ?ange 62 is a cam
which positively moves the driving key out of the
keys 54. The keys 54 are urged outwardly by. slot 5|. After the key is moved out of the slot,
it is moved to the inner position bythelever 66. 70
70 springs 55 and the outward movement is lim
ited by the ?anges 56 on a plate 51 fixed to the The spring 64 is not strong enough to move the
arm 53. When the keys are in the inner position driving key out of the notch 58 but is strong
- radial slots in which are slidably carried clutch
shown-in Fig. 3 there is no connection between the
worm gear I‘! and the shaft Hi. When moved
75 outward, the keys cooperate with notches 56 in a
enough to move it inward against the force of the
spring 55 after it has been moved out of the
notch 58 by the ?ange 62. The purpose of the
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' lever 56 is to prevent the key remaining in a’ then lowered. It- is obvious that by changing the
position so close to the slots-58 that it continually shape of the slot 18 the movement of the rollv
clicks against the teeth 59. The lever 66 there
may be varied.
fore in the nature of a follow up device to in
The shoe 3 comprises an arcuate metal plate
crease the spacing of the driving key from the 19 which is heated by suitable electric heating
notches 58. At this time, if the. lever 59 has units (not shown). The upper surface of the
been released, the lever 60 will occupy a'. position plate 19 is covered by a cover 80. The shoe is
in which it. will hold the other key in its inner supported in a suitable manner, for example that
position. It is thus apparent that for each actu , shown in application Serial No. 116,724, ?led Dec.‘
ation of the lever 69 the shaft l8 and the eccentric 19, 1936, by arms iii ?xed to the ironer housing 10
36 connected thereto will be turned through 180 and projecting therefrom between the plate. 19
degrees. If the lever 69 is continuously held to and the cover 80. As far as this application is
the right, the shaft l8 will be rotated contin
concerned any substantially rigid support for the
uously, the driving connection to the shaft being shoe is satisfactory. Likewise,- other means may
15 completed successively by each of the keys“.
be used for moving the rolltoward and away from 15
The trip lever 61 has an upturned end 16 which the shoe.
serves as a stop to limit the movement of the arm
In the use of the ironer the material to be
53 in a clockwise direction as viewed in Fig. 4. ironed is arranged on the roll. The lever 69 is
This tendency to clockwise movement of the arm then moved to the right as viewed in Fig. 4 by
20 may come from overtravel of the shaft l8 due to , pressure exerted on ‘the knee pad 13, moving the
inertia, from friction between the arm and the trip lever 61 away from the adjacent key 54.
worm gear H, or from the pressure exerted 'on the The spring 55 moves the key 54 outward into one
roll by the shoe if the eccentric is moved slightly of the notches 58 in the continuously rotating
past dead center when the roll is pressed against worm gear il thus completing a driving connec
25 the shoe. The stop 16 is a precautionary device
tion from the worm wheel i‘! to the shaft i8.
which is normally not brought into use.
‘
This key will now be termed the driving key. The
It'is desirable that the movement of the roll pressure on the knee pad ‘l3 may now be released,
toward and away from the shoe be effected with
and the trip lever 67 will be returned to its nor
out rotating the'roll. This is accomplished by mal position by the spring ‘H. The shaft i8 ro
30 providingv the intermediatesleeve 35 between the
tates through 180 degrees at which time the driv
eccentric and the sleeve 34 and by providing a ing key is pushed inward to disengage the driv
,tongue W on the sleeve 35 which ?ts in a radial ing connection by ‘engagement with the ?ange 52
slot 18 in a disk 43. The radial slot 18 is lo
on the bracket 63. Since the lever 69 has now
cated so that as the eccentric is rotated the roll been returned by the spring ‘II [to the position
35 is moved directly toward and away from the shoe shown in Fig. _4, the other key 54 is held in its
without any substantial turning movement. As
the roll moves toward the shoe, the tongue Ti
slides in the slot 18. The movement of the sleeve
35 and the roll carried thereby can best be de
40 scribed as a pivotal movement about the tongue
‘ll. During the ?rst part of the movement the
sleeve 35 is pivoted about tongue 11 in a counter-,
- clockwise direction, as viewed in Fig. 4, until the
eccentric hassturned 90 degrees from the position
shown. During the next 90 degrees of turning of
the eccentric, the sleeve 35 is pivoted in a clock
tric 36 through 180 degrees, thus pressing the ‘
mesh with the pinion. 46. When the ironing op
eration is completed the lever 69 is again pushed
to the right and the shaft (8 is rotated through
180 degrees in the manner described above. At 45“
the end of this movement the roll is away from
the shoe and the parts occupy the position shown
centric and then swung downwardly about tongue
‘ll during the second quarter ofvthe movement
~
roll) against the shoe and completing a driving 40
connection to the roll- by moving the gear 39 into
in Fig. 4.
55 the ?rst quarter of the movement of the ec
30
shaft iii-through an angle of 180 degrees from
the position shown in Fig. 4 will turn the eccen
the same movement as the sleeve 35 until it con
the shoe and by the completion of the driving
connection to the roll which starts the rotation
of the roll. While moving toward the shoe, the
roll is swung upwardly about tongue TI during
26
inner position by the lever 61. Rotation of the
wise direction aboutthe tongue TI. The roll has
tacts the shoe at which time such movement is
50 prevented by the friction between the roll and
20
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If the ironer is to be used for pressing, the
lever 52 is moved downward from the position 50
shown in dotted lines in Fig, 2, lifting the shaft
4| to a position in which the pinion 40 is out of
mesh with the gear 39, breaking the ‘driving. con-'
nection to the roll.
This application is an improvement upon ap
plications S. N. 116,724, ?led December 19, 1936,
and S. N. 64,480, ?led February 18, 1936, in which
of the eccentric into engagement with the shoe. ' the construction for driving and supporting the
While moving away from the shoe, the roll is
60 ?rst swung downwardly about the tongue 11 dur
ing the ?rst quarter of the movement of ;the ec
centric and then upwardly about the tongue 11
during the second quarter of the movement of ‘
the eccentric. During the movement of the roll
toward the shoe, the roll appears to be ?rst
lifted and then moved downward into engage
ment with the shoe. During the movement of
the roll, away from the shoe, the roll appears to.
be ?rst lowered and then raised.
What I claim as new and desire to secure by
Letters Patent of the United States is:
1. In an ironing machine, a ‘shoe, a roll, a
driving pinion, means for shifting the roll against
and ‘away from the shoe, an internal gear car
ried by the roll and movable therewith into and
out of mesh with said pinion, and means for se
lectively moving said pinion to a position in which
If the direc- , it will not engage said gear whereby the roll
tion of rotation of the eccentric were reversed it
75
roll and for effecting engagement and separation .
of the pressing members is being claimed broadly. 60
is apparent that “during the movement of the roll
toward the shoe, the roll would ?rst be lowered
and then‘ lifted into engagement with the shoe
and that during the movement of the roll away
from the shoe the roll would ?rst be lifted and _
remains stationary when against said shoe.
2. In an ironing machine, a shoe, a roll,‘means
for shifting the roll against and away from the
shoe, an internal gear carried by the roll and
movable therewith, a power shaft, a second shaft
connected: thereto by a ?exible coupling, a pinion‘
70
2,112,744
on second shaft, said second shaft being biased
to a position in which the pinion is in mesh with
the internal gear when the roll is against the
shoe, and means for shifting the second shaft to
(II a position in which said pinion is out of mesh
with the internal gear when the roll is against
the shoe.
‘
3. In an ironing machine, a shoe, a roll, means
vfor shifting the roll against and away from the
shoe, an internal gear carried by the roll and
movable therewith, a power shaft, a second shaft
connected thereto by a ?exible coupling, a pinion
on second shaft, said second shaft being biased
to a position in which the pinion is in mesh with
the internal gear when the roll is against the
shoe, and means including a stop engaging said
second shaft for moving the shaft to a position
in which the pinion is out of mesh with the in
ternal gear when the roll is against the shoe.
4. In an ironing machine, a shoe, a roll, means
for shifting the roll against and away from the
shoe, an internal gear carried by the roll and
movable therewith, a power shaft, a second shaft
connected thereto by a ?exible'coupling, a pinion
on second shaft, said second shaft being biased
to a position in which the pinion is in mesh with
the internal gear when the roll is against the
shoe, means for moving said second shaft an
gularly with respect to the power shaft to a po
sition in which the pinion is out of mesh with the
internal gear when the roll is against the shoe,
and a guide for guiding the movement of the sec-' .
0nd shaft.
5. In an ironing machine having cooperating
pressing members including a roll, a power shaft,
a second shaft substantially parallel to the roll
axis and connected to the power shaft by a flex
ible coupling, a pinion on the second shaft, a gear
carried by the roll meshing with said pinion,
and means for shifting said second shaft to a ‘po
sition in which the pinion is out of mesh with
said gear for breaking‘ the'driving connection to >
the roll.
6. In an ironing machine having cooperating
pressing members including a roll, an internal
l5
gear carried by the roll, a power shaft, a second
shaft substantially parallel to the roll axis and
connected to the power shaft by a flexible cou
pling, a pinion on the second shaft extending '
within the internal gear, means for e?ecting en
gagement and separation of the pressing mem
bers and as a part thereof effecting movement of
the internal gear into and out of engagement
with the pinion, and means‘for shifting the sec,
ond shaft to a position in which the pinion is
out of mesh with the internal gear for breaking
the driving connection to the roll when the press
ing members are in engagement.
GEORGE W. WARDWELL, JR.
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