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Патент USA US3024567

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March 13, 1962
M. Av FRENKEL ET AL
3,024,557
AUTOMATICALLY CONTROLLED HEAT TRANSFER IMPRINTER
Filed Aug. 17, 1959
6 Sheets-Sheet 1
Maf‘ch 13, 1962
M. A. FRENKEL ETAL
3,024,557
AUTOMATICALLY CONTROLLED HEAT TRANSFER IMPRINTER
.Filed Aug. 17, 1959
6 Sheets-Sheet 2
36
March 13, 1952
M. A. FRENKEL ETAL
3,024,557
AUTOMATICALLY CONTROLLED HEAT TRANSFER IMPRINTER
Filed Aug. 17, 1959
6 Sheets-Sheet 3
March 13, 1962
M. A. FRENKEL ETAL
YY3,024,557
AUTOMATICALLY CONTROLLED HEAT TRANSFER IMPRINTER
Filed Aug. 17, 1959
6 Sheets-Sheet 4
38
26
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March 13, 1962
M. A. FRENKEL ET A1.
3,024,557
AUTOMATICALLY CONTROLLED HEAT TRANSFER IMPRINTER
Filed Aug. 17, 1959
6 Sheets-Sheet 5
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March 13, 1962
M. A. FRENKEL ET AL
3,024,55 7
AUTOMATICALLY CONTROLLED HEAT TRANSFER IMPRINTER
Filed Aug. 17, 1959
6 Sheets-Sheet 6
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270
274C
2745
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INVENTORS
United States Patent @dice
.sul
3,924,557
Patented Mar. 13, 1962
2
FIG. I() is a view taken substantially on the line 10~-10
3,024,557
of FIG. 8;
FIG. 1l is a view taken on the line 11-11 of FIG. 8;
AUTOMATICALLY CONTROLLED HEAT
TRANSFER DVIPRINTER
FIG. l2 is a View taken on the line 12-12 of FIG. 8;
Marvin A. Frankel, Huntington Woods, Mich. (901 W.
Lafayette, Detroit 26, Mich.), and Raiph M. Burton
Grosse Pointe, Mich.; said Burton assigner to said
FIG. 13 is a schematic diagram of the electrical control
circuit for each of the machines shown in FIG. 1;
Frenkel
FIG. 14 is a cross sectional view taken on the line
14~-14 of FIG. 8;
Filed Aug. 17, 1959, Ser. No. 834,008
5 Claims. (Cl. 156-359)
This invention relates to the imprinting of socks, stock
ings, hose, or the like, hereinafter referred to as stockings,
with information such as trademarks, size, and washing
instructions, or with a decorative design.
FIG. 15 is a side View of the ribbon brake assembly
lO taken on the line 15-15 of FIG. 8; and
FIG. 16 together with FIG. 7 is a schematic diagram of
the electrical control circuit for the machine of FIGS.
8-12, inclusive, and 14 and 15.
FIGS. 1 and 2 show alternative layouts for imprinting
It is conven
tional practice in the manufacture of stockings to place
stockings on heat board conveyors.
each stocking on what is »termed a heat board with heat
then being applied to the stocking either from an external
tion of arrow A by an electric motor 216 with a plurality
of heat boards 22 mounted upon the belt and upstanding
source or by internal heating of the heat board, to cause
pressing of the stocking to the shape of the board. Dif
ferent size boards are provided for different size stockings.
therefrom at intervals spaced therealong. The heat board
conveyor and the means for mounting the heat boards
thereon is conventional and need not be further described.
Instead of a belt type conveyor, the heat boards may be
mounted at the marginal peripheral portion of a circular
rotatable table. Such mounting of heat boards is also
Thereafter the stockings are removed from the heat
boards and hand stamped with a decal transfer and a
heated iron to imprint the stockings.
The primary purpose of the invention is the elimination
of hand labor presently involved in the application of decal
transfers to stockings `by substituting for such hand appli
cati-on automatic mechanized imprinting of the stockings.
Another object of the invention is the automatic im
The conveyors are
schematically represented by a belt 20 driven in the direc
' conventional.
While on the heat boards the stockings are
heated as by the heat boards passing through an oven
like enclosure (not shown) or the heat boards may be
internally heated. With the application of heat to the
printing of stockings while they are still on the heat
stockings on the heat boards they are pressed to the shape
boards.
30 of the boards. According `to the invention, after pressing,
Another object of the invention is the provision of
and before removal of the stockings from the heat boards,
means for steadying and supporting the heat boards during
they are stamped with a decal transfer or with a succes
the imprinting operation.
sion of decal transfers. For example one transfer may
Another object is the provision of a machine which
indicate the size of the stocking, another transfer the trade
will automatically sense the presence of a heat board and 35 mark, another transfer washing instructions, etc. For this
be actuated thereby to imprint a stocking on the board.
purpose the heat board conveyor passes by or through
Another object of the invention is the provision of an
one or more imprinting machines.
automatic stocking imprinter which will automatically
In FIG. l a plurality of imprinting machines are in
sense the sizes of successive heat boards passing through
dicated by block diagrams at 9, 91/2, 10, and 101/2, which
the imprinter and select and imprint the proper numerical 40 might be representative of stocking sizes which the irn
size on a stocking on each such heat board.
printers imprint on stockings of such sizes. For example,
Another object of the invention is the provision of an
a No. 9 heat board will carry a size 9 stocking and as the
automatic stocking imprinter which will automatically
size 9 heat board reaches the imprinting machine indi
adjust itself to different size heat boards so as to imprint
cated at 9 in FIG. l, such machine will serve to imprint
information on various size stockings at a uniform posi 45 the No. 9 size on the stocking on the heat board. There
tion on each stocking.
after the heat board and stocking will pass by machines
Other objects, advantages, and meritorious features
91/2, 19, and lill/2 without actuating them. As many
will more fully appear from the following description,
different imprinters as desired may be arranged along the
claims, and acc-ompanying drawings, wherein:
path of travel of the heat board conveyor to imprint all
50
FIG. 1 is a top schematic representation of a heat board
of the possible stocking sizes which might pass along on
conveyor such as Will be found in use in hosiery mills with
the heat board conveyor. In addition, imprinting ma
one form of the invention, shown in block diagrams asso
chines for transferring trademark decals, washing in
ciated therewith;
FIG. 2 is -a top view similar to FIG. l but showing an
other form of the invention;
structions, and the like might also be arranged along the
55 heat board conveyor either before or after the stocking
size imprinting machines.
FIG. 3 is a cross sectional view taken on the line 3-3
In FIG. 2 are shown but two machines indicated at
of FIG.- 2 schematically showing the mechanical details of
a and b.
one form of the invention;
of FIG. 3;
Machine a is operative to repetitively imprint
a standard decal, such as a trademark decal on each
FIG. 4 is a cross sectional view taken on the line 4-~4
60
stocking passing by it. Machine b is adapted to imprint
the size of the stocking. Machine a is shown in FIGS.
FIG. 5 is a detail view looking down on the platen and
3-6 while machine b is shown in FIGS. 9-13. The ma
back-up presser pad in the direction of arrow 5 in FIG. 3;
chines indicated at 9, 91/2, 10, and 101/2 in FIG. l are
FIG. 6 is a cross sectional view taken substantially on
very similar to the machine shown in FIGS. 3-6 with
line 6-~6 of FIG. 5;
certain changes as noted hereinafter. In view of the fact
65
FIG. 7 is a schematic electrical diagram of the control
that machine a of FIG. 2 is the basic structure, it will be
circuits for the invention of FIGS. 3-6;
ñrst described.
FIG. 8 is a top schematic representation of a modified
The machine shown in FIGS. 3-6 is adapted to transfer
form of lthe invention disclosing an imprinter for auto
decalcomania transfers from a decalcomania ribbon to
matically printing different stocking sizes;
FIG. 9 is a front view of the structure shown in FIG. 8
taken substantially along the line 9_9 of FIG. 8;
stockings passing through the machine. As the size of
the stockings to be imprinted may vary from one heat
board to the next, the machine is constructed to adjust it
3,024,557
its movement and cause the platen to be resiliently held
self to the various size stockings so that each transfer is
imprinted at a uniform location on each stocking.
against the stocking.
The
The motor 38, heretofore mentioned, which serves to
drive roller 36, is mounted in any suitable fashion upon
the carriage 44 and through a belt or the like 90 drives
the roll 36, The roll 36 is supported at opposite ends be
size of the stocking which necessitates adjustment of the
position at which the transfer is applied is the length of
the stocking which, when mounted on the heat board, is
measured vertically and for this reason` the machine is
adjustable vertically to imprint the decals in accordance
tween a pair of arms 92, only one of which is shown.
The aXle for the roller is provided with a suitable pulley
94 about which the 'belt 90 is entrained. The ribbon is
with the Vertical length of the stockings. As shown in
FlG. 3, the machine includes a heated platen 30 which is
guided in front of the platen 30 by a pair of rollers 96 and
located adjacent the path of travel of the heat boards, one
9S.
of which is indicated at 22, on the heat board conveyor
Roller 96 is mounted on an arm 100 secured in any
suitable fashion to the member 7S. Roller 98 is supported
Ztl. The platen is electrically heated from any suitable
by an arm 192 secured to the member 54. Rollers 96 and
source of power (not shown). The platen is supported
9S are so positioned with respect to the platen when the
for reciprocation toward and away from the path of travel
of the heat boards. It is also supported for vertical 15 same is in the retracted position shown in FIG. 3 that the
ribbon will be slightly spaced therefrom While upon ener
movement alongside the path of travel of the heat boards.
gizatiou of solenoid S0 the platen will be carried against
Disposed directly opposite the platen 3u is what may be
the ribbon, which will be deñected as shown in FIG. 6.
termed a firm-soft backup or pressure pad 32. Such pad
The stock roll of ribbon 34 is supported, as is roll 36,
is shiftable vertically synchronously with vertical move
ment of the platen and serves to support the heat board 20 between a pair of arms 104, only one being shown, which
are secured to and extend laterally from the member 52 of
and prevent tilting thereof at the time the platen is shifted
carriage 44. Between the roller 98 and the roll 34 is a
toward the path of travel to impress a decal against a
ribbon brake 196. The brake includes a solenoid 108
stocking on a heat board disposed between the pressure
mounted on the lower end extension 110 of the member
pad and the platen. Supported for movement across the
56. The plunger of the solenoid is provided with a rub
face of the platen is a decalcomania transfer ribbon indi
ber-like or soft pad 112 which, upon energization of the
cated at R. The ribbon is provided in a stock roll 34
solenoid is retracted from the ribbon while upon de-ener
from which it is drawn and wrapped upon a roll 36
gization of the solenoid pinches the ribbon between it and
driven by a motor 3S.
»a backup pad 114 also of rubber-like or soft material and
More particularly the imprinting machine of FIG. 3
carried by a bracket 116 mounted at the lower end of
is mounted on a base plate or table 4G over which the 30
member 52 of the carriage 44.
heat board conveyor runs. A pair of opstanding posts
Disposed between the ribbon brake and the roll 34 is
42 and 43 are mounted in spaced-apart relation along
an electric eye assembly including an exciter lamp 118
the path of travel of the heat board conveyor and serve
and a photoelectri-c cell 120 carried by an arm 122’ se
to carry for vertical movement a carriage assembly 44.
cured in any convenient fashion to the housing of the
solenoid 10S. Upon interruption of the light beam from
lamp 11S `by the presence of a decal transfer between the
lamp and cell 125), the brake 106 is de-energized to stop
The carriage assembly includes three bearing blocks 46,
4S, and 5u received in vertically sliding relation upon
each of the posts 4.2 and 43. Secured to and extending
between the bearing blocks are vertically extending mem
ers 52 and 53. Member 52 is provided withl a laterally
extending platen support 54. Webs S6 and 58 serve to
movement `of the ribbon and at the same time the elec
tricity to the motor 3S is interrupted. The distance be
tween the photoelectric cell 120 and the platen 30,
measured along the ribbon R, is such in relation to the
spacing of the decal tnansfers on the ribbon, that upon
de-energization of the brake by the presence of a decal
between the exciter lampl and the photoelectric cell, a
decal transfer is disposed immediately in front of and in
alignment with the platen 3i).
The carriage 44 is vertically shifted upon the posts 42
rigidify the support 54.
As shown in FlGS. 5 and 6, support 54 is provided at
the outer end with an upright member 56 carrying a pair
of platen supporting rods 62 and 64.
Slidably mounted
on the rods by sleeve bearings 58 and 60 is a cross mem
ber 66. The cross member is reciprocated toward and
away from the support 54 by an arm 68 secured thereto
at one end and pivotally connected as at 70 to a vertical
a spring 82 connected between the lever 72 and the
and 43 by a screw threaded shaft 122 which is threadedly
received through an internally threaded member 124 se
cured to the carriage. Shaft 122 is rotatably driven by a
motor 126, mounted on the `base plate 40, through a heli
cal gear 128, mounted on a shaft 132, which meshes with
a similar gear 130 on the shaft 122. The shaft 132, which
is driven by motor 126, extends beneath the heat board
conveyor 120 as lshown in FIG. 3. Upon rotation of shaft
132 in one direction, the rod 122 will be rotated to raise
the carriage 44, while upon rotation of the shaft 132 in the
bracket 76 serves to retract the cross member away from
opposite direction, the carriage will be lowered. Motor
lever ’72.
The lever 7‘2 is pivotally mounted at 74 (see
FIG. 3) upon a lever bracket 76 depending from a sup
port 78 which is carried by member 52. The upper end
of lever 72 is pivotally connected to the plunger of a sole
noid 8G.
Upon energization of the solenoid, its plunger
moves in the direction of arrow S causing the cross mem
ber 66 to be shifted toward the path of travel of the heat
board conveyor. Upon de-energization of the solenoid
the path of travel of the heat board conveyor.
Resiliently supported by a pair of V-shaped springs
126, for this purpose` is a reversible direct current motor.
60
At that side of the heat board conveyor opposite the
carriage 44 are a pair of upstanding posts 134, only one
84 and 86 upon the cross member 66 is the heated platen
of which is shown, which carry the firm-soft pad 32 for
3S. The platen is provided with a heater wire the ends
vertical movement. Received on each of the posts 134 is
of which are indicated at 86 and 8S in FIG. 6.
a slidable bearing 136 between and upon which is
Electrically heated platens are of many different con
structions and need not be described in detail except to 65 mounted a solenoid 138. Mounted upon the outer end of
the plunger 140 of solenoid 138 is the firm-soft pad 32.
note that the wire whose ends
and 88 are shown in
The outer end of the plunger is recessed to slidably receive
FlG. 6 is disposed within the platens to heat the same
and support a stem 142 secured to the firm-soft pad. A
upon the passage of an electric current through the wire.
pin 1154 extends laterally through the plunger 14() and be
Upon euergization of solenoid S the platen 3@ is carried
toward the path of travel of the heat board conveyor.
tween such pin and the ñrm~soft pad, and encircling the
plunger, is a lightweight spring 146. Means, not shown,
lf a .heat board 22 with a stocking ST received thereover
limit outward movement of the íirm>soft pad relative to
is in front of the platen, the platen will carry the decal
ribbon R against the stocking. The springs 84 and 86
allow the plunger of solenoid Si! to shift to the limit of
the plunger lfsíì under the urging of the spring 146. Upon
energization of solenoid 138, the plungerll40 is shifted
toward the path of travel of the heat board conveyor and
3,024,557
urges the firm-soft pad against `a stocking on a heat board
disposed between the pad and the platen. The spring 14€)
serves to allow the plunger of the solenoid to complete
6
will, through the feedback control hereinafter to be de
scribed, maintain the platen carriage at the position shown
ín FIG. 3.
The control system is schematically shown in FIG. 7.
A source of electric power at, for example, 220 volts A.C.,
platen actuating solenoid S0 are wired in a control circuit
feeds into the system through the leads 19t) and 192 and
in such fashion that both are energized and de-energized
by a transformer 194 is stepped down to llO volts. The
simultaneously.
llO-volt current through the leads 196 and 198 is there
The firm-soft pad is vertically shifted on the posts 134
after fed to a series of branch circuits. To facilitate
by a vertically extending threaded shaft 148 which is 10 a description of the control system and its effect upon the
threadedly received through a block 150 secured to and
control of the mechanism shown in FIGS. 3_6, the platen
between the bearings 136. Rod 143 is provided with a
carriage, shown in FIG. 3, will be assumed to be at a
helical gear, not shown, which meshes with a helical gear
size 91/2 position, while if the carriage ascends to con
152 adjacent the end of shaft 132. The end of shaft 132
tact switch 184 ít will be assumed -to be thereafter in the
is supported by a bracket 154 mounted on the base
size
10 position, while if it descends to contact with
plate 40. The thread pitch of helical gears 128 and 152
switch
13€? it will be assumed thereafter to be in the
is the same .as is the thread pitch of the threaded rods 122
size 9 position; such positions being appropriately indi
and 148, As a result the platen Sii and the hrm-soft pad
cated by arrows in FIG. 3.
32 move vertically synchronously and are constantly op
its stroke and hold the firm-soft pad resilientiy against the
stocking. The solenoid 138 of the firm-soft pad, and the
L'.
posite each other.
The imprinter shown in FIGS. 3-6 is adapted to trans
fer decals from the ribbon R at the same location relative
At the position of the carriage shown, the normally
closed contacts 132a of switch 132 are held open by the
tripper linger 186 while normally open contacts 182|J are
heid closed. The ribbon drive motor 3S will be assumed
to be operating and the heat board conveyor will be as
sumed to be operating. If the heat board having the
next stocking to be imprinted carries a designato-r or size
peg for a size 10 stocking, i.e., a designator peg located as
at 174, when such peg contacts switch 168, it closes the
to the size of the stocking >on each stocking that is
stamped by it or, in other words, if a trademark is to be
impressed on the stocking one inch below the toe thereof,
the machine will automatically adjust itself to imprint the
trademark one inch from the toe whether the stocking be
a size 8 or a size l2, by vertical adjustment of the platen
normally open switch contacts 168a energizing relays R-l
and the transfer ribbon. The toe of the stocking repre
sented at T in FIG. 3 is at the upper end of the heat board 30 and R~5, which by the opening of the normally closed
enslaved relay switch contacts R-Sa stops the conveyor
while the cuit thereof indicated at C is at the lower end.
motor 26. Relay R-i causes energization of the platen-up
For purposes of description, the impriuter of FIGS. 3-6
switch 290, which energizes the. direct current platen mo
is capable of shifting between three vertical positions to
tor 126 to cause it to rotate shaft 132 in a direction rais
correspond to three different sizes of stockings that may be
ing the platen carriage 44. As shaft 132 raises the platen
imprinted. A great many more different sizes may be
carriage it will concurrently cause ascent of the firm-soft
printed as will be apparent as the description proceeds.
To eifect the automatic adjustment of the imprinter,
the control system includes a size-sensing unit 161D shown
in FIGS. 3 and 7 disposed adjacent the path of travel of
the heat board conveyor. The unit comprises an upright
member 162 carrying three switches 164, 166, and 168 dis
posed in vertically spaced-apart relation and each adapted
to be tripped by a size-indicating peg or the like exten -`
ing laterally from the heat boards. The position of the
pad 32.
When the platen carriage reaches the size 10 position,
the tripper iinger 136 actuates switch 184 opening nor
mally closed contacts 184EL to (ie-energize relay R-l which
in turn stops the platen elevation motor 126 by de-ener
gizing the holding relay RI-Iz which in turn causes de
energization of the platen~up switch 20€! to break the
circuit to motor 126. During this time the ribbon has
run to a point where a decal breaks the light beam be~
peg of each heat board will determine the size of the
45 tween the exciter lamp 118 and the photoelectric cell 120
board or, in other words, the size of the stocking carried
causing the photocell controlled relay switch RC to close,
by the board. For example, the peg shown in solid
energizing relay 11A-4 and in turn rie-energizing the ribbon
outline in FIG. 3 at 171i adapted to strike the actuating
brake 166 and the ribbon drive motor 38.
arm of switch 168, and which is mounted on the heat
With relay slave switches R-f-ib, R-5b, and R-óa closed,
board shown, will indicate a size 9 heat board while the 50
time delay relay ’TD-1 is energized in turn closing en
pegs 172 and 174 will indicate, respectively, sizes 91/2
slaved switch "ID-1a which energizes the platen and pres
and l0, and will be mounted on other heat boards. It
sure pad solenoids, respectively, solenoids Si) and 138,
will ybe observed that the pegs are vertically spaced at
until the time delay relay TD4 times out after approxi
different heights above the heat board conveyor so that
all heat boards having a peg at the height of the peg 170 55 mately five seconds or whatever length of time `the relay
has been set for to ensure proper decal transfer to the
will trip switch 168 while all heat boards having pegs
stockings. At the instant time delay relay TD-l times
at the height of 'peg 172 will trip switch 166, etc.
out, it closes enslaved switch 'PD-1b to energize time
The control system also includes a carriage position
delay relay "FD-2 which immediately closes its enslaved
sensing unit generally indicated at 176 and comprising
an upright member 178 carrying three switches 13%, 182, 60 switches TD-Za and 'ID-2b, energizing the ribbon motor
3S, brake solenoid 106, and the conveyor motor 26 for
and 184. These switches are adapted to be tripped by a
approximately two seconds giving the ribbon suñicient
tripper finger 186 extending laterally from the platen
time to move the decal mark out of the light path to the
carriage 44. These switches serve, in combination with
photoelectric cell and the heat board selector peg out of
the size-sensing unit, to stop the platen carriage at the
contact with the switch 16S. Time delay relay Fl`D-2
proper height to imprint the decal at the correct position
then times out opening its enslaved switches. However,
for the stocking size is sensed by the unit 161i. Switches
because RC is now open and R-4a and R-Sa are closed,
180, 182, and 184 are connected in a feed-back control,
the ribbon motor 38, conveyor motor 26, and brake
part of the complete control system, so that if the platen
is at the position shown in FIG. 3 contacting switch 182
solenoid will remain energized. With the ribbon motor
and at this position the. platen will stamp a No. 91/2 size 70 and conveyor motor now running, the cycle is ready to
repeat.
stocking, and the next heat board to be stamped indicates
a size l() stocking, the platen carriage will rise, while if
Now assume that the next heat board size peg calls
the succeeding heat board indicates a size 9 stocking,
for a size 9 stocking to be imprinted. This would be
the platen will descend. If the succeeding heat board
peg No. 17€). As such peg trips switch 164 it will cause
indicates another size 9%/2 stocking, the platen carriage
energization of relay R-3. Relay R-S will close its
3,024,557
enslaved switches R-Sa and llt-3b which will cause the
platen-down switch 202 to be shifted to close the circuit
to the platen elevation motor 126 to operate the same
in a direction causing the platen carriage 4e to descend.
When the finger 186 on the platen carriage 44 actuates
switch 180 as the carriage reaches the lower end of its
travel, it causes contacts lidi)ou to be opened deenergizing
relay R-3 and opening enslaved switches R-Sa and R-Sb
to break the circuit to the motor direction control switch
262 to (le-energize motor 1.26. Normally open switch
contacts ïSÜb will be closed by the finger 135 contacting
some tive seconds later, or after `whatever time interval is
required to stamp the stocking, will open its enslaved con
tacts Tij-2c and close ’TD-2b and "ID-2d. This will
start the ribbon motor, heat board conveyor motor and
de-energize the solenoids titl and i3d. Time delay relay
TD4. holds contacts TD-Zc open and contacts rl`D-2b
and TD-Zd closed for approximately two seconds and
thereafter allows t.em to return to their initial positions.
ln this two-second interval the ribbon and heat board
conveyor will have moved sufficiently so that subsequent
closing of 'YD-2c and opening of 'FD-2b and 'TD-2d will
switch lSS and will energize relay R~6 to close enslaved
not interrupt the cycle.
switch R-da. With enslaved switches R-‘Sb and R-llb
also closed, time delay relay TD-l is energized closing
enslaved switch TD-la causing energization of the platen
the next decal will interrupt the light lbeam from lamp
As the ribbon continues to move
lay RC and closing the contacts thereof to complete the
it will be noted ‘from an inspection of FIG. 7 that the
used in FlG. l will contain a decal transfer ribbon
having the numerical size which is to be printed on a
il@ thereby energizing the photoelectric cell operated re
circuit to relay R-éi -which in turn opens contacts lil-4a to
and firm-sott pressure solenoids 80 and 138, respectively,
tie-energize the ribbon motor 33 and ribbon brake sole
to stamp the decal ribbon against the stocking on the heat
noid lilo. The ribbon is now positioned for the next im
board. At this time, time delay relay TD-l will time
printing opcration. When the next size 9 heat board ap
out closing enslaved switch rfD-lb and this will energize
time delay relay TD-2 to start its timing cycle. From 20 proaches the imprinter, its designator peg will contact
switch 16S and the imprinting cycle will repeat.
this point the cycle continues as above described.
lt will be understood that each of the imprinters
if the next heat `board also indicates a size 9 stocking,
platen carriage will not shift, but other than this cycle
will repeat as aforesaid.
lt will be noted that the ascent or descent of the platen
carriage 44 will be controlled by the size of the heat
board, which is indicated by the position of the selector
selected size stocking on the heat boards passing through
the imprinter, and that each imprinter will print only one
size stocking. However, in FIG. 2 the imprinter indi
cated in the diagram at B is capable of imprinting a variety
of sizes and is automatically operable to sense the size
or designator pegs on the board. It will also be apparent
to those skilled in the art that by adding additional branch 30 stocking, or rather the size heat board, moving along
»on the heat board conveyor and imprint the proper
circuits to the schematic diagram of FIG. 7, the machine
size number on each stocking. Such imprinter is shown
may be adapted to imprint decals on a wide range of
in FIGS. 8-l2, inclusive. The imprinter includes a base
stocking sizes.
plate ¿lila similar to plate 40 heretofore mentioned, up
Considering FIG. l where a plurality of imprinters are
arranged at spaced intervals along the heat board con 35 wardly from which stands the structure shown in FIG.
veyor, with each imprinter adapted to print a specific
numerical size on stockings passing by on the heat board
conveyor, each imprinter will select only the size heat
board which has on it the size stocking that such im
printer is adapted to imprint, and will imprint its nu
merical size on only such size stockings. Each of these
imprinters is generally similar to the imprinter shown in
FIG. 3 and heretofore described but differs therefrom in
the following respects. The platen elevation motor 126
is eliminated as there is no necessity for an automatic
vertical adjustment of the platen carriage 44.
The upper
14», which is, for the most part, similar to the structure
of FlG. 3, and a repetitious description of such structure
as is common to the two figures is unnecessary.
Also
upstanding from plate ¿ila is a decal transfer ribbon
supporting assembly which, in the illustrative embodiment
shown in FlG. 9, is adapted to support seven decal trans
er ribbons. The ribbons are withdrawn from individual
spools 2545„ 2541„ etc., mounted on an upstanding spool
rod 256. The lower end of the rod is received in the
base plate 40a as shown in FlG. l1 while the upper end
is supported by reception through an inverted L-shaped
end of the threaded shaft 122 is provided with a screw
bracket 258. A spacer 260 spaces the spools above the
driver-receivingr slot 250. By screwdriver adjustment of
the shaft 122, the vertical height of carriage 44, as well
as the vertical position of the ñrm-soft pressure pad 32,
path of vertical travel of the platen 30a and the upstand
plate fitta.
The ribbons are led from the spools 254, between
may be adjusted so that the numerical size to be irn
ing heat boards on the conveyor 2t) by rollers 259 and
printed will be properly located on the particular size
stocking. The size-sensing unit le@ associated with each
imprinter will contain but one of the switches 164, 166,
261, and on to take up spools 262,1, 2621„ etc., mounted
and 168. Such switch will be located at a »position to
be contacted by that heat board peg which is at a loca
tion indicating that the proper size stocking is being prc
sented to the imprinter Ifor imprinting. All heat boards
of a diiierent size will pass by the sensing units not set
up to be actuated by them.
FIG. 13 is a schematic representation of the electrical
control circuit for the modified FIG. 3 imprinter as dis
cussed in the preceding paragraph. Instead of the three
switches in the size-sensing unit 1‘60, only one switch
168 is shown. lf the imprinter is to imprint a size 9
stocking the switch would be so located that only pegs
disposed above the heat board conveyor at the height
of peg E76 would actuate the switch. Upon actuation of
the switch, contacts 16Sa and 1681, will be respectively
closed and opened, and assuming a decal on ribbon R is
interrupting the light vbeam to the photoelectric cell so
that photo-relay RC is closed and relay R-4 energized
withV its enslaved contacts R-flb also closed, the solenoids
Sil and T135 will be energized to stamp the stocking. Time
delay relay rFil-2 is also energized, and upon timing out
on a vertical shaft 264 supported at the upper end by
a bracket 2&6 and received at the lower end within the
plate 40a. The spools 262m 2621„ etc., are frictionally
slip driven by the shaft 264. A motor 38;, mounted on
bracket 266 drives the shaft 265i through a belt drive
26S or the like. The friction drive between the shaft 264
and the take-up spools is such that upon energization of
motor 33a, the shaft may rotate relative to those spools
whose ribbon is held against take~up by a ribbon brake
ltlâa while that spool whose ribbon is not so held is free
to revolve with the shaft.
The ribbon brake assembly N6, is shown in FÍGS. 8
and l5. It includes two upstanding L-shaped brackets
270 and 272 each carrying a plurality of solenoids 274.
Each solenoid is disposed directly opposite one of the
ribbons with the solenoids on bracket 274i being indicated
at 2742„ 274C, 274C, and 274g, while those on bracket
2'72 are solenoids 271th, 274 , and 274,- with the solenoid
bracket 27€) disposed opposite alternate ribbons from the
solenoids on bracket 272. Each solenoid has a plunger
27d shiftable away from the opposed ribbon upon ener
gization of the solenoid and shiftable toward the ribbon
by a compression spring 273 upon de-energization of thc
3,024,557
10
solenoid. One end of :the spring is anchored to the sole
noid housing and the other to the plunger. Each plunger
has a resilient pad 280 secured to the head thereof which
is adapted to pinch the ribbon against a back-up pad
282. A back-up pad for each ribbon is provided with
one pad opposite each solenoid plunger. The back-up
pads are mounted on two upstanding L-shaped brackets
284 and 286. When the ribbon drive motor 38a is ener»
gized to retract its brake pad from the opposed ribbon
and such ribbon is thereupon free to move to bring a
closed and this in turn energizes ribbon drive motor 38a
and brake solenoid 274e to cause retraction of the plunger
of solenoid 274e to the position shown in FIG. 15 to re
lease ribbon R9 and allow it to be wrapped upon the
take-up spool 262e. When time delay relay TD-l timed
out, of course, 'FD-1a opened to de-energize the platen
solenoid 30 and pressure solenoid 138.
The time in
terval during which TD~2 holds its enslaved switch
TD-Zb closed is long enough so that the decal on ribbon
R9 is moved out of the path of light from exciter lamp
306e to the photoelectric cell 292e opposite it, and subse
quent timing out of TD-2 opening TD-Zb will not alîect
continued running of ribbon motor 38a as RC is now
open, R-4d energized, and R-4,a closed. However, as
fresh decal transfer into stamping position between the
vertical path of travel of the platen and the path of heat
board travel, the ribbon brake is released on that ribbon
which has just previously been stamped so that the ribbon
may be indexed to bring a fresh decal into position for 15 soon as the next decal on ribbon R9 interrupts the light
subsequent stamping.
Disposed between the ribbon brake assembly 106a and
beam from lamp 206e, RC will close, energizing relay
R-4 and opening enslaved switch R-4,l to brake the cir
cuit in branch 306„ stopping the ribbon driving motor
and de-energizing solenoid 274e to cause it to clamp rib
the spools of stack ribbon 254 is an electric eye unit
120B, shown in FIGS. 8 and 10 which includes two op
posed uprights 288 and 290, one on each side of the 20 bon R9.
ribbons Rs. Upright 288 carries a plurality of p‘hotoelec
trie cells 292m 2921„ 292C, etc., one for each decal
ribbon, and upright 2,90 carries a plurality of exciter
In View of the description of operation of FIG. 7 in
connection with the imprinter of FIG. 3, a further de
scription is unnecessary of the control circuit for the rna~
lamps 306„ 306,0, 306,3, etc., corresponding in number
chine of FIGS. 8-12 and 14, as those skilled in the art
to the photoelectric cells and disposed immediately ep 25 will now appreciate from a further inspection of FIGS. 7
posite the cells in alignment with the ribbons with one
and 16 how the automatic control functions to imprint
exciter lamp for each ribbon. Each decal on each ribbon
the various size stockings. Suffice it that the platen car
is adapted to interrupt the light beam from the exciter
riage will automatically vertically adjust itself to that
lamp adjacent the ribbon to the opposite photoelectric
station opposite the ribbon varying size decals that are
cell.
30 indicated by the location of each heat board as it enters
Size-sensing unit 160„ is provided as shown in FiG. 8.
the machine so that the proper size is stamped on each
Such unit functions in the same fashion as heretofore
stocking. Following imprinting, the decal ribbon which
described in connection with FIGS. 3 and 7.
has been stamped will automatically index to present a
The control circuit for the machine of FIGS. 8~12
fresh decal for a subsequent stamping.
and 14-16 is shown in part in FIGS. 7 and 16. The 35
What we claim is:
control circuit is substantially the same as that of FIG. 7
l. A stocking imprinter comprising, in combination:
except that branch circuits 306 and 310 of FIG. 7
a heat board conveyor, a plurality of stocking-carrying
are modified as shown at 306a and 310„ in FIG. 16,
heat boards disposed in upright relation upon and at
and the phantom outline of relays R--7, R-S, and R-9
spaced intervals along the conveyor, each heat board
and their connecting branches are included as shown in 40 sized to receive and carry a predetermined size stocking,
FIG. 7. The circuit of FIGS. 7 and 16 is suñîcient to
mechanism for stamping a decal transfer characterizing
show the arrangement for imprinting three different stock
ing sizes and for this purpose brake solenoids 274„ 274b,
and 274!-c are schematically shown in FIG. 16. lt will
the size of the stockings against each stocking on the heat
boards and including a plurality of decal transfer tapes
each containing predetermined numerical sizes of decal
transfers, such mechanism including heated means for
selectively stamping one of the tapes against each stock
ing, and control means coupled with said mechanism and
operatively associated with the conveyor to interrupt
movement of successive heat boards thereon and respon
be apparent to those skilled in the art how the circuits
of FIGS. 7 and 16 may be expanded upon to operate 45
the entire machine of FIGS. 8-12, 14 and 15 ‘for imprint
ing seven different stocking sizes, or howïity may be ex
panded to control a machine for imprinting a greater
number of sizes.
sive to the size of each successive heat board to cause
The operation of the circuit of FIG. 7 modified by the
said mechanism to selectively stamp that decal transfer
circuit of FIG. 16 is similar to one heretofore described
ribbon whose numerical transfers characterize such size
for FIG. 7 except as to the following. The photoelectric
against the stocking on each board.
cell controlled relay switch RC is closed to make the cir
2. A stocking imprinter comprising, in combination:
cuit in branch 312 whenever all the light beams from the
a heat board conveyor, a plurality of stocking-carrying
exciter lamps 306 to the photoelectric cells 274 are inter
heat boards disposed in upright relation upon and at
rupted by decals on the ribbons. If any one of the light
spaced intervals along the conveyor, each heat board
beams is uninterrupted by a decal then the relay switch
sized to receive and carry a predetermined size stocking,
designating means on each heat board characteristic of
RC will be opened so that the ribbon drive motor 33a
will be energized.
Each of the brake solenoids 274 is
the size of the board, a plurality of heated platens sup~
controlled by a relay switch enslaved to one of the relays 60 ported adjacent the path of travel of the heat boards on
the conveyor and each reciprocable through a stocking
R-7, R-S, or R-9, and operates as follows. If the platen
stamping cycle toward and away from a heat board op»
carriage is at the size 9 station and the platen is in the
posite it to stamp a decal transfer ribbon against a stock~
act of stamping the size 9 decal ribbon to transfer a
ing on the heat board, means for supporting and indexing
decal therefrom to a stocking (assuming ribbon R9 shown
in FIG. 9 is the size 9 ribbon), then platen position sens 65 a plurality of decal transfer ribbons each bearing trans~
fers characteristic of a determined stocking size with one
ing switch contacts 1391, will be closed and relay R-7 will
ribbon between each platen and the path of travel of the
be energized holding closed relay contacts R~7„, see
heat boards, and control mechanism coupled with the
FIG. 16. Because time delay relay TD-l, which has
been energized, is measuring a time period during which 70 conveyor and with each platen and responsive to the
designating means of each approaching heat board to in
the platen is holding the decal to be transferred against
terrupt movement of the heat board when opposite that
a stocking on a size 9 heat board, when it times out,
platen associated with the decal ribbon characteristic of
enslaved switch TD«1b will be closed energizing time de
the size of the board and institute a stamping cycle of
lay relay TD-2 which will commence measuring a time
operation of such platen to stamp the associated ribbon
interval during which enslaved switch 'FD-2b is held
against the stocking on the heat board.
3,024,557'
1l
3. A stocking imprinter comprising, in combination:
a heat board conveyor, a plurality of stocking-carrying
heat boards disposed in upright relation upon and at
spaced intervals along the conveyor, designating means
on each heat board characteristic of the size of the stock
ing on the board, a heated platen supported adjacent the
path of travel of the heat boards for movement vertically
of the boards and stocking-stamped cyclic movement to
on each heat board characteristic of the size of the stock
ing on the board, a heated platen supported adjacent the
path of travel of the heat boards for movement vertically
of the boards and stocking stamping cyclic movement
toward and away from the boards, mechanism for sup
porting in vertically spaced horizontally extending rela
tion and for indexing a plurality of decal transfer rib
bons with the ribbons disposed between the path of travel
of the heat boards and the path of vertical travel of the
ward and away from the boards, mechanism supporting a
decal transfer ribbon between the path of travel of the 10 platen, and control mechanism coupled with the platen
and responsive to the designating means on each heat
heat boards on the conveyor and the platen, and control
board approaching the platen to cause the platen to shift
mechanism coupled with the platen and with the conveyor
vertically to a position adjacent the transfer ribbon bear
and responsive to the designating means on approaching
ing the indicia characteristic of the size of the stocking
heat boards to cause said platen to shift vertically to a
position determined by the size of the stocking on the 15 on the heat board prescribed by the designating means
and institute a cycle of stocking stamping by the platen
heat board as indicated by said designating means and
of such transfer ribbon against the stocking on the heat
cause institution of a cycle of stamping by the platen of
board.
the transfer ribbon against a stocking on the heat board.
4. The invention as defined in claim 3 characterized
in that said decal supporting and indexing mechanism is 20
supported for vertical movement with the vertical move
ment of the platen.
5. A stocking imprinter comprising, in combination:
a heat board conveyor, a plurality of stocking-carrying
heat boards disposed in upright relation upon and at 25
spaced intervals along the conveyor, designating means
References Cited in the tile of this patent
UNITED STATES PATENTS
697,246
892,805
2,690,l04
2,832,164
Hall ________________ __
Burdine _____________ __
Schwartz et al ________ __
Hall et al. ___________ __
Apt".
July
Sept.
Apr.
8,
7,
28,
29,
1902
1908
i954
1958
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