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Патент USA US2112585

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March 29, 1938.
P. WRIGHT
PACKAGE SEALINÈR MACHINE
Filed June 8, `1957
2,112,585 `
3 vSheets-Sheet 1 '
_.
ww.
mw.
Mmh 29, 193s.
Y
P. WRIGHT `
2,112,585
PACKAGE SEALING MACHINE
Filed June s, 1937
'
s sheets-‘sheet s
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66 66` 67
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2,112,585~
` Patented Mar. 29, 1938
UNITED STATES PATENT_or-fincav
"ÈÍÉÀGÍÃÄÍÈÉÈÍÉE
22 Claims.
`This invention relates to box strapping mae
chines and has for its object to provide a mech
anism which is simple in construction and op
eration, and more efficient in use than those here
5
tofore proposed.
1
Q
Í
,
With these and other objectsin view the in
vention resides in the novel details of construc
tion and combinations of parts as will be dis
closed more fully hereinafter and particularly
l0 pointed out in the claims.y
Referring to the accompanyingdrawings form
(Cl. 81-9.1)
`
y
ing the formed seal around the overlapping ends
or bights of the box strap,` the crimping opera- ,
tion being performed~simultaneously with the
cutting and forming of a seal, whichseal how
ever, is for subsequent use in the next box strap
ping and sealing operation.
_
I indicates generally the base \of the machine
which has atvits substantially central -portion a
vertically extending housing generally identi
fled by the numeral 2 for containing a loose coll
of seal forming band material 3the outermost-- end
ing a part of this specification and in which like
of. which is fed intermittently to and over an anvil
numerals designate like parts in0 all the-views,
4 disposed at what will betermed the front edge'
5 of the machine, the feeding action being stopped`
when the end of said material strikes the shoul-v l5
Fig. 1_is a vertical sectional view of the ma
15 chine taken substantially in the plane> of the
strap -with which a box is to be bound;
2 is a vertical sectional view of the ma
chine taken transversely of Fig. l and substan
tially onthe line 2--2 of lFigïfi looking in the di~20 rection of the arrows;
in the direction of the arrows, but illustrating the
crimping jaws in their lowermost position;
Fig. 4 is a horizontal sectional view taken ,sub
stantially on the line 4-4 of Fig. 1 and looking
in the direction of._ the arrows;
Fig. 5 is a detail view partly in elevation and
partly in section to illustrate the construction and
30 operation of the strap cutter;
Fig. 6 is a fragmentary central sectional View.
of the yieldable connection provided in the link for
actuating the means for. feeding a strip of band
25
material to the seal forming mechanism.
Fig. 7 is a perspective viewof a formed seal
blank;
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y
Fig. 8 is a fragmentary plan view of the over
lapped ends >of the box strap with a crimped seal
applied thereto for locking the same together;
Fig. 9 is a fragmentary perspective view of one
40
of the crimping jaws;
Fig. 10 is a detail view illustrating how the
crimping jaws secure a seal to the tensioned box
strap;
.
9 of, said housing, said dog placed under tenslon
as by the spring I0 so as to hold against retro
grade movement the s. free end of the seal band
against the top surface of saidl anvil. _In this
.
Fig. 3 is a view somewhat similar to Fig. 2 but
taken as on the line 3--3 of Fig. 1 and looking
33
der 6 of a dog l pivoted as at 8 to the frontcover
.
Fig. l1 is a detail vertical sectional view of a
portion of the feeding means for moving a supply
of band material to the seal forming mechanism;
and
. Fig. 12 is a verticalsectional view taken as on
"’U the line I2-I2 of Fig. 11 and looking in the di
rection of the arrows.
y This invention is directed to machines for ten
sioning a thin flat metallic strap around a box
or crate,- forming a seal from a 'supply of thin flat
55 metallic band material, and applying and crimp
respect said dog- is rounded where it engages said
seal band so that the latter may be freely d1
rected between said dog and said anvil in the forf
ward feeding of the seal _band material.
Said housing- 2 comprisesthe front plate 9 `ex
tending vertically and having its side vedges suit«
ably secured to the two side walls such as II >and
I2 the latter of which is preferably removable
butsecured in place asby the screws I3, to por
tions of the machine casting, the rear of'said 30
housing preferablyÁ being open but covered by a
hinged door I 4 made of spring material, said door
pivoted at I5 and provided with a latch-forming
end I6 for making possible the ready insertion ofVV
a newcoil of seal forming band material‘when 35
the previously contained coil has been vused up,
a sight opening I1 being provided in `oneor both
of the side Walls I I and I2 to enable the operator
to determine the quantity of seal forming bandv
material left in the housing.
v Y 40
At the front end of the machine there is pro->
vided a vertically reciprocable plunger 20 operat
ing closely in a suitable guide space formed be
tween the housing walls 9, I I and I2 and a portion
2| of the machine casting. This plungercomprises 45
a base portion 22 carrying at its lower end_ra
hardened shear member 23 _ which, upon its
downward movement, cuts oilî the free end of the
seal forming material lying on thevanvil 4, said
base portion carrying at its upper end `rtwo paral
lel spaced plates 24 and 25 carrying therebetween
50
a plurality of hardened rods such as 26 spaced
from each other to receive therebetween the teeth
such as . 21 carried by the lever vorv handle 2B
pivoted as at 29 in the upper portion of the ma 55
2
Y
anales
chine,whereforeitwillbeseen fromlligJthat
asmidleverisoscillatedtheplungerwiilbegiven
vertical reeiprocation or siding movement. Pur
ther. the bottom-oi' thebase member 22 of said
plunger 'has a conilguration as at Il coacting with
the conßguration of said anvil so that when the
freemdoftheaealforming‘bandmaterialis
cutoff. bytheshear „..itisimmediately andsub
sequentlybentovertheanviltoassumetheshape
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u
showninHgJlmtb'stillretainedontheanvil
by pressured theholding dog'l, said member 22
„having a slotway Il formed therein to straddle
mid dog during this seal blank forming operation.
The base portion l! of the plunger is prefer
ably made of solid metal forstrength and se
curely vthreaded thexeinto is a pin generally in
dicated by the numeral 3i extending horizontally
outward therefrom through a vertical slotway 30
formedin the side i! of the housing. said pin
having the same diameter throughout its length,
or made of different diameters asV found moet
suitable, the latter being thecaseçlllustrated in
the drawings, this pin having reciprocation with
the plunger. 'The function of this pin is to ac-'
tuate the crimping dogs. later tobe described.- as
well as> the cutter for severing the bight of box
strap between the supply thereof and the crimped
ysealfsaid pin also actuating the means for feed#
ing the seal blank forming material to the anvil l.
’Guides I1 and 30 are suitably secured to the
wallsofthehousingltopermitvertiealrecip
rocationtherein of a plate Il which. with afplate
‘l parallelly spaced,y therefrom, constitutes a
for pivotally» supporting as at 4i and.“
an opposed pair of crimping Jaws 43 and u,Y the
#vot pins Il and l2 together with al'top pin‘`
_4l serving» to hold the frame plates 87| and ‘I in
spaced relation.> The upper extremities of the
laws ‘I and 44 are connected as by the links 4l
and 4l to the plunger pinIIII-wherefore it will'
be clearly-understood that the reciprocations of
the stirrup adjacent its lowerwall, and is pivo- ,e
tally mounted in the opposed sides, said pin ex-.
tending outwardly of the housing through a slot
Il formed in the side wall such as i! thereon.
andaecuredtotheouter'endofthispinisan
armilpivotail’yconnectedasat“tooneend_Y
of a tubular member Il slidably receiving there
in one end of a rod tl whoœ other end is pivo-l
tally mounted on the plunger pin Il. The end of
said rod _within the tubular memberis fashioned
' to form a seat against which abuts one'end 0f a
coil spring ll whose other end is retained as by `a
cap 'Il for the tubular member,'see particularly>
Pig. 6, the purpose of this construction beingv to
provide a yieldable connection between the plung~
er pin II and thearm il.
On the pin Il is secured a dog 1I which, when
the arm “"is pulled by the plunger pin ß in
a direction toward the front of the machine and
given slight rotarymovement thereby, will pinch
the outer end portion of the seal forming 4band
material against the bottom wallV I2 of the stirrup
and feed said portion over the anvil l' until the
extreme end is stopped by the shoulder I lofthe
holding_dog l, see Fig.` 2. On the reverse or back#
wlrd movement of said arm Ii the dog 'Il will
be lifted- from its pinching position, leaving the '
end of the seal forming band material on» said
anvil, the stirrup Il being swung towardthe left
as seen in Pig. 2 to the limitofl its movement
caused by the> downward movement ofthe plung
er pin. 0n the next upward movement of >said
plunger pin the stirrup dog 4‘II will again- take la
pinch-hold on another- portion of the seal form
ing band material and similarly feed it toward'v
the anvil l. In the meantime the shear 2l car
ried by the plunger will have lsevered the end,
portion of the previously forwardly fed seal form
ing band material and this‘severed portion will
have been moved out of the way by mechanism 40or
later to be described.
In other words thestirrup
said pin will came the crimping jaws to operate dog 'il has intermittent pinching action- on the »
about their ’pivots while carrying said Jaws in , coiled band'material for successively feeding said
their frame upwardly and downwardly'in the material to a position under-the plunger for'sev- guide ’l and Il, the top edge of the plate 3l erance ofthe end portion of said material by the 45
being provided with a slot* 4I to accommodate
the pin Il in its extreme lower position. In other
words, the Jaws ß and M with their links 4I and
41 create a toggle, actuated by the plunger pin
Il, so that when said pin is in its elevated‘posi
tion theelower ends of ~the Jaws will be.` fully
shear 2l. 'I‘he spring“ is provided to permit j
continued movement' of the rod Il during the>
extreme upward movement of the plunger pin l5
after the end of the seal forming band material
has reached and been stopped by the shoulder
opened but when said pin is in its lowermost
position the shoulders such as “of said jaws
Substantially parallel with the front edge l of
willhave‘cometorestonthesealblanktobe
crimped. and further downward movement of
the pin ll `causes an outward flexing oi’ said links
to turn the Jaws about their pivots to fold vthe
depending sides such as Il of the seal blank in
under the lowermost bight >Il of the box strap.
this final action of said laws causing suitable pro
lections Il, on >the inner surfaces thereof to bite
into the opposite edges of the overlapped bights to
make deformation indicated at I3 preventing
slippage »of one bight of the box strap over ~the
other bight'after the seal is completed.
A stirrup Il isdispoaed within the Yhousing 2
i of the holding dogr 1.
'
the machine, there is formed' in they base i a
guideway ll’lto receive therein the slide 10 car'
rying at one end an 'upstanding'lug 11 to which 55
is pivoted as at 'Il one end of a link‘llthe other
end of whichr is pivoted as at- Il to a vertically
exfendingÉhand lever Il the lower-*most end `>of
which isfulcrumedas at 'l2 to 'an ear 83 extend
ing imwardly from the base of themachine. so
that when the lever `Il is oscillated lthe link' ‘Il
will cause horizontal reciproeatiomy of .the> slide
1l.'
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v'I‘he opposite end of said slide has an upstand
ing lug “to which is pivoted as at Il a tension
ing or take-up dog Il having a handle portion
'andpivotedatitsupperendsasatli totheop 81 and urged as' by the spring It against the
posite- sides i I' and ri! of said housing. said stir
bight of the box strap to pinch the same‘against
rup being of substantially U-shape withïa bot
a cooperating footï'll. This Vlug Il has rigidly
70
>l! connecting'the two verticalvspaced attached thereto a pair of-ilngers “and Il sul»> 70.
si
’Iheœillofthesealforming band ma
stantially parallel to each other and to said slide;
' ted between the sides of this stir-y -saidvilngei's extendingin a direction from said
of said coil passing to the lug toward theanvil I, said lingers being so
surfacev of the lower wall l2> spaced from each other andfpositioned as to ~
A pi'n ß passes transversely'of strike and slide the formed seal blank tothe
k .
ananas
left as seen in Il'ig.- 1 from theanvil 4 onto and
straddling the upper bight 82y of the overlapped
ends of the box strap, and into apposition imme-l
diately below and in the path of the crimping
jaws.
y
‘
in the position -shown in Fig. 2 with .the plunger
20 raised to its uppermost throw. 'Themtheihan
die 28 is fully oscillated to the position shown
in Fig. 3 which causes a downward throw oi' said
plunger duringwhich movement the shear `28
V
The base` I of the machine is also provided with
another upstanding ear |00 Vhaving a horizontal
lateral extension |8| 4servingas a foot or shelf`
upon which the upper bight 02 of the box strap
will cut on' the .correct length from the~end por
tion Yof the coil and the lower end of theplungei- win form thel severed portion into the' _seaiblan? ’
having fa substantially inverted U-shapt’e';l andv
is held To said ear I00.is pivoted as at |02 a4 leave' this formed blank -held upon the» anvill I ' '
dog |08 for pinching said upper bight of the box . by the dog- 1. The Vstirrup>l0 will then be in
strap and holding the same against the upper its rearmost position as indicated in Fig. 3.
The machine is then placed >on Vthe upper s’ur
surface of said foot, said dog having a downward
projection `|00 for engaging the side edge of the face of the-'box to be strapped„-and"a length of
15 upper bight of the box* strap and- preventing said strap from a coiled supply led to the machine 15
bight from moving in a direction away from the where .the extreme end portion |2| of said strap
front edge 5 of the machine. Said dog has an is laid on the upper surface ofja _toe |22 extend
upwardly extending handle portion |05, and a ing forwardly from the front edge ofthe base, of
pin IOB'extending from the side of the ear4 |00` the machine and under or in line with the’plunger .
20 serves as a stop for limiting the movement of
said dog in one direction» Said ear has a sec
ond dog |01 pivoted,> thereto as at -|08 also hav
ing an upwardly extending handle portion` |08,y
the two handle portions |05 and |00 being spaced
25 from each other in a plane substantially parallel
20. The strap in thisposition is passed beneath
the lower cutter blade ||8 in a space provided
therefor; `and thence placed between the dog |81
and the top surface‘oi the cooperating toe || I', „
the dog >being oscillated by the handle, |09 -toper
mit yentry thereunder of the strap, ysee Fig. 1.
Thefstrap'is then passed around the box ¿as will
be clearly understood and kthreaded under the
dog 85 carried by the slide` 18 so that said dog.
the two dogs |03 and |01 in a direction toward under the tension of its spring 08, will ‘grip said
30 Aeach other as willçbe clear- from Fig. 1. The
strap and pinchingly hold itA against the top Ysur
dog |01 is adapted to vpinch and hold rthe lower. face of its Vcooperating foot 88. The remainder
bight 5| of the box strap against the upper sur
of _the strap is laid> in `the slot |28 formed be-v
face of a toe |I| extending forwardly from the neath a portion of the anvil 4.,;thence passed 1
front `edge -of the base of the‘machine, the lower _Y betweenpthe cutter yblades IIS-¿andl ||1 (the.
' end portion of said dog |01y being L-shaped to crimping jaws being raised for this purpose) and 435
clear4 the upper bight 92` while its extreme lower thence passed over the la'terailower extension
end extends into the space between the upper of the dog |01, andvplaced between thel dog |08
with the front edge 5 of the machine, with a`
spring i I0 interposed between said handles for
exerting a pressure-¿normally tending to move
and lower bights for engaging the lower bight.
Secured to the ¿ears 83 and yl00,\and bridging
and its cooperatingfoot |0|.
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40 the slide 15 is a vertical plate ||5 whose extreme
forward edge is fashioned into a lower cutter
'I'hen the tensioning lever 8| is‘oscillated, caus-`
ing reciprocation of the slide 16 carrying theten-`-`
sioning dog 85, and when/the slide moves‘to the
blade H6 cooperating with an upper cutter blade
||1 constituting one arm of a crank H0 pivoted
left as seen in Fig. l the dog 88 and its coacting „
foot 80 will pull the slack out of the strap around ,_
to said plate as.at'||9, the other arm of said
crank having formed therein a slotway |20 with
in which rides theA plunger pin 35. With par
ticul
reference toFig. 5 it will be seen thatr
this s otway is provided `with a bend indicated
at |40 to insure operation of the cutter blades
before pin 25 reaches the lower limit of'its stroke.
The position of these two cutter blades is such
as to receive therebetween the. upper bight 02
of the box strap so that, after the strap has been .
tensioned about the box, the upperl bight thereof
55 will be severed at about the midpoint of the down
ward movement of the plunger pin, thereby per
mitting the severed bight (with the formed seal y
A65
the box because the 'lower bight 5| of `said strap
is firmly gripped by the dog |01 carried bythe 45
base of the machine. If the strap has been ï
applied manually around the box initially with
sufllcient tautness, one complete throwl of the
lever 8| might be suilicient but plural oscillations.
of said lever may be made if >necessary to >get 50r
the desired tension, the function of the dog 86
being to progressively tighten the strap around
the box, andthe function of the dog |03 being
to hold the tightened strap shouldplural recip
rocatiohs of the slide be necessary. `When rthe 55
desired tension is obtained, the dogs |03 and |01
will maintain said tension and the lever 8| may .
blank thereon) to be moved _into surface contact
be raised to its vertical position causing the slide
with the lower bight 5| >byfthe crimping Yjaws
to move to its extreme-right hand` position, look- '
during the remainder of the down stroke of said
pin, `the final oscillation of said jaws to crimp
the formed seal blank >and the contacting bights
ing at the machine as in Fig. 1, thereby `moving 60
the lingers 90 and 8l out of the plunger cham
ber: with the slide in this position itsfdog 8B Vwill _ l
securely together taking >place just prior to the
clampingly holdvthe tensioned strap so rthat the
lowermostlimit of said stroke.
upper bight v92 may besubsequlentlyg~~severed by f -
.
The operation of the machine ywill be brleily
described in the following. The coil of seal form
ing band material 8 is placed 'within the housing
the cutter blades H6 and | |1 without loss vof strap 65
tension.
f
'
During the left hand movement of theslide 15 .
the ñngers 90 and 9| carried thereby will have
moved or slid the-.formed seal blank from the'
28 is partially oscillated to give short reciproca- i anvil I onto and straddling the upper bight $2
of the tensioned strap and into a position im
tions to the plunger 20 until the yieldable con
nection 61--68 has caused intermittent feed of mediately below thecrimping jaws. When the
said end to and against the shoulder 6 where
desired strap tension is obtained'the other/handle -
-; 2 and the outer end of the coil is threaded under
the dog 1| of the stirrup 58, and then the handle`
Iupon the dog 1 will hold saidend against the
or lever 28 is given an‘oscillatory movement-from`
anvil l, thehandle `28 then being substantially .n the position shown inFig, 2 tothe position
a
.
4.
2,119,595'
in Fig.v 3 thereby lowering the plunger 20 carry
ing the pin 35 which actuates the cutter blade I i1
to sever the upper bight of the strap, which sev
erance is immediately followed by thefull out
(n . ward toggle movement of the links 46 and 41 to`
bring together the crimping jaws 43 vand 44,
thereby completing the Aseal shown in Fig.v 8'.
Upward movement of the'plunger then releases
and Vraises the crimping jaws, and the machine'
10 may then be removed from the box. "
'
Whereas the lower portion `of the plunger 2l
has been illustrated as'i'ormed with a `separable
shear element 23 it will be understood thatvthis
shear could be an integral part of the plunger
15 hardened or` tempered rto perform its cutting
function.y Also the- means for forming the-seal
blank from the‘stripmaterial comprises the sta
tionary 'anvil 4 constitutingfa male die and the
correspondingly formed bottom portion of ythe
20 plunger jconstituting a female die.' both dies co
operating with the plungerfor ‘severing a prede
termined length 'of the fed strip material and
formingfthe severed portion into the seal blank.
Special attention isfdirected tothe means for
25 reciprocating the plunger which comprises the
rods 26 constituting rack-like elements, and the
teeth 21 for engagement therewith; These teeth'Y
are larranged eccentrically with respect to the
pivot 29 of the operating lever 2l Aso as to dispose
30 the‘ “tooth valley” 135 clòserto'the .pivot than
any ofthe other valleys.\ Further,- the“ rods 28
are arranged in a row which is`not parallel to a
" face of the plunger but whichl is obliquely dis
posed to they line of plunger reciprocation, the
A‘topmost rod |36 passing closest to the lever pivot
29- on the downward 'stroke-of the plunger,fand
this particular'rod may' be provided as shown
with a cylindrical `bushing. constituting a fairly
frictionless bearing Vwith the toothed portion of
40 said lever.
-The purpose of this construction is
to give'increased leverage ('see Fig. 3) upon the
plunger at the end of its downward movement at
the time not only when the strip material is sev
ered and »formed into ’the >seal blank, but when
the upper bight 92 of the box strapvis severed
from its supply, and the crimping jaws 43 and 44
perfect the seal.
f
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ing means; a reclprocable plunger and means oo
operating therewith to- sever ay predetermined
length of the fed strip of material and to form
the severed portion into a sealv blank;
actuated by the strap tensioning means to move
the formed seal blank into’ crimping position
with respect to overlapped-portions oi’ the ten
sioned strap; and means actuated by said plunger
for operating the material feeding means, for
crimping the positioned seal blank about over
lapped portions of the tensioned- strap to form av
seal, and for cutting `’off-*the surplus of the
strap adjacent the'seal'.`
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3. In a box strapping machine the combina-tion of strap tensioning means; means to feed a
strip of seal blank material in a direction'trans
verse to the movement of the strap tensioning
means, said feeding. means including a pivoted
member; a reciprocable plunger and means co
operating therewith to sever a predetermined
length of the Vfed strip of material and to form
the severed portion’ into a seal blank; means‘ac
tuated~ by the 'strap' tensioning means- to move
the formedseal blank'into crimping position with
respect to overlapped portions of the tensioned 25
strap; and means actuated bysaid plunger for
operating the material yfeeding means, for crimp- '
ing the positioned seal blank about overlappedk
portions of the tensioned strap'to' form a. seal,
and for cutting oñ’the surplus of the strap ad 30
jacent the seal.
.
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4. Ina box strapping'machine the combination
of strap tensioning means, means to feed a strip
of seal blank material in a directiontransverse
tothe movement of the strap tensioning means,
said feeding means including a pivoted memberprovided with a gripper element engageable with
the strip; a reciprocable plunger and means co
operating therewith to sever a predetermined
length of the fed strip of material and to form
the severed portion into a sealfblank; means
actuated by the strap'tensioning »means to move
the formed seal blank into crimping position with
respect to overlapped portions of the tensioned
strap; and means'actuated by said plunger for`
operating the material feeding means, for crimp
ing the positioned seal blank about overlapped
It will be obvious that those skilled in the art ` portions of the tensioned strap to form a seal,
and for cutting off the surplus of the strap adja
may vary the details of construction and ar
50 rangements of parts without- departing from the
spirit of the inventionand therefore it is desired
not to be limited'to the exact foregoing disclosure
except as may be demanded by the claims.
What is claimed is:
l. In a box strapping machine the> combination
55
of strap tensioning means; means to feed a strip
of seal< blank material in a direction transverse
to the movement of the strapl tensioning means;
a reciprocable plunger and means cooperating
60 therewith to sever a predetermined length ofthe
fed strip of material and to form the severed por
tion into a seal blank;v means actuated by the
strap tensioning means to«move the formed seal
'blank into crimping position Awith respect to
65 `'overlapped portions of the'tensioned strap; and
cent the seal.
K
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of strap tensioning- means; means to feed a strip ’
, of seal blank material in a direction transverse to '
the movement'of the strap tensioning means, said
feeding means including a swingable stirrup 55
through which the strip is threaded, and a grip
per element carried by said stirrup and engage
able'Y with the strip; a reciprocable plunger and
meanscooperating therewith to sever a prede
termined length of the lfed strip of material and'.
to form the severed'portion >into la seal blank; .
means actuated by thestrap Ltensioning means
to move the vformed seal' blank into crimping po
sition with respect to overlapped portions of the
tensioned strap; and means actuated by said 65
means actuated by said plunger for operatingthe
material'feeding means, for »crimping the posi
plunger
tioned seal blank about overlapped portions of
the tensioned strap to form av seal, and for cut
ting off the surplus 'ofáthe strap adjacent the
to form a seal',v and for cutting off the surplus of
seal.
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50
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5. In a box strapping machine the combination
for
operating
the
material ' feeding
means, for crimping the positionedseal blank ‘
about overlapped portions of the tensioned strapthe strap adjacent the seal.
6. .In a box strapping machine the combination
2. Ina box strapping machine the combination
of strap tensioning means;r yieldable means `to
of strap tensioning means; >means to 'feed a strip `
of seal blank material in a direction transverse
feed a strip of seal blank material in al direction'
75 transverse to the movement of the strap'ten'sion
to the movement of vthe strap tensioning means; v
a reciprocable plunger and means cooperatingv
70
s .
ananas
therewith to sever a predetermined length of the
erating therewith a sever a predetermined length
of the fed strip of material and'to; form the
.fed strip of material and to form 'the severed por
severed'portion into a seal blank, said plunger
tion into a seal blank,` the cooperating meansin
cluding two die members one of which constitutes having rack-like elements; means to reciprocate
'said plunger, said means having a toothed portion
Cl a shear element; means actuated> by ’the strap
tensioning meansV to move the formed seal blank operatively> engaging said rack-like elements;
into crimping position with respect to overlappedv means actuated by the lstrap tensioning means.,
to move the formed seal blank into crimping po- "
portions of Ithe tensioned Strap; and means actu-'
atedby said plunger for operating the material l sition with respect to overlapped portions of the
feeding means, for crimping the >positioned seal tensioned strap; and means actuated byl said 10
blank about overlapped portions of the „tensioned plunger for operating the material-feeding means,
strap to form a seal, and for cutting oil.' _the sur
plus of the strap adjacent the seal. r,
.
'7. In a box strapping machine the combination
15 of strap tensioning means; means to feed a strip
of seal blank material in a direction transverse
to the movement of the straptensioning means;
a y reciprocable plunger . and means cooperating
therewith to sever a predeterminedl length ofthe
20 fed strip of material and to form the> severed por
tion into a seal blank, the cooperating means in
cluding a stationary die member and a com
panion die member carried by the plunger, one of
said members constituting a shear element;
25 `means actuated by thefstrap tensioning means
to move the formed seal blank into crimping po
sition with respect to overlapped portions ofthe
’ for crimping the positioned seal blank about over
lapped portions of the tensioned strap to forma
seal,` and for cutting oil the surplus ofthe 4strap
adjacent
the' seal.
'
`
Y
`
Y.
,
15
11.v In _a b'ox strapping machine the combina
tion of strap tensioning means; means to feed a
strip of seal blank material in a -direction trans
verse tothe movement ofthe strapitensioning
Vmeans; a reciprocable plunger and means coop-_
erating therewith to sever a predetermined length
of the‘fed strip of ‘ material and tov Iormfthe
severed portion into a seal blank, saidplunger
having rack-like elements; pivoted means to re
ciprocate said plunger, said means having a
vtoothed portion operatively engaging> said `rack
like elements, said portion eccentrically disposed
with respect to the pivot of said means; means
tensioned strap; >and means actuated yby said actuated by the straptensioning'means to move
plunger for operating the material feeding means. the
formed seal blank into 'crimping position so
30 for> crimping the -positioned seal blank about
` with respect to overlapped portions lof the ten
overlapped portions' of the tensioned strap to sioned strap; and means actuated by said plunger
form a seal, and for cuttingoif the surplus ‘of
foroperating thevmaterial feeding means, for
the strap adjacent the seal.' y '
~
crimping the positioned seal blank about over
8. In a box strappingmachine the combination
35
35 of strap tensioning means >including a reciproca-v lapped portions of the tensioned strap to form a
v seal, and for cutting off ‘the surplus `of the strap
ble slide; means to feed a strip of seal blank ma
terial in a direction transverse to themovement
of the strap tensioning means; a reciprocable
40
plunger and means cooperating therewith to sev
er a predetermined length "of the fed strip of ma
terial and to form the severed portion into avseal
blank; means actuated bfv‘the strap tensioning
means and carried 'by said ‘slide to move the
formed seal blank into-crimping position with re
adjacent
the- seal. ,
.
,
»
12; In a box strapping l_machine the combina
tion of strap tensioningv means; means'to feed
a stripY oi' seal blank material in a direction
transverse to the movement of the strap tension-`
ing means; a reciprocable plunger and means
-cooperating therewith to sevër a `infedeterxnined
length of the fed-strip of material and to form
the 'severed portion into` a seal blank, said plung
spect to overlapped` portions of the tensioned -er having rack-like elements arranged in a row
strap; and means actuated by said plunger for obliquely disposed to the line of plunger recipro
operating the material feeding means, for crimp
cation; means actuated by the strap tensioning
ing the positioned seal blank about overlapped
portions of the tensioned strap to form a seal,
50 and for cutting off the surplus of the strap ad
jacent the seal.
9. In a box strapping machine the combina-tion of strap tensioning means; means to feed a
strip of seal blank material in a direction trans
55 verse to the movement of the strap tensioning
means; a reciprocable plunger and means coop
erating therewith to sever a predetermined
length of the fed strip of material and to form
the severed portion into a seal blank; means actu
60
ated bv the strap tensioning means to move the
formedl seal blank into crimping position with
respect to overlapped portions- of the tensioned
strap: and means actuated bv said plunger and
including a plunger carried pin for operating the
65 material feeding means, for crimping the posi
tioned seal blank about overlapped portions of
the tensioned strap to form a seal, and for cut
ting of! the surplus of the strap adjacent the
70
75
seal.
10. Ina box strapping machine the combina
tion of strap tensioning means; means to feed a
strip of seal blank material in a direction trans
verse to the movement of the strap tensioning
means; a reciprocable plunger and means coop
means to move the formed seal blank into crimp
ing position with respect to overlapped portions
of the tensioned strap; and means actuated by
said plunger for operating the material feeding
means, for crimping the positioned seal blank
about overlapped portions of the tensioned strap
to form a seal, and for cutting of! the surplus of
the strap adjacent the seal.
'
'
13. Mechanism for forming a seal blank for
sealing box straps or the like, comprising means'
to feed strip material to a position where the
seal blank is formed; a reciprocable member in
cluding means to sever the end portion of the
strip and to form the severed portion into the
seal blank, said member actuating the strip ma
terial feeding means; means to hold the seal>
blank temporarily after its formation; and means 65
to move the seal blank from its temporarily held
position.
'
14. Mechanism for forming a seal blank for
sealing box straps or the like, comprising means
to feed strip material to a position where the seal
blank is formed; a reciprocable member and co
operating means to sever the end portion of the
strip` and to form the severed portion into the seal
blank; pivoted constantly tensioned pressure
means to hold the seal blank temporarily after
6
~ ananas
'its formation: and means to move the seal blank >by the tensioning means to y:nove a formed seal
fromits temporarily held position.
\blank into position for sealing the tensioned
l5. Mechanism for forming a seal blank for strap; and sealing means actuated by theseal
sealing box straps or the like. comprising means »blankforming means.
.
1 ,
to feed strip lmaterial to a position where the seal
` 19. Inra box strap‘sealingmachine the. oom
blank is formed;`a reciprocable member including -
bination of means to hold'the ends of a box-en
` meanstosever the vend portion ofthe strip and
to form the severed lportion into .the seal blank.
circling strap in overlapped relation; means to
form a seal blank forsealing together the over-_
lapped ends of the strap; means to move a formed
said member actuating the strip material feeding
means; meansy to hold the seal blank temporarily seal blank into sealing position; and sealing 10
after its- formation; and means to move the seal -means carried and actuatedby the seal blank
blank fromv its temporarily held , position. said
_means subject to actuation when the seal blank
is required for sealing the box strap.
.
v
16. Mechanism for forming a seal blank for
sealing .boxstraps or the like, comprising means
to feed strip materialto a position where the. seal
blank'is formed: 'fa stop for limiting the feeding
movement of the strip to provide a predetermined
20 length for seal blank formation; a reciprooable
' member including means to sever ~the predeter
forming means.
`
“
'
ï
.s
20. In a box strapping machine the combina
tion of strap tensioning means: means to feed a
strip of seal blank material to a position for form 15
ing a seal blank therefrom; a reciprocable plung
er'and means cooperating therewith to sever >a »
predetermined lengthpof the fed strip of material
and to form the severed portion into a seal blank;
means to move the formed seal blank into crimp- ï
ing position withA respect to overlapped portions
mined fed length of the strip and :to form the
of thetensioned strap; and meansr actuated by
, severed portion into the seal blank,` said member
said plunger-for operatlngthe material feeding
means, for crimping the .positioned seal blank
about overlapped portions of the tensioned strap
to form a seal, and for cutting on the surplus of
actuating the~ strip. material feeding means;
v25 means to hold the seal blank temporarily after
its formation, said means carrying said 890D: and
means to move _the seal blank from its'temporar
. ilyheld Pœition. '
`
the strap ladjacent the seal.'
. '
2l. Ina box strapping machinethe combina
’
Y1'1. Mechanism for forming a ses) blanrfor
tion of means to hold a strap around a vbox in
sealing box straps or the like,A comprising means
sealing position; seal blankfeedlng and forming
. to feed strip material to a position where the seal
means; means to- secure overlapped ,portions of
30
blank is formed; a stop yfor limiting the’ feeding
movement of the strip to provide a predetermined
the held strapy with a formed seal; a strap cut
ter; and a reciprocablemember including means
length for s_ealblank formation; a reciprocable carrying and. directly actuating the seal> blank
member and cooperating means to> sever the pre lfeeding and forming means, the fseal securing 35
determined fed ylength of the strip and to form means, and said cutter. Y ,
‘
the severed portion into the seal blank; means . ‘ 22. In a> box strapping machine the combina
to> hold the seal-blank temporarily after its for
tion ofmeans to hold a: strap around a box in
mation, said ¿meanshaving said stop as lan‘inte
40 gral part thereof; and means to move the seal
` blank from its 'temporarily held position.
_
` 18. In a box strapping machine the combina
tion of means ~to tension a strap about "a box;
means to form a sealnhlank for sealing together
theends of the tensioned strap; means actuated
sealing position; seal blank feeding and forming y
means; means to` secure overlapped portions of
the- held strap with a formed seal; _and a recipro
cable member including means carrying and :di
rectly actuating the seal blank feeding- and form
ing means, and the seal securing means. v Y
P'ARVIN WRIGHT.
‘
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