US1904914A - Tightening and sealing device - Google Patents

Description

April 18, 1933. D. A. BRADLEY 1,904,914

TIGHTENINC- AND SEALING DEVICE Filed Nov. 13, 1931 5 Sheets-Sheet 1 in we 71 f0 WWZ ZM April 18, 1933. D. A. BRADLEY 1,904,914

I TIGHTENING AND SEALING DEVICE I Filed NOV. 15, 1931 5 Sheets-Sheet 2 6' 6- A 45 Inventor April 18,1933. D BRADLEY 1,904,914

TIGHTENING AND SEALING DEVICE Filed Nov. 13, 1931 5 Sheets-Sheet 3 N h 9 h we II -J 741 i \"'ll| 2 l'vvezzrorx April 18, 1933. D BRADLEY 1,904,914

TIGHTENING AND SEALING DEVICE Filed NOV. 13, 1951 5 Sheets-Sheet 4 Fag c5 .4 1

April 18, 1933. D. A. BRADLEY 1,904,914

TIGHTENING' AND SEALING DEVICE Filed Nov. 13, 1951 5 Sheets-Sheet 5 Patented Apr. 18, 1933 umrEo-"STA DANIEL AMBROSE BRADLEY, or nonnoNQENGLANDQAsS GN R ,To nsues-rema OF'LONIZON, ENGLAND, ABRITISH COMPANY v 7 stemming snnmne Device t 3 Application filed November IQBI S er ial' No. 574,900; and in Great Britain November 20,

This invention'is forimprovements in ori relating to a tightening device for use-in tightening a band, strapor the lik'efitha t is looped about "a box or package and 5 to'have its ends secured together by afclip or fastener to which primarily one. end 'por tion of the band isattached, which devicev is of the type comprisingtensioning means," for example a pawl tensioning-device, to

is which the second end portiomofjthe band extending across the clip is to be attached; and a support for the tensioning means hav-Q ing I an abutment arranged to take up; i the reaction due to the pullof the tens ioning.

15 means on the band and hold the clip against be carried by; a lever movement of the band whilst-the clipis ing secured inposition on thebandl The present inventionhasjfor'bneof its I objects to provide an improved construc f tion of tightening and sealing deviceof the type described that readily permits, a

clip" or fastener attached; to one endof the band to have thesecond end secured thereto whilst "the band is held UTIdQQ Q l 25 sion closely around the box or packagejand whilst the clip lies flat' against a. the box orpackage.

According to the 1 invention in that a face of the support which" is-to lie against a side of the-box or; package has in it. a recess forrecelvmgythef clip "In "a position in which it lies close tosaid 'side M of thebox or package and parallelwithland' close to the saidsecond-endportionof the band. Owing to this construction of the device the band is strapped tightly the box or package with the clip: in that p0;

I sition in which it is to remain after the or fastener is preferably o'fthe typ'eiwhei e in a plate formingits body has lugs jarranged to be folded down on thetbanid and clamp it securely on the plate. "Several forms of such a fastener are described in the co-pendi'ng patent application SerialNo. 57 L901 on which Patent Nof has f been granted.

. :tt'iaanie device of the type described ischaracterized.

plunger movable 7 According to a feature of the invention thesaidabutment is constituted an end port that Whilst maintainirigthetension on" v theband it can swing along a semi-circular b wall of the recess lyingtransversel yof the" path whereof the :axis-is'at theclipan'd lies acrossthe width of the band."v I U The'support'for the tensioning means may consist of one or more arcuateguidesWfor it spaced apartf These guides "may consti tute afbearing' for the tensioningmeans arm arranged to swing about fhem I111 a Z up; 5 Accordingto another feature of'theinventicvn positioning "means for the box" tr package is arranged on the support 'for locating the" clip carried by thebox or p 01: age against the said'abutment. 1

The invention also provides a tensioning device asset forth above in combination with sealing means mounted on the support-for closing the clip on the-band whilst the'ilattoris under tension; w Conveniently the sealing means comprises at plunger movable in a hole inthe support towards and awayfrom the clip; and afl'ever pivoted on the support and arranged fto reciprocate the plunger. v I -Accord1ng to a furthe -f t of the in; W e11l31011 the. sealing means gompris'esga.

ina "ho'le in' the supporttowards and away from the clip, and a lever pivoted on the support and arranged tdreQipro'catethe plungerfi L 'The'sealing means may have-actuating means arranged to be operated the tenf" s ngx o by m an f r em leifef cam, carried thereby, as t is gbeing'swung on said support and approaches its said second'endposition. p I ".Acordin'g to a further feature invention t a cutting device isarra'nged to severthe'flsecond end portion ofthe band',i

for;example automatically, whenfthe I sroning means ls'nearzor at its s'econcl' end.

of l

claims.

Several embodiments of the invention are diagrammatically illustrated by way of example in the accompanying drawings,

. broken lines, and

invention, and

Figure 1 is a side elevation showing one form of tightening device according to the invention, comprising sealing means and a cutting device for the band;

Figure 2 is a vertical section taken on the bent line 22 in Figure 1;

Figure 3 is a plan view of the tightening.

device as shown in full lines in Figure 1;

Figure 4 is a plan view of the tightening device as shown in Figure 1 when the tightening means is in the position shown in Figure 5.is a illustrating the operation of the sealing means; f

Figure 6 is 'a side elevation of another form of tightening device according to the Figure 7 is a plan view thereof, part of the tightening means being shown broken away for the sake of clearness;

Figure 8 is-a side elevation showing another form of tightening device according to the invention;

Figure 9 is a plan view-thereof;

Figure 10 is-a vertical section taken on i the line 101O inrFigure 9;

Figure 11 is a plan view of the sealing.

means, and

Figure 12 is a horizontal section through part of the sealing means taken on the line 12-12 in Figure 10.

Like reference characters designate like or similar parts in all the views.

. Referring first to Figures 1 to 5, a circular support designated generally .15 for the tensioning means aforesaid comprises two annular walls 16, 17 spaced apart in parallel relation to provide between them at one sideof the support a deep gap 18 extending inwards to a plane lying substantially along a diameter of the support. .At the opposite side of the support, hereinafter referred to as the base portion of the support, the walls 16, 17 are secured firmly together, and have fashioned in them a relatively wide positioning slot 20. which is situated at right angles to said plane and extends from the bottom of the gap 18 to the periphery of the base portion. This slot 20 serves to receive an end or side of the box or package carrying the band to one end of which is attached the clip lying flat diagrammatic plan view against the end or side of the box or package. In Figure 1 the package is indicated at 22 and the band at 23 in broken lines, while the Figure 5 shows the same in full lines and the clip 24.

At the bottom of the slot 20 there is a recess 26 .for receiving the clip 24. This recess is formed by-two parts 27, 28, '(see Figure 2), one in each of two middle por- -tions'29, 30 of the side walls of thesupport.

Two screws 32, 33, one in each face 27, 28, adjustably secure in position two blocks 34, which are adjustable towards and away from one another for accommodating clips of different width, and have each a shoulder providing an abutment 36 for the clip.

Each wall 16, 17 has in-its inner side face an annular groove 38, 39, respectively, and

an arcuate shoe 40 having two pivot pins 42, 43, each carrying an antifriction roller 44, 45, respectively, is mounted to travel. around the support from one side to the other, W1tl1 the rollers running in the grooves 38, 39. This shoe 40 has a radial bracket 48vcarrying a spindle 49, whereof one end lies in the plane of said gap 18 and has fixed on it a boss 50 having a cruciform slot 51 for receiving the second end portion of the band. This spindle 49 is part of pawl and ratchet tensioning means 54, 5 5, 56 comprising an arm 57 that is carried by the spindle 49 and, when rocked about the latter, serves to tighten the band about the package. A handle member 59 secured to the shoe'40 serves to carry the entire tightening device.

. Eachofthewalls 16, 17 has on its outer side near the middle a boss 60 having a hole 61 slanting downwards towards the said recess; 26 for receiving the clip. Two springcontrolled plungers 64 are provided, one slidable in each hole, for working on and closing the clip from opposite sides thereof., Each plunger is guided by a pin 66 in a slot 68 in the boss, to which pin 66 one end of a compression spring 70 is connected, the other end thereof being anchored to the support 15. Each boss carries a lever 72 having atone end a spherical head 73 bearing on .a plunger 64,7and at its other end an anti-friction roller 74. When these levers 72 are rocked by a wedge-shaped cam 75 of the shoe 4O co-acting with the rollers 74% described hereinafter the plungers 64 are driveninwards, as indicated in Figure 5, to clench the clip on the'band.

vWhen-the tensioning means is in the position shown in full lines in Figure 1 at one side of the support, the side wall 76 of said positioning slot 20 at the same side constitutes a guide face arranged to position the box or package 22- so'that the clip shall lie adjacent said abutment 36. This guide face 76 extends transversely of the line of pull on the second end portion of the band and terminates adjacent tofthat: endUportion. The opposite face 78 of thepositioning slot which-constitutes a channel guiderway for the box or package is preferably [provided with clamping means 80.for clamping. the box or package in position'against' the; guide face 76. As illustrated in -Figures; 1 andQ,

the clamping means is-inlthe form "of a clamping plate 80' arranged to be reciprocated by. an eccentric 82 on a spindle 83 that is journalled in the base'of thesupp'ort and carries a handle member'84. i T

The shoe of the tensioning means Lear-r;

ries at itsforward end one blade 86 of a cutting device 86, 87, whereof the co-operating blade '87 is fixedly carried by the support at the diametral plane aforesaid at thebot tom of the gap 18.. i i A v a a v a.

The described tensioning deviceis operat ed asfollows:A'clip.24 as described in the said ,cope'nding patent application has attached to it one end portion of a band 23 which is placed around the package and has its second end 'portion' lying acrosswthe clip underneath an anchor 240and between two lugs thereof, and-extending upwards. The package is then placed-into-wthe slot 20 so that the clip liesin the recess 26and the second end portion of-the band extends upwards in the slot 18 and is placed the cruciform slot 51' of the tensioning means situated in the position shown in full lines in Figure 1'. By oscillating the: lever arm 57 the tensioning meansis actuated and the band tightened around the package,ithe reaction on the clip being taken "up by the abutment 36.

the positionshown in broken lines in Figure 1 the second end portion of the band will be folded backwards on itself over the said, anchor and willlie acrossgthe cutting edge of the blades 87, as'indicated by a dot and 87 sever the band at a point'away from the clip a distance approximately equal tot he" radius of the arcuate support. The package encircled by the sealed band'can berem'oved from the apparatus, and the free endfof the= clip'can be shortf as ind cated in Figure 12, when the-rollers are rotated in oppositedirection, as de-' scribed hereinafter. 1 These rollers are pro; vided respectively with a co-axial spur gearwheel 116, 117 which mesh respectivelywith larger gear wheels'118, .119,'wh'ich are both driven simultaneously in opposite directions band extending beyondthe ened by hand, if desired. Referring 'now i to Figures those of the device shownin; Figures'eyl to 4, but the shoe 40 hasa cam- 90 irotatably, mounted on it instead of integraljt'herewith: The'levers 72 co-operating'at one endiwithj By swinging. the shoe 40. around to the other side of the support into 6 and :7; the support 15 and pawl and ratchet tensioni-ng means 54, -and 56 of this modified tensions ing device are substantially, the "same: as

the plung'ersi 64'acarryl at their other ends anti-friction rollers 74 which, whenthe shoe 40. is in the position shown in Figures 6 and 7, can be forced apart to operate the plungers 64 by rotating the cam bymeans .of its handle member 92. ,When the levers 72 are. rocked by thecam' 90an arm 94 of a belhcrank lever94, 95 -thatis fulcrumed on the support at 96 is also rocked, so that the arm 95, which carriesa movable cutter'blade 186:that co-operates witha fixed cutter'blade' 87, operates to sever the second end portion of thebandafter the clip. has been secured on the band Inl this construction the clamping plate '80tiscarried by a SCI'BWQ98 to the face. 76. If desired, .the lever 94, 95Ican.::be dispensed-with,- and "the cutting device186, 87 may be arranged as described with jreferencetoFigures'1to4. 1

a Referring nowito Figures 8 to 12' a sup-f '80 movable in the jaw of theisupport opposite port-10 0 of 'Li shap e is provided withithe guide face 76 aforesaidifor thepackage22, whilst its face 102 at right angles? thereto has said recess'226 for receiving a clip. This construction of support, obviates the use? of a slot 20 which limits the device to use with packages-of: certain sizes, and enables the device to bewplaced with the face 76 horizo'ntally onthetop face-ofpackages of'any si'ze'and withthe face 102; bearing against a vertical side @of the package. a a

The tens oning meansv comprising the shoe 40 is similar to that described above with reference to Figureslto 4, but: a stop 104" is fixedon the shoe;40.in such a position thatthe handle :member'f57 can bear against it i and, swing the tensioning, means from its starting position shown'in full lines in Figure8 roundzto the other side'of the arcuate guide 16 to its second endposition indicated in br'oken lines" in-Figure '8.- In this position thejhandle member 57can rest on a stop 106;

fixed at the end ofthe longerlimb'of the support. The ratchet wheel154 of the tensioningfmeans is c'o-axial with a'spur gear wheel 108-which meshesZ'with-a gear wheel 109 fast on the spindleof the slotted boss '50:- H

In this kqhdfitibhl the sealingmeans comprises apair of-mutilated rollers 110,

111 carried each by a vertical pivot pin 112',

113, respectively, journalled in the support atropposite sides of they recess 226, and in sucha positionfthat a flat face 114 on'each rollerservesflto close the clip on the band,

by a toothed segment 120 formed or prowhereof the arm 195 carries a blade 186. A.

spring 128 anchored at one end to a handle member 130 on the support has its other end attached to the prong 123 and tends to hold the sealingimeans and cutting device in the position shown in Figures 8 and 9.

. After'the tensioning means has been swung into its upper position shown in broken lines in Figure 8 and the actuating member 124 is moved against the action of its spring 128, the sealing means and cutting device are operated in unison, by turning the hand lever 124 about its pivot 122 in a counterclockwise direction as viewed in Figure 9. This movement of the lever 124 causes rotation of the gear wheels 118, 119 which operate the sealing rollers 110, 111 by means of their pinions 116, 117, and at the end of the sealing operation, the lever arm 195 carrying the movable blade 186 has moved ansrularly so far, owing to its connection by the rod 126 with the lever 124, that the movable blade 186 co-operates with the fixed blade 87, so that the cutting device does not sever the band until the clip has been fastened upon it.

In each of the constructions described above, the tensioning means is so mounte on the support that whilst maintaining the tension on the'band it can swing through 180 or more along a semi-circular path whereof the axis is at the clip and lies across the width of the band.

It will be appreciated that in each of the constructions described above an end portion of the band extends across one of the cutter blades when the band has been tightened and folded on itself, and that in the construction shown in Figures 8 to 12 the band is severed close to the clip.

Various modifications may be made in the details of construction described above without departing from the scope of the invention. r

I claim:

1. A tightening device of the character described comprising in combination a support having a face which is to lie against a side of a package to be encircled by a band, n whichface is a recess for receiving a clip in a position in which it lies close to said side of the package, which cliphas an anchor over which the band may be bent backwards, and to which clip one end portion of the band is to bepreliminarily attached, a tensioning means which is mounted on the support, and to which the second end portion of the band extending across the clip is tobe attached, which tensioning means is arranged to swing, whilst maintaining the tension on the band, along a semi-circular path whereof the axis is at the anchor of the clip and lies across the band.

'2. A tightening device of the character described comprising in combination a support having a face which is to lie against a side of a package to be encircled by a band, in which face is a recess for receiving a clip in a position in which it lies close to said side of the package, which clip has an anchor over which the band may be bent backwards, and to which clip one end portion of'the band is to be preliminarily attached, a tensioning means which is mounted on the'support, and to which the second end portion 7 of the band extending across vthe clip is to be attached, and an abutment on said support arranged to take up the reaction due to the pull of the tensioning means on the band and hold the clip against movement by the band whilst the clip is being secured in position on the band, which supportcomprises at least one arcuate guide along which the tensioning means is arranged to swing about an axis that is situated at the anchor of the d side of the package, which clip has an anchor over which the band may be bent backwards, and to which clipone end portion of the band is to be preliminarily attached, a tensioning means which is mountedon the support, and to which the second end portion of the band extending across the clip is to be attached, and'an abutment on said sup port arranged to take up the reaction due to the pull of the tensioning means on the band and hold the clip against movement by the band whilst the clip is being secured in position on the band, which support comprises two parallel arcuate guide members spaced apart to accommodate the second end portion of the band between them, alongwhich guide members the tensioningmeans is arranged to swing about an axis that is situated at the anchor of the clip and lies across the band.

4. A tightening device of the character described comprising in combination a sup- 7 port having a face which is to lie against a side of a package to be encircled by a band,

in which face is a recess for receiving a clip in a position in which it lies close to said side of the package, which clip has an anchor over whichthe band may be bent backwards,

and to which clip one end portion of the band is to be preliminarily attached, a tensioning means which is mounted on the support, and to which the second end ortion of the band extending across the clip is to be attached, and an abutment, on said, support arranged to take up the reaction due to the pull of the tensioning means on the band and hold the clip against movement by the band whilst the clip .is being secured in position on the band, which support comprises two parallel arcuate guide members spaced apart to accommodate the second end portion of the hand between them, along which guide members the tensioning means is arranged to swing about an axis that is situated at the anchor of the clip and lies across the band, which recess is formed in two parts, one in each of said guide members. 5. The combination with a support having a recess for receiving a clip to which one end portion ofthe band is to be attached, a tensioning means which is mounted on the support and towhich the secondend portion of the band extending across the clip is to be attached, andan abutment on ing means comprises a pair of mutilated common to said sealing meansand said'cut-f ting device, toothed wheel gearing opera ture. 7 7 v a DANIEL AMBROSE BRADLEY;

said support arranged to take up thereaci In testimony whereof I afiix signa- I rollers geared together to rotate in o posite directions and arranged to press an close the clip on the band. a a

6. The combination with a support having a recess for receiving a clip'to which one end portion of the band is to be attached, a tensioning means which is mounted on the support and towhich the second end portion of the band extending across the clip is to be attached, and an abutment on said support arranged to take up the reaction due to the pull of the tensioning means on the band, of sealing means mounted on the support for closing the clip on the band while the latter is under tension, and a cutting device arranged to sever the second end portion of the band when the clip is secured on the band, which sealing means and cutting device have an actuating member common to them both.

7. The combination with a support having a recess for receiving a clip to which one end portion of the band is to be attached, a tensioning means which is mounted on the support and to which the second end portion of the band extending across the clip is to be attached, andan abutment on said support arranged to take up the reaction due to the pull of the tensioning means on the band, of sealing means mounted on the support for closing the clip on the band while the latter is under tension, and a cutting device arranged to sever the second end'portion of the band when the clip is secured onthe band, an actuating member

Images