US2371424A - Liquid applying machine - Google Patents

Description

March 13, 1945. w. c. CARD LIQUID-APPLYING MACHINE Filed Aug. 28, 1945 5 Sheets-Sheet 1 5 Sheets-Sheet 2 ww ww W. C. CARD pQUID' APPLYING MACHINE Filed Aug. 28,1945,

March 13, 1945.

March 13, 1945. w. @CARD l LIQUID APPLYING MACHINE Filed Aug. 28, 1943 c. card by f .SM

March 13, 1945. w Q CARD 2,371,424

LIQUID APPLYING MACHINE 5 Sheets-Sheet 4 Filed Aug. 223, l1945 .March 13, 1945. w. c.' CARD 2,371,424

I LIQUID APPLYING MACHINE Filed Aug. 28, 194s s sheets-sheet s I l l l l l l l l l l Patented Mar. 13, 1945 William C. Card,

Compo Winthrop, Mass., l l, Shoe Machinery (Corporation, Boston, Y

kassigner to Mass., a corporation of Delaware Application August 2s, 1943, serial No. 500,382 'y claims. k(ci. lit-so) This invention relates to machines for apply-r ing a stripe of liquid to irregularly shaped' articles and more particularly to machines for applying a marginal stripe of adhesive or adhesive softener to the soles of -shoes in a manufacturf ing operation .preliminary to the cementing of the solesto shoe uppers.

In the manufacture of cemented shoes, it is common practice to apply adhesive to the overlasted margin of the shoe upper and to the marginal edge of the attaching face of the outsole, allow the adhesive to dry and then apply an adhesive softener to the outsole and/or upper'just prior to placing the parts in a press for the cementing of the sole to the upper.

This invention provides an improved machine for applying automatically, marginal stripes of adhesive or adhesive softener to the soles. In

the illustrated embodiment of the invention, a'

pair of rotary brushes dip into the adhesive or softener to-be applied and are guided by the edge of a sole advanced through the machine. Pressure rolls maintain the sole at the proper pressure against the brushes and against the mechanlsm for feeding the sole through the machine. A foot treadle when depressed -by the operator of the machine moves the brushes apart and lifts the pressure rolls so that a sole maybe placed in the machine, and when the treadle is released by the operator, the brushes, pressure rolls and guide rolls are moved into operating positions and the sole is fed automatically through the machine with the application of the adhesive or adhesive softener by the brushes.

An object of the invention is to apply a marginal stripe of adhesive or adhesive softener to irregularly shaped articles, such as shoe soles, automatically, by an improved machine.

Another object of the invention is to provide a liquid applying machine having suitable devices for allowing liquid to be applied to opposite marginal edges of a shoe sole, simultaneously, and for allowing the liquid applying to be started or discontinued by the operator, at any desired point along the sole.

Other objects of the invention will in part be obvious and will in part appear hereinafter.

The machine accordingly' comprises the features of Construction, combination of'elements, and arrangement of parts, which will be exemplied in the construction hereinafter set forth and the scope of the inventio-n willbe indicated in the claims.

For a fuller understanding of the nature and objects of the invention reference should be had to the following detailed vdescription taken in connection with theaccompanying drawings in which:

Fig. 1 is a plan view looking downwardly upon a machine embodyingthis invention;

Fig. 2 is a sectional vview taken substantially along lines 2-2 of Fig. 1;

Fig. 3 is a sectional elevation taken substantially along lines 3 3 of Fig. 2;

Fig. 4 is a 'partial plan view looking downwardly on one Vend of the machine and illustrates the adhesive applying brushes separated and the pressure rolls moved away from their working positions;

Fig. 5 is a sectional view taken substantially along lines 5-5 of Fig. 4;

Fig. d is a sectional view'on an enlarged scale showing `the brackets` formoving the feed pressure roll which presses the sole into contact with the feed wheel; J i

Fig. 7 is a sectional elevation similar to Fig. 3 butillustrates the applying brushes spaced apart andthe pressure rolls elevated lfor the insertion of or removal of al sole from the machine, andV Fig. 8 is a partial plan View looking downwardly upon the machine and illustrates a shoe sole to'which liquid is being applied, about halfway through the machine.`

Referring to the drawings,` there is shown a liquid applying machine having a frame portion I0, in opposite walls of which, is journalled a shaft II. The gear I2 is secured to one end of the shaft II and meshes with a gear I3 secured to a shaft I4 also journalled in the frame Ill. A pulley I5 secured tothe end of the shaft I4 is belted to a suitable motor or drive shaft (not shown) which serves to rotate the shafts Il and I4 in opposite directions.

The two circular brushes I6 are clamped to the holders Il which are slidably'v keyed to the shaft I I so that the brushes and their holders can slide towards and away from each other and at the same time rotate with the shaft.

The'brush'es I6 dip intothe liquid bowl I8 .which is secured to the frame I 0 by the screws I9 so that it may readily be removed for clean ing. Liquid is supplied from the container 20 through the piping 2l and constant level device 22, the valve 23 being provided for cutting off the supply rwhen the b owl' I8 is removed.

The brackets 25 are provided with extendedy fork portions 26 which `straddle the hubs of the brush holders II." The brackets 25 are mounted on the guide studsl'l which extendthrough engagein slots *45 in=the brackets 25 through `ithe contact 'of the loWer the bearings 28 cast on each side of the machine frame I0.

The levers 30 which have rotatably attached to their inner endsythe rubber covered idler rolls 3|, are pivoted to the brackets 25 at 32. The rolls 3| serve to press the sole S against the brushes I6 as illustrated by Figs. 2 and 3. The pressure of L`the rolls ,3|is regulated by the. springs 33 which extend between the shoulders 34 on the brackets 25, through bores in the levers 3B and against the Washers 35, the positions vof which and accordingly the tension of the springs 33, are adjustable by the screws 35 and their associated lock nuts 31. n

The arms 40 are pivoted `at their outer endsto the frame of the machine at 4| and -,have threaded in their inner ends, the studs 42 upon which are rotatably mounted the sole edge engaging rolls 43. The studs 42 extend ,through the arms 40 and are provided with rolls 44 which bracketsi25- 'Movement of the arms '40 towards `and away `from each other causes, through the engagement .of `the studs 42 in the slots :45 inthe brackets 25, vthe brackets to move towards and away from each other respectively, the guide Astuds '.21 on which 4the brackets are mounted, 'fsliding through the bearings `28 to -permit this movement. The brushes I6 are movedrwith this movement of the straddli'ng -portion 26 ofthebrackets contacting the 'hubs of .the holders. f

' Thez-'sole-edge rguide #rollsr43 on the lstuds :412 contact the edges of the sole S as it is fedfthrough the-,machina and through moving "the arms 4|),

the brackets 25 and the brushes l5, 'cause fthe brushes `to contact the marginal areas :of both -edges -of the sole. The tension springs 46 'and 41which are attached'to the rarms :40 ,and tothe frame of the machine, urge the arms 4|) `towards each other and thus ,Ahold kthe :guide rolls 43 against theedge -of theisole. g

The toothed 'feed -Wheel '48 `is Aattached .to .the

shaft I4 on which :is mounted the `gear I3 described inthe foregoing,;and which continuously rotates the shaft |4 and the :feediwheel 48 lwhile thezmachine is inoperation. Therubber covered pressure roll 49 above the ieed wheel '48, is

fmounted for f-ree rotation upon the shaft 50 which is anchored Vto the arms by the kvset screws 52 as showngmost clearly by Fig. 6. The arms 5| are fpivotedto .the lugs 53 on the :cover -of the machine together vwith the bracket v-54 about the pivot pins 55. The vset screws `56 screwed into the brackets 54,-press the springs 51 against the arms 5| .and provides for adjustment of the pressure lof the roll k49 ,against the sole.

The.brackets 54 are, slotted at .5B .to engagethe 'pins 5.9 which are attached to thezextendedarms 50 of the yokes 6|. When the ,yokes El are moved downwardly ras will .be described, the pins 5S in the slots 5,8 o f the vbracket, 54, move the bracket aboutthepivot pins. 55causing the brackets to lift the pressure roll 49.

The yokesBI have 'threaded therein the screws 62 which Vsupport the clevis 63. The rolls 64 l(Figs. 3 vand 1) are rotatably mounted to the vlower endof :the clevis 63 In the center of this tie rod there is a block 51 carrying a hook 68 to which the hook 69 of a foot treadle (not shown) is attached. The block 61 engages the forked end of the lever 10 which is secured to the shaft 1| journalled in the frame of the machine. The other end of the lever 1t has a cam surface 12 which extends between the rollers 13 which are rotatably mounted at one end of the slide '14. The blocks 15 and 15 which are bolted to the frame of the machine, extend through the grooves 11 and 18 respectively in the slide and serve to guide the slide as it is moved forward (to-the right facing Fig. 8 of the drawings) by turning movement of the lever 1t when the .foot treadle is depressed.

The springs l8|! yextend. around the upper portions of the studs 55 between the yokes 5| and theframe of the machine and act when the foot treadle A,is not depressed, to press the yokes 6|` and the studs 6 5 upwardly whereby the rolls 3| and 49 Aare maintained in work contacting positions.

'The lslide 1:4 -has the angled walls 8| which when `the slide vis moved forwardly by the depression of the treadle :and the turning movement of .fthe lever V1l) about its pivot 1|, strike against the angled extension walls 82 on the arms "and spreads the arms v4|) apart `against Figs. l4 and '1, through the movement of the studs42 in vthe yslots 45in the brackets 25 as has 'beendescribed When the treadle is released the weight of the long arm of the lever 10 causes a reverse turning movement of the lever 1l) and the' cam surface 12 being in engagement with the vrolls 13 returns the slide 14 to the position shown in Fig. 2 and thesprings 46 and 41 urge Ythe brushes l5 into `work contacting position.

coming the resistance of the springs 8S.

In operation, the operator of the machine through depressing a treadle which is not shown, Acausesfthetreadle to pull down the hook 68, the

block.61, the tie rod '66 and the studs 55, over- The studs 165 pull the yokes '6| downwardly and this "causes-the rolls 64 to push the outer ends of the levers 30 downwardly causing the inner ends on which the rolls 3| are mounted to move upwardly to lift the rolls 3| to'theposition shown by Fig. '1. At the same time, the pins 59 attached to the yokes 6| move the brackets- 54 about the pivot .pins 55 causing the brackets to lifts vthe pressure roll 49 to the vposition shown byFig. '1.

At the same time, the short arm of the lever .10 is moved downwardly about its pivot 1| causing the Icam surface .12 on its long arm to move the slide :14 inwardly so that its angled walls 8| press against `the angled walls 82 on the arms 4i) Athereby moving the arms 4|! apart and spreading vthebrushes apart as illustrated by Figs. 4 and `'1.

The operator Vthen places the sole S to .be worked upon, in the machine with the toe at about the center line of the brushes |6 and the -forepart over the feed wheel 48. .The treadle is then released whereupon the springs cause the studs 55 to move upwardly; the slide 14 is moved rearwardly permitting the brushes .i6 to be moved by the springs 45 and 41, together until the guide rolls .43 strike theedge of the sole; the upward movement of the lyoke 6| removes the rolls 64 from Icontact with the levers 3E! permitting the pressure rolls 3| to move downwardly to press the sole against the brushes I6 and finally the uplward movement of 1the yokes 6| moves the brackets 54 to cause the pressure roll 49 the sole against the feed wheel 48.

The feed wheel 48 and the brushes I6 yare rotated continuously so that the feed wheel ,feeds the sole through the machine while the brushes I6 apply liquid from the bowl I8 to the margin of the sole.

After the sole has been fed through the ma-` chine to the desired extent, the operator again depresses the foot treadle whereupon the pressure rolls are moved away from the sole, and the brushes are spread apart, and the sole then removed from the machine.

Since certain changes may be made in the above construction and the invention could vto press be made without departing from thescope thereof, it is intended that all matter contained in the above description or shown in the accompanying drawings, shall be interpreted as illustrative and not in a limiting sense.

Having thus described my invention, what I claim as new and desire to secureby Letters Patent of the United States is:

1. A machine for applying liquid to the surface of an artic1e, comprising means for feeding `the article through the machine, means including means guidedby the edge of the article for applying liquid to the margin of the surface thereof, rollers for pressing the article towards said liquid applying means and of the guided movement thereof, and means including coordinated means actuated by the operator 'of the machine for moving said liquid applying means and said pressing means away from said surface whereby the from the machine. l

2. A machine for applying liquid to the surface of an article, comprising means for feeding the article through the machine, means including means guided by the edge of the article for applying liquid to the margin of the surface thereof, means for pressing the article towards said feeding means and arranged to partake ofthe guidedmovement thereof, and means including coordinated means actuated by the operator of the machine for moving said liquidv applying means and said pressing means away from said surface whereby the article may be removed from the machine: j

3. A machine for applying liquid to the surdiiferent embodiments of l arranged to .partake applying means and face of an article, comp-rising means for feeding the article through the machine, means including means guided by the edge of the article for applying liquid to the margin'of the surface thereof,

means for pressing the article towards said liquid arranged to partake of the guided movement thereof, means for urging the `by the operator of the vliquid applying means article into engagement with said feeding means, and means including coordinated means actuated machine for moving said and said Vpressing means f away from said surface and for restraining said s against said feed wheel, and

article may be removed lagainst said wheel, va

urging means whereby the article may be removed from the machine. n

4. A machine for applying liquid to thev surface of an article comprising a feed wheel for feeding the surface through the machine, a pair of rotary brushes for applying liquid to the opposite marginal edges of the surface, means for supplying liquid to said for contact with the opposite edges of said outsole for guiding said brushes along said surface, means for rotating saidl brushes and said feed wheel, means including apressure roll-for pressing said article against said brushes, means in-l cluding a pressurel roll forA pressing said arti-cle means including coordinated means actuated bythe operator of the .wherebyvsaid article may be removedffrom the ,y machine. V

5. A machine for applying liquid to the surface of an articleco'mprising a feedwheel for moving said article through the machine, a pressure roll opposite said wheel pair of rotary brushes for applying liquid to said ing liquid to said brushes, means including means =for contact with the opposite edges of said article for guiding said brushes along said surface,`

a pair ofpressure rolls, one opposite each of said brushes for pressing said article against saidf brushes, means for rotating said feed wheel and said brushes, and means including coordinated means actuated by the operator of the machine for moving said guiding means and said brushes apart and for moving said rolls away from said article whereby said`article may be removed from the machine'. l

brushes, means including meansl Ifor pressing said arti-cle surface, means for supply- WILLIAM c. CARD. n

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