BE430624A - - Google Patents

Description

       

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  "New machine to climb ends"
Company known as: UNITED SHOE MACHINERY COMPANY,: Belgian Public Limited Company
Priority of two patent applications filed in the United States
United States of America including an application filed on October 19
1937 in the names of: Fred Cecil EASTMAN and Arthur Frederick
PYM and the other filed on November 15, 1937 in the names of
Arthur Frederick PYM and Philip Edgar BURBY.



   This invention relates to the fitting of the shoes on their manufacturing form, in particular the fitting of the toes, and it aims to provide the loom with a machine controlled by a motor and capable of performing its work quickly and always well without requiring a great effort of on the part of the operator nor in-depth knowledge of the game. Although the invention is described here in its application to the assembly of the sewn-toe, it is understood that several of the innovations which it comprises are not exclusively reserved for this use, nor for machines controlled by a motor.



   An important feature of the new machine is the combination of improved reels with grippers serving to tighten the upper & point on the body of the last.



  In the present assembly system, the reels are used to push the upper upwards from the tip of the last before folding it inwards over the sole sole, while the clamps are used to stretch it out first. outside by

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 above the reels, then in height of the form. The various assembly operations are thus coordinated that the wrinkles appearing on the forefoot of the upper are completely erased by the external movement of the pliers without having to exert strong traction on said tip, the pliers having almost finished pulling thus on the upper before the beaters start pushing it back up to the shape, after which they stretch the upper in that direction with the beaters.



   Another feature of the invention involves the use of novel means for stretching the upper outwards to the desired extent, these means consisting of three grippers made to act one on the end of the toe, and the other two on the opposite corners of this end, and controlled by springs which make them stretch the upper outwards from above the reels when they are abandoned to the action of said springs by an ad hoc mechanism, after They keep the upper stretched in that direction as the reelers fold it inward over the sole.

   With the clamps go friction devices which serve first to increase the tensile force they exert on the upper under the action of their control springs, and which then make them pull less hard on it so as not to overtension it during folding. The use of such means to stretch the upper to the desired extent is not in principle dependent on the number of grippers employed, nor on the direction in which the stretching takes place.



   The stretch-vamp mechanism also offers several points of novelty. Thus, each clamp is easy to adjust in height of the form because it is actuated by parts that remain.

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   separated in the normal state and one of which can be moved closer to or apart from the other to effect the desired adjustment. In addition, the clamps biting the corners of the toe of the shoe are moved in height of the form, to make them stretch the upper in this direction, by their coming into contact with the bottom of rising stems located next to them but Connected thereto, said clamps also being movable around the axes of these rods in order to be able to stretch the upper outwardly across the form.

   With means for making the lateral grippers oscillate around said axes, means are combined which make it possible to adjust them beforehand around axes situated lengthwise and broadly in the form, in order to prepare them to act on uppers of different sizes.



   On the other hand, the side grippers are actuated so as to be able not only to move inversely inward and in converging directions during the folding of the upper over the first sole after it has been stretched towards the upper. outside from above the scrapers, but also so as to be able to be pulled towards the rear of the form and almost along it, overcoming the resistance of their control springs, by the tensile force exerted on them by the upper, the marginal part of the latter thus being able to assume the position determined by the reelers more easily without distorting the grippers.



   The invention also provides means by which the grippers perform their stretching movements independently of their closing mechanism, the arrangement here being such that the jaws of each gripper are brought closer to each other, to make them bite. upper, by a spring housed therein

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 and controlled by a part independent of the control of the gripper and movable so as to allow the jaws to close and then to reopen them.

   Although such a gripper system would be of particular advantage in a machine having end reels like the present machine, in which one should be able to operate the grippers in different ways on the upper, as well. than to adjust them according to the nature of the assembly 8 performed, it is obvious that the innovations of which it has been spoken are applicable to other machines.



   The invention also includes the use of novel means for determining the amount of pressure to be exerted on the upper during folding, as well as for adjusting the end reels. In the present machine, these are advanced along the boot by a lever whose fulcrum can overcome the tension of a spring to obey the resistance offered by the upper to the movement of the reels, the movement of said fulcrum also used to adjust the reels along the shoe.



   To help hold the shoe securely in place in the machine, a flexible band is provided which is clamped by a spring against the rear face or buttress part of the boot, then automatically engaged in this position, said band being attached, by the at both ends, to elastic arms that the pressure of the shoe on it can turn towards each other around axes located along the shoe. The clamping strip is returned to the inactive position by a mechanism containing a spring which is able to compress so as not to injure the operator in the event that the strip hits him on the way back.

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   Another important feature of the invention lies in the improvements made to the attachment of the tip of the vamp in the position where it is stretched to point on the last, this attachment being made with a metal wire that the operator passes. around the toe and hangs on the shoe, said thread being moreover tightened strongly against a lip or shoulder of the upper by the beaters.

   In order to ward off. the relaxation of the upper and also with the aim of facilitating the basting of the toe, the machine is adjusted so that it stops when the reelers, having finished folding the upper, exert less pressure on it in height of shape, so that the operator can then start pulling the yarn .. inward, between the reels and the upper, at the front end of the underside of the shoe, while the machine is at rest .

   When this is restarted, the aforesaid pressure is released further and the operator is then able to pull the thread inwards against the upturned part of the upper, the reels being pulled back a little while the operator continues to pull on the thread, after which they are pulled inward again to tighten the thread tightly against the marginal portion of the vamp, and also actuated so as to increase their pressure on the vamp in height of the form. While the thread is thus held tight by the reelers, the machine is restarted provided the operator, who has already hooked the thread to a seed implanted in one side of the underside of the shoe, can tie it to a seed implanted in the other side of the underside of the shoe.

   The toe clamp continues to pull on the edge of the upper during the folding of said edge inwards by the reelers, but it releases its grip before the machine stops to allow the operator to thread the toe. and it therefore has no tendency to move the bead when pulling on the vamp after the reels have partially retreated.

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   The invention also provides for the use of a new device for forming in one end of the thread to be threaded a loop which will be hooked to a seed implanted in the shoe. It will be seen that this loop-forming device is made to receive and hold one end of the thread to be threaded, and that it is moved so as to make it describe an arc of about 1800 to form a loop which is brought to a point where the operator can remove it, said device thus being actuated by the movement of a shoe rack around which it can turn.



   Another feature of the invention involves the use of a new mechanism for transmitting the driving force to various parts of the machine, or for opposing a greater or lesser resistance to their training. This mechanism has two coil springs of different power, which are installed between relatively mobile parts to be compressed by the movement of one of these parts with respect to the other under the impulse of devices associated respectively with said springs, a said devices being able to be made inactive so as not to compress the spring associated therewith while the other device compresses its own.

   In order to thus paralyze the action of one or other of the devices in question, each of them is provided with plugs arranged so as to be able to be introduced into holes (drilled in one of the relatively mobile parts) when these holes are opposite said pins, the relative movement of this part therefore having no effect on the associated spring 8 this device. When the dowels and the holes are not opposite, the part in which the holes are drilled will press against the dowels to compress the spring by the relative movement of the two aforementioned parts. It will be seen that this relative movement will compress the two springs together or separately depending on the position in which the parts of the mechanism have been adjusted beforehand with respect to one another.

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   The other features of the invention will emerge clearly from the description which follows with reference to the attached drawing, of which
Fig. 1 is a front view and FIG. 2, a right side view of the new machine;
Fig. 3, an enlarged view showing a portion of the machine, part in profile to the right and part in section;
Fig. 4 illustrates mainly in plan the end reels and their motor and regulator mechanism;
Fig. 5 shows part in profile to the right and part in section taken by line V - V of fig. 4, the driving mechanism of the reels;
Fig. 6 is a partial view of the driving and regulating mechanism of the reels in rear elevation;
Fig. 7, a section along line VII-VII of fig. 4;
Fig. 8, a section along line VIII-VIII of fig. 4;

  
Fig. 9, a similar section, but on a larger scale, of a portion of the structure shown in FIG. 8;
Fig. 10, a section along the line X - X of fig. 8;
Fig. 11, a section along the line XI-XI of fig. 8;
Fig. 12, a section along line XII-XII of fig. 8;
Fig. 13, a section along line XIII-XIII of fig. 8;
Fig. 14, a partially broken view showing, from the front and on a larger scale, the clamps and portions of the motor and regulator mechanism of each of them;
Fig. 15, a partly broken view showing in plan the same parts of the machine as in FIG. 14;
Fig. 16, a section along the line XVI - XVI: of fig. 14;
Fig. 17, a vertical sectional view of one of the side clamps;

  
Fig. 18, a side view of a fragment of the end clamp, this view also showing in section certain parts of its regulating mechanism;

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Fig. 19 illustrates, partly in side elevation and partly in section, a portion of the regulating mechanism of one of the side clamps;
Fig. 20 illustrates, partly in section, another portion of the same mechanism;
Fig. 21 is a section following the line] = -] = of fig. 3;
Fig. 22, a section along line XXII-XXII of fig. 3;
Fig. 23, a section along line XXIII - XXIII of fig.3;
Fig. 24, a partially broken view, showing from the front the end support with which the machine is fitted, as well as the means associated therewith to form a loop in the end of the thread to be threaded;

  
Fig. 25, a vertical sectional view of the clutch and associated parts;
Fig. 26, a partially broken away view showing, in side elevation, a portion of the clutch control;
Fig. 27, a plan view of a portion of the loop-forming device as it appears after the formation of a loop;
Fig. 28 illustrates mainly in section the position of the end clamp and the reels with respect to the boot just before the vamp is pushed back upwards by the reels;
Fig. 29 is a view similar to a portion of FIG. 28 and indicates the positions of the pieces at the end of the repression of the upper in height;
Fig. 30, a similar view showing the positions of the parts when the machine first stops to allow the operator to thread the tip of the upper;

  
Fig. 31, a plan view showing the grippers and the reels in the positions they occupy after the second stop of the machine, the thread to be threaded having been fixed to the shoe;

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Fig. 32, a sectional view of the parts occupying the same positions as in FIG. 31;
Fig. 33, a diagram illustrating the correlation of the movements of the active parts of the machine.



   The position that each shoe and its shape must occupy during the fitting of the toe is determined exactly by a plate 2 (fig. 1, 16) which, for the manufacture of the welt-welt, is provided as here with a descending projection 4 made to rest on the inside face of the lip of the first sole around the toe, the lower edge of this projection curving a little along the length of the shoe to lend itself to the possible bulging of the underside of the shoe at the forefoot. In order to be able to correctly place shoes varying between them in size or model, it is necessary to use different plates. This is why plate 2 is easy to remove from its support 6.

   From this support descend two projections 8 which are housed in openings formed in the plate 2 which are provided with lips 10 resting from below against other lips of said plate (see FIG. 16). On the underside of the support 6 is mounted, between the latter and the plate 2, a slide 12 which a screw 14 retains on said support and which can perform a limited movement with respect to it along the boot.



  This slideway is also provided with housings for the projections 8 of the pbrte-plate, as well as flanges 16 which descend therefrom, to engage on shoulders formed in the openings of the plate.
 EMI9.1
 plate 2. QR¯ns.le.4upport 6 is housed un.piston with spring 18 whose coming into contact with an ear 20 of the slide 12 tends to be able to allow the latter towards the front of the machine where the operator is stationed. The plate 2 is therefore held normally in engagement with the lips 10 of the projections 8 by the edges 16 of the

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 slide 12.

   Oven dismantle the plate 2, the operator moves the Slide 12 back by pushing on the lug 20, after which he can easily remove the plate from the projections 8 and put another in its place, the engagement of the new plate. 3 'operating by letting slide 12 forward again.



   The support 6 is formed at the bottom of a rod 22 adjustable in height in bearings formed in a cast iron frame 24 fixed to the top of the main frame 26 of the machine. The upper part, less coarse, of the rod 22 (fig. 14) is engaged with a screw thread formed on the outside of a sleeve 28 which is provided with a flywheel 30 to turn it, and which threads in. the frame 24. A key 32 (fig. 16) blocks the rotation of the rod 22.

   The frame 24 carries a needle 34, the position of which relative to the numerals inscribed on the steering wheel 30 indicates the height to which the shoe-place plate 2 has been adjusted. Well
 EMI10.1
 e :: 1, ::; :: du, c "t adjustment will be made so as to adapt the plate to the particular job that the machine is called to perform.
 EMI10.2
 vant de In ^ t.t. e; the 1; iachli; e running, the operator presents it. the shoe of Yt..ic position determined by the plate 2 and, of the 4ilT the machine Cülûil31lC0 to operate, the shoe 8.3 to "6; rrÉ ': 2 C01; tT.'O said plate by a support-toe S6 (fig. 3): = ¯. :: 1 of C0: describes dn3 the memorandum appended to the patent ¯ ¯ u.¯ :, r.¯ .. ùw il? Fb '"' 1" to ":; '' :: '::' - 2 (n E34.144).

   This support -bout -. ', ± - ±.: .- lT the end: .Li.la: Liiw reduced by one lise 38 1.i- -' - 'J' "li:! .. ii, 08, -; yl: :. :: - verticals m6nag6d in C. ','; ' :: s ... ', 5Ji' ¯ .. otü; iz; ¯wt blocked by a key '.' r \ i -¯i .; 42, ¯ ... ", '. ¯, had bottom of the 11, presses on a ß; i ..¯ .. 0.1--. "" pn.; .- li # it '". r the descent of 1a tie and of' -h91i <+., ..". e, -: '. r2L:' ("can 1: tight more or less vi-; S!," -) :: '?,:' .: a ', 1crl against 1 :: shoe, depending on the nature of the work to be performed, using for that one of the springs 44 and 46 or both, the spring 46 being the most powerful. These springs

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 support from below on a washer seated on nuts 50 which are screwed on a sleeve 52 slidably mounted on the rod 38.



  The springs 44 and 46 bear respectively from above against rings 54 and 56 movable in the vertical direction independently of one another. In the ring 54 are implanted, three pegs 58 (fig. 22) and in the ring 56 three similar pegs 60. These pegs are surmounted by a 'disc 62 provided with three holes 64 arranged so as to be in look at the pegs 58 when the disc occupies a certain position, and provided with three other holes 66 arranged so as to be facing the pegs 60 when the disc occupies another position, the latter being able to rotate around the rod 38 to take the 'either of these positions or a third position which leaves its two sets of holes out of alignment with the corresponding pegs.

   It can therefore be seen that the disc 62 can be raised by the spring 44 or 46, or by these two springs at the same time, by lifting the sleeve 52 and its washer 48, the raising of the disc causing the rod 38 and the support to rise. -bout 36 because it comes to rest against a shoulder 68 at the bottom of a development of the rod (fig. 3). To lift the sleeve 52, a stirrup 70 is provided which can slide on the rod 38 from below the sleeve, the top of this stirrup also being able to slide on a sleeve 72 which is integral with the disc 62 and slipped over the open part of the sleeve. the rod 38. At the top of the caliper 70 is articulated a pair of connecting rods 74 (fig. 1, 3) which are joined together by a web 76 and the bottom of which is in turn articulated to arms 78 carried forward and secured a shaft 82 mounted 8 to tilt in two cross members 84 fixed to the frame 26.

   On this shaft is also fixed an arm 85 which carries a roller 86 on which rests a cam 88 formed on the periphery of a disc 90 wedged on a cam-holder shaft 92 rotated in the arms 84.

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 in
The support -bout 36 is therefore clamped against the boot by the rise of the caliper 70, and this caliper continues its upward movement to compress the spring 44 or 46 or both, depending on the prior adjustment of the disc 62, when the part 36 presses against the shoe. The intensity of the clamping thereof against the plate 2 therefore depends on the position of the disc 62.



  To adjust this disc, on the rod 38 is mounted a toothed sector 94 of the hub from which descends a pair of fingers 96 housed in the vertical slides of the sleeve 72. The sector 94 is prevented from rising by a shoulder of the frame, and it is supported. from below by a pinion 98 forming a body with a shaft 100 rotating in the frame. The front end of this shaft carries a crank 102 which allows it to be turned and in which is mounted a spring pin 104 made to be introduced into any of three holes 106 drilled in the frame and corresponding to the three adjustment positions of the disc 62. A button 108, wedged on the front end of the spindle 104, serves to withdraw the spindle from the hole in which it is introduced, as well as to turn the crank 102.

   It is understood that when the adjustment is made so as to leave the spring 44 or 46 inactive, the pins of the ring 54 or 56 controlled by this spring will remain opposite the corresponding holes of the disc 62 and will ineffectively mount these holes, while the pegs of the other ring will abut on said disc. In order to maintain the two groups of pins in the desired position relative to each other, they are all subjected to the action of a disc 110 forming a body with the top of the sleeve 52 and pierced with holes through which the two groups of pegs.



  Two screws 112, threaded into the caliper 70 hold the disc 110 in the correct position, these screws respectively pressing against opposite sides of a protrusion on the disc.

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   The shoe is prevented from moving backwards in the direction of its length by a support 114 (fig. 1, 2, 3, 28) consisting of a flexible chain 116 covered with a strip 118 of felt or other material. suitable, made to embrace the posterior end of the shoe. The two ends of the chain rest on blocks 120 which are provided with movable pins 122 in the top of a pair of consoles 124, around axes located approximately along the length of the shoe. The two consoles are fixed in an adjustable position to arms 126 which are capable of oscillating across the shoe about the anterior, reduced ends of rods 128 movable along the shoe in pads formed in the frame.



  Each console 124 has a tongue 130 which describes a curve about an axis located across the shoe, and which fits into a corresponding curve slider 132 made in the arm 126. In addition, the console projects into a slide of similar curve 134, formed in said arm, a pin 136 on the end of which is screwed a nut 138 which serves! fix the console in the position given to it in relation to the arm. The axis of curvature of each tongue 130 and of its slide 132 is located in the vicinity of the underside of the forefoot of the shoe and, during its adjustment, the support 114 follows a direction corresponding virtually to the rising curve of the shoe. the rear face of the shoe, the adjustment being performed differently depending on the particular model of the shoe in hand.

   The arms 126 are retained on the rods 128 by caps 140 fixed by screws 142 on the ends of said rods, and in an annular recess of the means of each arm is housed a coil spring 144 (fig. 3, 23) attached by one end at the hub of the arm and the other at the hat. The springs 144 tend to oscillate the arms 126 in directions which move them apart from one another.

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 the other to straighten the tie-back tape, but which allow it to wrap the posterior end of the shoe when it is tight against it. The band is thus clamped against the shoe by a retrograde movement of the rods 128 which are fixedly coupled together by a stirrup 146 (Fig. 21). The rod control mechanism will be described later with other parts.



   The end of the vamp is driven back up to the shape and its marginal part then folded inwards over the first sole by a pair of reels 148 (fig. 4,5, 7), as is customary. in end-fitting machines. Here, these reelers are removably mounted on supports 150 in slides therein, and they are held in place by spring pins 152 which are housed in fittings 154 secured to the reel supports, and which are introduced into drilled holes. in those. To release the reelers, the pins are lowered by pulling a button at the bottom of each pin. The reels are so curved that they can be reversed in their supports for mounting the shoes of the right and left foot.

   The supports 150 of the reelers rest on a frame 158 from below a cover 160, and they are provided with curved ribs 162 which descend therefrom to be housed in a correspondingly shaped slider 164 formed in the frame of the fallers. The reels are therefore guided so as to be able to close across the boot around an axis located approximately at the point of meeting of their active edges. A sleeve 166, threaded onto a bolt 168, which passes through the frame of the reel holders and which screws into the cover 160, helps to place the latter in the correct position, the opposite faces of the supports 150 of the reel being provided recesses for housing the sleeve.

   Slides 170 formed in the frame 158 of the reel supports leave room for moving the connectors 154 with the supports 150.

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   In order to be able to move the reels forward and backward along the boot, the frame 158 of the reel carriers rests on a pair of connecting rods 172 (fig. 1, 5) spaced apart from one another across the boot and articulated. from above to lugs 174 of the mount 158 near the front thereof, and it also rests on the top of a lever 176 mounted at a point along its length on a pivot 178 which will be discussed later. . The upper arm of lever 176 is hinged by a rod 180 to the reel holder mount 158 at about halfway between its opposite sides, and is in effect a connecting rod virtually parallel to the connecting rods 172.

   The two connecting rods 172 are in turn articulated from below to lever arms 182 wedged on a shaft 184 mounted to rock in the cross members 84, and on this shaft is also wedged an arm of
188 lever 186 provided with a roller / running in a cam track 190 formed in one side of the disc 90. Grace! this mechanism, the frame 158 of the reel supports swings up around the rod 180 to cause these to push the vamp up to the shape, after which the frame is tilted down to increase the pressure of the reelers on the marginal portion of the upper previously folded over the sole sole.

   On the other hand, to move forward and backward said frame and the reels along the boot, the lever 176 rotates around the rod 178 under the action of a cam track 192 (FIG. 5) formed in a side of the boot. 'a gear wheel 194 (fig. 5) controlling the camshaft 92, as explained below, the lever 176 carrying a roller 196 which runs in said track. It is understood that when the frame of the reel supports is actuated in this way, the connecting rods 172 rotate empty around their articulations to the arms 182.



   In order to be able to advance the reelers elastically along the boot and also to be able to adjust the frame 158 of the reel supports in the same direction, the pivotal rod 178

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 lever 176 is supported by a lever arm 198 which is made to oscillate along the shoe on two short rods 200 (fig. 6) implanted in the braces 84 and located against the bottom of the rod 178, the arm 198 carrying a core 202 which joins together, on each side of the lever 176, the two parts of the hub of said arm which are spaced apart from one another.



  In the bifurcated top of the same arm is mounted a loose spindle 204 (fig. 4,8) in which is screwed the rear end of a rod 206 which projects forward through a cylindrical housing 208. This housing is permanently fixed to the frame of the machine by a flange 210 and screws 212 (Fig. 3, 13), and in its rear end (Fig. 8) is crimped a head 214 in which the rod 206 is mounted with gentle friction. This head acts as a stop pressing against the posterior ends of a pair of springs 216,218 housed in the housing 208, the spring 218 being more powerful than the spring 216. These springs respectively press from the front against two rings, 220 and 222 (fig. 12).

   In the ring 220 are implanted three dowels 224 and in the ring 222 three dowels 226, all these dowels passing through holes drilled in a head 228 (FIG. 8) crimped in the front end of the casing 208. In front of the dowels is installed a disc 230 forming a body with a sleeve 232 threaded onto the rod 206, this disc being provided with holes 234 (FIG. 11) made to come to be placed opposite the pins 224 when the disc occupies a certain position. The disc and its sleeve are provided with holes 236 made to come to be placed opposite the pins 226 when the disc is turned into another position around the rod 206. Finally, when the disc occupies a third position all the holes are out of the way. alignment with the ankles.

   It can therefore be seen that any retrograde movement of the disc 230 will be thwarted by the spring 216 or 218, or both, depending on the prior adjustment of the disc. The enlarged front of the 806 upper supports

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 against a shoulder 238 of the sleeve 232, from which it follows that the disc 230 will be moved rearwardly by any movement of the rod 206 in this direction. The upper will thus be moved by the resistance of the boot to the advancement of the reelers when this resistance becomes large enough to overcome that of the spring or springs acting on the disc 230.

   In other words, the lever 176 will then turn around the rod 180 which connects it! the mounting 158 of the reel holders to move the rod 178, around which it normally rotates, backwards, and at the same time to oscillate the lever arm 198 in this direction to exert a retrograde traction on the rod 206. We have so here a convenient way to tighten the reels elastically. against the upper lengthwise of the shoe, and to vary the intensity of this tightening according to the nature of the materials of the upper.



   To adjust the disc 230, there is provided a cylindrical piece 240 (fig. 4) journaled in the frame and provided with a sleeve which extends towards the rear and which is made to slip on the widened front of the rod. 206, this sleeve being provided with two slides 242 which penetrate fingers 244 which project forward from the sleeve 232 on which the disc 230 is formed. The rotation of the part 240 therefore rotates the disc which can be moved. backwards with the rod 206, as aforesaid, thanks to its engagement with the sleeve 232. With the part 240 forms a crank 246 which is used to turn it, this crank carrying a spring pin 248 made to hold the disc 230 in the desired position by-being introduced into any of three holes 250 drilled in the frame.

   A button 252 on the pin 248 allows it to be removed from any of said holes, as well as to turn the crank 246. It is understood that when the disc 230 occupies a position which leaves the holes

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 234 opposite the ankles 224, as indicated in the drawing, the movement of the disc 230 resulting from the resistance of the boot to the advancement of the reels will only compress the spring 218, the spring 216 then remaining inactive because the ankles 224 s 'will introduce into the corresponding holes 234 of the disc. Likewise, after adjusting the disc to a second position, the spring 216 will be the only compressed one because the pegs 226 will enter the corresponding holes 236.

   Finally, when the disc will occupy its third position. adjustment, both springs will be compressed because all of the pegs will be out of alignment with the holes in the disc.



   The tapping of the shank 206 in the spindle 204 mounted in the lever arm 198 still allows it to be rotated to adjust the frame 158 of the reel holders and the reels along the shoe, this rotating movement of the shank causing the arm to tilt. 198 forwards or backwards and consequently moving in the same direction the pivot rod 178 of the lever 176 without altering the tension of one or the other of the springs 216, 218. To thus turn the rod 206, in the cylindrical part 240 is journaled a shaft 254 whose rear end, larger, penetrates into a bore made in the anterior opening of the rod 206, these parts being joined together by a key 256 in order to be able to rotate said rod by the shaft 254, and at the same time allow it to move longitudinally relative to it.

   The larger part of the shaft 254 bears from the front against the part 240 to prevent said shaft from advancing. The front of the shaft 254 carries a flywheel 258 which serves to turn it. With this flywheel goes a mechanism (see fig. 9 and 10) which indicates the operator the position in which the reels have been adjusted, and which comprises two pinions, 260 and 262, concentric with the shaft 254 and housed in a recess. flywheel 258, and also a third pinion, 264, housed

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 in this same recess and mounted to rotate around a pin 266 located in the flywheel, this pinion being in engagement with the pinions 260 and 262.

   The pinion 260 is integral with a sleeve 268 threaded onto the shaft 254 and provided with a pair of fingers 270 penetrating a vertical slot 272 made in a plate 274 which is wedged on the frame of the machine and which encroaches on the front of the part 240 to hold it in place and block the rotation of the pinion 260. As for the pinion 262, it is integral with a sleeve 276 enveloping the sleeve 268 and mounted fixed in an opening formed in a disc 278 interposed between the flywheel 258 and plate 274, disc and pinion rotatable together around sleeve 268.



  The pinion 262 carrying one tooth more than the pinion 260, each revolution of the flywheel 258 rotates the pinion 262 and the disc 278 a certain distance from the fixed pinion 260 under the impulse of the pinion 264. The bevelled face of the disc 278 bears a graduation whose numbers are so spaced from each other that, at each revolution of the flywheel 258, one of them will be placed opposite a mark 280 (fig. 4) on the plate 274. The reels will be adjusted in different positions to adapt the machine to best act on the various models of shoes that it is called upon to fit. In order to avoid the danger of moving the rod 206 too far forward, on said rod are screwed, behind the spindle 204, locknuts 282 which remain apart from it normally, but which can be tightened against it to limit its rotating movement. .



   The reels are closed laterally over the bottom of the boot by connecting rods 284 (FIG. 4), the front end of each of which carries an articulated head 286. a lug 288 formed on each reel holder 150. The rear end of each connecting rod 284 is slidably mounted in

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 / a sleeve formed in a part 290 articulated with slide 292 movable along the boot and provided with a tongue 294 (FIG. 5) housed in a slide 296 formed in the frame 158 of the reel supports.

   Between the parts 290 and the heads 286 of the connecting rods 284 are interposed low caliber springs which can obey the pressure of the boot on the reels during the pushback of the upper in height, as well as the resistance of the shoe. upper to the closing movements of the reels during its pushing back inwards against the lip of the first sole. The connecting rods 284 carry pegs 300 which mesh with slides 302 formed in the parts 290 and limit the compression of the springs 298, which causes the parts 290 to act inelastically on the connecting rods 284 before the end of the folding of the vamp by the touts.

   In order to actuate the slide 292 so as to close the reelers, a rod 304 (fig. 5) is provided, the front end of which, less thick, is fixed to said slide and on which is threaded a sleeve 306 provided with a. nuts 308 against which a washer 310 abuts. On this washer bears the front end of two springs, 312 and 314, the spring 314 is more powerful than the other, while their rear ends bear respectively against the rings 316 and 318. In the ring 316 are implanted three dowels 320 (fig. 6) and in the ring 318 three other dowels, 322, all these dowels moving towards the rear to be housed in holes drilled at the rear of the sleeve 306 in a plays 324 coming of cast iron with this sleeve.

   The dowels 32o are arranged so as to be located opposite holes 326 drilled in a disc 328 when this disc has been adjusted in a certain position relative to the sleeve 306, the dowels 322 also being arranged so as to be located opposite holes 330 drilled in the same disc when the latter was adjusted

 <Desc / Clms Page number 21>

 in another position relative to said sleeve. When the parts occupy a third adjustment position, the dowels are no longer located opposite the holes in the disc. The advancement of the disc 328 will therefore actuate the reel closing slideway by one or the other of the springs 312 and 314, or by these two springs at the same time, depending on the prior adjustment of the parts.

   The disc 328 is able to slide over a sleeve 332 threaded over the rear end of the rod 304, and is coupled by pins 334 (fig. 6) to a pair of connecting rods 336 (fig. 4) hinged from the front to the front. 'bifurcated upper end of the rising branch 338 of an angled lever 340 which pivots on lugs 342 descending from the frame 158 of the reel supports. An adjustable connecting rod 346 connects the rear projecting branch 344 of the crank lever to an arm 348 wedged on a mounted shaft 350. rocks in the two cross members 84. On this same shaft is also wedged an arm 352 at the bottom of which is fitted a roller 354 running in a cam track 356 formed in one side of the gear wheel 194.

   It can therefore be seen that the bringing into play of the angled lever 340 drives the disc 328 forward and prints to the slide 292, through one or the other of the springs 312 and 314, or both, a movement which makes it close the reels, said spring or springs being able to obey during the last phase of the folding work after the springs 298 have ceased to compress. The connecting rod 346 is formed of two short rods joined together by a turnstile 358 which can be used to bring the reels closer or apart more or less from one another by oscillating the supports 150 of the reels.



   To help support the slide rail 304 control rod and the parts mounted on this rod, the pins 334 connecting the connecting rods 336 to the disc 328 carry rollers 360 movable in slides 362 (fig. 4) formed in the mount 158 of the reel holders. Disk 328 cannot

 <Desc / Clms Page number 22>

 therefore point to turn, and the adjustment to be carried out, to make the spring 312 or 314, or both, act during the closing of the reels, consists in turning the sleeve 306, and the parts mounted on it, so as to change the position of the pins 320 and 322 with respect to the holes in the disc. For this purpose, the rear end of the sleeve 306 carries two ears 364 (FIG. 5) which penetrate into the recesses of the sleeve 332 to engage these two sleeves with one another.

   In addition, with the sleeve 332 forms a single toothed sector 366 which is engaged with a rack 368 (FIG. 6) wedged on a rod 370 slidably mounted in the frame 158 of the reel holders. The sleeve 332 is retained on the rod 304 by a screw 372 and by a washer 374. To actuate the rod 370, in bearings formed in the front and rear parts of the frame is tiltably mounted a shaft 376 provided, at the front, with a 'a crank 378 (fig. 1, 2) and, near its posterior end, a pendant arm 380 (fig. 4, 6) wedged on it, this arm carrying a pin 382 which engages in a slide 384 formed in a arm 386 on one end of the rod 370. Another pin, 388, implanted in the hub of the arm 386, can slide into a hole drilled in the mount 158 of the reel holder to block the rotation of the rod 370.

   It can therefore be seen that the adjustment of the sleeve 306 for the abovementioned purpose is carried out by means of the crank 378 at the front of the machine. This crank carries a spring pin 390 (fig. 1) provided with an operating handle 392 and made to enter any one of three holes 394 drilled in the frame.



   To exert a traction on the end of the tip of the vamp which will help to stretch it over the body of the lump and over the sole sole, the machine has a clamp 396 (fig. 16) made to bite the lump. marginal portion of the upper at the end of the toe, as well as two darts 398

 <Desc / Clms Page number 23>

 made to bite off opposite sides of the upper at points near the corners of the toe.

   Each side clamp (fig. 17) comprises a box 400 supported in the manner explained below and divided into two at the bottom in order to be able to mount in the gap a jaw 402 integral with the boot and a jaw 404 articulated therein 406, an arm 408 rising from the latter jaw being connected by a connecting rod 410 to one end of a lever 412 of approximately semi-circular shape, which pivots at its mid-length on a pin 414 implanted in the box. The other end of the lever 412 is in turn connected by a connecting rod 216 to a closing rod on the top of which a piston 420 is slidably mounted. This piston carries a pin 422 which engages with slides 424 formed therein. rod 418, on each side of a perforation 426 in the center of said rod.

   Pin 422 is removably held in place by a click 428 which is slidably mounted in perforation 426 and carries a rounded head housed in an annular groove (not shown) of the pin. Below the click is also mounted in the perforation 426 a comparatively light spring 430 which tends to push the click up. In the box 400 is mounted, against the bottom of the piston 420, a higher caliber spring 432, this spring oscillating the jaw 404, when it can, to bring it to tighten the vamp against the jaw 402 by printing the piston 420 and the rod 418 an upward movement in the box 400, the pin 422 engaging on the rod 418 at the top of the slides 424.

   During this operation, the pinching of the upper is intensified by the action of the parts connecting the rod 418 to the jaw 404, an arm of the lever 412 and the connecting rod 410 in fact acting here as the branches of a folding elbow.



  The jaws are provided with teeth to prevent the upper from sliding between them, and they are reopened with pressure

 <Desc / Clms Page number 24>

 of the pin 422 and the spring 430 on the upper end of the piston 420, the spring 430 being able to obey to let the piston descend relative to the rod 418 when the jaws have finished opening.



   The clamp acting on the end of the tip is constructed much like each of the side clamps, except that its jaws 434 and 436 (fig. 18) are formed and arranged so that the gap left between them by their opening is virtually horizontal so that the marginal part of the upper can be easily inserted therein, while the opening of the jaws of the side clamps leaves a virtually vertical gap between them. The jaw 434 is fixedly mounted on a box 438 which the jaw 436 is articulated, the latter being provided with an arm 440 disposed angularly with respect to its clamp-vamp part and connected by a connecting rod 442 to a lever 444 which pivots on the box and corresponds to lever 412 of each side clamp.

   The lever 444 is in turn connected by a connecting rod 446 to a jaw-closing rod 448 on the upper end of which there is a piston 450 (Fig. 16), similar to the piston 420 of each of the side clamps. It is understood that the end clamp also contains a jaw-closing spring similar to the spring 432 of each side clamp, and a small gauge spring corresponding to the spring 430, as well as parts similar to parts 422 and 428 of the side clamps.



   The opening of the three clamps is effected by means of a plate 452 pressing on the top of the pistons 420 and 450. In this plate are implanted two pins 454 (fig. 14, 15) which articulate it to arms 456 integral with a bar 458 pivoting on ears 460 formed on a plate 462 secured to the frame 24. The plate 452 is held constantly. in an almost horizontal position by a pendant arm 464 forming a body with one of the pins 454, and by a connecting rod 466 articulated at the bottom of this arm

 <Desc / Clms Page number 25>

 and made to rotate around a pin 468 (Fig. 15) implanted in an ear 470 on the plate 462, the connecting rod 466 being parallel to the plate arm 456 above it.

   On the other hand, with the bar 458, forms an arm 472 which a connecting rod 474 (fig. 3, 14) couples to an arm of a lever 476 movable around the shaft 350 and carrying a roller 480 (fig. 26) on which engages a peripheral cam 482 formed on a disc 484 wedged on the cam-holder shaft 92. It is understood that this cam acts so as to lower the plate 452 to open the jaws of the various clamps and that , when it allows the plate to rise, the jaws are closed by the springs housed in the boxes of the clamps.

   A spring 485 (fig. 3), attached to lever 476, holds roller 480 constantly against cam 482 and serves to lift plate 452 when cam allows it to do so, with plate raised high enough to stay clear of the pistons 420 and 450, even when the grippers have reached the limit of their stretching movements.



   The box 438 of the end clamp is mounted in a split flange 486 (fig. 14,15) which is clamped around said box by means of a screw 488 and which pivots on the anterior bifurcated end of a lever arm 490 forming a body with a horizontal bar 492. One end of the bar 492 is wedged on the aforementioned pin 468 which is mounted loose in the ear 470 of the plate 462, while the other end of said bar is wedged on a pin 494 mounted loose in an ear 496 also formed on the plate 462. with the bar 492 forming an arm 498 which encroaches from the front on the rear arm of a lever 500 (fig. 15,16) articulated at a point of its length on a pin 02 located in the cast iron part 24.

   A connecting rod 504 connects the front of the lever 500 to a lever arm 506 (FIG. 2) wedged on a shaft 508 mounted to rock in the cross members 84. In addition, on this same shaft is wedged an arm 510.

 <Desc / Clms Page number 26>

 (fig. 3) that a connecting rod 512 connects. an arm 514 which is an integral part of the cam lever 186 serving to impart a stretching movement in height to the reels. This movement is imparted to the reels by the oscillation of the lever 186 in the direction of clockwise (fig. 3), and it will be seen that this movement lowers the connecting rod 504 to make the lever 500 oscillate (fig. 3). 16) counterclockwise and thereby lift arm 498 to cause end clamp 396 to stretch the vamp up to the top of the form as it is pushed back up by the reelers.

   To the brassupport 490 of the end clamp is articulated a connecting rod 516 (Fig. 15, 16) which is articulated from above at the lower end of a rod 518 with vertical movement. On this rod can turn a sleeve 520 whose threaded exterior threads into the part 24 and which carries a knurled head 522 serving to turn it, this head supporting the rod 518 and the vamp by engaging a nut 523 at the top of the stem. It can therefore be seen that, by turning the sleeve 520, the rod 518 and the connecting rod 516 can be raised or lowered to adjust the end clamp as required in terms of the height of the form, since this adjustment brings the arm 498 closer to or away from the lower end of the lever 500 controlling said arm.



   Each of the boxes of the lateral clamps 400 is firmly fixed in a bracket 524 (fig. 14,15), the upper and lower branches of which are provided with openings where the box is housed and between which is mounted a sleeve 526 enveloping the box, a tail 528 coming from cast iron with this sleeve threading into an opening of the caliper 524 and into a sleeve 530 mounted in a bearing 532. On the end of the tail 528 is screwed a nut 534 which tightens the sleeve 530 against the caliper 524 and which, through the shank 528 and the sleeve 526, at the same time clamps the collet box 400 firmly against the

 <Desc / Clms Page number 27>

 branches of the stirrup. The caliper 524 and the sleeve 526 therefore act here as a support for the clamp, this support resting on the part 532.

   In an almost cylindrical part of this part is fixed, by means of a pin 536 (fig. 15), a rod 538, the upper and lower ends of which slide respectively in ears 540 and 542 (fig. 14,15) formed on a console 544 mounted, as explained below, on the cast iron part 24. The lower end of the rod 538 rests on an arm of a lever 546 which is wedged on a short shaft 548 mounted to rock in the part 24. In a lug 550 of this lever is threaded the top of a screw 552 which is threaded into the part 24 and which carries a knurled head 554 to turn it.



  The rotation of this screw therefore makes it possible to first adjust the lateral clamp in height of the shoe, the rod 538 sliding from bottom to top or from top to bottom in the ears 540 and 542.



  To stretch the upper height by the right side clamp, the lever 546 going with this clamp is brought into play by a collar 556 wedged on the control rod 504 of the end clamp, the collar can be adjusted so determining the moment when it will engage on the lever 546 to put it into play during the descent of the connecting rod. The lever going with the left side clamp is operated in the same way by a collar 558 fixed in an adjustable position on the top of a connecting rod 560 which descends through an opening of the lever and which is coupled from below (fig. 3). to an arm 562 wedged on the rocking shaft 508 carrying the control arm 506 (fig. 2) of the connecting rod 504.

   It is understood that, during the adjustment of one or the other of the lateral clamps in height of the form, using the screw 552, the lever 546 approaches or moves away from its control collar 556 or 558. A screw 564 secures on the front of each shaft 8. tilts 548 a needle 556 which moves on a graduation 568 (fig. 1) of the part 24

 <Desc / Clms Page number 28>

 to indicate to the operator the amount of stretching motion printed on each side clamp. This needle is easy to adjust with respect to the graduation after placing the clamp at the desired height using screw 552, screw 564 then being tightened to secure the needle in the position given to it.



   Each side clamp 398 can move in one direction or the other along the shoe by oscillating with the caliper 524 around the axis of the tail 528, the sleeve 530 rotating with the latter in the part 532. A piston spring 570 (fig. 15) housed in the caliper 524 and pressing against this part of the part 532 which surrounds the rod 538, tends to make the clamp oscillate so as to cause its jaws to the rear of the shoe .



  To determine the initial position of the clamp, with this piston cooperates a rod 572 (fig. 16,20) which is screwed into an arm 574 integral with the part 532 and carrying a spring pin, 576, the top of which engages on an arm 578 (fig. 15) integral with the bracket 524. The spindle 576, slidably mounted in the rod 572 (fig. 20), presses against a transverse spindle 580 passing through slides formed in the rod and resting on a washer 582 Between this washer and a nut 584, screwed on the rod, is interposed a spring 586 which is more powerful than the control spring of the piston 570. The rod 572 carries a knurled head 588 which allows it to be turned and it is obvious that this rotation of the rod will place the side clamp in the desired position along the shoe.

   In addition, pin 576 and spring 586 allow the side clamp to swing back elastically under the tensile force ... exerted on it by the upper when it is folded inward over the first sole by the reelers, the overhanging of the upper being able to more easily take the position determined by the reelers without piping

 <Desc / Clms Page number 29>

 too much between the side clamp and the end clamp.



   With each bracket 544, relative to which the corresponding lateral clamp can move in height of the form as explained above, forms a rod 590 (fig.



  15) capable of rotating in the cast iron part 24 and held in place by a washer 592 and by a screw 594 threaded in said rod. By rocking the console around the axis of the upper in question, the side clamp can be adjusted across the shoe, with the two rods extending along the length of the shoe, and tilting relative to each other. so as to describe an angle corresponding virtually to that made between them the opposite faces of the end of the end of the form.

   To carry out the adjustment, each console 544 is provided with an arm 596 that a connecting rod 598 connects to the bottom of a rod 600 (fig. 14) on which is mounted a sleeve 602 screwed into the cast iron part 24, this sleeve carrying a knurled head 604 which allows it to be turned to place the clamp more or less inside or more or less outside to adapt it to the particular size of the shoe in use. On the top of each rod 600 is mounted a nut 605 which engages the head 604 to support the rod.



   In addition to the above movements, the toe clamp 396 is capable of rocking the shoe lengthwise about a horizontal axis located at the articulation points of the strap 486 and the seat arm 490, and the side clamps 398 are capable of also to tilt around vertical axes coinciding with the axes of the rods 538, the latter rotating in the ears 540 and 542. As shown in FIG. 18, a connecting rod 606 couples the box 438 of the end clamp to the bottom of a lever 608 which is mounted at a point along its length on a rocking shaft 610 journalled in the cast iron part 24.



  Lever 608 is not integral with the shaft, but it is there

 <Desc / Clms Page number 30>

 connected by a friction device which allows it to rotate at certain times relative to the lever. This friction device comprises on the one hand a ring 612 fixed to the shaft by a pin 614 in order to be able to rotate with it and, on the other hand, a flange whose upper and lower halves, 616 and 618, embrace the ring. 612 are connected together, on one side of the shaft, by a connecting rod 620. On the other side of the shaft, a lever 622 pivots on the upper half 616 of the flange and a connecting rod 624 couples its middle part to the lower half 618 of the flange.

   At the rear end of lever 622 is attached a spring 626, the upper end of which (fig. 14, 15) is in turn attached to a chin 628 implanted in the almost horizontal branch of an elbow lever 630 articulated to a pin. 632 on the aforementioned plate 462. With the upper half 616 of the flange of the friction device forms an arm 634 connected to the upper end of the lever 608 by a rod 636 which is mounted loose in a block 638 articulated on the lever 608 and which is screwed into a block 640 pivoting on the arm 634. Said rod carries a handwheel 642 which allows it to be turned to swing the lever 608 around the shaft 610 relative to the arm 634 of the flange of the friction device in order to adjust the end clamp in one direction and the other along the shoe.

   It goes without saying that the spring 626 tends to tighten the flange 616-618 around the ring 612, as well as to turn said flange anticlockwise (fig. 18) to tilt the clamp. from end to rear to the length of the shoe. The pin 614 engages in a slide 644 formed in the lower half 618 of the clamp and, when the parts assume the positions illustrated in FIG. 18, it prevents the clamp from rotating under the action of the spring 626 and consequently determines the initial position of the

 <Desc / Clms Page number 31>

 clip from end to end of the shoe.

   It will be seen later that, at a certain period of the operating cycle of the machine, the shaft 610 rotates counterclockwise, which not only allows the spring to impart movement to the end clamp. stretches the vamp along the shoe by turning .¯turn the strap of the device! friction, but makes this stretching more forceful due to the friction of the ring 612 on the flange as the shaft rotates therewith. We will also see that,! a later period of the operating cycle, the shaft 610 rotates clockwise and the action of the ring 612 on the flange then removes part of the spring 626 from its power, so that the clamp does not pull on the upper as hard as it would under the action of said spring.

   



   In order to swing the side grippers around the axes of the rods 538 and to adjust these rocking movements, mechanisms are provided virtually similar to those used here to actuate and adjust the movements of the end gripper. From part 532 going with each side clamp projects laterally an arm 646 (fig. 15) assembled by a ball joint 648 to a connecting rod 650 than a joint! ball joint 652 assembled from behind (see fig. 19) to an arm 654 forming a body with the upper half 656 of a split flange whose lower half 658 is coupled! the upper half by a connecting rod 660. This flange embraces a friction ring 662 retained on the shaft 610 by a pin 664 which meshes with a slide 666 formed in the lower half of the flange.



  The two halves of it are joined together by a lever 668 and a connecting rod 670, while the rear end of said lever is attached a spring 672 whose top (fig. 14,15) is attached! his turn! a pin 674 secured to the almost horizontal branch of an elbow lever 676

 <Desc / Clms Page number 32>

 pivoting on a pin 677 on the plate 462. It can therefore be seen that when the shaft 610 rotates counterclockwise as aforesaid, this allows the two side clamps to move away from each other by oscillating outwardly around the axes of the rods 538 under the action of the springs 672, the friction also intensifying the action of these springs on the clamps. On the other hand, when the shaft later turns in the opposite direction, the friction decreases and the springs do not push the clamps out so forcefully.

   It is clear from fig. 15 that, by oscillating outwards, each side clamp moves both along and across the shoe.



   Elbow levers 630 and 676 descend from the arms which are all hinged to a cross member 678, and one of the levers 676 carries an arm 680 which allows the three elbow levers to be moved at a time to increase or decrease the compression of the springs 626 and 672 in order to make them act more or less vigorously on the various clamps during the stretching of the upper towards the outside. In the arm 680 is mounted a spring pin 682 (fig. 14,16) which is provided with an operating knob 684 (fig. 15) on its outer end and which is made to fit into any one of the arms. several holes 686, drilled in the plate 462, to hold said arm in the position where it is adjusted.



   To turn the shaft 610, there is provided an arm 688 (fig. 16) secured to said shaft and coupled by a connecting rod 690 to a branch of an elbow lever 692 (fig. 2) which pivots on the shaft 350, l Another branch of this bent lever carrying a roller 694 on which the periphery of a cam 696 wedged on the shaft 92 rests. The roller is constantly kept in contact with the cam by a spring 698 attached to the bent lever. It is understood that the cam rotates the shaft 610

 <Desc / Clms Page number 33>

 clockwise (fig. 16), and that the spring turns it counterclockwise when the cam allows it to do so. It is therefore the cam 696 which gives the grippers their separation movements.



   It has been said that the tie-back strip 114 rests on rods 128 movable in the frame and joined together by the stirrup 146 (Fig. 21). However, the rods 128 are moved backwards, to tighten said band against the shoe, by a spring mechanism, which is controlled by the connecting rod 474 (FIG. 3) forming part of the mechanism used to open the jaws of the clamps and to cause them to close. Referring to fig. 2 and 21, it will be seen that a connecting rod 700 couples one of the rods 128 to a lever arm 702 carried by a shaft 704 mounted to rock in lugs 706 of the frame.



  Said lever arm is not integral with the shaft 704, but the latter still causes it to oscillate in the direction necessary to impart a retrograde movement to the rods 128 because a pin 708, implanted in said shaft , is housed in a slot 710 made in the hub of the arm. The shaft 704 tilts, to make the arm 702 oscillate, under the impulse of a spring 712 (fig. 3) attached at one end to a chin implanted in one of the braces 84 and, by the other end, to a arm 714 on the shaft. In order to be able to replace the tie-back strip in the inactive position, the arm 714 is connected by a connecting rod 716 to one branch of an angled lever 718 pivoting on the frame, the other branch of this angled lever carrying a roller 720 on which can engage an ear 722 of the connecting rod 474.

   It is understood that this connecting rod is raised to operate the closing of the jaws of the clamps. @ the ear 722 then moving away from the roller 720 in order to allow the spring 712 to tighten the band 114 against the shoe. When the connecting rod goes down towards the end of the cycle

 <Desc / Clms Page number 34>

 operations, the action of the ear 722 on the roller 720 places said strip in the inactive position. To avoid injuring the operator in the event that he stands too close to the machine during the retraction of the belt, on the rocking shaft 704 is wound a torsion spring 724 (fig. 21) which is attached by a end to a collar 726 wedged on said shaft and, by the other end, to the hub of the arm 702, this spring providing an elastic connection against the shaft and the arm.



   To hold the tie-back strap firmly tightened against the shoe during assembly, a pawl 728 (fig. 3) is provided, made to engage with a ratchet plate 730 wedged on the caliper 146. The pawl is articulated in a bifurcation of a support 732 which is part of a sleeve 734 (Fig. 21) mounted loose on a rod 736 implanted in the frame.



   A spring 738 is mounted on the pawl holder which tends to lower the pawl relative to its support to bring it closer to the ratchet teeth, such movement of the pawl being limited at the start by its meeting with a portion of the pawl holder (see fig. 3). . The ratchet is brought into engagement with the ratchet teeth by turning the ratchet holder, which is done by a spring 740 which is held compressed between an arm 742 (on one of the braces 84) and nuts 744 which are screwed on a threaded rod 746 in said spring and connected from above to an arm 748 forming a body with the sleeve 734.

   To release the pawl from the ratchet teeth towards the end of the operating cycle, the ratchet holder 732 is coupled by a connecting rod 750 (fig. 3, 5) to an arm 752 integral with the cam lever 186 serving to impress the reelers with the movement which makes them push back the tip of the vamp in height of the form. In order to allow the spring 740 to bring the pawl into engagement with the ratchet teeth, the connecting rod 750 is provided with a slide 754 in which a pin 756 implanted in the arm 752 is engaged.

 <Desc / Clms Page number 35>

 that, during the rise of the reels, this spindle moves to the right (fig. 5) to abandon the ratchet holder 732 to the action of the spring 740.



   The wire used to hold the tip of the vamp in the position where it is stretched & point on the form is wound on a reel 758 (fig. 1) which is mounted on a bracket 760 attached to the underside of a small table 762 secured to the right of the machine frame. As explained further below, when the time has come to thread the toe, the operator begins by tying the end of the thread to a seed implanted on the left in the underside of the shoe; then, after passing the thread around said end, he wraps it around a seed on the opposite side and cuts it flush with this seed.

   In order to facilitate the hooking of the thread to the seed on the left, the machine is fitted with the automatic device illustrated in fig. 24 and 27, which is designed to form a loop in the end of the thread that the operator threads onto said seed. . This device comprises a pin 764 going up from a block 766 mounted fixedly on the top of an arm 768 tilting from bottom to top and provided with a hub 770 movable around the support rod 38 of the end support 36. A horseshoe-shaped piece 772, secured to the top of the frame, has a flange which penetrates a groove 774 of the hub 770 to prevent the arm 768 from rising, while allowing it to oscillate around the rod 38.

   An ankle 776, crimped in the hub 770 and housed in a helical slide-778 formed in the support rod 38, gives the arm 768 a movement which causes it to describe an arc of about 180 from a point located to the right of said rod. as far as the point to the left of it when it is lifted to tighten the end rest against the shoe. Before starting the machine, the operator leans the wire against the rear face of spindle 764, then introduces it

 <Desc / Clms Page number 36>

 the end in an anterior protruding slide 780 formed in block 766 near said pin, the end of the wire being retained in this slide by a ridge 782 of the block.



  It follows from this arrangement that the subsequent oscillation of the arm 768 causes the block 766 to move from one side of the rod to the other - / 'to support the support 38 by making it / an arc, which has the effect of bending the end of the wire around the pin 764 to form a loop therein, the portion of the wire coming from the reel extending across that accommodated in the slide 780 (see fig. 27).



  When the operator is ready to hook the thread to the seed implanted in the left side of the shoe, he slides the end of the thread from the bottom to the top of the slide 780 to remove it, then he folds the portion of thread above it from below and, finally, it unhooks the loop formed there from the pin 764 and threads it over the seed driven into the shoe. This eliminates the need for the operator to wrap the end of the wire around this seed.



   The gear wheel 194 is controlled by a worm 784 (fig. 2, 25) wedged on a shaft 786 which is journaled in a bracket 788 mounted on one of the cross members 84, and which presses at the rear on a ball bearing 790 housed in a console 792 integral with the frame. On the shaft 786 is keyed a sleeve 794 carrying a clutch drum 796 that a belt 798 continuously rotates under the impulse of an electric motor 800 installed at the top of the machine.

   The drum 796 is provided with a face 802 made to come into contact with a friction ring 804 wedged on a coactive clutch member 806 which can slide along the shaft 786, but which is coupled to the latter, to rotate. with it, by two plugs 808 crimped in the member 806 and capable of sliding into openings made in a part 810 fixed to the shaft by means of a pin 812. A spring 814, housed in an annular groove of the clutch member 806 and pressing against the part 810, tends to bring the member 806

 <Desc / Clms Page number 37>

 at a point where it will be driven by the sleeve 796.

   The member 806 is controlled by a bracket 816, one branch of which is integral with a short rotating shaft 818 (fig. 2) mounted in one lug of the frame, and the other branch of which is wedged on a shaft 820 (fig. 25). , 26) rotating in another support on the frame.



  At the bottom of the branches of the caliper 816 are articulated two brake shoes 822 housed in a groove 824 of the clutch member 806. The shaft 820 carries an arm 826 (fig. 26) provided with a latch 828 under which normally engages a shoulder 830, formed on a block 832, to hold the caliper 816 in a position such that the member 806 remains uncoupled from the clutch drum 796. The block 832 is secured to a lever 834 by means of 'a screw 836 which passes through a slide 838 formed in said lever, said block being able to be adjusted to a height determined by a screw 840 pressing against the underside of the screw 836. The top of the lever 834 pivots on a branch of an angled lever 842 which in turn pivots at 844 on one lug of the frame, the other branch of this angled lever carrying a roller 846 which runs in a track 848 formed in one side of the aforementioned cam 484.

   A spring 850 tends to swing the lever 834 rearwardly to hold the shoulder 830 under the latch 828. The bottom of the lever 834 passes through a slide formed in an almost horizontal bar 852 (Fig. 2) and, below it. this bar he wears a chin 854 made to meet a shoulder 856 of that one. The bar 852 is hinged from the front to an upright arm 858 wedged on a rocking shaft 860 mounted in the frame, a spring 862 attached to this arm tending to make it swing backwards to hold the posterior end of the bar 852 against the head of a screw 864 which threads into the frame and which can be adjusted to determine the normal position of the bar.

   The posterior end thereof rests on the top of a screw 866, which is mounted in an adjustable position in an ear of the frame, and said end

 <Desc / Clms Page number 38>

 is pulled down against this screw by a spring 868.



  Finally, on the rocking a.rbre 860 is wedged a pedal 870. It can therefore be seen that the descent of the pedal advances the bar 852 which then acts on the chin 854 so as to turn the lever 834 forward to disengage block 832 from latch 828. This. allows the spring 814 to push the clutch member 806 to the point where it will be driven by the drum 796.



  To put the machine at rest after that, the lever 834 is lowered by the action of the cam track 848 on the elbow lever 842 in order to place again the shoulder 830 of the block 832 under the latch 828, after which said lever is lifted to tilt the caliper 816 so as to decouple the clutch members from one another, the operator having let go of the pedal 870. It will be seen that the cam track 848 is thus studied that the machine makes two stops before finally being put to rest after performing its work on each shoe.

 <Desc / Clms Page number 39>

 



   Instructions for use of the machine.- After presenting a shoe to the plate% so as to place the first sole of this shoe in the required position with respect to said plate, the operator introduces into the Open end clamp jaws and side clamps protrude from the vamp to the front end. The shoe is supposed to have already been pulled lengthwise and mounted in the final position on the last at the location of the sidewalls. Before placing such a boot in the aforementioned position in the machine, the operator tears off the stopper seed driven out in the end of the tip of the upper during the preliminary assembly, as well as the two lateral seeds closest to she.

   Once the shoe is in the correct position, the operator starts the machine by pressing the pedal 870. Referring to the diagram in fig.33, line D, it will be seen that as soon as the camshaft begins to turn under the impulse of the motor 800, the end rest 36 rises to clamp the boot against the plate 2, and during this ascent the arm 768 swings back and to the left around the support rod 38 of the support @ -bout to form a loop in the end of the wire w, as explained above, and to bring this loop to a point where it can be easily removed from the arm 768 by the operator.

   In order to facilitate the introduction of the marginal portion of the upper into the jaws of the end clamp, this clamp is first placed a little further behind the plate 2 than it should be when said portion marginale is bitten by said clamp. The latter therefore performs a slight rocking movement forwards or inwards under the action of cam 696 (fig. 2) when the machine starts, as indicated by line F of the diagram, the two side clamps incidentally making a corresponding tilting movement because they are controlled by the

 <Desc / Clms Page number 40>

 
 EMI40.1
 ; 1¯ = ;; z. ¯i} cts a -,;. E 182 (1'i6. 2G) acts on:, ',: 8sort ::: lodge ..:

   ]>:;, j, JGc;:, i 'V ":: 1; J, 8; lt in the boxes of the three pliers to tighten their jaws on the vamp, plate 452 (fig. 16) being raised in order to free the pistons 420 and
 EMI40.2
 45C <- :. 1.ai3 ": read the tie-back rail 114 is. Tight end m: ':': G.8 time COl1t: 'C' the shoe by the retreat of the rods 128 park '? That said band is also controlled by the cam 432. 51. tû- ':; 1-:'. ': ù: # l ± 1 .- <i # are in engagement with the upper, the end clamp @accelerates back to remove along the form (see fig.



  28), the.? side grippers swinging outward in turn
 EMI40.3
 around d <, = a :: es of the rods 538 to exert a traction on the em- è:, 'cr'col, r è.'OJ.: - 1: 1, :: 3 ::::' 1.08 ti.; es 538 to exert traction on the comb, these movements of the end clamp and side clamps
 EMI40.4
 6t, ",:

   caused by 1 springs 6l-6 8t 672 (fig. 18, 19) when i ;, l ". ::" ': ",': i <.. 1, 12 ::" <: tr1 ,. ", C10 iff the action of the cam 696 per- = c '1.i ce. àlr <:,? t the tensile forces exerted on the upper # = ;; t int ±:.;> LTlés by Lu Totétiul1 des Friction rings 612 and 662 with shaft 610. Promoted at the same instant, the reelers are @ x @ a @ ssed a bit by the oscillation of the reel holder mount 158 upwards, after which they step forward and kiss the
 EMI40.5
 end for 1;, 8 ft, ± pare =. when pushing it back upwards, the closing of the reels :: 'Ul.t delayed until towards the end of their advancement for p6clier 1> =. i: Ts é5 to;, ". ::: active rubbing prejudicially .ur 1:: 6tss from the tip of the vamp.

   These movements of the reels i; r fcnt us 1s s n: -. Ttr-3 ru ét5.t to repress the upper in: ¯.:;. T ,:. TI 'piu =, good.' - the cam, 1SO ,,,. , 3), which makes lt¯ ....., 7¯tttl: '¯ jp loss-reel upwards, also serve to exhaus-: -1 ..' :: .. reelers, this -ilouvement has then little or no effect on 1 '.? 1.) :: ..: ..-. (.. ::: because the 1: iiriz: r 560 is space from the arm 498 to the '::' -, -, (vcir rir- 1C) and l ( ;;.:; le: -1 <;:> ;: 5 # 6 spac61 also necklaces r '.

   V5 ± (, 'l-J ..:;.' Fi. ';:'. 14). , when the pincss have almost finished tilting outwards, the frame 158 of the reel-holders bacoule so as to force the upper back upwards by the

 <Desc / Clms Page number 41>

 reelers and bring these to a point where they can fold the marginal portion of the upper inward over the first sole (see fig. 29), the various clamps being lifted at the same time to make them stretch the sole. vamp in height of the form. During this stretching, the pawl 728 (fig. 3) holds the tie-back strip tight against the shoe.



  The beaters are then advanced further, then firm to make them push the upper inwards over the thinned edge of the first sole and up against the lip of the latter whose inside side touches the plate 2 to fight. pressure from beaters. During this action of the rabateu = s, the end clamp and the side clamps are moved in the opposite direction, in other words inwards, by the tensile force exerted on them by the marginal portion of the vamp, this force of traction being however reduced by rotating the shaft 610 and its friction rings 612, 662 in the opposite direction which remove part of their power from the springs of the clamps.

   It is now clear that the side clamps thus oscillate inwardly about the axes of the rods 538 in converging directions while moving both along and across the shoe, and that they are made capable of also oscillating towards the rear almost along the boot by the tensile force exerted on it by the marginal portion of the upper, against the springs 586 (fig. 20), so as not to over-pipe or wrinkle said marginal portion , as explained above.

   With the reelers having almost finished folding the upper over the sole, the darts, which have continued to hold the marginal portion of the upper without letting it slide into their jaws, open enough to let go, the shaft 610 having then turned as much as necessary so that the pins 614 and 664 prevent the clamps from tilting outwards. Shortly after that, the machine stops, the

 <Desc / Clms Page number 42>

 beaters having been previously raised a little to reduce their pressure on the vamp.



     The first stop of the machine lasted, the parts then occupying the positions shown in fig. 30, the operator slides the end of the thread to be threaded out of the slot 780 of the block 766 of the looper (fig. 24) which is now to the left of the support rod 38 of the end rest, then he bends said end over the portion of wire above it, after which he removes from pin 764 the loop thus formed and hooks it to a seed that the operator may have implanted on the left in the underside of the shoe, after stopping the machine.

   Then pulling on the left-right thread, the operator on step # 5: around the toe and begins to tighten it between the reels and the upper at the end of the underside of the shoe (fig. 30), as far as it allows the loosening of the reels operated before the machine comes to rest. Then, continuing to pull on the wire in this way, the operator restarts the machine. The reels immediately move up a little so that the thread can be pulled firmly inwards against the upturned edge of the vamp, after which said reels are partially retracted and opened.

   As the operator continues to pull on the thread, the reelers feel advanced and closed again to clamp the thread firmly against the upturned edge of the vamp, and they have also lowered to increase their pressure on it, then tightened. more by a stronger compression of the spring or springs serving to tighten the support -bout against the shoe. The machine then stops a second time leaving the reels in the positions shown in fig. 31 and 32, and the operator immediately winds the thread around the seed implanted on the right in the underside of the shoe, then he cuts it at this location. He now turns the machine back on

 <Desc / Clms Page number 43>

 to bring back the pieces. their starting points.

   Before being removed from the boot, the reels are lifted to loosen them from the upper. As shown in fig. 5, the cam tracks 198 and 356 imparting to the reels their forward movements (line A of the diagram) and their closing movements (line B) respectively present in a and b enlargements which then ensure rapid decompression of the or closing springs (fig. 4) of said reels, as well as a rapid decompression of the spring (s) (fig. 8) which compress during the advancement of the reels along the boot, this decompression loosening those of the upturned edge of the vamp during their raising.

   Line C of the diagram of fig. 33 shows the movements made by the darts as they stretch the upper in height of the last, as well as those made by the reelers as they push the upper in the same direction over the tip of the upper. form. On the other hand, line E indicates the closing movements of the grippers and line G, the movements of the clutch members. Finally, the two vertical lines of the same diagram indicate the moments. where the machine makes its two stops during assembly.



     After removing the shoe from the machine and before presenting it with another shoe, the operator again introduces the free end of the thread to be threaded into the loop-forming device.


    

Claims (1)

ABSTRACT The invention relates to a new toe-lifting machine provided with reels serving to fold the upper inward over the edge of the sole of a shaped shoe, as well as clamps designed to tighten the upper. the upper at different points on the forefoot of the last, said machine being characterized by one or more of the following points or all of these points: <Desc / Clms Page number 44> 1 The various grippers stretch the upper outward from above the reel under the action of springs which are only made capable of actuating the grippers by the movement of devices first blocking the movement of them. ci outwardly against said springs; 2 The control springs of the grippers can be adjusted all together using the same adjuster; 3 The grippers are actuated by said springs by rotating clamping devices coupled to the grippers and prevented from rotating at first by the following blocking devices 1; 4 The aforementioned clamping devices and blocking devices are movable around a single shaft which, during operation of the machine, rotates so as to separate the devices mounted secondly those mentioned first in order to allow the springs to rotate the latter to actuate the grippers; 5 The shaft causing the engagement of the grippers carries friction rings which, during the action of the springs on the grippers, move so as to increase the power of the latter. EMI44.1 : t jus 0 :: ¯: 1 ^? I., x; :: ;: l,; Ll1 i :, "eu 3ens inversa to decrease this power and consequently to attenuate the intensity of the stretching of EMI44.2 upper lV'2 -:!. J .: :) raoatt3urs move inwards puv¯ ,: l ':: pli' ::;. ' j .'-: m? -; igno over the first sole; 5 "L ';;; s ariii22l', tX eL, friction are held in contact with the following @orrage devices 3 by a set of connecting rods coupling the control springs of the clamps to said devices; 7 The end clamp is moved along the shape, to make it stretch the upper, by the joint rotation of two connecting rods EMI44.3 or 1: T.-, around one mi.c b. :: 8, CIS connecting rods or levers rotatable relative to each other about said axis to perform preliminary adjustment of the end clamp; <Desc / Clms Page number 45> 8 The jaws of the toe clamp virtually extend along the form, and said clamp is automatically moved towards the end of the toe after inserting the marginal portion of the upper into its jaws and before closing them. here to make them bite said marginal portion; 9 Each gripper derives its pulling movements in height from an oscillating arm which remains spaced from its control at the start, and which can be adjusted in relation to it in such a way. first place the clamp to the desired height; In order to be able to adjust the lateral clamps across the form, their supports are able to oscillate with them around axes located along the form; in addition, said clamps are movable relative to their supports around axes located in height of the form in order to be able to stretch the upper outwards; 11 The lateral grippers are adjustable along the form around horizontal axes by means of devices capable of oscillating with them around vertical axes during stretching of the upper outward; 12 When the upper is folded inward by the reelers, the side darts, which continue to hold the upper taut, are turned inward overcoming the resistance of their control springs, and they are also moved towards the upper. rear, overcoming the resistance of other springs, by the traction exerted on it by the upper; Each clamp has a spring-loaded closing mechanism, which is controlled by means which can be moved away from the clamps or brought into engagement with them to close or open their jaws, said means being actuated independently of those serving to stretch the clamp. 'vamp by the darts; <Desc / Clms Page number 46> 14 The following closing mechanism 13 consists of an angled lever mounted on the box of each clamp and connected by a connecting rod to one of the jaws and, by another connecting rod, to a rod controlled by a spring; 15 The darts stretch the vamp outwards from above the reels while the latter remain spaced from the edge of the first sole in height of the last, the darts then pulling the upper in height at the same time as the reels push it back in the same direction; The pinças are actuated by a lever mounted to rock on a movable support subjected to the action of a spring, springing allowing said support to be moved by the resistance offered by the upper to the movement of the reelers; 17 L @ following mobile support 16 is adjustable in order to EMI46.1 POL7¯: 7? Is the position of the beaters in relation to the (;,: .. :: t: "ls \.:. 7" '(; 16 A band î.iei7.bl¯. Made to embrace the rear end or buttress part of the shoe during assembly, rests on movable rods so as to be able to clamp said strip against the shoe, these rods carrying arms which are connected to the strip and that the pressure of the shoe on that -ci brings them closer to each other by rotating them around the axis of those; EMI46.2 1 ':: "Lu band'? RJ"! 'A: 3se-coltrefort is tightened against the shoe by a shaft which is turned for this purpose by a spring, @t which is turned in the opposite direction by another spring to replace the band in inactive position, this other spring being able to compress if, by chance, the band hits the operator; The motor mechanism is controlled so as to stop the machine after the first internal movement of the reels in order to allow the operator to thread the toe of the shoe, after which the machine is restarted to bring the shoes. <Desc / Clms Page number 47> reelers tighten the basting against the upturned edge of the upper, the machine stopping on its own a second time, while the reels remain tight against the basting, to allow the operator to attach the basting to the bead. the shoe ; 21 The darts open to release the upper before the first stop of the machine, this stop taking place after the reels and the form have made a relative movement between them in order to reduce the pressure of the former on the upper ; 22 In the interval between the two aforementioned stops, the reels are first loosened further from the vamp to make it easier to tighten the bead around the tip of the vamp, after which the pressure is increased and the reels are also moved a little. below their innermost positions before moving them inward again to tighten the bead against the upper; 23 A loop is formed in the end of the end-tacking thread by a mechanism consisting of an arm which is capable of oscillating around the support rod of the end-support and which is brought into play by the movement of the latter towards the shoe; 24 To transmit the driving force to certain parts of the machine or to oppose a greater or lesser resistance to their movement, the use of a mechanism comprising two coil springs of different calibers interposed between two parts whose movement serves to compress said springs together or separately; <Desc / Clms Page number 48> An arrangement of the following mechanism 24 whereby one of the relatively movable parts acts on the springs through the insertion of concentric rings against which said springs lean against, the aforesaid part pressing on pins (implanted in said rings) and bearing holes in which said pins can be introduced to paralyze the action of one or the other of the springs, or of both, depending on the way in which the lambs and the relatively moving parts have been adjusted beforehand one by one compared to others.