US3007182A

US3007182A - Shoe upper shaping machine

Info

Publication number: US3007182A
Application number: US811097A
Authority: US
Inventors: Lauretti Piacentino
Original assignee: Individual
Current assignee: Individual
Priority date: 1959-05-05
Filing date: 1959-05-05
Publication date: 1961-11-07
Anticipated expiration: 1978-11-07
Also published as: ES252644A1

Description

Nov. 7, 1961 P. LAURETTI 3,007,182

SHOE UPPER SHAPING MACHINE Filed May 5, 1959 '7 Sheets-Sheet 1 lull llllll BYfWMWwa/M ATTORNEYS Nov. 7, 1961 P. LAURETTI 3,007,182

- SHOE UPPER SHAPING MACHINE Filed May 5, 1959 '7 Sheets-Sheet 2 im' xx WM s m Mmmm m hg s s@ N k'lmslvmam 1 i y @Y E: 5\`

ATroRNEY Nov. 7, 1961 P. LAURETT! 3,007,182

SHOE UPPER SHAPING MACHINE Filed May 5, 1959 '7 Sheets-Sheet 5 l 7; INVENTOR.

Padre/zh@ naef/f Nov. 7, 1961 P. LAURETTI SHOE UPPER SHAP-ING MACHINE '7 Sheets-Sheecl 4 Filed May 5. 1959 INVENTOR. fz'efefzzz'zza laure zii/ l BY M @w YM Nov. 7, 1961 P. LAURETTI I 3,007,182

I SHOE UPPER SHAPING MACHINE Filed May 5, 1959- '7 Sheets-Sheet 5 Filed May 5, 1959 '7 Sheets-Sheet 6 INVENToR. dazzzw az/effin' P. LAURETTI SHOE UPPER SHAPING MACHINE Nov. 7,1961

7 Sheets-Sheet Filed may 5. 1959 Illu fida/@filza law/'275 United States Patent Orifice snm/,isa SHQE UPPER SHAPNG -MACHHQE Piacentino Lani-etti, Newville, Pa. Filed May 5, i959, Ser. No. 811,097 14 @latina (Ci. 12-53.5)

This invention relates to machines for shaping the back part of shoe uppers, including counters, and in particular to improvements in the machine shown in my United States Patent No. 2,9l5,765, dated December 8, i959, for Shoe Upper Shaping Machine.

The objects of the invention are to provide an apparatus of the .foregoing kind with improved wiping means for turning the marginal Flange at the base of the upper, inwardly, and improved control means for effecting operation of the apparatus without sacrice of any of the iadvantageous features of the aforesaid machine.

As herein illustrated, the apparatus includes a heel end form about which the upper may be placed, a mold part movable about the heel end form to shape the upper 4to the contour of the external surface of the form, and to hold the shaped upper `with a portion of its bottom margin projecting above the bottom of the form, a pair of wiper blades having curved edges corresponding to the sides of the form at the heel end, means pivotally supporting the wiper blades for closing movement above the bottom of the form in a plane parallel thereto, to fold the opstanding margin inwardly against the bottom, and means operable, following engagement of the mold part with the form, to advance the wipers along the sides ot' the form and then to swing the wipers inwardly over the bottom. The mold is mounted on a carriage movable to and from the form and there is power operable means for effecting movement of the carriage and hence of the mold into and out of engagement with the form. There is also a carrier mounting the wipers for movement to and from the form independently of the mold and power operated means for eiecting movement of the carrier and hence of the wipers to position them along the opposite sides of the form and, during the latter part of said movement, to swing the wipers inwardly over the bottom of the form. Retraction of the mold is eiiected by the power operated means associated therewith and there is means operable by retraction of the mold to retract the wipers concomi-tantly and independently of the power operated means, which eifected forward movement of the wipers. Yielding pressure is applied to the upper sides of the wipers concomitantly `with the wiping action, in a direction perpendicular to the bottom of the form, so as to compress the margin as it is wiped inwardly over the bottom. Preferably there are several shaping devices, or assemblies, each of which is made up of a form, `a mold, power operated means for effecting movement of the mold, and a carrier mounting the wipers, and these several shaping devices, or assemblies, are disposed about the perimeter of a rotary table so as to be movable in a predetermined path with reference to la place of loading. rthus, uppers may be mounted successively on the devices as they move past the place of loading and be removed when they return to the place of loading, the period of timel consumed during their movement from and to the place of loading being sufficient to permit setting of the back part under pressure and heat. There is means for effecting rotation of the table and other power operated means .operable at a place of dwell, following loading of an upper, to efiect movement of the carrier and hence the wipers, to advance the wipers and close them over the end of the form. Near the end of the path of movement, at the side of the place of loading toward which the table approaches, there is means for effecting operation of the first power operated means to retract the mold and the wipers.

The invention will now be described in greater detail with reference to the accompanying drawings wherein:

FG. i is a plan View of the machine partly in section, showing la shaping assembly with an upper clamped between the form and the mold;

FIG. 2 is a vertical section longitudinally of one of the assemblies, showing an upper clamped between the form and the mold;

FlG. 3 is a front elevation of one of the assemblies;

FG. 4 is a fragmentary plan view, partly in section, of Vthe forward part .of one of the assemblies;

PEG. 5 is a vertical section transversely of one of the assemblies, showing the wipers in their open position prior to movement inwardly over the bottom of the form;

FIG. 6 is a plan view taken on the line 6 6 of FIG. 5, showing the wipers in the same position as shown in FIG. 5;

FiG. 7 is a corresponding plan view showing the wipers moved inwardly over the bottom of the form;

FIG. 8 is a front elevation of the machine showingthe turntable with a plurality of molding assemblies mounted thereon for movement `about `a horizontal axis in the direction of the arrow;

FIG. 9 is a rear elevation of the machine showing the mechanism for stepping the table around;

FlG. l0 is an elevation partly in section taken in a vertical plane parallel to the axis of rotation of the table;

FiG. l1 is a diagram of the pressure system;

FIG. l2 is a Wiring diagram;

FlG. i3 is a diagrammatic view of the movement of an assembly from 'loading position to wiping position showing the relation of the valve stem to the ram control switch; and

FiG. i4 is a diagrammatic view of the latter part of the circular movement of an assembly back to loading position showing the relation of the valve stem to the cam for separating the mold parts.

As herein shown, FiGS. 8, 9 and l0, the apparatus has a rigid, hollow frame 1li, mounting transversely thereof vertically spaced, parallel angle bars 12-12 to the upper two of which there is fastened a bearing plate 14. A bearing 16, extends forwardly from the plate (FlG. 10), in `a horizontal position and contains a horizontal bearing passage yin which there is journaled a shaft 1S. A table 2G is fastened to a yforwardly projecting end of the shaft i3 and is adapted to be rotated thereby in a vertical plane and to carry la plurality of shaping assemblies 22 in a circular path in the direction of the arrow, as shown in FlG. S.

'Each of the shaping assemblies 22, reference being had to FlGS. l to 7 inclusive, is made up of a rigid form 24, a mold part 26, power operated means 2S, for effecting movement of the mold part relative to the form, and wiper mechanism 3G. There are sixassemblies each of which is mounted as an independent unit on a hollow box-like casting 32 open at the top and at its forward end, having a bottom 32u, spaced parailel, upstanding side walls 32h-32h and a rear wall 32e, as shown in FlGS. 2 and 3, the latter being bolted or otherwise suitably fastened to the table. The form 24 is fastened bottom up to the bottom of the U-shaped casting at its forward end (FG. 2), preferably being removably secured thereto, as disclosed in detail in the aforesaid application. As also shown therein, a heating element 34 is disposed in the casting in a position to heat the form. The mold part 26 is fastened to the forward end of a rod 36, which has on it a hub 38 the latter carrying laterally and downwardly extending arms 4th-40, the lower ends of which rest upon guides ft2-4Z. The hub 38 and arms 46 constitute a carriage which supports the rod 36 for horizontal movement in the casting so as to insure linear movement of the mold. The rear end of the rod 36 extends through suitable bearings in the forward end 44 of the cylinder 46 of the power operated means 28 and has at its inner end a piston 43. The forward end 44 of the cylinder is bolted to the casting with its rear end extending inwardly toward the center of rotation of the table. At the inner end of the cylinder there is a valve block 47 containing a port 49, through which lluid pressure is delivered to the block and two inlet ports 49a-49a, one of which is connected to the rear end of the cylinder by a port 53 and the other of which is connected to the forward end of the cylinder by way of a passage 50 and port 55. A pair of exhaust ports 51-51 provide for exhausting each end of the cylinder as fluid pressure is supplied to the opposite end. A valve plate 57 is disposed across the two exhaust ports 51-51 and one of the inlet ports so that in one position it permits flow of fluid pressure from the port 49 to one of the ports 49a and in the other position permits flow of fluid pressure from the port 49 to the other of the ports 49. The valve plate is shifted by a valve spool 52, slidably mounted in the block, which has projecting from the block, at its opposite ends, operating spindles 59.

The mold part 26 is made up of a rear part 54 and forwardly extending side parts 56-55 (FIG. l), connected to the rear part by links 58-58 and these parts are advanced into engagement with the rear end of the form and yieldingly pressed into engagement with its sides by a pair of levers 60-60 pivoted at 62--62 on the casting which have engagement with lateral projections 64--64 at the forward ends of the parts 56-56 being yieldably held engaged therewith by means of compression springs 66-66. Since the construction and operation of the form and the mold parts constitutes the subject matter of the previously mentioned application, further description of the function of these parts is not deemed necessary herein.

Each casting 32 (FIGS. 3 and 5), has at the inner sides of its upstanding walls 32b-32b, near their upper edges, horizontally disposed grooves 68-6S, which slidably receive outwardly directed flanges 70-70 at opposite sides of a rigid carrier 72, so that the latter is movable in a plane parallel to the bottom of the form. The underside of the carrier 72 is recessed to receive a at bearing plate 74 Iwhich is movable height-wise therein. The bearing plate 74 is held in the recess by screws 76 extending downwardly from the carrier plate and threaded into the bearing plate. Springs 78 mounted on the screws between the under side of the cam plate and the upper side of the bearing plate yieldably urge the bearing plate downwardly. A pivot pin 84 is fastened to the bearing plate 74 and supports, at the underside of the plate, a pair of wiper blades 77-77 (FIGS. 6 and 7). The adjacent surfaces of the blades at their rear ends are recessed so that they can be interengaged to swing on the axis of the pin with their surfaces in a common plane. The inner sides of the wiper plates have curved edges 7S-78 which correspond to the surface of the form and the blades are supported by the bearing plate 74 so that their undersurfaces are parallel to and substantially in the plane of the bottom surface of the form. Since the wipers are mounted on the bearing plate 74 they will yield perpendicularly with respect to the plane of the bottom of the form according to the thickness of the material making up the bottom flange which may include, in addition to the upper material, counter material and lining material and, at the same time, maintain a rm pressure between the wipers and the margin so that the latter will be conformed to the bottom of the form.

Each wiper has an arm 80 extending laterally from its rear end, to the opposite side of the pivot pin 84, the extremity 83 of which bears upon the edge of the U- shaped casting and is free to Slide along the edge until it strikes an abutment or limiting block 85 fastened to the edge of the casting. Prior to engagement of the arms with the abutments the wipers travel forwardly with their carrier, spread apart, as shown in FIG. 6, the ends of the arms sliding reely on the edges of the casting, and the wipers being held open by contact with the sides of the upper. The wipers remain wide open until the crotch at the pivoted ends contacts the margin of the upper at the rear end of the form. At this point the extremities 83-83 meet the abutments which stop them so that further forward movement of the carrier moves the pivot S4 ahead of the extremities thus pivoting the wipers inwardly over the bottom of the form, as shown in FIG. 7. Movement of the carrier forwardly is effected after the rnold has been engaged with the form by power operated means 88 in the form of a cylinder containing a ram 87, shown in dotted lines (FIG. 2). Rearward movement or retraction of the wipers is effected by a plate 90 bolted to the rear end of the carrier 72 which has a nger 92 extending downwardly therefrom into a position to be engaged by a part of the mold, so that when the mold is retracted the carrier and hence the Wipers are retracted simultaneously, independently of the power operated means 88.

As previously pointed out, the several shaping assemblies are mounted on the table 20 so as to turn in a vertical plane about the horizontal axis of the shaft 18. Mounting the table in a vertical position makes it convenient for an operator to stand facing the machine and to place the upper on each form as it moves into position at the top of the machine. Having placed an upper on the form the operator depresses a suitable treadle 94 (FIG. 9), at the base of the machine, which rst effects forward movement of the mold part 26 into engagement with the form 24 by displacing the valve spindle 59 which, in turn, shifts the valve 52 in a direction to supply fluid to the rear end of the cylinder 46. The treadle is normally held elevated by a spring 93 so that the lever 97 does not have contact with the spindle 59, as is shown in FIG. 10. After shifting the valve the treadle is released and a pair of push buttons are depressed which effects rotation of the table in a counterclockwise direction, as shown in FIG. 8. The table turns through onesixth of a revolution and then cornes to a stop. Simultaneously, the next assembly moves into position at the top of the machine with the mold and `wipers retracted so that the molded upper can be removed and another upper placed about the form preparatory to shaping. Retraction of the mold and wipers is eifected just before the assembly reaches the top position by a cam roll 96 (FIG. 9) situated in the path of movement of the assembly, which engages the valve 52 and shifts it, so as to admit fluid pressure to the opposite end of the cylinder 46. The wiper carrier 30, at the lateral position, is moved forward to wipe the margin inwardly over the bottom of the form simultaneously with the movement of the succeeding mold parts situated at the loading position into engagement.

The time it takes for each assembly to travel from the top where it is loaded around to the top again for unloading is sucient to set the upper under the pressure and heat employed especially if the upper material is coated or impregnated with a stiffener.

Rotation of the table and supply of uid pressure to the several cylinders is initiated and carried out as follows: On the rear end of the shaft 18 (FIGS. 8 and 9) there is fixed a ratchet plate 100, containing in its peripheral edge six notches 102. An arm 104 is pivotally mounted on the shaft 18 and has pivotally connected to its distal end the upper end of a rod 106 which protrudes from a cylinder 108 (FIGS. l1 and l2). The arm 104 has pivotally mounted on it a ratch 110, the outer end of which is adapted to engage one of the recesses 102 and is held engaged with the periphery of the ratchet plate by means of a spring 112, connected between it and the arm 104, so that when the ratch reaches one of the #s notches it will drop into it. The piston 108 is pivotally fastened at its lower end to a bracket 114 at the base of the frame. A double-acting solenoid operated valve 118 (FlG. l2) is mounted at the lower end of the cylinder selectively to supply iluid pressure to the opposite ends of the cylinder to advance and retract the rod itin.

Starting with the machine at rest, the mold part 26 is retracted from the mold part 24, the ram 87 is retracted, the wiper carrier Sti is retracted, and the ratch l110 is advanced as far as it will go so that when power is supplied to the machine in the rst instance there is no possibility of the table rotating while .the operator has 4his hands in position which might result in injury to Power is supplied to the machine, as shown in FIG. l2, by a master switch 126. Having placed an upper about the mold part 2lithe operator depresses the treadle 94 which operates mechanically through a rod 95 and lever 97 (FG. l0), `to depress the spindle 59 at the upper end of the valve spool 52 and hence to shit't the spool downwardly thereby admitting air through pipe 1M and distributor 146 to the rear end of the cylinder i6 to advance the carriage and hence to move vthe part 26 intovengagement with the part Depression of the treadle 94 also closes switch t28 which shifts the solenoidoperated valve 133 in a direction to permit air to ilow through the pipe lada to the rear end of the cylinder 8d and hence to advance the ram 37. The switci S1 is normally closed and during the forward movement of the carriage the operator holds the forward ends or the upper taut so that the mold part 26 will press thc upper smoothly about the form 2d. The switch 12S is also operated to energize a double-acting solenoid actuated valve 118, so as to supply air through a pipe 1Mb to the upper end of the cylinder idd to retract the rod 1% and hence the ratch 116. At this point if it should be desirable for some reason to remove the upper before proceeding further with completion of the molding and wiping of the flange the rod 142 may be pushed rearwardly to rock the lever 146 clockwise, thereby to engage the lower end of the stem 59' and push it upwardly. Upward movement of the stem 59 supplies fluid to the opposite end of the cylinder 46 Ito retract the mold part 26. The operation may then be started over again. lf the assembly is properly held between the mold parts to the satisfaction of the operator after they have been brought into engagement by depression of the treadle `94, the operator then releases the treadle and depresses the two buttons 13b and 132. Two buttons are employed as a safety measure to make it necessary for the operator to use both Vhands to eli-ect rotation of the table and hence to keep .the hands out of the way of the movement -o the table. Depression of the two buttons energizes the double-acting solenoid actuated valve 138 in a direction to retract the Vram S7. Retraction of the ram 87 closes a circuit through the double-acting solenoid actuated valve 118 in a direction to advance the rod 1% and hence the ratch 110 so as to turn the table through one-sixth of a revolution and bring it to a stop with the rear end of the wiper carriage in alignment with the retracted ram S7.

A pin M1 (FIG. 9) on the arm 1li-i, by engagement with a lever 163 as the arm 13d moves counterclockwise for engagement with the next notch 162, tilts the arm 163 toward the center of rotation of the table. Inward movement of the 1&3 rocks an arm 1%35 away from the periphery of the ratch plate so as to withdraw a detent at the end of that arm from the notch 102 in which it rests. The detent travels along the surface of the ratchet plate until the next notch is reached, whereupon it drops into that notch since the arm 163 in the meantime has been released by movement of the pin 101 beyond it. The detent on the arm 1%5 thus limits the rotation of the table by engagement with the next knotch 102. A springr 14W holds the detent engaged within the not-ch.

As the mold assembly, which has been loaded, moves counterclockwise the iirst one-sixth revolution, the spindle 59 at the upper end of the valve 47 on the rear of the cylinder 46 moves close to a normally closed switch S1, but since the spindle is depressed does not engage this switch and hence the assembly comes to a stop in readiness for the wiping operation, the ram being still retracted. If, however, the valve 47 has not been depressed the spindle 59 opens the switch S1 so that the ram stays retracted. Now the operator places a second upper about the mold part 24 and depresses the treadle 94. This time the treadle, lby mechanically shifting the valve S2 to supply air to the cylinder 46, advances the part 26 into engagement with the part 24, closes the switch 128 so asto retract the latch and also makes a circuit through a double-acting solenoid 138 to supply air to the cylinder 88 to advance the ram S7. As the ram 37 advances it closes a switch S2. The second assembly is now ready to be moved into a position for wiping the margin, the

rst having lbeen wiped, hence the operator pushes the two

buttons

130 and 132 again. This time depression of the button operates iirst to close a circuit through the solenoid 138 to retract the ram and then to rotate the table another one-sixth of a revolution. In order to prevent rotation of the table prior to retraction of the ram the switch S2 is -located so that it is not closed until the ram has moved rearwardly through part of its travel, that is, far enough to be disengaged from the moving assembly. As soon as the ram closes the switch S2 the solenoid 11S is operated to supply pressure to the cylinder 103 to advance the table.

As each mold assembly completes its circular travel and reapproaches the top position the lower end of the depressed stem 55%* engages a cam roll 96 which elevates it, 'thereby supplying huid pressure to the opposite end oi the cylinder lo to retract the mold part 26 and hence to permit the molded assembly to be removed and the next upper to be placed about the mold part 24 in readiness for molding.

Pressure iluid is supplied to the cylinders 16 from a suitable source through a conductor 14d at the rear end of a shaft iti and through a hollow passage axially of the shaft 1S to a distributor 146 at its forward end. The distributor is rotatable with the table and from the distributor .there extend flexible conduits 148, one to each of the valve blocks -47 at the ends of the cylinders 46.

Each of the forms 2d is heated, as previously indicated, and the several heaters 34 are connected through suitable wiring to an outlet box fixed to the shaft '1S so as to rotate therewith. The outlet box is electrically connected to suitable wiring extending lengthwise of the Shaft 1d to commutator rings 152-152 on the shaft which in turn are engaged by brushes 154-15@ for supplying current from the source of current to the heaters.

For certain molding operations, such as for California shoes, the lower margin of `the upper assembly is not folded inwardly and yet it is desirable to be able to use this same equipment for shaping the upper. Accordingly, a switch 15o (FlG. l2) is provided for disconnecting the solenoid 13S so that the cylinder 8 will not be supplied with iluid pressure as the assembly moves into position and hence the Awipers will not be advanced.

it should be understood that the present disclosure is for the purpose o illustration only and that this invention includes all modiiications and equivalents which fall within the scope of the appended claims.

I claim:

l. In a machine for shaping uppers, a heel end form, a mold part Vmovable about tie heel end form to shape an upper to the external contour of the form and to hold the shaped upper with a portion of its bottom margin projecting about the bottom of the form, a carriage mounting the mold for movement into engagement with the form, a carrier, means supporting the carrier for linear movement inthe direction or" the carriage in a plane above the form, Wipers, means pivotally mounting the wipers on the carrier, means supporting the undersides of the wipers in a plane of the bottom of the form, pressure applying means operable on the uppersides of the wipers yieldingly pressing them toward the plane of the bottom of the form, power operated means for effecting movement of the carriage to move the mold into engagement with the form, other power operated means for effecting forward movement of the carrier, an arm extending from the rear end of each wiper laterally across its pivot and means on the carrier support operable by engagement with the ends of the arms, as they advance with the carrier to block said ends, so that during the latter part of the forward movement of the carrier the pivot is advanced relative to said ends, thereby swinging the wipers inwardly over the bottom of the form.

2. In a machine for shaping uppers, a heel end form, a mold part movable about the heel end form to shape an upper to the external surface of the form, and to hold the shaped upper with a portion of its bottom margin projecting above the bottom of the form, a turntable mounting the form, a carriage on the table movable toward and away from the form and power operated means lon the table for effecting movement of the carriage into and out of engagement with the form, means operable to effect rotation of the table by steps from a place of loading through a predetermined path back to the place of loading, means for supplying pressure to the pressure operated means, a valve operable at the place of loading to admit pressure fluid to the pressure operated means to advance the mold into engagement with the form, a carrier also mounted on the table, said carrier mounting wipers for movement along opposite sides of the form and swinging movement inwardly over the bottom of the form, power operated means situated along the path of movement of the table at a place of dwell, operable to advance the carrier to move the wipers into position and close them over the bottom of the form, and means adjacent the loading place at the side away from which the table moves operable to intercept and shift the valve to cause said first power operated means to retract the mold and the wipers.

3. In a machine for shaping uppers on forms, a turntable, a plurality of forms mounted on the table, a mold associated with each form, means mounting each mold for movement into engagement with its form, and power operable means, operable to advance each mold into engagement with its form, a source of uid pressure, means for stepping the table around to advance each form in succession from a place of loading through a predetermined path back to the place of loading, a valve operable at the place of loading to admit pressure fiuid to said pressure operated means, a carrier on the table mounting wipers for movement over the bottom of the form after the mold has been engaged with the form, other power operated means situated along the path of movement of the table operable on the carrier at a place of dwell to effect movement of the wipers associated therewith over the bottom of the associated form, and means adjacent the place of loading at the side away from which the table moves automatically operable to intercept and shift the valve to supply fluid pressure to the power operated means in a direction to retract the mold and the wipers as each form returns to the place of loading.

4. In a machine for shaping uppers, a turntable, a plurality of molding devices uniformly spaced about the ta le, each molding device including a form, a mold movable toward and away from the form, power operated means for effecting movement of the mold, and a carrier movable to and from the form mounting wipers for pivotal movement over the bottom of the form when the latter have been advanced to a position opposite the sides of the form, means for effecting rotation of the table, step by step, from a place of loading through a predetermined path back to the place of loading, to bring each of the molding devices in turn to the place of loading, a valve at the place of loading 'operable to admit fluid pressure to the power operated means associated with the molding device at the place of loading at that time, other power operated means situated at a place of dwell for effecting movement of the carrier of a given molding device after it has left the place of loading, and means at the side `of the place of loading away from which the table moves operable to shift said valve as a given molding device approaches the place of loading to supply fluid pressure to the power operated means in a direction to retract the form and the wipers.

5. In a machine for shaping uppers, a turntable, molding devices arranged on the table to hold an upper therebetween with the marginal portion of the bottom of the upper projecting upwardly therefrom, said molding devices comprising engageable male and female parts, symmetrically disposed wipers on the table movable inwardly from the heel end of the male mold part about the sides and over the bottom to fold the marginal edge inwardly against the bottom, power operable means for bringing the mold parts together at a loading position, treadle means for effecting operation of the power operated means, power operated means for effecting rotation of the table to move the engaged mold parts from loading position to a lateral position, switch means for initiating operation of the lastnamed power operable means, wiper actuating means at said lateral position operable to advance the wipers, operation of said wiper actuating means being effected by operation of the treadle as the latter is operated to bring the mold parts of the next assembly together at loading position, said wiper actuating means being retractable by the operation of said switch means again to effect the next movement of the table, and a second switch means operable to delay rotation of the table until said wiper actuating means has been retracted.

6. A machine according to claim 5, wherein there is a manually operable means for rendering the wiper actuating means inoperable.

7. In a machine for shaping uppers, a turntable, a plurality of molding assemblies arranged on the table to hold an upper therebetween with the marginal portion of the bottom of the upper projecting upwardly therefrom, each molding assembly comprising engageable male and female parts, symmetrically disposed wipers on the table movable inwardly from the heel end of the male part about the sides and over the bottom to fold the marginal edge inwardly against the bottom, first power operable means for moving the mold parts together at loading position, treadle means for effecting operation of the first power operated means, second power operable means for effecting rotation of the table to move the engaged mold parts from loading position to a lateral position, switch means for initiating operation of the second power operable means, wiper actuating means at said lateral position operable to advance the wipers, operation of the last means being effected by operation of the treadle as the latter is operated to move the mold parts of the next assembly together at loading position, but only in the event that the mold parts at said lateral position are engaged, said wiper actuating means being retractable by a second operation of said switch means when the latter is operated to effect the next movement of the table, and a second switch means operable to delay rotation of the table following actuation of the first switch means until said wiper means has been retracted.

8. In a machine for shaping uppers, a turntable, a plurality of molding assemblies arranged on the table to hold an upper therebetween with the marginal portion of the bottom of the upper projecting upwardly therefrom, each molding assembly comprising engageable male and female parts, symmetrically disposed wipers on the table movable inwardly from the heel end of the male mold part about the sides and over the bottom to fold the marginal edge inwardly against the bottom, a first power operable means for moving the mold parts together at loading position, treadle means for effecting operation of said first power operated means, a second power operable means for effecting rotation of the table to move the engaged mold parts from loading position to a lateral position, a pair of serially connected electric switches for initiating operation of the second power operable means, wiper actuating means at said lateral position operable to advance the Wipers, operation of the last-named means being effected by operation of the treadle as the latter is operated to move the mold parts next in order together at the loading position, one of said switches of said serially connected switches being operable by movement of the assembly to said lateral position in the event that the preceding mold parts moved to said lateral position are not engaged to render the wiper actuating means at said lateral position inoperative.

9. ln a machine for shaping uppers, a turntable, molding devices arranged on the table to hold an upper therebetween with the marginal portion of the bottom of the upper projecting upwardly therefrom, said molding devices comprising engageable male and female parts, symmetrically disposed wipers on the table movable inwardly from the heel end of the male mold part about the sides and over the bottom to fold the marginal edge inwardly against the bottom of the male mold, a lluid motor operable to move the mold parts together, a valve movable from one position to another to supply fluid pressure to the motor, a lever spaced from one end of the valve, a treadle operable to thrust the lever against the end of the valve to supply liuid to the motor in a direction to move the mold parts together, and a manually operable lever disposed opposite the other end of the valve for shifting the valve means in the opposite direction to supply fluid to the motor in a direction to retract the mold parts.

l0. In a machine for shaping uppers, a turntable, pairs of mold parts arranged on the table to hold an upper therebetween with the marginal portion of the bottom of the upper projecting upwardly therefrom, said mold parts comprising engageable male and female parts, symmetrically disposed wipers on the table movable inwardly from the heel end of each male mold part about the sides and over the bottom to fold the marginal edge inwardly against the bottom, a uid motor associated with each pair of mold parts operable to move the mold parts together, a valve for supplying lluid pressure to each fluid motor, a treadle operable to move the valve associated with the pair of mold parts at the loading position in one direction to supply fluid to the motor in a direction to move the mold parts into engagement, a fluid motor for rotating the table, a pair of serially connected electric switches, and a circuit operable thereby to eifect operation of the fluid motor for rotating the table to a lateral position, a fluid operated ram and a pneumatic valve for supplying pressure to the ram at said lateral position, a normally closed first switch at said lateral position, said lirst valve as it moves to said lateral position being operable when disposed in a direction to close the mold parts to leave said first switch closed, but when disposed in a position to retract the mold parts to open said normally closed first switch, and a second switch operable by the treadle when the latter is actuated to move the next pair of mold parts into engagement at the loading position to effect operation of the pneumatic valve if said first switch is closed.

`11. In a machine for shaping uppers, a turntable, pairs of mold parts arranged on the table to hold uppers therebetween with the marginal portion at the bottom of the upper projecting upwardly therefrom, said mold parts comprising engageable male and female parts, symmetrically disposed wipers on the table movable inwardly from the heel end of the mold parts about the sides and over the bottom to fold the marginal portion inwardly against the bottom, a lluid motor associated with each pair of mold parts operable to move the mold parts together, a valve for supplying iiuid pressure to each tluid motor, a treadle operable to actuate the valve of a pair of mold parts at loading position to supply fluid to its motor in a direction to move the mold parts into engagement, a iluid motor operable ratch for rotating the table step by step, a pair of serially connected electric switches, and a circuit operable thereby to effect operation of the lluid motor to advance the ratch in a direction to effect rotation of the table to move the pair of mold parts at loading position to a lateral position, a fluid operable ram including a second valve operable to advance and retract the ram, a normally closed first switch, said first valve as it is moved to said lateral position being operable when disposed in a direction to close the mold parts to leave said first switch closed, but when disposed inra position to retract the mold parts to open said iirst switch, a second switch operable by the treadle when lthe latter is actuated to move the next pair of mold parts at the loading position together to eifect operation of the ram if said first switch is closed, and a third switch operable by advancement of the ram to render the fluid motor for effecting rotation of the table inoperative until the ram has retracted.

12. ln a machine for shaping uppers, a heel end form, a mold part movable about the heel end form to shape an upper to the external contour of the form and to hold the shaped upper with a portion of its bottom margin projecting above the `bottom of the form, a carriage mounting the mold for movement into engagement with the form and a carrier supported for linear movement in the direction of the carriage in a plane above the form, said carrier containing a downwardly open recess at its underside, a plate yieldably supported in the recess, a pivot stud fixed to and projecting from the underside of the plate and a pair of wipers mounted on the stud with their lower sides substantially in the plane of the top of the form, said wipers being yieldable heightwise of the form by engagement with the margin as the wipers are moved inwardly over the form to form the bottom ange.

13. In a machine for shaping uppers, a heel end form, a mold part movable about the heel end form to shape an upper to the external contour of the form and to hold the shaped upper with a portion of its bottom margin projecting above the bottom of the form, a carriage mounting the mold for movement into engagement with the form and a carrier supported for linear movement in the direction of the carriage in a plane above the form, said carrier containing a downwardly facing recess at its underside, a plate disposed in the recess, bolts disposed in the carrier with their lower ends extending into the recess and screwed into the plate to support the plate in suspension in the recess, springs mounted on the bolts between the carrier and the plate yieldably holding the plate downwardly displaced with respect to the carrier, a stud projecting from the underside of the plate and a pair of wipers pivotally mounted on the stud, said plate yieldably holding the wipers in the plane of the bottom of the form.

14. A machine according to claim 13, wherein the bolts are disposed symmetrically with respect to the longitudinal and transverse center lines of the plate.

References Cited in the tile of this patent UNITED STATES PATENTS 1,197,439 Brock Sept. 5, 1916 1,891,259 Duplessis Dec. 20, 1932 2,271,682 Dodge Feb. 2, 1942 2,305,689 Gross Dec. 22, 1942 2,342,154 MacDonald Feb. 22, 1944