US2173563A - Shoe upper treating machine - Google Patents

Description

Sept. 19, 1939. w. P. OSGOOD E UPPER TREATING MACHINE SHO Filed July 26, 1937 5 Sheets-Sheet 1 Sept. 19, 1939. w. P. OSGOOD ,5

SHOE UPPER TREATING MACHINE Filed July 26, 1957 5 Sheets- Sheet 2 Sept. 19, 1939. w. P. oseoon SHOE UPPER TREATING MACHINE File 1 July 26, 1937 5 Sheets-Sheet 5 Sept. 19, 1939. w. P. 0.5600!) 2,173,563

SHCE UPPER TREATING MACHINE Filed July 26, 1957 5 Sheets-Sheet 4 a"! sov i ll i E160 *9 II I Se t. 19, 1939. w. P. oseoon 2,173,563

' SHOE UPPER TREATING MACHINE Filed July 26, 1937 5 Sheets-Sheet 5 Patented Sept. 19, 1939 UNITED STATES PATENT OFFICE 15 Claims.

The present invention relates to machines which are used in the manufacture of shoes, and more particularly to power-operated brushes, which are used therein to treat the exteriors of 5 finished shoes. The exterior portion treated may be the upper, the heel, or the sole bottom.

As disclosed in the application filed by Edwin N. Chandler June 12, 1937, Serial No. 147,939, (reference to which is made by permission), it

1 has been proposed hereinbefore to treat the exterior of finished shoes through the action of a rotary fabric brush heated both by friction from a hood engaged therewith during its rotation and from a resistance unit mounted in the hood.

While during the normal operation of such a heated brush no fire hazard is created, there is danger that the operative may forget to shut-off the heat before leaving the factory for the night and thus subject the part of the fabric brush 20 adjacent the hood to heat for such a long period as to definitely create a fire hazard.

The principal object of the present invention is to produce a shoe exterior treating machine of the fabric brush type which will automat- 25 ically separate the fabric brush and its hood upon the throwing of the machine out of operation.

Another object of the present invention is to produce a shoe exterior treating machine of the fabric brush type which will automatically cut '1 out of the circuit at least a portion of the heating means by which the fabric brush is heated electrically.

To the accomplishment of these objects, and such others as may appear hereinafter, the vari- Ef ous features of the present invention reside in certain devices, combinations and arrangements of parts described hereinafter and then set forth broadly and in detail in the appended claims.

The various features of the present invention 4.!) will be readily understood from an inspection of the accompanying drawings illustrating the best form of the invention at present known to the inventor, in which,

Figure 1 is a view in front elevation of the shoe 4?) exterior treating machine;

Fig. 2 is a view in right side elevation;

V Fig. 3 is a detail view in rear sectional elevation of the valve forming part of the hydraulic system;

to Fig. 4 is a detail view in right side elevation, partly in section, of the left hand hood, (viewing Fig. 1), together with parts of the electric heating means and the mechanism for raising and lowering thehood;

a; Fig. 5 is a detail view in plan of one of the textile strips used in building up the shoe exterior treating brush;

Fig. 6 is a detail view in plan illustrating the method of assembling the textile strips to form the brush; 5,

Fig. '7 is a detail view in sectional elevation further illustrating. the method of forming the brush and mounting it to form a wheel;

Fig. 8 is a detail view in sectional elevation of the connection between the wheel hub and the 1 driving shaft;

Fig. 9 is a detail view inright side elevation of the mechanism for supporting one of the hoods;

Fig. 10 is a detail view in rear elevation, partly in section, of the back face of one of the hoods;

Fig. 11 is a detail view in sectiona1 plan of the terminal block;

Fig. 12 is the wiring diagram, and

Fig. 13 is the hydraulic diagram.

Described in general terms the illustrated embodiment of the present invention is provided with two rotary fabric brushes each of which is identical, similarly mounted, and operated. During the shoe exterior treating operation, each brush rotates in contact with the curved internal surface of a hood, which partially surrounds the brush, thus heating the shoe exterior engaging surface of the brush by friction. This frictional-heat is supplemented by four electrical resistances mounted in the hood so as to heat the brush engaging surface thereof. With this construction and mode of operation, the shoe exterior may be presented to the heated brush immediately after the application of the waxy dressing to the shoe as the heat causes the dress- .35 ing to spread rapidly and become applied thereto in a uniform manner without care or attention on the part of the operative in determining the condition of the applied dressing.

The hood is pivotally mounted so that it may .40 be separated from the fabric brush. The mounting for the hood is provided with three adjustments so that the hood may be raised and lowered vertically, may be moved back and forth away from and towards the fabric brush shaft, .45 and may be angularly adjusted about the axis of the fabric brush shaft. thus to adapt the hood to various types of fabric brushes.

The hood is held in engagement with the fabric brush during its rotation by a hydraulic mechanism, pressure for which is derived from a rotary pump driven from the armature shaft of the electric motor from which the fabric brush shaft is rotated. With this construction when the electric motor is thrown out of operation the pump is stopped permitting the hood to drop away from the fabric brush, the oil in the hydraulic cylinder co-operating with the piston therein to act as a dash pot to cushion the drop of the hood.

Three of the four resistances mounted in the hood are connected to the electric heating circuit through a mercury switch so that when the hood drops away from the fabric brush three of the resistances are cut-out of the circuit. When the electric motor is rethrown into operation, the pump, through its recirculation of oil, brings the hood to its operating position in engagement with the rotating brush whereupon the mercury switches act to reconnect the three resistances to the heating circuit.

With this construction, when the main motor switch is pulled at the end of the day in the factory, the rotation of the fabric brush shaft is stopped, the brush and hood are separated and the electrical heating means reduced to a safe minimum. In the broader aspects of the invention, the electrical heating means may be completely cut-out, but it is preferred to reduce it to a safe medium as by this construction the hood is maintained under some heat to insure a fast start at the end of the shut-down, particularly at noon.

The illustrated embodiment of the present invention is provided with two shoe exterior treating wheels, (Fig. 1), mounted upon a common horizontal shaft l5 journalled in bearings i6 and I1. The bearings l5 and H are supported by the front upper portion of a hollow, open back columnar frame l8 having legs is which are connected to a bed plate 29 through levelling jacks 2|.

The shaft I5 is driven from an electric motor 26 mounted upon the bed plate 29. To this end, the shaft |5, intermediate the bearings l6 and IT, carries a pulley 21. A belt 28, (Fig. 2), passes around the pulley 21 and a pulley 29 mounted upon a puley shaft 30. The shaft 39 is provided with a second pulley 3| which is rotated by a belt 32 which is driven from a pulley 33, (Fig. 1), on the armature shaft 34 of the electric motor 26 secured to the bed plate 29.

The pulley shaft 39 is mounted rotatably in the arms of a yoked carrier 35 which is pivoted on a yoke 36, (Figs. 1 and 2), the arms of which are pivoted on the ends of screws 31 carried by the frame 18. The carrier 35 is provided with a boss 38 which receives loosely a horizontal rod 39 the front end of which butts against the internal front wall of the frame IS. The boss 39 may be moved longitudinally on the rod 39 to tighten the belts 28 and 32, the desired position of adjustment being maintained by a screw 49 carried by the boss and arranged to clamp it to the rod 39. With this construction an even tension is maintained on both of the belts 28 and 32.

Each of the shoe exterior treating wheels is built up from a plurality of sections, each comprising a cardboard ring 4|, (Fig. 6), having secured thereto a plurality of folded, overlapping textile strips 42, there being a cardboard spacing ring 43, (Fig. '7), interposed between each section.

Each strip of fabric, (Fig. 5), is provided centrally at opposite sides with notches 44. The strip 42 is threaded through the cardboard ring 4| and folded upon the opposite sides thereof so that the free ends of the strips extend evenly beyond the periphery of the cardboard ring 4|. The other strips 42 are folded similarly, but are superimposed upon the preceding strip, as shown in Fig. 6, all around the periphery of the cardboard ring 4| to which the strips are secured by the circular series of stitches 45.

The fabric sections and the spacing rings are mounted upon a hub comprising a tube 46 and side flanges 41 and 48 provided, respectively, with hubs 49 and 50 constructed to receive loosely the shaft I5. Each of the side flanges is lined on one face with cardboard 5|.

To build up the wheel, the flange 47 is secured to one edge face of the tube 45 by screws 52. The alternate series of fabric sections and spacing rings are then placed upon the periphery of the hub 45 until the desired length of wheel is obtained when the side flange 48 is secured to the opposite end face of the tube 46 by the screws 53 which exert sufficient pressure to cause the fabric sections and spacing rings to be clamped firmly on the hub 46 between the flanges 41 and 48.

The built-up wheel is then slipped upon the shaft l5. The wheel is driven from the shaft l5 by a driving dog 54, (Fig. I), which is secured to the flange 41 by a screw 55. The dog 54 is received in an opening 56 formed in a collar 51 secured to the shaft l5 by a set screw 58. In order to hold the dog 54 and the collar 51 engaged, the shaft I5 is provided with a bore 59 in which a coiled spring 60 is mounted. The opposite ends of the spring engage, respectively, balls 6| and 62, the peripheries of which project outside the bore 59, the shaft l5 adjacent the ends of the bore being peened as indicated at 63, (Fig. 7), to keep the balls within the bore. The balls GI and 62 are arranged to snap into an annular groove 64 formed in the internal surface of the hub 49 when the shoe exterior treating wheel is located properly on the shaft !5 with the dog 54 engaged with the collar 51.

Associated with each shoe exterior treating wheel is a hood 66, (Fig. 1). Each hood 66 is provided with a segmental back 61' having an internal concaved face 68 arranged to engage the periphery of the fabric sections during the normal operating rotation of the wheel. The hood is provided with side plates 69 and 10 which are secured to the side faces of the back 61.

The exterior of the back of the hood is provided with plates 1| and 12 forming a way 13 therebetween for a plate 14 secured in position by the conical ends of four screws 15 carried by the back plates. The plate 14 has a curvature concentric with the shaft I5 and supports adjustably a second correspondingly curved plate 76. To this end, the plate 14 is provided with a series of tapped holes 11 alternate pairs of which receive the shanks of screws 18 loosely embraced by the walls of a slot 19 formed in the plate 16. With this construction, the hood may be adjusted about the axis of the shaft l5, the desired position of adjustment being maintained by causing the heads of the screws 18 to clamp washers 89, on the screws, respectively, between the plate 16 and the heads of the screws 18.

The plate 16 constitutes one end of a link 8|, (Fig. 1) the other end of which is provided with a hub 82 which is rotatably mounted, between suitable collars, on a rod 83 projecting laterally from one end of an arm 84, (Fig. 2), centrally carried by an arm 85 one end of which is pivoted at B6 to the machine frame. The lower end of the arm 85 engages a flattened portion 87, (Fig. 1), which loosely receives the shank of a screw 89 (Fig. 9), threaded, into the flattened portion, there being a washer 90 interposed between the arm 85 and the head of the screw 89. The other end of the arm 84, which carries the rod 83, is provided with a curved slot 9I permitting the arm 84 to be adjustably secured to the arm 85. To this end the slot 9I embraces the shank of a screw 92 tapped into the arm 85 and provided with a washer 93 interposed between the arm 84 and the head of the screw 92.

The pivotal mounting of the lower end of the link 8I provides for the withdrawal of the hood 66 from engagement with the shoe exterior treating wheel to facilitate its insertion into and withdrawal from the machine.

By loosening the screw 89, the hood may be swung towards either the front or back of the machine to vary the horizontal spacing between the hood and the fabric brush shaft. By loosening the screw 92 the hood may be swung vertically to vary its height relative to the fabric brush shaft. These horizontal and vertical adjustments in combination with the angular adjustment of the hood adapt it toengage various types of fabric brushes mounted on the shaft I 5, and thus heat .them .frictionally during their rotation.

In order to supplement the frictional heating action on the wheels during their rotation, each hood is cored at 94, 95, 99, and 91, (Fig. 4), to provide for the reception, respectively, for four resistance units of standard construction. The left hand hood, viewing Fig. 1, is provided with four resistance units 98, 99, I00, and IOI, (Fig. 4) while theright hand hood viewing Fig. 1, is provided with four resistance units I02, I03, I04, and i915, (Fig. 2).

. The wires I08 and I! from the source of power are conducted into the machine through a cable I08, (Fig.2), having its terminal connected to a junction box I09 secured to the back of the frame. From the junction box I09 the wires are conducted through a cable IIO to a switch-box I II secured to the front of the frame. From the switch-box .I II the wires are conducted through a cable I I2 to the electric motor 26. From the switch-box 'I I I the power-for the resistance units in the hoods is conducted back through the cable Hi! to the junction box I09 where the wires terminate in terminals H3 and H4, (Figs. 1 and 2).

The switch-box III is provided with two switches H4 and H5, the first controlling theresistance line and the second controlling the motor line. The switch-box III is provided with an electric lamp I IBconnected to the resistance line to thus provide a visible signal when the switch H4 is closed.

As the electrical connections to and in each hood are identical in construction and mode of operation, it is considered necessary only to described those relating to a single hood that one, for instance, illustrated in Fig. 4. The right hand side of the hood, viewing Fig. l, is provided with a casing II? which houses a terminal block II8, (Fig. 11), and a mercury switch II9, such for instance, as the commercial Mercoid. As shown in Fig. 11, the terminal block II 8 is provided withthree terminals I20, I2I, and I22.

The power wires are conducted into the casing Ill from the terminal H3 in the junction'box I09 through an asbestos cable I23. The power wires so conducted into the casing II? are connected, respectively, to the terminals I20and I22. The resistance unit 99 is connected through wires carried by the cable I24 with the terminals I20 and I22. The resistance units 98, I00, and IOI are connected respectively, through wires carried by thecables I25,' I2B, and I2! with the terminals 'I2I, and I22. With this arrangement, when the switch I I4 is closed the resistance unit 99 is connected electrically to the power line, but the other units are not so connected.

In order to connect the units 98, I00, and IOI to the power line, the terminals I20, and I2I are connected to wires I28 and I29, leading to the interior of the mercury switch II9. When the hood occupies the construction line position of Fig. 4 the body of mercury I30 in the tube flows away from the wires I28 and I29. When the hood occupies the operating position of Fig. 4 the mercury flows into contact with the wires I28 and I29 thus connecting the resistance units 90, I00, and IN to the power line.

In order to elevate the hoods automatically into operating position when the motor switch H is closed and to depress the hoods automatically when the motor switch is opened, the machine is provided with two hydraulic cylinders I3I and I32, (Fig. 1), bolted to the frame, which are connected operatively to the left and right hand hoods, viewing Fig. 1, respectively.

The cylinder I3I, (Fig. 4), is provided with a bore I33 in which a. piston I34 works. The piston I34 is provided with a piston rod I35 which works through a packed cylinder head I36. A coiled spring I3! is interspersed between the bottom of the piston and a seating ring I38 carried by the bottom of the bore I34.

The upper end of the piston rod I35 engages an arm I39 one end of which is pivoted to a bracket I40 formed integrally with the cylinder I3 I. The other end of the arm I39 is pivoted to one end of a longitudinally adjustable link I4I the other end of which is pivoted to a horizontal pin I42 carried by a pair of lugs I43formed on the plate 75, (Figs. 4 and The oil for the cylinder I3I is stored, (Fig. 2), in a tank I44 carried by the bed plate 20. The oil is withdrawn from the tank I44 through a pipe I45, (Fig. 2), by a rotary pump I40 the rotor of which is connected through a shaft I41, (Fig. 1), and acoupling I48 to the'armature shaft of the electric motor. The stator of the pump I 48 is bolted to an auxiliary frame I48, (Figs. 1 and 2), the base of which is connected by binding screws I49 to the bed plate 20, there being three levelling screws I50 carried by the auxiliary frame I48 and engaged with the bed plate 20.

The oil is circulated from the pump through a valve I5I having two outlets I52 and I53 connected, respectively, to the pipes I54 and I55. The pipe I54 is connected through a T I56 to pipes I51 and I58 connected, respectively, to the bottoms of the cylinders I3I and I32. As indicated in Fig. 4, the pipe connection to the bottom of each cylinder comprises a nipple I59 having an inverted frusto-conical internal surface I80 serving as a carrier for a ball I6I which fits loosely into the upper endof the pipe fitting conducting the oil into the cylinder and thus acts as a checkvalve.

The valve I5l is provided with a spindle I62 the only unusual feature of which is that the needle face I63 thereof is provided with a groove I64 so that when the needle is seated on the seat I65 the valve is prevented from being completely closed. When the valve is opened wide the oil discharged by the pump I48 takes the line of least resistance and flows through the valve I5I into the pipe I 55 and back into the tank I44. When the valve I5I is closed partially a portion of the oil is discharged back into the tank I44 but the major portion of the oil flows through the pipes I54, I51, and I58 into the cylinders I3I and I32, thus to operate the pistons to moving the hoods into engagement with the fabric brushes.

When the machine is idle, the motor switch H5 is opened and the motor is thrown out of operation. The hoods are depressed into the position of Fig. 4 the weight of the parts carrying the pistons to the bottoms of the bores against the tensions of the springs therein. When the motor switch H5 is closed, the motor is thrown into operation, thus rotating the pump to cause oil under pressure to flow into the cylinders, elevate the pistons, and thus swing the hoods into engagement with the fabric brushes and maintain the engagement during the shoe exterior treating operation. When the motor switch I55 is opened, the motor is thrown out of operation thus stopping the pump. The weight of the parts then depresses the pistons the balls IliI acting as check valves to cause the oil beneath the pistons to be forced through a port I66 formed therein into the upper portions of the bores. This oil that accumulates in the bores above the pistons is pumped thereby upon their next upward movement through pipes I61, and IE8, connected through a T I69 to a vertical pipe I10 which conducts the oil back to the tank I44.

During the downward movement of the pistons under the weight of the parts connected operatively thereto, the oil in the bores below the pistons acts to cushion the drop of the hoods under the influence of gravity.

The hoods may be elevated into engagement with the fabric brushes by hand as the springs I31 cause the piston rods I35 to maintain their engagement with the arms I39, the hydraulic mechanism serving to maintain the hoods engaged with the brushes. It is apparent from an inspection of Fig. 4 that as the hoods are more nearly balanced when in their operating position than when they are in their inoperative position, more pressure is required to elevate them than to maintain them in engagement with the fabric brushes. With this arrangement, the valve I5I may be adjusted to build up in the cylinders sufiicient pressure to maintain the hoods in engagement with the fabric brushes such pressure being, however, insufficient to elevate the brushes automatically. This construction and mode of operation provides a simple way to throw by hand one of the hoods into operation, the hydraulic mechanism being sufficient to maintain the operating hood elevated but not sufiicient to elevate the other hood.

It will be apparent to those skilled in the art that all the resistances may be connected to the power line through the mercury switches so that the electrical heating of the hoods is shut-off upon the stopping of the electric motor. It is preferred, however, to maintain each hood under the heat derived from one of the resistances when the machine is idle as often the stopping of the machine is temporary.

Nothing herein explained is to be interpreted as limiting the invention in the scope of its application to use in connection with the particular apparatus or the particular mode of operation or both selected for purposes of illustration and explanation. While the particulars of construction herein set forth are well suited to one mechanical form of the invention, it is not limited to these details of construction, nor to the conjoint use of all its features, nor is it to be understood that these particulars are essential since they may be variously modified within the skill of the artisan without departing from the true scope of the actual invention, characterizing features of which are set forth in the following claims by the intentional use of generic terms and expressions inclusive of various modifications.

What is claimed as new, is:

1. A machine for treating the exteriors of finished shoes having, in combination, a shoe exterior treating tool, a hood therefore, electrical heating means carried by the hood, and means for moving the hood out of operating relationship with the tool and for cutting-out the electric heating means.

2. A machine for treating the exteriors of finished shoes having, in combination, a shoe exterior treating tool, a hood therefore, means for maintaining the tool and the hood out of operation and operating relationship, respectively, and means for throwing the tool into operation and for bringing the hood into operating relationship with the tool.

3. A machine for treating the exteriors of finished shoes having, in combination, a shoe exterior treating tool, a hood therefore mounted to drop away from operating relationship with the tool under the influence of gravity, and poweroperated means for elevating the hood and maintaining it in operating relationship with the tool.

4. A machine for treating the exteriors of finished shoes having, in combination, a shoe exterior treating tool, a hood therefore mounted to drop away from operating relationship with the tool under the influence of gravity, and a dash pot for cushioning the drop of the hood.

5. A machine for treating the exteriors of finished shoes having, in combination, a shoe exterior treating tool, a hood therefore mounted to drop away from operating relationship with the tool under the influence of gravity, and hydraulic means for moving the hood from its dropped position and for maintaining it in operating relationship with the tool.

6. A machine for treating the exterior of finished shoes having, in combination, a shoe exterior treating tool, a hood therefore mounted to drop away from operating relationship with the tool under the influence of gravity, and hydraulic means for maintaining the hood in operating relationship with the tool including a dash pot for cushioning the drop of the hood.

'7. A machine for treating the exterior of finished shoes having, in combination, a shoe exterior treating tool, hood therefore having a surface engageable with the periphery of the tool, electric heating means mounted in the hood to heat said surface, and means for moving the hood out of operating relationship with the tool and for cutting-out at least a portion of the lectric heating means.

8. A machine for treating the exterior of finished shoes having, in combination, a brush, a hood therefore pivotally mounted to drop away from the brush under the influence of gravity, a shaft upon which the brush is mounted, a motor for rotating the shaft, a pump connected to the motor, and a hydraulic system connected to the pump and operatively connected to the hood for maintaining the hood engaged with the brush.

9. A machine for treating the exterior of finished shoes having, in combination, a brush, a hood therefore pivotally mounted to drop away from the brush under the influence of gravity, mechanism connected to the hood, and a hydraulic mechanism including a cylinder, a piston therein, a piston rod engaged with said mechanism, a spring for maintaining the piston engaged constantly with said mechanism, a part in the piston permitting the hydraulic liquid to leak therethrough and means for varying the pressure of the liquid in the cylinder.

10. A shoe polishing machine having, in combination, a rotary polishing tool, power-operated means for driving the tool, a heater mounted for movement toward and away from the tool, and hydraulic means for moving the heater toward the tool and for holding the heater in heat exchange relation with respect to the tool during its drive.

11. A shoe polishing machine having, in combination, a rotary polishing tool, power operated means for driving the tool, a heater mounted for movement toward and away from the tool, hydraulic means for holding the heater in heat exchange relation with respect to the tool during its drive, and a single means for controlling the said tool driving means and the said heater holding means.

12. A shoe polishing machine having, in combination, a rotary polishing tool, a heater mounted for movement toward and away from the tool, electric means for heating the heater, and means operated by movement of the heater away from the tool for cutting-out at least a portion of the electric heating means.

13. A shoe polishing machine having, in combination, a rotary polishing tool, a heater mounted for movement toward and away from the tool, electric means for heating the heater, and means operated by movement of the heater away from and toward the tool for cutting-out at least a portion of the electric heating means and for cutting-in the previously cut-out portion of the electric heating means, respectively.

14. A shoe polishing machine having, in combination, a rotary polishing tool, power-operated means for driving the tool, a heater mounted for swinging movement toward and away from the tool, and hydraulic means for swinging the heater towards the tool and for holding the heater in heat exchange relation with respect to the tool during its drive.

15. A shoe polishing machine having, in combination, a rotary polishing tool, a heater mounted for swinging movement toward and away from the tool, and hydraulic means for swinging the heater towards the tool and for holding the heater in heat exchange relation with respect to the tool, and means for varying the position of the axis about which the heater swings.

WALTER P. OSGOOD.

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