US2478524A

US2478524A - Sole cover lasting machine

Info

Publication number: US2478524A
Application number: US630188A
Authority: US
Inventors: Jr Anthony Cocozella; Albert J Cocozella; Clarence E Cocozella
Original assignee: United Shoe Machinery Corp
Current assignee: United Shoe Machinery Corp
Priority date: 1945-11-23
Filing date: 1945-11-23
Publication date: 1949-08-09
Anticipated expiration: 1966-08-09

Description

Aug. 9, 1949. A. COCOZELLA, JR, ETAL 2,478,524,

I SOLE COVER, LASTING MACHINE Filed Nov. 23, 1945 :5 sheet'sesheet 1 QINVENTORS afi Z, %6. 6420M;

g- 1949- A. cocozELLA; JR; ET AL 2,478,524

SOLE COVER LASTING MACHINE Filed Nov. 25, 1945 3 Sheets-Sheet 2 Q m U" A m E A? u a? N INVENTORS til fizzy 2.1

Aug. 9, 1949. A? CQCOZELLA, JR, ETAL I SOLE COVER LASTING MACHINE Filed Nov. 25, 1945 I v I 3 Sheets-Sheet 3 I N VEN TORS formed on its surface.

connections. A leaf spring is mounted on a block [6 secured to the base It] and bears upon the rear side of the jack plate [2, tending at all times to rock the jack inwardly. The pressure of the leaf spring may be adjusted by means of an adjusting screw I! carried by a bracket l8 on the base and bearing upon the upper side of the spring The operative position of the jack may be adjusted and set by a stop screw [9 carried by the plate l2 and bearing on the base. The jack plate [2 carries a cylindrical casing having ball bearings in which is mounted a. goose-neck horn 2| carrying a circular work plate 22 at its upper end. This plate rotates freely and is mounted in the vertical axis of the horn and is thus maintained in its sole-supporting position in all positions of the horn.

The upright frame H at its right hand end is formed with vertical guideways between which is mounted a bearing block 24. In this block is journaled a normally horizontal shaft 25 arranged to be driven by a pulley 26 fast to its outer end. The overhanging frame extends forwardly and is provided at its outer end with a second pair of vertical guideways between which is mounted a block 28 having bearings for the forward end of the shaft. The block 28 is formed with an upwardly extending hooked projection 29 upon which bears the forward end of a leaf springsfl mounted in the upper portion of the machine frame. An adjusting screw 3| threaded into a plate in the frame serves to adjust the pressure of the spring upon the block.

The frame ll has a lower branch 32 to which is secured a bracket having a downwardly and rearwardly extending arm 33 and a flat forwardly projecting portion 34. An adjustable abutment screw 35 in the bracket determines the operative position of the block 28 and the shaft journaled therein. At its forward end the bracket 33-34 extends in proximity to the work plate 22' of the horn and carries a pair of gauge rolls 36. These are unsymmetrically arranged with respect to the shaft, that is to say, the effective guiding line of the two rolls is inclined forwardly with respect to the axis of the shaft, and the first roll encountered by the work is located nearer to the shaft 25 than is the other roll.

The block 28 in which the shaft is journaled carries'a stationary cam sleeve 31 having a single cam projection in its circumference. The shaft is shouldered at its outer end and carries a friction-tight feed roll 38 which 'is held upon the shaft between washers by a nut 39. Between the feed roll and the stationary cam sleeve 31 on the shaft is provided a longitudinally movable sleeve 40 having a pronounced helical thread The sleeve is connected to the shaft by means of a longitudinal key 4| and is formed at its rear end with a single cam projection which cooperates with the cam projection of the stationary sleeve 31 in throwing'the movable sleeve forwardly once in each revolution of the shaft. In practice we have found that a reciprocatory movement of A; to 1 inch is satisfactory for the rectilinear overwiping movement of the helical tool.

A lifting lever 42 is pivotally mounted between ears on the machine frame and engages at its forward end with a link 43 connected to the 'end of the shaft is lifted against the pressure of 'hand.

4 the spring 33 and separated temporarily from th work table of the horn to facilitate the introduction of work and its removal from the machine.

Secured to one side of the machine head is a forwardly inclined tubular guideway 44 in which is mounted a bar 45 curved'inwardly and forwardly at its upper end to a position approximately above the sleeve 31. This bar 45 carries 'an upwardly extending casing 45 for an electric heating unit, and a downwardly extending spoonshaped heater 4? arranged to run upon the inner surface of the binding strip, just before the strip comes into the range of the helical tool, for the purpose of heating and softening the cement carried by the binding strip. An angular lifting lever 48 pivotally mounted upon a stud 49 in the upper portion of the machine frame is connected through a slot in the guideway 44 to the heater bar 45 at its lower end and to the lifting lever 42 at its rear end. Accordingly, by'depressing the treadle connection to the main lifting lever 42, the bar 45 carrying the heater is moved upwardly and forwardly thus retracting the heater from the work. The action of the leaf spring 30 in the top of the machine frame which is transmitted to the main lifting lever is also transmitted to the heater bar 45 to maintain it yieldingly'at all times in its lower or operative position. The heater s1 is adjustably clamped in the upper end of the bar 55 and the operative position of the lower end of the heater is thus determined by this adjustment and by the abutment screw 35.

The machine is illustrated in Figs.- 1-4 as having both the feed wheel 38 and the helical tool 45 driven by the shaft 25, and while this arrangement is entirely satisfactory, we have found it somewhat more advantageous to operate the feed roll at a higher speed than the helical tool. A preferred construction for this kind of operation is illustrated in Fig. 5 where, instead of a single solid shaft, we employa hollow shaft 5i]. driven by a pulley 5i, and a solid shaft :52 concentrically disposed therein and driven by a pulley 53. The

solid shaft. carries the feed .roll 54 and the hollow shaft carries the helical tooldll splined thereto by a key 4! as before explained. By using this arrangement, and driving the pulleys 5| and 53,

speed ratio of the feed wheel to the helical tool in accordance with requirements of the work in In operation thehorn 21 is swun g outwardly by .its treadle connections, the feed roll and associated parts are lifted through the lever 42, and the partially formed shoe with its edge-attached cover strip fil is presented in working position. Thesole 60 is rigidly supported by the freely rotatable work plate 22 of the horn and its edge guided for feeding movement by the gauge rolls 36. When the lever 42 is released, the feed roll bears upon the upper surface of the inverted sole with strong spring pressure. The tool 40 extends transversely across the edge-of the sole andinto contact with the outer surface of the unattached portion of the binding strip 61. The

lower curved end of the heated member 41 extends into. proximity to the inner surface of the cover strip so that as the shoe is advanced, the cement carried by the strip is warmed and rendered tacky. v a

As the machine is operated, the helicaltool40 subjects the cover strip to a continuousrotary overwiping' action progressively in successive areas of the strip-as the shoe is advanced byithe action'o-f the feed rOll38'. 'Ih'e rotary-overwipin'g action is continuous and without interruption, and-once ineachrevolution the tool 40 is bodily projected forwardly bycamaction -'so thatthe area of the cover strip in contact -wtih the tool is given a rectilinear overwiping. The -two-over wiping actions supplement each other and wrap the cover strip tightly and smoothly about the marginal edge ofthe-sole-tfland press the tacky cementecoate'd margin of thestrip firmly against the uppermostbottom surface'of the sole so that it is fastened securel .by cernent in tensioned condition. It willbe understo'odthat the material :of the cover strip is soft enoughsothat it *conforms to or is grooved by the ihelicalthreads on the tool 46. Thus the rotary over-wiping action is effective 'to draw the'c'ove'r strip's't'rongly into the desired position. Thatool' is advanced bodily and positively in approximatelyof t'he sha ft rotation and is then releasedso --'-thatit is free to retract as it continues to rotate. Thisre- =tracting movement iscaused by the reaction of the helical threadagainst the work and-occurs without any tendency to displace the cover strip from its overlasted position.

While the machine of our invention has been herein shown and described in connection with a cover wrapping, or lasting, operation performed off the last, it will be understood that should the shoe manufacturer prefer to carry out this operation with a last in the shoe, it is necessary only to remove the horn. Under these circumstances a lasted shoe may be presented to the gauge rolls 36 and supported by the hands of the operator while the sole is advanced by the said roll and guided in the proper predetermined path by the gauge rolls.

Having thus disclosed our invention and described in detail an illustrative embodiment thereof, we claim as new and desire to secure by Letters Patent: J "l. A platform cover lasting machine comprising meansfor movably supporting a platform sole in inverted position, a helical tool disposed transversely across the marginal face of the supported sole, and mechanism for continuously rotating and intermittently reciprocating said tool while in contact with the platform cover.

2. A platform cover lasting machine comprising a rotatable and 'reciprocable wiping tool, and mechanism for continuously rotating and intermittently reciprocating said tool while in contact with the platform cover.

3. A machine for lasting the cover of a platform sole comprising a swivel horn for supporting the sole, a pair of edge gauge rolls for guiding the sole for movement upon the horn, a continuously rotating helical tool operating to draw the free margin of the cover over the upper face of the sole, means for intermittently reciprocating said tool While engaged with the cover, a heating device arranged to engage the inner surface of the cover in advance of the said tool, and spring means tending to hold the horn and tool in predetermined relation.

4. A machine for lasting platform covers, having in combination, means for guiding a platform sole with cover attached at one edge, a single tool for progressively working the free margin of the cover over the surface of the sole and pressing it into adhesive engagement therewith, said tool comprising a transversely disposed sleeve having a helical rib thereon, spring means for pressing 6 the sleeve toward the sole, and means for both rotating and reciprocating the, sleeve.

5. A machine forila'sting platform =covers,- :haV-- ing in combination, a sole gauge, a r'oll having =a helical- "rib and being YT disposed transversely to the margin of a shoe in-contact with said gauge, means for intermittently moving the roll inward- 1y to work the free portion-of the cover over the sole, and means for continuously driving the roli Withthe same efiect; 1

6. A machine for lasting platform covers, hav in-gin combination, a zgauge for 'an inverted sole, a driven roll disposed transversely :above :the sole :of the shoe positioned by the gauge-and having "a projecting helical rib means for continuously r0- tating-the roll in-a direction to screw the free edge ,-of the platform inwardly over the face 'of the Sole, and a cam for -intermittently thrcwing the roll inwardly without interrupting its rotation.

7.. A machine fo-r lasting-sole covers-having in combination, means for-"supporting and :guiding a'sole with an edge-attached cover strip,-aspring- :pressed roll bearing againstlthe sole" and having a helical-operating surface, means for driving the roll, and a cam shaped for positively advancing the roll in an axial direction to work the cover strip inwardly and then for releasing the roll whereby it may spin itself outwardly without disturbing the cover.

8. A machine for'lasting sole covers, having in combination, means for supporting and guiding a sole with an edge-attached cover strip, a shaft extending transversely of the sole, a helical tool carried thereby in position to engage the cover strip, and a feed wheel carried thereby in position to engage the sole within its margin-a1 edge and being rotatable about the axis of said helical tool.

9. A machine for lasting sole covers, havin in combination, means for supporting and guiding a sole with an edge-attached cover, a shaft, a roll splined thereon and having a helical wiping surface, means for rotating the shaft with the said roll, and cam means for intermittently pushing the roll inwardly over the sole once in each revolution of the shaft.

10. A machine for lasting sole covers, having in combination, means for supporting and guiding in a horizontal path a sole with an edge-attached cover, a horizontal shaft carrying a rotary wiping tool and extending over the surface of the sole, a rocking journal for said shaft mounted to permit the shaft to swing toward and from the sole, spring means for pressing the shaft toward the sole, and an element for heating the cover movable simultaneously with the movement of the shaft.

11. A machine for lasting sole covers, having in combination, means for supporting and guiding in a horizontal path a sole with an edge-attached cover coated with heat-responsive cement, a rotary wiping tool acting on the cover to work it over the sole, and a retractable heated member mounted to engage the cover strip as it approaches the said wiping tool and acting to render tacky the cement coating of the strip.

12. A machine for lasting sole covers, comprising means for supporting and guiding in a horizontal path a sole carrying an edge-attached cover strip, a helical tool extending transversely across the face of the sole, means for rotating the tool to subject the cover strip to a continuous rotary overwiping, means for bodily projecting the tool once in each revolution thereof to subject the cover strip to rectilinear overwiping, and means for feeding the sole.