US3032791A

US3032791A - Wiping in device for shoe uppers

Info

Publication number: US3032791A
Application number: US44793A
Authority: US
Inventors: Vlcek Jaromir; Arnost Lumir
Original assignee: ZD Y PRESNEHO STROJIRENSTNI
Current assignee: ZAVODY PRESNEHO STROJIRENSTNI; ZD Y PRESNEHO STROJIRENSTNI
Priority date: 1959-07-31
Filing date: 1960-07-22
Publication date: 1962-05-08
Anticipated expiration: 1979-05-08

Description

May 8, 1962 Filed July 22. 1960 J. VLCVEK ETAL 3,032 791 WIPING IN DEVICE FOR SHOE UPPERS 2 Sheets-Sheet 1 l l l I l l 11 INVENTORS.

BY Lamzr Arnasz y 1962 J. VLCMEK ETAL 3,032 791 WIPING IN DEVICE FORSHOE UPPERS Filed July 22, 1960 2 Sheets-Sheet 2 INVENTORS.

United tates The present invention relates to a device for wiping in a folded shoe upper which has been lasted and clamped by a profiled mould member along the periphery of the last.

The heretofore known wiping devices comprise individual wiping members which are separately controlled and actuated by an intricate drivingmechanism. The laying or adjusting of the folded upper, in particular in the toe portion, is rather difiicult with such conventional wiping devices and in addition thereto the edges of the insole are often creased along their circumference when the wiping device engages the edge of the last. Insofar as one-piece wiping members are used, they cannot be employed for unsymmetrical shapes, in particular for childrens footwear.

The present invention aims at removing the aforesaid drawbacks. According to the invention a system of resilient wiping members is provided, to which common movement is imparted from a circular segment by means of inclined slots arranged therein.

An exemplary embodiment of the device incorporating the invention is shown in the accompanying drawing, wherein:

FIG. 1 shows the device in plan view, a part of the covering plate being taken off for the sake of a better understanding,

FIG. 2 is a section along the line 22 in FIG. 1,

FIG. 3 is a sectional view taken along the line 33 in FIG. 1 and FIG. 4 is a sectional view taken along the line 4-4 in FIG. 3.

The device according to the invention comprises substantially a supporting bracket 1 provided in its upper part with a recess 2 covered by a plate 27. A circular segment shaped disc 3 is rotatably inserted in the recess 2, elongated slots 4 being arranged in said disc and obliquely inclined relative to corresponding radii of the disc. In the lower part of the bracket 1 radial grooves 5 are provided about the axis of rotation of the disc 3 at uniform distances from each other in a fan-like manner, slides 6 being mounted for movement in said grooves and secured by plates 7 against falling out of the grooves 5. Each slide 6 is equipped with a pin 8 and a roller 9 adapted to travel in a respective slot 4 of the circular segment disc 3.

An elongated carrier member 11 is mounted for a rocking movement on a pin it} and extends radially inwardly and outwardly from this pin. The outwardly extending rear portion 12 of the carrier member 11 is tapered so that its free end is normally spaced from the slide 6 to permit the rocking movement of the carrier member. A helical compression spring 13 urges the rear portion 12 away from the slide 6.

The front portion of the carrier member 11 forms a rounded nose 14 which abuts against a wedge shaped stop 15 when the carrier member moves radially inward as seen in FIG. 3. The abutting face of the stop 15 is downwardly obliquely inclined relative to the direction of the carrier member movement so that the front portion of the carrier member is deflected downward, as viewed in FIGS. 2 and 3, against the restraint of the spring 13 by the abutting engagement of the nose 14 with the stop 15. The stop 15 is mounted on the plate 27 by means of a screw 16 and extends into the radially innermost portion of the atent O 3,932,791 Patented May 8, 1962 groove 5. The screw 16 engages a radially elongated slot 28 in the plate 27, so that the radial position of the stop 15 is adjustable.

An elongated wiping member 18 of resilient plate material is secured to the underside of each carrier member 11 by two screws 17. The front portion of each wiping member extends toward the axis of rotation of the disc 3 beyond the nose 14 of the corresponding carrier member 11 into an open space 29 about the axis of rotation of the disc 3. The front portion opposite the axis forms a leading edge which extends into a lateral projection 19. The leading edge of each wiper member is obliquely transverse to a radius of the disc 3 in such a manner that the respective projection 19 is closer to the axis of rotation of the disc than the remainder of the leading edge.

The outer circumference of the disc 3 carries a gear rim 24) which meshingly engages a rack 21 longitudinally slidable on the bracket 1.

A former member 22 is resiliently mounted on the plate 27 and projects downwardly therefrom into the open space 29 to a level above the common plane of movement of the wiping members 18. The former member 22 has an edge which conforms to the perimeter of an insole which is to be secured to shoe uppers by the device of the invention. During movement toward the axis of the disc 3, the front edges of the wiping members 18 move through a position of axial alignment with the edge of the former member 22. V The drawing also shows elements of a lasted shoe upper 25 which is secured on a last 24 by means of a mold member 26. The sole portion of the last 24 carries an insole 23.

The afore-described device operates asfollows:

.The shoe upper 25 which has been lasted in a known Way and fixed by means of the mold member 26 along the periphery of the last 24, is placed in the space 29 between the wiping members 18 axially opposite the former member 22 and is secured in this position. An insole 23 is positioned on the flat upwardly facing sole portion of the last. At least one of the corresponding face portions of the insole and of the upper which will be secured to each other by the wiping-in process is coated with adhesive in the usual manner. Upon a given impulse a not-illustrated motor displaces the rack 21, which due to its engagement with the gear rim 20 turns the circular segment 3. The rollers 9, which roll along the inclined slots 4 in the circular segment 3-, are displaced towards the axis of the disc 3, pushing out the slides 6 in the same direction and together with them the wiping members 18.

The wiping members 18 are shown in FIG. 2 in their outwardly retracted position. When they are moved radially inward toward the position illustrated in FIG. 3, their leading edges engage the rim of the shoe upper, which up to now has assumed a position perpendicular to the insole, and start folding it over the edge of the last 24. Since the former member 22 is placed at a certain distance above the insole 2'3, the rim portion of the shoe upper is initially in frictional engagement with the former member 22 so that a uniform distribution of folds in the bent rim of the shoe upper is attained. The wiping members 18, which on reaching the rim of the shoe extend in a common plane slightly above the edge of the last, are in their final movement axially deflected towards the last 2'4 due to the nose 14- striking the stop 15 and are consequently resiliently pressed against the folds in the shoe upper. This completes the wiping in of the upper.

It is an advantage of the invention that the drive of the wiping member is very simple. The radial engagement of the wiping members with the rim of the shoe upper at the beginning of the wiping-in process and the full pressure of the wiping members brought to bear on the upper 25 in an axial direction at the end of the travel of the Wiping members is advantageous as the adhesive is not squeezed out and driven ahead of the wiping members, but is rather pressed into two connected pieces of material simultaneously along the entire interface. Moreover, due to the resiliency of the wiping members any danger of creasing the rims of the insole is eliminated and the use of a soft insole made possible. Finally, the arrangement and shape of the wiping members and in particular the fact that their leading edge is extended to form a lateral projection, permits each projection during radially inward movement of the corresponding wiping member to overlap the leading edge of the adjacent member. This eliminates the danger of clamping the material of the upper rim between two wiping members, ensuring at the same time a regular and uniform formation of folds in the rim of the shoe upper.

We claim: 1. A device for wiping in the lasted uppers of a shoe comprising, in combination, (a) a support; (b) segment means mounted on said support; (c) means for actuating rotary movement of said segment means about an axis on said support; a plurality of wiping members circumferentially spaced about said axis; and (e) motion transmitting means engaging said segment means and said wiping members for jointly moving said wiping members in respective directions toward. and away from said axis in a substantially common plane transverse of said axis when said segment means rotates. 2. A device as set forth in claim 1, wherein each of said wiper members has a front portion facing said axis and further comprising abutment means for axially defleeting said front portion from said common plane when said wiping members jointly move toward said axis.

3. A device as set forth in claim 2, wherein said wiping members are of resilient material.

4. A device as set forth in claim 2, wherein said motion transmitting means include a plurality of carrier members pivotable about respective axes transverse of said directions, said wiping members being respectively mounted on said carrier members for joint movement therewith in said directions, and said carrier members engaging said abutment means when the respective wiping members move toward said axis.

5. A device as set forth in claim 1, wherein each of said wiping members has a front portion facing said axis in the direction of movement of said wiping member, said front portion having a leading edge elongated obliquely transversely of said direction whereby a portion of said leading edge is nearer said axis than the remainder of said edge.

6. A device as set forth in claim 1, wherein each of said wiping members has a front portion facing said axis, and further comprising a former member having an edge portion extending in a plane spacedly adjacent said common plane and axially alignable with said front portion during movement of said wiping members toward and away from said axis.

7. A device as claimed in claim 6, wherein the former member is resiliently mounted.

8. A device as set forth in claim 1, wherein said motion transmitting means include a guide member secured to each of said wiping members for joint movement therewith in said directions, said segment means being formed with a plurality of slots respectively elongated obliquely transversely of said directions; each of said guide members engaging a corresponding one of said slots.

References Cited in the file of this patent UNITED STATES PATENTS 391,788 Goodhue Oct. 30, 1888 511,906 OBalger Jan. 2, 1894 2,955,302 Schoenmakers Oct. 11, 1960