Abstract: A method for manufacturing a shoe, which includes the steps of:arranging an upper-insole assembly about a last;coupling an intermediate member comprising a toe portion and a heel portion to a lower region of the upper-insole assembly arranged about the last; andarranging the intermediate member in a mold and introducing plastic material into the mold so as to form an injected plastic material member which surrounds the intermediate member and which is integrally connected with both the intermediate member and the upper-insole assembly.
Abstract: A moisture-curable polyurethane hotmelt adhesive composition having high green peel strength and good creep resistance is formed from a polyester, low molecular weight polypropylene glycol and a diisocyanate, and optionally a tackifier. A method of bonding a sole to a shoe upper using the adhesive composition is also described.
Abstract: A process for attaching a shoe upper to a sole by employing staples includes forming apertures near the edge of the sole so that ends of the upper can be inserted into the apertures and attached to the sole by way of staples after the edge of the sole has been displaced. The edges of the sole are preferably adhered to the staples so that the staples remain hidden behind the edges that form the periphery of the shoe sole.
Abstract: A shoe including a flexible shoe upper having areas adjacent cutouts at opposing sides thereof which include points corresponding to the metatarsal tibiale and fibulare of a human foot, which adjacent areas are secured by stitching to areas of a socklining adjacent cutouts on opposing sides thereof. The cutouts on the shoe upper, before being stitched, are longer than the cutouts of the socklining. The shoe may be prepared by stitching those cutout adjacent areas on opposing sides of the shoe upper to those cutout adjacent areas on opposing sides of the socklining, followed by adhesively bonding the remainder of the peripheral areas of the shoe upper and the socklining, and attachment of an outsole thereto.
Abstract: A method for construction of footwear includes providing an upper defining a volume for receiving a wearer's foot, the upper having a rearward portion with a peripheral lasting edge; providing an outsole having a forward portion, a rearward portion, a walking surface, and a opposed surface opposite to the walking surface, and a cavity formed in at least the forward portion of the opposed surface of the outsole; the method further includes providing and securing resilient material within the cavity of the outsole, and sewing along a peripheral portion of the outsole, the forward portion of the outsole only to the upper. The sewing step includes stitching a thread through the peripheral portion of the opposed surface of the outsole to the walking surface of the outsole. The peripheral lasting edge portion of the upper is lasted along an edge of a last over an insole tuck temporarily secured to the last, and the rearward portion only of the outsole is secured to the lasted rearward portion of the upper.
Abstract: A process for attaching a shoe upper to a sole includes the steps of forming clasps having inner and outer staples, folding the clasps around the ends or edge of the upper so that the inner staples attach the clasps to the upper, and inserting clasped portions of the upper into corresponding apertures formed in the sole so that the outer staples attach the upper to the sole.
Abstract: A molded shoe assembly having an outer sole with a heat activatable adhesive coated on one surface and absorbed in the sole surface and a release liner above the adhesive surface. The adhesvie will reactivate at a temperature of between 115 and 125 degrees F.
June 19, 1998
Date of Patent:
November 16, 1999
Worthen Industries, Inc.
Barbara A. Strickland, James H. Kerouack, Vitale Brinzow
Abstract: A shoe includes an upper with a lower edge, a sole with at least one transverse passageway and a peripheral slit, and a first string placed along the lower edge of the upper over the slit of the sole and stretched through at least one of the passageways in order to attach the upper to the sole while providing an attractive finish to the shoe. A second string can be inserted through another passageway to eliminate gaps between the first string and curved portions of the sole to further improve the fit and finish of the shoe.
Abstract: In a safety shoe provided with a toecap, a vamp, an insole, and a two-layer structure sole, the a two-layer structure sole includes an outsole part comprising a high hardness rubber material and a midsole part, laminated in the above outsole part, comprising a low hardness sponge rubber material and has a heel part. The outsole part is fused integrally with the midsole part by vulcanization molding, and the upper circumferential edge of the outsole part is fused integrally with the lower circumferential edge of the vamp by the vulcanization molding described above. Since the outsole part in a side in contact with the ground has a high physical strength and is excellent in an oil resistance, a chemical resistance and a heat resistance, and the midsole part in an inner side has a cushioning property, the shoe is less liable to bring about fatigue even after wearing it for a long period of time.
Abstract: A method of making a sports boot having an upper and a flexible material, an outsole and an insole. The insole having a heel region and forwardly projected portion having an outer edge profile which is stepped inwardly. The lower edges of the upper are folded inwardly and stitched to the inwardly stepped edge profile of the forwardly projecting portion of the insole forming a coplanar assembly of the insole and facing edges, stitching the facing edges to form a boot sub-assembly, applying the boot assembly to a last, folding and securing the lower edges of the upper to the heel region of the insole and securing the outsole to the sub-assembly to complete the formation of the boot.
Abstract: A shoe structure includes an upper, including at least an outer layer and a lining, an insole, and a sole. The lining lines the inside of the outer layer and includes a waterproof and water-vapor permeable functional layer. The insole is connected to a lower end area of the outer layer. The lower end area of the lining is turned back to the inside in the sole area at least approximately parallel to the direction in which the sole extends, whereby the turned back area of the lining is shortened to a width of between 0.5 and 3 cm. Cut-outs are made in the insole, at least in the area in which the turned back lower end area of the lining ends. The lower end area of the lining is embedded in a synthetic material which fills the cut-outs in the insole in such a manner that at least the surface of the end area of the lining facing the inner area of the shoe structure forms a continuous surface with the surface of the synthetic material facing the inner area of the shoe structure.
Abstract: The invention relates in part to a method of constructing a lasting board with contiguous attachment points. A flexible shoe lasting board is formed with extensions beyond the feather edge of the last. The extensions are coextensively formed with the lasting board since they are cut as a single unit from one sheet of material. This method of construction provides greater integrity of the joint between board and extensions than would be present if attachment was required, such as by stitching or cementing. The extensions of the lasting board are useful for securing the shoe to the foot and for securing components to the lasting board.
Abstract: A boot and a process for assembling the boot, the boot including a flexible upper and a rigid sole. The process includes the assembling of the flexible upper and the rigid sole with the use of an intermediate portion, the intermediate portion obtained by shaping a flexible material. At least two steps of the process includes at least the following: covering a portion of the sole with the intermediate portion to form a junction surface and applying a pressure on the outside of the boot to tighten the intermediate portion against the sole at the level of the junction surface.
Abstract: A method for construction of footwear includes providing an upper defining a volume for receiving a wearer's foot, the upper having a rearward portion with a peripheral lasting edge; providing an outsole having a forward portion, a rearward portion and a cavity formed in at least the forward portion of a top surface of the outsole; providing and securing resilient material within the cavity of the outsole; sewing, the forward portion only of the outsole to the upper along a peripheral edge portion of the outsole; lasting, along an edge of a last, the peripheral lasting edge portion of the upper over an insole tuck temporarily secured to the last; and securing the rearward portion only of the outsole to the lasted rearward portion of the upper. This dual-approach construction method combines the advantages of increased comfort at the front portion of the wearer's foot with attractiveness and good support at the rearward portion of a shoe.
Abstract: A method of making a boot having an upper, a lower and a sole is disclosed. The method includes the step of connecting the lower to the sole in a water-tight relationship only after the lower is connected to the upper.
Abstract: A method for forming a composite sole to an upper of a shoe includes molding a blank midsole to an upper of a shoe while protecting the material of the upper from the heat involved in molding the midsole to the upper, and subsequently adhering an outsole having a desired traction surface to the blank midsole. The method requires less heat and less time than prior art vulcanization processes that form entire soles to footwear uppers, and also requires less equipment than prior art processes.
Abstract: A waterproof foot covering such as a shoe, boot or the like has a molded-on (foamed-on) outersole and an upper that is lined with a waterproof but water vapor-permeable layer. The lower welt region of the upper is connected to the lower welt region of the waterproof layer and to the outer welt region of the inner sole via an upper band, a lower band, and a multiplicity of tensile-load-resistant straps connecting the upper and lower bands to one another. The lower welt region of the upper is stitched to the upper band. The lower welt region of the waterproof layer and the outer welt region of the inner sole are stitched to the lower band. The straps and the lower band are embedded in the material forming the outersole. This material is connected, in this embedding region, to the waterproof layer in a waterproof manner by molding-on (foaming-on).
Abstract: A waterproof shoe gasket insole strip comprising a stiff textile material gasket sheet coated with a selected thermoplastic polymer. The insole gasket is located between the insole and the outer sole. Due to its stiff, but flexible nature, it is easy to apply during lasting procedures.
Abstract: A novel method of footwear construction. A specially designed outer sole with a lip is used. It insures accurate positioning between upper and shoe linings. After the upper is complete, a sock lining is attached to a leather lining by stitching the edges of the linings to the edge of the insole. The insole is made of soft leather or soft flexible fabric. The next step is uniting the linings with the upper. Then, the upper of the shoe is assembled onto the last by inserting the last into the upper which now is completely closed by the linings only. Only the lower edge of the upper (about 1 inch) is floating loose. The fourth step is to cement the sock lining, which is attached to the upper via the vamp and quarter linings, to the specially designed sole. With the last in place, the fifth step is to cement the lower edge of the upper that was left free to the recessed lip of the sole. After this attachment has been completed, the shoe assembly is dropped into a pressure device to further set the cement bonds.
Abstract: Footwear having a pair of slipper or footwear/shoe members joined together. Each member is formed of a flexible upper body and a sole secured thereto about the perimeter. The two slipper or footwear/shoe members are further joined with their soles abutting each other.
Abstract: For drying coatings of solvent-based adhesive applied to shoe bottoms a through-flow drying apparatus is provided which utilises air at ambient temperature for the constant rate period (i.e. the period during which the surface of the coating is "wet"), and thereafter applies infra-red heating during the falling rate period (i.e. the period when migration of the solvent through the solid adhesive is to be achieved). In the first stage, jets of air are directed against the shoe bottom at a velocity of not less than 15 meters/second (measured at the inlets (38)), while at the heating station a plate heater (42) of a size which is larger than the area of the shoe bottom is provided. Ideally, when the shoe is removed from the apparatus, an outsole having a reactivated coating of adhesive can be located with the shoe bottom and bonded thereto, without reactivation of the shoe bottom adhesive itself.
Abstract: A shoe with a waterproof lining (16) comprises a shaft (12) connected to a marginal strip (12b) made of a material which does not conduct water. The marginal strip (12b) is attached to the insole (10). A seal (24) is arranged between the marginal strip (12b) and the lining (16). The sole structure (14) is not attached to the marginal strip (12b). The seal (24) is made of a sealing material which is introduced between the marginal strip (12b) and the waterproof lining (16) independently of the sole structure (14).
May 22, 1991
Date of Patent:
February 15, 1994
LOWA-Schuhfabrik Lorenz Wagner GmbH & Co. KG
Abstract: A mold for making a sandal having an injected molded sole comprises a last for receiving an upper, a ring, and a sole plate. The last, ring and sole plate form a sealed cavity where the sole is formed in response to plastic material being injected into the sealed cavity. The injected plastic material has tendencies to (1) adhere to portions of the upper on a portion of the last forming a wall of the sealed cavity and (2) remain in the cavity as the last is removed from the cavity. The portion of the last forming the sealed cavity wall includes an ear extending into the cavity for overcoming the tendency of the injected plastic material to remain in the cavity. The ear frictionally engages an interior surface of the sole to pull the sole from the cavity as the last is being removed from the cavity.
Abstract: Process for producing shoe soles of injected plastics material, which soles have an empty chamber visible through a transparent material, which process comprises the following steps:a) injection, into a hollow region comprised between a mobile die and a first removable plate, of a multipart tread sole, with at least one of said sole parts being made from a transparent material;b) injection, into a region comprised between said first removable matrix and a second, removable matrix, of a shaped body comprising a perimetrical wall 13 and a top wall 14;c) removal of said first matrix and injection, into the hollow region comprised between said tread sole and said shaped body, of a layer 17 made of a material suitable for bonding the shoe sole and said shaped body to each other;d) removal of said second matrix and injection, into the hollow region comprised between the vamp, the tread sole and the external side of said shaped body, of a material which constitutes the intersole;e) possible either partial or total f
Abstract: This invention relates to new, substantially linear polyester polyurethanes containing hydroxyl end groups, based on selected starting materials, and their use as adhesives or for the production of adhesives.
November 23, 1988
Date of Patent:
August 7, 1990
Walter Meckel, Horst Muller-Albrecht, Manfred Dollhausen
Abstract: Method of bonding a sole to a shoe by applying moisture-curable melt adhesive to the shoe upper, subjecting the adhesive coating to a hot-cure step with airborne moisture, and pressing the sole and shoe upper together with the adhesive between them immediately after the hot-cure step, preferably in less than 90 seconds after leaving the hot-cure. The bond is effected without application of adhesive to the sole, which is merely pre-treated by wiping with solvent or primer solution.
March 4, 1988
Date of Patent:
July 11, 1989
Emhart Industries, Inc.
Raymond Hanson, Christopher M. Allen, Karl-Heinz Albert, Hubertus von Voithenberg
Abstract: The process firstly involves the making of a sole and a vamp. The sole is composed of two elements, respectively upper and lower, that can be joined together as a perfect fit. The vamp, includes a rear area, a toe cap and of other completing parts. Subsequently the vamp is superimposed upon the upper sole element and sewn to the latter. Then the upper and lower sole elements are joined together by gluing. Finally the vamp is folded upwards and the rear area, the toe cap and the completing parts are sewn to it.
Abstract: A method for the production of footwear is disclosed which comprises providing and attaching a midsole member with integrated toe and heel counters. The process provides for efficient use of labor and machinery by reducing the number of steps required in footwear production and by reducing the number of machines required. The method comprises placing the midsole over a liner, drawing a pre-formed upper over the midsole and attaching a sole to the upper. Attachment of the components is preferably by a heat-activated glue. The midsole component is adaptable to a number of applications by modifying such aspects as the size and shape of the toe and heel counters, the size, shape and/or presence of side walls, the contour and thickness of the bottom, and the attachment of shanks or other stiffening or resiliency modifying members.
Abstract: A method of working leather, in which a deposit of material adhering to the leather is made on the surface of the leather to enable a leather footwear upper treated in this way to adhere to a sole without being carded or sanded, either by direct injection of sole-constituting material, or else by bonding on or by gluing on a prefabricated sole, and/or to enable the leather to be worked by a high frequency current.
July 12, 1985
Date of Patent:
November 10, 1987
Jacques Pouget, Vincent Lipovac, Yves de Mauduit
Abstract: A California-type shoe having an upper with a folded-over edge, a sock-lining and a sole having a stitching edge. The folded-over edge captures the sock-lining to form a three-layer seam, which seam is sewn directly to the stitching edge of the sole.
Abstract: A method of manufacturing a shoe (10) includes joining a toe bottom sock portion (54) on a join line (56) to a toe portion (46) of an upper (12) to form a shoe sock (57). The join line (56) is near toe portion bottom margin (60) and the front perimeter of sock portion (54), and extends from a first side (50) of shoe (10) around the front (51) to a second side (52). A sole (30) is joined to the shoe sock (57) to complete the shoe (10).
Abstract: In a method for producing footwear, wherein the shaft and the shell sole of the footwear are glued together, the leather upper part of the footwear is first cut to size without the formation of a lasting fold, it is prepared and then roughened along a lower border thereof. After shaping of the tip, so as to conform to the last, the preformed shaft is stretched to measure, and a rear cap is simultaneously molded in. The shell sole, which is likewise glued, is placed on a glued border and pressed against at least the tip and heel and is also possibly sewn with a seam, after which a cover sole is placed and the shoe or footwear is completed.
Abstract: A shoe of the high-upper type is formed by two slippers of leather or like material and of different size. One slipper is engaged within the other, a metal former is placed within the inner slipper, and the assembly is placed within a mold comprising two halves and a bottom mold block corresponding to the outsole and provided with an injection sprue. The plastic injected through the sprue passes through an injection orifice in the bottom slipper sole, spreads within the internal space between the two slipper soles so as to form the insole, then passes downwards through holes located in uniformly spaced relation in the bottom slipper sole and spreads between the bottom sole and the mold block so as to form the outsole which is thus intimately bonded to the insole. At the same time, the injected plastic flows upwards within the internal space between the two slippers so as to form the upper of the shoe.
Abstract: A fabric slipper upper is stitched on a stitching machine along the inner surface of a peripheral flange of an outsole by the provision of an upper feed only and a nosepiece having a blunted end and smooth sides and ends but with no lower feed.
Abstract: A method of making an article of footwear includes attaching a connecting strip to forward and rearward portions of the upper on the uppers medial and lateral sides. A sole is provided having recesses adjacent the medial and lateral sides. The footwear is assembled by movement of the connecting strips in a direction perpendicular to their length and into the sole recesses. The connecting strips may alternatively contain recesses so that the connection between the upper and the strips renders the components flush.
Abstract: A two-layer sole is molded onto the bottom of a lasted upper by molding a first color outer sole with a recess in the top thereof, molding a second color inner sole to fill the recess. The inner sole including a flange which covers the outer sole and extends slightly outwardly from the periphery thereof between the outer sole and the upper, coloring the flange a third color, and removing a portion of the flange so that the resulting sole appears to include an outer layer, a midsole and a separate welt.
Abstract: An apparatus and method for applying an adhesive coated wear portion to the underside of a shoe wherein the wear portion and the underside of the shoe are heated, a first pressure is applied to urge the wear portion and the shoe together, and a second greater pressure is applied in situ to further urge the wear portion and the underside of the shoe together. In one embodiment, a heating element may be provided for transfer between a first location for heating and drying a shoe and a second location directly between the shoe and the wear portion to be applied. The periphery of the wear portion may be trimmed to correspond to the underside of the shoe.
Abstract: The invention relates to a process and tooling for producing a shoe of open top form having for example two parts of an upper (secured together by means of a buckle or other arrangement) are anchored by pegs within one part of a mould defining the bearing surface for the foot against the bottom of the shoe; the other part of the mould being shaped in such a manner as to define the periphery and the base of the shoe bottom the edges of the mould acting in conjunction to define the upper edge of the bottom of the shoe and to form clefts through which each of the two parts of the upper pass, filling of the mould with mouldable material resulting in the upper components being secured in the bottom of the shoe.
Abstract: An arrangement for molding a flat insole (412) and adhesively attaching the molded insole to the bottom of a last (414) comprising an upper mold (62) and a lower mold (14) having complementary molding surfaces that are initially spaced from each other so that the flat insole is transported between the molding surfaces and are then closed upon the insole to mold the flat insole to the shape of the molding surfaces. The upper mold is then raised while the molded insole is retained on the upper mold molding surface after which the insole is released from the upper mold molding surface and descends onto the bottom of the last. The molded insole is then pressed onto the last bottom by an applicator (378) and is attached to the last bottom by an adhesive patch (421) on the last bottom that was previously applied to the last bottom by the applicator.
Abstract: An improved slipper sock which conforms to the foot of the wearer is formed as follows: the bottom of the foot portion of a stetchable knitted sock, which is in a stretched condition on a foot form, has temporarily attached to the exposed side thereof a thin and flexible bottom sole by use of dots of adhesive located at the extremities of the heel and toe portions thereof, the knitted sock is then removed from the foot form, and the periphery of the bottom sole is then stitched to the stretched bottom of the foot portion of the knitted sock, this stitching concurrently creating a taper in the thickness of the periphery of the bottom sole.
Abstract: Process and apparatus for applying adhesive to a surface and for bonding and particularly for attaching a tread member to a shoe in which an adhesive applicator including a jet providing a gas stream having a rotational component is constructed to extrude viscous fluid adhesive to form a filament and to lay down the filament while still soft and adhesive as a band of overlapping loops directly on the attaching surface of an element to be adhered. The elements to be joined are pressed together with the adhesive between them and the adhesive is hardened.