US3845576A - Protective device for safety shoes - Google Patents
Protective device for safety shoes Download PDFInfo
- Publication number
- US3845576A US3845576A US00434267A US43426774A US3845576A US 3845576 A US3845576 A US 3845576A US 00434267 A US00434267 A US 00434267A US 43426774 A US43426774 A US 43426774A US 3845576 A US3845576 A US 3845576A
- Authority
- US
- United States
- Prior art keywords
- sole
- protecting
- toe
- protecting portion
- arch
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 230000001681 protective effect Effects 0.000 title claims abstract description 50
- 239000000463 material Substances 0.000 claims description 51
- 239000010410 layer Substances 0.000 claims description 15
- 239000002356 single layer Substances 0.000 claims description 7
- 239000004033 plastic Substances 0.000 claims description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 238000003780 insertion Methods 0.000 claims description 2
- 230000037431 insertion Effects 0.000 claims description 2
- 238000003466 welding Methods 0.000 description 8
- 210000002683 foot Anatomy 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 7
- 210000003371 toe Anatomy 0.000 description 6
- 238000010276 construction Methods 0.000 description 5
- 238000005304 joining Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 210000001872 metatarsal bone Anatomy 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 241001622623 Coeliadinae Species 0.000 description 1
- 208000017899 Foot injury Diseases 0.000 description 1
- 241000272534 Struthio camelus Species 0.000 description 1
- 240000003834 Triticum spelta Species 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- -1 but not limited to Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000009958 sewing Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B7/00—Footwear with health or hygienic arrangements
- A43B7/32—Footwear with health or hygienic arrangements with shock-absorbing means
Definitions
- Fie'ld 72 B 72 C comprises a unitary sole-protecting portion and a toe- 3 7 R 5 7 protecting portion secured along at least one side of the sole-protecting portion, and adapted to be formed [56] References Cited into one or multiple layers of an open-ended arch as a toe-protecting portion.
- Safety-type footwear of the protective type is often employed to protect the foot of the wearer from crushing weights or penetration of the footwear by sharp objects, such as nails.
- Protective footwear although customarily worn by policemen, firemen, miners, construction workers or others working in industry, may also be usefully employed to prevent or minimize foot injuries to children or others.
- Protective footwear may be designed to protect the toes of the wearer, the meta tarsal arch, the sole of the wearer and combinations thereof.
- Protective footwear is typically fabricated by inserting in the footwear a protective device which has been formed by stamping a sheet material, such as stamping sheet steel in a die press, to blank out flat material, and, thereafter, forming theblank into the protective device to be inserted into the footwear.
- the blank so prepared is of uniform thickness, the thickness of the material governed by the extent of protection desired.
- the sheet material thickness is often limited by the need of the wearer of the protective footwear, such as, for example, the requirement of the wearer to flex the sole of the shoe where sole-protective devices are used, and the bulkiness of any protecting arch designed to protect the toe or metatarsal arch of the foot.
- a protective element for safety shoes which provides an open toe protective arch open at the front or rear and a soleprotecting portion designed to underlie the sole of the wearer of the footwear is described in US. Pat. No. 3,410,007, patented Nov. l2,- l968, which is incorporated by reference herein.
- My invention relates to a protective device for footwear and to a method of manufacturing the same
- the soleprotecting portion together with the arch-protecting portion, provides additional safety to the wearer, and has advantages in providing flexibility in the amount of protection and the ease of manufacture thereof.
- My protective device provides many advantages in protection, manufacture and use. For example, the use of a unitary sole-protecting portion in'my device provides for theadvantage of greater strength in the unitary material, while it avoids the time and difficulty associated with the welding or joining composite sheet material together along a seam line in the soleprotecting portion as in the Peterson patent. The elimination of a seam line in the sole-protecting portion not only provides the greater strength, but avoids any discomfort to the wearer from a seam therein, such as a welding bead, or the improper joining of such composite materials together. Furthermore, my protective device permits the open arch-forming portion to be formed in a simple and efficient manner from an integeral blank material, and in certain embodiments described permits enhanced strength of the arch-forming portion from an integral uniform thickness blank material.
- the use of only one adjoining edge minimizes the possibility of failure of the device when the arch-protecting portion is struck by a crushing blow.
- only one edge of each arch-protecting portion needs be joined to the opposite edge which is integrally joined to the soleprotecting portion.
- the multiple two or three arch-protecting portions in my blank material permit an overlapping and strong multiple layer effect in the open-arch portion.
- a single material may be employed where minimal protection is desired, such as in children's shoes, or a multiple layer effect used where enhanced protection is desired, such as in heavy industrial-type safety footwear.
- sole protecting portion as used herein, it is meant theprotection of all or any part of the sole of the foot of the wearer in which my protective device is to be inserted and used.
- the sole-protecting portion of my device may then only cover a selected portion of the sole' of the shoe, such as a portion extending less than'the instep, so that flexibility of the wearers sole is maintained.
- the soleprotecting portion only partially protects the entire sole, then it may be composed of a thicker material to provide additional protection if desired in comparison to a sole-protecting portion which extends to cover all or substantially all of the sole, wherein thinner material must be used to maintain sole flexibility for the user.
- toe-protecting portion as used herein, it is meant the protection of the toes or the matatarsal arch, or both, of the foot of the wearer in which the protective device is to be inserted and used.
- the archprotecting portion is open at the front and rear end blank material or multiple, adjacent, overlapping layers of the blank material where enhanced protection is desired of the arch-protecting portion, but thinner material in a single layer is required for flexibility in the soleprotecting portion.
- FIG. 1 is a representation of a blank formed of a bendable sheet material which may, in one embodiment, be formed into my protective device.
- FIG. 2 is a cross-sectional view of the blank of FIG. 1 along the line of 2-2 of FIG. 1 when formed into a protective device of my invention.
- FIG. 3 is another embodiment of a blank which may be formed into a protective device of my invention having a multiple layer toe-protecting portion.
- FIG. 4 is a cross-sectional view along the line 44 of FIG. 1 showing the blank as formed into a protective device.
- FIG. 5 is a blank of another embodiment of my invention.
- FIG. 6 is a top elevation view of the blank of FIG. 5 as formed into a protective device of my invention.
- FIG. 7 is a blank of another embodiment of my invention which combines the structural features of the preceding embodiments.
- FIG. 8 is a cross-sectional view along the line 88 of FIG. 7 showing a multiple layer construction into a pro tective device of the blank of FIG. 7.
- FIGS. 1 and 2 illustrate one embodiment wherein a flat stamped sheet material 10, such as of 0.010 springtempered stainless steel, is formed comprising a soleprotecting element I2 which extends in this illustration to cover only a portion of the sole of the wearer; for example, extended as show-n to just before the instep of the wearer, and an open arch toe-protecting element 14.
- the arch element 14 is integral with the sole 12, but is formable, such as by bending, along the foot contour line 16 of the blank, while the opposite free edge of the arch 14 is represented by an outer foot-contoured edge 18 adapted to be joined to the opposite outer firstcontoured edge 19 of the sole 12, such as by welding or other means.
- a flat stamped sheet material 10 such as of 0.010 springtempered stainless steel
- the archprotecting element 14 forms an arch open at the front and rear, with edge 18 welded by a weld seam 20 to the opposite edge 19 of the sole element 12.
- the blank is of uniform thickness and composed of a unitary integral material.
- the method of manufacture is simple in requiring only a single short weld seam or other means to join the edge 18 to the outer edge 19 of sole [2. This construction avoids long weld seams along the sole-protecting portion, provides strength to the soleprotecting portion by being of integral construction and without any seams to provide discomfort or to reduce the protection of the sole-protecting portion.
- FIGS. 3 and 4 are illustrations of a multiple layer arch in a protective device of my invention which comprises a sheet of blank material comprising an integral unitary sole-protecting element 32, and two oppositely spaced and substantially equally shaped archprotecting elements 34 and 36 joined to the sole 32 along formable lines of adjoinment 38 and 40.
- the arch elements have free foot-contoured-shaped outer edges 42 and 44, and are each adapted to be formed into a separate arch, with the edge 42 joined to 38 and 44 to be joined to through weld seams 46 and 48 to form a double-thickness layer arched toe-protecting portion.
- the double layer has been shown to be joined together at each edge 42 and 44; however, it is recognized that the overlapping arch elements 34 and 36 may be joined, such as by welding at the corners or top of the arches or in other locations. Either arch element 34 or 36 may be bent first and its edge joined to the sole edge, with the edge of the other arch element secured to the outside along the line adjoining the other arch element to the sole.
- This embodiment permits a thin unitary blank material to be used as the sole-protecting portion where flexibility is desired, such as where the sole-protecting portion is to cover all or substantially all of the wearers sole, and yet provides a double layer for additional strength to the toe-protecting portion of my protective device.
- FIGS. 5 and 6 illustrate another embodiment of my protective device which comprises a sheet blank material 50 containing a sole-protecting element 52 and an arch element 54, the arch element 54 formed as a part of the blank at the toe position of the sole element 52, and adjoining such sole element 52 along discontinuous lines 62 and 64.
- the arch element is fan-like in shape
- contoured line 60 which forms the first open edge of the toe-protecting portion, defining an open space between the lines 62 and 64, and has outer opposite foot-contoured edges 56 and 58 adapted to be joined to each side, respectively, of the outer footcontoured edge ofthe sole element 52.
- the open space forms the open front of the arched toe-protecting portion of my device.
- the arch element and edges 56, 58 and 60 are formed so that the arch element may be bent over axially of the sole element 52 along lines 62 and 64, and the edges 56 and 58 joined by weld seams 66 and 68 to the outer sole element edges 57 and 59 to form a protective device.
- the sole-protecting portion provides strength and protection due to its unitary property, while it is absent of any joining seams.
- FIGS. 7 and 8 illustrate a further multiple layer protective device which combines the embodiments of FIGS. 3-6.
- a sheet blank material comprises a sole element 82, and three arch elements 84, 86 and 88 having outer foot-contoured edges 90, 92, 94 and 96 adapted to be joined together to the outer edge on each side of the sole element 82, such as by weld seams 98 for edge 96, 100 for edge 90, and 102 and 106 for edges 92 and 94.
- the arch elements may have element 88 formed first or last, followed by elements 84 and 86, and where element 88 is formed first, edges 92 and 94 need not be secured, but the element held in position when the elements 82 and 84 are joined to edges of the sole element 82.
- the blank material may be formed of very thin material, since the overlapping arch elements provide increased thickness, strength and protection to the wearer in the toeprotection portion.
- My protective device has been explained for the purposes of illustration employing sheet steel material; however, any sheet material including, but not limited to, thermoplastic and thermosetting-type polymers, such as glass-fiber-reinforced or molded or thermoformed rigid plastic, may be used.
- the arch elements of my embodiments have been joined by welding and the use of weld seams; however, any suitable means of joining may be used to secure the arch elements in position, such as adhesives where polymers are used, welding, ultrasonic welding techniques, sewing and the like.
- the overlapping wing elements may be welded or joined by adhesive, etc. at the top of the arch or in one or more positions, leaving the edges free.
- My protective device overcomes many of the past difficulties in protective devices, and has the advantage of providing enhanced sole protection and increased arch protection through single or multiple layers.
- a protective device for insertion and use in safety footwear which device comprises in combination:
- a unitary one piece of hard stiff sheet material comprising a sole-protecting portion and a toeprotecting portion
- the toe-protecting portion characterized by open front and rear ends, and comprising at least one integrally joined extending element along one edge of the sole-protecting portion, the toeprotecting element having at least one footcontoured outer edge adjacent to an outer footcontoured edge of the sole-protecting portion, and formed into an integral toe-protecting arch extending across the sole-protecting portion,
- the sole-protecting portion having at least one complimentary shaped outer edge with the said outer edge of the toe-protecting element
- iii means to join the outer edge of the toeprotecting element to the complimentary outer edge of the soleprotecting portion, thereby forming a protective device having a unitary soleprotecting portion and a unitary toe-protecting portion characterized by open front and rear ends.
- the toe-protecting portion comprises two toe-protecting elements substantially equally shaped in dimension, each element positionedat opposite edges of the sole-protecting portion and integrally joined therewith, the elements contoured at their respective outer edges to fit the respective opposite outer edge of the foot-contoured portion of the sole-protecting portion, and means to join to-' 'portion open at the front and rear, the toe-protecting portion forming an overlapping double-layer toeprotecting arch with the protective device characterized by a single thickness for the sole-protecting portion.
- the toe-protecting portion comprises a toe-protecting element which is integrally joined to the front edge of the sole-protecting portion, the toe-protecting element integrally joined to the sole-protecting portion at either side thereof, and characterized by a crescent-like space therebetween which provides, on forming, the front open space of the toe-protecting arch, the opposite outer edges of the toe-protecting element having a contour approximately that of each side of the toe-protecting portion, the toeprotecting element bent backward so as to place the outer edges of the toe-protecting element adjacent the respective outer edges of the sole-protecting element, and means to join each of the outer edges of the toeprotecting element to the outer edges of the soleprotecting portion.
- the device of claim 6 which includes the toeprotecting element comprising two toe-protecting elements of substantially equally shaped dimensions, each element integrally joined to the sole-protecting portion on the opposite sides thereof, and formed over or under the sole-protecting element to form a double-layer arch, the second and third toe-protecting elements adapted to be formed into a double-layer arch either before or after the formation of a single-layer arch by the first toe-protecting element, thereby providing a three-layer arch with a single-layer sole-protecting portron.
- the toeprotecting element comprising two toe-protecting elements of substantially equally shaped dimensions, each element integrally joined to the sole-protecting portion on the opposite sides thereof, and formed over or under the sole-protecting element to form a double-layer arch, the second and third toe-protecting elements adapted to be formed into a double-layer arch either before or after the formation of a single-layer arch by the first toe-protecting element, thereby providing a three-layer arch with a single
- the sheet material comprises a thermo-formed rigid plastic material.
- a protective device for use in safety-type footwear which device comprises in combination: a soleprotecting portion and a toe-protecting portion,
- the toe-protecting portion characterized by an open front and rear arch element, the arch composed of multiple layers of an adjacent, overlapping, arch-formed sheet material from which the sole-protecting portion has been formed, each of the arch-formed sheet materials integral with and along one foot-contoured outer edge of the sheet material, and
- iii means to secure the opposite foot-contoured outer edges of the arch material to the respective edges of the sole-protecting portion to form a multiple layer, toe-protecting portion.
- the sheet material comprises a hard stiff plastic material.
- the device of claim 8 wherein the sheet material comprises steel and means to secure comprises a weld seam along the respective foot-contoured edges.
Landscapes
- Health & Medical Sciences (AREA)
- Epidemiology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
Abstract
A protective device for use in safety footwear which comprises a unitary sole-protecting portion and a toe-protecting portion secured along at least one side of the sole-protecting portion, and adapted to be formed into one or multiple layers of an openended arch as a toe-protecting portion.
Description
' United States Patent 1191 Howland, Jr. 1 Nov. 5, 1974 [54] PROTECTIVE DEVICE FOR SAFETY SHOES 1,867,036 7 1932 Strauss 36/72 R 3,012,343 12/1961 Dinkel 36/72 R [75] Inventor' 3772:: E 3,716,932 2 1973 Pakulak 1. 36/72 R [73] Assignee: Safety, Inc., Boston, Mass. Primary Examiner patrick Lawson [22] Filed: Jan. 17, 1974 Attorney, Agent, or FirmRichard P. Crowley [21] Appl. No.: 434,267
' [5 7] ABSTRACT A protective device for use in safety footwear which [58] Fie'ld 72 B 72 C comprises a unitary sole-protecting portion and a toe- 3 7 R 5 7 protecting portion secured along at least one side of the sole-protecting portion, and adapted to be formed [56] References Cited into one or multiple layers of an open-ended arch as a toe-protecting portion. UNITED STATES PATENTS 1,125,558 1/1915 Koebel 36/72 R 14 Claims, 8 Drawing Figures 1 PROTECTIVE DEVICE FOR SAFETY SHOES BACKGROUND OF THE INVENTION Safety-type footwear of the protective type is often employed to protect the foot of the wearer from crushing weights or penetration of the footwear by sharp objects, such as nails. Protective footwear, although customarily worn by policemen, firemen, miners, construction workers or others working in industry, may also be usefully employed to prevent or minimize foot injuries to children or others. Protective footwear may be designed to protect the toes of the wearer, the meta tarsal arch, the sole of the wearer and combinations thereof.
Protective footwear is typically fabricated by inserting in the footwear a protective device which has been formed by stamping a sheet material, such as stamping sheet steel in a die press, to blank out flat material, and, thereafter, forming theblank into the protective device to be inserted into the footwear. Typically, the blank so prepared is of uniform thickness, the thickness of the material governed by the extent of protection desired. The sheet material thickness is often limited by the need of the wearer of the protective footwear, such as, for example, the requirement of the wearer to flex the sole of the shoe where sole-protective devices are used, and the bulkiness of any protecting arch designed to protect the toe or metatarsal arch of the foot. A protective element for safety shoes which provides an open toe protective arch open at the front or rear and a soleprotecting portion designed to underlie the sole of the wearer of the footwear is described in US. Pat. No. 3,410,007, patented Nov. l2,- l968, which is incorporated by reference herein.
The protective element described in US. Pat. No.
3,410,007, while satisfactory in providing a toeprotecting arch and a sole-protecting portion, has certain apparent disadvantages. both in use and in the method of manufacture. For example, the protective element requires the formation of a blank having equal wing-type portions which must be jointed together,
such as by welding, along a straight-line portion to form the sole-protecting portion of the element. This technique, therefore, requires a seam along the soleprotecting portion with careful alignment of the twowing portions during manufacture. together with the inherent weakness of the portions so joined when struck by a very sharp object along the seam line, together also with the expense of joining the wining portion along a long seam line, particularly where the soleprotecting portion extends substantially through the entire sole layer, More particularly, the blank must be formed of uniform material, and, thus, the archprotecting portion and the sole-protecting portion are of substantially uniform and equal thickness.
SUMMARY OF THE INVENTION My invention relates to a protective device for footwear and to a method of manufacturing the same,
which device provides ease in manufacture and flexibility in the amount and type of protection given to a underlie all or a part of the wearers foot. The soleprotecting portion, together with the arch-protecting portion, provides additional safety to the wearer, and has advantages in providing flexibility in the amount of protection and the ease of manufacture thereof.
My protective device provides many advantages in protection, manufacture and use. For example, the use of a unitary sole-protecting portion in'my device provides for theadvantage of greater strength in the unitary material, while it avoids the time and difficulty associated with the welding or joining composite sheet material together along a seam line in the soleprotecting portion as in the Peterson patent. The elimination of a seam line in the sole-protecting portion not only provides the greater strength, but avoids any discomfort to the wearer from a seam therein, such as a welding bead, or the improper joining of such composite materials together. Furthermore, my protective device permits the open arch-forming portion to be formed in a simple and efficient manner from an integeral blank material, and in certain embodiments described permits enhanced strength of the arch-forming portion from an integral uniform thickness blank material. In my device, the use of only one adjoining edge minimizes the possibility of failure of the device when the arch-protecting portion is struck by a crushing blow. For example, only one edge of each arch-protecting portion needs be joined to the opposite edge which is integrally joined to the soleprotecting portion. In addition, the multiple two or three arch-protecting portions in my blank material permit an overlapping and strong multiple layer effect in the open-arch portion. In the simplest embodiments of the multiple layer effect, a single material may be employed where minimal protection is desired, such as in children's shoes, or a multiple layer effect used where enhanced protection is desired, such as in heavy industrial-type safety footwear. In my device, a great portion of the stren'gth for protection purposes is related to the structural configuration of the blank, whether a single or multiple layer at the archprotecting portion, in combination with the integral sole-protecting portion, rather than in the past, relying on the particular construction of the shoe in which the protective device is used.
By the term sole protecting portion as used herein, it is meant theprotection of all or any part of the sole of the foot of the wearer in which my protective device is to be inserted and used. Where flexibility of the sole of the safety shoe is an important consideration, then the sole-protecting portion of my device may then only cover a selected portion of the sole' of the shoe, such as a portion extending less than'the instep, so that flexibility of the wearers sole is maintained. Where the soleprotecting portion only partially protects the entire sole, then it may be composed of a thicker material to provide additional protection if desired in comparison to a sole-protecting portion which extends to cover all or substantially all of the sole, wherein thinner material must be used to maintain sole flexibility for the user.
By the term toe-protecting portion as used herein, it is meant the protection of the toes or the matatarsal arch, or both, of the foot of the wearer in which the protective device is to be inserted and used. The archprotecting portion is open at the front and rear end blank material or multiple, adjacent, overlapping layers of the blank material where enhanced protection is desired of the arch-protecting portion, but thinner material in a single layer is required for flexibility in the soleprotecting portion.
BRIEF DESCRIPTION OF THE DRAWINGS In the accompanying drawings, several embodiments of my invention are illustrated by way of examples.
FIG. 1 is a representation of a blank formed of a bendable sheet material which may, in one embodiment, be formed into my protective device.
FIG. 2 is a cross-sectional view of the blank of FIG. 1 along the line of 2-2 of FIG. 1 when formed into a protective device of my invention.
FIG. 3 is another embodiment of a blank which may be formed into a protective device of my invention having a multiple layer toe-protecting portion.
FIG. 4 is a cross-sectional view along the line 44 of FIG. 1 showing the blank as formed into a protective device.
FIG. 5 is a blank of another embodiment of my invention.
FIG. 6 is a top elevation view of the blank of FIG. 5 as formed into a protective device of my invention.
FIG. 7 is a blank of another embodiment of my invention which combines the structural features of the preceding embodiments.
FIG. 8 is a cross-sectional view along the line 88 of FIG. 7 showing a multiple layer construction into a pro tective device of the blank of FIG. 7.
DESCRIPTION OF THE EMBODIMENTS FIGS. 1 and 2 illustrate one embodiment wherein a flat stamped sheet material 10, such as of 0.010 springtempered stainless steel, is formed comprising a soleprotecting element I2 which extends in this illustration to cover only a portion of the sole of the wearer; for example, extended as show-n to just before the instep of the wearer, and an open arch toe-protecting element 14. The arch element 14 is integral with the sole 12, but is formable, such as by bending, along the foot contour line 16 of the blank, while the opposite free edge of the arch 14 is represented by an outer foot-contoured edge 18 adapted to be joined to the opposite outer firstcontoured edge 19 of the sole 12, such as by welding or other means. As illustrated in FIG. 2, the archprotecting element 14 forms an arch open at the front and rear, with edge 18 welded by a weld seam 20 to the opposite edge 19 of the sole element 12. The blank is of uniform thickness and composed of a unitary integral material. The method of manufacture is simple in requiring only a single short weld seam or other means to join the edge 18 to the outer edge 19 of sole [2. This construction avoids long weld seams along the sole-protecting portion, provides strength to the soleprotecting portion by being of integral construction and without any seams to provide discomfort or to reduce the protection of the sole-protecting portion.
FIGS. 3 and 4 are illustrations of a multiple layer arch in a protective device of my invention which comprises a sheet of blank material comprising an integral unitary sole-protecting element 32, and two oppositely spaced and substantially equally shaped archprotecting elements 34 and 36 joined to the sole 32 along formable lines of adjoinment 38 and 40. The arch elements have free foot-contoured-shaped outer edges 42 and 44, and are each adapted to be formed into a separate arch, with the edge 42 joined to 38 and 44 to be joined to through weld seams 46 and 48 to form a double-thickness layer arched toe-protecting portion. The double layer has been shown to be joined together at each edge 42 and 44; however, it is recognized that the overlapping arch elements 34 and 36 may be joined, such as by welding at the corners or top of the arches or in other locations. Either arch element 34 or 36 may be bent first and its edge joined to the sole edge, with the edge of the other arch element secured to the outside along the line adjoining the other arch element to the sole. This embodiment permits a thin unitary blank material to be used as the sole-protecting portion where flexibility is desired, such as where the sole-protecting portion is to cover all or substantially all of the wearers sole, and yet provides a double layer for additional strength to the toe-protecting portion of my protective device.
FIGS. 5 and 6 illustrate another embodiment of my protective device which comprises a sheet blank material 50 containing a sole-protecting element 52 and an arch element 54, the arch element 54 formed as a part of the blank at the toe position of the sole element 52, and adjoining such sole element 52 along discontinuous lines 62 and 64. The arch element is fan-like in shape,
' with a contoured line 60, which forms the first open edge of the toe-protecting portion, defining an open space between the lines 62 and 64, and has outer opposite foot- contoured edges 56 and 58 adapted to be joined to each side, respectively, of the outer footcontoured edge ofthe sole element 52. The open space forms the open front of the arched toe-protecting portion of my device. The arch element and edges 56, 58 and 60 are formed so that the arch element may be bent over axially of the sole element 52 along lines 62 and 64, and the edges 56 and 58 joined by weld seams 66 and 68 to the outer sole element edges 57 and 59 to form a protective device. The sole-protecting portion provides strength and protection due to its unitary property, while it is absent of any joining seams.
FIGS. 7 and 8 illustrate a further multiple layer protective device which combines the embodiments of FIGS. 3-6. A sheet blank material comprises a sole element 82, and three arch elements 84, 86 and 88 having outer foot-contoured edges 90, 92, 94 and 96 adapted to be joined together to the outer edge on each side of the sole element 82, such as by weld seams 98 for edge 96, 100 for edge 90, and 102 and 106 for edges 92 and 94. The arch elements may have element 88 formed first or last, followed by elements 84 and 86, and where element 88 is formed first, edges 92 and 94 need not be secured, but the element held in position when the elements 82 and 84 are joined to edges of the sole element 82. In this embodiment, the blank material may be formed of very thin material, since the overlapping arch elements provide increased thickness, strength and protection to the wearer in the toeprotection portion.
My protective device has been explained for the purposes of illustration employing sheet steel material; however, any sheet material including, but not limited to, thermoplastic and thermosetting-type polymers, such as glass-fiber-reinforced or molded or thermoformed rigid plastic, may be used. The arch elements of my embodiments have been joined by welding and the use of weld seams; however, any suitable means of joining may be used to secure the arch elements in position, such as adhesives where polymers are used, welding, ultrasonic welding techniques, sewing and the like. For example, the overlapping wing elements may be welded or joined by adhesive, etc. at the top of the arch or in one or more positions, leaving the edges free.
My protective device overcomes many of the past difficulties in protective devices, and has the advantage of providing enhanced sole protection and increased arch protection through single or multiple layers.
What is claimed is:
l. A protective device for insertion and use in safety footwear, which device comprises in combination:
a unitary one piece of hard stiff sheet material comprising a sole-protecting portion and a toeprotecting portion,
i. the toe-protecting portion characterized by open front and rear ends, and comprising at least one integrally joined extending element along one edge of the sole-protecting portion, the toeprotecting element having at least one footcontoured outer edge adjacent to an outer footcontoured edge of the sole-protecting portion, and formed into an integral toe-protecting arch extending across the sole-protecting portion,
ii. the sole-protecting portion having at least one complimentary shaped outer edge with the said outer edge of the toe-protecting element, and
iii. means to join the outer edge of the toeprotecting element to the complimentary outer edge of the soleprotecting portion, thereby forming a protective device having a unitary soleprotecting portion and a unitary toe-protecting portion characterized by open front and rear ends.
2. The device of claim 1 wherein the toe-protecting portion is joined at one side only to the sole-protecting portion, the toe-protecting portion secured at its outer edge to the outer opposite edge of the sole-protecting portion to form a protective device characterized by a single uniform layer of material forming both the toeprotecting portion and the sole-protecting portion.
3. The device of claim 1 wherein the sole-protecting portion extends to cover all or substantially all of the sole of the wearer.
4. The device of claim 1 wherein the sole-protecting portion extends from the toe of the wearer backward to a position such that the wearer may flex his foot without interference by the sole-protecting portion.
5. The device of claim 1 wherein the toe-protecting portion comprises two toe-protecting elements substantially equally shaped in dimension, each element positionedat opposite edges of the sole-protecting portion and integrally joined therewith, the elements contoured at their respective outer edges to fit the respective opposite outer edge of the foot-contoured portion of the sole-protecting portion, and means to join to-' 'portion open at the front and rear, the toe-protecting portion forming an overlapping double-layer toeprotecting arch with the protective device characterized by a single thickness for the sole-protecting portion.
6. The device of claim 1 wherein the toe-protecting portion comprises a toe-protecting element which is integrally joined to the front edge of the sole-protecting portion, the toe-protecting element integrally joined to the sole-protecting portion at either side thereof, and characterized by a crescent-like space therebetween which provides, on forming, the front open space of the toe-protecting arch, the opposite outer edges of the toe-protecting element having a contour approximately that of each side of the toe-protecting portion, the toeprotecting element bent backward so as to place the outer edges of the toe-protecting element adjacent the respective outer edges of the sole-protecting element, and means to join each of the outer edges of the toeprotecting element to the outer edges of the soleprotecting portion.
7. The device of claim 6 which includes the toeprotecting element comprising two toe-protecting elements of substantially equally shaped dimensions, each element integrally joined to the sole-protecting portion on the opposite sides thereof, and formed over or under the sole-protecting element to form a double-layer arch, the second and third toe-protecting elements adapted to be formed into a double-layer arch either before or after the formation of a single-layer arch by the first toe-protecting element, thereby providing a three-layer arch with a single-layer sole-protecting portron.
8. The device of claim 6 wherein the sheet material comprises a thermo-formed rigid plastic material.
9. A shoe into which has been inserted the protective device of claim 1.
10. A protective device for use in safety-type footwear, which device comprises in combination: a soleprotecting portion and a toe-protecting portion,
i. the sole-protecting portion formed of a unitary integral single-thickness sheet material, and
ii. the toe-protecting portion characterized by an open front and rear arch element, the arch composed of multiple layers of an adjacent, overlapping, arch-formed sheet material from which the sole-protecting portion has been formed, each of the arch-formed sheet materials integral with and along one foot-contoured outer edge of the sheet material, and
iii. means to secure the opposite foot-contoured outer edges of the arch material to the respective edges of the sole-protecting portion to form a multiple layer, toe-protecting portion.
11. The device of claim 8 wherein the sheet material comprises a hard stiff plastic material.
12. The device of claim 8 wherein the sole-protecting portion extends less than the full length of the sole of the footwear in which the device is inserted.
13. The device of claim 8 wherein the sheet material comprises steel and means to secure comprises a weld seam along the respective foot-contoured edges.
14. A shoe into which has been inserted the protective device of claim 8.
Claims (14)
1. A protective device for insertion and use in safety footwear, which device comprises in combination: a unitary one piece of hard stiff sheet material comprising a sole-protecting portion and a toe-protecting portion, i. the toe-protecting portion characterized by open front and rear ends, and comprising at least one integrally joined extending element along one edge of the sole-protecting portion, the toe-protecting element having at least one footcontoured outer edge adjacent to an outer foot-contoured edge of the sole-protecting portion, and formed into an integral toe-protecting arch extending across the sole-protecting portion, ii. the sole-protecting portion having at least one complimentary shaped outer edge with the said outer edge of the toe-protecting element, and iii. means to join the outer edge of the toe-protecting element to the complimentary outer edge of the sole-protecting portion, thereby foRming a protective device having a unitary sole-protecting portion and a unitary toe-protecting portion characterized by open front and rear ends.
2. The device of claim 1 wherein the toe-protecting portion is joined at one side only to the sole-protecting portion, the toe-protecting portion secured at its outer edge to the outer opposite edge of the sole-protecting portion to form a protective device characterized by a single uniform layer of material forming both the toe-protecting portion and the sole-protecting portion.
3. The device of claim 1 wherein the sole-protecting portion extends to cover all or substantially all of the sole of the wearer.
4. The device of claim 1 wherein the sole-protecting portion extends from the toe of the wearer backward to a position such that the wearer may flex his foot without interference by the sole-protecting portion.
5. The device of claim 1 wherein the toe-protecting portion comprises two toe-protecting elements substantially equally shaped in dimension, each element positioned at opposite edges of the sole-protecting portion and integrally joined therewith, the elements contoured at their respective outer edges to fit the respective opposite outer edge of the foot-contoured portion of the sole-protecting portion, and means to join together the respective outer edges of the toe-protecting elements to the respective complimentary outer edges of the sole-protecting portion to form a toe-protecting portion open at the front and rear, the toe-protecting portion forming an overlapping double-layer toe-protecting arch with the protective device characterized by a single thickness for the sole-protecting portion.
6. The device of claim 1 wherein the toe-protecting portion comprises a toe-protecting element which is integrally joined to the front edge of the sole-protecting portion, the toe-protecting element integrally joined to the sole-protecting portion at either side thereof, and characterized by a crescent-like space therebetween which provides, on forming, the front open space of the toe-protecting arch, the opposite outer edges of the toe-protecting element having a contour approximately that of each side of the toe-protecting portion, the toe-protecting element bent backward so as to place the outer edges of the toe-protecting element adjacent the respective outer edges of the sole-protecting element, and means to join each of the outer edges of the toe-protecting element to the outer edges of the sole-protecting portion.
7. The device of claim 6 which includes the toe-protecting element comprising two toe-protecting elements of substantially equally shaped dimensions, each element integrally joined to the sole-protecting portion on the opposite sides thereof, and formed over or under the sole-protecting element to form a double-layer arch, the second and third toe-protecting elements adapted to be formed into a double-layer arch either before or after the formation of a single-layer arch by the first toe-protecting element, thereby providing a three-layer arch with a single-layer sole-protecting portion.
8. The device of claim 6 wherein the sheet material comprises a thermo-formed rigid plastic material.
9. A shoe into which has been inserted the protective device of claim 1.
10. A protective device for use in safety-type footwear, which device comprises in combination: a sole-protecting portion and a toe-protecting portion, i. the sole-protecting portion formed of a unitary integral single-thickness sheet material, and ii. the toe-protecting portion characterized by an open front and rear arch element, the arch composed of multiple layers of an adjacent, overlapping, arch-formed sheet material from which the sole-protecting portion has been formed, each of the arch-formed sheet materials integral with and along one foot-contoured outer edge of the sheet material, and iii. means to secure the opposite foot-contoured outer edges of the arch material to the respective edGes of the sole-protecting portion to form a multiple layer, toe-protecting portion.
11. The device of claim 8 wherein the sheet material comprises a hard stiff plastic material.
12. The device of claim 8 wherein the sole-protecting portion extends less than the full length of the sole of the footwear in which the device is inserted.
13. The device of claim 8 wherein the sheet material comprises steel and means to secure comprises a weld seam along the respective foot-contoured edges.
14. A shoe into which has been inserted the protective device of claim 8.
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US00434267A US3845576A (en) | 1974-01-17 | 1974-01-17 | Protective device for safety shoes |
US494380A US3903557A (en) | 1974-01-17 | 1974-08-02 | Method of preparing a protective device for safety shoes |
DE19752500393 DE2500393A1 (en) | 1974-01-17 | 1975-01-07 | PROTECTIVE INSERT FOR SAFETY SHOES |
AU77192/75A AU490509B2 (en) | 1974-01-17 | 1975-01-08 | Protective device for safety shoes |
GB937/75A GB1489940A (en) | 1974-01-17 | 1975-01-09 | Protective device for safety shoes |
CA217,962A CA1021937A (en) | 1974-01-17 | 1975-01-15 | Protective device for safety shoes |
FR7501256A FR2258140B1 (en) | 1974-01-17 | 1975-01-16 | |
JP50007202A JPS586481B2 (en) | 1974-01-17 | 1975-01-17 | Anzengu Tsunotamenohogosouchi |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US00434267A US3845576A (en) | 1974-01-17 | 1974-01-17 | Protective device for safety shoes |
Publications (1)
Publication Number | Publication Date |
---|---|
US3845576A true US3845576A (en) | 1974-11-05 |
Family
ID=23723532
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US00434267A Expired - Lifetime US3845576A (en) | 1974-01-17 | 1974-01-17 | Protective device for safety shoes |
Country Status (6)
Country | Link |
---|---|
US (1) | US3845576A (en) |
JP (1) | JPS586481B2 (en) |
CA (1) | CA1021937A (en) |
DE (1) | DE2500393A1 (en) |
FR (1) | FR2258140B1 (en) |
GB (1) | GB1489940A (en) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3903557A (en) * | 1974-01-17 | 1975-09-09 | Safety Inc | Method of preparing a protective device for safety shoes |
US4011667A (en) * | 1976-06-28 | 1977-03-15 | Safety Box Toe Company | Safety shoes |
US6425193B2 (en) | 1998-12-29 | 2002-07-30 | Bfr Holdings Limited | Protective boot and sole structure |
US20080163518A1 (en) * | 2007-01-05 | 2008-07-10 | Raymond Anthony Pettis | Shoe sole protector |
US20090166394A1 (en) * | 2008-01-02 | 2009-07-02 | Lawrence Gyorkos | External Nailing Device Adaptor |
US20110107620A1 (en) * | 2009-11-09 | 2011-05-12 | Nike, Inc. | Article of Footwear with Integral Upper and Sole |
US20130298428A1 (en) * | 2011-01-20 | 2013-11-14 | Erik Henry Tews | Device for adapting a shoe to attach a cycling cleat |
US20190239594A1 (en) * | 2018-04-18 | 2019-08-08 | Felicia A. Bell | Foot and toe protection device |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT402140B (en) * | 1994-03-25 | 1997-02-25 | Koeflach Sportgeraete Gmbh | Method for producing a safety shoe |
SG69947A1 (en) * | 1995-08-01 | 2000-01-25 | Guy Andrew Vaz | Improved blast and fragment resistant safety boot footwear |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1125558A (en) * | 1914-05-22 | 1915-01-19 | John J Clair | Protective overshoe. |
US1867036A (en) * | 1930-11-04 | 1932-07-12 | Albert A Strauss | Device for foot protection |
US3012343A (en) * | 1960-06-27 | 1961-12-12 | Charles E Dinkel | Sole protector for bowling shoes and the like |
US3716932A (en) * | 1971-05-11 | 1973-02-20 | S Pakulak | Slip on steel foot guard |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2565051A (en) * | 1948-03-11 | 1951-08-21 | Beckwith Mfg Co | Safety box toe |
US3410007A (en) * | 1966-01-04 | 1968-11-12 | Eric W. Peterson | Protective element for safety shoes |
-
1974
- 1974-01-17 US US00434267A patent/US3845576A/en not_active Expired - Lifetime
-
1975
- 1975-01-07 DE DE19752500393 patent/DE2500393A1/en not_active Withdrawn
- 1975-01-09 GB GB937/75A patent/GB1489940A/en not_active Expired
- 1975-01-15 CA CA217,962A patent/CA1021937A/en not_active Expired
- 1975-01-16 FR FR7501256A patent/FR2258140B1/fr not_active Expired
- 1975-01-17 JP JP50007202A patent/JPS586481B2/en not_active Expired
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1125558A (en) * | 1914-05-22 | 1915-01-19 | John J Clair | Protective overshoe. |
US1867036A (en) * | 1930-11-04 | 1932-07-12 | Albert A Strauss | Device for foot protection |
US3012343A (en) * | 1960-06-27 | 1961-12-12 | Charles E Dinkel | Sole protector for bowling shoes and the like |
US3716932A (en) * | 1971-05-11 | 1973-02-20 | S Pakulak | Slip on steel foot guard |
Cited By (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3903557A (en) * | 1974-01-17 | 1975-09-09 | Safety Inc | Method of preparing a protective device for safety shoes |
US4011667A (en) * | 1976-06-28 | 1977-03-15 | Safety Box Toe Company | Safety shoes |
US6425193B2 (en) | 1998-12-29 | 2002-07-30 | Bfr Holdings Limited | Protective boot and sole structure |
US6461673B1 (en) | 1998-12-29 | 2002-10-08 | Bfr Holdings Limited | Protective boot and sole structure |
US8024872B2 (en) | 2007-01-05 | 2011-09-27 | Raymond Anthony Pettis | Shoe sole protector |
US20080163518A1 (en) * | 2007-01-05 | 2008-07-10 | Raymond Anthony Pettis | Shoe sole protector |
US20090166394A1 (en) * | 2008-01-02 | 2009-07-02 | Lawrence Gyorkos | External Nailing Device Adaptor |
US8434245B2 (en) | 2009-11-09 | 2013-05-07 | Nike, Inc. | Article of footwear with integral upper and sole |
US20110107620A1 (en) * | 2009-11-09 | 2011-05-12 | Nike, Inc. | Article of Footwear with Integral Upper and Sole |
US9038287B2 (en) | 2009-11-09 | 2015-05-26 | Nike, Inc. | Article of footwear with integral upper and sole |
US9044058B2 (en) | 2009-11-09 | 2015-06-02 | Nike, Inc. | Article of footwear with integral upper and sole |
US9554619B2 (en) | 2009-11-09 | 2017-01-31 | Nike, Inc. | Article of footwear with integral upper and sole |
US9554618B2 (en) | 2009-11-09 | 2017-01-31 | Nike, Inc. | Article of footwear with integral upper and sole |
US20130298428A1 (en) * | 2011-01-20 | 2013-11-14 | Erik Henry Tews | Device for adapting a shoe to attach a cycling cleat |
US9254016B2 (en) * | 2011-01-20 | 2016-02-09 | Erik Henry Tews | Device for adapting a shoe to attach a cycling cleat |
US20190239594A1 (en) * | 2018-04-18 | 2019-08-08 | Felicia A. Bell | Foot and toe protection device |
US10602798B2 (en) * | 2018-04-18 | 2020-03-31 | Felicia A. Bell | Foot and toe protection device |
Also Published As
Publication number | Publication date |
---|---|
JPS50106737A (en) | 1975-08-22 |
FR2258140B1 (en) | 1981-06-19 |
DE2500393A1 (en) | 1975-07-24 |
AU7719275A (en) | 1976-07-08 |
FR2258140A1 (en) | 1975-08-18 |
CA1021937A (en) | 1977-12-06 |
JPS586481B2 (en) | 1983-02-04 |
GB1489940A (en) | 1977-10-26 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US3845576A (en) | Protective device for safety shoes | |
TWI653948B (en) | Method for manufacturing moisture-permeable waterproof shoes | |
JPS6233881B2 (en) | ||
US3270358A (en) | Method of manufacturing a safety shoe | |
US7328526B2 (en) | Metatarsal guard | |
US3903557A (en) | Method of preparing a protective device for safety shoes | |
US3665621A (en) | Footwear | |
JPH0880202A (en) | Box toe for security shoes and manufacture thereof | |
US3325922A (en) | Toe stiffener for shoes | |
US3410007A (en) | Protective element for safety shoes | |
US4839971A (en) | Front piece for shoes | |
US3785070A (en) | Cushion insole for shoes | |
US3707784A (en) | Cushion insole for shoes | |
US3793746A (en) | Slippers | |
US2312841A (en) | Protective armor | |
US355428A (en) | Inner sole for boots or shoes | |
KR200142685Y1 (en) | Upper for slipper | |
JP2014138635A (en) | Heel counter, and shoe | |
JP3177478B2 (en) | Fingertip protection plate | |
US1112553A (en) | Shoe construction. | |
US1985545A (en) | Shoe shank stiffener | |
US3232820A (en) | Rib stripping for insoles | |
KR880001069Y1 (en) | A working shoes | |
JP3364790B2 (en) | Footwear with fingertip protection and protective body used for this | |
WO2023047244A1 (en) | Footwear with sole provided with a protective insert |