CA1110060A - Safety boot toe cap construction - Google Patents
Safety boot toe cap constructionInfo
- Publication number
- CA1110060A CA1110060A CA340,280A CA340280A CA1110060A CA 1110060 A CA1110060 A CA 1110060A CA 340280 A CA340280 A CA 340280A CA 1110060 A CA1110060 A CA 1110060A
- Authority
- CA
- Canada
- Prior art keywords
- toe
- insole
- around
- insole member
- sewing
- 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
Links
Classifications
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B23/00—Uppers; Boot legs; Stiffeners; Other single parts of footwear
- A43B23/08—Heel stiffeners; Toe stiffeners
- A43B23/081—Toe stiffeners
- A43B23/082—Toe stiffeners made of metal
-
- 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
Abstract
SAFETY BOOT TOE CAP CONSTRUCTION
ABSTRACT OF THE DISCLOSURE
A steel box toe with relatively wide inturned flanges is inserted between the vamp and toe of a boot.
A double insole is used with the feather of the lower in-sole removed up to the sewing rib around the toe portion.
The flange of the box toe is engaged against the project-ing feather or edge of the upper insole thus giving suffi-cient clearance for machine sewing of the welt through the edge of the vamp and toe and into the vertically situated sewing rib. This enables an extra heavy duty safety boot to be produced economically and using the standard mass production techniques. Heretofore, such flanged box toes could only be incorporated with cemented or vulcanized con-struction and not with goodyear welt construction.
ABSTRACT OF THE DISCLOSURE
A steel box toe with relatively wide inturned flanges is inserted between the vamp and toe of a boot.
A double insole is used with the feather of the lower in-sole removed up to the sewing rib around the toe portion.
The flange of the box toe is engaged against the project-ing feather or edge of the upper insole thus giving suffi-cient clearance for machine sewing of the welt through the edge of the vamp and toe and into the vertically situated sewing rib. This enables an extra heavy duty safety boot to be produced economically and using the standard mass production techniques. Heretofore, such flanged box toes could only be incorporated with cemented or vulcanized con-struction and not with goodyear welt construction.
Description
111~Q60 SAFETY BOOT TOE CAP CONSTRUCTION
BACKGROUND OF THE INVENTION
This invention relates to new and useful improve-ments in the manufacture, by mass production techniques, of safety boots and shoes and although the term "boot" is used throughout the specification and claims, nevertheless it will be appreciated that it includes shoes also.
Conventionally, safety boots are classified accord-ing to the resistance of the steel box toe to an impact load measured in foot pounds. For example, a light duty safety boot will withstand an impact load of 35 foot pounds without distorting beyond a predetermined amount, a medium duty box toe will withstand 50 foot pounds, a heavy duty box toe will withstand 75 foot pounds, and an extra heavy box toe will withstand in excess of 100 foot pounds impact, all of which without distorting beyond a predetermined amount.
In order to produce extra heavy duty safety boots, a steel box toe must be used with a relatively wide inturned base flange in order to give sufficient rigidity to withstand the test impact. Unfortunately, the use of such box toes in-terferes with machine sewing and mass product manufacturing techniques.
While it is quite possible to produce an extra heavy box toe construction by the use of cemented or vulcanized 1110(~60 boot assembly, nevertheless this is not always satisfactory and acceptable to the workman using such a boot.
By far the most preferred type of construction is what is known as a "goodyear welt" construction which not only enables a boot to be produced which is sealed against the ingress of moisture and other contaminants while in use, but also permits the use of relatively thick rubber outsoles which provide more comfort to the end user, it being understood that such safety boots are often rela-tively heavy due to the construction thereof.
Unfortunately, the box toe construction with the inturned flange is difficult to use with a welted construc-tion unless hand sewing of the toe area is undertaken. With a goodyear welt, a horizontal stitch line is required pass-ing through the welt, through the lower perimeter of the up-per assembly, and through the sewing strip depending down-wardly from the underside of the insole.
The use of a heavy duty box toe with the inturned flange makes it extremely difficult to form this sewing line around the toe area, by conventional machinery as the needle often strikes the lower perimeter of the steel box causing the needle to break and slowing down the manufacture of this particular aspect of the safety boot.
Attempts have been made to solve this problem and reference should be made to prior art illustrating these attempts. For example, U.S. Patent 3986279 shows a heavy duty box toe but only in a non-welted construction so that the problem does not really arise.
U.S. Patent 2438016 attempts to solve the problem by utilizing an insertable toe plug cemented in place thus taking the place of a welt around the toe area and U.S.
Patent 4011667 utilizes a compromise box toe construction in which the flange is only vestigial, being formed on the box toe and incorporating a steel stress absorbing plate in the construction.
As mentioned previously, in so called cemented .
or vulcanized shoes, no particular problem is presented since it is merely a matter of providing safety toes of suitable steel alloy, thickness and dimensions and in such shoes, the safety toe can be produced having a relatively broad base flange of sufficient width to distribute the stresses exerted by the steel toe when a blow is exerted thereon. However, when it is desired to manufacture welt shoes having cushioned outsoles, a steel toe having a suf-ficiently broad base flange cannot be incorporated since the flange interferes with the needle as it forms the in-seam which joins the overlasted margin of the upper and the welt, to the aforementioned conventional sewing rib formed on the undersurface of the insole.
Another reason for preferring welt shoes is be-cause of the ease with which they can be re-soled and cushioned outsoles such as crepe rubber or the like are preferred since they are more comfortable and less tiring.
SUMMARY OF THE INVENTION
The present invention overcomes these disadvan-tages and in accordance with the invention there is provi-ded an insole for safety boot construction comprising an upper side and a lower side, said lower side including a substantially vertical, downwardly inclining sewing rib secured thereto and being spaced inwardly from the edge of said insole to define a feather around said sewing rib, said underside being recessed inwardly around the toe area, as far back as sai~ sewing rib, leaving the upper side pro-jecting beyond said sewing rib around said toe area.
Another aspect of the invention is to provide an insole assembly for safety boot construction which comprises in combination an upper insole member and lower insole mem-ber laminated to said upper insole member, said lower insole member including a substantially vertical, downwardly inclin-ing sewing rib secured to the undersurface thereof and being spaced inwardly from the edge of said lower insole member for the major length thereof, to define a feather around said sewing rib, said lower insole member being trimmed away !60 around the toe area thereof whereby said sewing rib extends around said toe area at the edge of said lower insole mem-ber, the upper insole member projecting beyond said sewing rib around the said toe area.
A still further aspect of the invention is to pro-vide a process for the manufacture of safety boots consist-ing of the steps of securing an insole assembly to the un-derside of a last with the insole assembly including an up-per insole member and a lower insole member laminated to said insole member, said lower insole member including a substantially vertical, downwardly inclining sewing rib se-cured to the undersurface thereof and being spaced inwardly from the edge of said lower insole member for the major length thereof, to define a feather around said sewing rib, said lower insole member being trimmed away around the toe area thereof, providing an upper including a vamp and a toe overlying the front part of said vamp, pulling said upper over the last with the material being brought -lown tightly to the last, peeling back the toe, inserting a steel box toe, with a relatively wi.de inturned flang~, between the vamp and the tce with the flange engaging over the extending porti.on of the insole assembly, replacing the toe and toe lasting same, and inserting a ~7elt strip around the perime-ter of the upper, machine sewing substantially horizontally, said welt strip, said upper, said vamp and said sewing strip and then finishing off the boot in the convention-al manner.
Another advantage of the invention is to enable an extra heavy duty safety boot to be constructed with a welted outsole assembly, utilizing conventional mass pro-duction techniques.
A still further advantage of the invention is to provide a safety boot construction with an extra heavy duty box toe, which is simple in construction, economical in manufacture and otherwise well suited to the purpose for which it is designed.
With the foregoing in view, and other advantages as will become apparent to those skilled in the art to which this invention relates as this specification proceeds, the invention is herein described by reference to the accompany-ing drawings forming a part hereof, which includes a descrip-tion of the preferred typical embodiment of the principles of the present invention, in which:
DESCRIPTION OF THE DRAWINGS
Figure 1 is an enlarged fragmentary cross section-al view of the toe area of a safety boot incorporating the invention.
Figure 2 is a fragmentary underside view of the 11'1~C~60 front portion of an insole assembly utilizing the inven-tion.
Figure 3 is a cross sectional view along the line 3-3 of Figure 2.
Figure 4 is a cross sectional view along the line 4-4 of Figure 2, but showing the location of the steel box toe.
Figure 5 is a view similar to Figure 2, but with the box toe in position.
Figure 6 is an isometric view of a wide flanged box toe showing the reverse position.
Figure 7 is a fragementary isometric view of the toe portion of a boot with the toe peeled back for the in-sertion of the toe box shown in position.
Figure 8 is a fragmentary underside view of the toe area of a safety boot showing the horizontal stitching of the welt in position.
In the drawings like characters of reference in-dicate corresponding parts in the different figures.
DETAILED DESCRIPTION
Proceeding therefore to describe the invention in detail, reference character 10 illustrates an insole assem-bly which is normally attached to the underside of the last (not illustrated) by means of tacks 11 as suggested in Figu-re 2.
An upper assembly collectively designated 12 and shown partially in Figure 7, is then pulled over, side lasted and heel lasted in the conventional manner. The upper assembly includes, for the purposes of this invention, a toe 13 and a vamp 14.
In a goodyear welt construction, to which this invention relates, a welt strip 15 is incorporated as will hereinafter be described.
In the manufacture of safety shoes or boots, a steel box toe collectively designated 16 is incorporated over the toe area and between the toe and the vamp portions.
The box toe 16 is usually made from hardened steel and is shaped to engage over the toe cap area and is provided with relatively wide inturned flange 17 formed upon the underside thereof when it is desired to produce an extra heavy duty boot or shoe construction. This flange distributes the stresses placed upon the box toe under impact.
The insole assembly collectively designated 10 in-cludes an upper portion or member 18 and a lower portion mem-ber 19, the two members 18 and 19 being laminated together by adhesive or other conventional fastening means.
A conventional sewing rib 20 reinforced by canvas or the like 21, is secured to the upper member 18 as by a 6~
sewing line 22 or the like and this downwardly projecting sewing rib is normally spaced inwardly from the perimetri-cal edges 23 and 24 of the two insole members.
However, in the present invention, the portion of the lower insole member 19, beyond the sewing rib 20 and normally referred to as the feather, is trimmed away around the toe area back to the sewing rib 20 as illustrated in Figures 2 and 4 thus leaving a recessed portion to the in-sole construction around this toe area, it being understood that the integrity of the upper insole portion feather is maintained.
This recess indicated by reference character 25, receives the inturned flange 17 of the steel box 16 and at the same time provides sufficient clearance for the horizon-tal stitch line 26, to be placed by conventional sewing machinery normally used in the welting operation.
The method of construction is therefore as follows:
Firstly, the double insole assembly 10, hereinbe-fore described, is tacked to the last with the upper side down whereupon the upper portion 12 of the boot is pulled over the last with the leather being brought down tightly to the last. This includes the vamp and toe piece 13 and 14.
The operator then peels back the toe piece and ~l~Q~6~
inserts the steel box toe 16 ensuring that the flange 17 engages the recess 25.
The toe cap is then pulled back over the steel box and the front of the shoe is toe lasted in the usual manner.
It will be noted that the steel box toe 16 is now situated between the vamp 14 and the toe piece 13 and that the flange 17 of the steel box toe is sandwiched bet-ween these two portions and seated substantially within the recess 25.
The aforementioned welt strip 15 is now position-ed around the entire perimeter of the boot and the horizon-tal stitch line 26 is formed extending through the welt strip, through adjacent the lower perimeters of the toe piece 13 and the vamp 14, and through the downwardly and vertically inclining sewing rib 20, it being noted that the flange 17 does not interfere with this stitching action.
The remaining portion of the manufacture is con-v~ntional and includes the vertical stitch line 27 which ex-tends through the welt strip, and through the outsole assem-bly 28 which, in this embodiment, includes the inner layer 29 and the relatively thick rubber or crepe layer 30.
Although the insole assembly 10 is shown and des-cribed as being formed from the upper and lower portions 18 61~
and 19 laminated together, it will be appreciated that a relatively thick insole assembly could be provided with the recess being machine formed by removing material around the toe area. However, the normal method of production is as shown and described.
It will therefore be seen that the incorporation of the novel insole assembly enables a relatively deeply flanged box toe 16 to be incorporated in a goodyear welt construction utilizing conventional sewing machinery and following conventional lasting techniques.
Since various modifications can be made in my in-vention as hereinabove described, and many apparently wide-ly different embodiments of same made within the spirit and scope of the claims without departing from such spirit and scope, it is intended that all matter contained in the ac-companying specification shall be interpreted as illustra-tive only and not in a limiting sense.
BACKGROUND OF THE INVENTION
This invention relates to new and useful improve-ments in the manufacture, by mass production techniques, of safety boots and shoes and although the term "boot" is used throughout the specification and claims, nevertheless it will be appreciated that it includes shoes also.
Conventionally, safety boots are classified accord-ing to the resistance of the steel box toe to an impact load measured in foot pounds. For example, a light duty safety boot will withstand an impact load of 35 foot pounds without distorting beyond a predetermined amount, a medium duty box toe will withstand 50 foot pounds, a heavy duty box toe will withstand 75 foot pounds, and an extra heavy box toe will withstand in excess of 100 foot pounds impact, all of which without distorting beyond a predetermined amount.
In order to produce extra heavy duty safety boots, a steel box toe must be used with a relatively wide inturned base flange in order to give sufficient rigidity to withstand the test impact. Unfortunately, the use of such box toes in-terferes with machine sewing and mass product manufacturing techniques.
While it is quite possible to produce an extra heavy box toe construction by the use of cemented or vulcanized 1110(~60 boot assembly, nevertheless this is not always satisfactory and acceptable to the workman using such a boot.
By far the most preferred type of construction is what is known as a "goodyear welt" construction which not only enables a boot to be produced which is sealed against the ingress of moisture and other contaminants while in use, but also permits the use of relatively thick rubber outsoles which provide more comfort to the end user, it being understood that such safety boots are often rela-tively heavy due to the construction thereof.
Unfortunately, the box toe construction with the inturned flange is difficult to use with a welted construc-tion unless hand sewing of the toe area is undertaken. With a goodyear welt, a horizontal stitch line is required pass-ing through the welt, through the lower perimeter of the up-per assembly, and through the sewing strip depending down-wardly from the underside of the insole.
The use of a heavy duty box toe with the inturned flange makes it extremely difficult to form this sewing line around the toe area, by conventional machinery as the needle often strikes the lower perimeter of the steel box causing the needle to break and slowing down the manufacture of this particular aspect of the safety boot.
Attempts have been made to solve this problem and reference should be made to prior art illustrating these attempts. For example, U.S. Patent 3986279 shows a heavy duty box toe but only in a non-welted construction so that the problem does not really arise.
U.S. Patent 2438016 attempts to solve the problem by utilizing an insertable toe plug cemented in place thus taking the place of a welt around the toe area and U.S.
Patent 4011667 utilizes a compromise box toe construction in which the flange is only vestigial, being formed on the box toe and incorporating a steel stress absorbing plate in the construction.
As mentioned previously, in so called cemented .
or vulcanized shoes, no particular problem is presented since it is merely a matter of providing safety toes of suitable steel alloy, thickness and dimensions and in such shoes, the safety toe can be produced having a relatively broad base flange of sufficient width to distribute the stresses exerted by the steel toe when a blow is exerted thereon. However, when it is desired to manufacture welt shoes having cushioned outsoles, a steel toe having a suf-ficiently broad base flange cannot be incorporated since the flange interferes with the needle as it forms the in-seam which joins the overlasted margin of the upper and the welt, to the aforementioned conventional sewing rib formed on the undersurface of the insole.
Another reason for preferring welt shoes is be-cause of the ease with which they can be re-soled and cushioned outsoles such as crepe rubber or the like are preferred since they are more comfortable and less tiring.
SUMMARY OF THE INVENTION
The present invention overcomes these disadvan-tages and in accordance with the invention there is provi-ded an insole for safety boot construction comprising an upper side and a lower side, said lower side including a substantially vertical, downwardly inclining sewing rib secured thereto and being spaced inwardly from the edge of said insole to define a feather around said sewing rib, said underside being recessed inwardly around the toe area, as far back as sai~ sewing rib, leaving the upper side pro-jecting beyond said sewing rib around said toe area.
Another aspect of the invention is to provide an insole assembly for safety boot construction which comprises in combination an upper insole member and lower insole mem-ber laminated to said upper insole member, said lower insole member including a substantially vertical, downwardly inclin-ing sewing rib secured to the undersurface thereof and being spaced inwardly from the edge of said lower insole member for the major length thereof, to define a feather around said sewing rib, said lower insole member being trimmed away !60 around the toe area thereof whereby said sewing rib extends around said toe area at the edge of said lower insole mem-ber, the upper insole member projecting beyond said sewing rib around the said toe area.
A still further aspect of the invention is to pro-vide a process for the manufacture of safety boots consist-ing of the steps of securing an insole assembly to the un-derside of a last with the insole assembly including an up-per insole member and a lower insole member laminated to said insole member, said lower insole member including a substantially vertical, downwardly inclining sewing rib se-cured to the undersurface thereof and being spaced inwardly from the edge of said lower insole member for the major length thereof, to define a feather around said sewing rib, said lower insole member being trimmed away around the toe area thereof, providing an upper including a vamp and a toe overlying the front part of said vamp, pulling said upper over the last with the material being brought -lown tightly to the last, peeling back the toe, inserting a steel box toe, with a relatively wi.de inturned flang~, between the vamp and the tce with the flange engaging over the extending porti.on of the insole assembly, replacing the toe and toe lasting same, and inserting a ~7elt strip around the perime-ter of the upper, machine sewing substantially horizontally, said welt strip, said upper, said vamp and said sewing strip and then finishing off the boot in the convention-al manner.
Another advantage of the invention is to enable an extra heavy duty safety boot to be constructed with a welted outsole assembly, utilizing conventional mass pro-duction techniques.
A still further advantage of the invention is to provide a safety boot construction with an extra heavy duty box toe, which is simple in construction, economical in manufacture and otherwise well suited to the purpose for which it is designed.
With the foregoing in view, and other advantages as will become apparent to those skilled in the art to which this invention relates as this specification proceeds, the invention is herein described by reference to the accompany-ing drawings forming a part hereof, which includes a descrip-tion of the preferred typical embodiment of the principles of the present invention, in which:
DESCRIPTION OF THE DRAWINGS
Figure 1 is an enlarged fragmentary cross section-al view of the toe area of a safety boot incorporating the invention.
Figure 2 is a fragmentary underside view of the 11'1~C~60 front portion of an insole assembly utilizing the inven-tion.
Figure 3 is a cross sectional view along the line 3-3 of Figure 2.
Figure 4 is a cross sectional view along the line 4-4 of Figure 2, but showing the location of the steel box toe.
Figure 5 is a view similar to Figure 2, but with the box toe in position.
Figure 6 is an isometric view of a wide flanged box toe showing the reverse position.
Figure 7 is a fragementary isometric view of the toe portion of a boot with the toe peeled back for the in-sertion of the toe box shown in position.
Figure 8 is a fragmentary underside view of the toe area of a safety boot showing the horizontal stitching of the welt in position.
In the drawings like characters of reference in-dicate corresponding parts in the different figures.
DETAILED DESCRIPTION
Proceeding therefore to describe the invention in detail, reference character 10 illustrates an insole assem-bly which is normally attached to the underside of the last (not illustrated) by means of tacks 11 as suggested in Figu-re 2.
An upper assembly collectively designated 12 and shown partially in Figure 7, is then pulled over, side lasted and heel lasted in the conventional manner. The upper assembly includes, for the purposes of this invention, a toe 13 and a vamp 14.
In a goodyear welt construction, to which this invention relates, a welt strip 15 is incorporated as will hereinafter be described.
In the manufacture of safety shoes or boots, a steel box toe collectively designated 16 is incorporated over the toe area and between the toe and the vamp portions.
The box toe 16 is usually made from hardened steel and is shaped to engage over the toe cap area and is provided with relatively wide inturned flange 17 formed upon the underside thereof when it is desired to produce an extra heavy duty boot or shoe construction. This flange distributes the stresses placed upon the box toe under impact.
The insole assembly collectively designated 10 in-cludes an upper portion or member 18 and a lower portion mem-ber 19, the two members 18 and 19 being laminated together by adhesive or other conventional fastening means.
A conventional sewing rib 20 reinforced by canvas or the like 21, is secured to the upper member 18 as by a 6~
sewing line 22 or the like and this downwardly projecting sewing rib is normally spaced inwardly from the perimetri-cal edges 23 and 24 of the two insole members.
However, in the present invention, the portion of the lower insole member 19, beyond the sewing rib 20 and normally referred to as the feather, is trimmed away around the toe area back to the sewing rib 20 as illustrated in Figures 2 and 4 thus leaving a recessed portion to the in-sole construction around this toe area, it being understood that the integrity of the upper insole portion feather is maintained.
This recess indicated by reference character 25, receives the inturned flange 17 of the steel box 16 and at the same time provides sufficient clearance for the horizon-tal stitch line 26, to be placed by conventional sewing machinery normally used in the welting operation.
The method of construction is therefore as follows:
Firstly, the double insole assembly 10, hereinbe-fore described, is tacked to the last with the upper side down whereupon the upper portion 12 of the boot is pulled over the last with the leather being brought down tightly to the last. This includes the vamp and toe piece 13 and 14.
The operator then peels back the toe piece and ~l~Q~6~
inserts the steel box toe 16 ensuring that the flange 17 engages the recess 25.
The toe cap is then pulled back over the steel box and the front of the shoe is toe lasted in the usual manner.
It will be noted that the steel box toe 16 is now situated between the vamp 14 and the toe piece 13 and that the flange 17 of the steel box toe is sandwiched bet-ween these two portions and seated substantially within the recess 25.
The aforementioned welt strip 15 is now position-ed around the entire perimeter of the boot and the horizon-tal stitch line 26 is formed extending through the welt strip, through adjacent the lower perimeters of the toe piece 13 and the vamp 14, and through the downwardly and vertically inclining sewing rib 20, it being noted that the flange 17 does not interfere with this stitching action.
The remaining portion of the manufacture is con-v~ntional and includes the vertical stitch line 27 which ex-tends through the welt strip, and through the outsole assem-bly 28 which, in this embodiment, includes the inner layer 29 and the relatively thick rubber or crepe layer 30.
Although the insole assembly 10 is shown and des-cribed as being formed from the upper and lower portions 18 61~
and 19 laminated together, it will be appreciated that a relatively thick insole assembly could be provided with the recess being machine formed by removing material around the toe area. However, the normal method of production is as shown and described.
It will therefore be seen that the incorporation of the novel insole assembly enables a relatively deeply flanged box toe 16 to be incorporated in a goodyear welt construction utilizing conventional sewing machinery and following conventional lasting techniques.
Since various modifications can be made in my in-vention as hereinabove described, and many apparently wide-ly different embodiments of same made within the spirit and scope of the claims without departing from such spirit and scope, it is intended that all matter contained in the ac-companying specification shall be interpreted as illustra-tive only and not in a limiting sense.
Claims
WHAT I CLAIM AS MY INVENTION IS:
(1) An insole assembly for safety boot construc-tion comprising an upper side and a lower side, said lower side including a substantially vertical, downwardly in-clining sewing rib secured thereto and being spaced inward-ly from the edge of said insole to define a feather around said sewing rib, said underside being recessed inwardly around the toe area, as far back as said sewing rib, leaving the upper side projecting beyond said sewing rib around said toe area.
(2) An insole assembly for safety boot construc-tion comprising in combination an upper insole member and a lower insole member laminated to said upper insole member, said lower insole member including a substantially vertical, downwardly inclining sewing rib secured to the undersurface thereof and being spaced inwardly from the edge of said low-er insole member for the major length thereof, to define a feather around said sewing rib, said lower insole member be-ing trimmed away around the toe area thereof whereby said sewing rib extends around said toe area at the edge of said lower insole member, the upper insole member projecting be-yond said sewing rib around the said toe area.
(3) A safety boot construction comprising in com-bination an upper assembly, an insole assembly and a welted outsole secured thereto, said upper assembly including a vamp and toe portion overlying the front end of said vamp, said insole assembly comprising an upper side and a lower side, said lower side including a substantially vertical, downwardly inclining sewing rib secured thereto and being spaced inwardly from the edge of said insole to define a feather around said sewing rib, said underside being reces-sed inwardly around the toe area, as far back as said sew-ing rib, leaving the upper side projecting beyond said sew-ing rib around said toe area.
(4) A safety boot construction comprising in com-bination an upper assembly, an inner assembly and a welted outsole secured thereto, said upper assembly including a vamp and a toe portion overlying the front end of said vamp, said insole assembly including an upper insole member and a lower insole member laminated to said upper insole member, said lower insole member including a substantially vertical, downwardly inclining sewing rib secured to the undersurface thereof and being spaced inwardly from the edge of said low-er insole member for the major length thereof, to define a feather around said sewing rib, said lower insole member be-ing trimmed away around the toe area thereof whereby said sewing rib extends around said toe area at the edge of said lower insole member, the upper insole member projecting be-yond said sewing rib around the said toe area.
(5) The invention according to Claim 3 which in-cludes a toe box of crush resistant material, said toe box having a relatively wide inturned flange formed around the lower perimeter thereof, said toe box being situated between said vamp and said toe portion, the inturned flange of said toe box being located against the portion of said upper in-sole projecting beyond said sewing rib around the toe area.
(6) The invention according to Claim 4 which in-cludes a toe box of crush resistant material, said toe box having a relatively wide inturned flange formed around the lower perimeter thereof, said toe box being situated between said vamp and said toe portion, the inturned flange of said toe box being located against the portion of said upper in-sole projecting beyond said sewing rib around the toe area.
(7) A process for the manufacture of safety boots consisting of the steps of securing an insole assembly to the underside of a last with the insole assembly including an upper insole member and a lower insole member laminated to said insole member, said lower insole member including a substantially vertical, downwardly inclining sewing rib secured to the undersurface thereof and being spaced inward-ly from the edge of said lower insole member for the major length thereof, to define a feather around said sewing rib, said lower insole member being trimmed away around the toe area thereof, providing an upper including a vamp and a toe overlying the front part of said vamp, pulling said upper over the last with the material being brought down tightly to the last, peeling back the toe, inserting a steel box toe, with a relatively wide inturned flange, between the vamp and the toe with the flange engaging over the extending portion of the insole assembly, replacing the toe and toe lasting same, and inserting a welt strip around the perimeter of the upper, machine sewing substantially horizontally, said welt strip, said upper, said vamp and said sewing strip and then finishing off the boot in the conventional manner.
(1) An insole assembly for safety boot construc-tion comprising an upper side and a lower side, said lower side including a substantially vertical, downwardly in-clining sewing rib secured thereto and being spaced inward-ly from the edge of said insole to define a feather around said sewing rib, said underside being recessed inwardly around the toe area, as far back as said sewing rib, leaving the upper side projecting beyond said sewing rib around said toe area.
(2) An insole assembly for safety boot construc-tion comprising in combination an upper insole member and a lower insole member laminated to said upper insole member, said lower insole member including a substantially vertical, downwardly inclining sewing rib secured to the undersurface thereof and being spaced inwardly from the edge of said low-er insole member for the major length thereof, to define a feather around said sewing rib, said lower insole member be-ing trimmed away around the toe area thereof whereby said sewing rib extends around said toe area at the edge of said lower insole member, the upper insole member projecting be-yond said sewing rib around the said toe area.
(3) A safety boot construction comprising in com-bination an upper assembly, an insole assembly and a welted outsole secured thereto, said upper assembly including a vamp and toe portion overlying the front end of said vamp, said insole assembly comprising an upper side and a lower side, said lower side including a substantially vertical, downwardly inclining sewing rib secured thereto and being spaced inwardly from the edge of said insole to define a feather around said sewing rib, said underside being reces-sed inwardly around the toe area, as far back as said sew-ing rib, leaving the upper side projecting beyond said sew-ing rib around said toe area.
(4) A safety boot construction comprising in com-bination an upper assembly, an inner assembly and a welted outsole secured thereto, said upper assembly including a vamp and a toe portion overlying the front end of said vamp, said insole assembly including an upper insole member and a lower insole member laminated to said upper insole member, said lower insole member including a substantially vertical, downwardly inclining sewing rib secured to the undersurface thereof and being spaced inwardly from the edge of said low-er insole member for the major length thereof, to define a feather around said sewing rib, said lower insole member be-ing trimmed away around the toe area thereof whereby said sewing rib extends around said toe area at the edge of said lower insole member, the upper insole member projecting be-yond said sewing rib around the said toe area.
(5) The invention according to Claim 3 which in-cludes a toe box of crush resistant material, said toe box having a relatively wide inturned flange formed around the lower perimeter thereof, said toe box being situated between said vamp and said toe portion, the inturned flange of said toe box being located against the portion of said upper in-sole projecting beyond said sewing rib around the toe area.
(6) The invention according to Claim 4 which in-cludes a toe box of crush resistant material, said toe box having a relatively wide inturned flange formed around the lower perimeter thereof, said toe box being situated between said vamp and said toe portion, the inturned flange of said toe box being located against the portion of said upper in-sole projecting beyond said sewing rib around the toe area.
(7) A process for the manufacture of safety boots consisting of the steps of securing an insole assembly to the underside of a last with the insole assembly including an upper insole member and a lower insole member laminated to said insole member, said lower insole member including a substantially vertical, downwardly inclining sewing rib secured to the undersurface thereof and being spaced inward-ly from the edge of said lower insole member for the major length thereof, to define a feather around said sewing rib, said lower insole member being trimmed away around the toe area thereof, providing an upper including a vamp and a toe overlying the front part of said vamp, pulling said upper over the last with the material being brought down tightly to the last, peeling back the toe, inserting a steel box toe, with a relatively wide inturned flange, between the vamp and the toe with the flange engaging over the extending portion of the insole assembly, replacing the toe and toe lasting same, and inserting a welt strip around the perimeter of the upper, machine sewing substantially horizontally, said welt strip, said upper, said vamp and said sewing strip and then finishing off the boot in the conventional manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA340,280A CA1110060A (en) | 1979-11-21 | 1979-11-21 | Safety boot toe cap construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA340,280A CA1110060A (en) | 1979-11-21 | 1979-11-21 | Safety boot toe cap construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1110060A true CA1110060A (en) | 1981-10-06 |
Family
ID=4115658
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA340,280A Expired CA1110060A (en) | 1979-11-21 | 1979-11-21 | Safety boot toe cap construction |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1110060A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6029373A (en) * | 1998-10-23 | 2000-02-29 | Gredico Footwear Ltd. | Stitch-down safety shoe |
-
1979
- 1979-11-21 CA CA340,280A patent/CA1110060A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6029373A (en) * | 1998-10-23 | 2000-02-29 | Gredico Footwear Ltd. | Stitch-down safety shoe |
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| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |