US 2985555 A
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Description (OCR text may contain errors)
May 23, 1961 v. A. SHERBROOK 2,985,555
SEPARATE SEWING RIB FOR INSOLES Filed May 8, 1958 ggg wmr A v QZIFIWX'JKZ A I 2 mmmmmmmomwam INVENTOR VICTOR A. SHERBROOK ATTORNEY Patented Mayzs, 1961 p v55555555 I SEPARATE SEWING Rm FOR lNsoLns I v 7 :Victor A Sherbrook, Mass. (164 Colonel fHunt'Drive, Abington, Mass.)
This invention lemme anew and improved separate rig; 3 isia'sectio nal view nms't'rafin initial "folding v of the two-part rib;
tape sewing rib construction for insoles for boots and shoes in general, and the construction and general ob jects .of the invention are similar to those appearing in my United States Patents ,Nos.: 2,7 13,692-and 2,752,278; Theprincipal improvement in-the present case resides in Fig A isa showing the rib; completely folded and ready for applicationto the insole; and I i Fig. S is a view similar to Fig; 2 illustrating the same invention applied slightly differently to the insole] v In carrying out the present invention, the sewing rib is shown in'Fig. 1 as generally indieated at 10, this being attached tothe insole, indicated generally at 12. vIt is to be understood that in general the forepart Of, t e'in sole will-be reduced in thickness in order to provide for greater flexibility and in general the objects and construction of the present invention are similar to those described in my above-identified" patents. j
Referringfirstto Fig, 3, there is shown an elongated substantiallyendless tape which is generally indicatedat 154. This is preferably formed of spoolable tapewhich the provision of a sewing rib for an insole which enables the stitching attaching the rib to the insole towbe done away with" but "instead there is provided anew and improved adhesive tape means-for accomplishing the same purpose. Stitching may also be used if desired, but the new;tape does net'depefia 'up' n'it. I 5
5 The sewing rib'of the" presentcase comprises in general a sin gle. length of folded-over tape longitudinally folded oven pponitselfto form a multi-ply rib, having a lateral longitudinally extending portion to be adhesivelysecurerf to the insole at the inside aspect of the upstanding multi-plyrib; and the particular improvement in the present case includes. the provision of a separate inserted elongated longitudinally-extending piece of adhesive tape-like material, such as for instance Scotchbrand tape, plastic, rubber composition, or any other adhesive tapes or materials having strong adhesive qualities and of resilient characteristics, this tape being inserted between the folds of the multi-ply rib above described, and extending outwardly therefrom in contact with the insole and extending in a direction opposite to the abovenamed laterally extending insole contacting portion of the folded-over tape.
Further objects of the invention include provision ofa double fold on the tape rib at the outside edge thereof which acts as a buttress or strong point when strain is applied to the rib in the process of making the shoe. The double fold acts as a pier at the base of the rib, giving the same additional strength at right angles to the direction of the strain imparted in the making of the shoe, and yet at the same time providing for maximum flexibility in a longitudinal direction when the finished shoe is worn upon the foot.
Further objects of the invention include the provision of an adhesively-applied stitchless sewing rib for insoles as above described including an adhesive tape at the outside aspect thereof forming a part of the rib, and the tape which is also adhesively secured at the inside thereof straddles the adhesive tape with two other thicknesses or folds, thus in effect forming a rib of four plies, this rib being held in upstanding relationship with respect to the insole for the purpose of sewing to the upper in the usual manner.
Other objects and advantages of the invention will appear hereinafter.
Reference is to be had to the accompanying drawings, in which:
Fig. l is a plan view of an insole having the new rib attached thereto;
Fig. 2 is a greatly enlarged sectional view through the rib and the insole;
may be of canvas,duck or any similar or suitable ma terial. 5 tape is folded over upon itself at one edge as cle arlyshown in Fig. 3 at 1 6, and this fold may be cemented as indicated at 18, to the surface 20;,of'the tape The next step in the formation of the new sewing rib is to apply to the'folded-over portion of tape 14 an ad hesive tape or the like which is indicated at 22. This is adhesively secured. as a't-24 and-itself'is provided with an adhesive'strip 26"which is 'formedtas apart thereof;
The tape 22 is also elongated and spoolable and maybe in thenature of Scotch-brand tape, so-called ,adhesive tapes, masking tapes, plastic, rubber, etc., and may if desired be treated at both sides with adhesive.
The unfolded portion of the tape 14 is then folded twice so that the same appears as in Fig. 4. The tape is folded over approximately to the point 28, and is then reversely folded once more to terminate in the portion thereof which is indicated at 30. This leaves a tape ready to be used which comprises a series of layers here indicated as A, B, C (which is the same as 22), D and E, and these respective identifications are also applied in Figs. 2 and 3.
It will be seen that the tape is applied to the insole by laying it along the required path as in Fig. 1 and applying either heat or pressure, or both, in order to accomplish the adhesive action of the adhesive tape portion 22 thereof. It will be seen that this adhesive tape portion is firmly cemented between folds B and fold D and it extends outwardly from between these folds in a tail or extending edge portion which is identified at F. The tape as described and as shown in Fig. 4 is rapidly laid down upon the insole along the path as shown in Fig. 1, with the bottom surface of the layer B (part of tape 14), cemented flatly to the insole at the inside aspect thereof as respects the rib, see Figs. 2 and 5 at 34.
As the tape is processed, the extending edge portion F of the adhesive tape 22, or D, is secured adhesively to the edge portion of the insole or adjacent thereto, and the fold at 16 is pressed down onto this adhesive tape. This ensures the fact that the fold 16 is brought down snugly onto the tape portion F and assumes the form shown in Fig. 2 which causes the entire sewing rib comprising layers A, B, C and D to pivot away from strip E into upstanding relation preparatory to the sewing operations to follow and which are well known in the art. The rib does not reach a vertical position but rises by itself to the more or less inclined position of Fig. 2 which is sufiicient for sewing the upper and the welt thereto. The cover 32 may be applied as usual but is not necessary to the invention, and it is to be noted that this cover has been omitted from the showing of Fig. 1 in order to expose the portion F of the rib thereof.
The usual canvas or duck has been omitted from the drawings and it is as a matter of fact unnecessary as the rib is already standing up and needs no additional reenforcement; The rib does not need any setting up operation and it will be noted that it is a very strong rib because it comprises four separate layers of material, A, B, 'C and D,' with the portions F'and E holding it in the position desired. The tape may be made as for instance in the Fig. 4-showing 'or'even in the Fig. 3 show ing, and then applied by automatic machineryaetc." The double fold on the tape at theputsideedge thereof acts as a buttress and strain is usually applied to the rib' in the process of shoe-making, this strain being usually applied in the direction of the arrow in Fig. 2. The double told at 16 acts as a pier at the base "of the rib and gives the rib additional strength, combatting the strain asindicated by the arrow in Fig. 2, but yet at the same time flexibility, in a longitudinal'direction of the shoe is maintained as the foot bends in wearing the shoe. This action is particularly-emphasized in Fig. 5 wherein the fold at'16 has been flattened by -a pressure roll squeezing' t-he fold down against the insole blank and forming a very strong base having great resistance to lateral pull or tension as abovedescribed.
Having thus described my invention and the advantages thereof, I do not wish to be limited to the details herein disclosed,- otherwise than as set forth in the claims,but what I claim is: 5
1. A sewing ribfor insoles'comprising a narrowtape longitudinally folded to form a double-over portion and a single portion, andadhesive tape adhesive on both sides secured to the doubled-over portion, said adhesive tape having anedgeportion' thereof extending therefrom past the fold of the doubled-over portion, the unfolded portion of the narrow tape being folded over upon the adhesive tape and adherent thereto and being re-entrantly folded in the opposite direction, the last fold "beingiree said layers and forming ,a fourthlayer, .oneiof the folds of the narrow tape including a portion to be applied directly-to the insole and the extending edge portion of the adhesive tape extending past one of the folds and also being adapted :to, be appliedgdirectly to the insole.
3. A sewing rib for insoles comprising a relatively narrow tape foldedlongitudinally at-least twice along spaced lines forming three layers, two of said layers having free edges overlapping and extending beyond the fold forming the layer having the other free edge and a fourth layer tucked in between two layers and being, separate therefrom but adhesive'ly secured thereto, said fourth layer having an extending lateral edge portion extending past both the overlapping free edge and the edge which is overlapped thereby, said tucked-in'laycr having both surfaces'thereof provided withpressure-sensitive adhesive material. 1
References Cited in the file of this patent UNITED STATES PATENTS Sherbrook ,June 26, 1956