US2672168A

US2672168A - Woven endless belt

Info

Publication number: US2672168A
Application number: US222773A
Authority: US
Inventors: Walters Gustav
Original assignee: Individual
Current assignee: Individual
Priority date: 1951-04-25
Filing date: 1951-04-25
Publication date: 1954-03-16
Anticipated expiration: 1971-03-16

Description

G. WALTERS WOVEN ENDLESS BELT March 16, 1954 Filed April 25, 1951 38 3 7 3b @@@Qww 3e 38 37 @@w@ %f G. WALTERS WOVEN ENDLESS BELT `March 16, 1954 2 Sheets-Sheet 2 Filed April 25, 1951 Patented Mar. 16, 1954 UNITED STATES PATENT OFFICE 2,672,168 WovEN NDLEss BELT Gustav Walters, Middletown, Conn. Application April 1951, Serial' No. 222,773

13 Claims.

This invention relates to improvements in woven-endless belts, and more particularly' to woven-endless belts to be used as belts ior pulleytravel mechanical purposes, such as drive belts, conveyor belts and abrasive belts, abrasive belts being those which have an abrasive such as rouge, emery etc. adhered thereto for polishing, abrading, etc.

In the usual way of making woven-endless belts for pulley-travel mechanical purposes, the longitudinal strands are endless but the transverse strands are non-endless, and therefore such belts do not have selvage side edges as woven, with the result that such edges tend to unravel and destroy the' side edge construction of the belt, in consequence of which such belts have to be thrown away due tothis edge destruction.

One object of this invention, therefore, is to provide an improved ywoven-endless, textile belt for pulley-travel mechanical uses, in which the non-selvage side edges thereof are of improved construction so as to give longer life to the edge portions of the belt, and at the same time to notv substantially interfere with the mechanical functioning action ofthe center or main or body por-v` tion of the' belt.

With the above and other objects in View as will appear to those skilled in theV art from the prese' ent disclosure, this invention includes all' features in said' disclosure which are novel' over the prior art'.

in the description and claims', various parts andsteps are identified by specific terms for convenience, but they are intendedr to bev as generic' in their application as the prior art permits.

In the accompanying drawings forming' part of the present disclosure, inv which certain ways of carrying out the invention are shown for illus-v trative purposes:

Fig. l is a perspectiveA View illustrating a woven-endlessV belt made' in accordance with the present invention and mounted on a pair of pulleys;v

Fig. 2v is an edge View in- Fig'; l;

Fig. 3 is a top plan view of Fig.v2`;

Fig. siv is an enlarged sectional view on line iL-4f ofFig. 2,"

Fig; 5 is' ay top" plan View similar to Fig. 3 of a woven-endless tubular fabric comprising aplurality of beltesections which are ultimately to be out into separa-te belt-sections or belts;

Fig. 6 is an enlarged schematic sectional View on line 6-S oi Fig. 2 illustratingl one weave construction;

Of the' belt illustrated Z Fig'. 7 is a schematic top plan view of the weave construction of Fig. 6;

Fig. 8 is a schematic top plan view similar to Fig. 7 of a inodiiied weave construction;

Fig. 9y is a schematic top plan view similar to Fig. d' of anotherV modified weave construction;

Fig. 10 is a schematic fragmental View similarv to the left-hand portion of Fig. 5, of another modied weave construction; Y

Fig; 11 is a schematic View similar to Fig'. 1'0 of still another modified weave construction;

Fig. 12 is a schematic view similar to Fig. 11 of still another modified weave construction;

Fig. 13 is a sectional View of a fragment of a belt showing the left body and edge-portions corresponding to Figs. 6, 10', 11 and 12;

Fig. 14 is a view similar to Fig. 13 of a modified construction of edge-portion;

Fig. l5 is a view similar to Fig. 14 of still another modied form of' edge construction;

Fig. 16 is a schematic View similar to the left end portion of Fig. 6 of a'- two-ply edge construction;

Fig. 17 is aschematic View similar to Fig. 16 of another two-ply edge construction;

Fig. 18 is a sectional view similar to Fig. 13 of a two-ply edge construction corresponding to' Figs'. 16 and 17;

Fig. 19v is a schematic View similar to Fig. 16 of'a three-ply edge construction; t

Fig. 2O is a schematic view similar to Fig. 19 of another three-ply edge construction; and

Fig. 21 is a sec-tional View similar to Fig. 18 of a three-ply edge construction corresponding to Figs. 19 and 20.

Referring to Figs. 1 to 7 oi the drawings showing the form of invention illustrated therein, the belt Bil is of woven-endless construction having aA central-v or mainor body' portion 3l and two opposite edge-portions 32. The body portion of the belt can be said to bethe belt proper which performs the mechanical functions for which the belt isV intended, and the edge-portions are for the purpose of securing a satisfactory' locking of the longitudinal edge-strands against unraveling.

In the weaving of this belt, as shown in Fig 5, a woveir-endlessy fabric 33 is' Woven withy alternate body portions 3i, and thinner portions 32d from which the edge-portions 32 are formed. Each beltunit or belt 36' is made by cutting longitudinally through the thin portionsV 32ak as indicated' by the broken lines-of-cut- 34, to form the edge-portions-SZ of belt-36. Ordinarily', the' edgeportions 32' of" av belt will# be given somev further lj treatment to increase their resistance to unraveling, before such a belt is to be actually employed for a belt use. And the body portion of the belt may also be given further treatment before being used as a belt, all as will be more fully hereinafter set forth.

Referring to Fig. 6 which is an enlarged schematic cross-sectional view on line 6-6 of Fig. 2, the body-portion 3l of the belt 36 and the two edge-portions 32 thereof are all of single-ply construction in which the longitudinal body-strands 35 of the body-portion 3i are endless longitudinal strands `which are also weft strands, and the longitudinal edge-strands 36 of the edge-portions 32 are also endless longitudinal or weft strands, the endless

longitudinal strands

35 and 36 being woven with non-endless transverse or warp strands or sets of strands 3l and 38 to form the single-ply fabric 33, and the belts Sil which are cut from the fabric 33. The transverse strands extend integrally continuously across the body portion and both edge portions.

In the claims, the term endless longitudinal or weft strand or strands is used in its sense as understood by those skilled in the art, that is, that although a weft strand is ordinarily of indefinitely great length except when it breaks during Weaving or the weaving of a different size of weft strand is to be started, it is not necessary to have it of indefinitely great length if the picks constituting a weft strand or strands are constituted of weft strands, a majority of which are long enough to form at least three successive picks of the helix in which the weft strand extends in weaving a tubular fabric, so that the tubular fabric will have ample strength along the locations of the beginning and end of the picks.

It will be noted from Figs. 6 and '.7, that the endless longitudinal weft edge-strands 35 and the non-endless transverse warp strands 3l and 3S are shown as of similar size, and much smaller than the longitudinal body-strands 35, whereby the opposite edge-portions 32 of the belt 36 are very flexible and can be rendered non-raveling by treating the same with rubber and/ or as otherwise hereinafter set forth.

Instead of making a belt such as 30 hereinbefore set forth, a belt 39 may be made as illustrated in plan View in Fig. 8, which diifers from the belt 36 illustrated in Figs. 6 and 7 in that, instead of having the non-endless transverse warp strands arranged as singles, they are arranged as pairs 43 and il in conjunction with the endless

longitudinal weft strands

35 and 36 as in Figs. 6 and 7.

Or, a belt such as 42 as shown in plan view in Fig. 9 can similarly have pairs of transverse strands 43 and lid woven with the

longitudinal strands

35 and 36 by having them extend as pairs in woven relation with the body-strands 35, and then each pair of

strands

53, 44 can change to be woven as singles 43a and ib and 44a and lieb with the edge-strands 35, to thus bring about a better locking action with the edge strands 36 than is accomplished in the construction of Fig. 8.

The form of the belt construction 45 illustrated in Fig. l is similar to that illustrated in Fig. 6, except that in the belt construction 45, the body portion E5 contains pairs or shed-groups of longitudinal body strands All in each shed area i8 formed by the sets of transverse strands 59 and G, while the longitudinal edge strands 5l of each edge portion 52 are arranged as singles in eah shed area, as in the previously described constructions.

lil

In the belt construction 53 illustrated in Fig. 11, the longitudinal strands are individually all of the same size, but in the body portion 54, the longitudinal strands 55 are arranged in shedgroups of four in each shed area 56 formed by the sets of transverse strands 5l and 58, while the longitudinal edge strands 5s of each edge portion 6l are arranged as singles in each shed area formed by the transverse strands 5l and 58 in each edge portion 6 l.

In the form of the construction illustrated in Fig. l2, the belt 62 is shown as having groups of six transverse strands S3, 66, 65, S5, 6l and `68, each group forming a repeat-group in an overthree-under-three twill weave construction with the longitudinal strands 69 in the body-portion it, and then these six

strands

63, 64, 65, 66, 'G7 and 68 are woven with the longitudinal strands 'El in the edge-portion l2 in an over-one-underone weave, similar to the mode of weaving of the edge-portions illustrated in Figs. 6 and 7.

In the case of all of the foregoing described weave constructions set forth in Figs. 6 to 12 inclusive, the average shed area of the longitudinal strands of the edge-portions is considerably smaller than the average shed area of the longitudinal strands in the body-portion. Therefore, since the transverse strands are the same size throughout the body-portion and edge-portions, each edge-portion will be substantially thinner and more flexible than the body-portion. And by cutting each of the edge-portions 13 of the belt "ad relatively narrow as illustrated in Fig. 13, and treating each of them, and if desired also treating the entire belt 'M including the bodyportion i5, with rubber or other elastomer and vulcanizing, when the edge-portions 13 rub against flanges of pulleys or the like, they will temporarily flex out of the way and thus resist tendency to unravel the longitudinal strands thereof, and thus maintain the belt in serviceable condition.

Or, instead of making the edge-portions as illustrated in Fig. 13, they can be made as in Fig. 14 in which the belt 16 has a body-portion 'VI and edge-portions 18, each edge-portion 'I8 being cut wider than in the case of the edgeportion illustrated in Fig. 13, and folded over once to provide two layers or folds which are sewed together by stitching 19 to provide a non-reveling edge-portion 18. If desired, each edge-portion 'I6 can be treated with rubber either before or after sewing with the stitching 19.

In the form of the belt illustrated in Fig. 15, the body-portion 8l is similar to that heretofore described, and each edge-portion 82 is cut wider than is illustrated in the belts of Figs. 13 and 14, and is folded over twice to provide three layers or folds as illustrated, which are sewed together by the stitching 83. The body-portion 8| and/or the edge-portions 82 can be treated with rubber, or otherwise, as herein set forth.

In the form of belt construction 34 illustrated in Fig. 16, the body-portion 85 is single-ply and has relatively large-size longitudinal weft strands 86 woven with groups of the

transverse Warp strands

8l, 88, 89 and 93, and each edge-portion 9i consists of two

plies

92 and 93, the ply 92 having longitudinal strands 94 interwoven with the

transverse strands

81 and 88, and the ply 93 having longitudinal strands woven with the

transverse strands

89 and 90.

The beltconstruction 93 illustrated in Fig. 17 is substantially the same as the belt construction illustrated in Fig. 16 with the exception that assale@ the additional

transverse warp strands

91 and 98 are employed to act as binder-warp strands to bind the upper and lower plies 99 and |00 of each edge-portion lill` together, andalso extend across the body-portion |02 of this belt construction. Strands such as the

strands

81, 88, 89 and 90 of Fig. 16, and

strands

91 and 98 of Fig- 17, are known to those skilled in the art as Warps or warp strands. But where warp strands or portions oiwarp strands such as 91 and 98 bind together two or more plies of Woven material such las plies 99 and |00 of the edge portion |0| of Fig. 17, they are more particularly known as binder warps or binder-warp strands. And where itis desired to distinguish strands such as 81 to 90 of Fig. 16, and the portions of strands such as 91 and 98 which extend across the body-portion |02 of Fig. 17, which do not bind two or more plies together, from binder-warp strands, the former are-'called ground wal-ps or ground-Warp strands.

By proportioning the size of the longitudinal strands in the edge-portions as compared to the size of the longitudinal strands in the body-portions of the constructions of Figs. 16 and 1'7, it is possible to have the two edge plies provide a thickness which will not be more than, but will be less than or substantially the same as, the body-portion. Thus, this is illustrated in Fig. 18 in which a belt construction |03 has the bodyportion |04, and the two edge layers or pliesV |05 and |06 of the edge-portion |01, and by cementing and/or sewing and/or binder-strand weaving the edge layers |05 and |536 together in a way previously described in connection With other constructions, each edge-portion |01 will be suitably protected against unraveling.

The belt |00 shown in Fig. 19 is very similar to the belt 84 shown in Fig. 16, except that the belt |08 has each of its edge-portions |09 formed of three plies |10, and H2, instead of two plies as illustrated in the case oi the belt 84 of Fig. 16. And', accordingly, there will be six sets of transverse strands |13, Ht, H5, H6, ||1 and ||8 which extend across each edge-portion |09 and the body-portion H9.

By proportioning the size of the average shed area of the longitudinal strands in the edge portions` as compared to the size of the average shed area of the longitudinal strands in the body-portion of the, constructions of Figs. 19 and 20, it is, possible to have the three edge plies provide a thickness which will not be more than, but will be, the same as or less than, the body portion. Thus, this is illustrated in Fig. 21 in which a belt |21 has the body-portion |28, andA has an edge-portion |29 made up of the three layers or plies |30, I3 |v and |32, each edge-portion |29 and body-portion I 28 being preferably of the same thickness, as illustrated.

In accordance with the present invention, each edge-portion has one or more woven plies, each of which plies is substantially thinner than the woven body portion in order to provide adequate locking against unraveling. Another way of dening this characteristic is to say that the average shed-area of the longitudinal strands of each edge-portion, is substantially less than the average shed-area of the longitudinal strands in the body-portion of the belt. And the edge-portions are preferably treated with elastic cementitious material, preferably rubber or other rubber-likeL material or elastomer and/'or stitching, in order to further inhibit or prevent the unraveling action of the edge. portions. And it is more advantageous to have the average shed-areay of the 1on-` gitudinal strands of each edge-portion not more than half that of the average shed-area of the longitudinal strands of the body-portion, and it is still more advantageous to have the average shed-area of the longitudinal strands of each edge-portion not. more than one-fourth the aver age shed-area of the longitudinal strands of the body-portion, in order to give maximum locking or non-raveling effe-ct. And where there are also two or more plies to the edge-portion, this gives locking action against unraveling, as a. result of the cementing of the layers or plies together and/or the. action of transverse binder-warp strands when used, or sewing the plies together when that is done. Also, it is preferable to have the transverse strands in the edge-portions ex tending in an over-one-under-one weave for more effective locking action against unraveling. Belts in accordance with the present invention may have the longitudinal and/or transverse strands made of any suitable material, such as cotton, nylon, etc.

My application Serial Number 222,772 led April 25, 1951, describes means and method suitable for making woven-endless fabric from which belts in accordance with this invention may be made.

The invention may be carried out in other specific ways than those herein set forth without departing from the spirit and essential characteristics of the invention, and the present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, and all changes coming within the meaning and equivalency range of the appended claims are intended to be embraced therein.

I claim:

l. A woven-endless pulley-travel' belt having a woven-endless single-ply body portion and two Woven-endless edge portions, each edge portion being adjacent to and transversely beyond a side edge of the body portion in a direction away from the body portion; the body portion and edge portions each having endless longitudinal weft strands woven with non-endless transverse warp strands, the transverse warp strands extending continuously transversely across the body portion and across and beyond each side edge ofv the body portion in a direction away from the body portion and connecting the body portion and edge portions together; each edge portion having at least one woven ply; and the average shed-area of the longitudinal weft strands of each edge portion being substantially less than the average shed-area of the longitudinal weft strands of the body portion.

2. A woven-endless pulley-travel belt having a Woven-endless single-ply body portion and two woven-endless edge portions, each edge portion being adjacent to and transversely beyond a side edge of the body portion in a direction away from the body portion; the body portion and edge portions each having endless longitudinal weft strands woven with noi1endless transverse` warp strands, the transverse warp strands extending continuously transversely across thev body portion and across and beyond each side edge of the body portion in` a direction away from the body portion and connecting the body portion and edge portions together; each edge portion having at least one woven ply; and the average shedarea of the longitudinal weft strands of each edge portion being not more than half the average shed-area of the longitudinal weft strands of the body portion.

3. A woven-endless pulley-travel belt having a woven-endless singly-ply body portion and two woven-endless edge portions, each edge portion being adjacent to and transversely beyond a side edge of the body portion in a direction away from the body portion; the body portion and edge portions each having endless longitudinal weft strands Woven with non-endless transverse warp strands, the transverse warp strands extending continuously transversely across the body portion and across and beyond each side edge of the body portion in a direction away from the body portion and connecting the body portion and edge portions together; each edge portion having at least one woven ply; and the average shed-area of the longitudinal weft strands of each edge portion being not more than one-fourth the average shed-area of the longitudinal weft strands of the body portion.

' 4. A woven-endless pulley-travel belt having a woven-endless single-ply body portion and two woven-endless edge portions, each edge portion being adjacent to and transversely beyond a side edge of the body portion in a direction away from the body portion; the body portion and edge portions each having endless longitudinal weft strands Woven with non-endless transvsrse warp strands, the transverse warp tending continuously transversely across the body portion and across and beyond each side edge of the body portion in a direction away from the body portion and connecting the body portion and edge portions together; each edge portion having only a single woven ply; and the average shed-area of the longitudinal weft strands of each edge portion being substantially less than the average shed-area of the longitudinal weft strands of the body portion.

5. A woven-endless pulley-travel belt having a woven-endless single-ply body portion and two woven-endless edge portions, each edge portion being adjacent to and transversely beyond a side edge of the body portion in a direction away from the body portion; the body portion and edge portions each having endless longitudinal weft strands woven with non-endless transverse warp strands, the transverse warp strands extending continuously transversely across the body portion and across and beyond each side edge of the body portion in a direction away from the body portion and connecting the body portion and edge portions together; each edge portion having only a single woven ply; and the average shed-area of the longitudinal weit strands of each edge portion being substantially less than the average shed-area of the longitudinal weft strands of the body portion, and each of a substantial number of the sheds of longitudinal weft strands oi the body portion having a plurality of longitudinal weft strands therein.

6. A woven-endless pulley-travel belt having a woven-endless single-ply body portion and two woven-endless edge portions, each edge portion being adjacent to and transversely beyond a side edge of the body portion in a direction away from the body portion; the body portion and edge portions each having endless longitudinal strands eX- weft strands woven with non-endless transverse warp strands, the transverse warp strands extending continuously transversely across the body portion and across and beyond each side edge of the body portion in a direction away from the body portion and connecting the body portion and edge portions together; each edge portion having at least one woven ply; and the average shed-area of the longitudinal weit strands of each edge portion being substantially less than the average shed-area of the longitudinal weft strands of the body portion, and each of a substantial number of the sheds of longitudinal weft strands of the body portion having a plurality of longitudinal weft strands therein.

7. A woven-endless pulley-travel belt having a woven-endless single-ply body portion and two woven-endless edge portions, each edge portion being adjacent to and transversely beyond a side edge of the body portion in a direction away from the body portion; the body portion and edge portions each having endless longitudinal weft strands woven with non-endless transverse warp strands, the transverse warp strands extending continuously transversely across the body portion and across and beyond each side edge of the body portion in a direction away from the body portion and connecting the body portion and edge portions together; each edge portion having a woven ply, and said woven ply of each edge portion being folded, and the folds being secured together, and the average shedarea of the longitudinal wei't strands of each edge portion being substantially less than the average shed-area of the longitudinal weft strands of the body portion.

8. A woven-endless pulley-travel belt having a woven-endless single-ply body portion and two wovenendless edge portions, each edge portion being adjacent to and transversely beyond a side edge of the body portion in a direction away from the body portion; the body portion and edge portions each having endless longitudinal weit strands woven with non-endless transverse warp strands, the transverse warp strands eX- tending continuously transversely across the body portion and across and beyond each side edge of the body portion in a direction away from the body portion and connecting the body portion and edge portions together; each edge portion having only a single woven ply, and said woven ply of each edge portion being folded, and the folds being secured together, and the average shed-area of the longitudinal weft strands of each edge portion being substantially less than the average shed-area of the longitudinal weit strands of the body portion.

9. A woven-endless pulley-travel belt having a woven-endless single-ply body portion and two woven-endless edge portions, each edge portion being adjacent to and transversely beyond a side edge of the body portion in a direction away from the body portion; the body portion and edge portions each having endless longitudinal weft strands woven with non-endless transverse warp strands, the transverse warp strands extending continuously transversely across the body portion and across and beyond each side edge of the body portion in a direction away from the body portion and connecting the body portion and edge portions together; each edge portion having only a single woven ply, and said woven ply of each edge portion lying in a single general plane generally parallel to the general plane of the body portion; and the average shed-area of the longitudinal weft strands of each edge portion being substantially less than the average shed-area of the longitudinal weft strands of the body portion.

l0. A woven-endless pulley-travel belt having a woven-endless single-ply body portion and two woven-endless edge portions, each edge portion being adjacent to and transversely beyond a side edge of the body portion in a direction away from the body portion; the body portion and edge portions each having endless longitudinal weft strands Woven with non-endless transverse warp strands, the transverse warp strands extending continuously transversely across the body portion and across and beyond each side edge of the body portion in a direction away from the body portion and connecting the body portion and edge portions together; each edge portion having only a single Woven ply, and said Woven ply of each edge portion lying in a single general plane generally parallel to the general plane of the body portion, and said Woven ply of each edge portion containing rubber-like material; and the average shed-area of the longitudinal weft strands of each edge portion being substantially less than the average shed-area of the longitudinal weft strands of the body portion.

l1. A woven-endless pulley-travel belt having a Woven-endless single-ply body portion and two woven-endless edge portions, each edge portion being adjacent to and transversely beyond a side edge of the body portion in a direction away from the body portion; the body portion and edge portions each having endless longitudinal weft strands Woven with non-endless transverse warp strands, the transverse warp strands extending continuously transversely across the body portion and across and beyond each side edge of the body portion in a direction away from the body portion and connecting the body portion and edge portions together; each edge portion having a plurality of woven plies, and said woven plies of each edge portion being secured together; and the average shed-area of the longitudinal weft strands of each edge portion being substantially less than the average shed-area of the longitudinal weit strands of the body portion.

12. A woven-endless pulley-travel belt having a woven-endless single-ply body portion and two Woven-endless edge portions, each edge portion being adjacent to and transversely beyond a side edge of the body portion in a direction away from the body portion; the body portion and edge portions each having endless longitudinal weft strands Woven with non-endless transverse Warp strands, the transverse Warp strands extending continuously transversely across the body portion and across and beyond each side edge of the body portion in a direction away from the body portion and connecting the body portion and edge portions together; each edge portion having a plurality of woven plies, and with said woven plies of each edge portion each lying in a single general plane generally parallel to one another and to the general plane oi the body portion, and said Woven plies of each edge portion being se- Culd together; and the average shed-area oi' the longitudinal weft strands of each edge portion being substantially less than the average shedarea of the longitudinal weft strands of the body portion.

13. A woven-endless pulley-travel belt having a Woven-endless single-ply body portion and two Woven-endless edge portions, each edge portion 'being adjacent to and transversely beyond a side edge of the body portion in a direction away from the body portion; the body portion and edge portions each having endless longitudinal weit strands woven with non-endless transverse warp strands, the transverse warp strands extending continuously transversely across the body portion and across and beyond each side edge of the body portion in a direction away from the body portion and connecting the body portion and edge portions together; each edge portion having a plurality of woven plies, and with said woven plies of each edge portion each lying in a single general plane generally parallel to one another and to the general plane of the body portion, and each of said woven plies of each edge portion containing rubber-like material; and the average shed-area of the longitudinal weft strands of each edge portion being substantially less than the average shed-area of the longitudinal weft strands of the body portion.

GUSTAV WALTERS.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 505,294 Lyall Sept. 19, 1893 708,907 McLean Sept. 9, 1902 824,226 AlVord June 26, 1906 848,121 Moore Mar. 26, 1907 1,034,063 Bentley July 30, 1912 1,895,689 Schlegel Jan. 31, 1933 2,391,674 Brown et al Dec. 25, 1945 FOREIGN PATENTS Number Country Date 6,475 Great Britain of 1898 429,743 Great Britain June 5, 1935