US1915571A

US1915571A - Power transmitting belt

Info

Publication number: US1915571A
Application number: US218552A
Authority: US
Inventors: Gardere Pierre Leonce
Original assignee: Individual
Current assignee: Individual
Priority date: 1926-09-20
Filing date: 1927-09-09
Publication date: 1933-06-27
Anticipated expiration: 1950-06-27

Description

June 27, 1933. k P. L. GARDERE 3 5 1 PQYQ'ER TRANSMITTING BELT Filed Sept. 9. 1927 w rill * siren PIER-BE LEONGE GABDERE, OF BORDEAUX, FRANCE FOVIEE TRANSMITTING BELT Application filed September 9, 1927, fierial No. 218,552, and in France September 20, 1926.

The invention will be clearly understood with reference to theappended drawing, which shows, by way of example, various embodiments of the invention.

Fig. 1 shows a belt according to vention. I V

Fig. 9. is a section on the line B-B of Fig. 1.

Fig. 3 shows a modification in which the desigii formed by the lacing comprises a row of chevrons. I 7

Figs; 4 to 8 are dia rammatic views showa. in-

:2 ing various combinations which may be obtained with inclin d lines and chevrons.

Tn the constructional. form shown inFigs. 1 and 2, the belt 1, which may have any suitable width and thickness and mayconsist of leather or like materialof which belts are nsu lly manufactured, is provided with two parallel rows of apertures 2, 2", 2*, etc, 3, 8, 3, etc, which are either circular holes or preferably elongated slots and are equally spaced apart. In the said holes or slots are laced continuous strips l, 5, etc, of leather, hemp or any other suitable material.

The width of the

strips

4 and 5 is substantially equal to the length of the slots 2 and 3, and the thickness is equal to or somewhat above the width of the said slots. The lacing is performed in the following manner. The strip 4 is inserted from back to front through the slot 2 (Fig. 1) and then from front to back through the slot 3 then from back to front through the slot 2 and so on; the second strip 4: is laced in a similar manner through the slots 3, 2 3 and so on.

It will be observed at the lower part of Fig. lthat the lacing of the said strips will form on the belt two sets of lines which are of this row of slots 1 form rows of slots 7 0 each slot being on the same transverse axis as the corresponding slot 6, the width of the slots 7 being practically equal to the thick- 7 ness of a strip. The figure clearly shows the" manner in which the lacing the strips 8 and 9 is effected in this case.

Fig. l illustrates a modification of the lacing shown in Fig. 1, in which only a single strip 10 is utilized, and herein the spacing between the lines of the design formed by the lacing is greater than in the case of Fig. 1, assuming that the inclination of said lines upon the axis of the belt is the same.

Fig. 5 shows a belt comprising the combination of two lacings such as shown in Fig. 1, the design consisting of two sets of lines which are inversely inclined upon'the axis of the belt.

Fig. 6 shows the combination of the lacing shown in Fig. 1, formed at the central part of the belt, with two sets of chevrons of the type represented in Fig. 3.

Fig. 7 shows a lacing which comprises two sets of chevrons whose vertices are directed in a direction and a set of chevrons at the central part, whose vertices have the contrary direction.

Fig. 8 is a modification of Fig. 1 in which the middle axis (re-a of the lacing of the strip 5 does not coincide with the middle axis b o of the lacing of the strip 4. In this particular case, the width and the spacing of the strips may be such that the edges of the said strips are in contact.

The arrangement of belting herein specilied offers the following advantages:

Due to the inclined disposition of the lacing with respect to the belt axis, the belt will adhere more strongly to the pulleys, and the slipping of the belt will thus be reduced. The adherence to the pulley will be uniform throughout the width of the belt. Moreover, the belt will have no back side and either face may be mounted in contact with the pulleys the thickness of the strips, which is comparatively small, whereas the width of the apertures in the known belts, provided-with lacings extending longitudinally, must be substantially equal to the width of the strips.

By the use of a lacing which forms a design consisting of lines which are inversely inclined, the belt will have a tendency to remain in the proper direction of motion. Obviously, the constructional forms shown in the drawing are susceptible of numerous modifications without departing from the principle of the invention. For instance, I may superpose and connect together acertain number of belts of the kind described, r may combine a belt of this kind with an ordinary smooth belt.

: Having now described my invention, what I claim as new and desire to secure by Letters Patent is: Q

1. A power transmitting belt comprising a tension resisting core pierced with apertures disposedin at least two longitudinal rows, said aperturesbeing symmetrically disposed with respect to the axis of that part of the belt com rised between said two longitudinal rows an at least two strips of yielding material laced entirely around the belt through said apertures, the lacing beingperformed by continuously winding in an helical manner and in the same direction, each of said strips 40 y w r the grain-side isat the exterior throughout the belt and on both sides thereof.

2. A power transmitting belt of the type comprising a tension resisting core having at least two longitudinal rows of apertures and at least one strip of yielding material laced entirely around the belt through said apertures, whereinthe core is made of a single strap and the strip coiled around the longitudinal portion of core located between said rows of apertures bybeing alternately passed from one row to the other and then back to the first, so that the same face of the strip, either the flesh side or the grain-side is at the exterior throughout the belt and on both sides thereof.

3. A power transmitting belt comprising a tension resisting core having at least three longitudinal rows of apertures, the width of the apertures of the median row being equal to the sum of the widths of the sidelong apertures, at least two strips of yielding material laced entirely around the belt through said apertures, one of said strips oeing wound in an helical manner around the longitudinal portion of core limited by the median row and one sidelong row, and the other wound around the other longitudinal portion defined by the mediairrow and the other sidelong PIERRE LEoNoE GARDERE.