US1370597A

US1370597A - Method and apparatus for making belts

Info

Publication number: US1370597A
Authority: US
Publication date: 1921-03-08
Anticipated expiration: 1938-03-08

Description

H. M. LAMBERT.

METHOD AND APPARATUS FOR MAKING BELTS.

APPLICATloN FILED DEC. 24, V919! 1,370,597, Patented Mar. 8, 1921.

I INVENTOR g@ I amberb.

UNITED srA'ilsgsmgPATENr OFFICE.

HENRY M. LAMBERT, or'roRTLAND, OREGON.

METHOD yAlan APPARATUS'FQR MAKING BELTS.

n To all whom t may concern Be it known -that l, a citizen oftheUnited States,at present residing at Portland, inthe county .of yMultnomah and State of Oregon, have invented anew andlmproved Method and Apparatus for Making Belts, yof which'the following is a'specication. f A

, My invention relates tothe art of manufacturing vstretchless belts and it particu y larly has for its yobject to "provide a conven-A ient and efe'ct-ive methodand apparatus for their approximate limit. of elongation, Whilekk being laid and vulcanizing the' cords and manufacturingy belts, which belts are eonl structed of alternate. layers of rubberizedy fabric and cords. f

' In carrying out my invention, I simultaneously'lay between spaced'strips o"i".i=ul r beiized fabric, a layer of cordsextendingin parallelism, the cords being `either individual or held together by transversely woven lightcords or strands, placing the cords under such tension as to stretch the same `to fabric strips together, While under tension.y In its more detailed nature, theinvention includes those novelrsteps of manufacture and the novel detailsof construction and ar- 5 rangement of parts of the apparatus employed in carrying out the invention, all of which Will be first fully described, then spe cically pointed out in thel appended claims, reference being had to the accompanying drawings, in' Which z Figure 1 is a diagrammatic longitudinalv section illustrating anarrangement of apparatus ada'ptedtothe performance of my method.

Fig. 2 is a detail view of a portion of the y threads.

reference indicate like parts in all of the In the drawingsinl Which like numerals of figures, l represents the vulcanizing press which may be of the usual construction embodying a baseer support thatl carries a suitable bed 2 to coperate With the pressing head 3, the latter being designed to be pressed down toward the bed 2 by any atr 5 to provide steam jackets, whereby the suitable mechanism, as for instance, cam levers 4.

The bed 2 andhead 3 may befchambered i i Specification of Letters Patent.

HENRY M. LAMBnnTg,

tlemperatureof thefparts maybe maintained for vulcanizing purposes. i

6. and l7 designate the rolls carrying rubberized fabric strips 8. 9 indicates an idler designates the drum or reel from which the cords are taken. i

1 l y y ratented.i\ia1.s, 1921.. Application ined December 24,1919. seriaiNo. 347,093. f l i n n roller over which the lower strips pass. 10

VIt should be understood that 'when the 1 cords yare heldl together by' transversely woven threads, one reel 10 issuflicient, when the 'cords are laid individually, a separate reel'for each kstrand ofcordniay belemployed. The reels lO'carrying the cords are provided With suitable tension devices 11, whereby the cords may be yheld under maximum tensioin'while beingflaid. 12 designates the cords and 13 the transyverse threads holding the cords together vides for laying the fabric layers 8 with the cords 12 kbetween them and simultaneously Winding the saine on the take-up reel 14. y

By adjustingy the tension device 11, the

drag on the reel 10 may be regulated so as to place the cords 12 under a stretch approxif mating their limitof elongation. l

The head 3L is then lowered and the section of belting contained between the head 3 and bed 2 is vulcanized` after which the head 3 is raised, in any suitable manner, as for instance by springs 16, and the vulcanized section of belt Wound on the reel 14,

f after which the next section is vulcanized in the same manner and so on until the desired y lengtho'f belt has been produced.

` As the chief strength ofthe belt is ob tained by use of the cords and as the cords and fabric strips are vulcanized togetherV its longitudinal direction but, of course, the degree of tension applied to the fabric strips 8 need only be suiicient to take up the slacl; in such strips during the laying process.

While I have. shown an apparatus and described a process of manufacture producing a belt with but a single layer of cords, it is quite obvious that the number of cord layers and fabric strips may be increased as desired in order to make a belt of the proper strength and size.

From the foregoing description taken in connection with the accompanying drawings, it is thought the invention will be clear to those skilled in the art and l c' e it un derstood that changes in the dot s nmy be made Without departing from the spirit of the invention or the scope ef the claims.

1. rlhe method of manufacturing belts which consists in taking alternate la r rubberized fabric and cords, laying laye; of cords between opposite la rs oi fabric strips and stretching the cords to their approximate limit of elongation, While being laid, and vulcanizing the whoie int-o a unitary mass, While said cords are held stretched.

2. The method of manufacturing belts which consists in placing on a layer of rnbberized fabric a layer of cords consisting of a plurality of strands laid side by side in parallelism, placing over said cords another layer of rubberized fabric, stretchin said cords to their approximate limit of e engation, holding the same stretched and vulcanizing the mass, while the cords are held stretched whereby, through the process of vulcanizing the parts, the parts Will be united in an individual structure and the cords maintained in their stretched condition.

3. An apparatus for manufacturing belts comprising a Vulcanizing press, a take-up reel, a pair of feed reels adapted to contain strips of fabric and a third feed reel adapted te centaiu cord strands, said reels being arranged to deliver the fabric and cord in alternate layers to the vulcanizing press, the

said take-up reel being arranged to receive f the combined layers of fabric and cord from the Y'ulcani'lzing,r press, means for turning the talrefup reel, and means for retarding the feed of the cord carrying reel, whereby to place the cord under tension, as the layers are passed through the vulcanizing press, whereby the mass may be vulcanized into a unitary structure, while the cord is held under tension, substantially as shown and described.

HENRY M. LAMBERT.