US26603A

US26603A - Apparatus for forming rubber

Info

Publication number: US26603A
Authority: US
Publication date: 1859-12-27
Anticipated expiration: 1876-12-27

Description

UNITED sTATEsPATENr OFFICE.

THOMAS J. MAYALL, `or noXBuRY, MAssAoHUsE'r'rs.

APPARATUS ron romaine RUBBER BELTING. l

y Specification of Letters `Eatent No.` 26,608, dated December `21"?, 11859. .i

To all whom 'it may concern: L

Be it known that I, THOMAS J. `Mmmm., of Roxbury, in the .county of Norfolk and State of Massachusetts, have invented certain new and useful Improvements in Machines for Makingv Rubber or Gutta-Percha Belting or Banding, and that `the following description, taken in connection with the accompanying drawings hereinafter referred to, forms a full and exact specification of the same, wherein I have set fo-rth the nature and principles of my said improvements by which my invention may be distinguished from all others of a similar class, together with such parts as I claim and desire to have secured to me by Letters Patent.

The figures of the accompanying plate of drawings, represent my improvements.

Figure l is a plan or top view of my new machine. Fig. 2 is a central, longitudinal vertical section of the same. Figs. 3, 4, and 5 are transverse vertical sections taken respectively in the plane of the lines A, B, C, D, E, F.

In the manufacture of the ordinary rubber or gutta percha belting or bandingby hand, a sheet of rubber or gutta percha is first folded over the fabric that forms the body of the belt, after the inner and outer sheets have been cut to the required widths. But this mode occupies a great deal ofv time and requires a considerable skill on the `part of the operatives. Machines have also been devised for accomplishing this result, but have not, previous to my invention, beensuccessful in producing a perfect belt or band with rapidity and accuracy. By my invention the folding of the outer sheet over the body or inner fabric of the belt or band and the forming of a true and even joint or seam is accomplished accurately and with despatch by my machine, as is also the cutting of the outer and inner sheets into the desired strips for forming belts or bands of any required width. y

t a a in the drawings, represent the supporting framework of the machine. The sheet of wide rubber or gutta percha that is to form the outside Z2 b b of the beltis wound either coated with cement or in a sticky condition on one surface, together with cloth c c c, to prevent the adhesionof the surfaces upon a supply roll d, as is the case also in making belting by hand, and fedalongto twoy sets of revolving circular cutters e c, e c, which cut off from the wide sheet the neces- `being susceptibleof lateral adjustmentlon sary width to form theoutsidegof .the` belt, these cutters being `susceptible `:of ilateral ad` justmcnts `ontheir shafts f f, soithatwany de?. i sired widthof strip-canbecutiof. The@ L: maining portion of `the `wide. sheet is wtnind` up as fast as the strip .iscutoif zuponja ,irollerjf i 3 g together .witha sheet1ofclothliJ supplied byarolleri. y i 7e is a roller upon whichis wound the sheet `65 of rubber or gutta perchaofwhichthe inner i n. portion or body ofthe belt, is t0 becomposed, alternating with a sheet of cloth Z so 1 as to prevent the layersfrom; stickingto]` i gether,the cloth being supplied from a roll m and fed along to two sets of revolving ciri cular cutters It n n n, which cut off thexde`- Y sired width of stripforthe body of the belt,

their shafts o o. The remaining portionyof y this sheet i,s thelfwound `upon a roll `pto-.1 gether. with cloth g. 'Ihe` stripsyto forint inner and -i--outer' "portions of the fbelt`,. being thus cut off are then fed` over the rolls 1U, the outside strip being the lower, and thence `1i` between two rollers `s s, which `unite the two l strips and cause them to adhere.; Thesheet` thus formed of the twostripsthen` passes `i between two rollers u and.)11,--Vthelowenkone c; Y V

having cams w lw, ,while the iupperjne w@ works between thecams uponthe upper sur;` f face of the belt. By these` rollers u and/'v the f belt is turned/upgintofai gutter.. shape as"` "j shown in Figwgandfthencepasses to a roller@ l a2, having tw tapering `surfaces and athin: l circular disk y, the""tapering surfacsof the" i roller serving to` complete the overlapping or covering of the inner stripmy theouter y one. The edges-arethen;broughtevenlyjtof i gether so as toform `a trueland evenyjointl and Aat the same time theibeltgis formed, by being drawn down, or `cramped partly y around therpiphery ofa roller ,the belt. i y being passed down in `nearly a vertical di` *y rection and afterward passing between two .100 pressure rollers a a. "This" mode of draw-` ing the belt, brings theedges ofthe lap or l y 1 covering to a i close, weven joint, with` `the y. greatest accuracy. `The belt being thusrcom-` i pleted is then wound with a `sheet or stripjof flexible metal f between its layers, to give `it i. a smoothrsurface,upon1a receiving roll, gf "l upon which it is thenvulcanized, which icolnpletes the operation. "l" 1 Having thus described my improvements, I shall statemy claim as follows: 1

What I claim as my inventionand to have secured to me by Letters Patent, 1s-

1. The use of the two rollers u and o acting together so as to form the belt into a gutter shape, whereby the first step in the process of folding the outside sheet or covering of rubber or gutta percha over the body or inner fabric ofthe belt or band is effected, as set forth.

2. The roller'm having two tapering surfaces and a central disk, whereby the overlapping of the covering or outer sheet over the inner fabric is completed, and the edges of the outer sheet or covering brought to a true and even line before being united.

3. Bringing the two edges of the outer sheet or covering evenly together so as to form a true and perfect joint and complete the formation of the belt or band, by the employment of two or more rollers, arranged in relation to each other, so that the said belt or band shall be drawn partially around the periphery of either or all the said rollers, substantially in the manner as set forth.

4. In combination with the machinery for forming the belt or band I claim the devices for cutting both the outer and inner sheets into strips of any desired width, as described.

W THOS. J. MAYALL.

Witnesses:

JOSEPH GAVETT, ALBERT W. BROWN.