USRE5903E - Liveius hull - Google Patents

Description

elevation, Fig. 3 a side elevation, and Fig. l

vof said HULL, do hereby declare the saine :to

UNITED STATES:

PATENT OFFICE? iin-lierre; Fannie coin? *,Svpecicavtion forming part oLetterf-s Patentfnlo. 37,4

4June 2, '1874; applicati@ nieu May 2,9, 1874.?.

Be it-h'nown that Livnnfls Hornet' Bos'- ton, in' the State ci' lvlfassaeinisejts, has made a new and'nset'ul invention having.'reference to ,the separating et' a sheet ot"- ca`ontchouc into narrow filaments or strips; and we, THE- BOSTON Ennsfric FABRIC COMPANY, assignees be lfully described in the following specifica'-A tion,A and thatin the accompanying drawings making a part thereof-v Figure l exl'iibits a top View, Fig. i? a front a transverse section, of a machine foroutting or separating caoutchouc in thev manner herein proposed.. Y A'sheet of caoutchouc, as usually Inade for being eut into threads orstrips for being` woven i'nto Suspenders or other elastic fabrics, is usu-v ally formed of considerable length, forty yardsbeing no uncommon length, the width being such as maybe desirable within the capacity lof the machine by which the sheet 'may be |prodnce'd. Such a sheet is, by the nia-chine iabove mentioned andhereinatter described, to be separated lengthwise into a series of narrow bands or strips, all ithe cuts through the piec'e being made by one continuous cut of the vcutter ot' the-machine. Instead of employing a series ot' knives or rotary cutters placed parallel toeaclr other, and varrangtnl at small distances asunder, and running in a body over the sheet from Aend to end of it, but one cutter is used, and with it a cylindrical drum, or its equivalent, so arranged with respect to thecutter that the latter, provided' with suitable mechanism for putting it in motion, shall be .caused to travel across the cylinder or drum from end to end ot' it witha regular velocity, and cut in a helical path through a piece ot' caoutchouc when wound around the external curved surface of the drum o r cylinder ina spiral about the said surface. By the term spiral about such surface, I me'au the curve which is inherent to the mainspring of a Watch'.

In the drawings, A denotes theframe of the machine as supporting, V of tcylinderfor drin `taining' and guiding,` :,vlltre,vv liti; upper surface of the carriage C 'are'two ways Arr," sittin .r

4o., dated Janna-ry 20, 1.8

with two pa allelf was or rails," 'd d, which are arranged to extend `at right angles tothe surface ol' the cylinder or crosswise of those on which the carriage() travels.- The said rails d d support and guide a poppet-head or cutter-carriage, D, which carries are'volving circular knife or a cutter, E, whose shaft is arranged within'standards S S, projecting upward from the said carriage l). A long screw, F, fixed in the frame A, .eficept in `being capable ot" being rotated, screws through a projection, g, extending Afreni the under side of the carriage C. .Therey isI also another screw, G, arranged within the carriage C, and so xed therein as to be statioinir \Y with respect to such carriage, except'in being capable ot' being revolved by a crank, H. This lat-ter screw screws through another projection, N, which extends downward from the cutter-carriage D and into'a groove, fi, which is made' in the carriage C. A lon g rotary drivin g-druni, l,is arrangedwithin the frame A and uin'lerneath the screw F,`as shownin the drawings. Two endless bands, o o, go around the said drum, andltwo' grooved pulleys, 7a 7;, xed 'on the rotary cutter-shaft. There is,a pulley, M, on the endjot' the shaft. of the driving-drum An. endless band, N,A goes around -the pulley, and another, pulley, N,xed on the shaft of the 'main drum B. Furthermore, there is a cone-pulley, 0, onthe inaiir drum-shaft, and there' lis also another such cone-pulley,P, on the journalo't' the' screw F. An endless band, R, runs around the two cone-pulleys.'v l v Froin'the aboveit will be seen that Vwhen lthe drivngdruin is put into revolution, not `only will the Vmain ,drum and the rotary 'cutter be revolved, but the latter will have a uniform lateral movement imparted to it' in a di. rection parallel tothe axis of the main drum.

, Preparatory to a sheet of caoutchouc'being reduced to strips by the saidniachiuc, it iste 'l be carried around the curved surface of the main drum, 'and to be suitably aixed thereto by cement or other meansT `As, each' strip, as! usually made for being converted into strips for elastic` webbing, Vwould'be several times' longer than the circumference of the main drum, itiSto vbe'wound about thc drum on a watch-mainspring curve or eliiral. Ai'ter be. ing so'fwound, the knife orrotary cutter is to' be forced into thel vstrip 'So'as -to-cut atonce" u entirely through all the layers 'of 'eaoutchouc,

and when the machine may be put in action,.

although-the path cut by the rotary fcutteu will .be a, helix extending varound the main. drum fromv end to end, it will 'befound after! Ward,or when the piece of caoutchouc may.

have been removed fr olnatlie drum, thatV such piece ii'ill be cut .l lengthwise" froin end to end of it'fin ajseriesof parallel Strips, We do not'claim, as the invention of said HULL,v themachine above described; nor do V cutting a-.slleet into we. claim all modes of threads; I but The improved modeV if-manufacture aboie' described,*consisting [in cutting the 'sheet into a continuous cutof 'eine l' cl1 tter ,as above explained.j

' BosroN ELAsTIcFABR-Ic co.,-

a-series 'of threads by

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