US1532260A

US1532260A - Cloth-singeing device

Info

Publication number: US1532260A
Application number: US495557A
Authority: US
Inventors: Osthoff Walter
Original assignee: Individual
Current assignee: Individual
Priority date: 1921-08-26
Filing date: 1921-08-26
Publication date: 1925-04-07
Anticipated expiration: 1942-04-07

Description

April 7, 1925. 1,532,260

W. OSTH OFF CLOTH SINGEING DEVICE Filed Aug. 26, 1921 2 Sheets-Sheet 1 April 7, 1925.

1,532,260 W. OSTHOFF CLOTH SINGEING DEVICE Filed Aug. 26, 1921 2 Sheets-Sheet 2 Patented Apr. 7, 1925.

WALTER careers; or seamen, GERMANY.

creams-remains nnvrcn.

Application filed August 26, 19231. Serial No. 495,557.

(GRANTED UNDnaTHE'rnovIsIons on THE Aer or reasons, 1921, 41 star/n, 1213.)

T 0 (ZZZ whom 2'2? may 0012 cern Be it known that I, WALann-OsrHoFF, a

citizen of the German Empire, residing at- Barmen Germany, have invented certain new and useful Improvements .ll'l Cloth= Sing-sing Devices (tor which Thave filed applicat ons in Germany; Fob. 12,1915, and- My invention refers to the singeingof fabric and more especially to aprocess and apparatus by which, the width of the gas flames can always be adapted to thdwidth of the fabric that is being singedat any time and the intensity of the flame also can according to the nature of the be regulated fabric.

When singeing cloths which are less wide than the widthot the burners a considerable portion of the gas is wasted because the flames are too wide, and several arrangements have already been devised to overcome this disadvantage. These devices have however been entirely mechanical arrangemerits by which the'outer ends of the slit in th burner have been shut off for a certain d ance towards the centre by means of slides and the like. Cut-ting oil? portion of the slit in the burner involves a waste of time as there are tour'to six burners on one machine and each burner must be adjusted Arrangements of this kind inrori e the further disadvantage that burners at special construction are required, and it further diliicu'lt to fix the sliding plates i so tightly that a greater loss of gas does parts of the burner not taho'place atthose \YlliCll are not allght.

slit in the burner when combustion takes ace. in order to prevent the combustible lllllrlll'c from burning at certanrdistance from the two outer ends of each burner,

.ftccording to the present invention these ulties areovercome 1n a simple way by that portion of the slit whichis not .t and left, in order to escape through compressed airiis admitted from'both sides and thus fills up the space int-he outer ends of the burner'so that the combustible 'mixture which fiows right and "left from the centre can only expandyover a certain distance. The combustible mixtureflwill their escape through the centr'e portion of the" burner while compressed air escapes at each outer e'ndin proportions dependin'gon the adjustment oi the compressedair supply.

The i i u1e. compressed air supplied to the ways; p

- In the'drai my invention is illustrated by way of example; In the drawlngs Fig. 1 is a diagrammatic representation of the device for carrying out the novel proc'cess, i Fig. Fig.1,

Fig. 3 a longitudinal section otthe mixing and distributing apparatus on the line 3-3 of Fi 5,

and

Referringto the drawings 1 1s a gas- 5 a cross-section'on the line 5-5 of compressor and 2 an air-compressor, the latter supplying the airnecessary'both for tributing deviceti. The latter is fitted with a hand-wheel 6 for regulatingfthe 'com bustlble "nnxture which flows through. a

main-conduit T to the burners. In tlie;eX-- ample lllustrated' there is shown only one of the burners 8 which isconnec ted with the conduit 7 by means of a branch "con duit The device 5 is also fitted with another hand-lever 10 "for regulating the air for damping. which flowsto the burners through a main conduit '11 and thence through separate branch condults 12' The distributing conduit '12 for each burner leads into a channel 13 on the burner, and said channel is connected'by means of an 'ulation of the combustible miX ial burnerscan be eitect'ed in various- "ings afiixed to this specifica-I tion and forming part thereof a combinedmixing and distributingvalve; embodying =2 is a section'on the line 2+2 of Fig. 4 a section on the line a l-ot Fig 45, v

aperture lat at each end with the chamber for the combustible "mixture The slit 15 which extends over the whole length of the burner forms the burneropening.

With this apparatus the novel process forming the primary obiect of the present invention takes place in the following manner:

The necessa y combustible mixture, consisting of a gaseous fuel and atmospheric air, is conducted through the mixture conduits- 9 to the chambers in the burners 8. The point of admission of the combustible mixture is generally in the middle of the burner. so that the combustible mixture flowing out of the conduit 9 must expand outwards in the direction of the arrows 0 into the chamber of the burner 8 and through the slit 15 on top of the burner where combustion takes place. By a corresponding adjustment of the hand-wheel (l the combustible mixture is admitted to the burner 8 in the quantity necessary for singein g the material. As long as the compressed air conduit 11 is kept closed by means of the lever 10. no conduction of compressed air to damp the. flames takes place.

In this case all the flames on the burners which are connected up burn along the whole width of the burner, so that the width of material that can be singed is as wide as the apparatus allows. If materials are to be singed which are narrower than the width of the singeing slit, then the attendant by turning the lever 10 allows compressed air to flow through the

conduits

11 and 12 to the ends of the burners. The compressed air expands in the direction of the arrows Z against both sides of the columns of combustible mixture which are in the burners with the result that the flames at the outer ends of the burners are uniformly extinguished and withdraw from both sides towards the centre for a distance which depends on the setting; of the lever 10 so as to correspond with the narrower widthof the material to be singed.

In order that the aforesaid method of working may be as perfect and as simple as possible it is necessary that both the air compressor and the compressor should be provided with exact pressureregulators, so that both the combustible mixture and the compressed air necessary to damp the flames are always supplied to the burners under the same pressure. When in operation therefore an alteration in the temperature or width of the flame cannot occur after the distributing apparatus has been adjusted. If the process is to be employed in fabric singeing apparatuses in which two pieces of cloth are being fed in side by side, the arrangement can be such that the combustible mixture conduit 9 for each burner is divided into two branches which are connected inm'iediately to the right and left of the centre of the burner and of which either or both can be shut off or varied, so that the combustible mixture is conducted to the burner through two conduits which lie close together and either half of the burner can burn separately or they can. both burn together as may be desired.

Should the case occur in which, when two pieces of fabric are being singed at the same time the quality of the materials differs (for example a heavy fabric on the right ha d side of the machine and a light 'abric on the lot) and each must consequently be operated upon with a different number of flames. it is then possible to operate on the right hand fabric with four flames and on the left with only two. In this case the left hand branch conduit for the combustible mixture must be shut ell on two of the burners by means of a special cook or tap. so that only the right hand half of these two burners is supplied with the combustible mixture. At the same time, the pressure of the air which serves to damp the flames of the two burners which are only alight across half their width must be adjusted to be so great that the space in. the burners which. while singeing the lighter fabric cannot be charged with combustible mixture, is tilled with compressed air.

In order to obtain a correct flow and distribution of gas in the burners special stops or guide plates may in some cases be provided.

The distribution apparatus so eon structed that by turning the hand-wheel 6. in order to regulate the width of the flames. the proportions of combustible mixture and compressed air for damping; the flames are so altered that the total supply and therefore the intensity of the flames remains un changed Conversely by turning: the handle 10 the total supply and therefore the intensity of the flames can be regulated independently of the width to which the flames have been adjusted at any time.

The preferred construction of the distributing apparatus 5 is shown in Fi s. It consists of a casing in which a cylindrical sleeve 1. is fixed. Two pistons 18 and .9 are movable in the cylinder 17 and are con nectcd together by means of the bolt .20 so that while each can rotate independently about its longitudinal axis they can he moved together up and down (i. e. bachwards and forwards) in the cylinder 1? by means of the connecting rod 21. which is attached to the link with which the bolt is provided, and the crank or eccentric 22 which is connected to the hand-wheel 6. The piston 18 can be rotated (i. e. displaced s'deways) independently of the piston 19 by means ofen eccentric b01523 u ltielwcne'tw'es in a longitudinal groore in said piston, and

the piston 19 canbe rotated independently ot the piston 18 hud the boltfiO by means of the lever 10 W1 'elris'l'itted-to the n'1e1n ber 1 3% provided with atp1n-25 whlchcngages 111 :1 longitudinal"groove nr-the piston '19.

The compressed L air conduit, from which in the example illust "ated-both the zur necessery for the "production of the combustible mixture us; welt us that for dumping'the fiun' es is delivered, is connected to the flanged openmg-261 The CODClUlt font-he compressed for the production of" the comb .stible' nu ture 1s connec'edflanged opening 21 end the "distrrbuti 11L; nduit WlllCll feeds the combustible mixture to to the the burners to the flanged openhigQS; The

compresed sir for. damping the tleme fiows into the distributing conduit-thnough'the flun 'ed opening QQ;

()ppositethe openi-ng 26 lllldSlGQVQ" 1'? has two rectanguler openings-30 midi-31 :torthe passage of thecompres ldair tor the pro: duction of the con'il'iusti-l-ile mixture and the compressed air for: damping the; flames spcctively: Opposite the* opening 27 :the crlinder 17 is providedwitlre port32- tor the compressed gas; The arcw o l the'ports 30 and regulated by meens'of the piston v end that of the port 81 by ineens of the piston 19, the wells of said pistons 18 end '10 being providedwithcorresponding sperturcs;

In the drawings the epnznratus is shown in the position in which the openings ill-

end

9,2 for the e'chnission ot'the; airandgss the'pro'duction ot the combustible mi) ure'clo'sedf completely wh'er'eas the opening:

for the edmissiou of"compressedeir tor dumping the flames is fully open: By moving: t z-uidle lfi the opening Bl for the conmre d till can; :rlso'be eompletely closed,

so that in this-position oi. thenpperntus neither the coinlmstible n'nXturc, nor" the compressed air can reecln the burners;

'inc apparatus is manipulated in the tol- The lever 10 is so adjusted thetthe pmt 1 for the compressedmir t'or damping the; n in the drewing with the pistons :18 and 1.9 it the topof their stroke both the openings SOs-11d 2'32 for the adn'iisston of the strand. gas tor the productioirct thcfcon'n is completely closed; In the positionvery licrcefiame ofe partieulmWidth.

the comprcssed eir and to" the eompressed gas are accordingly opened, end the coin' bustible- 'Vure flowsthrou 'l. the ll-en opening-2e into thc distribiu xconduit r thence to the-burners. 1 t ll lnnner therc is fii st -fenr d e smell fian'ie r-vhieh extends along its whole length sud becomes con-- tin-nail ;larger as tlie portS'Z-KO end 32 ereopened further by turning the llt'tHEl-WllGQl and thus moving the'p stone 1S and 19 which are ionneeted to it until satin ports are liullj open Wl1t11-i'l16 pistons have made it complete stroke and have reached tieir lowest position; whereupon a very fierce flmne burns elongthe Whole length of the burner. If however the f "res are not recompressed air for dumpi'ngtie fiemeis 10 so thatthe piston 1h eoinits air to the conduit 81'until the Width of the 'tlejn'ic has been reducedso as to eorres iond with the Width of the material tobc sin Let us su pose nor: fore VJ hezivy nmterml is to be operated i tt', first the positionbt the pistons' shown in therdrawing, but the lever 10 is so ad justed that-the sir conduit 32-1501 supplying; the eompressed'ainfor dumping the flames is fully open; hen thus adjusted the. necessary amount of compressed air for dan'rpiugr the flames which when using" the fiercest flame, would be requiredentirely to repress the combustible mixture is supplied to the burners. It noiv by turning the hand-Wheel 6 the

pistons

18 and 19 moped"downwards; the air port and the gesportr32 hregreduelly opened and the air port 31 for regu'leting the supply of compressed'ra ir fondamping'the flames is simultaneously gredualhy: closed. Assun'i ing thnt the aforesaid apparatus is constructed tor a burnerwidthot 3 metres, and u 1 mm. opening of the air and

gas ports

30 and 32 will produee an intense flame about 100 ninnin Width in the middle of the burneix. On opening the ports 30 end 32 Wider and-st the same time closing the airport (by turning the hend-wheel 6) the intense flames spreads: continmilly outwards from the -iniddle: in accordance with the adjustment otthe gas and air supply; The intensity of the flame however always remains uniform"and is independent of its Width. In correspondence With the resulting increase in the supply of combustible mixture the supply of compressedair for dumpingthe' flame is proportionately de creased. If during; this procedure the in tensity of the :flames is alsoto be altered it is-necessery' to adjust the portSI by means of the hendlefl'lt) until the desired intensity has been attained. If a particular intensity of flame has in this Way been so a obtained for a pirticular material it remains constant however much the width 01" the flames having this partieula intensity are altered by means of the hand-wheel 6. By reason of this method of working the very important advantage is attained that when once the intensity or singeing etl'ectof the flames has been adjusted so to be constant at a desired degree the width of the iames can be altered at will.

Instead of the foregoing construction in which the flames are controlled by means of the

ports

30 and 32 and the piston 18, the apparatus can also be constructed in such a way that the combustible mixture supplied through the flanged opening 27 and the port 32. In this case the air port 30 is not provided in the ylinder 1?. In this form of construction of the apparatus the method of working remains unchanged.

it is important that the supply of combustible mixure as well cit con'ipiessed air for damping the flames should be regulated by means an adjusting ipparatus or valve, that when once adjusted the total sipply remains constant no matter wnet-her, in rder to obtain a narrower flame, smaller amount of combustible mixture and a greater amount of compressed air is fed to the burners or whether other :ariations in the proportions are in rolved. Independently of this the total supply must be capable ot being adjusted to any desired extent. By means of the aforesaid appa'atus all these requirements may be easily satisfied.

I claim:

1. The described method of controlling the lateral extent of a sheet-flame, which comprises causing a non-intlanmable pressure gas to crowdingly act in lateral direction upon the flame at its base.

2. The described method of controlling the lateral extent of a sheet-flame, which comprises causing a non-inflannnable pressure gas to compressingly act simultaneously on both narrow edges of the sheetllame at the zone of its inception.

8. The described meth d of controlling the lateral extent oi a pressure-gas sheetilame, which comprises causing jets o't noninflan'nnable pressure gas to crowdingly im pinge simultaneously upon the base ot both narrow edges o1 said flame, tor hrottling the latter between said jets as to its lateral extent, and correlating the pressure of said jets to that of the i'lame :tuel.

4-. In a device ot the type set forth, in combination, a burner presenting a relatively extended narrow flame slot and having a port intermediate its ends for the admission of a combustible pressure gas and means spaced laterally from said fuel port intermediate its ends for adn'iittinsr a1 tlainnable gaseous pressure medium and a port near each end for admitting a non-inflammable gaeous pressure medium.

6. ln a device of the type set forth, in combination, a burner presenting an elongatet narrow flame slot and having a port '1 termediate its ends for admitting an inable pressure-gas and a port near each itting a non-inflaminaole pressure gas, and means for 'nterdependently controlling the supply of the pressure to the several said port 7. in a device of the type set forth, in combination, a burnerpresenting an elonted narrow flame slot and having a central combustible pressure-gas port and a nressuieair port at both ends, a gas and controlling device, comprising a ported casing, two axially superimposed cylindrical ported valve slides in said casing, means for jointly axially reciprocating said ported slides, and means for rotating them independertly of one another.

8. In a device of the type set forth. in combination, a burner presenting an elongated narrow flame slot and having sepa rate-pressure gas and pressure-air ports, a gas and air controlling valve, respectively c =ting a pressure-air intake, a pressure- 'as intake, a pressure-air outlet, and a gas .nd air mixture outlet, conduits respectively connecting said pressure-air outlet to said air ports in the burner and said mixture outlet to said gas port, a. fixed ported cylin drical seat in said valve, two axially superimp ed cylindrical ported valve slides in swivel connection cooperating with said fired seat, the one cylindrical slide intended to control the flow of pressure mixture, and the other the flow of pressin'e air and both said slides having a longitudiinil slot, means for jointly axially reciprocating said two cyq vithiu their seat, comprising lindrical sli a hand-wheel and link connection acting on the mixture-controlling valve slide, an eccentric in coaetion with said longitudinal slot in the minture-controlling slide for rotating he latter, and handlevcr means coaeting with the said longitudinal sic; in the air-controlling valve slide for rotating the latter, each valve slide being operable in rotary se se in )end ntly oi the other, but both she es alv ay jointly reciprocable in axial direction.

in testimony whereof I al'z; my signature.

YVALTER OSTHOFF.