US1103279A - Fusee-cap. - Google Patents

Description

J. W. BDMANDS.

FUSBE CAP.

APPLICATION FILED MAY 5, 1914.

Patented July 14, 1914.

, (Bel it known that I, JOHN vi.QATENTOFFICE.-

ioHN'w. EDMANns, 'dFNEwToN CENTER, imSSACHUSETTS,v AssIGfNoR To CENTRAL `RAILWAY SIGNAL COMPANY, or PITTSBURGH, PENNSYLVANIA, A .CORPORATION 'or NEW JERSEY.

To aZZfwhom it may/'concern .f

. EnMANDs, a citizen of the United States, residing at "Newton Center, in the county ofMiddlesex and St-ate of Massachusetts, have invented certain new and useful Improvements' in FuSeeCapS, of which the followingis lal specification, reference being had therein 'to the accompanying drawing.

This invention relates to improvements inV fusee caps wherein' a combined closure for the c'ap and an internal shoulder or rim is formed within the fusee cap for the purpose hereinafter described, whereby the closure 15 and shoulder or flange are formed integral with the wall of the cap thus constituting a one-piece cap closure and shoulder.

Heretofore a combined closure and shoulder for fusee capshas been made of a woodplug which isinserted in the end of the fiber or paper tube, constituting the cap, the inner end of the wood-plug having a recess which forms an annular shoulder or flange. These wood-plugs have been fastened within the paper or fiber tubes either by means al tacks driven through the wall of the tube into the wood-plug, or by gluing the plug within the end of the paper tube. The purpose of the wood-plug is three-fold, one being to form a closure for the end of the tube forming the cap; two, the forming of an annulariange or shoulder against cap, and ,it is essential that the shouldb'e 'protected from being knoc ed oil' f .It is found which the end of the fusee abuts, thus protecting the primer of the fusee from con-- tact with' the cap whereb it isliable to be knocked olf, the plug an flange serving to can be lighted by friction between the complementary materials. of the cap and the primer` of the fusee. It is essential that-the plug should. not become-detached from'l the rimer by the cap, for if either the primer or the plug 1s lost, then the means for lighting the fusee is destroyed.

practice, that where the Y closure is a separate element (a plug) 4from .the cap, it at times becomes detached either m shlpment or 1n handling by thetrain- Specification of Letters Patent.

Application led May 5, 1914. Serial No. 836,583.

FUsEE-CAP.

' Patented July 14, 1914.

`man; the small tacksl which can be used will become loose and fall out, .and the plug lost, or when glue is used the glue may become soft and run down inside of the cap. and unite or glue thecap to the fusee, or

.the soft glue get on the primer, either of which Vis liable to destroy the efficiency of -the fusee; or the glue may dry out andfail to properly hold the plug in place, orthe f plug 1s broken away from the single layer of paper formin the cap tube to which it is glued. All o these conditions have, in

practice, actually existed, and when they arise, the fusee is practically useless in the hands of the trainman, and this may not be discovered until the trainman attempts to use it and hence too late to get another fusee, or to correct the defect..

The specifications ofthe Bureau for the Safe Transportation of Explosives, require that the lighting end `of the cap be const-ruoted to protect the primer and lighting end ofthe fusee, and this necessitates the stifening of the lighting end of the fusee cap, and the provision of a shoulder or iiange to hold ythe primer of the fusee out of Contact with the end or plug or closure of the cap.

The primary object of my invent-ion therefore, generically speaking vide a one-piece cap, closure and shoulder#- that is, forming the closure and the shoulder from the wall of the paper tube in a manis to proner to meet the requirements of the Bureau for the Safe Transportation of Explosives, and at the same time, absolutely prevent the separation of the lighting end of the cap from the tubular overcomes the de ectsabove-mentioned where the closure and 'flange are formed of` an element separate from the tube.

In the accompanying drawings: Figure 1 is a central sectional view of a paper tube.

in position on a mandrel before the operation-of closing in the end to form theclosure and annular ange. Figs. 1a, 1", 1, 1d,

1, 1f, and l?, show how the wall of the paper ltube is turned in to fnall pleted Closure and flange s own 1n Fig. 1g.;

form the comortion, and therefore,

Fig. 2 shows the tool in its final operation of tightly Vcompressing the closure against the mandrel, and the ange around the re-` duced end of themandrel.. Fig. 3 is a detached rspective view ofthe mandrel. Fig. 4 ows the improved cap in position tool'f6 .fto thefendthereof, the tool being-so.`

on a fuseeand yhow'tli'e Bange 'protectsithel primer from contact with the cap.

In producing my improved fusee cap, a. paper or fiber tubel is placed up'on a'i'nan-iY drel 2 and the tube has one end l projecting" a suitable distance above the mandrel. In

Fig. 1 ofthe drawing the tube is shownas projecting vabout the proper distance to fur` nish" suicient' Aof themwall or' material" ton'be" closed in and form a compactclosuref4, andi the protecting flange 5, as shown in Figsx-*' ander. The process v'of closing inthe: Iprojecting wall 3 of the v-tm'be :is-1aA continuous and uninterrupted 1 process, f 'f and fis carried out by lholding-the' tube lsta-tionary-on the mandrel' 2- and applying a suitable rotating shapedrthat the wall of the-*tube is turned inward.- *Ffigs layto 1g, inclusive, are-simply vtoil'lustrate` some'of the conditionsg'of-'the `Wall of the tube during this' 'continuous closing-in process until'fthefnal closurevand flange is providedfas showni in 1|rl`igs.' lgfand 2-and"4f. -lThemandrel 2 has a? reduced end 2a, forming 'ana'nnularspacef into .which the Iinwardly depending' turned-Ein -wall 8 (Figs. 1211). is caused to enter during the process of turning-inf'andclosin the-tube and in that way thervprote-cting-4 angef'iis formed. When' the turned-in Idepending 'wall' 8 of the tube has reached the bottom of theannu-lar 'space' 7 as-shown4 in-'Figlf,

between the' closure 1' andithe end-f the mandrel down the'sides of the reducedend lof the' mandrelf'in'ste'ad of forcing the-fair i into fthe folded and compressedfclosure;

'llhesegrooves'also serve-to assist in prevent- ?ing' the rbtation' of the 'tubefat the time 'the closure is being compressed? and the? greatest compression' is' eerted 'thereon-'by the rotating toolF '6. TheP fqualityr 'off paper used-i *for making' 'these'fcaps- :isl 1 such. that lf'nd the combined closure? and :ange can 'be made iin vthemarmer shown with the 'tu-oefdry IIowlover, the tube' Aisv preferably ,i subi eoted fto' @a ooatingoff pasteyprimarily' forfthe purpose bf un'itinor and fholding the' rfolded1 land-com- 'pressedic osare/into itsconrpressed: position after thel crimping, folding' and compressing -acti'onsihave been performed: Af complementaryl figniting lmaterial` 101 fis pl'a'cedon *the outerw side of the' closure 119i and a suitable fpaper covering V11=2incloses fthe lower edge pasted to the fusee which will "the ca to be broken .away from thefusee when t e fusee is to be lighted.

the cap and uniting it to the fusee and `alfso`cover1ng and protecting the comple- -mentary.igniting'material 10, is only one of --many ways in which the same result has been accomplished,\ and is only illustrated forfthe-purpose yof conventionally. showing the'oonrpletedf'fuseewith the cap liniplace thereon. 'menthe fu'see iis'to be iused, the

complementary ignitin'g e\material 10. is struck orI rubbed against y the primer 13 and 'theffuseel is lighted; the primer and complementarymaterial being substantially the .same chemicalsfas arefused on theheads and boxes 'of the'welhknown safety matches.

From the foregoing description. and illustration, 'it' -wi-llbeseen that in imy improved fusse-cap, the' closure -andprotecting flange vlu-tel'y; preventsf'itlv from becoming detached, as happens ywith the wood-plug ordinarily 'used for that.; purpose, thus accomplishing all ofthe purposes and .functions ofthe ordinary- -wood-plug,' without any A 3f-its de fects f Having thus 4fully described my* invention what I claimfand-desireto securefby Ietters Patent is:

l. A fusee'oapcomprising a iibertube 'intel a closure forfthe tube, and a depending annular flange. Y

l 2.-A- fussecap consisting: of --a ber" tube havingan integral closure anda Adepending fluse'e cap -comprisinga 'tube having its-wall crimped-and folded and compressed inward to -form a closure,land a portion lo the .closed-'ini wall depending from the clos- -ure into` anannularf protecting Sflange.

4.?'I`he methodf of closing lthe 'end of'a .fiber fuseeI 'cap 2l`with-f a depending annular Harige-"which consists in' irst crimping in- 'Wardlyi a portion of= the I4'wall-of lthe tube l from-fonefend-thereof causing it to,I` extend downward YWithinr the 'said tube, Afolding inward the turnedeinportionata point'` above the ldownvvardly' eirtending f portion, Aand viii-iaflly i'compressing the lfolded-in portion at afpoint v ab ove lthe 'end of the turned-in portionfto form Z-a closure/and a 1depending `v ange.

55. 'Thef method fofA closing' *the end offa fpending' from*j the-v said"y closure, 'which con-v fof Afthe -tubefand causing -itto proj ect downwardly lin` the- Kformh of f an f annularj fiange,

fuse'e cap lvtlienVitis'7 placedon the fusee 12 as shown in Fig.' 4, and this paper 11 has its cap: "is detachedtherefrom and* the exposed 'are' -madeintegral-with the ltube whichv abso lhavfing itsvwallf-turned inward and formed protecting flangeintegral with the `closure.

lsiste in crimping inwardly' rin-extending end Y vhold 'the cap in position thereon, but enables he arrangement here :shown vfor inclosliber fusee cap with an annular 'liange-'defoldingv inward the end of the'tube and the In testimony whereof I hereunto aiix my inward downwardl extendin Bange to signature in the presence of two witnesses. Afrm a, closure, an finally su jecting the JOM ED i y folded-in' portion to pressurebetween mner 5'. and outer relatively rotatable and stationary Witnesses:

' members at a point above the downwardl ROBERT M. CLARK,

s extending inner flange. ARNOLD MAGKINTOSH.

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