US2004394A - Self lighting cigarette - Google Patents

Description

,Y vention;

Patented VJune 11, 1935 "2,004,3941 i Y senr` LIGHTING-creatinine Y e v i i `vlieg cette, ttndupgfmm. i v y 'e l Application July 2, msaselriai' No. 6205686 riolering.` (C1. 1x1- 52) i This inventionfr'elates to improvements cigarettesand pertainsparticularly to a selfelighting cigarette.

The primary object of the present invention is 4to provide a cigarette having a tipformed of a Vsubstance which will ignite when drawn across a suitable friction surface, so that thecigarette may V be readily lightedwithout theV use of matches or any of the other usual lighting devices. c t

Another objectof the invention istoprovide an improved method of forming a lighting tipfupon a cigarette whereby the tip will retain its' form 'and position and whereby the c'igarettemay be readily grasped to facilitate `drawing it across asuitable surface for the production of the necessary friction tol effect the ignition of the tip. l

`A further object of the invention is to provide amethod of attaching a lighting tip toa cigarette bymeans of which the marring of theappearance of the cigarette is prevented and the cigarette isv v given a` distinctive appearance. v

The invention will' bebestjunderstood from a consideration of the following detailed description -,taken in connection with the accompanying drawing forming part of this specification, with the understanding, however, that the invention is not `confined to anystrict conformity with the showving of the drawing butmay be changedor modified so long as suchA changes or modications mark no material departure from the salient features -of the invention asl expressed in the appended claims. l i

In the drawing:f a 1 l`Figure'l is a View inside elevationA of a cigarette formed in accordance with thel `present in- Figure 2 is a longitudinalsectional view through the end of a cigarette showingtherfirst step in `the formation of the `i'griitirig. tipthereon; y

tip of. a cigarette showing the ignitingv tip applied theretoy"4V L l 4 tion cf a cigarettepackageshowing the scratching'surface with which th'e'packet is supplied and over lwhich the tip of the vcigarettemust be drawn `in order to effect its ignition.

e Referring now more particularly to the 'drawing wherein like numerals' of reference indicate corref spending `parts throughout the several views, the

methyleneblue. In addition to providing afdis- `.tinguishingmarking for the cigarette thecolored area indicates the portion ofthe cigarettewhich `should be vgrasped when lighting the same: i

-the1 acacia gum as the same dries and thereis v Y Y Y from thev surface of the papfer and from the end `Figure 3 isalongitudinal sectionalview of thef t c y e ,anyotherlmannen Figure Vl-is a perspective-view of the bottom por-` Y fadjaeritj me ignitioniup and indicated bythe numeral 3 constitutesa reinforcingarea by which the cigarette may be grasped in drawing vthesarrie across the scratching surface. e

In the manufacture of a'cigarette inaccord- 5 ance with the present invention the tip of i,the same is dipped into` or otherwisehas vapplied thereto an aqueous solutionof acacia of 2id-35% 'strength. 4It ispreferable that thissolutionmbe"` colored Ain some suitable Vmanner .so to cover 10 up `anydiscoloration of the paperof Lthe cigarette:

whichmay occur. from the application of the striking tiprnaterial thereto `or from the wetting of the tobaccofandit is desired that this aqueous solution be colored ,with a substance such as By theV use of an aqueousV solution of` the strength `stated there is formed a coating 4`which v l stiiens'the tip of the cigarette and also provides Va thin covering 5 over thetobacco in the Yend thereof. This stiffened portion `4 around the exterior ofthe cigarettebod;7 and the coating 5 25 is illustratedvin 'an exaggerated manner in Figures `2 and 3 and, as is shown, a slight depression is formed in the endpof the cigarette. "flhisgdepression is brought about by the contraction of 3() thus formedin this manner the "desired.depres-`V sion for the Apurpose hereinafter set forth. It will, of course; be understood that in the-actual 4manufacture of the Vcigarettethe coating of acacia gum will be madeas thin as possible con- 35 sistem withvthe production@ thefvresuite desired. is'jtherefore, desirable thatfin` the e application of this coating any excessjmucilage berernov'ed.

of tnefcigaretteafter tnegcigarette :end has been ,e4 dipped orhadthe mucilage applied thereto in After. .the tip of the `cigarette hasbeenprepared in the manner described itis allowed to 4r Ypartially dry and :the striking material is then applied to the tip. The material employedafor `forming the striking tip isjprepared from theV following formula. f

Pumi 2.5123' 1.

Group 2 Per cent Phosphorous sesquisulfide, 2 grains 1.5 Aqueous solution of acacia, (10%) 10 to The above formula is made up as follows:- The ingredients of Group 1 are thoroughly mixed together and there is then added to this mixture a sufficiency of the 10% acacia solution set forth -in Group 2 to form a thin mucilaginous mixture. The prosphorous sesquisulde of Group 2 is then added to this mixture and thoroughly incorporated. After allowing the mixture to congeal to a certain extent the remaining portion of the 14% of the 10% acacia solutioncalled for is added and this again brings the mixture to a relatively thin consistency. The mixture thus prepared is then picked up on a suitable carrier and a drop is allowed to fall upon the end of the cigarettewhich has been coated with the thicker acacia solution. .A drop of sufficient size is employed to just cover the end of the cigarette and make contact with the edge, Iof the paper the drop settling in the depression of which the coating 5 forms the bottom.

When this has dried it will form a rounded tip of the character indicated by the numeral 6. This applied drop of material is then allowed to 'dry at aV moderate temperature. The preferred temperature for drying 4is 85 F. At this temperature the tip will dry without cracking' and will retain its form. After the tip has thoroughly dried the cigarette is ready for use.

While the cigarette tip prepared in accordance -with the above formula may be ignited upon a scratching surface of the character provided upon safety match boxes, it is preferred that the package in which the cigarettes may be packed have the bottom thereof coated with a scratching material of the following formula. This scratching surface is indicated by the numeral 1 and the carton to which it is applied is indicated by the numeral 8. The formula for the preferred scratching surface material islas followsz Per cent vRed phosphorous 35-50 VLitharge 10--20 Pumice 30-35 Gum solution 1.0-15

rI'he surface of the carton is prepared forthe application of the material-of the above formula by applying a35% solution of acacia thereto and allowing thesame to dry. After mixing the dry ingredientsV of the formula the gum solution I called for is added and the mixtureis then applied to the previously prepared surface of the package, Vby spraying or spreading on with a brush. The gum solution called for in the for' mula for the scratching surface material is of 35% strength the same as employed'in preparing the tip of the cigarette to receive the igniting substance.

A cigarette provided with a tip according to the present invention may be readily ignited in a strong wind or under any. other circumstances where the use of a cigarette or mechanical lighter would be difficult and the character of the striking tip is such that no offensive taste or odor will be obtained and the materials employed are non-poisonous in the proportions used.

In addition, the formation of the stiffened area about the tip of the cigarette by the use of the mucilage solution provides a means for gripping the cigarette in lighting the same Without danger of tearing the wrapper.

While the formula set forth calls for a muoilage of acacia'and the use of a mucilage of acacia has been described for stiilening the end of the cigarette preparatory to applying the igniting material, it is to be understood that the invention is not to be limited to the use of this Vparticular substance for other mucilages may be employed, such for example, as mucilage of tragacanth, however, mucilage of acacia is preferred because of the fact that it is free from unpleasant odor when burned and when dry it provides the correct amount of stiifenin'g particularly where used around the area indicated by the numeral 3. In the making up of the mucilage of acacia` it is preferred that it be made according to the method prescribed by the United States pharmacopia which requires its preparation Ywithout the use of heat.

In stating that the tip of the cigarette isV allowed to partially dry after the mucilage has been applied thereto it is to be understood that thi'sstep is set forth merely for the purpose of making it clear that the complete drying of the tip is not essential to the proper carrying out of the method and that time may be saved by proceeding after partial drying only has taken place. Y

`It is also to be understood that the chemicals must be finely sub-divided as well as thoroughly mixed in order to obtain the best results.

In describing the formation of the striking surface upon the bottom of the cigarette package it was stated that the 35% acacia solution or mucilage is employed. This is preferable but is not absolutely necessary for any other suitable type of mucilage may be used, such for example, as the mucilage which may be bought under the name of Le Pages. A,

In the mixing of the ingredients of Groups 1 and 2 it was stated that after the addition of a small quantity of the acacia solution. and the by adding only a portion of the acacia solution l and allowing the congelation to partially take place.

Having thus described the invention, what is claimed isz- 1. The method 'offorming a self-lighting cigarette. which consists in dipping or otherwise impregnating the wrapping at one end of the cigarette andthe tobacco exposed at that end into a water solution of acacia gum whereby to form a stiffened area at the endof the cigarette and a slightly hollow reinforcement across the tobacco, drying the gum solution, then placing in said hollow va body of fulminating substance to form a head which does not exceed in diameter the diameter of the stiffened end portion of the cigarette, and finally drying the fulminating substance.

2. The method of manufacturing a self-lighting cigarette which comprises applying a solution of a gum to one en'd of the cigarette to form a covering for the tobacco in the end of the cigarette and to stiffen the wrapper thereof, then partly drying the gum solution, the partial dry-` ing of the solution causing a contraction or the gum and formation of a hollow in the end of the cigarette, then inserting into the hollow a soft tenacious drop of aiulminating Substance and conning' thesame to the Varea, defined over the end of the cigarette by therpartially dried `gum solution whereby the side of the cigarette substance. i `3. The method is kept `free from said substance and iinally completely drying y,out the gum solutionj and `said ixettze, which consists in dipping one endo! the cigarette into a. watersolution ot'acacia gum of from thirty to thirty-tive percent strength to form a covering lm across the tobacco at the end of the'cigarette and to impregnate the wrapor forming self-lighting ein.;

of the cigarette, then partially drying the dipped endV of the cigarette to effect the partial harden- `ping thereof throughout a portion of the length ing of thegum and the` stiifeningof the dipped portion of the wrapper, the partial drying of said solution causing contraction of the `gum where-N by a depression isformed inthe end of the cigarette, then applying tothe gummed depressed end ofthe cigarette sumcient of a mixture'con- `taining a solution of a.V gum and chemicals which combine to give a fulminating substance `to cover only-the end of the cigarette and without per` ceptibly overlyingV the sides of the same, Avand finally drying `the gummy mixture of chemicals p at an eventemperature to `form a hard dry tip. V1:5

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