US2462446A

US2462446A - Built-in circuitous smoke passage

Info

Publication number: US2462446A
Application number: US573553A
Authority: US
Inventors: Starnes R Wellborn
Original assignee: Individual
Current assignee: Individual
Priority date: 1945-01-19
Filing date: 1945-01-19
Publication date: 1949-02-22
Anticipated expiration: 1966-02-22

Description

Feb. 22,1949. R. WELLBQIRNI 2,452,4 6

BUILT-IN CIRCUITOUS SMOKE PASSAGE Filed Jan. 19, 1945' f atented Feb. 22, .1949

UNITED STATES PATENT OFFICE.

BUILT-IN CIRCUITOUS SMOKE PASSAGE Starnes R. Wcllborn, Nashville, Tenn.

Application January 19, 1945,'Ser ial No. 573,553

1 Claim. 1

This invention relates to a cigarette tip, and has for one of its objects the production of a simple and eflicient means for providing a long or circuitous smoke passage which is built-in or fitted into a compact amount of space at one end of a cigarette.

Another object of this invention is the production of a simple and efficient smoke filter tip for cigarettes, and the like, which is provided with :a circuitous smoke passage to cause the smoke :from burning tobacco to pass through a lengthy and irregular passage before entering the smok- .ers mouth.

Other objects and advantages of the present :invention will appear throughout the following specification and claim.

In the drawing:

.Figure 1 is a plan view of a strip from which one form of tip is constructed, certain parts being broken away;

Figure 2 is a plan view of an intermediate companion piece used in constructing the tip;

Figure 3 is a fragmentary, longitudinal, sectional view taken on line 3-3 of Figure 1;

Figure 4 is a transverse sectional view through the tip in the process of being rolled;

Figure 5 is a fragmentary perspective view of one of the corrugated strips and its companion piece of the form shown in Figure 2;

Figure 6 is an exploded view of the tip, the plug, and the cigarette;

Figure '7 is an enlarged fragmentary sectional view of one end of a cigarette tip illustrating the position of the central closure.

By referring to the drawing, it will be seen that IE designates one type of corrugated strip of paper or other suitable material which may be used in forming the filter tip 16. The strip i5 is provided with transverse corrugations li. These transverse corrugations are connected to provide a continuous serpentine smoke passage I8 extending from one end of the strip it to the other, as shown in Figure 1. One end of the smoke passage it is provided with an enlarged entrance opening l9, which entrance opening extends to the forward edge of the strip l5 and to the corner 2|. The opposite end of the smoke passage i8 is provided with a smoke outlet opening 22 similar in construction to the entrance opening l9.

A companion piece 23 of flat paper or other suitable material is fitted against the corrugated serpentine passage I8 in the manner shown in Figures 3 and 4, and the strip l5 and companion piece 23 are then coiled or rolled together as of a special holder.

In the form shown in Figure .1, the tip is placed at one end of the cigarette so that the entrance opening l9 abuts the tobacco in the cigarette and the outlet opening 22 is located at the outer end of the tip which enters the mouth of the smoker, It is preferable to plug or seal the center passage of the tip when the same is constructed and this may be done by means of a sealing disc Z5 of paper or other material which may be pasted in place as shown in Figure 7. i

By noting Figure 6 it will be seen that a .glisc 25 is adapted to be pasted in place over the cen: ter of the filter tip near the inner end of the tip so as to close the central portion of the tip at the point thereof adjacent the tobacco in the cigarette 24. This will cause the smoke to enter the tip lfi-note Figure 6--near the periphery of the tip, as at Ili In other words the smoke is drawn into the filter or tip it through the passage or passages located near the circumference of the tip l6 and the smoke comes out of the tip at its outer end or at the smokers end near the center of the tip, in this way providing the long or circuitous passage within the filter or tip.

In view of the fact that the disc 25 which forms a closure at the center of the tip it is fixed to the end of the filter or tip thereby providing the smoke inlet near the outer circumference, a great degree of accuracy in placing of the disc 25 is not required. All that is necessary is to seal-off the central draft or block the central draft. In view of the simplicity of the structure and the elimination of accurate closure placement, the danger of duds in faultily manufactured filters is eliminated. It is not desired to restrict the present application to the particular location of the disc 25, but the arrangement as illustrated is found to be preferable.

It should be noted that the structure shown in detail in Figure 5, the smoke passage terminal serves a dual purpose:

1. It provides an enlarged, extended mouth or terminal at the opening of the passage;

2. It serves as an obstruction to prevent a direct smoke passages at the end of the cigarette which is placed in the mouth of the smoker would have outlets near the center of the tip l6 and this is preferable due to the fact that the moisture and pressure from the lips of the smoker might tend to seal-off or crush the corrugations near the periphery -and prevent the smoke from being discharged l-from the endof the cigarette tip it. Consequently, by placing the smoke outlet near the center this difiiculty is eliminated. It has been found that the draft upon the tobacco is sufiicient even when the passages are located in the manner as described.

Having described the claimed as new is:

An article of the class described comprisinga strip of material having a plurality of parallel transverse passageways extendingin a direction 2 2cm one vsiizleedge of the strip toward the opposite s1 e edge and terminating short'of said side n ent n h a is edges, "the (ends of the passageways having alternateconnectionsnear said'side'edges to provide aserpentine, continuous, smoke conveying channel of greater length thanthe length ofthe i-Numbe strip, said smoke conveying channel having a smoke inlet at one end and at one side of the strip and having a smoke exit at the opposite end and upon the opposite side, said strip being adapted to assume the form of a roll constituting a. cylindrical body, the parallel passageways of said smoke conveying channel thereof extending in a direction substantially perpendicular to the base of the formed cylindrical body.

- was "a twsens REFERENCES CITED The following references are of record in the I D STATES PATENTS Date Bourgeois Dec. 19, 1882 Hill Dec. 19, 1911 Delbey Aug. 19, 1919 :Muller :Mar. "24, 11936 L QRE QN PATENT Number 6911mm a m 6. page