476 



THE INDIA RUBBER WORLD 



[June 1, 1914. 



that the specimens show the traile-mark as actually used 

 upon the goods. 



John Jones. 

 notary public, 



Subscribed and sworn to before me, a 

 this 1st day of June, 1914. 



L. s. 



Richard Doe. 

 Notary Public. 



If color is not an important part of the mark, no description 

 of it in the statement is necessary. 



In explanation of the use of the designation "Class — " in the 

 statement, it should be stated that the Patent Office divides all 

 merchandise into classes, and the class to which the goods cov- 

 ered by the trade-mark belong must be stated. 



The fee for obtaining a trade-mark is now $10, which should be 

 sent by money order or certified check to the order of the Com- 

 missioner of Patents. 



(Cofyright, by Elton J. Buckley.) 



FIGHTING FIRE ON THE GREAT LINERS. 



■"PHE vital importance of efficient means of fighting fire on 

 * shipboard has been brought to the attention of the public 

 with great frequency of late, by reason of many terrible sea 

 disasters. Here is an illustration of an apparatus which is be- 

 ing installed on some of- the largest transatlantic liners. It con- 

 sists of a helmet, with cape coming well down over the wearer's 

 shoulders, to which is attached a rubber hose, on the other end of 

 which there is a bellows, worked by an assistant outside. This 

 bellows supplies the fire fighter in the smoke-filled room with 

 pure air. In addition, there is a second pipe which serves as a 

 speakin.g tube, so that there can be direct and instant communi- 



Smcke Helmet .and Equipment for Fighting Fire on 

 Ste.amers. 



cation. Then there is a third means of communication — not 

 rubber, but eminently desirable in this sort of work — viz., a rope 

 that is tied around the fighter's waist, by which if he becomes 

 disabled he can be piilled back to safety. 



The second picture shows the fire detector and extinguisher 

 apparatus installed on the S. S. "Imperator." This equipment 

 consists of a set of pipes, shown in the cabinet in the photo- 

 graph, one of which is connected with each of the compart- 

 ments of the hold. The cabinet contains an electric suction 

 fan in the enclosed part at the top. This fan is always in 

 motion, drawing a column of air through each of the pipes 

 and exhausting it through the large pipe leading up to the 

 ceiling. If a fire gets started in any part of the ship the fan 



will soon draw the smoke up through the particular pipe lead- 

 ing to that compartment and as this outfit is located on the 

 bridge of the ship, the officer in command has it constantly 

 under his observation. .As soon as smoke is seen arising 

 from any pipe, the doors are opened and the air shut off and 



1-iRE Detector .\nd Extinguisher. 



the heavy steam hose which the sailor is holding is screwed 

 down in connection with that particular pipe. This hose is 

 connected with the steam pipes from the engine room and it 

 takes only a few moments to fill any section of the ship's hold 

 with live steam under heavy pressure. The steam acts as an 

 excellent fire extinguisher and does much less damage to the 

 cargo than water. 



RUBBER IN CELLULOID MANUFACTURE. 



In making various celluloid articles, such as simple cane and 

 umljrella handles that are only to be enlarged, a soft rubber core 

 is used. It is placed inside tlie celluloid tube, which is steeped 

 in boiling water and the hot water expands the rubber core, 

 thereby enlarging the tube. The rubber core is then withdrawn 

 and the tube placed in the mold. An enlarged celluloid tube 

 open at both ends is thus formed. 



Certain hollow objects arc made by introducing a rubber core 

 into a hollow block. By heating and pressure, the celluloid is 

 molded on this core, whicli is afterwards withdrawn. Handles of 

 sticks and umbrellas imitating thorn are made in this way. 



In the manufacture of celluloid umbrella or cane handles, 

 which are bent or twisted, a rubber core is used. The core is 

 of soft subber, spiral in form and introduced into a tube of cellu- 

 loid, the whole placed in boiling water. The rubber core ex- 

 pands by the action of the hot water and the celluloid tube 

 softens and assumes the shape of the rubber core. While in a 

 plastic state, the celluloid is bent or twisted into the desired 

 form, .\fter a short time has elapsed, the celluloid is cooled 

 sufficiently and the rubber core is withdrawn. The celluloid then 

 becomes rigid and retains its shape. The rubber core being elastic 

 expands lengthwise, while its diameter contracts under a stretch- 

 ing force and it is therefore easilv withdrawn. 



