64 



THE INDIA RUBBER WORLD 



[NllVEMHEk I, 1905. 



VACUUM DRYING OF RUBBER. 



THE vast economic value of this process, the great rapidity 

 with which the drying of materials in vucxto is accom- 

 plished, the low temperatures at which it can be carried on, the 

 great saving in fuel, space, and labor, the improvement vacuum 

 drying exercises upon the materials, the large daily production 

 of a comparatively small apparatus when compared with the 

 space occupied by drying rooms, etc., all of which have become 

 so well established and known at this date through the many 

 vacuum drying plants operated in the United States and in 

 Europe, that no more need be added in its praise. 



To Mr. A. P. Mencle is due to have been the first in the 

 United States to construct vacuum drying chambers and to 

 bring them to successful operation in his own chemical and 



color works, thence advocating the adoption of this econcmic 

 process among the various American industries. Dr. Mende's 

 experience in this line runs over a period of 1 5 years and hun- 

 dreds of materials of all kind came to his hands for drying in 

 vacuo ; the results of which are today embodied in the vacuum 

 apparatus that are now built and sold by Messrs. Norman Hub- 

 bard's Sons Machine Works, Nos. 265-267 Water street, Brook- 

 lyn, N. Y.. and where a series of testing plants are operated for 

 the convenience of prospective patrons. 



Messrs. Norman Hubbard's Sons Machine Works offer the 

 apparatus in rectangular and in cylindrical styles, in all prac- 

 tical dimensions, made of cast iron, wrought iron or steel, with 

 plate shelves or shelf coils inside, or in shape of vacuum tunnels 

 for use of racks and cars of any description, all in first class 

 workmanship and at reasonable prices. 



RECTANGULAR VACUUM CHAMBER. 



CYLINDRICAL. VACUUM CHAMBER. 



REVIEW OF THE CRUDE RUBBER MARKET. 



EARLY in the month just closed a decline in prices be- 

 gan, which continued for a fortnight, since which time 

 the lower level then reached has remained practically 

 without change, though at the end of the month the 

 market presents a condition of more firmness. The decline first 

 applied to Pard sorts, following reports of larger arrivals at the 

 primary markets, and in view of some of the larger consumers 

 being apparently well provided with supplies. Later the de- 

 cline extended to Africans and other medium sorts. Pending 

 the important .Antwerp sale of October 23, when over 500 tons 

 were to be offered, and a feeling prevailed that a lower standard 

 of 'prices would result, the market, particularly for Africans, be- 

 came very quiet. The result of the sale, however, was t'lat 

 higher prices were realized for the better qualities than had 

 prevailed previously, and in consequence there has been a gen- 

 eral stiffening in prices of all sorts. 



Receiptsat Pard (including Caucho) since the beginning of 

 the crop season have been as follows : 



1902. 1903. 1904. 1905. 



July tons l2qo 1280 1250 1450 



August 1370 1230 1260 1300 



September 1670 2010 1780 2200 



October 2280 2440 2820 <j2goo 



Total 6600 6960 7110 7850 



l>— To October 28. 1 



Following is a statement of prices of Pard grades, one year 

 ago, one month ago, and on October 31 — the current date : 



October I, '05. 



127(8128 



none here 



I2g@i30 



132(3133 



7i@ 71 



nODe here 



92(.d 93 



none here 



73@ 74 

 85(a) 86 



PARA. November 1, '04 



Islands, fine, new Ii2(a'ii3 



Islands, fine, old none here 



Upriver, fine, new Ii5@ii6 



Upriver, fine, old none here 



Islands, coarse, new 64® 65 



Islands, coarse, old none here 



Upriver, coarse, new 88(3 89 



Upriver, coarse, old none here 



Caucho (Peruvian) sheet 67® 68 



Caucho ( Peruvian ) ball 7 7@ 78 



The decline in Africans has been less marked 

 are without change, as follows : 



AFRICAN. 



Sierra Leone. I stquality 100(8101 



Massai. red ioo(3ioi 



Benguella 79® So 



Cameroon ball 6g@ 70 



Accra flake 26® 27 



Lopori ball, prime. .. . I09®II0 

 Lopori strip, prime. .. . 92® 93 

 Madagascar, pinky.. . . go® gi 

 Ikelemba io9®iio 



Late Para cables quote: 



Per Kilo. 



October 31. 



Il8@II9 



none here 



1 2 1 (S 1 2 2 



i32(St33 



68® 69 



none here 



89® go 



none here 



70® 71 



85® 86 



some grades 



CENTRALS. 



Esmeralda, sausage. . .82 ®83 



Guayaquil, strip 70 ®7i 



Nicaragua, scrap .. . .Si @£2 



Panama, slab 62 ®63 



Mexican, scrap 81 ®82 



Mexican, slab 60 @62 



Mangabeira. sheet. .. .70 @7i 

 EAST INDIAN. 



Assam 95 ®96 



Borneo 44 ©45 



Islands, fine 5*430 



Per Kilo. 



Upriver, fine 6|i3oo 



