1-EBRLARV I, 1921 



THE INDIA RUBBER WORLD 



327 



Pernambuco Rubber. See Mangabeira. 



Rubber Crop. Rubber gathered in the dry season; that is, from 

 June to October. From November to May floods render most 

 rubber areas impassable. 



Remanso Rttbber. a local name for Jequie rubber. See 

 Ceard. 



Rio Negro Weak Fine. See Weak Fine. 



S.\PIUM RuiiBER. The product of the Sapiiim jciiiam formerly 

 plentiful in the Guianas, graded as Centrals. See Centrals. 



SiPHONiA Rubber. An obsolete term for Para rubber. 



Sern'amby. See Coarse Para. 



Smoked Para. Rubber coagulated in thin superimposed films 

 by exposure to smoke, usually of palm nuts. See Fine Para. 



Soft Cure. A term applied to smoked Hevea from the Lower 

 Amazon containing more moisture than hard cured rubber. 



Santos Rubber. Hancornia rubber from the Brazilian port of 

 that name. See Mangabeira. 



Scrappy Negroheads. A second grade of coarse Para. See 

 Coarse Para. 



Tears. Small nodules of air-coagulated rubber. See Ceara. 



TuNO Rubber. .\ trade name for the product of the Castilloa 

 timu. Marketed in yellowish white, brittle balls, three to five 

 inches in diameter. It contains over 80 per cent resin and nearly 

 10 per cent of gutta-like hydrocarbons. Rare. 



Tuxpam Rubber. Castilloa rubber from the Mexican port of 

 that name. See Centrals. 



Upriver Para. Hevea rubber from the Upper Amazon, the 

 ports of shipping being Iquitos, Manaos and Para. It comes in 

 biscuits averaging 30 pounds in weight. It is divided into upriver 

 fine Para, or hard cure ; upriver medium and upriver coarse 

 Para. It comes specifically from the Brazilian states of Ama- 

 zonas, Matto Grosso and Acre : also from Bolivia and Peru. The 

 grades are in general Aniaznnas fine and coarse: further subdi- 

 vided as to river locality, as Madeira, Javary, Purus, Jurua, etc. 

 Bolivian fine and coarse and Peruvian fine and coarse. See Fine 

 Para.- 



Upper River .\ term used in connection with caucho from 

 Upper Amazon. See Caucho. 



Virgin Sheets Par.a. See Matto Grosso. 



Virgin Gum. An early terra for Central or South American 

 rubber other than Para. Obsolete. 



Virgin Rubber. The product of a tree indigenous to Colombia, 

 the Sapi'.im tolitncitse. It comes as sheet and is graded with Cen- 

 trals. See Centrals. 



Wear Fine. Hevea rubber collected from Heveas other than 

 the H. Rrasilicit.sis as the H. Cwancnsis, is classed as weak, 

 although coagulated in the same manner. It is softer, more resin- 

 ous and l.icks nerve. It is graded as Para weak fine, Purus weak 

 fine. Bolivian weak fine, Peruvian weak fine (Mollendo Peruvian 

 debil), Rio Negro weak fine. 

 White Para Rubber. See Matto Grosso. 



Xingu Rubber. Hevea rubber from the Lower Amazon afflu- 

 ent of that name. See Fine Para. 



The American custom of using abbreviations wherever 

 possible may result in real monetary loss to the user, instead 

 of. <oiving time. A case in point is the use of abbreviations in 

 cjnsalar invoices of goods shipped to Brazil, as a result of 

 which receivers of American goods at Brazilian ports are fre- 

 iiiiently subjected to fines. The Brazilian invoice form requires 

 consignors of merchandise to write out in full the name of the 

 country of origin of the goods and the country where the goods 

 are purchased in each of the columns provided for that purpose. 

 When it is considered that custom house officials discharging the 

 goods receive 50 per cent of the fine levied, the need for meticu- 

 lous care to conform to every regulation becomes at once ap- 

 parent. 



SPECIFICATIONS FOR STARTING AND LIGHTING 

 STORAGE BATTERIES FOR MILITARY AUTO- 

 MOBILE AND TRUCK SERVICE 



Tin-: Bureau of Standards has issued the linal revision of the 

 following specifications for military and truck service, pre- 

 pared by the Bureau with the cooperation of manufacturers and 

 the Electrical Equipment Subdivision on Storage Batteries. 



TYPE OF BATTERY 



The battery shall be of the lead-acid type, using flat pasted 

 plates and shall be constructed to withstand hard mechanical 

 service conditions. 



CAPACITY AND ARRANGEMENT 



Medh:m and Hl.wv Trucks 



X umber 

 of 



Cells 

 .3 ... 



Miniinutu Capac- 

 it)', Amp.-Hr. 



T-hr. "" 



Rate 



60 



72 



80 



48 



50 



Maximum Overall 

 Dimensions 



20min. 

 Rale 



31 



37 



35 



25 



24 



Length,^ 

 In. 



im 



U'A 

 19J4 



Width, 

 In. 

 7 'A 



7 'A 

 TA 

 TA 



Height, 

 In. 

 9J« 

 9-'A 

 9?4 



m 

 m 



*Xo allowance ni.''de for hold-down clamps. 



Passe.vger Cars axd Light Trucks 



Number 

 .:f 

 Cells 

 3 . .. 

 3 ... 

 3 ... 

 3 . -. 



3 . 



3 . 

 3^ . 

 6 . 

 6 . 

 6= , 

 6= , 



Minimum Capac- 

 ity, Amp.-Hr. 



5-hr. 



Rate 

 60 

 72 

 84 

 96 

 95 

 S4 

 95 

 90 

 36 

 48 



en 



48 



Maximum Overall 

 niiucnsions 



20 min. 

 Rate 



31 



37 



43 



50 



43 



43 



43 



45 



19 



25 



n 



25 



Length.' 

 In. 

 Wi 



13}l 

 15J« 

 20% 

 20H 



13!4 

 ISH 

 I7M 

 20 5< 



Assembly 



Side to side 



Side to side 



Side to side 



Side to side 



Side to side 



•Assembly 



Side to side 

 Side to side 

 Side to side 

 Side to side 

 Side to side 

 End to end 

 End to end 

 End to end 

 Side to side 

 Side to side 

 Side to side 

 End to end 



-Not to be continued as a standard site beyond present requirements. 

 CONSTRUCTION 



Connecting straps shall be of lead or lead-antimony alloy. 

 Plates of like polarity in each cell shall be integrally burned to 

 the respective straps. Straps are to be of pillar-post type of 

 sufficient size and strength to be an adequate conductor and sup- 

 port for the group of plates. 



Intercell connectors are to be of the "burned-on" type. The 

 voltage drop in the intercell connectors is not to exceed 10 milli- 

 volts per inch of distance between post centers, when discharging 

 at the 20-minute rate. Copper straps, when used, are to be lead 

 coated and provided with terminals of lead or lead-antimony alloy, 

 which are burned to the posts. Intercell connectors must not 

 obstruct the filling apertures. 



Plates shall be of good design and the best quality of materials 

 and workmanship. This is to be judged either by laboratory 

 tests or by a record of satisfactory field service at the option of 

 the purchaser. 



Separators shall be- fa) of prnperly treated wood corrugated 

 on the side next to the positive plate: or (b) of properly treated 

 wood as specified in (a) plus a perforated or slotted separator 

 of thin flexible hard rubber, placed between the positive plate and 

 the ribbed side of the wood ; or (c) of an approved rubber type. 

 The separators are to be held in place by suitable hold-downs. 



Terminal posts shall be plainly marked with the polarity as 

 follows : 



The positive terminal shall be marked POS or P 

 The negative terminal shall be marked NEC or N 



The terminal posts are to be in accordance with the S. A. E. 

 Standard for taper posts as follows : 



Inches 



Small diameter, negative post s^ 



Small diameter, positive post \i 



Taper per foot IW 



Minimum length of taper \\ 



