THE INDIA RUBBER WORLD 



[Decembls; i, 1919. 



New Machines and Appliances. 



HERRINGBONE REDUCING GEAR DRIVES. 



COMPi.ETK drive units consisting of a pair of herringbone 

 gears and pinions enclosed in an oil-tight case for reduc- 

 ing the speed of an electric motor to mills or calenders 

 are necessary equipment in every rubber mill. The accompany- 

 ing illustration of a vertical calender drive shows the reducing 

 gear commonly used to connect 66-inch calenders with 100 h.p. 

 950 r.p.m. motors. 



The gears are made of furnace-annealed steel castings, the 

 pinions, of hammered open-heanh steel forgings, are made in- 

 tegral wHh the pinion shaft, and the shafts are of open-hearth 

 steel forgings. The low speed, or gear bearings are cast inte- 

 gral with the main frame and fitted with removable split shells 

 of cast steel, babbitted. High speed, or pinion bearings consist 

 of babbitted pillow blocks bolted to the frame. For rebabbit- 

 ting or other repairs the pinion bearings may be readily taken 

 down and the shells easily removed from the gear bearings. 

 Genuine babbitt, or such other high-grade bearing metal as is 

 most suitable, is used in all bearings. All bearings have oil 

 ring lubrication, the oil being supplied by separate reservoirs 

 below the gear and pinion shafts. Oil for lubrication of the 



Vkkii 



i'RIVE. 



gears is kept separate from that in the bearing reservoirs by 

 throwers and retainers on the gear and pinion shafts. 



The main frames are made of iron castings of heavy section 

 and proper dimensions to obtain rigidity. They are machined 

 to carry the gear and pinion bearings in correct alinement, and 

 are provided with foundation bolt holes of proper size. 



Gear covers for all drives are entirely separate from the main 

 frames, and form an oil reservoir for lubricating the gears. 

 They are made of cast iron split horizontally in the center line 

 of the gear and pinion shafts, and are machined and fitted to- 

 gether to obtain oil tightness. Covers are attached to the main 

 frame in proper position by means of machine bolts. Oil gages, 

 oil drains, also inspection and oil supply openings, are provided. 

 (Fawcus Machine Co., Pittsburgh, Pennsylvania.) 



HYDRAULIC BICYCLE TIRE PRESS. 



The use of the formerly plebian bicycle is said to be rapidly 

 increasing in popularity and in consequence bicycle tire makers 

 are planning to increase materially their future production. 



However that may be. ihe 

 presS-vulcanizer, with its 

 novel features is of 

 more than passing in- 

 terest 



The press is made in 

 two sizes for 26 and 28 

 inch bicycle tires. It is 

 operated by two rams 

 one of which closes the 

 press and at the same 

 time the other auto- 

 matically expands the 

 collapsible core which 

 is made in eight seg- 

 ments. The loose tread 

 ring for forming the 

 pattern of the tire is not 

 shown in the picture, ■ 

 but is fitted to the col- 

 umns and is easily 

 changed to enable the 

 same side rings and core 

 to be used with vary- 

 ing tread rings to pro- 

 duce any desired pat- 

 terns. The time of 

 vulcanization varies from fi 

 & Co., Limited, Manchestei 



L-companymg illustraiion of a British 



icvcLE Tire Press Vvlc.\nizer. 

 o seven minutes. (Francis Shaw 



England.) 



Wood Calender 



SOLID WOODEN SHELLS. 



The wooden shell formerly universally used in rubber fac- 

 tories was built in two pieces held together by glue and dowels 

 reinforced at the ends with flat iron rings held in place by 

 screws. Such shells 

 frequently fell apart 

 and have been prac- 

 tically superseded b\ 

 metal shells. 



Solid wooden shell.s 

 turned and bored 

 from one piece and 

 reinforced against 

 splitting by special 

 cast rings sunk deeply into the ends, are made for the 

 rubber manufacturing trade and other industries. They may be 

 used either with wooden or metal center bars and are found very 

 satisfactory. (Adolph Martin Sons, Inc., Passaic, New Jersey.) 



A NOVEL FACTORY SIGNAL. 



The Klaxocator is an electrical code calling mechanism which 

 will signal either audibly with horns, bells or whistles, or by 

 electric lamps placed at any number of points throughout a 

 factory. Its operation is entirely automatic after it has been 

 set for a given code number by the operator. 



While it is used chiefly for summoning officials, department 

 heads and production foremen to the nearest telephone, it may 

 be utilized for fire alarms, danger warnings, as an extension 

 to telephone bells in noisy places, for signals between depart- 

 ments, for sounding the time of beginning and stopping work, 

 or giving warning that power, light or water is to be cut off. 



These code signals are sounded simultaneously at as many 

 points as signal stations are installed, or shown by lights, ac- 



