October i, 1908.] 



THE INDIA RUBBER WORLD 



27 



New Rubber Factory Appliances. 



APPARATUS FOB REFINING RUBBER. 



A RECENT patent relates to an improvement in mechanism 

 for cleaning and refining vulcanized scrap rubber, such 

 as footwear and tires, which have been ground up pre- 

 paratory to devulcanizing. 



The machine — of which a sectional side elevation is shown in 

 a drawing on this page — consists of a long, narrow trough, having 

 at regular intervals gates or dams. The trough is set at a slight 

 angle and is supplied with water which, together with the ground 

 up stock to be refined, is fed into its upper end, from where 't 

 passes through the several compartments and over the succc:- 

 sive gates to the lower end of trough, where the stock is de- 

 livered over a 'screen to a devulcanizer car, while the water 

 passes through a screen to the sewer or tank as desired. 



While the material is passing over the gates and to the screen 

 the refuse, such as sand, gravel, or particles of metal substances. 

 will settle by gravity into the bottom of the compartment formed 

 by the gates. These gates can be adjusted separately to any 

 angle desired, or can be adjusted all together by means of a 

 hand-wheel on a rod connected to all the gates. 



When a batch of stock has been run through the machine aiin 

 it is desired to remove the refuse material which has settle ! 

 by specific gravity to the bottom of compartments, the gates can 

 all be raised at once by means of a lever, which, by pressin,' 

 down, raises all the gates simultaneously up from the bottom of 

 machine ; the conveyor and screen are raised up at the discharge 



EDRED W. CLARK'S STRAINER FIXTURE. 



Three cuts on this page relate to a new strainer fixture for 

 sieving "shoddy" or reclaimed rubber. This fixture is threaded to 

 screw into the end of the machine same as the head, and by 

 unscrewing the four tail nuts the gate can be opened to change 

 or clean the plate. The plates are steel, J/^-inch thick, and 3/16- 

 inch holes drilled in a 7-inch circle. In front of this plate is a 

 wire screen &'/> inches square, of any size mesh desired, and as 

 fast as it fills it can be cleaned or replaced. [Edred W. Clark, 

 Hartford, Connecticut.] 



.V New Rubber Spre.ading Machine, 



■^////////M. 



Section.^l View of Maurice C. Clark's App.-^ratus for Refining 

 Vulcanized Scrap Rubber. 



end of machine, and by turning the water on the waste material 

 in bottom of the machine is carried by flow of water and discharge 

 through the pipe in the bottom of the discharge end of machine. 

 The inventor of this apparatus is Mr. Maurice C. Clark, of 

 Providence, Rhode Island, to whom the rubber industry is in- 

 debted already for so many new factory appliances. It is pro- 

 tected by United States patent No. 890,497. 



Patent No. 890,498, also issued to Mr. Clark, relates to an 

 apparatus for automatically handling and conveying rubber stock 

 to be reclaimed through the successive operations from cracking 

 up to the devulcanizing car. 



RUBBER SPREADING MACHINE. 



The new spreading machine shown here is designed for 

 spreading a thin coating of rubber on cloth. The cloth to be 

 coated is wound up on a wooden roll, placed in bearings on the 

 front of the machine, and passed over an accurately ground rubber 

 roll against which the spreading is done. 



The spreading knife is mounted in housings at its ends, and is 

 raised or lowered to al'ow for different thicknesses. Adjustable 



[Gate open with plate in.] 



[Gate open with plate nut.| 



Clark's Strainer Fixture for Sieving Shoddy. 



[Gate closed with plate in. J 



