February 1, 1914/ 



THE INDIA RUBBER WORLD 



259 



and supports four upright guides C upon which reciprocates the 

 carriage D which is moved vertically by the screws li and F. The 

 screw £ is actuated by the hand wheel (," and communicates 

 motion to the screw F through the chain //. Two horizontal 

 shafts /, having their bearings in the carriage D. carry rollers 

 / against which the tire K rests in revolving. Two adjustable 

 verticle rollers L hold the tire in position during its revolution. 

 In order to rotate the rollers / for turning the tire the follow- 

 ing mechanism is employed: The driving shaft j1/. provided 

 with a clutch A', bears a worm O which meshes with a worm 

 gear /' mounted on the shaft Q. This shaft bears a sprocket 

 wheel R which drives the cone pulley S through the chain T. 

 A second cone pulley U. which is driven by the belt / ', drives 

 the worm gear W which is mounted nn the upper end of the 

 splined shaft -V. This shaft drives a |)air of beveled gears .V 

 which in turn drive the rollers /. 



The mechanism for winding or unwinding a strip of material 

 about the tire during its revolution on the rollers /, embodies 

 another mechanism as follows: Mounted on the upper part of 

 the frame is a second frame A' which is in the shape of a horse- 

 shoe. On the front face of this frame are a number of flanged 

 rollers S' which bear a broken ring or annulus C. Also secured 

 to the face of the frame are a second series of flanged rollers 

 D' which bear a second annulus £'. These two annuli are 

 mounted eccentrically to each other ; that is, the center of 

 rotation of the lirst is at /-' and of the second at C\ These 

 two parts are connected by links //' which hold them together 

 but allowing them to revolve on different axes. The two broken 

 rings are revolved by means of a belt /' passing over a roller 

 on the shaft P. over a series of rollers K', over roller /,' and 

 thence around the outer ring C. In order to maintain a uniform 

 tension in the belt, a tightening device A/' is employed. Motion 

 is communicated from the shaft Q through the sprocket chain 

 R' to the shaft J' and thence to the belt /' 



The material to be wrapped around the tire is wound upon 

 a bobbin 5' which rotates against an adjustable tension spring 

 T' in order to keep the wrapper at an even tension. The shaft 

 upon which the bobbin is mounted extends through a link or 

 crank U' connecting the two annuli. The end of this shaft is 

 drilled to receive a pin I"'. If it is desired to wrap the tire, 

 this pin is disengaged from the bobbin shaft so that the bobbin 

 is free to turn independently of the link V. If a wrapper is 

 to be removed from a tire and wound up on the bobbin so that 

 it can be used again, the pin I' is engaged with the bobbin 

 shaft so that the latter cannot rotate independently of the annuli. 

 Thus, as it passes around the tread of the tire the wrapper will 

 be removed and wound up on the bobbin. 



By means of a flanged roller on the screw shaft 1". which i- 

 operated by the hand wheel Z, the belt V may be moved back anil 

 forth over the cone pulleys to regulate the speed at which tin 

 tire is revolved. [U. S. Patent No. 1,079,601, granted to C. 

 Kuentzel and assigned to the Goodyear Tire & Rubber Co., 

 Akron, Ohio.] 



NEW BELT MAKING MACHINERY. 



The two illustrations herewith show some new forms of 

 apparatus designed for the manufacture of balata belting. 

 Fig. 1 shows a belting calender which is used for spreading 

 on the outer covering of balata after the fabric of the belt 

 has been built up. It is also used for consolidating the belt 

 after being previously folded on the hot table. The top roll 

 A is suitably grooved so as to leave an impression on the 

 surface of the belt. This roll may be adjusted vertically by 

 means of the hand wheel B operating worms C and worm 

 gears D the same as in the ordinary calender. The belt is 

 inserted between guide rollers E and passes under the steam 

 heated gage F between the guides G, which prevent the 

 balata from overrunning the edges of the belt. Scraper 

 gages, not shown, are provided between the gage F and 



the calender rolls to trim the edge of the belt. The machine 

 is driven throui;!) a pair of riMluction gears and countershaft 



. C ^f. D.C 



B.-\i..\T.\ Belting Calender. 



either by a belt or l)y direct connection through spur gears 

 to the main drive shaft. 



Fig, 2 shows a section of a hot table for building up balata 

 Ijclting in great lengths. The whole table, only a part of 

 which is shown herewith, is 130 feet long and 4 feet wide. 

 It is built in short hollow sections of riveted mild steel plates 

 carried on steel channels and cast iron stands from the floor, 

 each section forming an individual steam chest or hot plate. 

 The heating and draining arrangements are designed to pro- 

 vide a uniform temperature throughout the whole length of 



Steam Table for Building Up Rt'DnER, 



the table, the separate sections being connected with a com- 

 mon steam line. Such hot tables can be constructed in any 

 length and width to meet the requirements of any size of belt, 

 [Bertrams Limited. Edinburgh, Scotland. 1 



A NEW HUBBEK TRIMMED AUTOMOBILE CURTAIN. 



A new style of automobile side curtain — known as the "New 

 Scott" — has been brought out by a Western manufacturer. This 

 curtain is adjusted and operated from the inside of the car by 

 means of fixtures which are easily attachable. The curtains are 

 held securely in place when in use by hooks or other simple 

 fasteners, and when released automatically roll up out of sight 

 They are trimmed in heavy rubber drill, in drab or black, as pre- 

 ferred, or may be had with imitation leather or mohair trim. 

 [Star Storm Front Co., Troy, Ohio.] 



