Combination Steel and Rod Track— Continued 



Fig. 1296 

 Three-Way Switch for Combination Track 



Fig 1297 

 Two-Way Switch for Combination Track 



The track hanger consists of two parts, connected by a short bolt, between which there is an 

 adjustment of 1 ,' 2 inches to take care of any unevenness in the joists to which the track is hung. 

 This adjustment is secured by means of a slot (Fig. 1289) in which the connecting bolt may be set 

 at any point desired. The hanger provides eight inches clearance between track and joists when the 

 adjustment is at center. 



The lower part of the hanger fits inside the track, as shown in Fig. 1289. The support is 

 immediately beneath the wheels of the carrier; no chance for the track to buckle with a heavy load. 

 All the hangers required for each section of track are slid into the track from the end before it is 

 hung. The hangers are small enough to work loosely inside the track, and are easily adjusted. 



A wedge- 

 shaped key 

 is furnished ^ V%- 



hha 



Fig. 1290 

 Brace for Combination Steel and Rod Track 



rattling and allows no 



shown in Fig. 1291. This prevents 

 easily removed at any time. 



The upper part of the hanger is made of ,'4x1 >^ inch steel, 

 the track) is made of malleable iion. The hanger is secured to 

 or screws. 



The rod track is connected 

 to the rigid track just inside 

 the door opening by means of 

 a malleable clamp, 7^2 inches 

 long, and is secured by 

 bolts, as shown in Fig. 1292. 



roreac 

 ger. When 

 the hanger 

 is in place 

 the key is 

 dropped into 

 the track 

 and driven 

 under it, as 

 end play in 



Fig. 1291 



Showing How Hanger is 



Wedged 



the track. The keys are 



The lower part (which fits inside 

 the joist by means of four nails 



Fig. 1292- 



Side Removed To Show How Steel and Rod Tracks Are Joined. 

 No Chance To Pull Apart 



d track. The track is smooth at the point of transfer 



Twoof these bolts pass through 



the brace shown in Fig. 1 290, 



bringing all of the strain from 



the wire track on the brace, and not on the rig 



and does not jostle the carrier as it passes from the 



The brace (Fig. 1290), is 64 inches long, and provic__ - , ■ , r j l l .k 



for a rod track. The heavy casting to which it is connected at the lower end is bolted through the 

 door jamb, as illustrated. It allows 8 inches clearance between the jamb and the track. 



The rod track is anchored to a post in the yard as described on page 188. 



th€ 



Steel to the rod track, 

 ides the most secure anchorage ever 



levisec 



Page One hundred sixty-six 



