

J 



Louden Bird-Proof Barn Door Track and Hangers— Fig. 911 



Specifications 



For all kinds of doors. large and small. 



Track is tubular and trolleys travel inside. 



Trolley cannot get off the track. 



Track is made of No. 14-gauge special steel. 



Dimensions of track inside, I 'g inches wide by 2i'6 



inches deep. 

 Supporting brackets for track of steel with embossed 



reinforcements. 

 Wall brackets of refined malleable iron. 

 Supporting wall brackets may be placed 36 inches 



apart, for heavy doors, space 24 inches apart. 

 End stops and splices for track packed with trolleys 

 Track is furnished in 4-ft., 6-ft., and 8-ft. lengths. 

 Weight of track per foot, I ^^ pounds. 

 Weight of supporting brackets per dozen pair, 9 pounds. 



^ y^ u 



Special Features 



Fig. 911 



Patented June II. 1912 



Trolleys Completely Enclosed. The only opening is the narrow slit beneath the track. There 

 is no chance for the trolleys to be clogged or derailed. The track is absolutely proof against nesting birds, 

 trash, rain, snow or sleet. 



Flexible at Two Points. The joint in the hanger strap allows the door to swing out away from the 

 building, frequently avoiding breakage by crowding stock. The joint in the track support permits the 

 track itself to swing out from the building, making it possible to easily dislodge trash and dirt which may 

 accumulate behind the track and rot out the siding. This double flexibility allows the door to fit snugly 

 without sticking or binding. 



Roller Bearing Tandem Trolleys. The Trolley Wheels revolve on hardened steel roller bearings 



around a tempered steel shaft. Always roll easily. A light push will open or close the heaviest door. 



Trolleys Run on Level Tread. The Bird-Proof Track is square, not oval. The level tread reduces 



friction to the minimum and overcomes the wedging tendency frequently found in oval tracks which support 



Iieavy doors. 



Simple and Strong in Construction. The form of the Bird-Proof 

 Track, and the special grade of steel used in its manufacture, combine to 

 give it wonderful strength and rigidity. It is further strengthened by the 

 curved lips on the under side of the track. Will not sag under the weight 

 of heavy doors. 



Door Hanger Trolleys — Fig. 902 



Specifications 



Frame of trolley of pressed steel with embossed reinforcements. 



Supporting loop for strap that carries door of refined malleable iron. 



Straps that carry door of No. 12 gauge steel, I •'4 inches wide. 



Straps are furnished regular for doors I ^4 inches thick. 



Track wheels are of special quality gray iron. 



Track wheels are 2 inches in diameter and are roller bearing. (See 



Fig. l9BandC, Page 62.) 

 Bolts for attaching hangers to doors, also end stops and splices for 



track are packed with each set of trolleys. 

 Each set of hangers packed in neat paper box. 

 Weight per dozen sets, 72 pounds. 



Fig. 961 



Showing End View of Track 

 with End Stop Removed 



Metal End Stop 



Completely Closes 



Track 



Page Sixty 



