LATCHES, LOCKS, AND FASTENINGS 



105 



HINGES AND PIVOTS FOR COVERS AND FLEXIBLE JOINTS 



Fig. 119.— Com- 

 mon cover hinge 

 with pin tiglit in 

 the cover and loose 

 in the hinge lugs. 



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Fig. 120.— With 

 the end peened, 

 the pin can be 

 made a loose fit in 

 all lugs. 



Fig. 121.— a 

 plain pin with two 

 cotters can be used 

 in place of a 

 peened rivet. 



Fig. 122.— a 

 double tapered 

 hole in cover lugs 

 with pin fiitting 

 tightly in outer 

 lugs. 



Fig. 123. — Sheet-metal cover 

 bent around the hinge pin. 



Fig. 124. — A tapered pin makes 

 hinge adjustable. 



Fig. 125. — Combination straight 

 and taper-pin hinge. 



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Fig. 126. — Hardened and ground washers to 

 prevent wear. A, hinge lugs milled to prevent 

 washers from turning. B, washers retained by a 

 pin. 



Fig. 127. — Pivot bearing with 

 shouldered center pin and adjust- 

 able cone-pointed screw with lock. 



Fig. 128. — A design for severe duty and Fig. 129. — Capped eccentric pin bear- 

 long life. ing makes cover adjustable. 



Fig. 130.— Pivot bear- 

 ing with hardened con- 

 ical-pointed pins. 



1 



Fig. 131.— 

 Sheet-iron 

 cover swinging 

 on headed pin 

 which is peened 

 over at the 

 opposite end. 



Fig. 132.— Lever 

 arm pivoted on 

 shouldered stud 

 and retained by 

 washer. 



Fig. 133.— Light 

 cast-iron cover pivot- 

 ing on stud. 



Fig. 134.— For 

 heavier covers, 

 the stud is 

 shouldered and 

 the casting coun- 

 terbored. 



