73 parts chain hoists

manual hoist, looks ordinary, compact, easy to use, but if you really dissect chain hoists, which is composed by the 73 parts,  takes you into the mysterious seemingly simple yet complex hand Pull chain block  internal structure:
1 hook; 2 double reed; 3. Ended rope clip
4 no head rivets; 5.  load chain ; 6. Nameplate
7 Phillips screws; 8 spring washers; 9. Casing
10 Hexagon flat nut; 11 wall panels; 12. Roller tablets
13 gears; 14. Tetradentate minor; 15 five tooth axis
16 circlip; 17 spline bore gear; 18. Hook beam
19 rod; 20. Ball; 21 set screws
22 bearing outer ring; 23. Guide column; 24. Lifting sprocket
25 The left wall; 26. Detent pins; 27. Pawl
28. Detent spring; 29.   Brake seat; 30. Friction plate
31 Hand chain; 32. Cotter pin; 33. Steel sleeve
34 right wall; 35. Groove flat hexagonal nut; 36. Hanging chain plate
37 baffle; 38. Baffle pin; 39. Revocation
40 Secure the bezel; 41. Latch; 42. Ratchet
43 connecting ring; 44. Lift wheel; 45. Bracelet wheel cover
46 Cruise baffle; 47. Tour axle; 48. Closed under the framework
49 cruises; 50. Needle; 51. Hex bolts
52 ring; 53 next frame; 54. Revoked under the framework
55 beams; 56. Cotter pin; 57. Horizontal pin
58 Cruise rack; 59. Hook shaft; 60. Shaft Collar
61 Shaft washer; 62. Upstream shaft wheel; 63. Cruises
64 needle; 65. Cruise ring; 66. Framework under
67 Shaft washer; 68. Downstream shaft wheel; 69 The next cruise ring
70. Needle; 71 next cruise; 72. Shaft Collar
73 under the hook shaft.