International Textbook Press
Scranton, Pa.
CONTENTS
Note.—This book is made up of separate parts, or sections, as indicated by their titles, and the page numbers of each usually begin with 1. In this list of contents the titles of the parts are given in the order in which they appear in the book, and under each title is a full synopsis of the subjects treated.
| HOISTING, PART 3 | |
| Pages | |
| Hoisting Appliances | [1-43] |
| Hoist Indicators | [1-5] |
| Column indicators; Dial indicators; | |
| Special indicators. | |
| Drums and Reels | [6-20] |
| Cylindrical Drums | [7-8] |
| Conical Drums | [9-16] |
| Hoisting with cylindrical drums; | |
| Hoisting with conical drums; | |
| Comparison of cylindrical and conical drums. | |
| Flat Rope Reels | [17-20] |
| Rope Wheels | [21-26] |
| Koepe system; Whiting system; | |
| Modified Whiting system. | |
| Rope Fastenings | [27] |
| Clutches | [28-31] |
| Jaw clutch; Band friction clutches; | |
| Beekman friction clutch. | |
| Brakes | [32-43] |
| Block brake; Post brake; Strap brake; | |
| Differential brake; Power for brakes; | |
| Differential lever; Power brakes; | |
| Crank brake. | |
| HOISTING, PART 4 | |
| Hoisting Appliances | [1-51] |
| Sheaves | [1-5] |
| Cast-iron sheave; Wood-lined sheaves; | |
| Diameter of sheave; | |
| Rollers and carrying sheaves. | |
| Cages for Vertical Shafts | [6-11] |
| Construction of cage; Safety catches; | |
| Multiple-deck cages. | |
| Automatic Dumping Cages | [12-16] |
| Definition; Slope, or inclined shaft | |
| hoisting; Slope carriage. | |
| Skips, or Gunboats | [17-22] |
| Definition; Method of loading skips; | |
| Method of dumping skips; Skip cage. | |
| Buckets | [23] |
| Car Locks | [23-24] |
| Cage Guides | [25] |
| Landing Fans, or Keeps | [26-28] |
| Common forms of fans; Hydrostatic fans; | |
| Pneumatic fans; Cage chairs. | |
| Head-Frames | [29-45] |
| Head-frames in general; Types of head-frames; | |
| Examples of various types; | |
| Head-frame specification. | |
| Detaching Hooks | [46-47] |
| Signaling | [48-51] |
| Hammer-and-plate signal; Electric bells; | |
| Speaking tubes; Pneumatic gong signal; | |
| Telephones. | |
HOISTING
(PART 3)
Serial 851C Edition 1
HOISTING APPLIANCES
HOIST INDICATORS
1. The hoist indicator is a mechanism attached to the drum shaft of a hoisting engine to show the hoisting engineer the position of the cage or skip in the shaft throughout the time of hoisting. The use of such indicators is sometimes required by law, but there is a great diversity of opinion as to the advisability of using them. The objections to them are that they are liable to get out of order, and that in general the use of any automatic device that tends to relieve the hoisting engineer of responsibility and constant attention to his engine is not to be commended. A hoisting engineer, however, depends for his stopping point mainly on a mark made on the rope, or on the drum, or on both, and uses an indicator mostly as a guide for the position of the cage during the hoist.