The Use of Ropes and Tackle

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MONTHLY BULLETIN

OF THE STATE COLLEGE OF WASHINGTON
PULLMAN, WASHINGTON

VOLUME IVDECEMBER, 1921NUMBER 7

The Use of Ropes
and Tackle

By H. J. DANA
Specialist in Experimental Engineering
and
W. A. PEARL
Instructor in Mechanical Engineering

ENGINEERING BULLETIN NO. 8

Engineering Experiment Station
H. V. CARPENTER, Director

1922

Entered as second-class matter September 5, 1919, at the
postoffice at Pullman, Wash., under Act of Aug. 24, 1912

The ENGINEERING EXPERIMENT STATION of the State College of Washington was established on the authority of the act passed by the first Legislature of the State of Washington, March 28th, 1890, which established a “State Agricultural College and School of Science”, and instructed its commission “to further the application of the principles of physical science to industrial pursuits.” The spirit of this act has been followed out for many years by the Engineering Staff, which has carried on experimental investigations and published the results in the form of bulletins. The first adoption of a definite program in Engineering research, with an appropriation for its maintenance, was made by the Board of Regents, June 21st, 1911. This was followed by later appropriations. In April, 1919, this department was officially designated, Engineering Experiment Station.

The scope of the Engineering Experiment Station covers research in engineering problems of general interest to the citizens of the State of Washington. The work of the station is made available to the public through technical reports, popular bulletins, and public service. The last named includes tests and analyses of coal, tests and analyses of road materials, testing of commercial steam pipe coverings, calibration of electrical instruments, testing of strength of materials, efficiency studies in power plants, testing of hydraulic machinery, testing of small engines and motors, consultation with regard to theory and design of experimental apparatus, preliminary advice to inventors, etc.

Requests for copies of the engineering bulletins and inquiries for information on engineering and industrial problems should be addressed to Director, The Engineering Experiment Station, State College of Washington, Pullman, Washington.

The Control of the Engineering Experiment Station is vested in the Board of Regents of the State College of Washington.

BOARD OF REGENTS
Hon. Louis F. Hart, Governor of the State,	Olympia
R. C. McCroskey,	Garfield
Adam Duncan Dunn,	Wapato
Edwin A. Ritz,	Walla Walla
A. W. Davis,	Spokane
J. H. Hulbert,	Mt. Vernon
E. O. Holland, Secretary Ex-Officio, President State College	Pullman

ENGINEERING EXPERIMENT STATION STAFF
Director,	H. V. Carpenter, B. S., M. S.
Experimental Engineering,	Homer J. Dana, B. S., M. S., M. E.
Electrical Applications,	Philip S. Biegler, B. S., M. S., E. E.
Electrical Standardizations,	Harry F. Lickey, B. S.
Automotive Engineering	Aschel C. Abell, B. S.
Steam Engineering,	A. R. Nottingham, M. M. E.
Mechanical Design,	E. B. Parker, B. S.
Engineering Materials,	G. Everett Thorton, B. S.
Gas Power,	William A. Pearl, B. S.
Steam Power,	Robert L. Rhoads, M. S.
Mining Engineering,	Louis O. Howard, A. B., M. E.
Metallurgical Engineering,	Chester G. Warfel, M. E.
Economic Geology,	Olaf P. Jenkins, A. B., A. M.
Irrigation and Structures,	Osmar L. Waller, Ph. B., Ph. M.
Municipal Engineering,	Morris K. Snyder, B. S.
Highway Engineering,	Howard E. Phelps, B. S., C. E.
Topographical Engineering,	Frederic W. Welch, B. S., C. E.
Architectural Engineering,	Rudolph Weaver, B. S.
Agricultural Engineering,	L. J. Smith, B. S.
Physics,	Brenton L. Steele, B. A., M. A.
Chemical Engineering,	Clare Chrisman Todd, B. S., Ph. D.

TABLE OF CONTENTS

LIST OF ILLUSTRATIONS	5
SOURCES OF MATERIAL	7
INTRODUCTION	8
KNOTS	9
SPLICES	25
HITCHES	28
LASHINGS	43
TACKLE SETS	45
HOISTS	53
TRANSMISSION CABLES	55
TEXTILE ROPE DATA	57
WIRE ROPE DATA	58
SPLICING TRANSMISSION CABLES	62
POWER TRANSMISSION TABLES	66
LIST OF ENGINEERING BULLETINS	68

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