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CF THE

FRANKLIN INSTITUTE

OF THE

State of Pennsylvania:

AND

MECHANICS' REGISTER.

DEVOTED TO

MECHANICAL AND PHYSICAL SCIENCE,

CIVIL ENGIN PERING, THE ARTS AND MANUFAOTURES,

AND THE RECORDING OF

AMERICAN AND OTHER PATENTED INVENTIONS.

EDITED

BY THOMAS P. JONES, M. D.

MEMBER OF THE AMERICAN PHILOSOPHICAL SOCIETY, OF THE ACADEMY OF NAT-

TRAL SCIENCEB, PHILADELPHIA, THE AMERICAN ACADEMY OF ARTS
AND SCIENCES, MASSACHUSETTS, AND CORRESPONDING MEM-

BER OF THE POLYTECHNIC SOCIETY OF PARIS.

NEW SERIES.

VOL. XVII.

PHILADELPHIA:
PUBLISHED BY THE FRANKLIN INSTITUTE, AT THEIR HALL;

THOMSON & HOMANS, WASHINGTON CITY; E. I. COALE & CO.
BALTIMORE; G. & C. CARVILL & CO., NEW YORK; AND

MONROE & FRANCIS, BOSTON.

Engin. Library

T T

.F834

OF THE

FRANKLIN INSTITUTE

Of the State of Pennsylvania,

AND

MECHANICS REGISTER;

DEVOTED TO

Mechanical & Physical Science, the Arts & Manufactures,

AND THE RECORDING OF

AMERICAN AND OTHER PATENTED INVENTIONS.

JANUARY, 1836.

Practical and Theoretical Mechanics.

Report of Experiments made by the Committee of the Franklin Institute of Pennsylvania, on the Explosions of Steam-Boilers, at the request of the Treasury Department of the United States. The Committee of the Franklin Institute on the Explosions of Steam-Boilers, respectfully present to the Secretary of the Treasury, their report of the experiments undertaken at the request of the department. The queries which were submitted by the committee, to the officer at whose request the experiments were instituted, * have formed the basis of the labours of the committee. They have

, however, availed themselves of the privilege accorded, of trying such other experiments as might grow out of the investigation, or as ihey might deem of special interest. The object of the experiments was to test the truth or falsity of the various causes assigned for the explosions of steam-boilers, with a view to the remedies either proposed, or which may be consequent upon the result of the inves. tigation. The causes being accurately known, the attention of ingenious men is led away from false suppositions, which can only waste their time and talent

, if taken as the basis of their plans for safety; greater hope is afforded of an efficient remedy; applications of an indirect, or it may be of a positively injurious sort, are avoided; and if the causes be found to be such as for the present

, to bafile ingenuity in their removal, the attention is directed more fix. edly towards the means of protection against the effects of such accidents. The committee hope that the results of their inquiries will not be found without fruit.

It was the aim of the committee to provide for the experiments an apparatus of such dimensions as to furnish results applicable to practice, without being so great as to be managed with difficulty, or to increase, unnecessarily, the danger incident to parts of the investigation. To arrange the apparatus and complete the details, they secured the services of an able and experienced

* The Hon. S. D. Ingham, late Secretary of the Treasury of the United States. VOL. XVII.--No. 1.- JANUARY, 1836.

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