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On Over Manufacturing
284. One of the natural and almost inevitable consequences of...

Distinction Between Making And Manufacturing
163. The economical principles which regulate the application...

Economy Of The Materials Employed
77. The precision with which all operations by machinery are ...

On The Method Of Observing Manufacturies
160. Having now reviewed the mechanical principles which reg...

Of Price As Measured By Money
201. The money price at which an article sells furnishes us ...

Of Copying By Punching
133. This mode of copying consists in driving a steel punch ...

On The Effect Of Taxes And Of Legal Restrictions Upon Manufactures
414. As soon as a tax is put upon any article, the ingenuity ...

On A New System Of Manufacturing
305. A most erroneous and unfortunate opinion prevails among...

Of The Identity Of The Work When It Is Of The Same Kind And Its Accuracy When Of Different Kinds
79. Nothing is more remarkable, and yet less unexpected, than...

Sources Of The Advantages Arising From Machinery And Manufactures
1. There exists, perhaps, no single circumstance which disti...

On The Duration Of Machinery
340. The time during which a machine will continue to perform...

On The Position Of Large Factories
277. It is found in every country, that the situation of lar...

Saving Time In Natural Operations
47. The process of tanning will furnish us with a striking i...

Of Copying By Stamping
128. This mode of copying is extensively employed in the art...

On Combinations Of Masters Against The Public
376. A species of combination occasionally takes place among...

Of Copying By Casting
105. The art of casting, by pouring substances in a fluid st...

Printing From Surface
91. This second department of printing is of more frequent a...

On Contriving Machinery
318. The power of inventing mechanical contrivances, and of ...

Enquiries Previous To Commencing Any Manufactory
298. There are many enquiries which ought always to be made ...

Of Copying By Moulding
112. This method of producing multitudes of individuals havi...

Extending The Time Of Action Of Forces

45. This is one of the most common and most useful of the
employments of machinery. The half minute which we daily devote
to the winding-up of our watches is an exertion of labour almost
insensible; yet, by the aid of a few wheels, its effect is spread
over the whole twenty-four hours. In our clocks, this extension
of the time of action of the original force impressed is carried
still further; the better kind usually require winding up once in
eight days, and some are occasionally made to continue in action
during a month, or even a year. Another familiar illustration may
be noticed in our domestic furniture: the common jack by which
our meat is roasted, is a contrivance to enable the cook in a few
minutes to exert a force which the machine retails out during the
succeeding hour in turning the loaded spit; thus enabling her to
bestow her undivided attention on the other important duties of
her vocation. A great number of automatons and mechanical toys
moved by springs, may be classed under this division.

46. A small moving power, in the shape of a jack or a spring
with a train of wheels, is often of great convenience to the
experimental philosopher, and has been used with advantage in
magnetic and electric experiments where the rotation of a disk of
metal or other body is necessary, thus allowing to the enquirer
the unimpeded use of both his hands. A vane connected by a train
of wheels, and set in motion by a heavy weight, has also, on some
occasions, been employed in chemical processes, to keep a
solution in a state of agitation. Another object to which a
similar apparatus may be applied, is the polishing of small
specimens of minerals for optical experiments.

Next: Saving Time In Natural Operations

Previous: Increase And Diminution Of Velocity

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