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Manufacturing

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

Exerting Forces Too Great For Human Power And Executing Operations Too Delicate For Human Touch
56. It requires some skill and a considerable apparatus to e...

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

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

Increase And Diminution Of Velocity
32. The fatigue produced on the muscles of the human frame d...

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...

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

Registering Operations
65. One great advantage which we may derive from machinery is...

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

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

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

Of Copying With Altered Dimensions
147. Of the pentagraph. This mode of copying is chiefly used ...

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

Accumulating Power
20. Whenever the work to be done requires more force for its ...

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

On The Future Prospects Of Manufactures As Connected With Science
453. In reviewing the various processes offered as illustrat...

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

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

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

On Combinations Amongst Masters Or Workmen Against Each Other
353. There exist amongst the workmen of almost all classes, ...



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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