 | Perry Fairfax Nursey - Industrial arts - 1841 - 538 pages
...evils, and must ultimately lead to a change of system. Take for example the refitting shop of a Railway or Steam Packet Company. Here the variety of apparatus...which would be foreign to the present purpose, it may be interesting to notice the general outline and bearings of the subject. The use of the screw bolt... | |
 | 1842 - 934 pages
...machinery, the advantage of uniformity would be paramount to every other consideration. will not be a matter of surprise, when it is considered that any...unimportant, absolute identity of thread being indispensable. Messrs. Whitworth & Co. were led some years ago to alter the threads of their screwing tackle on this... | |
 | Meteorology - 1842 - 886 pages
...considered that any standard must be to a great extent arbitrary. It is impossible to deduce a precise ru le from mechanical principles, or from any number of...unimportant, absolute identity of thread being indispensable. Messrs. Whitworth & Co. were led some years ago to alter the threads of their screwing tackle on this... | |
 | Thomas P. Pemberton - Technical education - 1882 - 144 pages
...be, to a great extent, arbitrary. It is impossible to deduce a precise rule for the threads of screws from mechanical principles, or from any number of...would be unimportant, absolute identity of thread for a given diameter being indispensable. To how great an extent the choice of thread is arbitrary... | |
 | Britannia company - Screws - 1892 - 330 pages
...that any combined effort has been hitherto made to attain this object. As yet there is no recognised standard. This will not be matter of surprise, when...which would be foreign to the present purpose, it may be interesting to notice the general outline and bearings of the subject. The use of the screw-bolt... | |
 | Joseph Wickham Roe - Industrial arts - 1916 - 418 pages
...1178, quotes Whitworth as follows: It is impossible to deduce a precise rule for the threads of screws from mechanical principles or from any number of experiments....would be unimportant, absolute identity of thread for a given diameter being indispensable. There are three essential characters belonging to the screw... | |
 | Joseph Wickham Roe - Industrial arts - 1916 - 422 pages
...1178, quotes Whitworth as follows: It is impossible to deduce a precise rule for the threads of screws from mechanical principles or from any number of experiments. On the other band. the nature of the case is such that mere approximation would be unimportant, absolute identity... | |
 | Joseph Whitworth - Engineering - 1882 - 154 pages
...that any combined effort has been hitherto made to attain this object. As yet there is no recognised standard. This will not be matter of surprise, when...which would be foreign to the present purpose, it may be interesting to notice the general outline and bearings of the subject. The use of the screw bolt... | |
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... consideration. It does not appear that any combined effort has been hitherto made to attain this object As yet there is no recognized standard. This will not be matter of surprise, when it is considered that any standard must be to a great extent... 