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Updated: June 24, 2025
Q. The air pump, when double acting, has of course inlet and outlet valves at each end? The usual configuration of those valves is that represented in figs. 42, 43, and 44; figs. 42 and 43 being a section and ground plan of the species of valve used by Messrs. Penn, and fig. 44 being a section of that used by Messrs. Maudslay.
Bryan Donkin was also associated with Maudslay and Barton on the subject of the national standard of the yard measure. But perhaps Mr. Chantrey was the most attractive visitor at the private workshop.
But the result was so satisfactory, both as regards the accuracy and rapidity of execution in comparison with the usual process of hand filing, that Mr. Maudslay was greatly pleased with the arrangement as well as with my zeal in contriving and executing this clever little tool. An enlarged edition of this collar-nut cutting machine was soon after introduced into the factory.
I have the old apparatus by me yet, and I shall have another dinner out of it ere I am a year older, out of regard to days that were full of the real romance of life. "On the death of Henry Maudslay in 1831, I passed over to the service of his worthy partner, Mr.
To produce them by the use of the file in the ordinary mode would not only have been difficult and tedious, but in some cases practically impossible. To get rid of the difficulty I suggested to Mr. Maudslay a contrivance of my own by means of which the most rigid exactness in size as well as form could be given to these hexagonal nuts. He readily granted his permission.
The shaft must of course be forged with square projections on it, so as to be suitable for the application of centres with square eyes. Messrs. Maudslay & Co. bore out their paddle centres, and turn a seat for them on the shaft, afterward fixing them on the shaft with a single key. This plan is objectionable for the two reasons, that it is insecure when new, and when old is irremovable.
Some interest is awakened in engineering circles in London, just now, by the approaching close of the old engineering works so well known as the "Canal Ironworks," at the entrance to the Isle of Dogs, London, E. This notable establishment stands second in priority in London that of Messrs. Maudslay, Sons & Field being the oldest for the manufacture of marine engines.
The man who attended it was engaged in cleaning out the ashes from under the boiler furnace, in order to wheel them away to their place outside. On the spur of the moment I said to Mr. Maudslay, "If you would only permit me to do such a job as that in your service, I should consider myself most fortunate!" I shall never forget the keen but kindly look that he gave me.
Indeed none but those who lived in the comparatively early days of machine-manufacture can form an adequate idea of the annoyance occasioned by the want of system in this branch of detail, or duly appreciate the services rendered by Maudslay to mechanical engineering by the practical measures which he was among the first to introduce for its remedy.
Wyon of the Mint, the apparatus was at length made perfect and performed its duty to the satisfaction of every one concerned. Mr. Maudslay had next a pair of 200 horse-power marine engines put in hand. His sons and partners were rather opposed to so expensive a piece of work being undertaken without an order.
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