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The principal difficulty experienced in constructing the hydraulic press before the time of Bramah arose from the tremendous pressure exercised by the pump, which forced the water through between the solid piston and the side of the cylinder in which it worked in such quantities as to render the press useless for practical purposes.
Meadows acquiesced with feigned reluctance. It had many conveniences; among the rest a very long though narrow garden inclosed within high walls. At the end of the garden was a door which anybody could open from the inside, but from the outside only by a Bramah key.
The congregation of hat-boxes, and Bramah desks, and dressing-cases was prodigious. Their carriages, emblazoned with coronets and heaped with shining imperials, were on the foredeck, locked in with a dozen more such vehicles: it was difficult to pass in and out amongst them; and the poor inmates of the fore-cabin had scarcely any space for locomotion.
This kind of lock was revived, or at least greatly improved, by a Mr. Barron in 1774, and it was shortly after this time that Bramah directed his attention to the subject.
Hooke. A Letter to the Right Hon. Sir James Eyre, Lord Chief Justice of the Common Pleas, on the subject of the cause Boulton and Watt v. Hornblower and Maberly, for Infringement on Mr. Watt's Patent for an Improvement of the Steam Engine. By Joseph Bramah, Engineer. London, 1797.
I'll send the pocket-knife hand down-stairs, and you fasten the Bramah locks on both doors, and keep the keys yourself. See to that now at once: then your mind will be easy. And I shall be in the works all day now, and every day: come to me directly, if there is any thing fresh."
Bramah was deservedly honoured and admired as the first mechanical genius of his time, and as the founder of the art of tool-making in its highest branches.
Clement acted on the advice, and took with him some of his drawings, at sight of which Bramah immediately engaged him for a month; and at the end of that time he had given so much satisfaction, that it was agreed he should continue for three months longer at two guineas a week.
'It went the half hour as I came through the Polygon. I'm here before him, though, so I don't mind. Comforting himself with this reflection, Mr. Lowten extracted the plug from the door-key; having opened the door, replugged and repocketed his Bramah, and picked up the letters which the postman had dropped through the box, he ushered Mr. Pickwick into the office.
Bramah rejoined by threatening to publish his assailant's letters, but Huntington anticipated him in A Feeble Dispute with a Wise and Learned Man, 8vo. London, 1793, in which, whether justly or not, Huntington makes Bramah appear to murder the king's English in the most barbarous manner.
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