Specification of Thomas Adams : trusses.

  • Adams, Thomas
Date:
1857
Catalogue details

Licence: Public Domain Mark

Credit: Specification of Thomas Adams : trusses. Source: Wellcome Collection.

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    Tyndall. Extra. Adams Improvements in Trusses, <$fc. of the Drawing, that as my aforesaid additional spring isjiearly straight when in its natural state or not acted upon, its tendency will be to relieve or diminish the force or pressure of the main spring in any part to which it may be applied, and it will most effectually and powerfully do so when it is drawn over that part of the main spring that is the most sharply bent or curved. 5 consequently main springs of more than usual power may be employed; and upon this principle of adjustment by a nearly straight additional spring I rest the novelty of my Invention, because I am aware that additional back springs have been before applied to increase the pressure of the main spring, though without the graduation and nicety of adjustment which I have introduced and 10 claim as part of my Invention, even if used with such strengthening springs. And I do hereby declare it to be the additional spring herein-before described by me, and the manner of applying the same to the common spring of such truss or trusses as thereby to diminish the power of the spring of the truss at pleasure, and likewise the introduction of the graduated scale by which the 15 increase or decrease of pressure is rendered evident, and which two points alone constitute my Invention and improvements. In witness whereof, I, the said Thomas Adams, have hereunto set my hand and seal, the Twenty-fourth day of October, in the year of our Lord One thousand eight hundred and twenty-eight. 20 THOMAS (l.s.) ADAMS. Signed and sealed, by the within-named Thomas Adams, in the presence of Thos Tyndall. AND BE IT REMEMBERED, that on the Twenty-fourth day of October, 25 in the year of our Lord 1828, the aforesaid Thomas Adams came before our said Lord the King in His Chancery, andjacknowledged the Specification aforesaid, and all and every thing therein contained and specified, in form above written. And also the Specification aforesaid was stamped according to the tenor of the Statute made for that purpose. 30 Inrolled the Twenty-ninth day of October, in the year of our Lord One thousand eight hundred and twenty-eight. LONDON: Printed by George Edward Eyre and William Spottiswoode, Printers to the Queen's most Excellent Majesty. 1857.
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