Description of the construction, properties, and varieties of the hydro-pneumatic lock — W. Congrave

Полный вариант заголовка: «Description of the construction, properties, and varieties of the hydro-pneumatic lock : shewing the principles of its action, with introductory observations on locks in general, and a supplement containing the demonstration of the spontaneous adjustments of which it is capable, so that its operations may in no way be affected by any possible variations in the canal levels / invented by colonel Congrave».