Journal of the Franklin Institute; devoted to science and the mechanic arts (1826)
Franklin Institute (Philadelphia, Pa.) · Oxford, Eng. [etc.] Pergamon Press [etc.] · leaf 306
contrived by me about seven years ago, and proves to be of very greatutility. There is no other mode with which 1 am acquainted, of mak-ing a perfectly air-tight communication, between cavities previouslyseparate, at all comparable to this in facility. 295 Apparatus contrived by Dr. Hare for… … represented in this figure. Both of the bells have perforated necks.The inverted bell is furnished with a brass cap having a stuffing box 296 Hare on the Efficacy of Electric Machines. attached to it, through which the tube D, of copper, slides air-tight.About the lower end of this tube, the neck…
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![An illustration from Essai de physique, par Mr. Pierre van Musschenbroek ... avec une description de nouvelles sortes de machines pneumatiques, et un recueil d'expériences par Mr. J. v[an] M[usschenbroek] Traduit du hollandois par Mr. Pierre Massuet .. (1751)](https://img.insideoutlibrary.com/img/200/ia-essaidephysiquep01muss-431-72.webp)
