File:A reference handbook of the medical sciences, embracing the entire range of scientific and practical medicine and allied science (1913) (14780691554).jpg

English:
Hospital Polygraph (used for medical purposes). 1: a metal wheel for smoking paper, 2: a convenient form of basin for varnishing tracings, and, 3: connected with this by tubing a receptacle for holding the varnish when not in use, 4: adjustable apparatus for making and breaking the electric current in connection with a time recorder

Identifier: referencehandboo02buck (find matches)
Title: A reference handbook of the medical sciences, embracing the entire range of scientific and practical medicine and allied science
Year: 1913 (1910s)
Authors: Buck, Albert H. (Albert Henry), 1842-1922 Stedman, Thomas Lathrop, 1853-1938
Subjects: Dictionaries, Medical
Publisher: New York : W. Wood and Company
Contributing Library: University of California Libraries
Digitizing Sponsor: Internet Archive

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hile notessential for the ordinary pohgraph work, are help-ful and often materially facilitate the taking ofrecords. Among those wliich have been found usefulare the following: ar?n rest which may be attachedto the patients forearm, with a handle which is 649 Cardiography REFERENCE HANDBOOK OF THE MEDICAL SCIENCES received in the palm of the hand; suitable adjustmentspermit of the desired degree of extension of the wristso that the radial artery is more readily broughtand held in contact with the receiving apparatus ofthe various instruments attached to the wrist. InFig. 122.5 are shown (1) a metal u-heel for smokingpaper; (2) a convenient form of basin for varnishing (6) pneumograph to facilitate the recording of respira-tory phenomena. The Micrograph.—This instrument, devised byAlbert C. Crehore, Ph.D.. contains a thin metal dia-phragm similar to that of a telephone, on one side ofwhich there is an air chamber connected by a tubeto a tambour receiver located on any desired portion
Text Appearing After Image:
FlQ. 1225.—Hospital Polygraph. tracings, and (3) connected with this by tubing areceptacle for holding the varnish when not in use; (4)adjustable apparatus for making and breaking the elec-tric current in connection with a time recorder. InFig. 1226 are shown (1) various forms of cups and re-ceiving apparatus, (2) receiver for brachial artery, (3)for apex, (4) for radial, (5) Jacquets chronograph and 650 of the body. The diaphragm is free to respond to allvibrations transmitted to it through the medium ofthe confined air column. The movements of thediaphragm are made visible by employing the phenom-ena of the interference of light. To the surface ofthe diaphragm D (Fig. 1227) is attached a plane mirrorE polished on its upper surface to make a metal REFERENCE HANDBOOK OF THE MEDICAL SCIENCES Cardiography Ireflector. Just abovo this is placed a nlano-convexjlens L, with the phiiio surface parallel to but nottouching the surface of the mirror. A mercury vaporlamp is i)laced above the i

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