A handful of good wire electric discharge machining images I located:
Image from page 222 of “Electricity : its healthcare and surgical applications, like radiotherapy and phototherapy” (1911)
Image by Internet Archive Book Images
Title: Electrical energy : its medical and surgical applications, such as radiotherapy and phototherapy
Year: 1911 (1910s)
Authors: Potts, Charles S. (Charles Sower), 1864- Richards, Horace Clark Pancoast, Henry Khunrath, 1875-1939
Subjects: Electrotherapeutics Radiotherapy Phototherapy Electric Stimulation Therapy Radiotherapy Phototherapy
Publisher: Philadelphia New York : Lea & Febiger
Contributing Library: Francis A. Countway Library of Medicine
Digitizing Sponsor: Open Knowledge Commons and Harvard Medical College
Click right here to view book online to see this illustration in context in a browseable on the web version of this book.
Text Appearing Prior to Image:
ct. This provides theDArsonval present of low prospective. Such an appliance is shown inFig. 161. According to Piffard/ with such connections a fourteen-platemachine revolving with a speed of 400 revolutions per minute will give acurrent by way of the patient of 150 milliamperes. In utilizing this the dis-charging rods should be in speak to when the machine is began and thengradually separated until a spark gap of sufficient length to produce thedesired effect is obtained. This is usaally one particular of three to 4 inches. Thegreater the spark gap, the higher the impact. This existing so obtained maybe administered by either metallic electrodes, glass vacuum electrodes(Figs. 192 and 197), autoconduction or autocondensation (pp. 262 and263), according to the benefits preferred. An apparatus for getting a cur-rent of considerably higher possible than the DArson val with a static machinehas also been devised by Piffard, and is recognized as the HyperstaticTransformer (Fig. 162). This consists of a fine wire coil concentric
Text Appearing After Image:
The Piffard hyperstatic transformer. with the solenoid and the current obtained, identified as the Hyperstatic,resembles somewhat the Tesla present, but the possible is not so higher(p. 103). It has been discovered of particular value in the therapy of skindiseases. Yet another implies of getting a current of higher potentialthan the DArsonval is the use of the resonator (p. 101), which maybe used in connection with a static machine. The machine must berun with the discharging rods widely separated and each and every connectedwith the inner coatings of the condenser or Leyden jar. Differenttypes of resonators are shown in Figs. 78 and 163. Owing to thegreat noise created at the spark gap, a muffler is a comfort 1 isshown in Fig. 164. > New Yoik and Philadelphia Healthcare Journal, June 16, lOOG, 1219. Higher FREQUENCY CURRENTS 215 A superior approach to the static machine for all purposes, exceptwhen constitutional effects are desired, is the use of the Rhumkorffcoil (p. 94). As it is not affected by the
Note About Images
Please note that these photos are extracted from scanned page pictures that might have been digitally enhanced for readability – coloration and look of these illustrations could not completely resemble the original function.
Image from page 380 of “The medical and surgical utilizes of electricity : like the X-ray, Finsen light, vibratory therapeutics, and higher-frequency currents” (1903)
Image by World wide web Archive Book Images
Title: The healthcare and surgical makes use of of electrical energy : like the X-ray, Finsen light, vibratory therapeutics, and higher-frequency currents
Year: 1903 (1900s)
Authors: Rockwell, A. D. (Alphonso David), 1840-1925
Subjects: Electrical energy in medicine Radiotherapy Electric Stimulation Therapy Radiotherapy
Publisher: New York : E. B. Treat & company
Contributing Library: Francis A. Countway Library of Medicine
Digitizing Sponsor: Open Understanding Commons and Harvard Health-related School
Click right here to view book on-line to see this illustration in context in a browseable on the web version of this book.
Text Appearing Ahead of Image:
the connective discharge is amplified by professionals in avariety of methods. In certain types of headache and nervous irritabilitysedation is admirably effected by the use of two electrodes, one particular directinga breeze to the cervical spine and a single to the forehead. This doubling of Strategies OF ADMINISTRATION. 361 the breeze application is nonetheless further amplified by entirely encirclinga zone of the individuals body with a static cage of coarse wire netting,within which metallic points or tinsel brushes act as a multiform breezeelectrode and create the effect of an electric shower-bath. Oscillationsmay be created by interrupting the existing, and the strength is increasedby standing the patient on a foot-plate. Operative method plays animportant element in the comfort of this application. Approaches of Administration.—In the administration of static electricitythe very first step is accomplished by insulating the patient upon the woodenplatform supported on glass legs and connected by a metal chain or rod
Text Appearing Following Image:
Fig. 120.—Drawing a Spark from the Spine. to a single of the prime conductors of the machine, and connecting the oppo-site pole to the ground. A general electrification of the patient ensuesupon starting the machine into action. This so-named static charge isnot only the foundation step to the subsequent application of two othermethods for which electro-therapeutic sources contain no substitute orequivalent process, viz., the breeze and spark, but it constitutes in it-self a very successful and helpful technique of remedy. Fig. 120 illustratesa patient seated upon the insulating stool—in a situation of insulation—while the operator is in the act of drawing a spark from the spine. Thehigh potential (constructive) pole is normally chosen for common electrification. 362 ELECTRO-THERAPEUTICS. The low prospective (adverse) pole is theoretically indicated as a seda-tive in states of hyper-excitability whilst the typical electric state inhealth being optimistic, we attempt to restore this stat
Note About Pictures
Please note that these photos are extracted from scanned web page pictures that might have been digitally enhanced for readability – coloration and look of these illustrations might not perfectly resemble the original work.