Roentgenocinematography of the stomach and cap / by Lewis Gregory Cole.

  • Cole, Lewis Gregory, 1874-1954.
Date:
[1913?]
Catalogue details

Licence: In copyright

Credit: Roentgenocinematography of the stomach and cap / by Lewis Gregory Cole. Source: Wellcome Collection.

Provider: This material has been provided by The Royal College of Surgeons of England. The original may be consulted at The Royal College of Surgeons of England.

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    apparatus. It is consequently a readily available and most successful diagnostic method for the Roentgenologist. From a scientific standpoint, however, it seemed worth while to perfect a Roentgenocine- matographic apparatus, capable of making at least four Roentgenograms per second. This machine, which will be described in detail, is a perfection of the principle set forth in my original communication in 1910. The process consists in moving a film of anv desired length over the surface of an intensifying screen, which is rapidly excited by instantaneous flashes from a Roentgen tube. The film is propelled from one light- proof magazine into another by an adjust- able mechanism. The following is a detailed description of the apparatus built by Charles E. Dressier under the direction of the author. (2), or locked at any desired point by the clamp (3) to which it is attached. The film-shifting mechanism consists of a supporting frame (4), carrying a main or crankshaft (5), and an oscillating shaft (6) above it. Fastened to the further end of the main shaft is a flywheel (7), pro- vided with a slot (8) for adjusting the length of film to be exposed. Next to the flywheel (7) is an eccentric, providing an up and down motion of the oscillating shaft (6), which controls the movement of the sectors (11) bearing the teeth that engage in perforation of the film. The holes of the supporting frame for the oscillating (6) shaft are oblong, allowing the shaft to move up and down. A curved lever (9) is pivoted at one end to the slot in the flywheel (7) . Its other end is secured to a short arm (10) connected with the oscillating Fig. I. Drawing of Roentgenocinematographic Apparatus. A weight, acting as a counterpoise for the mechanism, is suspended within a Hanged pipe (big. 1) of large diameter, fastened to the floor. The mechanism may be moved up or down by rack and pinion shaft, giving it a part rotary motion. The rotary motion, combined with the up and down motion, constitutes a rocking move- ment of the sectors (11), which propel the film forward intermittently.