US1431578A - X-ray system - Google Patents

Description

H. D. GARRETSON.

X-RAY SYSTEM. APPLICATION FILED FEB. 5, 1921.

1,431, Patented 00. 10,1922.

Patented @ct. llU, llHZZ.

HARRY D. GARRIETSON, OF NEW YORK, N. Y.

K-RAY SYSTEM.

'Annlication tiled February 5, 1921 To all whom it may comern Be it known that I, HARRY D. GAunFrrsoN, a citizen of the United States, and a resldent of the city, county, and State of New York, have invented a new and useful Improvement in X-Ba Systems, of which the following is a speci cation.

The object of my invent on is to provide a system of this type in whlch under no circumstances can there be any exposed wires of high potential with which a person may come in contact.

Heretofore it has been common to make the tube of an X-ray system so that it may have a convenient location and then the body of a person is adjusted with regard to the tube for the purposes of observation, examination'or other application of X-rays. The disadvantage of such a system is that the transformer and tube are moved relatively to each other so that high tension wires exist with which the patient may come in contact. My invention obviates this danger by keeping the step-up transformer and tube in fixed relation and then shifting them together into any desired position for the purposes of observation, examination or other uses of X- rays.

For a more particular description of my invention, reference is to be had to the accom panying drawings, forming a part hereof in which- Figure 1 is a plan view of a structure embodying my invention.

Figure 2 is a side elevation of the Figure 3 is a wiring diagram.

'lhroughout the various views of the drawings, similar reference characters designate similar parts.

In the embodiment of my invention herein shown, a practical application to dentistry is suggested, but it is to be understood that this invention is not limited'to dental re quirements but may be used wherever desired.

In this particular embodiment an X-ray tube 1 is mounted in a suitable casing 2 which may be of metal and an insulating material such as hard rubber, and this casing 2 is made of any suitable shape and given a tubu lar projection 8 through which X-rays may be projected and this casing 2 also containsand completely encloses a step-up transformer 4 with lead in wires 5 and three wires 6 which run from the transformer to the tube 1.

Serial No. 442,609.

The casing 2, at each end, is provided with guides 7 which are fixed thereto and provided with rollers 8 which take on the under side of curved rack bars 9 which have their upper arms fixed to a crotch 10 which is pivoted at 11 to a bracket 12 which is given any suitable support. Each' guide 7 carries a pinion 13 which is fixed to a common shaft lftand meshes with the racks on the bars 9, as indicated, and one of these pinions is fixed to a worm gear 15 which meshes with a worm 16 carried by a shaft 17 which is journaled in one of the guides 7 and this shaft may be turned by means of a hand crank 18 so that by turning the hand crank, the entire casing 2 and its contents may be placed in any desired position. I

It is apparent from the foregoing that the only wires which run -from the casing 2 are the wires 5 which are low tension wires and not of a dangerous kind.

In view of the foregoing the operation of my improved system will be readily understood. Assuming that the patient is in position and ready for the operation of the X-rays the casing 2 is adjusted by shifting the crotch 10 on the pivot 11 and by turnmg the handle 18 until the correct position for an exposure has been found; an alternating current is then turned on through the wires 5 and the transformer 4 then raises the voltage to the required amount and causes the correct kind of an X-ray current to be passed through in the tube 1. After the desired exposure has been had the apparatus may be shifted to any desired location by turning the handle 18 and if necessary by shifting the crotch 10 on the pivot 11. From this it is obvious that the casing 2 maybe so placed that any desired exposure may be had and that at no time, under any conditions, is the patient or the operator exposed to high potential wires or to the danger of contact with high potential wires of the apparatus and it is adjusted to suit the patient and the patient is not adjusted to suit the apparatus.

While I have shown and described one embodiment of my invention, it is obvious that it is not restricted thereto, but that it is broad enough to cover all structures that come within the scope of the annexed claim.

Having thus described my invention, what I claim is;

In a system of the class described, an X-ray tube, a transformer adjacent to and in mg the apparatus are free from all danger of contact with high potential parts of the 10 apparatus and it may be positioned to throw -rays on any desired part of the patient Without shifting him.

In testimony whereof, I have hereunto set my hand this 31st day of January, 1921.

HARRY D. GARRETSON.

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