US1350042A

US1350042A - Apparatus for the examination of x-ray and other negatives

Info

Publication number: US1350042A
Application number: US254606A
Authority: US
Inventors: Elza R Stealy
Original assignee: Individual
Current assignee: Individual
Priority date: 1918-09-18
Filing date: 1918-09-18
Publication date: 1920-08-17
Anticipated expiration: 1937-08-17

Description

E. R. STEALY. APPARATUS FOR THE EXAMINATION 0F X-RAY AND OTHER NEGATIVES.

APPLICATION FILED SEPT. I3, I9I8- Patented Aug. 17, 1920.

3 SHEETSSHEET I.

awvewwoz I M Clbtovn 'atg- E. R. STEALY.

APPARATUS FOR THE EXAMINATION 0F X-RAY AND OTHER NEGATIVES.

Patented Aug. 17, 1920.

3 SHEETSSHEET 2.

APPLICATION FILED SEPT. 18 1918.

.1 ulr/llllqlll/lv uli I 31 mm n for E. R. STEALY. APPARATUS FOR THE EXAMINATION 0F X-RAY AND OTHER NEGATIVES.

APPLICATION FILEDSEPT. 18, I9I8.

Patented Aug. 17, 1920.

3 SHEETS-SHEET 3.

. make a ELZA 1B STEALY, 01' SHENANDOAH, IOWA.

APPARATUS FOR THE EXAMINATION F x-BAY AND OTHER NEGATIVES.

Specification of Letters Iatent. Patented Aug. 17, 1920- Application filed September 18, 1918. Serial ii'o. 254,606.

To allevliom it may concern Be it known that I, ELZA R. STEALY, a citizen of the United States, residing at Shenandoah, in the county of Page and State of Iowa, have invented certain new and useful Improvements in Apparatus for the Examination of X Ray and other Negatives, of which the following is a specification.

This invention has as its object the provi- 'sion of a novel apparatus for use in the examination of X-ray and other negatives.

Heretofore it has been customary after the production of an X-ray negative, to rint thereof and then examine the print. owever, more or less of the details of the negative are lost in the printing process so that this method is usually unsatisfactory. To overcome this disadvantage it has by some been the practice to examine the negative direct either with natural or artificial light, but even by this method it has been impractical to observe all of the minute details of the negative. There is also the stereoscopic method of studying negatives'although this method is not always practical as two negatives are required. he present invention, therefore, has as its primary object to provide an apparatus by the use of which every detail in a negative of this or i any other type may be observed and studied with the result that a more complete diagnosis is possible than by the previously referred to methods of examination.

A' further object of the invention is to provide an apparatus by the use of which separate portions of a negative may be examined for details and any desired portion may be brought out in the greatest detail for examination.

The invention also has as its object the provision in an apparatus. for the purpose stated of means whereby the negative as a whole or any portion thereof may be illuminated with any desired intensity of light without the employment of ,rheostats or other dimming devices, and the whole or any portion of the negative may be viewed on amore or less enlarged scale. If, during the examination of sucha negative, the same is illuminated with-the same intensity of light, there is much detail lost as some of the shadows will be washed out if the light is too intense or the denser shadows will not be brought out in great detail if the light is subdued, and it is for this reason that the ppll'ltll: is adjustable so as to when the negative permit of illumination of the negative as' a wholeor any portion thereof to any desired intensity, and the examination of the entire negative or any portion thereof on its normal scale or on any suitable scale of enlargement. By the enlargement of the negative,

a stereoscopic effect 1s produced to some ex tent which is better seen by comparison between the normal scale and the magnified or enlarged scale.

The invention furtherhas as its objectthe provision in apparatus for the purpose stated, of a novel negative holder embodying means for diflusing the light rays so that as a whole is being examined all portions'thereof will be illuminated with the. same degree of intensity.

In the accompanying drawings:

Figure l is a pers ective view of one type of apparatus embo ying the present invention;

Fig. 2 is a vertical front to rear section therethrough Fig. 3 is a sideelevation illustrating another type oi apparatus;

Fig. 4 is a perspective view illustrating the parts of the holder for a single negative disassembled;

Fig. 5 is a view lookin at the upper edge of the holder shown in I ig. 4;

Fig. 6 is a perspective view of a holder for two negatives;

Fig. 7 is a view similar to Fig. 5 illustrating the holder shown in Fig. 6.

gBriefiy stated, the apparatus embodying the invention includes a source of light supply, a mirror preferably of the plano-con-.

cave type, a negative support arranged between the source of light and the mirror,-

and a light screen arranged between the negative support andthe mirror, the "source of light and the mirror being adjustable for purposes which will be presently pointed out. While the apparatus illustrated in the drawings and to be hereinafter de-.'

details and combinations shown and described therein, but reserve the right to include in m which embo y the spirit thereof.

invention all modifications I ments. 1

and which is slidably fitted in one end of the groove 2, this block being provided in its under side with a groove 4 and having fitted therein spaced studs 5 located near its ends and projecting into the said groove 4 and lying at opposite sides of a similar stud 6 secured in the base 1 and projecting upwardly into the groove 2, the studs 5 and 6 constituting means for limiting the sliding adjustment of the block 3 with relation to 'the base 1. The block 3 is provided at its outer end with a finger piece 7 by means of which it may be adjusted longitudinally with relation to the base A tubular standard 8 is provided at its lower end with an attaching base 9 which is secured in any suitable manner to the-upper side of the,

block 3, and telescopically fitted within this standard is a. second tubular standard 10 whichmay be raised and lowered and which is designed to be held in its positions of ad ustment by means of a set screw 11 threaded through the standard 8 and bearmg against the said standard 10. An arm 12 is pivoted as at 13 to the upper end of the standard 10 and may be swung vertically as w1ll be evident by reference to Fig. 2 of the drawings. supports a reflector 14 having an electric lamp socket 15 into which is fitted the base of a lamp 16, current being supplied to the lamp by conductor wires 17 led through the arm 12, through the standard 10, and through one side of the standard 8. At this point it may be stated that not onl may the standard 10 be adjusted vertically within the standard 8 by loosening the set screw 11,

but may also be rotated within the standard 8 so as to angularlv adjust the light in a horizontal plane. hus'a universally adustable su port is provided for the source of llght. t'will be'understood, of course, that the source of light may be supported for universal adjustment by means of anyof the ordinary ball A 'base blbck 18 corresponding to the block 3 is slidably ,fitted into the other end of the groove 2 and is provided in its under sidewith a groove 19 into which project studs 20 correspondmg to the studs 5 and lying at opposite sides of. a stud 21 se- This arm at its outer end and socket arrangecured in the base 1 and projecting upwardly into the groove 2, the studs 20 and 21 serving the same purpose as the studs 5 and 6,

respectively. Also the block 18 is provided at its outer end with a finger piece 22 whereby it may he slid in the groove 2. Fixed to the upper side of the block 18 is a .tubular standard 23, and telescopically fitted into this standard is a post 24 which may be adjusted vertically in the standard 23, and also rotatably as in the-instance of the standard 10, the post being held' at adjustment by means of a set screw 25 corre sponding to the set screw 11. At its upper end the post 24 supports a yoke 26 between the arms of which there is mounted a mirror indicated in general by the numeral 27. This mirror is of circular form and of the plano-concave type. That is to say, the mirror embodies a concave glass 28 at one side and a plane glass 29 at its opposite side, the glasses being, of course, arranged back to back, as shown in Fig. 2 of the drawings. The arms of the yoke 26 support-the mirror at diametrically opposite points and, therefore, the mirror may be tilted as will be clear by reference to Fig. 2 of the drawings or it may be completely reversed so that either its concave side 28 or its plane side 29 may be presented toward the source of light. For a purpose which willbe presently explained, it is preferable, although not absolutely necessary, that a hood be provided for the mirror, and this hood is indicated in general by the numeral 30 and comprises a cylindrical. relatively shallow body formed at diametrically opposite 'points in one end with bayonet slots 31 whereby the mirror may be engaged with the inturned mirror supporting ends of the arms of the yoke 26 as shown in Fig. 1 of the drawings,'the hood being in this manner separately connected with the mirror and yoke and being therefore adapted for disposal at either side of the mirror. Where a large negative is to be examined in its entirety, it is desirable to employ a reducing mirror 28, as shown in dotted 'lines'in Fig. 2 of the drawings, as a substitute for the mirror 28.

The film or negative holder comprises a plate 32 preferably of opaque material and seated at its lower end or edge" in a transverse slot 33 formedin the base 1, the plate I being located between the source of light and ,the mirror. The said plate is formed with an opening 34 preferably of rectangular form and of dimensions approximating those of the ne ative to be'examined. In conjunction wit the plate 32 there is provideda ocket to receive the negative to be examin and .this pocket, in that form shown in Fig. 4 of the drawings, is designed to contain a single negative and is formed from a suitableblank of transparent or translucent material such for example as celluloid. The pocket-comprises a front 35, the lateral edge portions of which are folded inwardly? s at 36 and thence outwardly as at 37, the pflrtions 37 constituting attaching flanges which are secured to the plate 32 at opposite sides of the opening 34 by stitching or by the employment of stapls or other fastening means as indicated by the numeral 38. The inwardly folded marginal portions 36 of the front are provided in conjunction with the said front pockets to receive the lateral edge portions of the negative which is indicated by the numeral 39. As these pockets are unobstructed throughout their entire lengths, the margins of the negative to be held may slide freely in the pockets in introducing and removing the negative and as a consequence there is no likelihood of injury to the negative, nor will any difliculty or annoyance be experienced in inserting or removing the same. In order to limit the downwardmovement of the negative so as to support the same directly opposite the opening 34, the lower marginal portion of the front 35 is folded rearwardly and thence upwardly behind the flanges 37 as indicated by the numeral 40 so as to provide a bottom for the negative pocket as a whole.

That form of holder shown in Figs. 6 and 7 of the drawings is constructed on the same I general plan as the holders shown in Figs.

4 and 5, except that it is designed for the support of two negatives and consequently intermediate channels or pocketsreceiving,-

of course, the adjacent lateral edges of the two negatives to beheld.

The screen heretofore referred to is indicated by the numeral 40 and comprises a plate of opaque material seated at its lower end or edge in a transverse slot formed in the base 41 .and provided with an opening 42 located opposite the opening 34 in the.

plate 32. This screen 40 is located between the negative holder 32 and the mirror 27.

In the use of this form of the apparatus,

the. parts being in the positions shown in Figs. 1 and 2 of the drawings, the concave or the plane side of the mirror is presented toward the source of light and the. negative and the light rays will then pass from the source of light through the negative, the

front 35 of the negative pocket, and the opening 42 in the screen 40 to the face of the mirror. If the concave face is presented in the direction stated, the image will, of

course, be presented on an enlarged scale,

but if the plane face of the mirror is presentedin the direction stated, the ne ative will be reflected in its normal scale. f the mirror 28 is employed, the image will be reduced. The hood 30, of course, excludes extraneous light rays from the face of, the mirror and thereby heightens the distinctness with which the .image of the negative is reflected in the mirror. Of course, by adjusting the light toward the negative the negative will be illuminated with increasing intensity and the illumination may be subdued by adjusting the light in a direction away from the negative. Also the degree of enlargement may be varied by adjusting the' mirror toward or from the negative. Furthermore, by angularly adjusting the light and likewise varying the angular position of the mirror, any desired portion of the indicated in Fig. 5 by the numeral 45. The

light screen is indicated by the numeral 46, and the said negative holder and light screen are positioned between the source of light 43 and an arm 47 corresponding to the arm 44 and supporting a mirror 48 which mirror may be also adjusted due to the nature of the supporting arm '47 therefor.

While the screen 40 is above described as formed with an opening 42 and this arrangement' is preferable where the screen and negative holder are arranged in the manner shown in Figs. 1 and 2 of the drawings, nevertheless if the screen and negative holder are transposed it will be advisable to cover the opening 42 with a pane of transjulcent material such as ground glass or the It is preferable that the front 35 of the negative holder be, as stated, of translucent material so that the light rays will be diffused. Of course, if desired this pocket may be of transparent material and: a sheet of translucent material may be introduced into the pocket with the negative.

If found desirable, instead of so mounting the source of light that the same may be ad justed toward and from the negative holder,

' negatives, means for supporting a negative,

a source of light at one side of the means, and a uniformly magnifying mirror horizontally pivoted at the other side of the said means.

3. In apparatus for the examination of negatives, means for supporting a negative,

a source of light at one side of the means" adjustable with relation thereto, and 'a mirror at the other side of the said means also adjustablewith relation thereto.

4. In apparatus for the examination of negatives, means for supporting a negative,

a source of light mounted for universal adjustment at one side of the means, a uniformly magnifying mirror at the other side of the means mounted for universal adjustment, and a light screen between the negative support and the mirror.

5. In apparatus'for the examination of negatives, means for supporting a negative,

a source of light at one side of the said means adjustable angularly with relation thereto for illuminating portions of the negative in detail, and a uniformly magnifying mirror at the other side of the said means, f

6. In apparatus for the examination of negatives, means for supporting a negative,

a source of light mounted for universal movement at one side of the means adjustable toward and from the means, and a mirror at the other side of t said means.

7 In apparatus for the examination of negatives, means for supporting a negative, a source oflight at one side of the means,

and a uniformly magnifying mirror at the; other side of the means adjustable vertically.

and angularly with relation thereto.

8. In apparatus for the e amination of negatives, means forsupporting a negative, a source of light at one side of the means, and a uniformly magnifying mirror at the other side of the said means angularlyad, justable with relation thereto. i

9. In apparatus for the examination of negatives, means for supporting a negative,

a source of light at one side-of'the means adjustable toward and from they means and angularly with relation thereto, and six-magnifying mirror at the other side of the said meansadjustable toward and from t-h e same. a

'10. In apparatus for the examination of.

negatives, means for supporting a negative, 3. source of light at one side of the means adjustable toward and from the means and antgularly with relation thereto, and a magni ying mirror at the other side of the said means adjustable toward and from the same and angularly with relation'thereto.

11. In apparatus for the examination of negatives, a negative support, a source of light at one side of the support adjustable toward and from the said support, adjustable vertically, and adjustable angularly with relation to the support, and a uniformly magnifying mirror at the other side of the said support and being horizontally pivoted.

12. In apparatus for a source of light. at one side of the means,

the examination of negatlves, means for supportlng a negative,

and a mirrorat the other side of the means having a concave face and an opposite plane .face, the said mirror being reversible.

.13. In apparatus for the examination of negatives, means for supporting a negative,

a source of light at one side of the means,

and a mirror at the other side of the means having a magnifying face and an opposite plane face, the said mirror being reversible and angula-rly adjustable. Y

.14. In apparatus for the examination of negatives, means for supporting a negative,

a source of light at one side of the'means, V

a uniformly magnifying mirror at the other side of the means, a light screen between the negative support and the mirror, and a light diffusing sheet between said. support and said mirror. Y

15. In apparatus for'the examination of negatives, a negative support, a source'of light at one side of the support, a mirror at theother side of the support, a li ht'screen between the negative support an the minror, the light screen being of opaque material andhaving an opening iIrline with the negative for the passage of light rays from the negative, and a light difi'using sheet be-.

tween said support and said mirror.

16. In apparatus for the examination of negatives, a 'ne tive support, a source of light at one si e of the support mounted for universal adjustment, and a mirror at the 0th side of the said support also mounted for universal adjustment.

17. Inapparatus .for the examination of negatives, means for supporting a negative, a source of light at one side of the means and a mirror at the other side of the means 1 having .on one side a mirror face of one character and on the other side a mirror face of another charactenthe said mirrorbeing reversible. j

18, In apparatus for the examination of De at ves, a'in'egative support, a source of -lig t at one side of the support, a mirror at the other side of the said support having a concave face and aiplane face, and a hood separably, connected with the mirror and adaptable to either face" thereof.

19. In' apparatus for the examination of in sai d front being folded rearwardly and u negatives, a negative support including a plate having an opening, a light difiusmg sheet covering theo means upon the said sheet for the support of a negative within the saido g:

20. In apparatus for the examination of I negatives, means for supporting a negative,

a source of hght at one side of the means and adjustable with relation thereto, a mirror at the other side'of the said means and adjustable with relation thereto, and a light screen between the negative support and the mirror.

21. In apparatus for the examination of negatives, a negative holder includin a v plate having an opening, and a .hofder proper including a, out aving it's 'marginal portions provided with pockets to re ceive the side margins of the negative to be held, thei'said holder proper being secured to the said plate opposite the opening.

22 Inapp'aratus for the examination of negatives, a negativesupport including a negatives, 40

platehavin an o and a' ne tive holder propir incliiding -a front of' l ight transmitting material having its lateral portionsffo ded inwardl'y to provide pock ets toreceive the' sideinar of the ne tiveto be held,fan"d' thence olded outwardly rovide flangessecured to theface of the late 'atthe' opposite sides of the openm 23. In apparatus for theflexamination of a' negative support including a having anopening late and anegative material vmg its lateral older proper inclu a front of ht portions folded inwardly to provide pockets to reeeivethe side mar sof the ne tive to be held, and thence olded outw y to provide flanges secured to the face of the sai plate at the opposite sides of the opent erein, the lower edge portion of the wardly to provide a bottom for the said 24. In a paratus for the examination of negatives, a negative support includin a plate having an opening, a light difiusm r the mirror may be individually presented to the negative carried by said support, and a hood adapted to be interchangeably arranged about either face of the mirror. I In apparatus forthe examination of negatives, means for supporting a negative, a source of light at one sidevof the means and adjustable with relation thereto, a mirror at the other side of the means and adjustable with relation thereto, and, an opaque member between said means and said mirror and havingan o in line said sup rt. In testimony whereof I aflix my signature.

. ELZA R. sTEiLY. [a a] with said mirror and the negative carried by