US1897177A - Supporting frame for rontgen ray apparatus - Google Patents

Description

Feb. 14, 1933. POI-IL 1,897,177

SUPPORTING FRAME FOR RONTGEN RAY APPARATUS Filed July 9. 1928 2 Sheets-Sheet 1 INVENTO}? q w M- fi Feb. 14, 1933. POHL 1,897,177

SUPPORTING FRAME FOR RaN TGEN RAY APPARATUS Filed July 9, 1928 2 Sheets-Shae; 2

Patented Feb. 14, 1933 ERNST IPOHL, KIEL, GERMANY SUPPORTING FRAME FOR RbNTGEN BAY APPARATUS Application filed July 9, 1928, Serial No.

The invention relates to supporting frames for Rontgen ray apparatus and has for its object to provide means for adjusting the height of the translucent screen holder relative to the carriage which carries the Rontgen ray tube, and which is slidably adjustable horizontally relative to the table or couch on which the patient is supported. According to the invention the connecting member between the aforesaid holder and the Blintgen stand is formed by a lever device carrying a counter-poise for balancing the mass of the holder and members supported thereon. In this manner it is made possible to adjust the screen or the box or both parts at the same time without much effort in the vertical direction to and from a patient.

The lever device may, according to the in vention, be a lever parallelogram consisting of two or more parallel levers, or the lever device may be formed of one or more double-armed levers, one arm of which carries the counterpoise, whilst the other arm engages on a rod movable in the direction of its axis which serves as holder for the screen and the box. The movable rod as a screen and box holder for Rontgen stands is of itself known.

The counterpoise may be adjustably arranged. It may also be replaced by a Rontgen tube with protecting casing arranged on the lever device; furthermore the Rontgen tube and a special counterpoise may cooperate together as compensating mass.

Further details of the invention will appear from the following specification and the drawings and are set forth particularly in the appended claims.

In the drawings:

Fig. 1 is a perspective view of a structure embodying the lever parallelogram. 1

Fig. 2 is a diagrammatic representation of a modification.

Fig. 3 shows a constructional example with 291,384, and in Germany July 12, 1927.

the double-armed lever which engages on the longitudinal movable rod.

Fig. 4 shows the adjustable arrangement of the counterpoise.

The supporting frame for the auxiliary apparatus (illuminating screen and box) is composed of a carriage a guided, for exampic, on the Rontgen stand, a frame 6 for taking a translucent screen 0 or a Rontgen box (not shown) as well as a connecting frame arranged between the carriage a and the frame 6.

The connecting frame consists, according to Fig. 1, of a lever parallelogram which is formed by the levers (Z, 6, f and g. In order to secure suflicient strength, all the levers are mounted in duplicate, as can be seen in the drawings from the reference letters d 6 f and 9 Equivalent lever bars are connected with one another by transverse bars h and are thus combined into a single lever whereby the strength of the whole arrangement is increased. In Fig. 1, one lever parallelogram is represented which has two parallel levers in each plane. On the other hand, Fig. 2 shows a lever parallelogram with, for example, three parallel levers in each plane that is, in addition to the levers cl, 0, f, g, the levers m and n are provided. Alternatively two levers may be mounted parallel to one another in one plane, and more than two levers in another plane. The lever parallelograms are, for example, secured after each adjustment by clamping screws 2' if this should be desired for any reason. In general, a special fixing of the lever parallelogram is not required since the system once adjusted retains its position without trouble. In addition to the clamping screws 71, it is possible also, as can be seen i from both Figs. 1 and 2, for a connecting bar, for example, a slide 70, to be mounted, which, accordingto the example shown, is guided diagonally in a rectangle of the lever system and thus connects with one another about the shaft u. Firmly connected with- [However the'ar'ran ement shown is to be v a preferred since tlie'screeuand-the box are the strength two pivots of the lever system located diagonally opposite one another. It is posthe pivot m and each carry ontheir prolonga V 'tionsun a weight .0 and 0 -;tobalance the mass of the carrier.

According to Figilii, theconnecting frame. consists of thelongitudmally movable rods which 'have 'bn their top "ends the frame,

parts bto take the screen 0 or thebox and are each guided on a frame 9. For thi'spure pose the rods 19 are provided on their lower ends with a cross-piece 17 whereby the rods p obtain. awell supported guidance on the frame g so that they cannot rotate about their axes. At. the guiding points of the rods ;0 are arranged slide rollersx's or ball bearings which provide an easyaxial movement of the rods. t an intermediate point on each rod p are pivoted"'onthe frame g levers t which are connected firmly with one another by a shaft u. A pin andslot connection L, is provided between'lever t and rod 39. -A lever o, on which'the counterpoise oismounted, is freely pivoted to the levers t one of the leverst is a segmentw with slot guide for a set screw, which is. adapted tobe screwed in th-e'lever 0, which makes it posslble to set the.lever.t in a definite position in relation to the lever 41, so that the length ofthe lever t may befaltered and thus the height of theplate holder may be ad justed. Owing to the fact that thenioments of the Weight of the plate holder ,and the weight ofthe counterp'oise about the pivot are always equal, the lever will always come tore's't in the position of balance making a definite angle withythehorizontal. '50

- rest ata certain height which naylbe de- Thus the plate holder will always come to termined by adjusting the levertlwith ref erence to the lever 72. This" regulation may be also efiected by oblique position of the slot. t with reference to the lever t, whereby the slotted members can then be adjustably secured on the lever. In both cases theslot can be constructed curved instead of straight. For the purpose of the invention, 'it will also be satisfactory if'only one rod 2 and accordingly only one'lever t, 'v is provided.

always held straight and in the correct 'posi tion'when'rais'edand lowered-.- In order with this construction of the connecting frame, to 3 permit a ready adjustment'of the patient to the stand, the screen 0 is pivotally secured on one of the frame parts 6, so that the screen can be turned upas indicated in Fig. 3. This mounting of the screen so that it can be turned up is of itself known and is also applicable in the case of one-sided arrangement ofthe rod p as well as with the constructional example according to Fig. 1.

The counterpoise and the fixing device may beoperatedffrom the place of observationin the vicinity of the translucent screen 0 or the box, for example, by means of a flexible'shaft or the like. Fig. 4 shows a corresponding arrangement of the counterpoise.

The "weighto isprovided with a recess with a recess with which it is mounted on the free end of theilevers f,lf (Fig-1) or the lever arrangement '0, (Fig. 3). The recess is not boredright through'so that the one end wall of the. weight remains complete. Secured on'this end wall and located in the'interior of the weight is a threaded spindle a with which the flexible shaft 2i leading towards the point of observation inthe vicinity'of the illuminating screen is connected. The levers f, f and o are made of steel tube; and in fact all levers and struts of the frame may be made of tubes, even those of Fig.1. Thus the flexible'fshaft 2 ma be placed in the interior of the tubes'so that it canbe mounted in a protected condition. On theend of the lever on whichthe'weight 0 is mounted, there is a threaded guide 5 for the spindle a, so that by rotation of the spindle by means of the .fiexible shaft, theposition of the weight and thus its action can be varied. It is appropriate to'mount on theweight a tubular sleeve 25 so that on lengthening the weight lever, thespindle e is always covered and protected.

The mounting ofthe flexible shaft in combination with the fixing." device isv eifected accordingly in similar'manner. By this means, omitting the threaded spindle 2,: the

flexible shaft .2 can be connected-directly with :the fixing screwJi (Fig. 1)=and at w I The lever'devi'c'es described 1 are, of course,

also applicable with the well-known connecting. .memberswith Rontgen stands with swinging arrangement of the screen and box holder. r

It will be noted that the support I) is intended to carry either the translucent screen or the Rontgen plate holder, interchangeably, whicheveris required,and the phrase support for Rontgen ray apparatus in", the

claims, is intended todescribe the support above. V

Y I claim for carrying the screen orthe plate holder, as

Riintgenobservation and photographyv of a patient in various positions, the combination 1. In Rontgen ray apparatus'adapted for of a stand, a support for Rontgen ray apparatus adapted to be moved towards and away from a patient, and means for adjustably supporting said support at various desired heights, comprising a member carrying said support, and arranged for movement in its axial direction only lever means pivoted to said stand and connected to said member to cause movement thereof in said axial direction, and an adjustable counterpoise connected to an arm of said lever means and arranged to balance said support and carried and connected parts, at a desired height of said support, varying in accordance with the position of said counterpoise, each difi'erent position of said counterpoise corresponding to a different height of said support.

2. In Rontgen ray apparatus adapted for Rontgen observation and photography of a patient in various positions, the combination of a stand, a support for Rontgen ray apparatus adapted to be moved towards and away from a patient, and means for adjustably supporting said support at a desired height, comprising means carrying said support, guiding means on said stand constraining said carrying means to move in its axial direction only, a multiple-armed lever pivoted to said stand and having one arm connected to said carrying means by a pin and slot connection, and an adjustable counterpoise connected to another arm of said lever, arranged to balance said support and carried and connected parts at a desired height of said support, varying in accordance with the position of said counterpoise, each different position of said counterpoise corresponding to a diflerent height of said support.

3. In Rontgen ray apparatus, the combination of a stand, a support for Rontgen ray apparatus, and means for adjustably supporting said support at diflerent desired heights, comprising means carrying said support, a multiple-armed lever pivoted to said stand, one arm of said lever having a nonrigid pivotal connection with said carrying means causing vertical movement of the latter, a counterpoise on another arm of said lever, and means for adjusting the arms of said lever with respect to one another to equalize the moments of said support and counterpoise for a desired adjusted height of said support.

4. In Rontgen ray apparatus, the combination of a stand, a support for liontgen ray apparatus, and means for adjustably supporting said support at different desired heights, comprising means carrying said sup port, a multiple-armed lever pivoted to said stand, one arm of said lever having a nonrigid pivotal connection with said carrying means causing vertical movement of the latter, and a counterpoise on another arm of said lever, said arms being separate from one another and carrying cooperating means adjacent to the pivots thereof whereby the angular relation between the arms may be adjusted.

5. In Rontgen ray apparatus, the combination of a stand, a support for Rontgen ray apparatus, and means for adjustably supporting said support at a desired height, comprising a pair of rods carrying said support and having transverse extensions, said stand serving as a guiding means for the ends of the transverse portions of each rod and comprising guiding means for the vertical portion thereof, constraining the same to move vertically, a multiple-armed lever pivoted to said stand, and so connected at one end to said rods as to cause vertical move ment thereof and a counterpoise on another arm of said lever.

6. In Rontgen ray apparatus, the combination of a stand, a support for Rontgen ray apparatus, means for adjustably supporting said support at a desired height, comprising a member carrying said support, a lever pivoted intermediately to said stand, one arm of said lever being connected to said member, an adjustable counterpoise carried by a second arm of said lever, a threaded guide carried by said second arm, a threaded spindle rotatably mounted in said guide and connected to said counterpoise, and a flexible shaft connected to said spindle and extending to the position of an operator for the apparatus.

7 In Rontgen ray apparatus, adapted for Rontgen observation and photography of a patient in various positions, the combination of a stand, a support for Rontgen ray apparatus adapted to be moved towards and away from a patient, and means for adjustably supporting said support at various desired heights, comprising a member carrying said support, guiding means for causing said member, when moved, to travel in a desired path, a lever arm pivoted to said stand and connected to said member, a second lever arm pivoted to said stand and connected to move with said first arm, counterpoise means carried by said second arm arranged to balance said support and parts carried by and connected therewith, at a desired height of said support, with said second lever arm making a definite angle with the horizontal at I 1 said support and; arranged. for movement in its axial direction only, level means pivoted V to said stand and connected to said member to balance said support and carried and connected parts at a desired height of said sup-- 1 V port, varying inaccordance ,with the position of said counterpoise, and means operable at a, distance from said counterpoise-for varying its position on its said lever arm.

' "In testimony whereof I have hereunto aiffixed myfsignature. v y ,E RNS TPOHL.

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