Nov. 9, 1965 G. B. BLONSKY ETAL 3,216,423
APPARATUS FOR FACILITATING THE BIRTH OF A CHILD BY CENTRIFUGAL FORCE 4 Sheets-
1 Filed Jan. 15, 1965 INVENTORS 656/966 3 BLO/VSKY BY 0714410775 5.
EMA/SKY 1965 G B. BLONSKY ETAL F 3,215,423
APPARATUS FOR FACILITATING THE BIRTH 0 A CHILD BY CENTRIFUGAL FORCE Filed Jan. 15. 1965 4 Sheets-Sheet 2 @MVIW (4 FTOEUEK) Nov. 9, 1965 G. B. BLONSKY ETAL 3,216,423
APPARATUS FOR FACILITATING THE BIRTH OF A CHILD BY CENTRIFUGAL FORGE 4 Sheets-Sheet 3 Filed Jan. 15, 1963 W I V 85 INVENTORS GEO/165 Z31 BlO/VS/(F BY Gil/M10775 5 BLO/VSK/ Nov. 9, 1965 G. B. BLONSKY ETAL 3,
APPARATUS FOR FACILITATING THE BIRTH OF A CHILD BY CENTRIFUGAL FORCE Filed Jan. 15, 1963 4 Sheets-Sheet 4 Tia. 4. M
1 INVENTORS 650266 5. sum/5A4 Y CHARLOf/E 55A own Arrow/5y:
United States Patent 3,216,423 APPARATUS FGR FACJILITATING THE BIRTH 9F A CHILD BY CENTRIFUGAL FORCE George B. Blonsky and Charlotte E. Blonsky, both of 2440 Sedgwick Ave., New York 68, N.Y. Filed Jan. 15, 1963, Ser. No. 251,516 14 Claims. (Cl. 128361) The present invention relates to apparatus which utilizes centrifugal force to facilitate the birth of a child at less stress to the mother.
It is known, that due to natural anatomical conditions, the fetus needs the application of considerable propelling force to enable it to push aside the constricting vaginal walls, to overcome the friction of the uteral and vaginal surfaces and to counteract the atmospheric pressure opposing the emergence of the child. In the case of a woman who has a fully developed muscular system and has had ample physical exertion all through the pregnancy, as is common with all more primitive peoples, nature provides all the necessary equipment and power to have a normal and quick delivery. This is not the case, however, with more civilized Women who often do not have the opportunity to develop the muscles needed in confinement.
It is the primary purpose of the present invention to provide an apparatus which will assist the under-equipped woman by creating a gentle, evenly distributed, properly directed, precision-controlled force, that acts in unison with and supplements her own efforts.
In accordance with the invention, there is provided rotatable apparatus capable of subjecting the mother and the fetus to a centrifugal force directed to assist and supplement the efforts of the mother so that such centrifugal force and her efforts act in concert to overcome the action of resisting forces and facilitate the delivery of the child.
For a better understanding of such apparatus, as well as the advantages and novel features thereof, reference is made to the following description which should be read in connection with the accompanying drawings, in which FIG. 1 is a top plan view of apparatus embodying the invention and showing the expectant mother in position thereon;
FIG. 2 is a side elevational view of the apparatus shown in FIG. 1;
FIG. 3 is an end view taken from the left of FIG. 2;
FIG. 4 is a side elevational view of a modified form of the means for supporting the mother on the apparatus; and
FIG. 5 is a view similar to FIG. 4 showing another embodiment of such means.
Referring more particularly to FIGS. 1 to 3 of the drawings, the numeral indicates generally a concrete floor slab of sutficient weight and strength to securely support the apparatus of this invention in its operations. Secured to the
10, as by anchor bolts 11, is the base plate 12 of the apparatus. The base plate may be made of heavy cast iron and has bolted thereto an anti-friction bearing 13 for the main
14, a motor 15, a controller 16, a speed reducer 17 and a
18. The motor shown is a vari-speed vertical gear motor which is controlled by the controller 16, and which is arranged to drive the main
14 at a closely controlled variable speed of revolution, through a motor sheave 19, the speed reducer 17 and a
20 secured to such shaft.
Bolted to the upper surface of
20 are two
25, arranged in spaced parallel relation on opposite sides of the
14 and on which are mounted in transverse relation the main I-
26, 26. The I-beams are likewise disposed on opposite sides of
14 and are balanced on the
25, 26, in spaced, parallel relation. Welded on the I-
26, 26 are a series of spaced, transverse,
27 on which is aflixed a
28 of elongated rectangular form and through the center of which extends the axis of the
14. Mounted on the
28 is a removable stretcher frame generally designated 24 and composed of a base plate 29 adapted to lie directly upon the
28, two transverse aluminum end I-
30, 30 and two longitudinally extending
31, 31 which are welded to the base plate 29 and to an
32 supported by such end beams and side channels. Attached to the outer and inner ends of the
32 are handles 33 by which the
24 may be manipulated when positioned on and removed from the apparatus.
24 extends from one end of
28, past the
14, and to a point beyond such shaft; the arrangement of the frame being such that the head of the woman lying on such frame overlies the upper end of
14 which is located in the region between the two
25, 25. Consequently, the head of a patient on the machine is positioned at or near the center of rotation of the
28. At its other end, the base plate 29/of the stretcher frame is provided with a pair of spaced
35 adapted to be passed through openings 36 in
28 and by then shifting the stretcher frame outwardly, to be brought into engagement with the outer edges of such openings which function in the nature of stops and coact with
35 to prevent further outward movement of the frame during the operations of the apparatus. The outer edges of the openings 36 are reenforced by a
37 which is welded on the top front end of the
28. Adjacent to the other or inner end of base plate 29, the
28 has suitably secured thereto two
38 with which two holes in such base plate register when the
35 are properly abutting the outer edges of the openings 36 and the associated edge of the
37. When the
38 are projecting through such registered holes the base plate 29 is secured to the
38 and the other end of the
28, such deck has welded thereto a plurality of transverse I-beams .5 for supporting a ballast deck 46, which beams and deck 46 are designed to partially counterbalance to a given extent the stretcher frame to be mounted on the remainder of
28. The ballast deck 46 has fixed thereto a number (about ten) of aluminum ballast water boxes or
47, each having the capacity to hold 20 pounds of water when the
28 is revolving. Each of the
47 is provided with a
48, a drain faucet 49 and a sight glass 50 to enable filling it with an exact amount of water. The ballast water to be filled in the
47 should exactly counterbalance the difference in the total weights on opposite sides of the axis of rotation of
28 due to the weight of the body of the woman on the stretcher, the weight of the stretcher and its associated equipment, the weight of the ballast deck 46 and the
47, etc. in order to assure a smooth rotational movement of the machine.
24 is provided with equipment for securing the prospective mother suitably for the operation and for assuring the safe delivery of the child. The womans head is placed on a
55 which is held in position on the
32 by a plurality of
56 so that her head may be located at or near to the center of rotation of the machine. Underlying the pelvis of the woman and mounted for longitudinal slidable movement on the
32 is a
58 in the form of bolts in slidable engagement with
59 extending longitudinally along the sides of
32. When the plate is located in the most appropriate position for the expectant mother, the wing nuts on the bolts forming the
58 are tightened to secure the plate in such position. The
57 has welded thereto adjacent to each side of the womans hips two upright
60, 60 adapted to slidably support a
61 consisting of a cast aluminum half girdle or skirt covering only the lower abdomen and the sides of the hips and having a free open passage for the child to be born. The
61 is slidably connected to the four guide plates ’60 by screws which are welded to the vertical sides of such member and project out through the slots in such plates, and
62 which are tightened on such screws to hold the
61 in an adjusted position on the
60. When the
61 is properly adjusted relative to the perspective mother, it prevents movement of her abdomen radially above and over the pelvis, thus assuring that all movement of the fetus will be through the natural channel, which is the main central opening in the pelvic bone. The
61 also funnels the centrifugal pressures of organs lying between the fetus and the head of the woman towards and against the fetus, thus augmenting the latters tendency to be pressed out of the womb through the pelvic opening and out of the mothers body.
Positioned outwardly of the
57 and mounted on the
32 so as to be located beneath the womans thighs is a second sliding
65 provided with guide members in the form of wing bolts 66 which extend through longitudinally extending slots 67 in the
32 to adjustably connect such
65 to the deck. Fixedly mounted on the
65 in any suitable manner are a pair of
68, 68. Inasmuch as thepla’tes ’68, 68 are the main agents for preventing’the womans body from being moved radially of the axis of rotation by the centrifugal force, they are of great importance and should be made particularly sturdy and be securely connected to
65. Also as the whole of the centrifugal force of the womans body will be transmitted through the slide plate ’65 to the
32, it is advisable to use wing bolts 66 of strong construction and possibly more than two pairs of the same.
Located between the side edges of the
65 and the side edges of the
32 are a pair of
70, 70 slidably connected for longitudinal adjustment on
32 by the
72 in the
32. Suitably secured to each
70 is a
73 for receiving and holding the womans foot in proper relation to her position during the operation.
Also positioned on the side edge portions of the
32 adjacent to the sides of
65, and located between the
70 and the ends of the
57, are two
76, 76. The
76 are each slidably connected to the
32 for longitudinal adjustment thereon by wing bolts 77 and
78 in such deck. Each of the
76 is provided with a
79 for the woman in the operation of the machine.
In addition to the aforesaid supports and grips, the apparatus is provided with several straps to assure the safe, steady and comfortable positioning of the woman on the stretcher. Thus, the head is held firm by a chin or
82 detachably connected at its ends to the
32. The body is steadied by a
83 provided on the
57, and the thighs are firmly held in the
84 connected to the sides of such plates.
Means are provided to assure the safe delivery of the fetus and to stop the machine immediately upon such delivery. These means comprise a pocket-shaped reception net 88 made of strong, elastic material and supported under tension by
89 secured at one end by the tail hook 90 to the
91 fixed to the outer end of
65, and secured at their other diverged ends by the
92 to the
68. When properly supported in this fashion, the net 88 is barely in contact with the
93 of the automatic switch-out hinged L lever. The horizontal part 94 of the hinged L lever rests firmly on the switch out
95, which latter rests lightly, but firmly, on the spring switch contactor 96. The bottom or closed end of the net 88 is lined with a thick wad of
97. When the fetus leaves the mothers vagina and lands on the
97 in the net 83, its Weight, as a result of the rotation of the machine, exerts a radial centrifugal force on the bottom of the elastic net 88. This force on the net 88 presses on the upright switch-
93 causing the depression of the horizontal switch-out plate 94 and the switch-
95, which through a known conventional circuit arrangement (not shown) causes an electric switch in the control box 16 to stop the drive motor 15 and the rotation of the whole machine.
18 is provided adjacent to the controller 16 to enable the operator to stop quickly the inertial rotation of the machine after the current is switched ofi either by the new born child, or by the operator on instruction from the gynecologist in charge of the operation, or by suitable automatic means which come into operation when the rate of revolution of the machine, either through mistake or malfunction, exceeds the amount considered safe for the particular patient thereon. In the construction illustrated in FIGS. 1 to 3 of the drawings, such as automatic means is shown as constituted of a steam engine centrifugal ball governor mounted on a
106 over the center of rotation of the machine. The
106 is mounted on
107 welded to the bottom surfaces of the I-
108 of the governor 105 carries two adjustable vertical switch-out
109 which cooperate with a
110 positioned to control a circuit in the control box 16 at a given rotational speed of the governor. As the speed of rotation of the governor increases to such given speed, the
111 fly outwardly and upwardly and lift the sliding
108, which raises the
109 and causes them to operate the
110 to cause suitable means in the controller 16 to switch out the motor 15.
For safety sake, the machine is enclosed in an annular fence 1’15 capable of excluding all personnel from the reach of the revolving
28. The fence 115-is equipped with two
116 which can be opened before and after spinning to facilitate safe access of personnel-while installing or dismantling the stretcher 24- on the
28. The gates are provided with hinge spurs 117 which will not permit rotation of the
28 unless the
116 are closed.
It will be understood from the aforesaid description of the embodiment of the apparatus illustrated in FIGS. 1 to 3 of the drawings, that the expectant mother is initially installed on the
24 at a place remote from the apparatus. The stretcher is readily removed from the
28 by unscrewing the
39, lifting the head end of the stretcher up from the deck 23, and then sliding the
35 of the stretcher bottom plate 29 out of the holes 36 in the
28. The dismantled stretcher is then placed on a carting table and wheeled to the patients bed. The patient is weighed and measurements are taken to enable proper adjustment of the
70, 70 and the
76, 76. When such plates are properly adjusted for the patient, they are fastened firmly and securely in place by tightening their associated wing nuts. The patient is then placed in position on the
24 with her head on the pillow so that it will be near or at the center of rotation of the machine. The
61 is then secured in position on the standards 69 and the inside surface of the girdle is packed firmly but not tightly with
62. The thighs of the woman are placed inside the thigh holders 6%, 68 and her feet are placed inside the
73, 73. In the placement of the patient on the stretcher, the several plates on which the
73, 73 and hand grips 79, 79 are mounted, may be additionally adjusted so that the patient is comfortably, but properly and firmly positioned on the stretcher. The
82, 83 and 84 are now put in place and tightened to restrict the movement of the head, torso and thighs, respectively. The infant reception net 88 is then installed in position by attaching the
9t and 92 to the
91 and to to the
68, 68, respectively. The inside of the net is provided with the wad of
97 to protect the child against too direct a contact with the
93. The patient is now ready to be wheeled from her bed or the preparation room to the delivery room.
At the delivery room, the
24 is removed from the carting vehicle and placed on the
28 of the machine. In doing this, it is believed preferable to lift the head end of the stretcher about two feet above the foot end to enable the
35 to be moved more readily through the openings 36 in the
28 until such extensions are firmly butted against the outer edges of such openings and the butting
37. In the same movement, the
33 are threaded through the associated holes in the head end of stretcher plate 29 and such plate 29 is brought to rest in full contact with the
39 are then firmly screwed onto the
38 to solidly and immovably aflix the stretcher and the patient to the
28. While the stretcher is being lowered to horizontal position on the
28, the switch-
95 passes through openings provided for it in the
29 and 32 and comes into position to be actuated by the horizontal switch arm 94.
When the patient has been properly installed in the machine, the required counter ballast weight of water, determined by the pre-operational weighing of the patient, is loaded through the
48 into the
116 in the
115 are closed and latched after the stretcher carting vehicle and all personnel, except for the patient, leave the enclosure of the
116. The gynecologist in charge of the operation instructs the operator as to the gravitational force to be applied to the fetus and the latter takes his place at the controls 16 of the apparatus.
When the gynecologist decides that the most opportune time for childbirth has arrived, he instructs the operator to start the machine. When the operator moves the controller handle 21 from zero position the motor is started and through the speed reducer l7 and the associated set of sheaves and belts, including the sheaves l9 and 20, the I-
26 and everything supported thereby are revolved horizontally about the vertical axis of
14. As the operator moves the controller handle 21 to feed more and more current to the motor 15, the rotational speed of the machine progressively increases and so does the centrifugal force. The relationship of speed of rotation and of acceleration at three feet distance from the center of rotation is illustrated by the following table:
1 Acceleration gs is equal to that caused by the gravitational force of the Earth.
Both the body of the mother and the fetus are subjected to centrifugal forces which are functions of distance from the center of rotation and the speed of rotation. The body of the mother is firmly held in position against movement as a whole under such forces by the
73, 73, the
63, 68, the
61, the hand grips 79, 79, and the
82 ,83 and 84. However, there are no external means present which will interfere with the fetus tendency to respond to the action of the centrifugal force. Only those forces which oppose normal childbirth i.e. the frictional and constrictional forces within the mother, are to be overcome by the combined action of the mothers muscles and the centrifugal force created by the rotation of the fetus in the machine. The physicians estimate of how much of this centrifugal force will be needed to assist the mother in achieving the birth of the child and the maximum gs that can be used with safety on the particular patient, are decided upon before the operation. During the operation, the operator gradually speeds up the machine to the predetermined force which is expected to produce the birth of the child, and if such force does not accomplish this, he does not exceed it, unless the physician decides to go the higher gs. He cannot, however, go beyond the maximum gs for which the machine has been set without causing the governor to shut down the machine. When in the operation of the machine, the operator reaches a rate of rotation at which the combination of pressures produced both by the created centrifugal force and by the mother exceed the childbirth resisting forces (friction and constriction), the movement of the fetus occurs and the child is delivered into the net 88. While in the net, the child is still subjected to the action of centrifugal force and is caused by such force to firmly press against the elastic bottom of the net 88. As the
89 and the net give somewhat to this force Which is equal to the weight of the child multiplied by the number of gs it is subjected to, the
97 in the net is pressed by the child against the
93 which is actuated to cut the power from the motor 15 and may be utilized to activate an electric bell, announcing the event. The operator then applies the handbrake 18 to gently bring the machine to a complete stop. Thereupon, the stretcher with the mother on it is detached from the machine and transported to her room.
As has been above indicated, the apparatus depicted in FIGS. 1-3 of the drawings is shown by way of example and it is within the contemplation of the invention to include other embodiments containing the essential features thereof. Thus, instead of mounting the stretcher horizontally on the machine which is the preferred condition where the number of gs employed in accomplishing the birth of the child is relatively high (say above 8 gs), the machine may be constructed as is indicated in FIG. 4, to take care of births which may be brought about at much lower gs. In this connection, and before entering into a description of FIG. 4, it might be said that the centrifugal force carried by rotation of an object about a vertical axis has a horizontal direction, but due to the always present gravitational force, the actual force exerted on such object is a resultant of these two forces. The influence of the gravitational force on the direction of action of the resultant force is greatest at the lower rotational speeds, and its effect becomes progressively less and less important at the higher gs so that the direction of the resultant progressively approaches the horizontal. Therefore, in order to obtain the maximum elfect of the resultant on the fetus, especially at the lower rotational speeds, the mother should be placed in such a position on the machine as to obtain the nearest possible parallelism between the direction of action of the resultant and the line connecting the center of gravity of the fetus and the center point of the opening of the pelvis through which the fetus has to travel on its way out. To enable this to be accomplished at the lower rotational speeds, at which the gravitational force is of increasingly greater importance, it is necessary that the stretcher be given an inclination corresponding to the pre-diagnosed gs at which it is expected that delivery will take place. This may be accomplished by modifying the above described embodiment of FIGS. 1 to 3 of the drawings to the extent that the
28 of such embodiment is: dispensed with, and instead supporting the
24 directly on the I-
26 and two
120 as is shown in FIG. 4 of the drawings. In such construction, the I-
26 are provided with two
121 to which the foot end of the stretcher is pivotally connected by means of a
122 that extends through openings provided in the
31 of the stretcher. The
120 are securely welded to the I-
26 and are provided with a number of
123 through which a
124 may be inserted to support the stretcher at different inclinations dependent on the predetermined rotational speeds selected for delivery, as is indicated by the dotted partial outlines of the stretcher in FIG. 4. Like the
124 extends through openings provided in the
31 of the stretcher. The
120 also support the frame 106′ for the governor 105.
As is shown in FIG. of the drawings, it is also possible to have the stretcher automatically adjust its slope to the optimum direction at whatever rate of rotation it happens to be spinning at a given moment. This is achieved by hinging the stretcher at its head end on the
120 by means of a removable rod extending through openings provided in the
31 of the stretcher and
125 provided in
120″ at a moderate height above the main I beams 26 of the machine, and letting the foot end of the stretcher rest freely on the outer ends of such I-beams. If, for example, the height of the
125 in standards 120′ is selected so that the angle of repose of the stretcher corresponds to the angle of inclination the stretcher would assume when subjected to a centrifugal acceleration of two gs, no elevation of the foot end of the stretcher will occur before the speed of rotation is high enough to cause a horizontal component of two gs. As soon as that minimum is exceeded, the foot end of the stretcher will leave the surfaces of the I-
26 and rise high-er and higher as the speed of rotation is increased, to provide the stretcher with a slope which corresponds to the resultant of the gravitational and acceleration forces at any given speed of rotation of the machine. Thus, as the physican slowly increases the gs to the value at which the travel of the fetus begins, the centrifugal and gravitational forces automatically adjust the inclination of the mothers body to the optimum position for efiicient application of the accelerating forces. This assures that the patient will be submitted to the very minimum acceleration which is necessary to produce the dislodgement of the fetus. When the child has been delivered and the mother cut out in the manner described in the embodiment of FIGS. 1-3, the foot of the stretcher willreturn to a gentle landing on the I-
26 as the machine decelerates. It will be understood, that in all of the embodiments of the invention it is the primary purpose of the apparatus disclosed to accomplish delivery of the fetus by providing the necessary gs required in any particular instance and this even though the supplementary forces supplied by the patient are zero either because she is too weak to render any assistance at all, or has lost consciousness.
It Will be understood that other changes and modifications may be made in the apparatus without departing from the spirit of the invention, or the scope of the appended claims.
What is claimed is:
1. Child delivery apparatus comprising a centrifuge, means for supporting said centrifuge for rotational movement about a vertical axis, means for holding the patients body against dislodgement by the centrifugal forces created in such rotational movement, with her body disposed radially of said vertical axis in proper attitude for delivery of the child and with her head located at or near said vertical axis, said holding means including means for securing the patients body in place on said centrifuge, means for supporting the patients limbs in child bearing position against the centrifugal forces, and means for supporting the abdomen against such forces, means connected to said supporting means for rotating said centrifuge, means controlling said rotating means to precisely control the rate of revolution of said centrifuge by said rotating means, and means for applying braking action to the revolving centrifuge.
2. Child bearing apparatus such as defined in
1, in which said means for supporting the patients limbs, include means engaging and supporting the thighs of the patient, and means for holding the feet in place.
3. Child bearing apparatus such as defined in claim 2, in which said supporting means additionally include means providing handholds for the patient.
4. Child bearing apparatus such as defined in
1, including a detachable stretcher for carrying the patient to and from said centrifuge, and means positively connecting said detachable stretcher to said centrifuge to form a unitary device, said holding, and limb and abdomen supporting means being mounted on said detachable stretcher.
5. Child bearing apparatus such as defined in
1, including means on said turntable for counter-balancing the weight of the patient thereon, said counter-balancing means including a plurality of containers adjustably loaded With a weighting material to vary the weight thereof, and means for securing said containers to said centrifuge.
6. Child bearing apparatus such as defined in
1, including means located between said limb supporting means in position to receive the discharged infant, said infant receiving means being connected to and supported by said limb supporting means.
7. Child bearing apparatus such as defined in
1, including means enclosing said centrifuge for exclusion of personnel during the rotating movements of said centrifuge and having an entry opening closed by a gate, and means controlled by said gate for controlling the operation of said centrifuge.
8.,Child bearing apparatus such as defined in
1, in which said holding means includes detachable stretcher means having a body supporting portion of sufficient length to enable the patients head to be located at or near said vertical axis of said centrifuge, and means for attaching said stretcher means to said centrifuge against dislodgement thereof in a radial direction with relation to said vertical axis by the centrifugal forces.
9. Child bearing apparatus such as defined in claim 8, in which said attaching means comprises means for connecting the foot end of said stretcher means to said turntable, and means for supporting the head end of said stretcher means raised with relation to the foot end thereof so that said stretcher is in an inclined position relative to said vertical axis.
10. Child bearing apparatus such as defined in claim 9, in which said foot end attaching means pivotally connects said stretcher means to said turntable, and in which said head end attaching means is selectively operable to support the stretcher means at a plurality of given inclinations relative to said vertical axis.
11. Child bearing apparatus such as defined in claim 8, in which said attaching means supports the head end of said stretcher means for pivotal movement about a horizontal axis which intersects said vertical axis, the foot end of said stretcher means being unattached so that said stretcher means automatically assumes different inclinations at different rotational speeds of said turntable above a given rotational speed thereof.
12. Child delivery apparatus comprising a turntable, means for supporting said turntable for rotational movement about a vertical axis and enabling a patient to be positioned in child bearing position on said turntable radially of such vertical axis and with her head located in the proximity of the center of rotation of said turntable, means connected to said supporting means for rotating said turntable at given controlled rotational speeds, means connected to said turntable for holding the patients body on said turntable in said radial position against dislodgement relative thereto by the centrifugal forces created by the rotational movements of said turntable, means connected to said turntable for preventing undesirable distortion of certain parts of the patients body under such centrifugal forces, and means for receiving the child delivered by the patient.
13. Child bearing apparatus such as defined in claim 12, including means controlled by the delivery of the child into said receiving means for controlling the operation of said rotating means.
14. Child delivery apparatus comprising a turntable, means for supporting said turntable for rotational movement about a vertical axis and enabling a patient to be positioned in child bearing position on said turntable radially of such vertical axis and with her head located in the proximity of the center of rotation of said turntable, means connected to said supporting means for rotating said turntable at given controlled rotational speeds, means connected to said turntable for holding the patients body on said turntable in said radial position against dislodgement relative thereto by the centrifugal forces created by the rotational movements of said turntable, said holding means including detachable stretcher means having a body supporting portion of suflicient length to enable the patients head to be located at or near the center of rotation of said turntable, and means for attaching said stretcher means to said turntable against dislodgement thereof in a radial direction with relation to said vertical axis by the centrifugal forces, means connected to said turntable for preventing undesirable distortion of certain parts of the patients body under such centrifugal forces, a flexible receiving member detachably connected to said stretcher means and arranged to receive the child delivered by the patient, and means arranged to be operated by the weight of the child contained in said receiving member to control the operation of said rotating means.
References Cited by the Examiner UNITED STATES PATENTS 2,193,154 3/40 Antinori 248458 2,195,805 4/40 Baker 272-44 2,611,363 9/52 Peters 128134 2,675,564 4/54 Hughes 128l34 OTHER REFERENCES Engineering, May 27, 1955, pp. 662665. Rating, German application 1,127,028, printed Apr. 5, 1962 (K1.
RICHARD A. GAUDET, Primary Examiner.
JORDAN FRANKLIN, DALTON L. TRULUCK,