US 2261297 A
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Description (OCR text may contain errors)
Nov. 4, v1941'.
Filed March 3, 1941 2 Sheets-Sheet l Nov. 4, 1941. F. A. sElB HOSPITAL BED CRANE Filed March 3, 1941 2 Sheets-Sheet 2 'INVENTOR M ,M
Patented Nov. 4, 1941 vUnirsestares `ParaNr HosrrrAL BED CRANE y Frederick Anthony Seib, Union City, N..J.
Application March 3, 1941, Serial No. 381,489
This invention relates to a body lifting crane and in particular, to a hospital bed crane for lifting patients.
An object of this invention is the raising and removing from a bed, or the transferring from one bed to another of the human body, in a prone position or with the trunk and leg members in angular relation, within the range of from a prone position to a substantially sitting position. Furthermore,V this invention is directed to the provision of means for mechanically raising, removing from, and returning of a patient to a bed with the least disturbance of the general position of the patients body and in particular, any reclining position, as distinguished from a prone position, which may be dictated by the pathology or the physical nature of the patients ailment.
Another object is to provide means for judicously distributing the lifting eifort along the body of the patient when it is necessary to avoid placing pressure or strain upon certain areas of the patients anatomy to avoid possible retardation of therapy and to spare the patient from pain.
A further object is to provide safe, simple and rapid operability by eliminating all wires, straps, belts, pulleys, complicated and exposed gear mechanisms, multiple adjustments, settings and the like.
For a detailed description of the invention, reference will be made to the accompanying drawings in which- Figure 1 is a perspective view with one end of the lifting frame elevated and the sections of the side bars of the lifting frame locked in straight line positions.
Figure 2 isa perspective view with both ends ofthe lifting frame elevated and the sections of the side bars of the lifting frame in angular relation to one another.
Figure 3 is an end elevation of the device with various positions of the lifting paddles shown in dotted lines.
Figure 4 is a fragmentary sectional View of a leg member and the associated elevating gear mechanism.
In Figures l and 2 the numeral I indicates one of four base leg members equipped in a known manner with casters. 2 is a hub positioned between the extremities of each of the base leg members and is adapted to encase a gear drive which will be described in detail infra. 3 is a transverse brace member between adjacent hubs adapted to enclose a drive shaft operatively connected to lthe gear drive in adjacent hubs 2 and having a hand'wheel E operatively affixed to 'one end thereof. 5 is a transverse brace member between the upper extremities of adjacent base leg members and 6 is a longitudinal bracev member between'opposite transverse'brace members 5, 5,.
Referring now to Figures 3. and 4 wherein I is a base leg member, 2 a `hub positioned between the extremities of the baseleg rmember andv 3 a transverse brace'member between adjacent hubs, I9 is a drive shaft encased in'3Vv with a driving gear 2E) aixed thereto. 2i is a ldriven gear operatively engaged with the driving kvgear 2U and lis affixed vto anl elevating'screw 22 riding on a suitable thrust bearing inI hub 2'. 23 isan internally threaded lug rendered unitary with lifting leg member 'I telescopically engaged in base leg member I and the; said lug isoperatively engaged upon the elevating screw 2'2. When shaft I9 and gear 20 are caused to rotate by turning hand wheel i in Figure`3, thegearZI responds and causes elevating screw 22 to'vrotate. The internal thread of the lug 23 responds' to the drive of the helical spline on the elevating screw 22 and accordingly raises the lifting leg member l. The drivev shaft simultaneously' operates an identical elevating Iscrew in the adjacentbase leg member thus elevating adjacent lifting leg membersr simultaneously. To lower legv members l, the direction of rotation of hand'wheel` 1i is reversed. Thus the geadrive and elevatingy gear mechanism are fully encased within the base frame and it is to be understood that the course or effective length of the lifting leg member 'l may be increased by designing the hubs 2 at a lower position along the base leg member I.
Referring again'to Figuresv 1 and2, 'I is a lifting leg member telescopically engaged in base legY member I and operatively engaged with the elevating gear mechanism as indicated supra, 8 is armale member of 'longitudinal telescoping'lifting members 9 and is pivotally engaged with lifting leg member 'i atta; 9 is the outer or female member of the longitudinal telescoping lifting members, with a central pivot lil and engaged upon male members 8 as shown in Figure 2. A transverse abutment member Ii acts as a fulcrum for thev 'longitudinal telescoping lifting members Whenvthe members are employed for lifting a body with the* trunk and leg members in angular relation. I2 `is a transverse torque brace member which is rendered unitary with adjacent extremities` of female members 9 and, in addition to bracing` the lifting frame, prevents membersy 9A from rotating about vmalevmembers 8. Locking Ts I3 are slidably and rotatably engaged upon member 9 when it is desired to effect a lift with the longitudinal telescoping lifting members in a straight angular position, the locking Ts I3 are slid over the pivots I0 and fastened to the member 9 by means of a locking pin I6 engaging a suitably positioned orifice in member 9.
Referring now to Figures 1 and 3, I4 is one of a plurality of suspending Ts slidably and rotatably engaged upon the member 9. I5 are suspending shanks rendered unitary with the suspending Ts I4. I6 is a locking pin adapted to engage suitably spaced orifices along the member 9 to lock the Ts I4 with suspending Shanks I5 in an operative vertical position. It is to be noted that locking Ts I3 also serve as suspending Ts. I1 are body supporting members pivotally mounted upon the suspending shanks I5 at I8. 'I'hese pivotable body supporting members lock either on a line with the axis of the suspending shanks I5 or at an operative right angle with the same by means of locking pins 24 engaging suitably positioned orifices in body supporting members I'I.
In Figure 3, the lifting paddles comprising I4, I5 and I`I may be swung from an operative position through 270 degrees and brought to rest on the opposite longitudinal telescopic lifting member 9 with body supporting member I'I locked in straight angular position with shank I5, when it is desired to have all lifting paddles out of way as when approaching a bed with the crane.
Figure 1 is a showing of the crane in a straight angle lift but at an angle with the horizontal as when lifting a body from an inclined plane. It will be apparent that when a straight angle horizontal lift is desired, the opposite ends of the lifting members are raised in unison from an original horizontal position.
Figure 2 is a showing of the crane as when lifting a body from and in a position with the trunk and leg members in angular relation. Such or a greater angular lift up to a substantially sitting position is rendered possible by the telescoping longitudinal lifting members which provide the necessary increase in length of the longitudinal lifting members.
The shape or form of the body lifting members I'I may be varied as in Ila, Figures 1 and 2, or in any other manner within the spirit and scope of the invention.
When it is desired to employ the crane, it is rolled into position over the bed of the patient, straddling the bed, with all lifting paddles swung up and at rest over opposite longitudinal lifting members. The longitudinal lifting members are then elevated into the desired angular relation to correspond with the position of a patients or invalids body whereupon the lifting paddles are individually and selectively swung down and placed under the body to be raised.
Locking pins are spring operated throughout and automatically engage orifices when aligned with the same. On member 9, concentric grooving of the member in a line with the orifices as shown by way of illustration at 25 on Figure 1 is practiced to eliminate the necessity for hunting on the part of the operator. The locking pin, under pressure of a spring, engages a groove as the T member is slid along member 9 and the orifices in member S are so positioned that the pin engages the orifice when the lifting paddle is swung into an operative position. To release a pin, the head at I6 is pulled sufficiently to disengage the orifice when the T member is again free to rotate while the grooves 25 are so shallow that mere sliding pressure on a T will pass it from one groove to the next. The body supporting members, also by means of spring operated pins, lock in a lifting position.
The lifting frame is then engaged upon the body of the patient. By operation of the hand wheels in unison, the patient is elevated from contact with the bed whereupon he may be transported away from the bed and returned thereto in a like manner.
1. In a bed crane, a mobile base frame comprising base leg members, a hub positioned between the extremities of each of said base leg members adapted to encase transmission gears comprising driving and driven members, trans verse brace members between adjacent hubs adapted to encase drive shafts, the said drive shafts operatively connected between adjacent hubs to the driving members of the said transmission gears, elevating screws unitary with the driven members of said transmission gears and encased in said base leg members, hand wheels operatively connected to said drive shafts, transverse brace members between said base leg members at the upper extremities thereof, longitudinal brace members between said last mentioned transverse brace members; and a lifting frame comprising lifting leg members telescopically engaged in said base leg members, internally threaded lugs rendered unitary with the lower extremities of said lifting leg members and operatively engaged upon said elevating screws for vertical displacement, longitudinal telescopic lifting members pivotally engaged with opposite upper extremities of said lifting leg members comprising male members engaged upon said lifting leg members in said pivotal manner and pivotally connected female members engaged upon said male members, a trans- Verse abutment member between said female members and to one side of the central pivots in the same, transverse torque brace members between adjacent ends of said pivotally connected female members, locking Ts slidably and rotatably engaged upon said female members adapted to lock said central pivots on said female members in straight line positions; a plurality of lifting paddles comprising suspending Ts slidably and rotatably engaged upon said female members, suspending shanks rendered unitary with said suspending Ts, including said locking Ts for said central pivots on said female members, locking pins in said Ts adapted to engage said female membersthrough openings in said female members adapted to lock said Ts with said suspending shanks in an operative position, body supporting members pivotally mounted upon said Shanks and locking pins in said suspending Shanks engaging said body supporting members with said supporting members in operative relation with said Shanks 2. In a bed crane, a mobile base frame comprising base leg members, hubs positioned between the extremities of the base leg members and adapted to encase transmission gears vcomprising driving and driven gear members, transverse brace members between adjacent hubs adapted to encase drive shafts, the said drive shafts operatively connected to the driving members of the transmission gears between adjacent hubs, elevating screws encased and suspended on thrust bearings within the base leg members and unitary with the driven member of the transmission gears, hand wheels operatively connected to the drive shafts, transverse brace members between the base leg members at the upper eX- tremities thereof and longitudinal brace members between the said last mentioned transverse members; a lifting frame comprising lifting leg members telescopically engaged in the base leg members, internally threaded lugs rendered unitary with the lower extremities of the lifting leg members and operatively engaged upon the elevating screws for vertical displacement; means for lifting the human body with the trunk and leg members in angular relation from a prone position to a substantially sitting position comprising longitudinal telescopic lifting members pivotally engaged with opposite upper extremities of the lifting leg members consisting of male members engaged upon the lifting leg members in said pivotal manner and central pivotally connected female members engaged upon the male members, a transverse abutment member slidably mounted between the female members and to one side of the central pivots in the same, transverse torque brace members between adjacent ends of the central pivotally connected female members, a plurality of lifting paddles comprising suspending Ts slidably and rotatably engaged upon the female members, suspending Shanks rendered unitary with the Ts, locking pins through the Ts and orifices in the female members adapted to lock the Ts with the suspending Shanks in an operative position, body supporting members pivotally mounted upon the lower extremities'of the shanks, locking pins through the body supporting members and orifices in the lower extremities of the Shanks adapted to lock the body supporting members in operative relation With the Shanks.
FREDERICK ANTHONY SEIB.