US1332546A - Invalid-bed - Google Patents

Description

T. DODDS.

INVALID BED.

APPLICATION FILED SEiT. 16. 1919.

Patented Mar. 2, 1920.

UNITED STATES PATENT ()FFICE.

THOMAS DODDS, OF THESSALON, ONTARIO, CANADA.

INVALID-BED.

Specification of Letters Patent.

Patented Mar. 2, 1920.

Application filed September 16, 1919. Serial No..324,164.

lowing is a-specification.

.Thisginvention relates to improvements in invalid beds, and the objects of the invention are to providemeans whereby a portion of the mattress may be raised to bring the patient into a sitting up position and simultaneously to ,providegmeans which will en- ,gage'with the under portionof the knees and prevent the ,patient from slipping down- .wardly toward the bottom of the bed, to

permitiof-the lowerend or bottom, or the upper or topend of the bed being elevated so that the feet of the patient may be brought into position above that of hisihead, or the head brought into a position above the feet with the body of the patient lying in an inclined position, and generally to adapt the bed to better perform the functions required of it.

' WVith the above and other objects in view the invention consists essentially of the improved construction hereinafter described and set forth in the following specification and accompanying drawings forming part of the same.

In the drawings:

Figure 1 is a perspective view of the bed embodying the present invention.

Fig. 2 is a longitudinal section of the same. r

Fig. 3 is an enlarged transverse section of the lower end of the bed showing the locking mechanism.

Like characters of reference refer to like parts in the several figures.

Referring to the drawings, A represents a bed comprising a frame 10 in which the frame 11 of a spring mattress is mounted. This frame 11 is provided along its lateral walls with eyes with which the pins 12 engage and these pins are connected to a pair of hinged plates 13 which may be actuated whereby the apex of the plates will be ra1sed to form a stop to prevent the patient shpping downwardly in the bed when his head has been elevated. The plate 13 remote from that which carries the pins 12 is connected through the link 14 with a rod 15 connected to the upper hinged portion 16 of the frame 11,.and this hinged portion is designed to be actuated by a curvilinearrack 17 and intermeshing pinions 18 as described in my previous Canadian Patent No. 190,399.

'The posts 20 of the lower end of the bed are formed hollow and in the same, posts 21 are mounted provided with racks .22

adapted to mesh with gears 23 carried by the transversely eXtending rod 24 which has a squared projecting end 25 designed to be engaged by a crank lever handle so that on rotation of the rod 2% the gear 23 intermeshing with the rack 22 will feed the rods 21 outwardly and so elevate the lower end of the bed.

The .rod 24 is provided intermediate of its length with aigear 26 with which the spring posts 28 are slidably mounted provided with racks 29 adapted to mesh with gears 30 carried by a transversely extending rod 31 which has a squared projecting end designed to be engaged by a crank lever handle so that on rotation of the rod 31 the gear 30 intermeshing with the rack 29 will feed the racks outwardly and so elevate the upper end of the bed.

The rod 32 is provided with a suitable gear and spring controlled dog (not shown) similar to that described with reference to the rod 24: and whereby the upper end of the bed when elevated may be held in the desired position.

When this bed is in use and it is necessary to bring the patient into a. sitting up posi-.

tion the hinged portion 16 of the frame 11 is elevated through the intermeshing rack and pinion 17 and 18 as described in-my previous Canadian Patent No. 190,399 and during this operation the rod 15 will have moved the links 14 toward the top of the bed, thereby causing the two plates 13 to move about their hinged point so elevating the hinged point and forming an inverted V-shape which will engage with the inner side of the knee of the patient and prevent his slipping down in the bed.

Under some circumstances it is found necessary to elevate the patients feet above his head and when this is necessary the rod 24 is rotated by a crank handle so that the gears 23 meshing with the racks 22 feed the rods 21 outwardly to elevate the lower end of the bed which is held in desired position by the dog 27 engaging with the gear 26. in lowering the lower end of the bed the dog 27 is disengaged from the gear 26 when the bed will lower under gravity. When the patient is going to lie down the nurse or attendant lowers the upper hinged portion 16 of the frame 11 and in so doing the two plates 13 are depressed to lie in a horizontal plane so that the bed will then appear as an ordinary bed with the members of the frame 11 lying in one horizontal plane.

If it is found desirable that the patient should be brought into an inclined position with the head above the feet then the upper end of the bed is elevated by actuation of the rod 31 whereby the posts 29 are fed outwardly from the hollow legs 27 to bring the upper end of the bed to the desired position. The lowering of the upper end of the bed is controlled in the same manner as the lower end and it is thought unnecessary to enlarge upon the same.

From this description it will be seen that I have invented an invalid bed which can be advantageously utilized in hospitals, infirmaries and the like, in which the patient may sit up or recline on the bed in such a position that it is impossible for the patient to slip toward the lower end of the bed and in which the bed may be adjusted so that the invalids or occupants feet can be brought to a position above the height of the head of the said occupant.

As many changes could be made in the aboveconstruction, and many apparently widely different embodiments of my invention, within the scope of the claim, constructed without departing from the spirit or scope thereof, it is intended that all matter contained in the accompanying specification and drawings shall be interpreted as illustrative and not in a limiting sense.

What 1 claim as my invention is:

An invalid bed, comprising a frame formed in two portions, one portion being movable, a pair of transversely extending hinged plates on the frame, one of the plates being connected to the frame, link means connecting the other plate to the hinged por tion of the frame, the hinged plates being designed to form an inverted V-shape when the hinged portion of the frame is elevated.

In witness whereof I have hereunto set my hand in the presence of two witnesses.

THOMAS DQDDS.

Witnesses:

T. E. WILLIAMs, RUBY Kmnr.

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