US2687765A - Invalid's convertible bed-chair - Google Patents

Description

Aug. 31, 1954 M. c. HURTUBISE INVALID'S CONVERTIBLE BED-CHAIR 2 Sheets-Sheet 1 Filed Feb. 28, 1952 FIG-2 INVENTOR. May Constance Hurfublse BY I Arron/qr g- 31, 1954 M. c. HURTUBISE INVALID'S CONVERTIBLE BED-CHAIR 2 Sheets-Sheet 2 Filed Feb. 28, 1952 FIG-3 1N VEN TOR. May Constance Hurfubise Patented Aug. 31, #1954 UNITED STATES PATENT OFFICE May Constance Hurtubise, Spokane, Wash. Application February 28, 1952, Serial No. 273,880

My present invention relates to invalidfs convertible bed-chair.

One object of the invention lies in the provision of a bed-chair which comprises constituent parts each cooperating with the others to result in a completely adaptable unit for the :safety and comfort of the patient.

Another object of the invention lies in the provision of a bed-chair which is releasably secured upon a wheeled supporting base.

Another object of the invention lies in the provision of a novel supporting headcarried by the hydraulic means and having securing latches adapted to releasably secure the bed-chair to the supporting base. i l

Another object of the invention lies in the pro vision of a bed-chair which is admirably suited for use by nurses for caring for completely or partially paralyzed invalids who are unable to assist in moving themselves, as from a bed to a chair.

These and other objects of the invention will be apparent during the course of the following description.

In the accompanying drawings, forming a part of this specification, and in which like numerals are employed to designate like parts,

Figure 1 is a perspective view of my improved bed-chair in the chair position and having the patients leg supports adjusted to separate angles,

Fig. 2 is a fragmentary longitudinal cross section taken through the bed-chair in the bed position and showing its supporting head and a portion of the base.

Figure 3 is a vertical cross section of the head for releasably securing the separable parts, and,

Figure 4 is a horizontal cross section as at line 4-4 of Figure 3 looking upwardly.

Referring now more particularly to the drawing, I have shown my improved bed-chair as having a downwardly flared relatively large circular bell-shaped base 6 having caster wheels spaced circumferentially on its lower marginal edge face for mobility. The base is provided with a tube 2|] which is telescopically related thereto and may be shifted vertically therein by any suitable means. A horizontally disposed annular pressure plate 22 surrounds the tube 20 and rests upon the upper end of well 9 and is secured thereto by welding.

A head 4| has a body 42 formed with a downwardly open socket 43 having diametrically opposed set bolts 44 threaded through the depending annular flange 45 and communicating with socket 43. The upper end portion of the tube 4 Claims. (Cl. 155-29) 2 z 20 is fitted into the socket 43 and the set bolts 44 are tightened to releasably secure the head upon the tube 20.

a The upper face 46 of head 4| has a centric circular depression 41 and triradiate slots 5| leading from the outside face and communicating with depression 41, at which points reduced bearings 5| are located. A segmental arcuate depression 48 communicates with the depression 41 at the inward edge and terminates at its outer edge spaced from the outer face of the head and defines an arcuate wall 49. An upstanding triangular boss 50 is fixed centrally of the depres sion 47 and has its three faces diametrically opposed to the axis of each slot 5|.

A cam ring 52 is disposed in depression 41 for rotary motion therein and has a radially extending arm53 extending into the segmental depression 48. The ring 52 is formed with an open center which encircles boss 50 and has cam faces 54. A

Latches 55 are longitudinally movable in slots 5| and have shanks 56 which pass through the reduced bearings 5| and over cam ring 52. Downwardly extending pins 51 carried by the rear end portion of shanks 56 coact with cam faces 54 to retract latches 55 when cam ring 52 is rotated counterclockwise as seen in Fig. 5. Expansion springs 58 are disposed between the inner ends of shanks 56 and the faces of boss 50 and urge the latches to their extended positions with the latches protruding beyond the peripheral face of head 4|.

A flexible cable 59 passes through an opening 60 communicating with the segmental depression adjacent one end thereof opposed to the normal position of arm 53 and is secured at its inner end to arm 53 and has a knob 6| secured on the outer end of the cable 59. I

Covering the upper face 46 of the body 42, I have provided a dome-shaped cap 62 with a central opening 63 counter-sunk to receive a stud bolt 64 which threads into the drilled and tapped boss 50.

Radially extending arms 65 constituting support members are an integral part of head 4| and are located to support the supporting plate 66 of an invalids adjustable chair. Plate 66 has a smooth lower face and is provided with a central aperture 61 which constitutes a receptacle or socket and admits the upper portion of head 4! with the latches 55 extending in overlying relation with the upper face 68 of plate 66. The latches 55 each has an outer end face which is formed with an outwardly and downwardly angled arc to cause them to retract as the plate 66 is lowered over the head 4!.

The chair is provided with tiltable leg rests and back 69 and 70 which are hingedly connected to the plate 66 and selectively adjustable between vertical and horizontal positions by means of worm and gear units H and 13 carried by the plate 66 and operable by hand cranks as 72 and 14. Foot boards 15 are pivotally carried by the leg rests, and arm rests 76 are carried in recesses 17 so that when the several chair parts are aligned in horizontal positions, the resultant bed is a rectangle with no protruding parts and of a size adapted to pass through an ordinary door way.

Having thus described my invention, I claim:

1. In an invalids mobile convertible bedecha-i-r having a base supporting the chair; a bottom plate on said chair and having a smooth lower face; an aperture in the plate; a head carried Jyth'e :base and having :a portion correlated with said aperture, whereby relative horizontal movement of the head and plate is precluded; and

support-ing members carried by said head anddisposed to support said plate against downward movement relative to said head.

2. In an invalids mobile convertible bed-chair having a base supporting the chair; a bottom plate on said chair and having a fiat bottom face; said plate having an axial substantially vertical aperture therein; a head carried by said base and having a body portion adapted to enter said aperture; retractable latches carried by the head and resiliently urged into locking engagement with said plate, whereby the head and plate are releasably united; and a portion of said head being a support for said plate.

3. In a device of the character described, a head for uniting a chair and base comprising a body adapted to be supported on the base; arms carried by the body and extending radially therefrom for supporting said chair, said body extending above the horizontal plane common to said supporting arms; and triradiate latches carried by the body at its upper end, for releasably securing the body to the chair.

4. In a device of the character described, a head for uniting a chair and base comprising a body adapted to be supported on the base; arms carried by the body at its lower end and extending radially therefrom and terminating in a plane substantially midway the height of said body;

triradiate latches resiliently urged outwardly and carried by said body at its upper end; and manually operated cam means for simultaneously shifting said latches inwardly.

References Cited in the file or this patent UNITED STATES PATENTS Number Name Date 279,334 Clark June 12, 1883 366,479 Hammermiller July 12, 1887 463,348 Archer Nov. 17, 1891 513,584 .Leisenr-ing Jan. 30, 1894 2,092,266 Talas Sept. '7, 1937 2,092,669 Greve Sept. 7, 1937 2,476,258 Lundquist July 12, 1949 2,529,780 Miller Nov. 14, 1950 2,509,862 Pratt Sept. 9, 1952 2,613,725 Woodhall Oct. 14, 1952

Images