Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Screen reader users: click this link for accessible mode. Accessible mode has the same essential features but works better with your reader.

Patents

  1. Advanced Patent Search
Publication numberUS1397041 A
Publication typeGrant
Publication dateNov 15, 1921
Filing dateFeb 19, 1921
Priority dateFeb 19, 1921
Publication numberUS 1397041 A, US 1397041A, US-A-1397041, US1397041 A, US1397041A
InventorsThomas Dodds
Original AssigneeThomas Dodds
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Invalid-bed
US 1397041 A
Abstract  available in
Images(2)
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)

T. DOUBS.

INVALID BED.

APPLICATION rlLEn FEB.19. 1921.

Patente Nov. 15, 192L 2 SHEETS-SHEET Z.

narran stares PATENT OFFICE.

INVALID-BED.

remoti.

Specification of Letters Patent.

Patented Nov.. 15, 1921.

Application led February 19, 1921. Serial No. 446,280.

T 0 all fw wm t may concern.'

Be it known that I, THOMAS Donns, a subject of the King of Great Britain, a resident of the town of Thessalon, Province of Untario, Dominion of Canada, have invented certain new and useful Improvements in lnvalid-l3eds, of which the following is a specification. i

rllhis invention relates to improvements in invalid beds, and the objects of the invention are to provide a means whereby a portion of the spring mattress may be raised to bring patients to situp position and simultaneously to provide means which will engage with the under portion of the knees and prevent the patient from slipping downwardly toward the bottom of the bed, to per; mit of the lower end or bottom and the upper or top end of bed being elevated so that the feet of the patient may be brought into position above that of his head or the head brought into a position above the feet with the body of the patient lying in an inclined position, to permit of the head piece and foot piece of the bed being folded down so as to clear the ends of the bed, in which `position the bed may serve as an operating table and generally to adapt the bed to better perform the functions required of them.

With the above and other objects in View, the invention consists essentially of the improved construction and "arrangement of parts described in the followingv specification and accompanying` drawings and set forth in the appended claims.

ln the drawings:

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

Fig. 2 is a longitudinal section of the same.

Fig. 3 is a sectional detail of the `foot of the bed. K

Fig. 4L is a detail showing the drum and the ratchet and dog connection.

Referring to the drawings; A represents a bed comprising a frame 10 in which the frame 11 of a spring mattress is mounted. rlhe frame 11 is provided along its lateral walls with lugs engaging a rod 12 to which is connected a plate 13 hingedly connected to a second plate 111 having depending projections 15 extending inside of the mattress frame and carrying a transverse rod 16.

rllhe rod 16 is connected, through the link 17 provided with notches 18 adapted to engage the rod 16, to an arm 19 pivotally connected to the mattress frame 11 as at 19a. rlhe arm 19 is fastened to one end of an arcuate member 19b fastened to a head portion 2O connected to the mattress frame by the pivot 19a. The connecting point of the arm 19 and the arcuate member 19b is provided with a pulley 21 engaged by a wire 22 which has one end fastened to the side rail of the bed. The wire 22 winds around a drum `23 carried by a transversely extending shaft 211 journaled on depending apertured ears 25 from the bed frame. One end of the shaft 2a is square in cross section so that when the upper pivoted portion 20 off the spring mattress is desired to be raised the square end of the shaft is engaged by a crank and the same is rotated thereby winding the wire 22 around the drum 23 and drawing the arcuate member 19b toward the head of the bed thereby raising the head portion 20 and the head of the patient lying thereon. The arm 19 being drawn upon the pivotal movement of the head portion 20, toward the head of the bed, transmits the pull through the link 17 to the rod 16 with which the link is in engagement thereby raising the apex of the plates 13 and 14; which engage the under portion of the knees of the patient to prevent him from slipping downwardly in the bed.

The arm, link and arcuate member together with the wire and drum attachment are provided on both sides of the spring mattress frame so that the head portion 20 may be raised evenly.

rlhe posts 26 of the lower end of the bed are formed hollow and in the same, hollow posts'2lY are slidably mounted. To the top of the hollow post 27 is fastened one end of a wire 28 which extends downwardly inside the' post 27, and throughythe lower end of the same, engages a pulley 29 carried by a pin supported by arms extending from a collar 30 formed integral with the outer post 26. The wire 28 extends from the pulico ley, upwardly to the drum 31 carried by a transversely extending rod 32 journaled in the apertured ears 33 formed integral with the bed frame. The hollow post 27 lis provided with a longitudinal front slot 27ZL designed to afford a free passage for the pulley 29 on the ascension of the same when the tubular post 26 slides upwardly over the post 27.

The transverse rod 32 has one of its ends square in cross section and extending past the ear 33. Keyed to the rod 32 adjacent to the drum 31 is a ratchet wheel 40 designed to coact with a spring controlled dog 41 carried by an extension from the ear 33.

A wire and drum construction is provided also in the second post/26 of the lower end of the bed, but the pawl and ratchet is only mounted adjacent one of the drums 31.

To raise the lower end of the bed the `square end of the transverse rod is engaged by a crank and on rotating the same the wires will be wound around the drums 31 and prevented from unwinding by the spring controlled dog 41 being pressed into every notch of the ratchet 40. The outer posts 26 will thus be caused to slide over the inner posts 27 and the lower end of the bed consequently raised to the desired height. l/Vhen it is desired to bring back the bed to normal position the pawl 41'is disengaged fromthe ratchet by hand pressure and the wire unwound from the drums by means of the crank.

The posts 36 of the head or upper portions of the bed are of exactly the same construction and provided with the same equipment as the posts 26 of the lower end described above.

The head of the bed is worked like the lower end thereof, the constructive parts of the one being duplicated from those of the latter. The square extremities of the transverse rods 32 and 24 are made of uniform size so that the same crank can be used in working the same.

The head shaft 32 also carries adjacent to the drum 31 a ratchet 40 with which a spring controlled dog 41 is designed to coact.

When the upper end or head of the bed is desired to be raised the square end of the shaft 32 is engaged by a crank and rotated whereby the wires 28 will be wound around the drums 31 and will raise the outside posts 36 of the head of the bed to the desired height. The upper end of the bed is rotated back to normal position by disengaging the pawl 41 from the ratchet 40 and reversing the crank.

The* foot of the bed is formed in two sections, the top section 34 being hingedly connected as'a-t`35 to the bottom section, and'the hollow posts 27 slidably mounted within the hollow posts 26 extending a little higher than the hinge 35 so asto engage the upper portion thereof and hold the same rigidly in straight position in alinement with the bottom section of the posts.

The sections 34 canbe lowered by rotating on the hinges 35 after the lower end of the bed has been raised a little so as to clear the section 34 from the overlapping posts 27.

The head of the bed is also formed in two sections 37 and 38, the upper section 37 being hinged to the lower sections at 39. The upper section can be rotated or lowered in a po sition parallel to the lower section 38 by freeing it from the hollow inner posts 27.

The lower ends and the upper end or head of the bed can both be raised and the sections 26 and 37 lowered and the bed may be used as an operating table whenever the same is needed.

It will be obvious that this bed can be very efficiently used, enabling a person to place the patient in whatever position desired, very easily by the manipulation of a crank engaging the squared ends of the several transverse rods.

As many changes could be made in the above construction and many widely different embodiments of my invention within the scope of the claims 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.

Wha-t I claim as my invention is:

1. An invalid bed having tubular posts at the head and foot thereof apertured at the lower extremity, hollow posts telescoping within the tubular posts, flexible members connected to the hollow posts extending through the said apertures and winding means carried by the bed frame and engaging the flexible members.

2. An invalid bed having tubular posts at the head and foot thereof apertured at the lower extermity, hollow posts telescoping within the tubular end posts provided with a longitudinal slot on one side thereof, a pulley carried by each tubular-post and extending within the longitudinal slot, flexible members carried by the upper end of the hollow posts and engaging the pulleys, and winding means carried by the bed frame and engaging the flexible members. j

3. An invalid bed having tubular posts at the head and foot made of two sections, one section being hingedly connected to the other intermediate of their length, inner posts telescopically mounted within the tubular posts and extending a little higher than the lower sections of the posts in order to engage the top sections thereof.

4. An invalid bed having tubular posts at the head and foot thereof apertured at the lower extremity and formed of two seo means carried by the bed frame and engagtioiis, one section being hingedly eoimeetecl ing the flexible members. l0 to the other, hollow posts telesooping within ln witness whereof l have hereunto set the tubular posts and extending higher my hand in the presence of two witnesses.

5 than the bottom section so as to engage the THOMAS DODDS.

upper section of the posts, flexible members lVt-nesses: connected to the hollow posts extending F. E. WILLIAMS,

through the said apertures and winding RUBY MGKENZIE.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US7174588 *Dec 9, 2004Feb 13, 2007Li-Chieh ChenMedical chair having synchronously adjusting function
US20130160207 *Dec 23, 2011Jun 27, 2013Shiou-Jhen WUMedical bed
Classifications
U.S. Classification5/618
International ClassificationA61G7/00
Cooperative ClassificationA61G7/00
European ClassificationA61G7/00