US1343593A - Adjustable bed - Google Patents

Description

J. R. STARK.

ADJUSTABLE BED.

APPLICATION FILED JUNE 14. 19l9.

1,343,593. Patented June 15, 1920.

2 SHEETSSHEET l.

Zaire/10w)- b 64 J. R. STARK.

ADJUSTABLE BED.

APPLICATION FILED um: 14, 1919.

1 ,343,593. I Patented June 15, 1920.

2 SHEETSSHEET 2.

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JOHN R. STARK, or nasnvinns, Tennessee, LElSIGNQR so ownns srAnK ivmnn- FAC'IUBING COMPANY, OF NASHVILLE, TENNESSEE.

ADJUSTABLE BED.

Application filed June 14,

To all whom it may concern.

Be it known that I, JOHN R. STARK, a citizen of the United States, residing at Nashville, in the county of Davidson and State of Tennessee, have invented certain new and useful improvements in Adjustable Beds, of which the following is a specification.

, This'invention relates to adjustable beds and has for its object the provision of simple and eflicient means whereby the sections of the bed may be easily raised and lowered and effectually held in the position to which they maybe adjusted. The invention relates particularly to adjustable beds of that type in which the bed bottom comprises head, foot and seat sections which may be pivotally adj usted relative to each other and provides means whereby the foot and. seat sections maybe locked together sofas to extend in a single plane or the foot section may be permitted to swing pivotally aboutthe end of the seat section. and depend below the normal plane oi the bed bottom.

The invention is illustrated in the accompanying drawings, in Which- Figure 1 is a side elevation of a bed embodying my improvements and showing the several sections of the bed bottom arranged. in a horizontal plane to permit the use of the bed for sleeping;

Fig. 2 is a similar view showing the several sections adjusted to permit the occupant to assume a somewhat reclined position with the knees bent and raised; V

Fig. 8 is a transverse section on the line 3-? of Fig.1;

lflig. l is an enlarged detail view of the raising and lowering means; 7

Fig. 5 is a similar view of one member of the housing;

Fig. 6 is a transverse section of said mecha nism;

6 Fig. 7 is a detail perspective view of a portion er one of the side bars of the bedstead frame.

In carrying out my invention, I employa bedstead comprisinga head section 1, a foot section 2 and side bars 3 connected and secured to said head and-foot sections in any well-known manner. The side bars 3 are preferably constructed of angle-iron, as shown most clearly in Fig. 7, and near their rear or "foot ends the inwardly projecting webs of the side bars are cut away, as shown at 4. The gap thus produced in the side bars Specification of Letters Patent.

isle. Serial no. 304,320.

is normally filled by the horizontalinwardlyf Patented Jung. 15,1920.

projecting: web 5 ofa track member which,

18 pivoted at 6 to the sidebar and consists of the said-horizontal web 5 and a vertical web? fitting up against the outer face of the side bar. A wing screw or similar securing device 8 is carried by thetorward free end oi? the said track member and is adapted to directly engage the horizontal web of the side bar at the forward end of the gapi so. as secure the track member normallyiin raised'position.

The bed bottom comprises a head section9,

a section 10 and a foot sectionll,the

sections 9 and 10 being pivotallyjoined, as

indicated'at l2, and the sections, 10 and'll being similarly pivotally joined, as shown at lS, the pivot members in both instances being connected by an inverted transverse arched member 14 whereby the side members of the several sections will be properly braced. The sectionsQ, 10 and 11 each 0011- sists of side angle bars 15 and a woven spring fabric 16 secured to and stretchedbetween the said side bars. section 11 is free and is equipped with rollers (not shown) adapted to run upon the horizontal webs of the side bars and the track members 5 so that if the said track members be in their normal. position, as shown in the drawings, and the seat section 10 be swung upwardly, as indicated in Fig. 2, about its pivotal connection with the head section 9, the foot section will assume an angular position relative to the seat section and its free foot extremity. will be supported by the side bars 3. If it be desired to permit the occupant of the bed to sit up or it is desired to permit the occupants feet to assume a more pendent position the'holding device 8 is released whereupon the track member will swing downwardly, as indicated by dotted lines in F ig. 2, and the 'foot section 11 may then depend through the cut-away portions 4; ofthe side bars. It is to be noted that the 100 tudinally of the bedstead frame cannot occur 105 The foot end of the foot although they may be adjusted pivotally, as

indicated in Fig. 2. s

It is sometimes desirableto permit a patient to raise his feet without bending the knee, and, in this event, a latch 17,- pivotally 11o mounted upon the foot section is engaged head and seat sections and each comprising a over a studlS on the seat section so that said sections will be locked in alinement.

To raise or, lower the sections and adjust the bed to the comfort of the patient orthe' convenience of attendants, I provide operat- 1ng-;mechan1sm arrangedto act upon the rack 19 pivoted at its upper end to the respective section and:dependingfreely therefroinlthrough a casing 20 consisting-of mat- V prises aside web and edge flanges 26 on their inner faceswhich areadapted to abut, as shown in Flg. 6. The casing members are substantlally trlangularin form, one side of 7 the-triangl'e-being arcuate so asto accommodateithe parts while economizing in material,'andthe flanges on the straight sides of "the triangle. or-edges of the casing are cut away toprovide slots 27 through which the respective rack bars 19 may play. Onefof the casing members isprovided atits upper 1 straight edge. on its outer side with lateral lugs or flanges28'which are adapted to fit against the under side ofthe sidebar of the 'bedstea d frame and receive fastening bolts or screws whereby the casingwill be firmly secured in position. Each of the casing membersis provided with an 'opening29 throughiwhich a shaft 30 may extend and upon-the inner side of one casing member is a boss orprojection 31 which constitutes a hub bearing for the said shaft. The shaft 80 extends entirely across the bed and has angular ends, asshown at32, whereby it may be engaged by an operating crank or other form of turning tool A pinion 3 1- is secured upon the shaft 30 between the casing members 2]. and 22 and is held in the central vertical plane of the casing by the boss or projection 31 and a coaoting boss or projection.i85,asclearly shown in Fig. 6. This pinion meshes directly with the rack bar'19, as shown' clearly in Fig. 4, and rotation of thepinion will effectmovement of the rack bar as'will be readily understood. The rack bar being pivoted at one end to the side of the-sectionwhich is to-be adjusted, it will assume. different angular positions within the-casing and this niovement of the rack bar is accommodatedby the slots 27 a'roller 36 being carried by a pin or stud 37 in themeper angleor point of the casing to bear upon the straight smooth edge of the rack bar and thereby hold it in engagement with the pinion-'34 in all of: its various angular positions. To lock the section in. a set position, I'employ a dog 38 which is pivotally mounted within the'casing and is equipped with a tooth 39 adapted toengage between two adj acent teeth of the pinion 84:. The pivot 40 of this dog is threaded into the same or otherwise secured thereto and extends transversely through one casing member, while its extremity is journaled in a socket inthe other casing member, as indicated at 41. The outer'portion of the pivot or pin 40 is bent to provide a crank or, handle 4-2 whereby the pin may be rocked and the dog consequently thrown into or out of engagement with thepinion. A leaf spring 48 is secured at one endwithin the casing and its free end engages a notch 44 in the dog, the relative positions ofthe severalparts and the shape of the spring being such thatthe spring will be under tension whether the dog be in or out of engagement with the pinion and will tend to hold the dog in the position in which it has been set. Upon referehceto'Fig. 5, it will be noted that the boss or projection 31 hastwo plane faces 45 topermit the rack bar 19 to clear the boss in the 7 event that it shouldmove laterally whenlconforming to the adjustment of the'parts.

Itisthought the operation of the device will be readilyiunderstood from what has been said taken in connection with the accompanying drawings, but itmay benoted that when it is desired to raisea section of the bed bottom as, for instance, the head section 9, the handle member t2is swung in the proper direction to release the dog 38 from its engagement with;the-pinion 34, after which the shaft'30 is rotated so that the pinion 34=will act upon the rack 19 to move the same upwardlyfand thereby raise the head section. When the section has been raised to the desired position, the. dog is thrown into engagement with the pinion and will effectually E; prevent retrograde movement of the rack'bar and the section to which it is attached. It will be readily seen that my improved mechanism is exceedingly simple, compact and inexpensive. It-will operate directly upon the section to be adjusted and does not require laborious strain in order to operate effectively andbydts use the section which maybe raised will be firmly suported in the raised positionwithout the use of complicated, cumbersome, and expensive interlocking devices which ordinarily interfere with the free movement lof nurses or other attendants in the vicinity of the bed. f f

Having thus described; the invention,

side bars, a seat section pivotally attached to the frame, and a foot section pivot'ally connected with thelseat sectionand having one end free and jarranged to}: ride upon the side bars of the frame and the said track members. r

2. In an adjustable bed, the combination of a frame, a bedbottom section pivotally connected with the frame, a casing secured to and depending from the frame, said casing consisting of mating members secured together having two% straight converging edges and having axially alined central openings and provided with elongated registering notches in their top edges and in the straight edges convergingfto thei, top edges, a shaft rotatably 'mounted in the central openings of said members, a pinion on said shaft within the casing, a rack bar pivoted to? the bed bottom section and depending therefrom through the notcheslin the casing members andmeshing with said piniont a roller mounted in the angle formed by the converging edges of the casing in fixed relatlon to the casing and the pinion and bearing upon the rack bar in all angular posithe dog with its free end engaging the dog whereby to hold it either in or out of engagement with the pinion and means extending exteriorly of the casing for moving the dog into or out of engagement with the pinion.

In testimony whereof I affix my signature.

JOHN R. STARK. [1 s.]

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