US2146970A - Bed - Google Patents

Description

Feb. 14, 1939. Rfp MCGREW BED Filed March 9, 1937 5 Sheets-Sheet l ATTORNEY Feb. 14, 193Y9. R McRL-:w

BED

Filed March 9, 1937 5 Sheets-Sheet 2 ATTORNEY R. P. MCGREW Feb. 14, 1939.

BED

5 Sheets-Sheet 3 ATTORNEY Feb. 14, 1939. R, P, MCGREW v2,146,970

BED

' Filed March 9, 1937 5 Sheets-Sheet 4 .57 62 60 d4 INVENTo 6a 63 65 69 75 y 59 BoezP/@QW ATTORNEY Patented Feb. 14, 1939 @UNIT-ED STATES o Fieles Claims.

This invention relates to -bedsandfmoe'partieularly` to aneadjustable hospital bed.

, r The general object of the invention is toprovidea-bed whihmaybe so adjustedthat'the 5 back and head of'an occupant of the bed naybe inclined Aupwardly -from the normarhoria'oital position, Vandqtheflegs of the oocupantmay be lowered-from the horizontalposition 6r raisedu at `-an-angle from the-horizontal po st ion V andfwhen so-raised, the legs Arr1 a y,from the-kneesdown, be 1owered into a horizontal position.

Anothenobject is to-provide a bed 'of theV character stated which may be op erated slowly4 and vsmoothlyfso as jtoavoid any diseomifortto the ocoupantof the bed, while the bed isbeing adjusted.; .L Y

,Aefurbhereobiectie merg/1de@ bed-Which may be adjusted to raise the bagl and head', andl lower thelegs ofj anoccupantpf the bed, l'and which is constructed so that-tire foot memloenof the bed may be swung ont groin one side ofthefnbed to open the foot end` of the bed, vwhen ,the bed Vis adjusted, as described, order that the oooupant maystepout of the bed through said 'open fQot end therffofe e e Other objects and advantages of thevinvention willappear'v as A thespecification proceeds.

W' h Ythe aboveandfother objects-fin yiewfthe invention consists in the novel and useful.V provision, formation, construction', association', dand relative arrangement of -partsQ members and features,a 1ljas shown in a certain empodiriritfin the accompanying drawings, desveriloezlwv generally, aridv moreparticularly pointed out' the claims.

Figure '1"S afp@ t v spring shown adjusted for raising the' headA and back of anoccnpantof'the bed at `an`angle`and fthe bed springin full lines; adjust'd as `in`Figure 1, Iand showing the adjustable sectinsof the spring 'in-their normalhorizontalpsitions in e`r p Q t5 dvxfted Hees,

showing the leg-supporting section 4ofthe'loed spring elevated above,A its nl )rrnal"fhoriztali -potal, and the lower -legfsupp'rtng'nener"of said section eiterdinglhori'zontally Tronisad' upper bedateneonline-@Lafer Fisez,

metres 11e e'-eresseeeneeer-view'erene'erthe 4 2,."W for lowering the legs of the occupant 'at 'an angle, A

Figure 3-is a fragmentary longitudinal nvertical Thesidenlembers 4 there mj-f'ofeheener here with `s"`fagng'inward1y. "A transar Scoricts' the' sidev members 4 Haeconneted tothe head tra verse* channel bar 'I i4 near `their ends b awspnngs i'isror'mea wahrer-interpporting's'ect'on 28, `Tor-supporting the f the occupant of the -andiback' supporting 45 fof fofsupporting theklegs legfsup a portion of the coil springs I2 and connections of the bed spring pro-per, which coil ysprings are connected to the side arms I5 and connecting member I6, of said frame, through holes I1 and i8 in flanges I9 and 29 extending inwardly from the upper edges of-said side arms and connecting member, respectively. The head-and-back supporting section 9 is hinged to one end of the intermediate supporting section 8 of the bed spring 5 by hinges 2I connecting the adjoining ends oi the anges II and I9 of said supporting sections.

The leg-supporting section I of the bed spring 5 comprises an upper leg-supporting member 22 and a lower leg-supporting member 23. The upper leg-supporting member 22 comprises a pair `'of links 24, formed with inturned flanges 25 along their upper edges, and a portion 'of the coil springs I2 and connectionsk of the bed spring proper, which coil springs are connected to' said links 24 through holes 26 in said link flanges 25. The lower leg-supporting member 23 comprises a U- shaped frame 21 and a portion of the coil springs `I2 and connections of thev bed spring proper,

.mediate supporting section, and the anges 25 of the links 24 of said'upper leg-supporting member 22. The lower leg-supporting'member 23 of` the leg-supporting Asection I8 is'hinged to the upper leg-supporting member 22 by hinges 35 connecting the adjoining ends of the flanges 25 of the links 24 of said upper leg-supporting member, and the anges 32 of the side armsY 28 of said lower leg-supporting member 23. Thelowerleg-supporting member 23 of the bed spring is held parallel or at an angleto the upper legsupporting member 22 by means of a pair of dogs 36, pivoted at one'end at 31'to the side arms l28, respectively, of the frame 21 and screw pins 38 extending inwardly from the 'links 24, respectively, of the upper leg-supporting member 22,

which dogs are each provided at their' other ends with a pair of notches 39 and 4 9 in their lower edges for respectively engaging said pins 38 on said links 24. Springs 4I are `coiled around the dog pivots 31, respectivelywith one end of said springs secured to the anges 32 of the side arms 23` of frame 21, respectively, and the other ends of said springs engaging the upper edges of said dogs, respectively, whereby said dogs are swung down so that the pins 38 on the links 24 will engage either the notch 39 or the notch 40 in said dogs, respectively, for holding the lower legsupporting member 23 in straight alignment with the upper leg-supporting member 22, as shown'in Figure 2 of the drawings, or for holding saidY lower leg-supporting member at an angle to said upper leg-supporting member and in a horizontal position, as shown in Figure 3 of the drawings. Lever larms V42 are pivoted, respectively, to the l side arms 28 of the frame 21, and links 43 conneetl said lever arms to the dogs 36, respectively,

whereby upon swinging said lever arms in one direction, said dogs are swung upwardly on their pivots to disengage 'either the notches 39 or 48 of said dogs from the pins 38,so that the lower leg member 23 may be swung on its hingesr 35 with relation to the upper leg-supporting member 22. A foot rest 44 is hinged by hinges 45 to the under side of the flange 33 of the connecting member 29 of frame 21, there being lugs 46 formed on the lower edge of said foot rest connecting the foot rest to said hinges, which lugs extend through slots 41 in said flange 33 and the l frame connecting member 29, and. engage the lower ends of said slots to hold said foot rest in its raised and operative position, extending upwardly at right angles from the frame connecting member 29 for supporting the feet of the patient in the bed and also for engaging the foot end of the mattress, which is placed upon the bed spring 5 to prevent the mattress from sliding oi the foot end of the bed spring when the legsupporting section I of the bed spring is lowered and the head-and-back section 9 4 of the bed spring is raised as shown in Figure 2 of the drawings.

The pins 38 on the links 24 of the upper legsupporting member 22, are connected to the upper ends of a pair of links 41, the lower ends of which links are connected to a pair of crank arms 48, which are secured on a crank shaft 49 extending transversely of the bed I and journaled at its ends in the side members 4, respectively, of the bed. Said rock shaft 49 carries a worm wheel 50within one of the side members 4 of the bed, which worm wheel is in mesh with a worm I secured on one end of a transmission shaft 52, journaled in bearings 53 and 54 mounted upon and within said side member 4. On the other end of said transmission shaft 52 is secured a bevel pinion 55 in mesh with a bevel pinion 56 on one end of a second transmission shaft 51 journaled in a bearing 58 mounted on the inside of the transverse channel bar 1. A drive shaft 59 is journaled in a bearing 60 on the inner side of the transverse bar 1 and one end of said drive shaft may be clutched to the other end of the transmission shaft 51 by a clutch 6I comprising a pair of clutch members 62 and 63. The clutch member 62 is secured on said end of said drive shaft 59, while the clutch member 63 is slidably keyed on the adjoining end of the transmission shaft 51 by means of a key 64 secured at its ends in said clutch member and extending through a longitudinal slot 65 in said transmission shaft. In the outer end of the clutch member 62 is formed -a bearing 66 in which is journaled the adjoining end of the transmission shaft 51. 'Ihe clutch member 63 is provided with an annular groove 61 engaged by a Vfork 68 upstanding from one end of a clutch-operating bar 69 slidably mounted on the lower flange 1U of the transverse bar 1, whereby said clutch member 63 is shifted into or out of engagement with the clutch member 62 for clutching the transmission shaft 51 to, or unclutching said transmission shaft from, the drive shaft 59. In said flange 18 is provided a longitudinal slot 1I through which extends a stud 12, the upper end 13 of which is screw-seated in the clutch-operating bar 69, while its lower end is formed with a knurled hand grip 14 to be grasped by ones hand for shifting said clutch-operating bar 69. On the drive shaft 59 is secured a worm wheel in mesh with a worm 16 secured on a crank shaft 11 extending through the transverse l bar 1 and journaled in said bar and, at its inner end, in a bracket 18 secured to the upper ange 19 of said transverse bar by a screw 80. A third transmission shaft 8I is journaled in a bearing 82 mounted on the inside of the transverse bar 1, which shaft may be clutched at its inner end of the. clutch member 8.4 isv 1in which. is journaled kthefaolJ -transmission. .shait;.81. In the enter fend pornon ofthe clutch. mentent-5.15. prorideiienniinular groove A88. engaged. bil a OTJS, ,gpsinding from the.oth.er,. end of thegplutchoperating bar 6.9. 'On .theV ouienend.. .of the' transmission shaft 8l is secured abeveipiileli!! 1.1.1-, HeShWh .a bevel pinion. 9 l. secured. on ,opened .9i fourth transmission 'shaft ..92 .JQlJUMi-d irl-Sloggi ..93 mounted on the inside of the other side member 4 0f .the bed. l... On the otherLenilsfsaid'irarsmission. shaft 92 issenreda norm. .94,111 mesh .with a Worm wheel, szseciiredn .a Crankshaft seextending transversely@.ihehbed .l .and 10.1.11- naled ,atitsjendsjintne Vside members 4, respectively, of the leed.. ..011 saidsrank .shaii 9511s Secured a pair @f erank arms91,..whi9h are conheated at their outerensisio the. lower ends Oia pairv of links 98, ,res pectivel y,the upper ends of which links are connected to theside arms |5 respectively of theframegMwof thehead-andback supportingV section!!A o f the bed spring A crank |l is detachably flttedontheputer 'end ofthe `crank .shaft 11, and4 extends Voutside of the foot member3 of thebedl forrotatingsaid crank shaft and the worm 1li` fion operating the mechanism for adjusting the. head-and-back supporting section 9 and v'the -leg-,supportingsection It] of the bed spring'5.

The operation, uses,iandadvantages`of the invention are as follows:

My bed may be used as.. a conventional bed when the head-and-back i supporting section 9 and the leg-supporting section .lll` ofthe bed spri'ng'5 are in` their horizontal positions in alignment with the'horizontal intermediate supporting section 8, las illustratedin dotted lines in Figure`2 of the drawings.V

When it is desired Ato raise thephead and back of the occupant of my bedfan attendant grasps the hand grip 14 and shifts thev clutch-operating slide bar 59 to the left (Figure 5), whichthrough its forks4 68 and J89, shifts'v the :clutch member 63 out of engagement with the fclutch'member 62 andunclutches the Vtransmissionrshait 51 from the drive shaft 59,- and shifts' the clutchimember "as inte, engagement with the clutch member "sa andclutches thet'ransmission 'shaft 8| to said Vdrive shaft 59. "I hecrank |09 vis then .grasped and rotgitedfley theattendant, which rotates the 'worm 16. The rotation of Asaid worm rotates the worm wheel 15 andthe' drive shaftV 5 9, and said drive shaft in turn rotates the transmission'shaft sl, eiuteheditherefe by eiuteh' sa, andthe bevel pinion 0. Thefrotationff said bevel pinion rotatesthe hieveifpiniehfsl, trahehiissieh shaft 92 Vporting section maybe heldby the engagement `of the worm wheel 95 withfthe worm 94.

When itis desired to lower'theleg-supporting rsection`|ll of the'bedspringthe clutch member 85 is shifted outof engagement with the clutch member 84, unolutching the transmission shaft 8| from the drive shaft 59, and. the clutch member 63is shifted into -engagement with the clutch member 62 byme'ans of thefclutch-operating bar 69, clutching. the ,.transn 1is` s`ion vshaft 51 to the drive shaft 59.. The crank |09. is'then rotated, which rotates theworm 16 andfsaidworm rotates the worm wheel-.'15,drive'shaft'59 andthe transmission shaft 51, ,clutched to the drive shaft, and the bevel pinion56. Said 'bevel'pinion in turn rotates bevel .pinion 55, transmission shaft 52 and worm '5|, which worm rotates the worm wheel 50,"crankshaft 49 and Acrar1k 's`48,' land said cranks, through the medium of thelinks 41,

swing the leg-supportings'ection l0 of the 'bed spring down on its hinges'34, 'at'an 'angle tothe horizontal intermediate 'supporting section f8, as shown in full` lines in'FigurefZ of the drawings.

When it isdesiredto raise' the leg-supporting section lil of the bed spring'5, the transmission shaft 8| being unclutched from the drive'shaft 59, and the transmission'shaft 51`beirig clutched to the drive shaft by c1utch 6|, as above described, the crank |00 is rotated in the opposite,

direction, whereupon the leg-'supporting,Y section 9, through the medium of `the crank Shaft'11, worm 16, worm wheel 15, drive shaft59, clutch Y6 transmission shaft^5 1-, bevelV pinions 55 andE,

is `swung upwardly onfits hinges Y34 at an angle Ashown inFigureiuponswingingthe lever arms 42 and, through links 4 3, swinging the dogs '36 upwardlyV to disengage fthe do g notches 39 V'from the pins 38, and when said lower leg-supporting member isswung into such angular position with relation toltheuppe.' lgtsupirting member, it

may be so heldbyallqwing dogs35 to swing io-wus@ that the pinsieiigase-ihe @seventies 40. The'leg-supporting section vlil is held in any position jto whichr it is swung by the. engagement of the worm wheel `50 with the worm 5|.

When the head-and-bak supporting section 9 is swung up and the leg-supporting-'seetion l0 is swung down, as shownin Figure 2, my bed is converted into the form *of an invalids chair, thus enabling the occupant-ofthe bed to sit'up vWithout getting out of the bed'andsitting vin a chair.

The operating mechanism o-f my bed, including the worms and worm whee`1s, causes the head-and-backsupporting section and the, leggal :supportingl section to bes up or 'down smoothly and slowly, so asJtolav'oid `any' discomfortto the occupant of thelbed. y

In the modification of my bed shown :in Figures l 9 to 1 2, inclusive of the dra'wiiigs, the tran'sverse ,channelbar 1 is eliminated andthe parts '51 to 89, inclusive, of the operating mechanism'are mounted on the inside of one of the side members yL as shown in Figures 9 and 10, while the foot member ||l| of the bed is hinged at one of its side edges by a hinge |02 to the foot end Vures 9 and '10.

of said side member 4, and securing means |03 is provided for securing said foot member at its opposite side edge to a leg |04, which is secured at its upper portion to the foot end of the other side member 4 of the bed for supporting said end of said other side member, as shown in Figures 9 and 11.

Worms |05 and |00 are secured on the ends of the shafts 51 and 8|, respectively, of said parts of the operating mechanism mounted on said side member 4, which worms mesh with the worm pinions 95 and 50, respectively, as shown in Fig- The crank shaft 11 extends through an opening .|01 in the side of said side member 4 to receive the crank |00.

'I'he securingmeans |03 comprises a thumb screw |08 formed with a cylindrical portion |09, a screw shank ||0 extending from one end of said cylindrical portion, and a thumb piece formed on the other end of said cylindrical portion |09. The cylindrical portion |09 of said thumb screw is turnably iitted in an opening ||2 edge, for securing said edge of said foot member `to the leg |04 and holding said foot member in position extending across the foot end of the bed. Dowel pins I| 4 and ||5 project from the leg |04 below and above the opening H2, re-

spectively, in said leg for projecting into openings ||6 and ||1 in the foot member |0| near the unhinged edge of said foot member for firmly holding said edge of said foot member to the leg |04 when said foot member is swung across the foot end of the bed.

When the clutch 83 is brought into operation in the manner hereinbefore described, rotation of the crank shaft 11 by the crank |00, rotates the Worm |06 through the medium of the worm 16, wo-rm wheel 15, transmission shaft 50, clutch 83 and transmission shaft 8|, and said worm |06 rotates the worm wheel 50 and rock shaft 49 which, in turn, through links 48 and 41 swings the leg-supporting section I0 up or down onits pivots 34.

When theclutch 6| is brought into operation, rotation of the crank shaft 11, by the crank |00, rotates the worm |05 through the medium of the worm 16, worm Wheel 15, transmission shaft 59, clutch 6|, and transmission shaft 51, and said worm |05 rotates the worm 95 and rock shaft 96, which in turn through links 91 and 98 swings the head-and-back section 9 up orV down on its pivots 2|.

When the leg section |0 is swung down, the thumb screw |08 may be unscrewed from the threaded opening I3 in the foot member |0| and said member swung outwardly on its hinge |02 to open the foot end of the bed, as shown in Figure 11, so that the occupant of the bed may step out of the bed through said open foot end.

I claim:

1. A bed including a head member, a pair of side members secured at one end to said head member, a foot member hinged to the other end of one of said side'members to be swung across the foot end of the bed or swung outwardly from the foot end of the bed to open said end of the bed, means for securing said foot member in position swung across the foot end of the bed, a bed spring supported by said side members and formed with a horizontal section, an adjustable leg section and an adjustable back section, and means for swinging said leg section downwardly and said back section upwardly from the horizontal position of the bed spring.

2. A bed including a head member, a pair of side members secured at one end to said head member, a foot member for normally supporting the other end of said side members, means whereby said foot member may be withdrawn from the foot end of the bed to provide an unobstructed opening at the foot end of the bed, a bed spring formed with an adjustable leg section and an adjustable back section, and means for lowering said leg section and raising said back section fromA the horizontal position of the bed spring.

3. A bed including a head member, a pair of side members secured at one end to said head member, a foot member for supporting the other end of said side members, means whereby said foot member may be normally extended across the foot'end of the bed or moved from its normal position to provide an unobstructed opening at the foot end of the bed, means intermediate the head member and foot member for holding the foot ends of said side members in properly spaced relation when said foot member is moved from across the foot end of the bed, a bed spring formed with adjustable leg and back sections and means for lowering said leg section and raising said back section from the horizontal position u the foot end of the bed or swung outwardly from the foot end of the bed to open said end of the bed, a leg for supporting the other end of the other side member, against which leg ts the adjacent side of said foot member when swung across the foot end of the bed, means for releasably securing said adjacent side of said foot member to said leg, a bed spring fo-rmed with adjustable leg and back sections and means for lowering said leg section and raising said back section from the horizontal position of said bed spring.

5. A bed including a head member, a pair of side members secured lat one end to said head member, a foot member hinged tothe other end of one of said side members to be swung across the foot end of the bed or swung outwardly from the foot end of the bed to open sai-d end of the bed, a leg for supporting the other end of the other side member, against which leg ts the adjacent side of said foot member when swung across the foot end of the bed, registering means carried by said leg for cooperation with the adjacent side of said foot member when swung across the foot end of the bed, means for securing said adjacent side of said foot member to said leg, a bed spring formed with adjustable leg and back sections 'and means for lowering said leg section and raising s aid back section from the horizontal position of said bed spring.

ROBERT P. MCGREW.

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