Патент USA US2407085код для вставки
Sept 3, 1946- * G. B. LEATHER ET AL I FOLDABLE STRÉTCHER Filed MaI‘Gh~27, 1944 _2,407,085 2 Shee‘lfS--Sheei'I l .knew/Pl”, 'Q n SePt- 3, 1946» G. B. LEATHER Er'AL FOLDABLE STRETCHER Filed March 27, 1944 ì - > 2,407,085 I l „23, Z'Sheets-Sheet 2 ‘ #D g QM. J Patented Sept. 3, 1946 2,407,085 UNITED STATES "PATENT OFFICE Wallbanks, Feltham, England, assignors to General Aircraft Limited, Feltham, Middlesex, England Application March 27, 1944, serial No. 528,294 In Great Britain September 7, 1942> Y 1 ' _ 2 ‘ r The present invention relates to foldable stretchers and stretcher frames. It is an object of the invention to provide a'v ioldable stretcher in a convenient, practicable, simple and strong form, which can be eiiectively reduced in overall length and wdith without in any way impairing the strength and rigidity and general effectiveness as a stretcher. Í `Figure 6 "is a detailed end elevation of a leg support, the nature, function and operation of which will be `understood from the ensuing de scription; while Figure 7 ¿is a fragmentary side elevation to a" ` greatly reduced scale in proportion to the remain ing figures showing _how either end of the stretch-V „ A particu lar object of the invention is the provision of _ an arrangement which enables a full-size stretch er to be folded in such form that it can conven er can be folded up to provide a back rest so that a patient can use the stretcher in a sitting up position. ` Referring more particularly to Figure 1, the iently be stowed into a comparatively smally con improved stretcher includes a main section com--V prising side rails I I with canvas support I0 con erably suspended by a parachute, from an air nected thereto. A handle section is connected 15 at each end of the main section and includes han The present invention consists in a foldable dle bars I3 also connected by canvas and con stretcher frame comprising side rails to carry nected to the side rails I I by pivots I2. The piv- , the stretcher canvas, each side rail having at ots I2 are transverse the stretcher, one for each each end a handle pivotable on a transverse axis. p handle bar and engage the ends of the handle A sectional transverse stay foldable about a pivot 20 bars with the side rails II, near the ends of the intermediate its endsis terminally connected at latter so as to leave deiinite lengths I I’ of the each end to the handles between the free ends of side rails beyond the pivots toward the handle the handles and the pivots connecting the handles sections. The handle sections each include a and side rails. The handlesare foldable through ioldable stay I4 bridging the bars I3 and con substantially 180° substantially into the horizon 254 nected to the bars I3 by tubular pivots I6 extend- ` tal plane of the side rails without projecting be- , ing at right angles to the plane of the stretcher tainer adapted and arranged to »be dropped, pref craft. . . yond them lengthwise, whereas the transverse stays are foldable to permit approach of the side ' rails for reduction of overall width of the frame. The stretcher canvas can be secured in position 30. in any convenient manner and it is preferred that ` and passing through the bars I3 at points out wardly of the pivots I2 somewhat less than the lengths II’ of the side rails. The stay is made `of two separate lengths pivotally connected, as the transverse stays shall be adapted and ar ranged to engage under projecting ends of the side rails to provide support thereat intermedi ate the outer end of each handle and its trans 35 at I5', at an intermediate length of the stay by a member I5 of an angular cross section (L-shape for example) welded or otherwise secured adja cent one end portion to one of the stay members I4 with its vopposite end portion arranged and ` verse pivot. adapted to overlap the adjacent portion o_f the l In order that it may .be clearly understood other stay member, the freely projected right an and readily carried into elîect, the invention is gular flange of the member I5 limiting the play hereinafter described with reference to the ac of the stay parts in one direction, substantially companying diagrammatic drawings, of which: 40 with the 'same eiiect as in a conventional rule Figure 1 is a plan view of a stretcher according to the invention shown fully extended both lat n As shown, the pivotally connected ends of the erally and lengthwise ready for carrying a pa stay parts arev secured to the tubular pivots I6 joint. tient; @all Figure 2 is a fragmentary plan View showing one end of the stretcher seen in Figure 1 in the process of being laterally reduced in width; Figure 3 is an inverted view correspondingto ‘ ‘ , ‘ on the'underside of the handle bars, and when 45. the stay members are in extended relation they each underlie the extended lengths I Il of the side rails near the ends thereof. Thus, when the han dle sections are extended the ends of the side rails II bear on the stay parts t'o aid in support tion of minimum width with the handles also fold 50. >ing the weight of the patient on the main length ed over inwardly to reduce the overall length; of the stretcher, and more securely support the Figure 4 is a section on the line IV-`-IV of side rails. It is to be further noted that when Figure 2, but showing the side rails in the posi Figure 3 ; ' Figure 5 is an end view looking on the left--` hand end of Figure 3; . ’ the stays are broken at their intermediate piv ots I5’_ and moved toward the ends of the stretch 55.’. ¿erMthe respective side rails I I and also the`re-¿ 2,407,085 3 4 spective handle bars I3 of each handle section are moved toward each other and tend to collapse security for holding the stretcher in the folded form. or fold the stretcher and in this movement the Figure 5 merely adds to the description over and above that already dealt with, the feature of providing small supporting feet or legs indi stay ends ride from beneath the free ends of the lengths II’ of the side rails, freeing the handle sections for freer folding over and onto the main section and having yet another and important function to be later referred to. The canvas I0 is attached to the side rails II in any convenient manner, for example by stitching or eyeletingand, in preferred constructions, the canvas ex tends beyond the ends of the side rails II for attachment to the handles I3. Where the can cated in Figure 5 by the reference numeral 2U. The feet or legs 29 are also seen in Figure 3 and are provided at the four corners of the folded frame. In Figure 6 there is indicated a convenient form of leg support which may be provided for use in cases where a leg injury requires that the leg beA supported with the foot space well above the foot end of the stretcher. Accordingly, the vas is so extended it is preferably slotted or cut away, as indicated at Il, in order to avoid any 15 cross-bar 2l has pivotally connected at each end, the lateral sup'port members 22 at the foot of possibility of the canvas being caught up in the each of which the prong 23 is provided. For pivots or between the handles I3 and side rails mounting the leg support it is convenient to en Il in the folding operation. To strengthen the gage the prongs 23 in the tubular pivots I6, which stretcher longitudinally, straps I8 and I9 are pro vided and it will be noted that the strap I8 is 20 pivots I6 pivotally connect the ends of the trans verse stays I4 to their cooperating handles I3. It somewhat longer than the strap I El. Thatasyrn will be noted from Figure‘ô that the natural width metry in- regard to the length of the strap is de between the‘centres of the prongs> 23, with the liberately devised for a purpose which will later prongs> parallel readyv for insertion into the tu be understood in the description with reference to Figure 4‘ of the accompanying drawings. 25 Fîbular membersV It,l is slightly greater than the overall~width-between the centres of the pivots, When it is desired to reduce the overall width as indicated by the chain line position' of the and length of the stretcher, the ñrst operation handle and side rails inthe fully extended condi is to eiîect the folding of the transverse stay I4` tion. Such an Larrangement involves .the neces about its intermediate pivot I5. The stretcher bearer or other attendant, therefore engages the 30 1sity for engaging ther prongs 23 into the tubular members`4 I (iYY with the /leg ?supports each'l moved stay HI` in the vicinity of the pivot I5 and-pulls from its naturaliposition,A the arrangement being it outwardly from one end of the stretcher and such that when mounted the Ylateral supports 22 the lateral collapsing operation to reduce the of the leg support must take up the position in overall width of the stretcher frame then pro ` dicated in chain lines in Figure 6. . ceeds automatically, as clearly seen with refer In order to'adapt thel stretcher for use by'sit ence to Figure 2. It will be appreciated that,` ting-up cases, the handles I3' at the‘head’end whereas Figure 2 is fragmentary and therefore can be lockedin the upwardlyl extendingv condi illustrates only one end, the same thing is hap tion to provide a backrest. Toenablethat to be . pening at the other end, although the respective done, let it lee-assumed that the stretcher isv al end foldings need not necessarily be performed ready 'in the vextended condition shown in Figure simultaneously. 1. If then it- is required to put the head end vas Having so effectively reduced the overall width an inclined back rest, as shown in Figure 7, thel of the stretcher frame that the side rails II lie lateral Width of the-»stretcher vframe isfreduced substantially contiguous with only the thickness to 'a condition which'is just slightly narrowerthan of the stretcher canvas I0 between them, the next that shown in Figure‘Z. In such a position, the operation is to reduce effectively the overall folded- transverse stay- I4' clears the ends II' ofV length which is done by folding over the han the side rails II just suflicientlyY to'enable> theY dles I3> at each end until they lie alongside and handles --I3 vto=b`elfolded up. One back-support orv in the plane of the side rails I I. A point which is made clear in Figureßl is the’ 50 handlesectiOnisthenrased to an inclined posi tion on thepivotsIZ», and> in- this movement-of manner in which the stretcher canvas II! is passed’ the handle sectionthe stays adjacent the pivots through between the side rails II so that the IIìA are moved into'a plane above the .ends of the main part of the sheet lies on the underside of sectionsÀI I’ of theside rails II of the ymain sec the side rails in the fully folded condition. There is also indica-ted in Figurle 4 the position which 55 tion. The-stays I4- are then moved into~spread or operative position to spread the stretchèrand the straps I8 and I9 can be caused to take. The the'inclined handle'section permitted 'to swing strap I8, as was particularly noted in the de on the pivots- I2 until the stay'ends rest-uponv scription with reference to Figure l, is the longer strap and if that part of the strap I8 which the upper surfacesof the endsIIf of' the `adja is shown in Figure l in dotted lines be pulled 60 cent’side rails’of'the/-main section. This» holds the inclined handle section atI adeñnite linclina out in the folded condition of the stretcher, the tionto the main sectionfor service-as-aback slack, due to the fold over of the end portion of rest. In‘that position the end of thev feet 20 at the stretcher canvas, is taken up so that the` the head end line up with the inner end of the» strap Virtually takes a bowed formation extend 65 handle, as indicated at ISA, to'support oneend ing between the slots through which it passes of the stretcher above the ground‘line indicated in the canvas. The samething can be done in by the letter G. regard to the strap I'9, but being of lesser length To provide the- ideal of lightness, the side rails the bowed formation produced by the'strap I9 II, the handles I3, the transverse stays I4, the is not so large. Nevertheless, if the` strap I8 be 70 feet 20 and the leg support where such is provided, wrapped round the folded stretcher and engaged are preferably formed of light alloy box section> through the loop I9, as shown in chain lines, the hollow members, but it is in fact quite practica straps can vbe used to provide'not only a con ble for the purposes for Which the foldable Venient carrying handle with the stretcher in theV stretcher is provided to form those'members from foldedform, but also to provide'somefrneasure of 75 ` hollow box section steel. The' canvas vII) may beY 2,407,085 6 5 stay bars when aligned to space the side rails and detachable. The straps I8 and I9, which are largely optional, can be attached to the canvas by handle bars and when moved on their interme stitching or in any convenient manner and, al diate pivots to move the respective side rails and though preferably adapted and arranged to pass the respective handle bars toward each other, the through slots to leave a substantial portion both Ui ends of the stay bars when aligned underlying and contacting with the adjacent ends of the side above and below the canvas, there is no reason rails to support the main section when the main why the straps should not be provided wholly section and handle section are in substantially above or wholly below the canvas. The feet like horizontal stretcher-forming alignment. wise are largely optional. 5. A stretcher including a main section includ What we claim is: ing spaced side rails and a handle section includ 1. A foldable stretcher frame, including side ing spaced handle bars, a canvas connected to rails, a handle pivotally connected to each end the side rails and to the handle bars, the handle of each side rail on a horizontal pivot for swing bars being swingingly connected to the side rails, and stays pivotally connected at their ends to the ing to operative positionsbeyond the ends of the side rails or to inoperative positions within the lengths of said side rails, a canvas section se cured to said side rails and to said handles, a transverse stay at each end of the lateral side rails and each comprising two parts pivotally connected, the outer ends of the stays being piv handle bars and each made up of two bars piv otally connected at an intermediate point to cause the stay bars when aligned to space the side rails and handle bars and when moved on their in termediate pivots to move the respective side rails and the respective handle bars toward each other, the ends of the bars of the stays underlying and contacting the ends of the adjacent side rails when the stays are extended and the main and handle sections of the stretcher are in substan tial alignment and moved free of such contact otally connected to the handles at the respective ends of the frame on vertical pivots, said canvas being cut away to avoid canvas gripping adjacent the pivotal connections of the handles, the han dles when in operative position providing with the lateral side rails an extended stretcher frame and when in inoperative position reducing the overall length of the frame, the stays when moved on when the stays are moved on their intermediate pivots to collapse the stretcher, a handle section being movable into inclined relation to the main their inner pivots reducing the width of the frame. 30 section when the associated stay bars are free of the ends of the side rails, the inclined position 2. A construction as defined in claim 1, where of a handle section carrying the ends of the stay in the handles and side rails are pivotally con bars to overlie and contact the ends of the adja nected by tubular pivots, and wherein a foot rest cent side rails to prevent movement of the in is provided for the frame, said foot rest includ ing a cross member and depending members con 35 clined handle section in one direction. 6. A stretcher including a main section of in nected to the cross member, said depending mem dependent side rails, a handle section of inde bers having terminal ends to seat in said tubular pendent` handle bars pivotally connected to the pivots to support the cross member in spaced re side rails, and. a stay having an intermediate joint lation above and transverse the frame. to permit extended or folded positions of the stay, the ends of the `stay being connected to the han dle bars in such relation to the adjacent ends of the side rails that when the handle section is swung upwardly in a substantially similar plane ‘ ' with the main section the ends of the stays will underlie and support the main section, such stay ends when the handle section is at an inclination to the plane of the main section being in a posi tion to overlie and contact the adjacent ends of 50 the side rails to maintain the relatively inclined position of the handle section, and canvas carried by the side rails. 3. A construction as defined in claim 1, wherein ~ longitudinally extending straps are attached at their ends to the canvas, with their intermediate portions free of connection with the canvas, whereby when the structure is reduced in length and width, the free portions of the straps may be drawn upon to take up slack in the straps, to form a tie for the frame, and to mutually inter engage to form a carrying handlel 4. A stretcher including a main section includ ing spaced side rails and a handle section includ ing spaced handle bars, a canvas connected to the side rails and to the handle bars, the handle bars being swingingly connected to the side rails, and stays pivotally connected at their ends to the han dle bars and each made up of two bars pivotally connected at an intermediate point to cause the >Cì'rEORG‘rE BERREIIL LEATHER. WILLIAM HASTINGS WALLBANKS.