US740002A - Collapsible stretcher. - Google Patents

Description

No. 740,002. I PATENTED. SEPT. 29, 190s. K. PREULER.

OOLLAPSIBLE STRETOHER.

' APPLICATION FILED AUG. 4. 1902.

N0 MODEL.

J/i'ma fses: llwemm':

5 660 rjzqy UNITED STAT S I Patented September 29, 1903.

PAT NT OFFICE.

COLLAPSIBLE STRETCH ER.

SPECIFICATION forming part of Letters Patent N01 740,002,dated September 29, 1903.

Application filed August 4:, 1902.

To all whom, it may concern:

Be it known that L'KASPAR FREULER, a citi zen of the Republic of Switzerland, residing at Ziirich,i'n the Republic of Switzerland, (whose post-office address is 120 Birmensdorferstrasse, Ziiricl1,) have invented new and useful Improvements inOollapsible Stretchers, (for which I have made application for patents in Switzerland, No. 29,51 1, May 21, 1902; Germany June 2-1, 1902; Austria June 21, 1902; Hungary July 2, 1902; France July 5, 1902; Belgium June 21,1902; Denmark July 7, 1902; Spain July '7, 1902; Sweden July 8, .1902; Italy July '8, 1902 -Norway July 9, .1902;

Portugal July, 10, 1902; England July 12,

1902, No. 15,559,) of which the following is a specification.

My invention relates to improvements in that type of collapsible stretchers in which the frame is formed in lazy-tongs fashion.

The object is to increase the carryingpower and at the same time reduce the weight'oE such stretchers andfto cause the props of the head rest in extendingor collapsing the stretcher to rise or fall automatically and so as to takeup as little spaceas possible when collapsed. I attain these objects by the means illustrated in the accompanying drawings, in whichv Figure 1 is a side view of a stretcher extended, and Fig. '2 of the same about half collapsed. Y

Similar letters referto similar parts throughout the several views.

In carrying out my invention and referring to the figures generally, each frame side consists of two or more lazy-tongs, in the present instance two, a and b, hinged together and placed upon each other, the tongs a being dis tinguished from b in Fig. 1 by being shaded. The said lazy-ton gs are hinged together where theycross each other,their ends 0 being jointed at e to the corner-pie'ces d, formed of angleiron, and the ends f by means of headed pins 9, guided in slots h, formed in, the saidcornerpieces as well as the ends 1'. In sliding the tongs end pins 9 upward they abut against the endof the slot h, in which position they 'lapsing the stretcher. the upper tongs ends,carry headed pins s,onto

Serial No. 118,407; (No model.)

are retained by the hooks Z, while the stretcher remains extended.

To the corner-pieces d are pivoted at m the handles a and to the latter the rails 0, the free ends of which are formed into eyes adapted to be placed onto the pins 9 of the tongs ends 2'. At the head of the stretcher rails q are connected with the tongs ends 2', guidedin straps T, which rails serve to hold the head portion of the stretcher-cloth and are adapted to rise when extending and to fall when col- These rails, as well as which the stretcher-cloth is hooked.

In collapsing the stretcher the hooks Z and the rails 0 are removed from the pins g and the tongs pushed together, after which the handles n are turned inward.

The carrying power of the stretcher is increased by the increased number of crosslevers (tongs parts) employed and connected together at short distances apart from each other, which levers may be made of such light material that, as'practice has proved, a stretcher weighing from seven to eight kilos will have a carrying power of at least .one

hundred and fifty kilos. In collapsing the stretcher the said cross-levers, being very slender, will take up comparatively very little room. By lengthening the said cornerpieces the described stretcher system may also beused as camp-bed or the like.

What I claim as my invention, and desire to secure by Letters Patent, is-

1. A folding stretcher comprising two pairs of corner-posts, a series of lazy tongs sec tions connecting the posts of each pair .and

pivoted thereto at their upper corners, the lower end of each lazy-tongs section being arranged to slide in a vertical slot in the post, and a pair of vertical rods adapted to support a head-rest, said rods bein'gslidably mounted on the posts at the head end of a bed and pivotally connected at their ends to the lower ends of the lazy-tongs sections whereby the'extension of the bed causes said rods to be projected above the upper ends of said posts.

2. A folding stretcher or bed, a head-post on the upper end thereof for attaching a 10 having vertical guides and a vertical rod head-rest, and means for holding said rod in adapted to'support a head-rest vertically raised position.

slidable in said guides. In witness whereof I have hereunto set my 3. A folding stretcher or bed, a head-post hand in presence of two Witnesses.

comprising a vertical standard adapted to KASPAR FREULER.

support the frame and having a longitudinal \Vitnesses:

socket therein, a head-restsupporting rod CARL MILLER,

reeiprocable in said socket and having means A. LIEBERKNECHT.

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