Folding two-bunk beds and the like

Claim 1

IN A COLLAPSIBLE TWO-BUNK BED OF THE CHARACTER DESCRIBED, A LOWER MEMBER ADAPTED TO SUPPORT A MATTRESS, AN UPPER MEMBER ADAPTED TO SUPPORT A MATTRESS, DIRECTLY ABOVE SAID LOWER MEMBER, OPPOSITE FIRST AND SECOND AND OPPOSITE THIRD AND FOURTH FOLDABLE BRACES, EACH BRACE COMPRISING A PAIR OF HINGEDLY CONNECTED LINKS PIVOTALLY CONNECTED AT THEIR ENDS TO SAID LOWER AND UPPER MEMBERS AT MARGINAL REGIONS OF SAID MEMBERS, CO-OPERATIVE STOP MEANS ON SAID LINKS AND MEMBERS HOLDING SAID BRACES IN EXTENDED CONDITION AND ALLOWING THE FIRST AND SECOND BRACES TO BE FOLDED ONLY IN A DIRECTION TOWARDS THE THIRD AND FOURTH BRACES RESPECTIVELY AND THE THIRD AND FOURTH BRACES TO BE FOLDED ONLY IN A DIRECTION TOWARDS THE FIRST AND SECOND BRACES RESPECTIVELY; CORRESPONDING LINKS, ONE OF EACH BRACE, HAVING AN ELEMENT EXTENDING THERFROM RESPECTIVELY AT THE HINGE REGION CONNECTING THE TWO LINKS OF EACH BRACE, EACH OF SAID ELEMENTS OVERLAPPING THE OTHER LINKS OF SAID BRACES RESPECTIVELY; A HOLE BEING PROVIDED IN EACH OF SAID ELEMENTS AND IN EACH LINK THEY OVERLAP; THOSE OF SAID HOLES WHICH ARE IN THE FIRST AND SECOND BRACE STRUCTURES BEING IN ALIGNMENT AND THOSE OF SAID HOLES WHICH ARE IN THE THIRD AND FOURTH BRACES BEING IN ALIGNMENT, A FIRST TUBULAR HOUSING SPANNING THE FIRST AND SECOND BRACES AND SECURED AT ITS ENDS TO SAID BRACES RESPECTIVELY WHEREBY THE INTERIOR OF SAID FIRST TUBULAR HOUSING IS COMMUNICATIVE WITH THE HOLES IN THE FIRST AND SECOND BRACES, FIRST AND SECOND LATCH BOLTS ROTATABLY AND SLIDABLY FITTED IN SAID FIRST TUBULAR HOUSING; SAID FIRST LATCH BOLT EXTENDING THROUGH AND SLIDABLY AND ROTATABLY FITTED IN THE ALIGNED HOLES IN THE FIRST BRACE; SAID SECOND LATCH BOLT EXTENDING THROUGH AND SLIDABLY AND ROTATABLY FITTED IN THE ALIGNED HOLES IN THE SECOND BRACE STRUCTURE, MEANS ASSOCIATING THE FIRST AND SECOND LATCH BOLTS WHEREBY THEY ARE FREE TO SLIDE INDEPENDENTLY BUT TO ROTATE TOGETHER, A SPRING MEANS BIASING SAID FIRST AND SECOND LATCH BOLTS TO MOVE APART IN SAID FIRST TUBULAR HOUSING, A SECOND TUBULAR HOUSING SPANNING THE THIRD AND FOURTH BRACES AND SECURED AT ITS ENDS TO SAID BRACES RESPECTIVELY WHEREBY THE INTERIOR OF SAID SECOND TUBULAR HOUSING IS COMMUNICATIVE WITH THE HOLES IN THE THIRD AND FOURTH BRACES, THIRD AND FOURTH LATCH BOLTS ROTATABLY AND SLIDABLY FITTED IN SAID SECOND