Under mattress for reclining furniture

Claim 2

In an under mattress for reclining furniture having a frame which is pivotally mounted in side portions of the reclining furniture and is subdivided into at least two sections which are relatively pivotable about an axis transverse to the longitudinal axis of the reclining furniture, the angular position of the two sections being lockable by a stop means operable by a person resting on the under mattress in a substantially horizontal stop position and at least one other stop position, the improvement wherein: said stop means comprises locking devices provided on each side of said frame at the ends of each section thereof adjacent to said pivoting axis, each device comprising a plurality of parallel spaced-apart arresting plates forming an assembly rigidly attached to its associated section of said frame, edges of said plates in each assembly being formed with a plurality of relatively aligned recesses, with leading portions of the corresponding assemblies of the two locking devices attached to the adjoining sections of said frame interdigitating on each side of said frame, whereby the assemblies forming each pair of interdigitated assemblies are relatively turnable when the two sections of said frame are relatively tilted, there being provided adjacent to the recessed edges of at least one pair of interdigitated assemblies a locking pawl which is manually tiltable about a pivot and having a locking tooth which points towards the recesses in said arresting plates, said pawl being resiliently urged into locking engagement with said recesses, the end of said pawl remote from its locking tooth being attached to a member which is adapted to be frictionally retained by a retaining element on a longitudinal side member of said frame to thereby maintain said locking pawl out of engagement with said recesses, said retaining element comprising a friction roller provided with a peripheral slot which narrows in the radially inward direction.

Claim 3

An under mattress frame according to claim 1, in which the friction roller is made of a synthetic plastics material.

Claim 4

An under mattress according to claim 1 in which the recesses of all the arresting plates are located on circular arcs about the axis of the hinge joining the two sections of the frame together.

Claim 5

An under mattress according to claim 1 in which two locking pawls are provided which are fast on a common shaft extending across the frame.

Claim 6

In an under mattress for reclining furniture having a frame which is pivotally mounted in side portions of the reclining furniture and is subdivided into at least two sections which are relatively pivotable about an axis trnsverse to the longitudinal axis of the reclining furniture, the angular position of the two sections being lockable by a stop means operable by a person resting on the under mattress in a substantially horizontal stop position and at least one other stop position, the improvement wherein: said stop means comprises locking devices provided on each side of said frame at the ends of each section thereof adjacent to said pivoting axis, each locking device comprising a plurality of parallel spaced-apart arresting plates forming an assembly rigidly attached to its associated section of said frame, edges of said plates in each assembly being formed with a plurality of relatively aligned recesses, with leading portions of the corresponding assemblies of the two locking devices attached to the adjoining sections of said frame interdigitating on each side of said frame, whereby the assemblies forming each pair of interdigitated assemblies are relatively turnable when the two sections of said frame are relatively tilted, there being provided adjacent to the recessed edges of at least one pair of interdigitated assemblies a locking pawl which is manually tiltable about a pivot and having a locking tooth which points towards the recesses in said arresting plates, said pawl being resiliently urged into locking engagement with said recesses, the end of said pawl remote from its locking tooth being attached to a member which is adapted to be frictionally retained by a retaining element on a longitudinal side member of said frame to thereby maintain said locking pawl of engagement with said recesses, said locking pawl being formed on the underside thereof with a ramp at a distance from said axis of the hinge joining said two sections of said frame, which distance, when said pawl is disengaged, exceeding the distance from said axis to an adjacent upper edge of a bottom web of said frAme, whereby said upper edge will ride under said ramp when said two sections of said frame are deflected into their fully extended position, and force said pawl upwards into locking position by overcoming the frictional resistance to release of said clamping member by said retaining element.

Claim 7

In an under mattress for reclining furniture having a frame which is pivotally mounted in side portions of the reclining furniture and is subdivided into at least two sections which are relatively pivotable about an axis trnsverse to the longitudinal axis of the reclining furniture, the angular position of the two sections being lockable by a stop means operable by a person resting on the under mattress in a substantially horizontal stop position and at least one other stop position, the improvement wherein: said stop means comprises locking devices provided on each side of said frame at the ends of each section thereof adjacent to said pivoting axis, each locking device comprising a plurality of parallel spaced-apart arresting plates forming an assembly rigidly attached to its associated section of said frame, edges of said plates in each assembly being formed with a plurality of relatively aligned recesses, with leading portions of the corresponding assemblies of the two locking devices attached to the adjoining sections of said frame interdigitating on each side of said frame, whereby the assemblies forming each pair of interdigitated assemblies are relatively turnable when the two sections of said frame are relatively tilted, there being provided adjacent to the recessed edges of at least one pair of interdigitated assemblies a locking pawl which is manually tiltable about a pivot and having a locking tooth which points towards the recesses in said arresting plates, said pawl being resiliently urged into locking engagement with said recesses, the end of said pawl remote from its locking tooth being attached to a member which is adapted to be frictionally retained by a retaining element on a longitudinal side member of said frame to thereby maintain said locking pawl of engagement with said recesses, said locking pawl being formed on the underside thereof with a ramp at a distance from said axis of the hinge joining said two sections of said frame, which distance, when said pawl is disengaged, exceeding the distance from said axis to an adjacent upper edge of a bottom web of said frAme, whereby said upper edge will ride under said ramp when said two sections of said frame are deflected into their fully extended position, and force said pawl upwards into locking position by overcoming the frictional resistance to release of said clamping member by said retaining element.

Claim 8

An under mattress according to claim 5, in which the recesses of all the arresting plates are located on circular arcs about the axis of the hinge joining the two sections of the frame together.

Claim 9

An under mattress according to claim 5, in which two locking pawls are provided which are fast on a common shaft extending across the frame.