Ventilated windowed oven door

Claim 2

A windowed door for a range oven, the door combination comprising an outer cover panel and an inner double-walled panel unit, means for locating said panel unit in spaced relationship with said cover panel, said cover panel and said panel unit each having registering rectangular window openings therein, a viewing window assembly in said panel unit opening for viewing the interior of said oven, means for mounting an outer glass sheet on the inner face of said cover panel over said window opening, said mounting means including an inwardly curled flange formed around the four sides of said cover panel opening, a glass sheet mounting frame member for positioning around said outer glass sheet, said frame member formed with a channel-shaped cross section providing a bottom wall together with outer and iNner right-angled side wall flanges, said frame side flange positioned adjacent the inner face of said cover panel terminating in an outwardly curled flange whose curvature is complementary to the curvature of said cover panel opening''s curled flange, said frame member in its elongated form having a length equivalent to the peripheral dimension of said glass sheet and formed with three Vnotches before folding, each said V-notch dimensioned so as to correspond, respectively, to three of the corners of said glass sheet upon being folded into its rectangular form to enclose the edges of said glass sheet with the convex portion of said frame''s curled flange being nested in the concave portion of said cover panel curled flange, said frame having cooperating integral attaching means provided at the free ends thereof such that when interlocked at the remaining corner of said glass sheet securely retain said glass sheet and said frame on said cover panel.

Claim 3

A windowed door for enclosing a range oven, the door combination comprising an outer cover panel having rearwardly directed peripheral flanges, an inner double-walled box-casing located in spaced partially nested relationship with said outer cover panel peripheral flanges; said box-casing including a rear pan-shaped panel and a face panel, said rear pan-shaped panel having a forwardly extending first peripheral flange terminating in an inwardly extending second return flange, said face panel positioned in substantially parallel spaced relationship to said rear panel such that the marginal portion of said face panel abuts said rear pan-shaped panel second return flange, a plurality of threaded fasteners positioned around said marginal portion securing said second return flange to said face panel thereby forming said double-walled box-casing, means for securing said cover panel in spaced relation to said box-casing; said cover panel and said box-casing each having registering rectangular window openings therein, a viewing window assembly in said box-casing opening for viewing the interior of the oven, means for mounting an outer glass sheet on the inner face of said cover panel over said window opening, said mounting means including an inwardly curled flange formed around the four sides of said cover panel opening, a glass sheet mounting frame member for positioning around said outer glass sheet, said frame member formed with a channel-shaped cross section providing a bottom wall together with outer and inner right-angled side wall flanges, said frame side flange positioned adjacent the inner face of said cover panel terminating in an outwardly curled flange whose curvature is complementary to the curvature of said cover panel opening''s curled flange, said frame member in its elongated form having a length equivalent to the peripheral dimension of said glass sheet and formed with three V-notches dividing said frame into four lengths before folding; each said V-notch dimensioned so as to correspond, respectively, to three of the corners of said glass sheet upon said four lengths being folded into right-angular relationship to enclose the edges of said glass sheet with the convex portion of said frame''s curled flange bring nested in the concave portion of said cover panel curled flange, said frame having cooperating integral attaching means provided at the free ends thereof such that when interlocked at the remaining corner of said glass sheet securely retain said glass sheet and said frame on said cover panel.

Claim 4

A windowed door for enclosing a range oven, the door combination comprising an outer cover panel having rearwardly directed peripheral flanges, an inner double-walled box-casing located in spaced partially nested relationship with said outer cover panel peripheral flanges; said box-casing including a rear pan-shaped panel and a face panel, said rear pan-shaped panel having a forwardly extending first peripheral flange terminating in an inwardly extending second return flange, said face panel positioned in substantially parallel spaced relationship to said rear panel such that the marginal portion of said face panel abuts said rear pan-shaped panel second return flange, a plurality of threaded fasteners positioned around said marginal portion securing said second return flange to said face panel thereby forming said double-walled box-casing, means for securing said cover panel in spaced relation to said box-casing; said cover panel and said box-casing each having registering rectangular window openings therein, a viewing window assembly in said box-casing opening for viewing the interior of the oven, means for mounting an outer glass sheet on the inner face of said cover panel over said window opening, said mounting means including an inwardly curled flange formed around the four sides of said cover panel opening, a glass sheet mounting frame member for positioning around said outer glass sheet, said frame member formed with a channel-shaped cross section providing a bottom wall together with outer and inner right-angled side wall flanges, said frame side flange positioned adjacent the inner face of said cover panel terminating in an outwardly curled flange whose curvature is complementary to the curvature of said cover panel opening''s curled flange, said frame member in its elongated form having a length equivalent to the peripheral dimension of said glass sheet and formed with three V-notches dividing said frame into four lengths before folding; each said V-notch dimensioned so as to correspond, respectively, to three of the corners of said glass sheet upon said four lengths being folded into right-angular relationship to enclose the edges of said glass sheet with the convex portion of said frame''s curled flange bring nested in the concave portion of said cover panel curled flange, said frame having cooperating integral attaching means provided at the free ends thereof such that when interlocked at the remaining corner of said glass sheet securely retain said glass sheet and said frame on said cover panel.