Metal frame for doorways

Claim 2

A sheet metal frame for a door opening in a wall comprising a pair of front jamb parts, a front header part, a pair of rear jamb parts, a rear header part, means connecting said header parts in crossing relation over the upper ends of their respective jamb parts, each of said parts having a wall engaging flange and a transversely turned flanged adapted to project into the door opening, the transversely turned flanges on said front jamb parts having door stop ribs of U-shaped cross section formed along the rear edges thereof and extending the full length of the jamb parts, the transversely turned flange on said front header part terminating short of the ends of the wall engaging flange thereof and overlying the transversely extending flanges of the front jamb parts and having a further shortened U-shaped door stop rib on its rear edge which abuts the transverse sides of the stop ribs on the front jamb parts, the transverse flanges on said rear jamb and rear header parts projecting forwardly in lapped relation over the outer sides of said door stop ribs, the wall engaging flanges of said parts having holes formed inwardly of their off-set edges to receive fasteners to be driven into the wall, outwardly off-set tongues extending downwardly from the overhanging ends of the wall engaging flanges on said header parts, outwardly off-set ribs extending as continuations of said tongues into the wall engaging flanges of the header parts and curved laterally inwardly across the tops of the transverse flanges on the jamb parts, and outwardly off-set straps along the ends of the wall engaging flanges of the jamb parts forming slots retainingly receiving said tongues.

Claim 3

A metal frame for a doorway as defined in claim 1 in which the lower ends of the tongues on said header parts are slit laterally inwardly from each side and then downwardly to provide outwardly projecting tabs lockingly engageable under said straps on said jamb parts.

Claim 4

A metal frame for a doorway as defined in claim 1 in which the transverse flanges on said rear jamb parts have horizontal slits near the ends thereof forming other straps off-set outwardly of the door opening, and other depending tongues turned downwardly from the ends of the transverse flange of said rear header part retainingly received between said other straps and the transverse flanges of the rear jamb parts.

Claim 5

A metal frame for a doorway as defined in claim 1 in which the ends of the transverse flange on said front header part have rearwardly facing tabs thereon formed by rearwardly opening slots along the ends of the door stop rib of said front header part, said tabs being bendable over the tops of the door stop ribs on said front jamb parts.

Claim 6

A metal frame for a doorway as defined in claim 1 in which the door stop ribs on said front jamb parts have forwardly turned flanges on their rear edges located in the same general planes as the forward portions of the transverse flanges on the front jamb parts, the ends of said forwardly turned flanges on said front header part having laterally projecting tabs thereon overlying the tops of the door stop ribs on said front jamb parts.

Claim 7

A sheet metal frame for a door opening in a wall comprising a pair of front jamb parts, a front header part, a pair of rear jamb parts, a rear header part, each of said parts having a wall engaging flange and a transversely turned flange adapted to project into the door opening with wall engaging flanges of the header parts abutted against the tops of the wall flanges on the jamb parts, the transversely turned flanges on said front jamb parts having door stop ribs of U-shaped cross section formed along the rear edges thereof and extending the full length of the jamb parts, a transversely turned flange on one of said header parts having a shortened U-shaped door stop rib on its free edge which abuts the transverse sides of the stop ribs on the front jamb parts, the transverse flanges on said rear jamb parts projecting forwardly in lapped relation over the outer sides of said door stop ribs on said front jamb parts, the transverse flange on the other of said header parts overlying the door stop rib on said one of header parts, the wall engaging flanges of said parts having holes formed inwardly of their laterally outer edges to receive fasteners to be driven into the wall, outwardly off-set tongues extending downwardly from the overhanging ends of the wall engaging flanges on said header parts, outwardly off-set ribs extending as continuations of said tongues into the wall engaging flanges of the header parts and curved laterally inwardly across the ends of the transverse flanges on the heaDer parts, outwardly off-set straps along the ends of the wall engaging flanges of the jamb parts forming slots retainingly receiving said tongues, other downwardly extending tongues on the ends of the transverse flange of said rear header part, and second outwardly off-set straps on the ends of the transverse flanges on said rear jamb parts forming slots retainingly receiving said other downwardly extending tongues.

Claim 8

A sheet metal frame for a door opening in a wall comprising a pair of front jamb parts, a front header part, a pair of rear jamb parts, a rear header part, each of said parts having a wall engaging flange and a transversely turned flange adapted to project into the door opening with wall engaging flanges of the header parts abutted against the tops of the wall flanges on the jamb parts, the transversely turned flanges on said front jamb parts having door stop ribs of U-shaped cross section formed along the rear edges thereof and extending the full length of the jamb parts, a transversely turned flange on one of said header parts having a shortened U-shaped door stop rib on its free edge which abuts the transverse sides of the stop ribs on the front jamb parts, the transverse flanges on said rear jamb parts projecting forwardly in lapped relation over the outer sides of said door stop ribs on said front jamb parts, the transverse flange on the other of said header parts overlying the door stop rib on said one of header parts, the wall engaging flanges of said parts having holes formed inwardly of their laterally outer edges to receive fasteners to be driven into the wall, outwardly off-set tongues extending downwardly from the overhanging ends of the wall engaging flanges on said header parts, outwardly off-set ribs extending as continuations of said tongues into the wall engaging flanges of the header parts and curved laterally inwardly across the ends of the transverse flanges on the heaDer parts, outwardly off-set straps along the ends of the wall engaging flanges of the jamb parts forming slots retainingly receiving said tongues, other downwardly extending tongues on the ends of the transverse flange of said rear header part, and second outwardly off-set straps on the ends of the transverse flanges on said rear jamb parts forming slots retainingly receiving said other downwardly extending tongues.

Claim 9

A metal door frame as defined in claim 6 in which the shortened door stop rib across the top of the frame is formed on the front header part, the rear edge of said shortened door stop rib having a narrow forwardly turned flange thereon, and a lug on each end of said narrow flange projecting laterally over the upper ends of the door stop ribs on said front jamb parts.

Claim 10

A metal door frame as defined in claim 7 in which there are U-shaped spring clips pressed downwardly over the upper ends of the door stop ribs on said front header parts with the bottoms of the clips bearing against the upper sides of the lower wall of the door stop rib on the front header part.

Claim 11

A metal door frame as defined in claim 7 in which the free edges of said wall engaging flanges are turned outwardly from the planes thereof, outwardly protruding embossments formed in said wall engaging flanges in longitudinally aligned relation and inwardly of the holes therein and having free edges facing inwardly toward the door opening, tabs on said last free edges projecting laterally toward the door opening, and metal trim strips of U-shaped cross section fitted to all said parts, said trim strips having inturned lips along their outer edges fitting retainingly behind the free edges of the wall engaging flanges, and reversely curved springable flanges along their other edges springably engaged under said tabs on said protrusions.

Claim 12

A metal door frame as defined in claim 9 in which the outwardly turned free edges of said wall engaging flanges extend substantially continuously therealong.

Claim 13

A metal door frame as defined in claim 9 in which the outwardly turned free edges of said wall engaging flanges are interrupted and cut away opposite the fastener receiving holes therein.

Claim 14

A sheet metal frame for a door opening in a wall comprising a pair of front jamb parts, a front header part, a pair of rear jamb parts, a rear header part, each of said parts having a wall engaging flange and a transversely turned flange adapted to project into the door opening, the transversely turned flanges on said front jamb parts having door stop ribs of U-shaped cross section formed along the rear edges thereof, the transversely turned flange on said front header part terminating short of the ends of the wall engaging flange thereof and overlying the transversely extending flanges of the front jamb parts and having a depending U-shaped door stop rib on its rear edge which abuts the ends of the stop ribs on the front jamb parts, the transverse flanges on said rear jamb and rear header parts projecting forwardly in lapped relation over the outer sides of said door stop ribs, the wall engaging flanges of said parts having holes formed inwardly of their off-set edges to receive fasteners to be driven into the wall, outwardly off-set tongues extending downwardly from the overhanging ends of the wall engaging flanges on said header parts, outwardly off-set straps along the ends of the wall engaging flanges of the jamb parts forming slots retainingly receiving said tongues on said header parts, and U-shaped spring clips frictionally engaged over the ends of the transversely extending portion of part of said door stop ribs, said clips extending into abutting and retaining engagement with the outer concealed surface of the door stop rib on the adjacent part.

Claim 15

A sheet metal frame for a door opening in a wall comprising a pair of front jamb parts, a front header part, a pair of rear jamb parts, a rear header part, each of said parts having a wall engaging flange and a transversely turned flange adapted to project into the door opening, the transversely turned flanges on said front jamb parts having door stop ribs of U-shaped cross section formed along the rear edges thereof, the transversely turned flange on said front header part terminating short of the ends of the wall engaging flange thereof and overlying the transversely extending flanges of the front jamb parts and having a depending U-shaped door stop rib on its rear edge which abuts the ends of the stop ribs on the front jamb parts, the transverse flanges on said rear jamb and rear header parts projecting forwardly in lapped relation over the outer sides of said door stop ribs, the wall engaging flanges of said parts having holes formed inwardly of their off-set edges to receive fasteners to be driven into the wall, outwardly off-set tongues extending downwardly from the overhanging ends of the wall engaging flanges on said header parts, outwardly off-set straps along the ends of the wall engaging flanges of the jamb parts forming slots retainingly receiving said tongues on said header parts, and U-shaped spring clips frictionally engaged over the ends of the transversely extending portion of part of said door stop ribs, said clips extending into abutting and retaining engagement with the outer concealed surface of the door stop rib on the adjacent part.

Claim 16

The sheet metal frame for a door opening as defined in claim 12 in which the door stop ribs on said front jAmb parts extend the full lengths thereof, and the door stop rib on said front header part is shorter than the header part, whereby the ends of the door stop rib on the header part abut the inwardly facing sides of the door stop ribs on said front jamb parts, said spring clips being applied over the upper end of the door stop ribs on the front jamb parts.

Claim 17

A sheet metal frame for a door opening in a wall comprising a pair of front jamb parts, a front header part, a pair of rear jamb parts, a rear header part, each of said parts having a wall engaging flange adapted to be secured to a wall and a transversely turned flange adapted to project into the door opening, the transversely turned flanges on said front jamb and front header parts having door stop ribs of U-shaped cross section formed along the rear edges thereof, and clip elements of U-shaped cross section facing said transverse flanges and having outturned flanges on the edges of the U-section welded to the outer sides of the transverse flanges of said front jamb and front header parts and projecting rearwardly across the stop ribs thereof and springably urged to engagement with the rear edges of said stop ribs, the transverse flanges on said rear jamb and rear header parts projecting forwardly in lapped relation over the outer sides of said door stop ribs and being yieldably and slidably received between said clip elements and the outer rear edges of the stop ribs, the outwardly turned flanges on said clips being off-set outwardly of the frame behind the welded connections thereof, and inclined inwardly of the door opening to the rear edges of said doorstop ribs.

Claim 18

A sheet metal frame for a door opening in a wall comprising a pair of front jamb parts, a front header part, a pair of rear jamb parts, a rear header part, each of said parts having a wall engaging flange adapted to be secured to a wall and a transversely turned flange adapted to project into the door opening, the transversely turned flanges on said front jamb and front header parts having door stop ribs of U-shaped cross section formed along the rear edges thereof, and clip elements of U-shaped cross section facing said transverse flanges and having outturned flanges on the edges of the U-section welded to the outer sides of the transverse flanges of said front jamb and front header parts and projecting rearwardly across the stop ribs thereof and springably urged to engagement with the rear edges of said stop ribs, the transverse flanges on said rear jamb and rear header parts projecting forwardly in lapped relation over the outer sides of said door stop ribs and being yieldably and slidably received between said clip elements and the outer rear edges of the stop ribs, the outwardly turned flanges on said clips being off-set outwardly of the frame behind the welded connections thereof, and inclined inwardly of the door opening to the rear edges of said doorstop ribs.