US2898642A

US2898642A - Door frame and sill therefor

Info

Publication number: US2898642A
Application number: US579380A
Authority: US
Inventors: Harold A Etling
Original assignee: WEATHER SEAL Inc
Current assignee: WEATHER SEAL Inc
Priority date: 1956-04-19
Filing date: 1956-04-19
Publication date: 1959-08-11
Anticipated expiration: 1976-08-11

Description

Aug. 11, 1959 Filed April 19, 1956 H. A. ETLING DOOR FRAME AND SILL THEREFOR I /f A? Y 2 Sheets-Sheet 1 INVENTOR.

1959 H. A. ETLING 2,898,642

I DOOR FRAME AND SILL THEREFOR Filed April 19. 1956 2 Sheets-Sheet 2 F/F-fi V i /40 75-5 44 J4 07 J3 4/ J2 o o 4? ii J0) INVENTOR.

HHFULJ H F 72/175 29m $6M United States Patent DOOR FRAlVIE AND SILL THEREFOR Harold A. Etling, Marshallville, Ohio, assignor t0 Weather-Seal, -Inc., Summit County, Ohio, :1 corporation of Ohio Application April 19, 1956, Serial No. 579,380 4 Claims. (CI. 20-11 This invention relates to door frames and sills for building construction and is especiallyuseful in the construction of outside door openings where a water shedding heavy sill is necessary.

Herctofore in the construction of frame buildings, it has been customary to lay the box sills and floor jo'ists and then to lay a sub fioor of boards thereover. The wall and partition framing is then constructed and seated upon the sub-floor. Outside door casings areusually factory constructed and comprises a pair of jambs morticed to receive a header and a sill mounted therebetween. It has been the practice to chop' away the subfloor and the top of the box sill to provide clearance for the door sill with the result that the door sill has not had proper support throughout its length and the subfloor was weakened adjacent the doorway. Lack of proper support results in loosening of the sill relative to the jambs and settling, rotting, warping and cracking of the sill result. Furthermore the chopping away of the sub-structure is a needless waste of time.

. The present invention aims to overcome the foregoing and other difiiculties.

. It is an object of the invention to provide an outside door sill which can be employed in framing a door opening without weakening the sub-floor or other substructure.

Another object is to provide a sill which is firmly supported by the sub-structure throughout the width of the door opening.

Further objects are to conserve labor, to provide a superior building structure, and to relieve the jambs fro shear loads. 1

These and other objects will appear from the following description and the accompanying drawings.

Of the drawings:

Fig. 1 is a perspective view of an outside doorway with the sill in place;

Fig. 2 is a cross sectional view thereof, taken on line 2-2 of Fig. 1;

Fig. 3 is a perspective view of a section of the sill as viewed from below;

Fig. 4 is a perspective view of the lower end of a door jamb morticed to receive the sill of Fig. 3, the remainder of the jamb being broken away;

Fig. 5 is a view similar to Fig. 4 but showing a modified construction; and

Fig. 6 is a sectional view similar to Fig. 2 but showing a modification of the door sill and threshold.

Referring to the drawings, and first to Fig. 1, this shows a doorway with a door 10 mounted therein, the doorway lbeing framed by studding and headers (not shown) to which are secured the door frame comprising a pair of jambs 11, a header 12, and a sill 13. The jambs and header extend outwardly flush with the sheathing and

outer casing boards

14, and 16 are secured over their margins. The siding 17 abuts the outer casings. The door 10 is hung in a rabbet 18 (see Fig.

2,898,642 Patented Aug. 195 9 ice 4) provided about the door opening at the inner margin of the frame.

With reference to Fig. 2, the building includes joists 19 and a box sill header 20 over which a sub-floor 21 is laid.

The sill 13 of this invention is adapted to provide adequate drainage and support from the sub-floor 21 or other underlying substructure and for this purpose has an inclined upper or tread face 25 which slopes outwardly of the building, a lower inclined face 22 parallel to the upper face 25, and vertical edge faces 23 and 24. To provide for seating the sill on the level sub-floor or other sub-structure, a rabbet 26 is formed in the lower side of the sill and has a horizontal face27 and a vertical face 28, the horizontal face being adapted to rest throughout its extent upon the upper face of the sub floor 21 and the vertical face 28 resting against the outer margin thereof flush with the box sill. The finish floor 29 is laid over the sub-floor with the frame in place and abutting the sill. A threshold 30 is mounted over the joint between the sill and the finish floor and as the finish floor is usually lower than the sill, the threshold is rabbeted to provide a lower seating face 31 for resting over the floor and an upper seating face 32 for resting upon a level margin 33 formed on the sill. The threshold is preferably ploughed between the two seats to provide a clearance space 34. Margins of the threshold are chamfered as at 35 and 36 'to' meet the floor surface and the upper face of the sill respectively;

While the sill of the invention may be mountedin the opening and the jambs and header may then be fitted thereover, better practice is to provide these parts in an assembled frame in which the ends ofthe header and the sill are fitted in rabbets or mortices provided in the jambs as this practice assures that the frame is properly squared in the opening and that the jambswill not spring inwardly and bind on the door.

This practice also providessome support at thewends of the sill and spaces the sill and header vertically.- l r Asthe sill of this invention is somewhat morecomplicated in cross sectional shape, the jambs require complementary mortices to receive it. Such a mortice is shown in Fig. 4'and it will be noted that the lower margin 37 is square with the jamb and may be cut through from margin to margin of the jamb. Also that the upper margin 38 is uniformly inclined across all of the face of the jamb except at the rabbet 18, and in fact may be cut entirely across resulting in a slight space at the door rabbet 18 which will be covered by the threshold. The corner 39 may be removed by routing. With the sill in the mortice, the jambs are nailed to the ends of the sill and the header.

Where it is desired to simplify machining operations, a modified construction, illustrated in Fig. 5, may be employed. Here the jamb 40 is ploughed to a uniform depth across the face of the jamb at the inclination of the sill providing

parallel margins

41 and 42. A wedge 43 is then made of size and shape to fill the rabbet 26 of the sill and tacked in place as shown. The space remaining in the ploughed rabbet will closely fit the end of the sill except in the region of the rabbet 44 for fitting the door. At this position a slight wedge shaped space will exist which could be filled with a wedge. However, the threshold covers this space and the sill is well supported so that this space does no harm.

Furthermore, when the jambs are ploughed as in Fig. 5, the sill may be made as shown at 13 in Fig. 3 except that the horizontal surface 33 may be omitted and the inclined surface 25 continued entirely across the upper out therebetween to accommodate the inclined margin of the sill. The lower ends of the jambs are madeto drop below the sill as seen in Figs. 4 and 5 to provide some support for the sill from the jambs and to properly space the sill from the -header. In mounting thedoorframe, these may preferably be left in place and notches cut in thesub-floonmargin to clear them. The subfioor between these notches will support the sill entirely across the space between the jambs.

Variations may be made without departing from the scope of the invention as it is defined by the following claims.

Iclaim: p

1. In a door frame construction, a door sill, jamb members having their inwardly exposed faces ploughed on an incline. to receive the ends of said sill, said sill having upper and lower faces similarly inclined downwardly and outwardly of-the frame, the lower surface of said sill having a rabbet formed therein throughout its length and. defined by a level horizontal rabbet face for supporting the sill from a sub-structure, and a ver tical rabbet face for abutting a vertical margin of the substructure, and wedge means secured to said jarnb members on the lower surfaces of said ploughed incline to provide horizontal and vertical support surfaces for engaging the rabbetted surfaces of said sill.

2. In combination, a building having a sub-floor therein, said building having an outside doorway therein, a door sill supported on said sub-floor at said doorway, said door sill having a stepped lower surface adapted to engage the sub-floor at the edge thereof and protrude outwardly therefrom, said door sill having a horizontal top surface section at the top inner edge thereof, which top surface slants downwardly and forwardly from such horizontal section, said building having a finished floor therein abutting on said door sill, and a threshold supported at the front margin thereof at the forward margin of said horizontal section of said door sill, the rear edge of said threshold protruding downwardly over a corner of said door sill to engage said finished floor and be supported thereon.

3. In combination, a building having a sub-floor therein, said building having an outside doorway therein, a

door sill supported on said sub-floor at said doorway, said door sill having a fiat bottom surface terminating in a downwardly directed edge section forming a right angled corner with said bottom surface, which corner engages the upper corner edge of said sub-floor at said doorway and overhang said sub-floor, said door sill having a horizontal top surface section at the top inner edge thereof, which top surface slants downwardly and forwardly from such horizontal section, said building having a finished floor therein abutting on said door sill, and a threshold supported at the front margin thereof at the forward margin of said horizontal section of said'door sill, the rear edge of said threshold protruding downwardly over a corner of said door sill to engage said finished floor and be supported thereon, the top surface of said finished floor being below the top surface of said door sill.

4. In combination, a building having a wallwith-an outside door opening, a sub-floor extendingthroughsaid opening to the outer face of the wall, a door frame in said opening having a sill extending over and supported throughout its length by said sub-floor, said sill havin a stepped lower surface including a horizontal section adapted to rest directly on said sub-floor at the margin thereof and to protrude outwardly and downwardly therefrom, said sill having an outwardly sloping top surface, said building having a finished floor therein abutting on said door sill and a threshold supported at the front margins thereof at the forward margin of said horizontal section of said sill, the rear edge of said threshold protruding downwardly over a corner of said door sill to engage said finished floor and be supported thereon.

References Cited in the file of this patent UNITED STATES PATENTS Re.21,001 Beil et al. Feb. 14, 1939 718,926 Gauron Jan. 20, 1903 1,700,152 Beck Ian. 29, 1929 1,917,845 Kemp July 11, 1933 1,995,233 Triller Mar. 19, 1935 2,823,429 Grant Feb. 18, 1958