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Publication numberUS937430 A
Publication typeGrant
Publication dateOct 19, 1909
Filing dateOct 30, 1908
Priority dateOct 30, 1908
Publication numberUS 937430 A, US 937430A, US-A-937430, US937430 A, US937430A
InventorsWilliam Lewis Evans Jr
Original AssigneeWilliam Lewis Evans Jr
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Construction of doors.
US 937430 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)


937,430. I Pat nted 099191909.


CONSTRUCTION or noons] Speciflcation'ot Letters Patent.

Patented Oct. 19, 1909.

Application filed October 80, 1908. Serial No. 460,350.

To all whom it may concern:

Be it known that I,W1LLIAM Lnwrs EVANS, Jr., a citizen of the United States, residing at Vashington, in the county of Daviess and State of Indiana, have invented'a new and useful Construction of Doors, of which the following is a specification.

This invention relates to that .class of doors known as flush b reason of their smooth surfaces, and sometimes called sanitary for the same reason.

The object of the present invention is to provide a door of this kind having airspaces on the inside thereof to reduce the weight of the door, and also to obviate the necessity of gluing up a solid core, thus reducing the cost of the door.

A further object is to provide a construction which enables the parts constituting the door to be readily assembled and glued up in one operation.

The invention also has for its object to provide a door construction which will permit the omission or the cutting out of parts, and the insertion of glass or wood panels.

The invention also has for its object certain other advantageous and novel structural details, all of which will appear more fully hereinafter.

Figure 1 is a face view of the door, partly broken away. Fig. 2 is an enlarged section on the line 2-2 of Fig. 1. Fig. 3 is a face view, partly broken away, of a door provided with a space for a panel.

Each of the form of doors shown in the drawings comprises edge strips 10, forming a skeleton frame to which. are secured horizontal cross strips 11 and the outer sheathing 12 of veneer. Between the cross strips are placed strips 13 which-may run in any direction, but preferably perpendicular. The edge strips 10 are rabbeted on opposite sides as indicated at 14 to receive the inner end of the cross strips 11. The sheathing 12 is glued on the outside of the cross strips 11 and extends over the entire surface of the door to the outer edge of the strips 10, it being also glued to said strips.

By the construction herein described air spaces. are left between the strips 10 and 13 inclosed by the strips 11, which reduces the weight of the door, and also provides a space for the reception of a non-combustible ma terial if a fire-proof door is desired. The construction also does away with the necessity ofgluing up a solid core, thus reducing the cost of manufacture. Glue can be applied to the different pieces during the construction of the door so that they can all be put under a press and finished atone clamp ing operation.

It will be readily seen that, by reason of the air spaces and by crossing the grain of the cross strips and the veneers, the door will have little tendency to shrink or swell in length or breadth, and the door is made very strong. The strips 13 and the rabbeted edge strips 10 make the door very stiff as they are all glued solidly to the cross strips 11. The cross strips and the sheathing can be run in any direction, but in general work it will be preferable to run the cross strips horizontally and the sheathing veneers perpendicularly. The strips 11 and the strips 13 are entirely hidden by the edge strips 10, thus leaving no end wood exposed for the absorptionof moisture, which would have a tendency to cause swelling of the wood and softening of the glue. The construction is also such that it permits the cutting of the door in any manner necessary for the insertion of panels of any shape orkind. The strips 10 may be made of one or more pieces and they may be placed only at the two vertical edges of the door, but preferably they also extend across the top and bottom edges, thus entirely inclosing the strips 11 and 13, for the reason already described.

In Fig. 3 is shown a door provided-with a hole for the insertion of a panel. In order to facilitate the shaping of the hole, and the fastening in of the panel and also to stiffen the door, the strips 13 are shaped and arranged to conform to the outline of the panel, and these strips are glued in between the strips 11 so that when the latter strips and the sheathing 12 are trimmed to accommodate the panel, the edges of said strips 11 and 13 and the sheating 12 will be flush or even with each other. This arrangement of strips 11 around the panel also closes all holes between the other strips 13 that would otherwise be seen before puttin in the panel and the arrangement also acilitates the fastening in of the-panel by furnishing in the band formed by the strips 13 around the panel, a fastening for the panel or the molding holding the same in.

In the air space of each of the form of doors herein described, are mounted blocks 21 in or on which the lock is to be secured. These blocks may be built in at either or both sides of the door.

The doors can be veneered with Various kinds of wood, covered with burlap or other material, and they can be finished to match other doors, being veneered with the same kind of material.

From the foregoing it will be seen that I have provided a door which is light, strong and durable, and one which can be readily manufactured. It is obvious that the same construction can be used in panel work, table tops, and various kinds of woodwork, and variations in the form, proportions and minor details of construction may be resorted to without departing from the spirit or sacrificing any of the advantages of the invention.

What I claim is:

A door comprising a skeleton frame consisting of side and end strips rabbeted on opposlte sides, bracing strips extending perpendicular between the end strips, and having their outer surfaces flush with the rabbets, some of said bracing strips being cut away intermediate their ends to form the outline of a panel, border strips defining the outline of the panel, horizontal cross strips connecting the side strips, said cross strips fitting the outer surface of the bracing stri )S and the border strips, and a portion of said cross-strips being cut away to extend flush with the lnner edges of the border strips to conform to the outline of the panel, and

said cross strips fitting at their ends in the rabbets of the side strips, and a sheathing of veneer over the cross strips and the exposed surface of the end and side strips.

In testimony that I claim the foregoing as my own, I have hereto afiixed my signature in the presence of two witnesses.



Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2620521 *Jul 19, 1950Dec 9, 1952Fleet Stephen AlexanderFlush door
US3068536 *Feb 25, 1957Dec 18, 1962Ben Lieber PhilipLouvered doors
US3083745 *Nov 7, 1960Apr 2, 1963Seattle Door Co IncMethod of manufacturing panelled doors
US3165792 *Apr 3, 1961Jan 19, 1965Louis PickStructure for doors and the like
US4175313 *Apr 20, 1978Nov 27, 1979Neumann Paul GMethod and apparatus for manufacturing door frames
US5766774 *Nov 1, 1994Jun 16, 1998Masonite CorporationMolded core component
US5887402 *Jun 7, 1995Mar 30, 1999Masonite CorporationMethod of producing core component, and product thereof
US6764625Mar 6, 2002Jul 20, 2004Masonite CorporationMethod of producing core component, and product thereof
US6817158 *Dec 5, 2000Nov 16, 2004Heinrich IglsederLightweight construction board
US20030163972 *Dec 5, 2000Sep 4, 2003Peter AngenendtLightweight construction board
US20030168769 *Mar 6, 2002Sep 11, 2003Walsh John PeterMethod of producing core component, and product thereof
Cooperative ClassificationE06B3/7017