US747149A

US747149A - Metallic door.

Info

Publication number: US747149A
Application number: US13813403A
Authority: US
Inventors: Charles Dahlstrom
Original assignee: Individual
Current assignee: Individual
Priority date: 1903-01-07
Filing date: 1903-01-07
Publication date: 1903-12-15
Anticipated expiration: 1920-12-15

Description

110.747.149. PATENTED DEC. 15', 1903. C. DAHLSTROM. METALLIC DOOR.

APPLICATION FILED JAN, 7l 1903.

NO MODEL. A 2 SHEETS-SHEET l.4

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PATENTED DEG. 15, 1903.

C. DAHLSTROM.

METALLI@ DUUR.

APPLICATION FILED JAN, 7, 190s.

2 SHEETS-SHEET 2.

N0 MODEL.

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#Lneawed /Q/ ms Nonms versus co. Puorowmo., WASHINGTON, n. c,

llnirrnn Freres Patented December 15, 1903.

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METALLTEC DOO..

SPECIFICATION forming part of Letters Patent No. 747,149, dated` December 15, 190,3. i Application filed January 7, 1908. Serial No. 138,134. (No model.)

To rtf/Z whom, t W1/tyi concern:

Be it known that I, CHARLES DAHLsTRoM, a citizen of the United States, residing at Jamestown, in the county of Chautauqua and State ofNew York, have invented certain new and useful Improvements in Metallic Doors, of which the following is a specification.

My invention relates to metallic doorsgand the object thereof is to provide a compara-V tively inexpensive and exceedingly light but durable and rigid door which is air-tight and weatherproof.

Another object is to devise a door of this character which can be made ornamental, which is seamless on one side and in appearance can be made to resemble any of the common styles of panel-doors, and which, owing to its peculiar construction, is lireproof and sound-proof.

Anotherobject is to so construct my improved door that the large dies heretofore used in shaping the metal sheets for this` purpose are dispensed with and the sheets rolled 'into the proper shape with less power and greater facility, and consequently with less time and expense.

Other objects will be apparent from the detail description of t-heinvention which Will be presently given.

The invention consists of the new and novel construction of adoor formed of sheet metal and having an invisible seam or seams and which is constructed of two thicknesses.

of metal providing stiles, panels, and rails to resemble as near as may be any common panel-door constructed of wood. y

This invention is susceptible to many changes in form, size, andconnection of metal sheets or place of" connection of the saine, as Ido not wish to confine myself tothel exact construction and arrangement herein described, and shown in the accompanying drawings, but hold myself at liberty to make such changes as fairly lie within the scope of.

4e is a vertical section taken on line w w, Fig. 5. Fig. 5 is a horizontal section taken on line a: x, Fig. Il. Fig. 6 is an enlarged horizontal section taken on line y y, Fig. l. Fig. '7 is an enlarged horizontal section taken on line z e', Fig. l. Figs. 8, 9, lO, and ll are horizontal sections taken through the panels of doors, showing modified forms of my invention.

Referring to the drawings in detail, like numerals of reference refer to like parts in the several figures.

My improved door is formed in its preferred construction of two

metal sheets

1 and 2, both extending the full length of the door. The sheet lis provided centrally with a panel depression or formation 3, arranged to extend the fulllength thereof and havingitsdeflningwalls 4. ornamentally `formed to represent a molding. On opposite sides of the said panel depression or formation the sheet is bent at right angles to form the' side edges l5 of the door. Itis then bent inwardly or recurved, as at 6, to form the hollow Stiles? and is next arranged to form receding defining-Walls S, which represent moldings similar to those formed by the defining-walls 4 on the opposite side of the door, the edges of the sheet finally recurving or terminating in lips 9, ex#

tending into the hollow Stiles to form channels to interlock with the edges of the metal sheet 2, as will be presently described. The metal sheetl 2 cooperates with the depressed panel portion 3 of the sheet l to form the complete panel. The sheet 2 is of a width somewhat greater than the panel depression 3 and hasits edges recurved, as at 10, to form channels, which receive the lips 9 of the sheet l, thus forming vertical seams in the stile, which are invisible from the outside, .and providing a door having the appearance of being formed of seamless sheet metal. By means of this construction the panel. depres# sion 3 and ornamental defining-

walls

4 and 8, as well as the Stiles, can be rolled into the desired outline with ease and great facility and the sheet 2 conveniently connected thereto, the Whole forming an air-tight double `sheetmetal door through which neither smoke nor hot air can pass, as the one side thereof is roo formed in one integral piece without seam or crevice of any kind.

Between the metal sheet 2 and the depressed panel portion of the sheet 1 a fillingsheet 11 of asbestos or any other material of like nature is interposed, and in the hollow stiles ground asbestos or any other suitable material may be inserted to make the door absolutely fireproof and sound-proof. This filling need not necessarily be of a non-combustible nature, as other material combustible in the open air, but non-combustiblein an air-tight inclosure, has by experiment been found more satisfactory, as it is not so liable to act upon the steel and cause corro-` sion. i/Vhen a sound-proof door only is desired, any other suitable material may be If desired, the panel may be provided with moldings 15 to further ornament the same, and when used they are preferably riveted to the door, each rivet passing through both moldings and the

metal sheets

1 and 2. These moldings tie the two sheets together and prevent vibration of the same, particularly on wide doors.

The upper and lower rails 16 17, respectively, are each formed of a single sheet of metal bent upon itself to form a channeled member, having its sides 18 separated to correspond with the thickness ofthe stiles, and thus present an even surface therewith. The horizontal portions 19 of the rails are provided with extensions 2O 21, which bear against the open upper and lower ends of the stiles, respectively. The sides of these rails are of a length to snugly fit between the stiles, and the upper ends are made to recede andform the upper and lower ornamental defining-walls 22 23, respectively, of the panel. These defining-walls terminate in recurved lips 24, separated by a space 25, corresponding to thel thickness ofthe panel, thus providing a suitable bearing for the rails against said panel. At regular intervals separators 2b' are provided between the side walls and the recurved. lips of the rails, and passing through said separators, the sides and recurved lips of the rails, and the panel are rivets 27, which securely tie the parts together and greatly stiffen the door at this point.

The upper and lower ornamental definingwalls of the panel are fitted to the side defining-

walls

4 and 8, and the recurved lips of the rails 16 17 are somewhat shorter than the sides thereof, so as to fit the narrowest space between the side defining-walls to permit of bearing firmly against the panel.

The hollow rails are also filled with ground asbestos or other suitable material. If desired, the rails may be brazed, welded, or otherwise secured to the

metal sheets

1 and 2, forming the body of the door, and the rivets dispensed with; but I find the riveting of the parts, in addition to welding the abutting edges, to be the most satisfactory.

The defining-walls of the panel by being offset and curved greatly stiffen the door and permits the use of a much lighter grade of metal without effecting the rigidity of the door, which would otherwise be impossible. Any desired number of moldings or intermediate rails may be secured to the panel to produce any desired design; but such is not necessary in a door of this type, as it would unnecessarily increase its weight.

In the modification shown in Fig. 8 the stiles and panel of the door or, in other words, the body of the door is also formed of two sheets of metal 28 29, each sheet forming a stile 30 and one side of the panel 31. One edge of each sheet is recurved to form a channel and terminates in a lip 32 at the inner edge of the stile forming part thereof, and the other end thereof terminates in a recurved portion forming a channel 33, in which the adjacent lip of the connecting-sheet is secured.

In thel modication shown in Fig. 9 the stiles and panel forming the body of the door are formed of a single sheet of metal arranged to have one edge thereof recurved to forma channel and terminate in a lip 34 at the inner edge of one stile to extend into the same and its other edge recurved to form a channel 35 at the junction of the panel with said stile, the said lip being secured in the channel 35 to form a seam invisible from the outside of the door.

In the modification shown in Fig. 10 the panel and stiles forming the body of the door are formed of two sheets of metal. The edges of the panel portion 36 on one side of the door is doubled upon itself, as at 37, and then recurved, as at 38, and carried laterally and directed to form the stiles, which are provided at their inner edges with a channeled portion 39, formed at the edges of the sheet, said channeled portion receiving the doubled portions 37 of the panel portion 36 and also the edges of the panel portion 40, forming,r the other side of the panel, thus securely holding the two sides of the panel together.

In the modification shown in Fig. 11 the stiles and panel are also formed of two sheets of metal. The stiles and one side of the panel are constructed of one sheet and the other side ofthe panel is formed of the other sheet. The edges of one panel portion 41 are recurved, as at 42, to form channels and then carried laterally and outwardly to form the ornamental defining-wall 43 of the panel and IOO IIO

finally directed to form the hollow stiles. The edges of the sheet terminate in channels 44 of a size sufficiently large to receive the channeled edges of the panel portion 41. The metal sheet forming the opposite panel portion 45 has its edges secured in the channeled edges of the panel portion 4l.

By preference a sheet of asbestos or other suitable material is interposed between the two panel portions in each modified construction.

Having thus described my invention, what I claim is- 1. A door formed of sheet metal and having one sheet provided with a panel formation serving as one side of the panel and having its sides recurved to form the stiles of the door and its edges oppositely recurved to form channels, and another sheet forming the other side of the panel and having its edges recurved to interlock with the recurved edges of the first-mentioned sheet.

2. A door formed of sheet metal and having one sheet provided with a panel formation serving as one side of the panel and being recurved on opposite sides of the panel formation to form the stiles of the door, and another sheet forming the other side of the panel and having its side edges connected with the side edges of the first-mentioned sheet.

3. A door formed of sheet metal and'having one sheet provided with a panel formation serving as one side of the panel and being recurved on opposite sides of said panel formation to form the stiles of the door, a second sheet forming the other side of the panel and having its side edges connected with the side edges of the first-mentioned sheet, and a third and forth sheet forming the upper and lower rails of the door, respectively, said lastrnentioned sheets being doubled upon themselves to form channeled rails into which the upper and lower ends of the panel are fitted.

4. A door formed of sheet metal having a panel, and stiles bounding the sides of the panel, the edges of the metal sheets forming said panel and stiles being connected at the junction of the two, andl end rails each formed of a separate sheet of metal bent upon itself to form a channeled rail into which the ends of the first-mentioned metal Vsheets are fitted, said last-mentioned sheets forming the end rails bounding the upper and lower ends of the panel.

5. A door formed of sheet metal having a panel, and stiles bounding the sides of said panel, the edges of the metal sheets forming said panel and stiles being connected at the junction of the two, end rails each formed of a separate metal sheet bent upon itself to form a channel and having the edges of the sheet recurved parallelwith the sides of the channel between which the panel is'fitted, separators between the side walls of the channeled rails and the recurved edges thereof, and rivets passing through the rails, separators and the panel to securely fix the rails to the latter.

6. A door formed of sheet metal and having its side walls connected by an edge wall, and a reinforcing-strip secured to the inner face of the edge wall, said edge wall being provided with an aperture to permit the doorhinge to be secured to said reinforcing-strip.

7. A door formed of sheet metal bent upon itself to form edge walls and having its side walls separated, and a reinforcing-strip secured to the inner face of the edge wall, the latter having a perforation exposing said reinforcing-strip to permit the door-hinge to be secured thereto.

8. A door formed of sheet metal bent upon itself to form hollow stiles and panel formations on opposite sides of the door, said panel formations beingseparated slightly and at least one of said panel formations .being formed integrally with the stiles, and a filling sheet or lining interposed between said panel formations.

9. A door formed of sheet metal comprising one sheet forming the stiles and one side of the panel, a second sheet serving as the other side of the panel and having connection with the first-mentioned sheet by a vertical seam at the junction of the stiles to said panel, and a sheet of asbestos interposed between the two walls of the panel.

lO. A double sheet-metal panel-door having its stiles and one side of the panel made seamless and having an invisible interlocking seam at the junction of one stile with the other side of the panel.

ll. A double sheet-metal panel-door having hollow stiles and the edges of the metal sheet or sheets forming the door, provided IOO with channeled edges interlocked on the inside of the hollow stile or stiles.

l2. A double sheet-metal'door having the edges of the metal sheet or sheets forming the same connected by an invisible interlocking seam.

13. A door formed of sheet metal and having one sheet arranged to form one side, the edges, and a portion of the other side of the door, and asecond sheet forming the remaining portion of the last-mentioned side of the door, both sheets having interlocking channeled or recurved edges.

14. A double sheet-metal door having two sheets of metal forming a panel and stiles on opposite sides of the panel, said sheets having interlocking channeled or recurved edges connected at the point of meeting of the stiles with the panel on one side of the door.

l5. A double sheet-metal door constructed to form hollow stiles and two opposing panel portions, the door having a vertical seam on one side at the junction of one panel portion with the adjacent hollow stile.

16. A double sheet-metal door comprising IIO a sheet of metal extending the full length and In testimony whereof I have hereuntoA afthe full Width thereof to form one side and fixed my signature in the presence of two subxo having recurved side marginal portions formscribing Witnesses. ing a portion of the other side of the door, and 5 a second metal sheet extending the full length l CHARLES DAHLSTROM of the door and being secured by means of Witnesses: invisible interlocking seams to the edges of ALFRED L. FURLOW, the first-mentioned sheet. CLEMENT B. JONES.