US546857A

US546857A - Fireproof shutter

Info

Publication number: US546857A
Authority: US
Publication date: 1895-09-24
Anticipated expiration: 1912-09-24

Description

(No Model.)

W. R. KINNEAR. PIREPROOF SHUTTER.

Patented Sept. 2,4, 1895.

ANDREW B GRMMM,PHUYOUTHQWASHINGYCN DC rra a'rnnr einen.

I/VILLIAM R. KINNEAR, OF COLUMBUS, OHIO.

FIRPROOF SHUTTQER.

SPECIFICATION forming part of Letters Patent No. 546,857, dated September 24, 1895.

Application filed December '7, 1894. Serial No. 531,119. (No model.)

.To a/ZZ whom it may coi/acera.-

Be it known that I, WILLIAM R. KINNEAR, a citizen of the United States, residing at Oolumbus, in the county of Franklin and State of Ohio, have invented certain new and useful Improvements in Fireproof Shutters; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

The object of my invention is to provide improvements in the construction of reproof shutters, doors, and the like. It is desirable that such shutters, doors, and the like be as light as possible, and to attain this it is essential to employ more or less wood 0r other light material in the construction of the frames. This frame is protected from combustion by a sheathing of sheet metal, and to prevent the opening of the seams from warping of the metal, due to the contraction and expansion thereof, and especially when exposed to violent heat, is the chief object of my present invention. This feature, as well as the remaining features of my invention, are illustrated in the accompanying drawings, in which-- Figure 1 illustrates in elevation a part of a shutter, a portion of the panel beingbroken away to illustrate the interior construction. Fig. 2 is a sectional view taken on line @cof Fig. l. Fig. 3 is a sectional view on the line y y of Fig. 1. Fig. 4 illustrates a sectional view on a larger scale to better illustrate the details of the chief feature of my improvements.

The character 1 designates the Wooden frame, which is of the usual rectangular form and is made with a saw kerf or groove 2 at its inner side. In this groove I place a strip of metal 3, preferably hard. A sheathing of metal 4 covers the frame and is secured thereto by nails driven into the wood and against the metal strip, so that their points shall be turned aside and thereby clinched.

The cross-pieces 8, extending between the vertical sides of the shutter-frame, are preferably composed of two pieces of wood with a metal clinching-strip 3 laid between them. In order to protect these cross-pieces against charrin g or combustion, they are covered with a protective sheathing of metal, as shown. The panels 5, of proper contour and orna mented with any suitable design, are next secured to the frame, their edges being held by nails 6, driven into the wood and against the metal strip 3 and clinched, as shown.

In order to render the shutters or doors more perfectly fireproof, I propose to ll the space between the panels with asbestos or other poor conductor of heat or with some non-combustible material. This material may be retained in position by a number of zigzaged strips of metal 9, laid vertically within the space, as shown. To prevent the panels from bulging when exposed to heat, I employ a number of rivets IO, secured between them at proper intervals. These rivets also assist in retaining the asbestos in position. The metal nail-clinching strip is also employed at the miter-joints of the frame, as indicated at the corners of the frame.

It will be seen that the present improve ments secure lightness, durability, and tireproofness without any sacrilice of comeliness inthe appearance of shutters, doors, and similar structures.

What I claim, and desire to secure by Letters Patent, is-

I. In fire-proof shutters and the like, a frame, panels secured to said frame, a tireproof packing in the space between said panels, with devices substantially as described for retaining said packing in position.

2. In fire-proof shutters and the like, a frame, panels secured to said frame, a tlreproof packing in the space between said panels, devices for retaining said packing in position, and rivets uniting the panels, substantially as shown.

3. A body of wood or similar material, a hard strip placed within said material, a sheathing secured to said material by a nail having its end clinched or turned by said hard stri hp In fireproof shutters and the like, a frame of wood or other material having embedded therein a nail clinching strip, a protective sheathing covering said frame, and panels secured to said frame by nails clinched by the clinching strip, substantially as shown and described.

In testimony whereof I afiiX my signature in presence of two witnesses.

WILLIAM R. KINNEAR. Witnesses:

GEORGE. M. FNoKEL, CHARLES FRANK.