US546858A

US546858A - Rolling fireproof blind or partition

Info

Publication number: US546858A
Authority: US
Publication date: 1895-09-24
Anticipated expiration: 1912-09-24

Description

(No Model.)

W. R. KINNEAR.

ROLLING FIREPROOF BLIND 0N PARTITION. No. 546,858. Patented Sept. 24, 1895.

ANDREW EGHMMM, PHOTO LID1O.WASNINGTONID C.

PATENT WILLIAM R. KINNEAR, OF COLUMBUS, OHIO.

ROLLING FIREPROOF BLIND OR PARTITION.

SPECIFICATION forming part of Letters Patent No. 546,858, dated September 24, 1895.

Application filed June 4,1896. Serial No. 551,666- (No model.)

To aZZ whom it may concern.-

Be it known that I, WILLIAM R. KINNEAR, a citizen of the United States, residing at C0- lumbus, in the county of Franklin and State of Ohio, have invented certain new and useful Improvements in Rolling Fireproof Blinds or Partitions; 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 make an improvement upon the curtain shown in my application for Letters Patent of the United States filed April 6, 1895, Serial No. 544,711.

By my present invention I propose to strengthen and render more fireproof and durable the curtain heretofore invented by me; and my invention consists in making an improvedform of slat of double thicknesses of metal and providing an air-space between the body portions of the same.

My improvements also embrace a device to be placed and secured in the ends of alternate slats to prevent the movement of the slats longitudinally upon each other and to take the Wear on the edges otthe curtain, as well as to serve as a guide for the same as it is raised and lowered in its grooves at the sides of the window.

In the accompanying drawings, Figure 1 represents a vertical sectional view of a portion of the curtain partially wound on a roller. Fig. 2 is a sectional view of two of the slats on a larger scale. I Fig. 3 is a perspective view of a fraction of the curtain, showing the stop for preventing longitudinal movement of the slats. Fig. 4 is a perspective view of the stop.

Each of the slats of the curtain is composed of two pieces or folds of metal having their body portions rolled to have preferably substantially the curves shown at 1 and 2 and 1 and 2', and their edges lapped and bent to form the shoulders 3, grooves 4, and tongues 5, with a narrow slit 6 between the edge of the tongue and the shoulder, so that when one slat is slid longitudinally onto another an air-space, which is effective in preventing the passage of heat, and each part is braced and strengthened by the other I have shown the two parts composing the slat curved in the same directionthat is, practically parallel to each other-so that they may be more compactly rolled up on a roller; but Where the curtain is to be used asa partition they may be curved oppositely, as shown by the dotted lines in Fig. 2.

To prevent the slats from endwise movement upon each other I provide a short block 7, formed like that shown in Fig. 4, adapted to fit nicely in the end of the slat, and having a flange 8, projecting over the grooved part of the ends of the adjoining slats. This block has a small recess 9, into which the metal of the slat may be punched to hold it in place.

To strengthen as well as to ornament the slats they may be made with transverse ribs, as shown in Fig. 2.

The hollow spaces in the slats may be filled with asbestos or other non-combustible material.

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

1. A slat for rolling blinds or curtains formed of two thicknesses of metal bent to form a hollow air space between them and with a shoulder 3, and their edges lapped together and bent to form a single groove and a single tongue on each edge with a narrow slit between the edge of the tongue and shoulder 3, whereby a similarly constructed slat may be slid longitudinally into the groove and when so slid in shall be inseparable therefrom in a lateral direction, substantially as described.

2. A slat for rolling fire-proof curtains and the like composed of two thicknesses of metal having their edges lapped and bent to form the shoulders 3, grooves 4, and tongues 5, substantially as described.

3. A slat for fire-proof curtains and the like composed of two thicknesses of metal having their edges lappe'd and bent to form shoulders 3, grooves 4, tongues 5 and their body portions parallelly curved with an intermediate air space between them, substantially as described.

4. A curtain composed of hollow metallic slats connected by a hinge joint and a plug IOC secured in the ends of the slats having a projecting beyond the faces of the slats ,subflange adapted to engage the ends of a constantially as and for the purpose explained. IO

tiguous slat to prevent longitudinal move- In testimony whereof I affix my signature ment of the two with respect to each other, in presence of two witnesses. 5 substantially as described. WILLIAM R. KINNEAR.

5. A curtain composed of hollow metallic \Vitnesses: slats connected by a hinge joint, a plug se- A. J. SMART, cured in the ends of the slats, having flanges GEO. M. FINCKEL.