US1104101A

US1104101A - Safety-bar.

Info

Publication number: US1104101A
Application number: US78015613A
Authority: US
Inventors: Lewis A Brown
Original assignee: Individual
Current assignee: Individual
Priority date: 1913-07-21
Filing date: 1913-07-21
Publication date: 1914-07-21
Anticipated expiration: 1931-07-21

Description

L. A. BRGWN. SAFETY BAR. APPLIUATION FILED JULY 21,1913.

1 1 O4, 1 O l Patented July 21,1914. l

d Q/'f nl: Nomzls FsrERs crd., wAsmNaraN. nA cA UNITED STATES LEWIS A. BROWN',l OF HORINE, MISSOURI.

SAFETY-BAR.

Specification of Letters Patent. i Patented July 21, 11914:.

Application led July 21, 1913. Serial No. 780,156.

To all 'whom it may concern:

Be it known that I, LEWIS A. BROWN, a citizen of the United States, residing at the city of Horine, State of Missouri, haveinvented a new and vuseful v'Safety-Bar, of which the following is a specification.

This invention relates to safety bars adapted for use in Window orv door openings, and it consists of one or more bars of the tubular type equipped with sound intensifying devices whereby any attempt to cut or saw the bar will result in an audible signal, and attention thereby attracted.

An object of the invention is to provide' therein. Fig. 2 is an enlarged sectional view of one of the bars in connection with a cross bar illustrating the interlaced arrangement of the elements mounted in the bars, and also illustrating the connections for holding the elements in proper position.

Fig. 3 is a transverse sectional view on the line 3 3 of Fig. 2.

In the embodiment illustrated in Fig. 1 the vertical bars l are composed of a number of separate sections, andthe transverse bars 2 are also composed of a number of separate sections. The several vertical and transverse sections are united by suitable fittings 8, and the ends of the outer sections are embedded within the wall structure 4, thereby preventing removal of any parts of the several bars. Within each vertical bar there is a number of thin metallic strips,

to a member 7 movably vsupported within the Vbar and provided with a centrally threaded hole. A bearing block 8 mounted against the end of the bar, supports a bolt 9 which isrevolubly mounted in a hole in said block 8 and which screws into the threaded hole in the member 7. The end of the bolt 9 is provided with a head 10 whereby the bolt may be manipulated to draw the member 7 and stretch the radial plates 5. Since the member 6 and the bearing block 8 are against the ends of the vertical tubular bars the said member 6 and block 8 are embedded in the wall structure and are, therefore, inaccessible after the bars are mounted in position.

The transverse bars 2 are of similar construct-ion7 and contain the' radial plates 11 arranged and stretched just like the radial plates 5 are arranged and stretched. Attheir points of intersection the radial plates 5 and the radial plates 11 are interlaced, so that each radial plate 5 is in cont-act with each one of the radial plates 11, and each of the radial plates 11 is in Contact with each of the radial plates 5. Thus the vibration resulting from any eortto cut or saw any one of the radial plates will be transmitted to every other radial plate.

\ As previously explained and as illustrated in Fig. 3 'the radial plates 5 and the radial plates 1l are of thin sheet metal having their outer edges close to but out of contact with the inner surfaces of the tubular bars. Therefore, when an attempt is made to cut or saw the tubular bars the edge of the saw or cutting implement will engage with and vibrate the radial plates, resulting in a noise which will be audible to a person at a considerable distance from the place in which the bars are mounted. In Fig. 3 I have, for purposes of convenience, illustrated four radial plates within the tubular bar, but this illustration is for purposes of convenience only and it may be found preferable in some instances to utilize a greater number of said plates in each tubular bar. I contemplate the employment of a greater number when needed, and I do not restrict myself to any specic number nor to other specific features illustrated in the present embodiment of my invention.

Vhat I claim and desire to secure by Letters Patent of the United States is:

1. A safety bar comprising a tubular bar, a plurality of radial metallic plates Within said bar, and means for stretching and holding said plates, substantially as specified.

2. The combination with a series of intersecting tubular bars, of a series of radial metallic plates mounted in said bars and also being in intersecting arrangement, and means for stretching and holding said plates, substantially as specified.

3. The combination with a tubular bar, a series of radial metallic plates mounted in said bar having their outer edges close to and out of Contact With the Wall of said bar, and means for stretching and holding said plates in the position and adjustment aforesaid, substantially as specified.

t. The combination With a tubular bar, a series of radial metallic plates mounted in said bar having their outer edges close to and out-.of contact With the Wall of said bar, and manipulative means for stretching and holding said plates in the posit-ion and adjustment aforesaid, substantially as specified. In Witness whereof, I have signed this specification in the presence ot' two subscribing Witnesses.

LEWIS A. BROWN.

VVit-nesses:

R. M. LAWRENCE., J. D. RIPPEY.

Gopes of this patent may be obtained for five cents each, by addressing the Gommissioner of Eatents, Washington, D. 6.