US504576A

US504576A - Fire-escape

Info

Publication number: US504576A
Authority: US
Publication date: 1893-09-05
Anticipated expiration: 1910-09-05

Description

2 Sheets-Sheet 1.

(No Model.)

Jl L. GREGORY.

HRB ESGAPB.

6 n 2 ,.v/ N .MM 5 1 N a (No Model.) 2 Sheets-Sheet 2. J. L. GREGORY.

FIRE ESCAPE.

N0. 504,576. Patented Sept. 5, 1893.

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JAMES LEE GREGORY, OF WASHOE CITY, NEVADA.

FIRE-ESCAPE.

SPECIFICATION forming part of Letters Patent No. 504,57 6, dated September 5, 1893.

Application led November 26, 1892. Serial No. 453,216. (No model.)

I a/ZZ whom it may concern:

Be it known that I, JAMES LEE GREGORY, of lVashoe City, in the county of Washoe and State of Nevada, have invented certain new and useful Improvements in Fire-Escapes; and l do hereby declare the following to bea 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.

My invention is an improvement in lire escapes designed for greater simplicity of construction and certainty of operation andA by the use of which persons on any floor of a burning building can be easily rescued by the help of those on the street.

A further object of my invention is that it can be instantly adjusted, and by` its manner of construction, it is impossible for accidents to occur while the occupants of the building are being rescued.

I Other objects and advantages of the invention will appear in the following description in which l have set forth fully the details of construction and the essential features thereof and illustrated them in the accompanying drawings in which similar letters of reference designate corresponding parts.

Figure l is a side elevation of my invention attached to a building. Fig. 2 is a front elevation of the same. Fig. 3 is a section through the line a: .fc Fig. l. Fig. et is a section through the line yy Fig. l. Fig. 5 is a section through the line .e Fig. 2, and Figs. 6 and 7 are details.

Secured to the upper part of the building l by suitable secure means is the projecting frame work 2 which is intended to support the bearings 3 for the rollers 4. over the latter of which pass the ascending and descending cables 5 which support the cage 6.

J ust above the side-walk and secured to the building in a position directly beneath the frame-work 2 is the casing 7 through the center of which passes the shaft 8 to the middle of which is secured the drums 9 about which the ends of the cables 5 are wound.

To prevent the cage 6 from swinging outward from the building I have supplied the guides or tracks l0 which extend the whole height of the building, and which are adapted to receive the guides ll which are in turn secured to the cage 6.

At both sides of the central drums 9 and about the shaft 8 are situated aseries of spiral springs l2 one end of each of which is secured to the shaft While the other end is secured to a stationary part of the outer casing 7. The cables 5 are wound about the central drums 9 in such a manner that when the cage 6 descends the spiral springs l2 are wound up and consequently when the cage ascends the springs are unwound. It will be readily seen that after the cage has descended with several occupants, the power accumulated in the springs will be amply sufficient to raise the empty cage to the required height.

l do not desire to confine myself to any particular number of springs encircling the shaft 8 as the number is regulated by the weight of the cage and when it is desired that a person should ascend to a particular story, the number of springs desired to raise this added weight will be necessarily increased.

To regulate the rapidity of descent of the cage and to stop the cage at any desired story of the building, I have constructed two secondary drums 13 one on either side of the central drums 9, and over which pass the steel bands le, shown in Fig. 7, one end of each of which is secured to the casing 7, while through the other end passes the binding screw l5, the threaded end of Which passes through the casing 7 while its other end terminates in the wheel16. It will be readily seen that when the end of the band I4 is forced toward the casing 7, thereby increasing'. the friction between the band and drum the rapidity of descent of the cage is decreased.

As will be seen from the accompanying drawings, l have constructed the shaft 8 in three sections, united by means of the serrated sleeves 17 which are secured to the ends of the sections. At the ends of the casing 7 are pivoted levers 1S one end of which terminates in a fork one prong of Which passes over While the other passes under a anged sleeve 19 secured to the shaft 8.

Vhen it is desired to disengage from the central drums the power of the springs on IOO either or both sides, the levers at the end of the casing are moved toward each other, thereby disengagingfrom each other the serrated sleeves 17, and allowing the drums 9 to revolve independent of thesprings l2.

In order to impart to the springs the necessary tension or coil I have supplied the crank 2O which is adapted to engage with the projecting end of the shaft 8, whichY is locked in the required position and thereby prevented from revolving by means of the cog Wheel 2l and sliding locks 22 Which are situated in suitable supports at the end of the casing 7.

The cage 6 which is constructed of a net Work of Wire or other suitable material is lined with a non-combustible material such as mica, and to prevent the flames issuing from the Windows of the building, from entering the cage I have supplied the

doors

23 and 24 shown in Fig. 6.

The construction and arrangement of the several parts of my re escape being thusV made known, the operation and advantages of the same will it is thought be readily understood.

I am aware that changes in the formand proportion of parts ofthe devices herein shown and described as an embodiment of my invention can be made Without departing from the spirit or sacrificing the advantages thereof, and I therefore reserve the right to make such changes and alterations as fairly fall Within the scope of my invention.

Having thus fully described my invention, what I claim, and desire to secure by Letters Patent, is-

1. A tire escape consisting of a cage, one or more cables secured to said cage and passing over suitable pulleys or rollers situated in a 1 suitable support secured to a building at a` point above the top window thereof, the other ends of said cables being Wound about one or v more drums secured to a sectional shaft having bearings in a frame work secured to said building near the base thereof, said shaft being encircled by one or more spiral springsl substantially as and for the purpose set forth.

2. A fire escape consisting of a cage, one or more cables secured to said cage and passing over pulleys or rollers situated in a suitable support secured to a building at a point near the top thereof, the other ends of said cables being Wound about one or more drums secured to a sectional shaft having bearings in a frame Work secured to said building near the base thereof, said shaft being connected to one or more spiral springs which encircle it, and means for regulating the speed of revolution of said shaft, said means consisting of one or more bands of metal passing partly around one or more drums secured to said shaft and means for regulating the amount of friction between said bands and said drums substantially as and for the purpose set forth.

3. A fire escape consisting of a. cage, one or more cables secured to said cage and passing over pulleys or rollers situated in a suitable support near the top of a building, the other ends of said cables being wound aboutone or more drums secured to a shaft having bearings in a frame work secured to said building near the base thereof and directly beneath the support for said pulleys, said shaft being formed in sections and having means for moving the end sections-connected to one or more spiral springs which encircle it, parallel guides secured to said building and extending upward from said frame work to said support and projections-on said cage adapted to slide in said guides substantially as and for the purpose set forth.

4. A`fire escape consisting of a lcage lined with a non-combustible material, one or more cables secured to said cage and passing over pulleys situated in a suitable support near the top of a building, the other ends of said cables being Wound about one or more drums secured to a shaft having bearings in a frame Work secured to said building near the base thereof, said shaft being connected to one or more spiral springs which encircle it, said shaft being formed in three sections, a serrated sleeve secured to each end of said sections and means for causing the end sections y to move toward or Vfrom said central section substantially as and for the purpose set forth. 5. A tire escape consisting of a fire proof cage, one or more cables secured to said cage and passing over pulleys having bearings in a suitable support near the top of a building, the other ends of said cables being Wound about one or more drums secured to a shaft having bearings in a frame Work secured to said building near the base thereof, said shaft being composed of three sections the central section bearing said drums and the end sections being secured to and encircled by one or more springs and means for connecting and disconnecting said end sections with and from said central section, a locking Wheel secured to one end of one of said end sections and a lock adapted to engage with the teeth of said locking Wheel, and a crank adapted to t ou a projecting end of one of said end sections substantially as and for the purpose set forth.

In testimony whereof I have signed this specification inthe presence of two subscribing Witnesses.

JAMES LEE GREGORY. Witnesses:

T. N. MARKER, F. M. LEE.