US287880A

US287880A - Fire-escape

Info

Publication number: US287880A
Authority: US
Publication date: 1883-11-06
Anticipated expiration: 1900-11-06

Description

UNITED STATES PATENT OFFICE.

HENRY SMALL, OF HARTFORD, CONNECTICUT.

Fl RE-EscAPE.

SPECIFICATION forming part of Letters Patent No. 287,850, dated NovemberG, 1883.

' Application filed February 26,1883. (No model.)

To all whom it may concern:

Be it known that I, 'HENRY SMALL, of Hartford, in the county of Hartford and State of Connecticut, have invented certain new and useful Improvements in Fire-Escapes, of which the following is a description, reference being had to the accompanying drawings, where Figure l is aview in elevation of abuilding provided with my device, part of the wall being cut away to show the interior of the shaft. Fig.2 is a view of same in vertical section or plane denoted by line a a: of Fig. 1. Fig. 3 is a view of the shaft in horizontal section on plane 3 y of Fig. 2. I

1 My invention relates to the class of fire-escapes designed to be permanent features of a building, formed when the building is first erected, or built in afterward.

It consists of a vertical flue of fire-proof material provided with a fixed ladder, doors as a means of access from rooms adjacent to the flue, and a door on the street-level opening outward from the inclined bottom of the shaft or flue.

In the accompanying drawings,the letter a denotes a building; b,c, and d, rooms adjacent to the hollow shaft or flue 6, built preferably with air-spaces c in the walls as non-conductors of heat;- f, a ladder, as of viron, firmly se cured to the inner side of the flue on the wall opposite the doors I) c, which open inwardly to the rooms' The ladder is so fastened to the wall as to leave its sides free of obstructions to the hands of aperson descending it.

The outer walls of the shaft are provided with windows of heavy glass, to light up the inside, and one or more ventillators are placed in the inner wall communicating with the rooms. At the bottom 9 of the shaft the rear 4 having on the under side a cam-lug, h, so ar- I ranged as to press against a reverse earn, a, fast to the spring-latch j, attached to the door.

When any pressure-es the weight of a personis thrown upon this flap, it forces it down, draws back the spring-latch, and unlocks and throws open the door, the inclined way aiding in the exit of the'person from the shaft. 7 The doors fromxthe rooms to the shaft are provided with looks or latches that can be operated from the rooms only, and not from the shaft. Gong-bells are placed in each room,

near the door to the shaft, which door is plainly marked Fire Escape. {I claim as my invention- LA vertical shaft or flue, e, having airspaces 6, or their equivalents, formed in the walls, the vertical laddenf, secured to the inner face of the flue, entrance-doors b 0 inclined bottom and automatic outlet-door It, all sub stantially as described.

2. In a fire-escape consisting of a shaft or flue, 6, having an inclined bottom, 9, a door,

it, having a hinged flap, h, and spring-bolt j,

whereby the door is opened, substantially as described. p p

3. In combination, door it, bearing sprin bolt j, with cam c, and hinged flap h, having 'cam-lugh, all substantially as described.

HENRY SMALL. Witnesses:

C. L. BURDETT, WM. H. MARSH.