US1176607A - Fire-escape. - Google Patents

Description

N. E. SCHOONOVER.

FIRE ESCAPE.

APPLICATION FILED JAN-29.1914. 1,176,607. Patented Mar. 21, 1916.

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N. E. SCHOONOVER.

FIRE ESCAPE.

APPLICATION FILED JAN. 29. 1914. 1,176,607. Patented Mar. 21,1916.

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TO ED. I/IORCK AND ONE-FOURTH TO W. J.

DAKOTA.

NORTH DAKOTA. ASSIGNOR OF ONE-FOURTH MACKIN, BCTH OF MANDAN, NOR-TH FIRE-ESCAPE.

Specification of Letters Patent.

Patented Mar. 21, 1916.

Application filed January 29, 1914. Serial No. 815,223.

To all "whom it may concern:

30 it known that I. NOAH ELI Scnooxovnn. a citizen of the United States. residing at Fort llice. in the county of Morton, State of Forth Dakota, have invented certain new and useful Improvements in Fire- Flscapes; 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.

This invention relates to new and useful improvements in lire escapes and particularly that class comprising a movable carrier and brake means for regulating the mo ement of the carrier.

The obiect of the present invention rcsides in the provision of a fire escape comprising a movable carrier and brake means associated therewith which act to regulate the movement of the carrier and which are operated by weight being placed on the carrier, so that the carrier will move at a uniform rate of speed regardless of the weight thereon.

A further object of the invention is to provide such a device which is etlicient and durable in operation and which is so designed that it may be installed readily and at a low cost.

With these and other obiects and advantages in view the invention resides in the novel combination. formation and arrangement of parts to be hereinafter described and illustrated in the accompanying drawings and particularly pointed out in the claim hereto appended.

Reference is had to the accompanying drawings wherein similar characters of reference designate corresponding parts throughout the several views and in which:

Figure l is a side elevational view of the improved device. Fig. 2 is an end elevational view thereof. Fig. 3 is a top plan view of the device. Fig. 4 is a detail sectional view on the line 4 r of Fig. 2. Fig. 5 is a sectional view on the line 5 5 of Fig. 1. Fig. 6 is a perspective view of one of the sliding blocks. Fig. 7 is a perspective view of the brake bar, and Fig. 8 is a sectional view on the line 88, Fig. 1.

Referring now more particularly to the drawings. a pair of upper side members 5 are secured in spaced parallel relation to the building at the highest portion thereof to which it is desired to extend the fire escape and a pair of lower side members (3 are secured to the lower portion of the building and in spaced parallel relation, each of the side members 6 being disposed directly under one of the side members The respective members may be integrally connected as shown.

Journal blocks T are provided for the upper shaft 8 around which the movable carrier is trained and journal blocks 9 are provided for the lower shaft 10 around which the carrier is also trained. These blocks are slidable in slots 11 formed vertically in the side members and the blocks are held against late al displaceinent from the side members by horizontal flanges 12 and formed on the sides of the said blocks. Each of the shafts is provided inwardly of the side members with a, pair of spaced sprocket wheels 13 fixed thereto and sprocket chains ll are trained over the wheels. Certain spaced links of the chain are provided with outwardly extending lugs 15 and to these lugs are bolted or otherwise secured the platforms 16 on which the persons using the escape stand. To provide additional supports for the platform, guide rods 17 are provided having inwardly extending arms which are secured to the ends of certain links disposed adjacent the links carrying the lugs 15. and brace rods 18 are pivotally secured to the outer end portions of the platform and have slidable engagement with the rod 17. From the foregoing construction it is seen that the brace rods are so mounted that they may be freely moved around the sprocket wheels 13. The sprocket chains and platforms above-described thus form the movable carrier of the escape. To prevent persons from becoming frightened by looking outwardly and down .vardly when traveling on this movable carrier. a cloth or other flexible band 18' is disposed between and secured to the sprocket chains.

The brake means for controlling the movement of the carrier when weight is placed thereon comprises in part levers 19 pivoted intermediate their ends to the outer faces of the upper side members and have their inner ends reduced and extended over the journal blocks 7. the ends of the upper shaft 8 being extended outwardly of the blocks and slidable in slots '20 formed in said inner ends. The ends of the lower shaft 10 are also extended outwardly of its bearing blocks and have fixed thereto brake wheels 21. Brake beams 22 are pivoted to the outer faces of the lower side members and are provided with cutaway portions 23 which engage the brake wheels. A connecting rod 24 extends from the free end of each brake beam and has pivotal connection with a short rod 24: slidably passed through the outer end of each lever 19. It is seen that when a person steps on the platform, his weight will pull the bearing blocks 7 downwardly and thus rock the levers 19 to cause the brake beams to engage the brake wheels and check the rotation of the shaft 10 and thus the downward movement of the platform.

A tightening nut is threaded on the end of each rod 24' and serves to adjust the distance between each brake beam and its lever 19. To adjust the tension of the sprocket chains, a screw 26 is threaded vertically in the lower side members 6 and bears against the blocks 9 to move the lower shaft 10, around which the chains are trained.

What is claimed is A fire escape comprising a resilient supporting shaft, a lower journaled shaft, a carrier trained around said shafts and engaging the lower to rotate the same, a brake wheel fixed on the lower shaft, a brake beam engageable with said wheel, a lever intermediatelw pivoted and having one end engaged with the first mentioned shaft to be rocked upon movement thereof, and a connection between the other end of the lever and the brake beam for actuating the same. In testimony whereof, I atlix my signature, in the presence of two witnesses.

NOA H ELI SGHOONUVER. Witnesses:

F. \V. Soiiitnnrniin, \V. J. MAOKIN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C.

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