US626327A

US626327A - kirkaldy

Info

Publication number: US626327A
Authority: US
Publication date: 1899-06-06
Anticipated expiration: 1916-06-06

Description

No. 626,327. Patented June 6, I899. W. KIRKALDY;

REVOLVING OYLINDRIOAL BULKHEAD DOOR.

(Application filed. Apr. 16, 1896.)

(No Model.) 2 Shouts-Shoot I.

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REVOLVING CYLINDRIGAL BULKHEAD DOOR.

implication filed Apr. 18, 1896.)

2 Sheats-Sheet 2.

(No Model.)

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N'rnn STATES ATENT FFICE.

REVOLVING CYLINDRICAL BULKHEAD-DOOR SPECIFICATION forming part or Letters Patent No. 626,327, dated June 6, 1899. Application filed April16,1896. Serial No. 5873 823. (No model.)

To all 1011,0772, it may concern:

Be it known that 1, WILLIAM KIRKALDY, a British subject, residing at 16 Derby street, in the city and county of Glasgow, Scotland, have invented a new and useful Revolving Cylindrical Door, (for which I have received Letters Patent in Great Britain, No. 18,923, dated October 9, 1895,) of which the following is a specification.

My invention has for its aim and object the saving of life and property on land and at sea by providing a hollow cylindrical door which revolves within a suitable casing fixed to or forming part of an air-tight, water-tight, or fireproof bulkhead or partition dividing air and water tight compartments or fireproof rooms and the like. By combining this revolving cylindrical door and easing as hereinafter described a double door and air-lock is formed, which effectually prevents the ingress of fire, water, or air under pressure through air-tight, water-tight, or fireproof bulkheads or partitions in ships, caissons, tunnels, structures, and the like, yet on being revolved allows free thoroughfare between compartments or rooms so divided, with the certainty that at all times and under all conditions one of the doors must be absolutely 'closed before the other door is open, thus guaranteeing that the bulkhead or partition is intact and thoroughly reliable in the event of a sudden disaster. I attain this object by the combination herein described, and illustrated in the accompanying drawings, in which- Figure 1 is a vertical section of the casing and revolving cylindrical door; Fig. 2, a horizontal section of the casing and revolving cylindrical door; Fig. 3, a top View of easing.

Similar letters refer to similar parts throughout the several views.

The casing A, as shown on Figs. 1 and 2, is a hollow cylinder with a plain or corrugated surface and furnished with two or more doorways G O in its circumference, close bottom and bolted on cover F, and external flanges for fixing to bulkheads or partitions.

W'it-hin casing A, revolving on an overhead axial pin E or in other suitable manner, is the revolving cylindrical door 13, which is a hollow cylinder with a plain or corrugated surface and having essentially a doorway D in its circumference, an open end, and handles I 1 inside and hand-recesses ll outside Then doorways O and D in casing A and cylindrical door B are in line, as shown on Figs. 1 and 2, free passage through bulkhead or partition is gained by entering and standing inside of easing A and revolving the cylindrical door 13 by means of the handles H, when the ingress-door C is absolutely closed before the doorway D comes in line with doorway O to allow egress from casing A. To pass through bulkhead or partition when the door 0 is closed, as shown in Fig. 2, insert hands into hand-recesses II and revolve cylindrical door B until the doorway D comes in line with doorway G. Then enter and stand inside of casing A and revolve the cylindrical door B by means of handles H, when the ingress-door O is absolutely closed before the doorway D comes in line with doorway O to allow egress from casing A. Moreover, it is essential that the cylindrical door should be capable of revolving instantaneously when operated hurriedly by panic-stricken men passing through the bulkhead, and it is evident that the means hereinbefore described and illustrated constitute the simplest for the purpose of revolving said door; but I do not therefore limit myself to the sole use of said means, nor to the general construction of door and easing, as it is obvious that the cylindrical door can be revolved by other known means of a mechanical nature and the general construction of said door and easing varied without departing from the spirit of my invention.

Packing may be inserted in grooves within the casing along edges of doorways; but the use of said packing is not, for obvious reasons, to be preferred.

Having fully described my invention, what I claim, and desire to secure by Letters Patent of the United States, is-- A bulkhead door or passage-way, consisting of a cylindrical casing attached to the bulkhead or partition and provided with doorways in opposite sides of its circumference, a hollow cylindrical door having a doorway in its circumference revolubly mounted in said casing and provided with handles H on the inside and recesses H in the outside or with other suitable means by which said door may be revolved, substantially as described.

W'ILLIAM KIRKALDY.

Witnesses:

ROBERT KIRKALDY, MARGARET KIRKALDY.