US589314A - Scuttle-cover - Google Patents

Description

(No Model.)

W. L. SPRINGER. SGUTTLB COVER.

No. 589,314. Patented Aug. 31,1897.

UNITED 'STATES PATENT @FFI-Cn.,

IVILLIAM L. SPRINGER, OF CHICAGO, ILLINOIS.

SCUTTLE-COVER.

SPECIFICATION forming part of Letters Patent No. 589,314, dated August 31, 189'?. Application filed December 16, 1896. Serial No. 615,919. (No model.)

permit of easily opening it to its full extent to form a ready passage for persons desiring access to the roof from within the building. The invention consists principally of a cover hinged Qn the skylight casing yand stays for connecting the cover with thecasing, each stay being formed with two links pivotally connected with each other and with the cover and the casing, the links being arranged to fold when the cover is closed and to hold the cover in an approximately veri tical position when the links are extended.

The invention also consistsof certain partsv and details and combinations of the saine, as

will be fully described hereinafter and then pointed out in the claim.

Reference is to be had to the accompanying drawings, forming a part of this speciiication, in which similar characters of reference indicate corresponding parts in both the figures.

Figure l is a sectional side elevation of the improvement with the cover in a closed position; and Fig. 2 is a transverse section of the same, showing the cover in a raised position.l

The skylight or scuttle is provided with a suitable box or casing A, attached to the roof of a building and connected atone sideby hinges B with one of the depending flanges C of a cover C, adapted to fit over the upper end of the casing A, so as to close the same, as indicated in Fig. l.

On the free end of the cover C, and on the under side thereof, is arranged a spring-catch D, adapted to engage a lug E on the inside of the casing A, so as to securely lock the cover C to the casing to prevent unauthorized persons from opening the cover C when standin g on the roof, thereby preventing access to the building by way of the skylight.

Vhen it is desired to open the cover C from the inside of the building, the operator can readily disconnect the spring-catch D from the lug E to permit of swinging the cover C into an open position. The cover C and the casing A are connected with 'each other at their sides by stays F, each formed of two links F and F2, pivotally connected with the side of the casing A and the link F2 with the cover C. The links F and F2 are of such length that when the cover C is swung open it can only move into an approximately vertical position, as indicated in dotted lines in Fig. l and in full lines in Fig. 2.

The pivotal connection of the link F with the casing A is ashort distance from the middle thereof toward the hinges-B, and the pivotalconnection of the'link' F2 with the cover C is a corresponding distance from the Iniddle of the cover to the free end thereof, as will be readily seen` by reference to Fig. l.` ThusY when the cover C is closed the two links F and F2 readily fold into a V-shaped position. The link F is formed beyond the pivot F3 with a tongue F4, adapted to rest against a correspondingly-shaped tongue F5,

'formed on the endof ak bar FG, secured by rivets or other means between the two bars forming the link F2. Tlhelink F2 on each stay being formed of two duplicate bars rigidly secured to each other and forming a space vbetween them serve to render the connection between each pair ,of links that of an absolutely perfect knuckle, because the links F are fitted between the respective links F2 and can have no movement sidewise owing to their confinement by the bars composing the links F2. This arrangement relieves the pivot between the t'wo links of strain which would otherwise be placed thereon owin g to the twisting of the links. When the stay F is extended'and the cover Cis in an open position, then the two links F' and F2 are in alinement, with the tongue F4 resting on the tongue F5, so as to lockthe links in an open position to prevent accidental closing of the cover C;

Now it is evident that when it is desired to close the cover C upon the casing A the operator simply presses one of the links F or F2 outwardly, so as to open the joint of the two links and cause a closing or downward swinging of the cover C.

It is evident that by the arrangement de- IOO scribed the cover C lifts into a vertical posi tion when opened and forms a clear passage for persons desiring to pass upon the roof. It will further be seen that the device is very simple and durable in construction, is not liable to get out of order, and can be cheaply manufactured.

Having thus fully described my invention, I claim as new and desire to secure byLetters Patent- Y A stay formed of two links one of which has a tongue formed at one end and the second of which is formed of two bars rigidly secured to each other and receiving between two end portions thereof the end of the first link, which end has the tongue, a pivot-pin passing through the bars and through the XVILLIAM L. SPRINGER.

Witnesses:

ALBERT A. Fonusrnn, LONEY VON DE LECT.

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