US1112335A - Fireproof-window stop. - Google Patents

Description

F. F. SMITH.

FIREPROOF WINDOW STOP.

APPLICATION FILED JULY 29. 1914.

Patented Sept. 29. 1914.

1. PHom-Ll THO., WASHING TON. D. c.

FRANK F. SMITH, OF NEWARK, NEW JERSEY.

' rmnrnoon-wmnow sror.

Specification of letters Patent. Patented Sept. 29, 1914:.

Application filed m 29, 1914. Serial No. 853,877.

To all whom it may concern:

Be it known that I, FRANK F. SMITH, a citizen of the United States, and a resident of the city of Newark, in the county of Essex, State of New Jersey, have invented certain new and useful Improvements in Fireproof-l/Vindow Stops, of which the fol,- lowing is a specification.

The improvements relate to pivoted fireproof windows, and particularly to means for limiting the opening movement of such windows to prevent the window from reaching a point where it will balance and remain open instead of closing by gravity when released. Windows of this character are commonly pivoted slightly above the middle, so that when pivoted open to a horizontal position the lower half will, overbalance the upper half and cause the window to close automatically. Usually a chain with a fusible link is provided, connecting the upper rail, of the sash with the bottom of the frame by means of a hook or similar device, so that the window may be opened and secured open by the chain, and in casev of fire will close as soon as releasedby the melting of the fusible link. A number of devices for limiting the opening movement of the window, permitting its reversal for cleaning or other purposes and automatically returning to operative position when the'window is closed or partly closed have been devised, but the device most extensively used is that of my Patent, No. 970,656, of September 20, 11910,

in which there is a latch or gravity member and a stop into the path of which the said latch gravitates, so that it will return at all times automatically to operative position. In the present device the pawl or latch is normally in the path of the stop, but when moved therefrom for the purpose of perm tting reversal of the window will not return to operative position automatically, but will be returned to such position positively through an operative connection between it and the window sash when the window sash is swung back to its safety position.

The improvements are illustrated in the accompanying drawings, in which- Figure 1 is a front view of a pivoted window with a checking device embodying the improvements. Fig. 2 is an enlarged view taken from the same point as Fig. 1, showing the checking device and adjacent parts, with some of the parts taken away. Fig. 3 is a side view of the parts shown in Fig. 2 with the window closed. Fig. 4 is a similar view showin the Window reversed after the checking evice hasbeen moved from its normal position.

A represents the frame of the window and B the sash, the latter being mounted in the former by means of the pivotsC extending laterally from the boss D of the plate D of the sash and journaled at E in the plate E mounted onthe frame. a r

The underside of the bossD near its extremity forms a stop which is adapted to come in contact with the upper end F of opened to a predetermined extent, and to thus check the opening of the window at;that point. This position of the window sash is Ellustrated by the oblique dotted lines in 1g. 3. a b

The pawl or-latch F is pivoted to the plate E by means of the pivot G passin throu h the latch and into the plate. elow t e pivots of the latch is a curved extension F which extends downwardly and inwardly and has its extremity turned to a position approximately parallel with the sash when the sash is closed and the'latch' is in its normal position. The objectjand purposes of this extension F are to bring about the resto described. A lug F on the inside of. the

latch cooperates with the stop E projecting from-the plate E to limit the outward movement of the latch, and thisstop'E also checks the inward movement of the latch when it has reached a position in which its upper end F" is in the path of the stop D, and when the window is closed the latch is prevented from moving outward from the path of the stop by the contact of the lower extremity of the extension F with the sash. In this manner the latch is held positively in the path of the stop at all times, until the window is opened and it is positively moved from that path.

. When it is desired to reverse the window the sash is first swung partly open and the latch then moved outward so that the stop will pass it and permit the sash to assume a reversed position, as shown in Fig. 4. The latch will remain in this outward position so long as the window is reversed, but as soon as the window is closed the sashmoving in the direction indicated by the arrow in Fig. 4:will come in contact with the lower extremity of the extension F and to its proper position. If now the window is opened again it will be checked by con-- tact between the stop D and the upper end B o'fthelatch. It. will .be seen, therefore, that whenever the window is closed the latch is brought back to its defensive position in the path of the stop, and that any slight obstruction which might prevent the latch from pivoting freely to its original position will be overcome. The opposite side of the window may be provided with a pivot and checking device of the same construction, but the preferred construction consists of the plate D on the sash carrying the pivotC journaled in the plate E on the frame.

If desired the position and arrangement of the extension F with respect to the sash may be such, or the sash provided with a member so constructed that the sash in returning to its artl'y closed position with the stop immediately above the position usually occupied by the upper end of the latch will cause the said upper end of the latch to return to that position and will i thereafter slide past the said extension.

Such an arrangement is within the scope of the present improvement.

Various. other changes in the details of construction and arrangement may be made without departing from the scope of the invention. a

What I claim is:

- 1. A device of [the character described, comprising, a. stop and a movable latch, one carried by the frame and the other by the sash, saidparts adapted to come in contact when thesash is opened and to check the said opening movement at a predetermined ward its point, said latch having a portion normally thus force the latch to. turn on its pivot back in the path of the stop and mounted to move out of the path of said stop when it is desired toopen the said sash farther, and

means whereby the movement of the sash toclosed position automatically forces the latch back into the path of the stop.

2. The combination with a window, comprising a frame and a sash pivotally mounted therein, of a checking device comprising a stop and a latch, one mounted on the sash and the other on the frame and said latch opening thereof, said latch being movable out of alinement with the stop and the relative construction and arrangement of the same with respect to the sash being such that when the sash is closed it automatically returns the latch to the path of the stop.

3. The combination of a stop and a latch one adapted to be mounted on the frame and the other on a sash of a pivoted window, the latch having a portion constructed and arranged to come in contact with the stop when the sash is swung on its pivot and movable out of the path of the said stop to permit further pivotal movement of the window, and means whereby the reverse movement ofthe sash positively restores the latch to its original position.

Witness my hand this 21st day of July, 1914, at the city of New York, in the county and State of New York.

FRANK F. SMITH.

Witnesses MARY H. LEWIS, HELEN V. FITZPATRICK.

Copies: of this. patent may be; obtainedfor five cents each, by addressing the Commissioner of Patents,

Washington, D. G,

Images