US82031A - District of qolumbia - Google Patents

Description

NIELSPOULSON, OF WASHINGTON, DISTRICT 0F GOLUMBIA.

Letters Patent No. 82,031, dated September 8, 18678.

IMPROVED WINDOW-SHUTTER.

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TO ALL WHOM IT MAY CONCERN:

Be it known that I, NIELS POULsoN, of the city and county of Washington, and District of Columbia, have invented certain new arid useful Improvements inWindow-Shutters; and `I do hereby declare the following to .be a' sufficiently full, clear, and exact description thereof to enable one skilled in vthe art to which my said invention appertains to make and carry it into effect, reference being had `to the accompanying drawings, which are made a part ofthis specification.

My improved window-shutters are constructed of plates of corrugated metal, attached to jointed frames, which consist of bars, hinged together in pairs, in such a manner that when lowered, a continuous corrugated surface will be presented,'a.nd when drawn up, the corrugated plates will fit together within a. compact space.

The invention further consists in an improved manner of attaching the plates to'the folding bars.

My invention also relates to a device for masking or protecting the vertical edges of the shutters when closed.

In the drawings- Figure 1 is an exterior view of a window, exhibiting one-half of my improved shutter inl its closed position.-

Figure 2 represents a vertical section thereof at X X, fig. 1.

Figure 3 represents a horizontal section ofthe same at Y Y, iig. 1.

Figures 4:, 5, 6, and 7, are views on a larger scale. v

Figure 4 represents a vertical section of a casing or receptacle in the window-cap or lintel, with the shutter drawn up and folded `within it.

Figure 5 represents a vertical section of a portion of the shutter as lowered or closed.

Figure 6. is an external view of a portion of the closed shutter, Figure 7 represents a 'horizontal section of a portion ofthe shutter and its guiding-frame, and other accessories, in thc plane indicated by the line P P in ig. 5.

Similar letters of reference indicate corresponding parts in the several figures.

A A2 represent metallic bars, arranged crosswise in pairs, and hingedtogether at the points A A, after the manner of the st ructureffamliarly known as the Jacobs ladder 'or lazy-tongs. To the inner bar, A, of each pair is rigidly attached a corrugated metallic plate, B, the respective edges of which are reilexed in opposite directions, as represented at b, so that when the shutter is lowered, the adjacent plates will interlock, and mutually support each other, and-will thus possess the strength and rigidity of a continuous plate.

The pivot-pins A1, at the intersections of each pair of hars, are extended laterally to a sufficient length to work in vertical slots C, formed in the faces of the boxes C, in which the elevating-cords or chains, E, are enclosed. The chains E may be connected at their'upper ends to a winch, of any common and suitable construction, and at their lower ends are attached to the ends of a horizontal bar or plate, D,Aattached to the hinged bars A A2, at their lower extremity, and constituting the base of the shutter.

The har or plate 4D may be made of sutiicient width to close, when elevated, the box or chamber F, which receives the folded shutter, or a separate plate, D', may 'be attached to the plate D for this purpose,as reprevsented in fig. 4. Inthe upper portion of this'tig. 4, the plates B are omitted, exposing the mortises B', in the bars A, to receive tenons on the ends of the plates B.

The shutter may he held down by a pin or bolt, K, operated from the inside of the window, and engaging 1n the base-bar D.

G G. represent parts of the stationary window-frame. p

To cover. and protect the vertical edges of the shutter, I employ movable plates M, of segmental form, with scalloped edges, fitting the eorrugations oi' the plates B. The movable plates M work in vertical slots Mr, in stationary plates, attached to the window-frame, so that they may be slipped within the frame, as represented by dotted lines in iig. 7, when the shutter is to be raised. In their outer position they are locked by any suitable device which may be accessible onlyifrom within the building.

In some cases it will be found preferable to make the shutters in two parts, sliding horizontally, instead of vertically, and meeting in the centre. Under this arrangement they will be very useful as doors.` y lFrom an inspection of gs. 4 and 5, of the drawings, the bars A will be seen to have, near each end, a curvature, A, in opposite directions. This arrangement enables me to form the mortises or recesses, B, whichl receive the tenons 6', ofthe plates B, alternately in opposite edges of the bars, excepting in case of the end mortises, which are formed in the transverse centre of the bars. This disposition of the tenons on oppositeedges of the supporting-bars, causes the plates to be `heldfwith great security, so that theycannot possibly be ,displaced when the shutters are closed.

Having thus describedvmy invention, the following is what I claim as new therein, and desire to secure by i Letters Patent 1. I claim the combination of the folding bars A A2, and corrugated plates' B, when said plates are attached rigidly tothe inner bars A, as herein described for the purposes specied.

2. I also claim the sliding plates M, in the described combination, with the folding shutter A Az B, to

mask' or protect the vertical edges of the said shutter, substantially as explained.

3. I'claim the arrangement of the tenons of the plates B, alternately on opposite edgesof the bara A, substantially as and for the purposes set forth, l l

l NIELS POULS'ON Witnesses:

WM. H. BRERETON, J. E. M. BOWEN.

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