US78948A - Improved mosquito-bar for windows - Google Patents

Description

@uitrit 'ta'trs atrnt @frn Letters Patent No. 78,948, dated June 16, 1868.

IMPROVBD -liOSQUI'lO-BAR IOR WINDOWS.

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To ALL WHoM 1T MAY oonenrnv:` v

Bc it known that I, ANDREW C. FLINT, of Boston, in the county of Suffolk, and State of Massachusetts, have invented certain new and useful Improvements in Mosquito-Bars for Windows; and I do hereby declaro that the following,'taken in connection with the drawings which accoinpany and form part of this specification, is a description of my invention suilicient to enable those skilled in the art to practise it.

This invention is designed for use in windows'to prevent ingress of insects, it having certain peculiari-- ties of construction, by which the bar is easily and quickly attached innnd detached from position, and is adapted to openings of different widths within a reasonable limit or range, and is made to fit closely against `the parts of a window-sash, and it is in said peculiarities oi` the detail of construction that my invention consists.

In the drawings# Figurel shows in elevation a mosquito-bar embodying my invention, while Figure 2 shows thc same in plan.

The bar is made of two uprights, a. a, connected at top and bottoni by elastic bands b c, the netting being confined at its edges to the uprights and to the said bands by a sewing-machine, or by hand, whilst the elastic bands are stretched to the width of' the netting, and the netting is in a flat or unpuckered condition. The stitches are thus close'together, and there are no packers in the netting until the rubber is allowed to contract.

The pieces (Z represent the strips of the window-frame which hold the sash in place. In these strips are screws seen in dotted lines at c e, projecting inwardly toward each other from the opposite strips, and parallel with the plane of thc window-glass. The uprights a t have formed in their outer edges dove-tailed grooves, of

`suchgshape as to fit over the heads of the screws at e c, and, by so doing, hold the uprights in their places against the strips LZ d. i

The inner edges oi' the uprights a a are rebated, and strips,ff, arc fitted to the rebates,.and lare heldin place by the screws g, the strips ff and screws g forming clamps, by which the vertical edges of the netting 7L are confined. 4

In` the joints between the pieecsj'and a, vertical holes are bored, which receive wires, around which the elastic bands are turned, and the joints between said piecesf and a, at the ends oi` said pieces,'are enlarged to receive the thickness ofthe bands, which is considerably greater than the thickness of the netting.

The wires t', beingipasscd into the 'nights of the elastic bands, they arc prevented from'being pulled out of position by strain exerted in a direction to elongate the width ofthe bar.

The lower band, e, is iixverl with reference to the uprights, so that a portion of` its width lprojects below their lower ends, and the portion so projecting lies or laps upon the horizontal strip of the window-'frame, and thus prevents the existence of an opening or crack at that location through which insects can pass. i

The upper band, b, is folded through the centre of its width at the ends where it is `secured to the uprights. This causes said band to assume a horizontal position, so that its edge nearest the glass pushes toward the sash another band, m, which has its width vertically, like the width of' the lower band c. f

Thus the band m is forced by band b against the horizontal sash-liar, to prevent the existeneeat that location of a crack through which insects could pass.- This provision of the two upper bands m and b at the iippcr part of the bar, one having its width vertical and the other horizontal, is specially useful where the horizontal bars of the sash are not so wide as are the vertical bars, which construction is often found in window-sashes. i Y

I claim a mosquito-bar made with rigid clamping uprights and elastic bands, and with netting clamped by the uprights and stitched to the band,ssubstantially as and for the purpose described.

Also, the combination of the two elastic bands and m with the uprights, when the bands are arranged in planes at angles to cach other, substantially as and for thepurpose specified.

Also, the'projectingarrangemcnt of the lower band c with reference to the lower ends ofthe uprights, for the purpose specified.

Also, the wires 2', in combination with the elastic bands and sockets in the uprights, substantially as and for the purpose specified,

' AND, C. FLINT.

Witnesses:

J. B. Gnosnv, FRANCIS Gounn.

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