US235812A - George b - Google Patents

Description

(No Model.) l

G. B. PULLINGER.

. Insect Screen.

No. 235,812. PatentedDec. 21,1880.

NITE STATES PATENT EETEE..

GEORGE B. PULLINGER, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR 0F CNE-HALF TO AM. MILLER OWENS, OF SAME PLAGE.

lNSECT-SCREEN.

SPECIFICATION forming part of Letters Patent No. 235,812, dated December 21, 1880,

Application led June l2, 1880. (No model.)

To all whom t may concern:

Be it known that I, GEORGE B. PULLINGER, a citizen of the United States, residing in the city and county of Philadelphia, and State ot' Pennsylvania, have invented a new and useful Improvement in Mosquito or other Insect Screens, which improvement is fully set forth in the following specilication and accompanying drawings, in which- Figure l is a front view of the mosquitoscreen embodying my invention. Fig. 2 is a vertical section thereof in line .fr Fig. l. Fig. 3 is an enlarged vien1 of adetached portion.

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

My invention consists of netting attached to sash-frames and Wound on and unwound from gravitatingrollers which are fitted to boxes secured to the cap and siii of a windowcasing, said boxes also having guide-rollers for directing the main length of the netting to and from the rollers, as will be hereinafter set forth.

Referring to the drawings, A represents a window-casing, and B B the upper and lower sashes, respectively, thereof. C represents the screen for the upper sash, and G the screen forvthe lower sash.

The screen C consists of a piece of netting secured to the bottom rail of the sash, extended to the sill and directed under a horizontal roller, D, which is journaled to a box, E, connected to the sill, and then secured to a horizontal roller, F, whose journals or gudgeons a are guided in slots b in the upright side pieces, Ef, of the box E. Attached to said side pieces, E', are cords or straps G, which are also secured to the journals or ends of the roller F, so as to wind on" and unwind therefrom.

The upper screen, C, is connected to the top rail of the lower sash, the box E is secured to the cap of the window-casin g, and the guideroller Dis journaled to the top of the box, the parts being, in fact, the reverse o f those ot' the lower screen. f

When the lower sash is raised the screen C is extended and unwound from the roller F, and thev screen Gis wound on the roller Ff. 5o When the sash is lowered the screen C is extended and the screen `G wound on the roller F, so that at all times the top and bottom spaces ot' an open Window, whether occasioned by lowering the upper or raising the lower sash, are guarded or screened by netting, it being not-iced that the upper sash may always remain lowered Without at'tecting the utility of the screen.

When the lower sash is lowered the screen 6o C is permitted to descend, thus no longer controlling the roller F, which, in its tendencyY to fall, is caused to rotate by the restraining action of the cords or straps G, and thus the netting is dra-wn taut and wound on the roller. The upper screen, C, being drawn down and over the roller D', rotates the roller F', and as this roller rotates, the restraining action of the cords or straps G causes said lroller to rise and unwind the netting. y 7o When the lower sash is raised it draws with it the netting Gf, and as the latter is directed around the roller D and draws on the roller F, the strap or cord G, beingcaused to wind around said roller F, andthus rotate it, elevates the roller and properly unwinds the netting as itis required for the ascending sash. The upper netting, G, being raised with the ascending sash, permits the roller F to fall, and the straps G', unwinding from said roller, 8o cause it to rotate in the proper direction for winding up the netting carried up by the ascending sash.

In every operation the netting lies close to the window-casing and prevents entrance ot' 85 mosquitos and other insects thereat, and a single piece of netting is employed `for each screen.

Having thus described my invention, what I claim as new, and desire to secure by Let- 9o ters Patent, is

1. In combination with a window-sash, a pair of screens attached, respectively, to the top and bottom thereof, a pair of gravitating rollers for the other ends of said screens, and friction-cords which support said rollers and wind upon them, causing them to revolve as thesash is raised or lowered, whereby said screens are always drawn taut and cover the a screen, C, a stationary roller, D, a vertispaces above and below said sash, substancally-movable roller. Rand afrioton-cord,G, ro tially as set forth. supporting said roller and Winding on the 2. In combination with the screen and its journal thereof, as set forth.

5 roller, the vertically-slotted boxes E and the GEORGE B. PULLINGER.

straps or cords C, which are attached at one Vtnesses: end to said rollers and xed at the other end. J oHN A. WIEDERSHEIM,

3. In combination with a Window-sash, B', A. P. GRANT.

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