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Publication numberUS921854 A
Publication typeGrant
Publication dateMay 18, 1909
Filing dateNov 18, 1907
Priority dateNov 18, 1907
Publication numberUS 921854 A, US 921854A, US-A-921854, US921854 A, US921854A
InventorsWaltr Lindemann
Original AssigneeWaltr Lindemann
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
US 921854 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)



Patented May'l8, 1909.


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Patented May 18, 1909.




Massachusetts, have invented new and useful Im rovements in Window-Ventilators, of

I the lapping ends across the sas said up er edge and the top rail to be ccwhich the following is a specification.

This invention relates to ventilators applicable to windows of buildings, cars, etc., and particularly to that class of window-ventilators which are directly connected with and make a part of the window-sash, preferably the up er sash. 7

In t is invention, horizontal deflecting plates or slats, preferably of glass, are pivotally sustained at their opposite ends by the sash, bein preferably. two or more in number, and t e upper edge of each slat or deflectin plate overlappm the lower edge of the ad acent plateabove 1t, the said slats being adapted to be partially rotated whereby parallel air-spaces may be produced between of the slats, said air-s aces being horizontal and inclining upwar and inward through the sash.

The nature of the invention is fullydescribed in detail below, and illustratedin the accompanying drawings, in which Figure 1 is a a window, showing my invention or improvement applied to the upper sash. Fig. 2 is an enlar ed central vertical section taken transversel y through that portion of the upper sash to which my invention is applied, looking toward the ri ht. Fig. 3 is an enlarged front elevation o the right hand portion of that part of the upper sash to whlch the invention is applied. Fig. 4 is a front elevation showing a modification. In Figs. 2 andv 3 the cord is omitted.

Similar characters of reference indicate corresponding parts.

Referring to Figs. 1, 2 and 3reference numeral 5 represents an ordinary windowframe, of which 6 is the jamb. 7 represents the lower sash, 8 the top rail of the upper sash, 9 and 10 the right and left stiles thereof, and 11 theglass which extends from the bottom rail of the upper sash to the point 12 where its u per edge extends horizontally leaving the space between cupied y my ventilating device.

- A vertical plate 13 is secured to themner surface of the right stile 9, and a slmilar plate 14 is secured to the inner surface of front elevation of a portion of Specification of Letters Patent. Application filed November 18, 1907. Serial No. 402,644.

Patented May 18, 1909.

the left stile 10. Pivotall secured at 15 to the plate 13 in a vertical ine are a number 'or series (three being shown in the drawing) of frames or holders which are adapted to support the right endsof slats or deflecting plates 16, each being made preferably of glass. Each of these holders nonsists of the main portion 17 vertically disposedagainst the late 13 to which itis ivoted at 15, said hol ers being made ang e-sha ed in horizontal section by means of t e flange 18 which extends inward along the outer surface of the glass slat 16, and a foot 19 which extends from the main portion 17 and the flange 18 horizontally under the lower edge of the glass slat, thus supporting it at that end. The main portion 17 of each of the holders is provided with an inwardly, and preferably somewhat upwardly extending arm 20 which is paralle with and extends beyond the late 13 into or toward the a artment in which the window is place vertically dis osed spring 21- is centrally connected wit each of the said main portions 17, and the upper end 22 of said spring and the lower curved end 2-3 bear normally against the inner surface of the adjacent or corresponding slat 16. These springs may be secured in any desired manner to the main portions 17,.a practical manner consisting in providing the central portion 24 of each spring with a shank which extends into a corresponding opening in said main portion 17. The lower portions of the main portions are provided with inwardly extending guards or guides 25. These guards serve to impart rigidity to the holders-whereby the glass plates 16 are prevented from becoming warped and broken, to prevent the said mam portions from catching on the outer edge of the plate 13 when the slats are being closed, and to operate as clearers when snow or ice collects on the adjacent surfaces of the plates 13 while the slats are open. Ifit were not for these guards there would be danger of the snow or ice interfering with the closing of the main portions 17, or of causing them to become sprung with the. result that the glass would become broken. As the slats are closed these guards ,or clearers 25 ush forward and remove any ice or snow w ich thus preventing breakclings to the plates,

of the pivoted age, clogging, or sticking plates.

The plate 14 which is secured to the left stile 10 has pivoted to it at 26 in vertical hole or slot in the bracket 32. Surroundinlg this circular rod 'is a spiral spring '34 whic ing the arms in raised positions and thus causing the holders to retain the glass slats next higher slats,

' all the slats 16 are swung with their upper edges inward and their lower edges outward, thus producing between thead acent edges said sheets of air being thic or or thinner acline, holders similar in construction to the holders 17, 18', 19, 25,

11 (Fig. 2) to which is secured the upper end 'horizontal lines which extend upward in resembles that of a number 0 cones mounted said holders being however without any extending arms 20, and bein provided with springs which bear against the inner surface of the glass slat at the left endthe holders and springs at the left .end operating exactly like the holders and springsat the right end and having corresponding reference characters so far as their parts are illustrated.

Pivotally connected at 27 with the outer ends of the arms 20 is a vertical bar 28 provided at its upper end with the horizontal 29, and at its lower end with a hole 30 of a cord 31, see'Fig. 1. 'A bracket 32 extends from the plate 13 to therear or right hand surface of the bar 28 under the lip 29, and a vertical rod 33 has;- its u or edge rigidly secured in the lip 29, an its lower end extends 'slidingly through a suitable is contracted between said bracket 32 and hip 29, and thus holds the bar 28 normally in t e raised position indicated, said bar holdin the closed osition, said slats being of such a width t at their u per edges overlap the inner surfaces of the ower edges of the and produce at "those points t' ht joints formed by the parallel surfaces 0 the slats which are necessarily at a slight inward angle. The lowest slat laps over the outer surface .of the upper edge 12 ofthe glass-.11, and the upper. slat extends inward anirlloverlaps' slightly a portion of the top ra" It will readily be seen that by pulling down on the cord 31 the bar 28 is drawn down and or surfaces of the 'slatsparallel passages on wardly from a vertical line, somewhat as illustrated in the dotted lines in Fi 2, thus allowin the outer air to be deflects upward beforeit enters the room, and causing it to enter the roomin upwardl moving sheets,

cording to the amount of the pull on the cord 31. In order that the cord, andficonsequently the bar 28 and the glass slats, mayv be retained secured to' its lgwer end a knob or handle 35 provided with a series of circumferential grooves 36 whereby .the-sha e of the ,knob

1n line on their a exes. Secured to the right jamb 6 isa p ate 37' provided with a pair of parallel horizontal arms 38 of shape to embrace the knob within any of the conical grooves, whereby the knobmay be held 1 in any desired position, I have adjusted to o enings of any width, that the air is deflector upward when it enters whereby it may be distributed in the room gradually and without perceptible draft, that 1 rain or snow striking the outer surface of the slats will be prevented from entering the window, and Wlll flow down outside and that when the slats are closed, if the glass is true and properly made the joints are tight.

It is evident that by constructin slats of glass there is no obstruction to the light, and the entire apparatus is rather ornamental than otherwise. Moreover, although I have shown the ventilator at the upper end of the upper sash it can be applied to any portion 0 either sash as desired.

I provide the bar 13 with a stop-pin 39 for the pur ose of limiting the downward movement 0 the arms 20.

In the modification illustrated in Fig. 4 a

of the sash, and two sets of ventilators are applied, made preferably right and left, the

' outer end of each ventilator being made exactly like the right end in Figs. 1, 2 and 3, and the inner end being made like the left end in Fig. 1. In this modification as there are two distinct ventilators which can be operated independently of each other, I provide two cords.

It will be noticed that strictly speaking this is not a modification of'the invention, but an illustration showing the manner in which it is applied to a broadwindow or sash. The ventilator at the'right of the figure is exactly like that shown in the first three figures, and the ventilator at the left is exactly the same in principle and construction exce t that its operating mechanism is at the le t instead of'at the right, the suports at the opposite ends being reversed rom their positions shown in the first three figures.

By means of the construction shown Fig. 4, I avoid making the glass slats so long that they might possibly be strained or broken while bein o erated.

Having thus ful y escribed my invention, what I claim, and desire to secure by Letters Patent is 1 In a window-ventilator adapted to be applied to a sash or window in a space produced by removing or omitting a portion of the Ipane, horizontal slats within said space, holr ers for supporting the opposite ends of the slats and comprising angle-sha d frames pivotally sustained in position an provided with feet underlap ing the lower edges of the points of their pivotal connection with the slats, arms exten mg inward from thehold- 1 plate, a bar pivotally connecting the outer *ers on one side, springs supported by the ends of said arms, and mechanism for imholders and bearin against the inner surparting vertical movement to the bar. 15 5 faces of the slats, c earing guards extending In testimony whereof I have signed my inward from said holders parallel with the l name to this specification in the presence of plate and thence bending at substantially 1 two subscribing witnesses.

right angles and substantially parallel with 1 WALTR LINDEMANN. the flanges of the holders over the sprin s, Witnesses: 10 the said clearing guards extending from t e I v FRED L. HEWITT,

holders between their lower ends and the I MAY R. OLEARY.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2496921 *Jun 6, 1945Feb 7, 1950Vicksell Sr Victor AAdjustable window ventilator
US2530708 *Jun 14, 1948Nov 21, 1950Loewenthal Sadie GBuilding unit
US2981987 *Jul 7, 1954May 2, 1961Schwab Walter HJalousies and weather sealing means therefor
US6865847 *Aug 26, 2003Mar 15, 2005Hunter Douglas Inc.Shutter louver brake
Cooperative ClassificationE06B7/084