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Publication numberUS791924 A
Publication typeGrant
Publication dateJun 6, 1905
Filing dateJan 19, 1905
Priority dateJan 19, 1905
Publication numberUS 791924 A, US 791924A, US-A-791924, US791924 A, US791924A
InventorsFrancis L Magee
Original AssigneeFrancis L Magee
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
US 791924 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

No. 791,924.' y PATENTED JUNE 6, 1905.

. P. L. MAGBE.




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. l I www) Srnris l NITFD Patented June e, 1.905.



SPECIFICATION forming part of Letters Patent No. 791,924, dated June 6, 1905.

i Application sied January 19, 1905. sen-ai no. 241,842.

T0 all whom, 'llt may concern:

Be it known that I, FRANCIS L. MAGnn,a citizen of the United States, residing' at Brownsville, in the county of Fayette and State of Pennsylvania, have invented new and useful Improvements in Vindow Ventilators, of which the following is a specification.

This invention relates to improvements in means for preventing the interior surface of show-window glass from frosting.

The object of the invention is to provide a series of spaced openings at the bottom of the glass and other openings at the top of the glass to permit currents of air to pass in against the face of the glass and thence out at the top. The introduction of these air-currents equalizes the temperature of the air inside the window and successfully prevents frosting; but if conditions should be such that condensation should take place the water incident thereto will pass off through the lower openings.

Other objects and advantages will be hereinafter referred to and be particularly pointed out in the claims.

In the drawings, Figure l is a perspective view looking' from the inside of a window, showing the application of my invention. Fig. 2 is an enlarged vertical section of the same. Fig. 3 is a horizontal section on the line .fr a', Fig'. 2, looking in the direction of the arrow a. Fig. 4 is a similar view taken on the same line, but looking in the direction of the arrow L. l

The numeral l indicates a show-window of ordinary construction; 2, the top, 3 the bottom, and 4 the g'lass, of the same.

is the outside strip, against which the glass 4 rests, and 6 is the insidestrip, the glass being firmly held in place by the strips 5 and 6.

The bottom 3 has formed in it at appropriate intervals slots 7, which incline so as to open to the atmosphere just outside the front S of the window 1 and to enter the inside of the window in a plane with the inner face of the glass. Grooves 9 are cut in the face of the strip G and they are coincident with the openings '7, which insures the air-currents being directed against the face of the glass. The grooves 9 and openings 7 are lined with metal 12 to prevent the dampness rotting the wood, as will be obvious. The upper part of the strip 6 is formed with openings 13, which register with openings 16 in the outside strip 5, which communicate with the atmosphere. Slides 17 regulate the inlet and exit of air through the openings 9 and 13, respectively, which is a very important part of my improvement. Y

By reference to the drawings it will be noticed that the grooves 9 and 13 are elongated and spaced from each other, each groove being controlled independent of the other. The purpose of this feature is to loe able to equally distribute the variousair-currents and equalize the same at different points on the g'lass.

It frequently happens that only one side of a window will become frosted on the inside, due, it is true, to local conditions, and it is to meet this condition that I provide a slide for each opening'. Under such circumstances a dealer may iind it expedient to open the slides of the openings at that part of the window where frost has made its appearance, whereupon the air coming in from the atmosphere will cause condensation, and the water will pass off through the grooves 9.

By arranging the grooves 9 in the face of the strip 6 adjacent the face of the glass any water due to condensation can be carried off to the outside of the window without interfering with the goods displayed. The condensation between the grooves will be directed to said grooves by the valley formed in the top of the strip 6.

My invention is extremely simple in construction and effective in operation. The arrangement of a plurality of individually-controlled openings across the window insures of currents of air being' directed to particular points on the glass to equalize the temperature and remove the frost without admitting sufficient air into the room as would perceptibly reduce the temperature and make it uncomfortable.

vWhat I claim as new is* l. In combination, a window comprising a casing, and a glass, aseries of openings formed in the bottom of the casing, a strip formed with grooves next the glass at the bottom, the openings in the bottom oi' the easing and the grooves registering, slides controlling the admission of air through the grooves, a strip formed with grooves adjacent the glass at the top of the Window, a strip formed with openings outside the window, said openings oommunioating with the grooves in the top strip, and slides for individually controlling the exit oi' air through the openings at the top of the Window.

2. In Combination, a Window comprising a casing and a glass, a series of elongated openings formed in the bottom of the casing, a strip having a series of elongated grooves in its face adjacent the glass, slides individually oontrollingthe inlet of air th rough the grooves, the series of grooves extending entirely aeross the glass, and exit-openings formed at the top of the window.

3. In combination, a Window comprising a easing and a glass, a strip at the bottom and on the inside of the glass, said strip being flat on the face which bears against the glass and formed with a series of grooves to form openings parallel With the glass to direct currents of air against the face of the glass, slides individually controlling the eXit of air through the openings, a series of elongated openings formed in the bottom of the Window-casing which open at their outer ends to the atmosphere and communicate at their inner ends with the grooves, and a series of elongated exit-openings which are parallel with the face of the glass and formed at the top of the Window.

In testimony Whereoil I aflix my signature in presence of two subscribing Witnesses.


Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2506977 *Apr 28, 1948May 9, 1950Adolfo TortorelliRefrigerated showcase having means for preventing condensation
US5277657 *Jul 29, 1992Jan 11, 1994Truitt Archie AAir distribution system
US5468185 *May 20, 1994Nov 21, 1995Truitt; Archie A.Air distribution system
US5680991 *Jul 27, 1995Oct 28, 1997Truitt; Archie ArthurAir distribution system and sprayer incorporating an air distribution system
US5884844 *Jun 23, 1997Mar 23, 1999Truitt; Archie ArthurMethod of distributing a particulate material
Cooperative ClassificationE06B7/10