US1977899A - Antifrost shield for windows - Google Patents

Description

Oct. 23, 1934. B. G. sHAPlRo Er Al. 1,977,899

ANTIFRosT SHIELD FOR wINDows Original Filed Jan. 9. 1932 IG l2 Patented Oct. 23, 1934 AUNITI-:o STATES 1,977,899 4ANTIFRST SHIELD FOR WINDOWS Bernard G. Shapiro and Samuel Shapiro, Minneapolis, Minn.; said Bernard G. Shapiro assigner to Samuel Shapiro Application January 9, 19:92, serial No. 585,774' Renewed March 10, 1934 4 claims.

Our invention relates to anti-frost shields for windows. An object of the yinvention is to provide a device of this character which may be readily applied to windows to prevent the formation of 5 frost thereon or upon a portion thereof during cold weather. Our device is considered particularly applicable to windshields and other windows of motor vehicles, but may be applied to al1 ,win-

' dows where frost is liable to form and obscure ll the vision. Devices of this character with which we are familiar have hitherto carried opaque edges, which not only give an unsightly appearance but obscure a portion of the vision through the window. We overcome these objectionable I5 features .by employing transparent tape for adhesively securing the edgesfof the shield to the window in such mannerthat a dead-air space is produced between the window and the shield. We preferably employ transparent tape which has been subjected to waterproofing treatment in order to insure that thetape shall remain permanently transparent.

The full objects and advantages of our inven tion will appear in connection with the detailed description thereof, and the novel features of our Y invention will be particularly pointed out in the claims.

In the accompanying drawing whichlillustrates some of the forms in which our invention may be embodied, 9

Fig. 1 is a view in perspective of an automobile windshield and side window with anti-frost shields made in accordance with our invention secured to the inner sides thereof. Fig. 2 is a fraglatter form before the application of a` .cushion member. Fig. l0 is a sectional view showing the cushion member applied. Fig. 11 is a sectional view showing this form of the invention-applied 5o to a window.

In the embodiment shown in Figs. 3, 4 5, 6 and?, a plate of glass 12 is provided with an integrally molded offset peripheral margin 14 having a. beveled face 16 and an oppositely-disposed g5 face 18 lyingparallelto thebodypo'rtion ofthe parent tape is placed over the exposed face ci the mentary view in perspective of a transparent' (CI. Z0-40.5)

plate. In order to secure ythe shield to a window W, such as the windshield or other window of an automobile, we make use of transparent adhesive tape which preferably has been rendered waterproof. A strip of such transparent tape is designated in Fig. 2 by the numeral 20. Before apply-4 ing the shield to a window, the marginal face 18 of the shield is preferably covered with a cushion member 22 of the transparent tape as shown in Fig. 6. In order to apply the shield the cushion member 22 attached as above stated is placed against the window and then strips 24 of the transparent tape are secured to the beveled face 16 and to the window so as to extend around the periphery of the shield, as shown inA Fig. 7, and thereby form an air-tight `ioint to produce a deadair space between the window and the body of the shield.

In the embodiment shown in Figs. 8, 9, l0 and 11, a flat glassplate 26 is provided with an 75 oiset peripheral margin produced by cementing narrow glass strips 28 peripherally around one of the faces of the plate. -Before applying the shield to a window, a cushion member 30 of the 'transto glass strips 28 and around the peripheral edges of said strips and the edges ofthe plate 25. The member 30 thus serves not only as a cushion but covers the rough edges of the strips 2u and plate 26. In order to apply the shield the stripe 2t covered with the cushion member 30 are placed against the window and then strips 32 ci' the transparent tape are secured to the margin of the plate 26 and to the window, so as to'extend around the peripheryv of the shield, as shown in Fig. 11, and thereby form an air-tight joint to produce a dead-air space between the window and the body of the shield.

The operation and advantages of our invention will now be obvious. In cold weather the shield can be readily attached to windows such as windshields and other windows of motor vehicles which are liable to become coated with frost which obscures the vision therethrough. On account of the fact that 'the shield is secured to the window in spaced air-tight relation thereto, a dead-air space `is produced which prevents the formation of frost over the area protected by the'shield. In the case of motor vehicles driving is made much easier and safer, and in the case of display windows. persons on the outside can 'readily observe the objects on display on the inside. We consider glass to be a particularly desirable material for the shields, since it is hard and not essuyemned or auned, anda not name so 11 the transparent cushion not only assists in making an air-tight joint, but avoids the objectionable feature of glass rubbing on glass. 'Owing to the rigid nature of the glass shield it is not necessary to provide any supporting members between the intermediate portions'oi theshield and the window even when the shields are made of large size.

We claim:

1. An anti-frost shield for windows, comprising a glass plate having an oiIset peripheral margin carried therewith adapted to rest upon a window to produce a dead-air space, and transparent adhesive tape Aior securing said margin to the window.

2. An anti-frost shield for windows, comprising a glass plate having an offset beveled peripheral margin molded integrally therewith adapted to rest upon va window to produce a dead-l air space, and transparent adhesive tape secured to said beveled margin and the window.

3. An anti-frost shield for windows, -comprising a glass plate having an oilset peripheral margin molded integrally therewith, said margin having a face parallel to the body of said plate, a transparent cushion between said face 'and a window, said margin having its other face beveled, and transparent tape secured to said beveled face and the window whereby' a dead-air space is produced between the window and the body of the shield. v

4. An anti-frost shield for windows. comprising a glass plate having an offset peripheral margin molded integrally therewith, said margin having a face parallel to the body of said plate and adapted to rest upon a window to produce a dead-air space, said margin having its other face beveled down to a thin outer edge, and transparent tape secured to said beveled face and a window.

BERNARD G. SHAPIRO. SAMUEL SHAPIRO.

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