The windshield car wiper is a device that adapts to the outside of the windshield, to separate rain, snow, etc., falling on it, to facilitate visibility. By extension, the name is also applied improperly to the glass cleaning mechanism that is intended for the same purpose to the rear window, since it is the same system. The first windshield car wiper models were adopted around 1920; they were constituted by a rubber spatula (usually double, to rub both sides of the glass), which was manually operated.
In the thirties, these devices were replaced by more advanced systems, mechanical, electromechanical or pneumatic.
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