首页>
外国专利>
Device for teaching the abecedary and numbers. (Machine-translation by Google Translate, not legally binding)
Device for teaching the abecedary and numbers. (Machine-translation by Google Translate, not legally binding)
展开▼
机译：用于教授初学者和数字的设备。 （通过Google翻译进行机器翻译，没有法律约束力）
展开▼
页面导航
摘要
著录项
相似文献
摘要
DEVICE FOR THE TEACHING OF THE ABECEDARY AND NUMBERS that is characterized by comprising a rectangular shaped case closed by a practicable cover on the front surface of the case, there are a series of longitudinally grooves conveniently distributed through which a thread appears at the end of which it has fixed a plate on which a letter or number sign is printed and on the lower edge of the case a sheet covering almost its entire width is provided, which has the upper edge turned in a semicircular shape and equipped with a series of grooves so that when you want to make the composition of a word or quantity, the plates containing the corresponding signs are ordered in order to move them away from their upper edge in the turned area of the sheet lower being suspended by the respective threads which have been inserted into each of their corresponding grooves keeping the plates in their housing thanks to the tension of the threads which are fixed to an individual retractable element housed inside the case and which facilitates recovery from rest once removed from its housing. (Machine-translation by Google Translate, not legally binding)
展开▼
