Driven by her desire to alleviate the burden of heavy schoolbooks for her students and to make learning more engaging, Ángela began to conceptualize her invention, the Encyclopedia Mecánica (Mechanical Encyclopedia).

Ángela Ruiz Robles filed the patent application for her Encyclopedia Mecánica, demonstrating her belief in the potential of her invention and her desire to protect her intellectual property.

Her invention was officially patented under the number 190.698. This acknowledges the originality and innovative nature of her creation.

Ángela created a second prototype, with the help of Parque de Artillería de Ferrol. This demonstrates her continued efforts to refine and improve her invention, even after the initial patent.

Despite facing challenges in securing funding and widespread adoption, Ángela remained a strong advocate for her invention and its potential to revolutionize education. She continued to promote the Encyclopedia Mecánica and its benefits.