In this section, the technical drawings of the manual hand drill and its main components are presented. Technical drawings are important because they show the product in a clear, detailed, and standardized way. Unlike the 3D model, these drawings focus on the shape, projection views, and assembly relationships of the parts. The drawings include different…

In this part of the project, the manual hand drill was assembled by combining the separately modeled components in CAD software. The main purpose of the assembly stage was to show how each part fits together and how the complete mechanism works as a single product. Instead of focusing only on individual parts, this stage…

In this stage, the main parts of the manual hand drill were modeled separately using CAD software. Each component was designed according to its function and approximate shape in the product. The modeling process helped us understand the structure of the drill, the connection between parts, and how the mechanism works. Main Body: The central…

The patent document describes an important improvement in the mechanism of a manual hand drill, especially a breast drill. The invention was made by George O. Leopold from Philadelphia, Pennsylvania, and the patent was granted on August 14, 1917. The main purpose of this invention was to improve the clutch mechanism used in hand-operated drilling…

The photos below show hand-drawn sketches of the hand drill. The sketches were created using millimeter measurements.

Need and EmergenceThroughout human history, there has been a need to join, fasten and shape materials.Especially in areas such as building wooden structures, manufacturing householdgoods, and producing ships and vehicles, there has been a need to drill holes. Theserequirements led to the development of simple drilling tools and, over time, laid thegroundwork for the invention…