4,433, filed February 1, 1935, issued as Patent No. Typically the initial revisions of a draft are done with lead, and then the pens are used later to create the final draft.My invention relates in general to telescopes and has more particular reference to telescopes for use in surveying instruments, such as levels, transits, and the like, the present application being divided from my application for United States Letters Patent for Telescope, Serial No. There are a number of attachments that can used with the ruling pen and compasses in order to change between writing in ink and lead. The technical pen is used in order to draw lines of a fixed width, where as the ruling pen allows for the width of lines to be varied. The compasses are used for drawing circles and arcs, and come in a variety of sizes to allow the drawing of very small circles in the case of the small compass, and very large circles in the case of the beam compass. The interior of the case has slots fitted to the tools so that there is minimal movement when the case is carried. The dividers are used to quickly compare and transfer measurements, and to divide lines into segments.
The function of the case is simply to store and protect the drafting tools, and keep them neat and organized. Drafting plays an important role in manufacturing, engineering, architecture, and cartography. The replacement parts consist of screws and heads for the compasses and ruling pen.įunctional Description: The purpose of drafting tools is to create precise diagrams which convey how something functions or should be constructed. With these tools come replacement parts carried in capsules. The set includes a large and small compass, a beam compass (with an extension), attachments for the compasses, both a ruling and technical pen, a pair of dividers, and a screwdriver. Though the case is plain and simple, the drafting tools contained inside are intricate and precise. The only markings on the inside of the case are the letters “DS” written in marker on the felt presumably the initials of the original owner. The case only has three words on the outside cover: “Made in Germany”. Physical Description: The drafting set is stored in a simple grey case with a red felt interior.
0 kommentar(er)
