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A hole punch, also known as hole puncher, or paper puncher, is an office tool that is used to create holes in sheets of paper, often for the purpose of collecting the sheets in a binder or folder (such collected sheets are called loose leaves). A hole punch can also refer to similar tools for other materials, such as leather, cloth, or sheets ...
Schiffli machines evolved from, and eventually replaced manually operated "hand embroidery" machines. The hand embroidery machine used double ended needles and passed the needles completely through the fabric. Each needle had a single, continuous thread. Whereas the schiffli machine used a lock stitch, the same technique used by the sewing ...
The workpiece is sheared by pressing (either by machine or hand tool) the punch through the workpiece and into the die. The middle section of the workpiece is scrap; commonly known as the chad in paper and similar materials. The punch and die are shaped to produce the desired shaped hole.
A punching machine is a machine tool for punching and embossing flat sheet-materials to produce form-features needed as mechanical element and/or to extend static stability of a sheet section. According to the file, Richard Walsh, the county of Grayson, and the State of Texas had invented and applied for US patent in 1894.
Punching is a forming process that uses a punch press to force a tool, called a punch, through the workpiece to create a hole via shearing. Punching is applicable to a wide variety of materials that come in sheet form, including sheet metal , paper , vulcanized fibre and some forms of plastic sheet.
To bind a document, the user first punches holes in the paper with a specialized hole punch. Pages must be punched a few at a time with most of these machines. If hard covers are desired, they must be punched as well. In bulk applications, a paper drilling machine may be used. Then the user chooses a spine size that will match the document.
A punch needle stitch is made by forcing the needle through the weave of the fabric, creating a loop that is kept in place by friction. [1] [5] [7] The tool is held so that the eye of the needle stays on the opposite side of the direction of the stitch. [1] [4] [8] Punch needle embroidery is typically worked from the front of the fabric. On the ...
Paper-drilling machine. Paper drilling is a technique used in binderies for providing large quantities of paper with round holes. [1] The paper can be processed as loose leaves and in brochures (stitched, perfectly bound). [citation needed] The holes can be drilled for storage purposes, such as filing, [1] or sometimes for decorative purposes ...