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Longarm quilting is the process by which a longarm sewing machine is used to sew together a quilt top, quilt batting and quilt backing into a finished quilt.. A complete longarming system typically consists of a sewing machine head, a frame, a table with a layer of plastic (under which is placed a pantograph), and several rollers on which the fabric layers and batting are attached.
Drafting pantograph in use Pantograph used for scaling a picture. The red shape is traced and enlarged. Pantograph 3d rendering. A pantograph (from Greek παντ- 'all, every' and γραφ- 'to write', from their original use for copying writing) is a mechanical linkage connected in a manner based on parallelograms so that the movement of one pen, in tracing an image, produces identical ...
Longarm quilting machines can be used to make larger quilts. Larger machines can be leveraged so that the quilter does not have to hold the fabric. [44] Some specialist quilt shops offer longarm services. Machine quilting needles are very sharp in order to readily pierce layers of quilt and properly sew together the quilt top, batting and backing.
A patchwork quilt is a quilt in which the top layer may consist of pieces of fabric sewn together to form a design. [1] Originally, this was to make full use of leftover scraps of fabric, but now fabric is often bought specially for a specific design.
This configuration is also called a pantograph, [2] [3] however, it is not to be confused with the parallelogram-copying linkage pantograph. The linkage can be a one-degree-of-freedom mechanism if two gears are attached to two links and are meshed together, forming a geared five-bar mechanism. [1]
Void pantographs work by exploiting the limitations and features of copying equipment. A scanner or photocopier will act as a low-pass filter on the original image, blurring edges slightly. It will also not be perfectly aligned with the directions of the document, causing aliasing. Features smaller than the resolution will also not be reproduced.
The exception in this list is Watt's parallel motion, which combines Watt's linkage with another four-bar linkage – the pantograph – to amplify the existing approximate straight line movement. It is not possible to create perfectly straight line motion using a four-bar linkage, without using a prismatic joint. Watt's linkage (1784)
Whole-cloth quilt, 18th century, Netherlands.Textile made in India. In Europe, quilting appears to have been introduced by Crusaders in the 12th century (Colby 1971) in the form of the aketon or gambeson, a quilted garment worn under armour which later developed into the doublet, which remained an essential part of fashionable men's clothing for 300 years until the early 1600s.