Dobby Loom

A Dobby Loom is a type of floor loom that controls the warp threads using a device called a dobby. Dobby is short for "draw boy" which refers to the weaver's helpers who used to control the warp thread by pulling on draw threads.
A dobby loom is an alternative to a treadle loom. Each of them is a floor loom in which every warp thread on the loom is attached to a single shaft using a device called a heddle. A shaft is sometimes known as a harness, but this terminology is becoming obsolete among active weavers. Each shaft controls a set of threads. Raising or lowering several shafts at the same time gives a huge variety of possible sheds through which the shuttle containing the weft thread can be thrown.

A manual dobby uses a chain of bars or lags each of which has pegs inserted to select the shafts to be moved. A computer assisted dobby loom uses a set of solenoids or other electronic devices to select the shafts. Activation of these solenoids is under the control of computer program. In either case the selected shafts are raised or lowered by either leg power on a dobby pedal or electric or other power sources.

Hand Loom

What is Hand Loom | Hand Loom Weaving
The earliest looms were vertical shaft, with the heddles fixed in place in the shaft. The warp threads pass alternately through a heddle and through a space between the heddles, so that raising the shaft will raise half the threads (those passing through the heddles), and lowering the shaft will lower the same threads the threads passing through the spaces between the heddles remain in place.

Types Of Looms | Loom Types

The Different Types of Looms are :

Hand Loom

Dobby Loom

Jacquard Loom

Northrop Loom

Overview of Looms

Loom

A loom is a machine or device for weaving thread or yarn into textiles. Looms can range from very small hand-held frames, to large free-standing hand looms, to huge automatic mechanical devices. The ancient Egyptians and Chinese used looms as early as 4000 BC.

In practice, the basic purpose of any loom is to hold the warp threads under tension to facilitate the interweaving of the weft threads. The precise shape of the loom and its mechanics may vary, but the basic function is the same.

Hand Looms

The first and original loom was vertically twist-weighted types, where threads are hung from a wooden piece or branch or affixed to the floor or ground. The weft threads are manually shoved into position or pushed through a rod that also becomes the shuttle. Raising and lowering each warp thread one by one is needed in the beginning. It is done by inserting a piece of rod to create a shack, the gap between warp threads in order for the woof to easily traverse the whole warp right away.

Ground Looms

Horizontal ground looms permit the warp threads to be chained between a couple of rows of dowels. The weaver needs to bend forward to perform the task easily. Thus, pit looms with warp chained over a ditch are invented to let the weaver have his or her legs positioned below and leveled with the loom.

Back Strap Looms

They are well recognized for their portability. The one end of this loom type is secured around the waist of the weaver and the other end is attached around a fixed thing like door, stake, or tree. Pressure applied can be customized by just bending back.

 

Shuttle Looms

It is the key component of the loom along with the warp beam, shuttle, harnesses, heddles, reed, and take up roll. In the loom, yarn processing includes detaching, battening, alternative, and taking-up operations.

Shuttleless Looms

Because the shuttle can cause yarns to splinter and catch, several types of shuttleless looms have been developed. These operate at higher speeds and reduced noise levels.

Some of the common shuttleless looms include water-jet looms, air-jet looms, rapier looms, and projectile looms.