Tuesday, February 9, 2021


 Seven wheel take-up motion:

In this take-up mechanism, a train of seven wheels is used. Seven wheels take-up motion is an intermittent take up motion.  This mechanism receives motion from the sley sword. When the crankshaft rotates, the slay sword receives to and fro motion from the crankshaft. 

A connecting rod is used to connect the finger and slay the sword. One end of the connecting rod is fitted with slay sword with the help of a bush and nut. The connecting rod can move freely at the connecting point.

The other end of the connecting rod is connected with the finger at point L with the same mechanism as slay sword joint. 

The finger L  is fulcrummed at the near bottom slot at point K.

When slay sword goes toward the front dead centre position, the pulling pawl freely mounted in the top slot of the finger pulls the teeth of ratchet wheel A.

This ratchet wheel is mounted on a shaft. Another standard wheel B gets mounted on this shaft.

When pulling pawl J pulls the teeth of the ratchet wheel, the standard wheel B  also rotates with the ratchet wheel.

A Pushing pawl I is also used to prevent backward rotation of the ratchet wheel.

The standard wheel B transfers angular motion to change wheel C fastened on the shaft. A change pinion D is also fastened with this shaft.

The change wheel C and change pinion D rotates in the same direction together.

The change pinion D imparts angular motion to the compound wheel E fastened on a shaft. A compound pinion F  is also fastened on this shaft. The compound wheel and compound pinion rotate in the same direction. 

The compound pinion transfers angular motion to the take-up roller wheel mounted on the take-up roller shaft. 

The take-up roller rotates with the take-up roller wheel in the same direction. 

When the cloth roller rotates, it draws the fabric to be produced.

In this mechanism, you can change one or two-wheel as you need.

A- Ratchet wheel

B - standard wheel

C - Change wheel

D - Change pinion

E -  Compound wheel

F - Compound pinion

G -  Take up roller wheel

H - Take up roller

I -  Pushing pawl

J -  Pulling pawl

K -  Finger fulcrum

L  - finger

Please click on the below video link to watch the full topic in Hindi:

You may also be interested in the following articles:

Let - off motion, secondary loom motion

Take - up motion, a secondary loom motion

Shedding motion, a primary loom motion

Picking motion, a primary loom motion

Beating motion, a primary loom motion

Schematic diagram of loom

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1 comment:

  1. this is ver intresting and helpful


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