FREE BOOKS

Author's List




PREV.   NEXT  
|<   56   57   58   59   60   61   62   63   64   65   66   67   68   69   70   71   72   >>  
ns & Co., Ltd_.] [Footnote 3: For a full description of all finishing processes, see _The Finishing of Jute and Linen Fabrics_, by T. Woodhouse. (Published by Messrs. Emmott & Co., Ltd., Manchester.)] The cropped cloth is now taken to the clamping machine, and placed on the floor on the left of the machine illustrated in Fig. 43, which represents the type made by Messrs. Charles Parker, Sons &, Co., Dundee. The cloth is passed below a roller near to the floor, then upwards and over the middle roller, backwards to be passed under and over the roller on the left, and then forwards to the nip of the pulling rollers, the bottom one of which is driven positively by means of a belt on the pulleys shown. While the cloth is pulled rapidly through this machine, two lines of fine jets spray water on to the two sides of the fabric to prepare it for subsequent processes in which heat is generated by the nature of the finishing process. At other times, or rather in other machines, the water is distributed on the two sides of the cloth by means of two rapidly rotating brushes which flick the water from two rollers rotating in a tank of water at a fixed level. In both cases, both sides of the fabric are "damped," as it is termed, simultaneously. The damped fabric is then allowed to lie for several hours to condition, that is, to enable the moisture to spread, and then it is taken to the calender. [Illustration: _By permission of Messrs. Charles Parker, Sons & Co., Ltd_. FIG. 43 DAMPING MACHINE] The calenders for jute almost invariably contain five different rollers, or "bowls," as they are usually termed; one of these bowls, the smallest diameter one, is often heated with steam. A five-bowl calender is shown on the extreme right in Fig. 41, and in the background, while a complete illustration of a modern 5-bowl calender, with full equipment, and made by Messrs. Urquhart, Lindsay & Co., Ltd., Dundee, appears in Fig. 44. [Illustration: _By permission of Messrs. Urquhart, Lindsay & Co., Ltd_. FIG. 44 CALENDAR] The cloth is placed on the floor between the two distinct parts of the calender, threaded amongst the tension rails near the bottom roller or bowl, and then passed over two or more of the bowls according to the type of finish desired. For calender finish, the bowls flatten the cloth by pressing out the threads and picks, so that all the interstices which appear in most cloths as they leave the loom, and which are exa
PREV.   NEXT  
|<   56   57   58   59   60   61   62   63   64   65   66   67   68   69   70   71   72   >>  



Top keywords:

calender

 

Messrs

 

roller

 

fabric

 

machine

 

passed

 
rollers
 

Lindsay

 

bottom

 

processes


permission

 

Urquhart

 
finishing
 

Illustration

 

rapidly

 

rotating

 

termed

 
finish
 
Charles
 

Dundee


damped

 
Parker
 

MACHINE

 
spread
 
heated
 

calenders

 

invariably

 

DAMPING

 
diameter
 

smallest


pressing

 

threads

 

flatten

 

desired

 

cloths

 

interstices

 

tension

 

complete

 

illustration

 
background

extreme

 
modern
 

distinct

 

threaded

 
moisture
 

CALENDAR

 

equipment

 

appears

 
process
 

middle