Jig
OwnerCharles M. A. Penetinventor
Life of this patent
Estimating the term…
Abstract
Method for operating a machine intended for dyeing textile webs wherein the fabric to be dyed is passed through a dyeing bath and is wound onto a tractive roller. The instantaneous angular speed of the tractive roller is controlled during the operation of the machine and the speed regulated so as to maintain constant or substantially constant the centrifugal acceleration at the point where the fabric winds onto the tractive roller. Application is to machines of the Jig type.
Claims16
A process for operating a machine for dyeing webs of fabric, in which the fabric to be dyed passes through a dyeing bath and then winds onto a roller, said process comprising the following steps:
- a) monitoring the instantaneous angular speed .omega. of the winding roller during the operation of the machine,
- b) monitoring the linear speed of movement v of the fabric,
- c) forming the multiplication product .omega..v,
- d) adjusting the speed of rotation of the winding roller so as to maintain constant or substantially constant the product .omega..v.
A process for operating a machine for dyeing webs of fabric, in which the fabric to be dyed passes through a dyeing bath and then winds onto a roller, said process comprising the following steps:
- a) generating an electrical signal proportional to the angular speed .omega. of the winding roller,
- b) generating a second electrical signal proportional to the linear speed of movement v of the fabric,
- c) forming electronically a signal proportional to the product .omega..v,
- d) adjusting the speed of rotation of the winding roller so as to maintain constant or substantially constant the said product .omega..v.
A process for operating a machine for dyeing webs of fabric, in which the fabric to be dyed passes through a dyeing bath and then winds onto a roller, said process comprising the following steps:
- a) measuring continuously the instantaneous angular speed .omega. of the winding roller and calculating the product a..omega., a being a constant coefficient equal to R.sub.o .sqroot.m, R.sub.o being the initial radius of the winding roller and m being the ratio of the maximum radius of said roller to its initial radius,
- b) measuring continuously the instantaneous linear speed of movement v of the fabric,
- c) forming the sum a..omega.+v,
- d) adjusting the speed of rotation of the winding roller so as to maintain constant or substantially constant the sum a..omega.+v.
A process for operating a machine for dyeing webs of fabric, in which the fabric to be dyed passes through a dyeing bath and then winds onto a roller, said process comprising the following steps:
- a) generating an electrical signal proportional to the product a..omega., .omega. being the instantaneous angular speed of the winding roller, while a is a constant coefficient equal to R.sub.o .sqroot.m, R.sub.o being the initial radius of the winding roller and m being the ratio of the maximum radius of said roller to its initial radius,
- b) generating a second electrical signal proportional to the instantaneous linear speed of movement v of the fabric,
- c) forming electronically a signal proportional to the sum a..omega.+v,
- d) adjusting the speed of rotation of the winding roller so as to maintain constant or substantially constant the sum a..omega.+v.
A process for operating a machine for dyeing webs of fabric, in which the fabric to be dyed passes through a dyeing bath and then winds onto a roller, said process comprising the following steps:
- a) measuring the instantaneous angular speed .omega. of the winding roller during the operation of the machine,
- b) measuring the number n of wound turns on the winding roller during the operation of the machine,
- c) forming electronically the product ##EQU7## in which m is the ratio of the final radius to the initial radius of the winding roller and N is the number of wound turns of the fabric at the end of winding,
- d) adjusting the speed of rotation of the winding roller so as to maintain constant or substantially constant the product ##EQU8##
A process for operating a machine for dyeing webs of fabric, in which the fabric to be dyed passes through a dyeing bath and then winds onto a roller, said process comprising the following steps:
- a) generating an electrical signal proportional to the instantaneous angular speed .omega. of the winding roller during the operation of the machine,
- b) counting turn by turn the number n of wound turns on the winding roller,
- c) forming electronically the product ##EQU9## in which m is the ratio of the final radius to the initial radius of the winding roller and N is the number of wound turns of the fabric at the end of winding;
- d) adjusting the speed of rotation of the winding roller so as to maintain constant or substantially constant the product ##EQU10##
A machine for dyeing webs of fabric comprising a roller for receiving the fabric after passing through a dyeing bath, an electric motor for driving said roller, a device associated to said motor for adjusting its speed of rotation .omega., means designed to generate two electrical signals respectively proportional to the angular speed .omega. of the fabric winding roller and to the linear speed v of the fabric generated as a result of the rotation of this roller, and means utilizing these signals in order to supply the adjusting device of the electric motor with a control signal designed for keeping the product .omega..v constant or virtually constant.
A process for operating a machine for dyeing webs of fabric, in which the fabric to be dyed passes through a dyeing bath and then winds onto a roller, said process comprising the following steps:
- a) monitoring at each moment the angular speed of the winding roller .omega. and measuring the number n of wound turns on the winding roller,
- b) forming electronically the product
- R.sub.o [1+n(m-1/N)]=R.sub.n
- in which
- R.sub.2 is the initial radius of the winding roller,
- m is the ratio of the final radius of the winding roller to the initial radius of the winding roller,
- n is the number of wound turns at each moment on the winding roller,
- N is the number of wound turns at the end of winding on the winding roller, and
- R.sub.n is the radius corresponding at each moment to n wound turns on the winding roller;
- and
- c) adjusting the speed of rotation of the winding roller so as to maintain constant or substantially constant the product .omega..sup.2 R.sub.n which represents the centrifugal acceleration.
A process for operating a machine for dyeing webs of fabric, in which the fabric to be dyed passes through a dyeing bath and then winds onto a roller, said process comprising monitoring the instantaneous angular speed of the winding roller during operation of the machine;
- and adjusting said instantaneous angular speed during said operation of the machine so as to maintain centrifugal acceleration of said roller constant or substantially constant at the point the fabric winds onto said roller.
Dependencies are inferred from the claim text.