Claims
- 1. A tenter for moving fabric material having rim portions through a heat treatment zone comprising a plurality of carriage means having the rims of fabric secured thereto for guiding the rims of the fabric material through the heat treatment zone including a carrier for each carriage means, which carriers are connected to a drive chain driven by a motor, characterized in that each carriage means comprises at least one spring biasing means disposed between a carriage and its respective carrier to form a resilient connection between the carrier and said carriage, whereby the carriage means can be moved relative to its respective carrier so that the speed of the carriage substantially corresponds with the speed of the fabric during movement through the heat treatment zone.
- 2. A tenter according to claim 1 characterized in that each carriage means comprises oppositely disposed springs acting against the carrier to permit increasing or decreasing speed of the carriage means relative to the carriers.
- 3. A tenter according to claim 1 characterized in that the carriages are mounted in a track and are subject to friction forces, means are provided for monitoring the force imposed on the drive chain by the fabric material comprising a load cell that is positioned to be responsive to said fabric-imposed forces on said chain to regulate said drive motor to overcome the friction forces and act to insure that the weft threads of the fabric remain substantially linear.
- 4. A tenter according to claim 2 characterized in that the carriages are mounted in a track and are subject to friction forces, means are provided for monitoring the force imposed on the drive chain by the fabric material comprising a load cell that is positioned to be responsive to said fabric-imposed forces on said chain to regulate said drive motor to overcome the friction forces and act to insure that the weft threads of the fabric remain substantially linear.
- 5. A tenter as set forth in claim 1 in which the connection between the carrier and carriage consists of at least one pin means connected to said chain and extends into a chamber defined by said carriage, said spring means are located in said chamber and consist of springs located on both sides of said pin means, and normally act to bias the pin to a neutral position relative to said carriage.
- 6. A tenter as set forth in claim 1 in which each carriage includes a plurality of rollers that are positioned in a guide track and the connection between each carriage and the chain consists of a plurality of pin means, each of which is subjected to oppositely acting spring means.
- 7. A tenter as set forth in claim 1 in which each carriage includes a plurality of pins to which the rims of the fabric are connected.
Priority Claims (1)
Number |
Date |
Country |
Kind |
914489 |
Nov 1991 |
NOX |
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Parent Case Info
This application is a continuation of application Ser. No. 07/975,702, filed Nov. 13, 1992, now abandoned.
US Referenced Citations (9)
Foreign Referenced Citations (2)
Number |
Date |
Country |
166005 |
Jul 1921 |
GBX |
229758 |
Mar 1925 |
GBX |
Continuations (1)
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Number |
Date |
Country |
Parent |
975702 |
Nov 1992 |
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