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US 4,657,051 AGranted
Weaving machine
OwnerFrancisco Speichinventor
Life of this patent
Estimating the term…
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OwnerFrancisco Speichinventor
Estimating the term…
In the weaving machine warp threads (24) are guided from a warp let-off apparatus (2) via a shedding apparatus (6) to a fabric take-up apparatus (4). The weaving machine contains a main drive (8) at which are connected a weaving reed (14) and a filling thread inserting element (16). In addition, an auxiliary drive shaft (46) is connected at the main drive (8), which auxiliary drive shaft (46) drives the warp let-off apparatus (2), the fabric take-up apparatus (4) and the shedding apparatus (6). A common drive shaft (66) of the warp let-off apparatus (2) and of the fabric take-up apparatus (4) is connected with the auxiliary drive shaft (46) via a reversing gear unit (10). The reversing gear unit (10) is constructed as a superimposed gear unit and contains an auxiliary motor (90) in order to superimpose a reverse rotational movement of the warp let-off apparatus (2) and the fabric take-up apparatus (4). An electronic control apparatus (12), which is connected with the shedding apparatus (6) and the reversing gear unit (10), makes it possible to reverse the weaving program when the weaving machine is running forward.
Weaving machine comprising an electronically operated control apparatus (12) for operating a weaving program for the weaving machine, a shedding apparatus (6) including a dobby (56) and a first drive shaft (58) for driving said dobby, a main drive (8), a fabric take-up apparatus (4) capable of being driven in a first direction for take-up and in an opposite second direction, a warp let-off apparatus (2), a second drive shaft (66) interconnecting said warp let-off apparatus (2) and said fabric take up apparatus (4), means interconnecting said main drive (8) to said second drive shaft (66) and a reversing gear unit, said reversing gear unit comprises a second drive shaft for driving said fabric take-up apparatus, wherein the improvement comprises that said reversing gear unit includes an override gear unit, an auxiliary motor arranged to drive said override gear unit, said auxiliary motor is controlled by said control apparatus for driving said override gear unit for selectively overriding said main drive so that said fabric take-up apparatus can be selectively driven in the second direction while said interconnecting means remains connected to said main drive.
Dependencies are inferred from the claim text.