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US 4,527,597 AGranted
Dobby
AssigneeMurata Kikai Kabushiki Kaisha
InventorsKaichiro Yoshida, Yutaka Ueda
Life of this patent
Estimating the term…
Abstract
Dobby for a weaving loom in which control of the operative and non-operative positions of retaining hooks or hook arms which are engaged with and disengaged from hooks of heald frame-driving levers to actuate desired heald frame is electrically performed through solenoids corresponding to the respective levers, which are actuated by an electronic control system having a micro-computer.
Claims5
A dobby of a weaving loom apparatus comprising:
- a heald frame;
- a heald frame driving lever adapted to actuate said heald frame;
- a retaining hook having operative and non-operative positions, so that when said retaining hook is in said operative position, said retaining hook is engaged with a hook formed on said heald frame driving lever, and when said retaining hook is in said non-operative position, said retaining hook is disengaged from said hook on said heald frame driving lever;
- solenoid means for determining said operative and non-operative positions of said retaining hook;
- an electronic control device having a switch circuit controlling the energization of said solenoid;
- and
- a weave texture memory element readable by said electronic control device to appropriately operate said switch circuit.
4 more elements
A dobby for controlling heald frames comprising:
- a jack lever, rotatable about a stationary shaft;
- a wire cable for moving said heald frame, said wire cable being attached to the free end of said jack lever, rotation of said jack lever causing said wire cable to move said heald frame;
- a lever, capable of oscillating about a stationary shaft, said lever connected to said jack lever through a rod;
- a connecting lever, pivotally attached, at its intermediate portion, to the intermediate portion of said oscillating lever;
- a pair of hook arms, pivotally attached to the ends of said connecting lever, respectively, each of said hook arms having a hook formed on the free end thereof;
- a pair of solenoids controlling the positions of the hook arms, respectively;
- a pair of reciprocating knives, able to be engaged with and disengaged from said hooks of said hook arms according to reciprocative movements relative to the rotation of a loom;
- and
- an electrical control device having a switch circuit acting on a memory element in which a weave textured data is stored, said electronic control device being connected to said solenoids to appropriately energize and de-energize said solenoids pursuant the weave pattern to be produced.
6 more elements
Dependencies are inferred from the claim text.