Automatic zigzag sewing machine

Claim 2

A zigzag sewing machine, comprising: a frame, stitch forming instrumentalities mounted on the frame, a plurality of stitch pattern information carrying means for controlling said instrumentalities and for forming a plurality of different stitch patterns, pattern selecting means operative to render one of said stitch pattern information carrying means corresponding to a desired stitch pattern selectively effective, regulators for influencing said stitch forming instrumentalities and for controlling amplitude and feed length and direction, at least one manually operable knob operatively connected with said regulators, and connecting means operatively connecting said pattern selecting means with at least one of said regulators for automatic setting thereof into a predetermined condition suitable to form the desired stitch pattern in relation to the operation of said pattern selecting means, said manually operable knob operatively connected with said at least one regulator being adapted to be automatically shifted to a position corresponding to the automatic setting of said regulator for indicating said setting thereof, and being adapted to be optionally shiftable from said position to another position within a certain range for changing said setting of said at least one regulator, independently of the operation of said pattern selecting means.

Claim 3

A zigzag sewing machine according to claim 1, further comprising: means for holding the manually operable knob in said another position, and means for releasing the action of said holding means upon the operation of said pattern selecting means.

Claim 4

A zigzag machine according to claim 2, wherein said pattern selecting means includes a single manually operable member for selecting a desired stitch pattern, and said connecting means includes control cam means movably mounted in the frame, for movement in relation to the operation of said single manually operable member, and control linkage means operatively interconnecting said control cam means with at least one of said regulators.

Claim 5

A zigzag sewing machine, comprising: a frame, a needle bar carried by said frame for lateral oscillation and for lengthwise reciprocation, a feed dog movably mounted in cooperation with said needle bar, a main shaft rotatably mounted on the frame for actuating said needle bar and feed dog, a plurality of stitch pattern cams rotatably carried by the frame and driven in timed-relation to the rotation of said main shaft, first cam follower means mounted for engaging with a selected one of said stitch pattern cams and for imparting lateral oscillation according to the cam shape to said needle bar, at least one feed controlling cam rotatably carried by the frame and driven in timed-relation to rotation of the main shaft, second cam follower means mounted for selectively engaging with said feed controlling cam and for controlling the feed movement of said feed dog according to the cam shape, cam selecting means operable for selectively engaging said first and second cam follower means with one of said stitch pattern cams and said feed controlling cam, respectively, corresponding to a desired stitch pattern, an amplitude regulator for regulating the amplitude of lateral oscillation imparted to the needle bar, a first manually operable knob operatively connected with the amplitude regulator for operation thereof, a feed regulator for regulating the length and direction of feed movement of the feed dog, a second manually operable knob operatively connected with the feed regulator for operation thereof, and connecting means operatively connecting said cam selecting means with said amplitude regulator and said feed regulator for automatically setting them into a predetermined condition suitable to form the desired stitch pattern in relation to the operation of said cam selecting means, wherein each of said first and second knobs are adapted to be automatically shifted to a position corresponding to each setting of said regulators, respectively, for indicating the amplitude of lateral oscillation and the length of feed movement automatically determined upon said operation of the cam selecting means, and wherein said feed regulator is controlled according to the cam shape of said feed controlling cam in the automatically shifted position of said second knob upon engagement of said second cam follower means with said feed controlling cam by the operation of said cam selecting means.

Claim 6

A zigzag sewing machine, comprising: a frame, a needle bar carried by said frame for lateral oscillation and for lengthwise reciprocation, a feed dog movably mounted in cooperation with said needle bar, a main shaft rotatably mounted on the frame for actuating said needle bar and feed dog, a plurality of stitch pattern cams rotatably carried by the frame and driven in timed-relation to the rotation of said main shaft, first cam follower means mounted for engaging with a selected one of said stitch pattern cams and for imparting lateral oscillation according to the cam shape to said needle bar, at least one feed controlling cam rotatably carried by the frame and driven in timed-relation to rotation of the main shaft, second cam follower means mounted for selectively engaging with said feed controlling cam and for controlling the feed movement of said feed dog according to the cam shape, cam selecting means operable for selectively engaging said first and second cam follower means with one of said stitch pattern cams and said feed controlling cam, respectively, corresponding to a desired stitch pattern, an amplitude regulator for regulating the amplitude of lateral oscillation imparted to the needle bar, a first manually operable knob operatively connected with the amplitude regulator for operation thereof, a feed regulator for regulating the length and direction of feed movement of the feed dog, a second manually operable knob operatively connected with the feed regulator for operation thereof, and connecting means operatively connecting said cam selecting means with said amplitude regulator and said feed regulator for automatically setting them into a predetermined condition suitable to form the desired stitch pattern in relation to the operation of said cam selecting means, wherein each of said first and second knobs are adapted to be automatically shifted to a position corresponding to each setting of said regulators, respectively, for indicating the amplitude of lateral oscillation and the length of feed movement automatically determined upon said operation of the cam selecting means, and wherein said feed regulator is controlled according to the cam shape of said feed controlling cam in the automatically shifted position of said second knob upon engagement of said second cam follower means with said feed controlling cam by the operation of said cam selecting means.

Claim 7

A zigzag sewing machine, comprising: a frame, a needle bar carried by said frame for lateral oscillation and for lengthwise reciprocation, a main shaft rotatably mounted on the frame to actuate said needle bar for the lengthwise reciprocation, a plurality of stitch pattern information carrying means for controlling the lateral oscillation of said needle bar to form a plurality of different stitch patterns, operating means operatively connected to said needle bar for imparting thereto the lateral oscillation according to said stitch pattern information carrying means, pattern selecting means operative to render one group of said stitch pattern information carrying means corresponding to a desired stitch pattern selectively effective, an amplitude regulator operatively interconnected with said operating means for regulating the amplitude of lateral oscillation imparted to said needle bar, connecting means operatively connecting said pattern selecting means with said amplitude regulator for automatic setting thereof into a predetermined condition suitable to form a desired stitch pattern in relation to the operation of said pattern selecting means, manual means operatively connected with said amplitude regulator, said manual means being shiftable for changing the setting of the regulator into another condition from said predetermined condition independently of the operation of said pattern selecting means, means for holding said manual means in the shifted position thereof, and means for releasing the action of said holding means upon the operation of said pattern selecting means.

Claim 8

A zigzag sewing machine, comprising: a frame, a needle bar carried by said frame for lateral oscillation and for lengthwise reciprocation, a main shaft rotatably mounted on the frame to actuate said needle bar for the lengthwise reciprocation, a plurality of stitch pattern information carrying means for controlling the lateral oscillation of said needle bar to form a plurality of different stitch patterns, operating means operatively connected to said needle bar for imparting thereto the lateral oscillation according to said stitch pattern information carrying means, pattern selecting means operative to render one group of said stitch pattern information carrying means corresponding to a desired stitch pattern selectively effective, an amplitude regulator operatively interconnected with said operating means for regulating the amplitude of lateral oscillation imparted to said needle bar, connecting means operatively connecting said pattern selecting means with said amplitude regulator for automatic setting thereof into a predetermined condition suitable to form a desired stitch pattern in relation to the operation of said pattern selecting means, manual means operatively connected with said amplitude regulator, said manual means being shiftable for changing the setting of the regulator into another condition from said predetermined condition independently of the operation of said pattern selecting means, means for holding said manual means in the shifted position thereof, and means for releasing the action of said holding means upon the operation of said pattern selecting means.

Claim 9

A zigzag sewing machine according to claim 5, wherein said stitch pattern information carrying means comprises a plurality of stitch pattern cams rotatably mounted on said frame and driven in timed-relation to the rotation of said main shaft, said operating means includes cam follower means mounted for engagement with one of said stitch pattern cams, and said pattern selecting means is operative to engage said cam follower means with a selected one of said stitch pattern cams corresponding to a desired stitch pattern.

Claim 10

A zigzag sewing machine according to claim 5, wherein said manual means includes a manually operable knob adapted to be automatically shifted to a position corresponding to the setting of said amplitude regulator, in the predetermined condition thereof, for indicating the amplitude of lateral oscillation automatically determined.

Claim 11

A zigzag sewing machine, comprising: a frame, a needle bar carried by said frame for lateral oscillation and for lengthwise reciprocation, a main shaft rotatably mounted on the frame to actuate said needle bar for the lengthwise reciprocation, a plurality of stitch pattern information carrying means for controlling the lateral oscillation of said needle bar to form a plurality of different stitch patterns, operating means operatively connected to said needle bar for imparting thereto the lateral oscillation according to said stitch pattern information carrying means, pattern selecting means operative to render one group of said stitch pattern information carrying means corresponding to a desired stitch pattern selectively effective, a feed dog movably mounted on said frame and actuated by said main shaft in cooperation with said needle bar, a feed regulator for regulating the length and direction of feed movement of said feed dog, connecting means operatively connecting said pattern selecting means with said feed regulator for automatic setting thereof into a predetermined condition suitable to form a desired stitch pattern in relation to the operation of said pattern selecting means, manual means operatively connected with said feed regulator, said manual means being shiftable for changing the setting of the regulator into another condition from said predetermined condition independently of the operation of said pattern selecting means, means for holding said manual means in the shifted position thereof, and means for releasing the action of said holding means upon the operation of said pattern selecting means.

Claim 12

A zigzag sewing machine, comprising: a frame, a needle bar carried by said frame for lateral oscillation and for lengthwise reciprocation, a main shaft rotatably mounted on the frame to actuate said needle bar for the lengthwise reciprocation, a plurality of stitch pattern information carrying means for controlling the lateral oscillation of said needle bar to form a plurality of different stitch patterns, operating means operatively connected to said needle bar for imparting thereto the lateral oscillation according to said stitch pattern information carrying means, pattern selecting means operative to render one group of said stitch pattern information carrying means corresponding to a desired stitch pattern selectively effective, a feed dog movably mounted on said frame and actuated by said main shaft in cooperation with said needle bar, a feed regulator for regulating the length and direction of feed movement of said feed dog, connecting means operatively connecting said pattern selecting means with said feed regulator for automatic setting thereof into a predetermined condition suitable to form a desired stitch pattern in relation to the operation of said pattern selecting means, manual means operatively connected with said feed regulator, said manual means being shiftable for changing the setting of the regulator into another condition from said predetermined condition independently of the operation of said pattern selecting means, means for holding said manual means in the shifted position thereof, and means for releasing the action of said holding means upon the operation of said pattern selecting means.

Claim 13

A zigzag sewing machine according to claim 8, wherein said manual means includes a manually operable knob adapted to be automatically shifted to a position corresponding to the setting of said feed regulator, in the predetermined condition thereof, for indicating the length of feed movement automatically determined.

Claim 14

A zigzag sewing machine according to claim 8, wherein said pattern selecting means includes a single manually operable member rotatably mounted on said frame, said connecting means includes control cam means mounted in said frame for rotation in relation to the operation of said single manually operable member, and control linkage means operatively interconnecting said control cam means with said feed regulator, and said releasing means is operable in relation to said control cam means upon the manual operation of the single operable member.

Claim 15

A zigzag sewing machine, comprising: a frame, a needle bar carried by said frame for lateral oscillation and for lengthwise reciprocation, a feed dog movably mounted in cooperation with said needle bar, a main shaft rotatably mounted on said frame for actuating said needle bar and said feed dog, a plurality of stitch pattern cams rotatably carried by said frame and driven in timed-relation to the rotation of said main shaft, cam follower means mounted for engagement with a selected one of said stitch pattern cams and for imparting lateral oscillation according to the cam shape to said needle bar, cam selecting means operable for selectively engaging said cam follower means with one of said stitch pattern cams corresponding to a desired stitch pattern, an amplitude regulator for regulating the amplitude of lateral oscillation imparted to said needle bar, a first manually operable knob operatively connected with said amplitude regulator for operation thereof, a feed regulator for regulating the length and direction of feed movement of said feed dog, a second manually operable knob operatively connected with said feed regulator for operation thereof, connecting means operatively connecting said cam selecting means with said amplitude regulator and said feed regulator for automatically setting them into a predetermined condition suitable to form the desired stitch pattern in relation to the operation of said cam selecting means, each of said first and second knobs being adapted to be automatically shifted to a position corresponding to each setting of said regulators, respectively, for indicating the amplitude of lateral oscillation and the length of feed movement automatically determined upon said operation of the cam selecting means, and being adapted to be optionally shiftable from said position to another position for changing said setting of each regulator independently of the operation of said cams selecting means, means for holding each of said first and second knobs in said another position, and means for releasing the action of said holding means in relation to the operation of said cam selecting means.

Claim 16

A zigzag sewing machine, comprising: a frame, a needle bar carried by said frame for lateral oscillation and for lengthwise reciprocation, a feed dog movably mounted in cooperation with said needle bar, a main shaft rotatably mounted on said frame for actuating said needle bar and said feed dog, a plurality of stitch pattern cams rotatably carried by said frame and driven in timed-relation to the rotation of said main shaft, cam follower means mounted for engagement with a selected one of said stitch pattern cams and for imparting lateral oscillation according to the cam shape to said needle bar, cam selecting means operable for selectively engaging said cam follower means with one of said stitch pattern cams corresponding to a desired stitch pattern, an amplitude regulator for regulating the amplitude of lateral oscillation imparted to said needle bar, a first manually operable knob operatively connected with said amplitude regulator for operation thereof, a feed regulator for regulating the length and direction of feed movement of said feed dog, a second manually operable knob operatively connected with said feed regulator for operation thereof, connecting means operatively connecting said cam selecting means with said amplitude regulator and said feed regulator for automatically setting them into a predetermined condition suitable to form the desired stitch pattern in relation to the operation of said cam selecting means, each of said first and second knobs being adapted to be automatically shifted to a position corresponding to each setting of said regulators, respectively, for indicating the amplitude of lateral oscillation and the length of feed movement automatically determined upon said operation of the cam selecting means, and being adapted to be optionally shiftable from said position to another position for changing said setting of each regulator independently of the operation of said cams selecting means, means for holding each of said first and second knobs in said another position, and means for releasing the action of said holding means in relation to the operation of said cam selecting means.

Claim 17

A zigzag sewing machine according to claim 11, therein said cam selecting means includes a single manually operable member rotatably mounted on said frame, said connecting means includes control cam means mounted in said frame for rotation in relation to the operation of said single manually operable member, and control linkage means operatively interconnecting said control cam means with said regulators, said control cam means has two cam grooves adapted to automatically set said each regulator into the predetermined condition by means of said linkage means, and each said regulator is changeable from the predetermined condition to another condition within a certain range depending on each said cam groove by the optional shifting of said manually operable knob.