US3926133A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sewing machine safety device
Assignee: Retail Holding NV
•
Filing: 1974-11-01
•
Granted: 1975-12-16
•
Expires: 1994-11-01
Abstract
Abstract The safety device includes a latching member for interlocking with a jogging mechanism of a sewing machine to inhibit zig-zag movement of a reciprocating needle under preselected conditions. The latching member is solenoid actuated through a switch that is controlled in one embodiment by installation of one of two interchangeable throat plates on the work bed of the machine, and controlled in another embodiment by each of two interchangeable throat plates. In each embodiment the latching member is arranged to interlock with the jogging mechanism when the reciprocating needle is being recieved in a needle aperture in the throat plate that is too small to accommodate zig-zag movement of the needle.
Inventors
- 👤 William Herron
- 👤 Kenneth D Adams
- 👤 John Petronchak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 08:33
CPC Classifications
D; D05; D05B; D05B19/00; D05B19/02; D05B3/00; D05B73/00; D05B73/04; D05B73/12
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
126 words
In a sewing machine having a needle bar supporting an endwise reciprocatory needle and jogging means cooperating with the needle to laterally jog the needle during the formation of zigzag stitches, a work bed on the sewing machine, throat plate means accommodated on said work bed having selectable portions to support work against reciprocation of said needle to accommodate the formation of a zig-zag stitch pattern or a straight stitch pattern, and safety means for inhibiting operation of said jogging means, said safety means including switching means responsive to the presence on said work bed of said throat plate means when one of said selected portions is arranged adjacent to the reciprocatory path of said needle to accommodate the formation of one of said stitch patterns.
Claim 2
Dependent Claim
126 words
In a sewing machine having a needle bar supporting an endwise reciprocatory needle and jogging means cooperating with the needle to laterally jog the needle during the formation of zigzag stitches, a work bed on the sewing machine, throat plate means accommodated on said work bed having selectable portions to support work against reciprocation of said needle to accommodate the formation of a zig-zag stitch pattern or a straight stitch pattern, and safety means for inhibiting operation of said jogging means, said safety means including switching means responsive to the presence on said work bed of said throat plate means when one of said selected portions is arranged adjacent to the reciprocatory path of said needle to accommodate the formation of one of said stitch patterns.
Claim 3
Dependent Claim
50 words
The combination of claim 1 wherein the selectable portions of said throat plate means comprise a first needle aperture for receiving reciprocation of the needle during formation of the zig-zag stitch pattern and a second needle aperture for receiving reciprocation of the needle during formation of the straight stitch pattern.
Claim 4
Dependent Claim
45 words
The combination of claim 1 wherein said switching means include a switch actuating member actuatable by said throat plate means when one of said selectable portions is arranged adjacent the reciprocatory path of said needle to accommodate the formation of one of said stitch patterns.
Claim 5
Dependent Claim
71 words
The combination of claim 1 wherein the selectable portions of said throat plate means comprise first and second throat plate members interchangeable with each other on the work bed, the first throat plate member having an aperture to receive reciprocation of the needle during formation of the zig-zag stitch pattern, the second throat plate member having an aperture to receive reciprocation of the needle during formation of the straight stitch pattern.
Claim 6
Dependent Claim
77 words
The combination of claim 4 wherein said switch means comprise a switch actuating member having first and second switch positions, said switch actuating member being disposed below the work bed for cooperation with at least one of said throat plate members, said one throat plate member having means for shifting said switch actuating member from one of said switch positions to the other said switch position when said one throat plate is installed on said work bed.
Claim 7
Dependent Claim
97 words
The combination of claim 4 wherein said switching means comprise a switch actuating member having first and second switch positions said switch actuating member being disposed below the work bed for cooperation with said first and second throat plate members when either of said throat plate members is installed on said work bed, the first throat plate member engaging said switch actuating member for disposition of the switching means in one of said switch positions, the second throat plate member engaging the switch actuating member for disposition of the switching means in the other said switch position.
Claim 8
Dependent Claim
85 words
The combination of claim 1 wherein said jogging means include a jogging member element engageable with the needle bar, a zig-zag driver means element in the sewing machine for driving the jogging member element and a transmission means element interposed between the jogging member element and the zig-zag driver means element for establishing communication between the zig-zag driver means element and the jogging member element, said safety means cooperating with one of said elements through said switching means to inhibit operation of said jogging means.
Claim 9
Dependent Claim
80 words
The combination of claim 7 wherein said safety means cooperate with said transmission means element to inhibit operation of said jogging means, said transmission means element including elongated link means having one end portion engageable with the zig-zag driver means element for receiving input jogging movements and an opposite end portion engageable with the jogging member element for providing output jogging movements to the jogging member element in response to the input jogging movements from the zig-zag driver means element.
Claim 10
Dependent Claim
134 words
The combination of claim 8 wherein one of the selectable portions of said throat plate means comprise a first needle aperture for receiving reciprocation of the needle during formation of a straight stitch pattern, said sewing machine including a frame and said safety means further comprising interlocking means for inhibiting lateral movement of said link means, said interlocking means including a first latching member mounted to said frame, said first latching member having an interlock position for inhibiting lateral movement of said link means and a noninterlocking position for permitting lateral movement of said link means, said latching member being in one of said positions when one of the selectable portions of said throat plate means is arranged adjacent the reciprocating path of said needle to accommodate formation of one of the stitch patterns.
Claim 11
Dependent Claim
74 words
The combination of claim 9 wherein said sewing machine includes electrical control means for controlling said zig-zag driver means element, said first latch member being electrically actuatable into said interlock position and said switching means having first and second switch positions, said electrical control means being connected to said switching means at one of said switch positions and said first latch member being connected to said switching means at the other said switch position.
Claim 12
Dependent Claim
82 words
The combination of claim 10 wheRein said switching means includes a contact member movable from one of said switch positions to the other said switch position such that the first latch member is actuated into said interlock position and the control means is disabled when the contact member is at the other said switch position, the control means being activated and the first latch member being in the noninterlocking position when the contact member is at said one of said switch positions.
Claim 13
Dependent Claim
49 words
The combination of claim 11 wherein said electrical control means includes means for locating said needle at a center hole position when the contact member is at the other said switch position wherein the first latch member is actuated to the interlock position and the control means is disabled.
Claim 14
Dependent Claim
79 words
The combination of claim 9 wherein said first latch member is laterally immovable and said link means comprise an elongated link member, said link member being rendered substantially immovable in a lateral direction when said first latch member is in said interlock position, and resilient coupling means interconnecting said link member with said zig-zag driver means element to take up any lateral movement of the zig-zag driver means element when the first latch member is in said interlock position.
Claim 15
Dependent Claim
138 words
The combination of claim 9 wherein said link means comprise an elongated link member, said interlocking means comprising a second latch member affixed to and projecting from said link member, said first latch member being deflectable in a non-lateral direction toward said second latch member to latch with said second latch member in said interlock position, said safety means further including a solenoid member having a movable armature with an energized position and a deenergized position, one of the positions of said solenoid armature permitting said first latch member to deflect toward said second latch member into said interlock position to inhibit lateral movement of the link member, the other position of said solenoid armature permitting said first latch member to deflect out of said interlock position to enable said link member to move in said lateral direction.
Claim 16
Dependent Claim
49 words
The combination of claim 14 wherein said second latch member includes a plug portion, the first latch member including a deflectable arm having an aperture engageable with said plug portion to form an interference fit with said plug portion when the first latch member is in said interlock position.
Claim 17
Dependent Claim
120 words
The combination of claim 9 wherein said link means comprise an elongated link member, said safety means comprising a solenoid member mounted to said frame, said solenoid member having an armature movable in a non-lateral direction from an energized position to a deenergized position, said armature being laterally immovable during energization and deenergization, said first latch member being affixed to a free end of said armature for interlocking engagement with said link member to inhibit movement of the link member in a lateral direction when the solenoid is in one of said positions, the other said position of said solenoid armature enabling said first latch member to unlock with said link member to permit lateral movement of the link member.
Claim 18
Dependent Claim
75 words
The combination of claim 16 wherein said link member includes an aperture and said first latch member comprises a plug portion movable in said aperture to form an interference fit and inhibit lateral movement of the link member when said solenoid is in one of said positions, the other said position of said solenoid armature moving said plug portion to a position of noninterference with said aperture to permit lateral movement of said link member.
Claim 19
Dependent Claim
156 words
In a sewing machine having a needle bar supporting an endwise reciprocatory needle and jogging means cooperating with the needle to laterally jog the needle during the formation of a zig-zag stitch pattern, a work bed on the sewing machine, throat plate means disposable on the work bed, said throat plate means having a first needle aperture to receIve reciprocation of the needle during formation of the zig-zag stitch pattern, said throat plate means having a second needle aperture to receive reciprocation of the needle during formation of a straight stitch pattern, and safety means for inhibiting operation of said jogging means, said safety means including interlocking means actuatable into locking engagement with said jogging means and switching means for actuating said interlocking means into locking engagement with said jogging means while said throat plate means is disposed on the work bed with said second needle aperture arranged to accommodate endwise reciprocatory movement of said needle.
Claim 20
Dependent Claim
156 words
In a sewing machine having a needle bar supporting an endwise reciprocatory needle and jogging means cooperating with the needle to laterally jog the needle during the formation of a zig-zag stitch pattern, a work bed on the sewing machine, throat plate means disposable on the work bed, said throat plate means having a first needle aperture to receIve reciprocation of the needle during formation of the zig-zag stitch pattern, said throat plate means having a second needle aperture to receive reciprocation of the needle during formation of a straight stitch pattern, and safety means for inhibiting operation of said jogging means, said safety means including interlocking means actuatable into locking engagement with said jogging means and switching means for actuating said interlocking means into locking engagement with said jogging means while said throat plate means is disposed on the work bed with said second needle aperture arranged to accommodate endwise reciprocatory movement of said needle.
References Cited (Backward Citations)
US3051107A
Cited
US3131660A
Cited
US3358631A
Cited
US3373709A
Cited
US3552337A
Cited
US3782311A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-12-15 | 1979-06-16 | 1979-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-15 | 1983-06-16 | 1983-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-15 | 1987-06-16 | 1987-12-16 | $7700.00 | Window Closed / Lapsed |