Patent US3929081A successfully refreshed from Google Patents.
US3929081A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electro mechanical adder mechanism
Assignee: Singer Co
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Filing: 1975-01-24
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Granted: 1975-12-30
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Expires: 1995-01-24
Abstract
Abstract An adder mechanism with a plurality of adder links, each of which contains a thick section and a thin section, each adder link may have a selected section placed in a effective position by a plurality of link actuators individually connected to the adder links. Adder spacers interconnect the adder links at the effective position whereby the total dimension of the adder spacers and the selected thin or thick sections in the effective position may be utilized to influence, for example, stitch forming instrumentalities of a sewing machine. The adder mechanism is supported in a frame which also supports a drive shaft. A plurality of collars, one for each link actuator, is slidably keyed to the drive shaft to rotate therewith. Each collar is formed with at least one tooth, designed to engage with one or the other of a pair of oppositely disposed and axially spaced apart teeth on an internal surface of the link actuator thereby to drive the link actuator and connected adder link with its thin section or its thick section to the effective position adjacent the adder spacer. A solenoid is utilized to alter the position of the collar that a selected one of the spaced apart teeth on the link actuator may be engaged.
Inventors
- 👤 Stanley Joseph Ketterer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:35
CPC Classifications
D; D05; D05B; D05B19/00; D05B19/02; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18056; Y10T74/18296; Y10T74/18304
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
150 words
An adder mechanism comprising a housing, a drive shaft journaled in said housing, a plurality of adder links carried by said housing in side by side relationship spaced from said drive shaft, and adder links each having a thin section and a thick section, a plurality of link actuators in side by side relationship individually connected to said adder links encircling said drive shaft and spanning said space between said drive shaft and said adder links, adder spacers interposed between said adder links and carried in said housing in said selected position for connecting selected sections, means associated with said drive shaft and said link actuators for urging said link actuators and said adder links to a selected effective position for said thin and thick section of said adder links, and output means responsive to the total dimension of said adder spacers and said sections in said selected effective position.
Claim 2
Dependent Claim
150 words
An adder mechanism comprising a housing, a drive shaft journaled in said housing, a plurality of adder links carried by said housing in side by side relationship spaced from said drive shaft, and adder links each having a thin section and a thick section, a plurality of link actuators in side by side relationship individually connected to said adder links encircling said drive shaft and spanning said space between said drive shaft and said adder links, adder spacers interposed between said adder links and carried in said housing in said selected position for connecting selected sections, means associated with said drive shaft and said link actuators for urging said link actuators and said adder links to a selected effective position for said thin and thick section of said adder links, and output means responsive to the total dimension of said adder spacers and said sections in said selected effective position.
Claim 3
Dependent Claim
140 words
An adder mechanism as claimed in claim 1 wherein said means for urging said link actuators includes: a. a plurality of drive collars supported on said drive shaft to rotate therewith and selectively axially shiftable along said drive shaft between two locations, said drive collars being interposed between said link actuators, said drive collars having at least one tooth projecting therefrom internally of said link actuators; b. said link actuators having a pair of oppositely disposed and axially spaced teeth on an internal surface thereof for selective engagement with said tooth of said drive collar depending upon said selected axial location of said drive collar whereby said link actuator is urged by the selective engagement of said teeth to a selected position; and, c. means for selectively axially shifting said drive collar along said drive shaft between said two locations.
Claim 4
Dependent Claim
216 words
In a sewing machine having a frame, a needle bar gate supported in said frame for lateral oscillation, a needle bar supported in said gate for endwise reciprocation, drive means including means to drive said needle bar in endwise reciprocation, and means for driving said needle bar gate in lateral oscillation said means including: An adder mechanism having a housing supported in said sewing machine frame, a drive shaft journaled in said housing driven by said sewing machine drive means, a plurality of adder links carried by said housing spaced from said drive shaft, said adder links each having a thin sectioN and a thick section, a plurality of link actuators individually connected to said adder links encircling said drive shaft and spanning said space between said drive shaft and said adder links, adder spacers interposed between said adder links and carried in said housing in a selected effective position for connecting selected sections, means associated with said drive shaft and said link actuators for urging said link actuators and said adder links to a selected position for said thin and thick sections of said adder links, and output means responsive to the total dimension of said adder spacers and said sections in said selected effective position for driving said needle bar gate in lateral oscillation.
Claim 5
Dependent Claim
216 words
In a sewing machine having a frame, a needle bar gate supported in said frame for lateral oscillation, a needle bar supported in said gate for endwise reciprocation, drive means including means to drive said needle bar in endwise reciprocation, and means for driving said needle bar gate in lateral oscillation said means including: An adder mechanism having a housing supported in said sewing machine frame, a drive shaft journaled in said housing driven by said sewing machine drive means, a plurality of adder links carried by said housing spaced from said drive shaft, said adder links each having a thin sectioN and a thick section, a plurality of link actuators individually connected to said adder links encircling said drive shaft and spanning said space between said drive shaft and said adder links, adder spacers interposed between said adder links and carried in said housing in a selected effective position for connecting selected sections, means associated with said drive shaft and said link actuators for urging said link actuators and said adder links to a selected position for said thin and thick sections of said adder links, and output means responsive to the total dimension of said adder spacers and said sections in said selected effective position for driving said needle bar gate in lateral oscillation.
Claim 6
Dependent Claim
241 words
In a sewing machine as claimed in claim 3, said sewing machine further including a feed system for feeding work material through said sewing machine wherein said adder mechanism includes a second plurality of adder links carried in said housing spaced from said drive shaft, said second plurality of adder links each having a thin section and a thick section, a second plurality of link actuators individually connected to said second plurality of adder links encircling said drive shaft and spanning said space between said drive shaft and said second plurality of adder links, means associated with said drive shaft and said link actuators for urging said second plurality of link actuators and adder links to a selected position for said thin and thick sections of said adder links, adder spacers interposed between said second plurality of adder links and carried in said housing in said selected effective position for connecting selected sections, a fixed adder spacer means between said first plurality of adder links and said second plurality of adder link output means responsive to the total dimension of said adder spacers and said sections in said selected effective position for the second plurality of adder links for controlling said sewing machine feed system, and output means responsive to the total dimension of said adder spacers and said sections in said selected effective position for the first plurality of link adders for driving said needle bar gate in lateral oscillation.
References Cited (Backward Citations)
US3881433A
Cited
US3812729A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-12-29 | 1979-06-30 | 1979-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-29 | 1983-06-30 | 1983-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-29 | 1987-06-30 | 1987-12-30 | $7700.00 | Window Closed / Lapsed |