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US3841247A
Expired / Lapsed
US
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Semiautomatic belt loop sewing system
Assignee: Haggar Co
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Filing: 1973-09-07
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Granted: 1974-10-15
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Expires: 1993-09-07
Abstract
Abstract In a semiautomatic belt loop sewing system, a sewing machine includes a sewing needle supported for reciprocation along a fixed, vertically disposed axis and a cloth plate positioned generally beneath the sewing needle for oscillation in a horizontal plane. By this means, the reverse side of the upper end of a belt loop is initially sewn to the upper portion of a garment waistband. The belt loop is then folded forwardly, downwardly, and finally inwardly, after which the lower end of the belt loop is sewn to the lower portion of the waistband. The belt loop is initially positioned relative to the sewing needle by a loop guide assembly mounted on the cloth plate of the sewing machine. By this means the entire belt loop and the portion of the garment waistband which is to receive the belt loop are oscillated in unison with the cloth plate of the sewing machine, whereby the sewing operation is carried out without twisting the belt loop. The loop chute assembly includes a belt loop guide chute, air jets for advancing the belt loop along the guide chute, a belt loop stop depending from the face plate of the sewing machine for terminating the advance of the belt loop when it is properly positioned relative to the sewing needle, and a loop positioning finger for positioning the belt loop laterally with respect to the sewing needle.
Inventors
- 👤 J Off
- 👤 D Wilbanks
- 👤 W Willcox
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:07
CPC Classifications
D; D05; D05B; D05B35/00; D05B35/06; D05B35/066; D05B35/068
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
152 words
A semiautomatic belt loop sewing system comprising: a sewing machine including a sewing needle supported for reciprocation along a fixed substantially vertically extending axis and a cloth plate positioned generally beneath the sewing needle for oscillation in a substantially horizontally disposed plane; a belt loop guide chute mounted on the cloth plate for oscillation therewith; means for advancing a belt loop along the belt loop guide chute and into a sewing position wherein the axis of reciprocation of the needle passes through the belt loop; means for receiving the waistband of a garment and for positioning the waistband on the cloth plate of the sewing machine and in a sewing position wherein the axis of reciprocation of the needle passes through the waistband; whereby both the belt loop and the waistband oscillate with the cloth plate as the belt loop is sewn to the wasitband under the action of the sewing needle.
Claim 2
Dependent Claim
152 words
A semiautomatic belt loop sewing system comprising: a sewing machine including a sewing needle supported for reciprocation along a fixed substantially vertically extending axis and a cloth plate positioned generally beneath the sewing needle for oscillation in a substantially horizontally disposed plane; a belt loop guide chute mounted on the cloth plate for oscillation therewith; means for advancing a belt loop along the belt loop guide chute and into a sewing position wherein the axis of reciprocation of the needle passes through the belt loop; means for receiving the waistband of a garment and for positioning the waistband on the cloth plate of the sewing machine and in a sewing position wherein the axis of reciprocation of the needle passes through the waistband; whereby both the belt loop and the waistband oscillate with the cloth plate as the belt loop is sewn to the wasitband under the action of the sewing needle.
Claim 3
Dependent Claim
65 words
The semiautomatic belt loop sewing system according to claim 1 wherein the belt loop advancing means further comprises: air jet means for advancing a belt loop along the belt loop guide; and belt loop stop means for terminating movement of the belt loop along the belt loop guide under the action of the air jet means when the belt loop is in the sewing position.
Claim 4
Dependent Claim
25 words
The semiautomatic belt loop sewing system according to claim 2 wherein the belt loop stop is pivotally supported on the frame of the sewing machine.
Claim 5
Dependent Claim
60 words
The semiautomatic belt loop sewing system according to claim 3 wherein the waistband positioning means comprises: gripping apparatus for receiving the waistband of the garment in a substantially taut condition; and means for displacing the gripping mechanisms inwardly to provide sufficient slack in the waistband to accommodate oscillation thereof under the action of the cloth plate of the sewing machine.
Claim 6
Dependent Claim
107 words
The semiautomatic belt loop sewing system according to claim 2 further characterized by: a locating surface disposed along one edge of the belt loop chute; slot means formed in the belt loop chute and extending substantially transversely with respect thereto; a belt loop positioning finger mounted for reciprocation in the slot means; means for withdrawing the belt loop positioning finger from the slot means during movement of a belt loop in the belt loop chute under the action of the air jet means; and means for thereafter reciprocating the belt loop positioning finger into the slot means and thereby engaging the belt loop with the locating surface.
Claim 7
Dependent Claim
57 words
The semiautomatic belt loop sewing system according to claim 1 further including means mounted on the cloth plate of the sewing machine for reciprocation with the belt loop guide chute for activation following the sewing of the belt loop to the waistband of the garment to pull the belt loop out of the belt loop guide chute.
Claim 8
Dependent Claim
243 words
A semiautomatic belt loop sewing system comprising: a sewing machine including a sewing needle supported for reciprocation along a fixed, substantially vertically extending axis and a cloth plate positioned generally beneath the sewing needle for oscillation in a substantially horizontally disposed plane; means for receiving a portion of a garment waistband which is to receive a belt loop and for locating the portion of the waistband on the cloth plate of the sewing machine and in the path of reciprocation of the sewing needle; a belt loop guide chute mounted on the cloth plate of the sewing machine for oscillation therewith; means for advancing a belt loop along the belt loop guide chute and for terminating the movement of the belt loop at a position wherein the belt loop overlies the cloth plate of the sewing machine and is in the path of reciprocation of the sewing needle; whereby the portion of the waistband and the entire belt loop are oscillated in unison with the cloth plate of the sewing machine relative to the sewing needle thereof to effect the motion necessary to complete sewing of the belt loop to the waistband without twisting of the belt loop as it is sewn to the waistband. 8. The semiautomatic belt loop sewing system according to claim 7 further including means mounted on the cloth plate for oscillation therewith for pulling the belt loop out of the belt loop guide chute following the sewing cycle.
Claim 9
Dependent Claim
106 words
The semiautomatic sewing system according to claim 7 further characterized by: a belt loop locating surface extending along one edge of the belt loop guide chute; a slot formed in the belt loop guide chute and extending substantially transversely with respect thereto; a belt loop positioning finger mounted for reciprocation in the slot; means for reciprocating the belt loop positioning finger out of the slot during advancement of the belt loop therealong; and; means for thereafter moving the belt loop positioning finger into the slot and into engagement with the belt loop and thereby positioning the belt loop in engagement with the belt loop locating surface.
Claim 10
Dependent Claim
52 words
The semiautomatic belt loop sewing system according to claim 7 further characterized by a member depending from the face plate of the sewing machine for terminating the advance of the belt loop through the belt loop chute when the belt loop is positioned in the path of reciprocation of the sewing needle.
Claim 11
Dependent Claim
49 words
The semiautomatic belt loop sewing system according to claim 7 wherein the means for advancing the belt loop through the belt loop guide chute comprises air jet means disposed in the belt loop guide chute and adapted to advance the belt loop into engagement with the belt loop stop.
Claim 12
Dependent Claim
59 words
The semiautomatic belt loop sewing sYstem according to claim 7 wherein the means for receiving and positioning the waistband of the garment is further characterized by means for receiving the waistband in a substantially taut condition, and means for thereafter providing sufficient slack in the waistband to accommodate the oscillatory movement of the cloth plate of the sewing machine.
Claim 13
Dependent Claim
198 words
In a semiautomatic belt loop sewing system of the type including a sewing machine having a sewing needle mounted for reciprocation along a fixed, substantially vertically extending axis and a cloth plate disposed generally beneath the sewing needle for oscillatory movement to effect the relative motion necessary to sew a belt loop to the waistband of a garment and apparatus for positioning a portion of a garment waistband in a sewing position wherein the axis of reciprocation of the sewing needle of the sewing machine extends through the point on the waistband which is to receive the belt loop, the improvement comprising: belt loop guide means mounted on the cloth plate of the sewing machine for receiving a belt loop and for advancing a belt loop to a sewing position wherein the axis of reciprocation of the sewing needle of the sewing machine extends through the point on the belt loop which is to be attached to the waistband of the garment; whereby during operation of the sewing needle to sew the belt loop onto the waistband, both the belt loop and the portion of the waistband oscillate in unison with the cloth plate of the sewing machine.
Claim 14
Dependent Claim
198 words
In a semiautomatic belt loop sewing system of the type including a sewing machine having a sewing needle mounted for reciprocation along a fixed, substantially vertically extending axis and a cloth plate disposed generally beneath the sewing needle for oscillatory movement to effect the relative motion necessary to sew a belt loop to the waistband of a garment and apparatus for positioning a portion of a garment waistband in a sewing position wherein the axis of reciprocation of the sewing needle of the sewing machine extends through the point on the waistband which is to receive the belt loop, the improvement comprising: belt loop guide means mounted on the cloth plate of the sewing machine for receiving a belt loop and for advancing a belt loop to a sewing position wherein the axis of reciprocation of the sewing needle of the sewing machine extends through the point on the belt loop which is to be attached to the waistband of the garment; whereby during operation of the sewing needle to sew the belt loop onto the waistband, both the belt loop and the portion of the waistband oscillate in unison with the cloth plate of the sewing machine.
Claim 15
Dependent Claim
48 words
The improvment according to claim 13 wherein the belt loop guide means comprises a belt loop guide chute secured to the cloth plate of the sewing machine and air jet means disposed in the belt loop guide chute for advancing the belt loop therealong to the sewing position.
Claim 16
Dependent Claim
51 words
The improvement according to claim 14 further characterized by belt loop stop means depending from the face plate of the sewing machine for terminating movement of the belt loop along the belt loop chute under the action of the air jet means when the belt loop is in the sewing position.
Claim 17
Dependent Claim
52 words
The improvement according to claim 13 further characterized by: a locating surface extending along one edge of the belt loop guide chute; and means for urging the belt loop into engagement with the locating surface and thereby positioning the belt loop laterally with respect to the sewing needle of the sewing machine.
Claim 18
Dependent Claim
96 words
The improvement according to claim 16 wherein the means for urging the belt loop into engagement with the locating surface comprises a slot formed in the belt loop guide chute and extending generally transversely with respect thereto, a belt loop positioning finger for reciprocation in the slot, means for withdrawing the belt loop positioning finger from the slot during the advance of the belt loop therethrough under the action of the air jet means, and means for thereafter moving the belt loop positioning finger into the slot and into engagement with the belt loop disposed therein.
Claim 19
Dependent Claim
134 words
A process for sewing a belt loop to a garment waistband which comprises: reciprocating a sewing needle along a fixed, substantially horizontally disposed axis; simultaneously oscillating a portion of a garment waistband in a generally horizontally disposed plane intersecting the axis of reciprocation of the sewing needle and with the portion of the waistband that is to receive the belt loop positioned in the path of the sewing needle and thereby effecting the relative motion necessary to complete the sewing operation; and simultaneously oscillating an entire belt loop in unison with the portion of the waistband and with the portion of the belt loop that is to be sewn to the waistband positioned in the path of the sewing needle and thereby sewing the belt loop to the waistband without twisting the belt loop.
Claim 20
Dependent Claim
134 words
A process for sewing a belt loop to a garment waistband which comprises: reciprocating a sewing needle along a fixed, substantially horizontally disposed axis; simultaneously oscillating a portion of a garment waistband in a generally horizontally disposed plane intersecting the axis of reciprocation of the sewing needle and with the portion of the waistband that is to receive the belt loop positioned in the path of the sewing needle and thereby effecting the relative motion necessary to complete the sewing operation; and simultaneously oscillating an entire belt loop in unison with the portion of the waistband and with the portion of the belt loop that is to be sewn to the waistband positioned in the path of the sewing needle and thereby sewing the belt loop to the waistband without twisting the belt loop.
Claim 21
Dependent Claim
46 words
The belt loop sewing process according to claim 18 further characterized by positioning the portion of the waistband on a cloth plate supported for oscIllation relative to the sewing needle and supporting the belt loop in a belt loop guide chute mounted on the cloth plate.
Claim 22
Dependent Claim
62 words
The belt loop sewing process according to claim 19 further characterized by the preliminary stop of advancing the belt loop along the belt loop chute and terminating the advance of the belt loop in the belt loop chute when the portion of the belt loop which is to be sewn to the waistband is positioned in the path of the sewing needle.
Claim 23
Dependent Claim
31 words
The belt loop sewing process according to claim 20 further characterized by the step of positioning the belt loop laterally with respect to the sewing needle prior to the oscillating step.
Claim 24
Dependent Claim
70 words
The belt loop sewing process according to claim 21 wherein the belt loop advancing and positioning steps are further characterized by first advancing the belt loop along the belt loop chute and into engagement with a belt loop stop under the action of air jets disposed in the belt loop chute and then engaging the belt loop with a locating surface depending along one edge of the belt loop chute.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-10-14 | 1978-04-15 | 1978-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-14 | 1982-04-15 | 1982-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-14 | 1986-04-15 | 1986-10-15 | $7700.00 | Window Closed / Lapsed |