US2302390A - Guard device for sewing machines - Google Patents
Guard device for sewing machines Download PDFInfo
- Publication number
- US2302390A US2302390A US356748A US35674840A US2302390A US 2302390 A US2302390 A US 2302390A US 356748 A US356748 A US 356748A US 35674840 A US35674840 A US 35674840A US 2302390 A US2302390 A US 2302390A
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- US
- United States
- Prior art keywords
- loop
- taker
- guard
- plate
- throat
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- Expired - Lifetime
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- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B83/00—Guards or like devices for preventing injury to operator
Definitions
- This invention relates to guards for sewing machines, and more particularly to a sewing machine provided with a trimmer mechanism and having a loop-taker rotating about an axis substantially parallel to the path of needle-reciprocation.
- the primary object of this invention is t provide means obvating fouling of the loop-taker of a sewing machine by trimmed-ori portions of the work, and especially in a sewing machine in which the work is trimmed close to the point of stitch-formation.
- Fig. l is a top plan view of a portion c-f the bed-plate of a sewing machine containing the improved guard device, the usual bed-slide being removed and the movable trimmer-knife being shown in section.
- Fig. 2 is a front side elevation, partly in vertical section, of the loop-taker bracket, trimmer-knife and feed-dog as associated in the machine, the section being taken substantially on the line 2 2 of Fig, l.
- Fig. 3 represents a perspective view of the loop-taker and feed-dog guard, shown partly broken away.
- Fig. 4 is a bottom plan view of the throat-plate and attached ledger-blade.
- Fig. represents a perspective view of the throat-plate ⁇ with the ledgerblade omitted.
- the sewing machine has the usual work-support o-r bed-plate I provided with an opening 2 overhung by a throatplate 3; the throat-plate being secured at its opposite ends upon the bed-plate I by screws 4.
- the throat-plate 3 is provided with an aperture 5 to receive the usual vertically reciprocatory eyepointed needle 6, said throat-plate also having feed-slots 1 thro-ugh which the feed-dog 3 is upwardly projected to advance the work.
- the throat-plate 3 is formed or cut away to provide a depression 9 in the upper face of the throat-plate directly in front of the needle-aperture 5.
- the depression 9 of the throat-plate is adapted to receive the delivery end of a transverse binder (not shown), of any usual or suitable construction.
- the side portion of the throatplate directly in front of the depression 9 is cut away to provide an edge-wall I0 extending transversely of the line of seam formation and dening the rearward portion of a clearance recess II in the side edge of the throat-plate 3.
- the front end portion of the throat-plate 3 is recessed to receive the shank of a ledger-blade plate I2 secured upon the throat-plate by the front throat-plate securing screw 4.
- the plate I2 has a ledger-blade I4 overlying the side margin of the throat-plate directly adjacent the feeddog 8 and extending rearwardly to the throatplate recess II.
- the outer edge of the ledger-blade I4 at the rearward end thereof extends 4substantially parallel to the line of seam formation, and coacting with said edge in severing work is a movable trimmer-knife I5 attached to a carrier-arm I6 which may be actuated in any usual or suitable manner. It will therefore be understood that the trimmer-knife acts to sever the work closely in front of the needle and at one side of the line of seam formation.
- a loop-taker I'I of the verticalaxis rotary hook type i. e., of the type in which the axis of rotation of the loop-taker is substantially parallel to the path of reciprocation of the needle.
- the loop-taker I'I has the usual upwardly open cup-shaped body provided in the cylindrical side wall thereof with a needle-thread loop seizing beak I8. suitably journaled in the loop-taker I'I and restrained against rotation therewith is an upwardly open bobbin-holder I9 receiving a bobbin 2i).
- the bobbin 20 is removably retained in the holder I9 by a latch 2
- the loop-taker I1 is rotated about a vertical axis by actuating mechanism in part carried by a bracket or hook-saddle 22, the loop-taker I1 being disposed above the upper face 22 of the hook-saddle and partly underlying the throatplate 3.
- the hook-saddle 22 is disposed below the bed-plate, and in the present case the looptaker and hook-saddle are similar to those disclosed in the U. S. patent to W. Myers, No. 2,095,- 450, Oct. 12, 1937.
- the present invention relates more particularly to the provision of means for guarding the loop-taker Il, which ro-tates at high speed during the operation of the machine, from entrance and entanglement by trimmed-off work-margins which are deflected downwardly through an opening 23 provided in the bed-plate I in front of the loop-taker.
- a stationary segmental guard-member having a curved side wall 24 conforming in curvature to and encompassing the front portion of the cylindrical side wall of the loop-taker I1 in close proximity thereto.
- a supporting shank 25 Extending outwardly from the lower portion of the side wall v24 of the guard-member is a supporting shank 25 which is apertured to receive screws 26 for rigidly securing the guard-member upon the upper face 22 of the hook-saddle 22.
- the curved side wall of the guard-member is provided at the upper edge thereof with an inwardly extending flange 2l overhanging a segmental portion of the rim of the loop-taker I1 and of the bobbin-holder I9, said flange 21 exposing the bobbin'20 for removal thereof.
- the guard-flange 21 is provided in the horizontally flat upper face thereof with a notched recess 28 affording access to the upper rim of the bobbin.
- the under face 21 of the guard-flange is preferably inclined downwardly from the inner free edge of said ilange to add to the rigidity f the guard-member.
- the upper face of the flange 2 thereof is partly cut away to provide a transverse shoulder 29 and a depressed land Sll.
- the flange-land 30 underlies the throat-plate depression 9, as illustrated by dotted lines in Fig l of the drawing.
- the guard-wing 3i is also disposed closely adjacent to the portion of the feed-dog 8 in advance of the needle and at the trimmer side of said feed-dog, thereby to guard the feed-dog from engagement by trimmed-off portions of the work.
- the guard-ange shoulder 29 extends transversely of the line of seam formation into the throat-plate recess Il, the upper edge of the shoulder 2i) being substantially even with the upper face of the throat-plate depression 9. It will therefore be understood that the guard described eifectively shields the loop-taker Il and feed-dog 8 from entanglement by trimmed-off portions of the work, thus permitting the trimming operation to be performed closely in front -of the needle and thereby facilitating the handling of the work, without interfering with the operation of the loop-taker 'l or the removal of the bobbin 2 therefrom.
- a sewing machine having a work-support including a throat-plate provided with a feedslot and a needle-aperture, an endwise reciprocatory needle, a loop-taker rotating about an axis substantially parallel to the path of needlereciprocation, a hook-saddle bracket supporting said loop-taker, and a feed-dog operating through said feed-slot, said work-support having an opening in front of said loop-taker, the improvement which consists in the provision below said work-support of a guard-member extending across the front of said loop-taker and having a wing disposed adjacent said feed-dog forwardly of' said needle-aperture, said wing extending substantially parallel to the line of seam formation, and said guard-member being supported by said hook-saddle bracket.
- a sewing machine having a work-suppor including a throat-plate provided with a needleaperture and a feed-slot, an endwise .recip-roeatery needle, a loop-taker rotating about an axis substantially parallel to the path of needlereciprocaticn, a work-advancing feed-dog operating through said throat-plate feed-slot, a ledger-blade carried by said throat-plate, and a trimmer-knife coacting with said ledger-blade in advance of said needle-aperture in the throatplate, the improvement which consists in the provision of means for shielding said loop-taker and feed-dog from entanglement by trimmed-01T portions of the work, said means comprising a guard-member having a segmental side-wall partially encompassing said loop-taker in close proximity thereto and having a flange overhanging said loop-taker, said guard-member extending under said throat-plate and having a substantially tangential wing extending forwardly therefrom adjacent to
- a loop-taker and feed-dog shielding guardmember for sewing machines having a segmental side wall provided with an attaching shank and with an inwardly overhanging flange, said side wall having a substantially tangential Wing eX- tending from one end of and disposed adjacent to said side wall.
- a loop-taker and feed-dog shielding guardmember for sewing machines having a segmental side wall provided with an inwardly overhanging fiange, said fiange being partly cut away in its upper face at one end thereof to implemente an abutment-shoulder, and a wing extending substantially tangentially from the abutment shoulder end of said guard-member and disposed adjacent to said side wall.
Description
H. c. NlssEN 2,302,390
GUARD DEVICE FOR SEWING MACHINES Nov. 17, 1942.
Filed Slept. 14, 1940 H-ny a Nissen Patented Nov. 17, 1942 GUARD DEVICE FOR SEWING MACHINES Henry C. Nissen, Stratford,
The Singer Manufacturing Company,
Conn., assigner to Elizabeth, N. J., a corporation of New Jersey Application September 14, 1940, Serial No. 356,748
(Cl. 11B-261) S Claims.
This invention relates to guards for sewing machines, and more particularly to a sewing machine provided with a trimmer mechanism and having a loop-taker rotating about an axis substantially parallel to the path of needle-reciprocation.
The primary object of this invention is t provide means obvating fouling of the loop-taker of a sewing machine by trimmed-ori portions of the work, and especially in a sewing machine in which the work is trimmed close to the point of stitch-formation.
Other and more speciiic objects of the invention will be apparent from the following description and claims.
The invention consists in the guard device as hereinafter described in connection with the accompanying drawing which illustrates a preferred embodiment of the invention and in which:
Fig. l is a top plan view of a portion c-f the bed-plate of a sewing machine containing the improved guard device, the usual bed-slide being removed and the movable trimmer-knife being shown in section. Fig. 2 is a front side elevation, partly in vertical section, of the loop-taker bracket, trimmer-knife and feed-dog as associated in the machine, the section being taken substantially on the line 2 2 of Fig, l. Fig. 3 represents a perspective view of the loop-taker and feed-dog guard, shown partly broken away. Fig. 4 is a bottom plan view of the throat-plate and attached ledger-blade. Fig. represents a perspective view of the throat-plate` with the ledgerblade omitted.
Referring to the drawing, the sewing machine has the usual work-support o-r bed-plate I provided with an opening 2 overhung by a throatplate 3; the throat-plate being secured at its opposite ends upon the bed-plate I by screws 4. The throat-plate 3 is provided with an aperture 5 to receive the usual vertically reciprocatory eyepointed needle 6, said throat-plate also having feed-slots 1 thro-ugh which the feed-dog 3 is upwardly projected to advance the work.
The throat-plate 3 is formed or cut away to provide a depression 9 in the upper face of the throat-plate directly in front of the needle-aperture 5. The depression 9 of the throat-plate is adapted to receive the delivery end of a transverse binder (not shown), of any usual or suitable construction. The side portion of the throatplate directly in front of the depression 9 is cut away to provide an edge-wall I0 extending transversely of the line of seam formation and dening the rearward portion of a clearance recess II in the side edge of the throat-plate 3.
The front end portion of the throat-plate 3 is recessed to receive the shank of a ledger-blade plate I2 secured upon the throat-plate by the front throat-plate securing screw 4. The plate I2 has a ledger-blade I4 overlying the side margin of the throat-plate directly adjacent the feeddog 8 and extending rearwardly to the throatplate recess II.
The outer edge of the ledger-blade I4 at the rearward end thereof extends 4substantially parallel to the line of seam formation, and coacting with said edge in severing work is a movable trimmer-knife I5 attached to a carrier-arm I6 which may be actuated in any usual or suitable manner. It will therefore be understood that the trimmer-knife acts to sever the work closely in front of the needle and at one side of the line of seam formation.
Complemental to the needle 6 in the formation of lock-stitches is a loop-taker I'I of the verticalaxis rotary hook type, i. e., of the type in which the axis of rotation of the loop-taker is substantially parallel to the path of reciprocation of the needle. The loop-taker I'I has the usual upwardly open cup-shaped body provided in the cylindrical side wall thereof with a needle-thread loop seizing beak I8. suitably journaled in the loop-taker I'I and restrained against rotation therewith is an upwardly open bobbin-holder I9 receiving a bobbin 2i). The bobbin 20 is removably retained in the holder I9 by a latch 2| and the thread wound upon the bobbin is interlocked with the needle-thread in the formation of stitches.
The loop-taker I1 is rotated about a vertical axis by actuating mechanism in part carried by a bracket or hook-saddle 22, the loop-taker I1 being disposed above the upper face 22 of the hook-saddle and partly underlying the throatplate 3. The hook-saddle 22 is disposed below the bed-plate, and in the present case the looptaker and hook-saddle are similar to those disclosed in the U. S. patent to W. Myers, No. 2,095,- 450, Oct. 12, 1937.
The present invention relates more particularly to the provision of means for guarding the loop-taker Il, which ro-tates at high speed during the operation of the machine, from entrance and entanglement by trimmed-off work-margins which are deflected downwardly through an opening 23 provided in the bed-plate I in front of the loop-taker.
To this end, there is provided a stationary segmental guard-member having a curved side wall 24 conforming in curvature to and encompassing the front portion of the cylindrical side wall of the loop-taker I1 in close proximity thereto. Extending outwardly from the lower portion of the side wall v24 of the guard-member is a supporting shank 25 which is apertured to receive screws 26 for rigidly securing the guard-member upon the upper face 22 of the hook-saddle 22.
The curved side wall of the guard-member is provided at the upper edge thereof with an inwardly extending flange 2l overhanging a segmental portion of the rim of the loop-taker I1 and of the bobbin-holder I9, said flange 21 exposing the bobbin'20 for removal thereof. To facilitate removal of the bobbin 20 from the loop-taker il, the guard-flange 21 is provided in the horizontally flat upper face thereof with a notched recess 28 affording access to the upper rim of the bobbin. The under face 21 of the guard-flange is preferably inclined downwardly from the inner free edge of said ilange to add to the rigidity f the guard-member.
At one end of the guard-member, the upper face of the flange 2 thereof is partly cut away to provide a transverse shoulder 29 and a depressed land Sll. The flange-land 30 underlies the throat-plate depression 9, as illustrated by dotted lines in Fig l of the drawing. Extending substantially tangentially and forwardly from the flange-land 3U, under the throat-plate, is a guard-wing 3|, of which the upper edge is disposed close to the under side of the throat-plate. The guard-wing 3i is also disposed closely adjacent to the portion of the feed-dog 8 in advance of the needle and at the trimmer side of said feed-dog, thereby to guard the feed-dog from engagement by trimmed-off portions of the work.
The guard-ange shoulder 29 extends transversely of the line of seam formation into the throat-plate recess Il, the upper edge of the shoulder 2i) being substantially even with the upper face of the throat-plate depression 9. It will therefore be understood that the guard described eifectively shields the loop-taker Il and feed-dog 8 from entanglement by trimmed-off portions of the work, thus permitting the trimming operation to be performed closely in front -of the needle and thereby facilitating the handling of the work, without interfering with the operation of the loop-taker 'l or the removal of the bobbin 2 therefrom.
Having thus set forth the nature of the invention, what I claim herein is:
1. In a sewing machine having an endwise reciprocatory eye-pointed needle, and a looptaker rotating about an axis substantially parallel to the path of needle-reciprocation, the improvement which consists in the provision of a stationary segmental guard-member partly encompassing said loop-taker in close proximity thereto, said guard-member having a flange overhanging a portion of said loop-taker.
2. In a sewing machine having an endwise reciprooatory eye-pointed needle, and a loop-taker rotating about an axis substantially parallel to f the path of reciprocation of the needle, said looptaker having an upwardly open cup-shaped body, the improvement which consists in the provision of a curved guard-member partially encompassing the cylindrical side wall of said loop-taker body, said guard-member overhanging the rim of said body, and means detachably securing said guard-member in loop-taker shielding position.V
3. In a sewing machine having an endwise reciprocatory eye-pointed needle, a loop-taker rotating about an axis substantially parallel to the path of needle-reciprocation, and a hook- ;saddle bracket in which said loop-taker is rotatably journaled, the improvement which consists in the provision of a loop-taker shielding guardmember partially encompassing said loop-taker, said guard-member being detachably secured upon said bracket.
il. In a sewing machine having an endwise reciprocatory eye-pointed needle, a loop-taker rotating about an axis substantially parallel to the path of needle-reciprocation, and a hooksaddle bracket supporting said loop-taker, the improvement which consists in the provision of a loop-taker shielding guard-member having a side wall provided with a flange overhanging said loop-taker, said guard-member having a shank detachably secured upon said bracket.
5. In a sewing machine having a work-support including a throat-plate provided with a feedslot and a needle-aperture, an endwise reciprocatory needle, a loop-taker rotating about an axis substantially parallel to the path of needlereciprocation, a hook-saddle bracket supporting said loop-taker, and a feed-dog operating through said feed-slot, said work-support having an opening in front of said loop-taker, the improvement which consists in the provision below said work-support of a guard-member extending across the front of said loop-taker and having a wing disposed adjacent said feed-dog forwardly of' said needle-aperture, said wing extending substantially parallel to the line of seam formation, and said guard-member being supported by said hook-saddle bracket. i
6. In a sewing machine having a work-suppor including a throat-plate provided with a needleaperture and a feed-slot, an endwise .recip-roeatery needle, a loop-taker rotating about an axis substantially parallel to the path of needlereciprocaticn, a work-advancing feed-dog operating through said throat-plate feed-slot, a ledger-blade carried by said throat-plate, and a trimmer-knife coacting with said ledger-blade in advance of said needle-aperture in the throatplate, the improvement which consists in the provision of means for shielding said loop-taker and feed-dog from entanglement by trimmed-01T portions of the work, said means comprising a guard-member having a segmental side-wall partially encompassing said loop-taker in close proximity thereto and having a flange overhanging said loop-taker, said guard-member extending under said throat-plate and having a substantially tangential wing extending forwardly therefrom adjacent to said feed-dog, and means for detachably supporting said guard-member in loop-taker and feed-dog shielding position.
7. A loop-taker and feed-dog shielding guardmember for sewing machines, having a segmental side wall provided with an attaching shank and with an inwardly overhanging flange, said side wall having a substantially tangential Wing eX- tending from one end of and disposed adjacent to said side wall.
8. A loop-taker and feed-dog shielding guardmember for sewing machines, having a segmental side wall provided with an inwardly overhanging fiange, said fiange being partly cut away in its upper face at one end thereof to denne an abutment-shoulder, and a wing extending substantially tangentially from the abutment shoulder end of said guard-member and disposed adjacent to said side wall.
HENRY C. NISSEN.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US356748A US2302390A (en) | 1940-09-14 | 1940-09-14 | Guard device for sewing machines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US356748A US2302390A (en) | 1940-09-14 | 1940-09-14 | Guard device for sewing machines |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US2302390A true US2302390A (en) | 1942-11-17 |
Family
ID=23402783
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US356748A Expired - Lifetime US2302390A (en) | 1940-09-14 | 1940-09-14 | Guard device for sewing machines |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US2302390A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2604863A (en) * | 1948-04-10 | 1952-07-29 | American Mach & Foundry | Special stitch sewing machine |
| US4111136A (en) * | 1977-06-30 | 1978-09-05 | Abram N. Spanel | Yarn clamping apparatus |
-
1940
- 1940-09-14 US US356748A patent/US2302390A/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2604863A (en) * | 1948-04-10 | 1952-07-29 | American Mach & Foundry | Special stitch sewing machine |
| US4111136A (en) * | 1977-06-30 | 1978-09-05 | Abram N. Spanel | Yarn clamping apparatus |
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