US1182712A - Feeding mechanism for sewing-machines. - Google Patents
Feeding mechanism for sewing-machines. Download PDFInfo
- Publication number
- US1182712A US1182712A US87184114A US1914871841A US1182712A US 1182712 A US1182712 A US 1182712A US 87184114 A US87184114 A US 87184114A US 1914871841 A US1914871841 A US 1914871841A US 1182712 A US1182712 A US 1182712A
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- Prior art keywords
- shaft
- feed
- rock
- sewing
- machines
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- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B27/00—Work-feeding means
- D05B27/22—Work-feeding means with means for setting length of stitch
Definitions
- My invention relates to sewing machine feed mechanism of the so-called four motion type, and has for its object to provide an improved feed mechanism of this type that will be simple in construction, capable of convenient and accurate adjustment in varying the length of feed stroke, and operative in all of its adjustments with a minimum degree of and vibration whereby to assure ease and smoothness in its operation.
- Figure 1 is a bottom plan view of the bed-plate of a sewing machine embodying my invention, with the shuttle mechanism broken away to give a clearer view of the feed device proper.
- Fig. 2 is a transverse section taken on the line 22 of Fig. 1, showing the position of certain of the parts with the feed-adjusting lever set for a maximum length of stitch.
- Fig. 3 is a corresponding view, showing the position of the parts with the feed-adjusting lever set for the minimum length of stitch
- Fig. 4 is a transverse section taken on the line 4Eat of Fig. 1.
- the feed device which as before stated is of the so-called four motion type, comprises the usual toothed or serrated workengaging feed-dog 2 mounted on an arm 3 of a frame 4 which is pivotally connected, as by means of bearing screws 5, 5, with a To this end the invention consists in the pair of vertically arranged rock-arms 6, 6, on a rock-shaft 7, which latter is journaled on bearings 8, 8, in a position lengthwise of the bed-plate as shown.
- the frame 4 is supported at its free end, that is, the end which carries the feed-dog, by means of an arm 9 of the frame resting upon a cam 10 on the rotary shuttle or looper drive shaft 11, as clearly shown in Figs. 1 and 4. l/Vith this arrangement of parts, the
- cam 10 actuates the frame 1 to impart the hanger 1 1 at the under side of the bed-plate and is formed with a forked arm 15 embracing a cam 16 on the drive shaft, from which cam the lever receives a rocking movement.
- the second arm of said bell-crank lever, indicated at 17, is connected through the medium of a pair of toggle links 18, 18, with a horizontally arranged rock arm 19 on the shaft 7, these toggle links being arranged in substantially right-angular relation to each other as shown.
- a link 20 connects at one end with the toggle links at their joint and at its opposite end connects with an adjustable fulcrum 21 carried by a so-called feed adjusting lever 22, which latter is mounted on a stationary pivot 23 with its operating end projecting upwardly through a slot in the bed-plate to a position above the latter where it is provided with a clamping-nut 2 1 for coacting with an. arc-plate 25 to secure the lever with its supported fulcrum 21 in adjusted position.
- the combination with the feed device and means for imparting vertical movement thereto, of means for imparting horizontal movement to said feed device comprising a rock-shaft and a driveshaft both arranged at the under side of the bed-plate and parallel with each other, the rock-shaft having rock arms one of which is jointed to the feed device and the drive-shaft having an actuating cam, a lever mounted on a stationary pivot below the bed-plate and having operative connection with said cam on the drive-shaft to be rocked thereby, a pair of toggle links connecting said lever with an arm of the rock-shaft,
- a feed-adjusting lever a link connecting at one end with the toggle links at their joint and at its opposite end fulcrumed on said feed-adjusting lever, and means cooperating with the latter to hold same with'its said fulcrum in stationary adjusted position, for the purpose set forth.
- the combination with the feed device and means for imparting vertical movement thereto, of means for imparting horizontal movement to said feed device comprising a rockshaft and a drive-shaft both arranged at the under side of the bed-plate and parallel with each other, the rock-shaft having rock arms one of which is jointed to the feed device and the drive-shaft having an actuating cam, a
- bell-crank lever mounted on a stationary pivot below the bed-plate and having a forked arm embracing said cam on the drive shaft to be rocked thereby, a pair of toggle links arranged in substantially right-angular relation and connecting the second arm of said bell-crank lever with an arm of the rock-shaft, a feedadjusting lever, a link connecting at one end with the toggle links at their joint and at its opposite end fulcrumed on said feed-adjusting lever, and means cooperating with the latter to hold same with its said fulcrum in stationary adjusted position for the purpose set forth.
Description
W. RUCKSTUHL.
FEEDING MECHANISM FOR SEWING MACHINES.
APPLICATION FILED NOV. i2, 1914.
1, 182,71 2. Patented May 9, 1916.
2 3HEETSSHEET I.
-4 IIHIIIINW I I I WI T/I/ESSES HI 5 A TTORNEY W. RUCKSTUHL.
FEEDING MECHANISM FOR SEWING MACHINES= APPLICATION EiLED NOV. 12. 1914. 1,182,712. Patented May 9,1916.
2 SHEETS-SHEET 2.
l/VVE/VTOR HIS ATTORNEY THE COLUMBIA PLANOGRAPH co TTNTTE SALTS ATENT @FFTQE.
WALTER RUGKSTUHL, OF ORANGE, MASSACHUSETTS, ASSIGNOR TO THE NEW HOME SEWING MACHINE COMPANY, OF ORANGE, MASSACHUSETTS, A CORPORATION OF MASSACHUSETTS.
FEEDING MECHANISM: FOR SEWING-MACHINES.
Specification of Letters Patent.
Patented May 9, 1916.
To all whom it may concern:
Be it known that I, WALTER RUCKSTUHL, a citizen of Switzerland, and resident of Orange, in the county of Franklin and State of Massachusetts, have invented certain new and useful Improvements in Feeding Mechanism for Sewing-Machines, of which the following is a specification.
My invention relates to sewing machine feed mechanism of the so-called four motion type, and has for its object to provide an improved feed mechanism of this type that will be simple in construction, capable of convenient and accurate adjustment in varying the length of feed stroke, and operative in all of its adjustments with a minimum degree of and vibration whereby to assure ease and smoothness in its operation.
novel construction, arrangement and combination of parts hereinafter described and claimed.
Referring now to the accompanying draw ings forming part of this specification and in which I have shown only so much of a sewing machine as is necessary to illustrate my invention,Figure 1 is a bottom plan view of the bed-plate of a sewing machine embodying my invention, with the shuttle mechanism broken away to give a clearer view of the feed device proper. Fig. 2 is a transverse section taken on the line 22 of Fig. 1, showing the position of certain of the parts with the feed-adjusting lever set for a maximum length of stitch. Fig. 3 is a corresponding view, showing the position of the parts with the feed-adjusting lever set for the minimum length of stitch, and Fig. 4 is a transverse section taken on the line 4Eat of Fig. 1.
Similar reference characters indicate like parts on the several figures of the drawings.
In the present case I have shown only so much of the frame of the machine as is comprised by the bed-plate thereof, which is in dicated by the reference numeral 1.
The feed device, which as before stated is of the so-called four motion type, comprises the usual toothed or serrated workengaging feed-dog 2 mounted on an arm 3 of a frame 4 which is pivotally connected, as by means of bearing screws 5, 5, with a To this end the invention consists in the pair of vertically arranged rock-arms 6, 6, on a rock-shaft 7, which latter is journaled on bearings 8, 8, in a position lengthwise of the bed-plate as shown.
The frame 4 is supported at its free end, that is, the end which carries the feed-dog, by means of an arm 9 of the frame resting upon a cam 10 on the rotary shuttle or looper drive shaft 11, as clearly shown in Figs. 1 and 4. l/Vith this arrangement of parts, the
\Vhat I claim is:
1. In a sewing machine, the combination with the feed device and means for imparting vertical movement thereto, of means for imparting horizontal movement to said feed device comprising a rock-shaft and a driveshaft both arranged at the under side of the bed-plate and parallel with each other, the rock-shaft having rock arms one of which is jointed to the feed device and the drive-shaft having an actuating cam, a lever mounted on a stationary pivot below the bed-plate and having operative connection with said cam on the drive-shaft to be rocked thereby, a pair of toggle links connecting said lever with an arm of the rock-shaft,
a feed-adjusting lever, a link connecting at one end with the toggle links at their joint and at its opposite end fulcrumed on said feed-adjusting lever, and means cooperating with the latter to hold same with'its said fulcrum in stationary adjusted position, for the purpose set forth.
2. In a sewing machine, the combination with the feed device and means for imparting vertical movement thereto, of means for imparting horizontal movement to said feed device comprising a rockshaft and a drive-shaft both arranged at the under side of the bed-plate and parallel with each other, the rock-shaft having rock arms one of which is jointed to the feed device and the drive-shaft having an actuating cam, a
bell-crank lever mounted on a stationary pivot below the bed-plate and having a forked arm embracing said cam on the drive shaft to be rocked thereby, a pair of toggle links arranged in substantially right-angular relation and connecting the second arm of said bell-crank lever with an arm of the rock-shaft, a feedadjusting lever, a link connecting at one end with the toggle links at their joint and at its opposite end fulcrumed on said feed-adjusting lever, and means cooperating with the latter to hold same with its said fulcrum in stationary adjusted position for the purpose set forth.
Signed at Orange, in the county of Franklin, and State of Massachusetts, this 6th day of November, A. D. 1914.
YVALTER RUCKSTUHL. lVitnesses:
GEORGE H. BEST, EDGAR E. SAMPSON.
Copies of this patent may be obtained for five cents each, by addressing the Commissioner of latents. Washington, D. C.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US87184114A US1182712A (en) | 1914-11-12 | 1914-11-12 | Feeding mechanism for sewing-machines. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US87184114A US1182712A (en) | 1914-11-12 | 1914-11-12 | Feeding mechanism for sewing-machines. |
Publications (1)
Publication Number | Publication Date |
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US1182712A true US1182712A (en) | 1916-05-09 |
Family
ID=3250682
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US87184114A Expired - Lifetime US1182712A (en) | 1914-11-12 | 1914-11-12 | Feeding mechanism for sewing-machines. |
Country Status (1)
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US (1) | US1182712A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2651274A (en) * | 1950-03-01 | 1953-09-08 | Hohmann Levy Inc | Lock stitch sewing machine under bed mechanism |
-
1914
- 1914-11-12 US US87184114A patent/US1182712A/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2651274A (en) * | 1950-03-01 | 1953-09-08 | Hohmann Levy Inc | Lock stitch sewing machine under bed mechanism |
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