US2521360A

US2521360A - Feeding device

Info

Publication number: US2521360A
Application number: US612447A
Authority: US
Inventors: Gerstein Harry
Original assignee: SPIRAL BAGGING MACHINE CORP
Current assignee: SPIRAL BAGGING MACHINE Corp
Priority date: 1945-08-24
Filing date: 1945-08-24
Publication date: 1950-09-05
Anticipated expiration: 1967-09-05

Description

Sept. 5, 1950 H. GERSTEIN 2,521,360

I FEEDING DEVICE Filed Aug. 24, 1945 2 Sheets-Sheet 1 INVEN TOR.

BY I

H. GERSTEIN FEEDING DEVICE Sept. 5, 1950 2 sheets-sheet 2 Filed Aug. 24, 1945 I N VEN TOR.

Patented Sept. 5, 1950 FEEDING DEVICE Harry Gerstein, New York, N. Y., assignor to Spiral Bagging Machine Corporation, New York, N. Y., a corporation of New York Application August 24, 1945, Serial No. 612,447

7 Claims. (o1. 112-214) An object of the invention is to provide feeding means which is calculated to permit the material to be momentarily stopped in its motion, to be treated, and then to be instantly moved in a substantially continuous manner.

A further object of the invention. resides in the provision of means whereby the material after it is momentarily stopped for treatment may be picked up instantly so that there is no substantial interruption in its even smooth movement through the apparatus.

Further and more specific objects, features, and advantages will more clearly appear from the specification hereinafter especially when taken in connection with the accompanying drawings which illustrate a preferred form which the invention may assume and which form part of the specification.

In brief and general terms the invention relates to a device in which sheet material such as textile webbing is to be fed past a treatment point wherein it is acted upon by any suitable device and to be treated. Such treatment may be merely marking the material, or it may be adhesively connecting adjacent folds of the material, or it may involve sewing adjacent edges of the material together. However, whatever the treatment, it is necessary that, durin the treatment, the material be momentarily stopped in its motion so as to make the treatment effective. For instance, if the treatment involves sewing, it is necessary that the material be stopped long enough for the needle to pass through the material in order that the stitch be properly made and the sewing not be torn or the needle broken.

Therefore the device includes at least one pair of feeding devices disposed beyond the treatment point and disposed on opposite sides of the material to engage with it and pull it past the treatment area. One of these feeding devices is connected to the drive of the treatment means to intermittently stop its motion in synchronism with the intermittent motion of the treatment means, but the other feeding device is connected to a means for driving it which tends to drive it continuously. However, between the 1 second feeding means and its driver, a slip clutch is disposed which permits the second feeding means to stop whenever the first feeding means, with which it is associated, stops in synchronism with the stoppage of the treatment means. Therefore,

as soon as the intermittent stoppage ceases, the continuous driving means is able instantly to pick up the second feeding means and advance the material and the first feeding means, with a minimum of interruption. V

Particularly the device comprises a needle which is to sew adjacent edges of the material together and therefore the material must be stopped long enough for the needle to pass through the material and avoid tearing the goods or breaking the needle. In this respect, therefore, I provide a pair of rollers disposed at a point just beyond the sewing point and adapted to engage the material on opposite sides thereof to pull the material past the sewing point. One

. of said rollers is connected to the feed dog operating mechanism, but the other roller is connected to a motor which tends to drive it continuously. However, a slip clutch is disposed between the driving motor and the second roller so that, when the first roller stops in its intermittent motion, the slip clutch will allow the second roller to stop also but also allows the motion of it and the first roller to be resumed instantly as soon as the intermittent stoppage of the first roller ceases so that there is a minimum of stoppage of the goods. A present preferred form of the invention is shown in the accompanying drawings of which, Fig. 1 is a plan view of a simple fom of the invention;

Fig. 2 is an elevational view of the device with the parts broken away;

Fig. 3 is a vertical cross section taken on the line 33 of Fig. 2;

, required to be intermittently and momentarily stopped while it is being treated at a given point. Such treatment may be sewing, gluing adjacent edges together, or any other treatment during which the material must at least for an instant be stationary.

The drawings show the somewhat diagrammatic representation of a feeding means which is related to one form of material-treatin means. In this form a sewing device which is represented by the needle I0 is operated by any suitable and usual means. The feed dog operating mechanism has associated therewith a linkage designated generally by the numeral l i and adapted to move a clutch member i2 which is of the intermittent ball type adapted to operate a feeding roller l3 which is disposed on the under side of the material beyond the needle position. This mechanism is so designed in accordance with the usual mechanism that when the needle is passing through the material the clutch will not move the roller [3 but otherwise will move it.

On the opposite side of the material is disposed a roller l4 mounted on a. shaft 55 connected to a slip clutch is of any desired type. This clutch vention may be limited by the language or scope of any one or more of the appended claims.

What I claim as my invention is: 1. A device for feeding material which includes a plurality of means engaging opposite sides of the material, means for driving one of said engaging means intermittently, means tending to drive the other of said engaging means continuis driven by a chain "5' connected to a .continuously driven motor H. The upper roller l4 may be pressed into engagement with the lower roller by any suitable means such as a spring l8 arranged in any suitable manner to create such pressure.

From a consideration .of this simple form of the invention, it is readily perceivable that when the needle is passing through the material, the linkage II will not drive the lower roller or feeding means !3 and that therefore the material is not at that instant being advanced. For the reasons mentioned above this momentary stoppage is highly desirable. However, at the instant that the needle passes out-of the material and the sewing and other treatment has been effected the motion of the rollers on the material to advance it is instantly begun so that except for this momentary stoppage the motion of the material through the device is uninterrupted. In Figs. 4 and 5 is shown a modified form of the invention which varies from the simple form just described only in that the slip clutch is disposed in the connection at a different point and the :parts are associated for the purpose of forming tubular material. In this form the needle or treating means is shown associated'with the rollers 13 and i4 and the shaft of the roller I4 is connected by a chain H to a shaft 18' associated with another roller l9 and between this roller I9 and the chain H is disposed a slip clutch 2i functioning in the same manner as the .slip clutch previously described. The shaft l8 on which the roller i9 is mounted 'is connected by a chain 2! to a continuously operating motor 22. This shaft I 8 may be connected to another chain 23 to operate another roller 26 associated with the material to feed it along a predetermined path which may be spiral path in case the device is used for forming tubular bags. In this form the rollers l9 and 24, are associated with lower rollers not shown which engage the under side of the material but are idler rollers pressing the material by any suitable means such as those already shown.

In this manner the material is pulled past the treatment point and is intermittently stopped to permit the treatment to be effective without damaging the material but the instant the material is through being treated its motion is immediately picked up so that there is not substantial loss in its motion except that required for treatment.

While the invention has been described and set forth with respect to its preferred form in details it is not intended that it be limited to such details and forms since many changes and modifications may be made in the invention without departing from the spirit and scope of the invention in its broadest aspects. Hence it is not desired to limit the invention to the exact detail forms shown except in so far as the inously, including a slip clutch disposed between the second driving means and the second engaging means to permit the second engaging means to stop momentarily when the first engaging means stops in its intermittent motion.

2. A device for feeding material which includes a means for intermittently acting upon said material, a, plurality of feeding means engaging opposite sides of the material, means for driving one of said engaging means intermittently in synchronism with the intermittent action on the material, means tending to drive the other of said engaging means continuously including a slip clutch disposed between said second driving means and the second engaging means to permit the second engaging means to stop momentarily when the first engaging means stops in its intermittent motion.

3. A device for feeding material which includes a pair of feeding rollers engaging opposite sides of the material, means for driving one of said rollers intermittently, means tending to drive the other of said rollers continuously, including a slip clutch disposed between said second driving means and the second roller to permit the second roller to stop momentarily when the first roller stops in its intermittent motion.

4. A device for feeding material which includes a means for intermittently acting upon said material, a plurality of feeding rollers engaging opposite sides of the material, means for driving one of said rollers intermittently in synchronism with the intermittent action on the material, means tending to drive the other of said rollers continuously including a slip clutch disposed between the second driving means and the second roller to permit the second roller to stop momentarily when the first roller stops in its intermittent motion.

5. A device for feeding material which includes an intermittently operated feed dog mechanism, a plurality of feeding means engaging opposite sides of the material, means for driving one of said feeding means intermittently in synchronism with the feed dog mechanism, means tending to drive the other of said engaging means continuously including a slip clutch disposed between the said second driving means and the second engaging means to permit the second engaging means to stop momentarily when the first engaging means stops in its intermittent motion.

6. A device for feeding material which includes an intermittently operated feed dog mechanism, a plurality of feeding rollers engaging opposite sides of the material, means for driving one of said rollers intermittently in synchronism with the feed dog mechanism, means tending to drive the other of said rollers continuously, including a slip clutch disposed between the second driving means and the second roller to permit the second roller to stop momentarily when the first roller stops in its intermittent motion.

7. A device for feeding material which includes an intermittently operated feed dog mechanism, a pair of material-engaging rollers disposed at a given point to engage opposite sides of the mar terial, means for driving one of said rollers in- 5 termittently in synchronism with the feed dog mechanism, means tending to drive the other of said rollers continuously, including a slip clutch disposed between said second driving means and the second roller to permit the second roller to 5 stop momentarily when the first roller stops momentarily in its intermittent motion.

HARRY GERSTEIN.

6 REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 541,567 McGowan June 25, 1895 841,480 Bates Jan. 15, 1907 2,325,643 Weis Aug. 3, 1943