US1185790A - Knot-cutting machine. - Google Patents

Description

C. M. GREISING & W. E; NAYLOR.

KNOT CUTTING MACHINE.

APPLICATION FILED OCT. 24, 1913.

1 1 85,790. Patented June 6, 1916.

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C. M. GREISING & W. E. NAYLOR.

KNOT CUTTING MACHINE. APPLICATION mgn on. 24. 1913.

Patented June 6, 1916.

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flagyza UNITED STATES PATENT OFFICE.

CHARLES M. GREISING AND WALTER E. NAYLOR, OF ST. PAUL, MINNESOTA, ASSIGNORS TO ST. PAUL TWINE COMPANY, A CORPORATION OF MINNESOTA.

KNOT-CUTTING- MACHINE.

Specification of Letters Patent. t t June 191 Application filed October 24, 1913. Serial No. 797,012.,

To all whom it may concern: 7

Be it known that we, CHARLES M. GREis- ING and WALTER E. NAYLOR, citizens of the United States, and residents, respectively, of St. Paul, in the county of Ramsey and State of Minnesota, have invented certain new and useful Improvements in Knot-Cutting Machines, of which the following is a full, clear, and exact specification.

This invention relates to cutting machines, and more particularly to machines for cutting twine knots.

The fiber out of which twine is made is delivered to twine mills in large bales. Some of the fiber in such bales is found, in many instances, to be considerably knotted. Again, fiber of knotted twine, when freed from the knots, can be used in making new twine. It has been found that a great amount of fiber can be saved by cutting the knots of-knotted portions and utilizing all parts of the fiber, whether or not such fiber has been spun into twine previously.

Heretofore all knotshave been cut by hand. This method is not the most desirable for various reasons, including excessive cost of doing the work.

The objects of this invention, therefore, are to minimize the cost of cutting twine knots and to provide a machine which is particularly adapted for cutting such knots automatically.

The invention is illustrated on the accompanying sheets of drawings, in which Figure 1 is a side elevation of our knotcutting machine; Fig. 2 is a plan view of '29 and provided with springs in exactly the same; Fig. 3 is a sectional view taken'in the plane of line 33 of Fig.2; and Fig. 4 is a transverse sectional view of the ma chine taken substantially in the planes of the irregular line 44 of Fig. 2.

The various novel features of our invention will be apparent from the description and drawings, and will be particularly set.

forth in the appended claims.

This knot-cutting machine includes a main base 10, supported upon legs 11, the base being provided with bearing portions in which shafts 12, 13, 14 and 15 are journaled. Mounted upon shaft 14,-which is the drive shaft of the machine, are two pulleys, a tight pulley 16 and a loose pulley 17 which may receive motion from any suit- .ing two sets of adjacent rolls between which the twine, fiber or material to be cut is drawn from the rotating cutter and discharged from the machine proper. These rolls 24 and 25 'are mounted respectively upon shafts 24 and 25 which are mounted in slidable bearings 26 adapted to move up and down in slotted portions 27 of a frame, including side members 28 and 29 which are secured to the base 10. Each of the bearing members 26 has a stem 30, around which is wound a coiled spring 31, which engages the bearing member 26, the other end of the spring being held in a predetermined adjusted-position by a set screw 32 having an adjustable member 32 thereon. By means of this yieldable arrangement the rolls 24 and 25 can move upwardly against the tension of the springs 31 when material passing between the sets of rolls is of sulficient thickness to cause such movement.

Cooperating with the cutting member 18 4 is a Babbitt metal roll 33 which'is pressed into and maintained in yieldable engagement with said cutting member, said roll 33 beingmounted in frame members 28 and the same manner as hereinbefore considered with respectto the rolls 24 and 25.

Mounted upon the shaft 15 is a corrugated roll 34, which cooperates with another corrugated roll 35 mounted upon a shaft 36 'journaled in the side frame members 28 and 29. These corrugated rolls, which are the rolls for drawing the twine or fiber into the machine at a uniform rate and feeding the same in a like manner to the cutting member 18, are also yieldably mounted-with respect to each other as hereinabove considered. v

It is seen, therefore, that there is a cutting member 18 and cooperating soft metal roll 33 for cutting fiber knots, a pair of corrugated rolls 34 and 35 for feeding the twine or fiber to and between the cutting member 18 and roll 33, and two sets of plain rolls for drawing such twine or fiber from the cutting member and discharging same from the machine.

Motion is transmitted to the cutting member and the various rolls by the following mechanism: Mounted upon the shaft 14 is a gear 37 meshing with a gear 38, which, in turn, meshes with a gear 39 mounted upon shaft 15. Mounted upon the opposite end of shaft 15 is another gear 40, which meshes with an'intermediate gear '41 meshing with a second intermediate gear 42, which meshes with two gears 43 and 44 for transmitting motion to rolls 33 and 35 respectively. Also meshing with gear 37 is a gear 45, which drives a gear 46 mounted upon shaft 13, for actuating roll 23, cooperating roll 25 being driven through gears 47 and 48, the former meshing with gear 43 and the latter being mounted to rotate roller 25. A gear 50, which meshes with gear 46, drives roll 22 through its connection with a gear 51 mounted upon one end of shaft 12. Roll 24 is actuated through a train of'gears including gears 53, 54 and 55, the first of which meshes with gear 46 and the second of which 'meshes with gears 53 and 55, the last gear being mounted concentric and rigid with roll 24. These various intermediate gears are suitably supported on studs secured in the base member 10 and side frame members 28 and 29. All of the gears in this machine are provided with the proper number of teeth so that the corrugated in- feeding rolls 34 and 35 are given a relatively slow movement, the cutting member 18 and its cooperating roll 33 a relatively faster speed, cooperating rolls 23 and 25 a speed some what slower than the speed of the cutting member but faster than the speed of the feed rolls 34and 35, and rolls22 and 24 a speed somewhat greater than the speed ofrolls 23 and 25. Cooperating discharging rolls 22 and 24 are given greater speed than cotiperating discharging rolls 23 and25- for the purpose of jerking apart or separating the cut portions of the fiber or twine as soon as cooperating rolls 22 and 24 take hold of the material. The speed of rolls 23 and 25 is greater than speed of rolls 34.and 35 so that there will be a drawing action therebetween, and at the same time the cutting member will rotate at the highest speed for cutting knots.

By means of this machine fiber and twine knots may be quickly cut and the portions of such fiber or twine separated in a minimum amount of time at a relatively low cost. Many pieces of twine may be fed into the machine simultaneously, the knots cut and the .cut portions separated from each other, the whole operation being automatic.

ber.

4. A knot-cutting machine having, in com- Due to the yieldable relationship of the 00- operating feed rolls and the cutting member and its cotiperating roll, twines and knots of varying sizes may be fed through the machine and cut. i E" .7

There may be various modifications of the precise form of the invention. as herein disclosed, and it is our intention to cover all such modifications which do not involve a departure from the spirit and scope of our invention. as set. forth in the following claims.

l/Vhat we claim as new is:

1. A knot cutting machine having a. cutting member including a series of spaced cutting disks, and a yieldably mounted cooperating roll adj acent said cutting disks.

2. A knot cutting machine having a cutting member including a series of spaced cutting disks, and a coiiperating yieldably mounted roll normally in .engagement with said cutting disks.

3. A knot-cutting machine having, in combination, a plurality of sets of rolls and a cutting member, one of said sets of rolls operating at a greater speed than another of said set of rolls for separating out portions of material fed past said cutting membination, cutting means including revolving disks and a roll cooperating therewith, means forfeeding material into contact with said cutting means, and means for separating the cut portions of said material after passing from said cutting means.

5. A knot-cutting machine having, in combination, a plurality of cotiperating rolls for feeding material to be cut into and drawing such material out of the machine, 3.?

and a revolving cutting member interposed between said rolls, the speed of said rolls ting member, corrugated rolls for feeding 3 such material to said cutting member, and plain rolls for drawing such material away from said cutting member.

7. A knot-cutting machine having, in combination, a cutting member, a yieldably mounted member for holding material to be cut in engagement with said cutting member, means for feeding such material to said cutting member, and a plurality of sets of rolls rotating. at different speeds for idrawing such material away from said cuttlng member and erking apart cut portions of such material. 7

8. A knot-cuttmg machine having, in comblnatlon, a rotary cutting member, feed rolls on one side of said cutting member ro- In testimony whereof we affix our signatating at a relatively low speed for feeding tures, in the presence of two witnesses.

twine to said cutting member and discharging rolls on the other side (if said cutting member rotating at a higher speed to draw Witnesses:

twine from said feed rolls past said cutting member, said cutting member rotating at a WILLIAM H. PIPER, still higher speed. SIGARD J. OLBERG.

copies of this patent may be obtained for five cents each, by sunning the Gonniniener of latex.

Washington. D. 0." i r

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