US469072A - Cloth-cutting machine - Google Patents

Description

(No Model.)

2 H. T R. A W A CLOTH GETTING MAGHINE. No, 469,072

Patented Feb. 16, 1892.

BY a l $3M! ATTORNEYS WITNESSES:

us ca PNam-Lrmc., WASHINBYDN, o. c.

UhIlTED STATES PATENT OFFICE.

ALBIN VARTH, OF STAPLETON, NEV YORK.

'CLOT H-CU TTlNG MACHINE.

SPECIFICATION forming part of Letters Patent No. 469,072, dated February 16, 1892.

' Application filed July 9, 1891. Serial No. 398,970. (No model.)

To all whom it may concern.-

and illustrated in the accompanying drawings, in which-- Figure 1 represents a side elevation. Fig. 2 is a horizontal section in the planem at, Fig. 1. Fig. 3 is a detached elevation of the cutter-head, on a larger scale than the previous figures, showing one side. Fig. 4 is a similar elevation showing the other side of the cutter-head. Fig. 5 is a vertical section in the plane 'y 1 Fig. 3. Fig. 6 is a horizontal section in the plane 2 2, Fig. 3, on a larger scale than Figs. i and 5. Fig. 7 is a horizontal section in the plane to w, Fig. 5. Fig. 8 is an elevation of a portion of the cutter-head.

In the drawings the letterA designates the cloth-liftin g foot-plate, which is movable over the table WV and from which rises the stand erd B, to which is firmly secured the casing O. The standard B carries the knife G, and in the example shown in the drawings, this knife has a circular form, and I impart motion to this knife by means of a belt K, which extends down through the casing O and round a pulley I-I, carried by the standard B, as will be presently more fully explained.

From the bottom of the casing 0 extends a bracket D, parallel with the standard B. (Best seen in Figs. 5 and 6.) On this bracket is adjustably secured the tubular bearing E for the spindle F,which carries the circular knife G and the pulley H. The spindle F is adjusted in the tubular bearing E by means of a screw a, Figs. 5 and 6, and the knife G and pulley H are secured to said spindle by a screw 12.

On the rear end of the tubular bearing E is fastened a lubricating-cup I, Fig. 5. The bearing E projects from a plate 6, which can be adjusted in the proper relation to the knife-receiving socket a Fig. 5, in the clothlifting foot plate A. Thecasing'C engages an eye 0 on the end of the arm J, and on this arm are mounted the two guide pulleys d e for the belt K, which is intended to impart motion to the knife G. This belt extends down through the casing O and engages the pulley II on the knife-spindle F, Figs. 1 and 5. The arm J is connected to an arm S, which swivels on the spindle V, so that the cutterhead can be freely turned in the eye and swung round the spindle V. The pulleys cl 6 are arranged one above the other and the standard carrying the knife turns freely in the eye 0 of the arm J, and it can be turned by a handleL, applied to the casing C, or by applying the hand directly to the standard. The pulleys cl 6 are mounted on one end of a lever M, which has its fulcrum in a standard N, which rises from the arm .I,and the opposite end of said lever is adj ustably secured to an arm P, so that it can be raised or lowered and fastened in the required position by a set-screw f. By these means the tension of the driving-belt K can be readily adjusted.

On the standard Bis adjustably secured a protector Q, which extends down over the face of the knife G. In cutting through a pile of material consisting of a large number of layers the lowest layer in the pile is cut to the point 1, Fig. 3, while the upper layer is cut to the point 2, and in order to produce a square cut that portion of the pile which has passed the knife must be raised from the position shown in Fig. 3 to that shown in Fig. 8. To enablethe operative to perform this operation of lifting the pile with safety, the protector must be so arranged that the cut portion on being raised will pass up on the outside face of the protector. This protector is secured to the standard B by means of a set screw, which passes through a slot in the protector, (see Fig. 1,) so that the latter can be readily adjusted at the required distance.

from the foot-plate.

In order to keep the edge of the knife G sharp as the cutting operation progresses, I

have applied a grinding device, which is constructed as follows: On the bracket D is adjustably secured a tubular socket g, which forms the bearing for a rod 72., in the inner forked end of which is secured a pivot i", on which swings a spindle 2'. On this spindle is loosely mounted a tube j, on which are mounted the grinding-disks 7c 7c,which are knife, both grinding-disks are out of ccntaet held at the proper distance apart by a washer Z, interposed between them, and which are retained in position upon the tubej by a flange j at the inner end of said tube and by a nut j engaging a screw-thread out upon the outer portion of said tube, Fig. 7. hen the nut 3' is screwed up, the grinding-disks are retained on the tube j in such a position that they straddle the knife G, Figs. 5 and 7, one. of said disks being situated on the inside of the knife and the other on its outside. At the same time the tube j, which carries the grinding-disks, is free to revolve upon the spindle 1', which can swing in a horizontal plane on the pivot 71 and which extends transversely ac os the p ne of h n e- On h ut end f h spin le t se eur d net h c fer-1 1s a handle an als Step e Pre eet he tuh j zx' d op-pi g 01 en th knife G s in m t n, he p ativet e ho d o the. net or h ndl and mpa to the p n n osci lat o whereby th g i n disks. are brought in contact with the sides of the knife, and by this contact a revolving motion is imparted to said disks and to the tu e .23. i h ppe h emet th same time a gentle friction is produced bewee h gr hding sks and the fa e e knife, and by this friction the knifeeedge is kept sharp. If the spindle t'is moved into, a position at right angles to the plane of the with the knife; but in order to keep the knife perfectly sharp two grindingedisks are TQ'. qu t-ed. ich are u t d on opposi e s d e the knife and can be thrown in or out ofac.- tion simultaneously,

By referring to Fig, 7 it will be seen that the red is b r Out t ece ve a p ng wh ch acts 110 a p s the fia e et ic bears against the flat inner end of the spindle i, so that when this spindle, is left free to follow the action of the spring h the grindingd ke h h e ain n a pes tien pa al el with the knife G, and they act upon the faces of the cutting-edge of said knife only when an oscillating motion is imparted to the spindle t.

In the example illustrated in the drawings I have shown two grinding-disks which act upon the Opposite sides of the knife; but in exceptional cases a single grinding-disk may be sufficient.

From the foregoing description it will be seen that motion is imparted to the knife G by means of a belt, which is carried down through the interior of the casing G and through the eye 0 of the arm J, so that the cutters-head can be freely turned round in the eye withoutinterferin g with the action of the driving-belt. It will be also seen that the two branches of the driving-belt are guided by the pulleys d e, which are carried by the arm J ,so that when the cutter-head is turned in the eye 0 only that portion of the belt be tween the guide-pulleys d e and the pulley H will be twisted and the action of said belt will not be disturbed. At the same time if the operative happens to release the; handle L or the casing C while the knife is in motion the cutter-head in my machine is not liable to be twirled round and to cause damage, and by these means agreat defect common to all cloth-cutting machines with circular knives as heretofore constructed is avoided.

By referring to Fig. 1 it will be seen that the belt'K receives its motion from an electromotor R, mounted on an arm S, which swivels on the spindle V and carries the arm J, as described in Letters Patent No. 444,286, granted to me January 6, 1891, or said belt may receive its motion from a carriage T and from a steam-engine er ether me er, as. e ribed n Let rs Pa n 44 .28 grante o. me

anuary 6, 9 ehd I do n t cl im n this I appl t o ny h g sh w d described in he above-nam d pa e ts- Y at I la m as ne i nd. esire to eeure y er Patent. s

pulley H being adapt to enga a belt exe d ng down th u h th i t el y as c ibed.

2- e eemhina e th a s andard cal-- yins e lo hi ing eet ple e d a racket D, f the t b ar he ring ee r te a d.

su ubracket, th shaft F, mounted in aid hearin nd ca y ng the pu ey H an he kni e G, s d pu y be ng adap d; o ngage t e dr inse t, a the luh ieetinsup I, se u ed to the tubular bearing E, substantially as described.

3. The com ination, wi h he eloihrlifting fe t-pla e, the stan a d B, he h ft ared by s i ta da d, th pulley H, d the knif G, mounte n s id af f th an J th ea 0, n i g t y termed o said arm, the guide-pulleys d a, mounted on he o i a i arm M, the pu l y H, and 6 being adapted to engage the drivingsbelt, and means for adj s g e win. M n t required position, substantially as described.

4. The combination, with a standard carrying a rotary knife, of an oscillating spindle carried by said standard and extending in a direction transverse to the plane of the knife, and two grinding-disks situated on op osite sides of the knife and free to rotate on the spindlet' by frictional contact with the knife, substantially as described.

5. The combination, with a standard carryin g a rotary knife, of an oscillating spindle 'i, a tubular bearing j, mounted on this spin dle and free to rotate on the same, two grindlug-disks situated on opposite sides of the knife and mounted on the tubular bearing j,

and e j st b ea 9 fo the oscillating spindle, substantially as described. 6. The combination, with a standard car- 10 and guide-pulleys d e, mounted on the arm,

I the said pulleys d, e, and 11 being adapted to engage adriving-belt extending down through the casing, substantially as described.

In testimony whereof I have hereunto set my hand in the presence of two subscribing I Witnesses.

ALBIN WVARTH. Witnesses:

W. HAUFF, E. E KASTENHUBER.

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