US394476A - John a - Google Patents

Description

(No Model.)

J. A. BASTIN.

PAPER OUTTEB.

No. 394,476. v Patented Dec. 11, 1888..

Ates'' Mar' LE @14 1a 222 (617296;?

UNITED STATES PATENT OFFICE.

JOHN A. EASTIN, OF ST. LOUIS, MISSOURI, ASSIGNOR OF ONE-HALF TO JOHN R. IVILLIAMS, OF SAME PLACE.

PAPER-CUTTER.

SPECIFICATION forming part of Letters Patent No. 394,476, dated December 11, 1888.

Application filed February 9, 1888. Serial No. 263,456 (No model.)

To all whom it may concern: i bolts 17, which are secured within the boX- Be it known that I, J oHN A. EASTIN, of the ings 18 within the base of the frame. Ten- 55 city of St. Louis, in the State of Missouri, have sion-springs 19, whose initial ends are clasped invented a certain new and useful Improvei around the outer eyelet-bolts, coil around the ment in Paper-Cutters, of which the following K foot-sections of the tension-bar, and have prois a full, clear, and exact description, referjected arms 20, that are elevated above the ence being had to the accompanying drawbase, embrace the stems of the tension-bar, 6o ings, forming part of this specification, and in and enforce the spring-tension of its T-head whichagainst the paper roll. It will be seen that 10 Figure I is a front view in elevation of my the feet of said tension-bar are seated in their paper-cutter, with part broken away to show boxings in the base in the front of the frame, the bevel-slotway through which the paper is and, passing under the roll, exert their tension drawn for a recut and broken away on anunder and upwardly against its rear side,and other part to show the tension-spring. Fig. II so, contrary to the usual device in paper-cut- I 5 is an end view in elevation showing the acters, applies its spring-tension at a point retion of the spring tension-arm on the roll and mote from that at which the paper is cut, so the position of the forward edge of the paper as not to antagonize or interfere with the opready for grasping for drawing out preparaeration of the knife. tory to cutting; and Fig. III is a vertical sec- 21 represents a friction-roller, whose spin- 20 tion taken on line III III, Fig. I, showing the dles22 have bearings 23 formed on the lugs course of the paper over the friction-roller, 24, that project from the rear of the posts near through the bevel inclined slot, and raised in the top of the same. The loose end of the contact with the knife ready for cutting. paper from the roll passes over the said fric- This invention relates to devices for comtion-roller at a right elevation to carry it 25 bined portable and stationary paper-cutters preferably at a slight incline from said roller with stationary knives; and the invention to the upper edge of the curve-faced bar 25, consists in features of novelty hereinafter the angle-flanges 26 of which are firmly sefully described, and pointed out in the claims. cured to the inside of the posts near the top Referring to the drawings,in which similar of the same by screws or bolts 27. The loose 30 figures of reference indicate like parts in all end of the paper, after passing over the corthe views, 1 represents the base, 2 the posts, ner of said curve-faced bar, passes down and and 3 the cap, of the frame in, and in connecout between the face of said bar and around tion with, which my paper-cutter is worked. edged bar 28, which is pivotally secured by The foot-flanges I of the posts are fastened to the bolt 29 to the front cross-bar, 30, that en- 3 5 the base by screw-bolts 5, and the cap-piece forces the connection of the tops of the posts,

to the head of the frame or posts by screwand at its loose end is fastened by a thumbbolis 6. screw, 31. \Vhen the thumb-screw is un' '7 is the rotary shaft, and 9 its spindles, seated, the bar 28 may be lowered at its then which have bearings 9 between the projecting loose end, turning on its pivot-bolt 29 to give 40 lugs 10 and 11 on the rear edges of the posts. more free movement to the hand in reaching 12 are the spools which carry the paper roll through for the initial insertion of the loose 13, and are preferably made sectional, passing end of the paper when a fresh roll is placed in in and only part of the way through the paper the frame. To further facilitate access to the roll; but they may, if preferred, be made inhand of the operator, the connecting-bar 30 45 tegral the whole length of the roll. may, if desired, be arched or curved upward 14 represents the upwardly-extending tenfrom the posts. sion-bar, which is provided with an elongated 32 represents the knife, which is stationary I00 T-head, 15, which projects at both ends beand firmly secured to the bevel edge 33 of the yond the stems that carry it, and horizontal cap of the frame by screw-bolts 34. The edge 50 pivotal feet 16, that proceed at a right angle of the knife is beveled outward, so as to looutwardly from said stem to the same extent cate its cutting-edge in the most favorable as the outward projections of the T-head. position for severing the paper when it is ele- The said feet have bearings within the eyeletvated for so doing.

It will be seen that by having the knife removed from the roll,which is ever varying in diameter as the paper is used, I avoid the objectionable feature of a loose adjustable knife,which, of necessity, has a give-and-take movement that results in an uneven tear of the paper, and also insure other advantages that will be referred to in the operative description.

The spring tension-bar, it will be seen, has its pivotal foot hold and spring attachment in boxings in the front of the base, and, unlike the usual position of tension-arms, it curves from said position upwardly under and to the rear of the roll at a point about the most remote from the point of severance of the paper. By this arrangement the first tension and cutting features of the device are removed from all antagonistic interference with each other. Another feature of said spring tension-bar is its T-arms, that extend out laterally from the stem to the out edges of the roll. This avoids the difficulty experienced by the usual form of tension-bars, which have not said lateral extensions of the T-arms, butproceeding direct from their stems, their tension is not uniform, but is exerted too much on the extreme edges, while the bar gives outwardly in the middle and is in danger of resulting in a tension tear at the edges.

The operation of the device is as follows: The paper roll, having had its shaft and sectional spools inserted, is placed on its bearings in the frame. The forward edge, 35, of the paper is then placed over the frictionroller 21 and through the curved slotway that is formed by the curve-faced bar 25 and the round-edged bar 28. To facilitate the process, the thumb-screw 31, that fastens one end of the bar 28, may be loosened and said bar turned down on itspivotal connection at the other end. Then, especially if the cross-bar 30 is arched, there will be provided more convenient room. for the placement of the paper. The bar 28 having been readjusted in its place and the thumb-screw seated, it will be seen, as shown in all the views, the front edge, 35, of the paper projects outward and forward, so as to present an easy catchhold for drawing a sufficient length of the paper forward, according to size of the piece required.

In drawing the paper preparatory to cutting it should be drawn downward and slightly forward, so as to pass through the curved slot free of almost all friction. The forward edge of the paper is then raised, so as to bring the part to be severed in contact with the edge of the knife.

It will be seen that when the paper is lifted in contact with the knife it immediately enforces a second tension at the outlet of the curved slot against the round-edged tensionbar 28, causing a sufficiently rigid tension to firmly hold the paper at that point while being cut, thus preventing the injurious feature of dragging during the process of cutting, and

thus making a ragged tear; also, the knife not being adjustable, as all have to be that work against the roll, but rigidly secured to the bevel edge of the cap where there cannot be any giveand-take movement of the knife, (as of necessity there must be with adjustable knives,) a clean cut can invariably be secured. I I claim as my invention- 1. In a paper-cutter, the combination of the paper roll, the spring tension bar pressing against the lower rear portion of the roll, the

curved bar25, and second tension-bar, 28, substantially as and for the purpose described.

2. In a paper-cutter, the combination of the paper roll, the upwardly extending spring tension-bar pressing against the lower rear portion of the roll, the curved bar 25, second tension-bar, 28, and the knife 32, the second tension-bar being remote from the knife, substantially as and for the purpose set forth.

3. In a paper-cutter, the combination of the paper roll, the frame in which it is hung, and the upwardly-extendin g spring tension-bar beneath the roll, the laterally-extending T- arms of said bar arranged to equalize the tension on the 1011, substantially as and for the purpose set forth.

4. Ina papercut-ter, the combination of the paper roll, the frame in which it is hung, the T-shaped spring tension-bar, the horizontal feet of said bar, the boxings in the base of the frame in which said feet have their pivotal bearings, the tension-springs 19, that enforce said bar, the second tension bar, 28, and stationary knife 32, the first tension-bar arranged to exert its pressure at a line remote from the knife and the second tension-bar remote from the roll, substantially as and forv pressure on the roll at a line remote from the knife, andthe pivoted second tension-bar and thumb-screw that secures it, the said bar exerting its tension on a line remote from the roll and adjacent to the knife, for the cut of which it holds the paper in rigid tension, and the stationary knife rigidly secured to the bevel front edge of the cap of the frame, and thus held to its work to effect a clean cut, substantially as and for the purpose set forth.

6. In a paper cutter, the spring T-shaped tension-bar that exerts its pressure on a line remote from the knife, the friction-roller 21, and second tension-bar with tension on a line remote from the paper roll, and the stationary knife, sufficiently removed from the second tension-bar to provide a suitable catchhold of the forward edge of the paper after IIO severance for a redraw and recut, substan-

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