USRE3203E - Enamelled paper - Google Patents

Description

S. SHEPHERD & A. M. GEORGE. MACHINE FDR POLISHING BNAMELED PAPER.

ERS ca, mom-uma, WASHINGTON a c I 2 Sheets-Sheet 1.

Reissued Nov. 17, 1868.

' 2 Sheets-Sheet2. S. SHEPHERD & A. M. GEORGE. MACHINE FOR POLISHING ENAMELED PAPER.

No. 3,203. Reissued Nov. 17, 1868.

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intent cam. -11 w s M nL SHEPHERD AND JOSEPH GREELEY, or NASHUA, NEW HAMPSHIRE, ASSIGN- nns, BY MESNE ASSIGNMENTS, or sAMnEL SHEPHERD AND AMMI M. cnonon'.

LettersPctent-No. 56,457, dated July 17,1866; reissue No. 3,203, dated Nocember 17, 1868.

The Schedule referred to in these Letters Patent and making put of the lane.

To all whom it may concern Be it known that the following is a full, clear, and

exact description of certain new and useful Improvebeing had to the accompanying drawing, forming partof this specification, and in which Figure 1 represents a plan or top view of a machineconstructed in accordance with said improvements;

Figure 2, an end elevation thereof; and Figure 3, a central vertical longitudinal section. This invention consists in the combination of a rotary polishing-device, travelling at ariyrequired velocity, with an endless carrying-device, moving at a lower velocity than the polishing-device, and supporting-table, bed, or ways to the latter, in such manner that the paper or material to be polished, being carried underneath the rotary polishing-device, has its cnamellcd surface subjected to the frictional rubbing-action of the said device, whereby it is polished or burnished much more rapidly and efliciently than by the means ordinarily employed.

Likewise, the invention consists in a combination, with an endless carrying-device to the paper or other materialto be acted on, of-a polishing-device, arranged to reciprocate across the line or plane of feed.

The invention also consists in a novel means of insuring the proper position of the paper or material during its passage to the rotary polishing-device, and of preventing the formationpf ridges or creases therein during the operation of polishing the same.

The invention further consists in a novel means of securing an eificieut bearing of the rotary polishingdevice upon the paper or material during the polishlug-operation.

In the machine, when constructed as represented in the accompanying drawing, A is a frame, which supports the working parts, and on theupper side or top of which is secured a flat horizontal table;*B, which is here shown as occupying the entire central part of the aforesaid top of the frame A. I

At the rearmost end of this table B, with the ends of its shaft, 0., working insuitable bearings in the sides of the frame A, is a transverse roller, 0, upon one end of the shaitof which is fixed'a pulley or belt-wheel, j, while situated at the opposite or front end of the said table is a similar transverse roller, D, which has the ends of its shaft, b, working in sliding-journal boxes,

which are placed in suitable longitudinal slots or recesses, 0, formed, one in each side of the frame A, at the front end thereof.

E is a transverse bar, situated behind the roller D, and the ends of which project outward, through the aforesaid slot 0, as shown at d, in fig. 1.

c e are two knobs or brackets, situated at the front end of the frame A, one at each side thereof. A horizontal screw, f, passes through a suitable hole in each of .the brackets e, and back through the outwardly-projecting ends 11 of the transverse bar E, and inasmuch as the ends of the transverse bar E are situated behind the sliding bearings of the roller D, it follows that, by turning the screws j, so as to bring the transverse bar E forward or outward, the aforesaid sliding bearings, and consequently the roller D, will be brought forward, while, by turning the said screws in a contrary direction, the bar E, and consequently the roller D, will be allowed to move inward, toward the table B.

Placed upon the rollers O D, and with its upper part resting upon and supported by the table'B, is an endless apron, E, which is made of India rubber, felt, velvet,or other elastic material, and the tension of which isadjusted by means of the screws f and bar E, as just herein-before explained.

G represents a rotary polishing or burnisnmg-device, which may have its outer surface or periphery hard or soft, according to the work to be done, but is here supposed to be made of iron, with a chilled surface, or of steel, and which is. situated transversely to the feed, or, as here represented, across and over the table B, near its one end, and, of course, above the endless carryiug-device, or, in other words, supposing thelatter to be an endless apron, F, as shown, above the uppermost surface of said apron.

The ends of the shaftg of this rotary polishing-device, G, are shown as working in yielding and adjustable journal-boxes or bearings, H, which are situated, one at each side of the frame A.

v A vertical quadrangular stem, h, projects downward from the centre of each bearing, H, into a suitable vertical slot in the side of the frame A, and servesto steady the bearing.

Passing through each end of each bearing, and with its lower extremity resting upon the upper surface of the side of the frame A,-is a hollow screw, 1'', and passingdown through eachhollow screw, i, with its lower,

end screwed into the frame A, is a solid screw, it, while placed around'each of the screws .70, between thehead thereof and the top of the hollow screw through which it passes, is a spiral 'spring, at.

The appurtenances of the bearings H being thus arranged, the height of the rotary polishing-device, with reference'to the endless carrying-device, may be adjustcd by turning the hollow screws i, while the downward pressure-of the springs 11., to press the said rotary polishing-device upon the upper surface of the paper or material as it is carried underneath it by the endless car rying-device, may be adjusted by'turning the screws k.

The length of .the rotary polishing-device is shown as less than the distance between thebearings H, in order that sufficient room may be allowed to admit of said rotary device having a reciprocating movement, as will be presently further explained.

One end of the shaft 9 of therotary polishing-device projects outwards, beyond its bearing, and has fixed upon it a pulley, and formed around the said endof the shaft 9, at the inner end of the pulley I, is an annular groove, r.

J is a transverse shaft, which is situated in the front or forward end of the frame A, and which is furnished at one end with a driving pulley,K, and also with a small pulley, m, and at the other end with a pulley, L, which is connected by a belt, s, with the pulley I of the rotary polishing-device, while a band, t, extends from the small pulley m to the pulley J, on the rearmo'st roller, 0.

Situated in the centre of the shaft J is a small bandwheel, M, which is connected by abelt, -u,with a larger band-wheel, N, that is fixed in the centre of a transverse shaft R, situated in the rearmost end of the frame A, at the lower part thereof. One end of this shaft R projects out beyond the side of the frame A, and has fixed upon it a thickwheel or disk, \V, in and around the circumference of which is a cam-groove, 10.

S is a lever, which is pivoted at or near its centre upon a pin, a, which projects out from the side of the frame A. The upper end of this lever S is forked, and fitted into the groove '2', in the shaft of the rotary polishingdevice, while the lower-end, being also forked, is fitted rate the cam-groove w, in the circumference of the wheel W, in such manner that the rotation of the saidwheel W, by vibrating the lever S, communicates a lougitmlinal-reciprcoating movement to the rotary polishing ievice.

T is an elastic pressing-plate or blade, which is placed transversely over the endless carrying-device, in front of the rotary polishing-device, and in an inclined position, as shown more clearly in fig. 3. Projecting forward from each end of this pressing-plate T is a flat arm, I), the forward extremity of which rests upon a stud or spur, 0', while near the inner ends thereof is a hole, through which is passed a fixed vertical screw, (1.

Between theheads of these screws, 11, and the upper sides of the arms 5, are spiral springs, e, which press the rear or lower edge of the pressing-plate '1 'down upon the paper or material as it passes to the rotary polishing-device, as will be presently further set forth. A small roller may be attached lengthwise to the rear or pressing-edge of this pressing-plate, if desired, to diminish its friction upon the paper or material.

Instead of making the endless carrying-device, here illustrated by the endless apron F, elastic, as set forth, the same may be made of non-elastic material, and, if desired, the upper surface of the supporting table, or other base to the endless carrying-device, may he made elastic, whereby a propel bearing of the rotary polishing-device upon the surface of the paper or material is obtained in the same manner as when the endless carrying-device is itself elastic. I

Furthermore, the said rotary polishing-device may be rotated, if desired, in a direction opposite to the movement of the endless carrying-device, with the samezresult as when moving in the same directioutherewn' I The paper or material. to be polished, in the form long sheets or pieces, is placed, with its enamclled SUP-- face upwards, upon the forward portion of the endless carrying-device, and is carried back first under the pressing-plate "1, which spreads it out evenly, and then under the rotary polishing-device,which, being pressed down upon the paper ormaterial by the springs 21, and

revolving at a much higher velocity than that of the.

paper as it is carried back by the endless carryingdevice, polishes or burnishes the upper and enamelled,

surface of the paper or material.

\lVhen the endlesscarrying-device is made elastic, it causes the paper or material to bend somewhat around the under side of the rotary polishing-device, as it passes underneath the same, and thus keeps it in contact with a much greater proportion of the surface of the said polishing-device than if the paper or material 'were kept perfectly flat while passing under thesame, whereby a very eflicient action of the said rotary polishing-device upon the paper or material is obtained. At the same time the reciprocating movement of the rotary polishing-device, produced simultaneously with its revolving motion, by means of the cam-lever W' and lever S, as hereinbefore explained, prevents the formation of ridges or creases in the paper or material, which would be likely to occur if such reciprocating movement of the rotary polishing-device were dispensed with.

What is here claimed, and desired to be secured by Letters Patent, is-- 1. The combination of a rotary polishing-device with-an endless carrying-device, moving at a lower velocity than the polishing-device, and supporting-table, bed, or ways to the carrying-device, substantially as herein set forth, for the purpose specified.

2. The combination, with an endless carrying-device to the paper or other material to be operated on, of a polishing-device, arranged to reciprocate across the line or plane of feed, substantially as specified.

3. Providing an elastic bearing for the paper or material under the rotary polishing-device, by making either the endless carrying-device, or support upon which it rests, elastic, substantially as herein set forth.

4. Giving the rotary polishing-device a reciprocating movement transversely t0 the feed, as produced by the endless carrying-device, simultaneously with its rotary motion, substantially as herein set forth, for the purpose specified.

5. The pressing-plate T, applied in relation with the rotary polishing-device, and endless carrying-device, and support or pays to the latt-cr, substantially as herein set forth, or the pnrpose'speeified SAMUEL SHEPHERD. J OSEPH GREELEY.

Witnesses:

MARY E. SHEPHERD,- SA L T. WORCESTER.

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