US1207320A - Machine for finishing and cooling curved stereotype-plates. - Google Patents

Description

I1. PEARCE.

MACHINE FOR FINISHING AND COOLING CUHVED STEREOTYPE PLATES.

APPLICATION FILED AUG.3. I9I0.

TL ,QUYfiQQ. Patented Dec. 1916.

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HERBERT PEARCE, OF BEOADHEATH, ENGLAND, ASSIGNOR, BY IVIESNE ASSIGNMENTS,

'I'O WOOD NEWSPAPER MACHINERY CORPORATION, OF NEW YORK, N. 1., A CORPO- RATION 0F VIRGINIA.

MACHINE FOB, FINISHING AND COOLING CURVE!) STEREOTYPE-PLATES.

Application filed August 3, 1910.

To all whom it may concern:

Be it known that I, HERBERT PEARCE, a subject of the King of Great Britain, residing at Broadheath, in the county of Chester, England, have invented a new and useful Machine for Finishing and Cooling Curved Stereotype-Plates, of which the following is a specification.

The present invention relates to improvements in means for finishing and cooling curved stereotypes.

It may be said to consist in means for enabling the runway rollers to adapt themselves so that they can present a fair bearing surface to the entire width of the respective side edge of the stereotype whether the said edge be radial or not radial to the axis of the stereotype; and in means for limiting the rebound of the stereotype when the movement of the latter through the shaving arch, is arrested by the respective sto I ii the accompanying drawings: Figure 1 is a side elevation showing one arrangement of the improved runway roller which latter is represented in vertical section; Fig. 2 is a side elevation and Fig. 3 an end elevation showing means for limiting the rebound of the stereotype; and Fig. 4 is a view similar to Fig. 1 showing a modification.

One type of runway down which a stereotype slides, consists of two parallel series of rollers over which the side edges of the stereotype slide. Usually, as many of the rollers as are within the shaving arch, are mounted, half of them upon a stereotype support on one side, and the other half upon a stereotype clamp upon the other side. The side edges of the stereotype may be either radial to the axis of the latter or they may be sloped to engage under the undercut sides of the holding strips by which they will afterward be secured to the printing machine cylinder. In any case, the peripheries of the rollers should be parallel with the side edges of the stereotype passing over them, and consequently, if the said rollers be of a shape suitable for supporting stereotypes with radial edges they are unsuitable for supporting those with non-radial edges,

.and vice versa.

According to the present invention, the

Specification of Letters Patent.

Patented Dec. 5, 1916.

Serial No. 575,304.

peripheries of the rollers may be either conical or cylindrical the said rollers being arranged so that whatever their shape in that respect, they will, under the weight of the stereotypes, adapt their position to suit the planes of the respective stereotype edges. For this purpose, as shown in Fig. 1, each of the rollers 1 has a cylindrical bore 2, and each of the axles 3 is of conical or barreled form, the cooperation of these two features admitting of the roller assuming different positions on the axle 3, varying from that in which it is shown in full lines, in which it is co-axial with the axle, to that in which its axis is at an angle to the axis of the axle 3. It will be seen therefore that the bores 0f the rollers fit their respective axles near the outer ends, but there is a clearance at both ends gradually growing less toward the point at which they fit. The stereotype plate rests on the rollers in the usual way and as the roller is capable of tilting about the point at which the inner surface of its bore engages the axle, it will take the position shown in Fig. 1, if the bevel on the edge of the plate conforms with the bevel of the surface on which it rests. In other words, this is the horizontal position. If the bevel on the plate does not conform with the angle of this surface the roller will tilt to a slightly different position, forward or backward on the axle.

The axle 3 is secured in any desired manner to its bracket 4, which constitutes no part of the present invention, and the end of the boss 5 of the roller 1, at the end adjacent to such bracket, is of curved or partly spherical form so as to enable the roller to rock as aforesaid while, at the same time, conjointly with a head or disk 6, preventing it from moving axially on the axle 3. The head 6 is secured to the axle 3 by means of a screw 7 and pin 8.

The outer sides of all the rollers 1 of both series, are shrouded, as by the flanges 9, in a particular way, this way depending upon the fact that stereotypes P as they come from the foundry, diifer from each other a little in width. The shroudings of the two series of rollers, are, therefore, far enough from each other to let the widest stereotypes pass, and near enough to prevent as much encounters at the deliveryend of the shav 7 cause at about the moment that the stereoing arch. This rebound is mischievous betype strikes the said stop, the stereotype is 7 first, seized by the springers on the support with the strike.

, and clamp above mentioned, then raised into the shaving arch and. clamped there Qand then shaved and trimmed. If the springers seized it at the moment it struck the stop, there would be no rebound, but as the rate at which the stereotype slides'down the runway, may, and probably will, now and then be aocidentallyimpeded, e. 9., by

' bits of metal in the runway or irregularities on the stereotype edges, it is'impossible to arrange for theseizure to be simultaneous Now it is essential that a stereotype should be up to the stop during the finishing operation. The present invention provides for this, by reducing the rebound above 'mentioned to a safe limit.

Thisreduction is effected by a stop on the entrance end of the shaving archlO, preferably mounted on the crown of the latter,

. and adapted todrop' in the rear of the end it 11 is provided with two rollers 17, 18 of spring 16.

'of' the stereotype at only a short distance from it. The,arrangement may take the formrepresented in Figs. 2 and 3, in'which 11, 12 is a two armed lever, of which, the

'arm 11 constitutes the stop proper, and the arm 12 serves to arrest the stop against rearward .movementunder the rebound of the stereotype 13. The lever 11, 12 ispivoted by a pivot pin lt to a bracket 15 fixed to the shaving arch 10, up to which the end of the 'arm 12 is normally held by a tension CThe underside of the lever arm or stop .wood, leather, or other material which will not damage the type face of the stereotype 13 as the latter is moved beneath them.

' When the stereotype is just about to enter the shaving archlO, its leading end contacts with the roller l'l and thereby turns the lever 11, 12 on its, pivot 14, and afterward either one or both of the two rollers 17, 18

bear on the surface of the stereotype as it i V continues its passage beneath them. Im-.

'mediately afterthe rear'or following end of the stereotype has passed'the roller 17 the spring 16 depresses the arm 11 so that its 1 endis at. a short distance away from the gstereotype'to restrict the reboundof the latter to thedesired safe limit.

I Thebefore, described apparatus is capable 5 ofbeing modified without departing from the spirit of the invention, for instance, instead of the arrangement shown in Fig. 1 wherein the bore 2 is cylindrical and the axle 3 is conical, the practical reverse of this arrangement can obtain, that is to say the axle 3 can be cylindrical and the bore 2 be conical as shown in Fig. 4.

While I have illustrated and described a preferred embodiment of the invention I am aware that many other modifications can be made therein by any person skilled in the art without departing from the scope of the invention as expressed in the claims. Therefore I do not wish to be limited to all the details of 7 construction herein shown and described, but

What I do claim is 1. A stereotype supporting roller and axle for guiding a stereotype printing plate constructed so that the roller can vary its position on the axle, so that its axis can be either co-axial with or at an angle to that of the axle.

on the axle.

3. A runway for stereotype plates having rollers for supporting the edges of the plates and axles for the rollers, the rollers each having an interior bore fitting its respective axle at a point near the outer end thereof but provided with a gradually increasing clearance from that point to the inner end.

4:. In a stereotype plate runway, the combination with a bracket and a headed axle thereon, of a roller on the axle loosely fitting between the bracket and head so as to be immovable as a whole, axially, and having a flange at the outer end and a boss extending from the flange to the inner end of the roller, said roller being rockable longitudinally on the axle.

. 5. In a stereotype plate finishing machine. the combination with a shaving arch, of a lever pivoted to the arch in a position for one end to engage the plate as the plate enters the arch, and yielding means for holding the lever in engagement with the plate, said lever having an arm for engaging the arch and positively limiting the motion of the lever in one direction.

6. In a stereotype plate finishing machine, the combination with a shaving arch, of a spring-pressed lever at the entrance end of the arch having an arm projecting towhen the lever moves beyond the plate after the plate enters the arch, whereby said lever Will receive and check the rebound of the In testimony whereof I have hereunto set plate. I my hand, in the presence of two subscribing 7. In a stereotype plate finishing ma- Witnesses. chine, the combination With the shaving HERBERT PEARCE. 5 arch, of an automatic device for limiting the Witnesses:

rebound of the stereotype after the latter THOMAS ROBERT GlLMiTTE PARKER, has come into the arch. JOHN ERNEST BILLINGTON.

Unmet of this patent may be obtained for five cents each, by addressing the Commissioner of Patenta, Washington, D. 0."

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