US1189149A - Stereotyping apparatus. - Google Patents

Description

J. IVICNAUGHTO N.

STEREOTYPING APPARATUS.

APPLICATION FILED MAY 5. Is I 5.

1,189,149. Intermed June 27,1916.

lI T" 2 SHEETS-SHEET l. l

MIA I f E A I I .Witnesses l Inventory J. IVICNAUGHTON.

STEREOTYPING APPARATUS.

APPLICATloN Flu-:D MAY 5. i915.

1,1 89,1 49. Patented June 27, 1916.

M 2 SHEETS-SHEET 2.

summum JOHN MCNAUGHTGN, 03F LONDON, ONTARIO, C ANDA. l

Specification of Letters Patent.

STEBEOTYPING 1%.PPARATUS.

mum

Patented .nine 27, 1916.

Ap'pncaatn, mea may serial No. 26,016.

T all whom t may concern:

Be 1t known that I, JOHN MCNAUGHTON,

` a subject of the King of England, residing at London, in the Province of Ontario and Dominion of Canada, have invented a new and useful Stereotyping Apparatus, of which the following is a specification.

This invention relates to apparatus for producing stereotype plates, one of the objects of the invention being to provide a simple form of apparatus which is especially designed for use by persons conducting printing establishments on a small scale and who have thus far been handicapped yin that it' has only been possible for them to use plates mountedon blocks or backs shipped to them -at considerable expense to the advertiser, and which, consequently, has resulted in a considerablel loss of business which might otherwise be secured if the stereotypes could be made and set up as readily as is the case in large printing plants such as conducted by newspapers and publishing houses in the larger cities.

It is Well known to those skilled in the art to which the present invention relates that when an advertising campaign is conducted at the present time, it is the practice to prepare a matrix or mat of papiermch or other standard material and to forward one to each of a number of publishers at comparatively slight cost, the publishers, in turn, preparing therefrom the stereotype plates which are used in printing. Those publishers located in small communities not provided with stereotyping facilities do not profit by suchl an advertising campaign, unless the advertiser is willing to undertake the excessive cost involved in mailing electrotypes or stereotypes mounted on blocks ready to be placed in the presses.

As before pointed out, one of the objects of the present invention is to provide-a stereotyping outfit whereby it is possible for a printer or publisher in any locality to produce stereotypes from a matrix.

A further object is to provide a stereotyping apparatus whereby a stereotype plate can be produced without the many objectionable features now present in stereotyping. For example, it is the practice, When casting a stereotype plate, to pour the metal from a ladle into the casting box, and, in order .that the?? may be suflicient weight of metal to insure the proper packing of the molten metal agalnst the matrix, it bhas been necessary to continue pouring-until the level of metal has risen a, considerable distance above the top of the mat, this surplus vmetal.'

the riser. Thus a considerable quantity of 1 metal in the form of the riser is left at one end of the casting and is useless until remelted.` l

One of the objects of the present invention is to combine With the casting b`ox a melting pot the contents of which are adapted to pour directly into the box When sai-d box is tilted out of its normal position, with the result that the Weight of the'molten contents of the box serves to properly pack the metal against the matrix and, When the box is restored to its normal position, the molten metal remains in the pot and the stereotype produced will be found with but a small riser and thus the metal in use can be utilized to make more stereotypes than would be possible with an equal amount ofmolten metal under the old process.

' Another object is to provide means whereby the molten metal is directed -into the box in a sheet extending throughout the width of the matrix so that the churning or agitation of the metal while entering the box is eliminated and, consequently, the formation of spongy. areas or air holes which so often render stereotypes unfit for use at the present time, is prevented.

Y Another objection present in stereotyping apparatus as now used is found in the fact that before utilizing the casting box it has been necessary to heat the same. This has been done in various Ways, as by pouring molten metal into the box several times.

One of the obj ects of the present invention is to overcome this objection by extending the box from the pot in which the metal is reduced to liquid form, so -that heat is conducted from the pot tothe box and said box. maintained in a Warm condition. The old Way of heating the box is furthermore obv jectionable 'for the reason that it results in making the box of an even heatthrough'out the length thereof. In the present case, however, the box is maintained at a higher temperature close to the pot than at that end v thereof remote from the pot. Thisresults in the formation of a better stereotype, for the reason that it is desirable to have the metal cooled first at that end of the box remote from the pot and then gradually to- Ward the pot.

Another object is to provide apparatus of this character utilizing what I term a cupped matrix whereby it becomes unnecessary to rout the marginal portion of the stereotype as heretofore.

With the foregoing and other objects in view which. will appear as the description proceeds, the invention resides in the combination and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention. herein disclosed, can be made within the scope of what is claimed, Without departing from the spirit of the invention.

In the accompanying drawings the preferred form of the invention has been shown.

In said drawings: Figure 1 is a vertical longitudinal section through the stereotyping apparatus constituting the present invention, the normal position of the box and pot being shown in full lines and the posi tions. thereof during the casting operation being shown by dotted lines. Fig. 2 is an end elevation of the upper portion of the apparatus, parts being broken away. Fig. 3 is a top plan View, the top plate being removed. Fig. 4 is a transverse section through the casting box, said section being taken on the line A-B Fig. 1. Fig. 5 is an enlarged section through a portion of the matrix and showing how the same is produced in cupped or dished form.

Referring to the figures by characters of reference 1 designates a post upstanding from a base 2 and provided, at its upper end, with a head 3 supporting a laterally extending shaft 4, there being an arcuate arm, 5 extending from the head and provided Witha stop lug 6 extending laterally therefrom near the free end thereof, there being a notch 7 above the lug and extending laterally into the arm 5, for the purpose hereinafter set forth. The structure described constitutes only' one of many forms of support that might be employed' for holding the casting box and pot constituting the main portion. of the present invention.

Mounted to slide and rotate on the shaft 4 are ears 8 depending from the side portions of the base section 9 of the castingbox, this base section being provided, at one end, with a pot 10 Ahaving its bottom formed with a fiat normally inclined 'por- .tion 11 extending to the plate 9 and of a width, at its upper edge, but slightly less than the width of the plate 9. Formed along the sides and outer end of the plate 9 is a continuous fiat rib or bearing 12 merging into the Hat side faces-13 extending laterally from the pot 10. A .transverse groove 14 is formed in the base plate 9 close to the discharge end of the pot 10 and this groove intersects the bearings 12'and is designed to receive a clamping strip 15 which may be hingedly connected to one side of plate 9 as shoWn at 16. The metal plate 9 is comparatively thin, and it has been found, as a result, that by removing a portion of the metal from the bottom of plate 9 along lines extending transversely of the plate and close to the pot 10, as shown at 17, molten metal when poured into the casting box will cool as readily adjacent the center of the plate 9 close to the pot 10, as at the sides of the plate.

An ear 18 is extended laterally from one side of the pot 10 and is adapted, when plate 9 is shifted laterally along the shaft 4, to enter the notch 7 and thus hold the plate against swinging movement. When, however, the said plate is pulled laterally along shaft 4f in the opposite direction, ear 18 will be withdrawn from the notch 7 and the pla-te 9 is thus free to be tilted as shown by dotted lines in Fig. 1. A stop pin 19 may be extended through the shaft i to limit the sliding movement of the plate 9.

A cover piate 20 is adapted to be used in connection with the plate 9 and pot 10 and is provided, along its-sides and one end with continuous ribs or bearing members 2. adapted to cooperate with the bearing mem bers 12 to hold the marginal portion of the matrix in position. Plate 20 extends any desired distance across the pot 10 and is provided with handles 22 whereby it can be moved readily into and out of position. This plate may be provided with ears 23 at the sides thereof adapted to be engaged by bolts 24 pivotally connected to the sides of the plate 9 and carrying clamping nuts 25. By providing a means of this type, plate 20 can be fastened securely to the plate 9. It will be understood, however, that any other suitable means may be provided for holding the parts together. heater 26 is adapted to be arranged under the pot 10 so as to heat the contents of the Pmi' The apparatus herein described requires the use of a matrix of special form, the same being designated by me as a cupped or dished matrix. This matrix is produced of the usual materials and is made by arranging the printing form 27 (see Fig. 5) between bearing members 28 which terminate below the face of the form a distance equal to the height of the bearing members l2. The matrix M is then pressed down onto the form 27 and bearing members 28 with the result that it is given a cupped or dished contour with the side and end flanges N, the

Any suitable form of of the matri'x.

impressions (produced by the type form being produce in the inner or concave Aface In using the apparatus, the type metal is placed in thepot 10' and heated so as to be reduced to liquidform. Plate 20 is removed and the strip 15 is shifted, from the groove 14. The matrix which is supplied to" the user of the apparatus is adapted to fit snugly on the plate 9 with its anges NA resting on the bearing members 12. The 11pper margin of the .matrix is left projecting beyond one. end ofthe body of the matrix and is adapted to extendacross the groove 14, after which the strip 15 is pressed `down against the projectihg portion of the ong 'and will bind it against the walls of the groove, thus securely fastening one end of the matrix to the plate 9 so that when the metal is poured froni the pot it cannot enter between the matrix and the plate, 9. A sheet of paper is then placed over the matrix and the outlet portion of the p ot, this sheet being indicated at Oy in Figs. 1 and 4, after which the plate 20 is placed in position and secured by the means provided therefor, thus to clamp the flanges N and the edges of the sheet O together and between the bear- I ings 12 and 21, as shown particularly in Fig. 4. After the parts have thus been secured the plate 9 and all of the parts connected thereto, is shifted laterally along the shaft 4 so as to disengage ear 18,from arm 5. The said plate 9 is then swung downwardly to the position indicated by dotted lines in Fig. 1. This will result in a portion of the molten metal falling in a broad sheet oif of the inclined portion 11 of the bottom of the box and into the space between the matrix and the sheet O. By the time the front or advancedA portion of the sheet .of

molten metal reaches the bottom of the casting box, the entire box will have been lled with metal a'nd this metalwill be packed properly into the depressions in the matrix by the weight of the molten metal` contained in the pot 10. Immediately following this operation the structure is swung back to its initial or horizontal position, that portion of the metal taking the place of the ordinary cool at said cool end; Thus there will be no danger of the casting cooling first at the inletend of the box,'rather than at the other end and the consequent undesirable crystallization of the metal forming the plate. As

'l before pointed out, a portion of the metal is removed from under the plate 9 as at 17, with the result that instead of the metal gradually cooling along deeplycurved lines, 1t will be'coled along lines extending sub- Y stantially straight across thecasting box close to the inlet thereof. In other words, without removing the metal at 17, the late would first cool by the sides of thevbox, eaving a molten mass at the center of the box close tothe inlet thereof for a considerableA time after the sides have cooled. It has been found in practice that thisv uneven cooling will result in an inferior product.

To remove the plate it is merely necessary l to detach thecover 20, whereupon the plate can be lifted out of the apparatus and it will be found that by utilizin a cu ped or dished matrix such as describe ,thep ate will have its edge portions depressed below the printing face so that no routing will be neces- I sary, as where the marginal portions of the plate are type-high. The plate can be trimmed as ordinarily and vit will be found Vthat but va very narrow riser is formed thereeoA the parts so connected that when the metal is poured from the pot 10 it will gravitate into the casting box. n

Obviously by providing apparatus such as described, any person, even though unskilled in the art o f stereotyping, can produce high class stereotypes when supplied with a maf trix Iittedt the apparatus. Thus it ispossible for publishers who have .heretofore been unable" to utilize a matrix because not provided with stereotyping facilities, to produce and use stereotypes as cheaply as the largest publishers.

What is claimed is 1. Stereotyping apparatus including a plate having a matrix receiving recess, means cooperating with the plate for engaging the marginal portion of a cupped matrixseated in the recess, and a meltlng pot at one lend of the plate and movable therewith, said plate being tiltably mounted. 1'

2. Stereotyping apparatus includin a -plate having upstanding bearing mem ers forming a matrix receiving recess therebetween, means coperating with said bearing members for engaging the mar inal portion of a cupped matrix'seated in' he recess', and a melting pot at one end of the plate and movable therewith, said plate being tiltably mounted.

3. stereotyping apparatus 'including a plate having a matrix receiving-recess and provided with upstanding bearing portions, means for clamping the marginal portion of a cupped matrix upon said upstanding portions, a pot for directing a sheet of molten metal onto the held matrix, and means for tiltably supporting the plate and pot.

4. Stereotyping apparatus including a tiltably mounted plate having a matrix receiving recess and upstanding bearing portions extendin continuously along the sidesO and one end o the plate, means coperating with said bearing portions for holding the marginal portions of a cupped. matrix, and a melting pot at the other end of the plate for directing onto the matrix a sheet of molten metal of a width substantially equal to the width of the printing face of the plate to be produced.

5. The combination with a movably supported plate having a matrix receiving recess, there being marginal upstanding bearing portions extending continuously alo-ng three sides of the plate, of a cupped matrix removably mounted in the recess and having the printing impressions in the concave face thereof, there being marginal flanges upon the matrix and engaging said bearing portions, means for clamping said flanges upon the bearing portions, and a meltingpot movable with the plate for directing molten metal onto the concave face of the matrix.

\ 6. Stereotyping apparatus including a plate tiltably and slidably mounted, said plate having upstanding bearing portions extending continuously along three sides and forming a matrix receiving recess therebetween, a melting pot carried by the plate and constituting means for directing molten fluid onto the plate from the remaining side thereof, means detachably connected to the plate for binding the marginal portion of a matrix onto said bearing portion, a holding element fixedly mounted, and means movable with the potl during the sliding move ment of the plate in one direction, for engaging said holding means to fasten the plate against tilting movement.

7. Stereotyping apparatus including a support, a shaft extending therefrom, a plate tiltably and slidably mounted on the shaft, a melting pot at one end of the plate, means coperating with the plate for engaging and holding a cupped matrix in position to receive molten metal from the pot whenthe plate is tilted, a holding means, and means cooperating with said holding means to secure the plate and pot against tilting movement when said upon the shaft.

8. In stereotyping apparatus, the combination with a tiltable plate and a melting pot at one end of the plate and movable therewith, of a cupped matrix supported by the' plate, a cover plate for engaging the plate is slid in one direction marginal portion of the matrix to secure said matrix in position, said cover plate extending over the pot.

9. Stereotyping apparatus including a casting box tiltably mounted, a melting pot at one end of the box for directing into the box a sheet of metal substantially equal in width to the width of the interior of the box, the bottom of the box being thinned toward the center thereof adjacent the pot.

In testimony that I claim the foregoing as my own, I have hereto ailixed my signature.

JOHN MGNAUGH'ION.

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