US790348A - Linotype-machine. - Google Patents

Description

PATDNTBD MAY 23, 1905.

. i P. fr. DDD'GDA. LINDTYDD MACHINE.

APIPLIOATIDN FILED DEPT. 1A, 1904.

a sums-sanare,

No. 790,348. i

I UNITED 4STATES Patented May 23, 1905.

PATENT OFFICE."

THALER LINOTYPE COMPANY, ANOORPORATION OF NEW YORK.

SPECIFICATION forming pari of Letters Patent Nb. 790,348, dated May 23, 1905i Application ined september 1,1904. serial No. 223,008.

To all. whom it may concern.-

Be it known that I, PHILIP T. DODGE, of Brooklyn, county of Kings, and State of New York, have invented a new and useful Improvement in Linotype-Machines, of which the following is a specification. My invention has reference to the Mergenthaler linotype, such as shown in United States Letters Patent No. 436,532, and analogous machines wherein a melting-pot'is arranged to deliver molten metal through aperforated or slotted mouth into 'a slotted mold and against a series of matrices assembled temporarily against the face of the-mold for the purpose of producing a linotype or printing slug. In these machines it is necessary that the flat mouth of the melting-pot shall fit closely against the fiat back of the mold in order to close the mold and prevent the leakage or overflow of metal between them, the metal being delivered under substantial pressure. Heretofore the melting-pots have been mounted to swing on vhorizontal pivots or to move on horizontal guides to and from the mold or the mold mounted to slide to and from the pot, the parts being in every instance positively and accurately guided with the idea of maintaining their faces parallel with each other und er all conditions. In practice it has been found that, owing to the repeated and unequal heating and cooling of the parts and other causes, the mold and the mouth of the pot are liable to lose their alinement or parallelism, and in consequence of this fact it was frequently necessary to dress or refinish the mouth of the pot or readjust the parts in order to insure a close union with the back of the mold.

The object of my invention is to overcome this difHculty; and to this end` it consists, broadly, in so mounting the pot having a fiat mouth to lit directly against and close a fiat mold that it may rock or turn horizontally in order that its mouth may adjust itself tightly to the back of the mold. The means for supporting the pot and for moving the same to and from the mold, if of the movable type, may be modified at will, provided only the pot is supported at the proper level and arranged to rock orturn horizontally in the .plane of the length of the mold to an extent 'sufficient to insure close contact of its mouth with the mold when the two are brought together.

` In the accompanying drawingsl have shown the invention embodied in its preferred form in the commercial Mergenthaler linotype-machine of the present day.

Referring to the drawings, Figure l represents aplan view of the pot with the top of the jacket or casing removed, the mold being shown in outline. Fig. 2 is a vertical section from front to rear on the line 2 2 of the preceding figure through the pot and the mold. Figs. 3, 4c, and 5 show alternative constructions.

Referring to the drawings, A represents the pot or Crucible, in which the supply of typemetal is maintained in a molten condition by means of a flame thereunder. It is constructed with a delivery-throat a and'with a mouthpiece a', having a fiat outer surface adapted to close tightly against 'the rear face of the mold B and with a row of perforations therethrough for delivering the metal into the mold-cavity or mold proper. This pot is also provided with a vertical cylinder or well a2, communicating with the delivery-throat and containing a mechanically-actuated plunger C, bymeans of which the forcible delivery of themetal is effected.

D represents a supporting jacket or frame, in which the pot or Crucible is sustained and by which it is moved to and from the mold. The jacket is provided with supporting-legs d, mounted to rock on a fixed horizontal axis E, this arrangement permitting the jacket and the contained pot to swing forward and backward to and from the mold B under the influence of an operating-cam.

So far as described the foregoing parts are of the ordinary construction and operate in the ordinary manner.

Heretofore the pot or crucible has been secured rigidly in place within the sustainingjacket, and the alinementof the mouthpiece a with the mold has been effected by adjusting the legs d on their supporting-pivot E by means of intermediate screws and other devices,whieh are now omitted. In carrying my invention into effect I support the erucible A loosely within the jacket, so that it may turn or rock horizontally in the plane of the length of the mold. In the preferred form shown in the drawings the weight of the pot is sustained by three ears or studs a1 a5 ce formed on its upper end and seated loosely in cavities in the upper part of the jacket D. The jacket D is provided with a top or lid (Z2, secured rigidly to the lower portion. This lid carries a vertical stud or pivot-pin F, which projects downward into a corresponding seat in the top of the pot A, forming the center or axis about which the pot may turn within the jacket to a limited extent. This pivot F is preferably made of hardened steel, with its upper end seated tightly in the cap and secured by a screw f; but it may be made in any other suitable form. In order to reduce the friction between the pot and the sustaining-jacket, balls Gr may be inserted between the supporting-ears of the lpot and the upper partof the jacket, as show n; butthey are not of the essence of the invention.

Vhile it is preferred to arrange the pot to rock about a pivot, as above described, it may be mounted to rock on a V-shaped or eq uivalent support F' at the rear side, as shown in Fig. 4, or, as shown in Fig. 3, aseries of balls or vertical rollers F2 may be seated around the cylindrical portion of the pot and against the inner circular wall of the jacket.

The jacket containing my oscillating or selfadjusting pot instead of being mounted to rock on supporting-legs may be arranged to slide forward and backward on fixed horizontal guides I, as indicated in Fig. 5. This method of supporting the pot is old in the art and is not claimed as a part of my invention.

The form of jacket or support, the manner of sustaining the same, the form of the pot, and the connection between the pot and the jacket all may be modified at will, provided the flat-faced mold and fiat-faced pot and the cooperating parts retain a mode of action essentially such as herein described.

Having described my invention, what I claim is- 1. In a linotype-machine, the combination of a slotted mold having a liat rear face,a metalpot having a fiat mouth adapted to directly close the back of the mold and deliver metal thereto, and a support wherein the pot is free to turn in the plane of the length of the mold,

'substantiall y as described, whereby the mouth of the pot is permitted to assume automatically a proper alinement against the rear face of the mold.

2. In a linotype-machine, a pot, having an elongated flat mouth and mounted to turn freely in the plane of the length of its mouth, in combination with a flat mold arranged to cooperate directly with and to be closed by the mouth of the pot and to receive metal therefrom.

3. A pot for a linotype-maehine, comprising a jacket or support, a pot proper having` an elongated flat-faced month, and intermediate connections permitting the pot to turn freely in the jacket in the direction of the plane of its length.

4. In a linotype-machine, the combination of the following elements: a slotted mold having a fiat rear face, a pot having a iiat month adapted to close tightly against the mold to close the same and to deliver metal thereto, a pot-support movable in a horizontal direction to and from the mold, and intermediate connections between the support and the pot permitting the latter to turn in the plane of the length of the mold.

In testimony whereof I hereunto set my hand, this 31st day of August, 1904, in the presence of two attesting witnesses.

PHILIP T. DODGE.

IVitnesses: Y

MARGARET DoYLn, ALICE OBRIEN.

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