US576397A

US576397A - Linotype-machine

Info

Publication number: US576397A
Authority: US
Publication date: 1897-02-02
Anticipated expiration: 1914-02-02

Description

(No Model.)

P, T. DODGE. LINOTYPE MACHINE.

No. 576,397. Pate nt ed Feb. 2, 1897.

U NiTEo STATES PATENT OFFICE.

PHILIP T. DODGE, OF NEW YORK, N. Y., ASSIGNOR TO THE MERGENTHALER IJINOTYPE COMPANY, OF NEIV YORK.

LINOTYPE- SPECIFICATION forming part of Letters Patent No. 576,397, dated February 2, 189).

Application filed September To (all whom it 7)l/!t 7/ concern:

Be it known that I, PHILIP T. DODGE, of New York city, county of New York, and State of New York, have invented a new and useful Improvement in Linotype-Machines,

of which the following is a specification.

In linotype-maehines, such, for example, as that represented in Letters Patent to O. Mergeuthaler, No. 436,532, the liuotypes or slugs 10 are cast in a slot-ted metal mold, the molten metal being delivered into the mold through a series of small openings in the mouth of the melting-pot, which is arranged to close for the time being tightly against the back of the mold. It is the common practice to change the length of the mold or to substitute a mold of one length for another of different length, in order to vary the length of the slug produced. When a short mold is used, there are obviously a number of delivery-openings in the pot-mouth beyond the limits of the mold-slot which are not used for the delivery of metal. In practice it has been found advisable to temporarily fill these idle holes 2 5 with cement or other similar material or to remove the mouthpiece and substitute another having a row of delivery-openings equal in length to the mold.

The object of my invention is to avoid the 0 delay, trouble, and expense incident to such operations and to provide a mouthpiece in which any desired number of the deliveryopenings, commencing at one end, may be closed, according to the length of the mold 5 employed. To this end I combine'with the mouth of the pot a movable strip or bar adapted to cover and close the openings. This bar may be arranged to slide endwise into a groove within the mouthpiece, or when 40 the mouthpiece is removable, as usual, a groove may be formed in the .face and the closing-strip laid removably therein, so that it may be adjustable to one position or another, as demanded. I

Figure 1 represents a perspective view of the pot provided with my improvement. Fig. 2 is a perspective view of the inner face of the mouthpiece detached and provided with my improvement. Fig. 3 is a vertical 5o cross-section through the mouth of the pot in a fore-and-aft direction.

A represents the body of the pot, in which the metal is-melted and in which there is mounted a pump-plunger for the purpose of delivering the molten metal through the mouthpiece into the mold, as usual.

13 represents the mouthpiece, having a flat face to fit against the rear side of the mold and having a series of openings 0, through which the metal is ejected. This mouthpiece may be fastened permanently in position, or it may be removably secured, as usual. In its rear face I form, as shown in Fig. 2, a longitudinal groove (1, extending across the inner ends of the delivery-openings, and into this groove I lay or slide a covering-strip 6, adapted to fit snugly therein and to cover and close a numberof the openings. This strip may be made of considerable length and adapted to move endwise to close a greater or a less number of the openings, according to the length of the mold to be employed, or a separate strip of appropriate length may be provided for each length of mold and laid in the groove from the rear, as shown in Fig. 2. The covering or closing strip may be of dovetail or of rectangular form in cross-section. One of rectangular section is shown in Fig. 3. It will be held securely in place between the rear 8; face of the mouthpiece and the front of the mold proper.

The essence of my invention lies in combining with the pot-mouth adapted to deliver molten metal from a certain portion of its width the adjustable covering or closingdevice to prevent the escape of metal from a portion of said width. In some cases potmouths are made With a continuous slit for the delivery of the metal instead of a series of holes, and it is obvious that my improvement is applicable to, pots in both forms.

Having thus described my invention, what I claim is- V 1. In a linotype-machine, a melting-pot 5 having a delivery-mouth in combination with an adjustable metallic device closing said mouth for aportion of its Width.

2. In a linotype-machine and in combination with the melting-pot having a deliverymouth, the adgustable closing device (2, substantially as described.

3. In a linotype-inaohine a melting-pot hand this 1st day of September, 1890, in the and a removable perforated mouthpiece presence of two attesting Witnesses. therefor in combination with a movable r closing clevioe, e, inserted between the mouth- PHILIP DODGE 5 piece and the pot proper, substantially as Vitnesses:

shown. GEORGE II. SMITH,

In testimony whereof I hereunto set my MARGARET DUNN.