US796778A - Linotype-machine. - Google Patents

Description

No. 796,778. PATENTED AUG. 8, 1905.

` F. A. VINTON.

LINOTYPE MACHINE.

APPLIUATIQN FILED nu.. 15, 1905.

2 sums-SHEET 1.

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PATBNTBD AUG. 8, 1905.

F. A. VINTON. LINOTYPE MACHINE. Prummel FILED ma. 15. 1905 SHEETS-SHEET 2.

IINITED STATES PATENT OFFICE.

FRANK A. VINTON, OF BALTIMORE, MARYLAND, ASSIGNOR TO MERGEN- THALER LINOTYPE COMPANY, A CORPORATION OF NEW YORK.

LINOTYPE-NIACHINE.

Specification of Letters Patent.

Patented Aug. 8, 1905.

T0 all whom, it may concern,.-

Beit known that I, FRANK A. VINTON, of Baltimore, State of Maryland, have invented a new and useful Improvement in Linotype- Machines, of which the following is a specification.

This invention has reference more particularly to Mergenthaler linotype-machines of the general organization represented in United States Letters Patent No. 557 ,000, wherein a printing slug or linotype is cast in a slotted mold and temporarily closed at the front by a composed line of matrices which form the characters on the edge of the slug and intermediate wedge-spacers which serve to ll out or justify the composedline. In these machines the unjustified line of matrices and spacers is lowered. to the casting position in front of the mold between two jaws which confine the line endwise and determine its length. If the line presented between the jaws is of less than the proper length, so that i't cannot be expanded tightly and to the full length by the spacers, the molten metal will escape from the mold between thematrices with serious results. To overcome this diiiculty, it is the practice to employ-as shown, for example, in United States Letters Patent to Bates, No. 659,865-a stop device for the pump which delivers the molten metal into the mold, this device being actuated by the righthand jaw, which is pressed inward beyond its normal or operative position by -a spring, so that if the descending line is of proper length, but not otherwise, it will crowd the jaw backward and throw the stop out of action, leaving the pump free to deliver the metal. In practice it is found that there is objection to the employment of the jaw pressed inward by a spring beyond its operative position, for the reason that the resistance of the jaw to the descending matrices is liable to displace those matrices at the end of the line which are forced against it.

The aim of my invention is to overcome this difliculty by omitting the jaw-actuating spring and leaving the jaw ordinarily in its operative position, so that it will offer no resistance to the matrices. To this end I combine with the movable metal-pot or other mechanically-actuated part of the machine means whereby the pump-stop connected with the movable jaw is caused to operate if the line is too short, but not otherwise. Y

Referring to the drawings, Figure l is a plan view of the casting mechanism of a linotypemachine with my improvement applied thereto. Fig. 2 is a perspective view of the same.

Referring to the drawings, A represents the vise or frame of the machine.

B and C are the right and left hand jaws to confine the matrix-line endwise.

D is a line of matrices suspendedv between the jaws from the usual elevator E.

F is the mold-carrying wheel; Gr, thel mold therein, seated against the rear faces of the matrices, and H the metal-pot, arranged tor swing forward and backward in-order to carry its mouth against and away from the rear face of the mold.

I is the pump-plunger by which molten metal is delivered by the mouth ofthe pot into the mold.

J is the vertically-movable lever by which the plunger is actuated.

K is the pump-stop, in the formof a hori- Zontal angular lever pivoted to the frame and arranged to engage beneath a projection on the side of the pump-lever to prevent the latter from falling when the casting action is to -be prevented.

L is the stop-actuating lever, connected near its middle to the main frame with a vertical pivot, with one end arranged to actuate the stop-lever M and the opposite end arranged at the rear end of the jaw B, which is permitted a short sliding movement.

The foregoing parts are of ordinary construction and arrangement except that the spring heretofore used for urging the jaw B toward its companion C is now omitted. In place of this spring I attach to the top of the pot or to its actuating-lever a yielding arm or spring N in position to act against the stoplever M and throw it into operativeposition when the pot H swings forward to its casting position against the mold.

The operation is as follows: The jaw B, which is limited as to its backward movement, stands normally at a distance from its companion C equal to the length of the required line. The elevator E descends and lowers the matrices to their position between the jaws. The mold then advances against the matrices and the pot advances against the rear face of the mold. During such movement its arm N acts against the stop-lever M and tends to cause its engagement with the pump-lever to prevent the action of the pump. If the line of matrices presented between the jaws is of proper length, the jaw B will be held back thereby and will in turn through the lever L hold back the stop M, so that it cannot be thrown into action, and the parts will operate in the ordinary manner. If, however, the line presented between the jaws is too short, it will fail to hold back the jaw B and lever L, and consequently the advancing arm N will be permitted to throw the stop into engagement and prevent the casting action.

It will be observed that under my arrangement Aof parts the jaw B is entirely relieved from pressure and that it is free to move back without resistance, so that the descending line of matrices whether long or short may enter freely and without resistance therefrom.

The matrix-line in my mechanism is utilized simply to prevent the action of the locking devices and not, as in previous mechanisms, to throw the locking devices out of-action.

The essence of the invention lies in utilizing the matrix-line to prevent the action of a mechanically-actuated vstop,.so that the matriX-line in descending to its place is not required to crowd the jaw backward against resistance, and it is manifest that the details may be variously formed and arranged without departing in substance from the mode of action herein shown.

My invention is applicable alike to machines for casting linotypes, logotypes, and individual types-in short, to all typographic machines in which matrices are presented to a mold.

, Having described my invention, what I claim is 1. In a typographie machine, the combination of a pump, a pump-stop normally out of action, means to throw the same into action when the matrix-line is shorter than required, and means actuated by the matrices to prevent the action of the stop when the line is of full length.

2. In a typographie machine, the combination of means for delivering metal to the mold, a stop to prevent its action, a mechanicallyactuated device tending to throw the stop into action, and means acted upon by the matrices to prevent the action.

3. In a linotype-machine, the combination of the movable matrivX-coniining jaw B, the pump-lever J, the stop M therefor, means connecting the jaw and the stop to hold the latter out of action when the matrix-line is of proper length, and means connected with a moving part of the machine to throw the stop into action when the matrix-line by reason of its shortness fails to prevent the action of the stop.

4:. In a linotype-machine, the combination of a matrix-confining jaw, a lever L actuated thereby, a pump-lever, a stop therefor actuated by the first-named lever, and a yielding arm N, movable with the, pot to throw the stop into action.

In testimony whereof I hereunto set my hand, this 28th day of February, 1905, in the presence of two attesting witnesses.

FRANK A. VINTON.

Witnesses:

4 ALBERT K. MUNDHEIM,

L. P. KENNEY.

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