US643329A - Linotype-machine. - Google Patents

Description

No. 643,329. Patented Feb. I3, I900.

J. MAcKlBDY.

LINUTYPE MACHINE.

(Application filed Mar. 21, 1888.)

(No Model.) 2 Sheets-Sheet I.

A770 NE),

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No. 643,329. Patented Feb. l3, I900. J. MAOKIRDY.

LINOTYPE MACHINE.

(Application filed. Mar. 21, 1898.)

(No Model.) 2 Sheets-Sheet 2.

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WITNESSES rn'rns V Parana tries.

JAMES MAOKIRDY, OF NEW YORK, N. Y., ASSIGNOR TO THE MERGENTIIALER LINOTYPE COMPANY, OF NElV YORK.

LINOTYPE MACHlNE.

SPECIFICATION forming part of Letters Patent No. 643,329, dated February 13, 1900.

Application filed March 21, 1898. Serial No. 67 L603. (No model.)

To all whom it may concern.-

Be it known that I, J AMES MACKIRDY, of New York, (Brooklyn,) countyof Kings, and State of New York, have invented a new and useful Improvement in Linotype-Machines, of which the following is a specification.

In the Mergenthaler linotype-machine such as represented in Letters Patent of the United States No. 436,532, dated September 16, 1890, the composed line of matrices is shifted horizontally into a grooved or channeled support having a rising-and-falling motion and commonly denominated the first elevator. The matrix-line is pushed into this elevator from the left and lowered thereby to the mold,

after which the elevator rises to a level higher,

than that at which it received the matrices, and they are pushed out toward the right for transference to the distributing mechanism. As the elevator is open at the right-hand side, it is necessary to provide it with dogs or retaining devices to hold the matrices after their introduction and while the elevator is being lowered and raised, and this in order to prevent the matrices from escaping at the open end. The dogs, pawls, or retaining devicesheretofore in use have been of a complicated and delicate character and required to be mechanically operated in order to lock and unlock the end of the matrix-line.

The object of the present invention is to simplify the means for retaining the matrixline within the elevator, avoid the necessity of cooperating parts, and still admit of the line being shifted right and left into and out of the elevator without difficulty and with out injury to the matrix characters.

To this end it consists, broadly, in pawls or dogs applied to the elevator and so formed that they will yield under moderate pressure exerted by the matrices moving in either direction.

I have limited the drawings forming part of this specification to those parts which are necessary to a proper understanding of my invention. In all other respects the machine may be constructed in accordance with the patent above named or in any other suitable manner. 7

The elevator herein shown corresponds in general construction and mode of operation to the part N in Patent No. 436,532, and the pawls herein shown are intended as substiceding figure in order to expose the pawls to view. Fig. 4 is a vertical cross-section on the correspondingly-numbered line. Fig. 5 illustrates in side elevation and in top plan view one of my dogs or pawls. Figs. 6 and 7 are horizontal sections on the same level as Fig. 3, showing, respectively, the action of the outgoing-and incoming matrices.

The elevator N consists simply of a horizontal block or head having a vertical slot or opening therethrough from its right end inward a sufficient distance to receive a composed line of matrices. This elevator is grooved internally to receive the shoulders of the matrices and give them support and is in all respects of ordinary construction, except as to the dogs or pawls 0 forming the subject of the present invention.

In the operation of the machine the line of matrices enters the elevator moving toward the left, as shown in Fig. 6, and as the final operation leave the elevator, moving to the right, as shown in Fig. '7. I dispense with the ordinary dogs or pawls used in the elevator and substitute therefor the two horizontal pawls 0 located one on each side. These pawls consist each of a piece of spring metal bent at one end, as shown in Fig. 5, to form aprojection, beveled orinclined on both sides. They are laid into grooves in the outer sides of the elevator, and their projections extend through openings into the interior. They protrude somewhat beyond the inner vertical walls of the elevator, as shown in the several figures. As the matrix-line enters, as shown in Fig. 6, it acts between and against the ends of the pawls, which yield and move outward, allowing the line to pass between them,

after which they close outside of the line, as shown in Fig. 7, so that the matrices are prevented from sliding out and escaping accidentally. When the matrix-line is to be removed, the pressure applied thereto causes the dogs to yield and spring outward, so that the matrices may escape between them. Thus it will be seen the dogs are opened automatically by the action of the matrices.

The essentials of my invention reside in the employment of pawls or dogs Which, although retaining the matrices under ordinary oonditions,will yield Whenever the line is forced strongly against them in either direction.

What I claim as my invention is- 1. As animprovementin linotype-machines, and in combination with the elevator, matrixretaining dogs or pawls, beveled in both directions, in order that they may yield before the incoming and the outgoing matrices.

2. As an improvement in the Mergenthaler linotype, the elevator grooved in its side 'Walls, in combination With the externally-appresence of two attesting Witnesses.

JAMES MAoKIRDY. Witnesses:

W. A. MCOALL, W. H. GREELEY.

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