SU91944A1 - The method of manufacture for row-stitch typewriter of large-slit matrices - Google Patents

Description

Known methods are made for row-cast type-title machines of large-point matrices, the point of which is made in the form of a copper crown, formed by electroplating and body casting. The disadvantage of these methods is the difficulty of making crowns for each of the letters.

The distinguishing features of the described method are that the crown is electroplated from a typographical font in the form of a string of letters, which is molded into a mold in order to form the matrix body, after which the molded matrix string is cut into separate matrices.

FIG. 1 depicts a large-nut matrix for string-filling-title machines; in fig. 2-section of the frame with the typed font, ragglets and pads, with crowns enlarged on the font; in fig. 3-mold form, side view; in fig. 4 is a cross-section of the mold along the line AB in FIG. 3

The ready-made matrix in the finished form consists, for example, of a copper crown 1 with a dimple point 2 for casting a font and a body 3 formed by pouring a grain in a mold.

To make a crown in the form of a string of letters in a metal frame 4, they type lines from a large-size manual typographical font 5, separated by white space. The strings are separated from one another by regels 6 and celluloid lines 7. After which the font is wedged in a frame, for example, with wood wedges 8 or wrap. In addition to the point of the font and the reglet, the frame and the back side of the font are covered with heated insulating composition. Scoring a font by electroplating copper crowns with a thickness of, for example, 1 -1.5 mm is produced in electroplating baths after degreasing the font. Then, the frame is disassembled, the crowns are filmed and drilled into them along the edges of the holes intended for exact fitting of the crowns onto the pins in the mold.

The mold is made up of two plates 9 and 10 connected by three (Yulta P. Crown 1 is put on drilled holes on pins in plate 9 and pressed against it by means of pressure screws. A plate 13 and a square 14 are laid on the sides between the plates and the crown is on top of it 15, through which molten hart is poured, forming the body of the matrix line 3. To ensure a better connection of the graft with the crown, it is pre-serviced. The cast matrix line is then cut into separate dies.

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The method of manufacturing for row-stitch complete-titulp machines of large-starch matrices, the point of which is made in the form of a copper crown, formed by electroplating, and the body is cast from gart, so that, in order to simplify the process The crown is fabricated in the same way from a typographic font in the form of a string of letters, which is filled with an in-mold mold to form the matrix body, and then the molded matrix row is cut into separate dies.

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