US1527384A - Stereotype matrix - Google Patents

Stereotype matrix Download PDF

Info

Publication number
US1527384A
US1527384A US542120A US54212022A US1527384A US 1527384 A US1527384 A US 1527384A US 542120 A US542120 A US 542120A US 54212022 A US54212022 A US 54212022A US 1527384 A US1527384 A US 1527384A
Authority
US
United States
Prior art keywords
matrix
impression
paste
flong
stereotype
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US542120A
Inventor
Wirth Franz Wilhelm
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of US1527384A publication Critical patent/US1527384A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41CPROCESSES FOR THE MANUFACTURE OR REPRODUCTION OF PRINTING SURFACES
    • B41C3/00Reproduction or duplicating of printing formes
    • B41C3/02Stereotyping

Definitions

  • the new method has for its object the production of a matrix which will permit of the production of many castings without the impression of the face of the letters being altered in any way even; for example, which will remain in its original condition after 100 castings have been taken.
  • the new method consists in this that the flongs-prepared in the usual manner-are treated by spraying, painting or the like on the lHlPlGSSlOD-SlClG with a liquid, which contains heat-insulating means (borax and am- 1noniumsulphate) and fermentation preventing means (for example carbolic acid), and on i the rear side with paste, to which preferably a medium preventing fermentation is added, and to the paste layer is applied a covering sheet of paper or like material which is impenetrable by the paste.
  • the flong thus treated is thereupon applied to the forme, treated in the press under pres sure and then, while still under pressure, is subjected by heating to a short drying operation of about one or two minutes dura tion.
  • the impression side of the matrix is rendered insensitive to the influence of heat.
  • the flong is rendered flexible just at the moment the impression is taken and the means for rendering it flexible, namely the paste, is so distributed in the flong that it reaches the critical parts, that is the edges of the letters and the like.
  • a kind of cushion is formed which permits of obtaining a sharp impression which is retained on drying.
  • the paste materials thus distributed form a rib, which acts as a stiffening and prevents the contraction of the matrix
  • the whole of the process can be carried out in a very short interval of time, the application of the liquid to the impression side and the application of the paste to the rear only requiring a few movements of the hand and, the impression and drying being matters only of a few minutes.
  • the matrix produced by this process can be used either at once or after an interval of time. More over, between the separate castings suitable intervals of time may elapse.
  • the process may be carried out as follows :-On the impression side of the fiong of pulp produced in the usual manner there is finally distributed by spraying or otherwise a liquid composed of 1 kg. water, 50 gr. ammonium-sulphate, 15 gr. borax, 20-gr. boric acid and 3-gr. carbolic acid.
  • the rear side of the flong is then coated with matrix paste to which some dextrin has been added.
  • a sheet of unsized paper which may also be slightly coated on its adjacent surface with paste.
  • the flong thus produced is placed with its impression side on the type and introduced into a press.
  • the impression isproduced in this press, means for heating being provided so that the impression and dryingare effected at the same time. It is sufficieiit if the flong with the torme remains in the press for one or two minutes. After the removal from the press the matrix thus completed is quite ready for use.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Adhesives Or Adhesive Processes (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
  • Paper (AREA)

Description

Patented Feb. 24, 1925.
UNITED STATES FRANZ WILHELM WIRTI'I, OF DRESDEN, GERMANY.
STEREOTYPE MATRIX.
No Drawing.
To all 1071011246" may concern Be it known that I, FRANZ VILHELM burn, a citizen of th Republic of Germany, residing at Seminarstrasse 22, Dresden-A, Germany, have invented certain new and useful Improvements in Stereotype Matrices, of which the following is a specification.
The usual stereotype matrices are, as is wellknown, worn to such an extent after a few castings have been taken therefrom that sharp impressions of the faces of the letters cannot be obtained This is due to various causes which are further explained in the following description of the new method.
The new method has for its object the production of a matrix which will permit of the production of many castings without the impression of the face of the letters being altered in any way even; for example, which will remain in its original condition after 100 castings have been taken.
The new method consists in this that the flongs-prepared in the usual manner-are treated by spraying, painting or the like on the lHlPlGSSlOD-SlClG with a liquid, which contains heat-insulating means (borax and am- 1noniumsulphate) and fermentation preventing means (for example carbolic acid), and on i the rear side with paste, to which preferably a medium preventing fermentation is added, and to the paste layer is applied a covering sheet of paper or like material which is impenetrable by the paste. The flong thus treated is thereupon applied to the forme, treated in the press under pres sure and then, while still under pressure, is subjected by heating to a short drying operation of about one or two minutes dura tion.
It has already been proposed to introduce the matrix pulp by beating, calendering or pressing into the forms and then to take the impression under high pressure and thereafter to dry the matrices so formed together with the type forme utilizing heating and pressure for this purpose. This method not only requires much time but does not produce a matrix capable of withstanding many casting operations. To beat it in the matrix pulp must be moistened very much and the drying operation consequently takes a long time and must be carried through until the drying is completed, because otherwise the matrix would become too brittle. If the matrix is completely dried Application filed March 8, 1922. Serial No. 542,120.
in 'the air or in a drying oven it shrinks and produces indistinct and altered letters. If, on the other hand, the flong is calendered dry a quite sharp impression is not obtainable and sharp letters cannot be obtained therefrom. It has also been proposed to produce flongs from separate sheets of paper saturated with paste, by gumming the sheets to one another alternately with tissue paper to one another and then drying in the air.
It is clear that with such a process a great deal of time is required for the production of the-fiongs. Such flongs, moreover, are hard so that in dry impressing they adhere to the type while in use of such matrices in moist condition, the characters are pressed through, i.e., the separate layers of paper are cut so that in casting th liquid type metal penetrates between the separate layers.
Compared with such methods in the pres ent method the impression side of the matrix is rendered insensitive to the influence of heat. Moreover the flong is rendered flexible just at the moment the impression is taken and the means for rendering it flexible, namely the paste, is so distributed in the flong that it reaches the critical parts, that is the edges of the letters and the like. Thus a kind of cushion is formed which permits of obtaining a sharp impression which is retained on drying. In casting from such matrices the paste materials thus distributed form a rib, which acts as a stiffening and prevents the contraction of the matrix The whole of the process can be carried out in a very short interval of time, the application of the liquid to the impression side and the application of the paste to the rear only requiring a few movements of the hand and, the impression and drying being matters only of a few minutes. The matrix produced by this process can be used either at once or after an interval of time. More over, between the separate castings suitable intervals of time may elapse.
The process may be carried out as follows :-On the impression side of the fiong of pulp produced in the usual manner there is finally distributed by spraying or otherwise a liquid composed of 1 kg. water, 50 gr. ammonium-sulphate, 15 gr. borax, 20-gr. boric acid and 3-gr. carbolic acid. The rear side of the flong is then coated with matrix paste to which some dextrin has been added. On the coating thus formed is placed a sheet of unsized paper which may also be slightly coated on its adjacent surface with paste. The flong thus produced is placed with its impression side on the type and introduced into a press. The impression isproduced in this press, means for heating being provided so that the impression and dryingare effected at the same time. It is sufficieiit if the flong with the torme remains in the press for one or two minutes. After the removal from the press the matrix thus completed is quite ready for use.
Having now particularly described and, ascertained the nature of our said invention and in what manner the same is to be performedwe declare that what we claim is A method of producing stereotype impressions, consisting in treating the impression side of the flong, prepared in the usual manner, by spraying, painting or the like With liquid containing a heat-insulating medium,
(borax and ammonium-sulphate) and a termentatiompreveiiting medium, such as carbolic acid, and treating the flong on the rear side avith paste to which suitably a termentation-preventing medium is added, and applying to the paste layer a covering sheet of paper or like material which is impenetrable by the paste, whereupon the flong thus treated is placed in the torme and subjected to pressure in the press, and while the pressure is maintained is subjected to heating and a short drying operation of one or two minutes duration.
In testimony whereof I afiiX my signature in presence of two witnesses.
FRANZ WILHELM W IRTH.
Witnesses RICHARD IFFERTE, JOHANNA SCHAFER.
US542120A 1922-02-21 1922-03-08 Stereotype matrix Expired - Lifetime US1527384A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5078/22A GB197438A (en) 1922-02-21 1922-02-21 Method of producing stereotype matrices

Publications (1)

Publication Number Publication Date
US1527384A true US1527384A (en) 1925-02-24

Family

ID=9789329

Family Applications (1)

Application Number Title Priority Date Filing Date
US542120A Expired - Lifetime US1527384A (en) 1922-02-21 1922-03-08 Stereotype matrix

Country Status (3)

Country Link
US (1) US1527384A (en)
FR (1) FR549175A (en)
GB (1) GB197438A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3225687A (en) * 1963-06-10 1965-12-28 Fritschi Charles Method of making stereotype materices and backing sheet for use therein

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3225687A (en) * 1963-06-10 1965-12-28 Fritschi Charles Method of making stereotype materices and backing sheet for use therein

Also Published As

Publication number Publication date
GB197438A (en) 1923-05-17
FR549175A (en) 1923-02-03

Similar Documents

Publication Publication Date Title
US1527384A (en) Stereotype matrix
US1607267A (en) Method of and means for setting up and holding die and type forms
US962505A (en) Method of craping paper.
US1377510A (en) Matrix
US507485A (en) Matrix-board
US1173907A (en) Stereotype-matrix.
US565043A (en) Compound stencil-sheet
US1936183A (en) Method of treating wood
US3075260A (en) Stereotype mat
US1975286A (en) Process of manufacturing waterproof crepe-paper
US2112023A (en) Preparation of materials for embossing
US2265659A (en) Method of making decalcomania stamps
US2007566A (en) Art of printing
US1119498A (en) Material for building up printing-plates.
US799945A (en) Stereotype-matrix.
US1607189A (en) Manufacture and treatment of printing plates
US2339752A (en) Piano pin block
US1713151A (en) Method of producing transfer work
DE593907C (en) Process for the production of clichés by embossing easily softenable organic materials while heating
US1640679A (en) Method of printing designs
US1569296A (en) Method of and apparatus for use in printing
US2011248A (en) Printer's blanket
US1357344A (en) Method of making printing elements and matrices therefor
US427803A (en) Sylvania
US1990535A (en) Stencil sheet and method of making same