US3492943A - Non-returnable frame for stencil printing machine - Google Patents

Non-returnable frame for stencil printing machine Download PDF

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US3492943A
US3492943A US690323A US3492943DA US3492943A US 3492943 A US3492943 A US 3492943A US 690323 A US690323 A US 690323A US 3492943D A US3492943D A US 3492943DA US 3492943 A US3492943 A US 3492943A
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frame
returnable
printing machine
screen
members
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US690323A
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Henry L Miller
Frank C Strutz
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Miller Screen and Design Inc
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Miller Screen and Design Inc
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41FPRINTING MACHINES OR PRESSES
    • B41F15/00Screen printers
    • B41F15/14Details
    • B41F15/34Screens, Frames; Holders therefor
    • B41F15/36Screens, Frames; Holders therefor flat

Definitions

  • non-returnable frames for use in stencil-screen printing machines that, in comparison with those hitherto known, are substantially lighter in weight and considerably less costly to manufacture.
  • non-returnable frames are made of sheetmetal stampings that are suitably ribbed to provide adequate strength and assembled by spot welding.
  • This invention relates to non-returnable frames for use with stencil-screen printing machines.
  • non-returnable frames made of stampings of sheet steel, suitably ribbed to provide adequate strength and assembled by spot welding.
  • the new non-returnable frames are of four-piece construction, rather than the six-piece construction used in the prior art, and they may be assembled by using two welds, instead of six. They are sufficiently inexpensive, moreover, that they may be discarded when the screen member becomes worn, and this makes it possible to avoid the cost incident to handling and shipping.
  • FIGURE 1 is a plan view of a piece of sheet metal, with the outer lines of the pieces to be cut therefrom in order to make a non-returnable frame in accordance with the invention being indicated;
  • FIG. 2 is a perspective view of a frame member of a non-returnable frame in accordance with the present invention
  • FIG. 3 is a perspective view of a first tab member of a non-returnable frame in accordance with the present invention.
  • FIG. 4 is a perspective view of a second tab member of a non-returnable frame in accordance with the present invention.
  • FIG. 5 is a plan view of a frame in accordance with the present invention.
  • FIG. 6 is a plan view of a non-returnable frame in accordance with the present invention, with the screen inserted therein, so that the non-returnable frame assembly is ready to be inserted in a stencil-screen printing machine and used;
  • FIG. 7 is a perspective view of a portion of a side of a non-returnable frame in accordance with the present invention.
  • FIG. 8 is a view taken on the line VIII-VIII of FIG. 6.
  • FIG. 1 there is shown a piece 2 of sheet metal, from which there may be cut blanks 4, 6, 8 an 10.
  • Blank 4 is used in forming a first tab 36, having a shape as shown in FIG. 3.
  • the blank 4 is generally rectangular and it has a pair of openings 12 and 14, for purposes to be hereinafter described.
  • the blank 6 is also generally rectangular and has an opening 16 and a slot 18, for purposes hereinafter described.
  • the shape of the piece 42 formed from the blank 6 is shown in FIG. 4.
  • the blanks 8 and 10 comprise simple elongated rectangles. These are shaped into the form shown in FIG. 2. As will appear from FIG. 2, a blank 8, 10 comprises an elongated portion 20 to serve as the side of a non-returnable frame, and a pair of end portions 22 and 24 at right angles to the portion 20 and substantially shorter than it, to cooperate in forming the end portions of the nonreturnable frame.
  • the elongated portion 20 of the non-returnable frame is provided with ribbing or corrugation, to afford suitable strength. As there shown, this may be done by having the upper portion of the elongated portion 20 flared outwardly, as at 26, and having the lower portion of the elongated portion 20 flared generally outwardly as at 27 and then inwardly rather sharply as at 28.
  • blanks 8 and 10 are formed into parts that are mirror images of each other, rather than being identical. This holds true for the embodiment shown, but it is within the skill of the art to design identical stampings that may be assembled for the purposes of the invention.
  • the exact dimensions of the blanks 4, 6, 8 and 10 will depend, of course, upon the desired size of the non-returnable frame.
  • the invention will find use in making non-returnable frames about 1 /2 to 6 inches wide and about 5 to 15 inches long.
  • FIG. 5 a piece 31, made from the blank 8 and a piece 33, made from the blank 10, are brought together at their ends to form the generally rectangular outline of the non-returnable frame.
  • the downwardly extending portion 34 of the first tab 36 which is preferably located in such fashion that its horizontally extending portion 38 which contains the openings 12, 14 is in alignment with the tops of the members 31, 33.
  • first tab is joined to the ends of the members 31, 33 by one or more spot welds 40.
  • second tab means 42 is joined to the other ends of the members 31, 33, as by one or more spot welds 40. Again, it is desirable that the horizontally extending portion 46 of the second tab means 'be in alignment with the tops of the members 31, 33.
  • the non-returnable frame described above may be fitted withv a screen to prepare it for insertion in a stencil-screen printing machine.
  • a rubber gasket 50 seen in FIG. 8, which is secured to the pieces 31, 33 by suitable means.
  • Strip-like members 58, 60 of plastic or the like have one edge crimped into clip members 62, 64 and an opposite edge cemented or otherwise suitably joined to the sides of a screen 66.
  • holders 68, 70 each having openings therein for purposes hereinafter described.
  • the clip members 62, 64 are slipped over the tops of the members 31, 33.
  • the ends of the screen are then secured to the first and second tab means, using the openings 12 and 16 and upwardly extending bolts 71, 73, cooperating with suitable washers 75 and nuts 76. This yields an assembly prepared for shipment to the user of a stencil-screen printing machine, who will then insert an appropriate stencil and use the part in the manner well understood by those skilled in the art.
  • the opening 14 and the slot 18 provide for attachment of the part to a printing machine.
  • the slot 18 may be replaced with a simple round opening, but this is undesirable, as it does not provide for the use of the piece with printing machines having their studs, by means of differently spaced.
  • the non-returnable frame of the present invention is made of steel sheet or strip about 0.0359 to 0.0598 inch thick.
  • hot-rolled steel about 0.048 inch thick may be used.
  • a non-returnable frame for use with a stencilscreen printing machine, said frame comprising first and second body members each formed of steel sheet about 0.0359 to 0.0598 inch thick and having an elongated central portion adapted to serve as a side of a frame and end portions substantially at right angles thereto and each on the same side of said elongated central .portion, said elongated central portion being ribbed to increase substantially its strength, a first tab member having a generally horizontal portion and a generally vertical portion integral therewith, said generally vertical portion being joined to one of said end portions of said body members and they to each other, and a second tab member having a generally horizontal portion and a generally vertical portion integral therewith, said generally vertical portion being joined to the other of said end portions of said body members and they to each other.
  • a non-returnable frame assembly comprising, in combination, a frame as defined in claim 1, said first and second body members cooperating to form an opening, and a screen member coextensive with and covering said opening and secured to said frame as defined in claim 1.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Screen Printers (AREA)

Description

1970 H. 1.. MILLER ETAL 3,492,943
NON-RETURNABLE FRAME FOR STENCIL PRINTING MACHINE Filed Dec. 13, 1967 Plb. 1- ,2 I4 42 ,4 /Q 6, 48
IOJ
INVEN TORS. HENRY L. MILLER and FRANK c. sTRurz MW Qiumuf A r Iorneys United States Patent O M 3,492,943 NON-RETURNABLE FRAME FOR STENCIL PRINTING MACHINE Henry L. Miller, Pittsburgh, and Frank C. Strutz, Mars,
Pa., assignors to Miller Screen and Design, Inc., Mars,
Pa., a corporation of Pennsylvania Filed Dec. 13, 1967, Ser. No. 690,323 Int. Cl. B41f 15/34 U.S. Cl. 101-1271 2 Claims ABSTRACT OF THE DISCLOSURE This patent discloses non-returnable frames for use in stencil-screen printing machines that, in comparison with those hitherto known, are substantially lighter in weight and considerably less costly to manufacture. According to the invention, non-returnable frames are made of sheetmetal stampings that are suitably ribbed to provide adequate strength and assembled by spot welding.
BACKGROUND OF THE INVENTION Field of the invention This invention relates to non-returnable frames for use with stencil-screen printing machines.
Description of the prior art Prior to the instant invention, it has been customary to make screen frames for use in stencil-screen printing machines by welding together, to form a frame three pieces of angle iron and a generally rectangular piece of steel strip, and then Welding tab members to the horizontal upper flanges of the angle pieces forming the ends of the frame, with suitable openings being provided in the tab members and the flanges to which they are welded to permit securement'of the screen thereto and proper holding of the assembly comprising the frame and screen in the printing machine. Frames made in this manner are, of course, relatively costly to produce and ship. In the container-decorating industry, it has generally been the practice that when the screen member associated with the frame becomes worn, the entire assembly is returned to the machinery manufacturer, who removes the worn screen member and installs a replacement. To avoid machine downtime, the user of the machinery keeps on hand a suitable number of spare frame assemblies. Prior to the instant invention, those skilled in the art have not perceived that the cost, not only of the manufacture of the frames but also of the handling and shipping frame assemblies back and forth between the manufacturer and the user, could be overcome by making a non-returnable frame as herein disclosed.
SUMMARY OF THE INVENTION According to the invention, we provide non-returnable frames made of stampings of sheet steel, suitably ribbed to provide adequate strength and assembled by spot welding. The new non-returnable frames are of four-piece construction, rather than the six-piece construction used in the prior art, and they may be assembled by using two welds, instead of six. They are sufficiently inexpensive, moreover, that they may be discarded when the screen member becomes worn, and this makes it possible to avoid the cost incident to handling and shipping.
BRIEF DESCRIPTION OF THE DRAWINGS A complete understanding of the invention may be had from the foregoing and following description thereof, together with the appended drawings in which:
FIGURE 1 is a plan view of a piece of sheet metal, with the outer lines of the pieces to be cut therefrom in order to make a non-returnable frame in accordance with the invention being indicated;
FIG. 2 is a perspective view of a frame member of a non-returnable frame in accordance with the present invention;
FIG. 3 is a perspective view of a first tab member of a non-returnable frame in accordance with the present invention;
FIG. 4 is a perspective view of a second tab member of a non-returnable frame in accordance with the present invention;
FIG. 5 is a plan view of a frame in accordance with the present invention;
FIG. 6 is a plan view of a non-returnable frame in accordance with the present invention, with the screen inserted therein, so that the non-returnable frame assembly is ready to be inserted in a stencil-screen printing machine and used;
FIG. 7 is a perspective view of a portion of a side of a non-returnable frame in accordance with the present invention; and
FIG. 8 is a view taken on the line VIII-VIII of FIG. 6.
DESCRIPTION OF THE PREFERRED EMBODIMENTS In FIG. 1, there is shown a piece 2 of sheet metal, from which there may be cut blanks 4, 6, 8 an 10.
Blank 4 is used in forming a first tab 36, having a shape as shown in FIG. 3. The blank 4 is generally rectangular and it has a pair of openings 12 and 14, for purposes to be hereinafter described.
The blank 6 is also generally rectangular and has an opening 16 and a slot 18, for purposes hereinafter described. The shape of the piece 42 formed from the blank 6 is shown in FIG. 4.
The blanks 8 and 10 comprise simple elongated rectangles. These are shaped into the form shown in FIG. 2. As will appear from FIG. 2, a blank 8, 10 comprises an elongated portion 20 to serve as the side of a non-returnable frame, and a pair of end portions 22 and 24 at right angles to the portion 20 and substantially shorter than it, to cooperate in forming the end portions of the nonreturnable frame.
As shown in FIG. 7, the elongated portion 20 of the non-returnable frame is provided with ribbing or corrugation, to afford suitable strength. As there shown, this may be done by having the upper portion of the elongated portion 20 flared outwardly, as at 26, and having the lower portion of the elongated portion 20 flared generally outwardly as at 27 and then inwardly rather sharply as at 28.
As shown in FIG. 2, in the vicinity of the corners, where the elongated portion 20 joins the end portions 22 and 24, a single rather deep inward indentation 30 is provided.
It will 'be understood that the blanks 8 and 10 are formed into parts that are mirror images of each other, rather than being identical. This holds true for the embodiment shown, but it is within the skill of the art to design identical stampings that may be assembled for the purposes of the invention.
It will further be understood that the details of the machinery and process for producing the parts described above are familiar to those skilled in the art, so that description thereof is deemed unnecessary. The parts are, of course, both stamped out and shaped in a single operation, with the use of a suitable press and suitable dies.
The exact dimensions of the blanks 4, 6, 8 and 10 will depend, of course, upon the desired size of the non-returnable frame. The invention will find use in making non-returnable frames about 1 /2 to 6 inches wide and about 5 to 15 inches long.
' Having described above the individual parts, we shall now describe how they are assembled to form a nonreturnable frame in accordance with the invention, reference being had to FIG. 5. As there shown, a piece 31, made from the blank 8 and a piece 33, made from the blank 10, are brought together at their ends to form the generally rectangular outline of the non-returnable frame. To one end of the assembly there is joined the downwardly extending portion 34 of the first tab 36, which is preferably located in such fashion that its horizontally extending portion 38 which contains the openings 12, 14 is in alignment with the tops of the members 31, 33. The
which the non-returnable'frame is secured to the machine,
first tab is joined to the ends of the members 31, 33 by one or more spot welds 40. Similarly, the second tab means 42 is joined to the other ends of the members 31, 33, as by one or more spot welds 40. Again, it is desirable that the horizontally extending portion 46 of the second tab means 'be in alignment with the tops of the members 31, 33.
As shown in FIG. 6, the non-returnable frame described above may be fitted withv a screen to prepare it for insertion in a stencil-screen printing machine. Around the bottom of the pieces 31, 33, there is placed a rubber gasket 50, seen in FIG. 8, which is secured to the pieces 31, 33 by suitable means.
Strip- like members 58, 60 of plastic or the like have one edge crimped into clip members 62, 64 and an opposite edge cemented or otherwise suitably joined to the sides of a screen 66. At the ends of the screen 66, there are provided holders 68, 70, each having openings therein for purposes hereinafter described. The clip members 62, 64 are slipped over the tops of the members 31, 33. The ends of the screen are then secured to the first and second tab means, using the openings 12 and 16 and upwardly extending bolts 71, 73, cooperating with suitable washers 75 and nuts 76. This yields an assembly prepared for shipment to the user of a stencil-screen printing machine, who will then insert an appropriate stencil and use the part in the manner well understood by those skilled in the art. The opening 14 and the slot 18 provide for attachment of the part to a printing machine. The slot 18 may be replaced with a simple round opening, but this is undesirable, as it does not provide for the use of the piece with printing machines having their studs, by means of differently spaced.
The non-returnable frame of the present invention is made of steel sheet or strip about 0.0359 to 0.0598 inch thick. To be specific, hot-rolled steel about 0.048 inch thick may be used.
We claim as our invention:
1. A non-returnable frame for use with a stencilscreen printing machine, said frame comprising first and second body members each formed of steel sheet about 0.0359 to 0.0598 inch thick and having an elongated central portion adapted to serve as a side of a frame and end portions substantially at right angles thereto and each on the same side of said elongated central .portion, said elongated central portion being ribbed to increase substantially its strength, a first tab member having a generally horizontal portion and a generally vertical portion integral therewith, said generally vertical portion being joined to one of said end portions of said body members and they to each other, and a second tab member having a generally horizontal portion and a generally vertical portion integral therewith, said generally vertical portion being joined to the other of said end portions of said body members and they to each other.
2. A non-returnable frame assembly comprising, in combination, a frame as defined in claim 1, said first and second body members cooperating to form an opening, and a screen member coextensive with and covering said opening and secured to said frame as defined in claim 1.
References Cited UNITED STATES PATENTS 2,218,451 10/ 1940 Heyne 101--127.1 2,903,967 9/1959 Levin 101127.1 2,943,565 7/1960 Malek 10l127.1 3,169,475 2/1965 Caouette 10l-127.1 3,167,004 1/1965 Miller et al 101127.l
ROBERT E. PULFREY, Primary Examiner EUGENE H. EICKHOLT, Assistant Examiner US. Cl. X.R.
US690323A 1967-02-13 1967-12-13 Non-returnable frame for stencil printing machine Expired - Lifetime US3492943A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5518803A (en) * 1994-10-14 1996-05-21 Thomas; Rick E. Method for decorating mesh materials

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2218451A (en) * 1938-09-27 1940-10-15 Owens Illinois Glass Co Stencil screen construction
US2903967A (en) * 1957-08-06 1959-09-15 Colonial Process Supply Co Wire mesh screen
US2943565A (en) * 1953-05-21 1960-07-05 Jack H Malek Silk screen printing devices and method of manufacturing same
US3167004A (en) * 1963-05-28 1965-01-26 West Penn Screen Service Inc Stencil screen frame
US3169475A (en) * 1963-01-24 1965-02-16 Armand J Caouette Thin aluminum silk screen frame

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2218451A (en) * 1938-09-27 1940-10-15 Owens Illinois Glass Co Stencil screen construction
US2943565A (en) * 1953-05-21 1960-07-05 Jack H Malek Silk screen printing devices and method of manufacturing same
US2903967A (en) * 1957-08-06 1959-09-15 Colonial Process Supply Co Wire mesh screen
US3169475A (en) * 1963-01-24 1965-02-16 Armand J Caouette Thin aluminum silk screen frame
US3167004A (en) * 1963-05-28 1965-01-26 West Penn Screen Service Inc Stencil screen frame

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5518803A (en) * 1994-10-14 1996-05-21 Thomas; Rick E. Method for decorating mesh materials

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