US683059A - Photographic-printing frame. - Google Patents

Photographic-printing frame. Download PDF

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Publication number
US683059A
US683059A US6038101A US1901060381A US683059A US 683059 A US683059 A US 683059A US 6038101 A US6038101 A US 6038101A US 1901060381 A US1901060381 A US 1901060381A US 683059 A US683059 A US 683059A
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US
United States
Prior art keywords
mat
glass plate
printing
photographic
frame
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
US6038101A
Inventor
Elton W Mccaslin
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.)
Morgan and Wright
Original Assignee
Morgan and Wright
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 Morgan and Wright filed Critical Morgan and Wright
Priority to US6038101A priority Critical patent/US683059A/en
Application granted granted Critical
Publication of US683059A publication Critical patent/US683059A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B27/00—Photographic printing apparatus
    • G03B27/02—Exposure apparatus for contact printing
    • G03B27/14—Details
    • G03B27/18—Maintaining or producing contact pressure between original and light-sensitive material
    • G03B27/20—Maintaining or producing contact pressure between original and light-sensitive material by using a vacuum or fluid pressure

Definitions

  • My invention relates to photographic-prin ting frames particularly adapted for the production of blue-prints and involving means for exhausting air between a mat and a glass plate, so as to cause the mat to smoothly and evenly clamp the drawing and printing-paper between the mat and the glass.
  • the object of my invention is to provide an improved construction of mat and to prevent leakage between the mat and the glass plate.
  • Figure 1 is a bottom view of a pneumatic-printin g frame involving my invention, means for exhausting the air being also illustrated.
  • Fig. 2 is a section taken transversely through Fig. 1.
  • Fig. 3 is a like view of the main frame.
  • Fig. 4 illustrates the glass plate, printing-paper, a drawing, a pad, and the mat in section.
  • Fig. 5 is a section through the clamping-frame.
  • Fig. 6 shows the pad in perspective, and
  • Fig. 7 is a like view of the mat.
  • the main frame A is provided with an inner ledge 1, against which the glass plate B is arranged to fit.
  • the printing-paper O and the drawing D are arranged between the glass plate and a mat E.
  • the mat E is made of rubber or equivalent rubber composition and is molded or otherwise formed with a marginal head or molding 2, having one or more continuous longitudinal channels 3, which provide it with elastic ribs 4, adapted and arranged to bear againstthe under side of the glass plate, and thereby hermetically seal the space between the glass plate and the portion of the mat which is bounded by its marginal head or molding.
  • head or molding provides the mat with a shallow space which is filled with some suitably porous pad F,such as felt or the like,which said pad provides a backing for the drawing and printing-paper.
  • a flexible tube G connects with an aperture through the mat and is also connected with a suitable exhaust-pump H, whereby air can be exhausted from between the mat and the glass plate.
  • the mat can be backed with a layer I of fabric, if desired, and the marginal portion of the mat is clamped against the glass plate by a clamp-frame K, which is forced against the mat by clamping devices L, consisting, for example, of swinging arms 5, pivoted to brackets 6 on the clampframe and arranged to be swung under the edge portions of plates 7 on the main frame, the said swinging arms being provided with set-screws 8, which can be tightened down upon the clamp-frame when the arms are under and in engagement with the plates 7 on the main frame.
  • clamping devices L consisting, for example, of swinging arms 5, pivoted to brackets 6 on the clampframe and arranged to be swung under the edge portions of plates 7 on the main frame, the said swinging arms being provided with set-screws 8, which can be tightened down upon the clamp-frame when the arms are under and in engagement with the plates 7 on the main frame.
  • a pneumatic-printing frame comprising a glass plate; a main frame; a rubber mat having its marginal portion provided with raised elastic ribs adapted to engage the glass plate; a pad arranged within the space which is surrounded by the raised ribs of the mat, and means for clamping such marginal portion of the mat against the glass plate.

Description

No. 683,059. Patented Supt. 24, 190i.
E. W. ICCASLIN.
PIIOTOGIIAPIIIB PRINTING FIIAIE.
(Applimfion am m 15, 1001. (III: Iodol.) 3 Shoots-Shut I.
we News runs co, momumoymlmmu. n. c.
No. 683,059. Patanted Sept. 24, I90I.
. E. W. MOCASLIN.
PHOTOGRAPH") PRINTING FRAIE.
A uuum filed an 15, 100;. (No Model.) 3 Sheets-Shoot 2.
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UNITED STATES PATENT OFFICE.
ELTON W. MCCASLIN, OF CHICAGO, ILLINOIS, ASSIGNOR TO MORGAN & WRIGHT, OF SAME PLACE.
PHOTOGRAPHlC-PRINTING FRAM E.
SPECIFICATION forming part of Letters Patent N 0. 683,059, dated September 24, 1901.
Application filed May 15, 1901. Serial No. 60,381. (No model.)
To all whom it may concern:
Be it known that I, ELTON W. MOCASLIN, a citizen of the United States, residing at Ohicago, in the county of Cook and State of Illinois, have invented a certain new and use ful Improvement in Photographic-Printing Frames, of which the following is a specification.
My invention relates to photographic-prin ting frames particularly adapted for the production of blue-prints and involving means for exhausting air between a mat and a glass plate, so as to cause the mat to smoothly and evenly clamp the drawing and printing-paper between the mat and the glass.
The object of my invention is to provide an improved construction of mat and to prevent leakage between the mat and the glass plate.
In the accompanying drawings, Figure 1 is a bottom view of a pneumatic-printin g frame involving my invention, means for exhausting the air being also illustrated. Fig. 2 is a section taken transversely through Fig. 1. Fig. 3 is a like view of the main frame. Fig. 4 illustrates the glass plate, printing-paper, a drawing, a pad, and the mat in section. Fig. 5 is a section through the clamping-frame. Fig. 6 shows the pad in perspective, and Fig. 7 is a like view of the mat.
The main frame A is provided with an inner ledge 1, against which the glass plate B is arranged to fit. For the purpose of making blue-prints the printing-paper O and the drawing D are arranged between the glass plate and a mat E. The mat E is made of rubber or equivalent rubber composition and is molded or otherwise formed with a marginal head or molding 2, having one or more continuous longitudinal channels 3, which provide it with elastic ribs 4, adapted and arranged to bear againstthe under side of the glass plate, and thereby hermetically seal the space between the glass plate and the portion of the mat which is bounded by its marginal head or molding. The arrangement of this,
head or molding provides the mat with a shallow space which is filled with some suitably porous pad F,such as felt or the like,which said pad provides a backing for the drawing and printing-paper. A flexible tube G connects with an aperture through the mat and is also connected with a suitable exhaust-pump H, whereby air can be exhausted from between the mat and the glass plate. The mat can be backed with a layer I of fabric, if desired, and the marginal portion of the mat is clamped against the glass plate by a clamp-frame K, which is forced against the mat by clamping devices L, consisting, for example, of swinging arms 5, pivoted to brackets 6 on the clampframe and arranged to be swung under the edge portions of plates 7 on the main frame, the said swinging arms being provided with set-screws 8, which can be tightened down upon the clamp-frame when the arms are under and in engagement with the plates 7 on the main frame. By thus tightening the setscrews against the clamp-frame the latter can be forced against the mat, and since the ribs of the molding or raised marginal portion of the mat engage the glass plate with a yielding spring resistance the space occupied by the pad, the drawing or copy, and the printing-paper will be hermetically sealed.
What I claim as my invention is- A pneumatic-printing frame comprising a glass plate; a main frame; a rubber mat having its marginal portion provided with raised elastic ribs adapted to engage the glass plate; a pad arranged within the space which is surrounded by the raised ribs of the mat, and means for clamping such marginal portion of the mat against the glass plate.
ELTON V. MCOASLIN.
Witnesses:
CHARLES G. PAGE, OTTILIE G. FREIBERG.
US6038101A 1901-05-15 1901-05-15 Photographic-printing frame. Expired - Lifetime US683059A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US6038101A US683059A (en) 1901-05-15 1901-05-15 Photographic-printing frame.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US6038101A US683059A (en) 1901-05-15 1901-05-15 Photographic-printing frame.

Publications (1)

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US683059A true US683059A (en) 1901-09-24

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2869448A (en) * 1957-02-18 1959-01-20 Roger F Bang Backing plate for a photolithographic chase
US2956769A (en) * 1958-11-12 1960-10-18 Fairchild Camera Instr Co Vacuum frame mat
US3099583A (en) * 1960-04-25 1963-07-30 Polymer Corp Device for masking and supporting an article
US4788778A (en) * 1987-06-30 1988-12-06 Bio-Rad Laboratories, Inc. Gel slab dryer with improved perimeter seal

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2869448A (en) * 1957-02-18 1959-01-20 Roger F Bang Backing plate for a photolithographic chase
US2956769A (en) * 1958-11-12 1960-10-18 Fairchild Camera Instr Co Vacuum frame mat
US3099583A (en) * 1960-04-25 1963-07-30 Polymer Corp Device for masking and supporting an article
US4788778A (en) * 1987-06-30 1988-12-06 Bio-Rad Laboratories, Inc. Gel slab dryer with improved perimeter seal

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