US2922645A - Sheet material lifting mechanism - Google Patents

Sheet material lifting mechanism Download PDF

Info

Publication number
US2922645A
US2922645A US630400A US63040056A US2922645A US 2922645 A US2922645 A US 2922645A US 630400 A US630400 A US 630400A US 63040056 A US63040056 A US 63040056A US 2922645 A US2922645 A US 2922645A
Authority
US
United States
Prior art keywords
belt
sheet material
lifting mechanism
tabs
material lifting
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
US630400A
Inventor
Gordon K Hurlbut
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.)
GAF Chemicals Corp
Original Assignee
General Aniline and Film Corp
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 General Aniline and Film Corp filed Critical General Aniline and Film Corp
Priority to US630400A priority Critical patent/US2922645A/en
Application granted granted Critical
Publication of US2922645A publication Critical patent/US2922645A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • 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
    • G03B27/32—Projection printing apparatus, e.g. enlarger, copying camera
    • G03B27/52—Details
    • G03B27/62—Holders for the original
    • G03B27/6207—Holders for the original in copying cameras
    • G03B27/625—Apparatus which relate to the handling of originals, e.g. presence detectors, inverters
    • 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
    • G03B27/22—Maintaining or producing contact pressure between original and light-sensitive material by stretching over a curved surface

Definitions

  • the present invention has for its primary object the provision of simple lifting means which will become automatically effective when the conveyor belt reaches a certain position in the conveying system.
  • a particular feature of the invention is that the lifting means are inherently part of the conveyor belt and require no auxiliary apparatus for effective operation.
  • Fig. 1 is a perspective view of a simple conveying belt stretched between rollers;
  • Fig. 2 is a sectional view thereof along lines A-A of Fig. 1.
  • U-shaped tabs 4 are formed in the belt surface 5 either by lancing through the complete thickness of the belt or only partly through one or more of the outside laminations.
  • the U-shaped tabs 4 are staggered across the Width of the belt 5, the legs of the U being parallel to the sides "Ice of the belt, with the open ends of the U-shaped form being in the direction of rotation of the rollers 6 and 7 between which the belt 5 is stretched.
  • the rollers may run in bearings attached to the side walls, of which side wall 8 is shown by way of example.
  • a guide member 9 attached by means of a. suitable bracket 10 to the wall 8.
  • the guide member 9 has a curved surface and is provided with suitable openings 11 to permit the tabs 4 to pass through as the belt 5 follows the curvature of the roller 6.
  • the tabs 4 When the belt 5 is stretched between rollers 6 and 7 the tabs 4 normally assume a flat position. However, as the belt 5 is moved over the roller 6, the tabs 4 assume a tangential position to the curved surface of the roller. In this manner the edge of the sheet material 12 is lifted and carried by means of the raised tabs 4 to permit the guide member 9 to support the paper and guide it into proper direction so that it may be deposited onto a tray or any suitable sheet collecting device.
  • a sheet material conveying apparatus utilizing a flexible conveyor belt stretched between rollers, said material having the tendency to adhere to the surface of said belt, means for lifting said material from said belt comprising a plurality of tabs cut into said belt and facing in the direction opposite to the movement thereof, said tabs lying normally in the plane of the belt and, upon circumferential movement of said belt over said roller, being constrained to assume a tangential position to said roller whereby said sheet material is lifted from said conveyor belt.
  • said member having a plurality of openings for the passage of said tabs.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Delivering By Means Of Belts And Rollers (AREA)

Description

Jan. 26, 1960 G. K. HURLBUT 2,922,645
SHEET MATERIAL LIFTING MECHANISM Filed Dec. 24, 1956 FIG! FIG.2
INVENTOR. GORDON K. HURLBUT fimw United 2,922,645 SHEET MATERIAL LIFTING MECHANISM Gordon K. Hurlbut, Chenango Bridge, N.Y., assignor to General Aniline & Film Corporation, New York, N.Y., a corporation of Delaware Application December 24, 1956, Serial No. 630,400
3 Claims. (Cl. 271-45) is conveyed, for example, sensitized paper in diazotype reproduction machines, difliculty may be encountered in separating the sheet material from the belt surface. Heat, moisture, or other factors produce a tendency of the paper to adhere to the surface of the conveyor belt.
Various means have been proposed for separating the paper from the belt, such as pick-off fingers or suction means. The former require close contact with the conveyor belt and may injure the surface thereof, and suction devices are costly and bulky in nature.
The present invention has for its primary object the provision of simple lifting means which will become automatically effective when the conveyor belt reaches a certain position in the conveying system.
A particular feature of the invention is that the lifting means are inherently part of the conveyor belt and require no auxiliary apparatus for effective operation.
Other objects and features will become apparent from the following description of the invention, pointed out in particularity in the appended claims and taken in connection with the accompanying drawing, in which:
Fig. 1 is a perspective view of a simple conveying belt stretched between rollers; and
Fig. 2 is a sectional view thereof along lines A-A of Fig. 1.
Referring to the drawing, it is seen that in accordance with the invention U-shaped tabs 4 are formed in the belt surface 5 either by lancing through the complete thickness of the belt or only partly through one or more of the outside laminations.
The U-shaped tabs 4 are staggered across the Width of the belt 5, the legs of the U being parallel to the sides "Ice of the belt, with the open ends of the U-shaped form being in the direction of rotation of the rollers 6 and 7 between which the belt 5 is stretched. The rollers may run in bearings attached to the side walls, of which side wall 8 is shown by way of example. Alongside of roller 6 is provided a guide member 9 attached by means of a. suitable bracket 10 to the wall 8. The guide member 9 has a curved surface and is provided with suitable openings 11 to permit the tabs 4 to pass through as the belt 5 follows the curvature of the roller 6.
When the belt 5 is stretched between rollers 6 and 7 the tabs 4 normally assume a flat position. However, as the belt 5 is moved over the roller 6, the tabs 4 assume a tangential position to the curved surface of the roller. In this manner the edge of the sheet material 12 is lifted and carried by means of the raised tabs 4 to permit the guide member 9 to support the paper and guide it into proper direction so that it may be deposited onto a tray or any suitable sheet collecting device.
While one embodiment of the invention has been disclosed, it is to be understood that the inventive concept may be carried out in a number of ways. This application, therefore, is not to be limited to the precise details described, but is intended to cover all variations and modifications thereof falling within the spirit of the invention and the scope of the claims.
I claim:
1. In a sheet material conveying apparatus utilizing a flexible conveyor belt stretched between rollers, said material having the tendency to adhere to the surface of said belt, means for lifting said material from said belt comprising a plurality of tabs cut into said belt and facing in the direction opposite to the movement thereof, said tabs lying normally in the plane of the belt and, upon circumferential movement of said belt over said roller, being constrained to assume a tangential position to said roller whereby said sheet material is lifted from said conveyor belt.
2. An apparatus in accordance with claim 1 wherein said tabs are formed of U-shaped cuts in the belt.
3. An apparatus in accordance with claim 1 wherein a guide member is placed alongside said roller for guiding said sheet material upon being lifted from said belt,
.said member having a plurality of openings for the passage of said tabs.
References Cited in the file of this patent FOREIGN PATENTS 304,461 Great Britain Jan. 9, 1930
US630400A 1956-12-24 1956-12-24 Sheet material lifting mechanism Expired - Lifetime US2922645A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US630400A US2922645A (en) 1956-12-24 1956-12-24 Sheet material lifting mechanism

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US630400A US2922645A (en) 1956-12-24 1956-12-24 Sheet material lifting mechanism

Publications (1)

Publication Number Publication Date
US2922645A true US2922645A (en) 1960-01-26

Family

ID=24527021

Family Applications (1)

Application Number Title Priority Date Filing Date
US630400A Expired - Lifetime US2922645A (en) 1956-12-24 1956-12-24 Sheet material lifting mechanism

Country Status (1)

Country Link
US (1) US2922645A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3198308A (en) * 1962-05-24 1965-08-03 Gen Electric Conveyor snatcher
US3209911A (en) * 1962-06-13 1965-10-05 Speno International Separating conveyor
US3904021A (en) * 1973-11-07 1975-09-09 Ardac Inc Receptacle for conveying coins
US3939965A (en) * 1973-04-17 1976-02-24 Conrad Scholtz Ag Conveyor belt
US4487645A (en) * 1983-07-18 1984-12-11 Weston Colin K Sheet carrier for tractor-feed printers
US5240368A (en) * 1989-12-04 1993-08-31 Diebold, Inc. Sheet handling apparatus

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB304461A (en) * 1928-01-13 1929-01-24 Henry Shilleto Horsman Drums for high pressure boilers

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB304461A (en) * 1928-01-13 1929-01-24 Henry Shilleto Horsman Drums for high pressure boilers

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3198308A (en) * 1962-05-24 1965-08-03 Gen Electric Conveyor snatcher
US3209911A (en) * 1962-06-13 1965-10-05 Speno International Separating conveyor
US3939965A (en) * 1973-04-17 1976-02-24 Conrad Scholtz Ag Conveyor belt
US3904021A (en) * 1973-11-07 1975-09-09 Ardac Inc Receptacle for conveying coins
US4487645A (en) * 1983-07-18 1984-12-11 Weston Colin K Sheet carrier for tractor-feed printers
US5240368A (en) * 1989-12-04 1993-08-31 Diebold, Inc. Sheet handling apparatus
US5342165A (en) * 1989-12-04 1994-08-30 Diebold, Incorporated Sheet handling apparatus

Similar Documents

Publication Publication Date Title
EP0070051B1 (en) Method and apparatus for conveying and spreading material
US2822170A (en) Separator and conveyor means for light printing machines
US4411420A (en) Conveyor apparatus for the transportation of plates, strips or sheets of material on continuous belts
US3126201A (en) Stripping device
GB1021847A (en) Method and apparatus for conveying sheets of heat-softenable material, such as glass
JPS5952812B2 (en) Document transport method in automatic document feeder for copying machines
US5037079A (en) Vacuum platen transport plenum vacuum shutter
US2922645A (en) Sheet material lifting mechanism
US2995364A (en) Item feeding and aligning apparatus
GB1465239A (en) Conveying systems for example in graphic arts apparatus
GB1433363A (en) Apparatus for handling photographic strip material
ES462340A1 (en) Method and apparatus for conveying sheets of corrugated cardboard or similar material through a processing machine
SE338500B (en)
US2533184A (en) Sheet material delivery means
US2478850A (en) Print stacking means for printing machines
US3856132A (en) Apparatus for conveying sheet materials
ATE108411T1 (en) DEVICE FOR CHANGING THE SPEED OF TRANSPORTED SHEETS WHILE MAINTAINING THE REGISTER.
JPS5930606B2 (en) Sheet conveyance device
US4315621A (en) Sheet collating deflector
US3947020A (en) Device for automatically separating a photosensitive sheet from an original for copying apparatus
US4793073A (en) Device for removing moisture from wet processed photosensitive material
US2878741A (en) Means for moistening the films of photographic film-supports
US3012492A (en) Apparatus for developing sensitized material
US2457753A (en) Conveying means for dry printing machines
GB715718A (en) Photographic contact printing machines