US1294103A - Vacuum lifting device. - Google Patents

Vacuum lifting device. Download PDF

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Publication number
US1294103A
US1294103A US18146817A US18146817A US1294103A US 1294103 A US1294103 A US 1294103A US 18146817 A US18146817 A US 18146817A US 18146817 A US18146817 A US 18146817A US 1294103 A US1294103 A US 1294103A
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United States
Prior art keywords
diaphragm
plate
vacuum lifting
casing
spring
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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
US18146817A
Inventor
Halbert K Hitchcock
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.)
PPG Industries Inc
Original Assignee
Pittsburgh Plate Glass Co
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.)
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Publication date
Application filed by Pittsburgh Plate Glass Co filed Critical Pittsburgh Plate Glass Co
Priority to US18146817A priority Critical patent/US1294103A/en
Application granted granted Critical
Publication of US1294103A publication Critical patent/US1294103A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H3/00—Separating articles from piles
    • B65H3/46—Supplementary devices or measures to assist separation or prevent double feed
    • B65H3/48—Air blast acting on edges of, or under, articles
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T279/00—Chucks or sockets
    • Y10T279/11—Vacuum

Definitions

  • the invention relates to vacuum lifting or holding devices particularly designed for use in handling glass sheets but not limited to use in that relation. It has for its primary objects, the provision of an improved vacuum liftingcup, (1) which works independently of the other cups which are used with it and whose leakage will not affect the other cups,- (2) which has means for supporting the glass sheet inside the periphery of the block thus avoiding breakage incident to the air pressure, and (3) which is of simple durable construction and in which the wearing parts can be conveniently and cheaply replaced.
  • FIG. 1 is a vertical section through the device
  • Fig. 2 is a bottom plan view of the device of Fig. 1.
  • the device comprises a casing consisting of two parts 1 and 2 between which parts the diaphragm 3 of rubber or other suitable material is clamped, the halves of the casing being secured together by means of-the bolts 4;
  • the lower edge oflthe part 2 is provided with the engaging lip 5 of rubber (I or other suitable material clamped in posi-- tion by means of the annular ring 6 secured by the bolts 7
  • the lower portion of the casing 2 is also provided with a plate 8 having the perforations 9, 10, 11, 12, shown in plan view in Fig. 2. 3
  • the inner edge of the diaphragm 3 is clamped between the plate 13 and the ring 14:, such rin being held in position by means of the olts 15.
  • the plate 13 is also provided with a hollow stem 16 lying in the cylindrical portion 17 of the casing part 1.
  • This stem carries a cap 18 screw-threaded into the stem and provided with a bufler sprin 19 adapted to engage the screw'cap 20.
  • he diaphragm is normally held in the position illustrated, by means of the relatively strong coil spring 21, and a passage 22 is provided whereby air under pressure may be supplied to the chamber back of the diaphragm 3.
  • the plate 13 is provided withprojections adapted to fit down into the erforations 9,- 1 0, 1 1 and 12 when the diaphragm is forced into its: extreme forward position,
  • the plate 8 is advantageous in that it provides a support for the sheet of material which-is engaged This is particularly important where the sheet is relatively thin or fragile.
  • the soft surface 23 on the front face of the plate 13 avoids the danger of 'pressed against the surface of the sheet of breakage, such as might occur if the plate 8 were forced down sharply upon the sheet to be engaged. Since the vacuum is maintained by the spring each cup is independand engaging lip, may be easily replaced and at a relatively small cost, the main body air from the cup when such member is moved forward, fluid operated means for forcing the said member forward, and spring means for moving the said member to the rear.
  • a cup comprising an engaging lip and a diaphragm for expelling air from thecup when the diaphragm is moved forward, means for applying fluid pressure for moving the diaphragm forward, and spring means for movingthe diaphragm to the rear.
  • a cup comprising a metal casing provided with an engaging lip at its forward edge, a diaphragm which divides the easing into two chambers, means for applying air pressure in the chamber be hind the diaphragm to move it forward, and spring means normally holding the diaphragm in its rearmost position.
  • a cup comprising a metal casing provided with an engaging lip at its forward edge, a diaphragm which divides the easing into two chambers, means for applying air pressure in the chamber behind the diaphragm to move it forward, and a sprin also located in the chamber behind the diaphragmand adapted to move it to the rear.
  • a cup consisting of a twopart caslng, an engaging lip at the forward edge of one part of the casing, a diaphragm clamped at its edge between the parts of the casing and dividing it into two chambers, means for supplylng air pressure behind the diaphragm tomove it forward, and a spring for moving the diaphragm to the rear.
  • a cupconsisting of a twopart casmg an engaging lip at the forward edge of one'part of the casing, a diaphragm clamped at its edge between the parts of the casing and dividing it into two chambers, means for supplying air pressure behind the diaphragm to move it forward, and a spring for moving the diaphragm to the rear, the spring being located in the chamber behind the diaphragm.
  • a casing provided with a perforated plate at its front side and an engaging lip projecting forward of the plate, a movable member for expelling air through said plate when moved forwardly, spring means for moving said member to the rear, and means for applying fluid pressure to overcome 'thespring means and move said member forward.
  • a casing provided with a perforated plate at its front side and an engaging lip rojecting forward of the plate, a movabl e member for expelling air through said plate when moved forwardly, said' member being provided with means for fitting into the perforations in the plate, spring means for moving said member to the rear, and means for applying fluid pressure to overcome the spring means andmove said member forward.
  • a casing provided with a perforated plate at its front side and an engaging lip projecting forward of the plate, a diaphragm dividing the casing in two chambers and provided with projections for ffitting the perforations in said plate when the diaphragm is moved to forward position, spring means for moving the diaphragm' to the rear, and means for applying fluid pressure to the chamber to the rear of the diaphragm'to force it forward overcoming the spring means.
  • a casing provided with a perforated plate at its front side and an engaging lip projecting forward of the plate, a movable member for expelling air through said plate when moved forwardly,
  • said member being provided with means for fitting into the perforations in the plate, relatively yielding engaging means carried by the faces of said last mentioned means, spring means for moving said member to the rear, and means for applying fluid '0' sure to overcome the spring pressure and move said member forward.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)

Description

H. K. HITCHCOCK.
VACUUM LIFTING DEVICE.
APPLICATION FILED JULY 19, 1911.
2 SHEETS-SHEET I.
1% l\\\ Q l .3? 1e- WITNESS 7 INVENTOR.
ATTORNEYS.
H. K. HITCHCOCK.
VACUUM LIFTING DEVICE.
APPLICATION FILED LULY 19.19n.
1,294,108. Patent eb. 11, 1919.
2 SSHEET 2- WITNESS INVENTOR- ATTORNEYS.
HALBERT K. HITCHCOCK, OF PITTSBURGH, PENNSYLVANIA, ASSIGNOR TO PITTSBURGH PLATE GLASS COMPANY, A CORPORATION OF PENNSYLVANIA.
VACUUM LIFTING DEVICE.
Specification of Letters Patent. Patented Feb. 11, 1919.
Application filed July 19, 1917. Serial No. 181,468.
To all whom it may concern: I
Be it known that 1,;HALBEBT K. HITCH- COCK, a citizen of the United States, residing at Pittsburgh, in the county ofAllegheny and State of Pennsylvania, have'in vented certain new and useful Improvements in Vacuum Liftin Devices, of which the following is a speci cation.
. The invention relates to vacuum lifting or holding devices particularly designed for use in handling glass sheets but not limited to use in that relation. It has for its primary objects, the provision of an improved vacuum liftingcup, (1) which works independently of the other cups which are used with it and whose leakage will not affect the other cups,- (2) which has means for supporting the glass sheet inside the periphery of the block thus avoiding breakage incident to the air pressure, and (3) which is of simple durable construction and in which the wearing parts can be conveniently and cheaply replaced. One embodiment of the invention is illustrated in the accompanying drawings, wherein- Figure 1 is a vertical section through the device and Fig. 2 is a bottom plan view of the device of Fig. 1.
The device comprises a casing consisting of two parts 1 and 2 between which parts the diaphragm 3 of rubber or other suitable material is clamped, the halves of the casing being secured together by means of-the bolts 4; The lower edge oflthe part 2 is provided with the engaging lip 5 of rubber (I or other suitable material clamped in posi-- tion by means of the annular ring 6 secured by the bolts 7 The lower portion of the casing 2 is also provided with a plate 8 having the perforations 9, 10, 11, 12, shown in plan view in Fig. 2. 3
The inner edge of the diaphragm 3 is clamped between the plate 13 and the ring 14:, such rin being held in position by means of the olts 15. The plate 13 is also provided with a hollow stem 16 lying in the cylindrical portion 17 of the casing part 1. This stem carries a cap 18 screw-threaded into the stem and provided with a bufler sprin 19 adapted to engage the screw'cap 20. he diaphragm is normally held in the position illustrated, by means of the relatively strong coil spring 21, and a passage 22 is provided whereby air under pressure may be supplied to the chamber back of the diaphragm 3.
The plate 13 is provided withprojections adapted to fit down into the erforations 9,- 1 0, 1 1 and 12 when the diaphragm is forced into its: extreme forward position,
and the lower face of the plate is provided with a sheet 23 of relatively soft material which lies in front of the plate 8 when the diaphragm is in its extreme forward position.
In operation air is applied to the passage 22 caus1ng the diaphragm to move forward prior to the application of the engaging lip 5 to the sheet of material to be engaged,
such forward movement-of the diaphragm expelling the air from the cup on the front side of the diaphragm. The lip 5 is then glass or other material which is to be engaged, and the air pressure released from the passage 22 permitting the spring 21 to expand and carry the diaphragm to its rearmost position, as indicated in Fig. 1'. This produces a relatively high vacuum to the front of the diaphragm and gives a secure attacgment of the cup to the surface engage The provision of the perforated plate 8 with the corresponding projections on the plate 13 permits substantially all the air to be expelled from the interior of the cup on the forward movement of the diaphragm,
and the plate 8 is advantageous in that it provides a support for the sheet of material which-is engaged This is particularly important where the sheet is relatively thin or fragile. The soft surface 23 on the front face of the plate 13 avoids the danger of 'pressed against the surface of the sheet of breakage, such as might occur if the plate 8 were forced down sharply upon the sheet to be engaged. Since the vacuum is maintained by the spring each cup is independand engaging lip, may be easily replaced and at a relatively small cost, the main body air from the cup when such member is moved forward, fluid operated means for forcing the said member forward, and spring means for moving the said member to the rear.
2. In combination in a vacuum lifting or holding device, a cup comprising an engaging lip and a diaphragm for expelling air from thecup when the diaphragm is moved forward, means for applying fluid pressure for moving the diaphragm forward, and spring means for movingthe diaphragm to the rear. r
3. In combination in a vacuum lifting or holding device, a cup comprising a metal casing provided with an engaging lip at its forward edge, a diaphragm which divides the easing into two chambers, means for applying air pressure in the chamber be hind the diaphragm to move it forward, and spring means normally holding the diaphragm in its rearmost position.
4. In combination in a vacuum lifting or holding device, a cup comprising a metal casing provided with an engaging lip at its forward edge, a diaphragm which divides the easing into two chambers, means for applying air pressure in the chamber behind the diaphragm to move it forward, and a sprin also located in the chamber behind the diaphragmand adapted to move it to the rear.
5. In combination in a vacuum lifting or holdingdevice, a cup consisting of a twopart caslng, an engaging lip at the forward edge of one part of the casing, a diaphragm clamped at its edge between the parts of the casing and dividing it into two chambers, means for supplylng air pressure behind the diaphragm tomove it forward, and a spring for moving the diaphragm to the rear.
6. In combination in a vacuum lifting or holding device, a cupconsisting of a twopart casmg, an engaging lip at the forward edge of one'part of the casing, a diaphragm clamped at its edge between the parts of the casing and dividing it into two chambers, means for supplying air pressure behind the diaphragm to move it forward, and a spring for moving the diaphragm to the rear, the spring being located in the chamber behind the diaphragm.
7. In combination in a vacuum lifting or holding device, a casing provided with a perforated plate at its front side and an engaging lip projecting forward of the plate, a movable member for expelling air through said plate when moved forwardly, spring means for moving said member to the rear, and means for applying fluid pressure to overcome 'thespring means and move said member forward.
8. In combination in a vacuum lifting or holding device,.a casing provided with a perforated plate at its front side and an engaging lip rojecting forward of the plate, a movabl e member for expelling air through said plate when moved forwardly, said' member being provided with means for fitting into the perforations in the plate, spring means for moving said member to the rear, and means for applying fluid pressure to overcome the spring means andmove said member forward.
9. In combination in a vacuum lifting or holding device, a casing provided with a perforated plate at its front side and an engaging lip projecting forward of the plate, a diaphragm dividing the casing in two chambers and provided with projections for ffitting the perforations in said plate when the diaphragm is moved to forward position, spring means for moving the diaphragm' to the rear, and means for applying fluid pressure to the chamber to the rear of the diaphragm'to force it forward overcoming the spring means.
- 10. In combination in a vacuum lifting or holding device, a casing provided with a perforated plate at its front side and an engaging lip projecting forward of the plate, a movable member for expelling air through said plate when moved forwardly,
said member being provided with means for fitting into the perforations in the plate, relatively yielding engaging means carried by the faces of said last mentioned means, spring means for moving said member to the rear, and means for applying fluid '0' sure to overcome the spring pressure and move said member forward.
HALBERT K. HITOHOOOK.
US18146817A 1917-07-19 1917-07-19 Vacuum lifting device. Expired - Lifetime US1294103A (en)

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Cited By (34)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2443987A (en) * 1945-10-13 1948-06-22 O H Calhoun Work holder
US2469817A (en) * 1944-09-22 1949-05-10 Eriksson Erik Otto Suction chuck
US2529331A (en) * 1947-11-14 1950-11-07 Ellis Arthur Godfrey Chuck
US2688220A (en) * 1952-04-16 1954-09-07 Eastman Kodak Co Means of chucking thin edge lenses
US2815240A (en) * 1955-02-11 1957-12-03 Vac U Lift Company Suction pads with floating sealing ring
DE1045766B (en) * 1956-05-02 1958-12-04 Albert Fezer Suction plate for clamping thin-walled workpieces, especially thin sheets
US3005652A (en) * 1960-12-14 1961-10-24 Bemis Bro Bag Co Vacuum gripping device
US3058721A (en) * 1958-11-17 1962-10-16 Dunlop Rubber Co Device for transmitting or retaining vacuum or negative pressure conditions
DE1155729B (en) * 1957-07-02 1963-10-10 Winkler Fallert & Co Maschf Suction clamping device for holding hollow bodies or similar objects
US3147872A (en) * 1960-10-24 1964-09-08 Hyster Co Suction apparatus for picking up various shaped articles, especially paper rolls
US3152828A (en) * 1962-02-02 1964-10-13 Alvey Conveyor Mfg Co Vacuum cup units for lifting pads
US3158381A (en) * 1962-03-05 1964-11-24 Amagasaki Kosakusho Kk Vacuum chuck
US3227299A (en) * 1963-02-20 1966-01-04 Elwell Parker Electric Co Mechanical and vacuum operated roll handling apparatus
US3322221A (en) * 1964-10-24 1967-05-30 Hasenclever A G Maschf Pneumatic lifting device and weigher for flat goods
US3461838A (en) * 1965-05-07 1969-08-19 Eagle Picher Ind Inc Vacuum work support
US3501138A (en) * 1967-08-30 1970-03-17 Fmc Corp Sheet dispenser
US3704038A (en) * 1970-07-15 1972-11-28 Eckert Paul Negative pressure lift device
US3785691A (en) * 1972-08-07 1974-01-15 American Chain & Cable Co Automatic lifting device
US3923177A (en) * 1973-06-21 1975-12-02 Little Giant Products Inc Vacuum lift apparatus with a control valve assembly
US3957296A (en) * 1975-05-05 1976-05-18 The United States Of America As Represented By The Secretary Of The Navy Vacuum multiplier
US3970341A (en) * 1973-12-05 1976-07-20 Vacu-Lift Machinenbau Gmbh Vacuum lifting unit including a suction cup
US4320580A (en) * 1980-09-03 1982-03-23 The United States Of America As Represented By The United States Department Of Energy Method and device for determining the position of a cutting tool relative to the rotational axis of a spindle-mounted workpiece
US4470585A (en) * 1981-04-14 1984-09-11 Z. Bavelloni S.P.A. Holding device for glass panes, marble slabs, and like bodies
US6527323B2 (en) * 2000-07-31 2003-03-04 Smc Kabushiki Kaisha Suction pad having a patterned attracting surface
US20030062735A1 (en) * 2001-09-28 2003-04-03 Pabst William V. Two way non leaking flow valve with full-open capability
EP1382559A1 (en) * 2002-07-19 2004-01-21 Villeroy & Boch AG Handling apparatus with suction cups
US20100066108A1 (en) * 2008-09-05 2010-03-18 Heinrich Ostendarp Vacuum lifting tool
US20100219651A1 (en) * 2009-02-27 2010-09-02 Custom Concrete Creations Vacuum lifting device and method of use
US9586793B2 (en) 2015-02-09 2017-03-07 Michael Prindiville Multi-port vacuum lifting attachment with remote controlling release
EP3133035A4 (en) * 2013-05-24 2018-03-21 VTEC Co. Ltd. Separable pad-type adsorption cup
USD932726S1 (en) 2020-12-01 2021-10-05 Nemo Power Tools Ltd. Vacuum gripper
USD933927S1 (en) 2018-05-08 2021-10-19 Nemo Power Tools Ltd. Vacuum gripper
USD934524S1 (en) 2018-05-08 2021-10-26 Nimrod Rotem Vacuum gripper
USD1012413S1 (en) 2021-05-20 2024-01-23 Bohle Ag Suction lifter

Cited By (36)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2469817A (en) * 1944-09-22 1949-05-10 Eriksson Erik Otto Suction chuck
US2443987A (en) * 1945-10-13 1948-06-22 O H Calhoun Work holder
US2529331A (en) * 1947-11-14 1950-11-07 Ellis Arthur Godfrey Chuck
US2688220A (en) * 1952-04-16 1954-09-07 Eastman Kodak Co Means of chucking thin edge lenses
US2815240A (en) * 1955-02-11 1957-12-03 Vac U Lift Company Suction pads with floating sealing ring
DE1045766B (en) * 1956-05-02 1958-12-04 Albert Fezer Suction plate for clamping thin-walled workpieces, especially thin sheets
DE1155729B (en) * 1957-07-02 1963-10-10 Winkler Fallert & Co Maschf Suction clamping device for holding hollow bodies or similar objects
US3058721A (en) * 1958-11-17 1962-10-16 Dunlop Rubber Co Device for transmitting or retaining vacuum or negative pressure conditions
US3147872A (en) * 1960-10-24 1964-09-08 Hyster Co Suction apparatus for picking up various shaped articles, especially paper rolls
US3005652A (en) * 1960-12-14 1961-10-24 Bemis Bro Bag Co Vacuum gripping device
US3152828A (en) * 1962-02-02 1964-10-13 Alvey Conveyor Mfg Co Vacuum cup units for lifting pads
US3158381A (en) * 1962-03-05 1964-11-24 Amagasaki Kosakusho Kk Vacuum chuck
US3227299A (en) * 1963-02-20 1966-01-04 Elwell Parker Electric Co Mechanical and vacuum operated roll handling apparatus
US3322221A (en) * 1964-10-24 1967-05-30 Hasenclever A G Maschf Pneumatic lifting device and weigher for flat goods
US3461838A (en) * 1965-05-07 1969-08-19 Eagle Picher Ind Inc Vacuum work support
US3501138A (en) * 1967-08-30 1970-03-17 Fmc Corp Sheet dispenser
US3704038A (en) * 1970-07-15 1972-11-28 Eckert Paul Negative pressure lift device
US3785691A (en) * 1972-08-07 1974-01-15 American Chain & Cable Co Automatic lifting device
US3923177A (en) * 1973-06-21 1975-12-02 Little Giant Products Inc Vacuum lift apparatus with a control valve assembly
US3970341A (en) * 1973-12-05 1976-07-20 Vacu-Lift Machinenbau Gmbh Vacuum lifting unit including a suction cup
US3957296A (en) * 1975-05-05 1976-05-18 The United States Of America As Represented By The Secretary Of The Navy Vacuum multiplier
US4320580A (en) * 1980-09-03 1982-03-23 The United States Of America As Represented By The United States Department Of Energy Method and device for determining the position of a cutting tool relative to the rotational axis of a spindle-mounted workpiece
US4470585A (en) * 1981-04-14 1984-09-11 Z. Bavelloni S.P.A. Holding device for glass panes, marble slabs, and like bodies
US6527323B2 (en) * 2000-07-31 2003-03-04 Smc Kabushiki Kaisha Suction pad having a patterned attracting surface
US20030062735A1 (en) * 2001-09-28 2003-04-03 Pabst William V. Two way non leaking flow valve with full-open capability
US7374217B2 (en) * 2001-09-28 2008-05-20 Parker-Hannifin Corporation Two way non leaking flow valve with full-open capability
EP1382559A1 (en) * 2002-07-19 2004-01-21 Villeroy & Boch AG Handling apparatus with suction cups
US20100066108A1 (en) * 2008-09-05 2010-03-18 Heinrich Ostendarp Vacuum lifting tool
US8500181B2 (en) * 2008-09-05 2013-08-06 Bohle Ag Vacuum lifting tool
US20100219651A1 (en) * 2009-02-27 2010-09-02 Custom Concrete Creations Vacuum lifting device and method of use
EP3133035A4 (en) * 2013-05-24 2018-03-21 VTEC Co. Ltd. Separable pad-type adsorption cup
US9586793B2 (en) 2015-02-09 2017-03-07 Michael Prindiville Multi-port vacuum lifting attachment with remote controlling release
USD933927S1 (en) 2018-05-08 2021-10-19 Nemo Power Tools Ltd. Vacuum gripper
USD934524S1 (en) 2018-05-08 2021-10-26 Nimrod Rotem Vacuum gripper
USD932726S1 (en) 2020-12-01 2021-10-05 Nemo Power Tools Ltd. Vacuum gripper
USD1012413S1 (en) 2021-05-20 2024-01-23 Bohle Ag Suction lifter

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