GB1577158A - Apparatus for changing a flow of envelopes in spaced apart succession into a slower flow of envelopes in overlapping succession - Google Patents

Apparatus for changing a flow of envelopes in spaced apart succession into a slower flow of envelopes in overlapping succession Download PDF

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Publication number
GB1577158A
GB1577158A GB45687/77A GB4568777A GB1577158A GB 1577158 A GB1577158 A GB 1577158A GB 45687/77 A GB45687/77 A GB 45687/77A GB 4568777 A GB4568777 A GB 4568777A GB 1577158 A GB1577158 A GB 1577158A
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United Kingdom
Prior art keywords
envelopes
succession
belt
conveyor
envelope
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
Application number
GB45687/77A
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.)
CARLAW Ltd D
Original Assignee
CARLAW Ltd D
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 CARLAW Ltd D filed Critical CARLAW Ltd D
Priority to GB45687/77A priority Critical patent/GB1577158A/en
Publication of GB1577158A publication Critical patent/GB1577158A/en
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
    • B65H29/66—Advancing articles in overlapping streams
    • B65H29/6609—Advancing articles in overlapping streams forming an overlapping stream
    • B65H29/6618—Advancing articles in overlapping streams forming an overlapping stream upon transfer from a first conveyor to a second conveyor advancing at slower speed
    • B65H29/6636—Advancing articles in overlapping streams forming an overlapping stream upon transfer from a first conveyor to a second conveyor advancing at slower speed in combination with auxiliary means for underlapping articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
    • B65H29/24—Delivering or advancing articles from machines; Advancing articles to or into piles by air blast or suction apparatus
    • B65H29/241—Suction devices
    • B65H29/242—Suction bands or belts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2150/00—Flexible containers made from sheets or blanks, e.g. from flattened tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2160/00—Shape of flexible containers
    • B31B2160/10—Shape of flexible containers rectangular and flat, i.e. without structural provision for thickness of contents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B70/00—Making flexible containers, e.g. envelopes or bags
    • B31B70/74—Auxiliary operations
    • B31B70/92—Delivering
    • B31B70/94—Delivering singly or in succession
    • B31B70/96—Delivering singly or in succession in an overlapping arrangement

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Making Paper Articles (AREA)

Description

(54) APPARATUS FOR CHANGING A FLOW OF ENVELOPES IN SPACED APART SUCCESSION INTO A SLOWER-FLOW OF ENVELOPES IN OVERLAPPING SUCCESSION (71) We, DAVID CARLAW (ENGINEERS) LIMITED a British Company of 31 Finnieston Street, Glasgow C3, do hereby declare the invention, for which we pray that a patent may be granted to us, and the method by which it is to be performed, to be particularly described in and by the following statement: This invention relates to apparatus for changing a flow of envelopes in spaced apart succession into a slower flow of envelopes in overlapping succession.
The invention has particular application in an envelope making machine wherein envelopes pass in spaced apart succession through a station where gum is applied to open closure flaps of the envelopes and thereafter the. envelopes pass at a slower speed in overlapping succession through a drying zone for drying the gum on the open closure flaps, the purpose being to minimise the length of the drying zone without reducing the throughput of the machine.
According to this invention there is provided apparatus for changing a flow of envelopes in spaced apart succession into a slower flow of envelopes in overlapping succession, the apparatus comprising an endless perforated belt conveyor having an upper operative run; vacuum chamber means underlying the operative run of the conveyor, with upper openings in the path of the perforations in the conveyor, whereby envelopes introduced in spaced apart succesion to the operative run of the conveyor can be held by suction to the operative run of the conveyor and moved with the conveyor, means beyond the downstream end of the operative run of the conveyor for retarding the envelopes as they leave the conveyor, and means under the operative run of the conveyor for intermittently delivering. a blast of air upwards to lift the trailing portion of each retarded envelope and permit the leading edge of a following envelope moving with the conveyor, to pass under the trailing portion of the retarded envelope and thereby change the spaced apart succesion of envelopes into an overlapping succession.
Embodiments of the invention will now be described, by way of example, with reference to the accompanying drawings, in which: Fig. 1 is a diagrammatic isometric representation of one embodiment of the invention; Fig. 2 is a diagrammatic side view of the same embodiment; Fig. 3 is a representation, similar to Fig.
1, of a second embodiment of the inven- tion; Fig; 4 is similar to Fig. 3 but merely showing conveyor belts; Fig. 5 is a diagrammatic side view of the second embodiment; Figs. 6 to 8 show various stages in the progress of the envelopes; and Fig. 9 is a view of a fragment of a modified version of the embodiment shown in Fig. 3.
Referring to Figs. 1 and 2, two endless belts 1 and 2 run in parallel spaced apart relation over driving pulleys 3 and 4. The belts 1 and 2 are continuously perforated at 5 and pass over vacuum chambers 6, 7, 8, 9, 10 and 11 respectively connected to indiidual ports 12, 13, 14, 15, 16 and 17 of a valve 18 having another port 19 connected to a vacuum source (not shown).
The valve 18 has a rotary valve member mounted on a shaft carrying the driving pulleys 3 so that when the rotary valve member is rotated the vacuum chambers 6, 7, 8, 9, 10 and 11 are successively connected to the vacuum source. Adjacent to the pulleys 4 and downstream of the operative run of the belts 1 and 2 are driving rollers 20 which rotate at such a speed that the peripheral velocity of the rollers 20 is considerably less than the speed of the belts 1 and 2. Idler rollers 21 form nips with the respective rollers 20.
In operation, envelopes 22 travel in the direction of arrow 23 and are received in spaced apart succession at the end of the operative run of the belts 1 and 2 defined by the pulleys 3. As the leading edge of each envelope 22 passes over the vacuum chamber 6 the rotary valve member con nects this chamber to the vacuum source so that the envelope is held to the belts 1 and 2 and is thus advanced. As the leading of the envelope passes over the chamber 7 that chamber is evauated and the vacuum is cut off from the chamber 6.
The further chambers 8, 9, 10 and 11 are then successively evacuated and then cut off from the vacuum source und the cycle is repeated with the next envelope to be received. Tbe vacuum is cut-off from the chamber 11 as the leading edge of the envelope enters the nip between the rollers 20 and 21 whereupon the speed of travel of the envelope is considerably reduced.
At this moment a blast of compressed air is delivered from a nozzle 24 under the trailillg edge of the envelope, the nozzle 24 being arranged between the belts 1 and 2, This lifts the trailing edge of the retarded envelope so that the leading edge of the following envelope which is travelling faster than the retarded envelope passes under the latter until the leading edge of the said following envelope reaches the nip between the rollers 20 and 21 whereupon the speed of the said following envelope is also retarded to match the speed of the envelope it underlies. Thus the spaced apart succession of envelopes along the operative run of the belts 1, 2 is changed to an overlapping succession of envelopes at the nip between the rollers.
The trailing ends of the envelopes are in the form of open closure flaps 25 which are gummed individually by a doctor roller (not shown) at the entry end of the operative run of the belts 1, 2 or upstream thereof, The factors affecting the change over from the spaced apart succession to the overlapping succession of the envelopes are arranged such that in the overlapping succession of the envelopes are arranged such that in the overlapping succession the spacing between the trailing edges of successive envelopes is slightly greater than the dimension of the gummed area of each closure flap measured in the direction of advance of the envelopes. After passing through the nip between the rollers 20 and 21 the overlapping succession of envelopes pass through a drying zone in which the gummed areas are dried. Since the flaps 25 are cut back from the side edges of the envelopes the rollers 21 can be arranged so as to contact the envelopes over their side edges without contacting the gummed areas.
Referring to Figs. 3 to 8, an endless belt 26 has a repeating pattern of perforations, each pattern comprising a leading central succesison 27 of perforations and two trailing outer successions 27a of perforations as shown in Fig. 4. The belt 26 is bonded at each side to an endless toothed belt 28 which is in mesh with a toothed wheel 29 at each end of each of two driving pulleys 30 and 31. Downstream' of the belt 26 is another endless belt 32 which is continuously perforated as at 33 in Fig, 4. Like the belt 26, the belt 32 is bonded at each side to an endless toothed belt 34 which is in mesh with a toothed wheel 35 at each end of each of two driving pulleys, one of which is shown at 36. The speed of the belt 32 is considerably less than the speed of the belt 26.
Under the operative run of the endless belt 26 is a vacuum chamber 37 extending from the upstream pulley 30 towards but short of the downstream pulley 31. The vacuum chamber 37 is in continuous com- munication with a source of vacuum and has upper openings lying in the path of the perforations 27a. Between the vacuum chamber 37 and the downstream pulley 31 is another vacuum chamber 38 which is in intermittent eommunication with a source of vacuum and also has upper openings ling in the path of the perforations 27a.
The chambers 37 and 38 are so shaped as to accommodate adjustment, lengthwise of the operative run of the belt 26, of a pressure chamber 39 which is in intermittent communication with a pressure source and has upper openings lying in the path of the perforations 27. The adjustability of the chamber 39 is to accommodate various sizes of envelopes.
Under the operative run of the endless belt 32 at the upstream end thereof is a vacuum chamber 40 in intermittent communication with a vacuum source. Under the remainder of the operative run of the endless belt 32 there is also a vacuum chamber 41 in eontinuous communication with a vacuum source. The chambers 40 and 41 have upper openings in the paths of the perforations 33.
Upstream of the pulley 30 is a doctor roller 42 which cooperates with a lower roller 43 to apply gum to open closure flaps 25 forming the trailing ends of the envelopes 22. Valves 44, 45, 46 are shown diagrammaticaly in Fig. 5, valve 44 providing the intermittent communication of the pressure chamber 39 with a pressure source and valves 45 and 46 providing the intermittent communication of the respeetive vacuum chambers 38 and 40 with a vacuum source. The valves 44, 45, 46 each have a rotary valve member on a convenient rotary shaft. The valves 45, 46 are shown in Fig. 3 with their rotary valve members on a shaft 47 carrying the doctor roller 42.
In operation, the envelopes 22 travel in the direction of arrow 48 and firstly pass in spaced apart succession between the doctor roller 42 and the lower roller 43 where the open closure flaps 25 are gummed. Thereafter the envelopes enter the operative run of the belt 26 and the introduction of each envelope is so timed that it overlies the perforations 27a. These per forations pass over the upper openings in the continuously evacuated vacuum.chamber 37 as shown to the right in Figs. 3, 4 and 7 so that the leading end part of the envelope is drawn to the belt 26 and therefore moves with it.
When the leading ones of the perforations 27a start to pass over the upper openings in the vacuum chamber 38 this vacuum chamber is evacuated so that the vacuum chamber 38 also comes into play in drawing the envelope to the belt 26.
The leading ones of the perforations 27a pass over the upper openings in the evacuated vacuum chamber 38 and around the pulley 31 so- that the envelope is held to the belt 26 by a diminishing number of the perforaitons 27a. The envelope continues to progress at the same speed as the belt 26 with the leading edge passing beyond the pulley 31 and over the pulley 36. When the trailing ones of the perforations 27a have passed beyond the upper openings in the continuously evacuated vacuum chamber 37 the envelope is held to the belt 26 merely by the evacuated vacuum chamber 38 and the leading edge of the envelope overlies the downstream end of the vacuum chamber 40 which up to that time has not been evacuated so as to allow the leading edge of the envelope to slide over the slower moving belt 32.
At this time the vacuum chamber 38 ceases to be evacuated and simultaneously the vacuum chamber 40 is evacuated. Thus the trailing part of the envelope ceases to be drawn to the belt 26 by the remainder of the perforations 27a passing over the upper openings in the vacuum chamber 38 and the leading part of the. envelope is drawn to the belt 32 by the perforations 33 passing over the upper openings in the evacuated vacuum chamber 40. By this means the speed of the envelope is suddenly reduced from the speed of the belt 26 to the speed of the belt 32, on the one hand, without being subject to buckling and, on the other hand, without losing entrainment by either of the belt 26 and 32.
When the perforations 27a have passed beyond the vacuum chamber 38 this chamber is again evacuated. A following envelope overlies another set of perforations 27a with a set of perforations 27 moving ahead of the said following envelope. Be cause of the sudden reduction in the speed of the retarded envelope, the following envelope, which is moving at the higher speed of the belt 26, starts to catch up with the retarded envelope and the pressure chamber 39 is pressurised as the leading edge of the following envelope approaches the trailing edge of the retarded envelope so that at blast of air is emitted from the upper openings in the pressure chamber 39 and through the perforations 27 to lift the trailing part of the retarded envelope and allow the following envelope to move under the retarded envelope.
The pressure chamber 39 then ceases to be pressurised and while the retarded envelope starts to come under the influence of the continuously evacuated vacuum chamber 41 the vacuum chamber 40 ceases to be evacuated so as to allow the leading edge of the following envelope to slide under the retarded envelope and over the portion of the slower moving belt 32 overlying the vacuum chamber 40. When the leading edge of the following envelope overlies the downstream end of the vacuum chamber 40 the vacuum chamber 38 again ceases to be evacuated and simultaneously the vacuum chamber 40 again becomes evacuated so that the following envelope is retarded to the speed of the belt 32. In this way, a faster moving spaced apart succession of envelopes is changed to a slower moving overlapping succesion of envelopes as shown in Fig. 3. Again, the factors affecting the changeover from the spaced apart succession to the overlapping succesion of the envelopes are arranged such that in the overlapping succession the spacing between the trailing edges of successive envelopes is slightly greater than the dimension of the gummed area of each closure flap measured in the direction of advance of the envelopes.
The bonding of the belts 26 and 32 respectively to the toothed belts 28 and 34 which are in mesh respectively with toothed wheels 29 and 35 on the ends of driving pulleys 30, 31 and 36 is to preserve correct timing between the passage of the belts 26 and 32 with the suction and air blast sequence which is of particular importance with the belt 26. Another means of preserving the correct timing is shown in Fig. 9 where a fragment of the belt 26 is shown which is continuously perforated as at 49 adjacent to each edge of the belt. Also shown in Fig. 9 is a wheel 50 having pegs 51 around its circumference engageable with the perforations 49, the wheel 50 being shown on the driving pulley 30. Thus, the perforations 49 replace the toothed belts 28 and the wheel 50 replaces the toothed wheel 29. A similar belt driving arrangement may be provided in connection with the belt 32.
Any one of the embodiments described above may be incorporated in an envelope making machine in which envelopes are made from a continuous strip of paper and delivered into a stack. When embodied in an envelope making machine there will be upstream of each embodiment, stations for Cutting the strip into separate blanks, for folding the back flaps and for folding and cementing the side flaps. The open closure flaps are then gummed with the envelopes proceding in spaced apart succession and then proceed at a slower speed in overlapping succession through a drying zone where the gum on the open closure flaps is dried. Thereafter the closure flaps are folded over but do not become cemented to the back flaps because of the earlier drying of the gum on the open closure flaps. Finally, the envelopes are delivered into a stack.
WHAT WE CLAIM IS: - 1. Apparatus for changing a flow of envelopes in spaced apart succession into a slower flow of envelopes in overlapping succession, the apparatus comprising an endless perforated belt conveyor having an upper operative run, vacuum chamber chamber means underlying the operative run of the conveyor, with upper openings in the path of the perforations in the conveyor, whereby envelopes introduced in spaced apart succession to the operative run of the conveyor can be held by suction to the operative run of the conveyor and moved with the conveyor, means beyond the downstream end of the operative run of the conveyor for retarding the envelopes as they leave the conveyor, and means under the operative run of the conveyor for intermittently delivering a blast of air upwards to lift the trailing portion of each retarded envelope and permit the leading edge of a following envelope moving with the conveyor, to pass under the trailing portion of the retarded envelope and thereby change the spaced apart succession of envelopes into an overlapping succession.
2. Apparatus according to claim 1, wherein the endless perforated belt conveyor comprises two endless belts in parallel spaced apart relation and which are continuously perforated, the vacuum chamber means comprises a succession of vacuum chambers underlying the upper operative run of each of the belts, which vacuum chambers can be successively evacuated, and the means for intermittently delivering a blast of air is arranged between the belts.
3. Apparatus according to claim 2, wherein the means for retarding the envelopes comprises rollers which are rotatable with a peripheral velocity less than the speed of the belts, the rollers forming a nip therebetween to receive the envelopes.
4. Apparatus according to claim 1, whrein the endless perforated belt conveyor compirses a single endless belt having a repeating pattern of perforations, the vacuum chamber means comprises a first vacuum chamber which can be continually evacuated and a second vacuum chamber downstream of the first and which can be intermittently evacuated, the repeating pattern of perforations including some perforations for passing over the vacuum chambers and other perforations for passing over the means for intermittently delivering a blast of air.
5. Apparatus according to claim 4, wherein the means for retarding the envelopes comprises a second single endless belt which is continuously perforated and the speed of which is less than that of the first mentioned belt, a third vacuum chamber under an upper operaitve run of the second belt, which third chamber can be intermittently evacuated and a fourth vacuum chamber also under the upper operative run of the second belt and downstream of the third chamber, which fourth chamber can be continually evacuated, the third and fourth chambers being operable through the perforations in the second belt for transporting envelopes with the second belt and the second and third chambers being arranged to be alternately evacuated to effect transfer of an envelope from the first belt to the second belt without loss of entrainment and without buckling of the envelope.
6. Apparatus for changing a flow of envelopes in spaced apart succession into a slower flow of envelopes in overlapping succession, substantially as hereinbefore described with reference to Figs. 1 and 2 of the accompanying drawings.
7. Apparatus for changing a flow of envelopes in spaced apart succession into a slower flow of envelopes in overlapping succession substantially as hereinbefore descirbed with reference to Figs. 3 to 8 of the accompanying drawings.
**WARNING** end of DESC field may overlap start of CLMS **.

Claims (9)

**WARNING** start of CLMS field may overlap end of DESC **. wheel 50 being shown on the driving pulley 30. Thus, the perforations 49 replace the toothed belts 28 and the wheel 50 replaces the toothed wheel 29. A similar belt driving arrangement may be provided in connection with the belt 32. Any one of the embodiments described above may be incorporated in an envelope making machine in which envelopes are made from a continuous strip of paper and delivered into a stack. When embodied in an envelope making machine there will be upstream of each embodiment, stations for Cutting the strip into separate blanks, for folding the back flaps and for folding and cementing the side flaps. The open closure flaps are then gummed with the envelopes proceding in spaced apart succession and then proceed at a slower speed in overlapping succession through a drying zone where the gum on the open closure flaps is dried. Thereafter the closure flaps are folded over but do not become cemented to the back flaps because of the earlier drying of the gum on the open closure flaps. Finally, the envelopes are delivered into a stack. WHAT WE CLAIM IS: -
1. Apparatus for changing a flow of envelopes in spaced apart succession into a slower flow of envelopes in overlapping succession, the apparatus comprising an endless perforated belt conveyor having an upper operative run, vacuum chamber chamber means underlying the operative run of the conveyor, with upper openings in the path of the perforations in the conveyor, whereby envelopes introduced in spaced apart succession to the operative run of the conveyor can be held by suction to the operative run of the conveyor and moved with the conveyor, means beyond the downstream end of the operative run of the conveyor for retarding the envelopes as they leave the conveyor, and means under the operative run of the conveyor for intermittently delivering a blast of air upwards to lift the trailing portion of each retarded envelope and permit the leading edge of a following envelope moving with the conveyor, to pass under the trailing portion of the retarded envelope and thereby change the spaced apart succession of envelopes into an overlapping succession.
2. Apparatus according to claim 1, wherein the endless perforated belt conveyor comprises two endless belts in parallel spaced apart relation and which are continuously perforated, the vacuum chamber means comprises a succession of vacuum chambers underlying the upper operative run of each of the belts, which vacuum chambers can be successively evacuated, and the means for intermittently delivering a blast of air is arranged between the belts.
3. Apparatus according to claim 2, wherein the means for retarding the envelopes comprises rollers which are rotatable with a peripheral velocity less than the speed of the belts, the rollers forming a nip therebetween to receive the envelopes.
4. Apparatus according to claim 1, whrein the endless perforated belt conveyor compirses a single endless belt having a repeating pattern of perforations, the vacuum chamber means comprises a first vacuum chamber which can be continually evacuated and a second vacuum chamber downstream of the first and which can be intermittently evacuated, the repeating pattern of perforations including some perforations for passing over the vacuum chambers and other perforations for passing over the means for intermittently delivering a blast of air.
5. Apparatus according to claim 4, wherein the means for retarding the envelopes comprises a second single endless belt which is continuously perforated and the speed of which is less than that of the first mentioned belt, a third vacuum chamber under an upper operaitve run of the second belt, which third chamber can be intermittently evacuated and a fourth vacuum chamber also under the upper operative run of the second belt and downstream of the third chamber, which fourth chamber can be continually evacuated, the third and fourth chambers being operable through the perforations in the second belt for transporting envelopes with the second belt and the second and third chambers being arranged to be alternately evacuated to effect transfer of an envelope from the first belt to the second belt without loss of entrainment and without buckling of the envelope.
6. Apparatus for changing a flow of envelopes in spaced apart succession into a slower flow of envelopes in overlapping succession, substantially as hereinbefore described with reference to Figs. 1 and 2 of the accompanying drawings.
7. Apparatus for changing a flow of envelopes in spaced apart succession into a slower flow of envelopes in overlapping succession substantially as hereinbefore descirbed with reference to Figs. 3 to 8 of the accompanying drawings.
8. Apparatus for changing a flow of en
velopes in spaced apart succession into a slower flow of envelopes in overlapping succession, substantially as hereinbefore described with reference to Fig. 9 of the accompanying drawings.
9. An envelope making machine in which envelopes can be made from a continuous strip of paper and delivered into a stack, the machine comprising apparatus according to any preceding claim downstream of the apparatus stations for cutting the strip into separate blanks, for folding the back flaps, for folding and cementing the side. flaps and for gumming the open closure flaps, and upstream of the apparatus stations for drying of the gum on the open closure flaps, for folding over the closure flaps with the dried gum thereon and for delivering the envelopes into a stack.
GB45687/77A 1978-05-04 1978-05-04 Apparatus for changing a flow of envelopes in spaced apart succession into a slower flow of envelopes in overlapping succession Expired GB1577158A (en)

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Application Number Priority Date Filing Date Title
GB45687/77A GB1577158A (en) 1978-05-04 1978-05-04 Apparatus for changing a flow of envelopes in spaced apart succession into a slower flow of envelopes in overlapping succession

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB45687/77A GB1577158A (en) 1978-05-04 1978-05-04 Apparatus for changing a flow of envelopes in spaced apart succession into a slower flow of envelopes in overlapping succession

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GB1577158A true GB1577158A (en) 1980-10-22

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0156173A2 (en) * 1984-03-24 1985-10-02 M.A.N.-ROLAND Druckmaschinen Aktiengesellschaft Device for guiding sheets printed on one side and on both sides
EP0503531A1 (en) * 1991-03-15 1992-09-16 Georg Spiess GmbH Device for realising a formation of underlapping objects
EP0503530A1 (en) * 1991-03-15 1992-09-16 Georg Spiess GmbH Device for realising a formation of underlapping objects
WO1998028192A1 (en) * 1996-12-20 1998-07-02 Interket Trykkeri A/S Label stacker for a rotary machine/apparatus
EP1375399A2 (en) * 2002-06-29 2004-01-02 Kolbus GmbH & Co. KG Apparatus for separating a stream of overlapping printed products into a stream of spaced apart printed products
EP1522513A3 (en) * 2003-10-06 2008-03-05 Bahmüller Maschinenbau Präzisionswerkzeuge GmbH Device for separating flat products arranged in shingled formation
WO2016174223A1 (en) * 2015-04-30 2016-11-03 Koenig & Bauer Ag Method and device for arranging sheets in an overlapping position between successive processing stations

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0156173A2 (en) * 1984-03-24 1985-10-02 M.A.N.-ROLAND Druckmaschinen Aktiengesellschaft Device for guiding sheets printed on one side and on both sides
EP0156173A3 (en) * 1984-03-24 1987-09-23 M.A.N.-Roland Druckmaschinen Aktiengesellschaft Device for guiding sheets printed on one side and on both sides
EP0503531A1 (en) * 1991-03-15 1992-09-16 Georg Spiess GmbH Device for realising a formation of underlapping objects
EP0503530A1 (en) * 1991-03-15 1992-09-16 Georg Spiess GmbH Device for realising a formation of underlapping objects
WO1998028192A1 (en) * 1996-12-20 1998-07-02 Interket Trykkeri A/S Label stacker for a rotary machine/apparatus
US6234053B1 (en) 1996-12-20 2001-05-22 Interket Trykkeri A/S Label stacker for a rotary machine/apparatus
EP1375399A2 (en) * 2002-06-29 2004-01-02 Kolbus GmbH & Co. KG Apparatus for separating a stream of overlapping printed products into a stream of spaced apart printed products
EP1375399A3 (en) * 2002-06-29 2005-01-26 Kolbus GmbH & Co. KG Apparatus for separating a stream of overlapping printed products into a stream of spaced apart printed products
EP1522513A3 (en) * 2003-10-06 2008-03-05 Bahmüller Maschinenbau Präzisionswerkzeuge GmbH Device for separating flat products arranged in shingled formation
WO2016174223A1 (en) * 2015-04-30 2016-11-03 Koenig & Bauer Ag Method and device for arranging sheets in an overlapping position between successive processing stations
US10052886B2 (en) 2015-04-30 2018-08-21 Koenig & Bauer Ag Method and apparatus for arranging sheets in a shingled position

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Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee