EP0073815B1 - Device for opening envelopes or similar objects - Google Patents

Device for opening envelopes or similar objects Download PDF

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Publication number
EP0073815B1
EP0073815B1 EP82901125A EP82901125A EP0073815B1 EP 0073815 B1 EP0073815 B1 EP 0073815B1 EP 82901125 A EP82901125 A EP 82901125A EP 82901125 A EP82901125 A EP 82901125A EP 0073815 B1 EP0073815 B1 EP 0073815B1
Authority
EP
European Patent Office
Prior art keywords
knife
knife holder
movable
blade
handle
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
EP82901125A
Other languages
German (de)
French (fr)
Other versions
EP0073815A1 (en
Inventor
François MORAX
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.)
Delta Real Establishment
Original Assignee
Delta Real Establishment
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 Delta Real Establishment filed Critical Delta Real Establishment
Publication of EP0073815A1 publication Critical patent/EP0073815A1/en
Application granted granted Critical
Publication of EP0073815B1 publication Critical patent/EP0073815B1/en
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43M—BUREAU ACCESSORIES NOT OTHERWISE PROVIDED FOR
    • B43M7/00—Devices for opening envelopes
    • B43M7/008—Devices for opening envelopes with a cylindrical cutter
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43M—BUREAU ACCESSORIES NOT OTHERWISE PROVIDED FOR
    • B43M7/00—Devices for opening envelopes
    • B43M7/007—Devices for opening envelopes with cutting blades
    • 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
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S83/00—Cutting
    • Y10S83/912—Envelope openers
    • 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
    • Y10T83/00—Cutting
    • Y10T83/869—Means to drive or to guide tool
    • Y10T83/8776—Constantly urged tool or tool support [e.g., spring biased]
    • 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
    • Y10T83/00—Cutting
    • Y10T83/869—Means to drive or to guide tool
    • Y10T83/8776—Constantly urged tool or tool support [e.g., spring biased]
    • Y10T83/8785—Through return [noncutting] stroke
    • 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
    • Y10T83/00—Cutting
    • Y10T83/869—Means to drive or to guide tool
    • Y10T83/8798—With simple oscillating motion only
    • Y10T83/8817—Axially entending cutting edge
    • Y10T83/8818—Axially progressing cut

Definitions

  • the invention relates to a device for opening letters with the features of the preamble of claim 1.
  • Such a device is previously known from US Pat. No. 1,666,533.
  • This has a stationary base part, which carries a knife carrier for the stationary knife blade in a pivotable manner.
  • This pivotable knife holder is connected to a spring that constantly tries to pull it towards the movable knife holder.
  • the stationary knife blade is positioned horizontally and flush with the letter system.
  • the letter system is essentially horizontal from the front of the device.
  • a rotatable knife carrier in the form of a roller is connected to the base part. This accommodates the movable knife blade in a suitable slot that runs obliquely to the longitudinal axis. This knife blade protrudes from the circumferential surface by the thickness of the letter edge to be cut off.
  • the movable knife holder is operated by means of a separately designed, attached handle.
  • a device for opening letters in which a knife roller driven by means of an electric motor and having a substantially circular cross-section is used.
  • the stationary, spring-loaded counter knife runs obliquely upwards.
  • the CH-PS 242 181 describes a device for opening letters, in which a pivotable plate is connected to a base plate. This also serves as a handle but also as a letter system. The front of this plate carries a knife that works with a counter knife on an upright plate, which is pivotally pressed against this knife.
  • a similar device is finally known from DE-PS 24 88 66.
  • the letter to be opened is clamped onto an oblique plate. This plate is swiveled and works together with a cutter bar.
  • the invention has for its object to improve in particular the device described above for opening letters so that the knife carrier is material-saving and easier to manufacture in series production and also the knife blades are easier to manufacture and use.
  • the invention offers the advantage of making the knife carrier relatively simple and material-saving. It allows simple knife training and attachment. Finally, the handle for actuating the device is already molded onto the knife carrier, so that the installation of an additional handle is not necessary.
  • the device for opening letters or the like has a base part 1, a stationary knife holder 2, a movable knife holder 3 and a handle 4 formed thereon.
  • the movable knife carrier 3 is an essentially rectangular block 5 which extends over the full knife length and has flat side surfaces 6.
  • Eccentrically arranged pivot pins 7 are formed on the side surfaces 6 and are rotatably mounted in bearings of the base part 1, which are not shown in detail.
  • the block 5 has a circular segment surface 8, the center of which forms the central axis of the pivot pin 7.
  • a flat bearing surface 9 for the movable knife blade 10 adjoins the circular segment surface 8 on the upper side, rising slightly inwards.
  • the movable knife blade 10 is fastened to the block 5 by means of screws 11.
  • the bearing surface 9 runs inclined in the longitudinal direction of the block 5, namely, as can be seen from FIG. 1, rising from left to right in the drawing figure.
  • the movable knife blade 10 protrudes with its cutting edge 12 over the circular segment surface 8, specifically around the edge to be cut off from the envelope 13 to be opened, preferably the cutting edge 12 ⁇ m protrudes 0.6 mm over the circular segment surface 8, so that 0.6 mm of the envelope 13 are cut off.
  • the block 5 continues in its rear region into an upwardly extending part 14, which extends over the entire length of the block, in order then to merge into a part 15, which is bent in cross section and tapered towards the front.
  • Parts 14 and 15 form handle 4, which can be moved by hand in the direction of arrow I to actuate the device.
  • an opening 16 is formed in the handle part 15, as indicated by the broken line.
  • a helical spring 17 can be arranged around the pivot pin 7 for this purpose, one end of which is connected to the one side cheek 18 of the base part 1 and the other end to the block 5.
  • the stationary knife holder 2 is also arranged as a longitudinal block 19. It is pivotally supported to a limited extent in the side cheeks 18 of the base part 1.
  • the parallel side surfaces 20 of the block have pivot pins 21 which are rotatably mounted in bearings of the side cheeks 18, not shown.
  • a further blade 23 is fastened by means of screws 24 to the plane 22 facing the block 5, which extends obliquely upwards from the pivot pin 21 and towards the block 5.
  • the cutting edge 25 of the knife blade 23 runs flush with the flat upper side 26, which serves as a support plane for the envelope 13.
  • a side stop 27 for the envelope 13 protruding above this upper side 26 is formed. This side stop 27 is arranged so that the envelope 13 can just be pushed up to the circular segment surface 8 up to the stop between the cutting edges 12 and 25.
  • a coil spring 29 is arranged around at least one of the pivot pins 21, one end of which is connected to the side wall 18 and the other end of which is connected to the block 19.
  • the base part 1 is U-shaped and has two lateral cheeks 18 and a bottom 30. In the bottom 30 there is a recess 31, which is covered by a pull-out waste drawer 32 for receiving the cut letter envelope.
  • the block 19 is a rigid component of the base part 1.
  • the knife carrier block 5 is not only pivotally mounted, but is also movable in the direction IV towards the stationary knife blade 23.
  • a fixed axis 33 is provided for the knife block 5, which is rigidly mounted in the side cheeks 18 of the base part 1.
  • the block 5 has a slot-like recess 34 through which the axis 33 extends. Springs 35 are supported on the one hand against the wall of this recess and on the other hand against the rigid axis 33, as a result of which the knife block 5 is constantly pressed with its knife edge 12 against the knife edge 25 in the contact area.
  • the base part 1 is open towards the bottom.
  • the flat blade 23 is rigidly fixed in the recessed position by means of screws, not shown, on the flat, slightly sloping top side 40 in the direction of contact V for the envelope or the like to be opened.
  • the undercut cutting edge 25 of this knife 23 projects somewhat beyond the wall of the upper side 40 into the free space of an opening 41 on the upper side 40.
  • the block 5, which carries the movable knife blade 10 may have only lateral arms 43 which extend the block 5 towards the front 42 and which are pivotably mounted in the side walls 44.
  • the hubs 45 engage in elongated holes 47 in the side walls 44 by means of pivot pins 46 and are pressed there toward the front 42 by means of compression springs 48.
  • the cutting edge 12 of the knife blade 10, which projects beyond the block 5 by the amount of the envelope to be cut or the like, is thus kept in constant contact with the edge 25 of the knife blade 23.
  • the knife blade 10 in turn extends inclined in the longitudinal direction of the block 5, as in the embodiment according to FIG. 3, and also remains in contact with the knife blade 23 in the starting position.
  • the handle 4 continues towards the rear 49.
  • the cut is made by operating the handle 4 in the direction of the arrow 1.
  • the cut can thus be made by actuating the handle on the side facing away from the system.
  • the knife block 19 is in turn, as in the embodiment of FIG. 3, formed.
  • the housing 1 can have lateral hubs 54 for mounting the lateral arms 43.

Landscapes

  • Knives (AREA)

Abstract

Device for opening mail envelopes (13), in which a movable blade (10) is mounted on a support (3) and moves against a fixed edge which can be a blade (25). The movable blade extends diagonally in a longitudinal direction. The cutting is carried out in the place where the blades (10, 25) are engaged, by means of a progressive displacement of the movable blade along the edge of the envelope. The blades (10, 25) are mounted on a frame (1). A waste container (32), rearwardly removable, can be placed under the blades.

Description

Die Erfindung betrifft eine Vorrichtung zum Öffnen von Briefen mit den Merkmalen des Oberbegriffs des Patentanspruchs 1.The invention relates to a device for opening letters with the features of the preamble of claim 1.

Eine derartige Vorrichtung ist aus der US-PS 1 666 533 vorbekannt. Diese besitztein stationäres Grundteil, welches begrenzt schwenkbar einen Messerträger für das stationäre Messerblatt trägt. Dieser schwenkbare Messerträger ist mit einer Feder verbunden, die ihn ständig in Richtung zum beweglichen Messerträger hin zu ziehen versucht. Das stationäre Messerblatt ist liegend und bündig mit der Briefanlage angeordnet. Die Briefanlage erfolgt von der Vorderseite der Vorrichtung aus im wesentlichen horizontal. Mit dem Grundteil verbunden ist ein drehbarer Messerträger in Form einer Walze. Dieser nimmt das bewegliche Messerblatt in einem passenden, zur Längsachse schräg verlaufenden Schlitz auf. Dieses Messerblatt steht gegenüber der Umfangsfläche um die Stärke des abzuschneidenden Briefrandes vor. Der bewegliche Messerträger wird mittels eines getrennt ausgebildeten, angesetzten Handgriffes betätigt.Such a device is previously known from US Pat. No. 1,666,533. This has a stationary base part, which carries a knife carrier for the stationary knife blade in a pivotable manner. This pivotable knife holder is connected to a spring that constantly tries to pull it towards the movable knife holder. The stationary knife blade is positioned horizontally and flush with the letter system. The letter system is essentially horizontal from the front of the device. A rotatable knife carrier in the form of a roller is connected to the base part. This accommodates the movable knife blade in a suitable slot that runs obliquely to the longitudinal axis. This knife blade protrudes from the circumferential surface by the thickness of the letter edge to be cut off. The movable knife holder is operated by means of a separately designed, attached handle.

Aus der GB-PS 733 080 ist eine Vorrichtung zum Öffnen von Briefen bekannt, bei der eine rotierend mittels eines Elektromotors angetriebene Messerwalze mit im wesentlichen kreisförmigem Querschnitt verwendet wird. Das stationäre federnd angedrückte Gegenmesser verläuft schräg nach aufwärts. Es ist eine horizontale Briefanlage vorhanden.From GB-PS 733 080 a device for opening letters is known, in which a knife roller driven by means of an electric motor and having a substantially circular cross-section is used. The stationary, spring-loaded counter knife runs obliquely upwards. There is a horizontal letter system.

Die CH-PS 242 181 beschreibt eine Vorrichtung zum Öffnen von Briefen, bei der mit einer Grundplatte eine schwenkbare Platte verbunden ist. Diese dient zugleich als Handgriff aber auch als Briefanlage. Die Frontseite an dieser Platte trägt ein Messer, das mit einem Gegenmesser an einer aufrecht stehenden Platte zusammenarbeitet, welche schwenkbar federnd gegen dieses Messer angedrückt wird.The CH-PS 242 181 describes a device for opening letters, in which a pivotable plate is connected to a base plate. This also serves as a handle but also as a letter system. The front of this plate carries a knife that works with a counter knife on an upright plate, which is pivotally pressed against this knife.

Eine ähnliche Vorrichtung ist schließlich aus der DE-PS 24 88 66 bekannt. Der zu öffnende Brief wird an einer schrägen Platte festgeklemmt. Diese Platte wird geschwenkt und arbeitet mit einem Messerbalken zusammen.A similar device is finally known from DE-PS 24 88 66. The letter to be opened is clamped onto an oblique plate. This plate is swiveled and works together with a cutter bar.

Der Erfindung liegt die Aufgabe zugrunde, insbesondere die eingangs beschriebene Vorrichtung zum Öffnen von Briefen so zu verbessern, daß der Messerträger materialsparender und in Serienfertigung einfacher herstellbar wird und zudem die Messerblätter einfacher herstellbar und einsetzbar werden.The invention has for its object to improve in particular the device described above for opening letters so that the knife carrier is material-saving and easier to manufacture in series production and also the knife blades are easier to manufacture and use.

Die Erfindung löst diese Aufgabe mit den Merkmalen des Kennzeichnungsteils des neuen Patentanspruchs 1.The invention solves this problem with the features of the characterizing part of the new patent claim 1.

Die Erfindung bietet den Vorteil, den Messerträger verhältnismäßig einfach und materialsparend auszubilden. Sie erlaubt eine einfache Messerausbildung und Befestigung. Schließlich ist der Handgriff zur Betätigung der Vorrichtung bereits an den Messerträger mitangeformt, so daß die Montage eines zusätzlichen Handgriffes entfällt.The invention offers the advantage of making the knife carrier relatively simple and material-saving. It allows simple knife training and attachment. Finally, the handle for actuating the device is already molded onto the knife carrier, so that the installation of an additional handle is not necessary.

Weitere Ausgestaltungen der Erfindung ergeben sich aus den Unteransprüchen.Further refinements of the invention result from the subclaims.

Die Erfindung wird nachfolgend anhand von in der Zeichnung dargestellten
Ausführungsbeispielen näher erlätert. In der Zeichung zeigen:

  • Fig. 1 eine Vorderansicht;
  • Fig. 2 eine Draufsicht;
  • Fig. 3 eine Seitenansicht, teilweise im Schnitt; und
  • Fig. 4 eine Ansicht, wie in Fig. 3, einer geänderten Ausführung;
  • Fig. 5 eine Ansicht, wie in Fig. 3, einer anderen Ausführung; und
  • Fig. 6 eine Ansicht, wie in Fig. 3, einer weiteren Ausführung.
The invention is illustrated below with reference to the drawing
Embodiments explained in more detail. In the drawing show:
  • Fig. 1 is a front view;
  • Fig. 2 is a plan view;
  • Fig. 3 is a side view, partly in section; and
  • Fig. 4 is a view, as in Fig. 3, of a modified embodiment;
  • Fig. 5 is a view as in Fig. 3, another embodiment; and
  • Fig. 6 is a view as in Fig. 3, another embodiment.

Die Vorrichtung zum Öffnen von Briefen oder dergleichen weist ein Grundteil 1, einen stationären Messerträger 2, einen beweglichen Messerträger 3 und einen an diesem ausgebildeten Handgriff 4 auf.The device for opening letters or the like has a base part 1, a stationary knife holder 2, a movable knife holder 3 and a handle 4 formed thereon.

Der bewegliche Messerträger 3 ist ein sich über die volle Messerlänge erstreckender, im wesentlichen rechteckförmiger Block 5 mit planen Seitenflächen 6.The movable knife carrier 3 is an essentially rectangular block 5 which extends over the full knife length and has flat side surfaces 6.

An den Seitenflächen 6 sind exzentrisch angeordnete Schwenkzapfen 7 ausgebildet, die in nicht näher dargestellten Lagern des Grundteils 1 drehbar gelagert sind.Eccentrically arranged pivot pins 7 are formed on the side surfaces 6 and are rotatably mounted in bearings of the base part 1, which are not shown in detail.

An der vorderen Stirnseite besitzt der Block 5 eine Kreissegmentfläche 8, deren Mittelpunkt die Mittelachse der Schwenkzapfen 7 bildet.At the front end, the block 5 has a circular segment surface 8, the center of which forms the central axis of the pivot pin 7.

An die Kreissegmentfläche 8 schließt sich an der Oberseite nach einwärts leicht ansteigend eine plane Auflagefläche 9 für das bewegliche Messerblatt 10 an. Das bewegliche Messerblatt 10 ist mittels Schrauben 11 am Block 5 befestigt. Die Auflagefläche 9 verläuft in Längsrichtung des Blockes 5 geneigt und zwar, wie aus Fig. 1 ersichtlich, in der Zeichnungsfigur von links nach rechts ansteigend.A flat bearing surface 9 for the movable knife blade 10 adjoins the circular segment surface 8 on the upper side, rising slightly inwards. The movable knife blade 10 is fastened to the block 5 by means of screws 11. The bearing surface 9 runs inclined in the longitudinal direction of the block 5, namely, as can be seen from FIG. 1, rising from left to right in the drawing figure.

Das bewegliche Messerblatt 10 ragt mit seiner Schneidkante 12 über die Kreissegmentfläche 8 vor und zwar um den vom zu öffnenden Briefkuvert 13 abzuschneidenden Rand, vorzugsweise ragt die Schneidkante 12 pm 0,6 mm über die Kreissegmentfläche 8 vor, so daß 0,6 mm des Briefkuverts 13 abgeschnitten werden.The movable knife blade 10 protrudes with its cutting edge 12 over the circular segment surface 8, specifically around the edge to be cut off from the envelope 13 to be opened, preferably the cutting edge 12 μm protrudes 0.6 mm over the circular segment surface 8, so that 0.6 mm of the envelope 13 are cut off.

Der Block 5 setzt sich in seinem rückwärtigen Bereich in einen nach aufwärts verlaufenden Teil 14 fort, der sich über die ganze Blocklänge erstreckt, um dann in einen Teil 15 überzugehen, der zur Vorderseite hin abgebogen in seinem Querschnitt sich verjüngend verläuft. Durch die Teile 14 und 15 wird der Handgriff 4 gebildet, der zur Betätigung der Vorrichtung von Hand in die Pfeilrichtung I zu bewegen ist.The block 5 continues in its rear region into an upwardly extending part 14, which extends over the entire length of the block, in order then to merge into a part 15, which is bent in cross section and tapered towards the front. Parts 14 and 15 form handle 4, which can be moved by hand in the direction of arrow I to actuate the device.

Damit von oben her das Anlegen des Briefkuverts 13 beobachtet werden kann und um die Schrauben 11 zum Auswechseln des Messerblattes 10 lösen zu können, ist, wie strichliert angedeutet, im Handgriffteil 15 eine Öffnung 16 ausgebildet.So that the application of the envelope 13 can be observed from above and to be able to loosen the screws 11 for replacing the knife blade 10, an opening 16 is formed in the handle part 15, as indicated by the broken line.

Zur selbsttätigen Rückführung des Messerblockes 5 in die durch einen nicht dargestellten Anschlag begrenzte Ausgangsstellung nach Betätigung der Vorrichtung ist der Block 5 federbelastet, wodurch er in Pfeilrichtung 11 zurückgeführt wird. Wie aus Fig. 2 ersichtlich, kann hierfür um den Schwenkzapfen 7 gewickelt eine Schraubenfeder 17 angeordnet sein, deren eines Ende mit der einen Seitenwange 18 des Grundteils 1 und mit dem anderen Ende mit dem Block 5 verbunden ist.For automatic return of the Knife block 5 in the starting position limited by a stop, not shown, after actuation of the device, the block 5 is spring-loaded, whereby it is returned in the direction of arrow 11. As can be seen from FIG. 2, a helical spring 17 can be arranged around the pivot pin 7 for this purpose, one end of which is connected to the one side cheek 18 of the base part 1 and the other end to the block 5.

Dem Messerblock 5 vorgelagert ist der stationäre Messerträger 2 ebenfalls als längs verlaufender Block 19 angeordnet. Er ist begrenzt schwenkbar in den Seitenwangen 18 des Grundteils 1 gelagert. Hierzu weisen die parallelen Seitenflächen 20 des Blockes Schwenkzapfen 21 auf, die drehbar in nicht dargestellten Lagern der Seitenwangen 18 gelagert sind.In front of the knife block 5, the stationary knife holder 2 is also arranged as a longitudinal block 19. It is pivotally supported to a limited extent in the side cheeks 18 of the base part 1. For this purpose, the parallel side surfaces 20 of the block have pivot pins 21 which are rotatably mounted in bearings of the side cheeks 18, not shown.

An der dem Block 5 zugekehrten, planen, vom Schwenkzapfen 21 schräg nach aufwärts und zum Block 5 hin verlaufenden Fläche 22 ist ein weiteres Messerblatt 23 mittels Schrauben 24 befestigt. Die Schneidkante 25 des Messerblattes 23 verläuft bündig mit der planen Oberseite 26, die als Auflageebene für das Briefkuvert 13 dient. An der einen Seite ist ein über diese Oberseite 26 empor ragender Seitenanschlag 27 für das Briefkuvert 13 ausgebildet. Dieser Seitenanschlag 27 ist dabei so angeordnet, daß das Briefkuvert 13 gerade noch bis zur Kreissegmentfläche 8 bis auf Anschlag zwischen die Schneidkanten 12 und 25 einschiebbar ist.A further blade 23 is fastened by means of screws 24 to the plane 22 facing the block 5, which extends obliquely upwards from the pivot pin 21 and towards the block 5. The cutting edge 25 of the knife blade 23 runs flush with the flat upper side 26, which serves as a support plane for the envelope 13. On one side, a side stop 27 for the envelope 13 protruding above this upper side 26 is formed. This side stop 27 is arranged so that the envelope 13 can just be pushed up to the circular segment surface 8 up to the stop between the cutting edges 12 and 25.

Im Bereich der den Messerkanten 12 und 25 zugekehrten Stirnseiten 28 des Seitenanschlages 27 gelangen die Messerkanten 12 und 25 in Berührung. Diese Berührung wird ständig dadurch aufrechterhalten, daß der Messerblock 19 in Pfeilrichtung 111 zum Block 5 hin federbelastet ist. Hierzu ist wiederum um mindestens einen der Schwenkzapfen 21 eine Schraubenfeder 29 angeordnet, deren eines Ende mit der Seitenwange 18 und deren anderes Ende mit dem Block 19 verbunden ist.In the area of the end faces 28 of the side stop 27 facing the knife edges 12 and 25, the knife edges 12 and 25 come into contact. This contact is constantly maintained by the knife block 19 being spring-loaded in the direction of arrow 111 towards block 5. For this purpose, a coil spring 29 is arranged around at least one of the pivot pins 21, one end of which is connected to the side wall 18 and the other end of which is connected to the block 19.

Das Grundteil 1 ist U-förmig ausgebildet und besitzt zwei seitliche Wangen 18 und einen Boden 30. Im Boden 30 befindet sich eine Ausnehmung 31, die von einer nach rückwärts herausziehbaren Abfallade 32 zur Aufnahme der abgeschnittenen Briefkuvertränder abgedeckt ist.The base part 1 is U-shaped and has two lateral cheeks 18 and a bottom 30. In the bottom 30 there is a recess 31, which is covered by a pull-out waste drawer 32 for receiving the cut letter envelope.

Bei der in Fig. 4 dargestellten, geänderten Ausführungsform ist der Block 19 starrer Bestandteil des Grundteils 1. Der Messerträgerblock 5 ist nicht nur schwenkbar gelagert, sondern er ist auch in Richtung IV zum stationären Messerblatt 23 hin beweglich. Hierzu ist eine raumfeste Achse 33 für den Messerblock 5 vorgesehen, die in den Seitenwangen 18 des Grundteils 1 starr gelagert ist. Der Block 5 besitzt eine langlochartige Ausnehmung 34, durch die sich die Achse 33 erstreckt. Federn 35 stützen sich einerseits gegen die Wandung dieser Ausnehmung und andererseits gegen die starre Achse 33 ab, wodurch der Messerblock 5 ständig mit seiner Messerkante 12 gegen die Messerkante 25 im Berührungsbereich gedrückt gehalten wird.In the modified embodiment shown in FIG. 4, the block 19 is a rigid component of the base part 1. The knife carrier block 5 is not only pivotally mounted, but is also movable in the direction IV towards the stationary knife blade 23. For this purpose, a fixed axis 33 is provided for the knife block 5, which is rigidly mounted in the side cheeks 18 of the base part 1. The block 5 has a slot-like recess 34 through which the axis 33 extends. Springs 35 are supported on the one hand against the wall of this recess and on the other hand against the rigid axis 33, as a result of which the knife block 5 is constantly pressed with its knife edge 12 against the knife edge 25 in the contact area.

Bei der in Fig. 5 im Schnitt dargestellten, geänderten Ausführung ist das Grundteil 1 zum Boden hin offen ausgebildet. An der planen, in Anlagerichtung V für das zu öffnende Kuvert oder dergleichen leicht abfallenden Oberseite 40 ist das plane Messerblatt 23 mittels nicht dargestellter Schrauben in versenkter Lage starr befestigt. Die hinterschnittene Schneidkante 25 dieses Messers 23 ragt etwas über die Wand der Oberseite 40 vor in den freien Raum einer Öffnung 41 an der Oberseite 40 hinein.In the modified embodiment shown in section in FIG. 5, the base part 1 is open towards the bottom. The flat blade 23 is rigidly fixed in the recessed position by means of screws, not shown, on the flat, slightly sloping top side 40 in the direction of contact V for the envelope or the like to be opened. The undercut cutting edge 25 of this knife 23 projects somewhat beyond the wall of the upper side 40 into the free space of an opening 41 on the upper side 40.

Der Block 5, der das bewegliche Messerblatt 10 trägt, weist ggf. nur seitliche, den Block 5 zur Vorderseite 42 hin verlängernde Arme 43 auf, die in den Seitenwänden 44 schwenkbar gelagert sind. Die Naben 45 greifen hierzu mittels Schwenkzapfen 46 in Langlöcher 47 in den Seitenwänden 44 ein und werden dort mittels Druckfedern 48 zur Vorderseite 42 hin beaufschlagt. Die Schneidkante 12 des Messerblattes 10, die um den abzuschneidenden Betrag des Kuverts oder desgleichen über den Block 5 vorsteht, wird damit ständig in Anlage mit der Kante 25 des Messerblattes 23 gehalten. Das Messerblatt 10 verläuft in Längsrichtung des Blockes 5 wiederum, wie bei der Ausführung nach Fig. 3, geneigt und bleibt auch in Ausgangsstellung in Anlage mit dem Messerblatt 23.The block 5, which carries the movable knife blade 10, may have only lateral arms 43 which extend the block 5 towards the front 42 and which are pivotably mounted in the side walls 44. For this purpose, the hubs 45 engage in elongated holes 47 in the side walls 44 by means of pivot pins 46 and are pressed there toward the front 42 by means of compression springs 48. The cutting edge 12 of the knife blade 10, which projects beyond the block 5 by the amount of the envelope to be cut or the like, is thus kept in constant contact with the edge 25 of the knife blade 23. The knife blade 10 in turn extends inclined in the longitudinal direction of the block 5, as in the embodiment according to FIG. 3, and also remains in contact with the knife blade 23 in the starting position.

An dem Block 5 setzt sich, entgegen den Schwenkarmen 43 gerichtet, in Richtung zur Rückseite 49 hin der Handgriff 4 fort. Durch Betätigen des Handgriffes 4 in Pfeilrichtung 1 erfolgt der Schnitt. Bei dieser Ausführung kann somit der Schnitt durch Betätigung des Handgriffes an der von der Anlage abgekehrten Seite erfolgen.On the block 5, directed against the swivel arms 43, the handle 4 continues towards the rear 49. The cut is made by operating the handle 4 in the direction of the arrow 1. In this embodiment, the cut can thus be made by actuating the handle on the side facing away from the system.

Die Ausführung nach Fig. 6 ist weitgehend derjenigen nach Fig. 5 ähnlich. Abweichend ist lediglich, daß die Schwenkarme 43 für den Messerblock 5 seitlich des Messerblattes 23 und nicht unterhalb desselben verlaufen. Der Messerblock 19 ist wiederum, wie bei der Ausführung nach Fig. 3, ausgebildet. Zur Lagerung der seitlichen Arme 43 kann das Gehäuse 1 seitliche Naben 54 aufweisen.6 is largely similar to that of FIG. 5. The only difference is that the swivel arms 43 for the knife block 5 run laterally of the knife blade 23 and not below it. The knife block 19 is in turn, as in the embodiment of FIG. 3, formed. The housing 1 can have lateral hubs 54 for mounting the lateral arms 43.

Claims (8)

1. A device for opening envelopes, comprising a stationary base having a knife holder mounted thereon for a stationary knife blade which knife blade, with its broad side face, is secured thereto in abutting relationship whilst being flush with the envelope abutment formed by the upper side of the knife holder, a movable knife blade connected to a knife holder which is swingably connected to the base and operable by a handle, the movable blade, with its broad side face being secured to a longitudinally inclined bearing surface of the movable knife holder, adjacent said movable blade a receding curved abutting surface for the envelope whose centre of curvature lies on the pivot axis of the movable knife holder and a limitedly movable resilient support of one of the knife holders to keep the cooperating knife blades in constant contact with each other, characterized in that the movable knife holder (3) is a substantially rectangular block (5), in that at the upper side of the knife holder the movable knife blade (10) is screwed on in horizontal position in that the handle (4) of the knife holder is formed thereto integrally, and in that the pivot axis (7, 46) of the knife holder is formed excentrically of its imaginary longitudinal centre axis.
2. Device according to claim 1, characterized in that the handle (4) of the movable knife holder (3) extends upwardly and forwardly to the abutment (40) of the letter envelope.
3. Device according to claim 2, characterized in that the handle (4) extending forwardly has a viewing aperture (16).
4. Device according to claim 1, characterized in that the handle (4) of the movable knife holder (3) extends rearwardly from the abutment (40) of the letter envelope.
5. Device according to claim 1, characterized in that the movable knife carrier (3) has lateral arms (43) swingably supported at the front side (42) of the base part (1).
6. Device according to claim 5, characterized in that the swingably supported ends (45, 46) of the arms (43) of the movable knife holder (3) are loaded by springs (48).
7. Device according to claim 1, characterized in that the letter abutment (40) is slightly sloping downward towards the knife blades (10, 23).
8. Device according to claim 7, characterized in that the plane of the abutment area (26) for the envelope extends approximately through the pivot axis (7) of the knife holder (3).
EP82901125A 1981-03-12 1982-03-12 Device for opening envelopes or similar objects Expired EP0073815B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3109501 1981-03-12
DE3109501A DE3109501C2 (en) 1981-03-12 1981-03-12 Device for opening envelopes

Publications (2)

Publication Number Publication Date
EP0073815A1 EP0073815A1 (en) 1983-03-16
EP0073815B1 true EP0073815B1 (en) 1986-06-11

Family

ID=6127054

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EP82901125A Expired EP0073815B1 (en) 1981-03-12 1982-03-12 Device for opening envelopes or similar objects

Country Status (12)

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US (1) US4527455A (en)
EP (1) EP0073815B1 (en)
JP (1) JPS58500941A (en)
AT (1) AT390401B (en)
AU (1) AU550971B2 (en)
BR (1) BR8206884A (en)
CH (1) CH660571A5 (en)
DE (1) DE3109501C2 (en)
DK (1) DK149267C (en)
GR (1) GR75891B (en)
SE (1) SE455481B (en)
WO (1) WO1982003206A1 (en)

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DE4301696A1 (en) * 1993-01-22 1994-08-11 Delta Real Ets Device for opening envelopes
US6260462B1 (en) * 1993-07-28 2001-07-17 William George Edward Daysh Method and device for opening cartons
IL111941A (en) * 1994-12-09 1997-08-14 Ofer Haifa Haifa And Eliahu Do Letter opener
US5974929A (en) * 1994-12-09 1999-11-02 D.G.D Haifa Ltd. Combined letter opener and letter punch
US5839342A (en) * 1995-06-29 1998-11-24 E. I. Du Pont De Nemours And Company Yarn cutter
WO1998040227A1 (en) 1997-03-11 1998-09-17 Frama Ag Letter opener
US8359962B2 (en) * 2007-12-12 2013-01-29 Ajc Tools & Equipment Cutting apparatus
US9199385B2 (en) 2007-12-12 2015-12-01 Ajc Tools & Equipment Cutting apparatus
US11286669B2 (en) * 2018-03-19 2022-03-29 Quail Manufacturing, LLC Shingle cutting machine

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JPS5225598B2 (en) * 1973-08-24 1977-07-08
JPS5442309U (en) * 1977-08-31 1979-03-22

Also Published As

Publication number Publication date
EP0073815A1 (en) 1983-03-16
SE8206373D0 (en) 1982-11-10
DK149267C (en) 1986-11-03
SE8206373L (en) 1982-11-10
GR75891B (en) 1984-08-02
JPH0530200B2 (en) 1993-05-07
DE3109501A1 (en) 1982-09-30
WO1982003206A1 (en) 1982-09-30
AU8333382A (en) 1982-10-06
DE3109501C2 (en) 1985-05-23
BR8206884A (en) 1983-03-01
CH660571A5 (en) 1987-05-15
JPS58500941A (en) 1983-06-09
AU550971B2 (en) 1986-04-10
SE455481B (en) 1988-07-18
DK149267B (en) 1986-04-14
AT390401B (en) 1990-05-10
US4527455A (en) 1985-07-09
ATA901182A (en) 1989-10-15
DK430482A (en) 1982-09-30

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