GB1588930A - Toggle lever fastening device - Google Patents

Toggle lever fastening device Download PDF

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Publication number
GB1588930A
GB1588930A GB5057677A GB5057677A GB1588930A GB 1588930 A GB1588930 A GB 1588930A GB 5057677 A GB5057677 A GB 5057677A GB 5057677 A GB5057677 A GB 5057677A GB 1588930 A GB1588930 A GB 1588930A
Authority
GB
United Kingdom
Prior art keywords
slots
arm
pivot
fastening device
longitudinal
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
GB5057677A
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.)
SCHEMM T
Original Assignee
SCHEMM T
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 SCHEMM T filed Critical SCHEMM T
Publication of GB1588930A publication Critical patent/GB1588930A/en
Expired legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B2/00—Friction-grip releasable fastenings
    • F16B2/02—Clamps, i.e. with gripping action effected by positive means other than the inherent resistance to deformation of the material of the fastening
    • F16B2/18—Clamps, i.e. with gripping action effected by positive means other than the inherent resistance to deformation of the material of the fastening using cams, levers, eccentrics, or toggles
    • F16B2/185—Clamps, i.e. with gripping action effected by positive means other than the inherent resistance to deformation of the material of the fastening using cams, levers, eccentrics, or toggles using levers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D45/00—Clamping or other pressure-applying devices for securing or retaining closure members
    • B65D45/32—Clamping or other pressure-applying devices for securing or retaining closure members for applying radial or radial and axial pressure, e.g. contractible bands encircling closure member
    • B65D45/34—Clamping or other pressure-applying devices for securing or retaining closure members for applying radial or radial and axial pressure, e.g. contractible bands encircling closure member lever-operated
    • B65D45/345—Lever-operated contractible or expansible band, the lever moving in the plane of the band
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B2/00—Friction-grip releasable fastenings
    • F16B2/02—Clamps, i.e. with gripping action effected by positive means other than the inherent resistance to deformation of the material of the fastening
    • F16B2/06—Clamps, i.e. with gripping action effected by positive means other than the inherent resistance to deformation of the material of the fastening external, i.e. with contracting action
    • F16B2/08—Clamps, i.e. with gripping action effected by positive means other than the inherent resistance to deformation of the material of the fastening external, i.e. with contracting action using bands

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Clamps And Clips (AREA)
  • Closures For Containers (AREA)
  • Fuses (AREA)

Abstract

The lever-operated clamping ring is secured on one clamping-ring end (8) by means of an attachment (1). The cheeks (2) of the attachment (1) have longitudinal slots (5) for a securing split pin and also have a boss (7) at one end of each longitudinal slot (5). Pivotally mounted on the attachment (1) is a clamping lever (4) with cheeks (9). The cheeks (9) of the clamping lever (4) likewise have longitudinal slots (11), which are considerably longer than the longitudinal slots (5) in the cheeks (2) of the attachment. The longitudinal slots (11) in the clamping lever (4) permit a large opening travel of the clamping-ring ends (8, 13) without the need to extend the said clamping lever. <IMAGE>

Description

(54) TOGGLE LEVER FASTENING DEVICE (71) We, THEODOR SCHEMM, a German Kommanditgesellschaft, of Papier mühle, 5952 Attendorn, Germany, 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: The present invention relates to a toggle lever fastening device which may be used for fastening profiled clamping rings, clamping bands, or clamping wires around lids or covers of casks and other packages.
Such fastening devices, of which one is described in German Gebrauchsmuster 6 942 649, comprise first and second members to be mounted respectively on two elements to be drawn and fastened together, one end of an arm being mounted on a pivot at one end of the first member, sidepieces of the arm having longitudinal slots in which a Fin can slide, two links each being mounted at one end of the pin and at the other end being pivotally mounted on the second member, the arm being pivotable between a closed position in which it extends from the pivot away from the second member and an open position in which a greater separation is allowed between the first and second members. In the prior device the arm also has longitudinal slots engageable by a securing peg to lock the arm to the first member in the closed position of the arm.
In accordance with the present invention the slots in which the pin slides are, at least along part of their length, superimposed over slots in sidepieces of the first member when the arm is in the closed position, whereby a peg can be passed through the slots in the arm and the slots in the first member to lock the arm relative to the first member.
Thus it is possible to use a single longitudinal slot in each of the sidepieces of the arm to provide for the sliding of the pin and the locking of the arm. These slots can be so.
arranged that in the closed position the separation of the pivot of the arm from the pivot of the links is small while upon opening a substantial movement of the links relative to the arm is possible to give a greater gap than normal between the first and second members of the device.
While secure locking of the arm is possible by means of a peg passed through the slots, it is preferred to provide protrusions on the first member to engate the slots in the arm when the arm is in the closed position. These protrusions, which may be of semi-circular cross-section and aproximately the same width as the slots in the arm, are conveniently arranged at the ends of the slots in the first member nearest the pivot.
An embodiment of the invention will be described below with reference to the accompanying drawings, in which: Fig. 1 shows a general view of a toggle lever fastening device for a clamping ring in the open condition, Fig. 2 shows a corresponding general view of the lever fastening device for a clamping ring in the half-closed condition, the closed position being indicated in broken lines, Fig. 3 is a section on the line III--III o Fig. 2, and Fig. 4 is a section on the line IV-IV of Fig. 2.
The toggle lever fastening device for a clamping ring in accordance with the invention comprises an attachment member 1 with a generally U-shaped cross-section, on whose sidepieces 2 which stand opposite one another are formed on the one hand pivot lugs 3 for a clamping arm or lever 4 and on the other hand projections 5' in which are formed longitudinal slots 5 for receiving a securing peg 6.
At the end closer to the pivot lugs 3 of each longitudinal slot 5 a domed outward protrusion 7 with a semi-circular cross-section is provided. The attachment member 1 is connected in the usual manner with one end 8 of a clamping ring in the form of a wire, which is not shown in detail. The protrusion 7 is drawn out approximately by the thickness of the sidepiece 2.
The clamping lever 4 also has a U-shaped cross-section and has two lever sidepieces 9 lying opposite one another which are mounted in thc pivot lugs 3 by means of a pivot pin 10.
Moreover longitudinal slots 11 are present in such a form that in the closed condition of the clamping lever (shown in broken lincs in Fig.
2) the end of the longitudinal slot 11 lying remote from the pivot pin 10 lies within the open area of the longitudinal slot 5 a short distance from its end and that the end of the longitudinal slot 11 closer to the pivot pin 10 extends for a substantial distance beyond the longitudinal slot 5. The longitudinal slots 11 thus also extend beyond the end edges of the projections 5' so that the ends of the longitudinal slots project freely above the upper edges of the sidepieces 2.
A generally U-shaped link member 12 is fastened to the other end 13 of the wire clamping ring and has pivot lugs 14 for receiving a pivot pin 15 on which two links 16 are pivoted. The links 16 are connected at their free ends by a pivot pin 17 which is guided in the longitudinal slots 11.
Figure 1 shows the clamping ring in the opened condition, in which the pivot pin 17 is at a large distance from the pivot pin 10.
On this account a very large open gap between the ends 8 and 13 of the clamping ring is obtained. Upon swinging of the clamping lever 4 in the closing direction the pivot pin 17 moves within the longitudinal slots 11 towards the pivot pin 10, as soon as the upright position of the clamping lever is passed. Thus the lever arm between the pivot pins 10 and 17 becomes smaller, so that the clamping lever 4 has a mechanical advantage of 2:1 for the closing movement. This is important so that the closure force does not increase unduly.
During further closure of the clamping lever the longitudinal slots 11 come into coincidence with the longitudinal slots 5 so that the domed protrusions 7 snap into the longitudinal slots 11. Thus the clamping lever is held by a snap fastening in the closed position. This means an additional fastening of the clamping lever.
A conventional securing peg 6 can be pushed through the longitudinal slots 5 and 11. The conventional securing peg 6 has a head plate 18 as well as hooked-back noses 19 and 20.
The noses 19 have a separation from the head plate 18 corresponding to the wall thickness of the clamping lever. These noses 19 should normally snap into the ends of the slot of a lever sidepiece. According to the invention the noses 19 snap on the one hand into the end of the longitudinal slot 11 remote from the pivot pin 10 and on the other hand into the domed protrusion 7 which lies opposite. Thus the securing peg is held securely.
The longitudinal slots 11 make possible without lengthening of the clamping lever 4 a very large opening gap between the ends 8 and 13 of the clamping ring. There is achieved by means of these longitudinal slots a more secure fastening of the clamping lever in conjunction with the protuberances 7. Moreover the securing peg 6 is securely held by one end of a longitudinal slot 11 and by one domed protrusion 7. Thus the invention produces a surprising improvement of the operation of a clamping lever, without additional constructional parts with an increased consumption of material being necessary.
WHAT WE CLAIM IS:- 1. A toggle lever fastening device, comprising first and second members to be mounted respectively on two elements to be drawn and fastened together, one end of an arm being mounted on a pivot at one end of the first member, sidepieces of the arm having longitudinal slots in which a pin can slide, two links each being mounted at one end on the pin and at the other end being pivotally mounted on the second member, the arm being pivotable between a closed position in which it extends from the pivot away from the second member and an open position in which a greater separation is allowed between the first and second members, the slots in the sidepieces of the arm being, at least along part of their length, superimposed over slots in sidepieces of the first member when the arm is in the closed position, whereby a peg can be passed through the slots in the arm and the slots in the first member to lock the arm relative to the first member.
2. A fastening device according to claim 1, wherein protrusions are provided on the first member to engage the slots in the arm when the arm is in the closed position.
3. A fastening device according to claim 1 or 2, wherein the protrusions are at the ends of the slots in the first member nearest the pivot.
4. A fastening device according to claim 2 or 3, wherein the protrusions are of semicircular cross-section and approximately the same width as the slots in the arm.
5. A fastening device according to any preceding claim, wherein the ends of the slots in the arm remote from the pivot are at substantially the same distance from the pivot as the ends of the slots in the first member re- mote from the pivot.
6. A fastening device according to any preceding claim, wherein the ends of the slots in the arm nearest the pivot are closer to the pivot than the ends of the slots in the first member nearest the pivot.
7. A fastening device according to any preceding claim, wherein a peg is passed through the slots in the arm and the slots in the first member, the peg having a head and a body with resilient barbs which allow the peg to be passed into the slots but obstruct movement of the peg through the slots in the other direction by engagement with a sidepiece of the arm or the first member.
8. A fastening device according to claim 7, wherein the ends of the barbs which engage
**WARNING** end of DESC field may overlap start of CLMS **.

Claims (10)

  1. **WARNING** start of CLMS field may overlap end of DESC **.
    in thc pivot lugs 3 by means of a pivot pin 10.
    Moreover longitudinal slots 11 are present in such a form that in the closed condition of the clamping lever (shown in broken lincs in Fig.
    2) the end of the longitudinal slot 11 lying remote from the pivot pin 10 lies within the open area of the longitudinal slot 5 a short distance from its end and that the end of the longitudinal slot 11 closer to the pivot pin 10 extends for a substantial distance beyond the longitudinal slot 5. The longitudinal slots 11 thus also extend beyond the end edges of the projections 5' so that the ends of the longitudinal slots project freely above the upper edges of the sidepieces 2.
    A generally U-shaped link member 12 is fastened to the other end 13 of the wire clamping ring and has pivot lugs 14 for receiving a pivot pin 15 on which two links 16 are pivoted. The links 16 are connected at their free ends by a pivot pin 17 which is guided in the longitudinal slots 11.
    Figure 1 shows the clamping ring in the opened condition, in which the pivot pin 17 is at a large distance from the pivot pin 10.
    On this account a very large open gap between the ends 8 and 13 of the clamping ring is obtained. Upon swinging of the clamping lever 4 in the closing direction the pivot pin 17 moves within the longitudinal slots 11 towards the pivot pin 10, as soon as the upright position of the clamping lever is passed. Thus the lever arm between the pivot pins 10 and 17 becomes smaller, so that the clamping lever 4 has a mechanical advantage of 2:1 for the closing movement. This is important so that the closure force does not increase unduly.
    During further closure of the clamping lever the longitudinal slots 11 come into coincidence with the longitudinal slots 5 so that the domed protrusions 7 snap into the longitudinal slots 11. Thus the clamping lever is held by a snap fastening in the closed position. This means an additional fastening of the clamping lever.
    A conventional securing peg 6 can be pushed through the longitudinal slots 5 and 11. The conventional securing peg 6 has a head plate 18 as well as hooked-back noses 19 and 20.
    The noses 19 have a separation from the head plate 18 corresponding to the wall thickness of the clamping lever. These noses 19 should normally snap into the ends of the slot of a lever sidepiece. According to the invention the noses 19 snap on the one hand into the end of the longitudinal slot 11 remote from the pivot pin 10 and on the other hand into the domed protrusion 7 which lies opposite. Thus the securing peg is held securely.
    The longitudinal slots 11 make possible without lengthening of the clamping lever 4 a very large opening gap between the ends 8 and 13 of the clamping ring. There is achieved by means of these longitudinal slots a more secure fastening of the clamping lever in conjunction with the protuberances 7. Moreover the securing peg 6 is securely held by one end of a longitudinal slot 11 and by one domed protrusion 7. Thus the invention produces a surprising improvement of the operation of a clamping lever, without additional constructional parts with an increased consumption of material being necessary.
    WHAT WE CLAIM IS:- 1. A toggle lever fastening device, comprising first and second members to be mounted respectively on two elements to be drawn and fastened together, one end of an arm being mounted on a pivot at one end of the first member, sidepieces of the arm having longitudinal slots in which a pin can slide, two links each being mounted at one end on the pin and at the other end being pivotally mounted on the second member, the arm being pivotable between a closed position in which it extends from the pivot away from the second member and an open position in which a greater separation is allowed between the first and second members, the slots in the sidepieces of the arm being, at least along part of their length, superimposed over slots in sidepieces of the first member when the arm is in the closed position, whereby a peg can be passed through the slots in the arm and the slots in the first member to lock the arm relative to the first member.
  2. 2. A fastening device according to claim 1, wherein protrusions are provided on the first member to engage the slots in the arm when the arm is in the closed position.
  3. 3. A fastening device according to claim 1 or 2, wherein the protrusions are at the ends of the slots in the first member nearest the pivot.
  4. 4. A fastening device according to claim 2 or 3, wherein the protrusions are of semicircular cross-section and approximately the same width as the slots in the arm.
  5. 5. A fastening device according to any preceding claim, wherein the ends of the slots in the arm remote from the pivot are at substantially the same distance from the pivot as the ends of the slots in the first member re- mote from the pivot.
  6. 6. A fastening device according to any preceding claim, wherein the ends of the slots in the arm nearest the pivot are closer to the pivot than the ends of the slots in the first member nearest the pivot.
  7. 7. A fastening device according to any preceding claim, wherein a peg is passed through the slots in the arm and the slots in the first member, the peg having a head and a body with resilient barbs which allow the peg to be passed into the slots but obstruct movement of the peg through the slots in the other direction by engagement with a sidepiece of the arm or the first member.
  8. 8. A fastening device according to claim 7, wherein the ends of the barbs which engage
    the side-piece of the arm or the first member are spaced from. the head of the peg by a distance substantially equal to the thickness of a side-piece of the arm.
  9. 9. A toggle lever fastening device substantially as herein described with reference to the accompanying drawings.
  10. 10. An assembly comprising a band of material and a fastening device according to any preceding claim, whercin the two ends of the band are the two elements on which the first and second members of the fastening device are mounted.
GB5057677A 1976-12-04 1977-12-05 Toggle lever fastening device Expired GB1588930A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19762655111 DE2655111B2 (en) 1976-12-04 1976-12-04 Lever clamping ring lock, especially for closing the lids of lidded containers

Publications (1)

Publication Number Publication Date
GB1588930A true GB1588930A (en) 1981-04-29

Family

ID=5994733

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5057677A Expired GB1588930A (en) 1976-12-04 1977-12-05 Toggle lever fastening device

Country Status (7)

Country Link
AT (1) AT364641B (en)
CH (1) CH622860A5 (en)
DE (1) DE2655111B2 (en)
FR (1) FR2372981A1 (en)
GB (1) GB1588930A (en)
IT (1) IT1089760B (en)
SE (1) SE432404B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3162825D1 (en) * 1980-12-16 1984-04-26 Schemm Fa Theodor Clamping-ring closure with a strap for a barrel
DE8206497U1 (en) * 1982-03-09 1983-07-07 Fa. Theodor Schemm, 5952 Attendorn Tension lever lock with a wire for a barrel
DE3503539C2 (en) * 1985-02-02 1987-03-19 Fa. Theodor Schemm, 5952 Attendorn Pivoting clamping lever for a locking device on a clamping ring
US4629893A (en) * 1985-03-29 1986-12-16 Siemens Gammasonics, Inc. Device for detachably securing a collimator to a radiation detector

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2265167A (en) * 1938-12-03 1941-12-09 American Can Co Container
DE1104425B (en) * 1957-04-04 1961-04-06 Mauser Kg Secured lever lock for tension rings
US3261632A (en) * 1963-12-09 1966-07-19 Edward E Schaefer Lever lock construction for split clamping ring
CH483345A (en) * 1967-12-04 1969-12-31 Luedi & Cie Ag Seal arranged on a locking device
NL163008C (en) * 1974-11-08 1980-07-15 Moeller & Co Metallwaren GAG DEVICE.

Also Published As

Publication number Publication date
DE2655111B2 (en) 1980-02-28
IT1089760B (en) 1985-06-18
DE2655111A1 (en) 1978-06-15
ATA867577A (en) 1981-03-15
CH622860A5 (en) 1981-04-30
SE7713701L (en) 1978-06-05
SE432404B (en) 1984-04-02
AT364641B (en) 1981-11-10
FR2372981B1 (en) 1982-05-14
FR2372981A1 (en) 1978-06-30
DE2655111C3 (en) 1980-10-30

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee