Classifications

• • E—FIXED CONSTRUCTIONS
  • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
  • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
  • E05B65/00—Locks or fastenings for special use
  • E05B65/10—Locks or fastenings for special use for panic or emergency doors

Definitions

• Safety when away from home means that the door is locked by a lock of accepted type, for instance a 7-lever tumbler lock, which cannot be unlocked without the aid of the proper key, neither from the inside, nor from the out-side. It is also possible to use a cylinder lock of non-pilferable type, but the door must then have a cylinder at its inward face, as well as at its outside face (i.e. there is no knob at the inside).
• the aim of the present invention is to satisfy the requirements of the insurance companies, of certain authorities, including the fire control people, as well as the user, concerning a device, which can be used with most kinds of cylinder locks, and certain types of spanjolette locks adapted to mount a locking cylinder.
• the device includes a knob, here called a safety knob, which is mounted at the inward face of the door instead of an inner lock cylinder. This knob will satisfy the requirements of the insurance companies and some authorities concerning safety when away from home, as well as the requirements of the user and of the fire control authorities concerning a rapid evacuation.
• a lock according to the invention includes a member rotatable within a limited angle of turning, actuating a displaceable bolt and the invention is characterized in that the safety knob is fitted at a driver, which is axially displaceable between two end positions, of which one permits engagement with the rotatable member, whereas the other implies disengagement from the latter, rotation of the member blocking re-engagement.
• the driver is prefecably provided with end position markings comprising at least one peripheral groove for cooperation with a catching device, the groove defining a breaking indication.
• the driver is advantageously provided with two periphe ral grooves adapted to co-operate with a spring loaded ball catching device for determining the end positions.
• the driver may be mounted in a journalling washer and is provided with a flange of sufficient size to cover at least two screws securing the washer.
• the washer is advantageously, at its inward face, provided with a recess into which a radially directed peg at the driver is introduceable, when the safety knob is brought to its other end position.
• the lock may include a lock member fitted at the inside of the door and operable by a key, the lock member by way of a spring loaded slide optionally engaging a groove in the driver.
• the slide may be provided with a recess for the reception of a radially directed peg at the driver, when the safety knob has been brought to its other end position, but the slide may also be formed, upon displacement of the driver, directly to engage a perihperal groove in the latter.
• Figure 1 shows a vertical section through a portion of a door provided with a lock according to the invention, and with the safety knob in engaged position
• Figure 2 shows the same section, but with the safety knob in withdrawn, disengaged position
• Figure 3 shows a section along line III - III in Figure 1
• Figure 4 shows a corresponding section along line IV - IV in Figure 2, and with the rotatable member turned 90°
• Figure 5 shows a side view of the safety knob, as viewed from the inward face of the door
• Figure 6 shows how a journalling washer for the safety knob is mounted at the outer ring of the lock cylinder
• Figures 7 a,b,c show portions around the rotatable member, with the safety knob engaged ("at home” position)
• Figures 8 d,e,f show the same portions with the safety knob retracted (“away from home” position)
• Figure 9 shows a section through the housing of a lock, modified with an extra lock at the inward face of the door.
• Figure 10 is a plan view
• FIG. 9 Figures 9 and 10, but belonging to a 'further modified embodiment.
• reference 10 denotes a portion of a door leaf, into which a lock housing 11 is recessed.
• the lock includes a rotatable member 12, adapted to receive the square-section peg of a handle, wich in a well known manner (not shown) is fitted in a bore 13 in the door leaf.
• the lock housing includes a further rotatable member 14, which in known manner (not shown) is actuated by a bolt and is operated by a key by way of a cylinder lock 15 accessible from the outward face of the door.
• the cylinder is provided with a projecting tongue 16, which constantly engages the hourglass-shaped recess in the rotatable member 14.
• the cylinder lock is in the usual manner secured to the lock housing by means of two screws 18, and is externally protected by an outer ring 17, which is held by screws 30, accessible from the inward face of the door, and at a later stage covered by a flange 28 at the safety knob.
• a knob 19 by means of which the rotatable member 14 may be activated.
• the aim is, however, that this knob, under certain circumstances may be put out of action, so it will prevent an undesirable unlocking of the door from its inside.
• the knob 19 is mounted upon a cylindrical driver 20, the distal end 20a of which is shaped for engagement with the opening 29 of the rotatable member 14.
• the length of the driver 20 permits it to satisfactorily engage the rotatable member, when the knob is pushed fully inwards.
• the driver is provided with two peripheral grooves 21 and 22, which co-operate with a spring loaded ball catch 23, and determine the two end positions of the axial displacement of the driver.
• the outward groove 22 is deeper than the inward one, and provides a breaking indication, which ensures that the retracted knob 19 will be severed from the driver if subjected to forcefull action. The driver will then remain un-accessible.
• the driver 20 is journalled in a washer 24, and is provided with a sidewardly directed peg 25. At the inward face of the journalling washer there is a short groove 36, adapted to receive the peg 25, when the safety knob is retrected. Hereby the driver will be non-rotately held in the retracted position.
• the journalling washer 24 is further provided with a through passage 27, having the same breadth as the peg 25. During the mounting of the driver the latter will be pushed through the journalling washer in a 180 turned position, i.e. with the peg 25 directed downwardly, so it can pass inwards through the passage.
• the knob is provided with a flange 28 (see also Figure 5), which has such an extension that it will cover the groove 27, as well as the screws holding the journalling washer 24.
• FIGS 3 and 4 show a section through the driver 20, as viewed towards the rotatable member 14.
• the characteristic shape of the opening 29 therein should be noted, as well as the corresponding distal end portion 20a of the driver.
• the lock cylinder is secured to the lock housing 11 by means of screws 18, and is outwardly covered by a ring 17, which, in turn, is secured by means of the screws 30 in a manner which is better shown in some of the following figures .
• Figure 3 shows the driver engaging the rotatable member 14, and Figure 4 shows the driver retracted therefrom, the rotatable member having been turned ninety degrees by means of a key.
• FIG. 5 shows the knob 19, as viewed towards the inward face of the door, and it is evident that the flange 28 has such an extension, that it covers the screws 30 as well as the groove 27.
• the screws 30 can advantageously be of the "one-way"-type, i.e. they can easily be screwed in, but cannot 'be screwed out again. Even if the driver should break at groove 20, it is impossible to remove the screws 30 without a considerable input of tools and labour.
• Figure 7 shows three different basic positions for a normal "at home” activity.
• the door is unlocked - the locking tongue 16 as well as the knob 19 remain in horizontal positions.
• Figure 7c shows how the lock has been locked by a key 31.
• the driver which is in engagement with the rotatable member will turn the knob to its vertical position. It is evident that it will be possible to unlock by means of a key from the outside in the situation illustrated in Figure 7b, as well as to unlock by means of the knob 19 in the situation illustrated in Figure 7c.
• Figure 8 shows some possible positions where the knob has been retracted from engagement whith the rotatable member.
• Figure 8d corresponds to unlocked position, i.e similar to Figure 7a, but with the key 31 introduced.
• the key has been turned 90° , so the bolt has been projected, while the knob remains in its horizontal position.
• the key has been turned back again, and the door is now locked, and cannot be opened, except by a key.
• the opening 29 in the rotatable member has been brought to a position, where it is impossible to reintroduce the driver axially, and the position of the peg 25 in the groove 26 prevents a rotation of the driver.
• an extra lock may be fitted at the inward face of the door, preferably actuable by the same key operating the main lock from outside the door.
• the "at home” convenience is then available by means of the knob, but in case of need the knob can be unlocked by a key from the inside.
• journalling washer 24a is adapted to receive a further lock 35 operable from the inside.
• the driver 36 of this lock cooperates, by way of a simple rotatable member 37, and a peg 38, with an up and down displaceable slide 39. This is biased by springs 40 towards an engagement with the driver 20.
• the end of the slide turned towards the driver is forked, so it can enclose the driver, and it is provided with a central notch 41 for the peg 25 at the driver.
• Figure 9 shows how the peg 25, also when the driver is pushed fully inwards, is located within the journalling washer 24a.
• the groove 42 in the latter has the same location as the groove 26 in the embodiment according to Figures 1 and 2, but here has an angular extension of
• the end part of the slide 39a is provided with an arcuate recess 48 mating with the groove 46.
• the recess has so narrow a gap, that the slide must be held in lifted position ( Figure 13), so the portions of the slide outside the gap may be brought to rest upon the slide.
• the knob When it is desirable to secure the lock in "away from home” position the knob is retracted until the snap ring 47 upon the driver comes into contact with the journalling washer 24b. The end portion of the slide 39a will slide along the driver and will finally snap into the groove 46. This extends all around the driver, so the knob 19 can rotate freely, but cannot be displaced axially. An unlocking can of course be brought about from the inside by means of a key, so the driver 20 can be rotated to the proper position and then be pushed into engagement with the rotatable member 14.
• the two last-mentioned embodiments will only be used when it is desirable to prevent an unintentional locking- in of a person having access to a door key.
• the embodiment according to Figures 9 - 11 is a pure safety application, which, hopefully, shall never be used, but may be required, for instance by the fire control authorities.
• the embodiment according to Figures 13 and 13 requires some activity each time an "away from home” securing shall be transferred into the convention! "at home” activity.

Landscapes

• Business, Economics & Management (AREA)
• Emergency Management (AREA)
• Lock And Its Accessories (AREA)
• Soil Working Implements (AREA)
• Catching Or Destruction (AREA)
• Portable Nailing Machines And Staplers (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=20348666

Family Applications (1)

Country Status (8)

Families Citing this family (5)

Family Cites Families (10)

• 1982
  • 1982-11-19 SE SE8206604A patent/SE440808B/sv not_active IP Right Cessation
• 1983
  • 1983-11-18 WO PCT/SE1983/000406 patent/WO1984002157A1/en not_active Application Discontinuation
  • 1983-11-18 DE DE19833390356 patent/DE3390356T1/de not_active Withdrawn
  • 1983-11-18 GB GB08417390A patent/GB2139281A/en not_active Withdrawn
  • 1983-11-18 EP EP83903836A patent/EP0125294A1/en not_active Withdrawn
• 1984
  • 1984-07-06 DK DK332784A patent/DK332784A/da not_active Application Discontinuation
  • 1984-07-17 NO NO842920A patent/NO842920L/no unknown
  • 1984-07-18 FI FI842887A patent/FI842887A0/fi not_active Application Discontinuation

Non-Patent Citations (1)

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