AU594577B2

AU594577B2 - A lockable catch

Info

Publication number: AU594577B2
Application number: AU17536/88A
Authority: AU
Inventors: Donald Edward Baty
Original assignee: EOE NO 110 Pty Ltd
Current assignee: Stegbar Pty Ltd
Priority date: 1987-07-30
Filing date: 1988-06-09
Publication date: 1990-03-08
Anticipated expiration: 2008-06-09
Also published as: AU1753688A

Description

59457 S F Ref: 330V FORM COMMONWEALTH OF AUSTRALIA PATENTS ACT 1952 COMPLETE SPEC;FICATION

(ORIGINAL)

FOR OFFICE USE: Class Int. Class *.Application Number: 0000 ~oodged: i ty: 0 0 Related Art: P13434 30 July 1987 Accepted: Published: Name and Address g a. of Applicant: :OActual Inventor: of Address for Service: Leii-e213 2-,2-00-Qu e~en-S~tr-e-e-t- Melbourne Victoria 3000

AUSTRALIA

V *.ii r' Donald Edward Baty, Spruson Ferguson, Patent Attorneys, Level 33 St Martins Tower, 31 Market Street, Sydney, New South Wales, 2000, Australia Complete Specification for the invention entitled: A LOCKABLE CATCH The following statement is a full description of this invention, including the best method of performing it known to me/us REPRINT OF RECEIP 5815/2 0 00 "7,19 09/06/ C38 5805/2 2 The present invention relates to catches and more particularly but not exclusively to sliding door and window catches.

Currently available sliding door and window catches, including catches for double hung windows, either act as a snib catch or alternatively a lockable catch. Accordingly if a sliding door or window is to be locked closed as well as being provided with a snib catch, it is necessary to provide two pieces of hardware. Still further, the catches have not been designed such that single operation will actuate the catch and cause sliding movement of the door or window.

It is the object of the present invention to overcome or substantially ameliorate the above disadvantages.

There is disclosed herein a catch for a door or window, said catch comprising: a body adapted to be mounted on a door or window member; '5 a catch tongue member movably mounted on the body so as to be movable in a predetermined direction between a locking extended position partly protruding from said body, and a retracted position; means biasing the tongue member to the extended position thereof; and an operator manipulable means operatively connected to said tongue member to cause movement thereof from the extended position to be retracted position, and wherein said means includes a lever which is pivotally mounted on said body or is adapted for pivotal mounting to said door or window member so as to be pivotable about an axis transverse of the direction of movement of said member and generally parallel to the plate of the door or window.

A preferred from of the present invention will now be described by way of example with reference to the accompanying drawings, wherein: SFigure 1 is a schematic part exploded perspective view of a window or door catch; and Figure 2 is a schematic part sectioned side elevation of the catch of Figure 1; In the accompanying drawings there is schematically depicted a catch to be mounted on a sliding door or window or a double hung window.

The catch 10 as illustrated in Figure 1 is mounted in a horizontally sliding sash stile 12 and is positioned to engage the window frame member 12. The catch 10 includes a body 13 which has a hollow 14 slidably 3 /',,eceiving catch tongue member 15. A backing plate 16 is secured to the 2a body 13 so that the tongue member 15 is slidably held therebetween. The tongue member 15 has a leading portion !7 which is movable from an extended 0 0* 000000 000 0 KLN/1609b locking position, engaging the frame member 12, to a retracted position clearing the frame member 12. Preferably, the frame member 12 would be provided with one or more barbs 18 to engage the leading portion 17.

The tongue member 15 is provided with an aperture 19 which co-operates with an aperture 20 in the backing plate 16, to receive a spring 21. The spring 21 fits over a projection 22, extending into the aperture 20, and biases the tongue 15 to move the leading portion 17 to its extended position.

The backing plate 16 is provided with two countersunk holes 23 which receive screws 24. The screws 24 engage a backing strip 25 located within the sash stile 11. It should also be noted that access holes 26 are provided in the tongue member 15 to enable an installer to gain access to the screws 24, when the tongue member 16 is in the retracted position.

Access holes 27 are similarly provided in the body 13. Plugs 28 close the 1 5 holes 27.

The stile 11 is provided with a flange 28 terminating with a lobe 29 of generally circular transverse cross-section. Pivotally mounted on the lobe 29 is a handle 30 having a recess of circular cross-section encompassing the lobe 29. The handle 30 further has a finger engaged portion 31 manipulated by a user of the catch 10. The handle 30 is also provided with eyelet portions 32 which provide passages 33 through which a pivot pin 34 passes. The pivot pin 34 also passes through an eyelet portion 35 formed in the rear of the tongue member 15. Accordingly upon a user depressing the portion 31 will cause pivoting of the handle 30 and therefore retraction of the tongue member 15. The handle 30 has a surface 42 which abuts the surface 43 of the stile 11 to define the extended portion of the tongue member 16.

The body 13 is provided with a cavity to receive a lock cylinder barrel 36 which is operated by means of a key 37. This particular cavity, if not filled by the barrel 36, may be closed by a plug 38. The inner end of the barrel 36 is provided with a projection eccentrically mounted with respect to the longitudinal axis of the barrel 36. This projection is engaged within an aperture 39 formed in the tongue member 15. In the locked position, this projection engages the forward face 40 of the aperture 39 to prevent movement of the tongue member 15 to the retracted position. In the unlocked position, the projection is moved to a position spaced from the face 40 thereby permitting movement of the tongue member to the retracted position.

It is an advantage of the above described preferred embodiment, that DG:0793t 3 the catch 10 may be used as a snib catch, or alternatively provided with a lock barrel and associated key, so that the catch 10 becomes lockable.

Still further, the catch 10 is operated by a single movement. The user merely depresses the portion 31, thereby moving the locked tongue 15 to the retracted position, while continued force applied to that portion 31 will cause sliding movement of the window door or panel.

To install the catch 10, the backing strip 25 is loosely secured to the backing plate 16, and is slid into the cavity 44 of the stile 11. The backing strip 25 has an elongated rig 45 which slidably engages the slot 46. The screws 24 also pass along the slot 46 during installation.

Simultaneously the lobe 29 is located in the passage 41. The catch 10 can then be moved to the desired location, whereat, the tongue member 16 is retracted thereby exposing the screws 24. The screws 24 are then tightened to secure the catch 10 in position. The plugs 28 are then inserted.

*S 0 o o DG:0793t -4-

Claims

2. The catch of claim 1 wherein said body has a recess within which said catch member is slidably received, and said catch further includes a backing plate retaining said tongue in said recess.
3. The catch of claim 1 or 2 further including a cylindrical lock barrel mounted in said body and operable to retain said tongue in its extended position.
4. The lock of claim 2, or claim 3 when appended to claim 2, further including a backing strip to engage the door or window, to retain the latch in a position fixed to the door or window. The catch of claim 4 wherein said backing plate has one or more S apertures through which fasteners pass to engage said backing strip.
6. A catch substantially as hereinbefore described with reference to the accompanying drawings. DATED this SEVENTH day of DECEMBER 1989 ACI International Limited Patent Attorneys for the Applicant oSPRUSON FERGUSON _KLN/1609b