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Patent Searching and Data


Title:
ROUTER JIG FOR DOOR LOCK
Document Type and Number:
WIPO Patent Application WO/2021/250112
Kind Code:
A1
Abstract:
The present invention relates to a router jig to create holes in the sides of a door sides for a spindle and/or key and recess/es in the door edge for a lock body. The jig comprises a front plate 20 having a hollow cavity A to create a router template to cut one or more of said recesses in the door edge, and a pair of spaced rectangular side plates 30A,30B depending from the front plate, each side plate having one or more hollow cavities 31A,31B and 32A,32B to create a router template to cut said holes.

Inventors:
WEIR BERNARD JAMES O'KEEFFE (GB)
Application Number:
PCT/EP2021/065497
Publication Date:
December 16, 2021
Filing Date:
June 09, 2021
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
WEIR BERNARD JAMES OKEEFFE (GB)
International Classes:
B27F5/02; B23Q9/00; B27F5/12
Domestic Patent References:
WO2000003848A12000-01-27
Foreign References:
US6112783A2000-09-05
GB2247430A1992-03-04
US3221784A1965-12-07
DE2454729A11976-05-20
DE19541235A11996-09-05
US8016005B12011-09-13
US20080210338A12008-09-04
US6182371B12001-02-06
US4914822A1990-04-10
Attorney, Agent or Firm:
VENTURE PROOF LIMITED (GB)
Download PDF:
Claims:
CLAIMS

1. A router jig to create holes in the sides of a door sides for a spindle and/or key and recess/es in the door edge for a lock body comprising: a) front plate having a hollow cavity to create a router template to cut one or more of said recesses in the door edge, and b) a pair of spaced rectangular side plates depending from the front plate, each side plate having one or more hollow cavities to create a router template to cut said holes.

2. A router jig according to claim 1, wherein the front plate is formed of two opposing elongate components which can be releasably secured at variable widths apart to adjust the width size of the hollow cavity.

3. A router jig according to claim 2, wherein each elongate component includes a projection at one first end to slide in and out of a recess at a second end of an opposing projection.

4. A router jig according to claim 1, 2 or 3, wherein said front plate include a pair of end stops which can be releasably secured to the front plate at varying lengths apart to adjust the length of the hollow cavity.

5. A router jig according to claim 4, wherein the ends stops can be secured at variable positions relative to a first centre line defining the centre of a lock square spindle aperture.

6. A router jig according to claim 5, wherein measurement means is provided to secure the end stops at measured distances from the centreline.

7. A router jig according to claim 5 or 6, wherein each side plate has a first hollow cavity centred on the first centre line to provide a router template to cut a spindle hole in both sides of the door.

8. A router jig according to claim 7, wherein each side plate has a second hollow cavity in a slider which can be releasably secured at variable positions on a guide towards or away from the first annular hollow cavity, and centred on a second line centred on the first annular hollow cavity, said second hollow cavity providing a router template to cut a key hole in one or both sides of the door.

9. A router jig according to claim 8, wherein measurement means is provided to secure the slider at measured distances from the first annular hollow cavity.

10. A router jig according to claim 8 or 9, wherein a number of sliders are each releasably connectable to the guide are provided each with a different shape second hollow cavity to cut different shapes of keyholes.

11. A router jig according to claim 8, 9, or 10, wherein each side plate in substantially 101mm wide and has its first and second hollow cavity centres spaced substantially 44mm from one side plate edge and substantially 57mm from the opposite side edge.

12. A router jig according to claim 11, wherein each side plate is releasably connected to the front plate on either side plate edge so that, depending on its orientation, the first and second cavity centres are positioned 44 or 57mm from the front plate.

Description:
TITLE: Router Jig for Door Lock

The present invention relates to a router jig for fitment of locks to door, especially for sashlocks, but also for other locks such as deadlocks and euro locks.

It is common practice to install locks such as sashlocks (and other locks) on external and internal doors. An example of such a known lock 1 is shown in Figure 1. In Figure 1 the lock has a lock body 2 and a front end 3. In order to install the lock, a deep recess needs to be made in a door edge to accommodate the lock body 2, and the size of the lock body is defined by the Case Depth” A and the “Case Height” C as shown in the Figure 1. A larger shallow recess/es needs to be made in the door edge adjacent the mouth of the deep recess to accommodate the Front End 3 (and sometimes a front end face plate which sits on the front end) with a “Forward Length” E and “Forward Width” F.

In addition holes need to be created to accommodate a door handle square- shaped spindle passing through both sides of the door and through the lock square spindle aperture 4, and to accommodate a key passing through one or both sides of the door and through the lock key aperture 5. These holes are both on a centre line defined as the Backset B (usually 44mm or 57 mm), and these holes are spaced apart from their Centres by a distance D.

Traditionally the task of fitting such sashlocks required a skilled carpenter using drills and chisels which is very labour intensive. More recently it has been known to provide router jigs of various types to cut the deep recess and router jigs to cut the shallow recess in the door edge, and router jigs to cut the shaft and key holes in the sides of the door. However it requires a different jig to be set up on a door for each different task which still adds to the length of the task.

The invention seeks to provide a single jig to make the installation of locks on door easier and quicker.

According to the present invention there is provided a router jig to create holes in the sides of a door sides for a spindle and/or key and recess/es in the door edge for a lock body comprising: a) front plate having a hollow cavity to create a router template to cut one or more of said recesses in the door edge, and b) a pair of spaced rectangular side plates depending from the front plate, each side plate having one or more hollow cavities to create a router template to cut said holes.

Preferably the front plate is formed of two opposing elongate components which can be releasably secured at variable widths apart to adjust the width size of the hollow cavity. Preferably each elongate component includes a projection at one first end to slide in and out of a recess at a second end of an opposing projection. Preferably said front plate include a pair of end stops which can be releasably secured to the front plate at varying lengths apart to adjust the length of the hollow cavity. Preferably the ends stops can be secured at variable positions relative to a first centre line defining the centre of a lock square spindle aperture. Preferably measurement means is provided to secure the end stops at measured distances from the centreline.

Preferably each side plate has a first hollow cavity centred on the first centre line to provide a router template to cut a spindle hole in both sides of the door.

Preferably each side plate has a second hollow cavity in a slider which can be releasably secured at variable positions on a guide towards or away from the first annular hollow cavity, and centred on a second line centred on the first annular hollow cavity, said second hollow cavity providing a router template to cut a key hole in one or both sides of the door. Preferably measurement means is provided to secure the slider at measured distances from the first annular hollow cavity. Preferably a number of sliders are each releasably connectable to the guide are provided each with a different shape second hollow cavity to cut different shapes of keyholes. Preferably each side plate in substantially 101mm wide and has its first and second hollow cavity centres spaced substantially 44mm from one side plate edge and substantially 57mm from the opposite side edge. Preferably each side plate is releasably connected to the front plate on either side plate edge so that, depending on its orientation, the first and second cavity centres are positioned 44 or 57mm from the front plate.

An embodiment of the invention will now be described with reference to the accompanying drawings in which:

Figure 2 shows a side perspective view,

Figure 3 shows a plan view of the front plate Figure 4 show a plan view of each side plate Figure 5 shows a variety of different lock shapes

Referring to the drawings there is shown a door lock jig 10 to create holes in the sides of a door sides for a spindle and/or key, and recesses in the door edge for a lock front end lock body such as shown in Figure 1.

Jig 10 has a front plate 20 (see Figures 2 and 3) for placement against the edge of a door where a lock needs to be fitted. Front plate 20 has a hollow cavity “A” to create a router template to cut one or more of said recesses in the door edge. Front plate 20 is formed of two mirror image opposing elongate components 20A,20B which can be releasably secured at variable widths apart to adjust the width size of the hollow cavity A. Preferably each elongate component includes a projection 21 A, 2 IB at one first end to slide in and out of a recess 22B,22A at a second end of an opposing projection. Lock bolts (not shown) pass through and can slide in slots 23A,23B in each projection into the opposing component 20B,20A to releasably secure the components 20A,20B at variable widths apart to adjust the width size of the hollow cavity.

Front plate components 20A,20B include a pair of end stops 24A,24B (which slide in tracks in the elongate members) which can be releasably secured (e.g. using lock bolts) to the front plate at varying lengths apart to adjust the length of the hollow cavity A. Preferably the end stops can be secured at variable positions relative to a centre line/plane “X-X” defining the centre of a lock square spindle aperture. Preferably measurement means such as a ruler 25A,25B is provided to secure the end stops at measured distances from the centreline.

A pair of spaced mirror image rectangular side plates 30A,30B depend from the front plate, each side plate has first and second hollow annular cavities, such as two cavities 31 A, 3 IB and 32A,32B to create a router template to cut spindle and keyholes holes respectively.

First hollow cavities 31 A, 3 IB are centred on the centre line/plane X-X to provide a router template to cut a spindle hole in both sides of the door. Second hollow cavities 32A,32B are each in a slider 33A,33B which can be releasably secured at variable positions on a guide track 34A,34B towards or away from the first annular hollow cavity 31A,31B respectively, and centred on a line Y-Y centred on the first annular hollow cavity. The second hollow cavities provide a router template to cut a key hole in one or both sides of the door. Preferably measurement means such as ruler 35A,35B, is provided to secure the sliders at measured distances from the first hollow cavities 31 A, 3 IB respectively. Although slider 33A,33B is shown with annular cavities 31 A, 3 IB, a number of different sliders may be releasably connectable to the guide track 34A,34B and each with a different shaped second hollow cavity to cut different shapes of keyholes as shown in Figure 5.

Preferably each side plate 30A,30B is substantially 101mm wide and has its first and second hollow cavity centres spaced along line Y-Y substantially 44mm from one side plate edge and substantially 56mm from the opposite side edge. Each side plate 30A,30B is releasably connected to the front plate 20 on either side plate edge so that depending on its orientation the first and second cavity centres are positioned on line Y-Y 44mm or 57mm from the front plate 20.

The side plates 30A,30B can be secured towards or away from each other using lock bolts (not shown) which pass through and can slide in slots 26 in each plate component 20A,20B into the respective side plates 30A,30B to releasably secure the side plates at variable widths apart. If desired screw clamps with rotatable knobs 36 are provided to secure the jig tightly around a door edge.

The jig of the invention works as follows.

The required lock is selected and the side walls put into the desired orientation relative to the front plate 20 so that the centre line Y-Y is either 44mm or 57mm from the front plate depending on whether the Backset B (Figure 1) is 44mm or 57mm.

Then the front plate 20 opposing elongate components 20A,20B are adjusted to a width apart to create a cavity A to create a router temple to create a shallow recess to accommodate Front end 3 with a “Forward Length” E and “Forward Width” F. Because a router with its guide bush around the cutter meaning that the cutter is always slightly spaced in from the edge of the template, the router template may be created by placing packing strips along the side edges of the Front end 3 of the lock, and then adjusting the width of the elongate components. The length of the cavity A can be set by positioning the end stops 24A,24B using rulers 25A,25B according to the lock manufacturers dimensions and as adjusted for guide bush size. This creates the exact template to cut a shallow recess for the Front end 3. Jig 10 is placed on the edge of the door to which the lock is to be fitted, with the centreline/plane X-X centred where the lock spindle is to be positioned. The two side edges can be drawn together or spaced apart (using bolts in slots 26) to accommodate the width of the door, and the clamps 36 tightened to secure the jig to the door. The shallow recess for the Front end 3 can then be cut.

This process may be repeated to cut the recess for the lock body 2 in the edge of the door with the required case height C and case depth B (see Figure 1). Some routers may not operate to sufficient plunge depth to complete cutting the lock body recess, and this task may need to be completed using carpenter’s chisels and the like.

Sliders 33A and 33B (selected fro the range in Figure 5 to create the keyhole for a given lock) are then positioned on track 34A so that the centre of hollow cavities 32A,32B are positioned a Centres distance D (See Figure 1) using rulers 35A,35B according to manufacturers’ instructions. The holes are then cut for the spindle in the sides of the door using the first hollow cavities 31 A, 3 IB as template for the router, and holes cut for the key hole in the side/e of the door using the Second hollow cavities 32A,32B.

The jig can then be removed and the lock fitted. Some lock have curved (rather than square) top and bottom front ends 3, in which case inserts 27 (see Figure 3) with curved edges may be fitted to end stops 24A,24B to make curved top and bottom ends to the shallow recess.

The invention may take a form different to that specifically described above.

Further modifications will be apparent to those skilled in the art without departing from the scope of the present invention