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GB2240744A - Scribe & counter scribe joint - Google Patents

Scribe & counter scribe joint Download PDF

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Publication number
GB2240744A
GB2240744A GB9003485A GB9003485A GB2240744A GB 2240744 A GB2240744 A GB 2240744A GB 9003485 A GB9003485 A GB 9003485A GB 9003485 A GB9003485 A GB 9003485A GB 2240744 A GB2240744 A GB 2240744A
Authority
GB
United Kingdom
Prior art keywords
joint
cut
cutter
slot
female
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.)
Withdrawn
Application number
GB9003485A
Other versions
GB9003485D0 (en
Inventor
Raymond Charles Jeffer Cooksey
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB9003485A priority Critical patent/GB2240744A/en
Publication of GB9003485D0 publication Critical patent/GB9003485D0/en
Publication of GB2240744A publication Critical patent/GB2240744A/en
Withdrawn legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B27WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27FDOVETAILED WORK; TENONS; SLOTTING MACHINES FOR WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES
    • B27F1/00Dovetailed work; Tenons; Making tongues or grooves; Groove- and- tongue jointed work; Finger- joints

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Mechanical Engineering (AREA)
  • Forests & Forestry (AREA)
  • Joining Of Corner Units Of Frames Or Wings (AREA)

Abstract

A scribe and counter scribe joint enables a joint to be made between two members in either an L, T or X configuration. A slot SH-1, SD1 formed in the end of one member receives a bridge BH-1, BD1 formed in the side of the other member. The slot and a recess mould forming the bridge can be cut using the same straight cutter C-1. The cutter can be pivoted by 90 degrees to cut the slot. Alternatively, a separate larger cutter can be used to cut the slot. A dowel can be inserted in holes DH-1, DH-2. The area designated as MH-1 / MD-1 is the maximum area where the recess moulding can be placed. The area designated as RD-1 / RH-1 is the area of any step (rebate) in the material. The area shown as BH-1 being the permanent bridging piece which is the part of the material left in after the V shaped recess mould has been cut out of the material to form an air/dust/weatherproof joint plus giving a positive location point for each member. The members to be joined may have rebated, flush or grooved edges. If the member is grooved, the bridge may be formed by a separate inserted piece (Drawing 6/9). <IMAGE>

Description

TRUE UNIVERSAL SCRIBE & COUNTER SCRIBE JOINT This invention relates to a method of making an air, dust or weatherproof joint between either square or rectangular sectional components where either the edges of the component parts are shaped (moulded edge), stepped (rebated),flush (90 degree edges) or of grooved material.The joint between any of these three combinations can be made with a single or multiple straight fluted circular cutter(s).
The component parts can be joined at 90 degrees to each other either in a T,L,or X crucifix configuration enabling the manufacture of square or rectangular frames with whatever cross members are required The material can be square or of rectangular shape and of any size so long as the the uprights and or any cross members are of a uniform thickness in order for the frame work to be manufactured accurately.
The frame members can be of stepped section ,flush or grooved with any shape or moulding on the inner opposing face side of the step or groove in the material ,providing it is of a size to be determined by the actual thickness and depth of the material plus the size of any radius cutter used to cut the joint.
The joint between the male and female component parts can be cut with a sinqle stsaight fluted circular cutter.
Where a permanent bridge is cut into the material with the straight fluted cutter Drawing 2/9 Fig C-i the joint could be secured where an optional pin or dowel hole can be pre-drilled through the face of the material Fig.DH-1 DH-2 and a dowel inserted and driven through the material securing both pieces of the material at 90 Degrees. The hole in the (male) piece of the material Fig.DH-2 would be slightly off centre to the hole in the (female) section of the material in order to have a clamping effect.
Alternatively frame members could be drilled and fixed with traditional fixings through the outside face edge of the material.
Where the material is out of grooved section then a bridging piece may be inserted into the joint, Drawing 6/9 Drawing 6/9 also shows material which has been grooved out and where a bridging piece is inserted into the material,again the joint is cut with either straight or fluted cutters and virtually any shape can be placed on the edge of the material within the boundary of the dotted lines and up to the grooved edge without the need for special shaped scribe & counter scribe cutters.
In order to clarify the benefit in using this type of joint over the traditional method of joining material into frames there follows a brief description of the traditional method of joining material into frames first, before moving on to more detailed descriptions of this new method.
The traditional method of joining material together is to have a(male)and(female)part to each joint and where the edges of the (male)/ (female)components are either square ,rectangular stepped shaped or grooved is to mark and cut either a square ,oblong ,or round hole in one of the pieces of the material (female) with one machine and or special shaped tool.
Then to cut the reverse of the shape on the other end of the matching (male) section of the material to be used in the joint,using a special machine sometimes with several separate tooling heads and special shaped cutters in order to cut a counter scribe over the first (female)piece of the material.If the size or shape on the edge of the material is changed then new cutters have to be formed and the machines be reset etc.
The specification outlined in this application is that only a single or multiple straight fluted circular cutter(s) need be used to cut both the joint required on the (male) of the material and on the end of the (female) member to be joined irrespective of whether the material is shaped (moulded) has a 90 degree edge (flush) or is grooved.
Also the thickness of the material can change with only a slight adjustment to height of the tool holder used to carry the circular cutter,providing the width of the material remain constant.
The method set out in this claim will save a lot of expense and time over the traditional method of working. Using the traditional method if the thickness of the material were changed then its possible that a complete set of additional tooling would be required to cut a joint between the component parts of the material.
In order that the method described can be examined in more detail,drawings have been prepared and submitted along with this application.
There are innumerable configurations and material sizes that the joint can be used on and the drawings 1/9 through to 9/9 contain a just a few representative examples.
Drawing 1/9 Shows a plan ,end ,and cross section view of a sample section of stepped rectangular material which could be used. Also shown is a plan view of a simple straight two flute cutter.Drawing 2/9 Fig C-i which could be used to cut the joint in both members of the material if the cutter could be rotated by 90 degrees,also shown is the direction of cut.
Alternatively a separate cutter again straight with 90 degree cutting edges but of a larger diameter could be used to cut the horizontal 90 degree slot in the (Female)member of the material.Whatever size of cutter used it would have to be used in some form of rotary motor driven machine or portable tool which could be either programed to follow the the direction of cut shown or used to follow either a fixed or adjustable gig form of any kind designed for this purpose.
The joint could be cut using hand tools again following a gig or form but without the radius on the ends of the (female) component or in the base of the V shaped cutout in the (male) component.
Drawing 2/9 Shows the same plan as Drawing 1/9 but with Index points which are listed and explained more fully on the following pages.
SW-1=SLOT WIDTH 1:This would be equal to the width of the material (female) SH-1=SLOT HEIGHT 1:This could be equal to the diameter of the circular cutter C-i used to cut the V shaped notch in the male member. Or alternatively a separate larger diameter cutter could be used to cut this slot out in one or two pass's .
SD-1=SLOT DEPTH 1: This could be equal to the depth of the step or rebate in the material and would be equal to BD- 1.
BW-1=BRIDGE WIDTH 1: This represents the width of the material and would be equal to SW-1.The internal upright and cross members of any frame to be manufactured should all be the same width.
BD-1=BRIDGE DEPTH l:This represents the depth of the V shaped cut in the(male)section of the material and could be the same as any step or rebate on the opposite face of the material. Although this could be more than any step or rebate RD-1 in the material this would result in the(female)section RH-1 of the two component parts having to be trimmed back on the edge where the step or rebate met the male component part of the material.
BH-1=BRIDGE HEIGHT 1:This would be equal to SH-1 in order to ensure a weather,dust or air proof joint and give positive positioning of the two component parts that make up the joint.
RD-1=REBATE DEPTH l:This could be any depth to suit the application that the jointing method was going to be used for.
Alternatively if the material were to be flush without any rebate then large diameter cutters could be used as a pair in tandem fitted to a single spindle or two cutters working independently to cut the V shaped recess BW-1/BD-1 on both faces of the material,leaving a permanent bridge in the (male) section of the material Drawing 4/9 Fig.l shows a three dimensional view of this slightly different variation of the joint.
RH-1=REBATE HEIGHT 1:This could be any height to suit the application that the jointing method was going to be used for.
Alternatively if the material were to be flush etc then large diameter cutters could be used as a pair in tandem fitted to a single spindle to cut the V shaped recess simultaneously on both faces of the material forming a permanent bridge the width and depth required, Drawing 2/9 BW-1/BD-1 MH-1=MOULD HEIGHT 1:This would represent the height of any overt moulding that could placed on the edge of the material which would be the overall height of the material minus RH-1 & SH-1 .Represented by dotted lines on the drawings provided.
MD-1=MOULD DEPTH 1 :This would represent the depth of any overt moulding that could be placed on the edge of the material and could be equal or less than RD-1 and cannot be greater than BD-1.Represented by dotted lines on the drawings provided.
OH-1=OVERALL HEIGHT l:This equals the overall height of the material,which should remain constant for all internal horizontal and vertical cross members.
OW-1=OVERALL WIDTH 1:This equals the overall width of the material,which should remain constant for all internal horizontal and vertical cross members.
OD-1=OVERALL DEPTH 1 :This equals the overall depth of the material,this dimension can vary on the outside horizontal members if required, but not on any internal members of any frame being made using the joint.
AN-1=ANGLE 1 :This represents the angle at which the V shaped notch is cut and should be constant at 135 and 45 degrees respectively, Drawing 2/9 AN-1 r-1 =RADIUS 1:This represents the radius of the cutter used to cut out the V shaped notch on the male section of the material and also the angle and radius on the female section.
C-1=CUTTER l:This represents the diameter of the cutter used to cut out the V shaped notch on the male section of the material and also the angle cut on the female section.This cutter could be at least the depth of the dimension BD-1 or RD-1 Drawing 2/9 so that the V shaped recess could be cut out with one pass.
DH-1= DOWEL HOLE 1:This represents the diameter of the optional dowel hole which could be used in conjunction with a dowel of the same diameter to fix the joint together.This hole would be in the (female) section of the material the depth of this hole would be MH-1 plus SH-1 plus half of RH-i DH-2= DOWEL HOLE 2:The hole in the (male) section of the joint could be positioned slightly off centre of the dowel hole of the female member thus by inserting the dowel through the assembled members would give a clamping affect.
The depth of this dowel hole would be equal to BH- 1.
Alternatively traditional fixings could be inserted through the face edge of the material into the ends of the female component as required.

Claims (5)

1.A method of cutting a joint between two pieces of material which enables any shape to be placed on the edges of the material or to be left at 90 degrees within the immediate boundary described as MH-1 and MD-1 Drawing 2/9 .Also that the joint can be cut on both female and male sections of the joint with just a simple straight circular cutter(s)or hand tools no matter how complex the shape on the edges of the material up to and including MH-1 MD-1 Drawing 2/9
2.As in claim 1 above a method of cutting a joint between two pieces of material where by a second circular cutter of a larger diameter could be used to cut out the slot referred to as SH-1/SD-1 Drawing 2/9 if the first cutter used could not be rotated by 90 degrees to cut the slot SH-1 or where the slot needed to be different depth SD-1 to the diameter of the cutter used cut out the V shape recess BD- 1 /BW- 1 Drawing 2/9
3.As referred to in claim 1 & 2 above a method of cutting a joint between two pieces of material where only one or multiple straight fluted cutter(s) need be used to cut the joint where the faces to be joined have either a 90 degree face joining or moulded faces joining each other
4.A method of cutting a joint between two pieces of material as in the preceding claims above whereby the joint is formed by following the shape of the recess either by programming a machine to follow the line of cut for the V shaped recess (male) and counter V shaped external cut on the (female) allowing for the width & thickness of the material to be joined or to be cut with hand tools or for a motor driven rotary tool to follow a gig of the specific design that is required for the material used.
5.As claimed in any preceding claim above wherein the basic shape of the joint is equal to one or more face side(s)/edge(s),where any moulding or 90 degree faces are to join being chamferd at a 135 degree angle and one 45 degree angle respectively plus any radius and or flat at the base of the joint with either a permanent or inserted bridge being placed on the (male) section of the joint and a slot and two matching angles being cut out of the (female) section of the joint.The width and depth of the joint could be any size to suit the application that the joint would be used for.
GB9003485A 1990-02-12 1990-02-12 Scribe & counter scribe joint Withdrawn GB2240744A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9003485A GB2240744A (en) 1990-02-12 1990-02-12 Scribe & counter scribe joint

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9003485A GB2240744A (en) 1990-02-12 1990-02-12 Scribe & counter scribe joint

Publications (2)

Publication Number Publication Date
GB9003485D0 GB9003485D0 (en) 1990-04-11
GB2240744A true GB2240744A (en) 1991-08-14

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
GB9003485A Withdrawn GB2240744A (en) 1990-02-12 1990-02-12 Scribe & counter scribe joint

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GB (1) GB2240744A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2933507A1 (en) * 2014-04-16 2015-10-21 Ingo Kneer Butt joint structure, window/door frame or window/door wing frame and frame profile element
DE202018006784U1 (en) 2018-03-14 2022-11-15 Buchholz Gmbh Arrangement of two panel-shaped elements connected to one another

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB349130A (en) * 1930-02-22 1931-05-22 Joseph Henry Whitfield Improvements in the construction of drawing, mounting and like built-up boards
GB455791A (en) * 1934-05-06 1936-10-28 Friz Adolf Improvements in machines for cutting tenons
GB564000A (en) * 1943-03-04 1944-09-08 Arthur Thomas Wellby Improvements in or relating to doors, panels, partitions, table tops and like articles
US3223132A (en) * 1960-06-03 1965-12-14 Erne Josef Template for making tenon joints
US3656521A (en) * 1970-06-30 1972-04-18 John F Czerniewicz Power chisel
WO1987001771A1 (en) * 1985-09-20 1987-03-26 Modul Bois Sarl Device for assembling elements and assemblies thus obtained

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB349130A (en) * 1930-02-22 1931-05-22 Joseph Henry Whitfield Improvements in the construction of drawing, mounting and like built-up boards
GB455791A (en) * 1934-05-06 1936-10-28 Friz Adolf Improvements in machines for cutting tenons
GB564000A (en) * 1943-03-04 1944-09-08 Arthur Thomas Wellby Improvements in or relating to doors, panels, partitions, table tops and like articles
US3223132A (en) * 1960-06-03 1965-12-14 Erne Josef Template for making tenon joints
US3656521A (en) * 1970-06-30 1972-04-18 John F Czerniewicz Power chisel
WO1987001771A1 (en) * 1985-09-20 1987-03-26 Modul Bois Sarl Device for assembling elements and assemblies thus obtained

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
British Standards 565: 1963 "Glossary of terms relating to timber and woodwork" see p.72 & p.93 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2933507A1 (en) * 2014-04-16 2015-10-21 Ingo Kneer Butt joint structure, window/door frame or window/door wing frame and frame profile element
DE202018006784U1 (en) 2018-03-14 2022-11-15 Buchholz Gmbh Arrangement of two panel-shaped elements connected to one another

Also Published As

Publication number Publication date
GB9003485D0 (en) 1990-04-11

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Legal Events

Date Code Title Description
911B Proceeding under rule 110 of the patent rules 1990
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)