CA2129518A1 - Frame for supporting canvas - Google Patents
Frame for supporting canvasInfo
- Publication number
- CA2129518A1 CA2129518A1 CA002129518A CA2129518A CA2129518A1 CA 2129518 A1 CA2129518 A1 CA 2129518A1 CA 002129518 A CA002129518 A CA 002129518A CA 2129518 A CA2129518 A CA 2129518A CA 2129518 A1 CA2129518 A1 CA 2129518A1
- Authority
- CA
- Canada
- Prior art keywords
- kit
- frame
- moulding
- canvas
- plate
- 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.)
- Abandoned
Links
- 238000000465 moulding Methods 0.000 claims description 58
- 239000003292 glue Substances 0.000 claims description 9
- 238000012856 packing Methods 0.000 claims description 7
- 210000002105 tongue Anatomy 0.000 claims description 7
- 230000037431 insertion Effects 0.000 abstract 1
- 238000003780 insertion Methods 0.000 abstract 1
- 238000010276 construction Methods 0.000 description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 208000018747 cerebellar ataxia with neuropathy and bilateral vestibular areflexia syndrome Diseases 0.000 description 3
- 239000002184 metal Substances 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- 230000009850 completed effect Effects 0.000 description 1
- 238000009432 framing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010417 needlework Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47G—HOUSEHOLD OR TABLE EQUIPMENT
- A47G1/00—Mirrors; Picture frames or the like, e.g. provided with heating, lighting or ventilating means
- A47G1/06—Picture frames
- A47G1/0605—Picture frames made from extruded or moulded profiles, e.g. of plastic or metal
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B44—DECORATIVE ARTS
- B44D—PAINTING OR ARTISTIC DRAWING, NOT OTHERWISE PROVIDED FOR; PRESERVING PAINTINGS; SURFACE TREATMENT TO OBTAIN SPECIAL ARTISTIC SURFACE EFFECTS OR FINISHES
- B44D3/00—Accessories or implements for use in connection with painting or artistic drawing, not otherwise provided for; Methods or devices for colour determination, selection, or synthesis, e.g. use of colour tables
- B44D3/18—Boards or sheets with surfaces prepared for painting or drawing pictures; Stretching frames for canvases
- B44D3/185—Stretching frames for canvases
Landscapes
- Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
Abstract
A kit of parts for making a frame for supporting a canvas, a frame assembled from said parts and an artist's canvas comprising a canvas mounted on said frame are provided. In order to allow the assembly of a frame (38) of any desired size, it is foreseen that the end-user may cut and mitre one or more frame members (31) to the required lengths. Canvas is secured to the frame members and is then stretched by the insertion of wedges (39) between the frame members.
Description
212~Slg ~ 21 ~12~01~.
- ~ 7 MA~CH 1994 FR~ME FOR SUPPORTING CaNVAS
This invention relates to a kit of parts for making a frame for supporting a canvas, a frame assemblad from said parts and an artist's canvas aomprising a canvas 5 mounted on said f rame . ~ ' ~
Conventionally, artist's canvas are prepared by securing a canvas on a frame which is then expanded to tension the canvas. Traditionally, the frame is made from a kit of parts comprising four mouldings the ends of which are ~ach provided with ~ tenon which engages in a mor tice in the adjacent moulding when the frame is assembled. Thus each end of each length of moulding is provided with a mortice and a tenon. In addition, the faces of each end of each moulding are mitred. In use, the mouldings are assembled to form a frame. A canvas is then secured to the frame and is tensioned by inserting wedges between the tenons ancl mortices as required.
Whilst this arrangemerlt has been used for many years it has the dis~dvantage that highly specialized equipment ls resluired for cuttirlg and shaping the ~nds of each moulding. As a result, rames are relatively expenslv~ and, more importantly, are only availabla in a limited number of sizes de~ermined by the manufac~urer.
Altholigh fxames can be obtained to a required size they are very expensive and usually involve a delay of sev-eral weeks to obtain.
U5-A 3 651 854 dis~ loses as frame which is made from a kit of parts comprising four mouldings the ends of which are simply mitred at 45. Instead of using mortice and tanon j oints the mouldings are ; oined by f "L"-shapQ metal plates which are accommodated in "T"-shape slots opening in the front face of the frame.
P-fter a can~as has ~:seen secured to the frame it is stretched by inser ting wedyes between the mitres .
US- A-3 830 278 discloses a frame which i5 made from P ~ r ~ c ~; ' ~ n ~ L. S ~ T
.
g ~U~9 2/ 1~241~6 212551 017~ ~flaRCH 1994 a kit of parts comprising four mouldings the ends of which are also mitred at 45. Instead of using "L"-shape metal plates the mouldings are joined by triangular cornar pieces. Each corner piece has two edges which are mutuall.y perpendiculax and are recei,~d in shallow channels in the mouldings. The corner pieces are secured to the mouldin~s by bolts which pass through holes in the mouldings and slots in the corner pieces.
The present invention, as least in its preferred embodiments, aims to provide a kit of parts which can be readily adapted or making a frame of desired size.
According to the present invention there is provi-ded a kit of parts for making a frame for supporting a canvas, which kit comprises at least one moulding having a tapered groove extending therealong and at least one plate insertable in said groove.
Preerably, said plate has two edges which are provided with teeth.
In one embodiment, sai.d plate is of substantially trianyular shapeO
In ano~her embodiment, sa~d plate is of substanti-ally truncated triangular shape.
Preferably, said plate is tapered.
Advantageously, said kit includes four plates.
Preferably, said tapered groo~e is defined betwean a ~irst portion and a second portion ~nd said second portion extends beyond said first portion~
If desired said kit may include four lengths of moulding which may be mitred so that the frame may be constructed to a standard size if required.
Prèferably, the kit includes at least one packing piece which may comprise, for example a wedge. However, the packing piece may be form~d from one or more pieces which are not tapered.
Advantageously, said kit includes at least four ~ ~ ; S~T
~ sa~ion ..~ _. _ ,... , ., . ,. , , . . . ~ , ,- ,- . - .
21235~8 ~T1~9 2/ 024~6 0 7 MARC~l l994 packlng pieces.
Preferably, said kit includes at least one fastener comprislng a first surface, a second surface extending substantially perpendicular to said first surface, and at leas-t one spike extending from said f~r-st surface.
In a d~fferent ~mbodim~nt said kit includas a single plate which will gen~rally be rectangular.
~ he kit may also comprise glue and/or canvas and/or means to secure a canvas to said moulding.
The kit may also include a brace.
Advan~ageously, said brace comprises a moulding of genarally 'H' shape cross-section having oppositely extending grooves, and a pair of end piace~., each end piece comprising a tongue portion and a pair of legs which can be slid into respective ones of said groo~es in said moulding to provide said moulding with tongues at each end thereof.
The present invention also provides a frame when made from a kit in accordance with the invention.
Th2 present invention further provides an artist's canvas comprlsing canvas mounted on a frame in accor-dance with the invention.
Z~
._. ,.. , . .. __ . _ __ . ,.. ._ _ ~ t j ~ ~ Ll! 1 y ~ S i ~ . IL .T
~ C,J !~;..;:.;;..,' ~;~.j'i~,a.!on 2 1 2 ~ ~ ~ 8 P8U~
For a better understanding of th~ invention refer-ence will now be made, by way of example, to the accom-panying drawings, in which:-Figure 1 is a perspective view of a first embodi-ment of a moulding; ,-- `
Figure 2 is a plan view of a plate which can be used in tha construction of a frame in accordance with the present invention;
Figure 3 is a fragmantary view showing a corner of 1~ a frame made using the moulding shown in Fiyure 1 and the plate shown in Figure 2;
Figure 4 is a perspective end view of a second embodiment of a moulding;
Figure S is a perspective view of a plate which can be used in the construction of a fr~me in accordance with the invention;
Figure 6 is a fragmentary view showing a corner of a frame using the mouldiny shown in Figure 4 and tha plate shown in Figure 5;
20Figure 7 is a perspective end view of a third embodimant of a mould~ng, Figure 8 is a perspectlve view,-to a much reduced scale, of a plate which can b~ used in the construction a frame in accordance with the invention;
25Figure 9 is a fragmentary view showing a corner of a frame using the moulding shown in Figure 7 and the :~ plate shown in Figure 8;
Flgure 10 is a perspective end view of a fourth embodiment of a mouldin~ used in the construction of one embodiment of a frame in accordance with *he present .
inv~ntion;
Figure 11 is a perspective view o~ a plate which oan be used in the construction of a frame in accordance with the invention;
Figure 12 is a perspective view of a fastener;
i.5~ T~ ET
~ ~ .. . .. . . . . . .
P~U6~ 9 2 / ~ 2 4 0.8:
212 ~ 5 ~ CH 199~
Fi~ure 13 ~s a side elevation of the fastener shown in Figure 12, Figure 14 is a fragmentary view showing a corner of a frame in accordance with the invention using the moulding shown in Figure 10, the ~ e shown in Figure 11 and two fasteners as sh~wn in Figures 12 and 13;
Figure 15 is a perspective view of one end of a moulding for forming part of a brace;
Figure 16 is a perspective view of an end piece for use with the moulding shown in Figure 15; and Figure 17 is a fragmentary perspective view of one side of a frame provided with the moulding shown in ~igure 15 and the end piece shown in Figure 16.
Referring to Figure 1 o~ the drawings, thexe is shown a ~oulding which is generally identified by the reference ~umeral 11. The moulding ll, which is made of wood, has an upper portion 13A and a lower portion 13B
which define a groove 12 therebetween. The upper surface of the upper portion 13A slopes towards the ~pening of the groove 12 as shown.
Figure 2 shows a plate 14 which is of generally truncated triangular shap~ in plan. The edges 15 and 16 of the plate are generally perpendicular to one another and are each provided with a multiplicity of teeth 17.
In us~, the moulding 11 is first cut to ~he re-quired lengths to suit the size of frame required. The lengths are then mitred and arranged in the orm of a ~rame 18. Four plates 1~ are then lightly inserted into the grooves 12 at the corners of the frame 18 as shown in Figure 3.
The whole rame 18 is then laid on a canvas which is secured to the moulding 11, for example by staples and/or pins. The plates 14 are then gently tapped in the direction of arrow A in Figure 3 with a hammer. As the STi~lJTE S~ET
P~T/6B9 210 2401~.
plate 14 moves into the corner ~he sides of the frame 18 separate thereby tensioning the canvas. The teeth 17 on the plate inhibit the plate re~urning to its original position~
If desired glue may be used to sec~ the plate 14 to the moulding 11 ln its final position.
Various modifications to the embodiment described are envisaged, for example the teeth 17 could be omitted and the plate 14 simply made a tight fit in the groove 12. If desired, ~ the plate 14 could ~be tapered. In such embodiments the use of glue and/or pins to secure the plate 14 to the moulding ll would be most desirable to pravent shrinkage of the plate 14 (which is conveniently mada of wood) releasing the tension.
* * *
Referring now to Figure 4~ the moulding 21 is generally similar to the moulding 11 in that it has a groove 22. However, the upper portion 23A of the mould-ing 21 is not sloped.
The plate 24 shown in Fi.gure 5 is generally similar to ~he plate shown in ~igure 2 except that it is comple-tely triangular in plan and the edges 25 and 26 are not provided with any teeth.
In us~, the moulding 21 ~s cut and mitred to the required lengths whiCh are then laid out to form a frame 28 (Figure 6). Four plate~ 24 are then inserted in respectiv~ corners of the frame 28 which is then laid onto a canvas which is secured to the ~rame 28. Packing 30 :in the form of wedges 29 are then inserted between the mitres of the sides of the fram~ 28 as shown to tension the canva~. Onca in position, the wedges 29 are ideally secured to the plates 24, for example by glue.
If desired non-tapered packing pieces could be used -in place of the wedges 29.
l Ur,it~d '~ ~,( r~ ;tcfjo~ S~ 3~ E ~;~
. _ , . ~
p~ 2 1 Q ~ ~ 0 6 2129~18 ~7 MA~CE~ t~
Whilst the embodiment shown in Figures 4 to 6 will work it has some disadvantag~s, particularly in the environment of a commercial framing establishment.
In particular, in such environments guillotines are usually used for cutting mouldings. I~lly the upper portion 23A and lowar portion 23B of the moulding 21 should be as wlde as possible and the groove 22 as deep as possible to give maximum rigidity to the frame 28.
However, such mouldings can collapse when cut by a 10 guillotine.
This problem can be substantially overcome by using the moulding 31 as shown in Figure 7. It will be seen ~hat the upper portion 33A of the moulding 31 is shorter than the lower portion 33B. This mouldi~g 31 can be readily cut by a guillotine with little or no risk of collapse. At the same time the overall rigidity of tha final frame is significantly enhanced.
Once cut and mitred to th2 required size the lengths of moulding are arranged in a rectangle around the periphery of a single rectangular plate 34. The frame 38 thus fo~med is then place~ on a canvas with the lower portion 33B of the moulding 31 in contact with the canvas. The canvas is than secured to the frame 38 by staple~ and~or tacks and~or glue and a wedge 39 is pushed home on top o the plate between adjacent upper portions 33A of the frame 38. The wedges 39 are then glued in posltion.
This later arrangement has significan~ advantages.
In particular, conventional artist's canvases, and those purchased as described with reference to Figures 1 to 6 have the disadvantage that they are often picked u~ by inserting the fingers between the frame and the canvas.
this produces a stretched area which spoils the canvas.
By having a solid back the artist's canvas cannot be picked up with the fingers between the frame and the ~5r~ r,, O~ ? ~ ' ,r-lr =l ~TIû~ 9 2 I 0 2 4 0 6 212 ~ u 7 MAR~H 19~' canvas. In addition the artist's canvas can ~e stacked and kept more safely.
In the embodlment shown in Figures 10 to 14 the moulding 41 is similar to the moulding 31 shown in Figure 7 except that the groove 42 is ta~I2d.
Once cut and mitred to the required size the lengths of moulding 41 are arranged in the orm of a frame 48. Four plates 44 are then lightly inserted into the ~rooves 42 a~ the corners of the frame 48 as shown in Figure 14.
The whole frame is then laid on a canvass which is secured to the moulding 41 by staples and/or tacks and/or glue.
The plat~3s 44 are then tapped in to the corners to stretch the canvas. Whil~t the taper on the grooves 42 should be sufficient to hold the frame 48 in the d~sired position there is always a risk that the plates 44 (which may themselves be tapered) will work looseO For this reason it is desirable to secure ~he plates 44 by, for e~ample staples and/or tacks and/or glue.
A particularly useful fasten~r is shown in Figure 12~ In particular, the fastener, which is generally identified by reference numeral 20, comprises a bent piece of m~tal having a first surface 21 and a ~econd 25 surface 22 extending generally at right-angles to said first sur ace 21. A plurality of spikes 23 are pressed out of the first surface 21 as shown. In the embodiment shown, one spike Z3A points forwardly, whilst the spikes 23B to either side are ~ngled at about 45 with respect to the spike 23A~
In uS~ the leadlng edge 24 of a fastener 20 is inserted between the plate 44 and lower portion 43B of each moulding and then tapped into place by hammering against second surface 220 The spikes 23 retain the plate 44 in position.
nit~d, ; ;;,rl P ~ t o~l Su~sTlT~TE ~H~T
~3~1 PCT/6~9 21 024~B' 0 7 MARC~I 1994 g With larger rames it is necessary to provide one or more braces which extend acro~s the frame. Conven-tionally each end of such braces is provided with a tenon which slots intv mortices cut in the frame.
Figure 15 shown a moulding 101. The moulding is of ~enerally 'H' shape cross-section having grooves 102A
and 102B disposed on opposite edges thereof.
Figure 16 shows an end piece 103 which includes a tongue portion 104 from which extend ~wo legs 105 and 106.
In order t~ brace, for example the frame 18 shown in Figure 6 the moulding 101 is first cut to the re-quired length. The legs 105 and 106 of end piece 103 are then slid into grooves 102A and 103B to provide the mculding 101 with a tongue 104 at one end thereof. A
similar end piece is then mounte~ on the other end (not shown) of the moulding 101 t:o form a brace.
During construction the tongue 104 is simply slid into the groove 12 of the ~oulding 11 and secured in place by, for example packing in the form of a wedge 107 (Figure 17). Again, pins and/or glue may be used to secure the brace in position.
It is also possible to insert bxaces into a comple-ted unbraced frame. In~ertion may require a temporary s~all distortion of the frame. Alternatively the brace may be cut a fraction short and wider wedges used.
Finally, although it is normally desirable to be able to stretch the canvas certain types o canvas have a natural elasticity which enables them to be stretched as they are mounted on the frame. Similarly, it is someti~es possible for a skilled craftsman to mount a canvas on a frame sufficlently taut for stretching to be unnecessary. It is thus not essential to use a wedge in all cases.
The term "canvas" as used herein includes canvasses ,, ..~ .~
r~ v~ 0~ ~ J,~T
~ij~r~,;~ .. .~'i-.;,~,.~s~on 9 2 ~ 4 0 ~` 212951~ 07 MARGH 19 -- 1~
for paint~ ng, tapestry and needlework.
, .
". ,~
: ~ : : : .
~ , ~ 30 , . I i : :::
:
- ~ 7 MA~CH 1994 FR~ME FOR SUPPORTING CaNVAS
This invention relates to a kit of parts for making a frame for supporting a canvas, a frame assemblad from said parts and an artist's canvas aomprising a canvas 5 mounted on said f rame . ~ ' ~
Conventionally, artist's canvas are prepared by securing a canvas on a frame which is then expanded to tension the canvas. Traditionally, the frame is made from a kit of parts comprising four mouldings the ends of which are ~ach provided with ~ tenon which engages in a mor tice in the adjacent moulding when the frame is assembled. Thus each end of each length of moulding is provided with a mortice and a tenon. In addition, the faces of each end of each moulding are mitred. In use, the mouldings are assembled to form a frame. A canvas is then secured to the frame and is tensioned by inserting wedges between the tenons ancl mortices as required.
Whilst this arrangemerlt has been used for many years it has the dis~dvantage that highly specialized equipment ls resluired for cuttirlg and shaping the ~nds of each moulding. As a result, rames are relatively expenslv~ and, more importantly, are only availabla in a limited number of sizes de~ermined by the manufac~urer.
Altholigh fxames can be obtained to a required size they are very expensive and usually involve a delay of sev-eral weeks to obtain.
U5-A 3 651 854 dis~ loses as frame which is made from a kit of parts comprising four mouldings the ends of which are simply mitred at 45. Instead of using mortice and tanon j oints the mouldings are ; oined by f "L"-shapQ metal plates which are accommodated in "T"-shape slots opening in the front face of the frame.
P-fter a can~as has ~:seen secured to the frame it is stretched by inser ting wedyes between the mitres .
US- A-3 830 278 discloses a frame which i5 made from P ~ r ~ c ~; ' ~ n ~ L. S ~ T
.
g ~U~9 2/ 1~241~6 212551 017~ ~flaRCH 1994 a kit of parts comprising four mouldings the ends of which are also mitred at 45. Instead of using "L"-shape metal plates the mouldings are joined by triangular cornar pieces. Each corner piece has two edges which are mutuall.y perpendiculax and are recei,~d in shallow channels in the mouldings. The corner pieces are secured to the mouldin~s by bolts which pass through holes in the mouldings and slots in the corner pieces.
The present invention, as least in its preferred embodiments, aims to provide a kit of parts which can be readily adapted or making a frame of desired size.
According to the present invention there is provi-ded a kit of parts for making a frame for supporting a canvas, which kit comprises at least one moulding having a tapered groove extending therealong and at least one plate insertable in said groove.
Preerably, said plate has two edges which are provided with teeth.
In one embodiment, sai.d plate is of substantially trianyular shapeO
In ano~her embodiment, sa~d plate is of substanti-ally truncated triangular shape.
Preferably, said plate is tapered.
Advantageously, said kit includes four plates.
Preferably, said tapered groo~e is defined betwean a ~irst portion and a second portion ~nd said second portion extends beyond said first portion~
If desired said kit may include four lengths of moulding which may be mitred so that the frame may be constructed to a standard size if required.
Prèferably, the kit includes at least one packing piece which may comprise, for example a wedge. However, the packing piece may be form~d from one or more pieces which are not tapered.
Advantageously, said kit includes at least four ~ ~ ; S~T
~ sa~ion ..~ _. _ ,... , ., . ,. , , . . . ~ , ,- ,- . - .
21235~8 ~T1~9 2/ 024~6 0 7 MARC~l l994 packlng pieces.
Preferably, said kit includes at least one fastener comprislng a first surface, a second surface extending substantially perpendicular to said first surface, and at leas-t one spike extending from said f~r-st surface.
In a d~fferent ~mbodim~nt said kit includas a single plate which will gen~rally be rectangular.
~ he kit may also comprise glue and/or canvas and/or means to secure a canvas to said moulding.
The kit may also include a brace.
Advan~ageously, said brace comprises a moulding of genarally 'H' shape cross-section having oppositely extending grooves, and a pair of end piace~., each end piece comprising a tongue portion and a pair of legs which can be slid into respective ones of said groo~es in said moulding to provide said moulding with tongues at each end thereof.
The present invention also provides a frame when made from a kit in accordance with the invention.
Th2 present invention further provides an artist's canvas comprlsing canvas mounted on a frame in accor-dance with the invention.
Z~
._. ,.. , . .. __ . _ __ . ,.. ._ _ ~ t j ~ ~ Ll! 1 y ~ S i ~ . IL .T
~ C,J !~;..;:.;;..,' ~;~.j'i~,a.!on 2 1 2 ~ ~ ~ 8 P8U~
For a better understanding of th~ invention refer-ence will now be made, by way of example, to the accom-panying drawings, in which:-Figure 1 is a perspective view of a first embodi-ment of a moulding; ,-- `
Figure 2 is a plan view of a plate which can be used in tha construction of a frame in accordance with the present invention;
Figure 3 is a fragmantary view showing a corner of 1~ a frame made using the moulding shown in Fiyure 1 and the plate shown in Figure 2;
Figure 4 is a perspective end view of a second embodiment of a moulding;
Figure S is a perspective view of a plate which can be used in the construction of a fr~me in accordance with the invention;
Figure 6 is a fragmentary view showing a corner of a frame using the mouldiny shown in Figure 4 and tha plate shown in Figure 5;
20Figure 7 is a perspective end view of a third embodimant of a mould~ng, Figure 8 is a perspectlve view,-to a much reduced scale, of a plate which can b~ used in the construction a frame in accordance with the invention;
25Figure 9 is a fragmentary view showing a corner of a frame using the moulding shown in Figure 7 and the :~ plate shown in Figure 8;
Flgure 10 is a perspective end view of a fourth embodiment of a mouldin~ used in the construction of one embodiment of a frame in accordance with *he present .
inv~ntion;
Figure 11 is a perspective view o~ a plate which oan be used in the construction of a frame in accordance with the invention;
Figure 12 is a perspective view of a fastener;
i.5~ T~ ET
~ ~ .. . .. . . . . . .
P~U6~ 9 2 / ~ 2 4 0.8:
212 ~ 5 ~ CH 199~
Fi~ure 13 ~s a side elevation of the fastener shown in Figure 12, Figure 14 is a fragmentary view showing a corner of a frame in accordance with the invention using the moulding shown in Figure 10, the ~ e shown in Figure 11 and two fasteners as sh~wn in Figures 12 and 13;
Figure 15 is a perspective view of one end of a moulding for forming part of a brace;
Figure 16 is a perspective view of an end piece for use with the moulding shown in Figure 15; and Figure 17 is a fragmentary perspective view of one side of a frame provided with the moulding shown in ~igure 15 and the end piece shown in Figure 16.
Referring to Figure 1 o~ the drawings, thexe is shown a ~oulding which is generally identified by the reference ~umeral 11. The moulding ll, which is made of wood, has an upper portion 13A and a lower portion 13B
which define a groove 12 therebetween. The upper surface of the upper portion 13A slopes towards the ~pening of the groove 12 as shown.
Figure 2 shows a plate 14 which is of generally truncated triangular shap~ in plan. The edges 15 and 16 of the plate are generally perpendicular to one another and are each provided with a multiplicity of teeth 17.
In us~, the moulding 11 is first cut to ~he re-quired lengths to suit the size of frame required. The lengths are then mitred and arranged in the orm of a ~rame 18. Four plates 1~ are then lightly inserted into the grooves 12 at the corners of the frame 18 as shown in Figure 3.
The whole rame 18 is then laid on a canvas which is secured to the moulding 11, for example by staples and/or pins. The plates 14 are then gently tapped in the direction of arrow A in Figure 3 with a hammer. As the STi~lJTE S~ET
P~T/6B9 210 2401~.
plate 14 moves into the corner ~he sides of the frame 18 separate thereby tensioning the canvas. The teeth 17 on the plate inhibit the plate re~urning to its original position~
If desired glue may be used to sec~ the plate 14 to the moulding 11 ln its final position.
Various modifications to the embodiment described are envisaged, for example the teeth 17 could be omitted and the plate 14 simply made a tight fit in the groove 12. If desired, ~ the plate 14 could ~be tapered. In such embodiments the use of glue and/or pins to secure the plate 14 to the moulding ll would be most desirable to pravent shrinkage of the plate 14 (which is conveniently mada of wood) releasing the tension.
* * *
Referring now to Figure 4~ the moulding 21 is generally similar to the moulding 11 in that it has a groove 22. However, the upper portion 23A of the mould-ing 21 is not sloped.
The plate 24 shown in Fi.gure 5 is generally similar to ~he plate shown in ~igure 2 except that it is comple-tely triangular in plan and the edges 25 and 26 are not provided with any teeth.
In us~, the moulding 21 ~s cut and mitred to the required lengths whiCh are then laid out to form a frame 28 (Figure 6). Four plate~ 24 are then inserted in respectiv~ corners of the frame 28 which is then laid onto a canvas which is secured to the ~rame 28. Packing 30 :in the form of wedges 29 are then inserted between the mitres of the sides of the fram~ 28 as shown to tension the canva~. Onca in position, the wedges 29 are ideally secured to the plates 24, for example by glue.
If desired non-tapered packing pieces could be used -in place of the wedges 29.
l Ur,it~d '~ ~,( r~ ;tcfjo~ S~ 3~ E ~;~
. _ , . ~
p~ 2 1 Q ~ ~ 0 6 2129~18 ~7 MA~CE~ t~
Whilst the embodiment shown in Figures 4 to 6 will work it has some disadvantag~s, particularly in the environment of a commercial framing establishment.
In particular, in such environments guillotines are usually used for cutting mouldings. I~lly the upper portion 23A and lowar portion 23B of the moulding 21 should be as wlde as possible and the groove 22 as deep as possible to give maximum rigidity to the frame 28.
However, such mouldings can collapse when cut by a 10 guillotine.
This problem can be substantially overcome by using the moulding 31 as shown in Figure 7. It will be seen ~hat the upper portion 33A of the moulding 31 is shorter than the lower portion 33B. This mouldi~g 31 can be readily cut by a guillotine with little or no risk of collapse. At the same time the overall rigidity of tha final frame is significantly enhanced.
Once cut and mitred to th2 required size the lengths of moulding are arranged in a rectangle around the periphery of a single rectangular plate 34. The frame 38 thus fo~med is then place~ on a canvas with the lower portion 33B of the moulding 31 in contact with the canvas. The canvas is than secured to the frame 38 by staple~ and~or tacks and~or glue and a wedge 39 is pushed home on top o the plate between adjacent upper portions 33A of the frame 38. The wedges 39 are then glued in posltion.
This later arrangement has significan~ advantages.
In particular, conventional artist's canvases, and those purchased as described with reference to Figures 1 to 6 have the disadvantage that they are often picked u~ by inserting the fingers between the frame and the canvas.
this produces a stretched area which spoils the canvas.
By having a solid back the artist's canvas cannot be picked up with the fingers between the frame and the ~5r~ r,, O~ ? ~ ' ,r-lr =l ~TIû~ 9 2 I 0 2 4 0 6 212 ~ u 7 MAR~H 19~' canvas. In addition the artist's canvas can ~e stacked and kept more safely.
In the embodlment shown in Figures 10 to 14 the moulding 41 is similar to the moulding 31 shown in Figure 7 except that the groove 42 is ta~I2d.
Once cut and mitred to the required size the lengths of moulding 41 are arranged in the orm of a frame 48. Four plates 44 are then lightly inserted into the ~rooves 42 a~ the corners of the frame 48 as shown in Figure 14.
The whole frame is then laid on a canvass which is secured to the moulding 41 by staples and/or tacks and/or glue.
The plat~3s 44 are then tapped in to the corners to stretch the canvas. Whil~t the taper on the grooves 42 should be sufficient to hold the frame 48 in the d~sired position there is always a risk that the plates 44 (which may themselves be tapered) will work looseO For this reason it is desirable to secure ~he plates 44 by, for e~ample staples and/or tacks and/or glue.
A particularly useful fasten~r is shown in Figure 12~ In particular, the fastener, which is generally identified by reference numeral 20, comprises a bent piece of m~tal having a first surface 21 and a ~econd 25 surface 22 extending generally at right-angles to said first sur ace 21. A plurality of spikes 23 are pressed out of the first surface 21 as shown. In the embodiment shown, one spike Z3A points forwardly, whilst the spikes 23B to either side are ~ngled at about 45 with respect to the spike 23A~
In uS~ the leadlng edge 24 of a fastener 20 is inserted between the plate 44 and lower portion 43B of each moulding and then tapped into place by hammering against second surface 220 The spikes 23 retain the plate 44 in position.
nit~d, ; ;;,rl P ~ t o~l Su~sTlT~TE ~H~T
~3~1 PCT/6~9 21 024~B' 0 7 MARC~I 1994 g With larger rames it is necessary to provide one or more braces which extend acro~s the frame. Conven-tionally each end of such braces is provided with a tenon which slots intv mortices cut in the frame.
Figure 15 shown a moulding 101. The moulding is of ~enerally 'H' shape cross-section having grooves 102A
and 102B disposed on opposite edges thereof.
Figure 16 shows an end piece 103 which includes a tongue portion 104 from which extend ~wo legs 105 and 106.
In order t~ brace, for example the frame 18 shown in Figure 6 the moulding 101 is first cut to the re-quired length. The legs 105 and 106 of end piece 103 are then slid into grooves 102A and 103B to provide the mculding 101 with a tongue 104 at one end thereof. A
similar end piece is then mounte~ on the other end (not shown) of the moulding 101 t:o form a brace.
During construction the tongue 104 is simply slid into the groove 12 of the ~oulding 11 and secured in place by, for example packing in the form of a wedge 107 (Figure 17). Again, pins and/or glue may be used to secure the brace in position.
It is also possible to insert bxaces into a comple-ted unbraced frame. In~ertion may require a temporary s~all distortion of the frame. Alternatively the brace may be cut a fraction short and wider wedges used.
Finally, although it is normally desirable to be able to stretch the canvas certain types o canvas have a natural elasticity which enables them to be stretched as they are mounted on the frame. Similarly, it is someti~es possible for a skilled craftsman to mount a canvas on a frame sufficlently taut for stretching to be unnecessary. It is thus not essential to use a wedge in all cases.
The term "canvas" as used herein includes canvasses ,, ..~ .~
r~ v~ 0~ ~ J,~T
~ij~r~,;~ .. .~'i-.;,~,.~s~on 9 2 ~ 4 0 ~` 212951~ 07 MARGH 19 -- 1~
for paint~ ng, tapestry and needlework.
, .
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: ~ : : : .
~ , ~ 30 , . I i : :::
:
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r s,ii :;alic~l
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Claims (20)
1. A kit of parts for making a frame for supporting a canvas, which kit comprises at least one moulding (41) having a tapered groove (42) extending therealong and at least one plate (14;24,34:44,103) insertable in said groove.
2. A kit as claimed in Claim 1, wherein said plate (14) has two edges (15,16) which are provided with teeth (17).
3. A kit as claimed in Claim 1 or 2, wherein said plate (24;44) is of substantially triangular shape.
4. A kit as claimed in Claim 1 or 2, wherein said plate (14) is of substantially truncated triangular shape.
5. A kit as claimed in Claim 1, 2, 3 or 4, wherein said plate is tapered.
6. A kit as claimed in any preceding Claim, including four plates (14;24;44).
7. A kit as claimed in any preceding Claim, wherein said tapered groove (32) is defined between a first portion (33A) and a second portion (33B) and said second portion (33B) extends beyond said first portion (33A).
8. A kit as claimed in any preceding Claim, including four lengths of moulding (11;21;31;41).
9. A kit as claimed in Claim 8, wherein the ends of said mouldings are mitred.
10. A kit as claimed in any preceding Claim including at least one packing piece (29;39).
11. A kit as claimed in Claim 10, including at least four packing pieces (29;39).
12. A Kit as claimed in any preceding Claim, including at least one fastener (20) comprising a first surface (21), a second surface (22) extending substantially perpendicular to said first surface (21), and at least one spike (23) extending from said first surface (21).
13. A kit as claimed in Claim 1 or any of Claims 7 to 11 when appended to Claim 1, including a single plate (34).
14. A kit as claimed in any preceding Claim, including a tube of glue.
15. A kit as claimed in any preceding Claim, including a canvas.
16. A kit as claimed in any preceding Claim, including means to secure a canvas to said moulding.
17. A kit as claimed in any preceding Claim, including a brace.
18. A kit as claimed in Claim 17, wherein said brace comprises a moulding (101) of generally 'H' shape cross-section having oppositely extending grooves (102A, 102B); and a pair of end pieces (103), each end piece comprising a tongue portion (104) and a pair of legs (105, 106) which can be slid into respective ones of said grooves (102A, 102B) in said moulding (101) to provide said moulding with tongues at each end thereof.
19. A frame when made from a kit as claimed in any preceding Claim.
20. An artist's canvas comprising a canvas mounted on a frame as claimed in Claim 19.
Applications Claiming Priority (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB929202429A GB9202429D0 (en) | 1992-02-05 | 1992-02-05 | Plate and groove stretcher bar |
| GB9202429.8 | 1992-02-05 | ||
| GB929212918A GB9212918D0 (en) | 1992-02-05 | 1992-06-18 | Frame for supporting canvas |
| GB9212918.8 | 1992-06-18 | ||
| GB9214391A GB2264056A (en) | 1992-02-05 | 1992-07-07 | Frame for supporting canvas |
| GB9214391.6 | 1992-07-07 | ||
| PCT/GB1992/002406 WO1993015921A1 (en) | 1992-02-05 | 1992-12-30 | Frame for supporting canvas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2129518A1 true CA2129518A1 (en) | 1993-08-19 |
Family
ID=27266037
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002129518A Abandoned CA2129518A1 (en) | 1992-02-05 | 1992-12-30 | Frame for supporting canvas |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0625099A1 (en) |
| CA (1) | CA2129518A1 (en) |
| WO (1) | WO1993015921A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2314811B (en) * | 1996-07-02 | 2000-06-14 | Kevin Paul Trembath | Sliding dowel joint (for artists stretchers) |
| ES2935685T3 (en) * | 2018-03-03 | 2023-03-09 | Gesplan Gestion Conseil Inc | Device and method for stretching a canvas on a frame |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3651854A (en) * | 1970-04-13 | 1972-03-28 | Frederick Terna | Canvas stretcher |
| US3830278A (en) * | 1973-10-01 | 1974-08-20 | L Packer | Canvas stretcher |
| US4255886A (en) * | 1979-02-09 | 1981-03-17 | Tara Materials, Inc. | Artist canvas stretcher frame brace bracket |
-
1992
- 1992-12-30 WO PCT/GB1992/002406 patent/WO1993015921A1/en not_active Application Discontinuation
- 1992-12-30 CA CA002129518A patent/CA2129518A1/en not_active Abandoned
- 1992-12-30 EP EP93900331A patent/EP0625099A1/en not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| EP0625099A1 (en) | 1994-11-23 |
| WO1993015921A1 (en) | 1993-08-19 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Discontinued | ||
| FZDE | Discontinued |
Effective date: 19960630 |