WO2002090131A2

WO2002090131A2 - Frame for canvas

Info

Publication number: WO2002090131A2
Application number: PCT/PT2002/000007
Authority: WO
Inventors: João Manuel da ENCARNAÇÃO MOTA GOMES
Original assignee: Encarnacao Mota Gomes Joao Man
Priority date: 2001-05-07
Filing date: 2002-05-07
Publication date: 2002-11-14
Also published as: WO2002090131A3; WO2002090131B1

Abstract

The present invention relates to a frame for canvas, of the type used by painters as a frame for his canvas during the painting procedures. It is constituted by corner elements (1) with spigots (3) prepared to enter adjusted in the hollow of the lateral rods (9), for the canvas being layered in the trapezoidal re-entry (6) and fixed in with the help of the fit in wedges (14) (15) fitted by pressure in the re-entry mentioned (6) and the canvas being stretched by separation with adequate tools of the corner element (7) and the use of the fixing and adjusting element (16). It provides also the use of a holder elements (10) of stabilising crossbars (17) which allows the uneven crossing. This invention don't uses tacks or staples to fix the canvas and allows the easy transport, dismounting and remounting without damaging the canvas.

Description

"FRAME FOR CANVAS"

OBJECTIVE OF THE INVENTION

The present Patent relates to a frame for canvas, of the type used by painters as a frame for his canvas during the painting procedures.

It is composed of universal corners, stable sides according to the needs and system to properly stretch the canvas, which works in all sizes.

It also foresees the possibility of applying crossbars on fitted in grooves, plain or unevenly crossed that maintain the stability of the canvas when properly stretched, (needed for large sizes)

BACKGROUND OF THE INVENTION

The frames till now used are fabricated exclusively in wood and the canvas is fixed under tension on the crossbars by means of staples and tacks. The wood crossbars are cut at half square on both ends and possess male/female type grooves, procedure that obviously by its nature and precision cannot be normally executed by the reseller.

Thus, the painter has to acquire for his work a frame with the available sizes from the reseller or wait that the reseller obtains from the supplier a frame with the measurements required for his intended work.

In other hand, each frame is a structure with a certain dimension difficult to store and transport.

Thus, the transportation of a canvas obliges you to make a frame or box to its measurement to transport it without dismounting it, or to take out patiently each staple or tack to transport the canvas rolled up, but always with the risk of tearing while remounting it under tension because of the prior holes left.

SUMARY OF THE INVENTION

The present Patent comes to avoid these inconveniences, thus the reseller does not have to have frames stocked with the ranges of the more intended sizes and thus just has to have a stock of separate parts - corner parts, rods by the metre for the crossbars and fixating wedges of the canvas, holders for stability crossbars and stability crossbars by the metre, (for the larger canvas sizes)

The reseller will cut according to the necessity, with an ordinary cutting tool the rods that become immediately ready to be used without any finish. The parts will be made of an adequate material, namely produced in an injection mould in function with the profitability of the production and only has to be hard, light and can be easily cut by a manual or electrical saw, so as not to suffer bending or other deformations like wood.

With the frame of the present Patent as the object, it is possible to easily stretch or dismount the canvas and every time it is necessary to .do so, since it does not use staples or tacks, as it is easy to disassemble the frame which does not use glue, nails or screws.

In this way, transporting a large canvas becomes a simple operation and without risks of being damaged during the remounting.

The present system is incomparably safer, practical and efficient.

BRIEF DESCRIPTION OF THE DRAWINGS

To complete the description which is being made, and with the objective to help for a better understanding of the characteristics of the invention, the present descriptive document is accompanied with an ensemble of drawings that are an integrating part of the Patent and in which, in an illustrative way and not in a limiting way, was represented by the following:

FIG 1 - Upper view of the corner part

FIG 2. - Back view of the corner part

FIG 3. - Upper view of the side crossbar

FIG 4. - Back view of the side crossbar

FIG 5. - Stabilising crossbar holder

FIG 6. - Stabilising crossbar

FIG 7. - Lateral fixating wedge of the canvas on the crossbar

FIG 8. - Fixating corner wedge of the canvas FIG 9. - Adjusting and fixing part FIG 10 - Complete frame

The figures 1 and 2 show the corner part made in a single moulded part (1), in a right angle made by the corner itself (2) which shows in the front side a peripheral exterior edge (4) with the generic form of a quarter of a circle with the round part (5) turned to the interior and coming out of this corner (2) two spigots (3) of adequate extension and with a profile in a way as to enter adjusted in the hollow of the side rods.

In the back side (FIG2) the side corner itself shows a re-entry of a trapezoidal profile (6) open in the smaller side.

The figures 3 and 4 show the side crossbars (7), in which the fig 3 shows in detail the upper side with the peripheral exterior edge (4) with the generic form of a quarter of a circle with a round part (5) turned to the interior and the FIG 4 shows the re-entry of a trapezoidal profile (6) open on the smaller side which extends along the crossbar.

On the internal side there are spaced holes (8) which allow the adjustment of the frame and fitting in the stabilising grooves.

The interior of the crossbar has a hollow profile (9) adequate to receive the spigots (3).

The FIG5 shows the holder part of the stabilising crossbars (10) composed by the part of the fixation to the lateral crossbars by means of pegs (11). Which fit in the holes (8) in a generic triangular form and a spigot (12) of an adequate profile in order to go in adjusted in the stabilising crossbar.

The formation of the spigot (12) in the part (10) allows that the alteration of the position of the mentioned part (10) in conjunction with its opposite allowing uneven crossing of the stabilising crossbars. FIG. 6 shows a view of the stability crossbar (17) with a parallelepiped form with a hollow interior profile (18) adequate to receive the spigots (12) and with the holes (13) to adjust the length.

The figures 7 and 8 show the wedge of the lateral crossbars (14) and the side wedge (15) destined to fix the fitted canvas in the trapezoidal salience (6).

The FIG 9 shows a fixing and adjusting element (16) to introduce in the holes (8) and (13) limiting the sliding into the spigots (3) and (12).

The FIG 10 shows the frame object of the present Patent duly assembled and stabilised with the spigots (3) and (12) introduced in the hollow of the dotted crossbar whose introduction is regulated by the fixing and adjusting elements (16).

DESCRIPTION OF A PREFERED EMBODIMENT

From specialist resellers were bought four corner parts (1) the lateral crossbars (7) cut to size, four holders (10) of stabilising crossbars, two stabilising crossbars (17) cut to size, 12 fixing and adjusting elements (16) and eight corner wedges (15) and the necessary wedges of the lateral crossbars (14).

The frame is assembled without the fixing and adjusting elements (16) and, if necessary, the crossbars that insure the stability of the large canvases are assembled right away.

The canvas is laid on a plane surface with the part to paint turned down and secondly, the frame is placed duly centred with the front part and showing the peripheral edge (4) that separates the canvas from the total surface of the crossbar and the corner on the canvas.

Next, the edges of the canvas are folded on the open side of the trapezoidal re-entry (6) that acts as a bed and as it is folded, it is fixed according to the groove of the wedge (14) (15) in the peripheral re-entry with the intention of the maximum tension of the canvas.

After the edges of the canvas are folded and fixed by the wedges, it is necessary to stretch the canvas as much as possible, which is easily done with the help of a type of tool "screw driver", which serves as a lever pushing slightly apart the crossbar (7) from the respective spigot (3) fixing it through the fixing and adjusting elements (16) introduced in the holes (8).

Every time it is necessary to disassemble, it will be enough to take out the mentioned fixing and adjusting elements (16) and then take out the wedges (14) and (15).

It is not necessary to make this present descriptive document more extensive for its perfect reproduction by an expert on this matter. The variations of the materials, form, size or disposition of the component elements, which were here described in a non limiting way does not put in cause the essence of the present invention.

The materials, form, size or disposition of the elements will be susceptible of variations always and when it does not implicate an alteration to the essential characteristics of the invention.

LISBON, 6^th MAY 2002

Claims

1. FRAME FOR CANVAS, characterised in that it is constituted by corner elements (1) with spigots (3) prepared to enter adjusted in the hollow of the lateral rods (9), for the canvas being layered in the trapezoidal re-entry (6) and fixed in with the help of the fit in wedges (14) (15) fitted by pressure in the re-entry mentioned (6) and the canvas being stretched by separation with adequate tools of the corner element (7) and the use of the fixing and adjusting element (16).

2. FRAME FOR CANVAS, according to claim 1 characterised to foresee the use of a holder elements (10) of stabilising crossbars (17) which allows the uneven crossing.

3. FRAME FOR CANVAS, according to claims 1 and 2 characterised for not using tacks or staples and allow the easy dismounting and remounting without damaging the canvas.

LISBON, 4^th OF MAY 2001