FR2590513A1 - BLADE GUIDE DEVICE FOR TAB - Google Patents

Abstract

The object of the invention relates to a blade guide device for a miter. It is formed by the combination of a metal element comprising a cutout defining a hemisphere 4 whose attachment 5 to the bearing surface constitutes the spring with flat elasticity and a counter part provided with orifices 15 of corresponding diameter. to that of the hemispheres; these two elements each comprising side faces bent at 90 degrees so as to cover the edge of the slots 16, 17 of the tab over their entire height and side walls 2, 3 and 12, 13. It is intended to allow the protection of notches guiding the saw to cut parts at a determined angle, while giving greater precision to the cut especially for small parts such as moldings, cornices, framing rods or others. (CF DRAWING IN BOPI)

Description

The object of the invention relates to a guide device

blade for tab.

  It is intended to allow the protection of nicks

  guiding the saw to cut pieces at a determined angle

  mined, while giving greater precision to the cut especially for small parts such as moldings, cornices,

framing sticks or others.

  It is known to use blade guides for

  glets of large size, such as those used in the construction

  tion. Thus, balls with thrust springs have been used, such devices can not be used in

  small miter boots with narrow walls.

  The object of the invention eliminates these disadvantages and allows by prefabrication to obtain a blade guide constituted by a wall having the integrated semi-spherical guide profile

  its support spring and a wall provided with circular orifices

  laires ensuring the splicing points deviating under the passage of the saw which not only avoids the wear of the cut but

  gives the kerf a very high precision for the openings

  or assemblies requiring perfect regularity.

  It is constituted by the combination of a metallic element

  lique comprising a cut defining a half sphere whose attachment to the bearing surface constitutes the spring with elasticity

  flat and against a portion of ports of corre-

  corresponding to that of the half-spheres; these two elements

  each of the side faces folded at 900 so as to cap the edge of the slots of the tab over their entire height and side walls. In the accompanying drawings, given by way of non-limiting example, of one of the embodiments of the object of the invention: FIGS. 1, 2 show a front view and a profile view

  forming semi-spherical abutments and their spring.

  Figures 3, 4 show in the same conditions

  the forming of the receiving orifices.

  FIG. 5 is a cross-sectional view of

the entire device.

  Figures 6 and 7 are perspective views and at different dimensions of the tab with its blade guide members. The blade guide, FIGS. 1, 2, 3, 4, 5, is formed on the one hand by a U-shaped profiled metal lining.

1, with flap wings 2, 3.

  It has on its front side a series of

  pages and shapes determining a semi-spherical sector suitable for

  4 and a flexible spring fastener 5 at the same time

  that a support attached to the bearing surface ensuring elasticity

quoted flat.

  This frame is placed in a frame of applica-

  6 which is placed on the edge of the slots 7, 8, 9, 10, 11

small size (fig 6, 7).

  The counterpart is formed, FIGS. 3, 4, 5, by a metal section comprising the folds 12, 13 and carrying circular perforations 14, 15 having the same diameter as

  the semi-spherical mobile stops 4 embossed from stamping

  wise. When these frames are placed along the slots 7 and others, the spherical sectors 4 penetrate the orifices

and others.

  The saw during its passage must remove them on any

  the height of the blade which will thus be guided during the section-

the room.

  The kerf will then be of perfect regularity

  and will have the exact width of the blade without buckling or deflection.

  This precision of cut will be increased in time because the walls of the slots of the tab will not wear any more and the

  even trim on their faces 16, 17 will be protected.

  This device is particularly intended for small tabs for works of art and high accuracy can be used for tabs used for work more

  assembly of various parts without having to increase

  the thickness of the walls of the boot.

25905 13

  - 3 - However, the shapes, dimensions and arrangements of the

  different elements may vary within the limits of

  slow, as are the materials used for their manufacture.

  without changing the general conception of the invention.

which has just been described.

- 4 - 2590513

Claims (4)

  1 blade guide device for tab for   put the protection of the notches guiding the blade of the saw to   the cutting of the pieces according to a given angle while giving   greater accuracy in cutting especially for small pieces of art and precision, it being specified that this guide   blade neither nails nor diminishes the walls of the slit of the on-   glet which remain intact by obtaining the elasticity flat,   characterized by the combination of a guide element   the height of the slots (7, 8, 9, 10, 11) of the tab with protection and centering cut (2, 3) and comprising cut-outs and forming forming a semi-spherical sector, ends (4). and a flexible spring clip (5) connecting the movable member to its support on the one hand, and another contoured portion with side folds (12, 13) angled at right angles, and front surface provided with circular perforations ( 14, 15) of   same diameter as the semi-spherical mobile stops (4) and very.   2 Device according to claim 1, characterized   in that these blade guides protect the slot of the tab fitting symmetrically on the walls of the slots so that each semi-spherical movable stop (4) corresponds to   an orifice (14, 15) and penetrates slightly into said orifice.   3 Device according to claim 1, characterized   in that the cut piece (1) with drawdowns   (2, 3) is placed in a profiled frame corresponding to   ante (6) to allow a movement of the spring (5) and the semi-spherical movable stop (4) to ensure the exact passage of the stabilized saw blade over its entire height when   precision cutting of the workpiece.   4 Device according to claim 1, characterized   the fact that the cut-piece combination (1) and support mount (6) avoid any cut and wear of the edge of the slot on which he climbed.