FR2615712A1 - Portable table for examining drawings - Google Patents

Abstract

Table with a device for examining and displaying drawings or writing, comprising: two winders 1 and 1' provided with longitudinal slots 29 and 29' and with cranks 8 and 8' turning on shafts 9 and 9' and on pivots 10 and 10', a board 2 separates the winders 1 and 1' and the sheet of drawings or writing, driven by the winders 1 and 1', moves over this board. The rims 4, 4', 4'' and 4''' connected together at a lower part to a table top 5 by a hinge 18 and to a transparent cover at the upper part by a hinge 24 form a casing with three compartments, two of which are reserved for the housings 3 and 3' of the rolls located on either side of a case 6 and enclose the winding device. The whole unit is raised by two pairs of legs 17 and 17' articulated under the table top 5.

Description

PORTABLE DRAWING CONSULTATION TABLE
The invention relates to a table having a winding device for
present and maintain large format drawings for the purpose of viewing them or
to modify them despite the uncomfortable exposures encountered on construction sites
and in nature.

Opening and maintaining large format sheets is not easy with
wind and rain make the paper unusable. When an architect,
surveyor, site manager, worker or other uses plans for a project to
accomplish, do not always have, to protect their documents, a well-equipped and sheltered room
on the site of a construction site and even less on the job. So he resorts to the means
makeshift: signs and thumbtacks, plastic sheets, or even spread out on the
ground the plans he maintains with stones or other objects. It is not without
defilement, without tearing and without loss of time.

The invention aims to overcome these various drawbacks by proposing a device
allowing to open, maintain and protect designs on a portable table by
moving them from one roll to another.

This object is achieved according to the invention in that it comprises:
Two cylinders on which the plans or drawings are wound and unrolled simultaneously: By their position, they apply the figures on a board.
open while allowing their movement from one roll to another.

A board located between the two reels on which the strip slides
consisting of sheets of assembled drawings.

A safe of sufficient capacity to house a reserve of rolls or
documents.

A device for driving the reels, either by crank
either by motor.

 A transparent cover protects plans and documents.

Four folding legs enhance, without compromising its size, a set
which forms a case.

The invention is explained in more detail below by means of an embodiment shown in the accompanying drawing in which:
FIG. 1 represents an overall view of the table with a winding device placed on its feet, open trunk, raised lid, reels placed in their housings ready to receive a strip of paper.

FIG. 2 represents the table, the closed trunk, a reel with half extended,
The other fully extended revealing the pivot and the crank removed.

 Figure 3 shows the table placed on edge, closed, ready to be transported like a suitcase. The reels hold in place thanks to the two small hooks holding the axes of the cranks.

 FIG. 4 proposes a variant relating to the drive of the rollers.

 According to Figure I the winding device consists of two cylinders I] placed on either side of a board 2 protected in housings 3 3 'and by flanges 4, 4', 4 "and 4" ' .Connected by a hinge 18 to a plate 5 on which is located a trunk 6 and two spaces 3 3 'above which will turn the reels 1 I'.The trunk 6 is kept open by a toggle compass 16 placed at the end 19 opposite the hinge. Two pairs of feet 17 17 'articulated under the plate 5 by the pins 21 21' 21 "21" 'stabilized in the open position by the toggle compasses 22 22', enhance the assembly. A transparent cover 7 half open allows writing while protecting the viewed plane. The reels 1 1 'bored in their ends 20' are applied to the pivots 10 10 'fixed to the rim 4'. A longitudinal slot 29 is created to receive the sheets to be rolled up. The bores 20 receive two cranks 8 8 'via the axes 9 9'. On each axis is fixed a small claw 14 14 'and a stop 13 13'. The pins 9 9 'and the reels I 1' being coupled descend into the slots 12 12 'of the flange 4 fac * ux pivots 10 10' and take their place of operation. Two hooks 11 and 11 'hold them in place.

their position. The cover 7 hinged on the hinge 24, kept open at 45 by a compass 25 shelters the board 2 and allows the writings thereon. Two pressure closures 26 26 'keep the cover closed in good time. 27 27 'are used to close the boot. The use of the handle 28 makes it possible to transport the table to the workplace like a suitcase.

The device according to the invention operates as follows:
The two winding rollers I and the are engaged in their housings 3 3i in the following manner: the pivot 10 fixed to the flange 4 'is introduced into the bore 20' at one end 15 'of the reel 1, at the other end 15 the axis 9 of the crank 8 provided with a pin 14 and a stop 13 is introduced into the bore 20 '. The reel 1 and the crank 8 assembled descend by a slot 12 in the operating position . A hook 11 brought back by hand maintains the axis at the bottom of the slot 12. A return spring could be used for this maneuver. The second reel I 'is placed in its housing 3' in the same way as the first 1.

 These installed on either side of board 2 are ready to receive the paper. The operator engages a first sheet in the slot 29 of the take-up reel 1. After having turned the crank 8 by one complete turn, the paper is held on the cylinder.

The first plane fixed and rolled up, a second can be attached to it by gluing or stapling then a third and so on to form a roll until all the planes of a structure are connected and rolled up there. The size of the roller is limited only by the width of the housing 3. To consult a particular plan, the operator uses the second reel 1 '. It introduces into the slot 29 'the end of the strip which has just been formed.

By turning the crank 8 'the paper is wound on the cylinder -1' and is simultaneously unwound from the first reel 1. To search for a figure, simply turn one of the two reels 1 or 1 'to go to the desired meaning. This is done quickly and without deterioration of the paper.

 Being interchangeable, the drawing rolls are kept on the reels 1 or 1 'and deposited in the trunk for later use.

I1 goes without saying that we can make the device, any modifications without departing from the scope of the invention:
- In particular, the dimensions may vary depending on the size of the drawings commonly used in the exercise of a profession.

 - The crank drive system 8 and 8 'can be replaced by a motor drive device.

For example, as shown in Figure 4, this includes:
Two rollers 41 41 ', a motor 44, a belt 43 which surrounds the rollers 41 41' and the pulley of the motor 44. On this belt 43 comes to bear the end 15 of the coil 1. A roller 42 held by a rod 46 pivoting at its base on an axis 47, pushed at its top by a spring 45, applies the reel 1 to the belt 43. The mechanism contained between two flanges 48 48 'is fixed to the rim 4 of the housing 3.

 The motor 44 drives the belt 43. Which drives the reel 1. The rollers 41 and 41 ′ tension the belt while the roller 42 applies the reel 1 against this belt 43.

 A second device identical to that described above adapts to the reel 1 '.

 The reels 1 and 1 'undergo little or no modification and remain interchangeable so as to use the cranks 8 in the same reels 1 1' in the event of engine failure. It goes without saying that this arrangement can be replaced by any other equivalent arrangement, without departing from the scope of the present invention.

Claims (5)

 1 - Table with a device for presenting and consulting drawings, plans or writing, characterized in that it comprises:  - two cylinders 1 and 1 'which, driven by two cranks 8 and 8', roll up a strip of paper.  - A board 2 located between the two winders 1 and 1 'on which the drawings pass from one roll to another.  - A transparent cover 7, articulated by a hinge 24, held closed by two pressures 26 26 ', protects the documents.  - a trunk 6, reserved for the transport of pending documents, placed under the board 2 which constitutes the cover  - Two pairs of feet 17 and 17 'foldable against the plate 5 held in the folded or standing position by two toggle compasses 22 22'.  2 - Device according to claim 1 characterized in that each reel 1 and 1 'has a longitudinal slot 29, two bore 20 and 20' at the ends 15 and 15 'which will receive the pivot 10 fixed to the flange 4' and the axis 9 of the interchangeable crank 8. The end 15 'of the reel 1' in the rotational position. The axis 9 'being engaged descends into the slot 12' of the rim 4 and is held there by a hook 11 '. The pivot I0 'being integral with the rim 4' maintains as soon as it engages in the bore 20 '  3 - Device according to all of claims 1 and 2 characterized in that the interchangeable means of the winders 1 and 1 'is constituted for each: by a crank 8 and an axis 9 removable from rim 4 and the bore 20 at one end 15, a hook retains at the bottom of the slot 12 the axis 9 and by a pivot 10 fixed to the rim 4 'removable from the end 15'.  4 - Device according to all of claims 1, 2 characterized in that the drive means of the winders 1 and 1 'is constituted by:.  - an electric motor device according to FIG. 4.  - a belt 43 surrounds two rollers 41 and -41 'and a pulley of an electric motor 44, applied by a roller 42 which pushes a spring 45 by means of a rod 46 pivoting at its base on an axis 47. The end 15 of the reel q comes into contact with the belt 43 which, by turning by the force of the motor drives the reel.  5 - Device according to claim 1 characterized in that the board 2 is located between the winders 1 and 1 'connected to records 4 and 4' forms the cover  trunk 6.