FR2838145A1 - Protection device for roofers comprises device composed of jaws with parallel clamping faces fixed under rafter and second device supporting handrail wire pegs with clearance allowing roofer to work - Google Patents

Abstract

The protection device is composed of a first device (2), fixed under a rafter (4) resting on a wall (23), on which is articulated, around a spindle (13), a second device (5) which comprises a support (15) for the pegs (26) on which the handrail wires are coupled. The second device has a clearance allowing the roofer to work and several peg fixing possibilities (25,27). The first device is composed of jaws (6,7) with parallel clamping faces (8,9). The first jaw is fixed and comprises a first linear guide (10) on which a guided device (11) integral with the second jaw is guided.

Description

mm, the handle is made of wood or plastic.

28381 45

  The invention relates to a versatile protection device for masons, roofers and zinc workers working on

roofs.

  A traditional building is. for example, formed of two side walls and two gable walls covered with a roof formed by two inclined sides starting from the ridge of the roof, connecting the tops of the gables, and resting at their base on the side walls; the roof sections generally extend beyond the side walls and gable walls by a few tens of centimeters; when installing or repairing roofs, the regulations require that roofers are protected from the risk of falling at the edge of the roof by stretched nets or boards, serving as guardrails, fixed on vertical stakes secured, by through appropriate fastening means, rafters, overhanging side walls, or purlins, overhanging gable walls; the rafters and purlins have a rectangular section and have an upper face on which the battens and the rafters are supported respectively, a lower face, opposite the upper face, and two lateral faces joining the lower and upper faces. If the existing fastening means of the vertical stakes allow satisfactory protection of the roofers when laying the tiles or slates, it is necessary to dismantle them at the time of the installation of the gutters by the zinc workers on the one hand because of their mode fixing which passes over the rafters which hinders the fixing of the flanges supporting the gutters, and on the other hand, because the threads are close to the end of the rafters and do not allow the positioning of the gutters. Securing the installation of gutters requires the dismantling of the roofers' protection device and the fitting of another specific device. The protective device that fits on the rafters does not generally fit on the purlins

level of the gables.

  The object of the invention is to propose a device for protecting mainly masons from roofers and

versatile zinc workers.

  lO The following description is based on the characteristics

  of the following figures: Figure.1 represents a perspective view of the device according to the invention in place on a roof rafter

  partially shown in place on a side wall.

  Figure 2 shows an exploded view of part of the

  device according to the invention of figure.1.

  Figure.3 shows the part of the device of Figure.2 in an improvement of the invention according to Figure.1. The versatile protection device 1 (Figure.1) according to the invention consists of a first device 2 for fixing on the side faces 3 of the rafters 4 or purlins on which is articulated in rotation a second

  device 5 removable stake holder.

  The first device 2 consists of a clamp comprising two jaws facing each other, forming a first and a second jaw 6 and 7, the clamping faces 8 and 9 of which are parallel and which move apart and tighten perpendicularly to their plan; the first jaw 6 is fixed and comprises a first linear guide device 10, oriented perpendicularly the clamping face 8, on which a first guidA device 11 is moved, integral with the second jaw 7, the relative movements of the two jaws 6 and 7 Atant assurAs by a clamping device 12; the first lindary Euidage device 10 and the first device quidA 11 are respectively located in the same cat around the clamping faces 8 and g of the first and second jaws 6 and 7 to allow the clamping faces 8 and 9 to come '' apply as best as possible to the lateral faces 3 of the rafters 4 or purlins; the first linear guide device 10 is located on the side of the clamping face 8 of the first jaw containing the second jaw 7, while the first guide device 11 is located on the opposite side of the clamping face 9 containing the first jaw 6 ie way between the clamping faces 8 and 9 of the two jaws 6 and 7 is only the first linear guide device 10 in order to free up the space between the two jaws 6 and 7; in the prAfAre version of the invention, the first linear guide device 10 of the first jaw 6 is applied to the lower face 47 of the chevron 4 or of the breakdown so that the clamping faces B and 9 of the first and second jaws 6 and 7 are applied to the latArales faces 3; the clamping device 12 is preferably located at the cht of the second mprs 7 and forces the sliding of the latter so that it approaches the first jaw 6 so as to clamp the jaws 6 and 7 on the lateral faces 3; the first jaw 6 comprises of the ctd opposite to the first linear guide device 10 a holding axis 13 perpendicular to the clamping face 8, one end of which is fixed on the first jaw and the other end of which is fixed

  which is free has a stop device 14.

  The second device 5 mainly consists of a stake support device 15, substantially in the form of a half-ring, situated in a plane, hereinafter called the main stake support plane, perpendicular to the direction of the retaining axis 13 , comprising a first and a second end 16 and 17, substantially located in a horizontal plane, the first end 16 of which is articulated on the retaining axis 13 by a perching perpendicular to the main stake support plane and held in place by the stop device 14, the second end 17 Atantant liter; the stake support device 15 comprises a convex edge 18 and a concave edge lg joining the two ends 16 and 17, the concave edge lg Atant turns towards the baut, the surface ciroonscribed by the latter Atant, sufficient to allow the passage of the gutter and of the strip and its attachment to the rafter 4 supporting the first device 2. The stake support device 15 comprises a second linear guide device 20, oriented substantially pralllement the line joining the ends 16 and 17 of the stake support iisposiLif 15, and placed in the vicinity of the middle of the convex edge 18; a second guide device 21 slides in the second guide guide device 20 and comprises a support device 22 on the lateral wall 23 or gable; the second linear guide device 20 and the second guide device 21 include a locking device 24 allowing them to be locked in tranlaion one by bringing the other when the support device 22 is in abutment on the wall the tAral 23 with the second linear guide device 20 in a substantially horizontal position; finally the stake support device 15 is equipped with at least two hooks 25 and 27 for the stakes 26 making it possible to fix the latter so that they are placed in a plane parallel to the main plane of the twoTheme stake support device 5 removable and substantially perpendicular to the direction of the second guide device 20; the attachment devices 25 must leave free the space delimited by the concave edge 19, the free end of the stakes 26, which are hooked to the attachment device, being rotated on the side of the concave edge 19 of the

  twoTem device S removable stake holder.

  Under these conditions when the first device 2 is fixed on a rafter 3 the stakes 26 are placed for the intervention of the roofers in the hanging device 27 of the stakes located closest to the edge of the roof, while for the intervention the zinc pole 26 is distant from the edge of the roof and fixed in a hooking device 25 located towards the second end 17 of the second device 5 removable pole support so as to leave sufficient space for the passage of the gutter. When the first device 2 is fixed to the end of a purlin with the support device 22 supported on the gable wall, the main plane of the second device 5 removable peg support is perpendicular to the slope of the roof and the pegs 26 are also oriented

  perpendicular to the slope of the roof.

  In a preferred version of the invention, the first device 2 (FIG. 2) consists of a clamp whose jaws 6 and 7 consist of a strip of sheet steel, of a thickness of three to five millimeters, folds in the shape of "u" whose clamping faces 8 and g are constituted by the sect10n of "U" and whose free ends 28 are welded for the first jaw on the first guide device 10 and for the second jaw 7 on the first guidA device 11; the first guide device 10 consists of a square tube, thirty fifty m111imAtres of catd whose free end 29, opposes that supporting the first jaw 6, is closed by a tightening Acrou 34 suda into which is screwed the clamping device 12 consisting of an endless screw 30 with a diameter of the order of fifteen twenty millimeters; the first guided device 11 consists of a square tube, of section slightly greater than that of the first guide device 10 on which it slides and whose free end 31, opposes the end supporting the second jaw 7, exceeds the end free 29 of the first Euidage device 10 and is closed by a support wall 32 welded with a guide orifice allowing the sliding of the worm 30; the worm 30 has a first end 33 screwed into the clamping nut 34 and a second end 35 which exits from the support wall 32 through the orifice; the second end 35 of the endless screw 30 comprising a clamping stop 36 which is drilled with a hole perpendicular to the axis of the screw in which a clamping bar 37 slides; when the worm screw 30 is screwed into the tightening nut 34 the tightening stop 36 comes to bear on the support wall 32 and the second jaw 7 approaches the first jaw to make a tightening; the maximum opening of the jaws is. for example, on the order of fifteen to twenty-five centimeters; the end of the first guide device 10 supporting the first jaw 6 is closed by a support wall 38 welded to the end of the tube and on which the retaining pin 13 is welded; the retaining pin 13 comprises at its end a keying device constituting the

stop device 14 (figure 1).

  The peg support device 15 of the second removable peg support device 5 (FIG. 1) consists, for example, of a steel sheet of thickness of the order of three to five millimeters which is cut out for substantially form a semi-circular half-ring whose diameter of the concave edge 19 is of the order of two to three times the width of a gutter and whose width of the half-ring is. for example, of the order of ten centimeters; the second guide device 20, which is welded to the stake support device 15, consists of a square tube, for example, of the same section as that constituting the first guided device 11 and from ten to twenty centimeters in length; it is pierced right through an orifice capable of receiving a locking pin 24; the second guided device 21 consists of a square tube, for example, of the same section as that constituting the first guide device 10, and generally has a length of the order of at least twice three times the distance between the ends 16 and 17 but may be longer depending on the advance of the roof concerned; the tube constituting the second guided device 21 is pierced right through, at regular intervals spaced from five to ten centimeters, orifices 39 capable of being traversed by the locking pin 24; the end of the second guided device 21 situated on the side of the first end 16 of the second device 5 comprises, perpendicular to the axis of the tube, a support disc 22 on the side wall 23 or on the gable wall; the hooking devices 25 27 of the stakes 26 consist of square section tubes welded to the second device 5 and in one of which is fitted a stake 26; when the stake 26 must use a hooking device 27 located in the vicinity of the second guide device 20 it may be necessary to use an extension to compensate for the length of a standard stake or to use a longer stake; The stakes 26 have at regular intervals either hooks 40 for fixing the nets or board supports serving as bodyguards. In an improvement of the invention, a hooking device 41 (FIG. 3) consisting of a square tube of the same section as that of the hooking devices 25 and 27 (FIG. 1) is welded on one of the faces 43 of the first guided device 11 so that they have their parallel faces two by two; one of the ends 44 being for example in abutment on the second jaw 7 and the second end recessed with respect to the free end 31 of the first guided device 11 so as not to interfere with the operation of the clamping device 12. This improvement allows, for example, using only the first device 46 to pinch between the jaws 6 and 7 a horizontal concrete slab and to fix a stake on the hanging device 41 in order to hang a guardrail net . All of the steel parts constituting the protection device are preferably galvanized to protect them.

against oxidation.

  1 0 1 0 Sales 1-Multipurpose protection device (l), supporting railings formed of nets or boards supported by stakes (26), intended for the protection of masons of roofers and zinc workers working on roofs traditional buildings formed by side walls (23), on which rafters (4) rest, and gable walls, supporting purlins, rafters and purlins, extending beyond the grip of the side walls and gable walls of buildings, lO being of rectangular section and comprising, a lower face (47) and two lateral faces (3), characterized in that it consists of a first device (2) for fixing on the lateral faces (3) of the rafters (4 ) or breakdowns on which a second one is rotatably articulated

  device (5) removable stake holder (26).

  2-Di spos it if according to claim l characterized in that the first device (2) consists of a first and a second jaw (6) and (7), the clamping faces (8) and ( 9) are parallel and move apart and tighten perpendicular to their plane, the first jaw (6) of which is fixed and includes a first linear guide device (10) on which a first guided device (ll) fixed to the second moves jaws (7), the relative movements of the two jaws (6) and (7) being ensured by a clamping device (12), the clamping faces (8) and (9) being applied on the lateral faces (3 ), the first linear guide device (lO) being applied to the underside (47) of the rafter (4) or of the purlin, the first jaw (6) comprising on the side opposite to the first linear guide device (lO ) a retaining pin (13)

28381 45

  perpendicular to the clamping face (8), one end of which is fixed to the first jaw (6) and the other end of which is

  which is free comprises a stop device (14).

  3-Device according to claims 1 and 2, characterized

  in that the second device (5) consists mainly of a stake support device (15), substantially in the form of a half-ring having a concave edge (19) turned upwards and a convex edge (18), perpendicular to the direction of the retaining pin (13), comprising first and second ends (16) and (17), the first end (16) of which is articulated on the retaining pin (13) and held in place by the stop device (14), the stake support device (15) comprising, on the one hand, a second linear guide device (20) and a second guided device (21) which slides in the second guide device linear (20) and which comprises a support device (22) on the side wall (23) or gable, the second linear guide device (20) and the second guided device (21) comprising a locking device (24 ), on the other hand, the stake support device (15) being equipped with at least s

  two hooking devices (25) and (27) for the stakes (26).

  - 4-Device according to claim 2, characterized in that the jaws (6) and (7) consist of a strip of sheet steel folded in the shape of "U" whose free ends (28) are welded for the first jaw (6) on the first guide device (10) and for the second jaw (7) on the first guided device (11), the first guide device (10) consisting of a square tube whose l the free end (29) is closed by a clamping nut (34) into which the clamping device (12) consisting of a worm screw (30) is screwed, the first guided device (11) consisting of a square tube, sliding on that of the first guide device (10), the free end (31) of which is closed by a support wall (32) pierced with a guide hole allowing the sliding of the worm (30), a first end (33) of which is screwed into the clamping nut (34), and a second end (35) of which has a stop d e clamping (36), the end of the first guide device (10) supporting the first jaw (6) being closed by a support wall (38) on which is welded the retaining pin (13) which comprises at its free end a keying device constituting the stop device

(14).

  -Device according to claim 3, characterized in that the stake support device (15) consists of a steel sheet which is cut to form substantially a semi-circular half-ring whose diameter of the concave edge ( 19) is of the order of two to three times the width of a gutter, the second guide device (20) consisting of a square tube pierced right through an orifice capable of receiving a locking pin (24), the second guided device (21) consisting of a square tube, with a length of the order of at least two to three times the distance between the ends (16) and (17), which is pierced, right through, at regular intervals with orifices (39) capable of being crossed by the locking pin (24), the hooking devices (25) (27) of the stakes (26) being made up of tubes Carrie SoudAs section on the stake support device (15) and

  in one of which is fitted a stake (26).

  6-Device, show claims 4 and 5, carctArisA

  in that a hooking device (41) consisting of a square tube of the same section as that of the hooking devices (25) and (27) is welded to one of the faces (43) of the first

guide device (11).

1 0 2S