Abstract: The present invention relates to a didactic set of pieces for assembling structures, which comprises pieces (1)(2)(3) of optional usage for assembling structures with didactic purposes, comprising compatible assembly pieces (1)(2)(3) and provided with means of reciprocal assembly (4)(5)(16) that, assembled between each other, are able to form structures. It comprises a basic set (1) of pieces (1a)(1b)(1c)(1d)(1e)(1f) which assembly slots (4)(5) are open on any or all the sides (11)(12)(13)(14) comprising the piece perimeter.

Abstract: The present invention relates to a didactic set of pieces for assembling structures, which comprises pieces (1)(2)(3) of optional usage for assembling structures with didactic purposes, comprising compatible assembly pieces (1)(2)(3) and provided with means of reciprocal assembly (4)(5)(16) that, assembled between each other, are able to form structures. It comprises a basic set (1) of pieces (1a)(1b)(1c)(1d)(1e)(1f) which assembly slots (4)(5) are open on any or all the sides (11)(12)(13)(14) comprising the piece perimeter.

Abstract: An insulator member includes a set of passages (2) (4) which, without intercrossing, extend through the main body (1a) of the insulator member. The set of passages (2) (4) includes an insulating passage (2) structurally arranged to be engaged by filiform elements (10) and an elongated anchor passage (4) structurally arranged to be engaged by the hook portion (21) of the stretcher device (20). Since the passages (2) (4) do not intercross, the separating portion (1d) prevents the stretched filiform elements from being subject to compression upon stretching of the stretching device.

Abstract: An insulator member comprises a set of passages (2) (4) which, without intercrossing, extend through the main body (1a) of the insulator member. This set of passages (2) (4) includes an insulating passage (2) structurally arranged to be engaged by filiform elements (10) and an elongated anchor passage (4) structurally arranged to be engaged by the hook portion (21) of the stretcher device (20). The presence of the elongated anchor passage (4) allows inserting the anchor hook (21) of flat stretchers (20). Since the passages do not intercross (2) (4), it is prevented the separating portion (1d) from being subject to compression due to the strain action of the filiform element (10) and the hook (21) of the stretcher (20) to prevent the stretched filiform elements from being subject to compression upon stretching of the stretching device.

Abstract: An anchor stretcher device includes a wind up reel (7) having a false retention wall (9) which is mounted in a wall mount opening (9a) on one end of the device. The wind up reel includes a command head (11) on a rotary body (6) which is engageable with a cramp (10a)(9c) able to prevent its rotation and that possesses, at least, an anchor opening (9b) for a filiform element (30) to be stretched. Winding for stretching is performed by turning the command head (11). Since the anchor opening (9b) is situated laterally on the false retention wall (9), the filiform element (30) winds up in a very even manner on the wind up reel (7). A production method is describe which includes a series of steps through which component parts of the anchor stretcher device are produced.

Abstract: A stretching device for filiform elements comprises a main body member (1) having ends, with one of the ends having a connection opening (2) and the opposite end of the plate member having a rotating mounting opening (3) in the rotating mounting opening there is a rotating part (6) having a command head (11) which forms a winding reel (7) for the wire to be stretched; mounted on the main body (1) is a slide mobile cramp (12). The winding to stretch the element is done by turning the command head (11). Once the suitable stretching has been achieved, the slide mobile cramp (12) is slided until said command head (11) is introduced into the cramp recess (15) formed by the cramp fork (14). Under these conditions, the rotating part (6) is fixed, keeping the tension on the filiform element.

Abstract: A fastener for cords includes a support body, a first flexible lever arm and a second flexible lever arm. The support body has an insertion device to guide a cord onto a main surface thereof. The first flexible lever arm is provided on the main surface of the support body and has a free jaw end. The first flexible lever arm has a cord guide to guide the cord from the insertion device of the support body to the free jaw end of the first lever arm. The second flexible lever arm is also provided on the main surface of the support body. The second flexible lever arm has a free jaw end opposing the free jaw end of the first flexible lever arm with a cord path being defined between the free jaw ends of the first and second flexible lever arms, the cord path having a width that is variable with flexing of the first lever arm. The second flexible lever arm has a retentive hooking tooth provided at a tip of the free jaw end thereof.