FI77503C - Attachment for attaching roof chairs to a log house with saddle roof. - Google Patents

Description

77503

FIELD OF THE INVENTION they only allow longitudinal movement of the plank as the slider slides in the groove.

The invention relates in particular to the installation of a steep-pitched gable roof in connection with a log building. The water roof and top ceiling of the log building are installed on sloping girders 15, which are simply referred to here simply as planks. According to the prior art, planks are nailed at both ends to a log structure or an auxiliary structure belonging thereto. The upper end is thus nailed to the uppermost transverse horizontal log or support beam, referred to herein as the cuckoo log-20, and the lower end of the plank to the uppermost log of the wall. The natural depression of log walls in such a construction method causes problems over time, which are greater the steeper the roof. These manifest as either a protrusion of the top log of the wall or a crack in the wall. This phenomenon is caused by the fact that the depression is different at the ridge than at the lower end of the plank. It follows that when the upper end of the plank is pressed more than the lower end, the plank pushes the lower end sideways by the difference with its weight. Another possibility for the problem to occur is to prevent the natural depression of the top end, in which case the rafters tend to support the end walls and cracks appear in them.

Finnish patent application 830349 discloses a method of installing roof beams that solves the problem. According to this, the roof beams are placed on separately mounted! -35 h fork supports. Considerable labor is required to install these.

The object of the present invention is to eliminate the above-mentioned problems of the gable roof of a log building and to provide a practical, especially installation-technically advantageous pair of fasteners 2 77503 for carrying out the work. The main features of a pair of fasteners according to the invention are set out in claim 1. The embodiment shown in claim 2 facilitates the installation of a second fastener in a round log.

The invention will now be illustrated by reference to the accompanying drawings, which show an embodiment of the invention.

Figure 1 shows a general arrangement for the installation of roof chairs 10 Figure 2 shows the sliding attachment of a roof chair plank

Figure 3 shows a cross-section of the attachment of Figure 2

Figure 1 shows one roof chair of a gabled roof brick building on both sides of the brush. The installation method according to the invention is particularly advantageous in steeply braced log frames. The practical limit can be the slope of the roof of 30o, from which the above-mentioned problems begin to occur. The roof chair consists mainly of a plank 2, which is nailed to the upper transverse log forming the ridge, or to a beam 20, referred to herein as a cucumber log 4. At its lower end, the planks 2 are tied to the upper log 3 of the walls by pairs of fasteners 1. At other points, such as the partitions 5, a 30 mm clearance margin is left so that these do not start to support the plank 2. The deflection of the log wall is typically 20 ... 30 mm per 25 meters. When the brush log 4 presses slightly more than the upper logs 3 of the walls, the planks 2 slide longitudinally slightly outwards.

Figures 2 and 3 show in detail the non-slip attachment 1 of this plank 2 to the log 3. The slider bracket 7, which consists of a J-shaped pressed plate, is fixed in advance to the plank 2 30 with screws on both sides. In addition, corner edges 10 are pressed on its edges, by means of which it becomes mounted at exactly the right height. The upturned edge of the plate forms a slider 9 which fits into the groove 8 of the groove-35 bracket 6. The groove fasteners 6 are only nailed to the upper surface of the log 3 when the planks 2 are placed in the desired position, whereby they become bound at the same time. The pair of fasteners 1 tightly binds the planks 2 vertically, but allows them to slide 3 77503 longitudinally. The change in the angle of inclination during sliding is so small that it is not relevant for operation.

Claims (2)

4 77503 Patented Applications A pair of brackets (1) comprising a groove bracket (6) with a downwardly slotted groove 5 (8) in the direction of the plank (2) to be attached to the log (3) and a J-shaped slider to be attached to the plank (2) or similar of the roof chair 9) forming a bracket (7), which brackets (6,7) are arranged to each other so as to allow only longitudinal movement of the plank (2) as the slide (9) slides in the groove (8), characterized in that the slide bracket (7) comprises calmer supports (10) for aligning the slide bracket (7) to the lower part of the plank (2) to the side. A pair of fasteners according to claim 1, characterized in that the groove fastener (6) consists of a longitudinally fastened plate body, the end of which is pressed into a downwardly opening groove (8) adapted to tie the slider (9) of the J-shaped slide fastener (7) and the part of the groove bracket (6) supporting the log (3) being shaped 20 to be curved.