WORKS

Field of Invention

This invention refers to devices that are used to install, adjust and fix tools and contrivances and can be used in various technical fields, particularly, in the construction during plastering, painting, decorating and tiling works, for the installation and fixation of plaster straightedges, perforated metal strips, scrids, rods, formwork, painting angle irons, window sills as well as during the installation and fixation of in-built safes and cabinets and for the installation and fixation of different types of building decoration, etc.

Background Art

Monitoring performance of modern finishing and painting works in construction, analyzing the quality of work performed by masons, plasterers, tillers, painters and reviewing issues arising at various stages of construction and finishing works, elucidating causes of deficiencies and excessive consumption of primary materials has set the target of making some processes in construction and finishing works less laborious, simpler and safer.

Presently, during plastering of walls and levelling off plaster planes various handy tools and contrivances, particularly those which provide the fixation of reference frames and pilot guides. In particular, these are nails, dowels, crooked nails, spacer strips and self-tapping screws. However, using the above items to fix tools and contrivances is associated with some limitations and drawbacks.

Fixation of reference frames by nails is possible only if walls are made of wood or foam concrete (AAC). If the wall is made of solid concrete or brick, driving a nail into such a wall is almost impossible, which makes fixation of the grade strip box unreliable. Furthermore, fixing by nails a reference frame levelled off in the required plane of the wall to a required depth of a door or window opening renders provokes vibration from the hammer thus changing the angle of nail entry and interfering with originally perfectly measured level of the reference frame or the pilot guide. As a consequence, the referencing of the reference frame to the wall surface around a door or window opening and to reference frames on the walls is impaired. This causes deficiency that becomes evident during installation of door frames, especially with platbands on two sides, by forming cracks under platbands or their distortion. Dismantling of reference frames requires preliminary extraction of nails, which increases labour intensiveness of the process and excessive consumption of wood and time. Fixing tools and contrivances with self-tapping screws when performing works associated with plastering the window and door plane esconsons distorts the original level parameters of pilot guides, reference frames or devices. This results in irregularities of the esconson plane and subsequently, defects. Dowels can also be used for installation and fixation of tools or equipment on concrete and brick walls when performing works associated with plastering of window and door plane esconsons. Using of dowels results in labour intensity and prime cost of works. However, the main disadvantage of using dowels for fixing devices is the need to drill holes in the wall and then converge these holes with holes of the attached device. Often the pneumatic hammer bit changes its direction by 1 -3 mm for various reasons. Deviation of the bit results in displacement of the fixed devices and tools' level from the originally proposed parameters. As a consequence, levelling off the necessary tools and contrivances is quite difficult. Digression from the originally defined calculation parameters during installation of tools and contrivances leads to deficiencies at all subsequent stages of finishing works.

It is known a device that can be used to install and fixing the reference frame for finishing works comprising a fastener with a rod-shaped part, and two clamping elements (RU, 2407869 C1 ). This device has a dowel made of polymer material, with ribs on the surface of its rod-shaped core parts to fix the dowel at the required depth. Two clamping elements of this device are located at the mounting pad. The reference frame is installed and fixed by turning this device by using a threaded or similar tool.

The disadvantages of this known device cause by :

· difficulty of accurately levelling off tools and contrivances due to the lack of ability to control their position that leads to lower quality of finishing works;

• the need for multiple devices to fix tools and contrivances;

• increased insecurity during work as the personnel can be scratched and the installed tools and contrivances can be damaged due to excessive load to the contact surface.

This prior art device is not all around: it can not be effectively used for installation and fixation of tools and contrivances during plastering of door and window plane esconsons, plastering of bay windows, cladding with trim tiles or installation of window sills, safes, cabinets etc. Using this device is characterized by low efficiency and poor quality of work associated with finishing of buildings, and is also characterised by risks of personal injuries.

Summary of Invention

The objective of this invention is to improve the device for installing and fixing tools or contrivances to a variety of bearing surfaces during the finishing works, which due to proposed technical means - ensures the following:

- the possibility of multiple multi-step adjustment without damaging fixing elements, tools and contrivances;

- achieving accuracy when installing the tools or contrivances, which is necessary to perform subsequent works as a guarantee of high quality at all intermediate work stages;

- reducing the load to fixed tools and contrivances;

- reducing the load on the surface, to which tools and contrivances are fixed;

- increasing strength and reliability of fixation;

- long term operation of the device subject to proper use and application; - safe and comfortable conditions of operation in segments of application due to better ergonomics and high functionality of all device components.

In addition, the proposed construction allows to use additional security means, including protective plastic caps put on the screw-pin to prevent accidental scratching or injury of personnel.

The above properties of the claimed device improve the quality of finishing works, enhance security and reliability of fixing tools and contrivances and simplify the installation and removal of construction tools and contrivances, including those related to the finishing works at all construction stages.

The claimed device is all around and highly efficient when installing, adjusting and fixing tools or contrivances in the following cases: when plastering the door and window esconsons, bay windows, surfaces of simple and compound shapes, installing painting steel slotted angle irons, paving cladding tiles, installing window sills, imbedding safes and cabinets into the wall, during restoration of architectural items. The above objects can be performed due to the fact that the device of installing and fixing tools or contrivances to different bearing surfaces during finishing and construction work includes the following:

- an elongated holder having two end portions and a body portion between them wherein each portion includes a cylindrical through- hole, the cylindrical through-holes at end portions being threaded;

- a fastener in the form of a rod which is arranged to pass in the through-hole of the body portion of the elongated holder and which has one end portion for fixing the fastener on the appropriate bearing surface and the other end portion for restricting and fixing movement of the elongated holder in the through-hole of its body portion during installing and fixing tool or contrivance; and - clamping elements each being in the form of a rod and having a threaded portion adapted to contact with the threaded through-hole (8,9) of the appropriate end portion of the elongated holder and having the one end portion for contacting with the tool or contrivance upon their installing and fixing.

In one of the preferred embodiments of this invention, the holder may be I- shaped, with all through-holes in the holder being parallel to each other. The term "l-shaped" (hereinafter "type "I") means that the holder is shaped as a large lock letter "I".

In another preferred embodiment of this invention the elongated holder may be L-shaped form and consists of two linear parts, the through-hole of the body portion and the through-hole of the one end portion of the holder being located on the first linear part of this holder , parallel to each other, and the through-hole of the another end portion being located on the second linear portion of the holder , perpendicular to the through-holes of the first linear part. Through-holes are cylindrical in shape and a through-hole of the body portion for fastener can be made either with or without internal thread, while each of through-holes in end portions for mounting the clamping elements has always an internal thread. The fastener may be made in the form of a pin, pin screw, anchored screw pin, anchor pin fitted with a nut and conical clamping handle, bolt, screw, screw nail, screw nail with anchor, screw nail with anchor and dowel. Moreover, each of these pins can be fitted with a nut or a handle with tapered clamp. The nut, with which a fastening element is fitted, can be selected from the following group: winged nut, eye nut, blind nut, star-nut, grooved knurled nut, conical pen nut with clamp, high knurled nut, flat knurled nut, square nut, hexagon nut, shaped nut.

Each clamping element may be shaped as: screw, bolt, spindle with an eye or screw with a shaped handle or screw with tap-wrench or hinged lever or star-shaped handle, or a T-shaped handle, or multi-component handle.

In another preferred embodiment of this invention, each of the clamping elements can be fitted with a disc fixed to its end part for increasing the contact area with the tool or accessory during its fixation.

Besides, the claimed device can be additionally fitted with a plate attached to the fastening element next to its end portion and arrange to increase the contact area with the bearing surface.

The plate plays the role of a "sole" and is equipped with a through-hole for mounting the fastening element located at or close to the plate's diagonal centre; it has extra holes or slits on the surface of the plate with the exception of the plate's diagonal centre. This embodiment is most useful when installing, adjusting and fixing tools and contrivances to the drywall, wood and foamed concrete surface. In this case, the through-hole of the fastening element can be provided with a hollow threaded cylindrical element that can be, for example, rigidly fixed by a nut.

Brief description of drawings

Further this invention is disclosed by the detailed description with references to the drawings, in which :

Fig. 1 shows one of the preferred embodiments of the device according to the invention, type "I";

Fig. 2 - elements of the device shown in Fig. 1 prior to the assembly; Fig. 3 - the device according to the invention, type "I", with the plate

(base flange); Fig. 4 - another embodiment of the device according to the invention, type

Fig. 5 - the device according to the invention, type "L";

Fig. 6 - the device according to the invention , type "L", with the plate (base flange);

Fig. 7 - the device shown in Fig. 6 prior to the assembly;

Fig. 8 - an example of using the device according to the invention, type "L", when plastering esconsons ( Example 2):

Fig. 9 - the example of using the device according to the invention, type "I" when installing and fixing the perforated angle iron on the outer corner of the esconson angle (Example 3);

Fig. 10 - the example of using the device according to the invention, type "L", with the base flange, when installing and fixing the perforated angle iron to the outside corner of the drywall structure ( Example 3):

Fig. 1 1 - the example of using the device according to the invention for finishing and construction work when laying the first reference row of tile ( Example 4):

Fig. 12 - the example of using the device according to the invention during installation and fixing of an in-build safe box ( Example 5).

Best mode for carrying out the invention

As shown in Fig. 1 , the claimed device has an elongated holder 1 , the fastening element (fastener) 2 and two clamping elements 3 and 4. Each clamping elements 3, 4 is made in a form of rod 6 and 7 respectively and includes a threaded portion adapted to contact with the threaded through-hole 8,9 of the appropriate end portion of the elongated holder 1 . According to one of the preferred embodiment of the claimed device the holder 1 is made from solid hard material in the form of l-shaped base (Fig. 1 - Fig. 4). In another best embodiment of the claimed device , the holder 1 is made from solid hard material in the form of L-shaped base (Fig. 5 - Fig. 7).

The fastener 2 (Fig.2) is made in the form of a rod 5. The rod 5 of the fastener 2 is arranged to pass in the through-hole 10 of the body portion of the elongated holder 1 and has one end portion 5i for fixing the fastener 2 on the appropriate bearing surface and the other end portion 5 ₂ for restricting and fixing movement of the elongated holder 2 in the through-hole 10 of its body portion during installing and fixing tool or contrivance.

All through-holes, namely a through-holel O for installation of the fastener 2 and through-holes 8 and 9 for installation of the clamping elements 3, 4 are made straight-shaped. If the holder 1 is made as an l-shaped base (Fig. 1 - Fig. 4), holes 8, 9 and 10 are parallel, and if the holder 1 is made as an L-shaped base(Fig. 5 - Fig. 7), holes 9 and 10 are parallel and a through-hole 8 is perpendicular to them.

The through-hole 10 for installation of a fastener 2 has a cylindrical shape, as shown in the illustrations. Each of through-holes 8 and 9 for installation of clamping element rod 3 and 4 are also cylindrical and fitted with an internal thread. It is preferable to make diameter of through-hole 10 for installation of the fastener 2 bigger than the diameter of through-holes 8 and 9 for mounting clamping element 3 and 4 respectively. It is clear that other sizes and diameters can be chosen depending on the specific using of the claimed device.

The rod 5 of fastening element 2 is mainly adapted to the free moving through a cylindrical through-hole O.

The fastener 2 can be configured as a pin and its end portion 5 ₂ preferably includes a nut 1 . Nut 1 1 can be of any type but the best are the following: winged nut, grooved (knurled) nut, star nut, packing nut, shaped nut, pen nut with clamp, high knurled nut, flat knurled nut, eye nut, blind nut, square nut, hexagon nut.

The end portion 5i of the pin-shaped fastening element 2 can be additionally equipped with a dowel 12.

Pin-shaped fastening element 2 can be additionally equipped with a base flange (plate) 14 (Fig. 3, 6, 7). Each clamping elements 3 and 4 has an end portion (13) for contacting with the tool or contrivance upon their installing and fixing can be configured as the eye screws or screws with a contoured handle or screw with a tap-wrench or with a folding handle or with a star-shaped handle or with a T- handle or multi-component handle.

Fig. 1 , Fig. 2 and Fig. 5 show the clamping elements 3 and 4 as a eyelet screws; Fig. 3 shows clamping elements 3 and 4 in the form of a screw with a folding handle, Fig. 4 shows clamping elements 3 and 4 as an eyelet screw in combination with star-shaped handle, Fig. 6 and Fig. 7 show clamping elements 3 and 4 in the form of a screw with a star-shaped handle. Preferably end portion 13 of each of elements 3, 4 is equipped with a disk 13i mounted on a rod 6 or 7 of the relevant clamping element 3 or 4.

Plate 14 (base flange) as shown in Fig. 3, 6, 7, is made of metal or plastic and provided with an aperture 15 for passing the fastener 2. Plate 14 may additionally have at least two holes or slits 16 used for the additional fastening means so as to reinforce fixation of the plate 14 to the bearing surface.

Aperture 15 for passing the fastener 2 can be made at a diagonal centre of plate 14, which is optional, and may be equipped with a hollow cylindrical element, such as a rigidly fixed nut. Numerous holes or slits 16 are uniformly (in pairs) located across the plate 14. Plate 14 serves as a "base flange" of the device when installing it on the surface of drywall or foamed concrete structures.

Fig. 8-12 show various examples of using the claimed device during finishing and construction work such as plastering of the window and door esconsons (Fig. 8), setting the perforated angle iron on the outer corner of the esconson (Fig. 9 and Fig. 10), laying the first reference row of tile (Fig . 1 1 ), installing in-build a safe (Fig. 12) where the following references are used: the claimed device 17, screed board 18, perforated angle iron 19, window esconson 20, wall 21 , tile 22, plank 23, safe 24, niche 25, wedges 27, reference roller 28, plastered esconson surface 29, door frame 30.

The claimed device operates as follows. The end portion 5i (Fig. 2) of the fastener 2 of the claimed device is installed in the drilled place (well) for installation and fixation of tools or contrivances. Holder 1 with released clamping elements 3 and 4 is installed on the rod 5 embedded to the desired depth.

Fig. 1 - Fig. 7 show one of the preferred embodiment of device with a fastener 2 in the form of a pin. During installation the pin is inserted in the determined drilled through-hole or the base flange aperture 15, if applicable the l-shaped or L-shaped holder 1 is set through a cylindrical through-hole 10 on the fastener 2 and then pressed by nut 1 1 to the desired depth. If the device is installed on a brick or concrete surface, it is recommended to insert the dowel 12 in a drilled through-hole before installing the rod 5 of the fastener 2.

If the device is installed on the foamed concrete surface, the rod part 5 of the fastener 2 is installed directly into the drilled hole. If the device is installed on the drywall surface, before mounting the holder 1 the plate 14 is screwed first through-holes 16 to the desired location then the rod 5 of the fastener 2 is set into the aperture 15. Further, the tool or contrivance to be installed and fixed (such as: screed board, slat, lath, perforated metal strip etc.) are put under one of the free ends (end portion 13) of clamping elements 3 or 4 - according to the level or to the lay-out, and, then by holding the said tool or contrivance this one is gradually and evenly tightened with the clamping elements 3 or 4. The difference in pressing between clamping elements 3 and 4 will be equal to the thickness of device or tool to be fixed in case if one of the clamping elements rests on the tool or contrivance to be fixed, and the other - on the bearing surface, to which the device or tool are fixed. The different examples of possible using of the claimed device during finishing and construction works are given below.

Example 1. Using the device of the invention, type "I", for plastering walls around the window opening.

Height and width of the window opening are measured and three straight and smoothly planed at edges wooden slats are selected. Length of the two slats corresponds to the height of a window opening, and the length of the third slat corresponds to the width of a window opening. Width of slats ranges between 100 and 120 mm, thickness: between 20 and 25 mm. The claimed device (having l-shaped holder, the fastening element is in the form of a pin equipped with a star nut, each clamping element is in the form of a screw with a handle or ear) is used to attach the slats to the concrete wall. Slats corresponding to the height of a window opening are set within the opening so that their planed surface is located at the same distance from the window frame and be in the same level with one reference plane of the wall. The place for drilling holes for rod 5 fastener 2 is selected at a distance from the installed slat. The drilling points are determined visually by drilling approximate uniformly across the length of the corresponding end wall. Deviation of the drilling points can be 15 to 20 mm without affecting the quality of the slat installation. To fix the reference slat on the window opening up to two meters long, it is necessary to have 2 or 3 the claimed devices for finishing and construction works, and preferably 3 such devices.

The dowel 12 is driven inside the drilled through-hole in concrete wall and a pin (fastener 2) is screwed in. The holder 1 with the released clamping elements 3,4 (the eye-bolts, each equipped with a disk 13i) , is installed on the rod 5 of the pin, for example the l-shaped holder 1 is set through a cylindrical through-hole 10 and pressed down with a nut 1 1 to the desired depth . Next, the slat is set under one of the clamping elements arranged as the eye-bolt with disc 13i and then the slat is levelled off . The second clamping element, arranged as the other eye-bolt with disc 13i, is set beard against the wall surface, and - holding the slat - the clamping elements are steadily and uniformly pulled thus adjusting their position.

The second and third slats are installed similarly. Perfect accuracy of fixing the levelled off reference slats is achieved by the claimed device, which, due to its design, allows for multiple and multiple-step adjustment of fixed slat. What is important, there is no need to choose a drilling point and drill the through-hole directly under the slat to mount the fastener. Besides, clamping elements and fixed slat are independent of each other and the rod of the device does not interfere with the installation and adjustment of the slat. Reference slats installed at the same level as the esconson with high quality and precision allow achieving accuracy of plastering the planes next to and around the openings. This, in turn, is a guarantee of high quality and precise geometry of future esconsons (control quality point at the interim stage). After plastering walls around the window opening, the references slats are easily and safely disassembled by releasing the clamping elements, unscrewing fastener nut and the device's fastening element for installation, adjustment and fixation of tools and contrivances. Example 2.

Using the device of the invention, type "L", during finishing and construction works associated with plastering of esconsons. Fig. 8 shows the use of the device 17 of the invention (type "L") for fixing screed board 18 as a screed.

By the time of finishing the esconsons the walls should be plastered and scoured. The required angle of esconson is set by using an angle staff. Based on the value of this angle, the reference level of the esconson outer boundary is determined on the plastered wall by installing and fixing a screed board or a reference slat with a claimed device similar to the described above in Example 1 .

In this case, the esconsons are trimmed after finishing the walls. To prevent the damage of the wall decor which is bordered with the area of future finishing work at the external angle of esconson, the proposed device of L- shaped form or l-shaped form can be used for finishing and construction works.

The drilling place for the rod part of the fastening element is selected in the area of plastered esconson. At some distance from the outer boundary of the esconson a well is drilled, a dowel is inserted in the well and a pin is screwed in a dowel. The holder with released pressure screws of device 17 is installed on the pin; the L-shaped holder is set through a through-hole for fastening element, and the holder is installed. The holder is mounted in such a manner that the clamping element - the screw at the end of a holder with an angular area - is located above the surface of the plastered wall where the screed is to be fixed. The screed board 18 is used as a screed. The holder of device 17 is pressed with a fastener nut to the desired depth. Further, it is recommended to install the screed board 8 under the screw of the clamping element located at the end of holder 1 with an angular area and bring the screed board 18 in line with level parameters. At the same time, another clamping element is beard against the wall 21 of esconson, and - holding the screed board 18 - steadily and uniformly pressed down and fixed with the clamping element's screw to the wall plane in place where the external angle of the esconson is to be fitted.

The role of the second screed during plastering of window apertures (esconsons) is played by the window frame 30 levelled off set in accordance with the standards.

The redundant amount of bonding plaster is applied to the surface of wall 21 for the esconson 29 to be plastered. Using two reference points: window frame 30 and screed board 18 fixed on the outer edge of the esconson - the device 28 for plastering the windows and door esconsons in configuration as shown on Fig.8 may be installed. The redundant plaster is removed and the plaster mass is levelled by linear displacement of device 28 for plastering the window and door esconsons according to the reference devices located along the plane of the esconson. After plaster is dried, the reference - a screed board 18 mounted on the outer edge of the esconson - is removed. The reference device is removed by releasing the clamping elements and unscrewing the lock of a fastener for finishing and construction works, after which the surface of the finished esconson 29 is scoured. Using the claimed device of the invention and the tools for plastering makes the esconson plastering process faster, more efficient, and raises its quality and safety. The device according to the invention can also be used for plastering outside corners of columns, bay windows, ceiling beams, wall ledges and for installing perforated painting angle irons on the external plastered corners of structures. Example 3.

Using the device of the invention upon installation of painting steel perforated (slotted) angle irons on the outer comers of structures (Fig. 9 and Fig. 10) during finishing works.

Problems associated with installation of painting angle irons and sometimes impossibility of their installing are caused by the fact that the painting angle irons are made of tough elastic material and are strongly shaped during their manufacture. Normally, the internal angle of painting angle irons is slightly less than 90° and the angles of structures during finishing works in most cases are right or flat. Therefore, painting angle irons should be properly installed on the outer corner of the structure during finishing works and their outer angles properly secured in a perfectly straight line for the entire period until the adhesive hardens.

To install the painting steel slotted angle iron by using the device 7 of the invention, the putty adhesive is applied into the inner corner of the painting angle iron 19, after which the angle iron is installed on the outside of the finished comer and its setting parameters are maintained. Next, the excess of putty adhesive is carefully removed with a spatula. The perforated angle iron 19 is fixed with the screed board 18, which is at least as long as the painting angle iron 19. Complete fixation of the screed board 18 by using the device 17, as it was described above (Fig. 9 shows the device of type "I" and Fig. 10 shows the device of type "L"), is carried out after perfectly levelling off the outside corner of the painting angle iron 19 with the edge of screed board 18 according to the set parameters. The fixed screed board 18 remains in this position until the putty adhesive hardens. Due to the claimed device 17 the screed board 18 and the painting angle iron 19 are securely and properly fixed in a perfectly straight line with the outside corner of the angle iron 19 for the entire period of adhesive hardening.

If the claimed device is used during finishing and construction works a variety of contrivances such as screed board can be applied to result in enhancing quality, speed, reliability and manufacturability of installing painting angles on different structures during finishing works. Consequently it also results in a dramatic reduction of deficiencies and excessive consumption of materials. The production profitability margins increase.

Example 4.

Using the claimed device for laying ceramic tiles, marble and other cladding material on vertical structures during finishing works (Fig. 1 1 ).

One of the main quality criteria applicable to paving of facing tiles can be met only if the horizon level and other installation parameters are strictly observed. In particular, it is essential that the supporting slotted angle irons for the first reference tile row are precisely and reliably secured. This row is fundamental to the high quality of horizontal joints, and represents a supportive and preventive measure to avoid the subsequent rows of glued tiles from sliding until the adhesive is hardened.

The device of the invention, both type Ί" and type "L", ensures fixation of slotted angle irons supporting the first reference row of tiles for the entire period of the adhesive hardening. Simultaneously with the reliable and long-lasting fixation of supporting slotted angle irons it provides for the safety of surface, tools, contrivances and the device itself , which results in their continued and multiple operation.

Fig. 1 shows, in particular, the claimed device 17 of type "I" used to fix the supporting slotted angle irons with a screed board 18, as an example. The pin screw is driven in the drilled ( through-hole on the vertical surface of wall 21 of the finished structure) with a dowel placed below the screed board 18. If this is a drywall surface, the base flange (plate) 14 is additionally used. The screed board 18 is installed and accurately fixed by the device 17 along the traced line by adjusting the clamping elements. Accuracy, reliability and speed of fixing is achieved due to the ability of easily and freely moving the screed board 18 below clamping screws in the range of 15 to 20 mm.

Therefore the claimed device allows to use a screed board or another smooth perforated metal strip of the required length as a support, and due to this fact it allows to ensure high-quality, fast, accurate and reliable paving of ceramic tile, marble, and other cladding material on the vertical surface of finished structures. In addition, it is desirable to use the claimed device during installation of window sills, assembly of in-built safes and cabinets.

Example 5.

Using the device of the invention, type Ί" to install and assemble a safe or a cabinet in a wall niche (Fig. 12).

Installing a cabinet or a safe in the niche wall is performed after levelling off the wall plane by plastering, for example. First, a niche for the future cabinet or safe is made at the specified location of the wall, with boundaries that are on average 15-30 mm larger than the corresponding cabinet or safe, so that the object can be easily placed in a niche (Fig. 12). Parallel to the sides of the niche 25 the required number of the claimed devices 17 of type "I" are installed, by pairs, so that one end of the holder, and a clamping element inside it can be placed in front of the niche 25. Additionally, two planks 23 are used; they should be longer than niche 25, where a safe 24 or a cabinet are installed. The glue of required thickness is applied to the niche 25; its amount should be excessive and squeezed out by the bottom of safe 24 or cabinet when it is mounted. After having placed the safe 24 or cabinet, the planks 23 are installed on each side of the niche 25 with the cabinet or safe inside the niche, so that the ends of each plank are located below the niche 25 on the one side, and above it on the other. Then each of the planks are placed under the relevant clamping elements of devices 17 and then used to gently press the safe 24 or the cabinet into the niche 25 of the wall 21 until the safe or cabinet are installed flush with the wall plane. Vertical level of safe or cabinet 24 of cabinet is achieved by additional wedges 27 that can be installed either at the bottom or on the sides of safe 24 or cabinet. After the glue solidifies the clamps are released , planks 23 are removed; devices 17 are disassembled, and side cracks along the safe 24 perimeter are plastered off. Using the claimed devices 17 allows to install a safe or a cabinet with high precision flush with the wall plane and fixing them firmly and securely. The safe or cabinet cannot move in the niche until the glue hardens.

The claimed device enhances the quality of finishing works by improving correctness of installation and fixation of tools and contrivances. At the same time, it ensures safety and precision of tools and contrivances' fixation, provides the possibility of multiple and multi-stage smooth adjustment. Consequently, installation and removal of tools and contrivances is simplified and their damage is avoided, which contributes to their multiple operation. Profitability margins, safety are increased and duration of decorating and finishing works is reduced.