DE29614304U1 - Device for removing and transferring distance measurements, especially when laying composite blocks and the like. - Google Patents

Description

Manfred Lappessen LA9607GB

Wollbacher Strasse 2
79539 Loerrach

Device for taking and transferring distance measurements, especially when laying interlocking stones etc.

Description

The invention relates to a device for taking and transferring distance measurements, in particular when laying composite stones and the like on any limited surface,

In construction, interlocking stones are laid individually by hand or by machine in pallets, then sanded and tamped down.

Difficulties always arise at the edge or edges of the area to be covered, e.g. on a house wall, on property or street boundaries, etc. The stones, whether laid individually or in pallets, are always aligned at right angles to one another. Measurements must be taken at boundaries and the stones must be cut accordingly in order to obtain a clean edge while maintaining as even a joint as possible to the boundary, e.g. a house wall. This work can only be carried out by a specialist. Measurements must be taken for each stone at several, but at least two, points in order to determine the remaining distance between the whole stones already laid and, for example, a house wall; then the measurements must be transferred to the stone to be fitted and marked, taking into account the joint to be provided or the tolerance required for laying, before this can be cut using a stone splitter or stone saw, which can be operated by hand or hydraulically. These various work steps require a lot of time, especially when it comes to slanted borders or curves that are not at right angles. This also always results in a loss of stone material, the edges are often not clean or break when the stones are laid. Taking and transferring the measurements is a source of errors.

The aim of the invention is to create a device with which this work can be carried out more precisely but still more easily and with less time and less material loss. The measuring of the distance remaining between already laid stones and a boundary and the transfer of this measurement and marking of a line for cutting should be possible, while avoiding measurement errors and, if possible, with

taking into account the tolerance to be observed for the joint, can be carried out in only one closed operation per stone.

According to the invention, this is achieved in that a sliding rod, which projects beyond a base plate by a minimum amount, can be moved longitudinally against a restoring force and can be locked in any position that can be reached, in that an angle measure is also pivotably mounted in a horizontal plane at the front end of the sliding rod and can be locked in any angular position, and in that a stop in the form of a spacer bolt, which projects downwards, is arranged at the front end of the base plate.

With this device, the distance between the last stone laid in one piece and a border and also the angle of the border to the stones aligned at right angles to each other can be measured in one measuring process and then transferred without further measures and without repeating the measurement to the stone to be fitted, which can then be cut and fitted according to the marking line taken. By placing the spacer bolt protruding downwards with its back on the last stone laid in one piece when measuring the distance and the angle and with its front on the stone to be cut when transferring the measurements, a constant tolerance for a planned joint is automatically achieved.

The thickness of the spacer bolt in the longitudinal or measuring direction of the device therefore preferably corresponds to the joint tolerance to be observed when laying interlocking stones at boundaries.

The angle measurer can consist of a plate extending transversely to the sliding rod, which is connected to the front end of the sliding rod via a projection. It can be advantageously locked in any angular position, e.g. by means of a wing screw or another known means.

In the initial position of the device, the sliding rod protrudes beyond the base plate by at least the length of a composite stone to be laid.

The sliding rod is advantageously guided on the base plate using rollers.

According to a preferred embodiment of the invention, the sliding rod consists of a tube, on the circumference of which four milled recesses are provided evenly distributed, in which rollers arranged in pairs one above the other on the base plate on both sides of the sliding rod and rotating about axes can roll.

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Preferably, the push bar is flattened on its upper side and provided with a roughening or ribbing to which a brake block can be brought into operative connection, whereby the push bar can be locked in any accessible position.

According to the preferred embodiment, the tube forming the sliding rod has a longitudinal slot on its underside through which a pin attached to the base plate protrudes into the interior of the tube; a tension coil spring is connected to the pin on the one hand and to a stop plate closing the tube at the rear end on the other hand, which is relaxed in the initial position of the device and can be tensioned, i.e. stretched, by a backward movement of the sliding rod in relation to the base plate.

The tension coil spring can, for example, be stretchable from approx. 10 cm in length in the relaxed state to approx. 35 cm.

Since the device is clamped between a border and a stone that was last laid in one piece during the measuring process, in order to be able to release the device from this clamp, a relative movement between the base plate and the spacer bolt against a restoring force is possible, which is equivalent to a movement of the spacer bolt towards the front end of the base plate. After the device is released from the clamp, this short movement of e.g. 1/2 or 1 cm is immediately reversed by the restoring force.

For this purpose, a cutout for the guide pin can be provided at the front end of the base plate and the guide pin can have a guide plate on its upper side, which is guided in rails provided on both sides of the cutout so that it can be moved longitudinally against a restoring force.

Preferably, when the device is not operated, the sliding rod is locked by the active connection of the brake block with the knurling and this active connection can only be released for the purpose of moving the sliding rod, so that there is actually a permanent lock and the lock does not require any special operation at the end of the measuring process, and therefore cannot be forgotten.

For this purpose, a pressure rod acting on the brake pad in the direction of action can be connected to one end of a two-armed lever and an actuating rod that can be actuated against a restoring force can be connected to the other end of the two-armed lever, which only needs to be actuated to release the locking mechanism.

The actuation mechanism for the brake pad can be housed in a handle which is part of a housing which surrounds the sliding rod in the area of the base plate and is connected to it and is open on both sides in the longitudinal direction.

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The control rod then protrudes a certain amount from the handle and can be designed to be operated with the thumb.

Other design solutions for the locking mechanism and its operating mechanism are conceivable and are at the discretion of the specialist.

In the following, a preferred embodiment of the invention is described in more detail using the attached drawings as an example.

Fig. 1 shows a plan view of the preferred embodiment of the invention without the outer housing;

Fig. 2 shows the embodiment according to Fig. 1 in side view; Fig. 3 shows the sectional view along the line A-A in Fig. 2;

Fig. 4 shows a detail of the top view of the guide for the spacer bolt at the front end of the base plate;

Fig. 5 shows the view in the direction of arrow Q in Fig. 4;

Fig. 6 shows the principle of a possible locking of the push rod on the device according to the invention.

A sliding rod 3 is arranged on an elongated base plate 1, guided by four pairs of guide rollers 2, and can be moved in the longitudinal direction. The sliding rod 3 is significantly longer than the base plate 1 and has a stop plate 4 at its rear end, which can come into contact with the base plate 1 or with a housing surrounding the device in the area of the base plate 1 (not shown in Figs. 1 and 2). An angle measuring device 5 is connected in an articulated manner to the front end of the sliding rod 3, which protrudes beyond the base plate 1, and can pivot about an axis R in a horizontal plane. The angle measuring device 5 essentially consists of a plate 6 at an angle to the sliding rod 3 with a projection 7 for linking to the sliding rod 3. The angle measuring device 5 can advantageously be locked in any angular position to the sliding rod 3, e.g. by means of a wing screw (not shown in the drawing). The plate 6 extends in the horizontal direction and at an angle to the push rod 3 to such an extent that a marking line can be drawn on it over the entire width of a stone that is to be cut. In the vertical direction it should end downwards at least just above the base plate 1 so as not to be behind when drawing a marking line.

According to the embodiment of the invention described here, the push rod 3 is designed as a round tube (see also

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Fig.3), which has milled recesses 8 evenly distributed along its circumference in the longitudinal direction, in which the guide rollers 2 can roll. The guide rollers 2 are mounted in pairs one above the other and in four pairs on axes 12 that are firmly connected to the base plate. On its upper side, the round push rod 3 is flattened and provided with a roughened surface or, for example, sawtooth-shaped ribbing 9. This works together with a brake block 10 to lock the push rod 3 in any longitudinally displaced position relative to the base plate 1 or to a housing, which can be provided with a suitable brake pad or even with a ribbing itself.

As can be seen from Fig. 2, the push rod 3 can be moved lengthways on the base plate 1 against the force of a (tension) coil spring 13. For this purpose, the tube forming the push rod 3 in the embodiment shown has a longitudinal slot 11 on its underside through which a pin 14 attached to the base plate 1 protrudes into the interior of the push rod 3 (see also Fig. 3). A coil spring 13 is arranged inside the push rod 3, one end of which is firmly connected to this pin 14 and the other end of which is firmly connected to the stop plate 4 that closes the push rod 3 at the rear end. When the device is not in use, the coil spring 13 is relaxed; when the device is used, it is tensioned by pulling and can be stretched, for example, from approx. 10 cm to approx. 35 cm. Both the longitudinal slot 11 for receiving the pin 14 and the ribbing 9 on the upper side extend in the direction of the front end of the push rod 3 at least over the entire stroke that the push rod 3 is to make in relation to the base plate 1.

At the front end of the base plate 1, a downwardly projecting spacer bolt 15 is attached, the thickness of which corresponds to the tolerance dimension that must be observed when laying interlocking stones for the provision of a joint between a boundary and the stone to be fitted.

The device is used when a certain area is already covered with interlocking stones up to a boundary, e.g. a house wall, and the last stone is to be fitted between the boundary and the laid stones. The device is then placed between the boundary and the laid stones so that the plate 6 of the angle measure 5 is against the boundary or is at an angle to it and the back of the spacer bolt 15 is against the last stone laid in its entirety; the push rod 3 is moved backwards in relation to the base plate 1 under tension of the coil spring 13, whereby the coil spring 13 is tensioned, i.e. stretched; the angle measure 5 is positioned at an angle to the push rod 3 in accordance with the course of the boundary. In the respective position reached in this way, the slides are

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The rod 3 is locked using the brake block 10 and the angle measure 5 is locked using a wing screw, for example. After the measurement has been taken, the device is placed on the stone to be cut so that the spacer bolt 15 now rests with its front side on the rear edge of the stone to be fitted, which remains at a right angle, after which the angle measure 5 immediately indicates the course of the marking line for cutting the stone. By placing the spacer bolt 15, whose thickness corresponds to the gap that must be maintained between the border and the last stone to be laid, on the latter with its back when measuring between the border and the stone already laid, and on the rear edge of the stone to be cut with its front side when transferring the measurement to the stone, the correct tolerance dimension for maintaining the gap is automatically taken into account and maintained. The special measuring and marking of the tolerance, as is still required according to the state of the art before cutting the stone, is no longer necessary, which at the same time eliminates a source of error, e.g. an unclean edge.

When taking the measurement, the device is clamped with its angle measure 5 and the spacer bolt 15 between the boundary and the last stone laid in its entirety. In order to be able to release the device from this clamped position, it is useful if a relative movement between the base plate 1 or the entire device supported by it and the spacer bolt 15 by a small amount (e.g. 1/2 to 1 cm) is possible in the sense of shortening the measured distance against a restoring force.

According to Fig. 4 and 5, the base plate 1 has a cutout 16 for the spacer bolt 15 at its front end; this is provided on its top with a guide plate 17, with which it is guided in rails 18 provided on both sides of the cutout 16 on the top of the base plate 1 in the longitudinal direction against a restoring force, e.g. a tension spring 20 supported between the guide plate 17 and a stop 19 connected to the rails 18. According to an alternative, the guide plate 17 with the spacer bolt 15 could also be guided in rear sections of the base plate 1 on both sides of the cutout 16. A stop for the guide plate 17 expediently prevents it, together with the spacer bolt 15, from sliding forwards out of its guide.

In Fig. 4, the spacer bolt 15 together with its guide plate 17 is in an intermediate position between its measuring position, in which it is normally held in place by the relaxed tension spring 20 for taking and transferring the measurement at the end of the cutout 16, and the release position, into which it can be moved by a short backward movement of the base plate 1 or the entire device while stretching the

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Tension spring 20 can be brought. Fig. 5 shows the guidance of the spacer bolt 15 in the direction of view Q in Fig. 4. Structurally other solutions are possible without deviating from the actual invention.

Fig. 6 shows schematically the principle of a possible locking of the push rod 3 in relation to the base plate 1 or a housing 21 connected to the device in the area of the base plate 1 and to the housing 21. The housing 21 is open at the front and back to allow the longitudinal displacement of the push rod 3. The base plate 1 simultaneously forms the underside of the housing 1. On its upper side, a recess is provided in the housing 21 which accommodates the brake block 10. With its underside, which can have a brake lining or a ribbing, the brake block 10 rests on the ribbing 9 of the push rod 3 (see Fig. 2), while on its

21, a force normally acts in the direction of arrow P on the upper side protruding by a certain amount, so that a permanent braking effect or locking is achieved between the brake block 10 and the push rod 3. According to a proposal of the invention, the force in the direction of arrow P is applied via a two-armed lever 22, at one end of which a pressure rod 23 directed perpendicularly to the brake block 10 is hinged and the other end of which is connected to an actuating rod 24, which can be pressed down against a restoring force, e.g. a compression spring 25.

Normally, the brake block 10 is in the locking position. If the push rod 3 is to be moved in the housing 21 and in relation to the base plate 1 in order to take a measurement between a boundary and the last stone laid, the actuating rod 24 is pressed down against the force of the compression spring 25 so far that the two-armed lever

22 the brake block 10 is raised sufficiently to release the lock. The push rod 3 is then moved into the position corresponding to the amount to be removed with the brake block 10 released and the actuating rod 24 is released again so that it is moved upwards again by the force of the compression spring 25 and as a result the brake block 10 is brought back into the active position via the two-armed lever 22 and the push rod 23, the push rod 3 is thus locked in the new position.

As indicated in Fig. 6, the actuating mechanism for locking or releasing the locking can advantageously be housed in a handle 26 provided on the housing 21 and the end of the actuating rod 24 protruding upwards from the handle 26 can be designed for actuation with the thumb.

In order to release the device from the clamped position between the boundary and the last laid stone after the measuring process, the entire device is moved with the push rod 3 locked using the handle.

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fes 26 is moved backwards, i.e. away from the boundary, ζ.βΛ of a house wall, whereby the spacer bolt 15 resting on the last stone laid remains in place and its guide plate 17 slides in the rails 18 (see Fig. 4 and ₅ ). After the device is released, the tension spring 20 restores the original position of the spacer bolt 15 on the device and the measurement taken can be transferred directly to the stone to be cut, whereby, as already mentioned, the tolerance for a joint to be maintained is automatically included.

With the new device, all common interlocking stones can be cut cleanly and then laid; slopes and curves can also be put together cleanly. As the measurement taken can be transferred immediately and with automatic tolerance consideration, not only is there a considerable saving of time during the work process, it also eliminates a source of error that exists in multiple measurements, thus achieving clean edges and avoiding unnecessary stone waste, thus resulting in a not insignificant saving of material.

Claims (1)

· Manfred Lappessen LA9SQ7GA Wollbach^r Straße 2
79539 Loerrach Device for taking and transferring distance measurements, especially when laying interlocking stones etc. Protection claims 1. Device for taking and transferring distance measurements, especially when laying composite stones and the like on any limited area, characterized/ that on a base plate (1) a sliding rod (3) which projects forwards by a minimum amount can be moved lengthwise against a restoring force and can be locked in any position that can be reached, - that at the front end of the sliding rod (3) an angle measurer (5) is pivotably mounted in a horizontal plane and can be locked in any angular position and that at the front end of the base plate (1) a stop in the form of a spacer bolt (15) projecting downwards is arranged, 2. Device according to claim 1, _{characterized} in that the thickness of the spacer bolt (15) in the longitudinal or measuring direction of the device corresponds to the joint tolerance to be observed when laying interlocking stones at boundaries. 3. Device according to claim 1 or 2 _f , characterized in that the angle measurer (5) consists of a plate (6) extending transversely to the sliding rod (3) which is connected in an articulated manner to the front end of the sliding rod (3) via a projection (Pgr;), 4. Device according to one of claims 1 to 3, characterized in that in the starting position of the device the push rod (3) projects beyond the base plate (1) by at least the length of a composite stone to be laid. 5.- Cooking device according to one of the preceding claims, characterized in that the push rod {3) is guided on the base plate {1) by means of rollers {2). 5. Device according to one of the preceding claims/ characterized in that the push rod (3) consists of a tube, evenly distributed around the circumference of which four Milled recesses (8) are provided in which rollers (2) arranged one above the other in pairs and rotating about axes (12) can roll on both sides of the push rod (3) on the base plate (1). 7. Device according to one of the preceding claims, characterized in that the push rod (3) is flattened on its upper side and is provided with a roughening or ribbing (9) with which a brake block (10) can be brought into operative connection. 8. Device according to claim 6 or 7, characterized in that the tube forming the push rod (3) has a longitudinal slot (11) on its underside through which a pin (14) fixed to the base plate (1) extends into the interior of the tube, and that a tension coil spring (13) is connected to the pin (14) on the one hand and to a stop plate (4) closing the tube at the rear end on the other hand, which is relaxed in the initial position of the device and can be tensioned by a backward movement of the push rod (3) in relation to the base plate (1). 9. Device according to claim 8, characterized in that the tension coil spring {13) is stretchable from about 10 cm in length to about 35 cm in the relaxed state. 10. Device according to one of the preceding claims, characterized in that a relative movement between the base plate (1) and the spacer bolt (15) is possible against a restoring force which is equivalent to a movement of the spacer bolt (15) in the direction of the front end of the base plate (!). 11. Device according to claim 10, characterized in that a cutout {16) for the guide bolt {15) is provided at the front end of the base plate {!) and the guide bolt {±5) has a guide plate {17) on its upper side, which is guided in rails (18) provided on both sides of the cutout {16) so as to be displaceable in the longitudinal direction against a restoring force. 12. Device according to one of the preceding claims, characterized in that in the non-actuated state of the device the sliding rod {3) is locked by the operative connection of the brake block {10) with the corrugation {9) and this operative connection can be released to move the sliding rod {3). 13. Device according to claim 12, characterized in that with one end of a two-armed lever (22) a pressure rod acting on the brake pad (10) in the direction of action .,**..· LA9606GA {23) and an actuating rod (24) that can be actuated against a restoring force is connected to the other end of the two-armed lever {22). 14» Device according to claim 13, characterized in that the actuating mechanism for the brake pad (10) is housed in a handle (26) which is part of a housing (21) which surrounds the actuating rod (3) in the area of the base plate (1) and is connected to it and is open on both sides in the longitudinal direction, the actuating rod (24) protruding from the handle by a certain amount and is designed for actuation with the thumb.