GB2186903A

GB2186903A - Ladder levelling device

Info

Publication number: GB2186903A
Application number: GB08604741A
Authority: GB
Inventors: Terence Henry Norris; Robert Rheumer
Original assignee: Individual
Current assignee: Individual
Priority date: 1986-02-26
Filing date: 1986-02-26
Publication date: 1987-08-26
Also published as: GB8604741D0

Abstract

A ladder levelling device in which a first tray like member 14 rests on the ground and is pivoted at 20 to a second tray like member 12 which can be adjusted to a truly horizontal position by means of screw 36. A spirit level 32 facilitates the adjustment. The tray 12 has a pair of recesses to receive the bottom ends of the ladder, one of the recesses being wide to suit ladders of different widths. <IMAGE>

Description

SPECIFICATION Ladder levelling device According to the invention a ladder levelling device comprises a pair of members pivoted together and means for preventing pivoting of the members in at least one direction; one of the members having ladder foot receiving areas and the other of the members having one or more ground- engaging areas.

The ladder receiving areas may comprise recesses in one of the members, dimensioned to receive the respective ladder feet. Prefera bly one recess is narrow and the other wide, so as to accommodate ladders having stiles of similar dimensions but at any of a range of different spacings, corresponding to ladders having different rung lengths.

The prevention means may comprise a screw engaged with a nut fixed to one of the members and with its end abutting against the other of the members.

Preferably level indication means such as a spirit level is provided to enable the device to be adjusted appropriately.

One presentiy preferred embodiment of the invention is more particularly described by way of example and with reference to the accompanying drawing in which: Figure 1 is a side elevation of the device in use; Figure 2 is a plan view of the device of Fig.

1.

Referring to the drawings, the device comprises a pair of shallow tray-like members 10, 12 conveniently made as metal pressings with welded corners in the interest of strength and rigidity. These tray-like members are located mouth to mouth so that the base 14 of the tray 10 is located downwardly and the planar area 16 of the tray 12 is located upwardly as seen in Fig. 1. The two trays are pivoted together upon the axis 18 by means of a spindle or a pair of co-axial rivets or like 20.

The planar area 16 is provided with a pair of ladder receiving recesses 22, 24 which in the illustrated version comprise platforms parallel with the planar area 24 at a lower level, so that the bottom ends 26 of the ladder stiles can rest on those platforms and be confined against movement by the periphery of the apertues cut in the planar area 24.

The recess 22 is dimensioned slightly larger than the cross-section of the stile 26 which is to be received therein, but the recess 24 is substantially wider allowing the corresponding stile to be received in the recess at any of a number of different positions, corresponding to ladders having different rung 28 lengths.

A window 30 is cut in the planar area 24 to enable a spirit level 32 to be viewed.

The tray-like member 10 may be provided with feed 34 for ground engagement or alternatively the planar area 14 may be aliowed to lie directly on the ground.

A screw 36 is provided engaged in nut 38 fixed to the one member so that when the screw is turned its tip 40 is moved towards or away from the inside of the base 14 of the member 10.

It will be appreciated that in use, the device is piaced on the ground at a location where the ladder is to be used. The screw 36 is turned to pivot the members 10, 12 for example to the position illustrated in Fig. 1, and this adjustment is continued until it can be seen that the part 12 is level. The spirit level assists in this. When it is level, the ladder can be located in the recess and used safely.

1. A Ladder Levelling Device comprising a pair of members pivoted together, and means for preventing pivoting of the members in at least one direction, one of the members having ladder foot receiving areas and the other of the members having one or more ground engaging areas.

2. A ladder levelling device as claimed in claim 1 wherein the ladder receiving areas comprise recesses in one of the members.

3. A device as claimed in claim 2 wherein a pair of said recesses are provided, one of the recesses being narrow and the other relatively wide, so as to accomodate ladders having styles of similar dimensions but having different rung lengths.

4. A device as claimed in any proceeding claim wherein the means for preventing pivoting of the members in one direction comprise a screw engaged with a nut fixed to one of the members and with its end abutting against the other of the members.

5. A ladder levelling device as claimed if any proceeding claim wherein a spirit level is fixed to one of the members to assist in levelling.

8. A ladder levelling device comprising a pair of shallow tray like members made of metal pressings and located mouth to mouth the trays being pivoted together along one lateral edge, one of the members being provided with a nut, and a screw extending through the nut and abutting the other of the members for limiting pivoting of the trays relative to one another in one direction, and the member provided with the nut being further provided with a pair of recesses, one adjacent said lateral edge and the other adjacent the opposite lateral edge, the recesses being for receiving the feet of a ladder.

7. A ladder levelling device substantially as described with reference to the accompanying drawing.

**WARNING** end of DESC field may overlap start of CLMS **.

Claims

**WARNING** start of CLMS field may overlap end of DESC **. SPECIFICATION Ladder levelling device According to the invention a ladder levelling device comprises a pair of members pivoted together and means for preventing pivoting of the members in at least one direction; one of the members having ladder foot receiving areas and the other of the members having one or more ground- engaging areas. The ladder receiving areas may comprise recesses in one of the members, dimensioned to receive the respective ladder feet. Prefera bly one recess is narrow and the other wide, so as to accommodate ladders having stiles of similar dimensions but at any of a range of different spacings, corresponding to ladders having different rung lengths. The prevention means may comprise a screw engaged with a nut fixed to one of the members and with its end abutting against the other of the members. Preferably level indication means such as a spirit level is provided to enable the device to be adjusted appropriately. One presentiy preferred embodiment of the invention is more particularly described by way of example and with reference to the accompanying drawing in which: Figure 1 is a side elevation of the device in use; Figure 2 is a plan view of the device of Fig. 1. Referring to the drawings, the device comprises a pair of shallow tray-like members 10, 12 conveniently made as metal pressings with welded corners in the interest of strength and rigidity. These tray-like members are located mouth to mouth so that the base 14 of the tray 10 is located downwardly and the planar area 16 of the tray 12 is located upwardly as seen in Fig. 1. The two trays are pivoted together upon the axis 18 by means of a spindle or a pair of co-axial rivets or like 20. The planar area 16 is provided with a pair of ladder receiving recesses 22, 24 which in the illustrated version comprise platforms parallel with the planar area 24 at a lower level, so that the bottom ends 26 of the ladder stiles can rest on those platforms and be confined against movement by the periphery of the apertues cut in the planar area 24. The recess 22 is dimensioned slightly larger than the cross-section of the stile 26 which is to be received therein, but the recess 24 is substantially wider allowing the corresponding stile to be received in the recess at any of a number of different positions, corresponding to ladders having different rung 28 lengths. A window 30 is cut in the planar area 24 to enable a spirit level 32 to be viewed. The tray-like member 10 may be provided with feed 34 for ground engagement or alternatively the planar area 14 may be aliowed to lie directly on the ground. A screw 36 is provided engaged in nut 38 fixed to the one member so that when the screw is turned its tip 40 is moved towards or away from the inside of the base 14 of the member 10. It will be appreciated that in use, the device is piaced on the ground at a location where the ladder is to be used. The screw 36 is turned to pivot the members 10, 12 for example to the position illustrated in Fig. 1, and this adjustment is continued until it can be seen that the part 12 is level. The spirit level assists in this. When it is level, the ladder can be located in the recess and used safely. CLAIMS