GB2174069A - Plasterboard-lifter - Google Patents

Abstract

A plasterboard-lifter has a base 10 in the form of a tubular frame which supports a platform 12 in the form of a tubular frame. This platform is raised up variable height rods 15 smoothly by bearings. A lifting mechanism 26 with spring loaded catches 22 is used to lift a sheet of plasterboard or similar ceiling panel on the platform up to required ceiling height where it is held in place until it can be nailed. The lifting mechanism is returned to its lower position to repeat the operation. The device can be dismantled for storage. <IMAGE>

Description

SPECIFICATION Plasterboard-lifter This invention relates to a device which will lift a sheet of plasterboard from floor to ceiling height.

Plasterboard is very heavy material which requires a lot of manhandling and physical strength to lift the board from floor to ceiling. The board then has to be held at ceiling height by two or more persons while it is nailed to the wooden beams.

The above procedure is exhausting, time consuming, and usually frustrating.

According to the present invention there is provided a plasterboard lifter comprising a base, in the form of a tubular frame which can be dismantled. There is a platform provided in the form of a tubular frame which can be dismantled.

The platform can be raised up and down two height adjustable rods by means of a raising mechanism attached to the base.

A specific embodiment of the invention will now be described by way of example with reference to the accompanying drawings in which: Drawing - 1 - shows in perspective the tubular base of the plasterboard lifter with two variableheights rods ready to be placed into the base.

Drawing - 2 - shows in perspective the tubular platform ready to be lowered onto the base.

Drawing - 3 - shows in perspective, the whole lifting device with a sheet of plasterboard shown by a broken line, on the lifting platform ready to be raised upwards.

Drawing - 4- shows in profile, a sheet of plasterboard being raised.

Drawing - 5 - shows in profile, a close up view of the lifting mechanism.

Referring to Drawings 1 - 5 the plasterboard lifter comprises of a base 10 in the form of a five legged tubular frame attached to short 14, and long-rods 15, by bearings 16.

The actual lifting mechanism comprises an adjustable height rod spring-loaded 'catches' 32, means for 'catches' 32 to operate in connection with two bearings 34 and 35 (not shown) two le vers 27 and 28 are provided to operate in conjunction with three pivots 37, 38 and 40 to raise boom 30 up and down vertically.

The base 10 is constructed and assembled (by means not shown) into a rigid tubular frame with five legs 13 to rest on a firm surface as shown in drawing one.

Referring to drawing one, in order for rods 15 to be variable for different ceiling heights small sections of rods 14 are provided to be connected to rods 15 for example by a screw thread (not shown).

Small rods 14 are then secured into feet 13 for example by screw thread. As illustrated in drawing one, the lifting mechanism 26 is lowered in the direction of arrow 20 and secured for example by screw thread or split-pin (not-shown) into base 10.

Referring to Drawing 2, the platform 12 should be constructed (by means not shown) into a rigid tubular frame able to accomadate a full size plasterboard. Means for lifting boom 30 to raise platform 12 is provided by a plank of wood or similar 22 secured to platform 12.

Platform 12 is lowered in direction of arrow 24 and is secured over small rods 14 by bearings 16 comeing to rest over boom 30 of lifting mechanism 26.

Referring back to Drawing one, long rods 15 are then connected to short rods 14 for example by screw thread.

As illustrated in Drawing three, the platform 12 can now be raised by mechanism 26 smoothly by bearings 16 running on rods 15.

Referring to Drawing three, a sheet of plasterboard shown by a broken line 42, is placed in position on platform 12 ready to be raised up to required ceiling height by mechanism 26.

Drawing four shows in profile, a plasterboard 18 raised midway between base 10 and ceiling 44, by lifting boom 30, lifting the platform 12.

The actual lifting mechanism 26, shown by Drawing five is comprised of spring loaded catches 32 which will depress into the mechanism when bearings 34 and 35 are passed over catches 32. A boom 30 is provided to support and push platform 12 (of drawing two) upwards vertically by means of two levers 27 and 28 operating bearings 34 and 35.

The mechanism 26 is operated first by pushing lever 27 downwards in direction of arrow 45. This will cause lever 28 to bear pressure on bearing 34 so causing bearing 35 to be raised upwards utilizing pivot 37. Bearing 34 remains stationary while this happens as one of catches 32 is spring loaded (by means not shown) and stops bearing 34 being forced downwards by the shape of catch 32.

When bearing 35 is raised upwards, spring loaded catches 32 are pushed in as upward motion of bearing 35 causes this. The shape of catch 32 stops bearing 35 slipping downwards by springing out again.

When the lever 27 is pushed upwards in direction of arrow 46 bearing 34 is raised upwards by lever 28 utilizing pivots 38 and 40. Bearing 35 now remains stationary as bearing 34 is raised upwards. The whole operation is repeated until desired height is reached. When plasterboard is in position at ceiling height it can then be nailed.

Means for lowering the lifting device 26 (not shown) can be for example by turning lever 27 in drawing 5 - 180 in direction of arrow 48, thus releasing bearings 34 and 35 from catches 32.

1. A plasterboard-lifter comprising a base, in the form of a tubular frame which can be dismantled. There is a platform provided in the form of a tubular frame which can be dismantled. The platform can be raised vertically up two adjustable rods by means of a height adjustable raising mechanism attached to the base.

2. A plasterboard lifter as claimed in claim one which can lift a sheet of plasterboard or similar

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

Claims (1)

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

   SPECIFICATION Plasterboard-lifter This invention relates to a device which will lift a sheet of plasterboard from floor to ceiling height.

   Plasterboard is very heavy material which requires a lot of manhandling and physical strength to lift the board from floor to ceiling. The board then has to be held at ceiling height by two or more persons while it is nailed to the wooden beams.

   The above procedure is exhausting, time consuming, and usually frustrating.

   According to the present invention there is provided a plasterboard lifter comprising a base, in the form of a tubular frame which can be dismantled. There is a platform provided in the form of a tubular frame which can be dismantled.

   The platform can be raised up and down two height adjustable rods by means of a raising mechanism attached to the base.

   A specific embodiment of the invention will now be described by way of example with reference to the accompanying drawings in which: Drawing - 1 - shows in perspective the tubular base of the plasterboard lifter with two variableheights rods ready to be placed into the base.

   Drawing - 2 - shows in perspective the tubular platform ready to be lowered onto the base.

   Drawing - 3 - shows in perspective, the whole lifting device with a sheet of plasterboard shown by a broken line, on the lifting platform ready to be raised upwards.

   Drawing - 4- shows in profile, a sheet of plasterboard being raised.

   Drawing - 5 - shows in profile, a close up view of the lifting mechanism.

   Referring to Drawings 1 - 5 the plasterboard lifter comprises of a base 10 in the form of a five legged tubular frame attached to short 14, and long-rods 15, by bearings 16.

   The actual lifting mechanism comprises an adjustable height rod spring-loaded 'catches' 32, means for 'catches' 32 to operate in connection with two bearings 34 and 35 (not shown) two le vers 27 and 28 are provided to operate in conjunction with three pivots 37, 38 and 40 to raise boom 30 up and down vertically.

   The base 10 is constructed and assembled (by means not shown) into a rigid tubular frame with five legs 13 to rest on a firm surface as shown in drawing one.

   Referring to drawing one, in order for rods 15 to be variable for different ceiling heights small sections of rods 14 are provided to be connected to rods 15 for example by a screw thread (not shown).

   Small rods 14 are then secured into feet 13 for example by screw thread. As illustrated in drawing one, the lifting mechanism 26 is lowered in the direction of arrow 20 and secured for example by screw thread or split-pin (not-shown) into base 10.

   Referring to Drawing 2, the platform 12 should be constructed (by means not shown) into a rigid tubular frame able to accomadate a full size plasterboard. Means for lifting boom 30 to raise platform 12 is provided by a plank of wood or similar 22 secured to platform 12.

   Platform 12 is lowered in direction of arrow 24 and is secured over small rods 14 by bearings 16 comeing to rest over boom 30 of lifting mechanism 26.

   Referring back to Drawing one, long rods 15 are then connected to short rods 14 for example by screw thread.

   As illustrated in Drawing three, the platform 12 can now be raised by mechanism 26 smoothly by bearings 16 running on rods 15.

   Referring to Drawing three, a sheet of plasterboard shown by a broken line 42, is placed in position on platform 12 ready to be raised up to required ceiling height by mechanism 26.

   Drawing four shows in profile, a plasterboard 18 raised midway between base 10 and ceiling 44, by lifting boom 30, lifting the platform 12.

   The actual lifting mechanism 26, shown by Drawing five is comprised of spring loaded catches 32 which will depress into the mechanism when bearings 34 and 35 are passed over catches 32. A boom 30 is provided to support and push platform 12 (of drawing two) upwards vertically by means of two levers 27 and 28 operating bearings 34 and 35.

   The mechanism 26 is operated first by pushing lever 27 downwards in direction of arrow 45. This will cause lever 28 to bear pressure on bearing 34 so causing bearing 35 to be raised upwards utilizing pivot 37. Bearing 34 remains stationary while this happens as one of catches 32 is spring loaded (by means not shown) and stops bearing 34 being forced downwards by the shape of catch 32.

   When bearing 35 is raised upwards, spring loaded catches 32 are pushed in as upward motion of bearing 35 causes this. The shape of catch 32 stops bearing 35 slipping downwards by springing out again.

   When the lever 27 is pushed upwards in direction of arrow 46 bearing 34 is raised upwards by lever 28 utilizing pivots 38 and 40. Bearing 35 now remains stationary as bearing 34 is raised upwards. The whole operation is repeated until desired height is reached. When plasterboard is in position at ceiling height it can then be nailed.

   Means for lowering the lifting device 26 (not shown) can be for example by turning lever 27 in drawing 5 - 180 in direction of arrow 48, thus releasing bearings 34 and 35 from catches 32.

   1. A plasterboard-lifter comprising a base, in the form of a tubular frame which can be dismantled. There is a platform provided in the form of a tubular frame which can be dismantled. The platform can be raised vertically up two adjustable rods by means of a height adjustable raising mechanism attached to the base.

   2. A plasterboard lifter as claimed in claim one which can lift a sheet of plasterboard or similar ceiling panel up to variable ceiling heights and hold it there until it can be nailed.

   3. A plasterboard lifter as claimed in claim one or claim two wherein catchment means are provided to arrest the downward thrust of the raising mechanism bearings.

   4. A plasterboard-lifter as claimed in claim 3 wherein the platform is supported on bearings.

   5. A plasterboard lifter as described in claims 1 - 4 which will raise a ceiling panel of various dimentions.

   6. A plasterboard lifter as claimed in claims 1 5 which will raise a sheet of plasterboard or similar ceiling panel vertically up to variable heights keeping the ceiling panel in a horizontal position.

   7. A plasterboard-lifter substantially described herein with reference to the accompanying drawings.

   Amendments to the claims have been filed, and have the following effect: (a) Claim 1 above has been textually amended.

   (b) New or textually amended claims have been filed as follows:

   1. A plasterboard-lifter comprising a base in the form of a tubular, rectangle shaped frame, with a supporting leg attached in each 90- degree corner.

   Two of the said legs are threaded to receive screw threads of a number of short tubular rods used in different lengths to facilitate varying heights. A fifth leg to support the lifting mechanism is situated opposite the two threaded base legs, and is also threaded to receive short threaded heightvarying rods.

   A tubular rectangle shaped platform frame with two guide bearings attached, is received on to the base, directly over the short height varying rods.

   Two main threaded tubular rods are accomadated in the base short rods, the main rods being a vertical guide for the ceiling-panel platform.

   The lifting mechanism is basically a jacking device able to raise or lower the platform, by means of a weight supporting boom attached to, and propelled by, guided bearings, pivoted levers, and spring-loaded "catches'. The said "catches" being fixed into a height varying, mechanism guide rod, the guide rod being a vertical guide for the lifting mechanism.

   The device as a whole, including platform frame and base frame, should be easily dismantled for storage.