GB1566676A – Apparatus for removing elongate tubular light sources from oferhead fittings
– Google Patents
GB1566676A – Apparatus for removing elongate tubular light sources from oferhead fittings
– Google Patents
Apparatus for removing elongate tubular light sources from oferhead fittings
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Publication number
GB1566676A
GB1566676A
GB1360378A
GB1360378A
GB1566676A
GB 1566676 A
GB1566676 A
GB 1566676A
GB 1360378 A
GB1360378 A
GB 1360378A
GB 1360378 A
GB1360378 A
GB 1360378A
GB 1566676 A
GB1566676 A
GB 1566676A
Authority
GB
United Kingdom
Prior art keywords
cradle
cradles
tube
fitting
cable
Prior art date
1978-04-06
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB1360378A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LEVERETT R
Original Assignee
LEVERETT R
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
1978-04-06
Filing date
1978-04-06
Publication date
1980-05-08
1978-04-06
Application filed by LEVERETT R
filed
Critical
LEVERETT R
1978-04-06
Priority to GB1360378A
priority
Critical
patent/GB1566676A/en
1980-05-08
Publication of GB1566676A
publication
Critical
patent/GB1566676A/en
Status
Expired
legal-status
Critical
Current
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Classifications
B—PERFORMING OPERATIONS; TRANSPORTING
B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
Description
(54) APPARATUS FOR REMOVING ELONGATE TUBULAR LIGHT SOURCES
FROM OVERHEAD FITTINGS
(71) I, RICITARD JOHN LEVERETS, a
British Subject, of Church Road, Otley, Nr.
Ipswich, Suffolk, do hereby declare the invention, for which I pray that a patent may be granted to me, and the method by which it is to be performed, to be particularly described in and by the following statement: The invention relates to apparatus for removing elongate tubular light sources from overhead fittings, more particularly overhead fittings of the kind which are open on their underside and include two ends which are movable relative to one another longitudinally of the light source to release the light source from the fitting.
The invention provides an apparatus for removing an elongate tubular light source from an overhead fitting of the kind described, the apparatus comprising frame means supporting at least one first cradle and including a portion extending from the cradle or cradles for raising the cradle or cradles overhead in which releasing means is provided movable relative to the frame means towards and away from the or at least one of the cradles and remote control means are provided for moving the releasing means, the arrangement being such that, in use, the cradle or cradles support the light source at points along its length and movement of the said releasing means is effective to release the light source from the fitting.
Preferably the releasing means comprises a second cradle mounted on the frame means in aligned spaced apart relationship with the or each first cradle. The second cradle may be supported by an operating arm pivotally mounted on the frame means, pivotal movement of the operating arm being effective to move the second cradle towards and away from the or at least one of the first cradles. The operating arm may be an elongate member pivotal at a point intermediate its ends which carries a counter weight on the side of the pivot remote from the second cradle for urging the operating arm into an upright position.
Preferably the remote control means comprises a cable connected to the operating arm and a reel for extending and retracting the cable.
Preferably the said portion of the frame means is an elongate handle which may be telescopic. Preferably the or each cradle is supported by an elongate rod connected to an end of the handle. The rod may be rotatable about its longitudinal axis relative to the handle.
Preferably the reel is mounted adjacent the end of the handle remote from the rod.
Preferably there are two first cradles supported in adjacent spaced relationship on a rocker arm pivotally mounted on the frame means.
Further features and advantages of the invention will become apparent from the following description, by way of example, of a preferred embodiment of apparatus for removing fluorescent tubes from light fittings, the description being read with reference to the accompanying drawings in which: – Figure 1 is a perspective view of apparatus according to the invention, and
Figure 2 is a longitudinal section through a light fitting showing the apparatus of
Figure 1 in use.
Referring first to Figure 1, apparatus for removing fluorescent tubes from light fittings comprises a generally T-shaped frame ]0 supporting cradles 11 and 12.
The frame 10 consists of an elongate handle 14 fitted into the hollow upright of a T-shaped connector 15 and rigidly fixed thereto by a pin (not shown) and an elongate tubular bar 16 extending through the hollow cross-bar of the connector 15.
Locking collars 17 prevent axial movement of the bar 16 relative to the connector 15 but the bar 16 is rotatable relative to the connector. The handle 14 is telescopic consisting of an inner tube 19 slidable in an outer tube 20. The inner tube is fixed to the connector 15 and the outer tube may be fixed relative to the inner tube by a clamp 21, acting on a split end of the outer tube.
Fixed perpendicular to one end of the bar 16 is an upright support arm 23 with a counter-weight 24 at its lower end. A rocker arm 25 is pivoted at its mid-point on the upper arm of support arm 23 and carries at its ends, the U-sectioned cradles 11 which are rigidly fixed to the rocker arm. Each cradle 11 is lined with rubber strips 26 and is designed to be a friction fit around a fluorescent light tube.
An operating arm 28 is pivoted on the end of bar 16 remote from the support arm 23 and has a counterweight 29 at its lower end and the bracket 12 at its upper end.
The bracket 12 is U-shaped and includes flange plates 30 extending from the arms of the U in a direction away from the cradles 11. Both cradles 11 and cradle 12 are aligned.
The cradle 12 is movable towards and away from the cradles 11 by pivotal movement relative to the bar 16 and is so moved by an operating cable 32 attached to the operating arm 28 between its pivot and the counterweight 29. The cable 32, which may be a Terylene!Nylon rope, steel wire or any other suitable material, passes around a bracket 33 fixed to the upright of the connector 15 and its free end is fixed to a reel 34 mounted with its axis perpendicular to the cable. (Terylene and Nylon are
Registered Trade Marks). The reel 34 is rotatably mounted on a bracket 35 fixed to the lower end of the outer tube 20 of handle 14 and is provided with a handle 36 for winding the cable on and off the reel to pivot the operating arm 28.
The use of the apparatus will now be described with reference to Figure 2 as well as Figure 1.
As shown in Figure 2, the apparatus described is particularly suitable for removing an elongate fluorescent light tube 38 from a ceiling mounted fitting 39 (of known type! which is open on its underside and has spring-loaded ends 40, 41 which retain the tube in position.
First, the handle 14 is extended to a length which will permit the cradles 11, 12 to be brought into contact with a fluorescent tube to be removed by a user of the apparatus. The clamp 21 is tightened to fix the handle at the selected length.
The apparatus is then lifted by the user until the cradles 11 come into contact with and engage the tube. During this lifting, the cradles remain upright under the action of the counterweight 24, 29 and the cable 32 is slack. The cradles 11 are engaged with a portion of the fluorescent tube spaced from one end 40 of the fitting so that the cradle 12 is adjacent the other end of the fitting.
Next, the handle 36 is manually rotated by the user to wind in the cable 32 and pivot the operating arm 28 so that the cradle 12 moves outwardly and the flange plates 30 engage the end 41 of the light fitting. Continued rotation of the reel 34 moves the cradle 12 further outwards to force the end 41 outwards and release the end of the fluorescent tube which falls into the cradle 12. The reel is then released to slacken the cable 32 and releases the end 41 and the tube 38 is lowered from the fitting supported by the three cradles 11, 12.
To replace a fluorescent tube in the light fitting, the process is reversed. The apparatus, with a tube held in the cradle, is raised into proximity with a light fitting and the end of the tube remote from cradle 12 is engaged in the end 40 of the fitting. Reel 34 is then used to wind in the cable 32 and move cradle 12 outwards to force outwards the end 41 of the fitting in which the tube is not engaged. The handle 14 is then manipulated to raise the cradle 12, and thus the other end of the tube, into alignment with the end 41. Next, the cable is wound out until it is slack and the end 41 moves inwards under the action of its spring to engage the tube end
The apparatus is then pulled away from the tube and lowered to ground level again.
During this pulling movement, the disengagement of the frictional contact between cradles 11 and the tube applies a sufficient downwards force to the tube to ensure that it is correctly engaged by the ends 40, 41 of the light fitting and will not subsequently fall out.
It will be appreciated that the invention is not limited to the described embodiment to which various modifications may be made. For example there may be only one cradle 11 rather than two. Furthermore, the operating arm 28 may be slidably rather than pivotally mounted on the rod 16.
WHAT I CLAIM IS: – 1. Apparatus for removing an elongate tubular light source from an overhead fitting of the kind described, the apparatus comprising frame means supporting at least one first cradle and including a portion extending from the cradle or cradles for raising the cradle or cradles overhead in which releasing means is provided movable relative to the frame means towards and away from the or at least one of the cradles and remote control means are provided for moving the releasing means, the arrangement being such that, in use, the cradle or cradles support the light source at points along the length and movement of the said releasing means is effective to release the light source from the fitting.
**WARNING** end of DESC field may overlap start of CLMS **.
Claims (12)
**WARNING** start of CLMS field may overlap end of DESC **. clamp 21, acting on a split end of the outer tube. Fixed perpendicular to one end of the bar 16 is an upright support arm 23 with a counter-weight 24 at its lower end. A rocker arm 25 is pivoted at its mid-point on the upper arm of support arm 23 and carries at its ends, the U-sectioned cradles 11 which are rigidly fixed to the rocker arm. Each cradle 11 is lined with rubber strips 26 and is designed to be a friction fit around a fluorescent light tube. An operating arm 28 is pivoted on the end of bar 16 remote from the support arm 23 and has a counterweight 29 at its lower end and the bracket 12 at its upper end. The bracket 12 is U-shaped and includes flange plates 30 extending from the arms of the U in a direction away from the cradles 11. Both cradles 11 and cradle 12 are aligned. The cradle 12 is movable towards and away from the cradles 11 by pivotal movement relative to the bar 16 and is so moved by an operating cable 32 attached to the operating arm 28 between its pivot and the counterweight 29. The cable 32, which may be a Terylene!Nylon rope, steel wire or any other suitable material, passes around a bracket 33 fixed to the upright of the connector 15 and its free end is fixed to a reel 34 mounted with its axis perpendicular to the cable. (Terylene and Nylon are Registered Trade Marks). The reel 34 is rotatably mounted on a bracket 35 fixed to the lower end of the outer tube 20 of handle 14 and is provided with a handle 36 for winding the cable on and off the reel to pivot the operating arm 28. The use of the apparatus will now be described with reference to Figure 2 as well as Figure 1. As shown in Figure 2, the apparatus described is particularly suitable for removing an elongate fluorescent light tube 38 from a ceiling mounted fitting 39 (of known type! which is open on its underside and has spring-loaded ends 40, 41 which retain the tube in position. First, the handle 14 is extended to a length which will permit the cradles 11, 12 to be brought into contact with a fluorescent tube to be removed by a user of the apparatus. The clamp 21 is tightened to fix the handle at the selected length. The apparatus is then lifted by the user until the cradles 11 come into contact with and engage the tube. During this lifting, the cradles remain upright under the action of the counterweight 24, 29 and the cable 32 is slack. The cradles 11 are engaged with a portion of the fluorescent tube spaced from one end 40 of the fitting so that the cradle 12 is adjacent the other end of the fitting. Next, the handle 36 is manually rotated by the user to wind in the cable 32 and pivot the operating arm 28 so that the cradle 12 moves outwardly and the flange plates 30 engage the end 41 of the light fitting. Continued rotation of the reel 34 moves the cradle 12 further outwards to force the end 41 outwards and release the end of the fluorescent tube which falls into the cradle 12. The reel is then released to slacken the cable 32 and releases the end 41 and the tube 38 is lowered from the fitting supported by the three cradles 11, 12. To replace a fluorescent tube in the light fitting, the process is reversed. The apparatus, with a tube held in the cradle, is raised into proximity with a light fitting and the end of the tube remote from cradle 12 is engaged in the end 40 of the fitting. Reel 34 is then used to wind in the cable 32 and move cradle 12 outwards to force outwards the end 41 of the fitting in which the tube is not engaged. The handle 14 is then manipulated to raise the cradle 12, and thus the other end of the tube, into alignment with the end 41. Next, the cable is wound out until it is slack and the end 41 moves inwards under the action of its spring to engage the tube end The apparatus is then pulled away from the tube and lowered to ground level again. During this pulling movement, the disengagement of the frictional contact between cradles 11 and the tube applies a sufficient downwards force to the tube to ensure that it is correctly engaged by the ends 40, 41 of the light fitting and will not subsequently fall out. It will be appreciated that the invention is not limited to the described embodiment to which various modifications may be made. For example there may be only one cradle 11 rather than two. Furthermore, the operating arm 28 may be slidably rather than pivotally mounted on the rod 16. WHAT I CLAIM IS: –
1. Apparatus for removing an elongate tubular light source from an overhead fitting of the kind described, the apparatus comprising frame means supporting at least one first cradle and including a portion extending from the cradle or cradles for raising the cradle or cradles overhead in which releasing means is provided movable relative to the frame means towards and away from the or at least one of the cradles and remote control means are provided for moving the releasing means, the arrangement being such that, in use, the cradle or cradles support the light source at points along the length and movement of the said releasing means is effective to release the light source from the fitting.
2. Apparatus as claimed in claim 1 in
which the releasing means comprises a second cradle mounted on the frame means in aligned spaced apart relationship with the or each first cradle.
3. Apparatus as claimed in claim 2 in which the second cradle is supported by an operating arm pivotally mounted on the frame means, pivotal movement of the operating arm being effective to move the second cradle towards and away from the or at least one of the first cradles.
4. Apparatus as claimed in claim 3 in which the operating arm is an elongate member pivoted at a point intermediate its ends which carries a counter weight on the side of the pivot remote from the second cradle for urging the operating arm into an upright position.
5. Apparatus as claimed in claim 3 or claim 4 in which the remote control means comprises a cable connected to the operating arm and a reel for extending and retracting the cable.
6. Apparatus as claimed in any one of the preceding claims in which the said portion of the frame means is an elongate handle.
7. Apparatus as claimed in claim 6 in which the handle is telescopic.
8. Apparatus as claimed in claim 6 or claim 7 in which the or each cradle is sup ported by an elongate rod connected to an end of the handle.
9. Apparatus as claimed in claim 8 in which the rod is rotatable about its longitudinal axis relative to the handle.
10. Apparatus as claimed in claim 8 or claim 9 when dependent on claim 5 in which the reel is mounted adjacent the end of the handle remote from the rod.
11. Apparatus as claimed in any one of the preceding claims in which there are two first cradles supported in aligned spaced relationship on a rocker arm pivotally mounted on the frame means.
12. Apparatus for removing an elongate tubular light source from an overhead fitting substantially as hereinbefore described with reference to and as shown in the accompanying drawings.
GB1360378A
1978-04-06
1978-04-06
Apparatus for removing elongate tubular light sources from oferhead fittings
Expired
GB1566676A
(en)
Priority Applications (1)
Application Number
Priority Date
Filing Date
Title
GB1360378A
GB1566676A
(en)
1978-04-06
1978-04-06
Apparatus for removing elongate tubular light sources from oferhead fittings
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
GB1360378A
GB1566676A
(en)
1978-04-06
1978-04-06
Apparatus for removing elongate tubular light sources from oferhead fittings
Publications (1)
Publication Number
Publication Date
GB1566676A
true
GB1566676A
(en)
1980-05-08
Family
ID=10026047
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB1360378A
Expired
GB1566676A
(en)
1978-04-06
1978-04-06
Apparatus for removing elongate tubular light sources from oferhead fittings
Country Status (1)
Country
Link
GB
(1)
GB1566676A
(en)
Cited By (4)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
GB2171950A
(en)
*
1985-02-26
1986-09-10
Hirosi Honda
Device for replacing fluorescent lamps
US4611512A
(en)
*
1985-02-26
1986-09-16
Hirosi Honda
Device for replacing fluorescent lamps
GB2197817A
(en)
*
1986-11-25
1988-06-02
P & B Engineering Company Limi
Electrical linesman’s operating pole
US5321997A
(en)
*
1992-08-20
1994-06-21
Carty James E
Vicistube F-96 tube changer
1978
1978-04-06
GB
GB1360378A
patent/GB1566676A/en
not_active
Expired
Cited By (4)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
GB2171950A
(en)
*
1985-02-26
1986-09-10
Hirosi Honda
Device for replacing fluorescent lamps
US4611512A
(en)
*
1985-02-26
1986-09-16
Hirosi Honda
Device for replacing fluorescent lamps
GB2197817A
(en)
*
1986-11-25
1988-06-02
P & B Engineering Company Limi
Electrical linesman’s operating pole
US5321997A
(en)
*
1992-08-20
1994-06-21
Carty James E
Vicistube F-96 tube changer
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Legal Events
Date
Code
Title
Description
1980-10-01
PS
Patent sealed
1983-11-23
PCNP
Patent ceased through non-payment of renewal fee
