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#1
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Worn Friction Hinge on Desk Lamp
I've got a clamp-on, adjustable swing arm desk lamp with fully enclosed friction
hinges connecting the base, the arms, and the shade. There are no springs, tension knobs, screw holes, or any other apparent method of adjusting the friction. The hinge closest to the base has worn and no longer supports any extended lamp position. I don't even see any way to disassemble the hinges. I've spent hours with Google trying to get help, but no luck. The manufacturer has not been of help either. Any bright ideas? |
#2
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Worn Friction Hinge on Desk Lamp
On Apr 21, 3:27*pm, Peter wrote:
I don't even see any way to disassemble the hinges. Well, shirley there has to be some kind of pin that could be drilled out and maybe replaced with a boat, washers and wingnut... Practically anything can be fixed, but that sounds like a candidate for the recycle bin. ----- - gpsman |
#3
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Worn Friction Hinge on Desk Lamp
gpsman wrote:
On Apr 21, 3:27 pm, Peter wrote: I don't even see any way to disassemble the hinges. Well, shirley there has to be some kind of pin that could be drilled out and maybe replaced with a boat, washers and wingnut... Practically anything can be fixed, but that sounds like a candidate for the recycle bin. ----- - gpsman Good idea if I had a drill press to stay precisely on axis. However, I failed to mention that the wiring for the lamp is entirely inside the arms and hinge assembly. My hope is to repair the friction hinge, not obliterate it. Recycle bin? Not likely! Equivalent quality/feature replacement lamps are $80 and the lamp is otherwise fully functional. |
#4
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Worn Friction Hinge on Desk Lamp
On 4/21/2009 12:27 PM Peter spake thus:
I've got a clamp-on, adjustable swing arm desk lamp with fully enclosed friction hinges connecting the base, the arms, and the shade. There are no springs, tension knobs, screw holes, or any other apparent method of adjusting the friction. The hinge closest to the base has worn and no longer supports any extended lamp position. I don't even see any way to disassemble the hinges. I've spent hours with Google trying to get help, but no luck. The manufacturer has not been of help either. Any bright ideas? You say the hinges are fully enclosed: does this mean that there's some kind of cover over them, or does the exterior of the lamp arms form the cover? There must be some way to get at that hinge. Any sign of a dimple, slot, rivet, any other fastener/opening to gain access? How about posting pictures of it? All the swing arm lamps I have are the el cheapo kind where everything's bare naked exposed. -- Save the Planet Kill Yourself - motto of the Church of Euthanasia (http://www.churchofeuthanasia.org/) |
#5
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Worn Friction Hinge on Desk Lamp
"David Nebenzahl" wrote in message .com... On 4/21/2009 12:27 PM Peter spake thus: You say the hinges are fully enclosed: does this mean that there's some kind of cover over them, or does the exterior of the lamp arms form the cover? There must be some way to get at that hinge. Any sign of a dimple, slot, rivet, any other fastener/opening to gain access? The hinge pins may be a press-fit. Mebbe squeeze the hinge barrel with vise grips? If that helps a little, mebbe try getting the hinge barrel areas into a vise or even hit 'em with a pin punch or similar. |
#6
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Worn Friction Hinge on Desk Lamp
Peter wrote:
I've got a clamp-on, adjustable swing arm desk lamp with fully enclosed friction hinges connecting the base, the arms, and the shade. There are no springs, tension knobs, screw holes, or any other apparent method of adjusting the friction. The hinge closest to the base has worn and no longer supports any extended lamp position. I don't even see any way to disassemble the hinges. I've spent hours with Google trying to get help, but no luck. The manufacturer has not been of help either. Any bright ideas? I'd try to find a real draftsman's light and save yourself the aggravation. nate -- replace "roosters" with "cox" to reply. http://members.cox.net/njnagel |
#7
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Worn Friction Hinge on Desk Lamp
Nate Nagel wrote:
Peter wrote: I've got a clamp-on, adjustable swing arm desk lamp with fully enclosed friction hinges connecting the base, the arms, and the shade. There are no springs, tension knobs, screw holes, or any other apparent method of adjusting the friction. The hinge closest to the base has worn and no longer supports any extended lamp position. I don't even see any way to disassemble the hinges. I've spent hours with Google trying to get help, but no luck. The manufacturer has not been of help either. Any bright ideas? I'd try to find a real draftsman's light and save yourself the aggravation. nate some are actually somewhat affordable http://estore.masterg.com/drafting-supplies/lamps what you're looking for are ones with springs at each pivot so they're not relying on friction to hold the lamp steady nate -- replace "roosters" with "cox" to reply. http://members.cox.net/njnagel |
#8
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Worn Friction Hinge on Desk Lamp
Peter wrote:
I've got a clamp-on, adjustable swing arm desk lamp with fully enclosed friction hinges connecting the base, the arms, and the shade. There are no springs, tension knobs, screw holes, or any other apparent method of adjusting the friction. The hinge closest to the base has worn and no longer supports any extended lamp position. I don't even see any way to disassemble the hinges. I've spent hours with Google trying to get help, but no luck. The manufacturer has not been of help either. Any bright ideas? You could always try exploratory surgery with a Dremel Tool. A picture or brand and model might help us figure out how it was assembled. TDD |
#9
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Worn Friction Hinge on Desk Lamp
On 4/22/2009 8:04 AM Peter spake thus:
Thanks to all who have replied to date. I've attached a front and side view of one of the friction hinges (all 3 hinges appear to be the same construction). Just a note: attaching pictures to messages in non-"binary" newsgroups is considered bad form and annoys some people (doesn't bother me that much, but others object to it). Better to post pictures on a website somewhere (free picture-posting sites abound) and put a link to them in the message. The lamp was made by Dana lighting (a division of Catalina lighting) but I don't have a model#. I described the lamp to Catalina in an e-mail and their reply was that the lamp was discontinued and they don't provide any customer support. P.S. The small dimple that is visible in the front view near the junction of the bottom of the arm and the top of the hinge is a press-fit release that allows the "female" tube of the arm to snap over a "male" extension flange on the hinge assembly. I pulled the arm off the flange, but the entire flange is sealed except for a small aperture for the wire and it does not provide any access to the hinge mechanism itself. Peter Sounds pretty hopeless so far as trying to disassemble the hinge goes. I can think of one last-ditch measure you might take: spray the joints with some kind of "de-lubricant" (i.e., something sticky, like glue or other adhesive). You might try spraying just a *little* bit of sticky stuff into the joints to see if that might help grab. Not too much or you might give the whole thing a bad case of arthritis. -- Save the Planet Kill Yourself - motto of the Church of Euthanasia (http://www.churchofeuthanasia.org/) |
#10
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Worn Friction Hinge on Desk Lamp
In article ,
David Nebenzahl wrote: spray the joints with some kind of "de-lubricant" (i.e., something sticky, like glue or other adhesive). Here's where Steve would recommend WD-40. |
#11
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Worn Friction Hinge on Desk Lamp
In article ,
Peter wrote: I've got a clamp-on, adjustable swing arm desk lamp with fully enclosed friction hinges connecting the base, the arms, and the shade. There are no springs, tension knobs, screw holes, or any other apparent method of adjusting the friction. The hinge closest to the base has worn and no longer supports any extended lamp position. I don't even see any way to disassemble the hinges. I've spent hours with Google trying to get help, but no luck. The manufacturer has not been of help either. Any bright ideas? Yes, disassemble it. Someone put it together, therefore it can be taken apart. I'd start by trying to pry off those plastic caps over the hinges. If they don't pry off, then cut them off. They're obviously just cosmetic. That should expose the mechanism. But then, since you've spent hours searching Google instead of minutes using your analytical skills, you might not have the skills to repair what you find, anyway. |
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