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Anyone know that the gear mechanism is called in an electric screwdriver which locks the shaft and stops it rotating backward. Its made up of some metal pins that jam the gear when load is applied by the shaft and not the motor.
Trying to find out the proper name.
Dunno about electric screwdrivers specifically, but you're kinda describing a pawl.
No its not a pawl like in a cassette. There are no teeth involved.
This is a photo of the parts.
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Thrunge gasket ( imperial)
You can tell it's an imperial one if it looks like this...
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Perchy has it
Spindle lock
looks like a dog clutch to me....
+1 for dog. That's what we called them in my old gearbox days
Its the little round pins inside that do the locking. Sounds like it is an automatic spindle lock. Now just need to find someone that sells them.
Roller clutch??
[url= http://www.renold.com/company/latest-news/couplings/sprag_clutch_animation_news/ ]Sprag Clutch is what I think you are trying to describe[/url]
There are about 200 installed here at work some less that 20mm in diameter with the biggest being 500mm.
I Googled Thrunge Gasket 😆
None of these are quite right yet as they all lock drive in just one direction. The mechanism in a screwdriver locks in either direction but only when force is applied to one side.
Automatic spindle lock
Inby-Forther Lock
Oh, very good.
The original machine had a base plate of prefabulated aluminite, surmounted by a malleable logarithmic casing in such a way that the two main spurving bearings were in a direct line with the pentametric fan. The latter consisted simply of six hydrocoptic marzlevanes, so fitted to the ambifacient lunar waneshaft that side fumbling was effectively prevented. The main winding was of the normal lotus-o-delta type placed in panendermic semi-bovoid slots in the stator, every seventh conductor being connected by a nonreversible tremie pipe to the differential girdlespring on the "up" end of the grammeters.
Detent mechanism
vinnyeh - Member
The original machine had a base plate of prefabulated aluminite, surmounted by a malleable logarithmic casing in such a way that the two main spurving bearings were in a direct line with the pentametric fan. The latter consisted simply of six hydrocoptic marzlevanes, so fitted to the ambifacient lunar waneshaft that side fumbling was effectively prevented. The main winding was of the normal lotus-o-delta type placed in panendermic semi-bovoid slots in the stator, every seventh conductor being connected by a nonreversible tremie pipe to the differential girdlespring on the "up" end of the grammeters.
Thank god someone simplified it. Now it's all clear. 🙂
The original machine had a base plate of prefabulated aluminite, surmounted by a malleable logarithmic casing in such a way that the two main spurving bearings were in a direct line with the pentametric fan. The latter consisted simply of six hydrocoptic marzlevanes, so fitted to the ambifacient lunar waneshaft that side fumbling was effectively prevented. The main winding was of the normal lotus-o-delta type placed in panendermic semi-bovoid slots in the stator, every seventh conductor being connected by a nonreversible tremie pipe to the differential girdlespring on the "up" end of the grammeters.
Deep joy!
Now just need to find someone that sells them.
Is it to repair the tool you've got? Or are you making something that needs to function in a simuilar way?
If it's to repair your drill mtmc.co.uk sell a lot of spares and have useful exploded diagrams that would help you identify the bit you're looking for.
maccruiskeen - thanks for that. It is not to fix the drill but for a project I am working on. I need a way for a lead screw to move back and forth by an electric motor but then for the screw to be locked out if force is applied to the traveling nut. The simple way that electric drills and screwdrivers lock out would be perfect, as they are cheap and simple. Ultimately I want to find a supplier that has off the shelf units. I'm sure there will be something out there, it's just knowing what it is called.