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wire rope puller question Paul Oman 07-09-2006
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Posted by Paul Oman on July 9, 2006, 2:21 pm
Hello

I have been using a 'wire rope puller', also called a 'hand puller." I
always called it a "come-a-long."

Anyway, two set of teeth lock into the ratchet - one holds the tension
while the other advances.

It is easy to disengage one or the other, but how the heck do you
release both and let the cable go slack when it is under a load?

paul

AppliancePartsPros.com, Inc.
Posted by MDT at Paragon Home Inspection on July 9, 2006, 2:25 pm

Paul Oman wrote:
> Hello
>
> I have been using a 'wire rope puller', also called a 'hand puller." I
> always called it a "come-a-long."
>
> Anyway, two set of teeth lock into the ratchet - one holds the tension
> while the other advances.
>
> It is easy to disengage one or the other, but how the heck do you
> release both and let the cable go slack when it is under a load?
>
> paul

You advance the cable drum slightly, just enough to alow you toggle the
pawl and unwind the cable until the next "tooth".


Posted by DanG on July 9, 2006, 2:29 pm
There will be a spring or a lever that will take the pressure off
the pawl that is connected to the handle. Once this is released,
the handle will flop back and forth. Slam the handle forward to
release the other pawl.
This method has very little control of the load. Another method
would be to raise the pawl on the handle and move the handle so it
could only move the drum one click, take the load on the handle
and disengage the pawl on the drum with you fingers as you let the
pressure off the load with the handle. Repeat as necessary.
______________________________
Keep the whole world singing . . . .
DanG (remove the sevens)
dgriff237@7cox.net



> Hello
>
> I have been using a 'wire rope puller', also called a 'hand
> puller." I always called it a "come-a-long."
>
> Anyway, two set of teeth lock into the ratchet - one holds the
> tension while the other advances.
>
> It is easy to disengage one or the other, but how the heck do
> you release both and let the cable go slack when it is under a
> load?
>
> paul



Posted by on July 9, 2006, 3:29 pm

>There will be a spring or a lever that will take the pressure off
>the pawl that is connected to the handle. Once this is released,
>the handle will flop back and forth. Slam the handle forward to
>release the other pawl.
>This method has very little control of the load. Another method
>would be to raise the pawl on the handle and move the handle so it
>could only move the drum one click, take the load on the handle
>and disengage the pawl on the drum with you fingers as you let the
>pressure off the load with the handle. Repeat as necessary.
>______________________________
>Keep the whole world singing . . . .
>DanG (remove the sevens)
>dgriff237@7cox.net
>
>
>
>> Hello
>>
>> I have been using a 'wire rope puller', also called a 'hand
>> puller." I always called it a "come-a-long."
>>
>> Anyway, two set of teeth lock into the ratchet - one holds the
>> tension while the other advances.
>>
>> It is easy to disengage one or the other, but how the heck do
>> you release both and let the cable go slack when it is under a
>> load?
>>
>> paul
>


On my old Craftsman puller there ares two positions of the moving
pawl. One rides on the ratchet and tightens the load. The other holds
the pawk away from the ratchet until you push it all the way up where
it disengages the holding pawl, holds the ratchet and alows a
controlled lowering of the load until you hit the opposite stop.. Once
the load is off there is a tang on the holding pawl that allows you to
free wheel the spool.

Posted by dpb on July 10, 2006, 9:47 am

Paul Oman wrote:
...
> ... using a ... "come-a-long." ...how the heck do you
> release both and let the cable go slack when it is under a load?

The correct answer to the question as worded is "you don't!" (at least
if you want to keep all fingers and toes, etc.).

If the thing is really under load, the last thing you want to do is let
it fly...others have talked about how you back it off but didn't
mention there's a real potential to hurt one's self badly here if try
what ask directly. (I've seen some nasty knocks w/ accidental releases
that way and a couple of near misses.)

The particular variety I am partial to (and for the moment I can't
think of the manufacturer, but they're US (CA, I think?), not the cheap
Chinese or other imports one finds in virtually all locations these
days) is designed very nicely so that the handle in the reverse
position will automagically release the locking pawl and allow for a
controlled backoff. The cheap imports are _supposed_ to work in a
similar fashion but rarely if ever actually work. Amongst other
features these still sport cast puller pulley instead of the stamped
plates and are otherwise just made to a higher standard.


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