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Posted by Gerald Miller on April 20, 2008, 5:38 pm
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On Sat, 19 Apr 2008 15:26:51 -0400, Leon Fisk
>On Thu, 17 Apr 2008 22:22:22 -0400, Joe
>
>>OK, I posted a photo in the Dropbox: Hay_CottonScale.gif & Hay_CottonScale.txt
>>Coming from this area, it's possible that it's a cotton scale, but I still
don't
>>know what would have been attached to the left side to bring it level. The
scale
>>is 0 - 50 lbs. Maybe a pan - it took about 2.75 lbs to level it out.
>
>Hi Joe,
>
>I suspect you only have the beam portion of a platform
>scale. Take a look at Fig 1 in this old patent diagram:
>
>http://www.google.com/patents?vid=1072020
>
>It looks like your beam may have been meant to sit in some
>sort of framework. That would explain why it doesn't have
>any hooks to hang it up with or hang stuff to be weighed on.
>
If this were the case, then the upward loop to the left of the sliding
weight would not be there, this would be the place where the knife
edges would rest on the bearings of the scale.
>The McFarlane patent diagrams also use the same shape of
>cut-out on the sliding weight. I couldn't find out much
>about McFarlane Manufacturing other than they did make some
>platform scales that used a dial indicator...
>
This is common to every beam scale I have operated in the range of 5
pounds to 50 tons. Incidentally, this is why my signature is so
terrible - at one time I was signing up to 500 weigh tickets in a 12
hour shift.
>It seems like I have seen some floor type platform scales
>that used a similar balance beam system before. Maybe this
>will stir up some other peoples memories of what they looked
>like.
The additional weights may be marked "50" and "100" which would extend
the capacity to 200 pounds.
Gerry :-)}
London, Canada
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Posted by Leon Fisk on April 21, 2008, 2:24 pm
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On Sun, 20 Apr 2008 17:38:28 -0400, Gerald Miller
>If this were the case, then the upward loop to the left of the sliding
>weight would not be there, this would be the place where the knife
>edges would rest on the bearings of the scale.
I was thinking that too until I looked at the patent I
referenced. It has the same loop and yet shows a stand
holding it. McFarlane had several similar patents from this
same time period, all for their dial indicator and beam. One
of the other patent drawings used a hook that held the beam
loop up.
I realize that this could have been a drawing error, but
would rather believe the draftsman just copied something
that was already in existence that they had on hand (shrug).
See this patent for one that they represented using a hook
to grab the loop:
http://www.google.com/patents?vid=1072018
I couldn't find any good images/diagrams that showed how the
beam was implemented in old platform scales...
<snip>
>The additional weights may be marked "50" and "100" which would extend
>the capacity to 200 pounds.
The loops are around 5/16-3/8 inch in diameter and so are
the knife edge pins. Seems like pretty stout stuff for just
50 pound capacity.
--
Leon Fisk
Grand Rapids MI/Zone 5b
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Posted by Gerald Miller on April 21, 2008, 7:38 pm
Please log in for more thread options On Mon, 21 Apr 2008 14:24:14 -0400, Leon Fisk
>On Sun, 20 Apr 2008 17:38:28 -0400, Gerald Miller
>
>>If this were the case, then the upward loop to the left of the sliding
>>weight would not be there, this would be the place where the knife
>>edges would rest on the bearings of the scale.
>
>I was thinking that too until I looked at the patent I
>referenced. It has the same loop and yet shows a stand
>holding it. McFarlane had several similar patents from this
>same time period, all for their dial indicator and beam. One
>of the other patent drawings used a hook that held the beam
>loop up.
>
>I realize that this could have been a drawing error, but
>would rather believe the draftsman just copied something
>that was already in existence that they had on hand (shrug).
>
>See this patent for one that they represented using a hook
>to grab the loop:
>
>http://www.google.com/patents?vid=1072018
Now, that is a different configuration
>
>I couldn't find any good images/diagrams that showed how the
>beam was implemented in old platform scales...
>
><snip>
>>The additional weights may be marked "50" and "100" which would extend
>>the capacity to 200 pounds.
>
>The loops are around 5/16-3/8 inch in diameter and so are
>the knife edge pins. Seems like pretty stout stuff for just
>50 pound capacity.
Gerry :-)}
London, Canada
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Posted by Joe on April 22, 2008, 8:39 pm
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>On Mon, 21 Apr 2008 14:24:14 -0400, Leon Fisk
>
>>On Sun, 20 Apr 2008 17:38:28 -0400, Gerald Miller
>>
>>>If this were the case, then the upward loop to the left of the sliding
>>>weight would not be there, this would be the place where the knife
>>>edges would rest on the bearings of the scale.
>>
>>I was thinking that too until I looked at the patent I
>>referenced. It has the same loop and yet shows a stand
>>holding it. McFarlane had several similar patents from this
>>same time period, all for their dial indicator and beam. One
>>of the other patent drawings used a hook that held the beam
>>loop up.
>>
>>I realize that this could have been a drawing error, but
>>would rather believe the draftsman just copied something
>>that was already in existence that they had on hand (shrug).
>>
>>See this patent for one that they represented using a hook
>>to grab the loop:
>>
>>http://www.google.com/patents?vid=1072018
>Now, that is a different configuration
>>
>>I couldn't find any good images/diagrams that showed how the
>>beam was implemented in old platform scales...
>>
>><snip>
>>>The additional weights may be marked "50" and "100" which would extend
>>>the capacity to 200 pounds.
>>
>>The loops are around 5/16-3/8 inch in diameter and so are
>>the knife edge pins. Seems like pretty stout stuff for just
>>50 pound capacity.
>Gerry :-)}
>London, Canada
Wow! Thanks to both of you guys for your comments. Leon, I noticed in the 2nd
patent drawing that there appears to be both a hanging loop and a pillar; seems
a bit redundant. Maybe the pillar is supporting the hanging hook. I'll have to
read the full application later to see if this is explained. Also, you are
correct that the loops are 3/8" dia.
My wife is going back to the flea market tomorrow (it's only open on Wednesdays)
I'm asking her to be on the lookout for the other beam the guy had, which I
think goes with the 2 weights. The undersides of the hooks for those weights
come to a knife edge, and I believe they hung from the notches on the beam of
the other scale. It looked like what around here is called a tobacco scale.
Maybe I'll luck out.
Again, thanks to all who offered help.
Joe
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Posted by on April 18, 2008, 1:04 am
Please log in for more thread options > I just bought what I've always called a "hay scale". It's just a
> balance beam with a top hook for hanging from wherever, and a bottom
> hook for the load. The beam is brass, with a sliding counterweight,
> and there are 2 extra weights (iron) for increasing the capacity.
> (metal content)
>
> When the counterweight is set to 0, the scale still acts as though
> there needs to be more weight attached to the "load" hook. I guess
> there was some sort of device added, but I dont know what (if it truly
> was a hay scale, I doubt that there would be a pan). The needed extra
> weight seems to be on the order of 5 - 10 lbs.
>
> Anyway, I tried searching for information about these things, but got
> mostly pay-scale nonsense. Anybody have any links for scale
> collectors, or whatever. I have accumulated quite a collection of
> various scales and balances, from a lab "chain weight" analytical
> balance (measures as little as 0.01 mg), to a Fairbanks-Morse platform
> balance that can handle up to 1000 lbs. This is my first foray into
> the free-hanging scales, though.
>
> Thanks,
> Joe
Search on "steelyard" and see what you find. Platform scales have
mostly taken over what they used to use the steelyards for, they take
less skill to use. It needs an overhead support to use, a barn or
shop rafter was commonly used. The load end used whatever was needed,
chain with a pan, chain with hook or hooks, whatever. Probably that
has been salvaged. Usually the beam was iron or steel and the one I
have is about 3' long, hence "steelyard", or so I've been told. It
was cheap, portable and gave results accurate enough for the purposes
for which it was used.
Stan
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