Date: Mon Dec 22 17:03:56 2008

Author: Wolfgang Rueckner

Subject: Re: old Fisher Scientific wire burner

Post:


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P.S.: There's a home-made version of this on page 3 of John
Strongs's book, Procedures in Experimental Physics, (Prentice Hall,
1938).

On Dec 22, 2008, at 4:58 PM, Wolfgang Rueckner wrote:

> To me it looks like a piece of apparatus for glass blowers. If you
> want to cut large diameter glass tubing or other cylindrical
> vessels, score a line around the circumference, and then hold the
> scored glass on a hot wire. The strong differential heating will
> make it break along the scored line. -- Wolfgang
>
>
>
> On Dec 22, 2008, at 4:39 PM, Adam Beehler wrote:
>
>> I recently acquired an older piece of equipment that I am not
>> exactly sure what its original purpose was for. When plugged in
>> and a piece of wire attached across the connections shown in the
>> picture posted, current flows through the wire and heats it up to
>> the point it melts. Or, if there is a break in the wire and the
>> two open ends are brought close enough together, then sparks fly
>> for a second until a new break has been established and the
>> current stops flowing. It was manufactured by Fisher Scientific
>> Company, but their techies have not been able to help me yet.
>> Anyone recognize this piece of equipment? Thanks! Happy Holidays!
>>
>> Adam Beehler
>>
>>
>> http://www.physics.utah.edu/~beehler/tap_l/FisherEquip1.JPG
>> http://www.physics.utah.edu/~beehler/tap_l/FisherEquip2.JPG
>> http://www.physics.utah.edu/~beehler/tap_l/FisherEquip3.JPG


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Procedures in Experimental Physics, (Prentice Hall, =
1938).On Dec 22, 2008, at 4:58 PM, =
Wolfgang Rueckner wrote:=A0 If you want to =
cut large diameter glass tubing or other cylindrical vessels, score a =
line around the circumference, and then hold the scored glass on a hot =
wire.=A0 The strong =
differential heating will make it break along the scored line. -- =
Wolfgang=A0 When plugged in and a piece =
of wire attached across the connections shown in the picture posted, =
current flows through the wire and heats it up to the point it =
melts.=A0 Or, if there is a =
break in the wire and the two open ends are brought close enough =
together, then sparks fly for a second until a new break has been =
established and the current stops flowing.=A0 It was manufactured by Fisher =
Scientific Company, but their techies have not been able to help me =
yet.=A0 Anyone recognize =
this piece of equipment?=A0 =
Thanks!=A0 Happy =
Holidays!http:=
//www.physics.utah.edu/~beehler/tap_l/FisherEquip1.JPGhttp:=
//www.physics.utah.edu/~beehler/tap_l/FisherEquip2.JPGhttp:=
//www.physics.utah.edu/~beehler/tap_l/FisherEquip3.JPG =
=

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