Hi all,

The E-Bay # is 180423674973 however it was sold.  The pictures are still
there for viewing, if one
goes down the page thereon.

However, the patent number is known, which gives
insight into the mechanical design for such a small instrument; to derive
such a long ~ 5 second period,
in case anybody is interested.  The patent number is 3,685,011 and it can
readily be seen on the Google
Patents search program.  Go to the Google search engine, clich the "other"
link and go down to the
Patents search program and enter in the patent number.  One can fully review
the text and drawings and
download such with no fuss.  My initial "impression" is that it is kind of a
"mix" of the old Wechert (with the springs much lower), and even possibly
"somewhat" like a gravitational pendulum of more recent design....if,
the mass pendulum can be raised or lowered on the boom.  Its a very
interesting design which ~ might
even be useful for a unidirectional sensor application; i.e., N-S and/or
E-W, all in one instrument...but I
suppose that possiblity might be taking it too far for whatever various
reason/s.

Take care, Meredith Lamb

On Sat, Oct 24, 2009 at 12:32 PM, tchannel  wrote:

> I do not see this on ebay, could you send me the item #?
>
> tchannel@............
>
> Thanks, Ted
>
>
> ----- Original Message ----- From: "Robert McClure" <
> bobmcclure90@.........>
>
> To: 
> Sent: Saturday, October 24, 2009 11:26 AM
> Subject: Re: instrument design
>
>
>
>  It looks like an inverted pendulum to me, with a spring hinge at the
>> bottom.
>>
>> On 10/24/09, meredith lamb  wrote:
>>
>>> Hi James,
>>>
>>> Thanks very much for the E-Bay note on the seismometer!  The pictures
>>> were ~
>>> vague, but I think I see the flat metal strip on top.  Interesting
>>> hanging
>>> mass approach.  I am "speculating" that it has a photo sensor
>>> on the bottom for rough centering purposes?  The seller may send a PDF
>>> file on such which might
>>> also give more overall insight.
>>>
>>> Makes me wonder whether a round piano wire that replaces the flat metal
>>> strip would work out?
>>>
>>> Meredith
>>>
>>> On Fri, Oct 23, 2009 at 8:14 PM, James Allen 
>>> wrote:
>>>
>>>  To Meredith and all, there is a Kinemetrics SH1 currently listed on Ebay
>>>> with the case removed so that you can see the mechanism.
>>>> Jim Allen
>>>>
>>>>
>>>>
>>>>
>>>>
>>> __________________________________________________________
>>
>> Public Seismic Network Mailing List (PSN-L)
>>
>> To leave this list email PSN-L-REQUEST@.............. with
>> the body of the message (first line only): unsubscribe
>> See http://www.seismicnet.com/maillist.html for more information.
>>
>
> __________________________________________________________
>
> Public Seismic Network Mailing List (PSN-L)
>
> To leave this list email PSN-L-REQUEST@.............. with the body of the
> message (first line only): unsubscribe
> See http://www.seismicnet.com/maillist.html for more information.
>
Hi all,
=A0
The E-Bay # is 180423674973 however it was sold.=A0 The pictures are s=
till there for viewing, if one
goes down the page thereon.
=A0
However, the patent number is known, which gives
insight into the mechanical design for such a small instrument; to der=
ive such a long=A0~ 5 second period,
in case anybody is interested.=A0 The patent number is 3,685,011 and i=
t can readily be seen on the Google
Patents search program.=A0 Go to the Google search engine, clich the &=
quot;other" link and go down to the=A0
Patents search=A0program and enter in the patent number.=A0 One can fu=
lly review the text and drawings and
download such with no fuss.=A0=A0My initial "impression" is =
that it is kind of a "mix" of the old Wechert (with the springs m=
uch lower), and even possibly "somewhat" like a gravitational pen=
dulum of more recent design....if,

the mass pendulum can be raised or lowered on the boom.=A0 Its a very =
interesting design which ~ might
even be useful for a unidirectional sensor application; i.e., N-S=A0an=
d/or E-W, all in one instrument...but=A0I
suppose that possiblity might be taking it too far for whatever variou=
s reason/s.=A0
=A0
Take care, Meredith Lamb
=A0
On Sat, Oct 24, 2009 at 12:32 PM, tchannel <tchannel@............> wrote:

I do not see this on ebay, could=
 you send me the item #?

tchannel@............


Thanks, Ted


----- Original Message ----- From: "Robert =
McClure" <bobmcclure90@.........>=20

To: <=
psn-l@..............>
Sent: Saturday, October 24, 2009 11:2=
6 AM
Subject: Re: instrument design=20






=A0It looks like an inverted pen=
dulum to me, with a spring hinge at the bottom.

On 10/24/09, meredit=
h lamb <pal=
eoartifact@.........> wrote:


Hi James,

Thanks very muc=
h for the E-Bay note on the seismometer! =A0The pictures were ~
vague, b=
ut I think I see the flat metal strip on top. =A0Interesting hanging

mass approach. =A0I am "speculating" that it has a photo sensoron the bottom for rough centering purposes? =A0The seller may send a PDF<=
br>file on such which might
also give more overall insight.

Makes=
 me wonder whether a round piano wire that replaces the flat metal

strip would work out?

Meredith

On Fri, Oct 23, 2009 at 8:14 P=
M, James Allen <jcallen1@...........> wrote:


=A0To Meredith and all, there is=
 a Kinemetrics SH1 currently listed on Ebay
with the case removed so tha=
t you can see the mechanism.

Jim Allen





________________=
__________________________________________

Public Seismic Network Ma=
iling List (PSN-L)

To leave this list email PSN-L-REQUEST@.............. =
with

the body of the message (first line only): unsubscribe
See http://www.seismic=
net.com/maillist.html for more information. 

______=
____________________________________________________


Public Seismic Network Mailing List (PSN-L)

To leave this list e=
mail PSN-=
L-REQUEST@.............. with the body of the message (first line only)=
: unsubscribe

See h=
ttp://www.seismicnet.com/maillist.html for more information.
<=
/div>