PSN-L Email List Message

Subject: RE: TELEDYNE-GEOTECH HELICORDER
From: "Stephen Hammond" shammon1@.............
Date: Sun, 25 Oct 2009 00:13:36 -0700


Hi, the ink will flow if the reservoir fluid level is above the pen. The
trick is to keep it from flowing too much. I used a wire clamp on the tubing
to cut the flow down. Professional models used low pressure pumps and an fin
valve. If I can suggest, search online for "chart pen ink" and you will find
the Recorder Charts Pens Company in Newhall CA. 800-758-0740. While they do
not list your unit they have a large selection of professional pens, ink and
paper. It might be worth a trip to the website or even a call to see what
they can offer in the way of a solution.

Steve

 

From: psn-l-request@.............. [mailto:psn-l-request@............... On
Behalf Of James Allen
Sent: Saturday, October 24, 2009 9:46 PM
To: psn-l@..............
Subject: Re: TELEDYNE-GEOTECH HELICORDER

 

Steve Hammond

Is there need for a special reservoir to insert the capillary tubing into or
will the ink start flowing by the action of the pen on the chart paper?

Thanks

James Allen

----- Original Message ----- 

From: Stephen Hammond   

To: psn-l@.............. 

Sent: Saturday, October 24, 2009 8:41 PM

Subject: RE: TELEDYNE-GEOTECH HELICORDER

 

There is a typo. Not needs try needle. Steve

 

From: psn-l-request@.............. [mailto:psn-l-request@............... On
Behalf Of Stephen Hammond
Sent: Saturday, October 24, 2009 8:38 PM
To: psn-l@..............
Subject: RE: TELEDYNE-GEOTECH HELICORDER

 

For some time some PSN members were using hypodermic needs to build ink
pens. You simply grind the point off and have a precession tip that  can
then be connected to the reservoir using a capillary feed tube. We learned
the process from Howard who used this design back in the first Bay area
seismic station way before our time in the 40's. I ran two drum recorders
back around 1990 and Jan Froom currently has a display station at Bonfante
Gardens  in Gilroy CA that has a permanent display he put together for them
also using this design. 

Regards, Steve Hammond PSN Aptos, CA

 

 

From: psn-l-request@.............. [mailto:psn-l-request@............... On
Behalf Of James Allen
Sent: Saturday, October 24, 2009 8:09 PM
To: psn-l@..............
Subject: Re: TELEDYNE-GEOTECH HELICORDER

 

I think that Chris has a great idea for using ink on a Helicorder.   I
appreciate it and will experiment with this approach.

James Allen

----- Original Message ----- 

From: ChrisAtUpw@....... 

To: psn-l@.............. 

Sent: Saturday, October 24, 2009 6:54 PM

Subject: Re: TELEDYNE-GEOTECH HELICORDER

 

In a message dated 24/10/2009 22:44:00 GMT Daylight Time,
paleoartifact@......... writes:

Perhaps Geotech might have such as Al Hrubetz suggests...but being as ink
stylus writing went out long ago...one may have to resort to other
(surplus...read: junk or unknown condition substitutes) brands.

Hi James,

 

    It's just an idea, but I can still buy ink drawing pens for technical
drawing. They have plastic push on ink cartridges which can be refilled and
the ink is available in 250 ml and 23 ml bottles. The ones which I am
familiar with are UNO and Rotring. The Rotring Isograph nibs are available
separately from 0.1 to 1.0 mm. 

    Note that you can also buy fine stainless steel tube in a wide range of
sizes. I use fine piano wire for cleaning blocked pens with the special
cleaning solution. Hot Fairy washing up liquid also breaks down the ink
quite well.

    Note that hot wires are usually spot welded on. I would expect the wire
to be Nichrome.

 

    Regards,

 

    Chris Chapman

    .  












Hi, the ink will flow if the reservoir fluid level is = above the pen. The trick is to keep it from flowing too much. I used a wire clamp = on the tubing to cut the flow down. Professional models used low pressure pumps = and an fin valve. If I can suggest, search online for “chart pen = ink” and you will find the Recorder Charts Pens Company in Newhall CA. = 800-758-0740. While they do not list your unit they have a large selection of = professional pens, ink and paper. It might be worth a trip to the website or even a call to = see what they can offer in the way of a solution.

Steve

 

From:= psn-l-request@.............. [mailto:psn-l-request@............... On = Behalf Of James Allen
Sent: Saturday, October 24, 2009 9:46 PM
To: psn-l@..............
Subject: Re: TELEDYNE-GEOTECH HELICORDER

 

Steve Hammond

Is there need for a special reservoir to insert the capillary tubing into = or will the ink start flowing by the action of the pen on the chart = paper?

Thanks=

James Allen

----- Original Message -----

From: Stephen Hammond =

To: psn-l@..............

Sent:<= /b> Saturday, = October 24, 2009 8:41 PM

Subject: RE: = TELEDYNE-GEOTECH HELICORDER

 

There is a typo. Not needs try needle… = Steve

 

From:= psn-l-request@............... [mailto:psn-l-request@............... On Behalf Of Stephen = Hammond
Sent: Saturday, October 24, 2009 8:38 PM
To: psn-l@..............
Subject: RE: TELEDYNE-GEOTECH HELICORDER

 

For some time some PSN members were using hypodermic = needs to build ink pens. You simply grind the point off and have a precession tip = that  can then be connected to the reservoir using a capillary feed = tube. We learned the process from Howard who used this design back in the first = Bay area seismic station way before our time in the 40’s. I ran two drum = recorders back around 1990 and Jan Froom currently has a display station at = Bonfante Gardens  in Gilroy CA that has a permanent display he put together = for them also using this design.

Regards, Steve Hammond PSN Aptos, = CA

 

 

From:= psn-l-request@.............. [mailto:psn-l-request@............... On = Behalf Of James Allen
Sent: Saturday, October 24, 2009 8:09 PM
To: psn-l@..............
Subject: Re: TELEDYNE-GEOTECH HELICORDER

 

I think that Chris has a great idea for using ink on a Helicorder.   I appreciate it and will experiment with this = approach.

James Allen

----- Original Message -----

Sent: Saturday, October 24, 2009 6:54 PM

Subject: Re: TELEDYNE-GEOTECH HELICORDER

 

In a message dated 24/10/2009 22:44:00 GMT Daylight Time, = paleoartifact@......... = writes:

Perhaps Geotech might have such as Al Hrubetz = suggests...but being as ink stylus writing went out long ago...one may have to resort to = other (surplus...read: junk or unknown condition substitutes) = brands.

Hi James,

 

    It's just an idea, but I can still = buy ink drawing pens for technical drawing. They have plastic push on ink = cartridges which can be refilled and the ink is available in 250 ml and 23 ml = bottles. The ones which I am familiar with are UNO and Rotring. The Rotring Isograph = nibs are available separately from 0.1 to 1.0 mm.

    Note that you can also buy fine = stainless steel tube in a wide range of sizes. I use fine piano wire for cleaning = blocked pens with the special cleaning solution. Hot Fairy washing up liquid = also breaks down the ink quite well.

    Note that hot wires are usually = spot welded on. I would expect the wire to be Nichrome.

 

    Regards,

 

    Chris Chapman

    .  


[ Top ] [ Back ] [ Home Page ]