Sparro Posi-chek - what's it for?

[rke[pler]

I have had this tool or bit-o-tooling for some time. Made by Sparro it's stamped "POSI-CHEK". I have no idea what it's for. Here's a couple of images:

As shown the plunger moves in and out and is spring loaded, not heavily. There's a retention pin on the end of the travel it can be rotated into as a stop. The other end has a 3/4 hex head that has a 3/16 pin through it with a set screw holding the through position. The hex is spring loaded and can be twisted some against the spring.

Any thoughts on what the heck this is?

 

[L Vanice]

Ask the maker.

Sparro Machine Products
382 Post Rd
Westerly RI Rhode Island
United States 02891
Phone: +1 401 322 1602, Fax: +1 410 771 9507
Web: http://www.sparro.com
Tags: centers collets machine machining milling products screw
Keywords: Industrial Goods and Services Casting, Molding, Machining

Provides broad range of machining services and manufactures variety of tooling. Includes prototypes, low run production, work supports and toolholders, chip shields, and custom fixtures.

Sparro Machine Products

Provides broad range of machining services and manufactures variety of tooling. Includes prototypes, low run production, work supports and toolholders, chip shields, and custom fixtures.

www.ndt.org

Larry

 

[eKretz]

They seem to be defunct. Website is ads about cooking, and phone number is a "not in service" recording.

 

[boslab]

Is it a belt tension dodah?
They tend to be sprung
Mark

 

[Joe Gwinn]

There is still a Sparro, but it moved to a residence, perhaps due to COVID. This may also explain the cooking-related website.

SPARRO MACHINE PRODUCTS, INC
14 MEMORY LN WESTERLY, RI 02891
(401) 322-1602

Phone didn't change. D&B lists the contact as DONALD SPEICE.

 

[eKretz]

As I said, the phone number doesn't work.

 

[John Garner]

Having trouble with my telephone, and can't copy-and-post any links, but a PM search will turn up a few old threads about Sparro Machine. At least one of those earlier threads has a link to the "wayback" archive of Sparro's website, including some of their products.

 

[technocrat]

Tailstock workstop for repeatable positioning of work in the lathe chuck. Twist and retract to get it out of the way.

 

[rke[pler]

Tailstock workstop for repeatable positioning of work in the lathe chuck. Twist and retract to get it out of the way.

Yup, that's it. I'd looked on archive.org and didn't find it, had to go further back. Here's a link to the page:

Lathe tool for machinists

Mine is a little difference in that the hex doesn't accept anything but I'm glad to finally have this settled - this part has been hanging around for a long while. Now if I could just find a set of the ParaSine angle plates...

 

[Joe Gwinn]

As I said, the phone number doesn't work.

Yes. The reason was identity, to confirm that the two addresses were the same business.