For first time visitors I recommend this archive for some of my best posts.
2425. 6" long:
2426. 1" long:
2427. 10" long:
2428. Around 3" long:
2429. 34" long, take a look at Neatorama for more guesses and a chance to win a T-shirt:
2430. Around 12" tall:
2425. A clock mainspring winder, it could also be used for removing and replacing mainsprings from the barrels of clocks, patent number 443,881:
2426. A ferrite block, also called a ferrite core, ferrite ring, frerrous bead, ferrite EMI filter, or ferrite choke, it is "a passive electric component used to suppress high frequency noise in electronic circuits." These can be found on various computer cords.
2427. An iron shoe arm exerciser:
2428. Looks like a someone made a belt buckle out of some old pipes:
2429. A barbed wire salesman's cane, made of barbed wire from patent number 184,486. Text on the brass top plate reads "WATKINS LTD. ISSUE NO. 14 OF 100 A.B."
2430. A Leitz Colorimeter, a laboratory device that was "used to determine the concentration of a known solute in a given solution by the application of the Beer-Lambert law, which states that the concentration of a solute is proportional to the absorbance." Several of them can be seen in use on this page.
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To submit photos, send them to the address in my profile, please include dimensions, any text on the item, and where it was found.
Last week's set is seen below, click here to view the entire post.
More discussion and comments on these photos can be found at the newsgroup rec.puzzles.
Wednesday, December 14, 2011
Posted by Rob H. at 4:00 AM
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2425. Device for winding a strip of spring-steel into a cartridge for a clock.ReplyDelete
2426. Ferrite collar to suppress radio waves generated by the cord to which it is attached.
2426 - a Ferrite core "Line Lump" - Used to supress common mode RFI noise on the lineReplyDelete
One interesting issue with ferrites on line cores is that up till you hit RFI saturation, you are MUCH better making multiple passes through the same core than adding more cores - for instance 2 passes through one core is better than 2 cores (hint for any of you who ever have to buy a snap on line core). Depending on the frequencies you are trying to supress, there are different mixes that work better than others
73 de KG2V (almost any ham has spent time supressing RFI - not so much FROM their station, but TO their station - most electronics dump a lot of RFI out that interfere with ham radio - despite them NOT being allowed to)
2427 - It may be to compress a spring, then insert the spring into whatever it is for.ReplyDelete
2429 - I am thinking that this is a Tryer or Sampler of sorts. Insert into a product, then pull out a sample.
2429 - a clog remover for a drainReplyDelete
2430: At a guess it is to compare the opacity of two different liquid samples. Turning the knobs would chage the thickness that you were looking through. When the two are equal as judged by looking through the eyepiece at the top, you can compare how the depth.ReplyDelete
2428 is a belt buckle pipe from the '60s. I have one also.ReplyDelete
Thrilled to discover your site and the great images that you have often!ReplyDelete