While researching for #795 I found the patent for #763 in set #131 too. June 17 1919 patent number 1,307,140.
"Printer's Furniture: The invention relates to adjustable furniture and quoins and more particularly to that form known as "job locks" in which the adjustment of the two relatively movable members is effected by a screw having ratchet threads engaged in separable spring actuated dogs or pawls, serving as a nut..."
Link:
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I had to verify some things first or I would have posted this yesterday.
For the curious, there are two more very similar patents:
I was going to say I'll switch back in a few weeks when I reach set 140, but since the set numbers are meaningless anyway, I'll just skip ahead to CXL next week.
Thanks! And also thanks for discovering the patent numbers for both of the quoins (number 795 and 763). I've showed number 795 to a lot of people and thought I was never going to find out what it was.
I updated the answer page for number 763 with a link to the patent:
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Sounds good, whenever you have time to post some tips, I'd appreciate it.
Nope. DB-25 yes, and 13W3 in the same shell, but the 9-pin ones which I have are DE-9 connectors.
I note that you do not respond to my comment about the difference between the handset connector and the more common one used for phone lines.
The data sheet for the crimp dies on my AMP crimper include (among others):
Part # Ident Description Dot ======================================== 853400-3 Green 4 POSN HANDSET 853400-8 Blue 4-5 POSN LINE
Which shows a different die set needed for the narrower connector used on the handset. (I don't have that particular die set, though I have the one for the 4-6 position one, and the 8-position one.
Who actually *reads* the numbers? The Roman numerals are easier to spot when scanning through a list of articles to select what you want to read/respond to first.
The connector on handset cord on my phone looks just like the one in the photo. ITT didn't always do thing the W-E way, when it didn't have to meet a standard. I serviced the old 1A key phone systems for years, and it was amazing just how cheap some of the brands were made, but they all plugged into the same KTU, and the cards were interchangeable.
Just checking! ;-) Most people think all "sub D" shells are 'DB" series, including a lot of computer cable and connector vendors. The originals Sub-D connectors were made by Cinch. Also, the SVGA monitor plug is a "HDE-15" sub D connector. I have about 500 different types of connectors on hand for repairs, including some that haven't been made in over 60 years. (A four pin tube socket for the very early "Breadboard" radios)
See above.
I got a new Jameco catalog in the mail today with the amp modular plugs on page 115. they also have their ValuePro line with the 4P4C connectors, but the picture stinks. They have the rather rare 10P10C connector as well. If you look at the top right section of the page you will see that there are two widths of 4P4C modular jacks available. Since the handset doesn't connect to the telco, it doesn't need an Registered Jack number. I can scan the wider plug for you, but not tonight. I do my graphics work on another computer that's in the house, and I'm working in one of my shops tonight.
The only genuine WE handset which I have nearby has the captive cord instead of the modular connector cord, so I can't check there. But IIRC, *all* handset cords have used that narrower connector.
It is a bit too late tonight, but I could photograph them both side by side.
some
Also -- *any* size of the "Miniature Blue Ribbon" connectors by Amphenol is now called "Centronics", simply because Centronics (the printer manufacturer) selected that connector for the parallel interface which they used. I find myself greatly frustrated by the use of the term for the 50-pin connectors used for SCSI on many systems. (For the
50-pin, I prefer the locking connector made mostly by AMP and used on the Suns before they went to fast wide SCSI with 68-pin connectors replacing the 50-pin ones.
Though Cannon was another common manufacturer of those. Each had different designs of backshells -- some much worse than others.
The ones with two pins fatter than the other two, so filament fed through two, and the other two were grid and plate -- and the filament served as the cathode as well? Or the ones where grid and plate were separate connections through the walls of the tube?
Yes -- you have covered it there.
So it does.
I would like to get a crimper for those. I have an sBus card for older Sun workstations which provides four serial ports through such connectors -- though I really don't need the outer two pins -- they are for carrying the signals for synchronous serial and asynchronous is all that I need.
Actually -- the top of that page shows two four-pin connectors, but only one is a 4P4C. The other is marked as 6P4C. The 4P4C is labeled with the descriptive word "handset", while the 6P4C is one of two marked "RJ11". All three have WE numbers -- an Western Electric is good enough to be Phone Company -- at least back in the old days. :-)
Hmm ... I'll have to look at what DD form I got when I retired as a civilian employee of the Army.
I use one of my flatbed scanners for small parts. Lay them on the glass and cover it with a folded white tee shirt. Some samples are on this page of my personal website:
Some people also call the 24 pin version used for IEEE-488 (HPIB, GPIB) "Centronics" as well. BTW, Google SCSI as "Small System Serial Interface" and see how many idiots there are out there. ;-)
Personally, I prefer the AMP one piece shell that folds over and has a single screw to hold it together. I think I saw a couple hundred DB 25 hoods the other day at the local surplus metal dealer. I'll take a notebook the next time to write down the AMP number.
Yes, it is black bakelite with a pair of "F"s , a "G" and a "P" molded in. It is made to be screwed to a board, and top wired.
How hard would it be for you to machine the outer edges from one of the 8P8C dies to make it wide enough? If you don't need the wires, you don't have to worry about crimping those positions. Personally, I would make my own dies for my 1 ton arbor press. I have severe Carpal Tunnel Syndrome, so some hand tools are out of the question most days. I used custom dies with a 1/2 ton arbor press for crimping ribbon cable into IDC sub-D connectors, and IC headers at Microdyne. We had 25 people who made cables for production, but I preferred to make my own for test fixtures, rather than spend a half hour explaining what i needed. A quick and dirty guide for the pin side of the IC header connectors can me made from a stack of three or four layers of phenolic or glass epoxy perf board drilled in a .1" * .1" grid instead of drilling a metal plate. A couple screws from the bottom of a scrap piece of 1'8" aluminum plate allows you to replace the perf board when it wears out. It has the advantage of fitting every version made with .1" spacing, and will last for 500 to 1000 crimps if you don't abuse it.
That is the left column labeled "Modular Plugs". The first two items in the right hand column are the two different 4P4C jacks, and the widths are .48" and .395". If you look, you will see that the narrower version is more expensive, which suggests that it doesn't sell as well.
My sig file is there to remind a net stalker in Oregon that he hasn't stopped my non profit work to collect, refurbish and give free working computers to other low income & disabled Veterans in my area. The DD2114 is your honorable discharge.
#798: Veneer/inlay knife? That end could be used for tamping a pipe, but tampers usually are round. I'd venture it's a veneering knife; one uses a veneer hammer to press glued veneers into place, and the curved shape of that end is about right for a veneer pressure job.
You'd have to clean glue from the knife, though...
My flatbed scanner is hooked to the token Windows box, and is a pain to use (limited physical access among other things), and I don't think that I even *have* a plain white tee shirt. (They don't have pockets, and I use shirt pockets regularly. :-)
Yep! I wonder where some of these things come from.
The AMP ones also have a second screw (a long slotted setscrew), in a square nut which drives the tapered Delrin block which serves as the cable clamp. IIRC, some of the earlier ones had three screws, instead of just one.
Interesting. *Those* I don't have -- though I have some octal ones which were used mostly for relay sockets in industrial controllers.
Do you have any "loctal" sockets around still?
IIRC, the overall width of the connector is the same. They have simply taken some of the thick walls of the 8-pin version and added another pair of slots for the blades -- and of course the internal guide grooves for the wires under the blades.
They don't bother documenting the width for either those or the
8-pin connectors in that catalog page.
Certainly if the connector is wider, I won't have room to widen the dies for my AMP crimper for the modular plugs -- and AMP/Tycho does not sell dies for that crimper. But perhaps I could work with one of the cheaper "pliers" crimpers for that purpose.
Then you would probably like my crimpers for 8 ga through 4/0 terminal lugs. It is a hydraulic head, with the choice of a hand-pump, a foot pump (which I don't have), or an electrically-cycled pump. I'm set for all of them except 4/0. I don't have those dies. There are two heads -- one for 8 Ga through 2 Ga, and the other for 0 (1/0) through
4/0. I got the electrical pump first -- as part of a surplus sale when I was after something else -- but once I saw it I realized what it was and kept it.
For the smaller range (8 Ga through 2 Ga) there are other self-contained hand-held and hand-pumped hydraulic crimpers -- but for the 1/0 through 4/0, the head is always separate. I first *used* one of those when I worked for Melpar back in the mid 1960s, and they had the foot-pumped version at that time. This is why I recognized the electrical pump when I got it. :-0
Somewhere I still have a crimper made from a smaller arbor press than the 1/2 ton one -- dies and guides which were semi-affordable. I now have a really nice press by T&B Ansley which came from a hamfest. Thank goodness I had a folding wheeled cart to carry it back to the car. :-)
Yes -- but we were talking about the plugs, not the jacks.
In the plugs section, only the narrower one is called a "4P4C". The wider one is called a "6P4C", and is given a WE part number of "623", while the "4P4C" is given a WE part number of "616". Of course, the "6P6C" is also given the WE part number of "623".
it seems that there is a bit of confusion between the terminology of the plugs and the jacks. Measuring the width of my example of a "4P4C", I come out with 0.298" (Probably 0.300" was the target dimension.)
Note also that there are some other specialized ones which I don't see here. There is a 6P6C which has the locking clip offset to one side which is used as a serial port on DEC VT-320 terminals -- and I think the VT-220 as well.
Amp makes a set of dies for my crimper to handle those too.
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O.K. Though you seem to have either dropped a digit in the .sig, or added one i the sentence above. (I suspect the latter, as most DD forms which I encountered were three digit -- especially ones as common as those.
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