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    Hick Hargreaves Engines

    I have some more photos from a collection of Hick Hargreaves images. Hick Hargreaves were one of the big British mill engine builders based in Bolton Lancashire. They pioneered Corliss valve mill engines in the UK and made a large number of them. They also made drop valve and uniflow engines at...
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    Vertical Borer with some modifications

    This is another photo from a collection that came from Hick Hargreaves, Bolton. This is (I think) a Richards vertical borer which has had a milling head attached. There is also what looks like a newer control or drive of some type on the left hand side. Can anyone identify what these are and...
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    Large Horizontal Borer

    This is a scan of a photo (one of many) that our museum has acquired. The photos are all related to Hick Hargreaves, a well known Bolton company that I have mentioned in other threads. This caught my eye because it is a high quality photograph of a job set up for facing on a fairly large...
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    Impressive worm gear cutting video

    I came across this video and was impressed by the ingenuity of the setups and methods, including using part of a nearby mountain to index against. He has other videos that I have not investigated yet, but I certainly will. Machining a Dividing Head's Worm Wheel Replacement - YouTube There is...
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    Smart and Brown 1024 tachometer (from S&B insert tooling)

    These are some photos of fitting a tachometer to a Smart and Brown 1024, along with some other wiring changes to convert it to a VFD drive etc. The photos were requested in the S&B tooling thread. This is the optical sensor arrangement: and this is how it is attached to the back of the...
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    Vernijigger

    I thought you might be interested in this unusual old tool. It is a Vernijigger from the early 1950s and was used as a way of locating drilled holes reasonably accurately where the cost of a full drill jig or a milling machine could not be justified. The makers claim that it could be used to...
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    ER Watts & Sons tripod thread

    I need to make an adaptor to mate an ancient E R Watts & Sons tripod to a light fitting (very trendy house furnishing). The thread for mounting the instrument (don't have this) to the top of the tripod is a bit unusual and I am have some difficulty deciding what it is. The thread is male about...
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    Mitsubishi D700 VFD RS485 programming problem

    I know this is a really long shot, but I am getting desperate. I am using a Mitsubishi D700 series VFD, and need to be able to control it using RS485 communication via the Mitsubishi protocol. I am having problems getting the motor to start(so fairly fundamental). I am using full duplex RS485...
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    OT - electronic components data sheet drawing projection

    Is there a convention or better still any standard that determines the projection of mechanical drawings (not schematics) that are provided on the data sheets for electronic components? I think it is normal to use third angle projection, but I am using a component where the projection is not...
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    Heidenhain ND780 display temperature dependance

    This isn't a specific Deckel Maho etc query, but I think there is more chance of a response here, so please bear with me. I bought a 3 axis Heidenhain ND780 to replace a very old Elesta read out for my Thiel. It is a great DRO and I have no problems with it, except for one issue which may be a...
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    Crossed Helical Gears - Helix Angle Tolerance?

    I would be grateful for some help from the gear gurus. What is a typical commercial tolerance for the helix angles (or lead) on a pair of crossed helical gears? My guess is that as the helix angles of the gears departs from what is desired (say 45 degrees) that the designed centre distance...
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    Shaper Cross Rail - best approach?

    I am rebuilding a small shaper (AMMCO). It is a bit of a toy really, but I would like to make it as accurate as I can. So far I have not had too many problems and have successfully scraped in the vertical ways to remove a small amount of wear and leave them truly square. The next major part that...
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    Ward Tooling Catalogue "Edition 52"

    I just bought an old Ward catalogue, Edition 52 of "Ward small tools, attachments, chucks, accessories and capacity charts for capstan and turret lathes". I think the book, which is in perfect condition, dates from the mid to late 50s, but I don't have enough knowledge of Ward supplied tooling...
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    Switch de-bounce for PLC - best method

    I need to use a number of simple old fashioned mechanical limit switches with a PLC. I am concerned about the need to de-bounce these switches in the system. I am aware of hardware solutions to this problem and know how to handle this purely in software, but I am interested in the best ways to...
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    Economical programmable panel display

    I am working on a project which will incorporate a control panel with a number of temperature displays, other instruments and some switchgear. I have a pump which is driven by a VFD. It would be very useful to display the pump speed (in Hz would be fine) on the panel. I can get an analogue 0-5V...
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    Taper pin standards - US machine tools 1930s

    I am reasonably familiar with UK and metric taper pins as used in machine tools, but am currently working on a 1930s US saw (probably lend-lease :eek:). I need to fit new taper pin(s). Is it reasonable to assume that the taper is 1:48 (1/4" per foot), or is some other standard of taper pin...
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    Butler shaper ratchet/pawl feed design

    Our workshop has a Butler shaper that is used fairly frequently. We have rebuilt this shaper into good usable condition and for the most part it is excellent, operating almost silently. One problem we have with it is the ratchet and pawl mechanism for the cross feed. This has never worked very...
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    Moilins System24 and associated developments

    Molins System24 and associated developments Molins designed a truly innovative manufacturing system in the 1960s that pulled together a host of new ideas - Cell based production High speed multiple spindles for machining Aluminium Computerised numerical control (but not really CNC in the...
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    Heidenhain KT130 edge finder views and experiences - again

    I posted this message in the General forum, but unfortunately got zero responses. Perhaps there is a better chance in this forum so I will try again. I hope someone here can help. ------------------------------------- I have recently replaced the DRO and scales on my mill, which were ancient...
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    Heidenhain KT130 edge finder views and experiences

    I have recently replaced the DRO and scales on my mill, which were ancient and failing - see http://www.practicalmachinist.com/vb/general/oldest-dro-everyday-use-288709/ for details. For a variety of reasons, I stuck with Heidenhain scales and counter (ND780) and the installation was fairly...
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