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Thread: High-quality black-and-white photographs of large old machines and tools

  1. #811
    Supporting Member Toolmaker51's Avatar
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    What appears to be cutter heads, the inclined 'toolposts' is a very precise yet easy adjustment in simultaneous centerline and diameter correction for setup, independent of the 'cross slide'.

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    mr mikey (Aug 8, 2022)

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    Supporting Member Frank S's Avatar
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    The name for the tooth pattern sometimes called a double helical but most often called a Herringbone. As I mentioned in another thread about the ability to transmit more torque with a helical than a straight cut gear the Herringbone design takes that to a far new level not only in the ability of handling increased torque the design does 2 more things it virtually eliminates lateral thrust plus can offer near zero backlash.
    Here is a small pair of gear I have made out of aluminum
    High-quality black-and-white photographs of large old machines and tools-img_20220808_141119xc.jpg
    High-quality black-and-white photographs of large old machines and tools-img_20220808_141129xc.jpg
    High-quality black-and-white photographs of large old machines and tools-img_20220808_141142xc.jpg
    Here are a few examples of larger gear sets even right angle
    High-quality black-and-white photographs of large old machines and tools-800px-engrenages_-_85.488_-.jpg
    High-quality black-and-white photographs of large old machines and tools-r-2-.jpg
    Due largely to the double angle cut of the gears which in turn alters the stress angle in the body of both gears a higher ratio between pinion and bull can be obtained since there is also more tooth contact and more teeth in contact than a straight cut spur gear

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    Last edited by Frank S; Aug 8, 2022 at 01:36 PM.
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  5. #813
    Supporting Member Rikk's Avatar
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    Quote Originally Posted by Jon View Post
    Mesta Machine Company double helical gear planer. West Homestead, PA. 1905/1925.
    I would love to see that wonderful machine run.

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    mr mikey (Aug 9, 2022)

  7. #814
    Supporting Member Toolmaker51's Avatar
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    Quote Originally Posted by Rikk View Post
    I would love to see that wonderful machine run.
    As would we all, anything of MESTA Machine Co.
    With us short guys in front..........
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    ...we'll learn more by wandering than searching...

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    Rikk (Aug 9, 2022)

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    Supporting Member mr mikey's Avatar
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    You got my vote. I'd like to see that aslo. In my early years I helped set up machines but nothing that big. Cool stuff. Mr Mikey.

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    Rikk (Aug 9, 2022)

  11. #816
    Jon
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    10,000 ton forging press at Carnegie Steel Company's Homestead Steel Works. 1893-1895.

    Fullsize image: https://s3-us-west-1.amazonaws.com/h...s_fullsize.jpg

    Last edited by Jon; Aug 14, 2022 at 03:12 PM.

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    100,000 tons?
    I think maybe an extra zero slipped in there!

  14. #818
    Jon
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    Quote Originally Posted by 12bolts View Post
    100,000 tons?
    I think maybe an extra zero slipped in there!
    Good call; my error. All fixed now.

  15. #819
    Jon
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    48-inch mill at the Homestead Steel Works. Homestead, PA. 1954.

    Fullsize image: https://s3-us-west-1.amazonaws.com/h...l_fullsize.jpg


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    When a supervisors office is on casters, likely he's many processes to oversee.
    He knows it's a large plant, when that office also has lifting eyes to hoist by bridge crane.

    Of so many pics Jon has presented, this is first I recall depicting duckboards.
    Have made a couple over the years, best surface for prolonged standing, and minimizing chips underfoot. Lifted occasionally, chips are right there, ready to scoop and dispose.
    But end-grain wood bricks still first choice.
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