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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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    ...we'll learn more by wandering than searching...

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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
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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..........
    Sincerely,
    Toolmaker51
    ...we'll learn more by wandering than searching...

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    Rikk (Aug 9, 2022)

  9. #815
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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.
    Sincerely,
    Toolmaker51
    ...we'll learn more by wandering than searching...

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