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06-22-2019, 12:54 PM | #1 |
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Straight Slotted instead of Cross-Point
What's the accepted history behind Henry Ford useage of the slot-head screws over the use of cross-points? Were they cheaper or what? I think they actually look better -- the slot-heads I mean
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06-22-2019, 01:12 PM | #2 |
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Re: Straight Slotted instead of Cross-Point
The Phillips screw was not invented until after Model A production ceased. Came into use around 1937.
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06-22-2019, 04:47 PM | #3 |
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Re: Straight Slotted instead of Cross-Point
Robertson Screws (a square recess) was used on Canadian A's.
Joe K
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06-22-2019, 05:36 PM | #4 |
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Straight Slotted instead of Cross-Point
rfitzpatrick,
Ford Motor Company of Canada was convinced by Mr. Robertson that the use of his Square Recessed screws would aid during assembly and help speed up things a bit. Plus, they are a Canadian product. My March engine number Standard Canadian Phaeton has an interesting mix of mostly Robertson with flat blade screws in weird places. Darryl in Fairbanks |
06-22-2019, 08:03 PM | #5 |
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Re: Straight Slotted instead of Cross-Point
My understanding of it from Canadian friends is that Robertson invented the square drive in the head of screws and allowed the American companies to use them in their Canadian plants under patent license. There was a deal in those days that said Commonwealth countries deal with Commonwealth countries unless there was no option.The US found itself excluded from about 25% of the world's population for sales (because they tipped some tea into a harbour and were no longer part of the Commonwealth) so some of the American manufacturers set up plants in Canada. Their products then qualified for sale in the Commonwealth. When the US big wigs saw the screws being used in the Canadian plants and how much time they saved, they wanted to use them in the US but Robertson said "No". The US plants had to continue with slotted heads until a guy by the name of Philips came along and the rest, as they say is history.
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06-22-2019, 10:12 PM | #6 |
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Re: Straight Slotted instead of Cross-Point
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06-23-2019, 12:53 AM | #7 |
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Re: Straight Slotted instead of Cross-Point
The version I read on this is that Henry Ford wanted to buy out the Robertson Co. so he could use them in US production. Robertson did not want to sell out so in the US, Ford continued to buy cheaper but not as good slotted screws. Ford Canada was free to use Robertsons without needing to own the company.
Canadian Model A's do not use Robertsons 100%, my Tudor has slots in places, but most of the body & trim etc has the Robertsons. From 1932, use of Robertsons ended in Canadian Ford production. Cheers. |
06-23-2019, 02:24 AM | #8 | |
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Re: Straight Slotted instead of Cross-Point
Quote:
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01-28-2020, 05:36 PM | #9 |
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Re: Straight Slotted instead of Cross-Point
https://youtu.be/R-mDqKtivuI
1.6 M views, someone must be interested. |
01-28-2020, 05:58 PM | #10 |
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Re: Straight Slotted instead of Cross-Point
I believe the Phillips cross head screw was first used by GM on the 1937 Cadillac assembly line. I read this in an older Hemmings publication.
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01-28-2020, 06:39 PM | #11 |
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Re: Straight Slotted instead of Cross-Point
Reed & Prince went heavy into aircraft grade fasteners before Phillips ever went that direction. Now days it all going toward Torx. It's all about putting things together rapidly with self centering tooling. If you work with Richardson stuff you find that they don't center up as easy as the cross recess designs do. It's about the same for clutch head designs. They hold up well with assembly and disassembly but it takes a bit more time to center. I know we're not talking much time but over a long shift, it can add up.
The Richardson square drive and the clutch head design also take a bit more complicated process to manufacture the fasteners. GM used the hell out of the clutch head design for a while but it sort of petered out over time. |
01-28-2020, 06:57 PM | #12 |
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Re: Straight Slotted instead of Cross-Point
Both Phillips and Straight slot suck. Wish we had the Robertson. I have noticed lately if you go to the big box stores it is getting increasingly harder to find straight slot hardware for our old Ford's. Places like McMaster Carr continue to supply what was common.
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01-28-2020, 07:49 PM | #13 | |
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Re: Straight Slotted instead of Cross-Point
Quote:
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01-29-2020, 09:22 AM | #14 |
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Re: Straight Slotted instead of Cross-Point
Off subject a bit. I lost an eye due to a straight slot screw. I try to stay as far away from them as I can.
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01-29-2020, 09:54 AM | #15 |
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Re: Straight Slotted instead of Cross-Point
I had to buy hollow ground screw drivers to do gunsmithing. It takes a lot of special care not to damage a straight slot screw fastener. Most of my injuries are from safety wiring procedures and cotter pins not quite tucked away well enough but I have poked myself with a screw driver a few times as well.
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01-29-2020, 10:57 AM | #16 |
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Re: Straight Slotted instead of Cross-Point
I replace slotted heads with Phillips heads on my coupe every chance I get. Reduces injury to myself and the car.
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01-29-2020, 02:35 PM | #17 |
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Re: Straight Slotted instead of Cross-Point
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01-29-2020, 08:27 PM | #18 |
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Re: Straight Slotted instead of Cross-Point
Robertson screws have become very popular in the U.S. with patio makers (in wood and recycled plastic) and other like uses. The entire boardwalk in Miami Beach is put together with Robertson screws.
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01-30-2020, 05:10 PM | #19 |
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Re: Straight Slotted instead of Cross-Point
I've been given to understand that Henry refused to pay for the rights to use the Phillips head fasteners when they first became available (not un-like his refusal to pay Bendix for the use of the "self-energizing" brake design until '49). I believe Phillips head fasteners began appearing on 1942 Fords. DD
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01-31-2020, 08:48 AM | #20 | |
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Re: Straight Slotted instead of Cross-Point
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