Sunday, May 31, 2026
Norton factory at the IoM
Year 1920 Isle of Man TT Petty #61, Brown #56 and North #63 work on their Norton motorcycles in the garage.
Saturday, May 30, 2026
Friday, May 29, 2026
Casting a chain
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| ICS Reference Library, International Textbook Co. 1901 |
The preliminary text to this chapter points out that it would be quite difficult to cast a length of chain, the sand mold would be complicated as would the system of gating each link. The solution is to cast individual links, place them as shown and then pour each connection link. These days to make a link, we form wire into a loop and weld the ends.
Family mystery/history
Stanley Surform
| Thanks, Derek! |
Thursday, May 28, 2026
Wednesday, May 27, 2026
Armstrong Whitworth Ensign drawing
In 1934 Imperial Airways approached Armstrong Whitworth for the design of a new metal multiengine airliner. The chosen design seated 40 passengers and utilized 4 engines as that was seen to be desirable to passengers. Range was 1300 miles, suitable for the Empire routes of the day. Development took longer than expected as Imperial Airways updated the requirements several times but the first commercial flight took place in 1938. Further, the focus of the industry on military aircraft in the late 30s caused further delays. Once the airplane was flying it was found that despite the 4 engines it was underpowered and the engines were later upgraded to Wright Cyclones. However the war had started and production ended with only 14 made. The military took over the planes and they served through the war and retired in 1946. All were scrapped.
Tuesday, May 26, 2026
Anodized aluminum drinkware
I don't recall any of the drinkware in this ad but does anyone remember these very cool (cold) metal tumblers? The blue anodized ones were beautiful...
Monday, May 25, 2026
Special Products Division
Strange times in the recreational vehicle market. It seemed every company was playing with snowmobiles, AMF owned Harley Davidson, and in this ad, New Holland of Sperry Rand is making vehicles that defy description. Of these three, I think I'd pick "the Wedge" and park it on my front lawn.
Monday Mystery, Java Steel stick
Sunday, May 24, 2026
Sidecar Sunday bonus, The Flying Bedstead
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| Thanks JP! |
But is it a sidecar? Australian Peter Dunscombe was racing a Vincent powered sidecar when he decided he needed to improve it. About that time Owen Greenwood's Mini-based "sidecar" was blowing away the competition in a very un-sidecar-like machine in England and it was that machine that inspired him to build this one.. Once again, a 3 track vehicle rather than 2, based on a Mini front end. When the Vincent started getting long in the tooth, he moved to a Suzuki GT750 Waterbuffalo engine shown here. Lack of space dictated the pipes location. It was far from ideal. The whole story here.
Saturday, May 23, 2026
Moto Major
The Moto Major was built in 1948. Designed at an aerodynamic research facility, it was a carry over from the 1930s streamline styling trend. There was a single and a twin planned, the single was the only one built. The longitudinally oriented crankshaft facilitated shaft drive. Unfortunately, it never went into production. The whole story (lots of detail) here at the Vintagent.
Friday, May 22, 2026
Know your lead acid battery
Back in the day when batteries were rebuildable. Outside connectors for each cell, this is where this weird cell tester might be used for diagnosis.
Thursday, May 21, 2026
Shop Tips
Hey, that's actually a good idea!
Hours of reading... one of a million or so "shop tips" from Popular Mechanics- BTW that was uhhh... 60 years ago.
Tuesday, May 19, 2026
Innovation from Alcoa
J N Lapointe broaching machines
When I was about 14 years old, the female spline in the rear hub of our old Allis Chalmers B wore to nothing and that was hay mowing done for that day. I pulled the wheel hub and visited a local machine shop who tried to explain why they couldn't help (especially at the price we could afford...)
Putting new steel in where it was needed seemed simple enough to a guy who had no idea how the spline had been accomplished in the first place. When the broaching process was explained to me, I realized that it was an integral part of manufacturing, though I'm not sure I've ever seen an actual machine. Simply explained, a lathe removes metal by chiseling it away in a rotational motion, broaching chisels linearly. No news to many of the audience, I know, but a broach is effectively a collection of single-point cutting tools arrayed in sequence, cutting one after the other. Broaching was developed during the 1850s as the need for accurate keyways in shafts, pulleys and gears developed. in the mid 1890s, Joseph Napoleon Lapointe, originally from Ste. Hyacinthe, Québec, invented a much improved broaching process and left Pratt and Whitney to start his own company. That company, Lapointe Machine Tool, struggled along for awhile till J N was forced out in 1911. He and his son immediately started the J N Lapointe Company, making broaching machines like the ones in this post in direct competition to his former company. The original Lapointe Machine Tool company is still around. J N died in 1928 and the son Francis shows up later in Ann Arbor at the American Broach Co. which served the automotive companies and munitions industry, especially during WW2. It is also still active today under different ownership.
As for that struggling, sunburnt teenager in the hayfield, he ultimately got a used hub at a wrecking yard, first experience with that world, and the haymowing resumed.
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Cyclopedia of Modern Shop Practice, American Technical Society Vol III, 1919 |
Monday, May 18, 2026
Advances in visors
We've all seen this before, I'm sure.... But every time I see it, I am always amazed that an engineering/marketing team thought it would sell...
Sunday, May 17, 2026
Sidecar Sunday
The 1933 model year was one of the lowest production years in Harley history, with only 2671 big twins produced and a total production of 3703 units (includes singles and small twins). Both motorcycles pictured are powered by 74 cu in. sidevalve engines with hand-shift three-speed transmissions. Of the two motorcycles used in the photo shoot, the sidecar model, is the rarest with only 164 being manufactured.
Saturday, May 16, 2026
Little Tonka vans
Friday, May 15, 2026
Another good use for old pistons

Thursday, May 14, 2026
Wright reciprocating saws
Wright Power Saw & Tool Corporation had a different idea for chain saws. The saws at the time were heavy awkward and the chain design was prone to kickback. Their first product in 1947 was a pneumatic-powered reciprocating saw designed primarily for underwater demolition, marine dock building, and military applications, but was soon adopted for logging. Tapping into the commercial logging and farming boom of the 1950s, Wright adapted its reciprocating technology to gas engine powered units. Initially the reciprocating action was directly worked from the crankshaft with its own connecting rod, no clutch! Although the machine was refined over the years, it always cut slower than a comparable chain saw and by the 1960s, they had moved on to a conventional chain arrangement and the manufacture was contracted out to Poulan. They went out of business in the 1970s.
Granite surface plate
I've wanted one of these for years- decades! It's not been a must-have but definitely in the nice-to-have category. Besides, it gives my vernier height gauge a home. It had been sitting in a friend's shed for 20 plus years ago, when he bought some forgotten object, it was given to him. My son quipped that he would remove it from my shop in 20 years...





































