View allAll Photos Tagged interlock
"Viaducts" 20 Interlocking Triangles + Self-Interlocking Icosidodecahedron 210 units
2-fold view.
It has been a bit since I posted anything new, not because I have not done anything new (quite to the contrary), but rather because most of my new work has been confined to my second book, on decorative modular kusudama origami, which is now finished its first draft.
This structure is (as far as I am aware), the first ever combination of a woven solid (the "self-interlocking icosidodecahedron") and a compound (the "20 twenty triangles") in a single composition. I have previously disliked compositions of multiple compounds together, on account of their non-homogeneity, but here they are visually integrated rather well. In many ways, this is visually similar to "Inconceivable," but this model is considerably more airy and open, in spite of its complexity. This was not my first plan for this weave, but I think it turned out well enough. The names refers to the crimped 2-fold axis units which form bridge like shapes that remind me of viaducts.
Designed by me.
Folded out of copy paper.
I have never seen this type of building block. If you know something about it, please share your knowledge with us.
I wonder whether this system any stronger than traditional bricks. The overlap makes it seem as if it is. If the blocks were actually in contact with one another (and even connected), then it might be effective. However, since the blocks are separated by a layer of cement, isn't the wall only as strong as the cement itself?
I'm no structural engineer, and there may be something I'm not picking up on that makes this system superior. However, if it were better, why is it this is the first time I have ever come across it in over four decades of looking at old buildings?
Goldendale, Washington.
New York Central's "KN" tower stands peacefully at rest in Kentland, Indiana in June of 1966. Frank Garon photograph. KN tower stood at the intersection of the NYC's Egyptian line (nee-CI&S, nee-IHRR) and PRR's Effner to Logansport branch (nee-PCC&StL). Tower was built in 1906 and came down around the late 1970's. The switch in the foreground led to a passing track that ended at Sheff tower 4 miles south of here. The NYC was double tracked through here until around 1953-1955 from Morocco to Sheff. The PRR also had a long passing track that came through here in earlier days so there were 4 diamonds here. US 24/52 crossing in background. View is looking N/N/W. In two years, both lines would be under Penn Central control.
Foreman Jim Bottoms continues his trek northward after getting permission to pass thru the "Wabash" Interlocker at Shops. I&M employees have recently been referring to the Norfolk Southern crossing interlocking using this name. I don't know if the name has been officially changed, or if I&M employees are just having a bit of rail history fun.
48 Interlocking Squares 192 units
3-fold view. This design applies a macro-polygonal technique to the secondary compound of 6 squares to form a fairly straitforward compound of 24 squares. 6 squares were then added for facial stabilization. Following this, I made the decision to add an additional 12 squares to help fill in the open square faces. 6 additional squares were then added to reinforce the 12 additional squares. All of the squares possess identical paper proportions (.875x6.6875), but each set of sqauers has a distinct weaving relationship.
I initally envisioned this as similar to "Rebar," but it is visually unlike the former, so its relation is primarily in principle.
Designed by me.
Folded out of copy paper.
Origami model designed and folded by Peter Stein, September 2017
The paper I used is handmade by John Gerard (wonderful paper!)
The locking mechanism is borrowed from Jeremy Shafers "interlocking rings" (he really shows two rings in his model, mine is just giving the illusion of two rings) - it was folded for a silver wedding of two friends,
wetfolded from a square piece of paper (19x19cm).
NS 5310 passes Morris Tower as WPBS-03 rolls through Morrisville, PA, off the NEC and onto the thorofare track and back onto CSAO rails. August 1, 2018.
The BNSF Hill Track (at left) located near 19th Street and Western Avenue connects the NS CJ Mains with the BNSF Chicago Sub at Western Avenue interlocking. The track on the right leads to BNSF's Western Avenue Yard.
SD40-2 #710 rocks the P3 passing a winter light favorite spot at Iris Interlocking bound to Hialeah Yard with New Blue GP40-2 #419 trailing. IM, racks, and flats with two dead loads in between.
Interlocking tower in Bangkok's Hua Lamphong station. The tower was built in 1971 and is going to be closed in the near future.
Interesting building in Shanghai by British architect built in 1930's. It was a food manufacture originally and has been converted into commercial use recently.
For FCF we'll just look at a couple of classic logos like this one on a VTR 40 footer shoved to (and through) the end of a spur in Florence, Vermont
Twenty Interlocking Irregular Hyperboloidal Dodecahedra 600 units
3-fold view.
This is the first working iteration of my magnum opus wireframe project for summer 2022: a supremely complex compound of 20 irregular dodecahedra. This is the icosahedral/dodecahedral symmetry extrapolation of the compound of 8 Dodecahedra I designed a month or two ago. Here, each dodecahedron corresponds to a single 3-fold axis representing the face of an icosahedron (or a vertex of a dodecahedron). This design also illustrates the importance of scaffold construction methods: assembling a model such as this a frame at a time is simply impossible, as the innermost vertices are deeply imbedded within the model. I believe that this is the largest ever compound of polyhedral frames. Designing this model was a considerable effort- this is version 4.5, and it could really use a refold.
Designed by me.
Folded out of copy paper.
Car park, Nottingham – a slightly different perspective on an image I uploaded last year. © All rights reserved 2013
This image must not be used on websites, blogs or other media without my explicit written permission - failure to do so may incur copyright infringement notices/publication fees.
the go-kart racing track was right beside the roller-coaster (both are now disassembled) in this abandoned amusement park
For 1000 lire (half Euro, at that time) one could race for 5 minutes. But It was never enough, and we kept spending our hardly earned "student" money.
Go-kart racing can be tricky especially if you want to finish among the firsts.
In fact, to keep high speed, you'd better push the break pedal with your left foot without releasing the gas pedal (gas pedal stays pushed down all time).
By doing so the kart slows down approaching curves but the engine doesn't lose its torque therefore you're quickly at top speed again when exiting form the curve (after releasing the breaks that is)
this is what we guys called "a tavoletta" driving stile (impossible to translate)
this way of driving is efficient but puts a lot of stress on breaks.
the go-kart track manager quickly discovered this "dirty" driving stile and, to our surprise, put an interlock between the break and the gas pedals so that the gas would automatically disengage on every break push.... and you had to rise your right foot to engage gas again
I twas a bad thing, we almost lost any interest in kart "racing"
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the "insomnia" mission with Marco75
C&NW engineer George A. Johnson stands on the walkway of GP7 No. 1519 that is stopped with suburban train No. 6505 at Mayfair Station, in October 1958. No. 6505 is a non revenue equipment train that tailhosed from Chicago to Skokie, before returning to Chicago as Train No. 650. The train is seen here waiting for traffic to clear at Mayfair Interlocking, before shoving across Track Nos. 2 and 3 and backing up the Skokie Line. Locomotive fireman Bob Olson uses this opportunity to photograph his train and another eastbound train approaching on Track No. 2. GP7 No. 1519 is notable for being one of the original EMD demonstrators. Engineer Johnson began his railroad career as a locomotive fireman in September 1926. Photo by Robert E. Olson. D.W. Davidson collection.
Designer & folder: Michal Pikula
Paper: 80gsm copy paper (Quill)
Unit: rectangle 1:1.25, rectangle 1:1.75, rectangle 1:2.25, rectangle 1:2.75, rectangle 1:3.25, rectangle 1:3.75
Folded in February 2014
It is possible interlock in this way n prisms (n≥2).
Looking out the door glass from the long gone 14th Street interlocking tower that controlled crossing rail routes near downtown Birmingham Alabama. Occasionally, a tower operator would allow a railfan inside until another crackdown on unauthorized. I could not resist taking a shot from the wrong side of the door as a L&N train passed. Scanned from a June 1980 Ektachrome Slide.
40 Interlocking Triangles 120 units In my hand. Over the years I have folded compounds of 20 and 30 triangles, so in honor of OrigamiUSA’s 40th anniversary “40 challenge”, I present a compound of 40 triangles. It has been a few months since I have produced a project which I would consider a “magnum opus.”
Here, two pared triangles each represent one face of an icosahedron, and each of the two in a pair are rotated with respect to each other. Obviously, this means that the 40-compound of triangles is actually two 20-compounds combined, and given their relationships, I’m sure each of the two “20-compounds” are polypolyhedra (I’m not sure which polypolyhedra they might be- I think one set of 20 might be pph#52). However, I designed the structure as a single unit, and all of the triangles share the same proportions. I particularly like the 5-fold axes, which almost incorporate a pseudo “10-fold” axis.
I don’t know whether anyone besides myself would endeavor to fold such a compound, but in case anyone is curious, the proportions used here are .75”x7.75”(1:~10.33). Since space has become an issue for me, I often fold with rather thin proportions these days. The finished model is ~8.5” tall, which is not bad for a construction of this magnitude. I would say that weaving didn’t seem too complex to me, but I don’t know how much that means anymore.
Designed by me.
Folded out of copy paper. (Some of it was 65lb pastel paper, so if the units look distressed, that is probably the reason.)
NS 3565 works a short local job as it pulls towards the signals at the WABIC diamonds with a short string of cars for the CSX and the Staley (Tate & Lyle) plant.
An inbound BN suburban train has just cleared Union Avenue Interlocking and is seen approaching Canal Street headed for CUS, in November 1981.
Extra 918 West prepares to pickup loaded hoppers at Radum. In the foreground is the manual interlock of the SP San Ramon Branch crossing. Dave Stanley photo ©2023
Griffith, IN interlocking tower, Griffith, IN. This tower was built in 1924 Upon closure in 1999, Elgin Joliet & Eastern RR donated it to the Griffith Depot Museum. It was moved to its present site in 2000. It is visible along the Erie-Lackawanna Trail. .
CNR-CPR interlock between Bala and Mactier Subs - commonly called a 'diamond' - there are 4 'frogs' (rail intersections) worth $25K each with life spans measured in months
CNW SD40-2 6923 leads a mix of power west through HM interlocking. this is now known as CP Park on the UP.