Grasshopper Escapement

[BenVanDeWaal]

What is the use of the second (smaller) scapewheel? If the pendulum pivot (with the grasshopperframe) would be raised (about 1/2 the radius of the large wheel), both palletarms would be tangent to the SAME wheel. The arm-lengths should be adapted.

[TheDigit100]

Hi;

Love the clock, your input would be appreaciated in Gearotic Motion upcoming plans for this same typ ofe escapement.

Cheers

[jonfraz]

Am I right in understanding that the escapement releases the gears and allows them to move forward a short distance each time? And that this also restores some energy to the pendulum and reduces the effects of friction/air resistance? If so, what is propelling the gears to rotate in the first place? I hope someone can help!

[Vlad3000]

@jonfraz

I'm only starting to look into this now but from what I've gathered so far the answer is yes.

Answer B is that a coiled up spring is what gets the gears going. This is what you wind when you wind a clock.

Without the escapement the spring would uncoil to quickly.

[MrLeonard55]

Can i get some plans for it?

[Axbent]

@MrLeonard55 In Model Engineer you can find a series on this, currently running.

[MrLeonard55]

Are there any plans available for this clock?

[glathoppa]

This is a copy of an escapement by an American writer of clock construction articles.The escapement shown is not something John Harrison would ever have made. The torque delivery characteristics ignore Harrison's stipulations as comprehensively as any I've seen.

[gramule]

@glathoppa good to see Harrison's grasshopper movement. i have read sobel's longitude, and seen an actual harrison at prescott museum of clocks.

[dan020350]

how long did it run ?

[rendered555]

Nice model. thumbs up!

[VinnyMartello]

Is that like a semi propetual motion machine?

[bshallard]

This is the timekeeping part of a clock, called the escapement. Various types of escapement were invented seeking the most accurate timekeeping, and this one was invented by John Harrison, made famous by the book and BBC mini-series "Longitude". His famous sea-clocks are on display at the Greenwich Observatory. This particular escapement was built by a hobby clockmaker who's name I forget just at this instant.

[KingMe5000]

what would YOU DO WITH THIS! I dont Get It! Message me please, it looks cool but dont get its purpose =(

[daninspokane]

Think: Clock

[pittedthighs]

demonic sh*t

[DAKOTA56777]

i don't have cable and natural gas also i get power from solar panels and turbines i don't have friend cause i don't trust ppl and i get water from the rain what else oh yeah F*ck u

[polonium9]

you sound like my kind of person. polonium9, nice to meet you!

[DAKOTA56777]

lol.

[WarPig182]

THOSE DON'T WORK. YOUR JUST SOME SUPERSTISHS BASTERED THAT GOES INTO A NERVOUS BREAK DOWN EVERY TIME YOU KNOCK THE SALT OVER. i hate chain letters

[Gunstick]

I only realized how this escapement works when I built it myself using the physics simulator PHUN

[iwantram3n]

lmao

[KurtBMX250]

Its got to be pretty difficult to draw it in Phun

[monkeyzNdogz]

Incredibots 2 SOOOO pwns Phun

By the way there's a wiki animation of this

[hmadd3]

Nice Vid indeed. Most of the animations describing this mechanism don't show the movement accurately in relation to the system(see wikipedia)

xwizbt: The thing about sophomoric tools like pataleero is that they are more likely to procreate than more deserving folk I'm afraid.

[xwizbt]

I came here after wanting to find out more about the Corpus Clock. Thank you for providing an image of another grasshopper escapement - albeit not a chronophage! - and as for all the idiots posting comments like 'dat wus horrible', let us all doff our caps for natural selection. Pataleero - you're doomed.

[Everfalling]

the sad part is, with an abundance of technology and lacking natural predators, the stupid are able to survive quite easily

[KEvronius]

where would we be without your astute observations?

KEvron

[isaimoreno666]

Nice sort of watch!!!

[benzod32]

wow I have bin fixing clocks for 10 years now and I will even work on Atmos Clocks But I don't think I want to try one of these lol

[nCitoS]

I think that's the "Praying Mantis" Escapement.

[aldoaldoz]

At last I understood how the grasshopper escapement works. I first read about it on Dava Sobel's "Longitude" book. In her book there were some descriptions, but no pictures. Since then I'm looking for running images of John Harrison's mechanisms... thanks for posting this!

By the way, are there some videos about the H1 clock? I could only find photos, nothing running!

[HanKatarn]

I'm doing the same! I simply must see these things running to really appreciate them!