Pratt & Whitney Sine Rifler in action - Clip 1

Pratt & Whitney Universal Sine Rifler circa 1900

[@jroneal1975]

backlash in the old sine bars is taken up by adjustment in the rack. There are 2 racks in the sine, what we often did, was to split the key in the pinion, so as to displace the adjustment as to wear. I've also looked at a clockspring on the sine shoe side..

[@BurtonsAttic]

Cool machine!

[@spencertoolandgrind]

Burton's Attic, Hope I can buy it, someday.

[@pinhead1304]

beautiful

[@spencertoolandgrind]

I believe this a No# 3 Rifler. According to a old book I found on line.

[@George_Doc]

Bless the Lord, this sinus machine

[@spencertoolandgrind]

I don't know... I never asked. But I'd imagine that since the cutter head travels past the barrel, the backlash is taken up.

[@pbike257]

Very Nice Mark... You were at Al's shop recently?

[@darrellblanchard2362]

Looks like a rolling block action

[@spencertoolandgrind]

Nope a Pratt No.3, Thanks for asking, Mark

[@spencertoolandgrind]

I've seen pictures of small Sine Rifler. All black and white... Never heard of anyone one having a modern one.

[@gdaychina]

Which is the best model rifling machine to buy and do you know of anything worth buying, does anyone manufacture new machines

[@BrewPub]

Anyone have an idea on the typical price for a 1/2B X50 or 1B X50 Pratt & Whitney gun drill? What about price of a sine bar rifler like the above one?

[@spencertoolandgrind]

Found a lot of abused and beat up Pratts around Detroit. Prices from $5000 and up. 1/2 B's are expensive. 1B's arre cheaper but a thrid bigger. Found Three 1b's and one 1/2B last year. Beat all to hell. Sine Riflers are extremely rare and if you can find one all in one piece buy it. Also, I noticed that some of these guys are doing CNC cut rifle.

[@BrewPub]

What technology has replaced these machines now?

[@juanangelariotti]

buenisimo video yo tengo una estriadora parecida pero doble es brno como esa bueno pronto subire el video con mí maquina.

[@spencertoolandgrind]

Their are people that make modern CNC riflers. Names escape me.

[@spencertoolandgrind]

That was a barrel for a rolling block. Good guess

[@spencertoolandgrind]

No, it is a Pratt & Whitney.

[@spencertoolandgrind]

What kind of price? Mark

[@GeneralG1810]

Is backlash a problem at all?

[@gdaychina]

Is there a machine small enough for pistol barrels only

[@pauldavidson6321]

Pistol barrels would be rifled in long lengths and then cut to pistol length on a lathe for efficiency.

[@spencertoolandgrind]

I doubt6 if she has anymore than 3 to 5 horsepower.

[@crappytoast]

DeHOFF ?