There is
S&W No. 3 Russian Issue 3, 1880 under consideration.
It is the purpose of this post to show all details of
Extracting Mechanism in order (how I understood) theirs assembly.
Let's take the
Barrel. It is mono detail, one piece of metal with complicated and precise machining. There are three place on
Barrel which take a hand in extracting: (1) on the top right-hand, (2) on the bottom and (3) the
Pivot(?). See more dark color places.
There is female thread (S1) on the right of bottom part.
[IMG]http://img-fotki.yandex****/get/4129/58365765.c/0_9db9b_d5f08_L.png.jpg[/IMG]
Let's take the
Base Pin. It is mono (simple) detail, the tube with male thread (S1) on the left. The male thread is the same as the female one of
Barrel. Also there is the one quarter
Cut on the left of
Base Pin. The internal diameter of
Base Pin (D2) is the same as the internal diameter on bottom of
Barrel.
[IMG]http://img-fotki.yandex****/get/5630/58365765.c/0_9db9c_7148eec9_L.png.jpg[/IMG]
Let's screw in the
Base Pin into the
Barrel.
Note. The one quarter
Cut must be precise on bottom.
Let's take the
Gas Ring. It is mono (simplest) detail, the tube (the ring) with groove. The external diameter of it (D3) is the same as the male thread (S1) of
Base Pin. The internal diameter of it (D4) is the same as the external diameter of the
Base Pin. In other words the thickness of tube is equal to height of the thread.
[IMG]http://img-fotki.yandex****/get/4132/58365765.c/0_9db9d_d1c6aef1_L.png.jpg[/IMG]
Let's get the
Gas Ring on the
Base Pin.
Let's take the
Pawl. It is the assembly which includes: (1)
Pawl itself, (2)
Spring and (3)
Pin (Rivet).
[IMG]http://img-fotki.yandex****/get/6438/58365765.c/0_9db9e_77e90423_L.png.jpg[/IMG]
Let's put the
Pawl in its right place.
Let's take the
Cylinder Catch. It is the assembly which includes: (1)
Cylinder Catch itself and (2)
Screw.
[IMG]http://img-fotki.yandex****/get/5632/58365765.c/0_9db9f_90c564ac_L.png.jpg[/IMG]
Let's put the
Cylinder Catch in its right place.
Note. The right hand of
Cylinder Catch is up.
The initial assembly of
Barrel is completed.
[IMG]http://img-fotki.yandex****/get/4123/58365765.c/0_9dba0_b0ac6d59_L.png.jpg[/IMG]
Let's take the
Cylinder. It is mono detail, one piece of metal with complicated and precise machining. The feature is the square aperture (Q1) into bore.
The internal diameter of bore (D4) is equal to the external diameter of
Base Pin. The left-hand internal diameter (D3) is equal to external one of the
Gas Ring.
Note. One (two opposite) side of square is into alignment with one of
Cartridge Camber.
[IMG]http://img-fotki.yandex****/get/6427/58365765.c/0_9dba1_be0b9707_L.png.jpg[/IMG]
Let's take the
Extractor. It is the assembly which includes: (1)
Extractor itself and (2)
Extractor Stud. The
Extractor is made with complicated and precise machining. The
Extractor Rod is square in section. The external square (Q1) is same as the square aperture into bore of
Cylinder. There is the female thread (S2) on the right-hand the same as male one of
Extractor Stud. And there is the male thread (S3) on the left-hand.
[IMG]http://img-fotki.yandex****/get/6442/58365765.c/0_9dba2_106ea63c_L.png.jpg[/IMG]
Let's put the (square)
Extractor Rod into square aperture (Q1) of
Cylinder.
[IMG]http://img-fotki.yandex****/get/4126/58365765.c/0_9dba3_809a183d_L.png.jpg[/IMG]
The
Extractor is put into
Cylinder.
Note. There is the clearance between external (square) diameter of
Extractor Rod and internal diameter of
Cylinder bore.
[IMG]http://img-fotki.yandex****/get/5638/58365765.c/0_9dba4_c6c1cd91_L.png.jpg[/IMG]
Let's screw in the
Extractor Stud into
Extractor.
[IMG]http://img-fotki.yandex****/get/6435/58365765.c/0_9dba5_63f4db58_L.png.jpg[/IMG]
The
Extractor Stud is completed. The assembly of
Cylinder is completed too.
[IMG]http://img-fotki.yandex****/get/4136/58365765.c/0_9dba6_74ec288e_L.png.jpg[/IMG]
Let's take four details: (1) the
Rack, (2) the
Spring, (3) the
Bolt(?) and (4) their
Nut. The
Rack has eight cogs (plus one aside). The external diameter of cogs (D2) is same as internal one of
Base Pin. The female thread on the right (S3) is equal to male one of
Extractor Rod. The internal diameter of
Rack (D6) is same as external diameter of
Spring and same as one of
Bolt's head. There is an aperture on the left hand (side) of
Rack. It is equal to diameter of
Bolt (D9). The thread of
Bolt (S4) equals, of course, to one of
Nut.
[IMG]http://img-fotki.yandex****/get/6447/58365765.c/0_9dba7_2af9cdf9_L.png.jpg[/IMG]
Let's put the
Bolt into
Spring (or put the
Spring on
Bolt).
[IMG]http://img-fotki.yandex****/get/6430/58365765.c/0_9dba8_8c0bd138_L.png.jpg[/IMG]
The assembly
Bolt and
Spring is completed.
[IMG]http://img-fotki.yandex****/get/6701/58365765.c/0_9dba9_e0ce45ce_L.png.jpg[/IMG]
Let's put the
Bolt (with
Spring) into
Rack.
[IMG]http://img-fotki.yandex****/get/6441/58365765.c/0_9dbaa_b7eb552d_L.png.jpg[/IMG]
The
Bolt is completed. The thread of
Bolt (S4) stick out on the left-hand (side) of
Rack. The
Spring is not tensed.
[IMG]http://img-fotki.yandex****/get/5644/58365765.c/0_9dbab_cf108688_L.png.jpg[/IMG]
Let's screw in the
Nut. The
Rack assembly is completed.
[IMG]http://img-fotki.yandex****/get/5631/58365765.c/0_9dbac_b2e04c19_L.png.jpg[/IMG]
Let's join
Cylinder and
Rack assemblies. The female thread of
Rack (S3) is equal to the male one of
Extractor Rod. The external diameter of
Bolt's head (and of
Spring) (D6) is same as internal one of the
Extractor Rod.
[IMG]http://img-fotki.yandex****/get/5646/58365765.c/0_9dbad_f6924e47_L.png.jpg[/IMG]
Let's screw in the
Rack on
Extractor Rod.
[IMG]http://img-fotki.yandex****/get/5645/58365765.c/0_9dbae_c0214832_L.png.jpg[/IMG]
The
Rack is screwed on
Extractor Rod.
Note 1. The head of
Bolt is into
Extractor Rod.
Note 2. There is the clearance between external diameter of
Rack (which is equal, I thing, to external square diameter of
Extractor Rod) and internal diameter of
Cylinder bore. This clearance is equal to tube thickness of
Base Pin.
The
Rack and
Cylinder assembly is completed.
[IMG]http://img-fotki.yandex****/get/4129/58365765.c/0_9dbaf_dda821ff_L.png.jpg[/IMG]
Let's join
Cylinder and
Barrel assemblies.
The external diameter of
Gas Ring (D3) is equal to the left-hand internal diameter of
Cylinder. The external diameter of
Base Pin (D4) is equal to the internal one of
Bore. The external diameter of cogs (D2) is equal to internal one of
Base Pin and
Barrel.
[IMG]http://img-fotki.yandex****/get/4138/58365765.c/0_9dbb0_38a5ebb2_L.png.jpg[/IMG]
The cogs of
Rack are put into
Base Pin. The
Base Pin itself is put on right-hand diameter of
Rack.
[IMG]http://img-fotki.yandex****/get/5642/58365765.c/0_9dbb1_8c483fcf_L.png.jpg[/IMG]
The tube of
Base Pin is put into clearance between external diameter of
Rack and internal one of
Cylinder Bore. The cogs of
Rack (D2) are put into
Base Pin and (further into)
Barrel.
Note. The
Nut's head of the
Bolt push the bit of
Pawl. The
Pawl is turned clockwise. The
Spring of
Pawl is tensed.
[IMG]http://img-fotki.yandex****/get/6439/58365765.c/0_9dbb2_57927d5a_L.png.jpg[/IMG]
The Cylinder and
Barrel assembly is completed.
Note 1. The bit of
Pawl is put in groove of
Nut. The
Pawl is return in its right place.
Note 2. The right hand of
Cylinder Catch is down. The
Cylinder Catch holds the
Cylinder. (The right hand of
Cylinder Catch is down under effect of
Barrel Catch, which I don't examine there.)
[IMG]http://img-fotki.yandex****/get/6430/58365765.c/0_9dbb3_8def4fd2_L.png.jpg[/IMG]
Let's see how work the
Extractor.
Let's put the fired round into
Cartridge Chamber.
[IMG]http://img-fotki.yandex****/get/5645/58365765.c/0_9dbb4_858add16_L.png.jpg[/IMG]
Let's push the
Rack to the right.
There are unmoving parts. They are:
Barrel, Pawl, Cylinder Catch, Cylinder, Base Pin, Bolt and
Gas Ring.
There are moving parts. They are:
Rack, Extractor, Spring and
Round.
[IMG]http://img-fotki.yandex****/get/4138/58365765.c/0_9dbb5_feab8989_L.png.jpg[/IMG]
Let's push the
Rack to the right more.
The
Spring is tensed. The
Rack and the
Extractor are in maximum right position. The
Extractor extract the
Round out
Cartridge Camber.
[IMG]http://img-fotki.yandex****/get/5629/58365765.c/0_9dbb6_6c0f6e80_L.png.jpg[/IMG]
The
Round is falling down.
[IMG]http://img-fotki.yandex****/get/4124/58365765.c/0_9dbb7_548bc493_L.png.jpg[/IMG]
Let's assemble
Pivot.
It needs four details some more: (1)
Frame, (2)
Gear, (3)
Joint Pivot and (4)
Screw.
[IMG]http://img-fotki.yandex****/get/6435/58365765.c/0_9dbb8_c07e058c_L.png.jpg[/IMG]
Let's put these four details in its right place.
Note. The right hand of
Cylinder Catch is up. The
Cylinder is hold now (in this position) with
Frame.
Let's take the
Pawl-2. It is the assembly, which includes: (1)
Pawl itself, (2)
Spring and (3)
Pin (Rivet).
[IMG]http://img-fotki.yandex****/get/5638/58365765.c/0_9dbb9_787eba5b_L.png.jpg[/IMG]
Let's put the
Pawl-2 in its right place.
The assembly of
Extracting Mechanism is completed.
[IMG]http://img-fotki.yandex****/get/5633/58365765.c/0_9dbba_baea29d2_L.png.jpg[/IMG]
Thank you for attention.
Author = sasha1648.
P.S. And finish drawing.
[IMG]http://img-fotki.yandex****/get/5629/58365765.c/0_9e7d6_1dd7be3c_L.png.jpg[/IMG]