the star wheel in the feed. After placing the fire regulator on Safe, the handle is pulled smartly to the rear lour limes and released. The compressed driving spring, in returning the mechanism to battery the required number of times, performs the cycle of feeding first by taking the cartridge j D j O ~
out ol the link in the feed belt and then by chambering it.
The piece is fired by a trigger located at the upper forward part of the pistol type handle. While the powder charge is building up its peak pressure, the bolt is securely locked to the barrel and barrel extension and recoil begins. In less than an inch of rearward travel, the accelerator lexer starts to pivot about the pin.
This rotation moves the roller in the accelerator cam groove of the locking angle and starts o o o the accelerator cam turning rearward. The roller, which is attached to the bolt and rides in the accelerator cam groove, whips the bolt back at high speed, driving this part during recoil at a ratio of four to one.
In order to relieve the shock on the mechanism and prevent rupture of cartridge cases, the weapon is so designed that not until well alter the chamber pressure has passed its peak does the breech loc k begin to open. Then the recoil movement is utilized to loosen gradualIv the empty cartridge case in the chamber before sudden extraction takes plac e. The case is ejec ted in the most peculiar fashion ever used by a mac hine gun. It is wiped from the lace of the boh and pushed through an opening on the upper right side of the receiver and on the same side from which it is fed.
After unlocking, the bolt assembly, consisting of the bolt, striker, striker spring, extractor, and two sears, recoils as a unit, and during this movement the .striker is compressed against its spring and the weapon cocked. This is brought about as the accelerator cam engages the rear of the striker. When fully retracted, the sears drop into their notches.
The gun is front scared and the accelerator lever limes the ielea.se point for the striker during full automatic: fire. It will continue to operate as long as the trigger mechanism is actu-
To convert the weapon for operation by hand, the selector on top of the cover is moved from
Ncrdenfelt Machine Gun, Model 1097, with Mount Folded for Carrying.
Automatic, if) Manual and ilie large crank on the right side is rotated in a counterclockwise direction. An eccentric on the crank cycles the barrel
and barrel extension which in turn throws the bolt rearward.
By continued rotation the lugs on the operating crank shove the bolt into battery and chamber the incoming round at the same time. The lug then comes into position behind the bolt.
I bis securely locks the mechanism so that the i whole assembly will not recoil as in automatic fire. When this position is reached, the handle cams in the manual sear that protrudes through the right rear side of the receiver and the cartridge is fired. The operation will be repeated as long as the < rank is rotated.
The ammunition is loaded 200 rounds to a belt and is fed from right to left. The feed mechanism consists of a star wheel with six divisions or spaces. When feeding during automatic fire, the recoil of the barrel extension actuates a projection on the feeder to the rear. This piece is engaged in a helical cam and the movement of the lug causes the cam to rotate one-sixth space counterclockwise, and winds a torque spring fastened to the star wheel shaft.
When the lug has made full movement, an escapement allows the stored energy in the spring to index the feeder. A ratchet arrangement then releases the barrel extension and permits the assembly to return to battery.
The belt enters the right side near the top of the receiver. If the weapon is to be fired manually and the force of the barrel return spring is not utilized to help load the weapon, as is done when it is set for automatic fire, the crank handle must be rotated four complete revolutions to index the belt over the feeder and put the first round in the chamber.
One of the many peculiarities of the weapon is that if set on automatic fire and the trigger is actuated before the crank handle has been secured in its rest position, the latter will on the first shot rotate to its proper place and remain motionless throughout the remainder of the burst.
A barrel-return spring of the Maxim type, located underneath the front part of the receiver, can be adjusted to give any desired pressure by the adjustment of a winged nut.
The most notable feature of the feed system
is that in 1807 the gun employed a push-out type of metallic link that is practically identical with ones used today.
Thorsten Nordenfelt was of the school that did not believe the automatic weapon was here to stay. Having long built and promoted the sale of manually operated multibarreled guns that enjoyed a fair amount of popularity throughout the world, he had little confidence in self loading weapons. This was his first and last attempt to enter a field strange to him and towards which he was bitter and hostile.
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