Falling Block Rifle Plans

Falling Block Rifle Plans

Fig. 2-7 FRONT VIEW OF THE FINISHED RECEIVER

Fig. 2-6 REAR VIEW OF THE FINISHED RECEIVER

Fig. 2-7 FRONT VIEW OF THE FINISHED RECEIVER

CROSS SECTION OF CLOSED ACTION Mid-sectional view of the right side of the entire action, with every part sectioned except the hammer parts. This view shows the action closed, hammer cocked and sear/safety in SAFE position.

Rifle Plans

Fig. 2-9 TOP CROSS SECTION VIEW AT BORE LINE

Top sectional view of the closed action, sectioned at the bore line. This view shows the hammer and firing pin details.

Fig. 2-9 TOP CROSS SECTION VIEW AT BORE LINE

Top sectional view of the closed action, sectioned at the bore line. This view shows the hammer and firing pin details.

Falling Block Action Blueprints

REAR CROSS SECTION OF SEAR/SAFETY AREA (SAFE POSITION)

Rear sectional view of the closed action, sectioned through the area of the sear/safety. This view shows the action cocked and the sear/safety in the SAFE position. Note the position of the hammer, hold-down and sear/safety as compared to the position of these same parts in the following drawings.

REAR CROSS SECTION OF SEAR/SAFETY AREA (SAFE POSITION)

Rear sectional view of the closed action, sectioned through the area of the sear/safety. This view shows the action cocked and the sear/safety in the SAFE position. Note the position of the hammer, hold-down and sear/safety as compared to the position of these same parts in the following drawings.

SIDE CROSS SECTION OF SEAR/SAFETY AREA (SAFE POSITION)

Sectional side view of the sear/safety» trigger and sear/safety block areas showing the sear/safety in the SAFE position, and with the finger lever base (R) partly swung down which releases the sear/safety block to engage under the sear/safety to block it from being depressed. Unless the finger lever and the action is completely closed, the cocked hammer cannot be released. Also note the space between the bottom of the sear/safety and the sear.

REAR CROSS SECTION OF SEAR/SAFETY AREA (FIRE POSITION)

Rear sectional view of the sear/safety area showing the sear/safety depressed to the READY-TO-FIRE position. When the sear/safety is depressed from the SAFE position to this position, it is stopped by the sear and this places the beveled surface of the upper end on the corner of the hammer. If the trigger is pulled the sear will move from under the sear/safety, allowing the hammer to push the sear/safety down and fall against the breech block. To understand this better, compare this drawing with Fig. 2-10.

SIDE CROSS SECTION OF SEAR/SAFETY AREA (FIRE POSITION)

Side sectional view of Fig. 2-12, showing the sear/safety in the READY-TO-FIRE POSITION. Note that the sear is directly under the sear/safety and is holding it up against the pressure of the hammer on its beveled surface. Also note the position of the trigger and sear lever—relaxed, with the sear lever adjustment screw adjusted so that there is no slack between the trigger, sear lever and sear.

Safety Blueprints EdgeTrigger Sear Hammer

CROSS SECTIONS OF SEAR/SAFETY AREA (FIRED POSITION)

End (left) and side (right) sectional views of the sear/safety area showing the sear/safety in the FIRED position after the trigger has been pulled. Note that the sear/safety has slipped below the falling hammer and its sear past the sear edge on the sear. When the trigger was pulled from the relaxed position in Fig. 2-13, the trigger via the sear lever adjustment screw pushed the sear lever up, causing it to pivot and which in turn caused the sear to pivot forward to release the sear/safety. The rear hole in the trigger is larger than the sear lever pin that goes through it, the pin thus also serves to limit the trigger movement—both the slack and over-travel. The function of the sear lever is to give the sear about twice the pivot movement as given to the trigger. The ratio can be increased if the sear lever adjustment screw is placed further to the rear.

Falling Block Rifle Plans

TOP CROSS SECTION VIEW OF THE HOLD-DOWN ASSEMBLY The hold-down is positioned toward the left as it should be when the hammer is cocked. The spring plunger is shown riding high in the notch in the hold-down, and is putting right side pressure on the hold-down so that it will move to the right when the hammer falls. The purpose of the hold-down is to hold the sear/safety down after the hammer has pushed over it and until the hammer is cocked again. The angled sliding contact surfaces between the hold-down and the plunger must be highly polished and lubricated.

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