Repeating crossbow plans.pdf

CROSSBOW

By Austin H. Phelps

HIS REPEATING CROSSBOW has all the

handling characteristics of a fine repeating

rifle of the slide-action type. In the hands of an

experienced crossbowman it will deliver five

shots in five seconds with near-rifle accuracy

over ranges up to 40 yards. The steel-pointed

arrows, or quarrels, as they are correctly called,

are loaded from the top into a magazine just as

are the cartridges in a bolt-action rifle. After

loading, the bow is cocked by a slide, and the

quarrel is fired by pressing a trigger which re-

leases the bowstring. Nocking of the five quar-

rels in the magazine is done automatically by

the repeating mechanism as shown in the lower

detail in Fig. 3. The two-piece barrel, Figs. 1 and

2, has a square bore, the groove being cut to full

REPEATING

An assembly view of the two-piece barrel showing the pump

slide, brass runners, and the top barrel in position. Stock should

be handmade to specifications that fit individual user in the same

way as a rifle or shotgun stock. Use hardwood for all parts

depth in both halves. Then parts

of both halves are cut away so that

when assembled there will be an

offset slot for the bowstring as in

the lower detail in Fig. 2. Brass

runners, fitted with 3½-in. brass

strips soldered edgewise to them,

are screwed to the lower barrel as

in the center left-hand detail in

Fig. 2. Care must be taken to space

the runner strips so that the inner

edges are exactly flush with the

inner edges of the magazine liners.

After making a trial assembly, it

may be necessary to file the slant-

ing ends of the 3½-in. strips or the

underside of the upper barrel to

permit free passage of the bow-

string through the offset slot. The

purpose of the offset in the slot is

to force the bowstring upward suf-

ficiently to release it from the

notch in the quarrel, permitting

the latter to enter the bore in free

flight.

In making the stock, it's a good

idea to copy a rifle or shotgun

stock that fits you and has a grip

and tang shaped to your liking.

Bandsaw the wood to the rough

outline of the stock selected, then

finish to contour with wood rasps

and sandpaper. Care must be used

in cutting and finishing the maga-

zine slot in the stock, as the maga-

zine liners must be spaced accu-

rately so that the quarrels drop

freely into firing position, Fig. 3.

The inner rear corners of the lin-

ers are rounded to a smooth curve.

To assure free movement of the

quarrel in firing position, it may

also be necessary to round the in-

ner corners of the brass runners.

The pump slide, Fig. 2, engages the

bowstring as in Fig. 1 when in

the forward position. Overhanging

brass strips, which are screwed to

the guide blocks, Fig. 2, ride on the

brass runners. In cocking, the

slide is drawn back as far as it will

go and the forward end is pulled

Above, this repeating crossbow is loaded just like a bolt-action

rifle, five quarrels being placed in the box magazine at one

loading. Below, note the trim lines of the finished job. If de-

sired, you can install either open or peep sights on the barrel

166

POPULAR MECHANICS

NUT EMBEDDED

IN WOOD

15°

2½"

BOW

1¾"

WEDGE

¼"

DETAIL A

Bow PLATE

BUTT HINGE

WALNUT STOCK

7¼"

1½"

½"

METAL CLAMP

STEEL POINT

DRLLED FOR

TENON ON SHAFT

sQ.

LEMONWOOD, HICKORY OR YEW BOW

COVER, 3/8" X 1 X 9"

ROUNDED CORNERS

MAGAZINE LINERS,

¼ x 1½ x 5"'

2½"

TOP BARREL

TRIGGER GUARD,

3/8 x 1" x 5"

1" SQ.

RUNNERS.

1/8" BRASS

5/8"

10¼

1/8"

LOWER BARREL

3½"

3/8"

13½"

18"'

4½"

7½

¾"

1½"

2½

BRASS PUMP SLIDE

¼"

½"

14½"

1/8"

3/8"

3½"'

3¼

4½"

13½

5".

18"

Plik z chomika:

Inne pliki z tego folderu:

Inne foldery tego chomika: