On shooting of archery arrows, there is extreme difficulty in following the flight of an arrow, and further difficulty in finding the spent arrow. To obviate the above difficulties disclosure is made of apparatus assembly of an LED light bulb connected to a battery through a single pole switch, and the LED light bulb butting up to the bottom of the arrow nock and the assembly attached to the fletched end of an arrow and the string of the bow opening the single pole switch to "off" when the arrow is in position for shooting, and on shooting the arrow from the bow the single pole switch is in a closed, or on, position to energize the LED light bulb to give off light through the nock, and as part of the apparatus there is a nock protective cap, and a tongue inside of the protective cap, and the nock protective cap on placing over the apparatus nock and the tongue extending to the single pole switch contact opens the switch to turn to "off".

BACKGROUND OF THE INVENTION 
In archery shooting of arrows, there has long been a need for better 
tracking the flight of the arrow, and further there is a problem of 
locating the shot arrow whether aimed at a deer, or other target, or the 
spent arrow landing on the ground or underbrush. To overcome the problem 
of lost arrows, this invention is to disclose apparatus for an on-off 
lighted archery arrow, having a switch actuated by string of the archery 
bow. 
Prior art pertaining to this present invention is as follows. 
U.S. Pat. No. 5,134,552 to Call for ACCELERATION ACTIVATED ENERGIZING 
DEVICE. This patent discloses a lighted nock, and the light switch 
activated by spring action at zero acceleration of the arrow. 
U.S. Pat. No. 4,340,930 to Carissimi for LIGHT ASSEMBLY FOR ARCHERS ARROW. 
This patent discloses a manual switch movable on the body of the arrow to 
close the circuit. 
U.S. Pat. No. 5,058,900 to Denen for GENERAL PURPOSE ILLUMINATOR ASSEMBLY. 
Disclosure is made of a compressible coil capture spring for the capture 
end of the battery electrode. 
U.S. Pat. No. 4,856,792 to Hardison for ARCHERS ARROW WITH CHEMICAL LIGHT 
SOURCE. Disclosure is made of a lightstick inserted into a cavity in a 
transparent plastic arrow nock. 
U.S. Pat. No. 5,141,229 to Roundy for ACCELERATION AND DECELERATION 
ELECTRICAL SWITCH. Disclosure is made of an electrical inertia switch. 
U.S. Pat. No. 4,989,881 to Gamble for ILLUMINATED SPORTS PROJECTILE. 
Disclosure is made of a molding containing components diode, wire pair, 
and contacts and incorporated into the dart. 
None of the above prior art patents anticipate, or collectively make 
obvious the invention as described below. 
SUMMARY OF INVENTION 
This invention is to disclose apparatus for controlled on/off lighting of a 
nock of an archery arrow, when shot from a bow, which light enables the 
archer to follow the flight of the arrow, and on retrieving the arrow turn 
the light to "off" by opening the switch contacts in the nock by means of 
a nock protective cap with a tongue of the cap extending into the nock, 
single pole switch contact. 
OBJECTS OF THE INVENTION 
An object of this invention is to disclose apparatus of an assembly of a 
battery, an LED light bulb and open/closed switch contacts, and the 
battery end of the assembly mounted in the fletched end of the hollow 
arrow shaft and a transparent or translucent nock mounted over the LED 
bulb end at the end opposite of the battery of the apparatus. 
Another object of this invention is to disclose apparatus of a bow string 
actuation of on-off open or closed switch contacts in an arrow nock, 
Another object of this invention is to disclose apparatus of a bow string 
to open nock switch contacts, in an arrow nock to provide an off or open 
switch position connection of an LED bulb to battery connection on 
mounting an arrow into position, in a bow and the bow string in the arrow 
nock set for shooting the arrow. 
Another object of this invention is to disclose apparatus of a closed 
switch mounted on the nock of an arrow and on positioning a bow string in 
the nock on mounting the arrow in the bow, opens the closed switch to off 
the LED light bulb is not energized. 
Another object of this invention is to disclose apparatus of a closed 
switch mounted on the nock of an arrow, and on positioning a bow string in 
the nock on mounting the arrow in the bow opens the closed switch to the 
LED bulb, and on shooting the arrow, the bow string is released from the 
nock and the switch in the nock is closed to energize and light the LED 
bulb. 
Another object of this invention is to disclose apparatus of a plunger on a 
micro switch and an LED light bulb mounted on the plunger of the micro 
switch and the micro switch is in the closed or "on" position as mounted 
on the fletched end of a hollow arrow shaft and the micro switch is in the 
open or "off" position on mounting the arrow in the bow, with the bow 
string in the nock, and pushing the plunger down into the micro switch to 
the "off" or open switch position. 
A further object is to disclose apparatus for controlled lighting of an 
archery arrow nock of wherein the assembly of the LED light bulb, and 
closed single pole switch contact mounted in the nock and the battery 
connected to the single pole switch and to the LED light bulb and the LED 
light bulb of said assembly butting up to the base of the nock and, a nock 
protective cap placed over the nock and, a tongue in the nock protective 
cap extending into the nock to separate the contact of the single pole 
switch to open said switch, to thus de-energize the LED light bulb, when 
the arrow is not mounted in the bow. 
In the description of this invention the words "closed switch" is to 
indicate the circuit is energized to the LED light bulb. "Open switch" is 
to indicate the circuit is not energized to the LED light bulb.

DETAILED DESCRIPTION OF THE INVENTION 
Having a lighted nock in an arrow in flight the shooter can better follow 
the trajectory and the landing of the arrow. 
Referring now to FIG. 1, there is shown a lighted nock and LED assembly 8, 
attached to the tail end or fletching 12 end of tubular metal arrow shaft 
9. The single pole switch contacts 3", 3'" attached to the nock slot 5 of 
nock 7 close the single pole switch to provide power from battery 1 to 
energize the LED light bulb 2 to an "on" position to give light to the 
nock 7. The LED light bulb 2 is positioned to abut the bottom of the nock 
7, and nock 7 is of transparent or translucent material preferably of 
plastic or glass and this may be of any color such as red, orange, yellow, 
or any other color desired. In this FIG. 1, the bow string 6 is shown 
merely to show the relationship to the nock 7 and single pole switch 
contacts 3", 3'" attached to electric contact leads 3, 3' in closed switch 
position. The nock assembly shoulder 4, limits the depth of immersion of 
the battery holder/pocket 17 into the fletched end of the tubular metal 
shaft 9 of arrow 20 or into the ferrule 16. 
FIG. 2 shows bow string 6 in position to open the circuit by separating 
single pole switch contacts 3", 3'" thus there is no energizing of the LED 
bulb 2 when the bow string is placed in position in the nock slot 5 of 
nock 7 in readiness to shoot the arrow. 
Reference is made to FIG. 11 to better show the relationship of the nock 
and LED assembly 8, and the fitting of this assembly 8 to the arrow shaft 
9 on the end opposite the arrow head 13. 
FIG. 5 shows expanded view of single pole switch contacts 3", 3'" and the 
arrow string 6 in nock slot 5 of nock 7, set for release of the arrow 20 
from the bow. Bow string 6, is shown bottomed in the nock slot 5 of nock 7 
and separating single pole switch contacts 3"-3'" each from the other to 
have an "open" switch, and the LED light bulb 2, is not energized. 
FIG. 5A shows expanded view of single pole switch contacts 3"-3'" in closed 
switch position after release of arrow 20 from a bow, with the contacts 
3"-3'" each in contact with each other, as a closed switch. 
It is to be pointed out that the single pole switch contacts 3"-3'" are of 
a spring type metal preferably stainless steel and are always in closed 
switch position unless separated by a bow string or other non-conductors 
of electricity, such as plastic of tongue 15 in a nock protective cap 14, 
placed over nock 7. 
FIGS. 6, and 7 are end views of the nock slots of FIGS. 5A and 5 
respectively. 
To insure that the battery energy is not spent when the arrows of this 
invention are not mounted in the bow, a nock protective cap 14, with a 
tongue 15 on the inside of the cap is mounted over the nock 7 and the 
tongue 15 in the nock protective cap 14 extends into the nock slot 5 to 
open the circuit by separating the single pole switch contacts 3", 3'" to 
then have an open switch. 
This nock protecting cap 14 with tongue 15 pushes plunger of microswitch 11 
down into microswitch 10 to "open" or "off" position when placed over the 
nock slot 5 of the nock-micro switch-LED assembly 8'. 
FIG. 9 is open end view of nock protective open switch cap 14, showing 
tongue 15 in nock protective cap. 
The nock and LED bulb assembly 8, is shown in FIG. 13 and shows nock 7 
abutting LED bulb 2, and battery 1 in battery holder 17, and a compression 
bottom spring 19 in the bottom of battery holder 17 supporting the battery 
1, and a top coil spring 18 for the battery 1 and this spring 18 to be 
concentric to but not touching the positive (+) pin of battery 1, but this 
spring 18 contacts the negative (-) wall of battery 1, and electric 
contact lead 3' connects to spring 18 (-) and positive (+) pin of battery 
1, connects to one contact of the LED bulb and contact lead 3 connects to 
another contact of the LED bulb and the leads 3, 3' extend to single pole 
switch contacts 3' and 3'" in nock slot 5 of nock 7, thus forming a single 
pole switch, and on contact of switch contacts 3" and 3'" to each other 
the switch is closed means the LED bulb 2 will be energized to give off a 
light, which shows through the transparent nock 7. 
As an alternative to on-off switch contacts 3", 3'", reference is now made 
to FIGS. 3, 3A, to show a micro-switch 10, and battery 1 mounted under the 
nock 7, and a plunger 11 with LED light bulb 2 mounted on the outer end of 
the plunger 11, and this plunger 11 extends into micro-switch 10, and this 
assembly 8' mounted in the fletched end 12 of tubular metal arrow shaft 9, 
of arrow 20. Micro-switch 10 is always in the closed position with the 
plunger 11 of micro-switch 10 in full "out" extended position, to energize 
the LED light bulb 2, and on placing an arrow 20 in the archery bow, the 
bow string 6 in the nock slot 5 pushes plunger 11 into the "off" or open 
switch position, and on shooting the arrow 20 the switch is in "closed" 
position to energize the LED light bulb 2. 
FIG. 4, is a magnified side elevation view of nock-micro-switch-LED 
assembly. 
FIG. 5, 5A is a magnified side elevation view of the nock and LED assembly 
isolated from the mounting in the arrow. 
Nock and LED assembly 8, and nock-micro switch-LED assembly 8' can be 
fitted into a tubular metal arrow shaft 9, as discussed above and shown in 
FIG. 11, which shows assembly of on-off lighted nock apparatus attached to 
hollow arrow shaft, and FIG. 10 shows ferrule 16 for joining on-off 
lighted nock segment of 8 or 8' to solid shaft arrow, and is further 
illustrated in FIG. 15, and further nock and LED assembly 8 or 8' can be 
attached to a tubular metal arrow shaft 9 by use of the ferrule 16 
mentioned above. 
FIGS. 12 shows assembly of on-off lighted nock apparatus and FIG. 13 shows 
enlarged side view of on-off lighted nock assembly, which is an expanded 
view of the components. 
In all of the above discussion the LED light bulb type can be identified as 
equal to or similar to HLMP 8100 supplied by Hewlett Packard Co. The 
battery type can be a Panasonic lithium 3.0 V., type BR435. 
The nocks 7, discussed above may be molded of transparent or translucent 
plastic material or compound such as polyethylene, nylon, polycarbonate, 
polypropylene or glass as an alternative material. 
The apparatus for controlled lighting of an archery arrow nock also 
includes an assembly 8 of said LED light bulb 2, single pole switch 
contact 3" and 3'", mounted in the nock 7, and a battery 1 connected to a 
contact 3" of the single pole switch, and to the LED light bulb 2 and, a 
ferrule 16 joining the assembly 8 to fletched end of shaft 9 or 9', of 
arrow 20. 
As an alternate to the above, the nock-microswitch-LED-assembly 8' can be 
joined to the fletched end of shaft 9 or 9' of arrow 20 by means of a 
ferrule 16. 
The word "fletched" is a derivative of the word "fletch" or "fletching" 
pertaining to feathers on shaft of an arrow. 
To better illustrate the invention, reference is made to FIG. 16 showing 
the schematic of the electric circuit, showing the bow string 6 withdrawn 
from the nock 7, and single pole switch leads 3" and 3'" in closed 
position in arrow nock slot 5, and battery 1 positive pole (+) connected 
to one single pole 3'" contact of single pole switch, and negative pole 
(-) of battery 1 connected to one of two contacts of the LED light bulb 2, 
and the remaining contact of the LED light bulb 2 connected to single pole 
3" of the switch. 
FIG. 17 is a schematic of electric circuit, showing bow string 6 in 
position to open, to "off" the switch 3" 3'" in the nock slot 5 of nock 7 
de-energize the LED light bulb 2. The other components of the circuit are 
as described above for FIG. 16. 
The switch contacts 3" and 3'" are always in contact in "closed" switch 
position except when in "open" position when the bow string 6 separates 
the switch contacts on mounting arrow 20 in the bow. The switch contacts 
3" and 3'" can be set in open position independently of the bow by 
insertion of electrically insulating material in the nock slot 5, of nock 
7, however it is preferable to place the nock protective cap 14 over the 
nock 7, and tongue 15 in nock protective cap extends into nock slot 5, to 
separate contacts 3" and 3'" to "open" switch position. 
The nock protective cap 14, and tongue 15 in nock protective cap to be of 
transparent or translucent material, colorless or colored, preferably 
molded of plastic material, as shown above for the nock 7.