Cross bows

• US 4,593,675 A
• Filed: 09/28/1983
• Issued: 06/10/1986
• Est. Priority Date: 09/28/1983
• Status: Expired due to Fees

• Current Assignee: Shimon Waiser
• Original Assignee: Shimon Waiser
• Inventors: Waiser, Shimon
• Primary Examiner(s): Apley, Richard J.
• Assistant Examiner(s): Bahr, Robert
• Application Number:
  US06/536,545
• Time in Patent Office: 986 Days
• Field of Search: 124/25, 124/27, 124/83, 124/35 R, 124/35 A, 124/41 R, 124/41 A, 124/20 R, 124/16, 124/23 R, 124/24 R, 124/21, 124/20 B, 124/22, 124/20 A
• US Class Current: 124/25
• CPC Class Codes: F41B 5/12 Crossbows

Abstract

A cross bow comprises a bow attached to a bow slide which performs reciprocating motion relatively to a cross bow stock when the cross bow is being cocked. The slide can be maintained in a selected position along the stock by a locking device. To fire projectiles a projectile holder is attached to a bow string. The stock has a longitudinal guideway for guiding the bow slide. The locking device includes a ratchet gear wheel and a spring loaded pawl. A cocking device is provided and includes a gear wheel and a gear rack.

Claims

1. In a cross bow comprising a stock, a bow and a bow string, the improvement including:

(a) a movable bow slide to which said bow is attached, said bow slide being attached to said stock in such a manner that it performs reciprocating motion relatively to said stock when said cross bow is being cocked;

(b) slide locking means fixing said slide in different determined positions relatively to said stock;

(c) a projectile holder which is attachable to said bow string, said holder having a recess for containing a projectile;

(d) a releasable catch for holding said bow string and said projectile holder in a cocked position;

(e) trigger means operatively associated with said catch for effecting release of said bow string and said projectile holder therefrom;

(f) said stock having at least one longitudinally extended guideway conforming to the shape of said bow slide for guiding of said bow slide during its movement;

(g) said stock further having longitudinally extended guide surface conforming to the shape of said projectile holder for guiding of said projectile holder during its movement.

2. A cross bow according to claim 1, further including cocking means to move said bow slide with said bow attached to it relatively to said stock.

3. A cross bow as claimed in claim 2 in which said cocking means include a gear wheel and a gear rack.

4. A cross bow as claimed in claim 2 in which said cocking means include a hydraulic drive having at least one hydraulic cylinder, one ram, one hydraulic valve and one pumping lever.

5. A cross bow as claimed in claim 2 in which said cocking means include a lever pivoted at said stock and at least one cocking member-link one end of which is pivotally attached to said lever and another end of which is pivotally attached to said bow slide.

6. A cross bow as claimed in claim 2 in which said stock includes an elongated fore end portion and a butt pivotally attached to the latter, said cocking means including said butt and at least one cocking member-link one end of which is pivotally attached to said butt and another end of which is pivotally attached to said bow slide.

7. A cross bow as claimed in claim 1 in which said slide locking means include a ratchet gear wheel and a spring loaded pawl.

8. A cross bow as claimed in claim 1 in which said catch conceals said recess of said projectile holder to prevent spontaneous falling out of a projectile before a shot when said cross bow is cocked.

9. A cross bow as claimed in claim 1 in which said recess of said projectile holder has a surface in its rear part which centres a ball-shaped projectile during a shot.

10. In a cross bow comprising a stock, a bow and a bow string, the improvement including:

(a) movable bow slide means to which said bow is attached, said bow slide means being attached to the stock in such a manner that it permits longitudinal motion relative to said stock for changing of a bow tension;

(b) slide locking means fixing said slide means in different longitudinal positions relative to the stock;

(c) said stock having at least one longitudinally extended guideway conforming to the shape of said bow slide means for guiding of said slide means during its movement;

(d) cocking means to move said bow slide means with said bow attached to it relatively to said stock;

(e) said cocking means include a gear wheel and a gear rack.

11. In a cross bow comprising a stock, a bow and a bow string, the improvement including:

(a) movable bow slide means to which said bow is attached, said bow slide means being attached to the stock in such a manner that it permits longitudinal motion of said slide means relative to said stock for changing of a bow tension;

(b) slide locking means fixing said slide means in different longitudinal positions relative to the stock;

(c) said stock having at least one longitudinally extended guideway conforming to the shape of said bow slide means for guiding of said slide means during its movement;

(d) said slide locking means include a ratchet gear wheel and a spring loaded pawl.