Mechanical guns and projectors – Spring – Bow
Patent
1987-04-01
1989-05-09
Pinkham, Richard C.
Mechanical guns and projectors
Spring
Bow
F41B 500
Patent
active
048278947
DESCRIPTION:
BRIEF SUMMARY
The invention relates to a crossbow consisting of a support adjacent to a shoulder stock, receiving the arrow guide, a support on which is provided a leverlike actuatable drawing device able to act on a string of the bow drawably anchored on the support a string connected to the shooting slide, a drawing device exhibiting a pusher able to move the shooting slide against a trigger device.
Such a crossbow is known, for example, from Swiss Pat. No. 384,409. Drawing of such a heavy-duty crossbow requires considerable force, for which reason specially provided drawing devices are used. Pins projecting in an aligned manner, on which a fork of a drawing device designed leverlike can be placed, are provided, i.a., on both sides of the crossbow. A pusher, pivoted on the yoke of the fork, acts on the shooting slide connected to the string, when the draw lever is actuated, and makes the shooting slide ready for shooting through locking by the trigger device.
Use of this drawing device represents a clumsy manipulablity during operation of this weapon provided for this purpose and does not prove reliable in all cases. Consequently, the constant preparation and storage of such a drawing device is complicated and impairs the shooting operation.
Further, from EP-A-0041206 a crossbow is known in which drawing of the bow can be brought about by three-part lever system provided above the support and arrow guide.
By means of a pusher engaging on pins of the shooting slide projecting laterally from the slide guide the shooting slide can be pushed all the way to the trigger device and be engaged. The shot in a bore, i.e., accelerated from a path is not hindered during shooting by the drawing device, but the bulkiness of the lever system used here too requires a removal of the drawing device from the crossbow. Moreover, with the alternately possible shooting of arrows from a groove on the upper side of a guide a hindrance by the drawing device is hardly avoidable.
In a crossbow according to published prior art Swiss Pat. Nos. 43,791 and 44,542 a drawing device is provided, which exhibits a drawing bow placed on the underside of the support of the crossbow actuatable by a rotating movement, a bow that is rotatably connected to a pusher that can move the shooting slide into shooting position. This drawing device can not be sunk into the support of the crossbow and can be attached only on the underside of the weapon. The necessary large spatial requirement for the drawing mechanism weakens the stability of the support of the crossbow or imposes a larger support cross section and as a result impairs the accuracy of the weapon.
FR-A-2,373,772 calls attention to a crossbow, whose support and stock are connected rotatably on the under side around a horizontal axis. The drawing of the bow occurs by a downwardly directed movement of the stock or support, whereby on the front upper end on both sides of the stock drawing rods are provided which exhibit a driving pin that can be connected to the shooting slide during drawing of the bow.
Because of its relatively short lever arm, this leverlike actuation device requires great effort in the drawing process. Because of the rotatability between stock and support, the stability of the crossbow affecting the shooting accuracy is unfavorably affected.
A crossbow made according to U.S. No. 3,670,711 has a drawing device, in which the draw lever is placed rotatably on the underside on the front end of the stock and exhibits withdrawal rods, running on each side of the support, connecting the shooting slide with the draw lever.
This drawing device, fastened outside the crossbow, because of the additional weight, especially during preparing to shoot, produces a load excessively tiring to the marksman.
Starting from the above criticized insufficiencies and the designs of the prior art badly in need of improvement, the inventor has had the object of providing a crossbow according to the initially described type with a drawing device, which forms an integral component of the crossbow, makes possible a fa
REFERENCES:
patent: 3509863 (1970-05-01), Barker
patent: 3670711 (1972-06-01), Firestone
patent: 3783852 (1974-01-01), Shepherd
patent: 4388914 (1983-06-01), Cesin
patent: 4594994 (1986-06-01), Williams
Jackson Gary
Jaskiewicz Edmund M.
Pinkham Richard C.
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