Other

Hewlett-packard Development Company, L.p.

Jeffrey Howard Gent

Erick Blane Kinas

Teresa Bellinger

A gauge with two probes measures a rifle chamber to determine the distance from the center of the shoulder to the start of the bore. A gauge with two holes measures a loaded cartridge to determine the distance from the center of the shoulder to the place on the bullet where the cross sectional diameter is the same as the bore of the rifle. The difference between these two measurements is bullet jump: the distance the bullet will move, upon firing, before it engages the rifling of the barrel. These same tools, properly sized, also provide a unique and convenient means for determining the cone angle of any conical surface.

Cartridge and chamber gauges

A bullet seating die for assembling shoulder breeching rifle cartridges that aligns the bullet co-axial with the case shoulder. Bullet seating depth is set relative to the datum line of the case shoulder and is adjustable. Shoulder breeching rifle cartridges use the shoulder, exclusively, to position the cartridge in the chamber. Therefore, cartridges assembled with this die will position the bullet concentric with the bore of the barrel and at a set distance from the bore with greater precision and consistency than cartridges produced by die of previous designs.

Bullet seating die for shoulder breeching rifle cartridges

A tube with a conical mouth slides over the neck of an ammunition cartridge and is pressed against the shoulder to align the case. A neck reamer translates and rotates within the tube, the tip being inserted into the neck. Both mouth and tip are replaceable, come in different sizes, and come with smooth or abrading surfaces. The tip and the mouth are coaxial. The mouth perfects the shoulder surface and the tip perfects the neck interior. This results in a cartridge case having a neck with an interior wall that is a perfect cylinder that is coaxial with the perfected exterior of the conical shoulder.

Case hone

A neck sizing die for shoulder breeching ammunition cartridge cases that uses the shoulder to align the case, not the body. Alignment occurs before resizing. Resizing is done in a two-step process: a bushing is used to shrink the neck diameter and then an expansion button is used to increase it. Bushing and button diameters are highly selectable and easily changed. Cone-and-cup interfaces ensure concentricity of the case shoulder to the bushing or button. The unique alignment technique and two-step sizing method produces a case with a neck having an interior diameter of the user's choice with the interior wall of the neck aligned to the shoulder. This results in a case that will more reliably position the bullet concentric with the bore of the barrel than existing tools and methods.

Necking sizing die for shoulder breeching rifle cartridges

A print cartridge temperature control apparatus and method are disclosed. In one embodiment, ink passes from a first chamber, across a printhead, and to a second chamber to control the temperature of the printhead.

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Brownsville, OR, United States of America

Jeffrey Howard Gent