Abstract

Provided is a knife facilitating haft replacement to suit a person's preference and purpose of use. On the front side of a tang 3 extending in the front-rear direction, a protrusion portion 7 capable of biting into a haft 50 made of, for example, a wooden rod such as a tree branch is provided so as to be separated from the tang 3 and protrude to the rear side of the tang 3. A first receiving portion 8 receiving the haft 50 with the protrusion portion 7 biting into the haft 50 is provided on the rear side of the tang 3. The end surface of one end portion of the haft 50 is bitten by being pushed in from the protruding end side of the protrusion portion 7 toward the front side of the tang 3. With the protrusion portion 7 biting into the haft 50, the other end portion side of the haft 50 extending to the rear side of the tang 3 is received by the first receiving portion 8. As a result, the haft 50 is attached to a knife 1. As a result, a structure for connecting the tang to the haft 50 is unnecessary and a person can easily replace the haft 50 to suit his or her preference and purpose of use.

IPC Classes  ?

• B26B 5/00 - Hand knives with one or more detachable blades
• B26B 1/02 - Hand knives with adjustable bladePocket knives with pivoted blade

Abstract

Provided is a knife with a haft easily changed with another according to a user's preference and the purpose of use.　The front side of a tang 3 extends longitudinally and has a projecting portion 7 that is separated from the tang 3 and projects toward the rear side of the tang 3 so as to be fit into a haft 50 formed from, for example, a wooden bar such as a tree branch. A first receiving portion 8 for receiving the haft 50 fitted to the projecting portion 7 is provided on the rear side of the tang 3. The end face of one end of the haft 50 is fit inward while being pressed from the projecting end side of the projecting portion 7 toward the front side of the tang 3, and the other end of the haft 50 fitted to the projecting portion 7 extends to the rear side of the tang 3 and is received by the first receiving portion 8 so that the haft 50 is attached to a knife 1. This eliminates the need for a structure for connecting the tang to the haft 50, thereby facilitating changing of the haft 50 according to a user's preference and the purpose of use.

IPC Classes  ?

• B26B 1/02 - Hand knives with adjustable bladePocket knives with pivoted blade
• B26B 3/00 - Hand knives with fixed blades

Abstract

[Problem] To provide a machining cooling device that can perform cooling properly even when machining with a tool progresses deep into a workpiece. [Solution] An outlet 13 of a direction changing part 11 is provided on a front surface of a projecting part 8. This makes it possible to place the outlet 13 in the vicinity of a tool 6 supported by a tool holder 5. Placing the outlet 13 in the vicinity of and adjacent to the tool 6 supported by the tool holder 5 allows a cooling oil 7 to be injected from the outlet 13 along an outer surface of the tool 6 and in parallel therewith so as to be close enough to come in contact therewith. Thus, even when machining of a workpiece 2 with the tool 6 progresses deep into the workpiece 2, most of the cooling oil 7 injected from the outlet 13 reaches, through a gap between an internal hole 23 of the workpiece 2 and the tool 6, a machined portion located deep in the workpiece 2 and defined by the workpiece 2 and a tip of a cutting part 18 of the tool 6, without being splashed by a front surface of the workpiece 2 facing a jet orifice part 10. As a result, the machined portion defined by the workpiece 2 and the tool 6 is cooled properly by the cooling oil 7.

IPC Classes  ?

• B23B 29/12 - Special arrangements on tool holders
• B23B 31/00 - ChucksExpansion mandrelsAdaptations thereof for remote control
• B23B 47/00 - Constructional features of components specially designed for boring or drilling machinesAccessories therefor
• B23Q 11/10 - Arrangements for cooling or lubricating tools or work
• B23B 51/12 - Adapters for drills or chucksTapered sleeves

Abstract

The present invention relates to a flower pot of a double structure comprised of an inner container and an outer container. The present invention relates in particular to a flower pot of a double structure comprised of an inner container and an outer container, in which an inside container for planting a plant is designed to be transparent so that how the plant is rooted or watered is observable, and the interior of the pot is completely shielded from the light by preventing the light from entering from above and an outside container covering the pot is completely shielded from the light so that moss is suppressed from being grown on the inner surface of the pot and the plant can be grown in a most suitable environment without applying the light to the roots. The present invention relates to a flower pot of a double structure comprised of an inner container and an outer container. The present invention relates in particular to a flower pot of a double structure comprised of an inner container and an outer container, in which an inside container for planting a plant is designed to be transparent so that how the plant is rooted or watered is observable, and the interior of the pot is completely shielded from the light by preventing the light from entering from above and an outside container covering the pot is completely shielded from the light so that moss is suppressed from being grown on the inner surface of the pot and the plant can be grown in a most suitable environment without applying the light to the roots. The pot is of a double structure comprised of the inner container 11 and the outer container 21 disposed outside the inner container 11. The inner container 11 is transparent and an upper part of the inner container is shielded from the light and the outer container 21 is colored in a completely lightproof color or formed of a completely lightproof material.

IPC Classes  ?

• A01G 9/02 - Receptacles, e.g. flower-pots or boxes Glasses for cultivating flowers