Spirit-level for horizontal setting of hand drill - comprises block with shallow V=groove held by clasp spring around cylindrical portion of tool body
The available invention covers a spirit level perpendicularly to taking up at a cylindric part exhibiting or waagreeht Gegenstãnde which can be aligned, in particular hand drills. There is already spirit levels for taking up at hand drills well-known. For example is in the USA 4,402,141 a such spirit level besehrieben. This spirit level has however the disadvantage that it fits only to particularly co-ordinated drill presses and is firmly connected by a screwed joint the spirit level. From the FRA 2,491,795 a drill press is well-known, which possesses inserted spirit levels, so that the machine can be aligned wãhrend the Arbeítsvorgang exactly horizontal or vertically. There is therefore a need after a spirit level, which are installed problem-free to each conventional drill press or at other tools or Gegenstãnde kann.
This task is solved by the spirit level defined in the patent claim 1. o the subject of the available invention is therefore the spirit level defined in the patent claim 1. The spirit level can for different purposes used werden.
Preferably it serves for putting on on the housing front part of hand drills. By the put on Was6s serwaage knows an exactly horizontal or an exactly perpendicular hole in easy way bored werden.
Fig. 1 in perspective representation a erfindungsgemãsse spirit level, including the tension spring and Fig. 2 in perspective representation the front part of a hand drill with put on spirit level on the cylindric Gehäuseteil.
In Fig. 1 is evident a erfindungsgemãsse spirit level, to their main part of the Kunststoffbloek 1 ist.
On the lower surface this block possesses two lying close surfaces 2 and 3, which form a gutter. This gutter serves a drill press for the creation to the cylindric front part. Thus an accurate adjustment is possible. For pressing the tension spring serves 4, which can be hung up into the holes 5 of the mounting flanges 6. Alternatively hooks can be arranged in place of the holes in the mounting flange, which can be eingehãngt into holes of a rubber band, which sets in place of the tension spring 4 einge become can. In the block I are the flat drillings 7, where the leveling indicators 8 are assigned. It is evident that the spirit level 8 on the opposite side of the gutter is arranged and serves for the horizontal adjustment of the spirit level. The spirit level 9 however is located on ss the face of the block I and serves for the vertical Ausriehtung of the Wasserwaage.
Fig. the spirit level according to invention put on on the housing front part of a drill press shows 2. It is evident that 3 gutter on the cylindric part of 10 of the BohrmasehinenGehäusevorderteils, formed from the lying close surfaces 2 and, lies close. The spirit level is pressed by the tension spring 4 against the cylindrical part I 0. Thus kartn during the operation of the drill press the exactly vertical and/or exactly horizontal drilling direction to be constantly controlled. If the cylindrical part is narrower 10 of the Gehãusevorderteils, the tension spring can do 4 into another hole 5 in the mounting flange 6 eingehãngt werden.
8 I sheet designs 674,417 1 sheet A small cubical block has a recess defined between two plane surfaces inclined to each other (2, 3) at an angle between 100 and 135 deg. forming a broad V-groove for seating on the cylindrical part (10) of the drill behind its chuck. The block is retained in position on the cylindrical part (10) by a coil spring (4) whose ends are hooked into holes (5) in narrow flanges at either side of the block. The level indicator (8) is recessed into the top of the block. Another indicator (9) is recessed into the back of the block, performing a similar function when a vertical instead of a horizontal hole is to be drilled. ADVANTAGE - Device can be fitted easily to any tool having cylindrical mounting surface.
