DE2904714A1 - Hand circular saw base plate - has widened blade cut=out for cutting two groove walls simultaneously - Google Patents

Abstract

The cut out for the saw blade in the base board, or plate, is widened for simultaneously cutting out two channel walls in manula circular saw operation. The base plate may be raised at the front, to form counter bearing for the motor and saw shafts. Battens can be flat slitted by means of an angle plate sliding under the base plate, and precise hand saw guiding is possible at corners.

Description

Hand circle saw add ons

Description and way of working.

a. Slitting slats on the building.

The scheme is simple: between the usual spacer of the saw cut to the board edge - A in all sketches - the wooden strip (lo HL) is against an under the base plate - GR in all sketches - Settable sliding angle plate - BL clamped in all sketches. In order to avoid a continuous long slot for the mounting screws, the slot was divided into oblong holes (5 LLO).

The assembly screw e Q 5 X) can be inserted at the top or at the bottom and can be moved forwards and backwards steplessly. The spacer was in its flat Profile bar referred to as a web (1 + 7 St).

This bar can be easily removed from clip-on parts (1 d) Forming ((1 c); to a hook handle - HGR - is easily possible.

The hook handle can also be used as an individual part (1 a) by means of riveted, The welded C-rail - C - can be screwed onto each web at a later date (1 b F ei drilled web («6 ST black: can be a countersunk screw from below e and by means of a nut - M - a mostly plastic handle - GR - can be retrofitted on each bar. This round handle is not very stable, a shaped handle ((8 GR) much better, especially with two screws can also be mounted directly on the base plate - GR using the screws - SCH) further improvement means a hinged handle (9 GR Y with locking - AR - in different holes by pin or screw, by means of the handles each one is Hand-held circular saw can also be better managed afterwards.

b. Foot parts as opposed to spacers.

The name is problematic because the foot part holds over the Bar ((21 ST) the base plate at a precise distance mostly to the floor or Ceiling.It can be like «So + 21) a bar with an 'outer strip, in contrast to the The foot of the usual spacer has the spacer bar / stop - A - inside (17). It is possible to attach two guide strips to this stop (22 A> C 22 BS) and the bridge (18 ST)? to be mounted with a connecting screw (18 VS) Naturally, the screw must not protrude on the side of the stop. The countersunk hole is attached in the thinner metal part, the thread in the stronger and therefore better in the bar Holes in the stop (or more Y allow a wide variety of assemblies.

c. Create ducts "in the plaster".

Of course there are special devices and very simple devices with enormous large amount of dust. Hand-held circular saws are cheap in that they are applicable is large and therefore the investment is divided into many areas.

An "in the plaster" channel has two side walls and a bottom surface. Simplest possible way to fix a wooden strip (2 BL) with nails driven in at an angle - NA - to fit in the plasterboard - G. It does not make large holes with the thinnest steel nails. In masonry, however, things are getting critical. With the foot part, however, you can mill channels for heating pipes exactly parallel to the floor and those for the electrical lines parallel to the ceiling. The guidance can be improved if the base plate has webs at the front and back that jointly support a stop / spacer bar, i.e. one At the front and back in the saw cut or right and left on the narrow sides of the base plate, it is advantageous to have a wider cutout for the saw blade, i.e. (16 + 20) the possibility of installing several saw blades (20 5Ä) with intermediate sleeves - Z - and instead of a short screw an axle thread # - AG -. Such an extension easily becomes unstable. You can Base plate (20 G). Increase an inherently stable part in front of the saw blade and, if possible, provide it with a ball bearing (2o KL 1 to counter-support the saw blade axis. Another method would be to make the protective hood (23 HA) of the saw blades (SÄ) larger at the front and use Screw - S - to create a counter bearing.

The wooden bar (3 HL) pressed into the plaster and through the queer bars adjusted, represents the simplest duct in masonry Cutting resistance not as great as in masonry (16).

The plastic channels are pressed together a little at the top and pushed in (15 b ) so that the upper edges - c + d - are in the correct shape (15 a ) can spread again.

If the edges / walls are cut into sufficient depth, break out is necessary pretty easy with a thin chisel. The scraper (11 Sch) has lateral rollers - RO - that run on the wall surfaces depending on the incline of the handle - GR - can you scrape deeper or shallower, analogously a device (12> for composite panels. The drawn stimulus or soldering cartridge is similar on the market However, this is not about heating wires / resistance wires but the square - GDR - is itself the resistance filament for cutting out the styrofoam Pipe clamp with extended legs (13 KL) clamped onto the metal part (13 ME) has the same purpose as the roles (11 RO).

Claims (1)

Handkreis saw additional property rights: As new and to to protect it is requested that ... 1. for a simultaneous cut-out of two duct walls, the cut-out for the saw blade is widened in the base board. 2.) the base plate at the front as a counter bearing for the motor and saw axes is pulled up, this counter bearing is a ball bearing if possible. 3.) analogously this is also possible for hand protection, 4.) by means of an angle plate slidably attached under the base plate strips flat can be sliced. 5.) 'in contrast to the usual spacer, its stop bar In contrast to the "foot", it was welded to provide a precise suction in corners for the hand saw to have. 6.) the stop can also be implemented as buses and spacers (more common) is mountable. 7.) for bars of the spacers that have to be pushed in, on these bars or the base plate, additional handles for Saw guide and, if possible, with a joint. 8.> a scraper with rollers on the wall surface on the side The sewer walls that have been cut out run and thus the canal base is leveled. 9.) analogous to 8.) a filament in composite panels the channels cut out. lo.) with only sawing out / milling out channel walls also quite weak and existing hand-held circular saws can be used by the do-it-yourselfers. 11.1 you can stabilize the stop bars that before and behind the saw cut a bar each hold a common stop bar. 12.) only the base plate of the, if possible, with a suction device provided circular saw must be replaced or provided with additives and Only the spacer has to be exchanged for convertible stop bars.