受験番号：32IPM027
問１[0001]The present invention relates to cleaning a bathwater heater using the waterpressure of tap water pressure and a cleaning tool.
[0002]
Conventionally, methods for cleaning a bathwater heater have been only
methods in which a hot water contact portion in a bathtub is removed and the bathwater
heater is cleaned by strongly pouring water into the bathwater heater using a vinyl hose,or the bathwater heater is cleaned with a commercially available carbonated chemical,etc.
[0003]The methods have the following drawbacks.

(i) Even when water is strongly poured using a vinyl hose, sludge is not completely
removed and accumulates immediately.
(ii) Chemical cleaning is difficult to use.
(iii) Chemical cleaning is expensive for one use.
(iv) Water pollution is caused.
(v) In particular, milky bathwater makes the bathwater heater, and, when reheating is
performed while a bath is taken, a rattling sound is made and sludge comes out from a
hot water gate, which is very dirty and unsanitary.
The present invention has been made to eliminate these drawbacks.
[0004]The present invention is directed to a bathwater heater cleaning tool forcleaning a bathwater heater using tap water pressure, which includes a stepped pipe (1)made of resin, a nozzle portion (2), and a cleaning member provided at the tip of thenozzle portion (2) and composed of a sponge (3) for removing dirt

問２．
[0016]
FIG. 2 is a plan view illustrating a type-1 jig 2a, shows a jigsaw body 1 in atransparent manner for detailed description, and represents a positional relationshipbetween a base plate 1a, a circular guide 8, a jigsaw blade 10 of a cutter, and the type-1
jig 2a.
[0017]The type-1 jig 2a is made of metal and includes fixing metal fittings 3 on aback surface thereof at both ends thereof.

A diagonal slider 4 that slides on ahalf-angle 45-degree line at a right angle portion of a plate material is fixed to the uppersurface of the type-1 jig 2a such that whether to fix the diagonal slider 4 by two guideblocks equipped with set screws or make the diagonal slider 4 slidable is selected.

Thediagonal slider 4 has an end portion 5 with an arrowhead shape, and a rotary bearing 6
to which a connection end of the circular guide 8 dedicated for a jigsaw 1 is rotatably
connected is provided in the end portion 5.
[0018]
FIG. 3 is a front view of the type-1 jig, showing that the fixing metal fittings 3
are located on the back surface side of adjacent A side and B side of the right angle
portion, to be subjected to quadrant processing, of the plate material so as to hold theplate material, and also showing a connection state of the rotary bearing 6 in the end
portion 5 and the circular guide 8.
[0019]
When installing the type 1 jig 2a on the plate material, the arrowhead-shaped
end portion 5 of the diagonal slider 4 is slid to be aligned with the apex G of the rightangle portion, and then the two screw-type fixing metal fittings 3 on the back surface
side of the plate material are fixed to the plate material.

As a result, the position of therotary bearing 6 located in the end portion 5 of the diagonal slider 4 constantly moves
on the 45-degree line in a slidable range.

Therefore, the distances from the rotary

bearing 6 to the A side and the B side are equal to each other regardless of the positionof the rotary bearing 6, and quadrant processing with a high degree of completion isachieved by one cutting when, in a state where a side surface of the cutting blade 10 of
the jigsaw 1 is aligned with a cutting start position for the A side or the B side and theset screws 7 of the guide blocks for guiding the diagonal slider 4 and a set screw 9 of aguide block for the circular guide are locked, the plate material is cut while the jigsaw 1
is moved to the other side along the turning radius of the circular guide 8.

図２45-DEGREE LINE問３．

1.

A fertilizer spreader comprising:a body F travelling by itself or by towing;
an impeller 4 rotating about a vertical axis;
an impeller case C in which the impeller 4 is housed;a hopper H including an agitator 5 rotating about the vertical axis, in an innerspace thereof;a rotation shaft 20 for the agitator 5 in the hopper H;
a central drive shaft 2 axially mounted to the body F such that an upper endside thereof protrudes into the hopper H;
a clutch K freely "engaged" and "disengaged";an outer cylinder shaft 3 fitted to an outer periphery on a lower end side of thecentral drive shaft 2 to be axially mounted to the body F;
an input shaft 1; andconduction mechanisms d1 and d2, wherein
the impeller case C and the hopper H are mounted to the body F so as to be
stacked on top of each other such that the hopper H is located above the impeller caseC,
the rotation shaft 20 is conducted to the central drive shaft 2 via the clutch K,
the impeller 4 in the impeller case C has a shaft core portion connected to theouter cylinder shaft 3, andthe central drive shaft 2 and the outer cylinder shaft 3 are conducted to theinput shaft 1 via the conduction mechanisms d1 and d2, respectively, such that theimpeller 4 and the agitator 5 are driven so as to rotate at different rotation speeds.