If the feeder is worked by the foot of the player such a pedal as that shown in Fig. 25 will be found convenient. It is made of hard wood--oak, birch, ash, or walnut--with iron or brass hoops and pivots, and is screwed to the floor of the room, independently of the organ-frame. The little roller should be covered or muffled with soft leather, and you will see that it rolls clear of the valve-holes in the feeder. By lengthening the middle piece or shaft we may work with the right foot, a feeder having its play on the left side; but in such a case the whole machine will be best made of iron by a smith. He will coat the pedal for you with india-rubber where the foot rests upon it--a much better plan than roughening it like a rasp. The pedal, as figured, is intended to be on the extreme right of the player, and to be clear of a pedal-board of two octaves.
The reader will see that by reversing the positions of the arms of the pedal it may be made to suit any little organ with a manual only. In this case the muffled roller will traverse the feeder not crosswise, but lengthwise.
We pointed out in a former page that the position of a bellows-blower must be considered in your plans for the finished instrument. If he stands close to the player on either side of him the lever will be easily poised upon a strong pin projecting from the frame. A piece of web or a leathern strap will be a better connection with the feeder than any rigid bar of wood or of iron. If the organ is not placed against a wall the position of the blower may with equal ease be precisely reversed. The lever, however, may be arranged parallel to the back wall by constructing your bellows in the first instance with a view to this, the hinge of the feeder being on one of its long sides, as we have explained in a former page. Or, with a feeder hinged as usual at its end, the lever may still be parallel to the back wall by acting upon an arm with a roller precisely similar to our foot-blower.
Another mode of effecting this is shown in Fig. 26. _a b_ is the handle turning on a strong pin at _a_, fixed to the back of the frame. _c d_ is a shaft which should be of iron, but might be of hard wood, hooped at the ends, having two arms, _e_ and _f_, projecting from it in opposite directions. This shaft turns on stout iron pivots which enter holes in stanchions securely fixed to the frame. These holes will be better for being bushed with brass. _g_ is a short wooden link connecting the handle with the arm _f_; and _h_ is a wooden rod which connects the arm _e_ with a forked lug screwed to the feeder. All these connections are by stout turned pins of iron or brass. It is plain that every downstroke of the handle _a b_ will bring up the feeder. All this is a matter of mere mechanical arrangement; the simpler you can make it, by diminishing as much as possible the number of pivots or turnings, the better it will be.