Improvements in Folding Key-boards and Stop Actions for Organs.
Year: 1892

page_text: Date of Application, 18th Aug., 1892-Accepted, 8th Oct., 1892
COMPLETE SPECIFICATION.
Improvements in Folding Key-boards and Stop Actions for Organs.
I, FREDERICK WILLIAM HEDGELAND, of corner of Twenty-Sixth and
Rockwell Streets, Chicago, Illinois, United States of America, Artisan, do hereby
declare the nature of my invention and in what manner the same is to be performed,
to be particularly described and ascertained in, and by, the following statement:-
Figure 1 is a broken-away vertical transverse section embodying my improved
features; and
Figure 2 a broken-away plan of the stop-action part.
This invention relates to improvements in organs and the like, and has for its
object to provide such musical instruments with a folding key-board and stop-
action, as will be hereinafter set forth.
The present style of organ with its rigid key-board is too large to be taken
through an ordinary door. By having the key-board and stop action fold up the
instrument is more easily handled and takes up less room when not in use.
Referring to the drawing, A represents the organ case, B the key-board, and C
the stop-action part or frame.
The key-board is hinged to the case, as at a, and folds upwardly, the outer edge
following the dotted line a¹.
The stop-action frame, C, is provided at each end with a pivot-pin or screw, b,
which, being inserted in the interior ends of the case, permits of the frame folding
upwardly and inwardly on the line b¹. The stops are each provided with the
pivot-joint 6, and are thereby adapted to follow the movement of their frame in
its change from a horizontal to a vertical position.
The inner edge of the locking-plate d is secured to the stop-action frame and
moves therewith. When the folding parts are in position for use, as shown in
Fig. 1, the plate d covers the line of separation between the key-board and
stop-action frame, and locks or holds the key-board in its open position, so that the
stop-action must first be moved before the key-board can be folded up.
The opening in the case, above the key-board necessary in this form of con-
struction, is closed by means of the drop-door, D, hinged to the inside front, as at
d. The lower end of the door rests loosely on the covering-board
of the stop-
action frame and moves upwardly therewith on line h.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is:
1. An organ or like instrument, provided with a folding key-board adapted to
fold inside of the case proper, substantially as and for the purpose set forth.
2. An organ or like musical instrument, provided with a folding stop-action,
substantially as described.
3. In an organ, the combination with the inclosing case, of the stop-action
frame, having its respective ends pivoted to the corresponding ends of said case,
and the stop-action pivoted as at b, whereby said parts are adapted to be raised
upwardly out of the way of the folding key-board, substantially as described.
4. In an organ, the combination of the folding key-board, the folding stop-
action, and the locking-plate secured to the stop-action frame, substantially as
described.
5. In an organ, the combination with the inclosing case, of the drop-door, hinged

page_text: thereto and adapted to close the opening above the key-board and stop-action when
the same are turned downwardly in position for use, substantially as described.
Chicago, 30th July 1892.
Signed in the presence of
J. B. DONALSON,
L. M. FREEMAN.
FREDERICK WILLIAM HEDGELAND.
Haseltine, Lake & Co.,
45, Southampton Buildings, London, Agents for the Applicant.