Improvements in Upright Pianoforte Action.
Year: 1891

page_text: Date of Application, 27th July, 1891
Complete Specification Left, 11th May; 1892-Accepted, 11th June, 1892
PROVISIONAL
SPECIFICATION.
Improvements in Upright Pianoforte Action.
We BROOKS LIMITED of 31 Lyme Street Camden Town in the County
of Middlesex Pianoforte Action Manufacturers and JAMES ALEXANDER
CRUICKSHANK, Secretary and Manager of the said Company, do hereby declare
the nature of this invention to be as follows:-
The object of the invention is to obtain improved "set off" with cheapness and
simplicity of the parts.
According to one arrangement the "set off" is attached to a piece which is
affixed at its lower end to an arm hinged to the hammer rail. The upper end of
this piece is perforated and through this perforation passes a guiding pin projecting
from the sticker.
The adjustable "set off" button is carried by a screwed pin fitted in the
sticker.
Or the hinged arm from the hammer rail is formed with a clothed recess, or
notch, which receives into it a projection from the sticker and coöperates with it.
Dependent rigidly from the hinged arm is a "set off" piece which is engaged by an
adjustable "set off button mounted on its pin carried by the sticker.
"
Or the hinged arm may have a piece projecting downward from or inclined from
that arm, and carrying the "set off." This piece also is notched or perforated at
its lower part to engage a guide pin on the sticker.
Or the "set off" carried by the hinged arm from the hammer rail may be slung
or supported by means of a loop or string from the sticker engaging a hook thereon
or it may be a loop from the "set off" hung onto a hook or pin from the sticker.
Dated the 27th day of July 1891.
WM. BROOKES & SON,
55 & 56, Chancery Lane, London, Agents for the Applicants.
COMPLETE SPECIFICATION.
Improvements in Upright Pianoforte Action.
We BROOKS LIMITED of 31 Lyme Street, Camden Town, in the County
of Middlesex, Pianoforte Action Manufacturers, and JAMES ALEXANDER
CRUICKSHANK, Secretary and Manager of the said 'Company do hereby declare
the nature of this invention and in what manner the same is to be
performed, to be particularly described and ascertained in and by the following
statement :-
The object of the invention is to obtain improved "set off" with cheapness and
simplicity of the parts.
According to one arrangement the "set off" is attached to a piece which is
affixed at its lower end to an arm hinged to the hammer rail. The upper end
of this piece is perforated and through this perforation passes a guiding pin
projecting from the sticker.
The adjustable "set off" button is carried by a screwed pin fitted in the
sticker.
Or the hinged arm from the hammer rail is formed with a clothed recess, or notch,
which receives into it a projection from the sticker and cooperates with it.
Dependent rigidly from the hinged arm is a "set off" piece which is engaged by an
adjustable "set off" button mounted on its pin carried by the sticker.
[Pins71

page_text: Or, the hinged arm may have a piece projecting downward from or inclined
from that arm,
and carrying the "set off." This piece also is notched or perforated
at its lower part to engage a guide pin on the sticker.
DESCRIPTION OF THE DRAWINGS.
Fig. 1 indicates by sectional side view an arrangement of parts of an upright
pianoforte action with one form of our improved set off applied. The set off a is
attached to a piece which is hinged at its lower or rearward end to an arm c
affixed to the hammer rail d. The outer end of this piece is perforated from a¹
upwards, and through this perforation passes a guiding pin el projecting from the
sticker e. The adjustable set off button is carried by a screwed pin e fitted in the
sticker e. d is the hammer and the other parts separately considered are of
the ordinary description.
Fig. 2 shews a similar view of a modification in which the hinged arm b supported
from the hammer rail d is formed with a clothed recess or notch g which receives
into it the projection e¹ from the sticker e, and cooperates with it. Dependent
rigidly from the hinged arm b is a set off piece a¹ which is engaged by an adjust-
able set off button mounted on the pin e² carried by the sticker e.
Fig. 3 is another modification in which the hinged arm 6 has a piece a¹ projecting
downwards from the arm band carrying the set off. This piece a' also is
notched or perforated at its lower part a¹ to engage a guide pin e¹ upon the
sticker.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed, we declare that what we
claim is.
1. The combination or arrangement of parts constituting a set off in upright
pianoforte actions, as and for the purposes hereinbefore set forth.
2. The combination or arrangement of parts constituting a set off in upright
pianoforte actions, as set forth in respect of Fig. 1.
3. The combination or arrangement of parts constituting a set off in upright
pianoforte actions, as set forth in respect of Fig. 2.
4. The combination or arrangement of parts constituting a set-off in upright
pianoforte actions, as set forth in respect of Fig. 3.
Dated the 10th day of May 1892.
WM. BROOKES & SON,
55 & 56, Chancery Lane, London, Agents for the Applicants.