IMPROVEMENTS IN THE RAILS OF PIANOFORTE ACTIONS
Year: 1885

page_text: I JOSEPH HERRBURGER, of N° 16, rue de l'Evangile, Paris, in the republic of
France, Pianoforte Action Manufacturer do hereby declare the nature of the said
invention for "IMPROVEMENTS IN THE RAILS OF PIANOFORTE ACTIONS" to be as
follows:-
Hitherto it has been the practice to employ either wood alone or wood covered
with sheet metal for forming the longitudinal rails on which are fixed the fulcrums
or centres on which are pivotted or fixed the different parts of pianoforte actions.
My invention consists in employing in place of such rails, longitudinal rails made
of iron or steel extending from end to end of the pianoforte action, the said rails
being made of such a section that all the positions and forms of the several parts
of the action can be applied thereto by means of screws, pins, rivets, or other
suitable means.
These improved metal rails possess the advantages of cheapness, and of not
becoming warped or curved from the effects of heat or dampness or dryness of the
atmosphere.
G. F. REDFERN,
4, South Street, Finsbury, London,
Agent for the Applicant.

page_text: Improvements in the Rails of Pianoforte Actions.
I JOSEPH HERRBURGER, of No 16 rue de l'Evangile Paris in the republic of
France Pianoforte Action Manufacturer 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:-
Hitherto it has been the practice to employ either wood alone or wood covered
with sheet metal for forming the longitudinal rails on which are fixed the fulcrums
or centres on which are pivotted or fixed the different parts of pianoforte actions.
My invention consists in employing in place of such rails longitudinal rails made
of iron or steel or other suitable metal extending from end to end of the pianoforte
action, the said rails being made of such a section that all the positions and forms
of the several parts of the action can be applied thereto by means of screws, pins,
rivets or other suitable means.
These improved metal rails possess the advantages of cheapness and of not
becoming warped or curved from the effects of heat or dampness or dryness of the
atmosphere.
The accompanying drawing represents in section a pianoforte action provided
with rails constructed according to my invention.
A, B, C, D is a section of the rail on which are fixed the centres or pins on which
pivot the hammer and the jacks. The section of this rail is so arranged as to suit
the different positions of the various parts. E, F, G, is the rail on which is placed
the wooden bar carrying the pieces which serve as stops for the hammer rods.
I, H, J, shews the upper rail on which is placed the mechanism of the dampers.
I do not confine myself to the precise form of the sections of rails shewn as these
will vary according to the particular kind of action nor to the number of these
rails.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what
I claim is
The manufacture of the longitudinal rails of pianoforte actions from iron, steel,
or other suitable metal as herein before described.