Improvements in or relating to Binocular Telescopes or the like.
Year: 1898

page_text: Date of Application, 20th Dec., 1898-Accepted, 21st Jan., 1899
COMPLETE SPECIFICATION.
Improvements in or relating to Binocular Telescopes or the like.
I, REGINALD HADDAN, of the Firm of Herbert Haddan & Co., of 18, Bucking-
ham Street, Strand, W.C., London, Patent Agent, do hereby declare the nature
of this invention a communication to me from abroad by Vicente Gastell Rabasa,
and Vicente Galatayud, of 5, Plaza de la Constitucion, Barcelona, in the Kingdom
of Spain, and in what manner the same is to be performed to be particularly
described and ascertained in and by the following statement:-
This invention relates to an improved binocular telescope.
The annexed drawing represents a horizontal view of the improved binocular
telescope.
The tubular body is composed of several pieces united one to the other by
means of screws or screw joints A A A A arranged at one or at each of their
extremities according to the spot which they shall occupy in the telescope.
The eye pieces BB can be adjusted or focussed independently one from the
other by means of set screws C C¹. This arrangement is of great consequence
as a considerable number of people have a different visual focus for each of the
eyes, and in existing binocular telescopes the two eye pieces are focussed together
so that the adjustment is not perfect for a great number of individuals which is
a great inconvenience.
In the improved binocular telescope the respective telescopes can be brought
nearer to, or farther apart, from one another in the same plaue consequently the
axes of the telescopes are always at the same level with regard to one another.
For this means a plate D is arranged whereon one of the telescopes is fastened
the other being movable on the same with guides conveniently arranged. Both
telescopes could also be movable.
The movement of bringing to or apart is obtained by means of toothed
pinions E E turned by means of the button F fastened at one extremity of the
axle G upon which the two toothed pinions are also mounted. These pinions
engage with the rack bars H H¹ the one extremity of each being fastened to the
telescope which is to be moved. These rack bars could be fastened on the plate D
and the supports I I¹ of the axle G could be arranged on the movable telescope.
The described rack movement could be replaced by screw or other mechanism
attaining the same results.
The form of the tubes the dimensions of the telescopes and the combination
of the lenses can be as convenient, without departing from the spirit of the
invention.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed I declare that what I
claim is:-
An improved binocular telescope in which
1. The telescopes are composed of disconnectable tube sections fastened the

page_text: 2. The eye glasses can be focussed the one independently from the other.
3. One of the telescopes can be drawn nearer to or further from the other by
means of a sliding mechanism of such kind that the axes of the said telescopes
remain always at the same level.
4. The telescopes are mounted upon a plate upon which one of the telescopes
is stationary whilst the other is movable or on which both can be movable by
means of convenient guides.