An Instrument for Ascertaining Levels and Angles.
Year: 1896

page_text: PROVISIONAL SPECIFICATION.
An Instrument for Ascertaining Levels and Angles.
We, CHARLES SHORE, of 55 Bridgman Place, Bolton, in the County of Lancaster,
Electrical Engineer, and CHARLES HEAP, of Caldershaw, Rochdale, in the said
County, Dyer and Finisher, do hereby declare the nature of this Invention to be
as follows:-
Our invention relates to an instrument for ascertaining levels and angles, and
consists in its simplest form of a needle or indicator mounted on a spindle or arbor
free to revolve in a suitable stand, casing or other support preferably with a broad
flat base. The needle or indicator is weighted in such a manner as to cause it to
normally assume a perpendicular position. The stand or casing has a graduated
face and when the base is placed on a true horizontal plane the needle coming
opposite zero will indicate the same, and when the base is placed on a plane at any
angle to the horizontal a corresponding change will take place in the position of
the needle and the angle of deviation will be indicated by the scale.
Dated this 6th day of November 1896.
H. B. BARLOW & GILLETT,
Agents for Applicants.
COMPLETE SPECIFICATION.
An Instrument for Ascertaining Levels and Angles.
We, CHARLES SHORE, of 55 Bridgman Place, Bolton, in the County of Lancaster,
Electrical Engineer, and CHARLES HEAP, of Caldershaw, Rochdale, in the said
County, Dyer and Finisher, 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:-
Our invention relates to an instrument for ascertaining levels and angles, and
consists in its simplest form of a needle or indicator mounted on a spindle or
arbor free to revolve in a suitable stand, casing or other support preferably with
a broad flat base. The needle or indicator is weighted in such a manner as to
cause it to normally assume a perpendicular position.
In the acompanying sheet of drawings-
Figure 1 is a front elevation. Fig. 2 a sectional plan, and Fig. 3 a transverse
vertical section of the instrument.
In these views, a designates the broad flat base upon
casing 6 which is made of metal or other suitable material.
casing is graduated as shown in Fig. 1 from Zero to one
which is mounted the
The front face of the
hundred and eighty

page_text: degrees or otherwise suitably graduated and is covered with a glass face c. The
needle or indicator d is fixed on an arbor e which passes through the casing b
and has one bearing in the glass face c and its other bearing in an adjustable tail
pin supported in a bracket f secured to the casing; fixed on the arbor e inside
the casing is a weight g which causes the needle d to come opposite zero on the
graduated face when the base a is resting on a true horizontal plane.
When, however, the base is placed on a plane at any angle to the horizontal a
corresponding change will take place in the position of the needle d and the
angle of deviation will be indicated on the scale.
Having now particularly described and ascertained the nature of our said in-
vention and in what manner the same is to be performed, we declare that what we
claim is:-
In combination, a casing having a flat base and a graduated face and supporting
an arbor free to rotate in suitable bearings, a weighted needle fixed on said arbor
and arranged to indicate the angle of deviation on the graduated face of the casing
substantially as herein set forth.
Doted this fith day of August 1897
H. B. BARLOW & GILLETT,
17 St. Ann's Square, Manchester Agents for Applicants,