Improvements in or relating to Reconnoitering Sketching Boards and Apparatus.
Year: 1891

page_text: Date of Application, 18th Feb., 1891
Complete Specification Left, 18th Nov., 1891-Accepted, 19th Dec., 1891
PROVISIONAL SPECIFICATION.
Improvements in or relating to Reconnoitering Sketching Boards
and Apparatus.
I HENRY SHUTE of The Guards Club Pall Mall, London, Captain in Her
Majesty's Coldstream Guards do hereby declare the nature of this invention
to be as follows:-
This invention relates to sketching boards used principally for military
reconnoitering or topographical sketching and to the apparatus combined with
said boards for holding and fixing the paper, fixing or adjusting the straight edge
and ascertaining gradients.
For fixing the ends of the roll of paper upon the rollers destined to hold the
same, the said rollers are each provided with a longitudinal slot to receive the end
of the paper and on one or both sides of each said slot are cut or fixed teeth, pins
or jagged edges to prevent the paper from being withdrawn from the slot by the
tension of the paper stretched upon the board. To fix the rollers after the paper
has been adjusted on the board, two screw threaded pins fixed to the rollers in
prolongations of the axes thereof respectively project beyond the upper cross piece
of the board in which one end of each roller is carried, and on said pins are
respectively screwed two set nuts so that by screwing up said set nuts tightly
against fixed collars on the cross piece the rollers may be prevented from revolving.
When the paper is to be moved upon the board, the set nuts are loosened so that
the rollers are free to be turned. After adjustment of the paper the set nuts are
again screwed up.
on
To provide for fixing the straight edge or ruler at any position or angle
the board, a slotted arm of vulcanite wood or other suitable material is pivoted
at or near one corner of the board by means of a set nut or set screw by
The
which also it may be clamped or fixed in position when adjusted.
length of the slot is approximately equal to the length of the diagonal of
the board.
To the said arm one end of the straight edge or ruler is pivoted by means of a
set screw or screw with set nut passing through the slot in the arm and movable
therein so that the ruler may be clamped by said set nut or screw at any angle to
the arm and at any position in the slot.
At or across the back of the head of the board, a frame or case is fixed having
a straight upper edge projecting above the board and a curved and bevelled scale
at one end. The said frame or case carries a clinometer the point of which moves
upon the scale and is also bent or bevelled so that the clinometer may be used
by holding the upper edge of the frame or case either alligned with the eye or
at right angles thereto without altering the position of the board on the arm or
removing it therefrom for ascertaining respectively the gradient between the
observer and the object observed or the gradient or slope between two objects or
points in the field of view.
Dated this 18th day of February 1891.
HERBERT & CO.,
Agents to Applicant.

page_text: COMPLETE SPECIFICATION.
Improvements in or relating to Reconnoitering Sketching Boards
and Apparatus.
I, HENRY SHUTE, of The Guards Club, Pall Mall, London, Captain in Her
Majesty's Coldstream Guards, 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:-
This invention relates to sketching boards used principally for military
reconnoitering or topographical sketching and to the apparatus combined with
said boards for holding and fixing the paper, fixing or adjusting the straight edge
and ascertaining gradients.
For fixing the ends of the roll of paper upon the rollers destined to hold the same,
the said rollers are cach provided with a longitudinal slot which is provided for
without making any slit or hole in the roller itself by placing along the roller a
band or flat bar of metal the ends of which are bent over and have oblong holes
in them through which the pins fixed to the ends of the rollers pass so that the
edge of the paper may be passed between the surface of the roller and the covering
bar on one or both sides of which are cut or fixed teeth, pins or jagged edges to
prevent the paper from being withdrawn from the slot by the tension of the paper
stretched upon the board. To fix the rollers after the paper has been adjusted on
the board, the two screw threaded pins fixed to the rollers in prolongations of the
axes thereof respectively, project beyond the upper cross piece of the board in
which one end of each roller is carried and on said pins are respectively screwed
two set nuts so that by screwing up said set nuts tightly against collars on
the cross piece the rollers may be prevented from revolving. When the paper
is to be moved upon the board, the set nuts are loosened so that the rollers are
free to be turned. After adjustment of the paper the set nuts arc again
screwed up.
To provide for fixing the straight edge or ruler at any position or angle
on the board, a slotted arm of vulcanite, wood or other suitable material
is pivoted at or near one corner of the board by means of a set nut or set
screw by which also it may be clamped or fixed in position when adjusted.
The length of the slot is approximately equal to the length of the diagonal
of the board.
To the said arm one end of the straight edge or ruler is pivoted by means of a
set screw, or screw with set nut passing through the slot in the arm and movable
therein, so that the ruler may be clamped by said set nut or screw at any angle to
the arm and at any position in the slot.
At or across the back of the head of the board a frame or case is fixed having
a straight upper edge projecting above the board and a curved and bevelled scale
at one end. The said frame or case carries a clinometer the point of which moves
upon the scale and is also bent or bevelled so that the clinometer may be used by
holding the upper edge of the frame or case either alligned with the eye or at
right angles thereto without altering the position of the board on the arm or
removing it therefrom, for ascertaining respectively the gradient between the
observer and the object observed or the gradient or slope between two objects or
points in the field of view.
The accompanying drawings illustrate the invention
Fig. 1 being a front or upper face view of the board.
Fig. 2 a view of the underside of the board with the back of the clinometer case
removed to show the clinometer.
A. A are the rollers, B B the flat bars thereon with teeth such as C C and end
lugs D D which resting in cut away notches in the ends of the rollers have oblong
slots to engage on the pins E E at the ends of the rollers. F.F₁are the set nuts

page_text: screwed upon the pins E E and adapted to be screwed up against the cross bar G
or against metal collars or washers F. H is the slotted and pivoted arm. J the
straight edge pivoted at one end in the slot of the arm H as before described.
K is a compass to which no claim is made in this invention. L is the clinometer
case with the back removed in Fig. 2. M is the curved and bevelled scale. N the
balanced beam of the clinometer pivoted at O and having the point P indicating on
the scale M the inclination of the upper edge ab of the clinometer case and conse-
quently the gradient with which the said edge may be alligned or laid parallel.
Qis a wrist strap to which no claim is made in this invention. R are small screws
inserted in holes in the ends of the pins E to prevent accidental unscrewing and loss
of the muts F F.
The board is made in the usual manner the rollers, straight edge and clinometer
being arranged as herein described.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
:-
1: In a reconnoitering sketching board the construction for fixing the rollers as
herein described.
2. In a reconnoitering sketching board the combination with the board of
the pivoted slotted arm H and the straight edge pivoted in the slot of the
said arm.
3. In a reconnoitering sketching board the combination with the board of the
clinometer having a balanced beam with an indicator thereon, a fixed scale and an
edge ab, substantially as and for the purpose set forth.
4. As a reconnoitering apparatus, a clinometer having a case 1 with a straight
edge ab, a balance beam N with point P and a bevelled scale M as and for the
purpose set forth.
.
Dated this 18th day of November 1801
HERBERT & Co.,
18, Buckingham Street, Strand, London, W.C., Agents for the Applicant.