A NEW METRICAL APPARATUS WITH TABLE
Year: 1860

page_text: LETTERS PATENT to Jean Baptiste Auguste Carpentier, of Boulogne-sur-
Mer, in the Empire of France, Inspector of Primary Instruction at
Boulogne-sur-Mer, for the Invention of "A NEW METRICAL APPARATUS
WITH TABLE."
COMPLETE SPECIFICATION filed by the said Jean Baptiste Auguste
Carpentier at the Office of the Commissioners of Patents, with his
Petition and Declaration, on the 16th April 1860, pursuant to the
9th Section of the Patent Law Amendment Act, 1852.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JEAN
BAPTISTE AUGUSTE CARPENTIER, of Boulogne-sur-Mer, in the Empire of France,
Inspector of Primary Instruction at Boulogne-sur-Mer, send greeting.
WHEREAS I am in possession of an Invention of "A NEW METRICAL
APPARATUS WITH TABLE," and have petitioned Her Majesty to grant unto me,
my executors, administrators, and assigns, Her Royal Letters Patent for the
same, and have made solemn declaration that I am the true and first Inventor
thereof.
NOW KNOW YE, that I, the said Jean Baptiste Auguste Carpentier, do
hereby declare the following Complete Specification under my hand and seal
fully describes and ascertains the nature of the said Invention and the manner
in which the same is to be performed (reference being had to the accompany-
ing Drawings), that is to say :-
The present Invention consists of a box containing a collection of models by

page_text: means of which the weights and measures of any country can be practically
taught. It consists of a receptacle of wood or other material, according to
fancy, having a lid opening so as to form a table on which the different objects
may be placed when required for illustrating. The lid or door is rendered
more solid by means by means of resting hinges; the interior of the receptacle
is divided into compartments, in which the various models are placed when
not required. A rod of iron or other material is adjusted at the top so as to
slide in and out, and acts as support for the scales; the lid can be closed by
a lock or not, as required. To aid in moving the receptacle a handle is placed
on each side; when required for use it can be placed on a table or hung on
the wall, being furnished with a ring at the top. At the lower part, on the
right hand side, a drawer is arranged for holding shot, which serves in illus-
trating the weights and measures. The objects contained in the receptacle
are as follows:-
To illustrate the measures of length.-1st, a solid sphere of wood with
circles representing the equator, meridians, & other divisions; 2nd, a folding
yard measure capable of being divided into the various intermediate measures;;
3d, a foot measure for fractional parts.
To illustrate measures of surface.-4th, a T-square for tracing figures on
the black board; 5th, an air level for explaining the horizontal line; 6th, a
plumb line to aid in explaining the vertical line; 7th, a wooden setter or set
square for use on the black board; 8th, a large pair of wooden compasses;
9th, a surveyors' chain.
To illustrate measures of solidity.-10th, a cube of wood with sections for
showing the formation of cubes; 11th, assemblage of wooden pieces to explain
wood measurement, with horizontal slide bar and graduated upright; 12th, a
straight parallelopiped having six rectangular sides; 13th, oblique parallel-
opiped having four rectangular sides and two parallelograms; 14th, straight
pentagonal prism, which, by a sectional division, gives, 1st, an oblique prism,.
and, 2nd, a false prism; 15th, a perfect pyramid in sections, showing, 1st, an
oblique pyramid; 2nd, a false pyramid cut off parallel to the base; 3rd, a.
pyramid cut off obliquely to the base; 16th, a false oblique triangular prism
representing the roof of a house with turned down gable end. By a sectional
division the form of a pile of bullets and similar shapes may be obtained.
17th, a perfect cylinder, which, by a division, gives an oblique and a false
cylinder; 18th, a perfect cone with sectional divisions, showing, 1st, An
oblique cone; 2nd, a cone cut off parallel to the base; 3rd, a cone cut off
obliquely at the base; 19th, model of a cask with hoops & staves with notches
grooved in them for the entry of the head. The sphere is shown No. 1, and

page_text: the cube No. 10. The bases of the cone represent pentagons, and the sections
of the perfect cone give a circle and ellipsis, and the section of the cylinder
gives an oval.
To illustrate the measures of capacity.-20th, a solid cubic foot and
receptacle of same size; 21st, a set of measures for liquids; 22nd, model
tin measures; 23rd, series of measures for wines, spirits, oils, &c.; 24th,
series of wooden measures for dry matters.
To illustrate measures of weight.-25th, a solid and a hollow cube to aid
in illustrating weight; 26th, series of weights of iron, copper, and brass
leaves for the smaller weights. The weights are placed in hollows arranged
in the receptacle. 27th, a set of scales.
The money table.-28th, a board with cavities for containing the pieces of
coin now current, the names are written beneath; the money may be real or
only imitation.
Various objects. 29th, a thermometer divided after Fahrenheit, Réaumur,
& Centigrade; 30th, a mariner's compass with rhomb line; 31st & 32nd,
a clock dial used in illustrating the time, and a compass card showing the
use of the mariner's compass; 33rd, an alcoometer for illustrating the weight
Fig. 1, front view of the box or receptacle, with divisions for the reception
of the different objects; Fig. 2, side view of same, showing the lid acting as
table, and the slide rod with scales resting on it.
The weights and measures may be further completed by having models of
those used on the Continent. Each box is accompanied by a table of the
several weights and measures.
Having thus described my Invention, what I claim and desire to secure by
Letters Patent is, the above arrangement of models for the purpose of assisting
instruction by means of practical illustration.
In witness whereof I, the said Jean Baptiste Auguste Carpentier, have
hereunto set my hand and seal, this Sixteenth day of April, in
the year of our Lord One thousand eight hundred and sixty.
JEAN BAPTISTE AUGUSTE CARPENTIER. (L.S.)