'280 
Method of Obtaining Patents . 
any foreign country . — — — 
Also, that he (or she) hath resided in the United States 
two years and upwards. -- 
— J. P. 
The specification must be accompanied by a good 
drawing, in perspective, of the whole machine or appara- 
tus, “ where the nature of the case admits of drawings ; 
or with specimens of the ingredients, and of the compo- 
sition of matter, sufficient in quantity for the purpose of 
experiment, where the invention is of a composition of 
matter. And such inventor shall, moreover, deliver a 
model of his machine, provided the Secretary shall deem 
such model to be necessary.”! It is requisite, in giving 
a drawing of the machine, to give also sectional drawings 
of the interior, when the machine is complex : and every 
drawing should be accompanied with explanatory refer- 
ences. When a machine is complex, a model will like- 
wise be necessary, not only to explain and render it 
comprehensible to a common capacity, but also to pre- 
vent infringements of rights ; for many will plead igno- 
rance of drawings, who cannot avoid the conviction of 
wheels and pinions. 
The drawings ought not to exceed a quarto size, and 
if confined to octavo they would be still better, where it 
can be done conveniently and distinctly. 
Many of the drawings in this office are executed in a 
very handsome style, and do much credit to the talents 
of the gentlemen whose names are ascertained. If the 
artists would always sign them, information might be gi- 
ven to the applicants for patents where to apply for 
drawings. 
* Lav/s of the United States, vol. 5, chap, xxv, p. 89 
t Ibid, vol. 2, chap, xi, p. 202. 
