Title: Drawing and writing brush-pen with round and flat hair and adjustable flow of permanent liquid ink

Abstract: Brush-pen of round and flat hair and permanent liquid ink of adjustable flow for drawing and writing, including a container on the upper part of the outer body of the ferrule. This container is provided with a cap with a controlling device, into which the desired liquid ink is introduced. The ink goes through an orifice of the upper part of an outer cylinder of the ferrule and through a winged guide cap of an inner cylinder of the ferrule. The inner cylinder contains a piston provided with a pressure shaft controlled by the controlling device of the cap so as to provide adjustment of the passage of ink through a hollow needle of the ferrule. This maintains a constant flow of ink to the hair (brush) tip in the desired amount, doing without the need of inkpots. The alternating downwards and upwards movement of the piston keeps the channel constantly clean.

Do you think this is a good invention? Vote now:

Votes so far: For:(0) Against:(0)
Other info:

Inventors: Negreiros, Salvio Correia Lima (Rio de Janeiro, BR)

Application Number: 487637
Filing Date: 1974-07-11
Publication_date: 1976-07-13
Assignee:
Primary Class(es): 401/279 D19/41
Other Classes:
US Patent Ref:

862630	Aug, 1907	Garvey et al.	401/279.
965075	Jul, 1910	Cardinet	401/270.
1063020	May, 1913	Ellis	401/279.
1253934	Jan, 1918	Busch	401/4.
1572362	Feb, 1926	Rapisardi	401/279.
2331672	Oct, 1943	Falkman	401/278.

Other Refs:
Primary Examiner: Charles, Lawrence
Assistant Examiner:
Attorney: Burns, Doane, Swecker & Mathis