Abstract: A handwriting or ink applying device includes a casing for holding a flexible ink container, the casing having a writing tip at a writing end thereof The rear end of the writing tip communicates with an L-shaped ink-containing chamber. The ink-containing chamber has a valve interposed between the ink container and the chamber. The valve is connected to a spring biased lever arm that biases the valve into a closed position. A flexible bubble having an interior communicating via a channel with the ambient air is responsive to pressure differences between the ambient air and the interior of the chamber to open and close the valve as the level of ink in the ink-containing chamber rises and falls.

Abstract: A vector brush can be attached to the front face of a movable carriage of a device for cutting foil material. The vector brush includes an air brush, which can be adjusted in height, thereby adjusting the size of its atomizing cone. The motion of the air brush is controlled by the motion of the carriage in one direction and the motion of the foil strip moved underneath it in the perpendicular direction. After a pattern has been sprayed on the foil material with the vector brush, it can immediately be cut out with a cutting tool mounted on the same carriage.

Abstract: Tubular writing pens of the stylographic type, as used by artists and technical draftsmen. Particularly a tubular writing pen having superposed inner and outer ink pressure equalization chambers defined in the cylindrical pen body. A removable outer sleeve complementally engages the cylindrical body of the pen, to cover the outer pressure equalization chamber. A locking surface is defined in the removable sleeve rear edge, so that the sleeve may not be removed accidently with consequent ink loss and damage.

Abstract: A dispenser for the insertion of spacers between the strings of tennis, squash and badminton rackets includes a body having a delivery groove formed therein. The delivery groove is adapted to receive an interconnected strip of spacers and dispense the spacers individually between intersecting strings of a racket. The delivery groove may include a raised portion to allow the strip of spacers to be manually advanced within the device and a pair of prong-like projections for separating a pair of intersecting racket strings. The prong-like projections may have an abutment edge for positioning the interconnected strip of spacers.

Abstract: A cutting device comprising a support roller (8) freely rotatable in both directions to absorb the pressure of cutting, and a carrier (9) movable in the direction of the longitudinal axis of the support roller (8) on which is fastened a cutting tool (26,27) which can be brought into contact with the roll of material to be cut and present on the support roller (8). The improvement comprises lowering of the cutting tool (26,27) into an operating position, and raising from the operating position, by turning of an eccentric element (14,34) coupled with a pivotable arm (17) holding the cutting tool (26,27). The cutting tool (26,27) is suspended on the arm (17) and thereby limited in regard to its raising and lowering movement. A leaf spring (21) fixed on the arm (17) is braced on the upper end (28) of the cutting tool (26,27) to exert a penetrating force on the cutting tool (26,27) when the arm (17)is lowered.

Abstract: A device for covering an oblong housing opening (3), along which an element (5) extending with one portion of itself into the housing (1) is movable back and forth, which comprises a flexible band (4), which immovably is secured at each end of the housing opening (3). The band is guided via deflecting rollers (6, 7) and guide rollers (8, 9) secured on the element (5), so as to train about the proximate portion of the element (5), which extends within the housing (1). The deflecting rollers (6, 7) and the guide rollers (8, 9) enable a shifting of the element (5) in the longitudinal direction of the housing opening (3) and with respect to the band (4).

Abstract: A writing instrument of the type having a cylindrical body (1), with a forward end that carries a writing tubule (4) and an inner bore which communicates with the writing tip. A separate sheath body (15) is adapted to be covered by a sheath element (9). The sheath body is pushed onto the rearward end of the cylindrical body (1) and defines a compensating chamber (12, 14) on each of its outer and inner faces. The compensating chambers are connected proximate their rearward ends by a connecting bore (13). The inner compensating chamber (14) communicates with the inner bore through a transverse bore (7) provided in the forward area of the cylindrical body (1). A writing fluid tank (11) is mounted by being pushed onto the rearward end of the cylindrical body (1).

Abstract: A drawing pen exchanging device for transferring a drawing pen between a drawing head (4) and a drawing pen magazine (5) in a computer controlled drawing device. The drawing pen (7) is held against a stationary holding area in the drawing head (4) with the aid of a spring holding element (14) and against a stationary receptacle area (11, 12) in the drawing pen magazine (5) by means of a spring-pressure element (24). Through a sliding cooperation with a guide (25) provided to the side of the stationary holding area (21,22), the holding element (14) is swung out to transfer the drawing pen (7) from the drawing head (4) into the drawing pen magazine (5) and the drawing pen (7) then will be held back by the pressure element (24) in the drawing pen magazine (5). When the drawing pen (7) thereafter is to be removed from the drawing pen magazine (5) the holding element (14) is operable not to engage the guide (25) and thereby will pull the drawing pen (7) from the drawing pen magazine (5) (FIG. 2).

Abstract: In a device for exchanging objects, in particular writing instruments, two substantially identically embodied holders (5, 5') which are open at one side are provided. These holders are movable relative to one another in a plane extending substantially at right angles to there longitudinal axes (12, 12'). The object to be exchanged is held in a receptacle (20), which in cross section has substantially the shape of a regular, convex n-gon having an uneven number of sides. At each corner of the receptacle (20), there is an element of ferromagnetic material (22, 23, 24), and there is a permanent magnet (6, 6') on the inner face, located opposite the open side, of the receiving area of each holder (5, 5'). The receptacle (20) is positionally fixed in a holder (for instance, 5') by means of the aligned position of an element (23) of ferromagnetic material and of a permanent magnet (6', for example).

Abstract: In an automatic drafting apparatus having at least one tubular writing pen (1) held in a drawing head (3), and movable between a rest position, in which the lower end of its tubular writing tip (2) is sealed by a laterally movable sealing element (9), and into a raised intermediate position, in which the element (9) is moved laterally out of the way of the writing tip (2), enabling the writing pen (1) then vertically to be lowered into a drawing position. An improved actuation element (11) means is moved laterally back and forth to move both the tubular writing pen (1) and the sealing element (9). This actuation element further comprises a cam or guide contour surface (13, 14, 15, 16) to engage a pin guide operatively connected to the writing pen, thereby to effect vertical movement of the writing pen (1) and also an oblong lateral recess coupled with the sealing element (9) through a second pin (19), for the purpose of defining a selective lateral displacement of the sealing element.

Abstract: Tubular writing pens of the stylographic type, particularly a felt tip pen. A cylindrical hollow body supports an ink reservoir at one end and a felt tip which extends from the ink reservoir through the front of the hollow body. The tubular body encompasses the writing element, while defining an inner pressure equalization chamber in its outer wall and a longitudinally extending axial groove in its inner wall, exposed throughout its length to the felt tip writing instrument. An intermediate cylindrical piece complementally engages the exterior wall of the cylindrical body, so as to cover the inner pressure equalization chamber and define in its exterior wall an outer pressure equalization chamber, communicant with the inner chamber. An outer sleeve complementally engages the intermediate piece, so as to cover the outer equalization chamber and define at its posterior end a reservoir seat.

Abstract: A lettering device of the type having a keyboard for choosing the symbols to be written, comprising a writing part, which may be separated from said keyboard, wherein the pen is selectively moved by two geared motors, in two coordinate directions, to correspond to the symbols to be drawn. The writing part is adapted to be attached to the symbol head of a drafting machine, wherein two motors, that selectively move the writing pen along cartesian coordinates, are arranged stationary, relative to each other. The writing arm which holds the writing pen is movable, in the one coordinate direction, upon a first movable guide track that itself is movable in the other coordinate direction by a first motor, and also movable in the other coordinate direction upon a second guide track, that is movable in the direction of said one coordinate by a second motor.

Abstract: The invention refers to an improved writing fluid cartridge or writing fluid tank with a connection section at the front end for attachment to a writer, especially a tube writer, wherein the cartridge is divided into at least two sealably separate compartments, one of which having an ink capacity equal to substantially the ink capacity of the writer body.

Abstract: Method of regulating ink flow in automatic drafting pens of the type supporting a plurality of stylographic pens in parallel, including pumping ink from a reservoir into the writing pen capillary tubes, gauging the level of ink intermediate the reservoir and the capillary tubes and modifying said pumping as the gauged, actual level of ink flow may deviate from a desired level of ink flow. The method includes buffering of ink flow into the capillary tubes, so as to overcome the effects of inertia (when the pen is not writing), as well as the surge of ink flow under pumping pressure.

Abstract: A device for cleaning ink pen points of the type which are removable from an ink pen. The device includes an upper section and a lower section complementally engagable with each other, so as to support the pen point in a vertical attitude for sequential attack by cleaning water and drying air. The device includes a jet pump portion actuated by the cleaning water, so as to advance drying air through the pen point. The device is characterized by its mechanical simplicity, yet extreme effectiveness in cleaning artists and stylographic drafting pen points.

Abstract: In capillary writing pens of the type having a scribing point and a replaceable ink cartridge, a method of manufacturing a rupturable sealing element for the cartridge, such that minimal pressure is required to be applied to rupture, while ensuring secure sealing of the ink prior to the use of the cartridge.