Abstract: The invention relates to an apparatus and a method for dosing a lubricant into compressed-air supplied to an air motor. According to the invention, the lubricant is stored in a lubricant storage space (17) from which the lubricant is led, along a lubricant line (19), to a doser (20). The doser (20) doses the lubricant into a dosing line and, therefrom, into a compressed-air line (12) extending to the air motor. The amount of lubricant contained in the storage space (17) is controlled by changing the volume of the storage space (17) by directing the pressure of the compressed-air line (12) to the lubricant storage space (17).

Abstract: The oscillation cylinder arrangement (100) comprises a working cylinder (10A) and a piston with a rod (27A), arranged to move therein, and a control valve structure (20) for the working cylinder (10A). The control valve structure (20) incorporates a main valve (24) for transmitting a pressure medium to a first sub-chamber or a second sub-chamber of the working cylinder (10A) for a linear movement (A, B) of the piston, as well as impulse valves (22, 23), and lever arms (25, 26) for controlling them, in order to set the operational state of the main valve (24). Control members (27B) fixed to the piston rod (27A) moving in the working cylinder (10A), the control members (27B) being arranged to contact the lever arms (25, 26) of the impulse valves in order to define the extreme positions of the movement of the piston rod (27A).

Abstract: The invention relates to an apparatus and a method for dosing a lubricant into compressed-air supplied to an air motor. According to the invention, the lubricant is stored in a lubricant storage space (17) from which the lubricant is led, along a lubricant line (19), to a doser (20). The doser (20) doses the lubricant into a dosing line and, therefrom, into a compressed-air line (12) extending to the air motor. The amount of lubricant contained in the storage space (17) is controlled by changing the volume of the storage space (17) by directing the pressure of the compressed-air line (12) to the lubricant storage space (17).

Abstract: The oscillation cylinder arrangement (100) comprises a working cylinder (10A) and a piston with a rod (27A), arranged to move therein, and a control valve structure (20) for the working cylinder (10A). The control valve structure (20) incorporates a main valve (24) for transmitting a pressure medium to a first sub-chamber or a second sub-chamber of the working cylinder (10A) for a linear movement (A, B) of the piston, as well as impulse valves (22, 23), and lever arms (25, 26) for controlling them, in order to set the operational state of the main valve (24). Control members (27B) fixed to the piston rod (27A) moving in the working cylinder (10A), the control members (27B) being arranged to contact the lever arms (25, 26) of the impulse valves in order to define the extreme positions of the movement of the piston rod (27A).

Abstract: A suction valve for a pipe line in which a medium flows is provided, whereby the flow can be closed and regulated and whereby back flow prevented. The suction valve includes a movable a closing mechanism (3) placed in a valve house (1), and an opposed counter face in the valve house. The closing mechanism (3) can be moved by the pressure of the medium flow by forming the closing mechanism (3) to be as piston parts or cylinder parts in a working cylinder. The pressure of the medium flow used for moving the closing mechanism (3) is led into the closing mechanism through an outlet valve (8,9,10), which outlet valve is fitted inside the closing mechanism (3).

Abstract: An arm structure intended for controlling the impulse valve (5) of the oscillating cylinder which performs a back and forth movement whereupon the oscillating cylinder comprises a cylinder body (14), a cylinder chamber (1) formed into the mentioned body, a piston (2) which can be moved in the cylinder chamber with the help of a pressure media, feeding channels (15, 16, 17) of the pressure media to the cylinder chamber (1) and control devices in order to direct the pressure media to the cylinder chamber to various sides of the piston and away from the cylinder chamber in order to achieve a back and forth movement for the piston and whereupon the impulse valves (5) belong to the control devices the operation of which at least one arm (10); (12), which explores mechanically the position of the piston arm (7) the movement of which arm is adjusted to open the pressure relieving channel of the impulse valve (5).

Abstract: An arrangement in combination with an oscillating cylinder (1), whereby the arrangement includes a working valve (10) of cylinder (1) to transmit pressure medium into cylinder (1), impulse valves (5) by means of which, by working valve is controlled, control means (4), as discs, from movable piston rod (18) to cylinder (1) outside, which can be arranged to get in several different linear positions in contact with the control means impulse valves (5) in order to produce a stroke length set for the piston rod of the oscillation cylinder. In the arrangement the impulse valves are placed sideways outside control means (4) and the required impact to be achieved from the control means (to the impulse valves (5) is moved by means of special arms (13) moved from control means (4) as an opening/closing motion of the shut-off part of the impulse valves whereby the structural length of the oscillating cylinder can be achieved essentially shorter in the cylinder back end of control means (4), (5).

Abstract: A suction valve be placed in a pipe line and intended for flow material, by means of which the flow can be closed, regulated and back flow prevented, whereby the suction valve comprises a movable a locking means (3) placed in a valve house (1) and for it a counter face in the valve house and said locking means (3) can be moved by means of the pressure of the flow material by forming locking means (3) to be as piston parts or cylinder parts in the working cylinder The pressure of flow material necessary for moving locking means (3) is led into said locking means through an outlet valve (8,9, 10), which outlet valve is fitted inside the locking means (3).

Abstract: An o-ring seal (2) between sliding surfaces, such as a cylinder (8) and a piston (3), which is installed in an especial groove fitted for the seal, which groove is machined either in the cylinder surface or the piston surface. In order to reduce the friction between the sliding surfaces caused by the seal (2), the seal is as to its structure a broken ring, whereat it is fitted to move in the groove without pre-compression.

Abstract: An arrangement in combination with an oscillating cylinder (1), whereby the arrangement includes a working valve (10) of cylinder (1) to transmit pressure medium into cylinder (1), impulse valves (5) by means of which, by working valve is controlled, control means (4), as discs, from movable piston rod (18) to cylinder (1) outside, which can be arranged to get in several different linear positions in contact with the control means impulse valves (5) in order to produce a stroke length set for the piston rod of the oscillation cylinder In the arrangement the impulse valves are placed sideways outside control means (4) and the required impact to be achieved from the control means (to the impulse valves (5) is moved by means of special arms (13) moved from control means (4) as an opening/closing motion of the shut-off part of the impulse valves whereby the structural length of the oscillating cylinder can be achieved essentially shorter in the cylinder back end of control means (4), (5).

Abstract: An automated collar-forming drill mechanism, having the bottom end of its rotatable drive shaft (1) fitted with a tool head (2), which is driven axially back and forth by means of a piston-cylinder assembly (5-9), the drive shaft (1) extending through its piston rod (9). The axially directed operations of the tool head (2) are effected by means of a pneumatic part of the piston-cylinder assembly and a limitation to the speed of working operations is effected by means of a hydraulic part of the piston-cylinder assembly. The operating speeds upwards and downwards, as well as the reversing points for operating speeds and direction, are adjustable.

Abstract: A control system of a pneumatic oscillation cylinder (1) to produce the oscillating motion of a scraper (3) used in paper machines in particular. There is in the oscillation cylinder motion rod (18) motion stoppers (4), which in both wanted reversing points of the rod (18) motion open an own pressure discharge valve (5) for the said stopper in the pilot operation line (9), whereby the opening of both pressure discharge valves (5) in turns causes a reversing function in a pneumatic reversing valve (10) known as such.