Abstract: A tube cutting apparatus includes an inner blade (3), a drive shaft (1), a coupling shaft (2), a planetary gear (5), and a ring gear (6). The outer blade (4) has an inner peripheral surface which contacts an entire circumference of an outer periphery of a work W so as to cover a predetermined axial range of the outer periphery. The drive shaft (1) is rotatably supported inside the work W coaxially with the work W and defines a bore (11) therethrough at a position decentered by a predetermined amount within the drive shaft (1). The coupling shaft (2) is rotatably supported in the bore (11). The inner blade (3) is rotatably retained on an eccentric shaft (22) decentered at a front end portion of the coupling shaft (2) and is positioned inside the work W. The planetary gear (5) is positioned outside the work W and fitted on a rear end portion of the coupling shaft (2) coaxially and meshes with the ring gear (6).

Abstract: A cutting apparatus cuts a lateral wall of a manhole to form a hole on the lateral wall of the manhole. A circular pipe is harmonized with a main pipe and fixedly disposed therein. A rotary ring configured so as to be able to rotate along the periphery of an opening in the manhole about the axial center of the main pipe is mounted on the circular pipe. A pressurized fluid material or pressurized granular material is sprayed from a nozzle held in the rotary ring. The rotary ring is rotated and the lateral wall of the manhole is cut through along the periphery of the opening in the manhole by the fluid material or granular material sprayed from the nozzle. Since the cut portion is shaped as a circle symmetrical about the axial center of the main pipe, it is possible to form a circularly shaped cut-through part centered along the periphery of the opening in the manhole without accidentally breaking or damaging the lateral wall thereof.

Abstract: A tyre cutting apparatus includes a body member defining a mounting formation for mounting to a support structure. A cutting assembly is supported by the body member. The cutting assembly comprises a control member and a cutting unit, for cutting the tyre. The control member effects positional variation of the cutting unit relative to the body member.

Abstract: A piper cutter in the invention comprises a spindle, a fixing disk, a locating seat, a cutting member, a stop member, and two nuts. The locating seat can slide along the spindle to move the cutting member to a location at a level of a required length of a pipe body to be cut, whereby after a socket head of a power drive unit is locked on a fixed head of the spindle, the power drive unit is actuated to rotate the spindle with a lower portion of the spindle moved sideways to make the cutting member follow the rotation of the spindle to cut the pipe body accordingly, thus enabling the piper cutter to be convenient and quick in use; time-saving and labor-saving; adapted to cut pipe bodies with different thickness, bore sizes or length; and, provided with good working efficiency, economical benefits and high utility in industry.

Abstract: A rotary saw having an adjustable depth guide with a handle portion attached thereto is provided. The rotary saw has a housing with a flange projecting outwardly therefrom. The depth guide includes a column with a vertical channel therein. The depth guide is coupled with the housing by slidably receiving the flange in the channel. A transverse bolt in the housing permits a user to prevent movement between the depth guide and the housing and thereby set a cutting depth. A handle portion is removably coupled with the depth guide such that movement between the depth guide and the housing does not alter the relationship between the depth guide and the handle portion.

Abstract: Driving means in particular for a cutting-off device with a rotationally held cutting-off tool. In order to provide the cutting-off tool with high acceleration in a simple manner, a sledge hammer (6) is provided that cooperates with an impact surface (5) arranged on a rotationally held cutting-off tool (4). Furthermore, a cam (2) is arranged on at least one driven rotating inertial body (1) for acting upon said sledge hammer, whereby said inertial body (1) is driven at an essentially constant, optionally adjustable speed.

Abstract: A trimming apparatus and method which may be used in conjunction with an automated tire assembly system which automatically trims the edges of the stabilizer ply member. The apparatus uses a rotary cutter angled with respect to the axis of the stabilizer ply member in order to produce a uniform cut.

Abstract: A pipe cutting tool especially adapted to cut the interior of in-the-hole (I-T-H) drill pipe to allow subsequent removal of the pipe above the cut. Due to blasting damage, long sections of I-T-H pipe, otherwise in good condition, cannot be removed because the damaged section prevents the removal of the entire drill string. The tool is adapted to receive power from an external source and includes a frame, a pivoted motor and cutter, and an actuator for pivoting the motor.

Abstract: An improved tube cutting apparatus and method for cutting through the inside of a metallic tube is disclosed herein. The apparatus generally comprises a support assembly which is slidably insertable within a tube, a flail tube cutting head connected to a short flexible shaft, and a linking shaft rotatably mounted within the support assembly for connecting the short flexible shaft of the cutting head to a longer flexible drive shaft. The center portion of the housing includes a mandrel circumscribed by a selectively expandable resilient bladder for temporarily affixing the support assembly to the inner wall of the tube in order to position the circular blade of the cutting head adjacent to a desired point along the longitudinal axis of the tube. The proximal and distal portions of the linking shaft include coupling assemblies for facilitating blade changes.

Abstract: The invention relates to a process and apparatus for truncating tubes by means of a knife activated by a jack. The knife is mounted on a knife carrier pivotable on a base by one of the ends of a jack the other end of which is journalled on a lever similarly pivotable on the base and which rests in part on an elastic abutment adapted to pivot the lever towards the tube to be cut after having been compressed by the lever during a pivoting of the lever in a direction opposite to the tube and after an interruption of the extension of the jack, with a stop being provided to limit the extent of pivoting of the lever in the direction opposite of the tube to be cut.

Abstract: A knit tape manufacturing device comprising a framework, a driver supported on the framework, a feeding and guiding mechanism composed of a plurality of feeding means which, arranged peripherally, are rotatorily driven on the framework about a longitudinal axis by the driver through a power transmission mechanism and fed under guidance along a longitudinal direction a circular knitted fabric stretched externally therearound, an operating mechanism which operates the feeding means by the driver, and a cutting means for cutting spirally the rotating circular knitted fabric into a tape of width corresponding to the specific feed length which is located adjacent to the forward end of the feeding and guiding mechanism.

Abstract: The frame of the band cutting machine comprises an arm cross consisting of four arms. Each arm supports a fabric feeding roller which is movable back and forth of the arm. The movement of the rollers is carried out by means of threaded spindles extending each through a threaded block supporting a feeding roller. The spindles are interconnected at the center of their arm cross such that a rotating of one spindle by means of e.g. a handwheel will lead to a rotating of the other spindles and accordingly a simultaneous shifting of the fabric feeding rollers along the arms. The location of the upper edge of the circular knitted fabric being cut is scanned by a photoelectric apparatus. The circular cutting knives are supported for a translatory adjusting movement in direction of their center axis. The raising and lowering of these cutting knives is controlled by the output signals of the photoelectric apparatus.

Abstract: A method and an apparatus for packaging paper rolls (2), wherein a wrapper sheet (1) of such a size as to exceed the axial length of the roll is wrapped around the roll and the width of the wrapper sheet is reduced to a size corresponding to the length of the roll by removing the part (5, 6) of the wrapper sheet which extends over the ends of the roll. The header sheet (14, 15) which is bigger than the end surface of the roll, is placed on the ends of the roll and reduced to a size corresponding to the diameter of the roll or smaller by removing at least the part of the header sheet extending over the end surface. Thereafter the header (14, 15) and the wrapper (25) are secured to each other so that a tight joint is formed.

Abstract: A cutting device for the precision trimming of a symmetrical portion of the peripheral edge of a centrifugally cast lens secured within a cavity of a female mold without the need for extensive and complex prior alignment of the cutting tool with the lens.

Abstract: A method and an apparatus are provided for cutting open-flanked V-belts, for example, for use as fan belts in automobiles. Individual V-belts are cut from a vulcanized roll formed from a plurality of layers of rubber and reinforcements. The roll is rotatably disposed on support devices, the support devices being so arranged that at least a portion of the rotation of the roll occurs in straight lines. The belts are cut in the straight line regions. Extremely uniform flank cuts are achieved thereby. The straight line is defined between two rollers, over which the vulcanized roll is forced and becomes tensioned. Cutting devices are moved into and out of the straight line portion of the rotational path of the roll in order to produce the flank cuts.

Abstract: A device for trimming an edge of a tubular article to form a portion of a pantyhose prior to the sewing of a gusset. A support is rotatable about its vertically disposed central axis and cooperates with a mask supported independently of the support and normally stationary. The mask has slots with which trimmers in the form of electrical heating elements cooperate, each of the trimmers being movable independently of the other relative to the mask. The support is rotated relative to the mask and one of the trimmers penetrates and cuts the cloth by heat action and enters one of the slots in the mask so that during continued rotation of the support an edge of the article is trimmed from the remainder by the aforesaid trimmers to remain engaged about the support as an annular band.

Abstract: Irradiated tubular rectangular fuel channels from a nuclear reactor are temporarily stored under water. In order to dispose of these highly radioactive channels and to ship them to permanent burial grounds, the channels must be placed in specially designed shipping casks under water. In order to reduce the volume of the channel so as to economize on the use of the casks, the channels are cut along their longitudinal edges to form four plates which are then nested before being placed in the storage casks, thereby greatly increasing the number of channels which may be stored in each cask. The cutting is done under water by an apparatus having four roller cutters which are positioned along the outside of the four edges or corners of a channel and are moved longitudinally down the channel edges in a reciprocating motion until the four side plates of the channel are severed.

Abstract: A thermoplastic corrugated drainage tube comprising annular peaks and valleys and a plurality of drainage openings internally cut about the circumference of each valley, the openings in each valley aligned with the openings in successive valleys along helical lines described by said openings. The method of forming the drainage openings comprises placing a cutting tool in the interior of the tubing and rotating the tool while moving the tubing axially past the tool. The cutting tool comprises a body having a plurality of radially projecting cutters spaced equidistantly about the cutter body and means for rotating the tool.

Abstract: Apparatus for trimming the end portion of a pneumatic tire carcass ply when the ply is mounted on a carcass building drum includes a cutting tool movable radially with respect to the drum and a backing roller that swings in and out of a position behind the end portion of the carcass ply. The backing roller thus provides a firm back-up for the cutting tool while it is cutting the carcass ply, but the roller can be swung to and out-of-the way position while other operations are performed on the carcass.

Abstract: A band cutting apparatus for cutting a fabric web to produce a web-like article by the agency of a cutting means to which said fabric web is guided. There is provided a guide means including at least one fabric guide means provided with a flattening means for flattening an inwardly directed curl at the edge of said fabric. Said fabric guide means is arranged relative to the direction of advancement of said fabric web ahead of said cutting means.