Abstract: A metal cutting band saw is provided that includes a main carrier, on which an intermediate carrier is pivotally mounted. The saw frame, which can be adjusted in the direction of the workpiece, is mounted on the intermediate carrier by a swivel support or a parallel guide. The swivel support for connecting the main carrier to the intermediate carrier is located above the workpiece to be processed.

Abstract: A sawing machine includes a workbench, a band saw pivotally installed on the workbench, a weight movable between an idle position on the workbench and a working position on the band saw and an adjustable torque provider for providing an adjustable torque to the band saw. The adjustable torque is set to a maximum when the weight is in the idle position in order to lift the band saw from the workbench. The adjustable torque is set to a minimum when the weight is in the working position in order to lower the band saw toward the workbench.

Abstract: A metal frame having at least one wheel attached in a way that permits the frame to be moved from one location to another. Attached to the frame is a chain saw that can be used in more than one cutting position using remote controls attached to the metal frame and controlled by the operator. The operator controls the saw's cutting position either vertically or horizontally with a tension rope that moves the saw to the desired cutting position. The saw's throttle is controlled by a flexible cable attached to a throttle assembly at the saw and a handle attached to the right side of the metal frame allowing the operator to control the cutting speed of the chain saw from high rpm to idle speed.

Abstract: A band saw with a complex coordination of a tilting motion and a translational motion between the workpiece and the band saw blade, so that a curved cut is made in the workpiece. The geometric parameters of the cut can be continuously adjusted. This makes it possible to optimize a contact length of the saw blade in the workpiece, which is an important factor in the cutting process. It is thus possible to saw workpieces made of stone and similar materials that are typically difficult to cut. The cut and the contact length of the saw blade can be tailored individually to each workpiece to be sawed. Thus, workpieces of different geometrical dimensions and different material properties, in particular with different material hardnesses, can be processed using the band saw according to the invention without having to undertake significant changes.

Abstract: A mechanism for varying the position of a band saw blade in a tilting frame band saw. The mechanism includes an actuator, a tilt arm and a tilting frame. The actuator is pivotably connected to a support, and the tilt arm is pivotably connected to both the tilting frame and the actuator. The actuator is connected to the tilt arm such that the angular movement of the frame, which results from extension and retraction of the actuator, bears a substantially linear relationship to the stroke of the actuator. The mechanism of the present invention enables the frame to be made with an exceptionally wide sweep, and may be controlled by a proportional hydraulic valve controlled on the basis of location data provided by an encoder mounted within the tilting frame.

Abstract: An underwater apparatus for servicing subsea pipelines provides a telescoping frame which can be lowered to the vicinity of the pipeline. The frame has an open section so that it can straddle the pipeline and outer jacket and fixate itself releasably so that it can be selectively repositioned. A cutting apparatus is secured to a telescoping sub frame. The cutting structure can be rotated about the longitudinal axis of the sub frame, as well as advanced along the direction of the longitudinal axis of the frame due to the telescoping feature of the sub frame. The cutting structure can also be moved pivotally about an axis of rotation which is outside and generally perpendicular to the longitudinal axis of the pipe. Thus, combining the telescoping feature with the pivoting feature and the feature of being able to rotate about the longitudinal axis, a variety of different cuts can be made.

Abstract: A method and bandsaw apparatus (30) which facilitates maintenance access to a continuous loop bandsaw blade (43) rotatably mounted thereon. The bandsaw apparatus (30) includes a base frame (31) and a cutting table (32) supported on top of the frame (31) to provide a cutting surface (33). A saw carriage assembly (37) is provided including a saw arm assembly (37) rotatably supporting the saw blade (43) which extends through a blade receiving slot (34) in the table (32). A support frame (42) movably mounted to a guide assembly (44) enables selective reciprocating movement of the saw arm assembly (40) relative the cutting table (32) so that the blade (43) can move along the receiving slot (34). A coupling device (45) of the carriage assembly (37) movably couples the saw arm assembly (40) to the support frame (42) for movement of the saw arm assembly (40) between a cutting position and a maintenance access position.

Abstract: A compound miter jig apparatus includes a base unit and a plurality of connectors for connecting the base unit to an article to be cut. A pair of pivot support assemblies arc connected to the base unit. The pivot support assemblies are spaced apart from each other on the base unit and include longitudinally adjustable first pivot elements. A bearing block assembly is supported by the first pivot elements and is located between the first pivot elements. The bearing block assembly includes a pair of second pivot elements in contact with the first pivot elements. The bearing block assembly also includes a shaft bearing assembly. A shaft assembly is supported by the shaft bearing assembly. The shaft assembly includes a chain-saw-connector assembly. An adjustable tilt-lock assembly is supported by the base unit and is connected to the bearing block assembly for locking the bearing block assembly at a predetermined angular tilt.

Abstract: A method and bandsaw apparatus (30) which facilitates maintenance access to a continuous loop bandsaw blade (43) rotatably mounted thereon. The bandsaw apparatus (30) includes a base frame (31) and a cutting table (32) supported on top of the frame (31) to provide a cutting surface (33). A saw carriage assembly (37) is provided including a saw arm assembly (37) rotatably supporting the saw blade (43) which extends through a blade receiving slot (34) in the table (32). A support frame (42) movably mounted to a guide assembly (44) enables selective reciprocating movement of the saw arm assembly (40) relative the cutting table (32) so that the blade (43) can move along the receiving slot (34). A coupling device (45) of the carriage assembly (37) movably couples the saw arm assembly (40) to the support frame (42) for movement of the saw arm assembly (40) between a cutting position and a maintenance access position.

Abstract: An adjustable tool supporting device for use in log and timber construction having a U-shaped frame member; a microadjustment assembly mounted to the frame member and coactive therewith to secure a timber or log therebetween; and a chain saw mounting assembly attachable to said frame member for mounting a chain saw for cutting the timber or log secured thereby and locating the saw blade for straight and angular cuts through said timer or log.

Abstract: A device for anchoring a chain saw machine to a workpiece to produce selected mitered cuts through the workpiece, the device including; a base member presenting clamping structure at one end thereof for clamping the base to to workpiece; and structure rotatable about a first and second axis presented at the other end, the rotatable structure including structure for releasably securing the chain saw machine thereto for selective rotation of the chain saw machine about the first axis for selecting the degree of mitered cut to said workpiece, and for rotation of the chain saw machine about the second axis for transversally cutting through the workpiece at the selected degree of mitered cut.

Abstract: The chain saw wood cutting apparatus disclosed is used for supporting a chain saw so that it may easily be swung by its handle between raised and lowered positions, for the purpose of cutting a log supported beneath into stove length sections.

Abstract: A band saw machine which comprises a generally elongated frame structure including an endless band saw trained between and adapted to travel over a pair of spaced guide wheels and having cutting and return reaches therebetween, a positioning mechanism for fixedly supporting a stock to be cut, and a rocking mechanism including a pair of spaced reciprocating drives for rocking the endless band saw through a predetermined angle in the opposite directions generally about the stock to be cut, with the opposite ends of the frame structure alternately upwardly and downwardly shifted. The frame structure is supported for movement relative to the positioning mechanism between inoperative and cutting positions in a direction generally perpendicular to the stock. The rocking mechanism is operable at least during the cutting operation performed by the cutting reach of the endless band saw.

Abstract: A method of cutting logs which involves swinging a chain saw about a fixed pivot to bring the chain of the saw into cutting engagement with a log while the log is supported in an elevated position and restrained from lateral movement; together with an apparatus therefor which includes a table having a trough shaped log supporting top, and provided with a pivoted and adjustable mounting plate for the chain saw.

Abstract: A band saw machine is provided with a cutting head that carries the endless saw blade. The cutting head can be swung from a vertical cutting plane into a horizontal cutting plane. Limits can be made in the feeding stroke of the cut and the return travel. A workpiece feeding and clamping vice is rotated about a horizontal axis. The combined positioning capability of the band saw blade and the workpiece vice allows difficult compound angular cuts to be made in the workpiece. The endless run of the blade is angled upwardly and outwardly away from the workpiece to provide additional clearance for cutting deep workpieces. Powered feed rolls advance the workpiece against a gauging stop to determine a predetermined length to be cut. The vice is then closed to hold the workpiece during cutting. Supplemental supports hold the rearward end of the workpiece during feeding and cutting. Blade guides are spaced for accomodating both small and large width blades.

Abstract: Apparatus for sawing which can be used either in portable, manually operated form, or as a stationary bench-mounted sawing device for sawing through a workpiece along predetermined angles of cut. The apparatus comprises a portable chain saw which includes a prime mover secured to one side of a flat mounting plate. A saw blade guide plate projects from the prime mover through a slot provided in the mounting plate, and in a plane substantially normal to the plane of the mounting plate. A saw blade is extended around, and guided by, the guide plate, and is protected by guard means pivotally mounted on the mounting plate. A cradle frame structure releasably receives and clamps the mounting plate in a table sawing position when the chain saw is to be so used. A cradle frame pedestal pivotally supports the cradle frame structure for pivotation about a horizontal axis.

Abstract: A cutter that can be mounted to a workpiece for cutting a cope at a prescribed arc at a selected radius and angle. A support frame mounts a band saw for pivotal movement about a first axis, parallel to the saws cutting flight. The support frame is mounted to a central workpiece clamp for pivotal movement about a second axis that is parallel to the first. The clamp secures the workpiece to the support frame, centered on a plane parallel to the first axis. The saw blade can thus be swung through an arc representing the outside diameter of a second workpiece that is to intersect at a prescribed angle with the clamped workpiece.

Abstract: A portable sawmill includes a log supporting mechanism for holding a substantially horizontal log. A chain saw with a substantially horizontal effective cutting edge at least as long as the log is supported at only one end by a saw mounting assembly with the cutting edge generally parallel to the axis of the log. The saw mounting assembly is adapted for lateral movement relative to the log, as well as upward and downward movement, so that the saw can be positioned beneath a portion of the log and moved upwardly through the log to cut wood slabs. The saw is pivoted to the saw mounting assembly so that the angle between the effective cutting edge and the axis of the log can be adjusted to produce elongated wood fibers during cutting. A pivoting mechanism is provided for rotating the log between cuts so that slabs tapered from one side to the other can be cut.

Abstract: A band saw machine is provided with a cutting head that carries the endless saw blade. The cutting head can be swung from a vertical cutting plane into a horizontal cutting plane. Limits can be made in the feeding stroke of the cut and the return travel. A workpiece feeding and clamping vice is rotated about a horizontal axis. The combined positioning capability of the band saw blade and the workpiece vice allows difficult compound angular cuts to be made in the workpiece. The endless run of the blade is angled upwardly and outwardly away from the workpiece to provide additional clearance for cutting deep workpieces. Powered feed rolls advance the workpiece against a gauging stop to determine a predetermined length to be cut. The vice is then closed to hold the workpiece during cutting. Supplemental supports hold the rearward end of the workpiece during feeding and cutting. Blade guides are spaced for accomodating both small and large width blades.

Abstract: Apparatus for sawing which can be used either in portable, manually operated form, or as a stationary bench-mounted sawing device for sawing through a workpiece along predetermined angles of cut. The apparatus comprises a portable chain saw which includes a prime mover secured to one side of a flat mounting plate. A saw blade guide plate projects from the prime mover through a slot provided in the mounting plate, and in a plane substantially normal to the plane of the mounting plate. A saw blade is extended around, and guided by, the guide plate, and is protected by guard means pivotally mounted on the mounting plate. A cradle frame structure releasably receives and clamps the mounting plate in a table sawing position when the chain saw is to be so used. A cradle frame pedestal pivotally supports the cradle frame structure for pivotation about a horizontal axis.

Abstract: Support apparatus for supporting logs, boards and other work pieces to be cut either transversely or lengthwise, as well as for supporting a chain saw by its blade for performing the cutting. A support platform includes a top surface, preferably inclined downwardly toward an operator position, and a restraining rail to hold the work pieces in position for cutting. A spring-biased, rotatable axle mounts the chain saw by the free end of its blade for pivotal movement along one side of the platform to transversely cut work pieces. Alternately, a rigid saw support holds a chain saw vertically upright with its blade plane parallel to the direction of elongation of the work pieces for rip cutting. An outwardly extending, side support, opposite the saw support, movably mounts a second platform for additional support and movement of long logs, boards or other work pieces.