Abstract: A conduit level for use in bending electrical conduit includes a generally F-shape rigid frame having a base member and a pair of legs and a clamping screw protruding through one of the legs for connecting the frame to an open end of a conduit. A bubble level is housed within a bottom end portion of the base member so that, when the apparatus is connected to the conduit, the bubble level is laterally spaced apart from the open end of the conduit to bring it into view of an operator from an operator's position alongside the conduit for leveling the conduit. A housing is integrally formed in the bottom end portion to substantially surround the bubble level to protect it from impact. The housing includes windows on four sides to allow viewing the bubble level from the operator's position after a bend is formed in the conduit.

Abstract: Portable manually-controlled pipe-bending machine designed for operation at three different speeds, consisting of a boxlike main body, which in its simplest form contains two gear assemblies i.e.: a speed reducer with cooperating gears mounted on three parallel axes, corresponding to three different speeds which are obtained by fitting a conventional handle or any other appropriate structure into a socket driving a gear shaft, and thus making the reduction gear rotate at the desired speed; and a transmission mechanism which is connected with the output gear of the speed reducer and which transmits to a gear train up to the final gear to turn the main driving shaft integral with it and mounting the bending member or matrix.

Abstract: The invention comprises an improved pipe bender for accommodating multiple pipes of varying diameters and sidewall thicknesses and bending sections of them into an arcuate form without deforming or collapsing the sidewalls of the pipe. The pipe bender comprises a mounting base; an axle supported by the mounting base and having end portions that protrude from respective opposite sides of the mounting base; two sheave blocks having arcuate pipe receiving channels, one such sheave block mounted on each protruding end portion of the axle for rotation about the axis of the axle; first and second pipe engaging mechanisms for engaging and holding pipe; and a device for rotating the sheave blocks about the axis of the axle so that a pipe positioned in a pipe receiving channel is bent into an arcuate form corresponding to that of the respective pipe receiving channel.

Abstract: A tube bender for making accurate offsets and saddles in electrical conduit wherein a first tube-bending anvil is adapted to be positioned flat against a mounting plate at various specified distances above a flat work surface, the distance of the offset or saddle, the plate and anvil being supported vertically above the surface on legs extending outward from the plate, the anvil used in cooperation with a second, hand-held tube-bending anvil, wherein a bendable tube supported therebetween can be formed into an offset with one downward motion applied to the second anvil for displacing the electrical conduit the distance of the offset and wherein a saddle may be formed by doubling an offset.

Abstract: A tube bender having a swivel connection of the handle to the shoe for facilitating readjustment of the handle in providing tube bends of greater than 90.degree., while avoiding crossover of the tube handle with the mandrel handle. The shoe handle includes a cylindrical extension rotatably received in a socket in the shoe and structure is provided for automatically disposing the handle in either of preselected dispositions. The extension is caused to be disposed in an overcenter arrangement in the preselected dispositions so as to cause forces generated on the shoe handle during the bending operation to more firmly lock the handle in the preselected disposition. A friction washer is provided for biasing the shoe handle to provide releasable retention thereof in the preselected positions.

Abstract: A tube bender has two readily connectable and detachable members. A base member has a block with two parallel grooves. The tube groove is formed in an arc having the radius of the desired bend and a cross-section with a radius corresponding to the tube diameter. The second groove has straight sides and an arc similar to the tube groove. Pivotally mounted on the base member adjacent the block is a retainer. In its first position a radius therein clamps the tube in the tube groove. In its second position, a fork fits over the conventional ferrule of a connector fitting. The block is notched opposite the retainer to receive the outer end of the fork and a connector nut. The forming member has a crescent-shaped end of a radius complementary to the second groove so that the crescent may fit snugly in the second groove. A forming block on the forming member engages the outside of the tube and causes it to conform to the shape of the groove. For manual operation, the two members have diverging handles.

Abstract: A hand operated bending tool for forming a clean bend in a venetian blind slat includes a generally U-shaped upward-opening bottom member having a width which exceeds the width of the slat to be bent and having a length proportioned to receive one leg of a slat therein. The bottom member has a low friction curved portion leading into the interior of the member, permitting the slat to roll thereover during the bending operation. An elastomer portion in the bottom member, adjacent the forward end, defines a resilient slat-gripping surface to engage the slat legs and prevent sliding movement of the leg in the channel member during bending. A U-shaped, downwardly-opening top member is received within the bottom member, the top member having a remote end pivotally attached to the bottom member for movement between a raised position to a lowered position in which the upper top member is substantially nested within the bottom member. A slat leg therein is pressed against the gripping surface.

Abstract: The conduit bending tool of this invention has on its body a pair of pads which are spaced apart in the direction lengthwise of the arcuate bending shoe and which define recesses that open to one side of the body wherein end portions of a straight cylindrical spirit level vial are closely receivable. Cement on a surface of each recess that embraces the vial partway around it secures the vial in place. The pads and recesses are defined by one of the two main mold elements that form the body, which have their parting place on a plane of symmetry in the body, and the vial is installed by simply inserting it into the recesses.

Abstract: Inprovement in a golf club straightening device for straightening golf club irons, the device having a base, an arrangement for clamping the head of the golf club iron, an arrangement for examining the loft of the golf club iron, and an arrangement for examining the lie of the golf club iron, the improvement comprising an arcuate loft arm mounted stationary in respect to the base and upstanding therefrom, a swingarm mechanism comprising a pivot support stationary in respect to the base and upstanding therefrom and including a bifurcated swingarm pivotally mounted on the pivot support, upper and lower clamps moveably carried on the bifurcated swingarm for clamping the head of a golf club iron so that the front face thereof is flat against the rear face of the bifurcated swingarm, the swingarm being pivotally moveable in respect to the arcuate loft arm and being capable of being made fast in respect thereto by being clamped thereagainst, the arcuate loft arm having an angular scale thereon for determining the l

Abstract: A tube bending tool for bending tubing, such as electrical metal tubing or plumbing tubing, signals the user by an indicator such as a audible signalling device when the tubing has been bent to a predetermined angle. The tool includes a bending anvil with a tube receiving area such as a tube receiving groove which receives the tube as it is bent, the greater the length of tube received by the groove the greater the degree of bend in the tube. A plurality of sensors such as switches are spaced along the tube receiving area so that as the tube is received by predetermined locations along the tube receiving area, a sensor changes state. A selector switch is coupled to an indicator and power source so that when a selected sensor changes state, indicating a predetermined degree of tube bend has been obtained, the indicator is activated.

Abstract: A hand operated bending tool for bending convoluted tubes, pipes, and other tubular material, with the tool providing a tool handle socket and a flexible tube gripping band that, upon initial movement of the tool, will grip and secure the free end of the tube to the bending shoe of the tool.

Abstract: A tube bender comprising a body having an upwardly opening hook at a front end thereof and having a bottom surface defined by a convexly arcuate bending shoe extending rearwardly from the hook has movable indicators, one for each of a plurality of bend angles, each of which rises to a signalling position when a tube being bent attains its bend angle. Each indicator has a pin-like shank slidable in a bore in the body that opens to the bottom surface near the vertical plane of symmetry of the shoe and at a location where a tube being bent contacts that surface upon attaining the bend angle for the indicator. A head on the indicator normally rests on an upwardly facing surface on the body to which the bore opens upwardly, with the shank projecting below said bottom surface. The head comes flush with an upwardly facing signalling surface on the body when the bend angle is attained.

Abstract: A tool for bending conduit comprises a body that has a bottom shoe portion which is curved along its length and in which there is a downwardly opening groove that is symmetrical across its width to a plane of symmetry, a tubular handle supporting socket projecting up from the shoe with its axis in said plane, and a hook portion in front of the shoe. Integral ridges on the body define sighting lines contained in a plane parallel to said plane of symmetry, each such line designating attainment of a predetermined bend angle when it is perpendicular to a supporting surface. The ridges define upper line segments on the socket that diverge downwardly from a point on the axis about which the shoe is lengthwise curved and lower line segments on the shoe that are lengthwise aligned with respective upper line segments.

Abstract: A device for indicating the angular movement of a tube bender and the like is disclosed comprising a plate assembly having an alignment groove for attaching, in desired position, the plate to the elongated handle of the tube bender, and wherein the plate assembly has an arcuate spirit level with an angular movement position indicator air bubble inside and has angle marked surface adjacent the arcuate spirit level.

Abstract: A tube bender construction for manual operation in bending a tube. The tube bender includes a mandrel defining a bending groove into which the tube is urged by a forming member mounted to the mandrel to swing about a bending axis of the bending groove. The tube to be bent is held against longitudinal movement during the bending operation by a tube holding member. Movement of the forming member about the bending axis is effected by manipulation of a pair of handles. The tube holding member is selectively retained in a retracted position spaced from the tube-retaining disposition by cooperating movement limiting structure on the tube holding member and structure in fixed association with the mandrel.

Abstract: A tube bender construction for manual operation in bending a tube. The tube bender includes a mandrel defining a bending groove into which the tube is urged by a forming member mounted to the mandrel to swing about a bending axis of the bending groove. The tube to be bent is held against longitudinal movement during the bending operation by tube holding structure arranged to clamp the tube against an extended groove portion of the mandrel. Movement of the forming member about the bending axis is effected by manipulation of a pair of handles. Indicia are provided on the mandrel and forming member for indicating the angular extent of a bend provided in the tube as a result of the swinging movement of the forming member about the bending axis. At least one of the first and second indicia are adjustably mounted to provide accurate correlation between the indicia in indicating the bend angular extent.

Abstract: A bending device for metal pipe with and without plastic jacketing has a short cylindrical segment including a circumferential groove which determines the bending radius of the pipe to be bent and a support for holding the pipe to be bent tangentially with respect to the groove. A lever is mounted for concentric pivotable movement about the segment and a pressing block is mounted on the lever for pivotal movement about an axis parallel to the segment axis. The pressing block has a working surface which has an approximately semicircular, concave cross section in a plane disposed parallel to the pivot axis of the pressing block and the segment axis and a concave cross section in a plane disposed perpendicular to those axes.

Abstract: A pipe-bending tool which includes a pipe-bending head mounted on a handle assembly having an adjustable gauge arm which allows an operator of the tool to accurately bend a pipe or hollow conduit to a desired bending angle. The gauge arm projects from the handle and terminates in a stop member which can be positioned at a plurality of preset locations along the handle where it contacts the pipe during bending and prevents it from bending beyond the angle desired.

Abstract: An improved conduit bender of the type having a curved rocker base portion formed by a pair of laterally spaced, arcuate-shaped side walls which define longitudinally extending conduit-receiving groove means therebetween. A hook formation is formed at one end of the base portion and a treadle member is formed at the opposite end. The improvement includes the formation of two pairs of curved surface sections on the inner surfaces of the side walls which form a pair of vertically spaced overlapping conduit-receiving grooves therebetween to enable the improved bender to be used for forming bends in the four types of electrical conduits presently used in the building industry. The inner groove is used to bend the single type of thin-wall conduit (EMT) and the outer groove is used to bend the three types of rigid or heavy-wall conduits. The starting and ending points of the arcuate bending surfaces of the two grooves are offset 15.degree.

Abstract: A device that enables selective angular positioning of the handle of a conduit bender. The device includes two opposed mounting members having serrated surfaces. They are releasably joined so that one may be selectively pivoted about an axis relative to the other. One member is operatively connected to a conduit bender handle while the other member is connected to the rigid body of the conduit bender. An offset provision is made between the handle and an adjacent mounting member. The handle can therefore be removed and located adjacent either side of the rigid body while remaining pivotal in a 360.degree. arc about the axis. A threaded member may be tightened to lock the members together.

Abstract: A tool for bending metal wire hangers such as those used for hanging false ceilings below exposed under floor structures of the type separating successive floors in modern multiple story commercial buildings and in other buildings where a lowered ceiling is desired. The wire bending tool includes a pair of operating handles connected to a gripping jaw having members for holding a wire to be bent. The gripping jaw forms part of a rectangular block to which a third handle is pivotally mounted. The third handle is associated with a roller which cooperates with two corners of the block to bend the wire into two successive right angles as a third handle is pivoted about its axial connection on the rectangular block.

Abstract: An improvement in a pipe bending device to predetermine the offset distance without removing the pipe from the bender. An adhesive tape with incremental markings thereon is applied on the handle of the pipe bender in a manner so that a sight line intersects the handle at the incremental mark indicating the amount of offset desired after the first bend is made.

Abstract: A pipe bending tool has two indicators one at the upper surface between the shank and the bending finger and calibrated to determine the bending required for a given dimensional offset and the curved anvil bending surface for the tool also has calibration so that with the tool stationary the pipe can be bent around the curved anvil surface until the correct bending is effected for a given dimensional offset.

Abstract: A hand bender tool for bending tubes, pipes, conduits and other tubular material, and which is provided with raised indicators on a bending shoe and handle socket that coact with a conical sighting indicator disposed in a position above the shoe, to allow an operator to accurately bend a pipe to a desired angle of bend. A contoured foot treadle is provided with serrations which prevent slippage of the foot of an operator during a bending operation, so as to permit the operator to employ leg power to the fullest advantage.