Abstract: A device having four engagement points movable along a bore and provided with an optical target or gage adjustable in cross directions normal to the bore axis and a probe mounted for rotation on the gage and engageable with the cylindrical surface of the bore for determining concentricity of the gage and the bore axis.

Abstract: An instrument for determining the alignment of two objects includes a support in the form of a cylindrical body having a longitudinal axis. The support has means on one end for releasably mounting the support in an opening in one of the objects being aligned. The support fits into a recess in a housing which can rotate about the longitudinal axis of the support. A gauge carrier is pivotally mounted on the housing. A gauge is mounted on the gauge carrier and has a finger pivotally mounted thereon and projecting therefrom. The gauge is adapted to detect pivotal movement of the finger. The finger is adapted to contact the other object and as the housing is rotated about the support will pivot toward or away from the longitudinal axis if the other object is not in alignment with the one object. The pivotal movement of the finger is detected by the gauge.

Abstract: An apparatus is disclosed which monitors in a continuous manner the parallel alignment between the shafts of two coupled rotating machines while the machinery is in service. The apparatus consists of a pair of anchors for securing the elements to the machines, a bar slidably mated with the anchors spanning the distance between the machines, gauge holders slidably located on the bar and gauges secured to the holders so that the measuring means is in contact with the hub of each machine. The apparatus allows both horizontal and vertical alignment measurements to be made while the machines are operating.

Abstract: An apparatus for aligning two rotary shafts includes a pair of jigs, each including a pair of othogonally related bars extending from a common vertex. A pair of threaded shafts extend longitudinally from the distal ends of the bars, and a plate secured to the threaded shafts serves to clamp one of the rotary shafts to the orthogonal bars. An arm extending longitudinally from the vertex of the orthogonal bars includes an indicator member extending therefrom, one of the indicator members being adjustably secured along the length thereof. The jigs are each clamped to one of the rotary shafts, rotated into confronting alignment, and the indicator members of both are precisely aligned. The tools are then rotated 180.degree.; any displacement of the indicator members indicates misalignment of the rotating shafts.

Abstract: An alignment apparatus system for aligning coupled shafts, for example between a motor and a driven device, which comprises an alignment fixture, alone and in combination with one or more of an adjustable fixture post or a sag remover. Basically, the alignment fixture comprises an extendable radial arm and a laterally extending arm, which is axial to shaft being aligned, on which a dial indicator is mounted distal to the radial arm. The alignment fixture is mounted to one shaft and the dial indicator contacts the other shaft or a rigid coupling hub mounted thereon and the misalignment is determined and corrected in the usual manner. In some instances, the dial indicator cannot contact the second shaft and the fixture post which extends radially from the second shaft provides the contact point for the dial indicator. In some instances, the laterally extending arm of the fixture is so long that it sags excessively when the vertical alignment is made.

Abstract: A horizontal locator for a rail alignment device engages the sides of the rail head only at points vertically remote from the running surface of the rail whereby deformation of the rail head adjacent the running surface does not adversely affect the accuracy of the locator. A reference surface on the horizontal locator is adapted to engage the running surface of the rail to properly dispose the side-contact members with respect to the rail head.

Abstract: An easily attachable shaft aligning device comprised with a gauge supporting post that will support dial indicators that make contact with the second shaft to be aligned. This indicator holder has a metal base which houses two levers with hooks on their outer ends that receive any selected link of a chain that encircles the shaft to be aligned by screwing the dial indicator support post into the metal base against an inner part of the levers lifting the outer hooked ends of the lever and thereby tightening the chain to said shaft.

Abstract: A tool for holding lines such as are used in guiding paving machines, in earth moving and leveling, and the like, comprising a stake, ordinarily a length of cylindrical metal rod or tubular stock with a ground penetrating point, a line holder of similar, lighter stock and having an offset or angulated end portion to which the line is connected, and a unique clamp for mounting the line holder on the stake with multi-mode adjustment capability.

Abstract: An alignment tool for aligning the pulleys of a belt drive in three planes. The device includes a clamp releasably attached to each pulley which mounts a member extending normally to the face of each pulley. Each member has a universal joint at each end and an adjustable link joins the universal joints. Slidable guides oppositely disposed on each side of the universal joints indicate alignment of the pulleys in two planes when the faces of the guides are parallel. The device may also be used to determine if the pulleys have become angularly misaligned.

Abstract: An alignment indicator clamp apparatus for aligning the working shafts of a motor and a piece of equipment in order to couple them together having shaft engaging members connected by a cable passing through the shaft engaging members and through a cable tightening mechanism and having at least one indicator mounting post.

Abstract: This invention involves an indicator assembly and method for locating the position of the axis of a cylindrical workpiece in a roll turning lathe in order to allow accurate adjustment of the workpiece axis position into alignment with the turning axis of the lathe. The assembly is removably mounted on the tool slide of the lathe for radial movement into engagement with the workpiece, and is constructed to locate the relative position of the workpiece and machine axes in horizontal and vertical coordinates. This apparatus is used in the method to compare the position of the cylindrical surface of the faceplate of the lathe with the position of the surface of the journal of the roll in the horizontal coordinate and to compare the position of the axis of the faceplate with the position of the axis of the journal in the vertical coordinate.

Abstract: A two part tool for aligning a pair of shafts. One tool part has two surfaces at 90 degrees from each other with each surface having a series of parallel lines, and an instrument for measuring distances parallel to an axis of a shaft from both a horizontal and a vertical direction. The second tool part provides for extending two clear parallel lined members to extend over and cover the cooperating lined surfaces on the first tool part and exhibit a Moire fringe pattern if the shafts are not angularly aligned, and an extendable target to cooperate with the instrument for measuring displacement parallel to the axis of the shaft.