Abstract: The present invention relates to a process for fitting a connecting member at one end of a control rod, wherein a sleeve of resistant fibres impregnated with polymerizable resin is applied substantially against the inner wall of the end, the end is flattened at least until the portions of inner face of the sleeve, disposed on either side of the plane of flattening, are applied against one another, substantially completely obturating the section of the flattened portion of the tubular end, and the resin impregnating the sleeve is polymerized after flattening. The invention is more particularly applicable to the obtaining of light, resistant connecting rods, especially for aircraft.

Abstract: An apparatus senses the extent of actual wear of a grinding wheel at an area where the wear will be the greatest during the grinding of a workpiece. The grinding wheel is dressed by removing material from the grinding wheel to an extent which is a function of the extent of sensed wear at the location where the wear is the greatest. The apparatus includes a probe member which is movable toward the circular working surface or side of the grinding wheel from a retracted position and a detector assembly which detects when the probe member initially engages the circular side of the grinding wheel. In some embodiments of the invention, the probe member is moved toward the grinding wheel in incremental steps with sufficient time between the steps to enable the grinding wheel to rotate through slightly more than one complete revolution. In one embodiment of the invention the detector assembly includes a mass which is connected with a probe member.

Abstract: An idler drum mounted for rotation on one end of a swinging arm is arranged to engage opposite sides of a sanding belt and to tension it in opposite directions when the arm is swung oppositely to first and second positions; belt tracking mechanism including spring means acting to tilt the arm laterally in one direction and first and second adjustment screws each positioned and arranged to engage the arm when in one of its first and second positions to adjustably limit the tilting of the arm in the one direction or to adjustably tilt the arm laterally in an opposite direction.

Abstract: A grinding machine wherein a wheel support carrying a grinding wheel is moved along a straight path extending at an acute angle to an axis of rotation of a workpiece. For the subsequent simultaneous grindings of a cylindrical surface and a shoulder side surface perpendicular thereto of the workpiece, the position of a transverse table carrying the workpiece is adjusted in proportion to a designated finish diameter of the cylindrical surface. The position of a sizing device slidable in the axial direction of the workpiece is also adjusted in connection to the positional adjustment of the transverse table, so that a pair of feelers of the sizing device are engaged with the cylindrical surface at a position which is spaced by a designated distance from the shoulder side surface.

Abstract: A device for balancing rotating bodies including a sensing arrangement for sensing the out of balance of the rotating body and for abrasion tool at a frequency corresponding to the speed of the rotating member so as to remove material from the rotating member in phase with the working vibration in the same region of the rotating member for effecting a balancing of the rotating member. The apparatus also includes an adjusting arrangement enabling adjustment of the phase relationship of the vibration of the abrasion tool with respect to the phase relationship of the out-of-balance signal so as to effect shifting by any number of steps of 360.degree./n, n being a whole number>3, irrespective of the speed of the rotating member.

Abstract: A belt grinder for grinding a rotating non-circular work piece includes three rotatable rolls around which an abrasive belt moves. The rolls are arranged in a triangular manner with one of the rolls being the work roll which is slidably mounted toward and away from the workpiece. Resilient means applies a force to urge the work roll in the direction of the workpiece with the force increasing as the work roll moves toward the axis of the workpiece.

Abstract: A barrel apparatus for use in treating workpieces with grinding media, comprising a novel rotary barrel provided on its inner peripheral wall with a spiral flight extending lengthwise of the barrel and one or more ancillary flights extending straight or in an extremely modulated spiral form lengthwise of said barrel and intersecting the spirals of said first spiral flight, thereby accelerating the flow of the contents in the barrel to improve grinding efficiency, and further, permitting smooth delivery of the contents even when a small amount of the contents is present in the barrel.

Abstract: A cutaway pad for surfacing lenses with grinding or polishing slurries which flow into and along the cuts for distribution across a lens surface worked thereover. The heretofore pad floppiness is relieved with a continuous film backing which is readily conformable to a surfacing tool face and affords large area contact to prevent pad slippage during lens surfacing.

Abstract: A resilient disc shaped wheel and supported abrasive belt for grinding glass. A central bore in the wheel provides for mounting to a rotating drive shaft driven by a motor. Circumferentially spaced radially extending slits are disposed incrementally around the entire circumference of the wheel, defining flexible teeth therebetween. The slits are cut only a portion of the way through the wheel leaving a continuous membrane of resilient material tending to hold the teeth in position upon rotation. An abrasive belt is positioned around the outer perimeter of the wheel, and held in place by the centrifugal forces imparted to the teeth.

Abstract: A diamond point type dressing tool is mounted in a control head assembly capable of producing horizontal and vertical movements of the tool either independently or simultaneously to reproduce from a remotely disposed associated template any desired contour of angles and radii on the peripheral edge of a grinding wheel. A tracing rod, snugly but slidably journalled through a fulcrum support, has a tracing end adapted for manual movement over the profile of the template and a control end operatively associated with the control head for reproducing the template profile in the movement of the dressing tool. The fulcrum support is fixed against lateral or vertical movement but has the capability of turning in place as the orientation of the axis of the rod is changed during movement over the profile.

Abstract: A cutting wheel for natural and artificial rock, such as road surfaces of asphalt or concrete, comprises a carrier disk with cutting segments in a regular series around the circumference of the carrier disk. The series is interrupted at spaced intervals, by at least two extra segments which are made of a material harder than that of the cutting segments and are preferably clad with diamond abrasive material. The extra segments are quadrilateral and have their radially inner edge inclined upwardly in the direction of rotation of the cutting wheel. The correspondingly upwardly inclined portion of the cutter wheel provides a base to which the extra segment is soldered. The extra segments have the same width as the cutting segments, which width is greater than the thickness of the body of the cutting wheel.

Abstract: An abrading belt runs on rolls one of which is on a yoke. A cylinder of a fluid actuator is fastened to the yoke and opposite sides of a piston in the cylinder are sequentially pressurized to cause the yoke to angulate back and forth for shifting the belt between lateral limits. A fluidic logic oscillator circuit is controlled by lateral limit sensors to switch the cylinder pressures. A lead screw couples the piston to a nominally fixed threaded element and a splined shaft connects the piston to a reversible motor. A time interval is initiated when the belt changes directions and if it expires before the next lateral limit is reached a signal is developed which causes the motor to shift the piston to thereby change the rocking angle of the yoke in one direction so the lateral travel times of the belt will become equal.

Abstract: A universal crankshaft pin and main bearing finishing machine having one pair of pin and main bearing arms with finishing shoes simultaneously engageable with one pair of pin and main bearings. A programmable controller and encoders automatically monitor drives which position and oscillate the arms over the width of the bearings for each pair of pin and main bearings until all required bearings of the crankshaft are finished. Adjustment and automatic programs are provided for different crankshafts which may vary in length, number of cylinders, stroke, axial location and width of bearings.

Abstract: A rest apparatus for supporting a cylindrical portion of a workpiece to be machined. A pilot shaft is supported at the opposite ends thereof by a support head and provided with a piston portion to form a hydraulic cylinder with a cylinder bore of a rest housing so as to move the rest housing toward and away from the workpiece. The axis of the pilot shaft passes through or slightly above the axis of the workpiece. Rotation of the rest housing about the pilot shaft is prevented. A pair of rest shafts are slidably but nonrotatably received in the rest housing for horizontally and vertically supporting the workpiece by a pair of rest shoes. Feed apparatus is operatively connected to the pair of rest shafts to feed the pair of rest shoes toward the center of the workpiece.

Abstract: A shaping roll for forming a grinding wheel of a longitudinal-feed thread grinding machine used for the manufacture of threads including a conically tapered first thread portion and a cylindrical second thread portion includes a first groove having flank and radius configurations corresponding to the conically tapered first thread portion to be formed, a first cylindrical end surface adjacent the first groove and having a first diameter, a second groove having flank and radius configurations corresponding to the cylindrical thread portion to be formed, and a second cylindrical end surface adjacent the second groove and having a second diameter. The depth of the first groove is less than the depth of the second groove.

Abstract: This invention is that of a variable work holding device to be used for the grinding of various gemstones and industrial diamonds. The design and structure of the device provides that the device may be set up to operate in five different modes and provides that the gemstone may be rotated while in contact with a grinding surface or moved over the face of a grinding surface in a reciprocating motion, or a combination of both rotation and reciprocation which exposes the grain of the stone to the grinding surface from all angles automatically searching out the grain of the stone for optimum cutting efficiency and by continuously moving the stone across the face of the grinding surface, wear is evenly distributed on the grinding surface and grooving of the grinding surface is avoided. The structure comprises a rotatable head for holding the work object. The head is mounted on a slide.

Abstract: A cutting process in which a blade under tension is moved relative to a workpiece. The blade has a longitudinally-extending abrasive-holding portion defined by blade material that is softer than the workpiece to be cut and overlies a high tensile strength core. The abrasive-holding portion defines a cutting surface extending between opposite sides of the blade and defining less than one-half the total outer surface of the blade, and abrasive particles are partially embedded into a longitudinally-extending segment of the cutting surface but not into the sides of the blade.

Abstract: A pad assembly for a vacuum rotary sander has a flexible pad body secured to a rigid head that is connectable to a vacuum housing and a pad rotating means. A plurality of apertures in the head communicate with other apertures in the lower surface of the pad by internal channels which are angled toward the direction of rotation of the pad. The apertures in the lower portion of the pad coincide with apertures in an abrasive disc removably secured to the assembly and may be elongated in the direction opposite to that of rotation so as to allow some slippage of the abrasive disc relative to the pad assembly. There is also disclosed a device for quickly positioning and loading an abrasive disc onto the pad assembly.

Abstract: A clamping or chucking apparatus is provided wherein the cutter blades or cutters, for the grinding thereof, are mounted in a cutter head. The cutter head is rotatable in the clamping apparatus about a cutter head axis, and further, is pivotably arranged for pivotable movement about a pivot axis. To provide a clamping apparatus having compact external dimensions and which, during adjustment of the cutter blades, requires very little freedom of movement room or space, and also possesses a good adjustment accuracy, the pivot axis is inclined and arranged at an acute angle with respect to the cutter head axis, such that the smallest spacing between the pivot axis and the cutter head axis is located externally of the clamping apparatus.

Abstract: A method of grinding the peripheries of articles such as ophthalmic lenses and the like with a grinding wheel to a predetermined outline or edge configuration, is characterized by the steps of detecting the height of discrete positions on the grinding wheel surface between opposite sides thereof and generating signals having values representative of the height of the positions. The values of the signals are compared, and an indication is generated of the position on the grinding surface whereat the signals represent greatest height. The indication is then used to control movement of the article against the highest position on the grinding surface for being ground. In consequence, the wheel wears evenly, it retains a substantially cylindrical shape, all portions of its grinding surface are effectively used in grinding articles, and formation of a groove in its surface is prevented, whereby the wheel does not require retruing or reshaping and its useful life is significantly increased.