Abstract: The unlatch assembly employs a reciprocating carriage to engage and pull a product-carrying mat entering into the ascending elevator away from the main conveyor. The carriage is reciprocated in a path under the elevator and disengages when the mat is fully within the elevator. The carriage drive employs a single chain to avoid skewing of the carriage.

Abstract: A cutting insert (10) is adapted to be clamped against a tool body (14) through a first side surface (12). Grooves (21) are provided in a second side surface (11) opposed to said first side surface for providing a serrated cutting edge (16). The grooves (21) are designed such that inclination of the cutting inserts is made possible.

Abstract: To set the proper location of a cutting bit, an optical scanner directs an optical beam toward a screen. The scanner is mounted on a base frame. The cutting bit is mounted on a cutting head holder which is, in turn, mounted on a support stage, the latter being vertically adjustable on the base frame. The cutting head holder is adjustable relative to the support stage and the measuring point. The support stage carries three support bodies for the rear side of the cutter head holder.

Abstract: The present invention relates to a cutting tool for milling, boring or turning, comprising a holder shank (10) with a slotted end and a blade (13) clamped in the slotted end of the holder shank (10) by means of a clamping screw (16) which loosely extends through the blade (13). The blade (13) is provided with a recess (22) having radially displaced abutment surfaces (24A,24B) that are to abut outer edges (21A,21B) of the slot so as to radially center blade (13) in the slot (17) when tightening the screw (16). Furthermore, the invention relates to a blade (13) for use in connection with the above-mentioned holder shank (10).

Abstract: The present invention relates to an improved rotary drill bit having a bit body with at least one bearing pin attached thereto for rotatably carrying a roller cutter over a bearing system. The bearing system includes at least a forward bearing and a rear bearing with at least one inflow passage provided in the bit body for supplying fluid through the passage to the rear bearing during operation of the bit for flushing and for cooling of the rear bearing. The passage terminates in the bearing system ahead of a forward end of the rear bearing between an intermediate sealing arrangement and an annular outlet gap provided between the bit body and the roller cutter. The bearing pin includes a flange for axially fixing a forward end of the rear roller bearings with the inflow passage preferably terminating on the periphery of the flange. The sealing arrangement preferably engages a forward radial surface of the flange on the bearing pin.

Abstract: A conveyor is driven in a helical endless fashion within a horizontally annular baking chamber while carrying products to be baked. The air within the chamber is heated by means of burners disposed beneath the conveyor and in non-parallel relationship thereto. Heated air is drawn through an air permeable cover across the top of the chamber and into an upper air space thereabove. The air is circulated from that upper air space to a lower air space located beneath the chamber. The air is then circulated into the chamber through an air permeable floor disposed across the bottom of the chamber. The permeability of the cover and floor varies in order to assure a uniform passage of heated air therethrough.

Abstract: The output shaft of a rotary drive motor is connected to a screw shaft which is disposed on the same axis as the output shaft. The screw shaft is rotatably mounted in an axial bearing in a housing, and engages an internal screw element (nut) fixed to a thrust body which is axially displaceable in the housing. A drive rod is rotatably mounted in the thrust body. In order to reduce the longitudinal dimension of the device, the free end of the screw shaft extends into a bore hole in the end of the drive rod, which rod serves to axially displace a thrust bar for adjusting a drilling tool in a drill head.

Abstract: A cutting insert for a cutting tool includes a cutting edge having a concave portion and a rear portion. The concave portion is disposed in the plane of one side surface of the insert and engages a workpiece in advance of the rear portion of the cutting edge. The latter extends from a radially outer end of the convex portion and has components directed radially outwardly, longitudinally rearwardly and toward the opposite side surface of the insert. The rear portion sequentially engages the workpiece to reduce the amount of vibration of the tool.

Abstract: This invention relates to means for connecting a male part with a female part, the male part being provided with a shaft that shall be inserted into a corresponding cavity in the female part and is retained there by means of a frictional device, the female part being to transmit a torsional moment to the male part.

Abstract: Chain saw bar having at its free end a sprocket 20 which supports the saw chain and is rotatably mounted between two side plates (18, 19) in the saw bar on a tubular shaft (26) which is rigidly connected to the sprocket and is adapted to transfer rotation to a driven shaft inserted into the tubular shaft bearing means (24, 25) being arranged in both side plates rotatably supporting the tubular shaft. According to the invention the tubular shaft (26) is short enough to be inserted into a kerf sawed by a saw chain mounted on the saw bar.

Abstract: A boring head (10; 50) for internal machining of bores in workpieces comprising an insert holder (16; 41) and an operating means (18; 27; 51, 52) resting thereagainst. The operating means is adapted to adjust the insert holder (16; 41) radially when turned about its longitudinal axis. The boring head (10; 50) is associated with control means (21; 28; 63), which are adapted to turn the operating means (18; 27; 51, 52). To advantage the boring head might be provided with a cutting insert, the cutting edge of which comprises a straight forward portion (68) and a convex rear portion (69).

Abstract: The relatch assembly employs a trackway of articulated sections which are reciprocated vertically while a carriage is reciprocally driven along the trackway sections to engage a carrier on the descending elevator. The articulated trackway sections permit engagement of a carrier and subsequent pulling of the carrier from the descending elevator. A ramp is also provided to act in synchronism with the trackway sections to support a carrier being pulled from the elevator. The carriage is cycled twice during the time one carrier is pulled from the elevator into relatching engagement with the main conveyor. During the second cycle, the trackway sections remain in a lowermost position.

Abstract: A flux retainer retains a granular flux upon a rotating cylindrical pipe to which a metal reinforcement layer is applied by a submerged arc welder. The flux container comprises a rectangular frame having a pair of end plates and a pair of side plates. Wheels are carried by the frame to support the frame upon the pipe surface as the pipe rotates. A pair of metal brushes are connected to the end plates and project therebelow to bear against the pipe surface and resist leakage of granular flux. The side plates each comprises a plurality of plate segments which are pivotably interconnected for rotation about an axis extending generally parallel to the pipe axis in order to change the angular relationship between the plate segments and thereby vary the distance separating the end plates. In this fashion, the flux retainer can be adapted to pipe diameters of different size.

Abstract: A milling cutter for clamped cutting inserts (12) which are held in position by means of a clamping means (14), which rests against the cutting insert (12) at a first contact surface (17) and against the cutter body (10) at a second contact surface (24). In order to obtain a large chip pocket by means of a clamping means (14) having short radial extent the clamping means is designed such that the distance between the first contact surface (17) and a supporting surface (21) for supporting the cutting insert is larger than the distance between the supporting surface (21) and the second contact surface (24).

Abstract: An internal disk milling cutter for the milling of workpieces includes a one-piece annular base body. Insertable tool bit holders are arranged around a circumferentially internal surface of the annular base. Most of the holders are in the shape of circular segments and have frontal surfaces engaging the frontal surfaces of the adjacent holders. One holder has frontal surfaces which are non-diverging in the radially outward direction. An adjacent holder has a frontal surface of the one holder. A clamp wedge is disposed in either of such opposing frontal surfaces to clamp all of the holders circumferentially together. The holders bear radially outwardly against the base at circumferentially spaced locations which are in the vicinity of the frontal surfaces.

Abstract: The invention relates to a device for supplying fluid to a tool (10) for breaking hard material, which is rotatably carried in a holder (11). Means are provided for supplying fluid to a nozzle (24) when the tool (10) is displaced axially rearwards during operation, said nozzle being located in connection with the tool (10). For purposes of facilitating rotation of the tool (10) about the longitudinal axis (29) thereof, the device is designed such that a torque is produced acting on the tool, and the tool seat (13,14) in the holder (11) is flushed when the tool (10) is displaced axially rearwards.

Abstract: A mount for the mounting of milling tool bits in a recess of a tool bit holder. A screw extends through a bore of the bit and screws into a threaded hole of the holder. A longitudinally slit sleeve is arranged between the screw and the inner wall of the bore of the bit and encompasses the screw. The end of the sleeve opposite the head of the screw rests upon a shoulder of the holder in such manner that when the screw is tightened the screw forces the sleeve into rotation about a rotary axis defined by the point(s) of contact of the sleeve with the shoulder. This rotary axis extends transverse to the screw axis such that an upper end of the sleeve is forced into engagement with the inner wall of the bit bore to secure the bit radially and axially. Replacement or indexing of the bit is permitted in response to minimal unscrewing of the screw, e.g., 90.degree. to 180.degree..

Abstract: An arrangement for quick-mounting and--dismounting of a cutting tool 10. A projection 21 on the machine spindle is fitted into a spacing 33 in a nut element 30 in the cutting tool and by rotation of the nut element 30 axially outwards the projection 21 is forced against an inner wall 39 of the spacing 33, whereby forcing the cutting tool 10 against the machine spindle.

Abstract: A retractable rotary cutting tool is disclosed in which the tool is adapted to be connected to a chuck or a tool holder of a machine tool such as an automobile tool changer on a numerically controlled machining center or the like. The cutting tool support is arranged to have a cutter which is recessed into the support and is pivotally connected to an actuating shaft coaxially within the tool support, which shaft reciprocates relative to the tool support when a thrust collar located about the tool support engages the work or another fixed external surface and will withdraw when the thrust collar engages for a second time an external surface or the work.

Abstract: A milling tool comprises a plurality of cutting bit holders mounted by clamps on the tool circumference. Each holder is mounted in a radial recess which is inclined with respect to the longitudinal axis of the tool. A pair of set screws are arranged for displacing each holder in a radial direction of the tool. Independently of such displacement, the bit holder is adjustable in an axial direction of the tool by means of an eccentric. The bit holder may also be displaced about an axis perpendicular to the plane of the cutter bit.