Pangborn Corporation

Kennecott Corporation

Other

The Carborundum Company

Federal-mogul World Wide, Inc.

Federal-mogul Corporation

James H Carpenter

Donald G Corderman

Ronald L Mullins

Gerd Andler

Warren J Whitney, Jr

David Michael Saxton

Holger Schmitt

Robert L Greene

Ronald L Smith

Donald M Barnhart

Bernard W Ixer

Haven L Keller

Joseph E Bowling

Gregory Sevenski

Russell L Rowe

Jerry L Godwin

Kenneth R Peters

Charles H Bradley

Horace A Bailey

A bearing having improved wear resistance has a bearing material of a copper-tin-bismuth alloy which may also include phosphorus which has excellent strength, due to the solid solution of copper, tin and phosphorus (when used), attached to a steel backing shell. The material also has good lubricity as a result of the presence of the bismuth which also promotes tin mobilization and formation of a layer of tin on the bearing surface upon use of the bearing. The addition of small amounts of relatively small hard particles in the copper-tin-matrix, particularly FeP, MoSior a mixture thereof, provides a suitable hard surface artifact to improve the wear resistance of the bearing material. The bearing includes a sintered powder compact bearing material of a copper-tin-bismuth alloy powder and a metal compound powder which is bonded to a steel backing shell, wherein the metal compound powder has an average particle size of less than 10 &#x3bc;m.

Wear resistant lead free alloy bushing and method of making

A lead-free bearing includes a bronze matrix powder metal bearing layer bonded to a steel backing a fully densified. The bearing material has about 8 to 12% by weight tin, about 1 to less than 5% by weight bismuth, and about 0.03 to 0.08% by weight phosphorus, with the balance being copper. The tin is soluable in the copper to yield the bronze matrix, and the bismuth exists as finely dispersed, undissolved islands through the matrix. Such bearings exhibit physical properties comparable to or better than those of traditional bronze-lead bearings and improved wear in seizure properties.

Lead-free bearing

A tool and a method for cutting and installing roofing shingles. The tool includes a base with a work surface and a cutter for cutting shingles placed on the work surface. The work surface include at least one limiting pedestals which includes an edge at a distance from the work surface, so that several shingles stacked over one another and placed over the work surface and slid against the edge of the limiting pedestal to expose different proportions of the shingles to the cutter to produce shingle sections of different sizes. The different sized shingle sections are then used to start the rows of shingles placed on the roof to be covered with shingles.

Roofing tool system and method

This relates to a batting wheel particularly useful in a surface cleaner for batting abrasive particles against a surface to be cleaned. The batting wheel includes a hub which carries a plurality of axially spaced collars. At the ends of the batting wheel there are vane retaining plates of which at least one is removable so as to facilitate the removal and replacement of vanes. Each vane includes a flat blade and a retaining enlargement at the radially inner end of the flat blade. The collars are provided with axially aligned, circumferentially spaced slots for receiving the anchoring portion of a vane with each vane having an enlargement which is received in an enlarged opening in the respective collar. The enlarged opening is disposed at the inner end of a slot which receives an axially inner end of the flat blade. This permits the opposite batting faces of the flat blade to be selectively presented for batting abrasive particles.

Batting wheel and vanes for the same

This relates to an improved abrading machine which is of an inexpensive contruction and simple to maintain. Each abrading machine includes a casing in which there is mounted for oscillation a rocker barrel. The casing construction varies in accordance with the intended use of the abrading machine. In one form the casing will be provided with a combined entrance and discharge opening. In another machine the front wall of the casing is provided with an upper entrance opening and a lower exit opening through which a single work piece or work pieces in a batch may be loaded into and discharged from the rocker barrel. In a further abrading machine, loading may be effected by way of an axially movable hopper which moves into overlying relation to the rocker barrel through an end wall of the casing and discharge of work pieces is through the bottom of the casing. In all forms of the abrading machine, cleaning of work pieces is effected by way of one or more blast wheels which throws abrasive particles through an open upper end of the rocker barrel on to the work pieces loaded therein. When the cleaning time is short, the blast wheel may be continuously rotated and valve means may be provided for controlling the supply of abrasive particles to the blast wheel.

Batch rocker barrel

This relates to a pipe cleaner for cleaning pipe interiors such as gas and oil pipelines. The pipe cleaner is adjustable for cleaning pipes of different diameters beginning as low as 12' inside diameter. However, the usual requirement for gas and oil line pipes is between 20' to 48' diameters with it being feasible to clean pipes of greater diameters. The pipe cleaner includes a cleaning head carried by a boom with the pipe cleaner consisting primarily of a high performance blast wheel driven by a hydraulic motor. The blast wheel is provided with radiating vanes which are of a flared construction and with alternating vanes being differently shaped so as to provide for a wide pattern of abrasive particles. The cleaning head is positioned within the pipe to be cleaned by being carried by a boom with the pipe being supported coaxial with that of the boom and being rotated. The boom is supplied with compressed air into which abrasive particles for the blast wheel are fed with the abrasive being carried by the compressed air and being separated from the compressed air in the cleaning head. Used abrasive particles are returned to a hopper from which the abrasive particles are dumped into a travelling hopper connected to the boom at the time the cleaning head is placed entirely within the pipe. After cleaning, the pipe is tilted so as to cause flow of abrasive particles and foreign material down therethrough into a receptacle.

Inside pipe cleaner

This relates to an inexpensive blast wheel for applying abrasive particles to work pieces to be cleaned. The blast wheel provides a simple arrangement for supporting vanes in the form of a hub having a bowl shaped portion in which bases of vanes are seated with the bases being clamped in place by a plate portion of an impeller. Each vane includes a wide base connected to the vane by way of a spacer. The impeller plate has a notch for each vane with the notch receiving the spacer and overlying the base. The bowl portion of the hub includes a peripheral flange which engages an outer end of the vane base to restrain it against radial outwardly directed movement. The vanes may be changed by providing the hub flange with a notch through which a vane base may pass. By loosening the impeller plate relative to the hub, and aligning each vane in sequence with respect to the notch, the vane may be slid through the notch and removed from the hub. With smaller vanes, the vanes may be assembled with the impeller and clamped in place by a hose clamp and then the entire impeller and vane arrangement assembled with the hub. There is also an impeller case which is positioned between the impeller member of the impeller and the vanes to control the path of abrasive particles. The case is rotatable relative to a guard housing for varying the path along which the abrasive particles are thrown.

Inexpensive abrasive blast wheel

This relates to a cleaning machine which employs blast wheels to throw abrasive particles against a workpiece to be cleaned. The cleaning machine is of a simple construction and employs two wire mesh belts through which abrasive particles may freely pass. A first of these belts extends longitudinally through the machine and serves to support workpieces or articles to be cleaned. The workpieces are cleaned by blasts of abrasive particles from opposite sides of the belt and from above and below the belt. This first belt may be considered extending longitudinally of the cleaning machine. The abrasive particles fall into a bottom collection trough and are removed by an abrasive particle collection system which includes a second wire mesh belt through which abrasive particles can freely flow into the collection trough. The second belt is also vertically disposed, but extends transversely of the first belt. The second belt carries a series of buckets for removing collected materials including abrasive particles from the collection trough and dumping the materials onto an upper run of the second belt through which the collected materials freely flow into collection bins. The collected material flows in a curtain from each of the bins through which an air blast passes to remove foreign material from the abrasive particles, after which the abrasive particles fall into respective supply hoppers for the blast wheels.

Wire mesh conveyor abrasive machine and abrasive return system therefor

Workpieces such as sand-casted automobile engine blocks are cleaned by advancing a series of such workpieces axially into one end of an elongate, skeletal barrel that holds the workpieces and rotates or tumbles them in the path of impinging streams of particles. The workpieces are advanced from one end of the barrel to the other by oscillating the barrel along the longitudinal axis of the barrel. By this technique, workpieces can be advanced through the barrel without the need to push the workpieces against each other, or without the need to provide workpiece-engaging and advancing mechanisms.

Method and apparatus for cleaning workpieces

This relates to an oscillating or reciprocating conveyor wherein the work pieces move in a single plane, generally horizontal, and wherein the conveyor, if desired, may also be a rocking conveyor. This particularly relates to a drive for such a conveyor wherein the conveyor is moved in the work piece advanced direction by a fluid cylinder and wherein there are compression springs for moving the conveyor rearwardly at the end of each forward stroke. More particularly, there are provided rapid exhaust systems for cylinders whereby the conveyor and work pieces carried thereby may be advanced at a relatively slow uniform rate and at least at certain predetermined periods the fluid cylinder can be rapidly exhausted and driven by the spring or springs so as to rapidly reverse the direction of movement of the conveyor with the result that the conveyor moves rearwardly while the advanced work pieces remain stationary. If desired, a suitable shock absorber arrangement may also be provided. The fluid system may include valving which permits the back and forth reciprocation of the conveyor and work pieces carried thereby beneath a blast wheel followed by a periodical rapid return of the conveyor so that the work pieces are in effect advanced relative to the blast wheel.

Flat stroke conveyor

This relates to an abrasive cleaning machine wherein there is mounted within a suitable frame or housing a work supporting conveyor which is mounted for both reciprocatory and rotational movement. When the conveyor is in the form of a rocker barrel, the rocker barrel is only oscillated. On the other hand, when the conveyor is in the form of a cage-like conveyor, the conveyor is continuously rotated. The principal feature is the mounting of the conveyor for such rotary and reciprocating movement. This includs a support structure in the form of a support sleeve mounted for rotation and a support shaft mounted within the support sleeve for relative reciprocatory movement. The support shaft carries a pair of longitudinal ribs which are engaged by rollers carried by the support sleeve to transmit rotational movement from the support sleeve to the support shaft. Thus the supporting of the conveyor is simplified. When the conveyor is of the cage-like type, it may be provided with a suitable gate and pusher arrangement for discharging workpieces at the terminal end thereof.

Abrasive cleaning machine

An abrasive cleaning machine specifically constructed for cleaning pipes. The machine is mounted on an elevated portion of a previously buried pipe and is moved along the pipe to effect cleaning of the pipe. The machine basically includes a simple housing which carries a plurality of blast wheels specifically positioned to provide a frustoconical curtain of abrasive particles through which the pipe being cleaned passes. Suitable wear plates are provided to prevent undue wear on adjacent parts of the cleaning machine. Spent abrasive particles and removed material are collected at the bottom of the cleaning machine in a collection trough through which there runs a lower run of an endless belt. The belt is of a wire mesh construction so that abrasive particles and removed material freely passes through the belt. The belt carries buckets which are so configurated that when the buckets reach a top horizontal run of the belt, the collected materials within the bucket are discharged from the bucket through the belt. The buckets are mounted on the belt in a manner whereby the belt is free to flex or bend around support rollers. The abrasive particles and removed material are emptied into a bin from which they are discharged in a curtain and through which air flows so as to separate the foreign matter from the abrasive particles. The abrasive particles then fall into hoppers from which the abrasive particles are delivered to the individual blast wheels.

Growing community of inventors

Hagerstown, MD, United States of America

James H Carpenter