Abstract: A fiber optic attenuator having a predetermined, fixed attenuation value and low back reflection properties across a broad wavelength spectrum is disclosed. Attenuation is achieved by providing an optical fiber pathway having an attenuation region which causes a predetermined signal loss. The medium defining the pathway is of a substantially constant index of refraction through the device to minimize or eliminate interference caused by Fresnel reflections. An index matching material surrounds the area of attenuation to eliminate or minimize modal or cladding noise.

Abstract: In an oil film bearing assembly for a roll in a rolling mill, where a flexible seal is mounted on a tapered section of the roll neck at a location adjacent to a sleeve fixed to the roll neck and defining the journal surface, the improvement comprising an end portion of the sleeve being configured to overlap and radially confine an end portion of the seal to thereby resist centrifugal distortion of the seal during high speed rotation of the roll neck.

Abstract: A system and method for monitoring a rolling mill which includes a data acquisition module that continually acquires, from mill instrumentation computers, time domain data relating to finished product gauge, entering product gauge, separating forces occurring at each roll stand in the mill, and RPMs of each roll in the roll stands over a calculated data acquisition time period. A monitoring CPU transforms the acquired data into the frequency domain in response to the rolls operating at an approximately constant speed over the data acquisition time period. A frequency spectrum correlation analysis is performed with the frequency domain data in order to identify the specific contributions to frequency amplitudes occurring in the finished product gauge frequency domain data. A determination is then made as to whether the identified frequency amplitudes exceed predetermined thresholds which correspond to a predetermined warning level and a maximum tolerance level of the finished product.

Abstract: A bushing for an oil film bearing assembly has a plurality of hydrostatic oil recesses in its internal bearing surface at the load zone. Each recess is defined by the intersection of a double curved surface of revolution with the bearing surface, the recess thus being in the form of a portion of a prolate spheroid, with a substantially elliptical feathered peripheral edge.

Abstract: An oil film bearing for rotatably supporting the journal surface of a rolling mill roll neck on a hydrodynamically maintained oil film. The bearing includes a bushing having outlets adapted to axially interrupt the load carrying continuity of the oil film by draining oil from the load zone at locations intermediate to the ends of the bushing, thereby subdividing the load zone into at least two axially separated pressure zones. Position sensors are located between the pressure zones to monitor the spatial relationship or oil film thickness between the bushing and the journal surface. The journal surface is defined by at least two sleeve segments received on and fixed relative to the roll neck. Adjacent ends of the sleeve segments are aligned radially or in a coplanar relationship with the axial separation between the pressure zones. Temperature sensors monitor the temperature of the oil being drained through the aforesaid outlets.

Abstract: In a bearing assembly for a roll neck in a rolling mill, an inner seal ring is mounted with an interference fit as by shrink fitting, on an end portion of an inner bearing component, e.g., the sleeve of an oil film bearing or the inner race of a roller bearing. The end portion of the inner bearing component is suitably dimensioned and configured to deflect radially inwardly under the influence of hoop stresses developed as a result of the aforesaid interference fit, thereby causing the inner seal ring to be inclined towards the roll end face. The end portion of the inner bearing component has an outer diameter which is larger than the outer diameter of the remainder of the inner bearing component.

Abstract: In a bearing assembly for a roll neck in a rolling mill, an inner seal ring is mounted with an interference fit as by shrink fitting, on an end portion of an inner bearing component, e.g., the sleeve of an oil film bearing or the inner race of a roller bearing. The end portion of the inner bearing component is suitably dimensioned and configured to deflect radially inwardly under the influence of hoop stresses developed as a result of the aforesaid interference fit, thereby causing the inner seal ring to be inclined towards the roll end face. The end portion of the inner bearing component has an outer diameter which is larger than the outer diameter of the remainder of the inner bearing component.

Abstract: An oil film bearing for rotatably supporting the journal surface of a rolling mill roll neck on a hydrodynamically maintained oil film. The bearing includes a bushing adapted to interrupt the load carrying continuity of the oil film and to subdivide the load zone into compound pressure zones.

Abstract: The invention relates to a topical insect repellent soap composition and to a method of protection using such a composition. Generally, the insect repellent soap composition comprises:(1) from 63.0 to 99.5% by wt of a soap mixture containing from 4.1 to 7% by wt of a soap of caprylic acid, from 3.8 to 7% of a soap of capric acid, from 32.1 to 45% of a soap of lauric acid, from 12 to 17.5% by wt of a soap of myristic acid, from 5.0 to 10% by wt of a soap of palmitic acid, from 1.6 to 3% by wt of a soap of stearic acid, from 3.5 to 5% by wt of a soap of oleic acid and from 0.9 to 5% by wt of a soap of linoleic acid;(2) from 0.1 to 2% by wt of C.sub.8 -C.sub.18 straight chain fatty acids;(3) from 0.2 to 30% by wt of a repellent chemical;(4) from 0.2 to 5% by wt of an effective residual insecticide.

Abstract: A seal for use on the tapered section of a roll neck in a rolling mill. The seal has a flexible circular body with a circular lip and a circular flange at one end thereof. The lip extends axially from the body and the flange extends radially from the body and normal or perpendicular with respect to the body axis when the seal is in an unstressed condition. The seal is adapted to be axially received on and to be radially stressed by the tapered roll neck section with an accompanying radial expansion of the lip which produces a circumferential bending moment tending to angularly distort the flange from its perpendicular orientation to the seal axis. An internal circular shoulder on the seal body, coacts with the tapered roll neck section to counteract the bending moment and thereby prevent distortion of the flange.

Abstract: A circular coolant seal has a base flange arranged in a base plane perpendicular to the seal axis. A flexible resilient sealing flange is integrally joined at one edge to the base flange and terminates at its opposite edge in a sealing lip located in a sealing plane parallel to and spaced axially from the base plane. The sealing lip has a first portion extending from the base flange angularly away from the base plane and inwardly towards the seal axis to an intermediate hinge portion, and a second portion extending from the hinge portion away from the seal axis and angularly towards the sealing plane. The configuration, flexibility and resilience of the sealing flange is such that axial displacement of the sealing lip in relation to the base flange is accompanied by both axial and radial displacement of the hinge portion.