Abstract: The indicator includes rotationally movable indicator means for indicating a selected reference angle and pendulum actuator means for maintaining the angular position of the indicator means substantially constant with respect to vertical. The indicator is particularly suited for use in the correlated preparation of multiple teeth for application of one piece multiple crown castings by forming corresponding inclined teeth surfaces parallel.

Abstract: The system receives subscriber station address information in the form of dial pulses transmitted from a calling station along a common intercom circuit and selectively accesses a called subscriber station having a corresponding station address in order to produce a call indication ring-out thereat. The system includes a hook condition detector circuit which controls multiple system functions with respect to the on-hook and off-hook status of the calling station, and further includes a dial pulse detector circuit which effects additional control with respect to completion of dialing by the calling station. The system is suitable for use with ten or varying numbers of subscriber stations and may include, for applications having more than ten subscriber stations, appropriate transfer and associated output control circuitry for double digit operation.

Abstract: A portable building comprised of one or more foldable, prefabricated transverse sections which, when erected and placed end to end, form the side walls and roof of the building. Channel members extending along the edges of the transverse sections are positioned and connected face to face by protruding U-shaped brackets. The backs of the channel members engage and position appropriate insulating panels or layers of varying thicknesses. Prefabricated end panels form the end walls of the building and are connected thereto by brackets generally similar to those used to connect adjacent transverse sections.

Abstract: The sheets in a column of compartments of a sorter, collator or the like are jogged to align their edges. An endless belt is moved past a glue dispenser to coat a length of the belt corresponding to the number of compartments to be covered. The belt is then moved into engagement with the edges of the sheets in those compartments to deposit the adhesive on the edges. The operation is then intermittently repeated along the edges of the sheets to bond the desired extent of the length of the edges. A jogging mechanism aligns and holds the edges in alignment for binding.

Abstract: The ferrule joint includes a ferrule and an element telescopically insertable into the ferrule to frictionally interlock two rod sections. The ferrule and insertable element are integral with respective mating ends of the two rod sections. The ferrule joint is particularly suitable for use with sectional rods fabricated of tubular hollow core reinforced resin rod blanks which are of relatively small cross section and which employ stiff fibers such as boron or graphite as resin reinforcement.

Abstract: A fast gelling method of formulating and applying a curable butyl rubber sealant composition which composition is cured using a quinoid curing agent and a free radical cross-linking activator. The curing agent and a first portion of the activator are added to the sealant components to produce a base component. If the amount of activator in the first portion is chosen correctly, the base component remains ungelled until the remainder of the activator is added, at which time a very rapid gel takes place. This method is particularly useful where the sealant is a tire sealant and is to be sprayed onto the inner surface of a tire.

Abstract: A dust collector of the gravity separation type is combined with a heat exchanger to provide a dust collector/air preheater, or a dust collector/economizer, depending upon the heat exchange fluid used, suited for usage in a system or process for discharging and exchanging heat with exhaust gases from a boiler.

Abstract: The jogger includes side edge joggers in combination with an end edge jogger and a resilient sheet stop, both extending the height of a vertical column of sheet receiving compartments. The sheet stop engages and positions the sheets within the sheet receiving compartments in preparation for jogging without damage to the end edges. Thereafter, the side and end joggers align the sheet edges against respectively opposed backstops. The jogger provides simultaneous edge alignment of all four edges of stacked sheets within the sheet receiving compartments and is especially suited for use in conjunction with sheet binding apparatus for simultaneously binding the stacked sheets along corresponding coplanar edges.

Abstract: The car wash apparatus includes two opposed side brush assemblies, each comprised of two brushes supported by respective independently powered arms pivotally mounted upon a common pivot member. The arms are of such angular configurations that, with respect to the apparatus centerline, the opposed side brushes can be swung oppositely to and from overlapping washing positions so disposed that the side and end surfaces of the car are fully contacted, regardless of the width of the car. Contact pressure applied by each brush is controlled and independently maintained substantially constant such that substantially the same brush contact pressure is applied to cars of varying widths. To minimize length, the pivot members of the two side brush assemblies are located directly opposite one another. Additionally, the apparatus may include a rotatable top brush assembly including angular arms capable of washing the top surfaces of automobiles, trucks, vans and the like.

Abstract: The mat cutting apparatus includes a cutter for making a bevel cut and an adjustable edge guide having a vertical straight edge surface with which a vertical flat surface on the cutter is slidably engaged as the cutter is pushed along the edge guide to make a straight, beveled cut parallel to one edge of the mat. When used to cut an opening in a mat for mounting pictures or the like, the outline of the picture is traced on the back of the mat parallel to the edges thereof and then the mat is secured face down on the edge guide with the straight edge surface positioned adjacent and parallel to one traced line. The cut is made from the back surface of the mat such that the cut through the front mat surface registers with the traced line on the back mat surface. The mat is turned, the edge guide repositoined and the cutting process repeated until the mat opening is cut out completely.

Abstract: The system includes a plurality of material discharge spouts combined with a blending device for use with a hoppered bin. Each spout opens to the hopper at a location selected to draw material into the hopper from substantially one predetermined portion of a horizontal bin cross sectional plane in a first in -- first out segregation free manner. The blending device combines the material discharge streams formed by the spouts in proportion to the areas of the portions of the horizontal bin cross sectional plane from which they are drawn, respectively, to form a common discharge stream of uniform composition. The principles of the invention are applicable to conversion of existing bins or bin bottoms, or to a bin withdrawal system or process. Also disclosed is a blending unit which includes a mass flow hopper, the blending unit being particularly suited for bin or bin bottom conversion application.

Abstract: The sheets in a column of compartments of a sorter, collator or the like are jogged to align their edges. An endless belt is moved past a glue dispenser to coat a length of the belt corresponding to the number of compartments to be covered. The belt is then moved into engagement with the edges of the sheets in those compartments to deposit the adhesive on the edges. The operation is then intermittently repeated along the edges of the sheets to bond the desired extent of the length of the edges. A jogging mechanism aligns and holds the edges in alignment for binding.

Abstract: The initial quick freeze (IQF) pan includes a horizontal baffle plate about which liquid freezant is recirculated continuously in a flow path having a lower reversely directed portion, a semi-circular intermediate portion, and an upper forwardly directed portion terminating at a sharp crested weir adjacent which the freezant flow divides, the relatively high velocity freezant surface layer passing over the crest of the weir while the lower main body of freezant is recirculated into the lower reversely directed flow path portion. Food particles are dropped into the freezant as it flows along the upper forwardly directed flow path portion and are carried by the relatively high velocity freezant surface layer over the crest of the weir.

Abstract: The cellular structure is made up of a series of interengaged cell segments which form a series of triangular cells. The cell segments each include an equilateral generally triangular main body portion and a flat leg portion projecting from one tip of the main body portion. The outer surface of each leg portion is parallel to the outer surface of the main body portion wall opposite the tip from which the leg portion projects. Each leg portion extends to and engages a groove formed in the tip of an adjacent cell segment to provide a continuous outer surface to which a panel facing sheet may be secured. Another panel facing sheet may be secured to the outer surface of the main body portion opposite wall.

Abstract: A film cutter attachment includes one or more tape dispensing units, each of which dispenses automatically a continuous strip of pressure-sensitive adhesive transfer tape which is applied progressively to the back of a continuous strip of developed photographic film prints as the latter is drawn intermittantly into a conventional film cutter. Each tape strip is trained about a roller on the end of a pivotally movable arm which controls tension in the tape strip and causes additional tape to be dispensed. The film cutter cuts the print and tape strips after they are joined together adhesively into individual prints with adhesive transfer tape backing. The tape backing includes a cover ply which when peeled off leaves the strip adhesive adhered to the print and exposed for mounting the print.

Abstract: The positioning of the piston rod of a double acting hydraulic cylinder is accurately controlled by means of applying hydraulic pressure, created by the controlled displacement of a fluid independent from the primary fluid system, against the piston of a servo-cylinder which controls the servo-valve for the double acting cylinder. As the piston rod of the double acting cylinder moves, the pressure on the servo-cylinder is relieved and the servo-cylinder is returned to a balanced condition, restoring the neutral position of the servo-valve. In another embodiment the application of pressure to a fluid system independent from the primary fluid system is sensed by an electro-hydraulic transducer and a proportional electric signal is produced for controlling the electro-hydraulic servo-valve of the double acting cylinder. As the piston rod of the double acting cylinder moves, fluid is displaced, relieving the sensed pressure and returning the servo-valve to a neutral position at a new setting of the piston rod.

Abstract: A mobile vehicle shock insulated suspension system is provided with unique variable rate elastomer springs and co-related variable rate friction damping system.

Abstract: A vertically adjustable infeed conveyor section for the conveyor system of a sheet sorting device. The sheet sorting device is of the type having side-by-side vertical columns of bins with distributor means for directing individual sheets or groups of sheets of paper in series to the individual bins. The infeed conveyor section receives sheets of paper or the like from a sheet feeder, a duplicator, or printing press and delivers them to the conveyor system of the sorter. The infeed conveyor section is adjustable vertically to adapt itself to any height of sheet feeder or duplicator. The in-feed conveyor section includes a horizontal initial section, an inclined transition section, and a delivery section having a vertical run to which the transition section extends. In a second preferred embodiment, the transition section extends directly to the upper terminous of the delivery section vertical run.

Abstract: A control system for a road grader adapted to maintain the working edge of the grader blade in a preset datum plane so as to establish a uniform graded condition of the surface worked by the blade, regardless of the inclination assumed by the motor grader or the relative angular position of the blade itself. The system includes grade sensor means mounted adjacent one end of the blade to follow a pre-selected grade datum, slope sensing means mounted in fixed relation with the blade for keeping the blade at a predetermined slope with rotation sensing means mounted on the blade supporting ring or circle to detect the relative angular position of the blade. The rotation sensing means provides a correction signal for maintaining the slope angle of the blade at a value which will keep the "cross slope" of the surface established at a predetermined value regardless of the rotary position of the blade relative to the direction of travel.

Abstract: A composite glass fiber cable is disclosed having a negative linear coefficient of thermal expansion which is controllable by variation of the .Iadd.helical angle or angles of .Iaddend.twist of helically plied glass roving to substantially zero change in length over a wide variation in environmental temperatures under varying load conditions. .Iadd.It is possible, by controlling the helical angle and maintaining it constant from the cable center to outer surface, to control thermal elongation effects on the cable to obtain either expanding, contracting or constant length cables over a wide temperature range. .Iaddend.