Abstract: A removable frame is detachably connected to a supporting frame by a connection having a plurality of spaced apart vertically extending sleeve-like members mounted on the removable frame. Upwardly projecting members are mounted at the periphery of the supporting frame and telescope into each of the sleeve-like members. A horizontal tubular housing attached to each sleeve-like member carries a locking element which cooperates with its upwardly projecting member to form a positively locked connection between the removable and supporting frame.

Abstract: A process and apparatus for treating wastewater with oxygen in which the wastewater is circulated on a horizontal course and is exposed to the introduction of oxygen or oxygen-enriched air in one or several sections of its course whereas it is exposed to the atmosphere on the remainder of its course. Oxygen of a higher concentration than atmospheric oxygen is contacted at least intermittently with the water surface and introduced into the wastewater through agitation of the water surface. At least a part of the total volume of the wastewater is treated by carrying out alternately at least two of the following three modes of operation: (a) surface aeration of the wastewater using atmospheric air; (b) oxygenation while maintaining atmospheric pressure above the wastewater; and (c) oxygenation while maintaining positive pressure above the wastewater with the operating modes alternating with each other in response to variations in the volume and/or character of the wastewater being treated.

Abstract: Pairs of upstanding wire-like members have their lower ends positioned adjacent each other and anchored in the ground in longitudinal spaced relation to each other. Adjacent wire-like members of adjacent pairs extend upwardly across each other and form spaced apart upper end portions. Each upper end portion terminates alongside the upper end portion of a next adjacent wire-like member of a next adjacent pair of wire-like members to form spaced apart pairs of upper end portions. A sleeve-like connector element telescopes over the crossed portions of adjacent wire-like members. A connector member extends between and detachably connects the adjacent pairs of spaced apart upper end portions.

Abstract: A pump for conveying waste water and the like embodying a substantially vertically arranged drivable screw mounted for rotation within a fixed pipe having an inlet at the lower end thereof and an outlet at the upper end thereof. At least one upstanding baffle is mounted below the screw and in the vicinity of the inlet with at least the upper portion of the baffle extending in the direction of conveyance.

Abstract: An improved clearer for the drawing rolls, namely the top rolls, of spinning machines and like equipment. The clearer comprises a main frame or supporting structure for a clearing belt. The frame is pivoted adjacent the rear end of the apparatus. Carried by a portion of the frame are spring members which respectively press the belt into frictional driving engagement with a serrated roller forming part of the roll system and into clearing contact with one of the forward rollers which is to be cleared. The relationship of the parts is such that the belt also engages the upper surface of at least one other roller which is forwardly mounted relative to the roller just mentioned, to clear the same. Also, the clearer is provided with idler rolls for the belt which are located lower than the top of the cross member of the frame thus to reduce the overall vertical dimensions of the device and to get more "wrap" on the forward top roll, resulting in better clearing.

Abstract: A mine roof support system having sets of laterally spaced pairs of elongated support members adapted to be moved into and out of abutting relation with a mine roof. Wheel supported frames extend between and connect adjacent end portions of each pair of support members with adjacent wheel supported frames at the ends of the support members being in spaced tandem relation and connected to each other by connector members. Extensible prop members are connected to and move the wheel supported frames and the elongated support members connected thereto selectively toward and away from the mine roof.

Abstract: Drilling apparatus embodying an elongated boxed-in frame supporting a transmission unit for longitudinal movement therein with the transmission unit connecting a polygonal drive shaft to a driven head which is threadedly connected to a drill rod section. A first drive unit carried by the elongated frame has a drive shaft in axial alignment with one end of the polygonal shaft with the other end of the polygonal shaft being in axial alignment with the drive shaft of a second drive unit. The drive units exert torque concomitantly at opposite ends of the polygonal shaft to rotate both ends of the polygonal shaft in the same direction. The elongated frame is carried by a supporting frame mounted for rotation about a vertical axis on a translatable frame to position the driven head at selected angular positions about the vertical axis.

Abstract: The radial first harmonic high point on a tire is marked as the tire is rotated on a uniformity machine having a sensor for sensing the high point. A tubular housing carried by a rotatable shaft receives a marking fluid which is dispensed at the lower end thereof by a spring loaded ball that is depressed by contact with the tire sidewall. The shaft is rotated to move the ball into contact with the tire in response to the sensor sensing the radial first harmonic high point on the tire with rotation of the shaft being synchronized with movement of the tire so that the radial first harmonic high point of the tire corresponds with the point of contact with the ball with the tire.

Abstract: A shelf is supported by at least one shelf support from at least one vertical support having vertically spaced slots therein. The rear edge of each shelf support carries upper and lower extensions which fit into the slots. Abutting surfaces between the upper and lower extensions extend at angles to each other and abut, selectively, the adjacent surface of the vertical support. A downwardly opening notch in the lower edge of each upper extension engages the adjacent portion of its vertical support between the slots therein while the shelf is horizontal. An upstanding projection on the upper edge of each upper extension engages the adjacent portion of its vertical support between the slots therein while the shelf is tilted. Depending projections on the lower extensions abut adjacent portions of the vertical support between the slots therein while the shelf is horizontal and are adapted to move over the portions of the support between the slots upon upward movement of the rear portion of the shelf.

Abstract: This invention relates to apparatus for continuously discharging liquid from a container, such as a waste water tank having a discharge pipe with an inlet located adjacent the container floor and an outlet located outwardly of the container. The liquid flow is controlled by a control unit which operates as a function of the liquid level in the container. The discharge pipe has a riser section between its inlet and its outlet which extends upwardly to an apex section to define an overflow for the liquid. The riser section is adjustable in height which is controlled by control means that always maintains the overflow at a constant elevation below the liquid level in the container.

Abstract: Disclosed is a process and apparatus for affixing, specifically, sewing, labels to garments and the like. The process comprises the removal of labels one by one from a vertically disposed stack of the same located adjacent the sewing station. These labels are lifted vertically from the stack, transferred to the sewing station by swinging the label transversely from over the stack to a position over the sewing station. Upon arrival thereat the label is lowered vertically onto the workpiece such as a garment at said sewing station. The label is then held in contact with the workpiece by pressing downwardly about at least a portion of its periphery and while so held is sewed to the workpiece. The apparatus comprises a magazine for a vertically arranged stack of labels, together with a pneumatic pick-up device which is operable to remove the labels one by one from the top of the stack and transfer them to the sewing station.

Abstract: Apparatus for inserting a flexible plastic pipe into an old, larger size pipeline system. A lower roller assembly has at least one lower roller which engages and supports the flexible pipe adjacent the receiving end of the larger size pipe and an upper roller assembly has at least one upper roller which engages the upper surface of the flexible pipe opposite the lower roller. An actuator imparts relative movement between the upper and lower roller assemblies selectively toward and away from each other so that the upper and lower rollers are in driving engagement with the flexible pipe upon movement of the roller assemblies toward each other. A drive unit rotates the upper and lower rollers in a direction to push the flexible pipe into the larger size pipe while the rollers are in driving engagement with the flexible pipe.

Abstract: Closely spaced cultivating tools are mounted along a tool bar and each tool may be locked in a raised position relative to the ground or may be lowered into floating engagement with the ground during use of the implement. A small tool bar is mounted parallel to a larger tool bar and the cultivating tools are slidably clamped on the small tool bar. Improved mounting structure allows each cultivating tool to be mounted on the small tool bar without having to slide each cultivating tool onto or off of the tool bar from the ends of the tool bar and without having to disassemble the mounting structure. The tool bar assembly includes row indicia for indicating where the tools are to be located along the tool bar and which tools should engage the ground and which tools should be raised away from the ground for various cultivating operations on row crops. A tool angling mechanism allows selective adjustment of the angle to the line of draft of each tool without the use of wrenches or other hand tools.

Abstract: A wood chipper embodying a pair of adjacent discs mounted in face-to-fact relation on a drive shaft for rotation therewith. The discs are secured to each other and have angularly spaced aligned passageways therethrough. A recess is provided in one disc at the trailing side of each angularly spaced passageway, as viewed in the direction of rotation. A knife holder mounted within each recess carries a knife which is retained by a knife clamp. Interlocking means between the clamp and the knife holder limits relative movement therebetween both axially and radially to maintain accurate location of the knives. The end of the knife holder removed from the aligned passageways is spaced from its disc to define a cavity which receives babbit. Also, the edge of the knife opposite its cutting edge is spaced from the knife holder and may have slots which extend at an angle relative to the cutting edge to define cavities which receive babbit.

Abstract: Apparatus for separating liquid and/or solid particles suspended in a gaseous and/or vaporous media stream centrifugally has a curved channel through which the media stream flows. A turbulence chamber is connected to the concave side of the curved channel and accommodates a partial stream of the media stream and has at least one discharge opening for particles separated from the partial stream and at least one exhaust opening for the particle free fraction of the partial stream. At least one of the walls of the curved channel and the turbulence chamber has a cavity for the passage of a heat transfer medium.

Abstract: Drilling apparatus embodying an elongated frame supports a transmission unit for longitudinal movement therein. The transmission unit carries a drive head slidably driven by a polygonal, parallel drive shaft and is threadedly connected to one end of a drill rod section in axial alignment therewith. The other end of the drill rod section is connected selectively to another drill rod section and a drill bit. A drill rod rack is mounted for rotation about an axis within the elongated frame and carries a plurality of angularly spaced drill rod sections which are moved sequentially into axial alignment with the driven head whereby it is positioned to drill a hole while extending through the rack. The drill rod sections extend through angularly spaced passageways in a support member which is carried by a shaft at the axis of rotation of the drill rod rack.