Abstract: A combination collapsible ruler and level includes a pre-stressed coilable and uncoilable spring strip ruler with a level tube mounting block mounted intermediate the strip ends. The mounting block has a foot portion which engages the supporting surface to make the spring strip self-supporting on a surface with the level tube in the proper plane. When collapsed the spring strip forms two coils which abut adjacent the level mounting block to provide for convenient handling.

Abstract: Molten metal sampling apparatus includes two or more paperboard sleeves held together in side by side relationship by glue, fasteners and a refractory cement joint with one of the sleeves being connectible by a friction-fit to a handle inserted in one of the sleeves and the other of the sleeves containing a sample mold. The handle is a paperboard tube which carries a thermocouple for measuring bath temperature. Additional sleeves can be added to carry sample molds of a different configuration. The sampling apparatus is adaptable for handling a wide range of sample molds and is inexpensive and relatively compact and enables taking of a sample and a bath temperature simultaneously.

Abstract: A sampler for taking a sample of molten metal from a stream of molten metal includes a mold body which is formed from two refractory mold halves with each half having an open faced cavity. In use the mold halves are secured together by spring clips which also press metal plates against the open mold faces to seal the open faces of the mold cavity. Grooves in the mold halves receive pin sample tubes and fill tubes. The split line between the mold halves affords venting of the mold cavity as the molten metal enters the mold cavity. The sample mold is manipulated by a handle which includes spring jaws with projections which are received in recesses in the mold halves. The spring jaws are expanded to receive and release the mold body by a lever arm secured to one of the jaws and extending along the handle.

Abstract: A folding table having a modesty panel employs a locking mechanism in the form of tab and hook assemblies to rigidify the table in the unfolded operative condition with the legs erect and the modesty panel in a position for use. The tab and hook assemblies are mounted on the panel and the tabs are received in slots in the adjacent leg assemblies to prevent hinged movement of the leg assemblies about their hinge axis. The hooks are rotatably and slidably supported in apertures in the tabs and are movable between a folded position and a leg embracing position. In the leg embracing position the hooks secure the tabs in the slots by preventing hinged movement of the panel.

Abstract: A stream sampler includes split metal mold halves for forming a disc sample and a pin sample tube which extends through the walls of the disc mold into the interior of the disc to provide a pin sample which has little or no decarburization and thus, more representative of the metal being sampled and closer in correlation in carbon percent to the disc sample. The pin sample tube is enclosed by a heat resistant insulative glass sleeve which extends beyond the end of the pin sample tube. The extension enhances filling of the pin sample tube by capillary action and provides a reservoir of metal to isolate the remote end of the pin sample from air and minimize decarburization.

Abstract: A dental impression composition is formulated from a hydrogenated wood rosin, petrolatum, aluminum powder and talc and includes the following characteristics: (1) good plastic flow at mouth temperature to provide adequate working time with low flow at room temperature; (2) good heat and light stability which affords good shelf life with no change in flow properties; (3) flow properties not changed during extensive heating and sterilization during preparation for application on the dental tray; (4) sufficient, but not excessive adhesion strength so that the composition adheres to the tray but not to the patient's wet tissues; and (5) low thermal-expansion coefficient so that there are no dimensional changes as the impression is cooled from mouth temperature and (6) good definition of detail.

Abstract: Palletizing apparatus for bags includes a bag flattener and vibrator, a bag pattern forming diverter, a row forming station, a full layer forming station, a pallet elevator and a pallet magazine. A programmable control for the diverter provides automatic sequencing of the diverter for orienting the bags in left or right lanes on a diverter conveyor to form a selected bag pattern. Either left or right lane can be provided with a turnpost which has a controlled deflector which either exposes the turnpost for rotating the bags 90 degrees or guides bags past the turnpost depending on the selected pattern. The programmable control enables automatic control of the diverter to provide successive layers of the same pattern but with a different orientation and also afford formation of many different bag patterns. The final layer forming station has movable guides to square the patterned layers before deposition on the pallet in the pallet elevator and guide the layer as it is deposited on the pallet.

Abstract: A prefabricated fireplace and chimney stack assembly includes a preformed or pre-cast concrete fireplace stack which has intergrally molded therein a hearth, smoke chamber and chimney flue as well as a sub-mantle. A stack base includes one or more flues which can communicate with the flue passages in the fireplace stack and which can be provided with a clean-out door. A chimney stack extension is adapted to be supported on the top of the fireplace stack section and is provided with flues which register with the fireplace flue. The fireplace stack and the chimney stack extension are provided with scored sides having a simulated brick appearance. Other preformed parts include a fire clay insert which goes into the combustion chamber, a preformed mantle with simulated brick facing and two simulated brick columns or corner posts which together with the mantle surround the fireplace opening.

Abstract: Perforating blades for perforating traveling webs of material such as paper in high speed apparatus are made from cold rolled steel which is hardened in a vacuum furnace to produce a scale free surface. The height to which the blades are ground is determined by measuring the average thickness of the blade and grinding the height of the blade to a dimension and tolerance in accordance with an equation which relates blade height to blade thickness. Thus the thickness of each blade can vary. With conventional knife rolls in which the blades form an angle of 45.degree. relative to a radial line of the knife roll, the sum of the height and thickness for each blade in the knife roll is equal.

Abstract: A sampler for taking a sample of molten metal from any source of molten metal includes a mold having a mold cavity with a fill passage and a flow diverter located within the mold cavity which causes turbulent flow of the molten metal as it enters the mold cavity to provide good mixing of the deoxidant and eliminate structural voids in the sample. In one embodiment, a pin sample tube has its inner end located in the path of flow from the fill passage to cause disruption of the normal flow patterns and provide the desired uniform sample.

Abstract: A bicycle storage bag includes two side panels with lower margins which are connected together to provide a weather seal on one side of the bag above the bottom of the bag. The bag is dropped over the bicycle and the margin or flap of one side panel is folded beneath the wheels and upwardly for connection to the other panel with snap fasteners. The side panels also include openings for receiving the support hooks of vehicle bicycle racks. Draw sleeves around the openings provide a weather seal. The openings in the side panels also enable a cable or chain from a bicycle lock to be extended through the opening, around the frame and out the opening to be fastened to the bike rack or other fixture.

Abstract: Disclosed herein is a die set in which the punch holder is guided for reciprocating movement towards and away from the die shoe by two-part leader pins, with the upper leader pin portions fixed to the punch holder and the lower leader pin portions fixed to the die shoe. Tapered surfaces on the upper leader pin portions are received in ball bearing cages located within sleeves on the lower leader pin portions to guide the movement of the punch holder. The tapered leader pin portions press the bearing balls into the sleeve to provide a tight shearing fit with no tolerance which minimizes deflection of the punch holder to provide more accurate punching.

Abstract: Molten metal sampling apparatus includes a permanent chill mold having opposed mold halves with recesses which define a sample cavity. The permanent mold is protected in use by a disposable housing and fill tube assembly made of paperboard which snugly receives the permanent mold which is fastened to a handle in the form of a pipe. A fibrous refractory gasket is carried by the housing and located against a refractory end wall in the housing to provide a seal when the permanent mold is inserted and pressed against the gasket. Three different fill tube housing assemblies are usable with the permanent mold. One housing assembly is adapted for use as a stream sampler; another for immersion sampling; and a third for pneumatic sampling.

Abstract: A boring bar has a free end that extends beyond the boring tool and has a guide roller rotatably mounted on the free end about an axis which is parallel to and offset from the boring bar axis. A guide bushing is supported in concentric alignment with the free end of the boring bar and rollably engages the guide roller at a point whose radius with respect to the boring bar axis extends in the same direction as the boring tool. The boring bar is preferably necked down between its supported end and the boring tool to facilitate deflection of the boring bar in response to pressure applied to the free end thereof by the guide roller and guide bushing.

Abstract: In a non-friction texturing process, the filaments of a thermoplastic polymer yarn are heated along spaced zones to form a latent crimp in the filament. The filaments are then drawn and are subsequently heated above the glass transition temperature of the polymer while the filaments are under low enough tension to allow the crimp to form. The heating along spaced zones is preferably accomplished by passing the filaments over a heated rotating grooved roll.

Abstract: Shelving stacks for a library or the like include lightweight pre-assembled free-standing modules which can be assembled as desired at the site. The modules are secured in assembly by rectangular top and bottom connecting frames and spaced by the frames so that the vertical frame members of the modules support slidable shelves within the modules and between the modules. The slidable shelves have a length greater than the depth of the modules. Rear wall ties and side frame ties are easily connected at the site to frame in an enclosure for the overhanging shelves and provide additional support for the modules as well as form an integrated assembly of the modules. The ties are provided in various lengths so that the shelving assembly can be arranged to provide the desired aisles and range pattern to fit the building floor plan.

Abstract: Perforating blades for perforating traveling webs of material such as paper in high speed apparatus are made from cold rolled steel which is hardened in a vacuum furnace to produce a scale free surface. The height to which the blades are ground is determined by measuring the average thickness of the blade and grinding the height of the blade to a dimension and tolerance in accordance with an equation which relates blade height to blade thickness. Thus the thickness of each blade can vary. With conventional knife rolls in which the blades form an angle of 45.degree. relative to a radial line of the knife roll, the sum of the height and thickness for each blade in the knife roll is equal.

Abstract: A coat hanger having a paperboard sleeve on the lower run is provided with an elastomeric band and projecting guide located centrally of the sleeve and depending downwardly therefrom and in which the elongated runs of the band are arranged around the guide and cross over beneath the sleeve to tension the elongated band runs against the sleeve to clamp ties or the like to the sleeve.