Abstract: A plant for preheating and, possibly, heat-treating bars (2) of aluminum or aluminum alloys and subsequently severing the bars (2) into slugs (10) comprises a furnace (4) for the heat treatment and preheating only, if desired, billet hot shears (7), and a quick preheating furnace (16) connected between the hot shears and the furnace. Upon selection of the operating mode of heat treatment of the bars (2), the quick preheating furnace serves as cooling apparatus providing for temperature controlled cooling and corresponding renewed heating to a predetermined billet pressing temperature when the admissible temperature is not reached. When the plant operates alone to preheat the material, the quick preheating furnace serves as preheating furnace the exhaust gases of which serve to preheat the bars (2) in the furnace (4) through an exhaust gas conduit (19). This plant permits particularly economic and flexible operation, i.e.

Abstract: The formation of nitrosamines in cooked, cured meat products such as ham and bacon is reduced by a process in which the meat is injected with a curing solution containing nitrite and a food grade acid encapsulated with a coating material which melts at a temperature above 115.degree. F.

Abstract: Methods and compositions for cleaning and protecting metal are disclosed, particularly useful in cleaning chrome and chrome plated surfaces. The composition comprises 40 to 75% of compounds selected from the group of anhydrous oxides of metals in Group IIA of the periodic table, 12 to 30% silicon dioxide, 2 to 20% of compounds selected from the group of anhydrous aluminum and borate oxides, 0.25 to 10% of anhydrous carbonates or hydroxides of metals selected from Group IA of the periodic table and 0.5 to 3% of silicates of metals in Groups IA and IIA of the periodic table.

Abstract: A plurality of paging terminals each serving a locality are connected by a multi-drop communication link to establish an inter-regional paging network. The terminals observe a token passing protocol to provide for an orderly sequential use of the communication link. Down terminals are skipped in the sequence. The lack of activity on the communication link will cause a start-up timer in the terminal to reset. Retransmissions are requested by a terminal from another terminal which is on-line when the terminal fails to receive a message in a particular round through the network.

Abstract: A method for restarting a tool on a workpiece contour in a numerically controlled processing machine of the type having a display unit for alphanumerical and/or graphical representation of processing information. After a program interruption, the program is executed anew in a control mode without machine movement from a predetermined starting point, and the resulting workpiece contour is continuously, graphically represented on the display unit. The operator utilizes this graphic display to determine an end point of the control mode program execution. The machine is then transferred into its axial positions and its function state to the program state of the end point, and the processing program with machine movements is continued from this end point, thereby starting the tool onto the desired tool path.

Abstract: An improved dough crust made by a process involving baking and then frying is described. The crust has a fried flavor and is especially advantageous for making frozen pizzas. The crust is formed from a sheeted dough piece which has been docked. During the baking step the docking holes bake through. A hard surface forms in them to both prevent oil absorption through the holes and to prevent crust delamination. After the crust has cooled pizza topping can be applied and the crust frozen.

Abstract: In an incremental measuring instrument for measuring the relative position of two objects, of the type including reference marks absolutely positioned with respect to a graduation of a scale, a first scanning plate with scanning fields for the graduation is provided in a scanning unit which is shiftable on a guide independent of the guide of the objects to be measured. The second scanning plate is connected to the first scanning plate by means of a coupling which is rigid in the measuring direction. In this way the separation of the first and second scanning plates with respect to the scale can be adjusted independently for optimal scanning of both the graduation and the reference marks.

Abstract: A device for sealing a slit in the housing of an encapsulated instrument through which passes a follower for mechanically connecting an object to be measured with the measuring instrument. The slit in the instrument housing is sealed by a slotted tube, with overlapping flanks, running the length of the slit. An enlargement on the follower in the form of an ellipsoid clings to the interior of the tube walls and extends beyond the opening in the tube created by the passage of the follower, thereby maintaining a seal.

Abstract: A trailer mounted densitometer proving system includes three product tanks, each of which stores a respective petroleum product having a differing specific gravity. The product from any one of the three tanks is circulated via an electric pump through a pycnometer, a densitometer being proved, and a heat exchanger. The heat exchanger controls the temperature of the circulating product and a pressure control system controls the pressure of the circulating product. By comparing the pycnometer weight with the densitometer reading, the densitometer can be proved for a wide range of pressures, temperatures and products in order to determine the accuracy of the densitometer under actual working conditions.

Abstract: An apparatus for processing poultry gizzards at substantially high line speeds. A plurality of gizzards preferably with the stomach and intestines attached are directed in a random arrangement into a feeding and aligning station. Feed roll means at that station apply an initial orienting force to each gizzard and transport each gizzard along a predetermined path. Orienting means adjacent said feed roll means applys a second orienting force to each gizzard which cooperates with the first orienting force to orient each gizzard into a preselected position. Means are also provided to secure each gizzard in said preselected position. Means then remove the stomach and intestines from the tender lining of each gizzard. Slitting and spreader means slit and open each gizzard, and cleaning means flush the contaminants from the opened gizzards. Shearing means then engage and remove the residual tender lining from each gizzard, and peeling means peel the interior lining or membrane from the gizzards.

Abstract: A length measuring instrument includes a flexible measuring band which slides in a groove defined by a scale carrier body. The measuring band is fixed at one end to the carrier body. The second, free end of the measuring band is fastened in an oscillator which excites this free end into high frequency, low amplitude vibrations. These vibrations act virtually to eliminate harmful friction between the measuring band and the scale carrier body, and to reduce fouling of the measuring band markedly.

Abstract: A mounting system for an additional communication cable on a utility pole is described. This mounting system includes a support arm which bolts to a through bolt that extends through the utility pole and is used to mount a pre-existing communication cable. A strand clamp is mounted to the outer end of the support arm, and the strand clamp serves to support a strand and a communication cable such as a CATV cable in the conventional manner. If desired, a diagonal reinforcing strap can be provided between the pole and the support arm. By using a single through bolt to mount both the strand clamp for the existing communication cable and the support arm, clearance and interference problems are minimized and installation costs are reduced.

Abstract: A polyolefin compatable liquid colorant/additive concentrate for molding plastics. The colorants and additives are conventional pigments and additives. The vehicle contains (A) a low molecular weight addition polymer, such as a polybutene, a polystyrene, a poly alpha-methyl styrene/vinyl toluene copolymer, or an acrylic polymer or copolymer, and (B) an essentially non-volatile solvent for the low molecular weight addition polymer which has a boiling point of at least about 450.degree. F. and which is compatable with the resin to be colored. The liquid concentrate has a Brookfield viscosity between about 1000 and 40,000. The colorant concentrate produces uniform color finished products, without visible streaks or specks. It also eliminates screw slippage.

Abstract: A length or angle measuring instrument includes a measuring scale which is perforated. The perforations are engaged by gear wheels which operate to stretch or compress the scale in order to compensate for measuring errors of the measuring graduation as well as for errors in the guides of the object to be measured. This system can be used to compensate both linear and non-linear errors.

Abstract: In a sensing or measuring arrangement for determining the position or dimensions of a test object, the sensing arrangement housing is fastened to a receiving element for the installation of the sensing housing onto a tool receptacle of a spindle of a machine tool. A voltage source is included in the sensing housing to power a measuring signal transmitting system. In addition, a switching arrangement is included for switching the voltage source from a standby mode of operation characterized by low current consumption to a measurement mode of operation in order to increase the life of the voltage source. This switching arrangement is responsive to an expansion measuring strip which detects an axial elongation of the receiving element in the tool receptacle. In the disclosed embodiment the expansion measuring strip is fastened to an inner surface of the receiving element which is subject to axial elongation when the receiving element is installed in place in the spindle of the machine tool.

Abstract: An apparatus for producing multiple ribbed, spiral seamed pipe from a metal strip thinner than 29 gauge is disclosed. The apparatus includes the conventional elements of a frame, a drive roller for feeding the strip through the frame, a flange roller and folding finger for bending the outer edges of the metal strip, a forming head for forming the strip into a pipe so that the outer edges of the strip mate, and a clinching roller and contra roller for compressing the mated edges to produce a spiral seam. The present invention improves this conventional apparatus by providing only two pairs of edge forming roller assemblies that cooperate to bend the left edge of the strip perpendicular to the strip, and the right edge of the strip into an upward facing, V-shaped channel with its outer edge perpendicular with respect to the strip. Five pairs of corrugation rollers are mounted on the frame adjacent to the edge forming roller assemblies.