Abstract: A machine for cleaning a plurality of floor maintenance pads by rotation and agitation in a tank of cleaning solvent. The pads are loaded onto a drive axle with gripper rings placed therebetween. After rotation in a solvent, the pads rotate against an agitator bar frame which contacts with both sides of the pads simultaneously. Preferably, the solvent drained from the tank can be returned to a container for reuse or discharged depending upon its level of contamination. Most preferably, the cleaning machine and the container of cleaning solvent are positioned together on a movable support stand.

Abstract: An ink supplying apparatus for a printing machine includes a plurality of groups of distributor rollers and an endless belt or belts extending through these groups of rollers to supply ink to a printing plate.

Abstract: A structure for a dome speaker includes a dome-shaped diaphragm formed of a high rigidity material and having an outer periphery, a voice coil bobbin secured at a top end thereof to the outer periphery of the diaphragm, a voice coil mounted about the bobbin, and a variation means in the bobbin for varying the resonance conditions of the diaphragm. The variation means includes at least one cut-out portion provided at the top end of the bobbin and a sheet which closes the cut-out portion. Preferably, the diaphragm is made of a nitrified titanium alloy and the sheet is made from a material softer than the bobbin. The cut-out portion may have a width from about 7 to about 50 percent of the total circumferential length of the bobbin.

Abstract: A flexible continuous film is comprised of a physical admixture of a polypeptide, a plasticizer and a film-forming flexible polymer. When the film is moistened, the polypeptides exude therefrom.

Abstract: A direct printing method and apparatus includes one or a plurality of machines for printing indicia in single or multiple colors on a substrate, such as a cap or a T-shirt. The method involves forcing ink in the form of a viscous composition under pressure through a pattern in a screen in contact with the substrate. The apparatus includes means for holding the substrate, means for providing the contact between the screen and the substrate, and means for supplying air to the ink for a time and at a pressure appropriate to force the ink through the screen pattern to form a non-distorted detailed design on the substrate.

Abstract: A moisture vapor permeable sheet material is comprised of a homogeneous admixture of a synthetic polymer material and a protein derivative. The sheet material is moisture vapor permeable and non-penetrable by liquid water. The sheet material additionally can have coated thereon a pressure sensitive adhesive which is comprised of a synthetic organic polymer adhesive and a soluble protein derivative in solid solution. Sheet material is formed by providing a homogeneous fluid solution of a soluble protein derivative and a synthetic organic polymer in a solvent. The protein derivative has a pH level compatible with the pH level of the organic polymer. Film is formed from the homogeneous fluid solution and the solvent is removed from the film to form the sheet material which is moisture vapor permeable. When the sheet material includes an adhesive, the adhesive is coated as a fluid solution in a solvent on one side of the sheet material.

Abstract: In the process for recovering arsenic trioxide from scrubbing water used to scrub the flue gas of sulfide ore smelting, the crude arsenic trioxide crystals collected from the scrubbing solution which contains plaster as an impurity is purified by treating it with hydrochloric acid of a concentration of 50-150 g/l at a temperature not higher than 30.degree. C.

Abstract: A process of obtaining spectra of daughter ions which are produced by collision of sample ions with neutral molecules for dissociating the sample ions in a collision chamber disposed in an ion path to thereby provide a structural analysis of organic compounds. To carry out this process, a mass spectrometer is used which has mass spectrometric units located before and after the collision chamber. The spectrometric unit located behind the chamber has superimposed magnetic field B and electric field E perpendicular to the magnetic field. Daughter ions having a mass m.sub.x produced from parent ions having a mass m.sub.0 inside the chamber are detected and measured by sweeping the voltage Vd.sub.x for producing the electric field or the intensity B.sub.x of the magnetic field singly or sweeping both in an interrelated manner so as to satisfy the relation ##EQU1## where V.sub.00 is the voltage for producing the electric field used to detect the parent ions having infinitely large masses, B.sub.

Abstract: A plate holding roller particularly for flexographic printing, wherein the roller is formed with a groove provided with a securing means extending over one half the roller length, the remaining roller half has a circular cross-section longitudinal pocket therein, said pocket receives a supporting body pivotally therein which is also formed with a longitudinal groove having a means of securing the plate ends, and said supporting body can be released from and locked into its relative position to the plate holding roller.

Abstract: In the continuous vapor deposition coating of a metal strip, the coating amount can be rapidly changed by keeping the vapor flow at acoustic velocity and changing the cross-sectional area of the vapor path.

Abstract: A tilt stage that tilts about Y axis perpendicular to the optical axis of an electron beam which is called "the Z axis" herein is mounted to the front cover of a specimen chamber. A Z-axis stage capable of moving in the direction of Z axis and an X-axis stage capable of moving in the direction of X axis perpendicular to Y and Z axes are mounted on the tilt stage. A specimen holder for holding a specimen can be located at any desired position relative to the electron beam by the movements of these stages. Two driving shafts are disposed concentrically about the Y axis, i.e., their common axis. Driving mechanisms for independently driving the driving shafts along the Y axis are mounted to the front cover of the specimen chamber. The movements of the driving shafts are transmitted to the Z-axis stage and the X-axis stage via two levers whose pivots are supported on the tilt stage.

Abstract: Apparatus for connecting together two structural elements of a building framework which includes a slot portion attached to one of the structural elements at a location where the two elements are to be connected together and a wedge portion attached to the other structural element. The wedge portion is moved within the slot portion until the slot and wedge portions securely engage each other and join the two structural elements together. A building constructed of elements joined together solely by means of the slot and wedge portions is also disclosed.

Abstract: A flexible continuous film is comprised of a physical admixture of a polypeptide, a plasticizer and a film-forming flexible polymer. When the film is moistened, the polypeptides exude therefrom.

Abstract: A transmission electron microscope having objective lens comprising upper, middle and lower magnetic pole pieces installed inside a yoke enveloping the first and second excitation coils. The polarity of the first magnetic field between the upper and middle magnetic pole piece is changed according to the selection of the two observation modes for an electron microscope image and for a converged beam diffraction pattern. However, the position of a specimen located at the midst of the second magnetic field between the middle and lower magnetic pole pieces is fixed during said two operation modes, so that analysis for a crystalline material of a very small area in the specimen is carried out by easy operation.

Abstract: A hot strip mill having a final reducing stand and runout cooling means downstream of the reducing stand includes an incubator capable of coiling and decoiling the hot strip. The incubator is located intermediate the runout cooling means. In a preferred form the final reducing stand is a hot reversing mill. A second incubator and/or a temper mill and/or a slitter may be positioned downstream of the first incubator. The method of rolling includes isothermally treating the strip within a predetermined time and temperature range in the incubator prior to subsequent processing. The subsequent processing may include any one or more of the following: further deformation by cold rolling, temper rolling or cooling at a desired heat loss rate.

Abstract: Improved Zn-Ni-alloy-electroplated steel sheet can be prepared by electroplating steel sheet with an acid electroplating bath containing Zn ions, Ni ions and a small amount of titanium ions, preferably after pre-electroplating with an electroplating bath containing Zn ions and a larger amount of Ni ions and heating the plating sheet in the presence of water.

Abstract: The invention relates to a can-type housing made of metal, as a semi-finished product, such as is used, for example, for electrolytic capacitors. Furthermore, the invention relates to a process and a device for reducing the diameter of and flanging such a can-type housing. In the conventional way, the diameter of a can-type housing of this type was reduced from below in the direction of the upper open can edge. As a rule, flanging is carried out by a separate device. The invention improves the conventional measures by rewidening under dry conditions the can-type housing pre-widened under wet conditions. According to the process, the can-type housing provided with the housing widening is then closed from the can edge axially downwards so as to reduce its diameter, this process step being supplemented, in addition, by a further flanging step carried out in the same device.

Abstract: A feldspar containing protective composition for paving, coating, sealing and the like includes a dry component mixed with a liquid component in an amount necessary to produce a desired consistency of the composition. The dry component includes about 40-50% by weight of feldspar aggregate, about 35-40% by weight of a mineral powder, such as a pottery grade feldspar, up to about 15% by weight of masonry mortar and up to about 7% by weight of cement. The total amount of masonry mortar and cement is at least about 10% by weight of the dry component. The liquid component is formed of an adhesive copolymer in an aqueous emulsion, such as ethylene vinyl acetate.

Abstract: A breaker apparatus having a base including spaced parallel side members and a bottom plate connected to the lower edge of each side member. A fixed king pin extends between the side members and a breaker arm is rotatably mounted on the king pin. A hydraulic cylinder is pivotally mounted on the base, and the rod extending from the cylinder is pivotally connected to the rear end of the breaker arm so that extension of the rod from the cylinder pivots the breaker arm about the king pin to rotate the forward end of the breaker arm downwardly to contact a metal piece lying on the upper forward corners of the side members.

Abstract: A sheet material for mounting flexible printing plates to the drum of a printing press includes a base film, a flexible foam uniformly coated on the base film, and a pressure sensitive adhesive coated on both the base film and the foam. The cohesion of the base film and the foam, the adhesion of the base film to the foam, and the adhesion of the adhesive to the base film and the foam is greater than the adhesion of the adhesive to the flexible printing plate and to the drum of a printing press. When the sheet material is removed from the printing plate and the drum, the foam, the base film, and the adhesive remain an integral sheet. A method for preparing and using the sheet material is also disclosed.