baber/WOPTO huggingface dataset:
Patent GB-989932-A (GB)
Title: Sulpho-containing ethyl methacrylate and polymers thereof
Inventor: SHEETZ DAVID PATRICK
IPC: C08F20/10
Filed: 1963-11-20
Abstract: The invention comprises <FORM:0989932/C2/1> where X is hydrogen, ammonium, alkali metal or alkaline earth metal.  They are prepared by reacting methacrylic acid with 2-hydroxy-1,3-propanedisulphonic acid preferably in the presence of a polymerization inhibitor and at -20 DEG  to 100 DEG  C. and neutralizing to form a salt if desired.  The water formed may be removed azeotropically.  The compounds may be polymerized alone or with other monomers (see Division C3) and act as dye assisting adjuvants for the polymers (see Division B5); they can also be used to thicken aqueous emulsions such as natural or synthetic polymer latices (see Division C3).ALSO:The invention comprises polymers, including copolymers, of <FORM:0989932/C3/1> where X is hydrogen, ammonium, alkali metal or alkaline earth metal (for preparation see Division C2).  Polymerization may be effected in an aqueous medium, preferably using a free radical type catalyst.  In examples, an aqueous mixture containing acrylonitrile, methyl acrylate, the sodium salt of the invention, zinc chloride and Fe+++ and Cu++ ions is polymerized using H2O2.  The resulting polymer is spun (see Division B5).  Natural or synthetic polymer latices may be thickened by means of the polymers of the invention. In an example, a styrene-butadiene latex is thickened with the polymer of the disodium salt.ALSO:2-Sulpho-1-sulphomethylethyl methacrylate and its ammonium, alkali metal and alkaline earth metal salts are used as copolymerisable monomers to give polymer fibres of improved receptivity to basic dyes.  In examples sodium 2-sulpho-1-sulpho-methylethyl methacrylate is copolymerised with acrylonitrile and methyl acrylate and fabrics prepared from the resulting polymer are dyed with Calcozine Acrylic Violet 3R Basic.
Patent GB-1396116-A (GB)
Title: Knife sharpening mechanisms
IPC: B24B3/36
Filed: 1972-10-05
Abstract: 1396116 Sharpening machine cutters in situ EASTMAN MACHINE CO 3 Oct 1972 [3 Nov 1971] 45901/72 Heading B3D A knife-sharpening mechanism for a cutting machine 11 having an elongate knife 17, comprises an abrasive knife-sharpening belt 32 mounted on a carriage 21 movable longitudinally of the knife, means for moving the belt relative to the edge of the knife to sharpen a bevel on the knife, and belt guide means 50 on the carriage and including guide block means 48 for pressing the belt into engagement with the knife, the belt guide means being bendable to selectively vary the angle of the guide block means relative to the knife and being sufficiently rigid to remain in its selected position. The cutting machine 11 has a base 12 supporting a slender standard 15 which carries a housing 16 for a motor for reciprocating the knife 17 along a guide 18 in the standard. A presser foot 19 is mounted on a guide bar 20. The carriage 21 of the knife-sharpening mechanism is mounted on the lower end of the shaft 22 which has a double thread and is driven to raise and lower the carriage, a bar 23 stabilizing the movement of the carriage. The carriage is formed with a block 27 from which extend two legs 25, 26 at different levels. A pair of shafts 28, 29 are driven by gearing from the motor and each has a respective pulley 30, 31. Pulley 30 drives an abrasive belt 32 extending about a pulley 33 on a spring- loaded bracket 34 on leg 25, and pulley 31 drives a similar belt 31 extending about a pulley 43 on a spring-loaded bracket 44 on leg 26. The belts are urged into engagement with the knife 17 by wear-resistant coated surfaces 57, 58 of guide blocks 48, 49 on guides 50, 51 secured by welding or brazing to shoes 55, 56 urged about pins 62, 62<SP>1</SP> on the legs 25, 26 by springs 60, 61. The guide blocks 48, 49 can be bent relative to the guides 50, 51 by a tool (70, Fig. 7, not shown), to adjust the angle at which the belts are pressed against the knife. Set screws 77, 78 limit the movement of the shoes towards the knife in the event the belts should drop below the end of the knife. To prevent the guide block 48 from moving below the lower end of the knife, shoe 55 has a portion 75 formed with a finger 79 which engages serrations 80 on an arm 81 urged about a pivot 82 by a spring 84. The serrations are disengaged from the finger for re-setting by a cam operative at the upper end of the movement of the carriage.
Patent GB-1525267-A (GB)
Title: Apparatuses for measuring loads
IPC: G01G5/04
Filed: 1975-11-06
Abstract: 1525267 Load measuring apparatus STATHMOS AB 6 Nov 1975 46085/75 Heading G1W Load measuring apparatus comprises a series of load supporting elements, each element consisting of upper and lower plates which are rotationally symmetrical and define between them a zig-zag shaped space, a zig-zag shaped ring 4 of resilient material arranged in the space and resisting relative movement between the plates, and means in the nose and within the ring responsive to relative displacements of the plates towards one another. The measuring element shown in Figure 1 comprises a liquid 1 whose volume varies according to the load on the element. A ring 6 prevents excessive lateral movement of the upper plate. The spaces 1 of the elements are connected together, to a shock absorber, Figure 4 (not shown) and to a volume measuring device, Figure 3 (not shown) provided with zero and resistivity adjustments and overload signalling means. The elements may be incorporated into a vehicle, Figures 5,6 (not shown)or arranged to support a vehicle, Figures 8, 10, 11 (not shown), a platform, Figure 9 (not shown) or a hoist, Figure 7 (not shown). The modified element of Figure 12 includes an electrical displacement or pressure transducer.
Patent GB-1492555-A (GB)
Title: Heat exchangers
IPC: F28F9/16
Filed: 1974-10-25
Abstract: 1492555 Pipe couplings SUDDEUTSCHE KUHLERFABRIK JULIUS FR BEHR KG 25 Oct 1974 [10 Oct 1974] 46326/74 Heading F2G In a heat exchanger including a fin-and-tube block and a tank having a wall in which passages are provided for the tubes in the block, each tube is expanded after insertion into the wall so that the value of a first characteristic value K 1  lies between 1À2 and 8, where wherein L= length of common contact between each tube and a passage in which it is secured. S B  = Wall thickness of the wall in its original condition. S R  = Wall thickness of the tube before expansion.  B # = Tensile strength of wall material.  R # = Tensile strength of tube material. Preferable values for several further expressions are given, these latter involving various parameters including those above, those shown in the figure, and the respective moduli of elasticity of tube and passage materials.
Patent GB-1121866-A (GB)
Title: Crystalline block polyester/polycarbonate copolymers and process for the production thereof
IPC: C08G63/81
Filed: 1965-11-03
Abstract: Ordered, crystalline block copolymers are made by reacting (a) a crystallizable linear polyester of at least one aromatic dicarboxylic acid and at least one polymethylene glycol containing 2 to 10 carbon atoms, the polyester having an intrinsic viscosity of at least 0.4 with (b) a polycarbonate having a glass transition temperature of at least 120 DEG  C. and containing recurring units of formula <FORM:1121866/C3/1> where R is hydrogen or methyl, R1 is methyl, ethyl, n-propyl, isopropyl or butyl or R and R1 together with the carbon atom joining the benzene nuclei form a cyclohexane ring; the reaction being effected in the presence of an ester-interchange catalyst and in a liquid organic medium which is a solvent for the polyester and the polycarbonate, the ratio of polyester (a) to polycarbonate (b) being with the range 60/40 to 90/10 by weight. Specified polyesters are those of ethylene glycol and terephthalic acid, 2:6-naphthalic acid, or a mixture of 4:41-dibenzoic acid and 4:41-isopropylidene dibenzoic acid.  Specified catalysts are the zinc, cadmium, cobalt and manganese salts of C1- 7 aliphatic monocarboxylic acids whilst the specified solvent is nitrobenzene.
Patent GB-1452121-A (GB)
Title: Leaf springs
IPC: B60G11/02
Filed: 1973-10-08
Abstract: 1452121 Leaf springs S MOHL 8 Oct 1974 [8 Oct 1973] 46835/73 Heading F2S A leaf spring comprising a pack of leaves which do not taper in thickness but which reduce in overall length from one side of the pack to the other wherein the shortest leaf 9 or some of the shortest leaves 8, 9, are thinner and have shorter cantilever ends than the remainder of the leaves 1-7 which have equal thickness. The dimensions of the thinner leaf 9 or leaves 8, 9 may be chosen to ensure that it or they are not so highly stressed in use as the thicker leaves 1-7. A thickness of the thinner leaf 9 is mentioned as 80/85% of that of the other leaves 1-7, e.g. 13 mm and 16 mm respectively.
Patent GB-1240693-A (GB)
Title: Incubator temperature control system
Inventor: GORDON MARVIN
IPC: G05D23/19
Filed: 1968-10-02
Abstract: 1,240,693. Automatic temperature control systems. AIR-SHIELDS Inc. Oct. 2, 1968 [Oct. 9, 1967], No. 46850/68. Heading G3R. The air temperature in an incubator is controlled by a thermistor 36 which through circuits 37, 38 retard the firing angle of a pair of thyristors 42, 43 progressively controlling the current through a heater 14 until the temperature is stabilized at a set point. Another thermistor 45 in contact with a patient, reduces the heater energization when the body temperature rises above a determined value. A switch 49-51 enables the heater energization to be controlled by thermistor 45 alone, which switch is also operative when a temperature setting resistor 38a is in the maximum position. An overtemperature switch 27, 28 disconnects the heater, sounds an alarm 33, and energizes an indicator lamp 30. Air is circulated through incubator by a fixed speed fan 15. Indicator lamps 52, 53 may be provided. A volt meter M provides an indication of average heat supplied.
Patent GB-1031938-A (GB)
Title: Improvements relating to pneumatic conveying apparatus for stockings or the like
Inventor: HARVEY MICHAEL DAVID
IPC: B65G51/02
Filed: 1963-11-27
Abstract: 1,031,938. Pneumatic conveying of articles. DETEXOMAT Ltd. March 1, 1965 [Nov. 27, 1963], No. 46928/63. Heading B8A. A pneumatic conveying apparatus for conveying stockings 3 from a knitting machine 1 to a central station comprises a main duct 6 leading to the station communicating by branch ducts 5 with the machines 1, valve means 7 in each branch duct 5 and a control unit 13 for each knitting machine which operates the associated valve means 7 during a specified interval of time and then operates the next succeeding control unit automatically. The machines and associated control units ABC are identical, the last one being operatively connected to the first for cyclic operation. The knitting machine 1 is driven by a motor 2 under the control of switch 11 which can be switched off by solenoid 12. The valve 7 is opened by energization of solenoid 8. The control unit 13 comprises a motor 14 rotatably driving cams 15, 16, 17, 18 which operate switches 20, 21, 22, 23. In operation, momentary depression of button 24 starts the motor 14 turning, causing cam 15 to operate switch 20 which connects motor 14 to the power source by by-passing button 24. Solenoid 8 is energized for the same period as the motor 14 and a stocking 3 previously knitted is allowed to pass into the main duct 6. The switch 23 is closed by cam 18 just prior to one complete rotation of the camshaft, to momentarily energize the motor 14 of the next control unit 13B. After one revolution of the said cam-shaft the cam 15 opens switch 20 to de-energize the motor 14 and solenoid 8. Switches 21, 22 are closed during rotation of the cam-shaft and respectively connect via a button 28, a power supply 29 to solenoid 12 and a warning lamp 30 associated with the previously operated machine 1. The button 28 is manually depressed to stop machine 1 by opening switch 11 and to light lamp 30 when a faulty stocking is received at the station. A further lamp may be arranged to light with the energization of each motor 14. The four cams 15, 16, 17, 18 may be replaced by a single cam and the valve means 7 may be mechanically operated from the cam.
Patent GB-1219697-A (GB)
Title: Multiple speed angle demodulation systems
IPC: G11B20/06
Filed: 1969-09-24
Abstract: 1,219,697. Recording and playback. AMPEX CORP. 24 Sept., 1969 [25 Sept., 1968], No. 46935/69. Heading G5R. In a multiple-speed angle-demodulation system comprising a playback head 17 for detecting the axis-crossing of an angle-modulated wave recorded on a magnetic recording medium 12, means 18 for generating an axis-crossing pulse each time the head 17 detects an axis-crossing of the recorded wave, means responsive to the axiscrossing pulses by generating output pulses whose integrated pulse energy per axis-crossing is the same for all relative speeds between the head 17 and the medium 12, and means 41 responsive to the output pulses to detect a modulation signal carried by the angle-modulated wave, there are provided a pulse-generating means 33 for supplying each of the output pulses at a constant energy, means 34 for generating control signals representative of the relative speed between the head 17 and the medium 12, and means 28, 32 responsive to these control signals and the axis-crossing pulses to actuate the pulse-generating means 33 to generate a selected number of constantenergy output pulses for each generation of an axis-crossing pulse, this selected number being inversely proportional to the relative speed between the head 17 and the medium 12. This enables the proper demodulator output to be maintained at the various relative speeds between the head 17 and the medium 12 without the need to change the output pulse-forming capacitor 48. (For Figure see next page)
Patent GB-1530378-A (GB)
Title: Vehicle window display panes
IPC: C03C17/22
Filed: 1976-11-12
Abstract: 1530378 Reflective signs SAINT GOBAIN INDUSTRIES 12 Nov 1976 [13 Nov 1975] 47217/76 Heading G5C A vehicle window 1 is provided with a semireflective layer in the form of a design 2.
Patent GB-1363713-A (GB)
Title: Alkylanthraquinones and the production of hydrogen peroxide
IPC: C01B15/023
Filed: 1971-10-11
Abstract: 1363713 Hydrogen peroxide E I DU PONT DE NEMOURS & CO 11 Oct 1971 [9 Oct 1970] 47227/71 Heading C1A [Also in Division C2] Hydrogen peroxide is obtained by reductionoxidation of a substituted anthraquinone of formula wherein R1, R2, R3 and R4 are H or C1-8 alkyl groups. The hydrogenation-reduction may be carried out in a water-immiscible solvent in the presence of a platinum group metal or Raney nickel as catalyst. The H2O2 may be extracted by water, the working solution being returned to the reduction stage.
Patent GB-1222905-A (GB)
Title: Method of terminating a lamp filament
IPC: H01K1/16
Filed: 1969-09-25
Abstract: 1,222,905. Welding by pressure. CHICAGO MINIATURE LAMP WORKS. 25 Sept., 1969 [4 Oct., 1968], No. 47285/69. Heading B3R. [Also in Division H1] A method of securing a tungsten lamp filament 10 to a metal lead-in wire 12 comprises the following steps:- (1) Coating the end of the lead-in wire with gold; (2) Placing the filament across the coated end of the lead-in wire; (3) Placing a body 14 of gold on the filament and over the coated end of the lead-in wire; (4) Heating the body to a temperature below the melting point of gold but above the point at which diffusion of gold begins; and (5) Applying pressure to the body to cause the gold to surround the filament and form a diffusion bond with the coating on the lead-in wire. The body 14 is preferably formed as a ball 6-8 mils in diameter on the end of a 1À5 mil diameter wire 16, and the pressure is applied by a member 18 having a 2 mil diameter bore through which the wire passes. The lead-in wire 12 may be made of copper or dumet, and the temperature to which the body is heated may be in the range 600-650‹ C.
Patent GB-1196684-A (GB)
Title: Metal Working
IPC: B24C3/12
Filed: 1967-10-19
Abstract: 1,196,684. Endless conveyers. RANK XEROX Ltd. 19 Oct., 1967 [24 Oct., 1966], No. 47660/67. Heading B8A. [Also in Divisions B2 and B3] A blast cabinet 20 has a front wall 22 with a window 26, end wall 23 with an ingress port, end wall 24 with an egress port, and a roof 27 on which are mounted receptors 28 for holding a blast nozzle 30 so that it is directed towards a workpiece being transported through the cabinet. The workpieces 10 are xerographc drums having an aluminium base with a selenium coating which is to be removed. The drums are supported by two rows of rollers 34 mounted in cradles 38; the rear and forward cradles are respectively fixedly and adjustably mounted on plates 35 flexibly joined by links 36 to form a conveyer belt driven by a motor 32. The rollers 34 carry rings 41, e.g. of silicone rubber. As the workpieces pass through the blast the rings 41 on the rear rollers 34 contact a drive roll 45 driven by a motor 49 and gearbox 48, whereby the workpieces are rotated while being blasted. As they enter the cabinet the plates 35 ride into sliding contact with guide rails 50. A guide plate 51 biased by a rubber member 52 urges the plates 35 rearwardly to maintain the rings 41 on the rear rollers in contact with the drive roll. At the egress port is a gravity roll conveyer 16 for removing workpieces.
Patent GB-1214660-A (GB)
Title: Ball valve having progressive engagement of ball and yieldable seat
Inventor: PRIESE WERNER KLAUS
IPC: F16K5/06
Filed: 1968-10-08
Abstract: 1,214,660. Valves. HILLS-McCANNA CO. 8 Oct., 1968 [9 Oct., 1967], No. 47714/68. Heading F2V. In a ball valve having a spherical, centrally bored closure member 12, sealing of the closure member with respect to the valve housing is afforded by two annular yieldable polymeric material rings 40, 42, each of which rings encircles a respective one of the two valve flow passages (20, 22, Fig. 1, not shown) and is so shaped that in the substantially unstressed condition of the rings, annular gaps 56 and 56a are formed between the rings and substantially radially extending housing wall portions 58 and 58a respectively, and the ring sealing surfaces 62 and 64 engages the ball 12 only over narrow bands 94 and 96, which bands extend outwardly from the ball axis and from points 68 and 68a representing the positions of line contact in the absence of all stress on the rings (Fig. 8, not shown). In the event of the valve being closed, fluid pressure acting on the upstream side of the ball, for example from left to right as seen in the drawing, causes a decrease in the contact area 94, and an increase in the contact area 96 and a decrease in the size of gap 56a (Fig. 3, not shown). Such changes in the contact areas are facilitated by forming the connection between the ball and its driving shaft such that in the closed condition (Fig. 1), the ball is capable of being slightly displaced along the valve axis, and furthermore, by rendering the radii of curvature of the sealing rings equal to between 1 and 1À15 times the radius of the ball surface with the centres of curvature disposed within a distance from the seat axis which is limited in a direction towards the sealing surface to 0À104 times the ball surface radius and which is limited in a direction away from the seat surface to 0À09 times the ball surface radius.
Patent GB-1118303-A (GB)
Title: Heating control system
Inventor: PATTISON JOHN ROBERT
IPC: G05D23/27
Filed: 1964-11-27
Abstract: 1,118,303. Radiation pyrometers. BRITISH IRON & STEEL RESEARCH ASSOCIATION. Nov. 22, 1965 [Nov. 27, 1964], No.48280/64. Heading G1A. [Also in Division G3] The temperature of a body being radiantly heated is measured by a detector receiving radiation from the body through a filter which has maximum transmission for the radiation emitted by the body and a minimum transmission for radiation from the heat source reflected by the body. The measurement is used to control the radiant source. The detector 17, Fig. 2, is mounted on a diaphragm 21 behind the filter 16 mounted on a diaphragm 20. The diaphragms restrict the field of view and reduce the heat reaching the detector. A cooling water jacket 22 is provided. A spectrally selective reflective coating may be provided on the lens 15 instead of or in addition to filter 16. In a modification, a further detector is provided which receives radiation through a filter transmitting reflected radiation in preference to emitted radiation, the output of this detector being backed off against the output of the first to remove any residual error. If the temperature of the source remains constant during the heating cycle, this backing-off may be effected by a constant bias.
Patent GB-955067-A (GB)
Title: Improvements in and relating to scraper conveyers
IPC: B65G19/26
Filed: 1962-12-21
Abstract: 955,067. Endless conveyers. F. BRAUN, H. HALBACH, and G. BRAUN. Dec. 21, 1962 [Jan. 8, 1962], No. 48308/62. Heading B8A. A scraper conveyer comprises an endless chain 4 with flights 6, the ends 6a, 6b of which slide in recesses in the walls 2, 1 of a conveying trough with floor 3, carrying push-plates 10a, 10b pivoted at 9 at an angle to the flight 6. The push plates 10a, 10b are erected in the upper, conveying stretch A and rest on one edge in the recesses in the walls 1, 2 on the return stretch B. Each flight may alternatively carry a single push-plate with multiple heads, or there may be a combination of the two kinds of push-plates. Ends 13 of the push-plates 10 are turned over to prevent jamming in return stretch B if conveyer is reversed to clear a jam.
Patent GB-1292314-A (GB)
Title: Illumination arrangement for subjects which are to be recorded and/or reproduced in colour
IPC: G03B27/32
Filed: 1969-10-02
Abstract: 1292314 Systems of lighting SVERIGES RADIO AB 2 Oct 1969 [9 Oct 1968] 48531/69 Heading F4R [Also in Division H2] A system of lighting suitable for illuminating subjects to be televised or photographed in colour and in which the intensity of the light can be varied without significantly altering its spectral composition comprises a relatively high powered main lamp of the incandescent filament type which can be dimmed by decreasing the voltage at which it is run and a relatively low powered compensation lamp, also of the incandescent filament type, which can be made to run at a varying voltage, and consequently at a varying colour temperature, to compensate for the decrease in the colour temperature of the main lamp. As the voltage applied to the main lamp is decreased from the normal value to the point at which the lamp is extinguished, the voltage applied to the compensation lamp is first increased from the normal value to a maximum and then decreased to normal again. the rate of change being predetermined according to the observed characteristics of the lamp. In a first embodiment, Fig. 4, the main lamp 10 is controlled by a conventional rheostat 13 and the compensation lamp 11 is controlled by a specially wound rheostat 14 with the turns unequally spaced to produce the required variation in voltage, the sliders of the two rheostats being linked together. In a second embodiment (Fig. 5, not shown) the rheostats are replaced by voltage dividers which regulate controlled rectifiers in the lamp circuits, and in a third embodiment, Fig. 7, the voltage applied to the main lamp 10 is regulated by a voltage divider 50 which controls a pair of controlled rectifiers 35, 36 through a pulse-emitting device 54. This voltage is also applied to a transformer primary 40 the secondary windings 41, 42 of which are connected to respective fullwave rectifier bridges 43, 44 and thence to batteries of Zener diodes 70-74 and 80. These diodes control the voltage drop across a resistor 86 which in turn controls the voltage applied by an amplifier 64 to the pulse-emitting device 60 which regulates the voltage applied to the compensation lamp 11 by a pair of controlled rectifiers 58, 59.