baber/WOPTO huggingface dataset:
Patent GB-363971-A (GB)
Title: Process of eliminating sodium carbonate from technical solutions of potassium carbonate
IPC: C01D7/24
Filed: 1931-07-09
Abstract: Solutions of potassium carbonate are freed from sodium carbonate by a process in which a solution saturated with respect to potassium carbonate and having a concentration corresponding to about 50 DEG B<\>ae. is cooled to at least about -15 DEG  C., say -15 to -20 DEG C., and separated from the deposited sodium carbonate.  The filtered liquor may be concentrated further and crystallized.  Any chlorides present are deposited simultaneously with the sodium carbonate.
Patent GB-641969-A (GB)
Title: Improvements in dough folding machines
IPC: A21C9/08
Filed: 1947-07-23
Abstract: 641,969. Making turnover rolls &c. BETTER PRODUCTS MACHINERY CO., Inc. July 23, 1947, No. 19818. Convention date, March 1, 1940. [Class 87 (ii)] A dough piece is fed down a shoot 37 on to an endless flexible belt 30, Figs. 1, 5 and 6, which runs over a table 31, and is flattened by a roller 40 into a somewhat thick dished disc. The disc is then folded by being carried by the belt between three succeeding pairs of rollers 35, 34, 33, which distort the belt. The rollers are rotatably mounted on the table 31. The first pair of rollers 35 are frusto-conical and fold the belt and dough to a V-shape. The second pair 34 compress the folded dough disc. The third pair 33 are adjustably inclined and turn the upright folded disc down towards the belt. The distance apart of the rollers of each pair may be adjusted as by screw means. A blade 50 scrapes dough from the roller 40. Oiling devices 46, 49 feed vegetable oil to roller 40 and the flattened dough pieces. The Specification as open to inspection under Sect. 91 describes also a second machine, Figs. 8 and 12-15 (Cancelled), in which the table 31 is dispensed with, and there are two endless belts 103, 70, the belt 103 being driven and the belt 70 lying on and being carried around with the belt 103. There are four rollers 40, 82, 83, 81 all disposed above the belts. Roller 82 folds one edge of the belt 70 up, roller 83 completes the folding of the dough piece and roller 81 lightly presses the two folded halves of the dough piece together. Scraping and oiling devices are provided as in the first machine. This subject-matter does not appear in the Specification as accepted.
Patent GB-1473532-A (GB)
Title: Control of fm beat distortion
IPC: G11B3/00
Filed: 1974-05-07
Abstract: 1473532 Discrete quadraphonic systems D H COOPER 7 May 1974 [10 May 1973] 20052/74 Heading H4R In a system for producing multi-channel recordings, e.g. for quadraphonic systems, in which one signal recorded is composed of a base band signal and an angle modulated sub carrier signal, the sub carrier signal is fed through an equalizer, having substantially the same characteristic as that applied to the base band signal, before application to the angle modulator, so as to reduce cross talk and intermodulation distortion in the reproduced signal. As described for a quadraphonic disc recording, signals SLF, SRF, SLB, and SRB, are fed through a matrix 2, Fig. 8 to provide signals TT and TQ are further matrixed to provide signals TT + kTQ and TT - kTQ which are fed to respective equalizers 11a and 11b which have characteristics providing a - 6dB/octave slope up to 100 Hz, providing frequency modulation when angle modulated, flat characteristic from 100 to 500 Hz, providing Phase modulation, - 6dB/octave from 500 to 2100 Hz (FM), flat from 2100 to 6000 Hz (PM), and - 6dB/octave above 6000 Hz (FM), which is a characteristic up to 6000 Hz substantially identical to the RIAA recording characteristic. The equalizer outputs are angle modulated and mixed, at 5, with the base band signals TL and TR received from recording equalizers 4 before feeding to the recording amplifier 7. The use of angle modulated signals TT+kTQ and TT - kTQ is the subject of Specification 1,473,533. In modifications, the TQ signal can be high pass filtered at about 130 Hz before combination with the TT signal in matrix 10, with the other signals fed through phase shifting networks to preserve the relative phases, Fig. 10 (not shown), or the TQ signal can be fed through a limiter (14) Fig. 12 (not shown) or an equalizer (15) Fig. 13 (not shown) which reduces the level of low frequencies Fig. 14 (not shown). At the reproducer Fig. 16 the sub carrier signal is separated out by a filter 25, demodulated at 26 and passed through inverse equalizers 27a and 27b before dematrixing at 28 the resulting TQ signal can be passed through a complementary expander or equalizer 29 if a compressor or equalizer was employed at the recorder before the signals are dematrixed at 24 for reproduction as four discrete signals.
Patent GB-1419576-A (GB)
Title: Manufacture of melamine
IPC: C07D/
Filed: 1973-04-27
Abstract: 1419576 Manufacture of melamine BADISCHE ANILIN- & SODA-FABRIK AG 27 April 1973 [28 April 1972] 20073/73 Heading C2C Melamine is synthesized catalytically from urea by thermal cracking in a fluidized bed, the heat required being supplied indirectly by means of heat exchangers located within the fluidized bed at a point below where the urea is fed into the reactor. Known catalysts, e.g. γAl 2 O 3  are used and the synthesis may be effected by thermal cracking of urea in a fluidized bed followed by catalytic conversion of the resulting isocyanic acid and ammonia to melamine in a separate reaction zone, or in a single stage process. In the latter case, the same fluidized bed is used for thermal cracking and catalytic conversion. An object of the invention is to minimize corrosion of the heat exchangers arising from the action of the urea thermal decomposition products.
Patent GB-1116680-A (GB)
Title: An electrical power or energy meter
IPC: G01R11/36
Filed: 1967-05-01
Abstract: 1,116,680. Selective signalling. SIEMENS A.G. 1 May, 1967 [29 April, 1966], No. 20081/67. Heading G4H. [Also in Division G1] The rotor of an electricity meter coupled to an installation which may experience either an inflow or an outflow of power would normally reverse direction when the condition changes from inflow to outflow or vice versa. The invention provides (see Division G1) a metering system for such an installation in which, when such a reversal occurs, the connections to the current or voltage drive magnet are automatically reversed to restore forward running, but the indicator previously in use is switched out and a separate indicator is switched in. Fig. 2 shows the system for detecting the initial reversal and for operating switches which restore the forward running of the rotor and the change of indicator. The rotor rotation is sensed by a pair of Hall Effect devices arranged to provide signals which are 90 degrees apart. The two sets of signals are fed to respective bistable stages 14 and 15 which in turn feed square output pulses both directly and by way of respective inverter stages 16 and 17 to a stage 18 which differentiates the inputs. The stage 18 thus receives quadrature spaced inputs, each of which are differentiated. The pattern of coincidences between a given non-differentiated signal and the differential of another signal is dependent on the sense of rotation of the rotor, and this property is exploited to operate an output A0 for one sense of rotation and an output A1 for the other. On reversal, relay 9 is operated to restore forward running, but the connection to relay 9 is via a stage 19 which has a memory function to ensure that the restoration of forward running by the relay 9 is not detected by the system as a re-reversal requiring a second change of indicator. The indicators, which may be remote, are driven by pulses derived from the quadrature spaced pulses fed to stage 18 but passed through stages 21 to 26 where the pulses are shaped to a predetermined amplitude and duration. It is arranged that, in response to a reversal detected at 18, the final output pulse train is positive or negative going in dependence on whether an inflow or an outflow condition exists. Alternatively, both inflow and outflow conditions may produce pulses of the same polarity but different D.C. level.
Patent GB-182011-A (GB)
Title: Improvements in or in connection with the gathering of glass
IPC: C03B7/22
Filed: 1921-07-27
Abstract: 182,011. Blanc, H. July 27, 1921. Gathering.-A method of gathering molten glass for delivery to forming-machines consists in cooling part of the metal in a tank, withdrawing part of the cooled metal, and then reheating the metal so withdrawn to restore its fluidity so that it flows into a ladle or other delivery device. The apparatus comprises a helical coil of tubing 4 which is immersed in the metal in a tank 1 and through which water can be circulated to chill the metal adjacent to the coil to form a well or gathering-space. The gatherer consists of a similar coil of tubing 12, but of small diameter, which is suspended from a block 15 having a pivot journaled in a slot 18 in a disc 8. The disc is supported above the crown of the tank and oscillates about a shaft 9. A pot 19 is supported above the surface of the metal by a wall 2 built up from the floor of the tank. In operation, the gatherer 12 dips into the metal, as shown, and the metal is chilled about the tubes and forms a crust which encloses more fluid metal. The movement of the disc Lifts the gatherer over the pot, and the block 15 moves in the slot 18 thus giving the gatherer a jerk which detaches the metal which drops into the pot 19. Further, the hot gases in tank melt off any metal adhering to the gatherer. After falling into the pot, the metal eventually flows under a bridge 21 and over a spout into a ladle or other delivery device. Instead of using the disc 8, the gatherer may be reciprocated vertically and also rotated about a vertical axis. The coil 4 for forming the gathering-space may be replaced by two flat coils of tubing and two plain partitions placed at right angles to one another.
Patent GB-427850-A (GB)
Title: An improved manufacture of enamel-opacifier
IPC: C03C1/04
Filed: 1934-07-09
Abstract: 427,850. Enamels. ARNOLD, C., 11, Southampton Buildings, Chancery Lane, London.-(Harshaw Chemical Co. ; Elyria, Ohio, U.S.A.) July 9, 1934, No. 20156. [Class 56] An opacifier for enamels is made by fusing together an oxide of antimony, titanium or zirconium oxide, or a compound which provides the oxide, and a substance which yields an oxide of zinc, barium, calcium, beryllium, strontium, magnesium, cerium, manganese, lead, or copper, with an alkali metal if desired. The proportions of the substances used correspond to the general formula 2MO, 3RO2, Sb2O5' where R represents titanium or zirconium and M represents the other metals mentioned above. A suitable mixture consists of about 33À1 per cent by weight of TiO2, about 44À5 per cent by weight of Sb2O5, and about 22À4 per cent by weight of ZnO.
Patent GB-714471-A (GB)
Title: Improvements in and relating to elastic hydrocarbon-substituted polysiloxanes
Filed: 1952-08-11
Abstract: A vulcanizable polysiloxane composition suitable for use as insulating materials, gaskets and shock absorbers comprises (1) a heatcurable polysiloxane containing 1.95 to 2.2 hydrocarbon radicals per silicon atom, and (2) 0.1 to 4 per cent. by weight of the polysiloxane of ammonium carbonate as curing catalyst. Fillers such as ferric oxide, titania, talc, zinc oxide, silica and silica acrogels and in amount, e.g. of 10-90 per cent. of the total weight of the siloxane and filler, and other curing catalysts such as benzoyl peroxide, t-butyl perbenzoate and zirconyl-nitrate in amount, e.g. of 0.1 to 5.0 parts per part of ammonium carbonate may be added. The compositions may be converted into elastomers by moulding under pressure, with heat if desired, and be further cured at room temperature or at 25 to 50 DEG C.  In examples (1) a mixture of a viscous dimethylpolysiloxane, silica aerogel and ammonium carbonate, is moulded at room temperature; (2) the mixture of example (1) with the addition of benzoyl peroxide, is compounded on rolls and pressed in a cold mould.  Specifications 592,018 and 594,481 are referred to.
Patent GB-240137-A (GB)
Title: Improvements in machines for drilling drawing dies or stones, in particular diamond dies
IPC: B28D5/02
Filed: 1925-08-11
Abstract: 240,137. Patent-Treuhand-Ges. fiir Elektrische Gl³hlampen. Sept. 22, 1924, [Convention date]. Dies.-In a machine for drilling drawing-dies, the work-holder is fed to the rotating drill by a spring and is intermittently retracted by a friction device so that the amount of movement and dwell at each stroke are independent of the penetration of the drill into the work and of the wear of the drill. The die h, which is secured to the holder g by soldering in the usual manner, is pressed towards the drill e by an adjustable spring l and is retracted by a finger m adjustably mounted on a lever n which is acted upon by cams so as to have a combined vertical reciprocation and oscillation about a fixed pivot n<2>, these motions being opposed by springs o, t, respectively. The workholder is supported on V-shaped rollers f. The cam p which acts directly on the portion n<3> of the lever to oscillate it is rotatably adjustable on an eccentric sleeve P<1> keyed to the cam-shaft s in order that the total throw and position of maximum height may be varied. A scale s<2> on the sleeve facilitates adjustment and a screw p<2> serves for locking. The. cam for effecting the vertical movement is formed in two identical parts q, q<1>, the former being keyed to the shaft and the latter rotatably adjustable thereon to vary the length of crest of the combined cam. A scale s<1> and locking screw q<2> are provided. 'The cam q, q<1> acts upon a lever u<1> which raises the lever n by means of a screw v<1> against the action of a spring u<2>, and a cam w, actuated by a Lever x, serves to maintain the parts in raised position for adjustment of the work. In modifications, the finger m may be underneath or at one side of the work-holder; and it may be replaced by jaws actuated automatically to grip and release the holder or by a ball-ratchet device.
Patent GB-908402-A (GB)
Title: Stripping device for knitting machines
IPC: D04B39/00
Filed: 1960-06-09
Abstract: 908,402. Knitting-machines. PALIZ-HOLDING A.G. June 9, 1960 [June 18, 1959; Sept. 11, 1959; Sept. 19, 1959], No. 20334/60. Class 74 (2). A flat-bed machine, for example a parallel bed machine, is provided with means for holding down the loops on the needles as the needles are advanced prior to receiving the yarn from a yarn guide and also for holding the loops down after the knitting of a course when the needles are again slightly elevated. In one example the means comprises two wire members 49, 50 each secured to the cam lock of the machine and each adapted to be pivotally swung at the commencement of each traverse of the lock so as to bring an extended portion 49b, 50b into or out of an operative position alternatively depending on the direction of movement of the lock. This portion 49b, 50b serves to hold the loops on the needles down as the needles are advanced to receive yarn from a guide prior to knitting the yarn and as illustrated by the portion 49b in Fig. 1. The wire members also have a looped portion 49d, 50d which is effective in pressing down on the loops extending between the needles of a parallel bed machine in both directions of traverse of the cam lock save that in one direction the portion 49d, 50d serves to pass the loops down prior to the needles being raised to receive a yarn for knitting as illustrated by the portion 49d in Fig. 1 and in the other direction serves to press the loops down after the yarn has been knitted as is illustrated by the portion 50d in the Figure. Instead of the portion 49d, 50d there may be provided a plate which is pressed resiliently against the loops extending between the needles of each bed or, alternatively, a wheel mounted on an arm which is urged downwardly by a spring to press the wheel against the loops. Specification 867,678 is referred to.
Patent GB-728077-A (GB)
Title: Combined pump and driving motor assembly
Inventor: POLLAK FREDERICK
IPC: F04D13/06
Filed: 1952-08-14
Abstract: 728,077. Centrifugal pumps. SIGMUND PUMPS, Ltd. July 17, 1953 [Aug. 14, 1952], No. 20436/52. Class 110 (1). In an assembly comprising a pump and its electric driving motor, the motor casing comprises a unitary part including the whole or most of the axially extending portion of the casing and its end cover remote from the pump and a second part comprising a separable end cover at the end adjacent the pump, and the second part is provided with an axially directed hollow extension to the free end of which is attached the pump casing, a base support being integral with or fixedly connected to the separable end cover and the hollow extension. The electric driving motor 1 of a centrifugal pump 2 is housed in a casing comprising a main part 6 and a separable end cover 7. The latter has an open extension 8, to the free end of which is attached the pump casing 9. A base support 5 is integral with the end cover 7 and its extension 8. After removal of the pump impeller 3 from the shaft 4 and removal of bolts 14, the motor, with its casing part 6 and the shaft 4, can be removed without disturbing the base support 5. Similarly, the pump casing 9 can be removed after removal of bolts 15. The motor is cooled by a fan impeller 27 which draws in air through holes 28 and discharges it through an annular passage 29. The pressure in the passage 29 is communicated by way of ducts 31 to the space 32 between a bearing 17 and a seal 24, to prevent pumped fluid from seeping along the shaft towards the bearing 17 and the motor. In a modification, the pressure is communicated instead to a space between the seal 24 and an apertured disc which surrounds the shaft with a clearance, so that air escapes from the space through the clearance to oppose the seepage of fluid along the shaft.
Patent GB-890112-A (GB)
Title: Improvements in razor blade dispensers
Inventor: NICHOLSON JOHN WINDSOR
IPC: B65D83/10
Filed: 1957-06-28
Abstract: 890,112. Razor blade magazines; packaging. GILLETTE INDUSTRIES Ltd. June 30, 1958 [June 28, 1957], No. 20486/57. Classes 18 and 94(1). In a dispensing magazine for unwrapped razor blades in which the blades are stacked in staggered relationship for ejection from opposite ends of the magazine alternately, one or more pads of foamed polyurethane engage and exert pressure on the blades. Each pad may be impregnated with an anti-corrosion agent. The magazine may be of moulded plastic or of cardboard and has a body portion 10 within a sleeve 11. Each blade is located on one of two ribs 20, 21 and when moved by a thumb inserted through an aperture 38 engages two ramps 30 positioned on each side of the appropriate rib 20 or 21 and is directed through one of two openings 36, 37. The polyurethane may be a continuous surround preventing the ingress of dust and moisture or may comprise four separate pads 50. The polyurethane may engage the cutting edges of the blades. Used blades can be inserted into the back of the magazine through openings 55. When the magazine is made of cardboard, cut out tongues projecting upwards form the blade-locating ribs and the plastic sponge engage the sides as well as the top of the stack of blades to prevent lateral displacement. In a second embodiment, comprising a base 110 and a cover 111 of moulded synthetic resin, a sheet 116 of sponge plastic presses the blades upwards against projections 117. As the blade is withdrawn, it is guided by a rib 114 or 115 and as it approaches one end of the magazine a ramp 124 or 125 directs the blade towards one of the exits 122, 123 and, subsequently, the ramp engages the slot in the blade and continues to guide it. Used blades inserted through holes 130 are retained beneath parts 134. Specifications 694,333 and 721,051 are referred to.
Patent GB-1336760-A (GB)
Title: Electrical switch arrangement
IPC: H01H1/20
Filed: 1971-04-19
Abstract: 1336760 Construction of levers SIEMENS AG 19 April 1971 [29 June 1970] 20599/71 Heading F2K [Also in Division H1] To avoid the used for close tolerances in manufacture or for manual adjustment after assembly, a switch having mechanical means for transmitting movement to a movable contact member has a portion of said means readily deformable beyond its elastic limit and stop means are provided to ensure that the movable contact member is not moved by said means beyond a predetermined position, whereby the switch can be automatically adjusted in that on extremity of movement is defined by non- elastic deformation of said portion when the mechanical means attempts to move the contact member beyond said predetermined position. The stop means may be built into the switch or may be a removable jig; in the first case an additional removable distance piece is temporarily inserted between two interengageable surfaces to compensate for the elastic part of the deformation, or the contact system may be subsequently displaced to accommodate residual elasticity; in the second case the said predetermined position is defined by the jig to provide the compensation. As shown, a bridging contact member 5, co-operating with fixed contacts 1 to 4, is carried in a slider 6 arranged to be moved against the action of a spring 17 by a lever 10 having a projection 12 for following rises 13 on a cam drum 14. Stops 16 limit the upward movement of slider 6 by engaging ribs 17 thereon, and a notch 15 provides lever 10 with a deformable region. The switch is thus self-adjusted upon operation of lever 10 by a cam rise 13, a foil of appropriate thickness being inserted between rise 13 and follower 12 to compensate for the elastic part of the deformation of lever 10.
Patent GB-273232-A (GB)
Title: Improvements in or relating to electric motors
IPC: H02K25/00
Filed: 1926-08-20
Abstract: 273,232. Andis, M. June 26, 1926, [Convention date]. Machines with unwound iron armatures; cores. -In electric motors for horse clippers &c. of the type in which an unwound iron armature rotates between the poles of a field-magnet the circuit of which is periodically broken, the field magnet 10 is of elongated shape as shown in Fig. 3, and the armature is formed with a central portion 17 and arcuate pole-pieces 18, 19 extending in the direction of rotation. When the central portion 17 of the armature is between the poles of the field magnet the circuit is broken by a cam 27, Fig. 2, on the motor spindle 16 operating a lever 23 carrying a contact 37 against the action of a spring 29. The spring bears against a stud 50 carried by a lever 43 actuated by a thumb-piece 47 and by moving the stud the tension of the spring may be adjusted, or the contacts allowed to separate and the motor thus stopped. The thumb-piece 47 also carries a pawl 48, Fig. 4, by means of which a ratchet wheel on the spindle 16 can be rotated and the motor started. Specification 273,231, [Class 131, Toilet &c.], is referred to.
Patent GB-426908-A (GB)
Title: Improvements in and relating to cinematograph apparatus
Filed: 1934-07-13
Abstract: 426,908. Combined sound-reproducing and kinematograph apparatus. BAUER GES., E., 10, Neckarstrasse, Untert³rkheim, Stuttgart, Germany. July 13, 1934, No. 20635. Convention date, July 17, 1933. [Class 40 (ii)] A kinematograph has an aperture f in the casing a, over which a self-contained sound reproducing apparatus having a flange h may be applied, the sound apparatus being provided with an inwardly projecting gearwheel q which is adapted to engage with a gear r on the shaft b of the film-driving gear of the kinematograph. The sound apparatus comprises a lamp casing i, optical system k, photoelectric cell casing m and record feeding rollers driven by shafts n, o, geared to a wheel on the shaft p carrying the gear q. The kinematograph may be used independently by removing the sound apparatus and closing the aperture f by a plate. 426,908.