baber/WOPTO huggingface dataset:
Patent GB-1088821-A (GB)
Title: Improvements in and relating to square root exacting networks
IPC: G01F1/36
Filed: 1964-11-16
Abstract: 1,088,821. Electric analogue calculating. BAILEY METER CO. Nov. 16, 1964 [Nov. 14, 1963], No. 46610/64. Heading G4G. A square root circuit (Fig. 3) comprises a difference amplifier 18 receiving at one input an input signal e<SP>1</SP>in from a preceding summation stage and a multiplier stage receiving an input signal e in  (Fig. 2, not shown); the difference amplifier output being amplified at 19 to produce an output signal eg. A squaring circuit 21 is connected from the output of the amplifier to the other input of the difference amplifier, and comprises NPN transistors 24, 25 with parallel collectors and emitters respectively energized directly from positive source 41, and over resistor 39 from negative source 40, and bases 24b, 25b respectively energized with the output signal e o  and a constant amplitude sawtooth from source 27. The circuit is biased in such manner that the common emitters develop a signal representing the greater of the instantaneous values of the signals applied to the bases, which is applied directly to the base of PNP transistor 30 having collector connected direct to source 40 and emitter connected over resistor 42 to source 41 to develop signal fed over low pass filter 31, 32 to the other input of the difference amplifier 18. The output of the squaring circuit represents alternately (Fig. 4) the output level 45 of amplifier 19 and the peaks of the sawtooth 43 when these exceed level 45; the mean level being derived therefrom by the low-pass filter. It is shown that this level is given by:- where e 0  max and e 0  min are maximum and minimum values of the output of the complete square root circuit between which the sawtooth excursions extend, so that the square root circuit output is the sum of a constant term and a term representing the square of the difference between output signal e 0  and a base signal e 0  min, where e 0  - e o  min = K 1 #e in - e in  min., where K 1  is a multiplication constant and e in  is the minimum value of the input to the square root circuit representing a constant K 2 . Thus the input signal may represent a variable whose square root is to be obtained, without necessarily falling to zero with such variable; which may, e.g., be the pressure difference arising from fluid flow across an orifice. The multiplier (Fig. 2, not shown) is adjustable to give a required value of K 1 , and a preset direct voltage is introduced into the summation stage and is adjustable to give a required value of K 2 . The network is thus operable over a required range of input signal e in  referred to a required level corresponding to zero, to give a different required range of output signal (e 0 ). The PNP and NPN transistors in the squaring circuit may be interchanged. More fully developed transistorized square root circuits compensate for temperature and circuit variation are set forth (Figs. 5, 6, not shown) adapted for operation on reverse and forward variations of the input signal.
Patent GB-1024859-A (GB)
Title: An oil-fired burner assembly for mastic asphalt heaters and the like
Inventor: JENNINGS THOMAS PETER
IPC: F23D99/00
Filed: 1963-11-26
Abstract: 1,024,859. Tar boilers. PHOENIX ENGINEERING CO. Ltd. Sept. 15, 1964 [Nov. 26, 1963], No. 46703/63. Heading E1T. [Also in Division F4] A mastic asphalt heater is fitted with an oilfired burner assembly comprising a refractory lined tube 4; forming the combustion chamber for gases received from a burner situated at one end, the other end of the tube 4 being connected to a perforated heat resistant steel tube 10 Fig. 1 (not shown) The refractory lined tube 4 and perforated tube 10 may be in alignment or may be connected by a U-shaped refractory lined tube such that they are parallel, Fig. 3 (not shown). The burner assembly is supported within a casing 1 such that the perforated tube 10 is directly below the centre of a tank 2 for the mastic asphalt. A secondary air inlet 8 is provided in a housing 7 connected to the tube 4, and containing a refractory block 6 directing the burner gases into the tube 4.
Patent GB-1076869-A (GB)
Title: Improvements in or relating to a welded watch pallet assembly
IPC: G04B15/14
Filed: 1965-11-05
Abstract: 1,076,869. Watch escapements. C. RUETSCHI. Nov. 5, 1965 [Nov. 5, 1964; Sept. 23, 1965], No.46904/65. Heading G3T. In a watch pallet assembly the dart is welded to a block secured to the pallet. The dart is preferably composed of a copper-zinc-cadmium alloy.
Patent GB-1214837-A (GB)
Title: Improvements in or relating to trays
Inventor: NEASDON DUSHAN
IPC: A01G1/04
Filed: 1967-08-24
Abstract: 1,214,837. Horticultural trays. D. NEASDON. 20 Nov., 1968 [24 Aug., 1967; 19 Oct,. 1967], Nos. 38982/67 and 47559/67. Heading A1E. [Also in Division B8] A rigid organic plastics tray, e.g. for growing mushrooms, has a boss 5 at each corner provided at one end with a cavity 9, and at the other with a spigot 8 which engages in a corresponding cavity of an adjacent tray for stacking. The spigot 8 may be integral with either end of the boss 5, or both ends of the boss 5 may have cavities, separate detachable spigots being provided for connecting adjacent trays, which may be of polypropylene.
Patent GB-1358265-A (GB)
Title: Garbage compactor
IPC: B30B9/30
Filed: 1970-10-07
Abstract: 1358265 Refuse compactors M C W HOLD: INGS Ltd 1 Oct 1971 [7 Oct 1970] 47603/70 Heading B8C A garbage compactor 10 comprises a rigid sleeve 35 open at both ends and shaped slidable to fit inside and against the bottom of a garbage container, a base assembly 30 for supporting the container bottom, a pressure plate 26 slidably insertable into the sleeve and means 28, 29 to move the pressure plate axially of the sleeve so as to compact garbage therein, the sleeve being removable so as to leave the compacted garbage in the container. As shown, the sleeve 35, which is of stainless steel, is tapered towards the top by which it is suspended by a flange 37 supported by vertical members 39 extending from the base assembly 30. The lower end of the sleeve 35 extends into the mouth of a flange 36. The pressure plate 26 forms part of a known electrically operated automatically retractable screw ram 25 housed in the upper section 21 of a cabinet 10.1, the lower section 22 of which houses the base assembly 30 which is supported for movement into and out of the cabinet on rollers 32, 32.1 and 34. In another arrangement, Figs. 6 and 7 (not shown), the sleeve is rectangular for fitting into a rectangular container, which may be of cardboard and is supported on a front plate (58) extending from a base assembly (56).
Patent GB-1385118-A (GB)
Title: Elevating roof
IPC: B60P3/34
Filed: 1972-10-17
Abstract: 1385118 Convertible vehicles C I AUTOHOMES Ltd 7 Aug 1973 [17 Oct 1972] 47736/72 Heading B7B In an elevating vehicle roof assembly, a roof panel 3 adapted to cover an opening in a fixed roof is supported in the raised position by rigid wall elements hinged along their bottom edges to the fixed roof and divided by a horizontal hinge line for collapsing. In a preferred embodiment and walls 7, 8 are hinged also along their top edge to the roof panel, but side walls 9, 10 are not connected to the roof panel 3 and are raised into position only when the end walls 7, 8 have been unfolded. Spring assisters 45, 46 assist in the raising operation. A suitable alternative to the assistors would be an hydraulically actuated piston and cylinder arrangement.
Patent GB-1100417-A (GB)
Title: Improvements in or relating to soap dispensers
IPC: A47K5/10
Filed: 1966-10-25
Abstract: 1,100,417. Dispersing measured quantities of granular material. STEINER CO. LAUSANNE S.A. 25 Oct., 1966 [25 March, 1966], No. 47773/66. Heading B8N. A soap dispenser comprises a housing 1 for a supply of powdered soap and a slide 14 adapted to be moved from a first position in which a measuring chamber 14a is in communication with the supply and a second position in which the chamber is aligned with an outlet opening 4<SP>1</SP>, spring means 16a for returning the slide from the second position to the first position and timing means 15, 19, 19b for preventing the return movement before a given length of time. The slide is moved by a pusher 21 connected to a handle 6, the pusher being returned instantly by springs 20a after a dispensing operation. The timing device comprises a suction cup 15 secured via a bracket to the slide and is arranged, in the dispensing position, to co-operate with a second suction cup 19 fixed to the housing 1. Air is admitted into a chamber between the joined cups at a rate controlled by a valve 19b. The powdered soap is contained in a cartridge which is placed within the housing.
Patent GB-1156111-A (GB)
Title: Improved Method and Apparatus for Handling Sheets.
IPC: B65H29/24
Filed: 1966-10-25
Abstract: 1,156,111. Feeding and delivering sheets. CANADIAN INTERNATIONAL PAPER CO. 25 Oct., 1966 [26 Oct., 1965], No. 47776/66. Heading B8R. Two webs 24, Figs. 6 and 8, are fed to cylindrical cutters 44 which sever them into separate sheets 26 which are carried by suction on the lower runs of carrier bands 28 beneath valve mechanism 234 which alternately holds the sheets by suction and blows them downwards on to a transversely moving carrier web 22 on which they are held by suction and enclosed by a second web 70. The sheets are of different strength in two directions, and the line of strength is transverse to the web 22. The speed of the bands 28 is greater than that of the web feed, so that a gap is formed between the sheets 26.
Patent GB-1150919-A (GB)
Title: Autofluoroscope
Inventor: SPERGEL PHILIP
IPC: G01T1/164
Filed: 1966-10-25
Abstract: 1,150,919. Diagnostic photo-electric apparatus. BAIRD-ATOMIC Inc. Oct.25, 1966, No. 47923/66. Heading G1A. [Also in Division H4] A photo-electric detection system 10 employing an array of radiation sensors, is used to view the radiation emitted from a patient who has been injected with radio-active isotope. The digital output of this system is stored in a memory core 14, the contents of which can be displayed on a cathode ray tube 24 as a representation of the concentration distribution of the isotope within the patient. The detection system, viewing a patient lying on a radiation-transparent table 12, includes an array of 21 columns and 14 rows of scintillation crystal elements 44, e.g. discs of thalluimactivated sodium iodiode. Each row and each column of elements is coupled by light guides to a respective photo-multiplier, so that each particular element is associated with a unique pair of photo-multipliers, Figs. 2, 3 (not shown). At any one instant, the output on the plurality of coaxial cables from the photo-multipliers represents the co-ordinate locations of elements in which scintillations have occurred at that instant. The outputs on these lines could be in coded binary combinations. The memory and readout system has various modes of operation. In the "count" mode, whenever a pulse representative of a scintillation occurs in a particular element 44 and is within the window of a pulse height discriminator 18, a memory read-write cycle is triggered. The memory address is set by register 16 to that corresponding to the element 44 in which the scintiallation occurred. The contents of this location are read out, increased by one and stored back in the memory. The memory comprises 294 locations corresponding to the 294 elements 44 each location having a ten bit storage capacity. Every time a scintillation pulse occurs, the accumulated data of the particular memory location is also displayed on the cathode ray tube 24, digital/analog converters 22 and 28 controlling the location and intensity (depending on the accumulated count) of the cathode ray tube spot. In the "display" mode, no further counts may be accumulated by the memory, which is sequentially addressed periodically. A special readout subroutine may be employed involving crosscorrelation to produce averaged signals for application to the CRT. The CRT may be photographed. In the "punch" mode, the memory is read-out destructively and its contents stored on paper tape off-line. This tape may be read by a tape reader, driving a typewriter which prints a digital data "map" of the radiation emitted by the patient. The tape can be read back later into the memory for display on the CRT. The "dynamic" mode of operation comprises alternately accumulating information then destructively reading out and displaying. This allows a continuously changing CRT display which can be filmed. The memory-readout system is detailed in Figs. 4, 4a (not shown).
Patent GB-1449979-A (GB)
Title: Stop device for endodontic instruments
IPC: A61C5/44
Filed: 1974-11-08
Abstract: 1449979 Gauging depth of hole F RIITANO and S VINCENZO 8 Nov 1974 [8 Nov 1973] 48388/74 Heading B3C [Also in Division A5] A stop for limiting the penetration of a dental tool 4 into the radicular canal comprises two half-discs 1 together forming a disc having a groove (5) along its circumferential edge and a central bore to receive the tool, and a resilient split-ring 2 for fitment into the groove to hold the half-discs together. The wall of the bore is concave axially of the bore. The half-discs 1 and ring 2 may be made of metal.
Patent GB-1072009-A (GB)
Title: A print evaluation system
IPC: G06G7/184
Filed: 1965-11-16
Abstract: 1,072,009. Photo-electric print evaluation systems; measuring pulse characteristics. INTERNATIONAL BUSINESS MACHINES CORPORATION. Nov. 16, 1965 [Dec. 23, 1964], No. 48530/65. Headings G1A and G1U. The exposure to be given when copying a document is determined by scanning the type photoelectrically to provide a train of pulses, determining (a) the average pulse height, (b) the average pulse duration and (c) the average pulse rise time, applying a weighting factor to parameters (a), (b) and (c) and summing the results to give an exposure signal. Parameters (a) and (b) may also be determined for the pulse train when inverted, and added into the exposure signal with appropriate weighting factors. Measuring average pulse duration Fig. 1 (not shown). The pulses are fed to a Schmitt trigger 4 to produce uniform amplitude pulses of corresponding duration which are integrated at 10. A counter 13 inhibits the Schmitt trigger when a preset number of pulses have been integrated so that the integrator output is proportional to the average pulse duration. Measuring average pulse height Fig. 3 (not shown). The pulses are fed to a store 56 which holds the peak value of the pulse and to a one-shot 36 which produces a pulse of standard duration. A proportion of this pulse determined by the peak detector 56 is integrated at 46. The counter 13 inhibits the one-shot when a preset number of pulses have been integrated so that the integrated signal depends on the average pulse height. Measuring mean pulse rise time Fig. 6 (not shown). The pulses are fed to Schmitt triggers 89, 91 set to trigger at different levels and a logic circuit 97 gives an output pulse during the time that only one trigger is on. Since these output pulses are of uniform amplitude and their length is inversely related to the rise time of the input pulse, a preset number of them, determined by the counter 13 may be integrated at 103 to provide a signal indicative of the mean pulse rise time.
Patent GB-1195497-A (GB)
Title: Apparatus and Methods for Removing Water or other such Liquids from Elastomer or Polymer Materials
IPC: B29B13/06
Filed: 1968-10-15
Abstract: 1,195,497. Rotary press for rubber crumbs. NRM CORP. 15 Oct, 1968 [16 Oct., 1967], No. 48891/68. Heading BID. Rubber crumbs are shredded and pressed to release waer therefrom by passing them radially inwards through the gap between a rotor disc 10 and adjacent stator plate(s) 8, 9, the water being flung centrifugally from the periphery and draining from outlet 52. In Fig. 8, rotor '10 is sandwiched between plates 8, 9, and a hopper (38) feeds crumbs to the outer periphery of both gaps, whence they pass through annular openings 47' to be expelled axially by a pair of oppositely threaded screws 48 integral with the rotor. It would be possible 'to feed crumbs radially inwards through one gap and axially to the other gap then radially outwards through that other gap to a ,peripheral discharge point. Plates 8, 9 and. rotor 10 have spiral vanes 45, 46 which may be similarly or oppositely spiralled and effect the crumb-shredding and movement. Passages 55 carry cooling fluid. The axial width of openings 47' is variable by screwing sleeves 56 into collars 57 by turning a handle (68) geared to lever 63 (Fig. 4, not shown). Plates 8, 9 are mounted on end walls 6, 7, which are adjustable, after replacing spacing sleeves 17 by others of different length, by tightening nuts 18. The rotor and screws are turned by motor (35) through a clutch, gears and belt drive (33). A fixed plough (41) in hopper (38) engages the edge of rotor 10 to prevent its carrying crumbs. In Figs. 11, 12 (not shown) a single stator plate is sandwiched between two rotor plates whose faces engage crumbs fed into a spiral slot (74) in the stator plate and convey them inwards to axial discharge (76). Figs. 17, 18 (not shown) illustrate a similar arrangement, wherein the rotor plates have spiral vanes which direct crumbs inwards to apertures (106) opening into a hollow driving shaft, while the central part of the stator is a hole bridged by two spiral projections (99) opposed to the rotor vanes. In Figs. 14 to 16 (not shown), a spirally vaned rotor plate coacts with a single stator plate to force crumbs along radial grooves (88) therein. Figs. 19 to 21 (not shown) illustrate a similar arrangement, having a rotary feed screw at the bottom of the feed hopper, to deliver crumbs between the plates with increased pressure.
Patent GB-1349400-A (GB)
Title: Method of producing porous ceramic bodies
IPC: C04B30/02
Filed: 1971-10-22
Abstract: 1349400 Oxidation catalysts W R GRACE & CO 22 Oct 1971 [22 Oct 1970 (3)] 49203/71 Heading B1E [Also in Divisions Cl and F1] A porous, ceramic catalyst support is produced by extracting plasticiser from a homogenious shaped composition comprising 5-67 volume % of a polyolefin having a molecular weight of at least 150,000 and a standard load melt index of substantially zero, 15-18 volume % of a ceramic filler, and 15-18 volume % of a plasticiser heating the polyolefin to remove it as gaseous decomposition products and firing. Example 42 describes impregnation of the porous support with catalyst by immersion in copper-palladium and copper-palladium-manganese solutions, and vacuum impregnation with chromia producing a porous support impregnated with 4.64% by weight Cr 2 O 3 , 6.96 wt % MnO 2 , 4.64 weight % CuO and 0.02 weight % Pd. Examples of plasticisers, ceramic fillers, and polyolefins are given in the Specification.
Patent GB-1532628-A (GB)
Title: Metal bonding method
IPC: B23K1/00
Filed: 1974-11-15
Abstract: 1532628 Eutectic diffusion bonding ASSOCIATED ENG Ltd 31 Oct 1975 [15 Nov 1974] 49480/74 Heading B3R A bonded structure comprising one piece of Al or Al alloy and one piece of high Si (i.e. >10%) Al alloy is produced by interposing a metal interlayer (e.g. Cu) and heating the workpiece to not above 530 C. (preferably not below 515 C.) whilst pressing the workpieces together, the bond of the eutectic diffusion type. Pistons (Fig. 3, not shown), internally threaded members (Fig. 1, not shown), heat exchangers, radiation fin and tube assemblies and cylinder head castings may be so produced. Pressure may be applied in a furnace or in a differential expansion jig (Fig. 4, not shown) which is of stainless steel and as such expands less than Al or Al alloy. A pressurized argon atmosphere may also be present during bonding. One high Si alloy disclosed comprises:-
Patent GB-1197637-A (GB)
Title: Improvements in or relating to Pure Fluid LOgic Devices.
Inventor: CHADWICK VICTOR JAMES
IPC: F15C1/14
Filed: 1967-10-31
Abstract: 1,197,637. Fluidic monostable device. PLESSEY BTR Ltd. 29 Oct., 1968 [31 Oct., 1967], No. 49496/67. Heading G4P. A monostable pure fluid digital device operating as an inverter comprises a rectangular cross-section chamber 12 which may be of laminer construction to which a supply nozzle communicates collinear with an output port 16; a vent 20 being opposed to a control nozzle 18 on an axis normal to that of the supply and output while a further vent 22 of the chamber is interposed between port 16 and control nozzle 18. In operation (Figs. 2 to 4, not shown), the supply stream flows out through port 16 in absence of control signal with leakage through vent 22 and circular flow in mouth of vent 20, while on application of control signal a small proportion of the stream flows initially into vent 20, entrains boundary stagnant air, and inhibits flow of air along the lower wall of vent 20. At a critical condition, a low-pressure region develops in the vent mouth and directs the main stream thereinto with snap action, with formation of a separation bubble at the lower wall, while a small flow still emerges from port 16, giving a hysteresis effect (Fig. 5, not shown). In modifications (Figs. 6, 7, not shown) the angle between vent 20 and supply 14 may be champered, or given convex or concave elliptical, circular, or faceted profile; or the control nozzle may be bifurcated for NOR operation.