baber/WOPTO huggingface dataset:
Patent GB-1446806-A (GB)
Title: Method and apparatus for tuning the natural frequency of an  oscillating body formed of a piezoelectric crystal
IPC: B23K26/351
Filed: 1974-04-11
Abstract: 1446806 Working crystals LASAG SA and OSCILLOQUARTZ SA 11 April 1974 [19 April 1973] 16151/74 Heading B5E [Also in Division H1] A piezoelectric crystal 15, 41, e.g. quartz, is tuned by focusing pulses of a focused beam of radiation, such as light from a laser 27 or electrons from a source 49, on a surface of the crystal to remove small amounts of material, the beam being deflected so that any pulse does not impinge on the crystal at the same point as the immediately preceding pulse. The points of impact of the beam may be arranged in a geometric pattern, e.g. concentric circles or a spiral, Figs. 1 and 2 (not shown). The crystals to be tuned are mounted on a turntable 17, 43 and the next crystal to be tuned 15<SP>1</SP>, 41<SP>1</SP> has its natural frequency measured by devices 22, 45 so that when it comes to the operative position a computer 24, 46 can cause a modulator 26, 47 to apply an appropriate number of beam pulses to achieve the desired tuned frequency. In Fig. 4 the light beam is scanned by a rotating and tilting mirror 29 and in Fig. 5 a deflecting field is provided at 52.
Patent GB-624255-A (GB)
Title: Improvements in or relating to method for the preparation of storage battery plates and apparatus for treating the same
IPC: H01M4/21
Filed: 1947-06-19
Abstract: 624,255. Batteries. NATIONAL LEAD CO. June 19, 1947, Nos. 16197 and 16198. Convention dates, Oct. 19, 1940. [Class 53] [Also in Group XIII] Accumulator negative plates pasted with a mixture of litharge and finely divided lead are dried in air, the oxidation of the lead providing the necessary heat. The surface moisture on the plates is first removed by the application of heat or by absorption in a porous material and the plates are then stacked one upon another. If surface moisture is not removed, the plates must be separated from one another during the drying operation to prevent sticking. To provide sufficient heat by the oxidation of the lead, this must be present to the extent of five to fifty-five per cent of the mixture. Positive plates also contain red lead. To dry the surfaces of the plates preparatory to stacking, they may be heated electrically or the plates may be pickled in sulphuric acid or ammonium persulphate solution or treated with carbon dioxide. Alternatively, the final scrapers of the pasting machine may be heated or the pasted plates may be conveyed from the machine on heated belts or the plates passed between heated rollers. Other methods comprise pressing, squeezing or rolling or the application of absorbent material to the surfaces of the plates. The Figure shows an apparatus for drying the surfaces of plates 12a which are suspended by their lugs on a conveyer 33 driven through toothed wheels 34. The plates are passed in front of jets 36, 37, 38 through which hot air is pumped. The conveyer is cooled in a water tank 44.
Patent GB-617427-A (GB)
Title: Improvements in and relating to the roasting of sulphide ores
IPC: C22B1/10
Filed: 1946-05-28
Abstract: 617,427. Pneumatic conveyers. NORDSTROM, O. May 28, 1946, No. 16212. [Class 78(i)] [Also in Group XII] In a sulphide ore roasting furnace, means for feeding powdered ore and air to a burner at the top of the furnace chamber comprises two conduits 4 and 5 with a common connection to a source of compressed air, said connection having a distributing valve, Figs. 2 and 3 (not shown), the conduit 4 being supplied with ore from a feeding device 14 and leading to a nozzle in the burner 2 to which additional air is supplied by the conduit 5 through a pressureequalizing box 22. Air preheated in the jacket 11 is supplied by a fan 8 and combustion products after circulating through a heatexchanger 27 may be recirculated tangentially around the burner nozzle 24. A box 16 with a window 21 is provided at the foot of the conduit 4 so that if the fall of powdered ore is observed the speed of the air in said conduits may be adjusted to the minimum required to lift the ore.
Patent GB-448302-A (GB)
Title: Improvements in and relating to regulating arrangements for electric alternating current stage and similar lighting installations
IPC: H05B39/08
Filed: 1935-06-04
Abstract: 448,302. Control systems for incandescent lamps. SIEMENS - SCHUCKERTWERKE AKT.-GES., Siemensstadt, Berlin. June 4, 1935, No. 16213. Convention date, April 26. [Class 38 (iv)] Thermionic and like control.-Alternating current is supplied to a lighting loac 2 through a control device comprising a pair of re versely connected grid controlled arc discharge valves 4, 5, in series with a choke 7 dimensioned to suppress the higher frequencies arising from control of the instant of ignition of the discharge in the valves 4, 5. The discharge valves may be in series with the load through a transformer or auto-trannformer which has sufficient leakage reactance to perform the function of the choke 7. Where a number of loads are controlled separately through separate sets of discharge valves the choke coils 7 of the several circuits may be wound on a common core. The choke coil 7 is designed so that the drop across it of the fundamental frequency is 10 per cent of the supply voltage. The discharge tubes and their grid control circuits and chokes or transformers may be arranged in compact units which may be aggregated where several units are used. A number of discharge gaps may be arranged in the same vessel, e.g. two vessels each containing three sets of three-electrode systems reversely connected may be used to control three separate load circuits. The grid control apparatus is arranged to supply sharply rising potentials to the grids. The invention may be applied to stage, hall, or street lighting installations.
Patent GB-385212-A (GB)
Title: An improved method of preserving green fodder
IPC: A23K30/15
Filed: 1932-06-08
Abstract: Green cattle fodder is preserved by being acidified, the acidification being accomplished by the use of compounds containing sulphur and chlorine such as sulphur trioxy-tetrachloride, thionyl chloride, sulphuryl chloride, sulphur oxychloride, chlorsulphonic acid or pyrosulphuryl chloride either alone or in mixtures. Phosphorus pentachloride may be added to the above substances.  The compounds are added to water and the solution sprayed on the fodder. Specification 370,685 is referred to.
Patent GB-124152-A (GB)
Title: Improvements in Typewriting Machines.
Inventor: IMRAY OLIVER
IPC: B41J7/02
Filed: 1918-10-07
Abstract: 124,152. Imray, O., (Noiseless Typewriter Co.). Oct. 7, 1918. Type-lever actions.-In actions in which typelevers, actuated by key-levers, are provided at the ends with returning-springs, the type-levers are .each connected to a rigid part of the machine by a device, such as a toggle, for arresting the typelever without impact and independently of the platen. In the action shown, the type-lever 10 is connected by a toggle 25, 26 to an adjustable block 27 on the framework 24 The block may be provided with a spring 30 for engaging the toggle and with a rest 29 for the type-lever. The type-lever is actuated with an accelerated stroke by a bell-crank 17 which is connected by a link 20 to the key-lever 4 and is formed with a cam face 16 for engaging a face 15 on the typelever. A returning-spring 21 is connected to the heel of the type-lever
Patent GB-1409494-A (GB)
Title: Absorption refrigeration system
IPC: F25B15/00
Filed: 1973-04-05
Abstract: 1409494 Desalination of sea water G MAMIYA 5 April 1973 [19 Oct 1972] 16341/73 Heading C1C [Also in Division F4] An absorption refrigeration system for producing fresh water from sea water, or for purifying contaminated water, includes a plurality of units consisting of a main absorption refrigerator and at least one supplemental absorption refrigerator providing different evaporator temperatures, wherein the heat of absorption of refrigerant in the main refrigerator is removed by applying refrigeration effect produced in the supplemental refrigerator. In the preferred embodiment, five refrigerators are coupled as shown in Fig. 2. Sea water at 5‹ C. is introduced into a freezer 6 through an inlet 10 and is cooled to - 5‹ C. by the third refrigerator 3 producing ice and concentrated sea water which is separated in a centrifugal separator 6a, the ice passing to a melting vessel 9 and the concentrated sea water passing to the next freezer 7 where it is cooled to - 15‹ C. by the fourth refrigerator 4. The ice from the freezer. 7 pasess to the vessel 9 through a separator 7a and the more concentrated. sea water passes to the next freezer 8 where it is cooled to - 20‹ C., the ice passing through a separator 8a to the vessel 9. Part of the refrigeration effect produced in refrigerator 4 is applied to the absorber of refrigerator 5. Water from the vessel 9 is used to cool the absorber of refrigerator 3. Sea water at 5‹ C. is used to cool the condensers of refrigerators 1-5 and the absorbers of the refrigerators 1, 2. Concentrated sea water cools the condensed NH 3  in the five refrigerators. Each freezer 6-8 comprises a drum 35, Fig. 4, mounted for rotation in a sea water container. Refrigerant fed to the drum causes an ice layer to form which is removed by a knife and transferred to the associated separator.
Patent GB-496500-A (GB)
Title: Improvements in means for detachably attaching metal plates or other structural members together or to other members
IPC: F16B5/02
Filed: 1937-06-14
Abstract: 496,500. Bolts. MANNING, F. A. June 14, 1937, No. 16433. [Class 89 (i)] [Also in Group XIV] For detachably attaching metal plates, thin wooden boards, asbestos sheets, and like structural members in edge to side relationship, the edge member a is formad with a hole a<1> spaced apart from its edge to leave a fillet a<3>, whilst the side member b is formed with a hole b<1>, the two members being attached together by a two-part bolt c formed with a spigot end having segmental portions c<1>, c<2> to fit one on each side of the fillet and oppositely extending transverse projections c<8>, c<9> to extend through the hole a<1>, and with a divided screwed end c<3> to extend through the hole b<1>, a slot or recess being formed in one of the members to locate means, such as a nut or threaded washer d, for securing the two parts of the bolt together on the edge member, and one or more nuts e being screwed on to the bolt to hold the side member on the bolt. The recess may be formed by a countersunk hole in the side member, or, as shown, an edge slot a<2> may be cut in the edge member adjacent the hole a<1>. The projections c<8>, c<9> may be slotted at c<10> to engage the edge of the hole a<1> and they may be extended in one or both directions and threaded or otherwise formed to receive other nuts or fastening devices for further structural parts such as diagonal stays or bracing members.
Patent GB-1191982-A (GB)
Title: Apparatus for Measurement of Concentration in the Atmosphere of the Short-Lived Solid Decay Products of Radon
Inventor: LASSEUR CLAUDE
IPC: G01T1/178
Filed: 1968-04-05
Abstract: 1,191,982. Monitoring atmospheric radioactivity. COMMISSARIAT A L'ENERGIE ATOMIQUE. April 5, 1968 [April 13, 1967], No. 16457/68. Heading G1A. The concentrations of the short lived decay products of radon in the atmosphere are measured by depositing them on an intermittently moving filter strip, subsequently detecting separately the α and # particles emitted from the deposit, applying the α pulses to a two channel pulse height analyser to separate the components due to RaA and RaC<SP>1</SP> and subtracting the RaC<SP>1</SP> component from the # pulses to provide a measure of the RaB component. Sampling and detection apparatus. A filter strip 1, Fig. 3 extends between spools 2, 3, and passes through a sampling tube 6. At the start of a sampling interval, the inner tube 13 is lowered by an armature 11 to clamp the strip at the bottom of the tube 6 and the pump 8 is actuated to draw air through the filter strip. A punch 12 makes a perforation a distance D along the strip from the centre of the tube 6. At the end of the sampling period a cam switch 14 closes energise the solenoid 10 to raise the tube 13 and punch 12 and change over from the pump 8 to the pump 9. When the punch 12 closes the switch 20 an electromagnetic clutch 5 operates to move the strip until the perforation is detected by a photo-resistor 17. The deposited sample is then between a semi-conductor junction α-particle detector and a #-sensitive geiger tube 22 having an α opaque window (4mg/cm<SP>2</SP> mica). Geiger tube 22 is surrounded by a compensating geiger tube 23, the outputs of the two tubes being connected to an anticoincidence circuit to eliminate background. Electrical circuit. The output of the α detector 21, Fig. 4, is fed through amplifiers 24, 25 to a pulse height analyzer 26, 27 and pulses due to RaA and RaC<SP>1</SP> are each shaped (28, 29), integrated (30, 31) and applied to a recorder 34 which records them sequentially. The output of the # detector 22 is shaped at 40 and integrated at 41 and applied at T to recorder 34. The # output depends on both RaC and RaB. The RaC<SP>1</SP> signal from integrator 31 is multiplied by 1À0004 at 43 to become representative or RaC and then subtracted from the # signal by connecting the signals to opposite ends of potentiometer 47 and the difference applied to recorder 34 at B as a signal representative of RaB. An extra channel may be provided whereby the total α count may be recorded.
Patent GB-593128-A (GB)
Title: Improvements in and relating to the manufacture of board
IPC: D21H23/50
Filed: 1943-10-08
Abstract: 593,128. Waterproof laminated paper or board. BRITISH BEWOID CO., Ltd., and TROST, M. F. H. Oct. 8, 1943, No. 16534. [Class 96] Laminated paper or board is waterproofed during manufacture by applying a mechanicallydispersed bituminous emulsion incorporating minerals, e.g. as disclosed in Specification 549,244, [Group III], or which may comprise petroleum resins or residues, or shale resins or pitches dispersed with casein, glue, Irish moss, or gelatine, e.g. with kaolin &c., after web formation, but before winding on a cylinder. The waterproofing medium may be applied by pouring, spraying or by coating rolls, e.g. using jets, an adjustably slotted pipe, or an apron directing the flow towards the web where it is being wound up ; and may be applied continuously or intermittently. Specifications. 442,002 and 536,874, [Group V], also are referred to.
Patent GB-237422-A (GB)
Title: Improvements in machines for treating fabrics with liquids
IPC: D06B3/26
Filed: 1924-07-10
Abstract: 237,422. Bailey, J., and Gee, E. July 10, 1924. Endless materials, treating with liquids; winch type.-A machine in which woollen, worsted or cotton fabric can be both dyed and washed off, or in which a union fabric may have its woollen portion first dyed, then washed off, and its cotton portion dyed and the fabric again washed off, comprises a vat a above which is mounted a pair of rollers c, d, the upper being pressed down yieldingly but being capable of being raised clear of the lower; a trough j below the lower roller and provided with perforations j<1> in the base, covered by a sliding-member k which in one position covers these perforations and at the same time opens an outlet j<2>, while in the other position the liquor caught by the trough is free to discharge through the perforations into the vat; a draught-board m either fixed or hinged and connected to the driving-mechanism in such a manner as to act as a stop-motion; a guide roller l above the draught-board and a fluted guide roller b on the other side of the pressing rollers c, d and by means of which the loops of fabric are caused to fall in folds on the sloping floor of the vat; perforated pipes s for projecting jets of water on to the fabric passing to and from the squeezing rollers and a perforated partition a<1> behind which is arranged a perforated steam pipe b. In use, the fabric is passed in rope form in several loops over the rollers c and guide rollers l, p, the loops being kept separate by the draughtboard m; the ends of the fabric are then sewn together. The vat is filled with dye liquor, the machine set in motion, and the sliding-member k arranged so as to permit liquor caught by the trough to return to the vat. Dyeing completed, the exhausted liquor is discharged through an outlet a<3>, the top roller d being lowered to squeeze the material, and the material washed by jets of water from the pipes s. In the case of union fabrics, the vat is then charged with the cotton dye liquor and the machine operated for the necessary time; after dyeing, the member k is shifted to close the perforations j<1> of the trough j and to open the outlet j<2> so that liquor squeezed out on lowering the upper roller is collected by the trough and delivered to a storage tank. The cutlet j<2> is subsequently closed and the material washed with water as before. Finally, the ends of the material are severed, and the fabric is run off over the roller v.
Patent GB-1006320-A (GB)
Title: 2-substituted-3-pyrazolidones
IPC: G03C8/06
Filed: 1962-05-01
Abstract: The invention comprises compounds of the formula <FORM:1006320/C2/1> where Z is hyroxymethyl or a substituted aminomethyl group, R is aryl or substituted aryl, and R2, R3 and R4 are hyrogen or aliphatic or aromatic groups, which may be substituted; and their preparation by reacting a compound in which Z is hydrogen with formaldehyde or with formaldehyde and a secondary amine; solvents and heat may be used. In specified compounds, R is phenyl and (1) Z is morpholino-methyl; (2) Z is 1,2,3,4-tetrahydroquinolymethyl; (3) Z is piperidinomethyl; (4) Z is CH2OH; (5) Z is CH2OH and R2 is CH3; (6) Z is CH2OH and R2 is CH3 and R3 is CH2Cl; the other R radicals being hydrogen. Other values for Z, R, R2, R3 and R4 are specified. The compounds of the invention are photographic developing agents (see Division G2). Specifications 712,350, 725,573, 729,388, 729,862, 731,407, 731,419, 732,945, 757,271, 898,328 and 964,514 are referred to.
Patent GB-457825-A (GB)
Title: Manufacture of azo-dyestuffs insoluble in water
IPC: C09B29/32
Filed: 1935-06-07
Abstract: Azo dyes insoluble in water are made in substance, on a substratum or on the fibre by coupling a diazotized aromatic monoamine with an acylacetic acid arylide of the general formula <FORM:0457825/IV/1> wherein R=alkyl or aryl, R1=alkyl, aryl, hydroaryl, aryloxyalkyl or a heterocyclic radical, one X=alkoxy and the other X= alkoxy, methyl or halogen.  They yield yellow to orange shades of improved fastness to light and soaping.  In the examples: (1) cotton is grounded in a liquor containing benzoylacetic acid - 1 - amino - 4 - benzoylamino - 2 - chloro - 5 - methoxybenzene, ethyl alcohol, acetone, caustic soda, turkey red oil and common salt and developed with the acid 1 : 5-naphthalenedisulphonate of diazotized 1-amino-2-chloro-5-trifluoromethylbenzene in acetic acid; (2) dried cotton material is impregnated with a solution containing benzoylacetic acid - 1 - amino - 4-benzoylamino - 2 - methoxy - 5 - methylbenzene, sulphonated castor oil and caustic soda, dried and printed with a paste containing diazotized o-nitroaniline; diazotized 1-amino-2-methyl-3-chlorobenzene is coupled with acetoacetic acid-1-amino-4-benzoylamino-2 : 5-diethoxybenzene; (4) desized and bleached cotton piece goods are printed with a paste containing sodium 2-methoxy-5-chlorobenzene-1-nitrosamine and acetoacetic acid-1-amino-4-benzoylamino - 2 : 5 - dimethoxybenzene, steamed or exposed overnight, passed through acetic acid and soaped; (5) cotton material is printed with a paste containing the disodium salt of the diazoamino compound from diazotized 1-amino-3-chlorobenzene and 1-aminobenzene-2-carboxybenzene-4-sulphonic acid, benzoylacetic acid-1-amino-4-benzoylamino-2 : 5-dimethoxybenzene, steamed in the presence of vapours of acetic and formic acids, rinsed and soaped.  A table of components and the shades produced is also given.  The dyestuffs may also be produced on linen, viscose artificial silk, wool and natural silk.  Specifications 334,529, [Class 2 (iii)], and 355,709 are referred to.
Patent GB-642400-A (GB)
Title: Improvements in or relating to receiving apparatus for radio navigation systems
IPC: G01S1/30
Filed: 1946-08-21
Abstract: 642,400. Radio navigation. O'BRIEN, W. J. Aug. 21, 1946, No. 16636/49. Divided out of 642,368. [A Specification was laid open to inspection under Sect. 91 of the Acts, Feb. 28, 1947.] Drawings to Specification. [Class 40 (vii)] The subject-matter of this Specification is identical with that described in Specification 642,399. The claims are for the receiver of the system described therein.
Patent GB-310699-A (GB)
Title: Improvements in weighing apparatus
IPC: G01G1/36
Filed: 1928-06-11
Abstract: 310,699. Maatsehappij tot Vervaardiging van Snijmachines Volgens van Berkel's Patent en van Andere Werktuigen, and Berkel, C. F. M. van. June 11, 1928. Pendulum - weight apparatus; sliding- weight apparatus-In a weighing - apparatus of the type having a steelyard or a notched bar with a sliding poise weight the displacement of which wholly or partly balances and indicates the load means are provided for preventing movement of the steelyard sufficient to effect the weighing operation during movement of the sliding poise between graduations or notches, the means being so arranged that the steelyard is immediately and automatically freed each time the sliding poise is at a graduation or notch. The weighbeam 1 mounted on a fulcrum 2 carries a scale pan at one end and is connected at the other end to a pendulous resistant 20 by a ribbon 15<1>. The steelyard or notched bar 4 is integral with, or secured, to, the weighbeam and carries, upon wheels 9, 10, an endless band 8 attached to the sliding poise weight 5. The poise weight is adjusted by means of gear wheels 11, 12 and an external finger knob on the shaft of the gear wheel 12. A pin 15 projecting from the base immediately beneath the wheel 9 prevents oscillatory movement of the steelyard and weighbeam (thus preventing a weighing operation being performed) unless the poise weight 5 is positioned in the notches 7 in which position. a radial recess 14 in the wheel 9 occupies a position above the pin 15 and permits the necessary freedom to the weighing system. When the poise weight 5 arrives at its correct notch for producing equilibrium the weighbeam tilts and removes the gear wheel 11 from its driving connection 12. The portion of the load balanced by the poise weight is indicated on a dial 22 connected to the poise weight by a ribbon 23, and the fractional portion is indicated by the pendulum pointer 21. Specification 224,550 is referred to.
Patent GB-417145-A (GB)
Title: Improvements in or relating to kettles or the like
IPC: A47J27/024
Filed: 1933-06-13
Abstract: 417,145. Kettles &c. LEBAIGUE, H. E., 51, Tavistock Terrace, Holloway, London. June 13, 1933, No. 16859. [Class 66.] The upper portion of a separate water chamber disposed below the main body of a kettle &c. is provided with radial, curved, or undulated flutings forming with the underside of the main chamber a series of branch flues 4 leading from a central flue 5 to the side wall of the vessel. One or more water-circulation ports 7 are disposed in the parts between the flues 4. In the form shown the wall 3 is common to the two chambers ; they may, however, have independent adjacent walls between which the flutings are provided.