baber/WOPTO huggingface dataset:
Patent GB-979369-A (GB)
Title: Improvements in or relating to amplitude modulated transmitters
IPC: H03C1/16
Filed: 1962-06-08
Abstract: 979,369. Valve amplifying circuits. CONTINENTAL ELECTRONICS MANUFACTURING CO. June 8, 1962 [June 13, 1961], No. 22214/62. Heading H3W. The radio frequency output of a transmitter subject to unwanted changes of output, due e.g. to reduction of H.T. supply on the application of modulation, variations in line voltage, or valve ageing, is fed via a capacitor to divide rectifier 10 and the R.F. components removed from its output by means of low-pass filter 12, A portion of the filter output is selected by means of potentiometer 18 and all except very low frequency variations removed by capacitor 13. The residual voltage is amplified in a direct-coupled amplifier comprising a first stage 14 with its cathode stabilized at a negative potential by means of a gas discharge tube 16 which forms a voltage reference source. The anode of this valve is direct-coupled to a second stage, D.C. and A.C. negative being applied between the two anodes by means of a resistor/capacitor combination. The second stage 20 is direct coupled to a cathode follower stage 22 comprising the two elements of a double triode in parallel, the load of which comprises the screen grid of an R.F. amplifier 24 in the R.F. signal path, the gain of which is thus controlled so as to counteract low frequency variations. A switch 26 permits of the screen grid potential being controlled manually instead.
Patent GB-299939-A (GB)
Title: An improvement connected with scythes
IPC: A01D1/14
Filed: 1927-08-24
Abstract: 299,939. Formby, C. W. Aug. 24, 1927. Equipment for carrying purposes.-A yoke-like device for supporting and facilitating the use of a scythe comprises a transverse backboard a, having wings a<1>, which is adapted to be secured to the wearer by straps b that pass through apertures a<2> and notches a<3>. Pads c, c<1> are provided to enable the backboard to bear comfortably against the wearer. Adjustable cords d, d' are adustably secured to holes a<4> in the wings a<1>. Snaphooks e are fitted at the ends of the cords to engage in screw-eyes fixed in the hand-pieces g, g<1> of the scythe. The cords d, d<1> may be connected together by a chain, cord, or other member d<2>. Rigid side members l extend from the backboard a to a lower backboard k secured by a waist or hip belt m, m<1>. The members l may be detachable so that others of different length may be substituted or their length may be adjustable. In a modification, the side members l are dispensed with and an ordinary belt takes the place of the lower backboard, a retaining strap or cord extending from the upper backboard to this belt.
Patent GB-531773-A (GB)
Title: Improvement in electric accumulators
IPC: H01M50/627
Filed: 1939-08-01
Abstract: 531,773. Batteries. LUBECK, H., and ALLMANNA SVENSKA ELEKTRISKA AKTIEBOLAGET. Aug. 1, 1939, No. 22295. [Class 53] Accumulator cells a, which have metal containers, are suspended, by means of supports fixed to their upper parts, to opposite carrying- walls d. The supports may be combined with connections between the cells as at c, Figs. 1, and 2, which show single separated cells or may be connected to lugs n on the containers themselves Fig. 3. In a further modification, Fig. 5, the supports h are integral with the walls and are bolted to the cell-connectors k. The cells may be doubled either transversely as in Fig. or lengthwise, and may have humped parts u between the terminals to facilitate filling. In the case of double cells a single coverplate i may cover both filling orifices b. The carrying-walls d may be of wood or cement or may have metal reinforcing r, Fig. 5, and a covering of non conductor such as rubber.
Patent GB-715584-A (GB)
Title: Improvements relating to coal mining machinery
IPC: E21C35/16
Filed: 1952-09-04
Abstract: 715,584. Mining machines GEWERKSCHAFT EISENHUTTE WESTFALIA. Sept. 4, 1952 [Oct. 27, 1951], No. 22295/52. Class 68(1) A coal planer 17 is drawn along a mine face 10 by an endless chain 18 and is guided by a rail 16 positioned at the side of a trough conveyer 11, 12, 13, and by the shoes 21 of supporting arms 20 which extend from the planer over the conveyer and partially encircle the tubular guide,channel 19 of the return run 18<SP>1</SP> of said chain 18. The tubular  channel 19 is positioned directly above the conveyer trough.
Patent GB-669132-A (GB)
Title: Improvements in or relating to pressure bars of document filing appliances
IPC: B42F13/36
Filed: 1949-08-27
Abstract: 669,132. Filing papers. SETTEN, R. S. Aug. 28, 1950 [Aug. 27, 1949], No. 22306/49. Class 146 (i). Locking-followers. -A pressure bar 1 having holes 4 by which it is threaded on fixed filing posts 2 and approximately parallel wires 6, 7 held by lugs 9 so that when moved apart intermediate their ends, their ends 8 converge so as to grip the posts 2, the operating member for moving the wires comprises a lever 11 fulcrumed on one wire member 7 and arranged to coact directly with the other wire member 6 so that when the lever 11 is turned into one overcentre position, the wires 6, 7 are separated. The lever 11 is of channel section sheet metal pressing held on the wire 7 by passing through holes 12, in the flanges 13 thereof, the edges of the flanges having a cam form 14, to press apart the wires 6, 7. The ends 15, 16 of the top of the lever 11 are curved to facilitate rotation of the lever in both directions. The clamping mechanism is held within a recess 3 in the bar 1 and a central recess 5 is provided for the lever when in clamping position.
Patent GB-857747-A (GB)
Title: Improvements in or relating to body-encircling garments
IPC: A41F1/00
Filed: 1959-06-30
Abstract: 857,747. Brassieres; fastener tapes. CHARMFIT OF HOLLYWOOD Inc. June 30, 1959 [Jan. 30, 1958], No. 22380/59. Class 141 In a brassiere wherein the side portions 12 are connected to straps 15a, 15b respectively extending round the back of the wearer, the free end of each strap is releasably secured below the opposite cup 10 by means of fabric tapes 16, 14 provided with filamentary nylon hooks 18 and loops 17 adapted to engage when the tapes are pressed together.
Patent GB-215649-A (GB)
Title: Improvements in valves or cocks
IPC: F16K1/44
Filed: 1923-09-06
Abstract: 215,649. Kirkham, J. Sept. 6, 1923. Closure members.-In a double - seated screw down valve the valve spindle 8 is formed or fitted with a valve head 8<a> having a screwed projection 8<b> engaging a screwed socket, 10<b> on a second valve e head 10. The projection and socket t are disposed wholly on the inner sides of the valve heads, as shown, so that the interconnecting parts s lie wholly within or between the valve seatings 3 when the valve is closed. Lubricant is fed to the screwed parts through a duct 8<c> from an oil well 13 formed in the screw member 12<a> which holds the wheel 9 in position, a feed valve 9<d> being provided to feed the lubricant in desired quantities.
Patent GB-521688-A (GB)
Title: Improvements relating to collapsible tubular containers
IPC: B65D35/12
Filed: 1938-07-28
Abstract: 521,688. Collapsable tubes. SCHULZ, [nee LOHMANN], E. July 28, 1938, No. 22513. Convention date, July 28, 1937. [Class 66] Collapsable re - fill containers 8, Fig. 2, of paper &c. are mounted for use in a permanent headpiece comprising a . skirted shoulder portion 7 and a delivery nozzle 6 provided with a screw cap, the headpiece being formed with internal threads either on -the nozzle (as shown) or on the skirt portion, adapted to engage co-acting threads provided on the re-fill container, the end 11 of the container 8 being pierced before insertion. A telescopic sleeve 18, Fig. 3, may be attached to the headpiece. The Specification as open to inspection under Sect. 91 describes also collapsable containers formed by winding webs of paper coated or lined with indiarubber, aluminium or other metal foil &c. which containers may be of tapering: shape as shown in Fig. 4. (Cancelled), and of the cross-sectional forms shown in Figs. 1 to 3 (all Cancelled). This subject-matter does not appear in the Specification as accepted.
Patent GB-1173242-A (GB)
Title: Recovery of HI in Manufacture of Unsaturated Organic Compounds
Inventor: BLOOD ALDEN EDWARD
IPC: C01B7/13
Filed: 1967-05-15
Abstract: 1,173,242. Dehydrogenation process. EASTMAN KODAK CO. 15 May, 1967 [16 May, 1966], No. 22520/67. Addition to 1,115,771. Heading C2C. [Also in Division C1] In a process for producing ethylenically unsaturated compounds by heating an organic compound, which contains 2 adjacent carbon atoms linked by a single bond and each having at least one hydrogen atom attached thereto, at 450-700‹ C. in the presence of oxygen and 0À5-10%, based on weight of organic compound, of aqueous hydrogen iodide hydrate solution containing 2-60% by wt. HI, quenching the effluent from the reaction zone with previously condensed effluent and separating the ethylenically unsaturated product, free from iodine, from the condensed effluent, the aqueous residue is distilled to remove water and organic compounds boiling below 100‹ C. and then distilling the residue to obtain overhead a mixture of hydrogen iodide and water which is raised in the dehydrogenation stage. The unsaturated product may be separated from the condensed effluent by decantation. The first distillation of the aqueous residue removes organic compounds, such as alcohol and acetone, and water overhead leaving a residue which is more concentrated in HI. Distillation of this residue may yield an azeotrope of water and HI containing 57% HI which is preferably diluted to about 20% before recycling. The process is illustrated by reference to drawings (not shown) and the preparation of methyl methacrylate from methyl isobutyrate. Other specified unsaturated products are methyl 2-methylpentenoate from methyl 2-methyl-pentanoate, methyl C 8  esters from methyl 2-ethyl-hexanoate and methacrylic acid from isobutyric acid.
Patent GB-327927-A (GB)
Title: Improvements in and relating to apparatus for raising water and other liquids
IPC: F04F5/46
Filed: 1929-07-23
Abstract: 327,927. Wade, J. T. - July 23, 1929. Pumping - machines and fan apparatus.-In apparatus for raising liquids, a tube 8 is connected to the delivery pipe of a turbine or pump, and an inner tube or rising main 7 is connected to the suction side 6 of the turbine or pump, or to a reservoir. A part of the water &c. from the delivery main passes down the tuba 8 and is delivered to the main 7 through an injector cone 24 therein, drawing with it the liquid to be raised through passages 19 and a strainer 13. The casing 12 is provided with two sets of passages 19, 20. The passages 19 communicate through slots with the central bore, and the passages 20 communicate through apertures 22 with the interior of the cone 24. The main 7 may deliver to a reservoir, half the liquid returning to the pump. Where the reservoir is at an exceptional height, the pump may be multistage, the first stage delivering the liquid for the injector action, and the final stages pumping the liquid to the reservoir. When the well &c. is deep, the first stage delivers water to the reservoir, while the higher-pressure stages are connected to the injectors.
Patent GB-206936-A (GB)
Title: Improvements in or relating to apparatus for use in treating with liquids, photographic papers, films or plates
IPC: G03D13/02
Filed: 1922-08-19
Abstract: 206,936. Bamichas, P. Aug. 19, 1922. Tanks for treating photographic plates, films, and papers with liquids consist of a vessel a divided into separate compartments by removable partitions f, and a cover frame i which has openings engaging projections h on the partitions f. The cover frame i may be hinged to the vessel a and the partitions f may be perforated or slotted to permit liquid to move from one compartment to another. One edge of the tank has a notch b so that liquid will drain away when the level reaches above the cover-frame i.
Patent GB-1172170-A (GB)
Title: Thermostatic Control Unit
Inventor: SARONNI EMILIANA
IPC: F16T1/08
Filed: 1967-05-16
Abstract: 1,172,170. Temperature responsive elements. E. SARONNI. May 16, 1967 [May 20, 1966], No.22714/67. Heading G1D. [Also in Division F2] Flow of condensate from steam trap chamber 22 is controlled by a valve 18 engaged by the forked free end 26 of a U-shaped compound bi-metal plate having its other end anchored at 36. The plate comprises oppositely acting portions 32, 34 which together produce valve movements corresponding with the temperature/pressure curve for saturated steam. A spring 40 retains end 26 in engagement with the valve stem throughout the range of deflection of the plate, and an adjustable stop 44 limits this deflection.
Patent GB-696493-A (GB)
Title: Improvements in and relating to the removal of oil or oil-solvent mixtures from solid paraffin wax
IPC: C10G73/36
Filed: 1950-09-15
Abstract: A process for removing oil or an oil-solvent mixture from solid paraffin wax containing oil or oil-solvent mixture comprises washing the solid paraffin wax with a liquid which, at the washing temperature, is more viscous than the oil or oil-solvent mixture present in the paraffin wax.  The paraffin wax treated may be one obtained from mineral oil by solvent dewaxing using such solvents as propane, methyl isobutyl ketone, mixtures of methyl ethyl ketone, benzene and toluene, and mixtures of benzene and liquid sulphur dioxide.  Washing liquids which may be used according to the invention, in appropriate circumstances, are cyclohexanol, n-butyl alcohol, tetrachloro-ethane, methyl aniline, ethyl aniline, diethyl aniline, dimethyl aniline, propyl alcohol and iso-propyl alcohol.  In examples, mineral oil is solvent dewaxed at 10 DEG C using methyl isobutyl ketone as the solvent and the filter cake of paraffin wax is washed at 10 DEG C with cyclohexanol, n-butyl alcohol or tetrachloroethane.  For comparison purposes, the effect of washing the paraffin wax filter cake with methyl isobutyl ketone is described.
Patent GB-717746-A (GB)
Title: Improvements in reciprocating apparatus having a crank-case and liquid lubricant stored in the crank-case
IPC: F02G1/053
Filed: 1950-09-18
Abstract: 717,746. Refrigerating. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN. Sept. 18, 1950 [Sept. 21, 1949], No. 22873/50. Class 29 [Also in Group XXVII] In reciprocating apparatus such as a refrigerator operating on the reversed hot-gas engine e principle, having a crankcase 26 . containing lubricant and a gas subject to pressure variations due to the movement of a piston, gas containing lubricant in a finely-  divided state flows through a non-return valve 28, during the high-pressure periods, to a separator 29 from which liquid lubricant mixed with part of the lubricant-free gas returns to the crankcase: a regulator 31 may be provided to control the amount of lubricant. As shown, the separator comprises a T-shaped duct, the lubricant being deposited on the vertical wall and dripping down into a pipe 30. Part of the lubricant-free gas passes upwards into a pipe 32 and through a non-return valve 33 to a working space between a piston 22 and a displacer 21. The engine comprises the usual heater 23, regenerator 24 and cooler 25.
Patent GB-793598-A (GB)
Title: A process for recovering monomers from polyamides
IPC: B01J39/05
Filed: 1956-07-25
Abstract: Aminocarboxylic acids, a :o  - dicarboxylic acids and a :o -diamines are recovered from polyamides by treating the latter in water at an elevated temperature with a strongly acid ion exchanger and eluting the reaction products from the ion exchanger.  The polyamide may be in the form of powder or chips and is preferably pre-treated with water at an elevated temperature until the greater part has been dissolved with partial depolymerization.  Preferred temperatures are 50-150 DEG  C., and preferred ion exchangers are those of the sulphated polystyrene type.  The process may be carried out batchwise or continuously. With polyamides of the polylactam or polyaminoacid type the aminoacid products may be removed from the ion exchanger by elution with ammonia.  With mixed polyamides derived from aminocarboxylic acids and dicarboxylic acids and diamines the products may be recovered separately by elution with selective solvents; thus the dicarboxylic acid may be washed from the ion exchanger with a solvent such as an alcohol and the aminoacid may be removed by subsequent elution with ammonia, the diamine remaining bound by the ion exchanger.  The examples describe the recovery of e -aminocaproic acid from polycaprolactam; e -aminooenanthic acid from oenantholactam; o -aminoundecylic acid from the corresponding polyamide; and a mixture of adipic acid, e -aminocaproic acid and hexamethylenediamine from a polyamide derived from 50 per cent of aminocaproic acid and 50 per cent of an adipic acidhexamethylenediammonium salt.
Patent GB-332071-A (GB)
Title: Improvements in thermionic valves
IPC: H01J19/42
Filed: 1929-07-26
Abstract: 332,071. Lissen, Ltd., and CLark, J. E. July 26, 1929. Vacuum tubes. - An electrode structure consists of a flattened helical grid 5 wound on twovertical wires 6 mounted in a pinch, a flattened anode 7 surrounding the grid and carried by two other vertical wires 8 mounted in the pinch. an inverted V-shaped filament 1 mounted on leading-in wires 2 in the pinch and supporbed at the top by a wire 3 mounted in the pinch and parallel to but outside the anode, this wire being connected through insulating material such as a glass bead 9 by stays 10 with the wires 8, and optionally by stays 11 with the wires 6. The leading-in wires and the loop supporting the filament enter the grid so that the filament is wholly enclosed by the grid.
Patent GB-1011792-A (GB)
Title: Improvements in cellulose graft copolymer and process
IPC: D21C9/00
Filed: 1962-09-27
Abstract: Hydrophobic cellulose-methyl methacrylate graft copolymers are made by wetting a hydrophilic cellulose-methylmethacrylate graft copolymer with a solvent for polymethyl methacrylate which does not swell cellulose, and then removing the solvent by evaporation. Solvents specified are benzene, acetone and chloroform.  The cellulose base material may be wood pulp, cotton fibres and fabrics and regenerated cellulose fibres and sheets.  The grafting with methylmethacrylate may be carried out as described in Specification 962,028.ALSO:Paper is made from wood pulp to which has been grafted methyl methacrylate, the graft polymer of the resulting paper being rendered hydrophobic by wetting it with a solvent for polymethyl methacrylate which does not swell cellulose, e.g. benzene, acetone and chloroform, and then removing the solvent by evaporation.
Patent GB-630050-A (GB)
Title: Improvements in and relating to frequency and phase modulators
IPC: H03C3/04
Filed: 1947-08-20
Abstract: 630,050. Phase and frequency modulation. PHILCO CORPORATION. Aug. 20, 1947, No. 23087. Convention date, Sept. 25, 1946. [Class 40 (v)] Phase modulation is effected by applying a carrier wave to the grid 13 of a grid-controlled valve 10, which has a reactance 18 of one sign in its cathode lead, and a reactance 19 of opposite sign either connected or inherent between grid and cathode; and the modulating signal E is applied to a grid of the valve 10 to vary its mutual conductance, thus giving a phase-modulated carrier across the output terminals 31, 32 of the cathode reactance 18. If the reactance 19 is twice the cathode reactance 18, amplitude changes are avoided. In a modified circuit a coil in series with a blocking condenser replaces the capacity 19, and a capacity shunted by a radio-frequency choke replaces the coil 18. If the condenser 24 is of such capacity that its reactance at modulating frequencies is much smaller than the resistance 22, the modulating voltage reaching the grid is integrated, and the output wave at 31, 32 is a frequency-modulated wave.
Patent GB-183736-A (GB)
Title: Improvements in a tap attaching device
IPC: B67D1/08
Filed: 1921-08-31
Abstract: 183,736. Rogers, F. H., (American Tap Bush Co.). Aug. 31, 1921. Tapping.-A device for attaching a tap to a keg &c. comprises a plug 3 adapted to be screwed into the bung-hole and provided with an upstanding central nipple 4 having a flanged and spherically curved convex outer-end in which are diametrically opposite notches, and a thimble 7 adapted to take over the nipple and having a bayonet-slot connection with the notches in the flange thereof. The tap 1, to which is attached a union 10, is passed through the nipple and has a concave spherically curved inner end adapted to compress a washer 11 placed in the thimble between this end and the concave outer end of the nipple, thereby ensuring a tight joint even though the parts may not be in accurate alignment,
Patent GB-271699-A (GB)
Title: Improvements in memorandum appliances
IPC: B42D19/00
Filed: 1926-09-20
Abstract: 271,699. Nelson, E. A. Sept. 20, 1926. Memorandum appliances; retainers for pens and pencils.-In memorandum appliances, particularly those of the paper-roll type, the supporting surface of the paper is provided at one end with means for automatically clamping the paper, and at the other end with clamping means which automatically tensions the paper when moved into the clamping position. The paper roll 40 rests within a hollow 13 in a block 10 of wood or the like which tapers towards its front edge, the flat inclined surface being covered by a metal plate 14 over which the free end of the paper passes. Rear and side walls 17, 18 enclose the paper roll, and an inclined front plate 23 sliding between grooves in the side walls is adapted to bear upon the paper strip. A transverse clamping-bar 26 pivoted at the other end of the block is rounded to co-operate with the rounded edge of the block to impart a curl to the free end of the paper, the bar being normally held down by a leaf spring disposed within a cavity in the block. The clamping-bar is supported by arms pivoted upon the sides of the block, one arm 28 being provided with a fingerpiece 31 which is depressed to release the paper. The outer edge of the clamping-bar provides a tearing edge for the paper. Notches 19 in the upper edges of the side walls 17 provide pen and pencil rests, and the front face of the plate 23 is provided with a calendar.
Patent GB-321460-A (GB)
Title: Improvements in slide operable fastening devices
IPC: A44B19/06
Filed: 1928-08-11
Abstract: 321,460. Statham, N. Aug. 11, 1928. Sliding-clasp fastenings consist of an element with a substantially cylindrical aperture and an element with a substantially cylindrical projection on one or both sides. The element 10, Figs. 1, 2, has a cylindrical aperture 11 and jaws 14, 15 ending in clamps 14', 15<1>, while the other element 20, Fig. 4<a>, has similar jaws and projections 21<1>, 21<11>. To prevent angular movement, the aperture may be flattened at one part 61<1>, Fig. 9, and the corresponding projection similarly formed. The projection may be tapered, Fig. 12, or rounded, Fig 22, or substantially hemi-spherical, Fig. 4<a>, and the flattened part may be adjacent to, or opposite. the jaws.
Patent GB-195038-A (GB)
Title: Suction and delivery pump of the rotary type
IPC: F04B1/04
Filed: 1922-08-26
Abstract: 195,038. Soc. Anon. Bavox, (Assignees of Paret, P. L. G.). March 14, 1922, [Convention date]. Addition, to 185,099. Void [Published under Sect. 91 of the Act]. Revolving-cylinder pumps ,-In a rotary pump of the kind described in the parent Specification, the ends of the piston-rods are provided with slots r<3> engaging the eccentric-pin f, and pac.king-rings i are arranged on the periphery of the rotor b and forced against the fixed casing by centrifugal force. Packing-rings are arranged also between the rotor and the ends of the casing.