baber/WOPTO huggingface dataset:
Patent GB-535700-A (GB)
Title: Improvements in and relating to drawing apparatus
IPC: B43L13/02
Filed: 1939-10-13
Abstract: 535,700. Drawing appliances. EVANS, W. J. Oct. 13, 1939, No. 27811. [Class 97 (iii)] In a drawing appliance of the kind in which a straight edge is mounted for movement parallel to itself across a board the straight edge 50 is mounted at one edge only on a V-shaped guide 61, Fig. 4, and is provided at its other end with spring-controlled rollers 63, Fig. 5, and the straight edge is provided with inclined celluloid edges 64, Fig. 5, and is mounted in relation to a graduated scale 85, Fig. 1. The drawing paper is clamped to the board by clamping plates 69, Fig. 7, having abutments 68 upon which bear cams 66 pivotally mounted on the board and operated by levers 67, Fig. 7. An additional straight edge 73, Fig. 1, is pivotally mounted on a sleeve 75 slidable on a hollow rod 74 by means of a counterpoise comprising cord 79 and counterweight 81, Fig. 1. The scale 85 is connected to the straight edge 50 by a cord and weight so that the scale may move with the straight edge if desired. If, however, the scale is fixed by the clamp 87 the straight edge moves along the scale against the tendency of the weight to restore the relation. The board 55, which may be rotated, is carried by a spider having a number of adjustable spokes. The apparatus may be mounted on an easel, Fig. 2, having adjustable feet 99 and a tracing board 98. Specifications 476,568, 485,146, 535,698 and 535,699 are referred to.
Patent GB-739077-A (GB)
Title: Improvements in the production of sulphur-containing condensation products
IPC: C07C329/00
Filed: 1952-11-05
Abstract: Organic hydroxyl or sulph-hydryl compounds are condensed with 1-20 or more mols. of alkylene oxide, the resulting hydroxyalkyl compounds being converted to xanthates by reaction with alkali hydroxide and carbon disulphide and a further 1-20 or more mols. of alkylene oxide being then added to the xanthates.  The products may be further esterified or etherified if desired. Alkylene oxides mentioned are ethylene, propylene, 1,2-butylene, 2,3-butylene, isobutylene and mixtures thereof.  Various hydroxyl and sulph-hydryl compounds are listed.  Alkali hydroxide used in the xanthation is set free in the subsequent hydroxyalkylation and may be centrifuged, purified and re-used.  The products are suitable as insecticides, plasticizers or polymerization regulators.  In the examples propylene oxide is employed in each hydroxyalkylation stage.  The starting materials are (1) 2-ethylhexanol-the final product being butylated; (2) 2-methyl-1,3-pentanediol-the final product being acetylated; (3) dicyclopentadiene - ol; (4) octylphenol; (5) tertiary butyl cresol-the final product being esterified with 2-ethyl butyric acid; (6) thiophenol; (7) mercapto-benzothiazole.ALSO:Organic hydroxyl or sulphhydryl compounds are condensed with 1-20 or more mols. of alkylene oxide, the resulting hydroxyalkyl compounds being converted to xanthates by reaction with alkali hydroxide and carbon disulphide and a further 1-20 or more moles of alkylene oxide being then added to the xanthates.  The products may be further esterified or etherified if desired. Alkylene oxides mentioned are ethylene, propylene, 1,2-butylene, 2,3-butylene, isobutylene and mixtures thereof.  Various hydroxyl and sulphhydryl compounds are listed. Alkali hydroxide used in the xanthation is set free in the subsequent hydroxyalkylation and may be centrifuged, purified and re-used.  The products are suitable as insecticides, plasticizers or polymerization regulators.  In the examples propylene oxide is employed in each hydroxyalkylation stage.  The starting materials are (1) 2-ethylhexanol-the final product being butylated; (2) 2-methyl-1,3-pentanediolthe final product being acetylated; (3) dicyclo pentadiene-ol; (4) octylphenol (5) tertiary butyl cresol-the final product being esterified with 2-ethyl butyric acid; (6) thiophenol; (7) mercapto-benzothiazole.
Patent GB-288911-A (GB)
Title: Improvements in mechanism for producing folded products
IPC: B65H45/28
Filed: 1927-10-19
Abstract: 288,911. Hoe & Co., Ltd., R., (Hoe & Co., Inc., R.). Oct. 19, 1927. Delivery apparatus; cutting- apparatus. - In apparatus for producing and trimming folded products such as magazines, pamphlets, &c., the product after leaving the folding-mechanism is stopped while the side-trimming mechanism is operated, and is then forwarded to mechanism for trimming the edge opposite to the fold. The product is folded by a knife between rollers, and then directed by a pivoted guide either to delivery mechanism or to tapes 15, Fig. 2, and rollers 21 conveying the product, with its folded edge leading, against front stops 23. These stops are carried by a shaft 25 oscillated by a lever 26 controlled by a spring 31 and a roller 27 running on a cam 28 carried by a shaft 30. Resilientlymounted by means of springs 44 in blocks 43, inside frames 25', 25<11>, are presser-feet 32, 33, Fig. 3, which clamp the product against supports 34, 35 while knives 59 co-operate with ledges 58 on the supports to trim the side edges. The frames 25<1>, 25<11> are provided with cam rolls 48 riding in cam grooves 49 in the cam 28 and have guide rods 54 sliding in brackets 55 secured to frames 56, 57, on which the knives 59 are adjustably-mounted by means of a setscrew 62 and a bolt-and-slot connection 60. The frames 56, 57 are reciprocated by the engagement of an eccentric 66, Fig. 2, on the shaft 30 with an opening 65 therein. Means are provided for adjusting the supports 34, 35 comprising a bolt-and-slot connection to the main frame 20, and an adjusting screw 39. After the side trimming, the stops 23 are raised, and the product forwarded to a second set of tapes 69 and stops 76 which together with side guides 136 position the product for the trimming of the edge opposite the fold by means of a knife 95 situated between the sets of tapes. Finders 74 support the product as it passes from the tapes 15 to the tapes 69. A presser foot 103 cooperates with a support 104 to change the product during the trimming operation, the support 104 being attached by a bolt-and-slot connection to the main frame 106 and adjusted by means of a set-screw 110 engaging a bevelled end 111 on the support. The foot 103 and knife 95 are operated from a shaft 90 and adjusted in the same way as the feet 32, 33 and knives 59. The stops 76 are carried by arms 77 mounted on a shaft 78 which is rocked by means of co-operating cam projections 93, 94, from a shaft 83 having arms 82 carrying drop rollers 81 co-operating with the tapes 69 to deliver the product when the stops 76 are raised. The shaft 83 is operated from the shaft 90 by means of a cam 89 engaging a roller 88 on a member 85 guided in a bracket 87 and pivoted to an arm 86 on the shaft 83. The shaft 90 is coupled by bevel gears 119, 120 to the shaft 30, which, together with the tape rollers, is driven from a main shaft through intermediate gearing.
Patent GB-1169062-A (GB)
Title: Large Capacity Loader Bucket
IPC: E02F3/40
Filed: 1967-06-16
Abstract: 1,169,062. Excavator buckets. CATERPILLAR TRACTOR CO. 16 June, 1967 [18 July, 1966], No. 27903/67. Heading E1F. The back wall of a loader bucket is formed with a pair of laterally spaced re-entrant chambers 24 for pivotal connections 14, 18 by which the bucket is connected to lift and tilt linkages carried by a tractor.
Patent GB-190306-A (GB)
Title: Improvements in and relating to apparatus operable at high voltages in an enclosed tank
IPC: H05G1/54
Filed: 1921-10-21
Abstract: 190,306. British Thomson - Houston Co., Ltd., (General Electric Co.). Oct. 21, 1921. Transformers. - X-ray or other high voltage apparatus 1 is enclosed with its transformer 6 in an cil-filled metal tank which together with one of the primary leads shown at 8, is earthed. The second primary lead is passed through an insulating bushing 9 in the tank and is connected through a rubbing contact 15, w h i c h facilitates movement of the apparatus, to one terminal of the secondary of a transformer 10, the other terminal of which is earthed. The transformation ratio of this transformer is variable, as indicated in the figure, and one of the primary terminals is earthed. It is energized from a third transformer 14. The energy for the heating circuit cf the cathode of the X-ray tube may be supplied from end turns of the transformer 6 by a conductor 7. Specification 145,839 is referred to.
Patent GB-285120-A (GB)
Title: Improvements in or relating to devices for controlling wireless apparatus
IPC: H03J1/08
Filed: 1926-11-08
Abstract: 285,120. Wood, R. C. Nov. 8, 1926. Wireless tuning-apparatus, adjustment devices for.-A condenser or other piece of apparatus for a wireless set is controlled by a handle or the like having a constant extent of movement, but connected to the condenser &c. adjustable so as to give a variable control. In the arrangement shown the sliding handle 2 is connected to a rack 1 gearing with a pinion 3 carrying an arm 6 to which is pivoted a link 8. On the link 8 slides a member 9 provided with a clamping-screw and carrying a pin which engages with a slot 10 in an arm 11 on the condenser spindle. By adjusting the member 9 on the link 8 the angle turned through by the condenser spindle for the full travel of the handle 2 can be regulated. For the rack 1 and pinion 3 may be substituted a rotary member, which may also function as a switch.
Patent GB-853770-A (GB)
Title: Improvements in or relating to loudspeaking telephone systems
Inventor: SIMPSON ARTHUR IAN FORBES
IPC: H04M9/08
Filed: 1957-09-05
Abstract: 853,770. Two-way transmission. MODERN TELEPHONES (GREAT BRITAIN) Ltd. Sept. 1, 1958 [Sept. 5, 1957], No. 28042/57. Class 40 (4). Speech incoming to a loud-speaking telephone station increases the load current taken by a class B amplifier and this increase is used to control a variable impedance to block speech in the outgoing direction. As shown, the station 13 is connectible to another station such as 10 over a switching selector 18. Incoming speech goes to a loud-speaker over a multistage transistor amplifier 16 one stage at least of which works in class B and consequently increases the current taken from D.C. power supply terminals 20, 21. One diagonal of a bridge of four filament lamps 22-25 is connected in the power supply so that the impedance of the other diagonal increases as the signal to the loud-speaker increases. The other diagonal shunts the secondary of a transformer 26 in a bridge circuit, with resistors 29, 30, 31, such that with maximum load current taken by amplifier 16 the bridge is balanced and outgoing signals from microphone 15 over transistor amplifier 17 are blocked. With no incoming signals the bridge is out of balance and outgoing signals may be transmitted. Amplifier 17 may be class B and its load current used to control an impedance in a bridge between the amplifier 16 and loud-speaker to block incoming speech during periods of outgoing speech. The use of filament lamps provides a time constant. The amplifier outputs may directly control saturable transformers to block speech. Specification 853,671 is referred to.
Patent GB-478839-A (GB)
Title: Improvements in or relating to the production of tanning agents
IPC: C14C3/20
Filed: 1936-10-15
Abstract: For the manufacture of tanning-agents, a mixture of (a) an aromatic hydrocarbon, a phenol or an aromatic carboxylic acid, with (b) urea or a urea derivative or a reagent which yields urea or a urea derivative under the reactions conditions, is sulphonated, and the sulphonation product is condensed with an aldehyde and then neutralized.  Specified components of type (a) are benzene, toluene, naphthalene and its homologues, higher coaltar fractions such as anthracene and heavy oil, phenol, cresol, xylenol, mixtures of phenols such as commercial cresylic acid, halogenated phenols such as o-chlorophenol, salicylic acid, m- and p-hydroxybenzoic acids and their homologues, and phthalic acid, which may be taken as such or as phthalic anhydride or as a mixture of phthalic acid and phthalic anhydride.  Specified urea derivatives are thiourea, thiocarbanilide and guanylurea, while cyanamide is specified as a substance which yields urea under the reaction conditions.  Specified aldehydes are formaldehyde, acetaldehyde, crotonic aldehyde, glyceric aldehyde, benzaldehyde and salicylaldehyde.  An example is given in which a mixture of cresylic acid and urea is sulphonated with sulphuric acid, and the product is treated with formaldehyde and then neutralized with caustic soda.
Patent GB-1427876-A (GB)
Title: Process for the production of o-sec-butyl-phenol
IPC: C07C37/14
Filed: 1974-06-25
Abstract: 1427876 o-Sec-butylphenol UNION RHEINISCHE BRAUNKOHLEN KRAFTSTOFF AG 25 June 1974 [3 July 1973] 28087/74 Heading C2C o-Sec-butyl phenol is prepared by treating phenol with n-butylenes in the presence of a metal phenolate catalyst, e.g. aluminium phenolate at a temperature of 140-240‹ C. under a gauge presence of 2-50 atm. The butylene mixture may also contain some nbutane.
Patent GB-499990-A (GB)
Title: Improvements in and relating to containers adapted for the storage and throwing out of subdivided solid materials
IPC: B65D5/06
Filed: 1937-10-15
Abstract: 499,990. Fire - extinguishers. LOWENSTEIN, L. Oct. 15, 1937, No. 28140. [Class 47 (ii)] A device for fire extinguishing purposes consists of a cylindrical or angular crosssection container of waterimpermeable flexible material, such as proofed paper, partly filled with suitable powdered material and closed at the end by a metal strip 7 pressed over the folded end 6. Specification 437,094 is referred to.
Patent GB-1148221-A (GB)
Title: Multivibrator capacitor microphone circuit
IPC: H03F3/183
Filed: 1966-06-23
Abstract: 1,148,221. Capacitor microphone circuits; pulse modulation circuits; transistor amplifying and generating circuits. SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ N.V. 23 June, 1966 [25 June, 1965], No. 28190/66. Headings H3T, H4J and H4L. A capacitor microphone circuit comprises an astable multivibrator having R-C coupling between the stages, the capacitance of one of the couplings comprising the capacitor microphone. Transistors 10, 11 forming stages of an astable multivibrator are earth connected by diodes 16, 17 which prevent back biasing and possible damage. A fixed capacitor 12 and resistor 13 form one R-C coupling, between the collector of transistor 10 and the base of resistor 11. A resistor 14 and capacitor microphone 15 form an R-C coupling between the collector of transistor 11 and the base of transistor 10. In the absence of an acoustical input signal to the capacitor microphone the impedances of the two coupling circuits are matched. Impedance matching transistors 20, 21 in emitter follower configuration shape the square wave pulses from the multivibrator. Diodes 24, 25 prevent back biasing of the transistors 20, 21. The transistors 10, 11, 20, 21 are powered from a positive power source through dropping resistors. Diodes 22, 23 prevent the multivibrator from assuming a state in which both transducers 10, 11 are conducting. The multivibrator output signal passes to a low-pass filter 30 in parallel with a filter circuit 50, 51. Filter 30 removes signals at the multivibrator frequency and only passes the average voltage signal. A difference amplifier 31, 32 supplies an output signal related to the difference in voltage between adjacent pulses of the multivibrator signal. A diode 33 cancels out the emitter to base voltage of a transistor 35 and thus balance the difference amplifier 31, 32. Transistors 34, 35 provide an additional stage of amplification for each half of the difference amplifier 31, 32. The filter circuit 50, 51 has a pass band for passing low frequencies to which the microphone circuit is not to respond. Capacitors 40, 41 and resistors 52, 53 provide negative feedback to improve the stability of the difference amplifier 31, 32. The output of the difference amplifier 31, 32 is amplified by a transistor stage 42 and by push-pull stages 43, 44. The signal at output 45 is a voltage signal related to the acoustical input signal to the microphone 15.
Patent GB-991883-A (GB)
Title: Instruction kit for building radio and other electrical circuits
IPC: B23Q35/10
Filed: 1960-08-15
Abstract: 991, 883. Educational appliances. HALROY PRODUCTS Ltd. (Transistor Industriel). Aug. 14, 1961 [Aug. 15, 1960], No. 28207/60. Heading G5G. [Also in Division H1] An instruction kit for building radio and other electrical circuits comprises a baseboard 1 with uniformly spaced apertures 2, and a number of circuit components each mounted on a block provided with pins fitting into the apertures 2. A number of circuit sheets also are provided each consisting of a paper sheet 3 of the same size as the base 1 and having thereon a circuit diagram 9 and illustrations of the component in their required positions. Holes 6 in the sheet indicate where the pins are to be inserted so that by placing the sheet 3 on the base the components can be readily assembled. Sets of wires of different lengths may form part of the kit and each mounting block has spring terminals whereby the components can be connected by the wires. The components can include a tuning coil, low and high frequency transistors, diodes, capacitors, battery holder, morse key, resistors and an earphone which can be used as a microphone.
Patent GB-648280-A (GB)
Title: Improvements in the production of cellular concrete blocks and the like
Inventor: STARNES PETER EDWARD
IPC: C04B28/22
Filed: 1947-10-22
Abstract: A light-weight cellular concrete, comprising one part by weight of Portland cement, 0.3-1.5 parts of pulverized fuel ash, and 0.5-4.7 parts of sand, is prepared by mixing the cement, ash, and sand, adding in succession water to form a creamy slurry, aluminium powder in suspension in a wetting-agent, and alkali, the mix being finally poured into moulds and cured.  Curing is preferably effected by allowing the mass to stand in the mould in a humid atmosphere at room temperature for a number of hours and then, after removing from the mould, in saturated steam.  There may be present in the mix 0.001-0.005 part by weight of powdered aluninium, 1.2-3.5 millilitres per pound of cement of a 30 per cent caustic soda solution, a small proportion of a non-ionic wetting agent, e.g. "Lissapol N" (Registered Trade Mark), and water.  The Portland cement, sand and fuel ash are first mixed dry, water is added and mixing continued, the aluminium powder in suspension in the wetting-agent is thoroughly incorporated, and the caustic soda solution is then added.
Patent GB-1467608-A (GB)
Title: Guide member for a vehicle seat belt
IPC: A47K10/14
Filed: 1975-07-04
Abstract: 1467608 Seat belt guide LOYDS INDUSTRI AS 4 July 1975 [20 May 1975] 28269/75 Heading A3V [Also in Division E2] A seat belt guide, stated to yield under stress applied to a belt guided therein, comprises a length of steel bar of circular cross section in the form of a belt receiving loop closed by end portions 5 comprising first portions 8 which extend towards each other and second parts 9 extending at 90 to the first parts and which are parallel and adjacent to each other and are provided with a hole 6 for securing the clip to a pillar member. As shown, the parts 9 are flattened and enclosed by a flattened tube apertured at 10, alternatively the parts may be welded together or enclosed by a steel plate. The plane of the loop is inclined to the ends 9; the guide may be enclosed in a plastics cover which also covers a guide securing bolt head.
Patent GB-274690-A (GB)
Title: Manufacture of artificial threads from viscose
IPC: D06M11/55
Filed: 1926-01-11
Abstract: 274,690. Lilienfeld, L. Jan. 11, 1926. Addition to 274,521. Cellulose xanthates, processes for making filaments from.-Artificial threads of high dry tenacity are obtained from viscose by using a setting bath in which the sulphuric acid of the parent Specification is substituted in part or whole hy a concentrated solution of another mineral acid, for instance, 25-40 per cent hydrochloric acid, 60-90 per cent nitric acid, phosphoric acid of 1.5-1.86 specific gravity, and 60-90 per cent arsenic acid, or in fact any mineral acid solution which has an hydrogenion. concentration not less than that of a setting bath comprising a solution of sulphuric acid, containing at least 55 per cent by weight of acid, as described in the parent Specification.
Patent GB-382053-A (GB)
Title: Improvements in fire-extinguishers
IPC: A62C13/00
Filed: 1931-10-12
Abstract: 382,053. Fire-estinguishers. SPARKLETS, Ltd. and CAMPBELL, R. H., Prana Works, Angel Road, Upper Edmonton, London. Oct. 12, 1931, No. 28299. [Class 47 (ii).] In a fire-extinguisher of the kind charged with an extinguishing medium under pressure, a soft metal closure 3 adapted to be broken to liberate the medium is screwed into the outlet member 2 of the extinguisher up to a shoulder 2b, and is then expanded laterally by pressure. A handle 4, for breaking the closure, is screwed on to its projecting end. The hollow portion of the closure may be lined by a hard metal tube 5. In a modification, Fig. 4 (not shown), a handle for breaking the closure is pivoted to the outlet member 2. In another modification, Fig. 6, a nut 6 with enlarged head 6a is screwed to the projecting end of the closure. The nut engages in a keyhole slot 8a in a mounting bracket 8 whereon the extinguisher is retained by clips 7. Angular disengagement of the extinguisher from the clips causes the nut 6 to break the closure. Specification 253,744, [Class 77, Life-saving &c.], is referred to.
Patent GB-1502188-A (GB)
Title: Apparatus in which in use thereof bodies are decelerated
IPC: A62B1/20
Filed: 1975-07-04
Abstract: 1502188 Personnel shoots SOBERAL SA 4 July 1975 [23 July 1974] 28389/75 Heading A5A [Also in Divisions B7 and B8] Apparatus through which bodies pass and which is capable of decelerating the bodies passing therethrough, comprises a tubular arrangement 3 having flexible walls 7, 8 and extensible annular chambers 6 which are disposed between the walls 7, 8, the chambers 6 being connected to a regulator 13 for pressurized fluid so that the pressure of fluid in the chambers 6 imposing a braking force on a body which is passing down through the tubular arrangement 3. The wall 7 is non-extensible in its longitudinal direction. Pneumatic detector 15 measure the speed of the body and adjust the regulator 13 accordingly.  In an alternative embodiment of the apparatus, Fig. 1 (not shown), the tubular arrangement (3) comprises a single extensible chamber (6) defined between inner and outer sleeves (7, 8), the sleeve (7) being non-extensible in its longitudinal direction. The chamber (6) is connected to a regulatable source (9) of compressed air.
Patent GB-1318554-A (GB)
Title: Intrauterine device
IPC: A61F6/14
Filed: 1970-06-12
Abstract: 1318554 Intrauterine devices MICHAEL REESE HOSPITAL & MEDICAL CENTER 12 June 1970 [16 June 1969] 28616/70 Heading A5R An intrauterine device comprises at least one capsule containing a progestin contained within a partially permeable wall. In the embodiment shown in Fig. 1, the device comprises three silicone elastomer tubes 11, 12, 13 containing progestin. These tubes are joined by polyethylene corner pieces 14, 15, 16 so that the whole aquires a generally triangular shape. In other embodiments (not shown) the device may comprise rings, spirals, bows or double S loops. The triangular device may be elastically distended so that it is easily inserted into the uterus using the forked applicator (21) and a string (22) (Fig. 2). Oncee the device is in place the capsules slowly release the progestin at a rate dependent upon the directions of the capsule walls. The recommended progestin is d1-11#-ethyl-17a-ethinyl-17#-hydroxygon-4-ene -3-one although others are exemplified.