baber/WOPTO huggingface dataset:
Patent GB-632274-A (GB)
Title: Improvements in and relating to the production of unsaturated steroid derivatives
IPC: C07J9/00
Filed: 1947-10-15
Abstract: D 11 : 12-Unsaturated steroid derivatives are obtained by heating cyclopentanophenanthrene derivatives having acylhydroxy groups in the 3- and 12-positions to a sufficient temperature and for a sufficient time to cause the acyl group in the 12-position to be driven off with the formation of an unsaturated linkage between the carbon atoms in the 11- and 12-positions.  Suitable acyl residues are those of aryl, alkyl and aralkyl carboxylic acids and aryl sulphonic acids, e.g. acetic and benzoic acids. Detailed examples are given.
Patent GB-1298400-A (GB)
Title: Ball game device
Inventor: ZOESCHINGER HERBERT
IPC: A63B67/20
Filed: 1970-06-08
Abstract: 1298400 Bat and tethered ball; manipulative toys H ZOESCHINGER and G M PRUSS 8 June 1970 [16 June 1969] 27715/70 Headings A6D and A6S A ball game apparatus comprises a ball 4 connected by an elongate elastic member 3 to a swivel bearing 2 rotatable about a racket handle 11, either the ball or the racket's striking surface being elastically deformable. The ball may be a tennis ball or a shuttle cock weighted with plastic. The member 3 may be a rubber cord or braided cords, an elastomer, or a spring and may be connected by a spring hook to an eye 21 in the bearing 2. The bearing 2 is rotatable in a groove 12 in the handle.
Patent GB-996643-A (GB)
Title: Process for the production of shaped articles
IPC: C08L25/06
Filed: 1963-07-12
Abstract: Shaped articles are made by shaping at elevated temperatures a uniform mixture of a polymer of vinyl chloride, one or more monoethylenic monomers which are compatible with the polymer and a thermal polymerization inhibitor, and subjecting the shaped mixture to high energy ionizing radiation.  The examples describe homogenizing mixtures of polyvinyl chloride and styrene containing dinitro-o-cresol or tertiary butyl-catechol, moulding the mixtures, and irradiating them with X-rays. Specifications 996,641 and 996,642 are referred to.
Patent GB-714997-A (GB)
Title: Ventilation device for the brakes of automobile vehicles
IPC: F16D65/827
Filed: 1952-11-05
Abstract: 714,997. Vehicle brake ventilation. FIAT SOC. PER AZIONI. Nov. 5, 1952 [Nov. 21, 1951], No. 27874/52. Class 103(1) In a ventilation device for automobile vehicle brakes, of the type comprising a set of centrifuging channels provided in the brake drum plate and adapted to produce a cooling air stream on the friction surfaces of the brake members, the said channels extend radially outwardly from the level of the friction lining on the drum, the inlet for the cooling air is formed by an annular passage between the peripheral portion of the brake supporting disc and the free drum end. The channels 9 in plate 2 are directed radially outwards and air is drawn in through the space between the brake drum 3 and the upper edge 7a of the brake supporting disc 7, passes through the space A situated between the brake lining 10 of the brake shoes 8 and the internal lining 3a of the brake drum 3, and is expelled radially through the channels 9. In order to prevent the flow of air between the friction surfaces from becoming excessive and introducing foreign bodies between these surfaces when the vehicle is travelling at high speed, air apertures 11 may be provided in the inner part of the brake supporting disc 7 so as to create a second air current which does not pass through the space A. Fig. 3 shows a modification in which the disc 7 is provided with holes 11 with air intakes 12 preferably oppositely directed to the direction of travel of the vehicle. Each of these air intakes 12 contains a metal wool filter 13.
Patent GB-380619-A (GB)
Title: Improvements in or relating to table structures
IPC: A47B3/12
Filed: 1931-10-08
Abstract: 380,619. Tables. ABBOTT, S. S., 15, High Street, Southall, Middlesex. Oct. 8, 1931, No. 27968. Addition to 352,303. [Class 52 (iii).] In a modification of the parent Specification, the table top a is rigidly attached to the end and side parts b<2> of the framing, forming with them a receptacle closed by a plywood or other thin and flexible lid k secured by strap and buckle fastenings l. The leg sections c, d may be stowed by passing a leg of each pair through apertures m in the frame b<2>, the other leg and the parts d being stowed under the eaves of the table top, where they are supported by engaging the turn-buttons f with the adjacent leg, and by bolts or catches engaging the legs in the apertures m. In a modification, the apertures m are placed near the corners of the table, the legs c passing through them and lying close to the side part b<2> ; the other legs lie outside the frame and under the eaves. There is thus left a clear space in the middle of the receptacle.
Patent GB-378252-A (GB)
Title: Improvements relating to the manufacture of carburetted water gas
IPC: C10J1/213
Filed: 1931-10-08
Abstract: 378,252. Water gas generators. HUMPHREYS & GLASGOW, Ltd., Humglas House, Carlisle Place, London.-(Assignees of Hall, E. L. ; Broad Street, Philadelphia, U.S.A.) Oct. 8, 1931, No. 27971. Convention date, March 5. [Class 55 (i).] In the manufacture of carburetted water gas wherein the " blow " gases are burned by secondary air adjacent the fuel-bed top on to which heavy oil is sprayed, the secondary air is introduced in a downward direction through sloping conduits 8. An up-run with steam follows the " blow," the water gas being carburetted with oil delivered through a sprayer 11. In a modification, the secondary air is admitted to the generator above the top of the fuel-bed. Specification 221,622, [Class 55 (i), Coking &c.], is referred to.
Patent GB-503241-A (GB)
Title: Bobbin-cleaning apparatus for use on automatic weft-replenishing bobbin-changing looms
IPC: D03D45/20
Filed: 1937-10-15
Abstract: 503,241. Looms with automatic weft replenishment ; stripping bobbins. CLOUGH, D., BLACKBURN, O. B., and LISTER & SONS, Ltd., H. Oct. 15, 1937, No. 28085. [Classes 120 (ii) and 142 (iii)] To remove the residue yarn 12 from ejected bobbins 3, these move from a receiving shoot 1 attached to 'a casing 2 on the loom frame on to an apron conveyer 4 comprising card clothing having gaps 7 for urging forward a bobbin, which is temporarily arrested by a stop roller 9. The yarn is drawn off the bobbin by rotating nipping rollers 10, 11 before or whilst the bobbin continues its discharge movement, the roller 9 being carried by a cam and spring controlled frame 13. This is periodically rocked to raise the roller and free the bobbin, a yarn holder 6 being simultaneously lowered to engage the yarn end and prevent it leaving with the discharging bobbin, which falls through guides into a receiving shoot. The yarn holder may comprise a yielding or flexible (rubber) plate or a card covered freely rotating roller. A rubber or cloth faced metal stop 19 prevents the yarn from wrapping round the roller 10, and a brush 20 cleans loose yarns from the apron. The shoot 1 may be adjustable. According to the Provisional Specification, a lever carrying the bobbin stop may be operated by a trip pin and may have a leaf spring at its yarn holding end.
Patent GB-227563-A (GB)
Title: Improvements in or relating to box making machines
IPC: B31B17/00
Filed: 1923-11-08
Abstract: 227,563. Spencer, A. T., Wykes, E. C., and Ritchie, M. C. Nov. 8, 1923. Tape and like strips, affixing.- In box-making machines, such as that described in Specification 19718/13, in which the component blanks are united by adhesive strips, the blanks are fed and correlated in a continuous and successive manner, as by travelling bands or a series of rollers. The blanks a are fed by rollers d, on to a series of endless chains 1, so as to travel between guides b. The blanks are correlated by means of dogs 6, adjustable on the chains, and the chains are mutually adjustable by rotation of the sprockets 4, Fig. 1, on their shaft 5. To this end the shaft 5 has keyed on it hubs 7, Fig. 3, to which the sprockets 4 are attached by studs 8 which are fixed in the hub and pass through slots 9 in the sprockets. In order to further adjust the sprockets, they may be provided with a toothed segment 11, Fig. 4, engaging with an adjustable rotatable pinion 12 mounted on one of the studs 8. The chains convey the blanks to the adhesive strip applying rollers e, inclined members 15 being provided to raise the blanks clear of the dogs 6, as the latter descend over the carrier pulley 3. The adhesive strip f, Fig. 1, is fed from a carrier g over a damping device h and guide rollers and severing devices (not shown), by rollers 16, 17 having intermittent rotary movement. These rollers are driven by a chain 18 through a free wheel or one-way clutch, which comprises a sprocket 19 on a sleeve 20, having a disc 21 thereon and rotatable on the hub of a ratchet wheel 22 fast on a shaft 23 on which rollers 16 are mounted. The disc carries spring-pawls 24 to engage the ratchet 22. The chain 18 is spring-anchored at one end and is given intermittent movement by means of sprocket 25 attached to a lever 26, which is fulcrumed at 27 and moved bv a cam 30 on the shaft 5. In a modification, Figs. 5 and 6, the chains 1 are carried by sprockets 31 which are adjustably mounted on a sleeve 32 slidably keyed on to a shaft 33. The sleeves 32 are reduced to receive the sprockets 31, which are clamped by nuts 39 against the shoulders formed by the reduction. The tension of the chains may be adjusted by rollers 36. The arrangements for feeding and attaching the adhesive strip are the same as previously described, but pressing rollers 40, 41 are provided to subject the blanks to a second pressing.
Patent GB-1078876-A (GB)
Title: Shuttle feeders for gripper shuttle looms
IPC: D03J5/00
Filed: 1966-06-23
Abstract: The feeder (1) which feeds weft to a gripper shuttle has operative surfaces (8), (13) coated with a wear resisting alloy, e.g. tungsten carbide.
Patent GB-1036755-A (GB)
Title: Improvements in or relating to automatic volume control circuit arrangements
IPC: H03G7/02
Filed: 1963-07-17
Abstract: 1,036,755. Automatic gain control. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. July 17, 1963 [July 20, 1962], No. 28296/63. Heading H3Q. In an automatic gain control circuit in which the desired signal is applied to the output load through at least one gain-controlled amplifier and in which two A.V.C. voltages are derived from the signal one of which is used to produce volume compression and the other volume expansion the ratio between the two voltages is adjustable by moving the sliding contact of a potentiometer to produce a range of volume control for the amplifier. Fig. 1 shows one embodiment in which an amplifier comprises two variable gain pentode valves 3 and 6 the output from the first of which is applied, via capacitor 15, to the slider of a potentiometer 16. The ends of the potentiometer are each connected to a rectifying circuit, one rectifier, 18, supplying gain controlling bias for the pentode 3 and the other rectifier, 6, supplying gain controlling bias for the pentode 6. The polarity of the rectifiers being such that rectifier 18 provides volume compression and rectifier 28 volume expansion of the signal input to the amplifier, the proportion of compression or expansion depending on the position of the slider of potentiometer 16. If it is desired to have no other form of gain control in, e.g., a television receiver; a signal, derived for example, from the line deflection circuits, may be applied, via terminal 37, to the slider of potentiometer 16, the amplitude of the signal being sufficient, when the control is at the left-hand end of the track, to reduce the gain of the amplifier substantially to zero. An alternative embodiment, Fig. 2, comprises a variable gain pentode valve 45, a volume expansion voltage being derived by rectifier 51 connected to the input circuit and a volume compression voltage derived by a rectifier 61 connected to the output of valve 45. The two voltages being connected to opposite ends of potentiometer 56, the slider of which provides the volume controlling bias for the grid of valve 45. Again an auxiliary signal may be applied at terminal 70 to reduce the gain substantially to zero in the maximum compression position, i.e. when the slider is at the right-hand end of the potentiometer so allowing capacitor 74 to shunt choke 73 which in the other positions of the slider prevents the auxiliary signal from producing a compression bias. Choke 41 in Fig. 1 and choke 72 in Fig. 2 prevent the high-frequency auxiliary signal from reaching the audio signal path. A modification of Fig. 2 in which the auxiliary voltage is D.C. is described with reference to Fig. 2 (a) (not shown).
Patent GB-1049121-A (GB)
Title: A stabiliser for vinyl resins containing halogen
IPC: C08K5/13
Filed: 1963-07-17
Abstract: Halogen-containing vinyl resins are stabilized with a composition comprising a basic lead salt and 0.1 to 10% by weight of the lead salt of an alkyl substituted phenol free from alkoxy substituents and having eight or more carbon atoms in the chain or a phenolic resin. The resin may be polyvinyl chloride.  Specified lead salts are tribasic lead sulphate, dibasic lead phosphite and dibasic lead stearate.  In examples a composition of polyvinyl chloride and dioctyl phthalate is stabilized with mixtures of tribasic lead sulphate with (2) para octyl phenol, (3) nonyl phenol and (4) a para (C1- 5 alkyl) phenol/formaldehyde condensate; mixtures of said condensate with (6) dibasic lead phosphite; and mixtures of nonyl phenol with (7) dibasic lead phosphite and (9) dibasic lead stearate.
Patent GB-654796-A (GB)
Title: Improvements in or relating to short wave radio receivers
IPC: H04B1/30
Filed: 1948-11-03
Abstract: 654,796. Valve circuits for radio reception. COLE, Ltd., E. K., and BURNARD, C. L. Nov. 3, 1948, No. 28488. [Class 40 (v)] In a short-wave receiver in which distortion due to selective fading is reduced by reinforcing the carrier wave by means of a synchronized local oscillator, the synchronizing voltage is taken from the point in the circuit at which the local oscillations are introduced and is thereby regeneratively strengthened. The oscillator is of the cathode-coupled type and comprises a pentode 4 with the cathode connected to a tap on the tuned circuit 5, the screen being earthed for high frequencies over a condenser 7. The anode is directly connected to the transformer 2 coupling the detector 3 and the last I.F. stage of the receiver (not shown), and synchronism is obtained by means of a condenser 10 between anode and grid. This coupling, which may comprise the inherent valve capacity, is of a regenerative nature for the injected synchronizing voltage, but is made insufficient for self-oscillation to occur between the electrodes concerned. The rectified D.C. produced by the detector 3 varies according to the phase-relationship between the local oscillations and the incoming signal and may be utilized to operate a tuning indicator.
Patent GB-470444-A (GB)
Title: Improvements in or relating to artificial tooth crowns, hollow facetted teeth, or the like
IPC: A61C5/70
Filed: 1936-10-21
Abstract: 470,444. Artificial teeth. VETTER, E. Oct. 21, 1936, No. 28629. [Class 81 (ii)] Artificial tooth crowns made of ceramic and other materials are formed with comparatively thin walls having internal strengthening ribs extending from the base to the distal end of the interior of the tooth. Transverse notches may be provided in the ribs to assist the attachment of the crown by means of adhesive to a stamp, pin or other support. Figs. 1 and 2 show a crown for a front tooth provided with two ribs b, Fig. 20, a crown having a number of ribs and Fig. 23 a hollow facetted tooth.
Patent GB-1157754-A (GB)
Title: Orally Active Heparin and method of making and using same
Filed: 1967-06-21
Abstract: 1,157,754. Anticoagulant comositions. CANADA PACKERS Ltd. 21 June, 1967 [29 June, 1966], No. 28685/67. Heading. A5B. [Also in Division C3] An enteric-coated blood anticoagulant composition, e.g. a pill, capsule or tablet, which contains heparin in a form capable of absorption from the intestinal tract contains as the active component an acid salt of heparin (see Div. C3) which has an average of not more than six of the seven available cationic sites in the sulphated regularly recurring tetrasaccharide unit which is composed of hexosamine and hexuronic acid units occupied by a physiologically acceptable cation, e.g. Na, Li, K, or/choline. A dossage unit of 15000 anticoagulant units (U.S.P.) is mentioned.
Patent GB-696013-A (GB)
Title: Improvements in or relating to apparatus for and method of making ice
IPC: F25C1/22
Filed: 1951-12-07
Abstract: 696,013. Ice-making. FLAKICE CORPORATION. Dec. 7, 1951 [Dec. 11, 1950], No. 28716/51. Class 29. Ice-making apparatus comprises a casing 4 in which is mounted a rotating evaporator 24 over which water to be frozen is sprayed in excess from pipes 26, 28 and which is supplied with liquid refrigerant from a receiver 14 by a pump 16 and pipe 40, the pipe 40 being continued by a pipe 84 having pairs of upwardly directed apertures 86 so that the refrigerant spray will remove any oil film from the interior wall of evaporator 24, the oil and unevaporated refrigerant being withdrawn through a pipe 80 and a pipe 44 to the receiver whence the oil is returned to compressor 18 through connection 43 and the liquid refrigerant is recirculated. The pipes 26, 28 are connected to a pump 10 which draws water from a reservoir 8 to which the excess water returns from the bottom of the casing 4 by a pipe 38. A freely-rotating helically-bladed cutter 30 is mounted above the evaporator and wedges off the formed ice in pieces which are caught on a shoot 88 which is warmed by electric heaters and which can be pivoted slightly about a horizontal axis to adjust its proximity to the evaporator. The ends 46 of the evaporator are belled inwards and have plane portions sealed to the cylindrical surface of the evaporator to prevent cooling of the ends thereof. The spray pipe 28 is adjustable to and from the cutter 30 to allow control of the quality of ice.
Patent GB-1172542-A (GB)
Title: New 6-Hydroxy-1,3-Dialkylbenzotriazolium Salts
Inventor: SUREAU ROBERT FREDERICK MICHAE
IPC: C09B29/033
Filed: 1965-12-09
Abstract: 1,172,542. 6 - Hydroxy - 1,3 - dialkylbenzotriazololium salts. UGINE KUHLMANN. 8 Dec., 1966 [9 Dec., 1965], No. 28751/69. Divided out of 1,172,541. Heading C2C. The invention comprises 6-hydroxy-1,3-dialkyl-benzotriazolium salts of the formula wherein X represents a monovalent anion. They may be obtained by hydrolysis of the corresponding 6-amino-1,3-dialkylbenzo-triazolium salts in dil. H 2 SO 4  solution at a temperature between 175‹ C. and 220‹ C. Examples are given for the preparation of the compounds. They are useful for the preparation of dyes.
Patent GB-890057-A (GB)
Title: Improvements in means for heating textile yarns
Inventor: DOBSON AUSTIN
IPC: D02J13/00
Filed: 1959-08-22
Abstract: 890,057. Finishing yarns. SCRAGG & SONS Ltd., ERNEST. Aug. 3, 1960 [Aug. 22, 1959], No. 28786/59. Class 120(3) Apparatus for heating a running yarn, as in a shrinking, stretching, twist-setting or false-twist crimping process, comprises spaced, smooth elements which guide the yarn in a generally curved path and a heater which applies heat e.g. by radiation or conduction from hot gas and/or by convection, to the yarn as it moves along such path. As shown, yarn 2 is fed under a slight tension by driven nip rollers 3, 4, through a guide 5 into a thermally insulated casing 10 having an extractor vent 11 connected to a pump 12, and is withdrawn therefrom through a guide 6 by driven nip rollers 7, 8. The yarn passes over smooth pins 1 located on an arcuate or partially elliptical curve and is heated by an electric resistance heater 9 which maintains the pins at a temperature in excess of that of the yarn. The yarn path may be shaped concavely or convexly in relation to the heater.
Patent GB-1216807-A (GB)
Title: Automatic apparatus for manufacturing earthenware or stoneware pipes
Inventor: PAAPE FRIEDRICH
IPC: B28B21/90
Filed: 1969-06-06
Abstract: 1,216,807. Moulding pipes. KERAMIKMASCHINEN GORLITZ VEB. 6 June, 1969, No. 28821/69. Heading B5A. Automatic apparatus for the continuous production of earthenware pipes includes a multiple press 2 for extruding pipes 24 in a vertically downward direction, and two spaced pillars 1 supporting the press and each having means for guiding the vertical movements of associated pipe receiving tables 7, 8. Conveyer means 3 extend between the pillars and receive the pipes transferred from the tables by transfer means 23, 28-30 associated with each table and carried by transversely movable carriages 21, 22 mounted on a guide track 20 attached to the press. The conveyer means may include a series of aligned carriages 3 intermittently driven by endless conveyer chains 43, 45 with drive members 42 which engage pawls 41 depending from the carriages. The latter are transversely fed to, and removed from, the chains by travelling platforms 47. On the completion of the extrusion of the pipe on to its associated table 7 or 8, which is moved vertically by piston and cylinder mechanism 13, 15, a suction gripping means 23 engages the pipe, and a linkage 28-30 driven by a rotating crank lever, not shown, engaging a slot in a lever 29 turns the pipe through 180 degrees and places it vertically on a carriage 3.
Patent GB-1248042-A (GB)
Title: Improvements in or relating to ploughing
Inventor: FARMER ROBERT LESLIE EDWARD
IPC: A01B13/14
Filed: 1968-06-18
Abstract: 1,248,042. Agricultural implements. R. L. FARMER Ltd. 12 June, 1969 [18 June, 1968], No. 28849/68. Heading A1B. A plough comprises a frame 1 with shares vertically adjustable relative to the frame and arranged in pairs in which one. share 2 is set lower than share 3 in order that the surface strip cut by share 3 is buried at the base of a deep furrow formed by share 2. Each share is attached to a post 6 having three pairs of projections 7 which enables the share to be held in one of two vertically separated positions within openings provided in frame 1 by means of a profiled block 8, plain block 9 and wedge 10. Each post 6 as shown is attached to the base of a box 13 which is slideable inside a box 12 fixed to frame 1, the boxes having slots 14 such that when in register they can be held together by means of horizontal arms 16 mounted on pivot pins 15. A castor wheel 20 is mounted on an arm 23 (not shown) which is pivotable about a transverse axis and to which an hydraulic ram 27 (not shown) is attached. The ram is coupled to the tractor hydraulic system such that the front and rear of the plough are lifted simultaneously. The lower links of the tractor three point linkage are attached to the crossbar 37 and the upper link is connected to a pivotable headstock 30 having springs 30 and a check chain 35 attached to allow the plough to adjust its attitude over uneven ground within the limit set by the check chain.
Patent GB-598513-A (GB)
Title: Improvements in or relating to beach sandals
IPC: A43B5/08
Filed: 1945-10-31
Abstract: 598,513. Beach sandals. BARRIE, A. Oct. 31, 1945, No. 28935. [Class 17 (ii)] A beach sandal 1 has spaced slats 2 of wedgeshaped cross section extending transversely from edge to edge at the forepart and heel only of a sole of flexible material. The sole may be attached to the foot by a strap or straps which. pass aroung the foot and ankle, and tied, hooked or buckled together, or a thong, lace or the like may be passed through transverse slots in the thickness of the sole. The sole at the toe end 3 is equal in thickness to the combined thickness of sole and slats and may be of a synthetic resin plastic, wood, leather, rubber, natural or synthetic, composition, or metal such as an aluminium alloy, and may be in sections hinged about transverse axes to facilitate bending and folding for packing &c. Specification 571,250 is referred to.