baber/WOPTO huggingface dataset:
Patent GB-400776-A (GB)
Title: Manufacture of arseno-compounds
IPC: C07F9/70
Filed: 1932-11-01
Abstract: Arseno compounds; arsinic acids; arsen oxides and arsines.--Asymmetrical arseno compounds containing a -- OCH2.COOH group but no free amino group and in which one component is a pyridine or quinoline residue are prepared by (1) reducing a phenoxyacetic acid-arsinic acid or an arylarsinic acid having an imidazole ring containing a phenoxyacetic acid residue with a pyridine or quinoline arsinic acid, (2) converting the corresponding trivalent arsenic compounds into the said products by known methods, or (3) treating the corresponding arseno compound containing an hydroxyl group with chloracetic acid. According to the examples, (1) 4-acetylamino-2-phenoxyacetic acid-1-arsinic acid and 2-pyridone-5-arsinic acid are reduced with hypophosphorous acid; (2) a mixture of 3-acetyl-amino-4-phenoxyacetic acid-1-arsinic acid and 2-hydroxy-3-bromopyridine-5-arsinic acid is reduced with sodium hydrosulphite; (3) 1-methyl-2-oxyacetic acid-benzimidazole-5-arsinic acid, prepared by treating 1-methylbenzimidazolone-5-arsinic acid with chloracetic acid, is reduced in presence of 2-pyridone-5-arsinic acid using hypophosphorous acid; (4) an arseno compound is prepared by reduction with hypophosphorous acid of 4-acetylamino-2-phenoxyacetic acid-1-arsinic acid and 2 : 8-dimethylquinoline-5-arsinic acid, the latter being obtained by treating 4-methyl-3-aminophenyl-1-arsinic acid with crotonaldehyde in presence of nitrobenzene and hydrochloric acid; (5) 3-acetylamino-4-phenoxyacetic acid - 1 - arsinic acid and 7-nitro-8-hydroxy-2-methylquinoline-5-arsinic acid, prepared by the reaction of 3 - amino - 4 - hydroxy - 5 - nitrobenzene - 1 - arsinic acid with crotonaldehyde in presence of nitrobenzene and hydrochloric acid, are reduced with sodium hydrosulphite and the product treated with acetic anhydride; the arseno compound, which contains a 7-acetylamino group in the quinoline nucleus, may also be obtained by the use of 7-amino-8-hydroxy-2-methylquinoline-5-arsinic acid, itself prepared from the corresponding nitro compound by reduction with ferrous hydroxide; (6) a mixture of 1-methyl-2-oxyacetic acid-benzimidazole-5-arsinic acid and 2-pyridone-5-arsinic acid is reduced with Rongalite (a registered Trade Mark) to give the same arseno product as (3); (7) 2-pyridone-5-arsinic acid is reduced with zinc dust to the arsine and treated with 3-acetylaminobenzene-4-oxyacetic acid - 1 - arsenoxide, obtained by reduction with sulphurous acid of the corresponding arsinic acid; (8) 2-pyridone-5-arsinic acid and 4-acetylamino-3-hydroxybenzene-1-arsinic acid are reduced with hypophosphorus acid and the arseno compound treated with chloracetic acid.  Specification 250,577, [Class 2 (iii), Dyes &c.], is referred to.
Patent GB-1310958-A (GB)
Title: Methods for the production of steel having a low carbon content
IPC: C21C7/10
Filed: 1970-06-24
Abstract: 1310958 Decarburizing molten metals VEREINIGTE OSTERREICHISCHE EISEN-UND STAHLWERKE A G 24 June 1970 [8 July 1969] 30766/70 Heading C7D Rimming steel having a carbon content of 0À02 to 0À04% and an oxygen content exceeding 0À06% is tapped without the addition of deoxidisers, and is then vacuum treated to reduce the carbon content to below 0À01%, fine-grained carbon being added during the treatment. Preferably 0À01% to 0À04% of carbon is added in total, each portions each amounting to 0À003-0À005% of the melt. The steel may contain minor amounts of chromium.
Patent GB-958679-A (GB)
Title: Stock feeding device for multiple-station indexing machine tools
IPC: B23B13/00
Filed: 1960-09-07
Abstract: 958,679. Lathe details. USINES TORNOS FABRIQUE DE MACHINES MONTIER S.A. Sept. 7, 1960 [Sept. 11, 1959], No. 30802/60. Heading B3T. A bar stock feeding device for a multi-spindle lathe in which the spindles carried by a rotatable turret are progressively brought into a barfeeding station and the tool slide is moved towards the work, comprises a cam-actuated reciprocating gripper, the bar feeding motion of which is produced by one reciprocating member, and the retraction of which is produced by a second reciprocating member. The lathe comprises a number of spindles 1 carried by a turret 2 rotatable about a shaft 3, and a rotating cam 9 co-operating with a lever 12 pivoted at 13, and having a link 15 adjustably secured thereto. The link is pivoted to a sleeve 16 slidable on guides 22, 23, and a projection 17 on the sleeve engages a collar 24 on the gripper 7 in the spindle so that on rotation of the cam, the gripper is retracted from the spindle. The forward position of sleeve 16 is fixed since the centre of the circle defined by the portion 12b of lever 12 coincides with the point 18, but the retracted position, and therefore the stroke of sleeve 16 is adjustable by sliding a block 19 on link 15, in a groove 20 in portion 12b. A block 25 having a roller 27 is urged against a cam path 26 by a spring 28, and is slidable on the guides 22, 23, to engage the collar 24 of the gripper to move it in the feeding direction. In operation, starting from the position of Fig. 1, sleeve 16 is in its forward position and block 25 is in its rearward position. The cam 9 rotates and projection 17 on sleeve 16 moves to the left, to engage collar 24 on the gripper which slides over the bar stock. At the end of the gripper stroke, the collet is opened by known means, and the block 25 moves to the right due to the shape of cam path 26, and an adjustable screw 29 abuts a pin 30 on sleeve 16, and at the same time block 25 engages collar 24. The members 16, 25 move together along with the gripper and bar stock, until the latter engages a stop (not shown), in front of the spindle, the collet is closed, and block 25 is moved to the left by cam path 26, thus allowing rotation of drum 2 to bring the next spindle into the feeding station.
Patent GB-1341932-A (GB)
Title: Method of forming a fibrous web from a strand of textile length fibres
IPC: D04H1/72
Filed: 1972-06-30
Abstract: 1341932 Mechanical treatment of fibres KENDALL CO 30 June 1972 [2 July 1971] 30806/72 Heading DIF In a method of forming a fibrous web a twist-free strand, e.g. of viscous rayon and 30,000-500,000 denier, of staple fibres is fed through an open ended guide tube, with the strand filling the inlet end of the tube and travelling without alternation through the major part of the length thereof, into a stream of gaseous fluid, e.g. air or steam, concentric with the strand and flowing over the exit end of the tube in the same direction as the strand at a velocity sufficient to draft the strand into an alernated fluid-borne stream of separated fibres entrained by the fluid, and the fibres from the stream are deposited to form the web. The stream may be decelerated by diffusion into a plenum chamber and drawn therefrom in the form of a fibrous web. In the operation of an aspirator 10 having a nozzle 23, Fig. 1, air fed under pressure through inlet 14, is converted to a convergent stream in a section 21 whence it diverges in the section 25 as a stream concentric with guide tube 22 and travelling at supersonic velocity. Air flowing from outlet 26 creates a low pressure zone in a guide tube 16 into one end of which a strand 19 is stuffed by rolls 17. As the strand approaches the exit end of tube 16, fibres are plucked therefrom in an alternating (ratio of more than 5000) stream and travel therebeyond at approximately the velocity of the stream in the divergent end of the nozzle. The fluidborne stream of fibres passes successively through compartments 30, 32, 34 of a plenum chamber, Fig. 3, the partitions 36, 38, of which act as baffles, and a uniform flow at reduced velocity of fibres emerges from the outlet 48 to impinge on the surface of a porous conveyor belt 50 (opposite a vacuum box 52) and form a web 54. If the web is to be laminated with another substrate, a layer of permeable supporting material such as gauze, cellulose tissue or porous non-woven fabric may be interposed between the conveyor belt and the fibrous stream.
Patent GB-915831-A (GB)
Title: Expansible mandrel
Inventor: SOKAL ANDREW LEONARD
IPC: B65H54/54
Filed: 1961-08-26
Abstract: 915,831. Winding yarns; bobbins. JOHNSMANVILLE FIBER GLASS Inc. Aug. 26, 1961, No 30833/61. Classes 120 (2) and 120 (3). A centrifugally-expansible mandrel for a package core 17 comprises a first set of radiallymovable bars 60 extending between a first pair of axially spaced flanges 29, 40 and at least a second set of radially movable bars 65 extending between additional axially spaced flanges 32, 44. The bars 60 are angularly spaced between the bars 65 and overlap the bars 65 at their inner ends. The core 17 may be of laminated paper.
Patent GB-1269506-A (GB)
Title: Improvements in and relating to pump bodies
IPC: F04B53/00
Filed: 1968-06-28
Abstract: 1,269,506. Diaphragm pump. Q.V.F. Ltd. and A. T. W. WILLIAMS. June 17, 1969 [June 28, 1968], No. 31017/68. Heading F1A. A diaphragm pump comprises a unitary glass housing 1 having a pumping cavity 2 open at one side to receive a diaphragm 25 attached to a reciprocating shaft 27, and, on opposite sides of the the cavity 2 an inlet 4 and an outlet 5, a venting passage 29 connecting the upper part of the cavity 2 with the outlet 5 to remove entrapped gas. Non- return ball valves 6, 7 are connected to the inlet 4 and outlet 5 and to pipe-ends 9 with the interposition of P.T.F.E. seals 11, 12. The diaphragm 25 is clamped between an annular rim 23 of the housing 1 and a flanged element 24 and is braced by a mushroom-shaped element 28, the shaft 27 having an extension passing through the diaphragm 25 retaining a spacer 3 against the diaphragm.
Patent GB-663022-A (GB)
Title: Arrangement for determining the contact time of the periodically actuated contacts of switching devices
IPC: H02M1/26
Filed: 1949-12-02
Abstract: 663,022. Current duration meters. AKT.- GES. BROWN, BOVERI, & CIE. Dec. 2, 1949 [Dec. 11, 1948], No. 31040/49. Class 37. [Also in Group XXXV] In an arrangement for determining the time during which periodically-actuated contacts of switching devices are closed as described in the parent Specification, the anode circuit of the discharge tube is switched in and out during the reduced current interval by an auxiliary contact of the mechanical current converter, this contact being actuated in a current-free condition. A mechanical converter is connected to an A.C. network b through a circuitbreaker s and switching choke coils el, e2, e3, and supplies a D.C. network c. Contact bridges al, a2, a3 are raised and lowered periodically in synchronism with the A.C. by a synchronous motor d and eccentrics or cams and plungers. The anode circuit of the discharge tube h, which measures the opening time of the contacts al, a2, a3, is switched in and out by an auxiliary contact a4 on the converter and operates synchronously with the working contact a3, the switching operation occurring when there is no current flowing. In the measuring circuit of the discharge tube h is included a D.C. measuring instrument g and a resistance k. The control grid is negatively biassed from a source i and is positively charged during the reduced current interval from the winding f on the choke coil e3 associated with the working contact a3 that operates in synchronism with the auxiliary contact a4. The average D.C. value measured by the instrument g indicates the time from the beginning of the reduced current interval to the opening of the contact. The discharge tube h may also be associated with one of the other working contacts and be switched in and out in synchronism therewith, the control grid being supplied from the corresponding choke coil. The grid may alternatively be supplied from a choke coil associated with a phase-displaced contact, such as e2. In this case the current through the instrument g is proportional to a constant value dependent on the phasedifference of the contacts plus the time between the beginning of the reduced current interval and the opening instant of the contact.
Patent GB-536885-A (GB)
Title: Manufacture of 1-amino-4-(4-oxy)-phenylaminoanthraquinones
IPC: C09B1/32
Filed: 1939-11-29
Abstract: 536,885. Dyes. SOC. OF CHEMICAL INDUSTRY IN BASLE. Nov. 29,1939 Nos. 31066 and 31067. Convention dates, Nov. 29, 1938 and Nov. 16, 1939. [Classes 2 (iii) and 15 (ii)] Anthraquinone dyes of the general formula where R is hydrogen, alkyl, cycloalkyl, aralkyl or aryl, and R 1  is an aromatic residue of the benzene series containing a hydroxy group in 4-position, are made by condensing a 1-amino- or substituted amino-4-hydroxyanthraquinone with a p-aminophenol in the presence of boric acid, if desired in the form of its anhydride, and a cyclic-hydroxy compound as a diluent, at a temperature between 80 and 200 C. As diluents, cyclohexanol, phenol and cresol are specified. The products are dyes for cellulose acetate rayon and may be converted into acid wool dyes by sulphonation. In examples: (1) 1-amino-4-hydroxyanthraquinone is heated with p-aminophenol in cyclohexanol or crude cresol in presence of boric acid or the anhydride, instead of the 1-amino compound, the 1-methyl-, butyl-, cyclohexyl- or benzyl-amino-4-hydroxyanthraquinones may be used ; and (2) 1-hydroxy-4-phenylaminoanthraquinone is similarly condensed with paminophenol ; 1-phenylamino-4-(4<SP>1</SP>-hydroxy)- phenylaminoanthraquinone is obtained. The 1 - (3<SP>1</SP>-methyl )-phenylamino-4- (4<SP>11</SP>-hydroxy)- phenylamino-, 1-(2-<SP>1</SP>-methoxy)- phenylamino- 4-(4<SP>11</SP>-hydroxy)-phenylamino-, and 1-(4<SP>1</SP>-amino- or 3<SP>1</SP>-hydroxy)-phenvlamino-4- (41-hydroxy)- phenylamino-anthraquinones may be similarly obtained. The Specification as open to inspection under Sect. 91 is not restricted to the use of cyclic hydroxy compounds as diluents, and mentions pyridine and dimethylaniline. It also mentions 1-#-hydroxyethylamino-4-hydroxyanthraquinone as a parent material. This subjectmatter does not appear in the Specification as accepted.
Patent GB-1357919-A (GB)
Title: Switching system
IPC: B60R16/03
Filed: 1971-07-02
Abstract: 1357919 Switching systems TOKAI RIKA DENKI SEISAKUSHO KK 2 July 1971 [2 July 1970 3 July 1970 4 July 1970 31 Aug 1970] 31206/71 Heading H2H [Also in Division G4] A switching system for use in a vehicle lighting arrangement comprises a plurality of fixed contacts LW, RW, LB, HB each connected to an earth point via a passive electronic component, e.g. resistors R 1 -R 4 , movable contacts W, B being connected to an output via a potential divider formed by the selected resistance R 1 -R 4  and a further resistor R 5 . Each of resistors R 1 -R 4  are of a different value and hence a voltage indicative of the switch selection may be fed into a transistor switching circuit (Fig. 8, not shown) to activate one or more of a plurality of relays to supply power to the selected lamps. Alternatively capacitors may be used in co-operation with a U.J.T. oscillator to vary the capacitance on its base to provide a pulse train having a frequency indicative of the selection, or capacitors in the base circuit of a transistor sinusoidal oscillator may be employed. An array of diodes and shorted paths to the earth point may be used, the internal resistance of the components employed as selection criteria.
Patent GB-989536-A (GB)
Title: Semiconductor switching circuits
IPC: H03K19/10
Filed: 1961-08-30
Abstract: 989,536. Semi-conductor switching circuits. INTERNATIONAL BUSINESS MACHINES CORPORATION. Aug. 30, 1961 [Aug. 31, 1960], No. 31227/61. Heading H3T. A switching circuit comprises a negative resistance element having two stable states, a first pulse source arranged to apply a relatively large input pulse to switch the element to an unstable point in the upper positive resistance region, and a second pulse source arranged to supply a relatively small pulse to switch the element from one stable state to the other. An element of a logic circuit, Fig. 1, comprises a tunnel diode E, to one electrode 10, of which are connected an input signal source 12, a source of clock pulses I p , and a source of bias current Is. An output circuit R L , C L  is also connected to the point 10 by a capacitor C c . Assuming the diode to be in state P, Fig. 2, application of a clock pulse I p  switches it to point T producing a large output voltage pulse. If an input pulse is applied from source 12 before the clock pulse, the diode will be switched to state Q, and subsequent application of the clock pulse will cause only a small voltage change. The circuit thus forms a NOT element. The circuit is reset by applying a negative clock pulse. Referring to Fig. 3, three stages as described may be cascaded, each stage having, for example, three inputs 12 and three outputs 18. Clock pulses I A , I B , I c  having the form shown in Fig. 4 are applied to the circuits to switch them consecutively. Fig. 5 (not shown) is a modification of the arrangement of Fig. 3 employing a two-phase clock system.
Patent GB-447661-A (GB)
Title: Improvements in and relating to steam and other vapour generators with forced conveyance of the working medium
IPC: F22B29/02
Filed: 1935-11-12
Abstract: 447,661. Forced-fLow steam boilers. GES. FUR LA MONT - KESSEL UND KRAFTWIRTSCHAFT, 1B, Schadowstrasse, Berlin. Nov. 12, 1935, No. 31262. Convention date, Nov. 16, 1934. [Classes 123 (ii) and 123 (iii)] The evaporative surface of forcedflow boilers is formed by a number of tubes 10 each bent into convolutions having straight and bent tube parts 11 which are attached to and supported by a part of the same tube taken past the crown of their bends. Some of the convolutions are also supported at the opposite end by another part of the tube, the unsupported coils being connected by bridge members 12 or supported by a sliding connection with the straight tube portion. In another arrangement vertical coils are freely suspended from a horizontal tube portion carried past the upper bends only. The bends are preferably welded to the tube portions to enable the tubes to be placed against one another and form a continuous boiler wall or crown. Superheater elements may be similarly constructed.
Patent GB-749984-A (GB)
Title: Improvements relating to electrically-operated pumps
Inventor: MORRIS JOHN NEVILLE
IPC: F02M1/00
Filed: 1954-10-29
Abstract: 749,984. Electromagnetically-actuated diaphragm pumps. S. U. CARBURETTER CO., Ltd. Oct. 29,1954, No. 31264/54. Class 102(1). A diaphragm fuel pump has a diaphragm 7 actuated by the armature 5 of an electromagnet 1, the armature being guided by circumferential sets of guiding members 10, 13 arranged each side of the diaphragm and having sphericallyshaped edges which engage coaxial cylindrical surfaces on the casing 3, armature 5 and retaining disc 8. The delivery stroke is effected by the spring 52 and inlet and delivery valves 24, 25 and filter 22 are provided. The switch comprises a fixed contact 34 on a blade 33 and a movable contact on a lever 43 connected by a spring 47 to a lever 44 carried on trunnions 46 threaded to the spindle 6. Specification 403,209, [Group XXVIII], is referred to.
Patent GB-412106-A (GB)
Title: Shooting game apparatus
IPC: A63F9/02
Filed: 1933-11-10
Abstract: 412,106. Toy targets. PAULSEN, H., 19, Bregner°dgrade, Copenhagen. Nov. 10, 1933, No. 31331. [Class 132 (iii).] Shooting game apparatus comprises metal frame 1 with a hard backing 2 and fitted with a transparent soft material 3, such as celluloid, on which a target 4 is marked and between the target and the backing is mounted a sheet of dark carbon paper 5 with the carbon surface adjacent the celluloid. Between the carbon paper and the celluloid a slidable strip 6 is placed and the two ends of an elastic cord 7 are attached to the sides of the frame 1, the middle of the cord carrying threaded on it, as shown in Fig. 3, a ball, or having attached by a cord 9, preferably of india-rubber, a hard object 8 preferably spherical. Instead of elastic cords, helical springs may be employed. After a hit, the strip 6 is drawn across to remove the mark and give a clear target.
Patent GB-1146256-A (GB)
Title: Storage heater
IPC: G05D23/275
Filed: 1967-07-07
Abstract: 1,146,256. Storage heaters. G. BAUKNECHT ELEKTROTECHNISCHE FABRIKEN G.m.b.H. 7 July, 1967 [8 July, 1966], No. 31417/67. Heading F4U. In an electric storage heater of the type in which the maximum core temperature is determined by an adjustable thermostat which also receives heat from a control heater controlled in accordance with the temperature outside the space to be heated, at least two heating elements are provided and a temperature-sensitive switch arranged to be heated by the control heater is connected in series with one of the elements. Thus, when the outside temperature is above a predetermined minimum and the control heater is energized to reduce the maximum core temperature, the switch opens to de-energize its associated heating element. As shown, three core heating elements 2, 3, 4 are connected in parallel and are energized via a thermostatic switch 16 which receives heat from the core via a metallic heat conducting bridge 17. Elements 3 and 4 are in series with respective bimetal switches 7, 8 which are arranged to receive radiant heat from control heaters 11, 12; heat from the latter is conducted to switch 16 via metallic bridges 18a, 18b, 18. Heaters 11, 12 are respectively energized by the contacts 15b, 15c of a temperature senser 15 mounted on the outside of an exterior wall AM. In operation, both contacts 15b, 15c are closed at outside temperatures greater than 5‹ C., switches 7 and 8 are open and the core is heated to a relatively low final temperature by element 2 alone. At temperatures between - 10‹ and +5‹ C., only contact 15b is closed and the core is heated to an intermediate temperature by elements 2 and 4. Below - 10‹ C., both contacts 15b, 15c are open and the core is heated to a relatively higher temperature by all three elements.
Patent GB-957483-A (GB)
Title: Improvements in and relating to lathe or like tailstocks
IPC: B23Q1/28
Filed: 1961-09-01
Abstract: 957,483. Tailstocks. J. L. JEANNERET. Sept. 1, 1961 [Sept. 8, 1960], No. 31485/61. Heading B3T. A tailstock in which feeding and clamping is effected by a single control lever comprises a sliding centre sleeve 3, Fig. 3, which is connected through a spring coupling 16 with a feed plunger 17. The latter is provided with a transverse slot on the underside engaged by a roller 12 on the end of a crank 11. A vertical spindle, to which the crank is secured, is rotated by a hand lever 8 which is secured to a boss keyed to the lower end of the spindle. A cam groove 29, Fig. 1, is provided around the boss and when the hand-lever reaches the maximum extent of the feed movement a cam-piece thereon operates a lever 31 through a roller 30. A connecting rod 32 transmits this motion to a conventional clamp 36 for the sleeve 3. Specification 806,389 is referred to.
Patent GB-195423-A (GB)
Title: Improvements in and relating to alternating current dynamoelectric machines
IPC: H02K17/42
Filed: 1921-11-24
Abstract: 195,423. Contell, F. Nov. 24, 1921. No- Patent granted (Sealing fee not paid). Exciting; rotary transformers.-An alternating current generator is excited by alternating current the frequency of which is equal to a quarter of the product of the number of poles and the number of revolutions, whereby the frequency of the generated current is equal to that of the exciting current so that the machine may be self-excited. An auxiliary exciter N is provided for the starting period. The exciter N is excited with continuous current, and where it is mounted on the generator shaft it is constructed with half the number of poles of the generator M. When the frequencies of the currents generated by the generator M and exciter N are equal, the exciter is disconnected, and the stator and rotor of the generator M connected to the bus-bars A, B, C. The separate exciter N may be replaced by auxiliary windings on the stator and rotor of the generator M. The machine N may be driven from the generator M through toothed gearing. in which case the machine. N mav not have half the number of poles of the generator M.