baber/WOPTO huggingface dataset:
Patent GB-439868-A (GB)
Title: Improvements in or relating to electron discharge tube arrangements
IPC: H03B9/02
Filed: 1934-03-12
Abstract: 439,868. Discharge apparatus; thermionic valve circuits. COSSOR, Ltd., A. C., Highbury Grove, London.-(Assignees of Ardenne, Manfred, Baronvon; 19, Jungfernstieg, Lichterfelde-Ost, Berlin) March 12, 1934, No. 7810. Void [Abridged as open to inspection under Sect. 91 of the Acts, Sept. 12, 1934]. [Classes 39 (i) and 40 (v)] A " virtual cathode " is produced by means of an incandescent cathode, preferably indirectly - heated, a positively-biassed grid and a grid at or about the potential of the cathode. The second grid is made of fine wire with a close mesh, so as to reduce the effect of external fields on the electrons inside that grid. A control or modulating voltage may be applied to the second grid. Very accurate spacing of the electrodes is necessary, and the cathode is operated at a low emission temperature. The oscillation generator shown in Fig. 2, has an indirectly heated cathode K, a grid G<1> at a positive potential, a retarding grid G<2> at or about cathode potential, a grid G<3> at a high positive potential, and an anode A at a negative potential producing a brake field. The grid G<3> and anode A are connected with a Lecher circuit having a variable condenser C, chokes D and a resistance R for damping any oscillations set up in the cathode system. A modulating potential is applied to the grid G2. In a modification a second Lecher system is connected between the grids G<1>, G<2>. In the cathode-ray tube shown in Fig. 4, the cathode K is surrounded by a Wehnelt cylinder C, the grid G<1> is at a positive potential, and the retarding grid G<2> has a small opening which may be closed by a fine wire grid. A tube with a "virtual cathode" may also be used in (a) a modulatable relaxation oscillation generating circuit, Fig. 5 not shown, (b) a receiver with reaction and detection in one stage, Fig. 6, (not shown), (c) a circuit for voltage amplification, with a resistance in the anode circuit, Fig. 7 (not shown) ; the modulation may be applied to a separate control grid as well as to the second grid, Fig. 8 (not shown).
Patent GB-722733-A (GB)
Title: Apparatus for automatically stitching together the quills of a shuttlecock
Inventor: HOLROYD ERIC
IPC: D05B23/00
Filed: 1953-03-23
Abstract: 722,733. Shuttlecocks. DUNLOP RUBBER CO., Ltd. March 23, 1953 [March 27, 1952], No. 7819/52. Class 132 (3). [Also in Group VII] The feathers 59, Fig. 10, after being inserted in the base. 57, are secured together by a ring of chain-stitching which comprises a series of loops as shown, each passing through the preceding one, the ends of the thread being finally knotted together. The stitching operation is performed automatically in the machine shown in Fig. 1, the shuttlecock being held in an intermittently rotated chuck 54, provided with slots 60 for the feathers, and the feathers being supported internally by a member 49 while a needle 37 and a looper rotating inside the member 49 form the stitches in proper relation to the rotation of the chuck 54.
Patent GB-723666-A (GB)
Title: Paper guide for use in typewriters and like office machines
IPC: B41J13/12
Filed: 1952-03-27
Abstract: 723,666. Typewriters &c. ALDERWERKE VORM. H. KLEYER AKT.-GES. March 27, 1952 [March 30, 1951], No. 7931/52. Class 100 (4). Paper guides. - One or more paper guide fingers 6 are placed to engage the papers on a line of contact 10 of a feed roller 2 with the platen 9 to avoid a "spreading" of the papers when several are backwardly fed together. The fingers 6 may be welded directly on the lower side of a paper-guiding plate 1 by means of bent-over portions 7. The fingers pass through apertures in the plate 1 and extend into gaps 8 provided in the feed-rollers 2 for this purpose. If front feed-rollers 3 are provided they are of smaller diameter than the rollers 2 and are made of softer material so that accidental colouring of the papers by the carbon paper is avoided. The feed rollers 2 may be provided with longitudinal grooves 4.
Patent GB-738040-A (GB)
Title: New arsenical compounds and processes for their preparation
IPC: C07F9/74
Filed: 1953-03-23
Abstract: Organo-arsenic compounds of formula <FORM:0738040/IV (b)/1> in which X is arsenoso (AsO) or arsono (AsO3H2) and R is a saturated or unsaturated alkyl group containing not more than 3 carbon atoms are obtained by reacting (a) arsenic trichloride with a tetra-substituted ethylene diamine of formula C6H5N(R)CH2CH2N(R)C6H5 or (b) ethylene dibromide with a compound of formula <FORM:0738040/IV (b)/2> (where X and R have the significance stated above).  The dichlorarsine obtained by reaction (a) is converted by a base (NaOH) to the arsenone, which may be oxidized by H2O2 to form the arsonic acid. The arsenone may be obtained from the arsonic acid by reduction, e.g. with sulphur dioxide and potassium iodide.  The new compounds may be used in amoebicidal compositions (see Group VI).  In an example: N : N1 - dimethyl - N : N1 - diphenyl - ethylene diamine is reacted with arsenic trichloride, and caustic soda and chloroform added when reaction is complete, to precipitate the s-bis-(p-arsenoso-N-methylanilino) ethane.ALSO:Pharmaceutical compositions having amoebicidal properties comprise d -bis-(p-arsenoso- or p-arsono-N-alkylanilino) ethanes of formula <FORM:0738040/VI/1> where X is arsenoso (AsO) or arsono (AsO3H2) and R is a saturated or unsaturated alkyl group containing not more than 3 carbon atoms and a solid material or sterile parenteral liquid carrier.  Such carriers include sterile water, talc, lactose, starch, stearic acid, magnesium stearate or gums.
Patent GB-468942-A (GB)
Title: Improvements in or relating to the duplication of diffraction gratings and like surface patterns
IPC: G02B5/18
Filed: 1936-01-10
Abstract: 468,942. Moulding diffraction and like patterned surfaces. MERTON, T. R. Jan. 10, 1936, No. 8050/37. Divided out of 468,893. [Class 87 (ii)] [Also in Group XVI] Diffraction gratings and like surface patterns are moulded by bringing a mould into contact with a layer of gel in swollen condition on a support, drying the gel so as to harden it while in contact with the mould, and using the hardened gel as a matrix for moulding film, sheet or other material. The gel may be gelatine such as a photo-engraving glue and the mould may be a collodion skin moulded from a master pattern as described in Specification 468,893. Gelatine paper may be used and impressed by a collodion skin. Cellulosic or alginic material or celluloid sheets or thermoplastic synthetic resin may be impressed by the gelatine paper as matrix. The matrix surface 29 may be formed on an endless band or a roller 30 covered with glue containing a dichromate. Collodion skin moulds 25 are squeegeed thereon and removed after drying. The glue may be converted into hard enamel by heating. The patterned cylinder is used for impressing pre-formed film or sheet material such as regenerated cellulose films, or for casting cellulose acetate thereon and removing the film so formed. When celluloid sheets are impressed, they may be softened as by pyroxylin solution applied between the mould and the sheet. The matrix surfaces in hardened gelatine or glue may be used for lining a mould for synthetic resin such as a phenol formaldehyde condensation product.
Patent GB-1152606-A (GB)
Title: Improvements in and relating to an Apparatus for Stunning Pigs to be Slaughtered
IPC: A22B3/06
Filed: 1967-02-21
Abstract: 1,152,606. Stunning pigs. SLAGTERIERNES FORSKNINGSINSTITUT. 21 Feb., 1967 [23 Feb., 1966], No. 8090/67. Heading A1M. Apparatus for stunning pigs to be slaughtered in which the pigs move in single file along a passageway 1 towards a stunning device having one or more electrodes 6, 7 adapted to contact the successively arriving pigs at predetermined points of their surface, is characterized by the feature that the or each electrode is movable between a normal inactive position outside the path of travel of the pig and an active position. The electrodes are carried by hydraulic or pneumatic cylinders 9 actuated under the control of a feeler which extends into the path of the pig. The feeler may be constituted by a sound or light ray which is broken by the pig or be a movable transverse rod which is hit by the forelegs of the pig. The electrodes may be returned to the inactive position under the control of a time device. In a modification the stunning is controlled manually by means of push button switches. At the end of passageway 1 is located a trap unit rotatable about a horizontal axis 5 and comprising three trap chambers defined by downwardly convergent side walls, an element 2 being movable about axis 5 to form a base for each trap chamber in turn.
Patent GB-272999-A (GB)
Title: Improvements in disc hoes
IPC: A01B35/28
Filed: 1926-03-24
Abstract: 272,999. Lewis & Son, Ltd., G., and Lewis, P. L. W. March 24, 1926. Disc-tool implements.-A mounting for a disc hoe comprises a stem a adjustably secured to the frame, a socket piece c rotatably secured on the stem, and an eye-bolt h rotatably secured on a screw g in the socket piece c and carrying the disc p. The socket piece c is mounted on the reduced and screwed end of the stem a and adjustably secured by a washer and nut d. The eye-bolt h is faced to fit against a face on the socket piece c and is adjustably secured by the screw g. On the eye-bolt is mounted a flanged bush m on which fits another flanged bush n riveted to the disc p, the bushes being held in place by a shoulder k- and a washer and nut r.
Patent GB-166637-A (GB)
Title: Improvements in certain kinds of locks, and the like
IPC: E05B65/50
Filed: 1920-03-19
Abstract: 166,637. Bettney, T. March 19, 1920. Hasp locks.-The bolt of a hasp lock is held in the withdrawn position by a resilient retaining- catch made of stamped metal or spring wire. This enables the bolt to be made thin and obviates the necessity for the usual bevel. In the form shown in Fig. 1, the catch A, shown in detailed view in Fig. 7, is riveted to the casing at 8 and has an arm with a projection 9 against which the flat nose of the bolt 3 rests. When the hasp 7 is pressed home, the end of its loop 6 presses back the catch A and remove the projection 9 from the path of the bolt 3, which then springs forward and engages in the loop 6, as shown in Fig. 5. In another form, the catch may be formed of a U-shaped spring wire as shown in Fig. 8, the arms 16 serving to secure it to the casing and the part 11 blocking the bolt 3 until pushed aside by the insertion of the loop 6 of the hasp into the hole 5. Another modification is shown in Figs. 12 and 13, in which the catch is a metal strip A with a bent arm 45. The catch is riveted to the casing at 42 and the arm 45 blocks the bolt 3 until pushed aside by the hasp, allowing the bolt 3 to shoot into the loop 6 of the hasp.
Patent GB-613457-A (GB)
Title: Passenger carrying amusement device for use in water
IPC: A63G3/00
Filed: 1946-03-15
Abstract: 613,457. Water cycles. DEVIS, D. T., and HALLIDAY, I. A. W. March 15, 1946, No. 8192. [Classes 113 (ii) and 114] An aquatic amusement device in the form of a model seaplane or airplane, comprises a fuselage supported by flat-bottom twin-floats. The fuselage has attached thereto a tail fin with or without an air rudder and also lateral spars simulating wings and is provided with passenger seating accommodation. A propeller, positioned between the floats and driven from mechanism on the fuselage, is capable of propelling the device on water and has a water rudder associated with it. In Figs. 7 and 8, the device comprises a fuselage 1 supported by floats 3. The fuselage has a tail section 63 with a rudder 64. The device is propelled by means of an internal-combustion engine 40 though this may be replaced by a pedal drive or may be additional thereto.
Patent GB-634393-A (GB)
Title: Improvements relating to guttering
IPC: E04D13/064
Filed: 1948-03-24
Abstract: 634,393. Gutters. FRYER, L. R., and FRYER, A. A. S. March 24, 1948, No.8199/47 [Class 20 (iv)] A precast concrete gutter 1 is supported on a precast concrete soffit slab 3 keyed by a rear portion 6 into the brickwork of a wall. A drip groove 9 is formed in the tapered projecting portion 7 of the slab. A water discharge connecter 12 with an upper flange 13 bedding on the slab leads to a downpipe 14.
Patent GB-303693-A (GB)
Title: Improvements in spring mattresses, seats and the like
IPC: A47C23/053
Filed: 1928-03-17
Abstract: 303,693. Fraser, H. A., and Crighton, P. F. March 17, 1928. Spring surfaces.- The end coils of upholstery springs have loops or kinks e by which they may engage coupling members in the form of wires d, Fig. 2 or laths i, Fig. 8, in the plane of the spring surface. The parts are held in engagement by threading straight key-wires f through the loops.
Patent GB-496112-A (GB)
Title: Improvements in or relating to current converters
IPC: H02M7/06
Filed: 1937-03-19
Abstract: 496,112. Converting. SIEMENSSCHUCKERTWERKE AKT.-GES. March 19, 1937, No. 8213. Convention date, March 24, 1936. [Class 38 (ii)] In a converter comprising one or more gas or spark discharge valves 22, an iron-cored choking coil 24 which is saturated except at low current values is connected in the anode circuit of each valve so as to prolong the period available for deionization at the end of each conducting period by flattening the current curve in the neighbourhood of the zero current passage. The choking coil, which may be structurally combined with the supply transformer 23, may be magnetically biassed by a D.C. exciting winding 30, and an impedance 26 may be connected across the discharge gap as described in connection with commutator switch converters described in Specification 492,369. Reference has been directed by the Comptroller to Specification 406,651.
Patent GB-1430045-A (GB)
Title: Contraceptive apparatus and method
IPC: A61B19/00
Filed: 1974-02-22
Abstract: 1430045 Oviduct blocks: syringes FRANKLIN INSTITUTE 2 Feb 1974 [26 Feb 1973] 8251/74 Heading A5R A contraception method comprises introducing into the oviducts by means of an injection apparatus 20 a fluid self-curing elastomeric mixture which sets to form oviduct blocks having a modulus of elasticity substantially the same as the oviducts, the blocks being non- surgically removable by gripping and pulling on attached loops 18. The apparatus 20 comprises a tubular member 22 bearing at its distal end 28 a detachable silicone rubber apertured tip 10 for sealing the uterine end of the oviduct and fitted by mating rings 16, 38 to a metal connector 36 and a tube 42 slidable within tubular member 22. Tube 42 is connected to the barrel of a syringe 44 containing the elastomeric mixture, syringe 44 having a plunger 46 operated by a trigger 52 of a control handle 26 via a rack 48 and a pawl 50. The distal end of tubular member 22 is flexible and is urged away from its normal straight configuration for positioning adjacent an oviduct by control wires 30, 32 connected to the end 28 of member 22 and tensioned on drums 34. The elastomeric mixture is introduced into the oviduct via tube 42, connector 36 and the aperture 14 of tip 10 and solidifies and adheres to tip 10, which is then detached from connector 36 by pulling on the tube 42 thus severing by means of an edge 40 of connector 36 the cured from the uncured mixture and leaving tip 10 attached to the oviduct block. A radio-opaque material may be incorporated in the elastomeric mixture to aid placing of the oviduct blocks by fluoroscopic techniques.
Patent GB-1274825-A (GB)
Title: Process for the separation of 20(22)-cardenolides and cardanolides
Inventor: LINDIG CLAUS
IPC: C07J75/00
Filed: 1970-02-20
Abstract: 1,274,825. Cardanolides; cardenolides. DEUTSCHE AKADEMIE DER WISSENSOHAFTEN U BERLIN. 20 Feb., 1970, No. 8286/70. Heading C2U. A mixture comprising a 20(22)-cardenolide and either a cardanolide or a 14,21-epoxycardanolide is separated by treatment with a base in an aqueous organic solvent mixture at 0-50‹ C., the pH of the reaction mixture being maintained at 10-11, and subsequently separating the 20(22)-cardenolide (which is unchanged by this treatment) from the reaction mixture by extraction or by chromatography. The extraction may be effected with an organic solvent preferably after adjustment of the reaction mixture pH to 11-12À5, and conventional working up of the extract yields the pure 20(22)- cardenolide. The cardanolide or 14,21-epoxycardanolide (which is cleaved by the treatment to a γ-hydroxycarboxylic acid) may be isolated from the residual reaction mixture by acidification thereof to a pH of 3-4 (an organic solvent extraction preferably being first performed at pH 8) followed by extraction with an organic solvent and working up of the extract. The aforesaid chromatography is effected by passing the reaction mixture, preferably after adjustment thereof to pH 8, through an anionexchange column and eluting with an aqueous organic solvent. Acidification and extraction of the eluate yields the pure 20(22)-cardenolide. Subsequent elution of the column with an alkali metal salt in aqueous-organic solution (preferably after an intermediate elution with aqueous methanol), acidification and extraction of the eluate and working up of the extract yields the pure cardanolide or 14,21-epoxycardanolide. Specified products are digitoxin, dihydrodigitoxin, 16-epigitoxin and dihydro-16-epigitoxin.
Patent GB-235335-A (GB)
Title: Improvements in mechanism for forwarding and delivering folded printed products
IPC: B65H29/12
Filed: 1924-04-02
Abstract: 235,335. Hoe & Co., Ltd., R., (Hoe & Co., R.). April 2, 1924. Auxiliary belts.-Mechanism for forwarding and delivering printed products from a plurality of folders of a printing machine to a distant point such as the mailing room comprises closely associated superposed sets of tapes, wires &c. moving in the same general direction from each folder to the distant point. The simultaneously forwarded products may be delivered altogether or the products of each folder may be separated at the distant point and a, final delivery provided for each set of products. The first product from the folder 2 and fly 8<1> is deposited on tapes 11 which carry it forward under tapes 12, 13 running round the roller 27, so that from this roller the first product is controlled by the tapes 11 below it and the tapes 12, 13 above it. The second product from folder 1 and fly 8 is deposited on the tapes 12, 13 and is carried forward under tapes 9 running round the roller 14, the second product being controlled from this roller by the tapes 12, 13 below it and the tapes 9 above it. The two superposed tape runs proceed to the mailing room, where they are divided at the roller 16, the tapes 11 proceeding alone to deliver the first product separately, and the tapes 12, 13 and 9 passing to the roller 17 for delivery of the second product by means of delivery tapes 10 running over rollers 17, 21. The lowermost tapes 11 pass round the rollers 22, 23, 15, 16, 24, 25, 26, the portion between the rollers 16 and 24 acting for final delivery of the first product. The outer intermediate tapes 12 travel from under the roller 27, over the rollers 15, 16, 17, and are then carried laterally, as shown in Fig. 5, over pulleys 28, 29, and thence by other pulleys 30 - - 37 to. the roller 27. The inner intermediate tapes 13 are carried under the roller 27, over the rollers 15, 16, 17, and thence over the pulleys 38 - - 47 to the roller 27. The tapes 9 pass over the rollers 14 - - 20.
Patent GB-369386-A (GB)
Title: Machine gun with barrel moved forwardly to open the breech
IPC: F41A7/08
Filed: 1931-03-18
Abstract: 369,386. Machine guns. CESKOSLOVENSKA ZBROJOVKA AKCIOVA SPOLECNOST V. BRNE and STALLER, K., 7, U. Lazaretu, Br³nn, Czecho-Slovakia. March 18, 1931, No. 8372. [Class 92 (ii).] Machine guns of the kind in which the barrel moves forwardly after discharge to open the breech have the barrel coupled with a motoroperated control mechanism which reciprocates the barrel, feeds the cartridges, and operates the firing-pin. By coupling the mechanism with the propeller motor of an aircraft, the firing of the gun between the propeller blades may be synchronized. In the gun shown, the motor drives through a sprocket 25 a crank disc 14 having a crank pin 16 engaging a cam groove 20 in a slider 21 fast with the gun barrel 1. At the end of the forward movement of the barrel when the breech is fully open a projection on the crank disc engages a lever 78 and operates a sprocket 70 which directly engages the links 53 of the cartridge-belt to feed the cartridges across the feed-box 61 in the manner described in Specification 369,331. When the barrel returns it moves over a cartridge in the belt and the slider finally actuates a rod 89 linked to the firing pin 85. When the crank pin 16 engages the centre portion of cam groove 20 the barrel is instantaneously held in the firing position. Means for promoting flow of air round the reciprocating barrel is provided for cooling purposes. The fixed gun casing is provided with a flared and apertured extension near the gun muzzle for silencing the report.
Patent GB-385802-A (GB)
Title: Process for preparing electric insulating hose
IPC: H01B13/00
Filed: 1932-03-21
Abstract: 385,802. Impregnating fabric tubing. KLASING & DETTMER'S ELEKTROISOLIER-GES., Flugplatz, Adlershof, Berlin. March 21, 1932, No. 8387. Convention date, March 24, 1931. [Class 140.] In a process for preparing tubular fabric for electric insulation purposes, the rounded tubular fabric is dipped into a bath of insulating material by means of a wire cage in which it remains until it is dry. Alternatively the tube may be placed on a wire grid and flushed or sprayed with the insulating material and allowed to dry on the grid. The insulating material may consist of artificial resin, woodoil, fresh linseed oil, a siccative, thickened linseed oil, and paraffin.