baber/WOPTO huggingface dataset:
Patent GB-1415924-A (GB)
Title: Process for the production of 1,3-bis-omega-carboxyalkyl ureas
IPC: C07C275/16
Filed: 1973-03-30
Abstract: 1415924 1,3 - Bis - omega - carboxyalkylureas BADISCHE ANILIN- & SODA-FABRIK AG 30 March 1973 [1 April 1972] 15328/73 Heading C2C  1,3 - Bis - omega - carboxyalkylureas are prepared by reacting an omega-lactam with urea in the presence of an alkali at elevated temperature and pressure, using at least 2 moles of omega-lactam per mole of urea, and recovering free 1,3 - bis - # - carboxyalkylurea from the resulting 1,3 - bis - # - carboxyalkylurea salt by treatment with a mineral acid. The alkali is preferably sodium or potassium hydroxide and the #-lactam preferably has the general formula wherein n is an integer from 3 to 7.
Patent GB-515106-A (GB)
Title: Improvements in or relating to modulator carrier wave transmitters
IPC: H03C1/52
Filed: 1938-05-24
Abstract: 515,106. Modulating systems. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. May 24, 1938, No. 15395. Convention date, June 26, 1937. [Class 40 (v)] Amplitude or combined phase and amplitude modulation of wave energy from a source H.F. with partial or complete suppression of the carrier is obtained by means of a balanced circuit L2, Z1, Z2. The valve V1 which feeds the output circuit L3 has its grid circuit connected between the junction point of impedances Z1 and Z2 and ground. The centre point of inductance L2 is connected to ground through a choke X and a source of anode current B3 for the modulator valves V2, V3, which balance the two sides of circuit L2, Z1, Z2, with respect to ground when no modulation is applied, no voltage then appearing across impedance Z3 in the grid circuit of V1. Modulating potentials from source AF are applied in opposite phase to the grids of valves V2, V3, and unbalance the circuit L2, Z1, Z2, with the result that modulation products with the carrier frequency reduced or suppressed are impressed on the grid of tube V1. If the similar impedances Z1, Z2 are replaced by dissimilar impedances a phase shift of the wave energy supplied by each branch to the grid of V1 with respect to the wave energy from H.F. occurs and phase as well as amplitude modulation is produced.
Patent GB-651912-A (GB)
Title: A new or improved acid-resisting, micro-porous material and method of making the same
IPC: D21J1/00
Filed: 1948-06-08
Abstract: 651,912. Resin-containing board. OLDHAM & SON, Ltd., and BOOTH, F. June 8, 1948, No. 15398. [Class 96] Microporous material, for storage battery separators is made by reducing to a fine pulp in the presence of a wetting agent shredded wood, e.g. balsa, quipo or obiche, digested with 4 per cent caustic soda solution, filtering the resultant aqueous suspension and forming a sheet therefrom, impregnating the sheet with a water-soluble resin capable of being polymerized to form an acid-resisting polymer, e.g. phenolformaldehyde resin, heating to polymerize the resin therein, dipping it in a wetting agent and finally drying. The impregnated sheet may be dried prior to the heating. The weight of wetting agent, e.g. a rubber phenolic resin, added to the pulp may be 0.5 to 5.0 per cent, and the wetting agent into which the sheet is dipped may be a 1 to 5 per cent solution of sulphonated turkey red oil. The sheet may be grooved or given any desired form by cutting but preferably by moulding it during the heating. Specification 645,354 is referred to.
Patent GB-1391260-A (GB)
Title: Display unit
IPC: G09F9/305
Filed: 1971-05-18
Abstract: 1391260 Alpha-numeric displays COUNTING INSTRUMENTS Ltd 5 July 1972 [18 May 1971] 15448/71 Heading G5C [Also in Division G2]  A display device comprises a housing 10 containing a plurality of light sources 20, a diffuser screen 34 and hexagonal light guides 16 extending from each source to the screen. W filament lamps are mounted on a metal sheet 22 and pressed against contacts 28 on a printed circuit board. The housing is of metal, anodized or painted blocks. The assembly is held together by spring clips 36. The guides are hexagonal with curved or V-shaped ends, and may be tapered.
Patent GB-258335-A (GB)
Title: Improvements in or relating to electric hot plates
IPC: H05B3/68
Filed: 1925-06-17
Abstract: 258,335. Belk, W. P. June 17, 1925. Electric hot-plates. -An electric hotplate A is provided with an upstanding flange A<1> into which the vessel C to be heated fits closely. The flange A<1> is of such height as to extend round part of the contents of the vessel. The plate A may also be provided with a downwardly extending flange A<2>, Fig. 4, enclosing the heating-element B and heat-insulating material B<2>. The plate A may be formed with a central projection A<3> fitting into a corresponding necess in the bottom of the vessel.
Patent GB-544821-A (GB)
Title: Improvements relating to the production of pattern effects on textile fabrics
IPC: D06Q1/02
Filed: 1940-10-28
Abstract: 544,821. Artificial silk; treating textiles with liquids ; dyeing processes. HARDACRE, R. W., and IMPERIAL CHEMICAL INDUSTRIES, Ltd. Oct. 28, 1940, No. 15746. [Classes 2 (ii) and 15 (ii)] Textile fabrics composed of a synthetic linear polyamide are crimped by locally treating them, e.g. by printing, with an aqueous medium having a swelling action and containing a dihydric or trihydric phenol, removing water from the locally treated portions, and then heating, e.g. steaming. The printed portions are endowed with increased affinity for direct, azoic, vat, and cellulose acetate. dyes. The polyamides may be derived from monoamino monocarboxylic acids or lactams or from diamines and dicarboxylic acids. Fibres of these polyamides may be.obtained by melt spinning and they may be cold drawn. Resorcinol, catechol, or pyrogallol, may be used as - the swelling agent. The phenolic solution may be printed on the fabric or the fabric may be printed locally with a resist, e.g. starch paste or gum, and then immersed in an aqueous medium containing the phenol. The treated fabric is dried, heated or steamed while in tensionless state, washed, and dried without tension. The aqueous medium may contain a thickener such as gum senegal, or a wetting agent. Dyes may also be included but it is preferred to dye the fabric after treatment with the phenol. In an example, a textile fabric composed of polyhexamethylene adipamide is printed with a paste made by mixing resorcinol, water, gum senegal and the substance sold under the Registered Trade Mark " Perminal KB." The fabric is dried, steamed without tension, washed, and dried without tension. The printed portions shrink and the fabric assumes a crinkled appearance. On dyeing the treated fabric with the direct dye " Chlorazol " Yellow R.S., the printed portions are dyed a deep yellow but the unprinted portions remain practically untinted. Specifications 461,236, 461,237, 474,999, and 495,790 are referred to.
Patent GB-181358-A (GB)
Title: Improvements in and relating to electric ignition devices for internal combustion engines
IPC: F01B13/06
Filed: 1921-11-30
Abstract: 181,358. Skywing Aircraft Corporation, (Assignees of Harper, W.). Dec. 1, 1920, [Convention date]. Valves; valve-gear; regulating.-In a radialcylinder engine the cylinders rotate with a sleeve 5 about a central rotating valve 17 within which a sparking-device is mounted. Each cylinder has an elongated port 7 opening into a similar port 8 in the sleeve 5, the ports 8 registering at intervals with separate admission, exhaust, and ignition ports in the valves. Combustible mixture enters through a passage 21, and the burnt gases escape through an annular chamber 27. For a five-cylinder engine, three sets of ports are provided in the valve, which rotates in the same direction as the cylinders and at fivesixths of their speed. Secured to one end of the valve is a wheel 56 which gears with a pinion 55 mounted on a spindle 53 carrying a second pinion geared to the wheel 51 on the sleeve 5. The spindle 53 is carried by a swinging arm 54, the position of which may be adjusted to vary the angular position of the valve. Specifications 172,308 and 180,681 are referred to.
Patent GB-529344-A (GB)
Title: Improvements in or relating to sheet conveyor mechanism
IPC: B65H29/04
Filed: 1939-05-30
Abstract: 529,344. Delivery apparatus. HARRIS - SEYBOLD - POTTER CO. May 30, 1939, No. 15893. Convention date, June 7, 1938. [Class 100 (i)] In connection with an endless gripper chain conveyer for delivering sheets from printing &c. machines the effect of centrifugal force on the gripper unit is counteracted by means of chainguide shoes 54 arranged at each side of the machine in register with the chains 18 and sprockets 19. The gripper pads 28 are supported by bars 23, and the grippers 29 by shafts 24 mounted in carriers which are received for the sheet-transfer position by gaps in discs 22 supported by the shaft 21 of the sprockets which is driven from the printing-press. The shaft 24 is normally closed under spring action and is rotated by a fixed cam 50, Fig. 5, to open the grippers to receive a sheet from the impression cylinder 10. To prevent radial vibrations of the gripper members during sheet transfer a cam 36, which is adjustable radially of the shaft 21 by screws-and-bolts, engages a roller 47 and holds the middle part of the gripper unit of the conveyer to a circular path, and prevents vibration of the gripper due to bowing of the carrier. The cams 50, 36 are supported by brackets 51, 34 freely mounted on the shaft 21 but each anchored against rotary movement by a cross rod 35. Two sets of cams 36 on opposite sides of the centre of the conveyer may be employed.
Patent GB-165034-A (GB)
IPC: F42B19/06
Filed: 1921-06-21
Abstract: 165,034. Aliquo, F. June 10, 1920, [Convention date]. Torpedoes, locomotive.-Relates to devices adapted to give a torpedo a further chance of hitting if it passes astern of the target and becomes subjected to abnormal oscillations by the wake thereof. According to the invention, the device frees the rudder from the usual gyroscopic control and sets it to steer the torpedo in a circle in a predetermined direction when the torpedo enters or leaves the wake. In the form shown in Fig. 2, the servo-motor C which actuates the rudder is normally controlled by a valve A connected to the gyroscope 0 in the usual way; and a reversing valve D is interposed and controlled by another valve B connected to the same or another gyroscope and so arranged that, when an abnormal oscillation of the torpedo occurs, it admits pressure fluid from the supply c to the right of the valve D, whereupon the connections between the servo-motor C and the valve A are reversed and the rudder is given a fixed set in one direction. Means may be provided to prevent the above action until the torpedo has run a certain distance; for example, a ratchet device G which is actuated by the oscillations of the piston of the servo-motor C and after a certain number of steps deflects a lever E to release the stem of the valve D. The apparatus may be modified by the use of two valves in series; instead of the valve B, to make its action depend on the simultaneous occurrence of abnormal oscillations in two planes. Means may also be provided to predetermine the direction in which the circular course shall be steered.
Patent GB-952741-A (GB)
Title: Improved sheet material
IPC: C08J7/046
Filed: 1960-05-06
Abstract: A coated sheet comprises a polymeric film having a surface layer in which from 20 to 75% by volume of pigment is contained in the cured resinous reaction product of a polyfunctional isocyanate and an amount of a polyester or a polyether having a hydroxyl content of 0,1-8% and an acid number of less than 5, to provide up to 2 hydroxyl groups for each isocyanate group supplied by the isocyanate.  The polyester or polyether may be present in an amount to provide up to 0,5 hydroxyl group for each isocyanate group.  The isocyanate may be at least trifunctional and the polyester or polyether may be primarily bifunctional.  The film may be of polyester which may be formed by reacting a dibasic acid, e.g. terephthalic, isophthalic and sebacic acid, with a glycol, e.g. ethylene glycol, polyethylene trans-1,4-cyclohexane dicarboxylate, or polyvinyl chloride.  Examples of isocyanates, polyesters and polyethers are given.  The coating may contain particulate materials such as titanium dioxide, precipitated calcium carbonate to produce a printable surface.  A natural rubber-resin adhesive composition may be applied to the coated sheet to produce a printable pressure-sensitive adhesive tape, or the coated sheet may be further coated with resins, e.g. acrylic polymers, polychloroprene, butadiene-acrylonitrile copolymer, polyurethane, and vinyl film forming polymers having perfluoro alkyl side chains.
Patent GB-109340-A (GB)
Title: Improvements in Guide Boxes for the Tines of Cultivators.
Inventor: MARTIN WILLIAM EDWARD
IPC: A01B35/22
Filed: 1916-11-11
Abstract: 109,340. Martin, W. E. Nov. 11, 1916. Cultivators.-A tine, of the type which vibrates longitudinally in a guide-box against the action of a spring as well as rocking vertically in the box, has the guide-box provided with two half-bushes b, b<1> provided with lateral flanges b<2> at their upper and lower ends. The edges of these flanges are held in contact by bolts c which also secure together the two castings a, a<1> forming the guide-box. When the bushes are worn, the castings a, a<1>, which are mounted in the machine on a rod and a flat bar, may be drawn apart and the bushes removed and either replaced by fresh bushes or filed away at the edges of their flanges to fit the tine again. Specification 12872/11 is referred to.
Patent GB-698397-A (GB)
Title: Improvements in or relating to superheterodyne receiving circuits
IPC: H04B15/06
Filed: 1952-06-27
Abstract: 698,397. Radio receiving circuits. PHILIPS ELECTRICAL INDUSTRIES, Ltd. June 27, 1952 [July 2, 1951], No. 16240/52. Class 40 (v). In a frequency-changing circuit comprising a valve acting both as mixer and local oscillator, having an inductive back-coupling between the inductance 17 of the tuned local oscillator circuit 17, 18, 19 which is in the circuit of a currentcarrying electrode, and a coil 5 in the circuit of a control grid, the current-carrying electrode is connected to a tap on the inductance 17. The incoming signal is applied to a tap on the coil 5, which forms a balanced bridge circuit in conjunction with the input impedance of the valve and a balancing impedance comprising resistance 13 and condenser 14. The oscillator circuit 17, 18, 19 is connected via an I.F. output circuit 15 to the anode 8 of the valve and is also coupled via condenser 20 to both screens 10, 12. Automatic gain control may be applied to an intermediate control grid 11. The arrangement reduces radiation of local oscillations and also " demixing " effects in the valve. In a modification, Fig. 2 (not shown), the screens 10, 12 are connected to the tap on the inductance 17, but the anode is taken to the top of this coil. These connections may alternatively be reversed.
Patent GB-1057164-A (GB)
Title: Electromagnetic relays
IPC: H01H50/54
Filed: 1964-04-20
Abstract: 1,057,164. Electromagnetic relays. H OBERGFELL, [trading as KIENINGER & OBERGFELL]. April 20, 1964 [April 20, 1963], No. 16243/64. Heading H2B. The electromagnetic assembly of a relay is enclosed between two identical halves of a relay housing which carry the fixed contacts. As shown in Fig. 1, the E- shaped armature 3 carries a two-part contact carrier. The two parts (14) engage one another and are held together by hollow rivets 15. A contact bridge (18) is provided on each side of the armature and is biased to a central position between the two parts by a pair of springs 21 on each rivet. This arrangement permits such bridge to tilt and align with the fixed contacts. The E-shaped yoke 2 has shading rings 10, 11. The armature is biased away from the yoke by a pair of springs (28) mounted on pins (26, 27). Each half (33) of the housing carries four fixed contacts (34) which are retained in slots by being bent or by the provision of barbs. The contact terminal may be in the form of plug-in connectors. A recess (42) in each half (33) of the housing is provided for return spring assembly (26, 27, 28). The perpendicular leg (27) of each pin is retained by a slot (43) in each half of the housing when they are assembled together. The yoke 2 is retained in the housing by the cooperation of slots 12 therein with bridge pieces (41) of each half of the housing. Each half of the housing has a slot through which a plug terminal of the operating winding 5 may project. The armature 3 is biased by the springs 28 against a backstop (46) moulded at one end of a guideway (40) in each half of the housing. The two halves of the housing are provided with interfitting slots and recesses and are held together by spring clips (47). A hole is provided in the housing to allow heat to dissipate. A printed circuit connector panel (52) may be provided. A plurality of contact sets may be provided on each side of the armature.
Patent GB-439226-A (GB)
Title: Improvements in or relating to vehicle head lamps
IPC: F21V11/00
Filed: 1935-06-05
Abstract: 439,226. Vehicle lamps. WOOD, G., 4, Elmfield Road, Davenport, Stockport, Cheshire. June 5, 1935, No. 16291. [Class 75 (iv)] An anti-dazzle device for vehicle lamps, adapted to produce a substantially flattopped beam suitable for use in fog, comprises a number of thin dullfinished rectangular vanes d disposed in front of and /or behind the front glass c and arranged in vertical planes parallel to the longitudinal axis of the lamp and extending across about one third the diameter of the front glass, the spaces between the vanes being left open at the bottom and being closed at the top by a cross plate d<1>. The two outermost vanes and the cross plate may be formed integrally by bending a single sheet of metal. The vanes may be secured in position by means of upper and lower segmental plates e<1>, e<2> fitting between the lamp glass c and the bezel ring f or the lamp casing. The central inner vane, or an additional similar vane g, extends rearwardly to divide the lamp into two chambers, its rear edge following the contour of the reflector and being cut away to pass the electric lamp bulb b. The vane g may be secured in position by means of a clip engaging the lamp holder or by small flanges clamped between the front glass and the lamp casing.
Patent GB-291247-A (GB)
Title: Improvements in or relating to sliding collectors for electric current
IPC: B60L5/22
Filed: 1927-06-20
Abstract: 291,247. Fischer de T¾var¾s, J. June 20, 1927. Controlling arrangements f o r bow collectors. - A flat one-plate bow a pivoted to the frame k and tiltable into the travelling direction has its inverse movement limited by a stop u mounted rigidly on the frame k. The frame k prevents complete forward tilting. In a modification, Fig. 3, the bow a engages a stop u<1> pivoted to the frame under the action of a spring r, the movement of stop u<1> being limited by a stop u<2> fixed on the frame k. A spring stop u<1> may also be arranged in front of the frame.
Patent GB-758285-A (GB)
Title: A hinged cooling wall or shelf
Inventor: HIGHAM DAVID WALTER
IPC: F25D25/02
Filed: 1954-06-03
Abstract: 758,285. Refrigerating. HALL, Ltd., J. & E. June 3, 1955 [June 3, 1954], No. 16411/54. Class 29. [Also in Group XXVIII] A cooling wall or shelf 1 is connected at its ends to a pipe 2 that has hollow hinge pins 7 attached to its ends which pins are located in sockets 9 (see also Group XXVIII) secured to fixed refrigerant headers 10 and 11, the pipe and wall being axially and rotatably movable relative thereto. The pipe 2 is closed intermediate its ends by a plug 6 and the two parts are, interconnected by a conduit 16 that passes to-and-fro inside the wall ; the refrigerant or coolant enters the inlet header 10 and flows through a part of the pipe 2, conduit 16 and the other part of the pipe 2 into the outlet header 11.
Patent GB-293553-A (GB)
Title: Improvements in tabulating mechanism of typewriting machines
IPC: B41J25/18
Filed: 1927-06-21
Abstract: 293,553. Salter & Co., Ltd., G., Bache, E. W., and Grice, J. June 21, 1927. Tabulating-mechanism; tabulating-key actions. -In mechanism of the kind comprising a tabulating-dog which is automatically locked on being projected by the tabulating-key, release of the tabulating-key being thereby permitted, the tabulating-dog consists of a sliding member or pillar. In the mechanism shown in Fig. 3, the tabulating-dog 17 is secured to a pillar 8 which rests on an arm 7 on a rock-shaft operated by the tabulating-key, and is guided by a hole 9 in a plate 10 and slots 11, 16 in plates 12, 15. On depressing the tabulating-key, the pillar is raised and is moved laterally by springs 13, 21 so that the bottom edge of the tabulating-dog catches over the plate 15, and the tabulating-dog remains in the path of the column stops 19 on the carriage whether or not the tabulating-key is released. The tabulating-dog co-operates with a reboundpreventing stop 27 formed on a bell-crank which is pivoted on a bracket 26 and is connected by the spring 21 to an arm 23 secured to the pillar and normally resting on a lug 28 on the bellcrank. On depressing the tabulating-key, the pillar is raised and locked in the above-described manner, the stop 27 rises, and an arm 38 on the pillar disengages the carriage-coupling and thereby releases the carriage. The column stop 19 wipes over the stop 27 and then engages and moves laterally the tabulating-dog, whereupon the carriage is arrested and the stop 27 rises to prevent rebound. The spring 13 thereupon depresses the pillar and the carriage-coupling is restored. The tabulating-dog has a groove for receiving the end of the stop 27. To afford time for co-operation of the tabulating-dog and column stop, descent of the pillar is retarded by means of a weight carried by a bell-crank 42 having a pin 45 engaging a slot 46 in a pivoted arm 47 which has a fork 49 engaging the arm 38. When the pillar rises, the weight drops and the pin 45 enters a recess 50 in the slot so that on descent of the pillar the weight is lifted and retards the pillar. If the tabulating-dog is operated after cooperation with the last column-stop, it is released by means of the margin stop 56, Fig. 9. For this purpose, the stop-lever 52 carries a slide 53 having a lug 58 in the path of the margin stop, and an arm 59 for moving laterally the pillar 8. The slide has pin-and-slot mounting 54 on the stoplever, and is connected to a returning spring 55.
Patent GB-203418-A (GB)
Title: Improvements relating to adjustable box forms or frames for use upon or in connectionwith paper or cardboard box making machinery
IPC: B31B3/44
Filed: 1922-06-14
Abstract: 203,418. Bishop, E. L. June 14, 1922. Apparatus for covering boxes. An adjustable box form particularly suitable for covering or banding comprises four corner elements 1 - - 4 slidable on strips or bars 5 - - 8 disposed in rectangular relationship and directly connecting adjacent elements, the elements being fixed in any adjusted position by two diagonally-disposed and pivotal cross links 9, 10 the limbs of which are slotted to engage studs 11 on the corner elements. The bars 5 - - 8 may be slotted to engage studs 21 on the corner elements and the studs 11, 21 are provided with tightening-means. The cross links are secured at the centre by a nut 15 engaging a pin 17 and one link rigidly supports a carrier member 16 adapted' to be attached to the rotary spindle of the machine. Each corner element may consist of sheet metal vertical side and end walls and a cast metal web 19, the cross-links being mounted on the webs and the strips or bars being of channel section engaging grooves or channels in the webs; the side and end walls of the elements have rolled edges 20. In a modification particularly suitable for banding a lid, the corner elements are closed at the rear to form a surface which supports the top of the lid, a cylindrical block mounted upon the pin 17 supporting the centre of the lid when the form is extended. Each of the links of the crossstructure may be in two parts having a sliding connection, each outer part having a pivotal connection with a corner element.