baber/WOPTO huggingface dataset:
Patent GB-621017-A (GB)
Title: Improvements in or relating to servo systems and automatic ranging devices
IPC: G05D3/14
Filed: 1944-09-04
Abstract: 621,017. Automatic phase-displacement control systems. SPERRY GYROSCOPE CO., Inc. Sept. 4, 1944, No. 16883. Convention date, Aug. 16, 1943. [Class 38 (iv)] [Also in Group XL (c)] In an automatic control system in which a servomotor 15 having separately-excited stator and armature windings is driven in one or other direction in response to a signal voltage supplied to one of such windings (49, 51), over-riding manual-control means 11, 12 for driving the motor in either direction at a higher speed applies a swamping voltage to the said winding (49, 51) and at the same time increases the energization of the other winding. The invention is described as applied to a radar distance-measuring system in which reflected pulses and reference pulses are automatically kept in phase, the reference pulses being passed through a phase-shifter 21 driven by the motor and the setting of the phase - shifter providing an indication of the distance. Circuit 100 supplies a voltage, representing in direction and amplitude the phase difference between the two sets of pulses, to an amplifier 46 which accordingly controls the field windings 49, 51 to drive the motor in the appropriate direction to reduce this phase difference. In order to drive the motor at a higher speed than can be obtained by the automatic control circuits, e.g. to shift the area of operation rapidly from one end of the range scale to the other, one of the keys 11, 12 is operated to connect comparatively-high negative or positive potential from source 25 to conductor 27. This potential is applied through amplifier 46 to the field windings 49, 51 and also to the grid of a cathode-follower valve 31 which is so fed that its cathode is normally at about earth potential. The change of potential on the grid produces a corresponding change of potential at the cathode and in both cases a non-polarized relay 38 operates to short-circuit a resistance 102 in the armature circuit of the motor. Relay 38 also short-circuits a condenser 55 in an errorintegration network. Limit switches 61, 62 operated by the motor at either end of the range scale stop the motor by connecting earth over rectifiers 65, 66 to amplifier 46. Manual tracking may be effected by closing switch 98 and operating hand-wheel 88 to apply voltages from source 25 through potentiometer 95 to conductor 27.
Patent GB-1377565-A (GB)
Title: Detachable viewfinder
IPC: G03B7/099
Filed: 1972-04-12
Abstract: 1377565 Cameras KONISHIROKU PHOTO INDUSTRY CO Ltd 12 April 1972 [14 April 1971] 16884/72 Heading G2A Interchangeable view-finders 3 for mounting on a camera 8 each comprise a pentaprism 4, photo-electric elements 1, 2 and resistors 5, 6, 7 for providing linearity of output from low to high brightness and/or having valves appropriate to the angle at which the elements 1, 2 receive light from the pentaprism 4. The camera 8 may include an ammeter 10 and an electric shutter (not shown).
Patent GB-1486521-A (GB)
Title: Process of surface finishing especially of sliding surfaces
IPC: C25F3/00
Filed: 1975-05-05
Abstract: 1486521 Surface finishing using chemical attack GOETZEWERKE FRIEDRICH GOETZE AG 5 May 1975 16893/75 Heading C7E The finish of the sliding surface of a machine part is improved by applying to the surface a chemical substance which can attack the surface only at an elevated temperature, and the high spots of the surface are selectively heated to said elevated temperature whereby they are selectively removed. Heating may be achieved by running the surface against a harder, smoother, counter-surface, and/or by passage of an electric current between the surface and a counter-surface; the sliding surface and counter-surface-may be immersed in a melt, solution or dispersion which is independently heated to a temperature below the said elevated temperature. The chemical may be a halide, chalcogenide, chalcogenate, phosphate, phosphite, or phosphide. In Examples, a cast iron grinding wheel is coated with (1) NaCl + K 2 SO 4  or (2) NaF, and used as a counter-surface to smooth a metal rod; frictional heating is used to achieve the elevated temperature.
Patent GB-270520-A (GB)
Title: Improvements in or relating to kilns
IPC: F27B13/02
Filed: 1926-07-06
Abstract: 270,520. Carborundum Co., Ltd., (John son, B. M.). July 6, 1926. Continuous kilns.-In a multiple chamber continuous kiln an elongated combustion chamber 10 having its walls formed of a refractory material of high thermal conductivity is fitted in each compartment, and arrangements are provided for distributing thereto a supply of heated air from a previously fired compartment. As shown, each combustion chamber is divided by a partition 13 into lower and upper flues 11, 12 which are connected together at the end remote from the burner 27 delivering into the lower flue. The upper wall has apertures 15 delivering into the bag wall space of the kiln, while the lower wall has ports 14 communicating with flues 5 extending beneath the floor of the adjacent compartment. These flues communicate directly with the kiln chamber through ports 2 and with the bag wall space through ports 29. Damper-con. trolled outlet ports 24 in the roof of each compartment lead to stack flues b, and the two end chambers of the line can be connected by transverse flues 16, 17 and a longitudinal external flue. In operation, assuming that the compartment E is under fire, air is admitted to the compartment C and passes as shown by the arrows to the cumbustion chamber 10 of the compartment E. Here combustion is effected and the heating gases pass through and below the compartment E to the end flue 16. From this they are transferred to the end flue 17, and pass through and below the compartment A, to be exhausted through the outlet . ports of the compartment B.
Patent GB-145271-A (GB)
Title: Improvements in or relating to drawing-appliances
IPC: B43L13/20
Filed: 1919-07-07
Abstract: 145,271. Poole, E. C. July 7, 1919. Stencils.-For teaching drawing or for amusement a stencil is pierced with one or more designs and is formed to facilitate its being pivoted at one or more points so that by manipulating the appliance a figure with great variation of design may be produced. Fig. 1 shows a stencil pierced with designs a and provided with centre points or pin-holes c. A sheet of paper is placed under the stencil and the designs drawn as desired. By moving the stencil about one of its centres the designs may then be drawn in different positions and multiple designs such as shown in Fig. 2 are thus formed. Notches d may be provided to regulate the degree of movement.
Patent GB-982285-A (GB)
Title: Process for the production of electrophotographic continuous-tone images
IPC: G03G13/045
Filed: 1963-04-30
Abstract: 982,285. Electrophotographic processes. AGFA A.G. April 30, 1963 [May 19, 1962], No. 16989/63. Heading G2H. [Also in Division H1] An electrophotographic process for producing images comprises charging a photo-conductive layer, exposing the charged layer to the original to be reproduced, thus producing a latent electrostatic image, subjecting the layer carrying the image to a second charging, the product of the voltage and duration of which is from 0.1 to 0.01 of that of the first charging and developing the image with a coloured electrically charged aerosol. In one example, a sheet carrying a photo-conductive layer is placed on an earthed metal plate and is charged for 20 seconds by a needle electrode 180 mm. above the centre of the plate with a voltage of 20 Kv between the electrode tip and plate. The photo-conductive layer is then exposed for two seconds in contact with a continuous tone transparent positive. The original is removed and a second charge is applied to the layer for 0. 5 seconds in the dark at the same voltages. The latent image is developed by an aerosol applied to the layer through a grid-shaped developer electrode. The developer liquid may be a saturated solution of Brilliant blau CC in benzyl alcohol. The second charging may be carried out in several separate steps and the image may be developed between these steps. Specifications 834,502, 874,133, 883,783 and 896,610 are referred to.
Patent GB-740404-A (GB)
Title: Electrical multiplication circuit
IPC: H03K21/08
Filed: 1953-06-19
Abstract: 740,404. Pulse circuits. STANDARD TELEPHONES & CABLES, Ltd. June 19, 1953 [June 26, 1952], No. 17035/53. Class 40 (6). [Also in Group XIX] A calculating circuit (see Groups XIX) employs, between stages of a binary counter, discriminating or gating networks each such that a single pulse at a or c produces an output pulse at b while coincident pulses cause an output at d and not b. In Fig. 12, a negative pulse at a or c will cut off one side of a double triode V2, thus increasing the current through the other side and lowering its anode potential so that a negative pulse is passed to b through rectifier r4 ot r5 and capacitor C. However, coincident pulses at a and c will cut off both sides of the triode, thus lowering the potential at the commoned cathodes which are connected to d. The alternative embodiment shown in Fig. 13 responds to positive pulses and comprises " or " and " and " gates comprising rectifiers r9, r10 and r6, r7 respectively. The coincidence output pulse at d is also passed to the grid of a triode V3 which then becomes conductive and prevents b going positive. In a simplified arrangement (Fig. 14, not shown) for the case where a pulse is always present at c when a pulse appears at a, the rectifier gates are omitted.
Patent GB-1504689-A (GB)
Title: Lighting devices
IPC: F21V29/00
Filed: 1975-04-18
Abstract: 1504689 Electric lamps J A ORAM 18 April 1975 [18 April 1974] 17083/74 Heading F4R A sealed lighting device, e.g. for machine tools, comprises an electric lamp 54, e.g. a tungsten-halogen lamp, in a metal housing 1 to which heat is conducted from the lamp by a ceramic ring 38, a transparent cover-plate 35, a rear cover-plate 55 and a cable entry assembly, all sealed to the housing 1. As shown, the lamp 54 is located within the ceramic ring 38 by a circular metal strip insert 46 in thermal and electrical contact with the lamp. The lamp is held in place by a spring 62 so that the filament is at the reflector focus. The housing is mounted for limited angular movement on a spigot support 18 to which the cable is sealed. The lamp is operated by a switch 32 controlled by a rotary knob 28. In an alternative arrangement, the strip metal insert is replaced by a square section ring (110) (Figs. 7, 8, not shown) with a radial hole for receiving a wire end.
Patent GB-1496474-A (GB)
Title: Treating steel in a ladle
IPC: C21C7/076
Filed: 1976-04-27
Abstract: 1496474 Treating steel CENTRE DE RECHERCHES METALLURGIQUES-CENTRUM VOOR RESEARCH IN DE METALLURGIE 27 April 1976 [29 April 1975] 17088/76 Heading C7D In the treatment of molten steel in a ladle, briquettes of addition or treating agents are added, the briquettes consisting of several different layers, one inside the other, each of which reacts with the steel in turn in accordance with a desired sequence. The external layer comprises one or more deoxidizing substances such as ferro manganese, ferro aluminum and/or ferro silicon, the second comprises one or more nitrogen fixing substances, and a third layer or core comprises a desulphurizing substance and/or ferro boron. The briquette may be bonded with a tar binder.
Patent GB-1086678-A (GB)
Title: Stabilisation of pvc
Inventor: GIAIMO MATTHEW PETER DI
IPC: C08K5/00
Filed: 1965-05-27
Abstract: Rigid polyvinyl chloride is stabilized against light by incorporating therein (a) 0.1 to 5.0 weight per cent, based on the polymer of a monoamide R2CON(R1)2, where R1 is hydrogen C1- 18 alkyl or C1- 6 hydroxy- or cyanoalkyl, and R2 is C1- 18 alkyl, alkenyl, carboxyalkyl or carbalkoxyalkyl, di-(C1- 6 alkyl) aminoalkyl or alkanamido alkyl; or a heteropolycarbamylalkane Z[-alkylene CON(R3)2]n, where Z is imino, C1- 18 N-alkylimino, thio or phosphinylidyne, "alkylene" contains 1 to 3 carbon atoms, and R3 is hydrogen, C1- 18 alkyl or C1- 6 hydroxy- or cyanoalkyl and n is 2 or 3; and (b) 0.1 to 3.0 weight per cent of an ultra-violet light absorber selected from substituted 2-hydroxybenzophenones, 2-(2-hydroxyphenyl) benzotriazoles, phenolic esters, triazines, benzothiazoles, benzylidene malonic esters and arylaminoethylenes. Many suitable stabilizers are listed and examples describe the stabilization of rigid polyvinyl chloride containing a conventional heat stabilizer and optionally titanium dioxide and light stabilizers comprising N-(2-dodecyl) acrylamide, N,N-dimethyl oleamide, N,N-bis-(2-cyanoethyl) succinamic acid, stearamide, N,N-dimethyl stearamide, N-(n-dodecyl) linoleamide, N - decyl - 3 - dimethylaminopropionamide, N-octadecyl - 3 - dimethylaminopropionamide, N,N - bis - (2 - hydroxyethyl) lauramide, 3,31-(methylimino) bis - N - dodecyl propionamide or 3,31,311 - phosphinylidyne tris - (propionamide); and 2 - hydroxy - 4 - methoxybenzophenone, 2 - (2 - hydroxy - 5 - methylphenyl) benzotriazole or diethyl p-methoxybenzylidene malonate.
Patent GB-332349-A (GB)
Title: Improvements in magnetic compasses
IPC: G01C17/00
Filed: 1929-06-06
Abstract: 332,349. Nielsen, A. R. June 6, 1929. No Patent granted (Sealing fee not paid). Magnetic compasses.-Electromagnets are used instead of a permanent magnet as the directional element of a compass. The two electromagnets 6, 7 are supported by pivots 5 on a disc 4 carried by a pivot 2 from the compass bowl 1, and are provided with grooved discs 10, 11 connected by a string &c. 12 so that they are constrained to rotate together about their pivot axes. Current from an induction machine &c. is supplied alternately to the magnets 6, 7, the periods of energization of the two magnets being equal. A spring 20 carried by one of the pins 5 co-operates with a stop 21 on the corresponding electromagnet to retain the coils in coaxial relation. The compass card 14 is attached by rods 13 to the disc 4.
Patent GB-255448-A (GB)
Title: Oil gas generator
IPC: C10G9/38
Filed: 1926-07-12
Abstract: 255,448. Misch, O. July 20, 1925, [Convention date]. Producers. - A retort b filled with coke is supplied with oil or tar through a pipe d and is heated externally to gasify the oil or tar, the gases escaping through an outlet e. The retort is heated by gasifying the coke residue in a gas-producer g, the 'gas from which is used partly for external heating and partly for circulation through the charge. The Specification as open to inspection under Sect. 91 (3) (a) comprises also the feature that the retort may be heated externally by burning the coke which is loaded with residues from the cracking of the tar or oil. This subject-matter does not appear in the Specification as accepted.
Patent GB-515887-A (GB)
Title: Improvements in and relating to signalling apparatus and the like
IPC: F16C1/12
Filed: 1938-06-11
Abstract: 515,887. Order telegraphs. M.R.C., Ltd., and PILE, S., June 11, 1938, No. 17426. [Class 118 (ii)] Relates to signalling apparatus of the kind in which a receiver and transmitter are connected by a flexible compound cable adapted to transmit both push and pull. According to the invention, the cable works in a guiding-casing and has spaced projections, such as the turns of a helix, on its outer surface which mesh with toothed wheels connected with the operating handle and the indicating device. Means are provided for adjusting the receiver in relation to the transmitter, and for preventing certain signals from being given by accident. The transmitter may comprise a body casting 10, Fig. 1, having a central depression in which is housed, a gear wheel that can be turned to any desired position by a handle 19 provided with an index pointer 20 working, over a plate 30 on whch indications are displayed. The gear wheel engages helical or other projections on the flexible cable 16 which passes through fairleads 14 forming part of the casting 10. A spring-pressed ball detent 21 is housed in the hub of the handle and co-operates with notches 22 on the surface of the casting in order to define positions in which the handle can be set. In one position on the casting, a spring - pressed pin 35 is provided to prevent the pointer 20 from passing, until a separate action has been performed, in order to guard a special signal. Additional stops such as 36 may be provided. In another construction the detent 21 is replaced by a spring-operated latch which engages notches in the rim of the casting 10, and is released by a rod which passes axially through the handle. The indications on the casing are viewed through a recess in the handle. The receiver comprises a casting 52, Fig. 4, with a recess which houses a gear wheel 55 that engages the projections on the cable 16. An annular gap between the gear wheel and its pivot 54 is filled by a sleeve 56. By withdrawing the sleeve, the gear wheel can be brought out of mesh with,the cable and can be set to any desired angular position, so that the indications given by the receiver can be adjusted to correspond exactly with -those given by the transmitter. The signals are displayed on an annular ring 62, and are viewed through a window 61 on a plate secured to the gear wheel. A'gong 58 is secured to the pivot 54 and is operated by a hammer, pivoted at 65, when the gear wheel is rotated.
Patent GB-1278164-A (GB)
Title: Process for producing benzodiazepine derivatives from phthalimidoacyl-indole derivatives
IPC: C07D403/06
Filed: 1970-04-13
Abstract: 1278164 Ozonides; benzodiazepines SUMITOMO CHEMICAL CO Ltd 13 April 1970 [16 April 1969 29 May 1969] 17436/70 Heading C2C Ozonides and benzodiazepines are prepared by the following route (R 1 =H, halogen, C 1-4  alkyl, NO 2 CF 3 ; R 2 =H, halogen; R 3 , 4 =H, C 1-4  alkyl; X=halogen), optionally followed by salt formation. The ozonide is obtained by treating (II) with ozone, and affords (I) by reaction with a hydrazine derivative. (II) may alternatively be prepared by acylating a compound of the Formula (VII) with (IV) and heating the product of the Formula (V) (VII) may be prepared by reacting the appropriate phenylhydrazine and aldehyde or ketone, and converted to (III) by Fischer cyclization. Alternatively, (III) may be prepared directly from the phenylhydrazine and aldehyde or ketone.
Patent GB-1075886-A (GB)
Title: Improvements relating to mesh welding machines
IPC: B23K11/00
Filed: 1965-04-26
Abstract: 1,075,886. Welding by pressure. BAUSTAHLGEWEBE G.m.b.H. April 26, 1965 [April 29, 1964], No. 17440/65. Heading B3R. A mesh-welding machine has a number of electrodes suspended from hanger units and the units are interconnected by a lazy-tongs arrangement guided by a beam. A beam comprises a front part 1 spaced from a rear part 1<SP>1</SP> and upper and lower slide bars 2, 3 on the front part 1 slidably support units 4 carrying electrodes 5. Longitudinal slots 16 are provided in the front and rear parts of the beam and pins 7 secured to the welding units are slidable in the slots. The pins 7 form the centre pivot points of a lazy tongs arrangement arranged in the space between the beam parts 1, 1<SP>1</SP>, one upper pivot point of which arrangement is connected to a motor-driven worm wheel so that by adjustment of the worm wheel the lateral spacing of the welding units may be varied. A similar arrangement may be provided for the entry end longitudinal wire guides which may be connected to the motor drive. To effect welding the beam is lowered and after welding is raised.
Patent GB-760755-A (GB)
Title: Improvements in or relating to devices for detecting variations in yarn cross-section
Inventor: ABBOTT ALWYNE
IPC: B65H63/06
Filed: 1954-06-15
Abstract: 760,755. Photo-electric apparatus. BRITISH CELANESE, Ltd. June 13, 1955 [June 15, 1954], No. 17545/54. Class 40 (3). [Also in Group XX] An apparatus for detecting or measuring irregularities in the cross-sectional area of a running yarn comprises a light source of even intensity, a lens positioned to form a real image of the source, means for passing the yarn along the optical axis of the lens and through the said image and a photo-electric cell arranged to detect or measure changes in the light flux from the image. As shown, the lens 7 forms an image of the circular aperture 5 in the plate 4 and the yarn is passed along the lens axis and through this image by pulleys 11, 12. Variations in the light flux from the image are detected or measured by focusing the image on to a photo-electric cell 10 by means of a second lens 8. A stop 9 is placed in the plane of the image formed by the second lens 8 and has a diameter slightly smaller than that of the image. The image formed by lens 7 should be only slightly larger than the maximum diameter of the yarn. Stops 5 and 9 may be adjustable iris diaphragms. The current from the photoelectric cell may be passed to a galvanometer or cathode-ray tube, and if desired it may be amplified. A permanent record of the signal may be produced. Instead of using pulleys, the yarn may be passed through holes formed in the centres of the lenses.
Patent GB-805826-A (GB)
Title: Improvements in or relating to photographic light-sensitive materials
Inventor: HOWE LAURENCE CLIFFORD
IPC: G03C1/34
Filed: 1956-06-07
Abstract: 805,826. Photographic light - sensitive materials. ILFORD, Ltd. April 23, 1957 [June 7, 1956], No. 17580/56. Class 98(2) A photographic element comprises a gelatino silver halide emulsion layer and a supercoat colloid layer containing a condensation product of ethylene oxide capable of increasing the effective emulsion speed, either or both of the emulsion layer or supercoat containing an antifogging agent of the formula : where R is an alkyl group. The condensation product may be a direct polymer of ethylene oxide, or a produce obtained by condensing ethylene oxide with a phenol, a glycol, an aliphatic alcohol, a hexitol ring dehydration product, an alphatic acid, amine or amide, or castor oil. The antifoggant may be a 4-hydroxy-6-alkyl-1:3: 3a:7- tetrazaindene. The supercoat is said to have antistatic properties. Specifications 380,431, 380,851 [both in Group VI], 548,019, 592,676, 600,058, 748,745, 748,750 and 805,827 are referred to.
Patent GB-165730-A (GB)
Title: Electric bell
IPC: G10K1/063
Filed: 1921-06-28
Abstract: 165,730. Magerle, E. June 28, 1920, [Convention date]. Electromagnetic interrupters.-In a bell of the solenoid type, the core 3 is a loose fit in the metal sleeve 8 with which it is normally wedged into good contact by the pointed end 13 resting on the ball 14 carried by a contact spring. The clapper 11 strikes the bell 21 through an aperture 19 in the bell casing when the solenoid is energized, and the necessary make-and-break occurs on the ball 14. Two balls 14 on the yoke of an arched spring may be used. The sleeve 8 is in metallic contact with the bracket 5, and is insulated by a washer 9 from this bracket 10.
Patent GB-460624-A (GB)
Title: Improvements in or relating to collapsible cardboard boxes
IPC: A45C7/00
Filed: 1936-06-25
Abstract: 460,624. Boxes. TRIGGS, W. W. (Kunstanstalt Etzold & Kiessling Akt.-Ges.) June 25, 1936, No. 17640. [Class 18] A box simulating a purse or handbag is formed from blanks b, i constituting the body and lid, and a girdle member c. The girdle c is hinged to the rear edge of the bottom of the body b and is provided with flaps f turned inwardly when the box is erected. The flaps f are locked in positions by lateral extensions d<1> of side flaps d of the body. Locking tongues e on the front edge of the blank engage a slot h in the girdle member c, and the lid i is held closed by a flap m which is inserted between two layers forming the bottom of the body. Handles n are provided for carrying the box. In a modification, the handles n are replaced by a single carrying loop arranged on the outside of the bottom.