baber/WOPTO huggingface dataset:
Patent GB-271824-A (GB)
Title: Improvements in or relating to polarimeters
IPC: G01J4/02
Filed: 1927-03-09
Abstract: 271,824. Leitz, E., [Firm of]. May 31, 1926, [Convention date]. Polarizing-apparatus.-Polarimeters, for measuring the specific rotation of optically active substances, employing half-shade devices are fitted with one or more glass plates in combination with the half-shade devices. The inclination of these glass plates can be varied to compensate for the optical rotatory power of the substance under examination, and this inclination enables readings to be effected on a more open scale than if an analyzer or quartz wedge were rotated. The plane of incidence of the glass plate makes an angle of 45‹ or 135‹ with the bisecting line of the half-shade device. A quartz wedge may also be fitted, and is cut parallel to the optical axis. being arranged so that one plane of polarization in the wedge bisects the half-shade angle of the half-shade device.
Patent GB-1279181-A (GB)
Title: Improvements in or relating to friction welding
IPC: B23K20/12
Filed: 1970-02-11
Abstract: 1279181 Welding by pressure CATERPILLAR TRACTOR CO 11 Feb 1970 [13 Feb 1969] 6599/70 Heading B3R  A friction welding machine comprises means for relatively rotating the workpieces and forcing them into contact to generate sufficient heat to raise the temperature at the interface to a suitable bonding temperature the relative rotation then being allowed to subside to bond the pieces together, and the machine includes a motor 24 having a rotor shaft which forms a work spindle for one of the workpieces the shaft carrying workholding means. The machine preferably includes a motor 24 having a hollow through spindle with flywheels 66 and chucks 60, 62 at either end to carry workpieces 26, 28 (or a single workpiece extending through the spindle), the motor being disposed in a centre position between tailstocks 30, 32 which are mounted for sliding movement on guides 20 under the action of hydraulic rams 34, 36. The motor 24 may be fixedly mounted to the machine frame and to the guide 20 or alternatively (Figs. 8, 9, not shown) may be mounted for linear floating movement on the guide 20. In a further modification (Figs. 10-12, not shown) for welding at one end only of the motor spindle the motor is mounted to float on the guides and the thrust created during the welding operation is balanced by a rotary hydrostatic thrust bearing arranged at the other end of the motor spindle and pressurized simultaneously with the application of welding pressure to the workpieces. The drive motor 24 is preferably a low slip induction motor and a variable frequenty voltage may be applied to provide an efficient drive system having a high range of speeds. Work clamping means, Fig. 5, mounted on the tailstocks 30, 32 comprise two pairs of toggle levers 92, 101 and 92, 102, the levers 101, 102 carrying work clamping jaws 108, 110 and guide rollers 134, 136 and being arranged to perform an adjustable arcuate movement determined by arcuate guides 138, 140 on which the guide rollers 134, 136 bear. Actuation of the work clamping levers on each tailstock is effected by an hydraulic piston and cylinder 116, 118, connected by members 112, 114 to the pivot points 104, 106 of the toggle levers. Fixed supports 160, at the ends of the tailstocks locate and support the respective workpieces at the desired height until clamping is effected. The work clamping jaws 108, 110 and supports 160 are replaceable to accommodate various sizes of workpieces.
Patent GB-1024228-A (GB)
Title: Improvements in or relating to imitation fires
Inventor: LAWRENSON EDWARD
IPC: F24C7/00
Filed: 1964-02-18
Abstract: 1,024,228. Bases for imitation fires. CASTLE CASTINGS Inc. Feb. 18, 1965 [Feb. 18, 1964], No. 6624/64. Heading F4W. A base for an imitation fire comprises a cast metal frame 10 formed with legs 11 and a vertical flange 21 for receiving an extension 24 of a lamp holder 23. A support 19 with bearing part 20 is provided for a flicking device (not shown) and frame 18 supports the imitation fuel means also not shown. Holes in the legs 11 have rubber grommets through which electric cables may be passed to supply the illuminating means.
Patent GB-1218231-A (GB)
Title: Electric circuit for pulse control of d.c. motors, especially for electrically driven vehicles
Inventor: IVANOV DIMITAR ALEXANDROV
IPC: H02P7/29
Filed: 1968-02-09
Abstract: 1,218,231. Control of D.C. motors. NAUTCHNO - ISSLEDOVATELSKI I PROEKTNO - KONSTRUKTORSKI INSTITUT PO ELEKTROTECHNITCHESKA PROMISHLENOST. 9 Feb., 1968, No. 6664/68. Heading H2J. [Also in Divisions G2-G3] A control circuit for a D.C. motor energized from a unidirectional supply through a controllable semi-conductor switch comprises a summing and level sensing device which triggers the switch and which receives three signals respectively representative of the instantaneous motor current, the mean value of the motor voltage over an initial range thereof, and the desired speed setting, the latter signal being a maximum at the zero setting and decreasing as the setting is changed. The figure shows only the control-circuit which comprises a flip-flop circuit 7 controlling the switch, a summing device 6 for receiving the signals, a D.C. amplifier 3 receiving the current signal I from a resistance in the motor supply circuit, an RC circuit 2 for receiving the motor voltage U and a reference element 1 controlled by an adjustable member such as an accelerator pedal and delivering a signal which is a maximum at the initial, zero speed setting of the element and is zero at the maximum setting. The signal from circuit 2 is passed to a summing device 4 fed with a negative voltage for subtraction from the signal. The resultant signal is fed to a clamping circuit 5 which limits the signal fed to the device 6 to a value dependent on the signal from the element 1, on the gain of the amplifier 3 and on the value of the abovementioned negative voltage. As a result the motor voltage and current signals provide speed stabilization at low motor speeds, but at higher speeds and for a particular setting of the element 1 the voltage signal is limited to provide constant current operation of the motor until the natural speedtorque characteristic is reached. A typical cycle of operation of the control circuit is discussed with reference to the speed-torque characteristic and the various settings of the element 1, Fig. 2 (not shown). The arrangement also keeps the ripple amplitude of the motor current substantially constant.
Patent GB-1280132-A (GB)
Title: Process for the production of an aralkylamino alcohol
Inventor: FELDER ERNST
IPC: A61K31/135
Filed: 1971-03-12
Abstract: 1280132 L - 2 - [(α - phenyl - ethyl) - amino]- butan-1-ol BRACCO INDUSTRIA CHIMICA SpA 12 March 1971 6729/71 Heading C2C L - 2 - [(α - Phenyl - ethyl) - amino] - butan- 1-ol is obtained by a process which includes reacting 1-hydroxy-2.butanone with an optically active α-phenylethylamine under reducing conditions and resolving the resulting mixture of the two geometrically isomeric forms of 2- [(α - phenylethyl) - amino] - butan - 1 - ol, preferably by fractional cyrstallization of the acid addition salts of the isomers. Examples are given which illustrate the process.
Patent GB-311368-A (GB)
Title: Process for the utilisation of cellulose ester waste
IPC: D01F2/28
Filed: 1929-03-02
Abstract: 311,368. Spelling, R., (Assignee of Eggert, H.). May 10, 1928, [Convention date]. Cellulose ester solutions, and processes for making filaments therefrom.-Waste films, film cuttings, and the like are freed from their chemical coatings and are then dissolved in any suitable known solvent. The solutions are used in known manner for the production of artificial silk, staple fibre, &c. If the viscosity of the solutions is too low for spinning, the necessary quantity of new spinning solution prepared in. known manner is added to bring them to the required viscosity. Reference has been. directed by the Comptroller to Specifications 182,488 and 245,078.
Patent GB-440301-A (GB)
Title: Improvements in and relating to electrical convection current air heaters
IPC: F24H3/00
Filed: 1935-03-06
Abstract: 440,301. Electric radiators. HILL, L. G., 6, Gloucester Terrace, Thorpe Bay, and HYDRELEX ELECTRICAL UTILITIES, Ltd., Works Road, Garratt Lane, Wands. worth, London. March 6, 1935, No. 7003. [Class 39 (iii)] A resistance wire operating at a low temperature is supported between and spaced from insulating panels 1, 17, furnished at the edges with strips 12, 13 of insulating material to prevent accidental contact with the wire, the parts being proportioned so that air passing between the panels is raised in temperature by 150-200‹ F. The wire is supported by hooks on spaced insulating strips 2 secured to the rear panel by screws 3 engaging spacers 4, secured to the strips 2. Spacers 10 on rear panel space the indicator from the wall on which it is mounted. Porous material for receiving a scent or disinfectant may be arranged between the panels above the heating element. Metal clips grip the flexible supply lead where it passes from the apparatus. A switch 9 is mounted on the front panel.
Patent GB-622345-A (GB)
Title: Improvements in and relating to motive equipments comprising an engine-driven electric generator and an electric motor or motors
IPC: H02P9/04
Filed: 1947-03-13
Abstract: 622,345. Transmitting mechanical power; automatic control of speed. RAMSDEN, H. K., and METROPOLITAN-VICKERS ELECTRICAL CO., Ltd. March 13, 1947, No. 7023. [Class 38 (iv)] To reduce hunting of the automatic enginespeed control system of a diesel-electric locomotive drive or the like, of the kind wherein a member moved in accordance with deviations of engine-speed from a prescribed value controls means for automatically varying the excitation of the engine-driven generator in a sense to correct the deviation, the means is arranged to terminate a control operation initiated by movement of the member before the member returns to the position at which it initiated the operation. In returning to the datum position the member may initiate a change of excitation in a sense opposite to that effected by the initial movement of the member. In the system shown in Fig. 1 an engine-driven governor 1a displaces a link 14 in accordance with changes of speed, thereby controlling a fuel pump 1b and the position of a contact 12 which is pivoted at 13 and co-operates with contacts 15, 16 carried by spring-loaded pistons 17, 18 working in dashpots 19, 20. The dashpots are such as to allow free inward movement of the pistons whilst slowing down their outward return movement to a speed determined by adjustable byepass valves 23, 24. The contacts 15, 16, respectively, control the operating coils OC10, OC11 of reversing contactors 10a, 10b, 11a, 11b in the armature circuit of an electric servomotor 8, 9 for operating a rheostat 7 in the field circuit 3 of the enginedriven generator. Upon deviation of enginespeed from the prescribed datum value, governor 1a moves contact 12 against one or other of contacts 15, 16 (say 16), displacing the associated piston and starting motor 8, 9 in a direction to correct the deviation. As correction proceeds, contact 12 moves away from contact 16, the return of which is delayed by its dashpot, thereby stopping the motor and preventing excessive over-correction. In the modified arrangement of Figs. 2 and 3, the contacts 15, 16 are carried by a fork 30, 31 pivoted at 32 and having a tail 33 extending between members 34, 35 of a piston and dashpot arrangement similar to that of Fig. 1. When contact 12 is displaced by the governor, it engages, say, contact 15, and the fork is snapped into the position shown in Fig. 3 by a dead-centre spring 38 so that contact 12 in returning to its datum position, as correction proceeds, first engages contact 16 to apply correction in the opposite sense to the first and to an extent largely determined by the setting of the byepass valves of the dashpots. In both arrangements, displacement of the pivot 13 of contact 12 in a direction parallel to link 14 (as indicated by 131 and 13<SP>11</SP> in Fig. 1), permits the datum speed of the engine to be varied.
Patent GB-977910-A (GB)
Title: Improvements in gas hotplates
Inventor: RYDER SAMUEL EDWARD ALLAN
IPC: F24C3/08
Filed: 1962-02-23
Abstract: 977,910. Gas cooking stove hotplates. STOVES Ltd. Oct. 16, 1962 [Feb. 23 1962], No. 7045/62. Heading F4W. A gas hotplate comprising a pan support 1 and at least one gas burner having flame ports 5 at the junction between a burner body 3 and a burner cap 4 is such that the crown of the cap of the burner 6 is at approximately the same level as the upper pan supporting surfaces 2.
Patent GB-911269-A (GB)
Title: Method and means for the cleansing of spray tubes
IPC: D21F1/32
Filed: 1961-02-27
Abstract: 911,269. Spray-producers. SKARDOL, K. A. Feb. 27, 1961 [March 1, 1960], No. 7052/61. Class 69 (3). The outlet holes 2 of a spray tube 1, supplied with liquid through an inlet 4, are cleared of clogging fibres &c., which are present in the liquid, by means of valves 9 and 10 at the liquid inlet and outlet ends of the tube, operated so that the opening 7 is closed and the opening 8 is opened substantially simultaneously whereby a suction is created in the tube which drains air through the holes. The valves are mounted on a rod 11 longitudinally displaceable by an handle 12 pivoted at 14; in the spraying position a cam member 13 engages abutments 34 to hold the valves in the positions shown. When the handle is swung from the position shown, the valves are moved by liquid pressure to close the opening 7 and open the opening 8 whereby the clogging fibres are entrained in the liquid and flow from an outlet 6. Alternatively, in order to produce the suction, the outlet 6 may be provided with a pump &c. Instead of interconnecting the valves mechanically they may be provided with separate actuating devices controlled in common by a valve or switch &c.
Patent GB-1478860-A (GB)
Title: Solid source capable of liberating p2o5 vapour
IPC: H01L21/22
Filed: 1974-06-08
Abstract: 1478860 Aluminium phosphate wafer J D McCALL (Owens Illinois Inc) 8 June 1974 07095/77 Divided out of 1478858 Heading C1A A source of phosphorus dopant for in-diffusing to form a PN junction in a P-type silicon semi-conductor crystal consists of a wafer of aluminium metaphosphate other than a sintered porous wafer. By heating in the range 700‹ to 1200‹ C. phosphorus pentoxide vapour is produced which forms a glassy deposit on the silicon substrate. The wafer may be in the form of a glass prepared by melting 70 to 81% P 2 O 5  and 19 to 30% Al 2 O 3  by weight and cooling, excess P 2 O 5  compensating for losses by evaporation. The glass may be annealed at 650‹ to 750‹ C., and may be at least partially crystallized by heating between the annealing temperature and the fibre softening point. Up to 5% of other substances may be present, e.g. ZrO 2  or TiO 2  as nucleating agents. The wafer may alternatively comprise aluminium metaphosphate prepared from aluminium organic substances.
Patent GB-620139-A (GB)
Title: Improvements relating to laminating paper
IPC: D21H17/50
Filed: 1946-03-07
Abstract: 620,139. Compound paper. SPOLEK PRO CHEMICOU A HUTNI VYROBU, NARODNI PODNIK. March 7, 1946, No. 7173. Convention date, March 22, 1944. [Classes 96 and 140] A laminated paper for wrapping or for making drinking-vessels consists of three layers, each of a different kind of paper, the middle layer being of a thin waterproof and greaseproof paper and the outer layers being neither waterproof not greaseproof, the three layers being connected by means of a synthetic resin adhesive such as urea-aldehyde resin. The middle layer, which may also be airtight, may be paper impregnated with urea-aldehyde resin, or parchment paper. The inner layer may be of thin, rough and coarse paper, the outer layer of smooth absorbent paper capable of being printed.
Patent GB-897197-A (GB)
Title: Process for the production of cyanine dyestuffs
IPC: C09B23/06
Filed: 1959-03-02
Abstract: Cyanine dyes are prepared by reacting a 2-cyanmethylene-indoline of the formula <FORM:0897197/IV (c)/1> wherein n is 0 or 1, A is an ortho phenylene or ortho naphthalene residue, R is H or CN, X is a dialkylated carbon atom and Y is N-alkyl, with a 1; 3; 3-trialkyl-2-methylene-indoline-o -aldehyde, an indole-3-aldehyde or a p-di-substituted aminobenzaldehyde in the presence of an acidic condensing agent.  Examples are given of the preparation of trimethine dyes by reacting a 1-methyl- or 1-ethyl-3; 3-dimethyl-2-cyanmethylene-indoline which may have methyl, methoxy, chloro, carbomethoxy or phenyl substituents in the benzene ring, with a 1; 3; 3-trimethyl-2-methylene-indoline-o -aldehyde which may have methyl, methoxy, or chloro substituents in the benzene ring, or with 1-ethyl-3; 3-dimethyl-5-ethoxy-2-methylene-indoline-10-aldehyde. Other 2-methylene-indoline-w-aldehyde starting materials are referred to including ones having in the 5-position a nitro, carboxylic amido or ester, cyano, acylamino, alkylsulphonylamino, arylsulphonylamino or sulphonamido substituent.  In Example 11, an a -g -dicyano-pentamethine dye is prepared from 1; 3; 3-trimethyl-2-(a -g -dicyano-propenylidene)-indoline and 1; 3; 3-trimethyl-2-methylene-indoline-o -aldehyde.  In Example 12, a dimethine dye is prepared from 1; 3; 3-trimethyl-2-cyanmethylene - indoline and 1 - methyl - 2 - phenyl - indole-3-aldehyde.  In Example 13, a styryl dye is prepared from 1; 3; 3-trimethyl-2-cyanmethylene - indoline and p - dimethylamino - benzaldehyde; reference is made to using p-(N-methyl - N - phenylamino) - or p - (N - methyl - N - (p1 - methoxyphenyl) - amino) benzaldehydes.  The reactions may be carried out in benzene, ligroin, cyclohexane, chloroform, chlorobenzene, acetone or acetic acid as solvent, and with phosphorus oxychloride, thionyl chloride, acetyl chloride, acetic anhydride, sulphuric acid or phosphoric acid as acidic condensing agent.  Specifications 823,520 and 897,195 are referred to.
Patent GB-374849-A (GB)
Title: Improvements in colour photography
IPC: G03C7/26
Filed: 1931-03-09
Abstract: 374,849. Colour photography. TECHNICOLOR MOTION PICTURE CORPORATION and TROLAND, L. T., 110, Brookline Avenue, Boston, U.S.A. March 9, 1931, No. 7241. [Class 98 (ii).] Separate prints, e.g. adapted to be utilized as matrices for imbibition printing, are produced from two colour aspect records contained at different depths of a single emulsion or in different coatings on the same side of the support by staining the records, printing one record with light transmitted by the other record and printing the second record by light transmitted by the first record. The colours are not necessarily related to the recorded colours. Thus, for two-colour work the colour aspect records are produced in a negative film comprising a support F carrying an emulsion E having the outer layer W sensitized to warmer colours and dyed orange throughout. The emulsion is exposed through the support and, after development, the negative is fixed in plain hypo, and washed until free from dye. Both images are then converted into yellow or minusblue and the warmer image is then converted to magenta or minus-green and separate positive prints are obtained by printing with blue and green light. For example, the images are converted to Metanil yellow and the surface image is then converted to magenta by allowing a small amount of acid to diffuse into the film. To facilitate separate treatment of the images, the sensitive layers of the negative are preferably separated by a free gelatine layer. Alternative methods of colouring the images comprise (1) colouring the outer image magenta by limited diffusion and then converting the other image to yellow by chemical or dye toning, (2) converting both images to unexposed silver salt, exposing and developing one image without the other and utilizing the unexposed image as a mordanting base for a suitable dye, followed by toning of the exposed image. The application to three-colour work is also described. The three-colour aspects are recorded in a bipack of which the front member carries an emulsion adapted to record two components from which separate prints are obtained as described above. The rear member carries a single emulsion adapted to record the third component from which a print is obtained in the ordinary way.
Patent GB-683748-A (GB)
Title: Improvements in and relating to method of making and assembling headliners for vehicle bodies
IPC: B60R13/02
Filed: 1951-03-28
Abstract: 683,748. Panels. BRIGGS MANUFACTURING CO. March 28, 1951 [April 6, 1950], No. 7244/51. Class 20(iv) A flexible panel 10 preformed to fit along the underside of a vehicle roof and supported from the edges is sufficiently stiff to be self-sustaining and is arched both transversely and longitudinally. It may comprise a decorative trim layer 12 of paper or fabric backed by a tough layer 16 as of phenolic resin, or cellulose, vinyl or polyester-type thermoplastic to which a thick insulating layer 18 of cotton, paper matting &c. may be cemented. The panel is supported by one or more retainers 36 screwed to the flanged interior extension 22a of a drip moulding 22, the retainers having a downward flange 36a abutting a compressible sealing member 32 and having upwardly extending barbs 36b on which an edge strip of the trim layer is impaled. A latex &c. sealing layer may be provided between layers 12, 16 to prevent staining. A modified support comprises bowed wire spring arms partly embedded in the panel and engaging in slots in flange 36a; in another the panel edge is received in a channel at the bottom of flange 36a.
Patent GB-350438-A (GB)
Title: Improvements in or relating to motor fuels
IPC: C10L1/223
Filed: 1930-03-05
Abstract: Motor spirit.--Cracked hydrocarbons for use as motor spirit are mixed with a small amount of a substituted amino-phenol, to prevent the formation of gum therein.  In examples, the hydrocarbons obtained by cracking oil, preferably in the vapour phase, or by destructively distilling coal, peat or similar bituminous materials, are mixed with 0,05 per cent or less of benzyl-amino-phenol or the corresponding methyl, dimethyl, isopropyl, or butyl derivatives, or with dihydroxy-diphenylamine. Lead tetraethyl or other anti-knocking ingredient may be added. The cracked hydrocarbons may be submitted to treatment with 60 per cent sulphuric acid before addition of antioxidant.  The antiknocking value of unsaturated hydrocarbons measured in terms of amounts of lead tetraethyl is described. Testing and estimating.--The tendency of gasoline, especially cracked hydrocarbon oils, to form gum is estimated by agitating at about 100 DEG  C. 100 c.c. of the gasoline, contained in a litre flask, under a substantially constant pressure of 2\ba1/2\be atmospheres of oxygen-containing gas.  The oxygen absorbed is measured at frequent intervals.  Absorption is slow for an initial or induction period and thereafter rises rapidly.  The time required for the absorption to rise to 1 c.c. per minute is a measure of potential gum formation. For example, a vapour phase cracked distillate had an induction period of 35 to 70 minutes. After treatment with 60 per cent sulphuric acid, the period increased to 80 to 90 minutes.  The unsaturated hydrocarbon content was estimated by treating with 90 per cent sulphuric acid, separating and distilling the oil layer to yield a distillate of the same end point as the original oil.  The loss in p  volume, representing unsaturated hydrocarbons, was 50 to 70 per cent.  The addition of 0,001 per cent of p-aminophenol, as antioxidant, to gasoline after light acid treatment, increased the induction period to 435 minutes.