baber/WOPTO huggingface dataset:
Patent GB-969299-A (GB)
Title: Organoboron polymers
IPC: C08G79/08
Filed: 1963-01-24
Abstract: The invention comprises organoboron polymers having recurring units of formula <FORM:0969299/C3/1> The polymers are obtained either by mixing tetra (dimethylamino) diboron with excess liquid ammonia and heating to at least 40 DEG C. under autogenous pressure, or by bubbling excess anhydrous ammonia through tetra (dimethyl-amino) diboron at 80 DEG  to 150 DEG C. The polymer may be cross-linked by heating at above 500 DEG C. Examples are given.
Patent GB-595672-A (GB)
Title: Electric induction heating of metals
IPC: H05B6/40
Filed: 1944-02-18
Abstract: 595,672. Heating by electromagnetic induction. STANDARD TELEPHONES & CABLES, Ltd. Feb. 18, 1944, No. 3059. Convention date, Feb. 25, 1943. [Class 39 (iii)] In apparatus for heat treating a gear wheel, a high frequency current-carrying conductor having active sections making close magnetic coupling with the working. faces of the gear teeth has a support of insulating material which operates to regulate the penetration of the active sections into the gaps between the teeth. In one example, Figs. 1 and 2, the working faces only of the teeth 10 of a gear wheel 1 are subjected in turn to heat treatment by passing a high frequency current (1 to 5 mc/s., or more) through a conductor 11 supported on an insulating, heat-resisting rack 8, and shaped so that active portions 12 of the conductor, joined by passive sections 13 are, successively positioned between the teeth when the wheel is moved from left to right. The wheel is mounted on a shaft 2 and piloted by bearings in a frame 3 on rails 4 and makes one complete revolution in moving from one end of the rack to the other. It may then drop out of the bearings into a bath for further heat treatment. In a second form, Figs. 3 and 4 (not shown), for large wheels, the conductor has V-shaped portions closely coupled magnetically with the working faces of the teeth of one sector of the wheel. The wheel is rotatably mounted for treatment of successive sectors, and a spring-biassed indexing tooth may be moved to engage any adjacent pair of teeth and hold the wheel against rotation during treatment. The conductor is mounted on an insulating block having a plurality of posts acting as stops for the conductor when moved into magnetic coupling with the gear wheel teeth. The metal may be self-quenched since the heating is confined to the surface layer. The Specification as open to inspection under Sect. 91 comprises also a third form of apparatus for heat treating gear wheels, in which the working faces of all teeth are heated simultaneously by a serpentine-shaped conductor arranged circumferentially around the wheel (see Figs. 5, 6 and 7 (Cancelled), not shown). The conductor has active sections making close magnetic coupling with the working faces of all the teeth, and passive sections by which it is supported on a substantially circular support without obstructing axial movement of the wheel, thus enabling the wheel to be lowered into a quenching bath after heat treatment. The heat treatment time may be of the order of one-fifth of a second. This subject-matter does not appear in the Specification as accepted. The apparatus described in each of the above examples may be used for annealing and other heat treatment of metal work as well as for hardening, the work being allowed to cool at the desired rate by gradually reducing the heating current. Specifications 472,198 and 571,808 are referred to.
Patent GB-567128-A (GB)
Title: An improved thermo-setting resin and manufacture therefrom
IPC: C08G14/06
Filed: 1943-02-25
Abstract: Thermo-setting resins suitable for impregnating boards, sheets, &c. to be laminated, are obtained by incorporating in an intermediate phenol-aldehyde condensate or the initial materials from which such condensate is obtained, a fatty acid amide selected from amides formed from hydrocarbons having from 12-22 carbon atoms in the molecule, preferably stearamide.  An alkaline dispersion of protein may also be incorporated in the resin and also a metallic soap, e.g. aluminium stearate.  93 parts of a cresylic-acid-aldehyde resin prepared as described in Specification 458,364, are mixed with 4 parts by weight of stearamide and 3 parts by weight of aluminium stearate, and the mixture is heated to 85-100 DEG  C. for about 2 hours.  The product is dehydrated and dissolved in alcohol is used to impregnate kraft paper sheets which are superposed and subjected to a pressure of 2000 lbs. per square inch at a temperature of 145 DEG  C. The laminated sheet may be softened several times by heating to about 120 DEG  C. for about a minute, before becoming rigid.
Patent GB-138625-A (GB)
Title: Improvements in or relating to envelope making machines
IPC: B31B19/00
Filed: 1920-02-02
Abstract: 138,625. General Paper Goods Manufacturing Co., (Assignees of Ekvall, C. O.). Nov. 30, 1915, [Convention date]. FIG.5. Envelopes, making.-Relates to machines for making envelopes of the window type wherein an opening in the envelope body is covered by a patch of transparent paper &c. through which the address may be seen. The top blank of a pile 1, Fig. 1, is gummed by three gumming-dies 11, 12, 13, which are carried by a vertically-reciprocated rod 5 and are supplied with gum by rollers 16 carried by a shaft 17 which is reciprocated along rods 19. The dies 11, 13 gum the upper and lower flaps 24, 25, Fig. 9, of the blanks and the die 12 applies gum around the. opening 15 which is to be covered by the transparent patch. The blank is raised by the dies as they ascend, and is detached from them by a fixed stripper-plate 21 having openings through which the dies pass. The gummed blank falls on to a carrier comprising two reciprocating hooked arms 26 by which it is carried beneath a vertically-reciprocating plunger 43 which forms part of the envelope-folding mechanism and also applies the transparent patch. The plunger 43 has a recess 44 to receive the patch and is provided with airducts connected to an exhaust pump so that the patch may be held to the plunger by suction. A pile of patches rests on a table 56, Fig. 5, which is adjustable laterally and can be raised by rackmechanism, and the uppermost patch is lifted by means of a suction device comprising a tubular rod 73 which is oscillated about pivots 72 and is connected to an exhaust pump. The lifted patch is seized by grippers 91, 92, Fig. 7, which are reciprocated along a rod 84 and carry the patch through guides 104 and beneath the plunger 43. The upper gripper 91 is closed by a spring upon the lower fixed gripper 92 and is operated by fixed projections at the ends of its movement. The lower gripper is provided with a leather &c. button 94 carried by a spring 95, so that the patch is gripped at two points and is thereby prevented from becoming skewed. The descent of the plunger 43 forces the blank through an aperture in a creasing plate 30, whereby the flaps are folded upwards, and the air-pump connected to the plunger is reversed so that the air pressure forces the patch against the blank. The further descent of the plunger presses the blank against a folding-bed whereby the patch is caused to adhere. The sealing of the envelope flaps is effected by known means.
Patent GB-893747-A (GB)
Title: Manufacture of organic peroxides
IPC: C08F4/32
Filed: 1959-01-29
Abstract: 893,747. Halo-substituted alkyl peroxides and hydroperoxides. FARBWERKE HOECHST A.G. Jan. 29, 1959 [Jan. 29, 1958], No. 3287/59. Addition to 870,118. Class 2 (3). The invention comprises organic compounds of the formula in which X stands for a halogen atom having an atomic weight of at least 35, the number of carbon atoms contained in R 1 , R 2 , R 3  and R 4  together with the two carbon atoms in the formula does not exceed 30, and not more than 20 carbon atoms are present in any straight chain, and in which R 1 , R 2 , R 3  and R 4  stand for identical or different hydrocarbon groups or heterocyclic groups and at most three of these substituents being hydrogen and in which R 1  and R 3  may be linked to form a hydroaromatic nucleus or connected to an aromatic nucleus to form a condensed hydroaromatic nucleus, R<SP>1</SP> stands for a hydrogen atom or the radical The novel peroxides may be made by reacting an olefine R 1 .C(R 2 )=C.R 3 (R 4 ), where R 1 , R 2 , R 3  and R 4  are as defined above, with hydrogen peroxide in the presence of a hypohalite of the formula BOX in which B stands for a normal or branched saturated alkyl group having at most 20 carbon atoms, a cycloalkyl group, an aromatic group, or a substituted aromatic group and X is as defined above. One mole of olefine may be reacted with one mole of hypohalite and one mole of hydrogen peroxide to form an α-halogeno-alkyl hydroperoxide which then reacts with a further mole of olefine and hypohalite to form an α : α<SP>1</SP>-dihalogeno-dialkyl peroxide. The reaction is preferably effected at a temperature in the range -30‹C. to +50‹C., and in the presence or absence of solvents. Suitable solvents are hydrocarbons, ethers and halogenated hydrocarbons. The α-halogenoalkyl hydroperoxides may be separated via their sodium salts and the neutral peroxides are obtained by fractional distillation. Examples describe the preparation of 4-chloroheptylhydroperoxide-3, 1-chloro-2-methylpentyl hydroperoxide-2, o-chloro-cyclohexyl hydroperoxide and o : o<SP>1</SP>-dichloro-dicyclohexyl peroxide.
Patent GB-1077053-A (GB)
Title: Recording elements for electrostatic printing
IPC: C08L67/02
Filed: 1965-01-26
Abstract: 1,077,053. Electrophotography. INTERCHEMICAL CORPORATION. Jan. 26, 1965 [Feb. 6, 1964], No. 3327/65. Heading H1K. An electrophotographic element comprises a substrate carrying a photoconductive insulating layer comprising a photoconductor and an insulating film comprising a mixture of two partially incompatible resins other than silicone resins, which impart a haze to the element but do not exhibit macroscopic discontinuities. The photoconductor may be an oxide, sulphide, selenide, telluride or iodide of Sb, Al, Bi, Cd, Hg, Pb or Zn, also suitable are Se, PbCrO 4 , As 2 S 3  or Cd 3 As 2 . Dyestuffs may be added to sensitize the compositions. The resins which may be used are acrylic ester polymers, rubber resins, polyesters, polyvinyl acetate, polystyrene vinyl chloride/acetate copolymer, cellulose ethers/ esters or shellac. The preferred elements comprise paper coated with an organic solution of ZnO and a mixture of polyester resins. The preferred resin blends disclosed ethylene terephthalate and ethylene sebacate or adiptate nbutylmethacrylate; styrene and butadiene; and n-butylmethacrylate and isobutylmethacrylate. The method of measuring " haze " in the elements is specified. Paraffin or carnauba wax may also be present in the compositions.
Patent GB-418164-A (GB)
Title: Improvements in or relating to stiffening fabric of covered horse-hair
IPC: D03D41/00
Filed: 1934-02-01
Abstract: 418,164. Fabric containing horsehair. GROSSLAUB, C. R. C., and GROSSLAUB, C. R. H., (trading as GROSSLAUB, C. R.), Hainichen, Saxony, Germany. Feb. 1, 1934, No. 3343. Convention date, April 28, 1933. [Classes 120 (iii) and 142 (iv).] To prevent horsehair from being readily drawn out from a woven fabric, it is combined with knop yarn or flaked knop yarn to form a composite yarn in which it is bent or notched by the knops. Fig. 2 shows knop yarn 2 together with horsehair 1, covered by a yarn 3, which may also be a knop yarn. The composite yarn may be further twisted. If yarns with opposite directions of twist are used, the knops 4, Fig. 1, may be differently coloured.
Patent GB-1496812-A (GB)
Title: Pontoons
IPC: E02B3/06
Filed: 1975-12-19
Abstract: 1496812 Pontoons MACKLEY-ACE Ltd 19 Dec 1975 [27 Jan 1975] 3379/75 Heading B7A A pontoon comprises interconnected wall sections 2a, 2b, 2c having at least one inflatable bag 5 within the pontoon to provide it with buoyancy. The wall sections are interconnected by peripheral projections which as shown are in the form of external flanges 3 with nut and bolt assembly 4.
Patent GB-226394-A (GB)
Title: An improved device for holding safety razor blades for stropping
IPC: B24D15/10
Filed: 1924-02-09
Abstract: 226.394. Eckersley, E. E. Feb. 9, 1924. Razors, safety. A holder for use in stropping perforated safety razor blades comprises two similar parts A, B having interengaging pegs and holes for positioning the blade which Ls held between the parts by a swivel spring catch D hinged at E to the handle of the part B and movable to embrace both handles as shown. The parts A, B cover one edge of the blade and the tops of the parts are hollowed out at C to allow easy manipulation of the blade.
Patent GB-438020-A (GB)
Title: Apparatus for automatically regulating the course or speed of an aircraft
IPC: G05D1/08
Filed: 1934-02-02
Abstract: 438,020. Automatic control of aircraft. SIEMENS - APPARATE UND MASCHINEN-GES., 4, Askanischer Platz, Berlin. Feb. 2, 1934, No. 3539. Convention date, Feb. 3, 1933. [Class 4] [See also Groups XXVI and XXXV] Apparatus for controlling the speed of aircraft comprises a diaphragm 1 loaded by an adjustable spring and responsive to the relative air speed and connected to a control valve 10 of a fluid-actuated servo-motor which includes a differential piston 13. The servo-motor inlet 12 opens to the chamber 15 and the space between the faces f<1>, f<2>. Movement of the control valve causes a variation in the opening of the passage 14, which connects the chamber 15 to exhaust, and consequently, proportional movement of the piston 13. The piston 13 is connected to the piston 20 of a dashpot so that a pressure is built up in the space 15 which is proportional to the velocity of the piston 13, i.e. proportional to the rate of change of the speed. This pressure is caused to act upon a spring loaded piston 22. The movements of the pistons 13, 22 are transmitted to the control valve 24 of a servo-motor 25 operating the elevators in accordance with the change and rate of change of the speed in order to maintain constant the speed of the aircraft. The same servo-motor system may be applied to control the course of an aircraft wherein the angular deviation is employed to correct the rudders. A dashpot arrangement may be used again in the movements of the piston 22 to obtain further derivatives. The Specification as open to inspection under Sect. 91 comprises also that the servomotor system may be employed for maintaining constant any value, e.g. an angular function, velocity, electric current or tension, temperature, &c. An application of the system combined with a centrifugal governor for controlling the speed of a machine is described. Fig. 3 (Cancelled) shows an electrical circuit for obtaining the same result wherein a voltage or current at the terminals 30 is to be maintained constant. The terminals are connected to a transformer 31 connected to the grid circuit of an electronic tube 32, the output of which is connected to a winding 33 of a galvanometer and to a transformer 35. The secondary of transformer 35 is connected to the grid circuit of a second electronic tube the output of which is connected to a second winding 33<1> of the galvanometer. The current in the winding 33 is proportional to the voltage at the terminals 30 and that in the winding 33<1> is proportional to the rate of change of that voltage ; the movement of the galvanometer is proportional to the sum of these. The Specification also comprises the subject-matter of Specification 438,021. This subject-matter does not appear in the Specification as accepted.
Patent GB-1377523-A (GB)
Title: Charge coupled devices
IPC: H01L29/423
Filed: 1972-01-05
Abstract: 1377523 Charge coupled devices RCA CORPORATION 5 Jan 1972 [6 April 1971] 03571/74 Divided out of 1377521 Heading H1K In a charge coupled radiation sensor the radiation reaches the substrate through transparent poly-Si electrodes at least one edge of each of which is overlapped by a further electrode. As shown, Fig. 1, an N type Si substrate 10 is provided with an SiO 2  layer in which are buried poly-Si electrodes 16. Al electrodes 18, 20 are located on the insulating layer so that each Al electrode overlaps the edge of the adjacent poly- Si electrode. An image of a scene is projected on to the surface the light passing through the poly- Si electrodes and aligned parts of the oxide layers to the substrate where it generates electron-hole pairs, the minority carriers (holes) accumulating in potential wells produced by a fixed bias applied to the poly-Si electrodes. The device is read out by applying phase control pulses to the Al electrodes to shift the stored charges sequentially to a drain region 22. In an alternative configuration, Fig. 2 (not shown), a single Al electrode is provided between and overlapping the edges of each adjacent pair of poly-Si electrodes. Each poly-Si electrode is connected to the preceding Al electrode to form in effect a single asymmetrical structure which produces an asymmetrical potential well in the substrate for use with a two phase control supply. The poly-Si electrodes are arranged closer to the substrate than the Al electrodes but a similar effect can be achieved with equal electrode-substrate spacing if the control supplies are applied so that the adjacent Al and poly-Si electrodes making up each phase electrode are offset by a fixed potential to produce the required well asymmetry. In another variation, Fig. 3 (not shown), the Al electrodes are arranged nearer to the substrate than are the poly-Si electrodes.
Patent GB-847900-A (GB)
Title: Apparatus for the detection of combustibles in gas mixtures
Inventor: BLUMER DONALD R
IPC: G01N21/71
Filed: 1959-02-02
Abstract: 847,900. Ultra-violet radiation detection arrangements. MINNEAPOLIS-HONEYWELL REGULATOR CO. Feb. 2, 1959, No. 3627/59. Class 40(3). Apparatus for detecting the presence of combustible gas or dust in a gaseous medium comprises a test chamber 10 incorporating an ignition zone, means for delivering a sample or a continuous flow of the gaseous medium to the ignition zone, an igniter at the ignition zone and a detector, e.g. a geiger tube, sensitive to ultraviolet radiation and disposed so that radiation emitted by the oxidizing combustibles at the ignition zone falls upon it. As shown the gas under test is introduced into the test chamber 10 through a pump 19, flowmeter 20 and a pipe 13 which terminates in an enlarged ignition section 24, Fig. 3, transparent to ultra-violet radiation. The gas is preheated in a zone 28 by an electrical heater coil 30 and is ignited in a zone 29 by an electrical heater comprising a spiral of spirally wound wire 31. The resultant ultra-violet radiation is focused on a parabolic reflector 33 on to the sensitive portion 35a of a geiger tube 35 whose output is applied through an amplifier 36 to an intensity meter and/or alarm relay 37. If it is required to determine the average intensity over a given period of time the amplifier 36 may comprise pulse integrating means. The geiger tube 35 is protected from overheating by a thermallyconductive jacket 35b provided with cooling pins. The exhaust gas escapes through an outlet 12 and flash-back arrestors 21 and 24 are provided in the inlet and outlet.
Patent GB-162419-A (GB)
Title: Improvements in, and relating to, index cards for use in filing cabinets
IPC: B42F17/00
Filed: 1920-02-07
Abstract: 162,419. Rule, J. W. A. Feb. 7, 1920. Boxes; i n d e x cards.-Cards for use in card - index systems are in the form of a triangle or truncated triangle a - - e, Fig. 3, their base angles varying in size so that, when placed one behind t h e other, the index at the apex of each card is visible from the front, and matter f, filed between the cards is only partly covered by the card in front. In a combined card-index and date box, Fig. 5, each card is provided with an index number corresponding to one of the days of the month, and with the same number, visible through a hole g cut in the front wall of the container, near the base.
Patent GB-1106001-A (GB)
Title: Improvements in or relating to heat exchangers
Inventor: HODGKIN ALAN FREDERICK
IPC: F22D1/02
Filed: 1965-01-28
Abstract: 1,106,001. Steam superheaters. BABCOCK & WILCOX Ltd. 28 Jan., 1966 [28 Jan., 1965], No. 3782/65. Heading F4A. An oil-fired marine boiler has parallel gas convection passes 6, 7 defined by vapour generating tubes 4, housing respectively a primary superheater bank 10 and two reheater tube banks 11 in pass 6, and two secondary superheating tube banks 12 and two economizer tube banks 13 in pass 7. The outlets 6a, 7a of the passes 6, 7 respectively are provided with dampers 20, 21 to control the gas flow therethrough, the combined gas flow then passing over further economizer banks 14 and air heating tube banks 15 in a duct 8. The air from the air tube banks 15 passes through air spaces 17 on its way to the burners (not shown). The spaces 17 are connected to gas pass 6 through an opening 22 normally closed by a damper 24. The damper 24 is connected by a link 25 to the dampers 20. When the dampers 20 are fully closed to stop gas flow through pass 6 the damper 24 is opened through link 25 to allow air from air space 17 to enter into gas pass 6 to prevent the tube banks therein from overheating. In place of preheated air, air direct from the atmosphere or cooled waste gases could also be used as tempering gases to prevent overheating of the tubes, which tempering gases could be introduced by a series of jets instead of through a single opening. The means controlling the flow of tempering gases may also be controlled automatically in response to the flow of working fluid through the reheater tubes, to the temperature of the tubes, or to the temperature of gas in the gas pass surrounding the tubes.