baber/WOPTO huggingface dataset:
Patent GB-263939-A (GB)
Title: Improvements in or relating to the manufacture of cellulose derivatives
IPC: C08B3/00
Filed: 1925-10-06
Abstract: 263,939. Dreyfus, H. Oct. 6, 1925. Patent abandoned on opposition. Cellulose acetates and other carboxylates.-For the manufacture of cellulose esters, particularly cellulose acetates, from cellulose pretreated with organic carboxylic acids according to the processes described in Specifications 207,562 and 263,938, while employing acetic acid as the solvent in the acetylation &c. mixture in proportion not greater than six times the weight of the cellulose taken, the proportion of the condensing agent, such as sulphuric acid, is reduced to less than 5 per cent of the weight of the cellulose, for example, to 0.5-3 per cent, without deleterious effect on the acetylation process. The pretreatment of the materials may comprise boiling with concentrated acetic acid, or treatment with formic acid in the cold, or passage of acetic or formic acid vapour through the materials. The starting material may be mercerized or unmercerized cotton or wood pulp, preferably such as has been treated according to the process of Specification 249,173. By the addition of non-solvent diluents such as benzene to the reaction mixture, acetylation &c. may be effected in suspension. When, however, the acetylation is carried out in solution, as is usual, small quantities of substances having a high solvent power for the cellulose acetate &c. may be added, in order to prevent precipitation of the acetate and consequent stiffening of the reaction mixture; suitable solvents are ethvlidene diacetate and lactic acid or its acetyl derivatives, the first mentioned being introduced either as such or by adding acetaldehyde to the reaction mixture, and being finally recovered as acetaldehyde and acetic acid. The cellulose acetates or other esters obtained may be subjected to any suitable secondary treatment for the purpose of varying their solubility characteristics, for instance according to the processes described in Specification 20977/11. 20852/12 and 207,562, the products to be treated being either first isolated or the reaction being allowed to proceed in the original esterification solutions or mixtures with or without the addition of water or other agents, such as lactic acid, capable of destroying any remaining anhydride, and after partly or completely neutralizing the condensing agent. Specifications 6463/15, 14101/15, 100,009, and 101,555 also are referred to.
Patent GB-783375-A (GB)
Title: Improved apparatus for the application of adhesive tape
IPC: B65B51/06
Filed: 1955-08-30
Abstract: 783,375. Attaching adhesive tape. MINNESOTA MINING & MANUFACTURING CO. Aug. 30, 1955 [Aug. 30, 1954], No. 24926/55. Class 73 Two lengths 25, 26, of adhesive tape are applied as shown to the faces adjoining the edges 40, 41, of a carton by apparatus incorporating two reciprocating tape applying heads 16, 17, which apply the tape to the surface 27, and two movable tape severing and buffing means 30, 31, which reciprocate to sever and apply the tape to the faces 35, 36 after the heads 16, 17, have moved through a cycle of reciprocation. In the construction shown, the cartons 11, 12, 13, move along a track 10 in the direction 15, as seen in plan in Fig. 1, and the heads 16, 17, move on horizontal tracks 20, 21. Each head carries a supply roll 47 of tape 10 on a drum 47, see Fig. 6, and a spring urged applying arm 52. When the head moves to the right, the arm 52 is rocked slightly in a clockwise direction, by a cam, Fig. 5 (not shown), and is held thus by a spring-controlled detent 62. Towards the end of the stroke to the right the detent is rocked by meeting a fixed stop and thus releases the arm 52 which moves upwards to apply the end 97 of the tape to the face 27 of the carton. After a slight further movement to the right the head moves to the left and the arm 52 presses the tape to the face 27. When the head has returned to the initial position shown, the device 31 moves upwards along its track 33, a knife 87 thereon serving to sever the tape and a roller 90 thereon serving to press the loose end of the tape against the face 36 of the carton. A roller 90 or a spring-controlled arm pivoted to the arm 52 provides a resistance to the upward thrust of the knife during the severing operation.
Patent GB-599988-A (GB)
Title: Improvements in or relating to submersible-pump fuel systems
IPC: F02M37/10
Filed: 1945-09-27
Abstract: 599,988. Centrifugal pumps. THOMPSON PRODUCTS, Inc. Sept. 27, 1945, No. 25054. Convention date, Jan. 5, 1944. [Class 110 (i)] [Also in Group XXVII] In a fuel supply system the fuel pump 26 is detachably mounted in a small auxiliary tank 13 inside the main fuel tank 10, inlets 41, 42 being open during operation, but adapted to be closed by flap valves 44, 45 to cut off the fuel from the interior of the auxiliary tank when it is desired to remove the pump, thereby avoiding the necessity of draining the main tank. The valves 44, 45 are operated from outside the tank by screws 50, 59 attached to rods 49, 57 carrying collars 53, 58 which engage bifurcated arms 48, 56, Fig. 2, attached to the valves which are spring-closed by springs 54, 60. A vent hole 43 for vapour beaten from the fuel during pumping by a beater 25 is provided with a similar spring-closed valve 62 controlled simultaneously with valve 44 by an extension of the rod 49. Alternatively, it may be controlled separately. The pump, driven by an electric motor 26, comprises an impeller 23 in a volute chamber 20 from which the fuel is forced along conduits 21, 29 in the casing 16 to the fuel supply line and the engine. A screen 28 extends between the casing 16 and motor 26. The, pump, attached to the flanged plate 36, is inserted through an opening 35 in the main tank wall 10 and a smaller concentric opening 34 in the flanged base-plate 12 of the auxiliary tank, being fixed in position by the screws 37. Plate 19 forming one wall of the volute chamber 20 is secured to the plate 36 by screws 40 to provide access to the impeller 23 without removing the whole pump. The member 33 forming the lower part of conduit 29 is secured to the casing 16 and plate 36 by a screw 31. Washers 55, 61 ensure tight closure of the valves 44, 45 and sealing washers 38, 39 may be interposed between the bottom of the auxiliary tank and the main tank.
Patent GB-1014421-A (GB)
Title: Solid state controlled rectifier relay
IPC: H03K17/72
Filed: 1962-06-29
Abstract: 1,014,421. Switching arrangements. R. L. WHITE. June 29, 1962 [Oct. 3, 1961], No. 25127/62. Heading H2H. [Also in Division H3] A solid-state relay circuit for alternating current switching comprises two semi-conductor controlled rectifiers 42, 45 connected in parallel across the alternating current source at 47, 49 and oppositely poled, the control electrodes of the rectifiers being coupled to a source of control current having a frequency at least ten times greater than the alternating current so that each of the rectifiers is caused to fire substantially immediately after its anode becomes positive with respect to its cathode. In the arrangement shown the source of control current comprises a relaxation oscillator 21 including four-layer diode 25 and capacitor 23 and is arranged to supply trigger pulses over transformer 32 to the control electrodes of the PNPN rectifiers 42, 45. During the positive half-cycle of the supply across terminals 47, 49 rectifier 42 conducts and during the negative half-cycle 45 conducts and once the frequency of the control current source is much greater than the A.C. supply, Fig. 3 (not shown) the rectifiers fire within a few degrees after their anodes become positive with respect to their cathodes. In a second arrangement, Fig. 4 (not shown) transformer 32 has only one secondary winding supplying an appropriate trigger pulse to the control electrodes of two complementary type controlled rectifiers. A transistor oscillator may be employed instead of the relaxation oscillator.
Patent GB-1007488-A (GB)
Title: Improvements in or relating to methods of producing electrically-insulating switchgear parts
Inventor: CHAPMAN LESLIE VICTOR
IPC: H01H33/72
Filed: 1960-06-28
Abstract: 1,007,488. Heavy - current switches. ENGLISH ELECTRIC CO. Ltd. Sept. 20, 1961 [June 28, 1960], No. 25137/65. Divided out of 1,007,486. Heading H2B. An insulator is lined, in the area subject to arcing on contact operation, with insulating refractory particles which are sprayed on to a bonding agent covered area or are spread by tumbling a heap of particles freely over the bonding agent covered area.
Patent GB-1012219-A (GB)
Title: Mountings for bollards and the like
Inventor: WALFORD HORACE RAYMOND
IPC: E01F1/00
Filed: 1962-06-30
Abstract: 1,012,219. Road signs. COOPER & CO. (BIRMINGHAM) Ltd. Sept. 30, 1963 [June 30, 1962], No. 25191/62. Heading E1G. A bollard or like road traffic sign 12 is secured to a base 11 through a thin felt pad 14 adhesively secured to the base 13 of the bollard and the base 11 which may be a concrete block flush with the top surface of the road 10. Two felt pads 14 may be used to provide easy detachment of the bollard when struck by a vehicle.
Patent GB-921971-A (GB)
Title: Therapeutic composition for the treatment of hirsute areas
IPC: A61K8/49
Filed: 1959-07-22
Abstract: A therapeutic shampoo composition for the treatment of the hair and scalp of humans and animals comprises 5-7-diiodo-8 hydroxyquinoline in the form of a water and/or alcohol suspension containing a detergent.  Specified alcohols are low molecular weight aliphatic alcohols of 1-5 carbon atoms e.g. isopropyl, n-propyl, isobutyl and ethyl alcohol.  The water and/or alcohol suspensions employ suspending agents e.g. bentonite, colloidal magnesium silicate, attapulgus clay, tragacanth, carboxy methyl cellulose or cetyl alcohol.  The compositions are formulated as shampoos using (i) anionic detergents e.g. the alkyl aryl sulphonates such as Nacconal, "Santomerse" (Registered Trade Mark) and Ultrawet, alkyl phosphate salts and alkyl sulphate derivatives such as sodium lauryl sulphate and triethanolamine lauryl sulphate.  (ii) Cationic detergents e.g. sulphosuccinamates such as n-octadecyl disodium sulphosuccinamate, tetrasodium sulphosuccinamate and n - octadecyl tetrasodium (1 - 2 - carboxy ethyl sulphosuccinamate).  (iii) Non-ionic detergents e.g. sulphonated fatty amines, anhydrohexitol partial oleate, sorbitan mono-laurate and polyoxyethylene sorbitan monolaurate.  Foam builders may also be added to the shampoos e.g. inorganic phosphate salts such as mono-sodium phosphate, derivatives of polyoxyethylene esters, long chain amides, cellulose derivatives and sequestering agents.  Other additives include perfume oil and glyceryl mono-ricinoleate.
Patent GB-1449746-A (GB)
Title: Method of producing a silver-cadmium oxide electricylly conduc tive composite material
IPC: C22C32/00
Filed: 1974-06-07
Abstract: 1449746 Ag-CdO composite material SQUARE D CO 9 April 1975 [7 June 1974] 25368/74 Addition to 1397319 Heading C7D A Ag-CdO electrically conductive composite material is produced by mixing Ag powder and CdO powder to provide a mixture comprising up to 30 wt. per cent CdO, heating the mixture (e.g. to 200‹C to 700‹C) in a reducing atmosphere (e.g. hydrogen, carbon monoxide, cracked ammonia, burnt natural gas, burnt propane or CO-H 2  mixture) to produce a Ag-Cd alloy powder and heating the alloy powder in an oxidizing atmosphere at a temperature in the range 180‹C to the melting point of the alloy. The Ag-CdO alloy powder produced may be compacted at 5 to 50 tons/square inch, sintered at 600‹C to the alloy melting point in air, oxygen, nitrogen, inert gas, vacuum or a mildly reducing atmosphere such that the CdO is unaffected for one to two hours. A layer of copper or silver may be applied to the body prior to sintering and the product coined at 60 tons/sq inch, resintered or annealed, re-coined and hot or coldrolled or extruded to strip or wire form and formed into electrical contact pads.
Patent GB-182042-A (GB)
Title: Improvements in boot trees
IPC: A43D3/14
Filed: 1921-09-26
Abstract: 182,042. Vaughan, S., and Williams, F. J., (trading as Vaughan & Williams). Sept. 26, 1921. Trees and stretchers.-Relates to adjustable toggle-link boot trees of the kind described in Specification 26734/12, and consists in a catchmember of channel cross-section having two spaced parts adapted to fit one on each side of an extending bearing on the socket member. As shown the catch-member 26 has an integral part engaging an outwardly disposed portion 24 of the socket through which the adjustable link 1 slides for adjustment. The catch-member is provided with a thumb piece 27 to withdraw, when desired', a catch 28 normally retained in position by a spring 29.
Patent GB-1510866-A (GB)
Title: Process for preparing high temperature nuclear reactor fuel compacts
IPC: G21C3/64
Filed: 1975-06-13
Abstract: 1510866 Nuclear fuel COMPAGNIE POUR L'ETUDE ET LA REALISATION DE COMBUSTIBLES ATOMIQUES 13 June 1975 [13 June 1974] 25429/75 Heading G6C A nuclear fuel compact is prepared by simultaneously pouring into a mould 4 a stream of coated fissile or fertile particles and a stream of granules of graphite and a binder to form a mixture 8, heating to melt the binder, and then compressing the mixture. After compression, the compact is heated to convert the binder into carbon. The coated particles may have a further coating of a mixture of resin and graphite. Layers 6 consisting solely of graphite and binder may be provided at the top and bottom of the mixture to prevent damage to the particle coatings during compression. In examples, particles of UO 2  coated with pyrocarbon are mixed with granules of graphite containing a phenolic resin. In another example, a mixture of coated particles of (UTh)O 2  and ThO 2  is treated. The compounds have a high proportion of coated particles and a high matrix density.
Patent GB-1456479-A (GB)
Title: Preparation of 5-methyl-2-nitrophenol
IPC: C07C205/22
Filed: 1975-06-13
Abstract: 1456479 Preparation of 5-methyl-2-nitrophenol SUMITOMO CHEMICAL CO Ltd 13 June 1975 25469/75 Heading C2C A process for the preparation of 5 methyl-2- nitrophenol comprises the steps of (1) sulphonating di-m-cresyl carbonate with a sulphonating agent, (2) nitrating the resulting sulphonated di-m-cresyl carbonate with a nitrating agent, (3) hydrolysing the resulting compound to crude nitro-m-cresols, and (4) steam distilling said nitro-m-cresol to obtain as distillate 5-methyl- 2-nitrophenol.
Patent GB-808066-A (GB)
Title: An improved fastener
Inventor: FERNBERG ERIC BIRGER
IPC: F16B5/12
Filed: 1955-09-05
Abstract: 808,066. Mouldings. F. T. PRODUCTS Ltd. Aug. 29, 1956 [Sept. 5, 1955], No. 25471/55. Class 20(4) [Also in Group XXV] A fastener for securing an article to a panel comprises a strip of spring metal the major part of the longitudinal edges of which lie in an approximate flat plane, means for engaging the panel on one side of the strip and pressed out of the strip on the side opposite the panel engaging means, a dome 10, of which two edges 11, 12 are continous with the longitudinal edges of the strip, these edges of the dome being directed upwardly and outwardly with respect to the strip to provided overhangs to engage the article, e.g. beading 20, to be secured. The panel engaging means comprises a tongue 17 and a detent 15 sheared out of the portions 16, 13 respectively of the strip, a dimple 18 being provided on portion 16 to prevent scratching of the panel on insertion of the fastener. The single dome may be replaced by two smaller domes, one near each longitudinal edge of the fastener. Specifications 685,630, 709,926, 734,274 [all in Group XXV]. and 742,453 are referred to.
Patent GB-1281495-A (GB)
Title: Improvements in and relating to fuel injection systems for i.c. engines
IPC: F02D41/32
Filed: 1971-04-19
Abstract: 1281495 Fuel injection control systems ROBERT BOSCH GmbH 19 April 1971 [28 March 1970] 25475/71 Heading G1N In an I. C. engine fuel injection control system of the type having a monostable multi-vibrator 12 to provide injection valve opening pulses of duration dependent upon engine speed by means of a control voltage whose curve shapes varies periodically in synchronism with the opening pulses and which is applied to the base of the input transistor T1 of the multi-vibrator and the junction of a voltage divider R1, R2, a second voltage divider R21, R22 is connectible in parallel with the divider R1, R2 when engine full-load is sensed so as to reduce the effect of the control voltage and thereby increase or decrease the amount of fuel supplied. As shown, full load is sensed from the duration of the opening pulses at point K by a delay circuit including a capacitor C6 and transistors T8, T9. If the opening pulses are longer than the set delay a transistor T7 becomes conductive during the opening pulse and thereby switches in the second voltage divider R21, R22. In an alternative, Fig. 4 (not shown), a mechanical switch coupled to the accelerator pedal is used to switch the transistor T7. The mechanical switch may alternatively be connected to the throttle valve or a diaphragm in a pressure box connected to the intake manifold.
Patent GB-779182-A (GB)
Title: Power-operated haulage apparatus
IPC: E21D15/60
Filed: 1955-09-06
Abstract: 779,182. Haulage winches. PUTZER, H. Sept. 6, 1955 [Sept. 6, 1954], No. 25536/55. Class 78 (5). Power-operated haulage apparatus comprises a load chain-wheel 50 having a driving-shaft 16 therefor coupled to the driving motor 4 through a freewheel 15, 11, and hollow shaft 8, the whole being enclosed in tubular casing 1 provided with anchoring eye 2 and apertures 3 for entrance of the chain 3 to the chain-wheel. As shown, hollow shaft 8 is driven from motor 4 through bevel gearing 6-7 and carries pivoted driving pawl 11 and pivoted catch pawl 13, the pawl 11 co-operating with and driving ratchet 15, and the latter driving chain-wheel 50 through shaft 16 and gear-chain 17. Pawl 11 is controlled by catch pawl 13, the latter engaging the former through leaf-spring 14. Additionally each pawl is provided with a ball-catch 19 to seat in apertures 21 formed in flanges 9 of hollow shaft 8. Thus, pawl 11 normally engages ratchet 15 to transmit the drive from the motor to the chain-wheel but, in the event that the said pawl 11 is out of engagement therewith the starting of the motor causes rotation of shaft 8 and of the two pawls, pawl 13 being forced inward by engagement with stop 22 and in turn forcing pawl 11 into engagement with the ratchet and thus transmitting the drive to the chain-wheel. Alternatively, if pawl 11 is engaged with the ratchet wheel then the chain may be freed by manually pulling the chain to cause the ratchet tooth to engage with and swing out pawl 11 till the latter, by engagement of its ball-catch in its aperture, is held so that the chain is free.
Patent GB-862191-A (GB)
Title: Synthetic lubricants
IPC: C08F10/00
Filed: 1958-08-08
Abstract: A synthetic lubricant is produced by polymerizing one or more C5 to C14 normal alphamonoolefins in the presence of a ditertiary alkyl peroxide.  The catalyst may be di-t-Bu-, di-t-Am-, or t-Bu-t-Am-peroxide, and may be added intermittently or continuously. The examples describe the fractionation/purification of products which may be used as lubricants for jetengines.ALSO:A synthetic lubricant is produced by polymerizing one or more C5 to C14 normal alphamono-olefins in the presence of a di-tertiary alkyl peroxide, e.g. di-tert.-butyl-, di-tert.-amyl- or tert.-butyl-tert.-amyl-peroxide.  The products are used for lubricating jet engines.
Patent GB-1307785-A (GB)
Title: Impact resistant coating for heat resistant superalloys and the like
IPC: C22C19/07
Filed: 1971-04-19
Abstract: 1307785 Diffusion coating of superalloys with nickel CHROMALLOY AMERICAN CORP 19 April 1971 ¦22 June 1970] 25629/71 Heading C7F A method of forming a nickel coating on a chromium-containing superalloy article comprises embedding the article in a mixture of nickel powder an inert refactory material and a small amount of sulphur e. g. up to 0À1%, and heating the article and said mixture e. g. at 1050 C., to effect diffusion coating of the article with nickel. The amount of free oxygen present in the mixture is kept low to prevent oxidation of the sulpher. This may be achieved by including a quantity of Ti, Th, Ce or Y in the mixture or by sweeping out oxygen with an inert gas e. g. argon. After the nickel coating has been formed the surface is cleaned and aluminized to produce a coating containing nickel aluminide. This may be achieved by embedding the nickel-coated article in a mixture comprising aluminium, a buffering metal e.g. Cr. Ni, Fe or Co, ammonium bifluoride and an inert refractory material and heating.
Patent GB-1148755-A (GB)
Title: Improvements in or relating to ignition systems and ignition coils for internal combustion engines
IPC: H01F38/12
Filed: 1966-06-09
Abstract: 1,148,755. Ignition coils. ROBERT BOSCH G.m.b.H. 9 June, 1966 [10 June, 1965], No. 25647/66. Heading H1T. [Also in Division F1] An ignition coil includes a damper winding 13 associated with a diode 35 which short circuits the damper winding when a voltage is induced in this winding by closing the primary winding circuit. The coil may be filled with oil and the diode may be arranged inside the coil housing on the upper end face of the windings.
Patent GB-973849-A (GB)
Title: Fire-proof ironing boards
IPC: A47B13/08
Filed: 1963-06-27
Abstract: An ironing board comprises, a rigid metal or laminated support which is fire proof at 250 DEG C. and a resilient covering of vulcanised elastomer, between 0.5 and 10 mm. thick, also resistant to 250 DEG C. fixed thereto.  The support may be pressed from sheet steel, aluminium or light alloy, or laminated from glass fibre, asbestos and slag wool bonded with resin.  The coating which may be of the type described in Specifications 851,578 and 920,020, may be sprayed in layers on to the support or may be made in a layer and stuck to the support.  The surface of the coating may be covered with a glass fabric.
Patent GB-1298297-A (GB)
Title: Electrical humidity sensing element
Inventor: THOMA PAUL EDWARD
IPC: G01N19/10
Filed: 1971-04-19
Abstract: 1298297 Measuring moisture content electrically JOHNSON SERVICE CO 19 April 1971 [24 Aug 1970] 25767/71 Heading G1N A moisture sensitive element comprises a core material of which the dimensions are variable with moisture content in which material are dispersed hydrophobic carbon particles other than graphitised carbon and preferably those having a volatile content as chemisorbed surface oxygen of less than 6Î10<SP>-5</SP> gram per square metre of carbon surface area so that the electrical resistance of the element varies with atmospheric moisture content. In a preferred embodiment the hydrophobic characteristics are achieved by heating the particles at between 1800F-6000F in a non- oxidising or reducing atmosphere. The carbon is amorphous having a fused agglomerate structure where individual particle sizes are in the range 1 to 100 millimicrons while the agglomerates or clusters have an average largest dimension of between three and thirty times the average smallest dimension. The carbon particles absorb and/ or absorb less than 4% and preferably less than 1% by weight of water at 78F when subjected to a change in relative humidity from 0% to 90%. The carbon constitutes up to 50% by weight of the core. One or more outer layers 8 of moisturedimension-sensitive material may be disposed on the core and hydrolyzed outer layers 10 may be provided. In use compression or extension of the core material due to moisture causes core resistance to vary due to re-arrangement of the carbon particles. The element may be cylindrical Fig.5 (not shown). Examples of suitable materials are listed in the Specification.