baber/WOPTO huggingface dataset:
Patent GB-694485-A (GB)
Title: Improvements relating to non-linear electrical control circuits
Inventor: CLAYDEN RONALD THOMAS
IPC: H04N5/202
Filed: 1949-08-26
Abstract: 694,485. Electric analogue calculating systems. ELECTRIC & MUSICAL INDUSTRIES, Ltd. Aug. 28, 1950 [Aug. 26, 1949], No. 22176/49. Class 37. [Also in Group XL (c)] A non-linear circuit more particularly for gamma correction in television systems, comprises means for varying the signal level applied to the non-linear element of the circuit in order to vary the non-linearity introduced and means for varying the gain of an amplifier following the element such that the peak output voltage remains constant when input signal is so varied. A logarithmic circuit comprises a first non- linear potentiometer formed by a resistor 3 and a diode valve 7 acting as a non-linear resistor, followed if required by a second and similar potentiometer 4, 8, the output being applied to an amplifier valve 6. The circuit is fed from an amplifier 1 having a gain adjuster 2 and A.G.C. is applied to the valve 6 to maintain the peak value of the output signal constant with changes in the setting of the input gain adjuster. The A.G.C. voltage may be derived from constant amplitude pulses added to the signal. When the signals applied to the output valve are large, the A.G.C. voltage is sufficient to bias the valve 6 to a more curved part of its characteristic and an increased non-linearity is obtained. Specifications 683,605 and 30605/39 (as open to inspection under Sect. 91) are referred to.
Patent GB-1505104-A (GB)
Title: Insulating panel for walls and roofs of buildings
IPC: E04B1/80
Filed: 1975-05-22
Abstract: 1505104 Composite panels GEGEDUR SOC DE TRANSFORMATION DE L'ALUMINIUM PECHINEY 22 May 1975 [24 May 1974] 22200/75 Heading E1B A composite panel comprises inner and outer facing sheets 1, 2 and at least two internal aluminium reflecting sheets 7, 8 the region 26 between which is substantially fluid tight. The regions between each outside facing sheet and the internal reflecting sheets may be fluid tight or may be ventilated by apertures communicating with the atmosphere at the top and bottom of the panel. The panels have channel shaped framing members 5 which contain a sealing material 24, e.g. foamed plastics in which the edges of the sheets 7, 8 are embedded. Externally of the building wall or roof the facing sheets may be glass, anodised or painted aluminium or stainless steel, and internally may be aluminium, stainless steel wood or plastics. The frames may be of metal or plastics and when of metal may incorporate insulation material 6 between the jointed metal parts.
Patent GB-245693-A (GB)
Title: Box-like mould for the production of moulded stone slabs
IPC: B28B7/24
Filed: 1925-09-07
Abstract: 245,693. Brewer, G., (Krupp Akt.-Gcs., F.). Sept. 7, 1925. Moulds.-A mould for casting flat, Z- shaped slabs comprises a box-like casting carrying hinged ends C and sides B, the latter being furnished with staggered, comblike projections b<1> accommodating vertical partitions D which are held in place by a bar F clamped by yokes G pivoted to the ends C. The yokes B are furnished with bars b<2> having turned ends b<3> to engage the ends C and are locked, during casting, by bars K pivoted to pins c<1> on the ends C and engaging, by slots, bolts c<2> on the opposite ends to which they are clamped by nuts c<3>. The sides B are freed from the cast slabs by turnbuckles H adapted to force spindles i' against the bars b<2>.
Patent GB-1088543-A (GB)
Title: Flexible heating elements
Inventor: AMES JACK
IPC: D21H19/32
Filed: 1964-05-29
Abstract: A flexible heating element comprises an electrically conducting organopolysiloxane elastomer coated on a non-woven non knitted substrate.  The elastomer may be formed by heating a composition comprising 100 parts by weight of an organopolysiloxane gum having therein a small proportion of unsaturated groups, e.g. vinyl or allyl groups, attached to silicon atoms, 25 to 100 parts by weight of carbon black, 0 to 50 parts by weight of one or more other fillers, 0 to 10 parts by weight of a structure control agent and 0.25 to 10 parts by weight of an organic peroxide curing agent, e.g. dicumyl peroxide.  The composition may comprise 100 parts by weight of a hydroxy-ended organopolysiloxane gum, 25 to 100 parts by weight of carbon black, 0 to 50 parts by weight of one or more other fillers and 0.5 to 25 parts by weight of an organo triacyloxysilane; or 100 parts of an organopolysiloxane gum having at least two unsaturated groups per molecule, 0.1 to 100 parts by weight of an organosilicon compound having at least two hydrogen atoms directly bonded to a silicon atom per molecule, 25 to 100 parts by weight of carbon black, 0 to 50 parts by weight of one or more other fillers, 0 to 10 parts by weight of a structure control agent and up to 0.2 parts by weight (as platinum) of platinum metal or a platinum-containing catalyst. The composition may be applied by dipping, knife-coating, calendering or spraying.  The substrate may be a felted material e.g. asbestos, cellulose-based, polyethylene terephthalate or a polypropylene paper, or a film material e.g. polyethylene terephthalate or polypropylene film.  The elastomer coating may be form 0.0005 to 0.01 inch thick. The rearward side of the substrate may be coated with the electrically conducting elastomer or with other material e.g. a water-repellent organopolysiloxane.  The element may be provided with electrodes of metal wire, gauze or foil, which may be stapled or stitched to the element, or of metal film or foil which has been deposited on the substrate either electrolytically or by painting. The element may be incorporated in a wall or ceiling heating panel or heating jackets for vessels.
Patent GB-163230-A (GB)
Title: Arrangement for withdrawing distillation gases in vertical retorts
IPC: C10B27/02
Filed: 1920-07-27
Abstract: 163,230. Pieters, J. July 27, 1920. Carbonizing process and apparatus.-In coking materials which are with difficultv permeated by gas, in vertical retorts, a part of the distillation gases is taken off at the top of the retort and the greater portion is collected from various points in the unheated ends of the vertical walls. The gases evolved from the top of each retort A is withdrawn through openings a to collecting mains b, stand pipes c and main d, and the gases from the lower part of the retorts are withdrawn through pipes e connected to vertical pipes f and main g, the two mains d and g being connected to a common exhausting conduit leading to a byproduct recovery plant.
Patent GB-785874-A (GB)
Title: Improvements in and relating to electrical switches
IPC: H01H9/08
Filed: 1956-07-19
Abstract: 785,874. Switches. TROUSSIER, P. J., and COMEAU, H. L. July 19, 1956 [July 19, 1955], No. 22383/56. Class 38 (5). A switch comprises a two-part insulating base 10, 17 with combined strip-like contacts 11, 12 and terminals trapped between the parts, and having upstanding screw-threaded rods 20, 21 over which a two-part housing 22, 36 is threaded and secured by nuts 56, 57. The housing part 22 has bosses 23 ... 26 into the side gaps of which corresponding bosses on the housing part 36 fit, all the bosses having apertures which align when the parts are assembled, to thread on the rods 20, 21. Part 22 also carries sockets 27, 28 receiving the pins of a plug-in fuse 62, the sockets being integral with plates which are fixed by screws 31, 32 and carry contacts 33, 34. A rotor, Fig. 6, comprises flat discs 40, 41 registered by means of pins and holes 52, 53 and rotatable as a whole within the housing by means of bosses 42, 43 on the discs engaging apertures in the respective housing parts. The discs are slotted to receive contacts 46 ... 49 interconnected in pairs by braid strips 50, 51 and pivotable about their inner ends so as to engage the corresponding fixed contacts under the action of springs. The bosses 42, 43 have tongue and groove formations 44, 45 whereby a number of switches can be assembled side-byside and operated by a handle 61, the interengaging tongues and grooves being parallel to the handle whereby any switch can be removed when the latter is in the " off " position, Fig. 2. The drive from the handle may be through a tongued spindle working in a sleeve, or through a rotor like that of Fig. 6 but having no contacts, an additional housing 22, 36 being provided in either case, together with means (not shown) to hold the handle " on " or " off."
Patent GB-1461112-A (GB)
Title: Packaging tray with upper and lower viewing windows
IPC: B65D1/34
Filed: 1974-05-21
Abstract: 1461112 Moulded tray KEYES FIBRE CO 21 May 1974 [25 June 1973] 22529/74 Heading B8P A moulded open top tray for use in packaging products comprises a base portion 16, a plurality of hollow posts 24 tapering upwardly from the base portion, openings 26 through the base portion between the posts defining lower viewing windows, and the hollow posts being truncated defining upper viewing windows 28 and providing product support rims 30 whereby when a product is packaged in the tray portions thereof located over a post are visible through windows 28 and portions not located over a post are visible through windows 26. As described the tray is moulded from wood and/or paper pulp to be of generally rectangular shape with outwardly flared side walls 18 having a lip 22. The posts 24 are of circular section and are arranged in rows alternating with rows of the openings 26. Inverted channel section ribs 32 and 36 of the same height as the posts are provided between the openings 26, and between the posts 24 and side walls 18 respectively. Solid lugs 34 are provided between ribs 32 and posts 24, and lugs 38 are provided on ribs 36 to form spacers when a plurality of the trays are nested together.
Patent GB-286240-A (GB)
Title: Improvements in rotary engines having shutters or flaps
IPC: F02B53/00
Filed: 1927-08-27
Abstract: 286,240. Birkigt, M. March 1, 1927, [Convention date]. Void [Published under Sect. 91 of the Acts]. Dravings to Specification. Fixed-abutment type.-The internal contour of the casing of a radially sliding vane motor or pump is defined by two oppositely situated circular arcs of 90‹ struck from the rotor axis but of different radius which are joined by two circular arcs tangential to the arc of larger radius.
Patent GB-696402-A (GB)
Title: Improvements in fluid-pressure-responsive ignition control devices
IPC: F02P5/10
Filed: 1951-09-28
Abstract: 696,402. Pistons. GENERAL MOTORS CORPORATION. Sept. 28, 1951 [Oct. 14, 1950], No. 22655/51. Class 122(i) [Also in Group XXVII] The outer periphery of a diaphragm 35 is clamped between flanges 31, 34 of housing shells 30, 32. A rivet 42 secures a motion transmitting member 40 and a washer 41 to the centre of the diaphragm. The washer 41 has a peripheral flange 41a and tangs 41b which form a seat for a helical spring 43 compressed between the washer 41 and a plug 37. The housing 30 is connected to an engine induction system while the housing 32 is open to atmosphere. Stop means on the member 40, by engagement with the wall of shell 32, limit the motion of the diaphragm in each direction.
Patent GB-964833-A (GB)
Title: Gauge for use in grinding internal bores
Inventor: PAINTER ROBERT ARTHUR
IPC: B24B49/04
Filed: 1962-06-13
Abstract: 964,833. Pneumatic gauges. HEALD MACHINE CO. June 13,1962, No. 22690/62. Heading G1M. A pneumatic gauge for insertion in an internally-ground workpiece 11 during machining comprises a body 18 of crescent-shaped cross-section, to clear the eccentrically positioned grinding wheel 13, the convex surface being of greater diameter than the bore and provided with an air orifice 24 and two hard, smooth bearing pieces 21, 22. When these are positioned as shown, variation of the bore diameter and of the gap width between the convex surface 14 and the bore wall 12 are approximately equal. The orifice 24 communicates with the source of pressure via the duet 23 in the gauge body 18,10. This is inserted into the workpiece,on the opposite side from the grinding tool, by way of the hollow driving shaft for the an. ular driving platen.
Patent GB-1048101-A (GB)
Title: Sealing device for doors and the like closure members
IPC: E06B7/23
Filed: 1963-06-07
Abstract: 1,048,101. Draught excluders. C. HOLZAEPFEL and A. HOLZAEPFEL. June 7, 1963 [June 9, 1962], No. 22719/63. Heading E1J. A sealing strip 13 of natural or synthetic resinous material (e.g. rubber) secured to the edge of a door 14 or the like has an arcuate lip 13<SP>1</SP> of softer material connected only along one edge of the strip 13. The door 14 is shown in its open and closed positions. The strip 13 and lip 13<SP>1</SP> taper towards their free edges, which interengage when the door is closed. The strip is secured by glueing and has a preferably integral serrated piece 15 engaging a slot in the door. The door 14 is chamfered to clear a second door 16 and closes against a stop 17. In a modification the edges of both doors are chamfered and each is provided with a sealing strip.
Patent GB-1025229-A (GB)
Title: Process for the production of alloy steels
IPC: C21C5/00
Filed: 1963-06-07
Abstract: Alloy steel is produced from crude iron by first top-blowing with oxygen in the presence of a slag rich in iron oxide and having a basicity greater than 3 until the phosphorus content of the bath is reduced below 0.025%.  The slag is then removed, alloying elements added, generally as ferro-alloys or as alloy steel scrap, and the bath again blown with oxygen under a slag of basicity about 2 and constituting 1 to 4% by weight of the metal until the desired carbon content is reached. Heat producing substances such as ferro-silicon may be added before the second stage of blowing; after blowing is complete reducing agents such as aluminium, calcium carbide ferro-silicon or calcium silicide may be added to recover alloying elements from the slag.  Also after blowing is complete the slag may be partially removed and additions of lime and fluorspar melted by burner; maintenance of this slag in a reducing condition by the addition of calcium carbide, coke or calcium silicide reduces the sulphur content of the steel to 0.005%.
Patent GB-945105-A (GB)
Title: Steroids
IPC: C12P33/00
Filed: 1960-06-29
Abstract: 1,2-Dehydrogenated-steroids are prepared by subjecting steroids saturated in the 1,2-position to a mixture of a hydrogen carrier and a cell-free extract of a 1,2-dehydrogenating strain of the micro-organisms Nocardia, Corynebacterium, Mycobacterium, Cylindrocarpon or Bacterium. The hydrogen carriers are such that after combination with the hydrogen in the process, may be reconverted by the addition of oxygen so as again to be available for taking up further hydrogen.  Suitable hydrogen carriers mentioned are oxidation-reduction reagents, for example, dyes such as potassium ferricyanide; thiazines and imine derivatives-particularly methylene blue, phenazine methosulphate and ethosulphate, toluidine blue and resazurin; benzoquinones and imine derivatives-particularly o-quinone, toluylene blue chloride2 and phoenicin; naphthoquinones and imine derivatives-particularly 5-hydroxy -1,4-naphthaquinone; oxazines-particularly cresyl blue and brilliant cresyl blue; and indophenols, a number of which are specified. The cell-free extract of a 1,2-dehydrogenating strain of one of the above microorganisms may be obtained by substantially destroying all living cells, if required, after grinding the whole culture.  The cell destruction may be brought about by autolysis, enzymic digestion methods, grinding, freezing and throwing, sonic disintegration, shaking with solvents such as acetone, shaking with glass beads, or explosion by sudden release of pressure.ALSO:The invention comprises a cell-free extract obtained from a culture of a strain of a microorganism Nocardia, Corynebacterium, Mycobacterium Cylindrocarpon or Bacterium which is capable of dehydrogenating steroids at the 1,2-position and a hydrogen carrier which is a hydrogen acceptor which, after combination with the hydrogen in the dehydrogenation process, may be reconverted by the addition of oxygen so as again to be available for taking up further hydrogen. Suitable hydrogen carriers mentioned are oxidation-reduction reagents, for example, dyes such as potassium ferricyanide; thiazine and imine derivatives-particularly methylene blue, phenazine methosulphate and ethosulphate, toluidine blue and resagurin; benzoquinones and imine derivatives-particularly o-quinone, toluylene blue chloride and phoenicin; naphthoquinones and imine derivatives-particularly 5-hydroxy -1,4-naphthoquinone; oxazines-particularly cresyl blue and brilliant cresyl blue; and indophenols, a number of which we specified. The cell-free extract of the above microorganisms may be obtained by substantially destroying all living cells, if necessary, after grinding the whole culture. The cell destruction may be brought about by autolysis, enzymic digestion methods, grinding, freezing and thawing, sonic disintegration, shaking with solvents such as acetone, shaking with glass beads, or explosion, by sudden release of pressure.
Patent GB-1468433-A (GB)
Title: Support element for use in a modular structure
IPC: A47B57/54
Filed: 1974-05-22
Abstract: 1468433 Structural joints G CIANCIMINO 22 May 1974 22865/74 Heading F2M [Also in Division A4] A frame structure, particularly for constructing unit furniture, comprises upright supports 1 each consisting of two parallel tubular members 2, 3, e.g. aluminium extrusions, whose opposed longitudinal edge faces includes either intermittent or continuous undercut recesses 21, 22, respectively, which are of circular section joined by shoulders 23 to sloping faces 7, 8, respectively, and a number of link blocks 9 each having two circular lobes 15, 16 and being divided into two parts so as to divide each lobe, the parts when closely fitted together being capable of being fitted loosely between the members 2, 3 with the lobes 15, 16 sliding in the recesses 21, 22 and inclined surfaces 18 of the block positioned opposite the sloping faces 7, 8, such that subsequent tightening of a screw (20, Fig. 3, not shown) threaded in one of the block parts, causes the two block parts to expand into engagement with the members 2, 3, with the lobes 15, 16 tightly engaging the grooves 21, 22 and the inclined surfaces 18 of the block wedged tightly against the sloping surfaces 7, 8. The assembled supports 1 are said to be sufficiently rigid, when fitted between floor blocks 4, having adjustable feet, and ceiling blocks 5, to provide the sole support necessary to carry a range of shelf and cupboard units 12, 13, the shelves being carried on ledges 11 of brackets 10 each secured to a block 9, while the cupboard units are supported at their lower edges on brackets 10 secured to blocks 9<SP>1</SP> and additionally secured directly to further blocks 9<SP>11</SP>.
Patent GB-614919-A (GB)
Title: Improvements in and relating to photographic matt layers or surfaces
IPC: G03C1/95
Filed: 1945-09-06
Abstract: Carbamide resins of particle size corresponding to that of starch or barium sulphate are made by condensation of urea and/or one or more urea derivatives with an aldehyde and are used in producing photographic matt layers.  In example (1), urea is condensed with formaldehyde in aqueous solution in presence of ammonia, the still clear liquid is poured into cold dilute hydrochloric acid to precipitate a finely divided deposit of resin and this is washed and added to a gelatin solution, to give a mixture suitable for preparation of a matt layer.  Example (2) describes a ureaformaldehyde resin precipitate produced by a similar method, but one which swells in water.  Specification 486,252 is referred to.
Patent GB-1036652-A (GB)
Title: Improvements in or relating to locking mechanism for the doors of safes and the like
Inventor: MOSS LESLIE ROBERT
IPC: E05B65/00
Filed: 1964-06-03
Abstract: 1,036,652. Sliding bolts. MINISTER OF PUBLIC BUILDING AND WORKS. June 3, 1965 [June 3, 1964], No. 22953/64. Heading E2A. A locking mechanism for the doors of safes and the like comprises a multifaced cam mechanism, actuated by rotation of the door handle for moving a tail bar 6 to operate the bolt or bolts 2 of the safe, which cam mechanism also moves an operating rod 15 to rotate a locking member 24 into position behind the tail bar when the bolt or bolts is or are in the fully shot position. As shown, a cam 11 mounted on a handle spindle 12 is located in a slot 10 of a flange 9 depending from the tail bar 6 and carries a pin 13 which co-operates with a cam 14 also mounted on the spindle 12 to move the rod 15 longitudinally when the handle is rotated. The rod 15 is slidably connected with a key or permutation lock casing 17, the bolt 18 of the lock being engageable through the rod 15 with a slot 19 in the flange 9. The rod 15 is coupled to the member 24 through a link 21 which carries a projection 22 engageable with a hole 53 in the member 24. A spring-loaded plunger 29 normally bears against the projection 22, but should the projection be removed from the hole 23 as the result of an illegal attempt to open the safe, the plunger 29 will engage the hole 23 to maintain the blocking position of the member 24. Connecting rods 26, 27 interconnect the member 24 with other similar members and tail bars (not shown), located above and below the bar 6.
Patent GB-784958-A (GB)
Title: Improvements relating to gear hobbing machines
Inventor: THOMAS ALFRED KURT
IPC: B23F19/06
Filed: 1955-08-10
Abstract: 784,958. Gear-cutting. CRAVEN BROS. (MANCHESTER), Ltd. June 13, 1956 [Aug. 10, 1955], No. 23024/55. Class 83 (3). A gear-hobbing machine, in which the hobbing head d can be replaced by a shaving head, comprises two headstocks for carrying a gear a with its axis horizontal, and a separate drive through each headstock, one b for rotating the gear at a low speed for hobbing and the other c at a high speed for shaving. Means is provided on the machine bed to support a gear to mesh with the hobbed gear for testing purposes, the gear then being shaved selectively.
Patent GB-797346-A (GB)
Title: Improvements in polymer compositions
Inventor: MERRETT FRANK MARK
IPC: C08F2/08
Filed: 1954-08-09
Abstract: Colloidal solutions or solvent latices of graft polymers comprise particles of graft copolymer in an organic medium wherein one chain of the copolymer is soluble and the other component chain of the copolymer is insoluble in the medium, the insoluble chain of the copolymer being kept in suspension by the solubility of the soluble chain.  Examples of such graft polymers are the polymers of Specification 788,651, e.g. rubber-methyl methacrylate.  The solutions or latices may be made by dissolving a graft polymer in a solvent for both component chains and adding sufficient of a non-solvent for one of the chains such that this component only becomes insoluble in the mixture of solvent and non-solvent.  For rubber-methyl methacrylate, benzene-methanol or xylene-methanol may be used.  The solutions which may or may not have vulcanizing agents added may be diluted, e.g. with methyl ethyl ketone, and sprayed to form a film or coating.ALSO:Colloidal solutions or solvent latices of graft polymers comprise particles of graft copolymer in an organic medium wherein one chain of the copolymer is soluble and the other component chain of the copolymer is insoluble in the medium, the insoluble chain of the copolymer being kept in suspension by the solubility of the soluble chain.  Examples of such graft polymers are the polymers of Specification 788,651, e.g., rubber-methyl methacrylate.  The solutions or latices may be made by dissolving a graft polymer in a solvent for both component chains and adding sufficient of a non-solvent for one of the chains so as to make this component only insoluble in the mixture of solvent and non-solvent. For rubber-methyl methacrylate, benzene-methanol and xylene-methanol may be used.  The solutions with or without vulcanizing agents may be diluted, e.g., with methyl ethyl ketone, and sprayed to form a film or coating.