baber/WOPTO huggingface dataset:
Patent GB-863707-A (GB)
Title: Apparatus for culture of biological cells and tissues
Inventor: PAUL JOHN
IPC: C12M3/00
Filed: 1957-08-23
Abstract: 863,707. Apparatus for cultivating biological cells &C. NATIONAL RESEARCH DEVELOPMENT. CORPORATION. Aug. 18, 1958 [Aug. 23, 1957; April 23, 1958], Nos. 26639/57 and 12863/58. Class 81 (1). Apparatus for the culture of biological cells and tissues, e.g. a strain of mouse fibroplasts, comprises two Circuits " which may be interconnected by means of a connecting-path 13 in the Figure which may be opened or closed. The first circuit 10 comprises a reservoir 11 for a liquid nutrient medium and the second circuit 12 contains a growth vessel 14 in which the cells or tissues are maintained in suspension in the growth medium and which may be maintained at a suitable temperature by means of a thermostatically controlled bath. The material in both circuits may be circulated by means of a peristaltic pump 15. Included in the apparatus are means whereby batches of suspension may be automatically pumped from the growth vessel wherein it is simultaneously replaced by fresh medium from the reservoir circuit at predetermined intervals in such amounts that the concentration of cultivated material in the growth vessel remains substantially constant. This may be done, for example, by means of a solenoid-operated tap 28 activated by an electrical circuit wherein uniselector relay means operates after a given number of impulses from a switch operated by a cam on the pump shaft and which is subsequently re-set automatically until a fresh impulse causes the relay to operate again. The removal and replacement of medium may alternatively be made more directly dependent on the amount of growth present in the growth circuit by utilizing a photo-electric cell in association with an electrical circuit which produces the required impulse when the turbidity of the medium reaches a predetermined value. Alternatively, it may be made dependent on the pH of the medium by using as above the photo-electric cell 37 receiving radiation from a light source 36 through a filter 38A and a glass cell 31 which forms part of a closed supplementary circuit 33 containing a physiological salt solution and an indicator, e.g. phenol red, and linked to the primary (growth) circuit in a dialysis vessel 32 in which the fluid in the primary and secondary circuits are separated by a semi-permeable membrane. In this case the filter is chosen to transmit light of a limited wave-length and the photo-electric cell is effected when the indicator changes colour. The growth vessel 14 may be of the form shown in Fig. 5, wherein the limbs 17 and 18 connect it to the circuit, and gas, e.g. air containing 5% CO 2 , may be passed through the space above the liquid by means of limbs 22 and 23.
Patent GB-1496405-A (GB)
Title: Caging system for a gyro
IPC: G01C19/26
Filed: 1975-06-24
Abstract: 1496405 Mechanical caging of gyroscopes SINGER CO 24 June 1975 [18 Nov 1974] 26762/75 Heading G1C A caging system comprises a split ring 11 having a tab 13, 14 on each end thereof, the ring having a first configuration where the minimum inner spacing thereof is greater than the diameter of the rotor 10 and a second configuration where the minimum inner spacing is less than that of the rotor 10 so as to limit the tilt capability of the rotor 10, there being provided means for effecting the movement of the split ring from one configuration to the other. In the embodiment shown, the split ring 11 is retained in its stressed configuration, where it cages the rotor 10, by a pin 16a passing through apertures 13a, 14a in tabs 13, 14, bending of the ring 11 being facilitated by grooves 31, 32. Gas to drive the rotor 10 also passes via aperture 19 into chamber 18a in base 26 so as to push outwardly caging pin 20 and maintain the pin 16a in position. When the rotor speed is sufficient the gas-pressure in chamber 18a drops to allow spring 17 to retract the pin 16a and uncage the rotor 10 by relaxing of ring 11. Alternatively, a solenoid or pyrotechnic actuator may be employed to move pin 16a. In a second embodiment Figs. 6-12 (not shown) the unstressed configuration of the split ring corresponds to the caged state, the tabs being forced apart by a member incorporating a conical portion, the movement being effected by gas-pressure
Patent GB-463434-A (GB)
Title: Improvements in or relating to the welding of magnesium and magnesium alloys
IPC: B23K35/36
Filed: 1935-09-27
Abstract: In welding magnesium and magnesium alloys a flux is used consisting predominantly of one or more halides of the alkali and/or alkaline earth metals and also an acid, either as such as in the form of an acid salt, which acid, at the welding temperature, is less volatile than any halogen hydracid derived from the halides of the flux, the acid or acid salt being of such a nature that neither it nor any reaction product formed during the welding has any corrosive action if left in contact with the magnesium or magnesium alloy.  The acids or acid salts are normally those having an acid radical which combines with magnesium to give insoluble or sparingly soluble salts. Examples of acids are boric acid, oxalic acid, and metaphosphoric acid, and acid salts which may be used include alkali metal or ammonium acid orthophosphates or acid pyrophosphates, e.g. monopotassium orthophosphate.  Small quantities, e.g. from 0,2-1 per cent, of manganese dioxide may be added to the flux to facilitate the expulsion of the halogen hydracid.  The flux may be applied in the form of an aqueous or alcoholic suspension.  Particular fluxes described are: (a) 10 parts of lithium chloride, 5 parts of potassium fluoride, and 2 parts of metaphosphoric acid; (b) 12,5 parts of lithium bromide, 5 parts of potassium fluoride, and 2 parts of monopotassium phosphate; (c) 100 gms. of monosodium phosphate, 5-10 gms. of manganese dioxide, and 1000 gms. of a mixture of sodium chloride, potassium chloride, and lithium fluoride.
Patent GB-295697-A (GB)
Title: Improvements in pistons
IPC: F02F3/04
Filed: 1927-10-10
Abstract: 295,697. Nelson, A. L. Aug. 18, 1927, [Convention date]. P i s t o n s ; balancing laterally. - The lower edge of a piston skirt is formed internally with two diametrically opposite segmented flanges 19, which stiffen the skirt and facilitate machining. The invention is particularly applicable to an aluminium alloy &c. piston comprising a head 10 having depending webs 13 which carry the gudgeon-pin bosses 15 and are connected to a circular skirt portion 24 by horizontal segmental webs 21, slippers 16, 17, which extend upwards from the portion 24, being connected to one another and to the webs 13 by steel or other relatively inextensible struts 18. A slot 20 extends from the lower edge of the skirt into one of the slippers. The flanges 19, which are arranged below the gudgeonpin bosses, control the expansion of the lower edge of the skirt. Under the influence of expansion and contraction the slippers pivot about the ends of the struts 18, so that either the upper or the lower ends of the slippers make contact with the cylinder. The struts mav be connected either to the upper ends of the slippers or to an intermediate point. Specifications 268,399 and 287,123 are referred to.
Patent GB-478754-A (GB)
Title: An improved means of obtaining preset reaction in a multi-range radio receiver
IPC: H04B1/16
Filed: 1936-10-03
Abstract: 478,754. Wireless receiving-apparatus. COLE, Ltd., E. K., and BROOKE, H. A. Oct. 3, 1936, No. 26831. [Class 40 (v)] In a multi-range receiver uniformity of reaction on the short-wave range is effected by tuning the reaction circuit above and the anode circuit below the limit frequencies of the band and the wave-range switch changes the impedance of the feedback coupling on a second range for which range the output circuit includes an inductance to tune it to the lower limit of the second range. The inductance for tuning the output circuit on the short waverange is sufficiently small as to have negligible effect in the second range. The Figure shows an arrangement in which on the short waverange the reaction circuit is tuned by the valve capacity, the condenser C3 and the inductance 3a and the output circuit is tuned by the valve capacity, the condenser C4 and the inductance L1. On the medium waverange condenser C2 and inductance 3b and inductance L2 are used. In a modification, a third inductance is included in the anode circuit for the long wave-band, the condenser being connected to the junction of the second and third inductances for taking off reaction voltage for this wave-range. With this arrangement, two of the three coils in the anode circuit are tuned by preset condensers.
Patent GB-1318397-A (GB)
Title: Ozone-generating appliance
IPC: C01B13/11
Filed: 1970-06-03
Abstract: 1318397 Ozonizers DEGREMONT SOC GENERALE D'EPURATION ET D'ASSAINISSMENT 3 June 1970 [5 June 1969] 26859/70 Heading H5H An ozonizer comprises an outer tubular electrode 10 surrounding an open-ended dielectric tube 1 of e.g. glass coated internally with a metal to form an electrode 2. The ends 3 of dielectric tube 1 are uncoated. The outer electrode 10 is earthed whilst the inner electrode 2 is connected to a high voltage supply by means of a contact brush 7 engaging the metal coating. The brush 7 is carried by a metal rod 6 which passes freely through a passage 5 in an end cap 4. Cap 4 is provided with a resilient sealing ring 8 and with corrugations 9 to prevent flash over, A similar end cap may be provided for the same purpose at the other end of tube 1. The outer electrode 10 is water cooled and the inner electrode 2 is cooled by air flowing through it via passage 5. Air is admitted to discharge gap 12 in the direction of arrow A. In an alternative embodiment (Fig 3, not shown) two ozonizers similar to the above are placed in a chamber supplied with air and to ensure that the air flow is the same through the ozonizers each end cap extends across the entrance to the discharge gap. Air is admitted to the discharge gaps only through passages in the end caps. These end caps may serve to centre the dielectric tube 1 in the outer metal electrode (Fig. 4, not shown).
Patent GB-411009-A (GB)
Title: Improvements in and relating to the production of amino acids from materials containing keratin
IPC: C07D209/20
Filed: 1933-09-29
Abstract: Amino acids are obtained from substances containing keratin by heating with strontium oxide or hydroxide at over 100 DEG  C., with or without excess pressure, the strontium being subsequently precipitated with alkali carbonate and the solution neutralized by boric or phosphoric acid.  A high yield of cystine, tyrosine and tryptophane is referred to According to examples, hair substance is treated with strontium hydroxide with or without pressure, and the product further treated as described above.  German Specification 378,214 is referred to.
Patent GB-1175814-A (GB)
Title: Polyvinyl Chloride Compositions
Inventor: HOFFMAN VINCENT L
IPC: C08K5/103
Filed: 1968-06-06
Abstract: 1,175,814. Transparent PVC compositions. NORTON CO. 6 June, 1968 [26 June, 1967], No. 27037/68. Heading C3P. PVC articles which are to remain transparent while in contact with liquids, i.e. containers, milking inflations or tubes, having a wall thickness of at least 25 mils. are formed from material obtained by polymerizing a mixture of a major proportion of a PVC resin and at least 5% by wt. of the PVC of an acrylic or methacrylic ester of a polyhydric alcohol or a prepolymer thereof. The ester is a dimethacrylate of tri-, tetra- or poly-ethylene glycol or triethylene glycol diacrylate and is polymerized by milling the composition at 200- 300‹ F., preferably with benzoyl peroxide. Other ingredients which may be added are dioctyl phthalate, epoxidized soybean oil, mineral oil, and stearic acid.
Patent GB-246418-A (GB)
Title: Improvements in and relating to methods of manufacturing composite vehicle wheels
IPC: B60B9/22
Filed: 1925-10-28
Abstract: 246,418. Atwood, H. N. Oct. 28, 1925. Disc wheels. - A wheel of the type described in Specification 246,420 is formed in two sections 2, each section being made up of plies of veneer 3 alternating with plies 4 of soft uncured or semi-cured rubber or of rubbered fabric. After assemblage, each section is subjected to heat and pressure to dish the peripheral portions of the sections to the form shown, and to bond the plies. The plies 4, which project above the veneer plies, are then folded upon themselves and upon each other to form a shoulder 8 on each section 2. After a rubbered fabric facing sheet 9 has been applied to the outer face of each section and worked over the shoulder 8, the two sections are assembled face to face, soft uncured rubber filling 10 being placed as shown between the dished portions 5 of the sections. An inner tube 11 is also fitted in the chamber 6, and fillings 12 of soft uncured rubber are packed as shown between the tube 11 and the shoulders 8. Plies 13 of rubbered fabric are then placed over the shoulders 8 and the tube 6, and covered with a mass of soft rubber 14 to form the tread. The wheel is then vulcanized.
Patent GB-323193-A (GB)
Title: Improvements relating to universal couplings for shafts or the like
IPC: F16D3/16
Filed: 1928-09-21
Abstract: 323,193. Rusby, H., and Associated Electrical Industries, Ltd. Sept. 21, 1928. Universal couplings.-In couplings for connecting shafts and other rotary members and allowing tilting, axial, and other relative movements between them, of the kind comprising a transverse rockshaft journaled on one member and carrying arms universally jointed to the other member, as described in Specifications 239,342 and 275,731, the rockshaft 7 has two pairs of arms 12, between each of which are a rockshaft journal 9 and a ball-and-socket joint 14, in order to avoid bending-moments on the shaft 7. As applied to the quill-shaft 1 and axle 2 of an electric locomotive, the shaft 7 is inserted laterally through gaps 8 in bosses 4 on a roughly-rectangular flange 3 on the axle 2, split bearing-bushes 6 being inserted endwise, rotated into place, and secured by keys 10 and locking-means 11. The bosses 4 are shaped to allow movement of the arms 12, which carry on pins 13 the ball-joints 14, seating in a pair of links 15, similarly balljointed at 16 to pins 17 carried in arms 18 on the quill-shaft 1. The flange 3 has a balanceweight 19. Torque-resilient means may be incorporated, as described in the above prior Specifications. The coupling is enclosed in a casing 20, supported on flanges 22, 23 by spring members 21, which may be oil-tight or be supplemented by flexible washers. The bearings 6 may be lubricated by grooves 24 in the journals 9, to which oil is centrifugally fed. The bearings 14, 16 are centrifugally fed through passages 27 from cavities 26 in the links 15, each supplied at low speed by a pair of oppositely-facing scoops 25.
Patent GB-1460777-A (GB)
Title: Combined process for optical brightening and printing
IPC: D06L3/12
Filed: 1974-06-19
Abstract: 1460777 Combined process for optical brightening and printing CIBA-GEIGY AG 19 June 1974 [29 June 1973] 27207/74 Headings D1B and D1P In a combined process for optically brightening and printing organic fibre materials the material is dry cleaned and at least one optical brightener applied from an organic liquor. dried, then printed and finished by a heat treatment. At elevated temperatures, the dry cleaning facilitates shrinkage of the fibre materials. The materials treated include polyesters, polyamides, polyacrylonitriles, cellulose acetates, viscose, copper spun rayon, pre-beached cotton and mixed fabrics of polyester-cotton, polyester-viscose and polyamide-cotton. Drycleaning may take place using hydrophobic solvents e.g. hydrocarbons, halogenated aromatic- or aliphatic-hydrocarbons which may contain water to form an emulsion and the optical brightener is then applied wet-or-dry from a solution, emulsion or dispersion in one of the above solvents. The optical brightener may also be applied in the hydrophobic solvent mixed with a hydrophilic organic solvent e.g. aliphatic alcohols, ketones, ethers and acetals, tetrahydrofuran, glycerin- and glycol formals, diacetone alcohol, glycol derivatives, dimethylformamide, dimethylacetamide, phosphoric acid amides, pyrrolidones and urea compounds. When the optical brightener is applied from an emulsion an emulsifier of the formula where R is C 3 -C 16  alkyl and M is an alkali metal radical or an optionally substituted ammonium radical is added optionally with an ethylene oxide condensation product. The heat treatment may be dry heat or saturated or super heated steam.
Patent GB-1303736-A (GB)
IPC: E06B3/46
Filed: 1970-06-05
Abstract: 1303736 Sliding windows BOUSSOIS SOUCHON NEUVESEL 5 June 1970 [20 June 1969] 27250/70 Heading E1J A sliding window comprises at least two glass panes 6, 7 slidably mounted in grooves in a frame, e.g. of wood, the adjacent edges of each pair of panes 6, 7 having flanges 13, 14 each orientated at an oblique angle to the plane of the corresponding pane when in the closed position, so that the flanges 13, 14 bear against each other along their length and over a part of their widths, thus forming a leaktight closure. The flange may be formed integrally with the pane, as shown, or it may be formed separately and joined to the pane by a resilient sealing member. The flanges 13, 14 may have sealing strips interposed between them. In the case of horizontally sliding windows, the panes may run on overhead rails 35, 36 in the upper frame member 5 by means of rollers 33, 34. The rails 35, 36 are formed with notches 37, 38, 39, 40 down which the rollers 33, 34 run as the panes reach the closed position, so that the panes are given a downward motion away from each other to increase the pressure between the flanges 13, 14 and on the lower frame member to improve leak-tightness. In the case of a separate flange resiliently joined to the pane, the resilient seal may be in an unflexed state with the flange end pane in the same plane, and spring means are mounted on the frame to deflect the flanges together in the closed position.
Patent GB-732211-A (GB)
Title: Improved flotation process and heavy media therefor
IPC: B03B5/44
Filed: 1953-10-05
Abstract: Diamonds are separated from gangue by a sink and float process employing a heavy medium consisting of an aqueous suspension of powdered ferro-silicon and nickel having a specific gravity above 3.5.  Two flotation steps may be used, one at 2.8 to 3.2 s.g. removing lighter impurities from the diamond-containing material, the sink portion being reprocessed at 3.51 to 3.65 s.g. to float off the diamonds.  The ferro-silicon should preferably contain more than 15 per cent of silicon to avoid rusting.  The medium may contain 48 to 49 per cent ferro-silicon, 35 per cent nickel and the balance water.
Patent GB-419982-A (GB)
Title: Improvements in or relating to exercising apparatus
IPC: A63B69/06
Filed: 1933-10-04
Abstract: 419,982. Exercising - apparatus. LANDON, L. W., 51, Vicarage Road, King's Heath, Birmingham. Oct. 4, 1933, No. 27292. [Class 132 (i).] Rowing apparatus comprising a base frame upon which are a slidable seat and spring- anchored hand grips is characterized by a pair of separate foot rests hinged to the base frame so that they have an independent movement with the heel and toe action of the user upon the frame. As shown, a base 1, hinged at 4, comprises flat rails 2 braced by cross-pieces 3. To a cross-bar 5 are connected springs 6 having hand grips 7. Foot-plates 8 pivoted to the rails 2 have foot-straps 9. A spring 10 anchored to the front of the base 1 is connected to a seat 11 provided on the underside with guide bars and having studs 14 sliding on the rails 2. Forward stops 12 are provided for the seat 11. The exercise may take the normal rowing form, or may be obtained with the plates 8 flat on the rails 2 and an upward pull in a standing position on the hand grips 7.
Patent GB-213852-A (GB)
Title: Improvements in or relating to screw stopper devices for bottles and the like
IPC: B65D39/08
Filed: 1923-10-31
Abstract: 213,852. Tollemache's Breweries, Ltd., and Tollemache, D. A. Oct. 31, 1923. Plug stoppers, screw. - In a screw stopper device for bottles &c. in which a packing washer is wedged within the mouth of the bottle, the stopper is formed, between the lower part of the washer b and the commencement of the thread a, with an unthreaded portion c of substantial length and the bottle is correspondingly formed with an unthreaded portion e above its threaded portion d. Specifications 3285/83, 4467/86, and 16837/05 are referred to.
Patent GB-777565-A (GB)
Title: Process for the manufacture by the galvanoplastic method of parts and components subjected to static and thermal stresses, and particularly of moulds
IPC: C25D1/10
Filed: 1953-10-06
Abstract: 777,565. Making moulds for plastic articles. JONKE, R. and LINTNER, J. Oct. 6, 1953 [Oct. 7, 1952], No. 27344/53. Class 87(2). [Also in Groups XXII and XXXVI] Metal parts such as moulds having thin, e.g. <SP>1</SP>/ 16  in. to “ in. walls and likely to be subjected to static and thermal stresses e.g. in injection moulding of plastics, are strengthened by applying to them a system of metal reinforcing elements and coating both the parts and the reinforcing elements with an electrodeposit of suitable thickness. The metal parts may be formed wholly or in part by electrodeposition. As shown, Figs. 2, 3, 7, gutta-percha negatives 4, 4<SP>1</SP> of plaster casts of a bowl are electroplated with a layer 5, 5<SP>1</SP> of copper and conductive supports 6, 61 arranged on these layers are copper plated to form reinforcing ribs 7. To produce an even plating of the supports gutta-percha may be placed over the more readily accessible portions during a first plating step and removed for a second such step. The ribs are then smoothed and reamed away in the centre to form a concavity and the moulds are then fixed to covering plates 10, 10<SP>1</SP> for securing the moulds to the jaws of the press and provided with inlet and outlet channels 11, 11<SP>1</SP> for a cooling fluid e.g. water, the plate 10<SP>1</SP> being pierced to provide an inlet for an injection moulding plastic. In another embodiment, Fig. 14, for making moulds for plastic injection moulding of motorcar roofs a metal pattern sheet 21 treated to facilitate removal of the electrodeposits is laid on a flanged complementarily-shaped support of metal or wax or plaster which is rendered conductive, the contacting side of the pattern sheet being made insulating, and the whole is electroplated with copper in an acid bath. The flanged support is then removed, the plating varnished and the underside of the pattern is copper-plated. Conductive ribs are then applied to the plated assembly and copper plated. These ribs are pierced to form channels 29, 29<SP>1</SP> which extend across the moulds and are filled with a readily fusible metal e.g. Wood's metal or metallised wax, almost to the tops of the plated ribs. The whole is then copper plated to enclose the fusible metal and further conductive ribs are placed on the structure so produced so that after again plating the two halves of the mould may be secured to the jaws of the moulding press. The moulds are then pierced in line with the channels 29, 29<SP>1</SP> and the fusible metal is run out, leaving channels for cooling fluid, and the mould is cut along a horizontal plane thereby releasing the pattern if this is not removed earlier.