baber/WOPTO huggingface dataset:
Patent GB-850605-A (GB)
Title: Improvements in classifying or sorting devices
Inventor: SMITH GEOFFREY
IPC: B65G47/50
Filed: 1957-07-12
Abstract: 850,605. Sorting solid materials. POLYMARK Ltd. July 8, 1958 [July 12, 1957], No. 22126/57. Class 117 [Also in Groups XVIII and XXX] In apparatus for sorting laundry (see Group XXX) light articles are separated from heavier articles by causing the articles to impinge one after the other against a depending plate 17. Light articles are stopped by the plate and drop into a receptacle 18 whilst heavy articles swing the plate upwardly and pass to a container 19. Specifications 644,119 and 836,417 are referred to.
Patent GB-1310473-A (GB)
Title: Displacement measuring systems
IPC: G01D5/26
Filed: 1971-04-19
Abstract: 1310473 Photo-electric measurement of displacement SIEMENS A G 19 April 1971 [27 Feb 1970] 22187/71 Heading G1A [Also in Division H4] A displacement measuring system comprises a laser beam 1 defining a reference plane and two photo-electric detectors 3 positioned one on either side of this plane and connected in a differential amplifier circuit, the detectors being displaceable perpendicular to the plane in accordance with the amplifier output, to reduce any error signal to zero. In the embodiment shown, the laser beam is fanshaped and is modulated. The detector amplifiers 4 are tuned to the modulation frequency so as to suppress unwanted background variations. Filter 2 is also provided to remove background radiation. Amplifier outputs S 1  and S 2  are fed via amplifiers 5 and diodes 6 to the differential amplifier 7. Device R avoids saturation of the latter. When cells 3 are equally located with respect to the beam 1, no output is obtained from 7, but on occurrence of a displacement an output is obtained on 71 or 72 which is fed via Schmitt trigger 8, switching amplifier 9 and relay 20 or 21 to cause servomotor 11 to rotate in the direction required to null the outputs S 1 , S 2 . The displacement of the photo-cells 1 is monitored by potentiometer 15 connected to spindle 12 and by a pointer moving along a scale 16. Alternatively to spindle 12, a cable drive or other linkage may be used. Two dimensional displacement. Two systems at right angles to one another i.e. two perpendicular fanshaped laser beams and a cross shaped configuration of pairs of cells mounted on mutually perpendicularly moved slides, are provided for such measurement.
Patent GB-991570-A (GB)
Title: Improvements in or relating to rotary vacuum pumps
IPC: F04B39/16
Filed: 1962-06-08
Abstract: 991,570. Rotary vacuum pumps. LEYBOLD HOLDING A.G. June 8, 1962 [June 9, 1961], No. 22233/62. Heading F1F. [Also in Division B2] A rotary vacuum pump, Fig. 1, discharges air through an oil-sealed exhaust valve 10 into a separation chamber 11, where much of the oil entrained in the air settles out and then into one or more cyclone separators 12 (see Division B2).
Patent GB-800366-A (GB)
Title: Improvements relating to contact arrangements for electrical switchgear
Inventor: HUNT JOSEPH JAMES HOLMES
IPC: H01H1/20
Filed: 1954-07-30
Abstract: 800,366. Contact members for switches. SIMPLEX ELECTRIC CO., Ltd. July 20, 1955 [July 30, 1954], No. 22239/54. Class 38 (5). A bridging contact in an electric switch moves from the general direction in which the fixed contacts face and on abutting the fixed contacts moves transversely to effect a wiping action. As shown, a bridging contact 10 is mounted on a support 19 by a screw 21 and is biased by a spring 26. The screw has a frusto-conical part 24 whose larger diameter is the same as that of the hole in order to locate the bridge when the switch is open. One fixed contact 17 is slightly inclined so that after contact has been made and the bridging contact 10 has been disengaged from the part 24, the inclined face causes it to slide downwards, wiping the fixed contacts. The part 24 recentralizes the bridge on opening the switch. Alternative arrangements include (a) both fixed contacts being inclined, (b) the part 24 forming part of the support 19, (c) the transverse movement being assisted by the bridging contact moving along an inclined pin on the support 19. Specifications 767,112, 800,364 and 800,365 are referred to.
Patent GB-1030488-A (GB)
Title: Improvements in or relating to hydraulic brake systems
IPC: B60T11/26
Filed: 1964-05-29
Abstract: 1,030,488. Brake reservoir. H. TEVES, E.A. TEVES, and M. TAUSEND, [trading as ALFRED TEVES MASCHINENUND ARMATURENFABRIK KOMM.-GES.]. May 29, 1964 [June 6, 1963], No. 22320/64. Heading F2F. The working fluid in a reservoir of an hydraulic brake system is shielded from the atmosphere by a layer of a fluid, e.g. a silicone oil, which is of lower specific gravity, non- hygroscopic, and does not form an emulsion with, or chemically combine with, the working fluid. The shielding fluid is preferably of lower viscosity than the working fluid and is non- volatile. The two fluids are preferably degasified and mixed before filling the reservoir.
Patent GB-1490497-A (GB)
Title: Process for the preparation of copolymers of carbon monoxide and alpha-olefins
IPC: C08G67/02
Filed: 1976-05-28
Abstract: 1490497 Copolymers of carbon monoxide and alpha-olefins SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ BV 28 May 1976 [2 June 1975] 22416/76 Heading C3P A copolymer of carbon monoxide and a C 2 -C 8  alpha olefin is prepared by reacting CO and the alpha olefin under substantially anhydrous conditions, i.e. in a system containing less than 100 p.p.m. water in the presence of a catalyst comprising (a) anhydrous nickel (II) cyanide and/or (b) a complex nickel salt of the formula M 2 Ni(CN) 4  where M is R 4 N<SP>+</SP>, R 4 P<SP>+</SP>, R 4 As<SP>+</SP> or R 3 S<SP>+</SP> where R is acyl or C 3 -C 10  alkyl or cycloalkyl and a solvent which is hexafluoroisopropanol or metacresol or when the catalyst is (a) may also be cyclohexane. When the catalyst is (b) a strong acid may also be present. In the examples CO and ethylene are copolymerized to form alternating copolymers of Mn above 20,000 in the presence of (a) and cyclohexane or hexafluoroisopropanol or in the presence of bis(tetra-n-butyl ammonium)tetracyano nickelate and hexafluoroisopropanol and in some cases p-toluene sulphonic acid, trifluoroacetic acid or borontrifluoride etherate.
Patent GB-598154-A (GB)
Title: Improvements in or relating to media for use in heat exchange systems
IPC: C23F11/12
Filed: 1945-08-31
Abstract: 598,154. Anti-freezing compositions. VERNON, W. H. J., WORMWELL, F, STROUD, E. G., and ISON, H. C. K Aug. 31, 1945, No. 22493. [Class 29] [Also in Group XVIII] Aqueous solutions of benzoates such as sodium and potassium benzoate are used in heat exchange systems as freezing point depressants, corrosion inhibitors, and also to prevent the dislodging of pre-existing rust and scale. They may be used alone or in combination with known freezing point depressants such as ethylene glycol, glycerine or mixtures of these. 30 per cent., 40 per cent. and 50 per cent. solutions or benzoates may be used for depressing the freezing point, and a concentration of 1¢ per cent. by weight of benzoate is mentioned as suitable for inhibiting corrosion.
Patent GB-460978-A (GB)
Title: Improvements in and relating to cosmetic applicators
IPC: A45D40/30
Filed: 1935-08-09
Abstract: 460,978. Cosmetic applicators; stencils. JEFFERIS, A. Aug. 9, 1935, No. 22561. [Class 81 (ii)] [Also in Group XVI] A device for use in applying rouge to the face comprises a substantially triangular stencil plate 5, of celluloid, wood, cardboard, or like material, having a straight side 8 and recesses 10 in the other sides serving as finger holds. The stencil aperture 6 is widest near the side 8 and is preferably triangular in shape. The edges and corners are preferably rounded off.
Patent GB-421958-A (GB)
Title: Improvements relating to hard soldering mixtures and hard soldering processes
IPC: B23K35/34
Filed: 1934-08-02
Abstract: 421,958. Soldering. LITTLEDALE, H. A. P., Crabtree, Streatley-on-Thames. Aug. 2, 1934, No. 22564. Addition to 415,181. [Class 83 (iv)] In hard soldering by the use of a composition consisting of a reducible oxide or salt of one or more metals and elemental or combined carbon to reduce the oxide or salt into the metallic state as described in the parent Specification, the composition is made up in liquid form with the aid of aqueous ammonia instead of with water. It is stated to be particularly useful when the metallic compound consists of copper hydrate.
Patent GB-337348-A (GB)
Title: Improved method of treating activated charcoals
IPC: C01B31/08
Filed: 1929-07-23
Abstract: 337,348. Lander, C. H., Sinnatt, F. S., King, J. G., and Bakes, W. E. July 23, 1929. Carbon.-Active carbon which has been employed for the adsorption of sulphur compounds, e.g. hydrogen sulphide and carbon disulphide is reactivated by treatment in a heated condition with a volatile basic substance. The basic substance may be ammonia or bodies such as aniline, pyridine and quinoline may be used. The basic substance is added to superheated steam with a small proportion of air and passed through the activated carbon in the purifying apparatus in the reverse direction to that traversed by the gases to be purified.
Patent GB-840870-A (GB)
Title: Improvements in or relating to insulin preparations
Inventor: SCHLICHTKRULL JORGEN
IPC: C07K14/625
Filed: 1958-07-15
Abstract: A quick-acting insulin preparation is prepared by dissolving insulin derived from pig pancreas in an aqueous injectable medium having or being given a pH value of between 7 and 8.  A solution of a compound of one or more metals that are prerequisite to the crystallization of insulin, i.e. zinc, cobalt, nickel or cadmium may be added providing the total metal content of the solution does not exceed about 13 X A X 10-13 milli equivalents per litre, A being the number of international units of insulin per millilitic.  Buffering agents, for example, phosphate, citrate, acetate, borate, maleate, diethyl barbiturate and glycerol buffers may also be present.  If the buffer used is capable of forming complexes with the metal ions present, the amount of metal compound added may exceed the above stated amount providing the free metal ions in solution do not exceed the limit. An example given is the preparation of an 0.02M aqueous solution of sodium acetate containing per litre 1.74 gms. (40,000 international units) of crystalline insulin derived from pig pancreas and containing about 0.7% zinc, 2 ml. N hydrochloric acid, 1 gm. methyl-p-hydroxybenzoate, 1.4% by weight NaCl, the pH being adjusted to 7.3 to 7.5 with sodium hydroxide.
Patent GB-480259-A (GB)
Title: Improvements in concrete road-construction
IPC: E01C9/00
Filed: 1936-08-18
Abstract: 480,259. Concrete roads; blocks. HARTIGAN, G. F. X. Aug. 18, 1936, No. 22752. [Classes 20 (iv) and 87 (i)] A method of constructing a concrete road or floor consists in dividing the road into a number of bays by means of preformed members A, Fig. 7, of concrete or like material, and subsequently filling the bays with concrete which is then tamped. The members A have recesses B, or are otherwise shaped, so that they key with the concrete and may be coated on both sides with bitumen or like substance to allow for the expansion and contraction of the concrete. The members A, in the form shown in Fig. 1, have recesses B on one side alternating with similar recesses on the other side. Holes F are provided for the reception of the reinforcing rods G. In a modification, the members are formed with a number of transverse openings which, prior to the introduction of the concrete into the bays, are closed by sheets of metal, asbestos, or other material. The filling sheets are coated with a bituminous paint and are formed with openings for the reception of the reinforcing rods G. In a further modification the members are provided with tongues and recesses for keying with the concrete.
Patent GB-892078-A (GB)
Title: New steroid compounds and processes for their preparation
IPC: C07J75/00
Filed: 1960-06-29
Abstract: The invention comprises a compound having the formula <FORM:0892078/IV (b)/1> in which R1 is = O, = H(OH), or = H(OAc), the -OH or -OAc groups being a -orientated, and R2 and R3, which may be the same or different, are -H or -Ac, where -Ac represents an acyl residue derived from an aliphatic carboxylic acid having not more than 6 carbon atoms and a process for the preparation thereof, which includes the steps of treating an 18,20b -epoxy-5b -pregnan-11-one having the formula <FORM:0892078/IV (b)/2> (in which R4 is =O or =H(OAc), where OAc is and a -orientated acyloxy radical derived from an aliphatic carboxylic acid having from 1 to 6 carbon atoms) with zinc chloride in solution in acetic anhydride, and after isolation of the product thus obtained reacting the same with an alkali to yield an 18,20-dioxygenated 5b -pregnan-11-one having the formula <FORM:0892078/IV (b)/3> where R4 is =O or =H(OH), the OH group in the latter case being a -orientated.  Illustrative products of the invention are 3a ,18,20b -trihydroxy - 5b  - pregnan - 11 - one, 3a ,18,20b  - triacetoxy - 5b  - pregnan - 11 - one, 18,20b  - dihydroxy - 5b  - pregna - 3,11 - dione and 18,20b -diacetoxy-5b -pregna-3,11-dione.
Patent GB-961158-A (GB)
Title: Improvements in or relating to mulivibrator circuits and compound semiconductor bodies therefor
IPC: H01L25/07
Filed: 1960-06-30
Abstract: 961,158. Assemblies for telecommunications etc.; semi-conductor devices &c. GENERAL PRECISION Inc. June 30, 1960 [July 2, 1959], No. 22873/60. Headings H1K and H1R. [Also in Division H3] A semi-conductor structure for a monostable multivibrator (see Division H3) comprises at least eleven layers in series of which four (as shown the fourth to seventh) form a 4-layer breakdown diode or triode, another three (as shown, the twelfth to the fourteenth) form a transistor, a further two form a diode and the remaining two are conducting layers forming ohmic contacts with the adjacent layers and serving to connect the diode, transistor and 4- layer device together. The device shown also includes a second 2-layer diode. In alternative structures (Fig. 5, not shown) the layers are complementary to those in Fig. 4 and the two diodes are together at the top of the structure.
Patent GB-658457-A (GB)
Title: Apparatus for timing the cooking of articles of food
IPC: A47J29/04
Filed: 1949-12-02
Abstract: 658,457. Temperature-responsive actuating-elements. MILTON, L. M. Dec. 2, 1949, No. 22917. [Class 64(ii)] [Also in Group VI] Eggs &c. 21 placed on an annular tray 17 are lifted above the cooking water in a receptacle 20 after a predetermined cooking period by means of the expanding air in a hollow base 10 the air forcing upwards a piston 14 in a cylinder 11 co-axial and integral with the base 10. The handle 19 by which the device is placed in the cooking water secures the egg tray 17 to the piston rod 13 by the upper part of the extension sleeve 18 of the tray. The base 10 has insulation 15 which fixes the cooking time. In a modification, Fig. 3, the air in a hollow base 39 eventually forces the base free from a fixed stopper 41 whereby the base can then float up to lift the egg 21 out of the water. The base slides on guides 36. The base is heat insulated to determine the cooking time. The cooking time can be adjusted by an insulating sleeve 42, Fig. 4, exposed to the water and slidable on the pillar cylinder 11 whereby pressure is built up on the back of the piston to lengthen the cooking time or vice versa. In another adjustable timer, Fig. 5, (not shown) the rate of heat transference to the air acting on the bottom of the piston is varied by a sliding insulated pillar 25 (not shown). In a further modification, Fig. 6, the timing is varied by adjusting the nuts 51 of tension springs 49 whereby the rise of the piston rod 13 can be delayed by means of ramps 45 thereon engaging with pivoted straps 46 the position of which is adjusted by nuts 51 so that eventually the ramps 45 force the straps 46 outwards until clear of the ends of 45 and so allow the piston to shoot up. The piston carries wire 52 bent into lower loops, (not shown), to carry the eggs. The chamber containing air for forcing up the piston may alternatively contain water or other liquid some of which is evaporated to produce steam or other vapour pressure acting to lift the piston.
Patent GB-1159444-A (GB)
Title: Improvements in Fire Hose
Inventor: WALLACE THOMAS DEREK
IPC: F16L11/02
Filed: 1967-05-17
Abstract: 1,159,444. Hoses. GEORGE ANGUS & CO. Ltd. 8 May, 1968 [17 May, 1967], No. 22972/67. Heading F2P. A fire hose comprises a woven textile jacket and a thin tubular lining which is bonded to the jacket and which is made of an elastic thermoplastic material constituted by a block copolymer of two monomers, one of which is flexible and one of which is rigid, so that the block copolymer exhibits elastic properties similar to rubber. The block copolymer may be a styrenebutadiene block copolymer and to increase resistance to weathering, up to 10% by weight of another polymer such as polyethylene or polyurethane may be included in the lining material. The lining, which may be bonded to the jacket by an adhesive formed by the material of the lining, may also include carbon black or other pigment, an antioxidant and an anti-ozonant. The hose jacket may be provided with an external coating of the same or dissimilar polymer, e.g. polyvinyl chloride. The hose is made by introducing the previously extruded lining tube into the jacket, expanding the lining tube by internal air pressure, and heating with a hot air blast in an air-circulating oven. Alternatively the hose lining may be formed by the extrusion methods disclosed in Specifications 856,955 or 977,799.
Patent GB-681844-A (GB)
Title: An improved goggle valve
IPC: F16K3/10
Filed: 1949-09-07
Abstract: 681,844. Valves. MILES & PARTNERS (LONDON), Ltd., J., and HOOKHAM, G. Sept. 7, 1949, No. 23216/49. Class 135. A goggle valve controlling the flow of fluid through a conduit 10 comprises a valve plate 17 carried on a pivot pin 18 and movable transversely between seats 15, 16 secured to short pipes 12, B arranged in the run together with an expansion joint 13 and a further short pipe A. Springs 36 in two-part boxes 37, 38 spaced equally around the valve urge the seat 15 to nip the plate 17 between it and the seat 16. To permit transverse movement of the plate cylinders 42 spaced around the valve in alignment with the boxes are supplied with pressure liquid through pipes 48 to urge pistons 41 having two-part rods 44b, 44c to move the seat 15 away from the plate 17. To permit the removal of one of the piston-cylinder assemblies without disturbing any of the others, the part 44b which is separate from the piston is screwed into the part 44c until a spigot 52 thereon is removable from a recess 51 in a plate 40 mounting the seat 15, whence the rods 44b, 44c may be removed. The pipe 48 and an outlet pipe 49 are then disconnected and bolts 55 unscrewed to permit the transverse removal of a ring 53 and the withdrawal through a hole in the backplate 29 of the piston and cylinder. Specification 681,845 is referred to.
Patent GB-615797-A (GB)
Title: Improvements relating to toggle release mechanisms applicable notably to electrical circuit breakers
IPC: H01H71/10
Filed: 1946-08-06
Abstract: 615,797. Toggle linkages. ETABLISSEMENTS MERLIN & GERIN. Aug. 6, 1946, No. 23230. Convention date, Oct. 12, 1942. [Class 80 (iii)] [Also in Group XXXVII] A circuit-breaker releasing mechanism immune from operation by shock has an underset toggle of two pivoted links 1, 2. A cranked lever 5 and a lock 6 with its operating arm 7 and balance weight 8 are pivoted on the lower link 2. When the circuit-breaker is closed, the lip 4 of the link 1 is located in a recess 15 in the cranked lever 5 which is immobilized by the lock 6 as shown in Fig. 2. When the arm 7 is moved in the direction of the arrow F, the lock 6 turns and releases the cranked lever 5, which allows the linkage to collapse into the position shown in Fig. 3 to open the circuitbreaker. A cam 9 is formed on link 1 to prevent the accidental locking of the cranked lever when the circuit-breaker is open.
Patent GB-1458093-A (GB)
Title: Devices for pre-vaporising liquid fuelp
IPC: F23R3/32
Filed: 1974-05-24
Abstract: 1458093 Gas-turbine combustion chambers SOC NATIONALE D'ETUDE ET DE CONSTRUCTION DE MOTEURS D'AVIATION 24 May 1974 23262/74 Heading F1L [Also in Division F4]  A T-shaped vaporizer for liquid fuel in a gasturbine engine combustion chamber is provided with a series of transversely extending baffles 25a- 25m and preferably with a diaphragm 26 in the main limit of the T in the region in which the branch "arms" are joined. Dimensions are given for the projections together with enhanced vaporizing data.
Patent GB-876739-A (GB)
Title: An improved single revolution clutch
Inventor: THOMSON KENNETH RICHARD
IPC: F16D41/02
Filed: 1958-07-21
Abstract: 876,739. Gearing for stopping and starting machinery; friction clutches. THRISSELL ENGINEERING CO. Ltd. July 21, 1959 [July 21, 1958], No. 23329/58. Class 80 (2). A shaft 1 drives to a surrounding driven sleeve 18 through a one-revolution clutch comprising rollers 4 mounted in a cage 7 and engaging between flats 5, on a driven hub 6 fast with the sleeve, and the inner periphery of a drum 2 keyed to the shaft, an arm 10 fast with the cage being connected by toggle links 11,12 pivoting at 14, 39, 16C to an arm 16 secured on the driven sleeve. A tension spring 13 connected between the arm 10 fast with the cage 7 and the arm 16 fast with the driven sleeve 18 tends to collapse the toggle links 11, 12, so that their common pivot point 39 is forced radially outwards and simultaneously the cage is turned to wedge the rollers 4 between the hub 6 and the drum 2 for clutch engagement. A stop 20 is formed with a cam surface 31 and lies in the path of the projecting toggle links 11, 12 as the clutch rotates, the toggle links coacting with the cam surface and being pushed radially inwards against the bias of the spring 13 to turn the cage 7 relatively to the hub 6, so that the rollers 4 are forced out of their wedging position and the clutch is disengaged. An arm 16A fast with the arm 16 and the driven sleeve 18 engages a lockstop 38 on the stop 20 and prevents rotation of the driven sleeve 18 if for any reason the clutch should fail to disengage, and a detent roller 32 on an arm 35 pivoting at 36 is biased by a spring 37 to engage a recess 33 in a disc 34 secured to the driven sleeve which is thus held from rotation. To re-engage the clutch, a pulse of current is fed through a solenoid 30 to attract an armature 29 and turn a bell-crank lever 28 about its fulcrum 27, thus withdrawing a detent 26 from engagement with the stop 20, which pivots on links 23, so that the spring 13 can collapse the toggle links 11, 12 and push the stop 20 rightwards of Fig. 1 against the bias of a relatively light spring 25, simultaneously engaging the clutch. As soon as the rotation of the driven clutch sleeve 18 has carried the toggle links 11, 12 clear of the cam surface 31, the light spring 25 pulls the stop 20 leftwards of Fig. 1 back to the position shown and the force of gravity turns the bell-crank lever 28 to reengage the detent 26 behind the stop, so that the cam surface 31 is held fast for engagement by the toggle links 11, 12 again with consequential clutch disengagement.