baber/WOPTO huggingface dataset:
Patent GB-1438642-A (GB)
Title: Protection of ketomic groups during metal hydride reductions
IPC: C07J13/00
Filed: 1972-06-12
Abstract: 1438642 Protection of keto groups RESEARCH INSTITUTE FOR MEDICINE & CHEMISTRY Inc 12 June 1973 [12 June 1972] 27376/72 Heading C2U Ketonic groups are protected during metal hydride reductions (e.g. of ester, amide, nitro, cyano or other ketonic groups in the molecule) in the form of alkali metal enolates formed by treating the compound under oxygen-free conditions in a non-hydroxylic solvent with an alkali metal base soluble therein, said base being non-reducing under the reaction conditions. The enolisation is preferably effected at 0 C. or less (e.g. -78 C.) using a sodium or lithium hydride, amide, alkylamide, triarylmethyl, acetylide or bis-tertiary-silylamide in THF, dioxan, diglyme, benzene, toluene, triethylamine or N-methylpyrrolidine. Selective enolization of polyketonic substrates is possible by choice of reaction conditions. The reduction is preferably effected immediately after the enolization using, e.g. LiAIH 4  or as the metal hydride, and is followed by (i) destruction of any excess metal hydride, e.g. using NH 3 , C0 2 , H 2 O, EtOAc or an amine or alcohol, and (ii) protonation of the enolate to regenerate the ketonic group, e.g. by addition of water or aqueous HCI or H 2 SO 4 . The inventive process is said to be generally applicable in organic chemistry, but the specific disclosure is restricted to the selective reduction of the 11-oxo group to 11#-hydroxy in 3,11- dioxo and 3,11,20-trioxo steroids of the #<SP>4</SP>, #<SP>1,4</SP> and #<SP>4,17(20)</SP> pregnane series. A 21-(methyl oate) group may also be reduced to 21-hydroxy and the latter subsequently acetylated. A 17α,21-(butyl orthopropionate) group may subsequently be hydrolyzed to a 17α-propionyloxy- 21-hydroxy grouping. In addition to enolization of 3 and 20-oxo groups, reference is also made to 9(11)-enolization of II-oxo groups.
Patent GB-709303-A (GB)
Title: An electric reading lamp for use in a vehicle interior
Inventor: ABRAMS ARNOLD AARON
IPC: B60Q3/02
Filed: 1951-11-22
Abstract: 709,303. Overhead electric lamps for vehicle interiors. WILMOT-BREEDEN, Ltd. Nov. 5, 1952 [Nov. 22, 1951], No. 27397/51. Class 75 (4) An electric reading lamp, adapted to be mounted in a vehicle above a seat for two persons, comprises the combination of a hollow body part a adapted to be attached to either a luggage rack or the vehicle roof, and containing a lamp bulb m and a reflector q, and a cover b at the underside of the body part a provided with two light transmitting apertures and a pair of independently movable shutters r for controlling the light transmission through said apertures. The apertures are fitted with lenses d one of which directs a light beam vertically downward whilst the other provides an inclined beam, or both lenses may direct inclined beams. A bracket f is secured to an upward extension e of the cover b and has trunnions g engaging in slots h in a pair of lugs i formed on the body part a. Each slot h has upper inclined and lower vertical portions so that on moving the cover b laterally from the closed position the trunnions g move in the slots h to disengage a peg j at the opposite end of the cover from spring clips k on the body part a, and the cover b can then be swung downwardly about the trunnions g. Each shutter r, which is shaped to provide a fingerpiece s is held by the edges in a sheet metal frame t secured to the cover b and is pressed into contact with the outer face of the cover b by bowed spring skids u. The lamp bulb circuit is controlled by a switch adapted to be opened when both shutters d are closed, and to be closed when either or each of the shutters is opened.
Patent GB-247519-A (GB)
Title: Improvements in and relating to induction electric furnaces
IPC: H05B6/24
Filed: 1925-10-31
Abstract: 247,519. Ajax Electrothermic Corporation, (Assignees of Northrup, E. F.). Feb. 14, 1925, [Convention date]. Induction furnaces. - Furnaces dimensioned so that substantially all the energy induced in the charge is converted into heat before the centre of the charge is reached as described in Specification 243,694 are supplied with current from a rotary multi-polar generator of standard construction, the power factor being corrected by condensers in series or parallel. Suitable generators are described in the Specification. The furnace inductor may comprise two coils 17<3>, 17<4> connected in parallel and arranged as in Fig. 6 so that when the charge only occupies the lower portion of the crucible the coil 17<4> takes the major portion of the current. The. inductor comprises a flattened copper tube, the ratio between the lengths of the major and minor axes being greater than 8 and less than 20. Sets of three adjacent convolutions 25, Fig. 4, are electrically connected in multiple to form one " turn," insulation 23 being arranged between adjacent " turns " and a water inlet 21 and outlet 22 being provided for each " turn." The depth of each " turn " is greater than its radial dimension. In a modification the inductor is formed from a solid edgewound conductor and is air-cooled. The voltage of the furnace may be adjusted to the desired value by means of transformers. It is stated that as generator costs vary directly and condenser costs vary inversely with the frequency, a frequency should be chosen to give minimum total cost of generator and condenser and the furnace should be dimensioned accordingly. The Specification contains various formulae relating to the design of the furnace and costs of generators and condensers. The Specification as open to inspection under Sect. 91 (3) (a) describes the use of frequency changers. This subject-matter does not appear in the Specification as accepted. Reference has been directed by the Comptroller to Specification 119,220.
Patent GB-466399-A (GB)
Title: Improvements in tradesmen's hand carriages
IPC: B62B3/12
Filed: 1936-10-09
Abstract: 466,399. Hand trollies. LONGMAN, H. J. Oct. 9, 1936, No. 27456. [Class 108 (i)] A push cart such as a milkman's delivery trolley is provided with a main frame having a forwardly projecting shelf with wheeled supporting means. As shown the trolley comprises a main frame consisting of base frame members 3, 4 uprights 1, 2, roof members 7, 8 with wall panels and a pair of wheels 33. A forwardly projecting shelf 16 comprises side bars 18, 20 intermediate bars 22 and transverse bars 17, 23 together with a plate 24 to which is secured the swivelling pendant bracket 25 for the wheel 26. An interior frame for crates &c. comprises bars 13 front and rear bars 15 and upright 14 while a roof frame 32 for carrying bottles &c. is provided. Brake means 27 and handle 31 are provided.
Patent GB-662620-A (GB)
Title: Improvements in or relating to hydraulic reciprocating pumps
IPC: F04B1/053
Filed: 1949-10-26
Abstract: 662,620. Fluid-pressure servomotor control systems. HOBSON, Ltd., H.M., GREENLAND, L. S., and EDWARDS, T. Sept. 19, 1950. [Oct. 26, 1949] No. 27486/49. Class 135 [Also in Group XXVIII] In a vane-type servomotor of the kind described in Specification 656,970, for varying the stroke of a pump (see Group XXVIII), the manual control valve 107 is disposed in a sleeve 104, secured to the vane hub 100 which provides the follow up movement. The servomotor also adjusts the timing of the pump valve simultanously with the stroke.
Patent GB-1357909-A (GB)
Title: Friction clutch
IPC: F16D13/71
Filed: 1971-06-11
Abstract: 1357909 Friction clutches DR HERMANN E MULLER GmbH 11 June 1971 [13 June 1970] 27505/71 Heading F2C In a friction clutch wherein a driven disc 2 is clamped between a flywheel and a presser plate 3 by a main diaphragm spring 6 (or helical springs) having a sinusoidal (or linear ascending or descending) load characteristic, an auxiliary spring 21 is provided and has a load characteristic which when added to the main spring characteristic produces a horizontal load characteristic over the range of clutch wear so that the clutch engaging force and hence the clutch release pressure remain constant throughout the range of wear of the clutch. As shown, an auxiliary spring washer 21 acts between a support 22 fast with the clutch cover 5 and pins 24 fast with the presser plate 3 to oppose the force of the diaphragm spring 6. In Fig. 1 (not shown) the auxiliary spring washer is replaced by auxiliary leaf springs. In Fig. 5 (not shown) the auxiliary springs act in opposition to the diaphragm springs on the inner ends of the diaphragm spring spring fingers. Figs. 6-8 (not shown) are spring load characteristics.
Patent GB-630405-A (GB)
Title: Improvements in means for joining rolled steel beams for use on bridge and other constructional steel work
IPC: E04C3/04
Filed: 1947-10-14
Abstract: 630,405. Constructional ironwork . ,SPEIRS, A. J. SLEEMAN-. Oct. 14, 1947, No. 27536. [Class 20(ii)]  Beams 1 are joined by means of yokes 11 having side plates 6 between which tongues 2 on the ends of the beams are inserted and secured by bolts 3. In this way lattice or bowstring bridge girders are built up. The beams and joints are of uniform width and have a flat surface to enable the girders to be moved on rollers. The tongues 2 have slots fitting over the web 5 of the beam 1. The end of the beams may be reinforced by plates 8. Two girders side by side may be connected by transverse beams 17.
Patent GB-984271-A (GB)
Title: Improvements relating to programme controllers for automatic machines
Inventor: BOTHAM PETER WILLIAM
IPC: H01H43/08
Filed: 1960-08-10
Abstract: 984,271. Washing machines. HOOVER Ltd. Aug. 9, 1961 [Aug.10, 1960], No. 27766/60. Heading D1A. [Also in Division H2] A switch 11 (see Division H2) for controlling the programme of a washing machine by the insertion of a key plate 10 in any one of a number of different orientations as disclosed in Specifications 946,666 and 969,960 is provided with releasable locking means to prevent complete withdrawal of the key plate whilst permitting limited inserting and withdrawing movement between "operative" and "off" positions. A spring-urged latch pin (Fig. 8, not shown) carried on a bracket 63 extends through an aperture in the switch casing and engages a slot in plate 10 allowing limited on-off movement of the plate but preventing complete withdrawal. A plunger 71 accessible from opening 52, which is normally closed by a door not shown, may be depressed to withdraw the latch pin and permit removal of plate 10. It is stated that the controller may be associated with a time switch arranged so that when the key plate is moved to the "off" position the timer will advance to a position in which liquid is emptied from the machine and will thereafter advance to a starting position in readiness for the next cycle.
Patent GB-446339-A (GB)
Title: Improvements relating to vehicle brakes
IPC: F16D65/22
Filed: 1934-09-28
Abstract: 446,339. Adjusting brakes. ROWLAND, T. C. E., 49, Silhill Hall Road, Solihull, and PARKER, H., 71, Hazelhurst Road, King's Heath, Birmingham, both in Warwickshire. Sept. 28, 1934, No. 27780. [Class 103 (i)] In an internal brake, automatically adjusted by movement of the faces on the shoes engaged by the cam, the automatic adjustment takes place through reduction gear such as worm and worm wheel or skew gearing so that each adjustment is so small that the working of the brake is unaffected by temperature variation. The brake cam 5 engages a face 8 in each shoe, on a hollow pin 6 adapted to be moved to take up wear in the brake by a screw 10 turned by a worm gear 11, 12 operated by a ratchet wheel all mounted in the shoe, the ratchet wheel engaging with a rack, mounted on the brake anchor plate. When the brake is applied the ratchet wheel moves relatively to the rack and if wear has occurred, a tooth is taken up and the mechanism is operated on brake release to move the face 8 toward the cam. The head of the pin 6 has flat engaging flanges on the cam to prevent rotation of the pin. The spindle of the worm 12 is provided with a spring and also a clamping nut on its end which force a face on the spindle against a fixed face thus providing frictional locking means for the mechanism. The ratchet wheel comprises two staggered sets of teeth in order to give a finer adjustment.
Patent GB-909571-A (GB)
Title: Improvements in bend measuring devices with tube and rod bending machines
Inventor: DUPEN PETER JOHN
IPC: G01N3/20
Filed: 1958-08-29
Abstract: 909,571. Measuring angles. CHAMBERLAIN INDUSTRIES Ltd. June 2, 1959 [Aug. 29, 1958], No. 27832/58. Class 97 (3). [Also in Group XXII] A device for measuring the angle of bend imparted to rods or tubes in a bending machine comprises a guide 5 which is relatively fixed and a rod 3 which is slidable relatively thereto and provided with an abutment 2 for contacting the rod or tube 1 at the middle of the bend, the rod 3 having a scale 15. As applied to a machine of the type in which the rod or tube 1 is laid across abutments 9b and is bent by displacing a head between the abutments, the abutments 9b being secured by pins 9d engaging one of a plurality of pairs of holes 9c in a frame 9 supporting the movable head, the guide 5 is provided with spring-pressed or screw-pressed lugs engaging the edges of an opening 9a in the frame 9. The scale 15 is visible through a window 13 in guide 5 and co-operates with a scale of tube or rod diameters provided on the guide 5. The end 3a of rod 3 is bent through 180 degrees and threadedly receives a shank 2a carrying the abutment 2.
Patent GB-836515-A (GB)
Title: Improvements in or relating to variable area suspension-body flowmeters
IPC: G01R17/08
Filed: 1958-08-29
Abstract: 836,515. Electric indicating systems. ASKANIA-WERKE A.G., DELHEY, J., and HENNIG, J. Aug. 29,1958 [Aug. 30,19571, No. 27854/58. Class 40 (1). In a suspension-type flowmeter wherein a magnetic float 2 is positioned by fluid flowing upwards in a pipe 1 of increasing diameter, the position of the float is determined by a pivoted arm 4, one end of which follows the float magnetically, while the other end carries a metal vane 9 whose position is determined electrically. As shown, the vane is located centrally between two bolometer resistors 6, 6<1> connected in a Wheatstone bridge. When the fluid flow changes the vane is displaced and causes one resistor to heat up and the other to cool, whereby their resistances change correspondingly, the bridge is unbalanced and the unbalance current, amplified at 11, energizes a motor 12 to rotate a segment 5 attached to the bolometer resistor casing... The relationship between the angular movements of the segment 5 and the resistor casing is determined by a cam 16 to produce a linear relationship between angular movement of segment 5 and fluid flow, the former being indicated directly by a pointer 14 and telemetered by a transmitter 13 also driven by the motor 12.
Patent GB-151940-A (GB)
Title: Improvement in candy making machines
IPC: C13B50/02
Filed: 1920-10-01
Abstract: 151,940. Laskey, W. B. April 18, 1917, [Convention date]. E< >x t r u s i o n machines; heating apparatus. - A candy extrusion machine comprises a pair of alined cylinders 11, 12 fitted respectively with a common 28 connected by a common operating-rod 26 whereby the piston is withdrawn from one cylinder as material is extruded from the other; each cylinder being so mounted that it may be moved out of alinement for charging; and the whole machine being operable to bring either cylinder in a position to deliver the candy to a conveyer 94 and cutter 95. The rod 26 is screwed to engage a nut 25 housed between plates 20, 21 from which project sleeves 23, 24 with which the cylinders 11, 12 are adapted to aline, and to which they are secured by screw collars 49. Each cylinder is pivotally supported at 44, Fig. 4, and is furnished with an operating-handle 48, the pivots being relieved from strain, during turning, by guides 45, 46. The cylinders are furnished with heating-jackets 55, 56 through which water is forced by a pump 66 from a tank 61 heated by a steam coil 63. The nut 25 is fitted with a worm-wheel 41 engaging a worm 40 on a shaft 39 which is driven from a motor 31 through chain gearing 34, 37. When the contents of a cylinder have been completely extruded, the machine is automatically stopped by the engagement of the receding piston 27 with one of a pair of arms 67 connected to levers 69, 70 pivoted to a frame 71 and coupled by a member 73 to which are pivoted blocks 75 carrying a rod or latch 74, one end of which engages beneath and supports a lever 76 against the action of a spring 79; one end of the lever lies beneath the handle 82 of a pivoted switch 83 bridging contacts 85, 86 for the motor drive, and upon release of the latch 74 the spring 79 causes the lever to throw up the handle 82 and disengage the switch. The switch is then turned, by hand, to bridge a second pair of contacts 87, Fig. 1, whereby the motor 31 is driven in the reverse direction, a lever 10, Fig. 2, similar to the lever 76 causing the switch to be automatically disengaged at the completion of the extrusion. At the commencement of the movement of the piston, the framework 15 supporting the cylinders, which is rotatably supported by rollers 18 running on a track 19, is turned to bring the filled cylinder into position against the conveyer 94 by operating a lever 103 to move a clutch member 102 into engagement with a member 104 driven from the motor, thereby driving a shaft 100, which through bevel gears 99 drives a shaft 98 carrying a pinion 97 meshing with a semicircular rack 96.
Patent GB-425822-A (GB)
Title: Improvements in or relating to paving surfaces and blocks therefor
IPC: E01C5/16
Filed: 1934-09-29
Abstract: 425,822. Paving-blocks. LEES, A., 30, St. Ann Street, Manchester. Sept. 29, 1934, No. 27932. [Classes 87 (i) and 107] A paving surface is formed of interlocking blocks, preferably of cast metal, which are wider at the ends than in the centre, Fig. 3, and are laid in staggered rows as shown in Fig. 1. The upper surface is provided with intersecting V-grooves 7 parallel to the converging sides, leaving diamond shaped studs 5. The edge grooves 8 are of half-V section. The underside is formed with an inset continuous flange 9 having feet at the centre 15 and four corners; recesses 16 key with the cement or the like bed. The boundary blocks, Figs. 6 and 7, are made with a grooved triangular part 22<a> and a plain rectangular part 28 forming a gutter.
Patent GB-733090-A (GB)
Title: Steroid 4-hydroxy triketone
IPC: C07J5/00
Filed: 1952-11-06
Abstract: The invention comprises pregnane-4 : 17a -diol-3 : 11 : 20-trione and its preparation whereby a 3(4),17(20)-dioxide of a polyenol acylate of pregnane-3 : 11 : 20-trione is saponified in presence of an organic solvent.  The acylate groups are preferably derived from organic carboxylic acids containing from one to eight carbon atoms, and the saponifying agent is preferably an alkali metal hydroxide. In examples: (1) the 3(4) : 17(20)-dioxide of 3 : 11 : 20 - triacetoxy - 3 : 9(11) : 17(20) - pregnatriene in ethanol is treated with aqueous sodium hydroxide, acidified, solvent removed and 4 : 17a -dihydroxypregnane-3 : 11 : 20-trione isolated.  Other examples employing the corresponding 3 : 11 : 20 - tri - propionyloxy-, butyryloxy, other triacyloxy compounds and the 3 : 17(20)-dioxide of 3 : 20-diacetoxy-3 : 17(20)-pregnadien-11-one and other di-acyloxy compounds are given.  Specifications 731,701 and 733,089 are referred to.
Patent GB-320514-A (GB)
Title: Improvements in or relating to boxes
IPC: B65D43/26
Filed: 1928-10-01
Abstract: 320,514. Co-Operative Wholesale Society, Ltd., and Phillips, A. Oct. 1, 1928. Lids.-The lid c of a tin or box a having an upstanding portion a<1> and a rib or flange b, is provided with one or more cam pieces d, pivoted at d', having a continuously curved lower edge for prizing up the lid on turning in either direction, the pivot being positioned above the rim of the tin when the lid is in the closed position. Finger grips e are provided by bending over the tongues from the body of the piece. As a modification the finger piece may be hinged to the cam proper so that it may be turned, when out of use, to lie against the side of the lid. Reference has been directed by the Comptroller to Specifications 15306/12, 291,902 and 294,821.
Patent GB-257776-A (GB)
Title: A pocket case for cigars or cigarettes
IPC: A24F15/20
Filed: 1925-11-09
Abstract: 257,776. Simonik, F. Nov. 9, 1925. Lids; fittings, internal. - A pocketcase for cigars &c. comprises two similar relatively slidable members A, A<1> provided at their longitudinal edges with grooves 4 adapted to receive feathers 6 for guiding the members in their movement and springs 5 for automatically returning the members to the closed position. Parallel rib members 1 or grooves are provided in each of the members for preventing contact of adjacent cigars &c., and a partition may be provided to separate the contents of the two members. The partitions may also be grooved.
Patent GB-406788-A (GB)
Title: Manufacture of aminoalkylsulphonic acids and salts thereof
Filed: 1932-10-10
Abstract: Aminoalkylsulphonic acids are obtained by treating a hydroxyalkylsulphonic acid or a salt thereof in an autoclave with ammonia or an aliphatic amine.  Temperatures of 150--300 DEG  C. and pressures of up to 85 atmospheres are employed and a compound which is a good electrolyte of neutral or alkaline reaction may be added. According to examples: (1) sodium hydroxyethanesulphonate is treated with aqueous methylamine alone and in presence of caustic soda to give methyltamine; the same product is obtained with the use of hydroxyethane sulphonic acid and caustic potash; (2) sodium hydroxyethane sulphonate is treated with aqueous ethylamine, to give mainly the ethylaminoethanesulphonate with some ethylaminediethylsulphonate, with aqueous ammonia to give sodium aminoethanesulphonate and in presence of sodium sulphate to give sodium aminoethane- and imino-ethanesulphonate, or in presence of sodium sulphite or sodium carbonate to give a mixture of taurine and ditaurine sodium salts; (3) sodium hydroxypropanesulphonate and potassium hydroxyethane sulphate are treated with methylamine with and without secondary sodium phosphate respectively to give sodium methylaminopropanesulphonate and potassium methyltaurine respectively.  Other hydroxy alkylsulphonic acids specified are hydroxy butane sulphonic acid and hydroxypropanedisulphonic acid. Other aliphatic amines specified are butylamine and ethylenediamine and other electrolyte auxiliary agents are the chlorides of alkali or alkaline earth metals and potassium carbonate, sulphate and hydroxide, and calcium hydroxide.
Patent GB-1549202-A (GB)
Title: Retaining ring for a turbo generator rotor
IPC: H02K3/51
Filed: 1976-07-07
Abstract: In a winding cap (14) which consists of austenitic manganese steel and is shrunk onto a rotor (11) of a turbogenerator, at least a portion of the inwardly pointing surface (18) which rests on the rotor is provided with a coating of aluminium or of an aluminium alloy in order to reduce the burning damage by reducing the contact resistance between extensions of the groove wedges and the cap. Furthermore, an aluminium-magnesium alloy is more base at all temperatures than austenitic manganese steel, which is not always the case with aluminium, as a result of which the steel is never attacked in the event of electrochemical erosion. <IMAGE>
Patent GB-1046428-A (GB)
Title: Flotation machine for the separation of mineral mixtures present in a stream of pulp
IPC: B03D1/16
Filed: 1963-07-17
Abstract: 1,046,428. Froth floatation apparatus. KLOCKNER-HUMBOLOT-DEUTZ A.G. July 17, 1963 [July 31, 1962], No.28274/63. Heading B2H. The air inlet of a froth floatation machine comprises a pipe 14, 14<SP>1</SP>, surrounding an impeller drive shaft 12 and extending from above the liquid surface to just above a stator plate 15 of the impeller 18, 19, 20, the bottom end of the pipe 14<SP>1</SP> being shrouded by an annular chamber 17 into which the pulp to be processed is fed from pipe 5.