baber/WOPTO huggingface dataset:
Patent GB-1077989-A (GB)
Title: Process for preparing í¸-3-ketosteroids
IPC: A61K31/568
Filed: 1965-09-30
Abstract: D 4-3-Keto steroids having the partial structure for rings A and B <FORM:1077989/C2/1> in which Z represents an alkyl group or a hydroxymethyl group which may be etherified or esterified, are obtained by heating a 3,5-cyclosteroid having the partial structure for rings A and B <FORM:1077989/C2/2> in which X represents an alkyl group or a hydroxymethyl group which may be etherified or esterified, Y represents a hydroxy group, an etherified hydroxy group or an esterified hydroxy group or X and Y may jointly form a 6b ,19-oxido-linkage, with an alkyl sulphoxide, e.g. dimethyl sulphoxide, diethyl sulphoxide or tetramethylene sulphoxide. Preferably a catalyst such as a mineral acid, a Lewis acid, a tertiary amine addition salt, an organic acid, an organic radical reaction initiator, a halogen, or N-haloamide, is also present.
Patent GB-907230-A (GB)
Title: Process for producing cellular polyurethane elastomers
IPC: B05D1/02
Filed: 1958-12-24
Abstract: One mole equivalent weight of a polyether having terminal hydroxyl groups and a molecular weight of 750 to 10,000 and comprising an alkylene oxide adduct of a triol is reacted with 1,1 to 12 mole equivalent weights of an organic polyisocyanate having 2 to 3 isocyanato groups to form a moisture free liquid prepolymer which is reacted in an enclosed mixing zone with water, a polyether urethane, reaction catalyst and at least 0,25% relative to the prepolymer of a silicone oil of a viscosity of 10 to 1,000 centistokes at 25 DEG C., the resultant mixture being discharged from the mixing zone to another zone where foaming occurs.  Suitable components are listed and crosslinking agents may be included.  The preferred adduct is that from propylene oxide and glycerine.  Specification 870,119 is referred to.ALSO:One mole equivalent weight of a polyether having terminal hydroxyl groups and a molecular weight of 750 to 10,000 and comprising an alkylene oxide adduct of a triol is reacted with 1,1 to 12 mole equivalent weights of an organic polyisocyanate having 2 to 3 isocyanats groups to form a moisture free liquid prepolymer which is reacted in an enclosed mixing zone with water, a polyether urethane, reaction catalyst and at least 0,25% relative to the prepolymer of a silicone oil of a viscosity of 10 to 1000 centistokes at 25 DEG C, the resultant mixture being discharged from the mixing zone to another zone where foaming occurs.  Suitable components are listed and cross linking agents may be included.  The preferred adduct is that from propylene oxide and glycerine.  Specification 870,119 is referred to.
Patent GB-1449853-A (GB)
Title: Filters for liquids
IPC: B01D27/06
Filed: 1973-09-06
Abstract: 1449853 Oil filter GENERAL MOTORS Ltd 15 Aug 1974 [6 Sept 1973] 41970/73 Heading B1D An I.C. engine oil filter of the screw-on, integral housing type has a pleated paper filter element 12 with pleats individually sealed at both ends mounted on a perforate tube 14 which extends beyond the element at end 15 where sealing ring 16 seals between the element and housing end plate 3, the other end of the element receiving the dished centre 19 of a spring plate 17 whose arms 18 press the element upwards to compress ring 16. Ring 16 may have a radial flange overlying inlets 8 to act as a non-return valve. A pressureoperated by-pass valve may be mounted at either end of tube 14. End plate 3 is welded to annular disc 4 which is seamed to metal housing 1. The inner fold lines at the ends of filter element 12 are flattened at 23 (Fig. 4, not shown) to present continuous surfaces engaging shoulder 20 and ring 16. In manufacture, spring plate 17 receives adhesive on shoulder 20 and is dropped into the housing, followed by element 12 which is already mounted on tube 14. Circumferential bead 2 in the housing wall centres the element. The assembly then enters an oven to cure the resin impregnating element 12, ring 16 is applied to the projecting end of tube 14 and end plate 3 fitted. The filter design facilitates manufacture on an automatic assembly line.
Patent GB-1085757-A (GB)
Title: Improvements in or relating to cutter picks
Inventor: PROCTOR SIDNEY ERNEST
IPC: E21C35/183
Filed: 1964-10-16
Abstract: 1,085,757. Mining picks. AUSTIN HOY & CO. Ltd. Oct. 6; 1965 [Oct. 16, 1964], No. 42423/64. Heading E1F. In a tipped cutter pick the junction between the tip and the shanked body of the pick involves a groove in the tip and a complementarily shaped rib on the body, the axis of the groove and the rib lying in the same plane as the line of action of the rib and extending substantially parallel to the longitudinal axis of the shank.
Patent GB-1403360-A (GB)
Title: Television camera arrangements
IPC: H04N7/01
Filed: 1971-09-11
Abstract: 1403360 Television EMI Ltd 4 Sept 1972 [11 Sept 1971] 42449/71 Heading H4F To increase the signal to noise ratio of the output signal from a pick-up tube undergoing interlaced scanning, the scanning beam of the tube is suppressed for alternate line periods, and the scanned pattern is displaced by one line width in alternate fields, so that in field 1 lines 1, 5, 9 ... are scanned and in field 2 lines 3, 7, 11 ... are scanned. A delay line is used to provide a signal during the non-scanned line periods. Alternatively the scanning beam may be suppressed during two line periods following every scanned line, the signal from the scanned line being repeated twice.
Patent GB-1458789-A (GB)
Title: Process for the preparation of 2-acetyl-3-methyl-1,3-butadiene
IPC: C07C45/66
Filed: 1975-10-17
Abstract: 1458789 2 - Acetyl - 3 - methyl - 1,3 - butadiene BAYER AG 17 Oct 1975 [29 Nov 1974 (2)] 42627/75 Heading C2C 2 - Acetyl - 3 - methyl - 1,3 - butadiene is prepared by decomposing 2 - methyl - 3 - hydroxymethylpent - 1 - en - 4 - one or a carboxylic ester thereof. The decomposition of the free hydroxy compound is preferably effected at 30- 350‹ C. in the presence of an acidic or basic catalyst, and the esters are preferably decomposed at 300-600‹ C. 2 - Methyl - 3 - hydroxymethylpent - 1 - en- 4-one is obtained from mesityl oxide and paraformaldehyde in the presence of 1,8-diazabicyclo[5,4-o]undec-7-ene and is converted to its benzoate and acetate esters.
Patent GB-1110717-A (GB)
Title: Alarm-bell mechanism for an alarm clock
IPC: G04B23/10
Filed: 1965-10-07
Abstract: 1,110,717. Ringer for alarm clock. FABRIQUE D'HORLOGERIE CHS. TISSOT ET FILS S.A. 7 Oct., 1965 [9 Oct., 1964; 8 Sept., 1965], No. 42652/65. Heading G5J. [Also in Division G3] When the alarm clock of which 1 is the bell rings, a spring attached to face cam 11 drives the hammer 3 through gear train 7, 6, 5 and escapement 15, the cam 11 and wheel 7 making less than a single turn during the ringing. Escapement 15 turns on pin 16 and has a stud 20 which strikes hammer 3 when output projection 18 is expelled from the teeth of wheel 5. Hammer 3 rises, swinging on its mount 4, to the dotted position and input projection 19 locks wheel 5 until the hammer returns under its own weight, strikes. stud 20, so unlocking wheel 5, and rings the bell. As cam 11 rotates, stud 30 on resilient rocker 24 follows U-shaped grooves 27, 28 and 28a, moving towards and away from the centre of the cam and the rocker rotates clockwise and anticlockwise on its mount 25. Spring 21 restricts the rise of the hammer when in position 21<SP>1</SP>, and causes its early return, but has no effect when in the position shown by full lines. Pins 26. move spring 21 between the two positions shown for it and so produce a variation in the rate at which hammer 3 strikes bell 1. When rod 2 is depressed the rocker is rotated clockwise, the abutment 33 moves the hammer to an inactive position by bearing on stud 23 and pins 26 move the spring 21 and its other arm 34 anticlockwise, so that the arm 34 presses on stud 35 and disengages the escapement. At the same time stud 30 is forced from groove 27, 28 or 28a to groove 29 and the mechanism idles until with continuing rotation of cam 11 stud 30 reaches the end of groove 29 and is forced by the weight of hammer 3, acting through rocker 24, to move along radial groove 31 towards the centre of the cam. Rewinding restores it to the position shown in Fig. 1. If rod 2 is displaced by a screw in its mount, prior to its depression, into the position shown by broken lines in Fig. 1 the clockwise movement of rocker 24 is restricted, so that stud 30 is unable to move into groove 28 and instead mounts its shoulder and drops into groove 27 again. In this way the ringing of the bell can be kept, if desired, to its initial slow speed. An alternative escapement (Figs. 4 and 5, not shown) for use in a ringing mechanism of this kind, in which the input and output projections are carried by separate components, articulated so as to be capable of moving through a limited angle relative to one another is described.
Patent GB-1328566-A (GB)
Title: Shutter mechanism
IPC: G03B9/16
Filed: 1970-09-07
Abstract: 1328566 Photographic camera shutters EASTMAN KODAK CO 7 Sept 1970 [6 Sept 1969] 42687/70 Heading G2A A shutter blade 8 uncovers an exposure aperture 6 when impacted by lever 34 and is releasably retained in an open position by a latch 46, some of the momentum of the blade being absorbed by a resilient stop 54 which stop performs at least one further camera function. As shown, the stop comprises flash sychronising contacts. Alternatively the blade is stopped by a blade return spring 13, a shutter release return spring, Fig.4 (not shown), or an auxiliary power switch in an electronic timing circuit. A closing blade 10 is held in an open position by a holding pawl 20 until released by an electromagnet 26. Movement of closing blade 10 to the covering position releases latch 46. Spring 13 thus moves blade 8, and also via pin 16 blade 10, back to their initial positions.
Patent GB-1020007-A (GB)
Title: Vehicle capable of operating as a ground effect machine and of entering into free flight
IPC: B60V1/00
Filed: 1962-11-13
Abstract: 1,020,007. Air cushion vehicles; aircraft. JOHN J. McMULLEN ASSOCIATES Inc. Nov. 13, 1962 [Nov. 15, 1961], No. 42969/62. Headings B7G, B7K and B7W. [Also in Division F2] A vehicle intended to operate under ground effect conditions as an air cushion vehicle and also in free flight as an aircraft comprises a hull or fuselage portion having the section shown in Fig. 3 and lateral side plates or wings which are swept back in plan with dihedral angles of about 45 degrees and have jet propulsion engines mounted at the wing-tips and elevons at the trailing edges. The fuselage portion has a trailing edge duct 100, a leading edge duct 110 and side ducts 120 from which air is discharged to form a supporting air cushion. A further duct system 130 (Fig. 4, not shown) supplies air jets which sub-divide the cushion to provide stability to the vehicle. Duct 110 comprises a main duct 150 having a nozzle 152 provided with vanes 154 to direct air between guide plates 153, 155 which may be adjusted by jacks 161 and 162 respectively. Plate 153 is formed with ducts 45 and 46 which direct a proportion of the air upwardly round the leading edge to combine with further air directed over the leading edge by vanes 43 to ensure that the stagnation point is below the leading edge of the hull. Duct 100 is circular in section and is formed with two nozzles 101 and 102 and in the position shown in Fig. 3 nozzle 102 is blanked-off and air issues from nozzle 101 to assist in forming and containing the air cushion. When the vehicle is operating as an aircraft the duct is rotated so that air issues from both nozzles to provide forward propulsion. The rear port of the hull is formed with boundary layer slots 52 through which air is drawn by a pump 55 to issue over the outer surface of duct 100. Each wing leading edge is formed with air intakes through which air is drawn by blowers to feed the ducts 100 and 101 and the duct system 130. This latter comprises on each side of the vehicle a transverse duct 133 which branches into ducts 131 and 132 each provided with turbine driven fans to compensate for pressure drops in the ducts. A further fore and aft duct 134 extends into further branches 135, 136 and all ducts 131-136 are formed with slots to form air curtains which sub-divide the cushion. The engines 92 are mounted on pivots 93 to enable the direction of thrust to be varied. An embodiment is described in which the side plates are arranged vertically with stub wings carrying elevons.
Patent GB-1198105-A (GB)
Title: Improvements in Sorting Gates for Sheep and the Like
Inventor: TOWNSHEND DESMOND CHARLES RICH
IPC: A01K1/00
Filed: 1967-09-22
Abstract: 1,198,105. Sorting gates. D. C. R. TOWNSHEND and A. A. COX. 22 Sept., 1967, No. 43239/67. Heading E1B. A sorting gate for sheep comprises a triangular tubular metal framework defining three openings, a first gate member 11 pivoted at one of its edges to one of the corners 4 and movable between opposite sides of the framework, and a second 'gate member 12 pivoted to the opposite edge of the member 11 and movable between a position where it lies flush with the first gate member, and is movable therewith, and a position (shown in Fig. 2) where it closes the third side of the framework. The first gate member is moved by handle 9 and fixed at either side by forked arm latch member 20 engaging the upper members 3 of the tubular framework, and the second member is moved by arm 14 and latched by a pin 17 engaging lugs 18 and 19.
Patent GB-981458-A (GB)
Title: Pyrrolo[2,3-d]pyrimidines
IPC: C07D487/04
Filed: 1961-12-04
Abstract: The invention comprises 5 - substituted pyrrolo-[2,3-d] pyrimidines wherein the 5-substituent is an alkyl group optionally bearing one or more cyano, carboxamido, alkoxycarbonyl, carboxy, acylamido or amino groups and optionally carrying on the C(2) and C(4) a halogen atom or an alkyl group or an hydroxy, mercapto or amino group or their alkyl-substituted derivatives; acid addition and quaternary ammonium salts of 5-(tertiary aminomethyl)-pyrrolo [2,3-d] pyrimidines and the preparation of 5-substituted pyrrolo [2,3-d] pyrimidines by converting a 5-unsubstituted compound into a Mannick base by reaction with formaldehyde and a secondary amine or its salt. The Mannich base reacts with a cyanide anion to give the 5-acetonitrile which in turn is hydrolysed to the amide and acid or reduced to the amine (5,7-diazatryptamine); with diethyl malonate to give the 5-methyl malonate ester; or with diethyl acetamido malonate to give the 5 - acetamido - methylmalonate which on hydrolysis and decarboxylation gives the amino propionic acid (5,7-diazo tryptophan); or may be hydrogenated to give the 5-methyl compound. The last compound may also be prepared by a modification of the process of Specification 812,366 employing 2-bromo-1,1-diethoxypropane in place of bromacetal. 4-Hydroxy - 5 - methyl - pyrrolo [2,3 - d] pyrimidine is converted to the 4-chloro-derivative by reaction with phosphonyl chloride.  4 - Amino - 5 - (2,2 - diethoxy - 1 - methylethyl)- 6 - hydroxy - 2 - mercapto - pyrimidine is prepared by reacting thiourea and ethyl 2-cyano-4,4-diethoxy-3-methyl-butyrate with sodium in ethanol.
Patent GB-1178251-A (GB)
Title: Improvements in and relating to Fluid Logic Elements.
Inventor: FOSTER KEITH
IPC: F15C3/00
Filed: 1966-09-29
Abstract: 1,178,251. Fluid switching devices. NATIONAL RESEARCH DEVELOPMENT CORP. 27 Dec., 1967 [29 Sept., 1966], No. 43619/66. Heading G4P. [Also in Division G3] An amplifying switching device has a first chamber 11 containing a movable foil 12 and being connected via a flow-control passage 20 to a second chamber 26 containing a flexible diaphragm 28 adapted to close the passage 20 upon application of fluid pressure to an inlet 32. With the passage 20 open, a fluid pressure stream, injected via an inlet 13, passes unimpeded under the foil and through an outlet 15, part of the stream passing, via passage 20, through outlet 31 until the pressure difference on both sides of the foil causes it to block the passage 20. When the passage 20 is closed by the diaphragm 28, the pressure build-up in the passage 20 causes the foil to block the outlet 15 and thus cuts off the fluid stream. A leakage path 21 (Fig. 1, not shown) may be provided further to assist unrestricted flow when the passage 20 is open. A pipe 29, connecting the passage 20 with the chamber 26, is further provided whose position is adjustable so that the switching time, depending upon the rate at which flow through the passage 20 is cut off by the diaphragm, can be varied.
Patent GB-1163272-A (GB)
Title: Improvements in or relating to Electric Switches
Inventor: BEDDOE STANLEY
IPC: H01H33/664
Filed: 1965-10-14
Abstract: 1,163,272. Vacuum switches. ENGLISH ELECTRIC CO. Ltd. 1 Nov., 1966 [14 Oct., 1965], No. 43696/65. Heading H1N. At least one of the contacts 14, 21 of a vacuum switch consists of a central member 23 and a concentric relatively movable annular member 25, at least two of the members 14, 23, 25 being movable relative to the envelope 11. The movable annular member 25 is sealed to the envelope by a bellows 27 and to the member 23 by a bellows 26. Each contact 14, 23 is formed with a central recess so that the arc is driven outwards on to the member 25 and means may be provided to rotate the arc. The contacts may be constructed as in Specification 1,163,271. The contact 23 may be of an alloy of zirconium, titanium or thorium with copper, silver or gold diffused into sintered tungsten or molybdenum as described in Specification 1,079,013, while the outer member 25 may be of an alloy of 99À7% copper and 0À3% zirconium as described in Specification 947,152 or of pure oxygen-free copper. In a modification the solid contact 14 is movable (Fig. 2, not shown) while the annular contact 25 is fixed. The contact 23 may be sealed direct to the housing by bellows (56) (Fig. 3, not shown). The two movable members are coupled to electromagnetic actuators 64, 67 (Fig. 4, not shown) which can be arranged concentrically (Fig. 5, not shown).
Patent GB-1378230-A (GB)
Title: Code-controlled typewriters
IPC: H04L17/30
Filed: 1972-09-21
Abstract: 1378230 Printers SIEMENS AG 21 Sept 1972 [11 Nov 1971] 43707/72 Heading G4H A printer has a type-carrier, e.g. drum, driven to the required position by a stepping  motor, also rotating a disc, pulses from which are counted in a main binary counter, the count being compared with a received code representing the required character, a sync mark on the disc setting the main counter to the code for a predetermined character, e.g. E. The requiredcharacter code is set into an input register for the comparison, and the main counter reading is supplied in parallel to the comparator via a test counter (merely acting as a store). Prior to positioning the type-carrier to print the character, the direction of rotation required for the shortest route is determined by feeding a fast clock train to the test counter and a timing counter until either the comparator shows equality or the test counter reaches half the number of type faces spaced around the drum circumference, the direction of the motor and of counting in the main counter being then chosen according to which occurred first. Arrival of a special-function code is detected by a decoder to block its own entry into the input register, perform the function, set the code for E into the input register, then after the shortest route determination (for E), the comparator is disabled and the motor is driven until the sync. mark is detected on the disc. This synchronizing is also done in response to some other events. The main and test counters each have a decoder to enter extra pulses into the counter in response to the counts corresponding to the codes for special-functions, to make it unnecessary to have gaps on the type drum.
Patent GB-957224-A (GB)
Title: Feedback analogue-to-digital converters
Inventor: FAYERS ALFRED AYTON
IPC: H03M1/00
Filed: 1961-12-07
Abstract: 957,224. Electric selective signalling. NATIONAL RESEARCH DEVELOPMENT CORPORATION. Dec. 7, 1962 [Dec. 7, 1961; March 8, 1962], Nos. 43830/61 and 8928/62. Heading G4H. A feedback analogue-to-digital converter has a transducer 1 the output of which controls a or the frequency of oscillator means producing electrical pulses of constant amplitude and width wherein the feedback signal to the transducer 1, used to restore it to the position corresponding to no input, is derived from an average voltage set up by the pulses. In an accelerometer, the transducer 1 has a member displaced in accordance with the acceleration to be measured and produces an A.C. signal, of amplitude proportional to the displacement and phase specifying the direction of the displacement, which is fed to a phase-sensitive demodulator 11. This produces two output signals in pushpull which are shaped at 13, 15 and modulate the frequencies of oscillators 17, 19 in opposite directions. The difference between these two frequencies is proportional to the acceleration and is determined by a counter 39 (details in Fig. 7, not shown) which adds pulses on one line and subtracts those on the other, and is reset to zero every second. The pulses from oscillators 17, 19 also trigger pulse generators 25, 27 (details in Figs. 2-3, not shown) which produce pulses of constant width which are given a constant height by limiters 29, 31. The standard pulses from the two limiters (positive-going and negative-going respectively) are added and smoothed in an adder and passive filter 35 to give an output proportional to the acceleration. This is used to energize a solenoid which resets the movable member of transducer 1 to zero. The pulses fed to the counter 39 may also be sent to another counter which is not reset to zero periodically and so indicates velocity. Figs. 4-6 show a single-channel modification without push-pull, there being only one oscillator 17 &c., the second input to the counter 39 being fixed frequency A.C., and the second input to the adder and passive filter 35 being earthed. The transducer 1 may alternatively measure pressure.
Patent GB-442297-A (GB)
Abstract: 442,297. Cabinets; tables. ROWLEY, A. J., and ROWLEY GALLERY OF DECORATIVE ART, Ltd., 140, Church Street, Kensington, London. Sept. 12, 1934, No. 26167. [Classes 52 (i) and 52 (iii)] [See also Group XVII] A portfolio 1 has a drop front 7, and has also pivoted &c. feet 8 which serve to tilt the portfolio when it is standing on a floor, and also, when the device is hanging upon a wall, serve to space the lower edge 4 away from it. To the part 6 is hinged a board 10, 11, upon which a picture may be displayed, and covered by a glazed frame secured on pins 12. This board may be nailed to or built into a wall. The lower edge 4 may be fitted with pivoted legs 13 to enable the portfolio to be maintained in an approximately horizontal position ; normally these are folded into a recess behind the edge 4. Additional display boards 10, 11 may be fitted.