baber/WOPTO huggingface dataset:
Patent GB-900259-A (GB)
Title: Improvements in and relating to voltage regulation and current limitation circuits
IPC: G05F1/38
Filed: 1960-05-02
Abstract: 900,259. Automatic voltage control systems. FELTEN & GUILLEAUME FERNMELDEANLAGEN G.m.b.H. May 2, 1960 [May 2, 1959], No. 15365/60. Class 38 (4). In an automatic voltage control and current limitation system for a transductor controlled rectifier arrangement employing a transistorized differential amplifier device, a Zener diode is used to produce a constant reference voltage and the emitter-collector path of a transistor controlled by a direct voltage derived from the load current is connected in parallel with the Zener diode. As shown, control windings 8, 9 of a transductor, not shown, are energized from the output voltage through the emitter-collector paths of transistors 1, 2 and a common resistor 4. The base electrode of transistor 1 is connected to a tapping of a voltage divider 5, 6 across the output voltage and the base electrode of transistor 2 is connected to a junction of a Zener diode 3 with a resistor 7. At the desired output voltage the voltages at bases of the transistors are equal and the control windings 8, 9 are equally energized. When the output voltage rises the transistor 1 is biased so that the current in the control winding 8 decreases. The reduced voltage across the resistor 7 causes a reduction in the current through the resistor 4 to alter the bias to the transistor 2 so that the current through the control winding 9 is also reduced, so tending to maintain the output voltage constant. In parallel with the Zener diode 3 is connected the emitter-collector path of a transistor 10 biased by the voltage drop across a resistor 11 carrying the output current. When the load current reaches a predetermined value the Zener diode current falls to zero and the bias to transistor 2 is determined by the collector voltage of the transistor 10 to limit the load current.
Patent GB-1036087-A (GB)
Title: Improvements in or relating to processes for the production of 16ª-propanolids of steroids
IPC: C07J75/00
Filed: 1963-04-18
Abstract: The invention comprises a process for producing the 16a -propanolid derivatives of unsaturated 16-keto-steroids by condensation in a Grignard reaction with a magnesium derivative of a 1,2-ketonide of a 4-halo-1,2-dihydroxy-butone, liberating the ketonide-protected hydroxy groups, oxidizing the product to effect simultaneous degradation and cyclization of the side-chain to form the corresponding 11,16b -epoxy - 11 - #x - hydroxyporpyl derivative which is either simultaneously or subsequently etherified at the 11-position, if desired oxidizing other nuclear substituents, transetherifying to form the corresponding 11#x, 11#x ether oxide, and oxidizing this to the desired product.
Patent GB-718818-A (GB)
Title: Improvements in or relating to circular looms
Inventor: LOW ROBERT NORRIE
IPC: D03D37/00
Filed: 1951-06-29
Abstract: 718,818. Circular looms. FAIRWEST (U.K.). Ltd. June 18. 1952 [June 29. 1951], No. 15430/51. Class 142(2) The shuttles are exposed by retaining all the healds in one extreme position and means are provided to prevent the recommencement of the shedding until the shuttles have reached the correct position for reentry into the shed. Upon operation of a hand lever or a weft stop-motion, tension on a cord 5 is released, a pulley 6 turns, and a trigger 7 engages a projection 13 on the pulley. The rotation of the pulley allows a spring-urged latch 3 to rise and engage a member 26 and retain the healds 12 in their lower position. A cam 10, on a shaft 18 geared to the picking mechanism, is set manually by a pointer 17 to the correct position for shuttle reentry into the shed. Tension is reapplied to the cord 5 and the loom restarted. Subsequent engagement of the cam 10 with a lever 9 causes the trigger 7 to be removed from the projection 13 and the latch 3 to release the healds and shedding to recommence.
Patent GB-379338-A (GB)
Title: Improvements in safety device for cycle accessories
IPC: B62J11/02
Filed: 1931-05-27
Abstract: 379,338. Supporting cycle lamps. RUDDER, G., 362, North Road, and SMITH, T. E., 4, Park Place, both in Cardiff. May 27, 1931, No. 15456. [Class 75 (iii).] A device for preventing the theft of a cycle lamp and other accessories comprises an arm a provided with a threaded aperture b to engage the threaded stem of the bolt c that clamps the saddle pin d in the frame tube e, the outer end of the arm a being provided with a bracket f, which receives the socket or clamp of a lamp g and has one or more holes h for the passage of a chain k fixed between a pair of lugs and adapted to be secured to the saddle by a padlock.
Patent GB-1460355-A (GB)
Title: Photographic and thermographic image recording and receiving materials
IPC: C07C313/00
Filed: 1974-04-08
Abstract: 1460355 Hydroxy-indane derivatives AGFAGEVAERT 8 April 1974 [16 April 1973] 15469/74 Heading C2C [Also in Division G2] 1,1,3,3 - Tetramethyl - 5 - hydroxyindane is prepared by pumping gaseous isobutylene for 1 hour at 150‹ C. into an autoclave containing 4-isopropylphenol in toluene and acid activated fuller's earth and stirring for 6 hours at 150‹ C. 1,1,3,3 - Tetramethyl - 5 - hydroxy - 6 - chloroindane is prepared similarly in a glass flask. 1,1 - Bis - (1,1,3,3 - tetramethyl - 5 - hydroxyindan - 6 - yl) isobutylidene is prepared by adding isobutyraldehyde at 120‹ C. to 1,1,3,3- tetramethyl - 5 - hydroxyindane and concentrated H 2 SO 4 , lowering the temperature to 80‹ C. during the addition, heating to 90‹ C. for 2 hours, boiling with benzene, water and sodium acetate and cooling. Bis-(1,1,3,3-tetramethyl-5- hydroxyindan - 6 - yl) thioether is prepared by stirring 1,1,3,3 - tetramethyl - 5 - hydroxyindane and sulphur dichloride in benzene at 50‹ C. for 3 hours and cooling. 1,1-Dimethyl-5- cyclopentyl - 6 - hydroxyindane is prepared by stirring 1,1 - dimethyl - 6 - hydroxyindane, ptoluenesulphonic acid and cyclopentene at 125‹ C. in an autoclave for 5 hours. 1,1-Dimethyl - 5,7 - dicyclopentyl - 6 - hydroxyindane is prepared by heating at 220‹ C. 1,1-dimethyl - 6- hydroxyindane, aluminium grit and mercury (II) chloride in an autoclave for 1 hour with stirring, cooling, releasing pressure, adding cyclopentane and stirring at 200‹ C. for 10 hours.
Patent GB-493473-A (GB)
Title: Improvements in and relating to cleansing tanks for washing or cleaning articles such as motor vehicle parts or the like
IPC: B60S3/00
Filed: 1937-06-05
Abstract: <PICT:0493473/III/1> An apparatus for cleansing metal articles such as parts of motor cars, consists of a tank 1 within which is supported an inner bath 6 having an open base, upon the flanged edges of which rests a sludge filter box 9, provided with a perforated lid. The sludge filter box has openings in the sides covered by removable frames of wire gauze and is readily removed from the inner bath for cleaning.  In operation, the articles are placed on the perforated lid, and are washed with paraffin drawn from a sump 20 by a pump 4 and forced through a pipe 25 which is preferably provided at its upper end with rotating spray jets.  The dirty paraffin passes through the filter box, which retains sludge and solid particles, to the sump 20.
Patent GB-801107-A (GB)
Title: Improvements in or relating to filler materials for rubber mixtures, rubber mixturesand products thereof
IPC: C08K3/34
Filed: 1956-05-18
Abstract: A composite accelerator-filler material for rubber comprises at least one mineral filler, e.g. a clay such as kaolin, and a substituted thiuram sulphide or polysulphide, e.g. tetramethyl or tetraethyl mono-, di- or tetrasulphide.  The substituted thiuram sulphide or polysulphide preferably comprises 0.2 to 0.6 per cent by weight of the filler mixture.  The mineral filler may be a high alumina clay in which the weight ratio of alumina to silica exceeds 0.85.
Patent GB-763176-A (GB)
Title: Improvements in or relating to the control of safety devices for the tools of machines for grinding and/or polishing glass
IPC: B24B7/24
Filed: 1954-05-26
Abstract: 763,176. Grinding and polishing glass. LES GLACERIES DE LA SAMBRE SOC. ANON. May 26, 1954 [May 27, 1953], No. 15615/54. Class 60. A method of controlling a tool' holder 1 in a machine for the simultaneous grinding or polishing of the two faces of a glass sheet consists in providing a stop 3 for the holder and utilizing the movement of the holder to control the position of the stop. The pressure of the tools on the glass is adjusted by admitting oil under pressure to the underside of a piston 8 connected by a rod 4 to the holder 1. The rod also carries the stop 3. which is slidably keyed thereto and in screw-threaded engagement with a toothed wheel 5 arranged to be rotated by a worm (not shown) connected to a motor 6. A stop 7 rigid with the rod 4 co-operates with the stop 3. As the progressive wear on the tools and the glass produces a slow downward movement of the holder 1 the stop 7 approaches the stop 3 and a boss 20 on a bar 19 actuated by a lever 22 approaches a switch 12 mounted on a fork 11 connected by a lever 17 and a link 18 to the stop 3. The switch 12 is closed before the stops 7 and 3 make contact to start the motor 6 which moves the stop 3 and hence the fork 11 downwardly until a switch 13 is operated by engagement with a second boss 21 to stop the motor 6 when the original clearance between the stops has been restored. In the event of breakage of the glass sheet, the holder 1 falls rapidly causing the boss 20 to actuate first the switch 12 and then a switch 14 to interrupt the supply to the motor 6 while the boss 21 opens a switch 15 to trip a relay 24. The latter closes contacts 25 to actuate a relay 26 for a contactor 27 which interrupts the supply to a pair of motors 28, 29 for driving the tools and balancing the holder and reverses the supply to the motor 6 so that the abutment 3 raises the holder 1 until the bar 19 opens a switch 30 to stop the motor 6. The switches described may also control the corresponding motors of the lower tool holder.
Patent GB-1364231-A (GB)
Title: N-/1-substituted-3-pyrrolidinyl/benzamides and thiobenzamides
IPC: C07D207/14
Filed: 1973-04-02
Abstract: 1364231 N - (1 - substituted - 3 - pyrrolidinyl) benzamides and thiobenzamides A H ROBINS CO Inc 2 April 1973 [3 April 1972 12 March 1973] 15645/73 Addition to 1281188 Heading C2C The invention comprises compounds having the general formula wherein R is cycloalkyl, phenyl or phenylalkyl, R<SP>1</SP> is hydrogen, C 1 -C 8  alkyl or phenyl, R<SP>2</SP> is halogen, alkyl, alkoxy, amino, nitro, mono- or di - alkylamino, mercaptomethyl, acetamido, sulphamoyl, cyano, hydroxy, benzloxy or trifluoromethyl, and n is 0 or an integer from 1 to 3; and wherein R is cycloalkyl, R<SP>1</SP> is hydrogen or alkyl, R<SP>2</SP> is nitro, amino, halogen, sulphamoyl or alkoxy, and n is 0 or an integer of 1 to 3. The compounds of Formula I may be prepared by reacting a compound of the formula with a compound of the formula when R<SP>2</SP> is not primary amino or acetamido, and optionally hydrogenating the product when R<SP>2</SP> is nitro to form the corresponding amino compound which may be acylated to form the acetamido compound. The compounds of Formula II may be prepared by reacting a compound of Formula I with P 2 S 5  and K 2 S or by reacting a compound of formula with sulphur and a compound of Formula III. The compounds of the invention exhibit antiemetic activity and may be administered alone or in admixture with conventional carriers or diluents orally or parenterally.
Patent GB-1422269-A (GB)
Title: Tester for testing the operation of a logic circuit having a plurality of different predetermined logic functions
IPC: G01R31/3193
Filed: 1973-04-02
Abstract: 1422269 Testing logic circuits WESTINGHOUSE ELECTRIC CORP 2 April 1973 [4 April 1972] 15688/73 Heading G1U A logic unit which can provide any one of a plurality of logic functions is tested by comparing its output with that of a logic simulator when both are fed with identical inputs, the simulator being programmable to provide a reference signal corresponding to the particular function provided by the unit under test. The unit provides an output when at least m out of n inputs are present, m and n being selectable and in the described example m = 1 or 2 and n = 1-4. The invention is applied to the testing of trip logic 21, Fig. 1, in the nuclear reactor monitoring system described in co-pending applications 15689/73 and 15690/73 (see Divisions G6 and H3-5). Sensors 24 provide signals to the logic 21 in two mutually redundant channels A, B via bi-stables 26 and isolating relays 16, 18 whenever an abnormal condition occurs. Logic 21 operates alarms and safety measures if the selected logic function is satisfied. The tester 34 is shown in more detail in Fig. 3. The values are m and n are indicated by grounding one of seven inputs from a selector switch (40), Fig. 2 (not shown). The particular selection is decoded by logic 52 which provides outputs X (representing m) and Y, Z (representing n). The outputs Y, Z are applied to logic 54 which allows switches 58 to decode the output bits of a six-stage counter (38) (Fig. 2) so as to provide all possible combinations (2<SP>n</SP>-1) of the logic unit inputs provided on output leads A, B, C, D. Output X is decoded by logic 56 to provide an appropriate output to coincidence detector 62 when m or more of the outputs A-D are present. The output of the unit under test is also applied to the detector 62. Any non- coincidence lights a "bad" lamp and stops the test by inhibiting switches 58. Logic 66 detects when all the n inputs of A-D are present signifying the end of the test run. The output therefrom extinguishes the test lamp and lights a "good" lamp of inhibit logic 54 also signifies the end of the test. Any malfunction in the trip logic 21 results in the "bad" lamp not being and a premature termination of the test run. The detailed circuitry of the tester (34) Fig. 5 (not shown) is so arranged that any malfunction of any component results in an incorrect sequence in the indication lamps provided ("good", "bad", testing, function) which can be easily detected by an operator.
Patent GB-529288-A (GB)
Title: Directional aerial arrays
IPC: G01S1/02
Filed: 1939-05-26
Abstract: 529,288. Directive wireless systems. STANDARD TELEPHONES & CABLES, Ltd. May 26, 1939, Nos. 15697 and 15698. Convention dates, June 14, 1938, and July 30, 1938. [Class 40 (v)] Two spaced aerials are energized by currents which are alternately made to lag and lead each other in order to produce " reversed-cardioid " fields of radiation which mark out one or more navigational courses. In Fig. 4 the aerials A1, A2 are spaced apart a half-wavelength and are energized through the crossed transmission line L, giving an initial dephasing of #. This is alternately changed to #+# and #-# by periodically inserting and short-circuiting the impedance Z in the aerial A1, to give the overlapping cardioid fields shown in Fig. 3. Since the current in Al is reduced by dephasing, the current in A2 is equalized by means of the impedances R1, R2. In a modification, dephasing impedances Z and compensating impedances R1, R2 are inserted in both aerials. Alternatively the additional dephasing may be produced by alternately inserting and short-circuiting an additional length of line in the feed-line to one or both of the aerials. The directions of and the angle between the two course lines oy, oyl may be varied by adjusting the spacing and phasing of the aerials, spacings of #/8 to # being possible ; more than two course lines can also be produced by such adjustment. The dipoles A1, A2 may be replaced by frame aerials or by directive arrays, e.g. a frame and open aerial, to produce sharper course-lines and to reduce the radiation in unwanted directions, e.g. the axis x x.
Patent GB-137242-A (GB)
Title: Improvements in apparatus for covering boxes or other articles
IPC: B65C9/22
Filed: 1919-06-24
Abstract: 137,242. Nasmith, J. W. June 24, 1919. Coating fabrics in long lengths.-In a machine for applying adhesive to paper and like bands to be wrapped round boxes &c., a single glueing- roller is used wherein a main band and one or two decorative border strips are united and leave the glueing-roller as a single band glued on its underside for application round the box &c. The main band A is led over the guide-roller 5 to the glueing-roller G, and the edging-strips 9 over the guide-roller 10. Above each edging-strip runs a narrow bowl C adjustable along the shaft B, so that its periphery presses partly on the margin of the edging-strip and partly on the surface of the glueing-roller, the adhesive thus picked up by the bowl C being spread over its whole surface by an obliquely-set spreader 16a and transferred to the upper margin of the edging-strip so as to secure the overlapping edge of the main band. The bowls C may be dispensed with, the spreaders 16<a> being adjustably mounted on arms 15, as shown in Fig. 5, so as to deflect adhesive from the glueing-roller G to the upper surface of the edging- strip. The guide-rollers &c. are mounted in arms S swinging in pivots 1, so that the guide-rollers &c., together with the main band and edgings, may be moved clear of the glueing-roller G when the machine is not in use. Specification 8263/11 is referred to.
Patent GB-566172-A (GB)
Title: Improvements in antenna systems for defining a blind approach path
IPC: G01S1/02
Filed: 1942-11-10
Abstract: 566,172. Directive wireless signalling. STANDARD TELEPHONES & CABLES, Ltd., and ARMSTRONG, L. J. HEATON-. Nov. 10, 1942, No. 15892. Addition to 562,853. Drawings to Specification. [Class 40 (v)] The parent Specification describes a transmitter for an equi-signal overlapping-beam guiding system comprising three linear antennae A, B, C, the outer antennµ being fed with currents of opposite phase and the centre antenna with currents having a phase angle of 90 degrees or less with respect to the current in A or C, the field being varied in direction by changing the relative phase of the centre and outer antennµ by means of a single make or break contact. According to the present invention, each outer antenna is replaced by a group of antennae, the current in the antennµ near the central antenna being greater than in those more remote, thereby increasing the sharpness of the beam. The change in phase is effected in the way described in the parent Specification.
Patent GB-305427-A (GB)
Title: Improvements in and relating to conduit systems
IPC: F15D1/04
Filed: 1928-05-31
Abstract: 305,427. Robertson, T. E., (Blizard, J.). May 31, 1928. Pneumatic conveyers and elevators. - In a conduit system in which flows a fluid carrying finely divided solid material in suspension, stratification of the solid material when passing round a bend B is prevented by providing a partition C, Fig. 2, or partitions, in the bend which is substantially parallel to the direction of flow. The partition may comprise a central tubular member D, Fig. 5, and diaphragm members E, E<1> extending from the tube to the conduit.
Patent GB-456643-A (GB)
Title: Improvements in or relating to continuously working mixing drums
IPC: B01F29/63
Filed: 1936-06-08
Abstract: 456,643. Mixing-drums. HUBERT, J., (trading as HUBERT & SIGMUND STAHLUND METALL WARENFABRIK), 14, Ferto utca, and GEZA, L., 40, Csaky utca, both in Budapest. June 8, 1936, No. 16038. [Class 86] A rotary mixing-drum divided into a number of chambers by inclined cross partitions fitted with apertures has means for varying the size of the apertures. The drum 1 is fed from a hopper 7 at one end and discharges at the other, and the apertures 9 in the partitions 3 are controlled by pivoted shutters 14. A pipe 12 projects into the drum for feeding additional ingredients.
Patent GB-839093-A (GB)
Title: Improvements in paper cutting machines
IPC: B26D1/08
Filed: 1958-05-19
Abstract: 839,093. Guillotine cutting machines. LAWSON CO. DIVISION OF MIEHLE-GOSSDEXTER Inc. May 19, 1958 [July 2, 1957], No. 16061/58. Class 31 (1). In a paper-cutting machine of the type having a knife bar pulled at both ends by means of respective pull bars for drawing the knife through a paper pile, each pull bar 15 is associated with a yoke member 40 connected to a crank-pin 15a which is carried by a crank-arm 15b rotated by a crank-shaft 15c, the yoke member carrying a microswitch 20 which is operable by means of an adjustable bolt 25 carried by a collar 50 adjustable on the screwthreaded end 32a of a socket 32 which secures the pull bar, pairs of dished spring washers 60 being mounted on the screw-threaded end 32a between the collar 50 and an end cap 44 secured to a yoke member, and the switch 20 being included in an electric circuit, Fig. 5 (not shown), so that when a pull bar is overloaded, the switch is operated by the bolt 25 to cutoff the supply of power to the pull bar. The electric circuit also includes means for cutting- off the supply of power to the knife when either pull bar is overloaded.
Patent GB-1106252-A (GB)
Title: Fluid flow control valve construction
Inventor: WORDEN DONALD ALLISON
IPC: G05D16/16
Filed: 1965-04-15
Abstract: 1,106,252. Fluid-pressure servomotor systems. MAROTTA VALVE CORPORATION. April 15, 1965, No.16214/65. Heading G3P. [Also in Division F2J A pressure-relief valve comprises a main closure 32 to control flow from an inlet 12 to an outlet 16 which is moved by an actuator 62 connected to a piston 66 under the control of a pilot valve 76. With a housing 10, piston 66 defines two chambers 70 and 91. Chamber 91 is connected with the inlet 12 via passageways 93 and 95 in the actuator 62, and chamber 70 is connected with the inlet 12 via passageways 82, 84, 86, 88 and pilot valve 76. Valve 76 comprises an adjustably spring-loaded piston (112) Fig. 2 (not shown) which defines with a housing (102) a chamber which is connected with the chamber 70 through a passageway (128). Piston (112) includes an exhaust passageway (132), (134) controlled by a closure member (136). Closure (136) is mounted on a common spindle with closure (144) which controls flow from the passage (88) to the chamber 70 via chamber (150), passageway (152) and through members (154) and (140). The pistons 66 and (112) and the closure element 32 are coated with a layer of plastics material e.g. nylon.