baber/WOPTO huggingface dataset:
Patent GB-821673-A (GB)
Title: Improvements in television apparatus including a photoconductive camera tube
IPC: H04N5/235
Filed: 1957-03-29
Abstract: 821,673. Television pick-up tubes. FERNSEH G.m.b.H. March 29, 1957 [March 31, 1956], No. 10333/57. Class 39(1). [Also in Groups XL(b) and XL(c)] Relates to television apparatus employing a camera tube of the photoconductive type, such as the vidicon, and is concerned with the elimination of a defect which manifests itself as a smearing of moving objects and is in part due to a failure of the scanning beam to replace the target change over areas of strong illumination. In accordance with the invention, if the picture signals developed by the camera exceed a predetermined maximum, thereby indicating excessive illumination of the target, a control voltage proportional to the excess of the signals over said magnitude is developed and employed either to reduce the bias voltage applied to the target signal plate, or to reduce the brightness of the light source illuminating the scene or object to which the camera tube is exposed. Additionally the control voltage may be employed to increase the current in the scanning beam of the tube. The invention is of particular use in film scanners, since it may correct automatically for the illumination changes due to films of widely different density. Fig. 1 illustrates an arrangement for varying the bias of the target plate. The signal from camera 1 passes through an amplifier 2 to a clamp circuit 4, 5, where it is brought to a reference level during blanking intervals, and is then applied via a cathode-follower 6 to a rectifier connected to a voltage divider 7. The rectifier passes current only when the signal voltage exceeds a level predetermined by the setting of the divider, the excess signal passing through an amplifier 8 to a peak rectifier 9. The resulting direct voltage constitutes the control voltage and is reversed in polarity in stage 10 and applied to lower the bias voltage of the target signal plate. In a second arrangement, Fig. 2 (not shown), the control voltage is employed to control the intensity of the scanning beam and the brightness of the source of illumination, a projection lamp. Short period variations in brightness are corrected by changes in beam current and slow changes in brightness by altering the operating voltage of the lamp. The control voltage for the beam current is applied via a differentiating circuit so that the beam intensity control dies away as the effect of the change in voltage applied to the lamp becomes manifest.
Patent GB-1433294-A (GB)
Title: Fermentative production of l-valine
IPC: C12P13/08
Filed: 1974-03-07
Abstract: 1433294 L-Valine AJINOMOTO CO Inc 7 March 1974 [9 March 1973] 10354/74 Heading C2C L-Valine is prepared by culturing under aerobic conditions on a nutrient medium containing sources of assimilable carbon and nitrogen and minor organic and inorganic nutrients, a micro-organism belonging to the genus Brevibacterium or Corynebacterium and being capable of producing extracellular L-valine in the medium, until L-valine accumulates in the medium; wherein the micro-organism is resistant to 2-thiazolalanine for example the organism may be Brevibacterium lactofermentum FERM P-1945, Brevibacterium lactofermentum FERM P-1963, Brevibacterium lactofermentum FERM P-1964, Brevibacterium lactofermentum FERM P-1965, Corynebacterium glutamicum FERM P-1768, Brevibacterium lactofermentum FERM P-1845, Corynebacterium glutamicum FERM P-1966, Corynebacterium glutamicum FERM P-1967, Corynebacterium glutamicum FERM P-1968 or Corynebacterium acetoacidophilum FERM P-1314.
Patent GB-1365659-A (GB)
Title: Disc brake
IPC: F16D55/224
Filed: 1973-03-02
Abstract: 1365659 Pad type disc brakes DEUTSCHE BENDIX AUSRUSTUNGS GmbH 2 March 1973 [14 March 1972] 10357/73 Heading F2E A pad disc brake comprises an axially sliding caliper straddling a disc and containing an hydraulic piston and cylinder which acts on one pad, the other pad being actuated through the caliper wherein the centre of gravity of the surface of the other pad acted upon by the caliper is offset towards the leading region of that pad with respect to the centre of gravity of its lining, and the centre of gravity of the surface of the one pad acted upon by the piston is offset towards the trailing region of the pad with respect to the centre of gravity of its lining. Figure 3 shows an outer arm 15 of the caliper offset on the other pad 12, and the piston 17 having an offset surface 18. Figure 4 shows the other pad 22 being offset at 26 and the one pad 22<SP>1</SP> offset at 26<SP>1</SP>, the piston 27 and the arm 24 being centrally disposed. Alternatively the piston has its axis offset to the one pad, or offset metal plates are disposed between the pads and the arm and the piston respectively. All these constructions reduce uneven pad wear due to pad twisting during actuation.
Patent GB-1086367-A (GB)
Title: Detecting machine
IPC: B65B57/04
Filed: 1965-01-20
Abstract: 1,086,367. Stoppering ; conveyers &c. ANCHOR HOCKING GLASS CORPORATION. Jan. 20, 1965 [Jan. 20, 1964], No. 10397/67. Divided out of 1,086,366. Headings B8A and B8T. A mechanism for detecting containers with improperly applied closure caps, and for removing them from a conveyer, is identical with that described in the parent Specification, but the claims differ.
Patent GB-541851-A (GB)
Title: Improvements in or relating to mudguards
IPC: B62J15/00
Filed: 1940-06-15
Abstract: 541,851. Mudguards. SPEEDWELL GEAR CASE CO., Ltd., and SHARPE, L. June 15, 1940, No. 10412. [Class 136 (i)] A clip for attachment to, e.g. a cycle frame, comprises a T-piece having an attachment lug 11 and two ears 12, the piece being inserted from below through slots in the mudguard and the ears bent over. (For Figure see next page)
Patent GB-354243-A (GB)
Title: Improvements in or relating to high legged rubber boots
IPC: A43B3/02
Filed: 1930-04-02
Abstract: 354,243. Top boots. TRIGGS, W. W., 57, Lincoln's Inn Fields, London.-(Mishawaka Rubber & Woolen Mfg. Co.; 312, West Hill Street, Mishawaka, Indiana, U.S.A.) April 2, 1930, No. 10436. [Class 17 (ii).] The laminated fabric and rubber composition. leg of a top boot is slit and eyeletted at 20 up to a point 25 to permit the instep portion to be expanded in placing the boot on the foot. Water is excluded by a pocket construction behind the slit 20 formed by an inner wall extension 26, Fig. 5, of elliptical shape from the vamp, and outer flap portions 27, 28 devoid of moisture absorbent material and connected to the respective sides 21, 22 of the flap 20. After assembly of the boot parts the lining is cut along the lines 65, Fig. 5, to form the pocket. The top of the leg may be slit at 31 and fastened by a strap 32 and buckle 33 a gusset 34 closing the opening.
Patent GB-744147-A (GB)
Title: Improvements relating to storage racks
Inventor: EVANS JAMES
IPC: A47B81/00
Filed: 1953-04-17
Abstract: 744,147. Rack stands. EVERTON, Ltd., E. T. April 20, 1954 [April 17, 1953], No. 10524/53. Class 52(3). Superposed shelves 14 of curved section connect end uprights 10 which close the ends of the shelves the connecting elements being integral with or attached to the respective parts. Preferably the uprights have beaded edges 12 with gaps 13 whereby wire spigots 19 on the shelves may be inserted into the sockets formed by the beads.
Patent GB-1394541-A (GB)
Title: System for displaying a point on a transparent or translucent screen
IPC: F21V8/00
Filed: 1973-03-05
Abstract: 1394541 Display screens SOC ECA 5 March 1973 [31 March 1972] 10552/73 Heading G5C A point A of a light-transmitting screen 1 is illuminated by a plurality of light beams directed through the edges thereof. As shown in Fig. 1, mirror systems 3, 4, 5 are positioned at the corners of the screen to divide a coherent light beam 6 into three beams a, b, c which intersect at A. The corners are recessed at 26 to facilitate entry of the light beams. Partially reflecting mirrors 7 and 15 together with totally reflecting mirror 20 are rotatable in order to vary the position of point A. In a second embodiment, the three light beams a, b, c are provided by three lasers together with means for deflecting the light beams in the desired directions. The beams may be of different colours.
Patent GB-720893-A (GB)
Title: A multi-channel carrier transmission system provided with an automatic level control
IPC: H04B3/10
Filed: 1953-04-17
Abstract: 720,893. Automatic volume control. STANDARD TELEPHONES & CABLES, Ltd. April 17, 1953 [May 14, 1952], No. 10573/53. Class 40 (4). In a multi-channel carrier transmission system of the type in which the mean level of the signal wave of each channel is adjusted under the control of an individual channel pilot wave, one of the channel pilot waves is chosen to act as a group pilot wave also, and controls the level of the signal waves of a group of channels. The group pilot wave, which is preferably the pilot wave of that channel of the group which occupies the lowest frequency band, may control the adjustment, at least approximately, of the slope of the levelfrequency characteristic over the group frequency band. Preferably, the group pilot wave is rectified and the resulting unidirectional voltage is applied to control the level of the corresponding channel and also to control the gain of a group amplifier. If the channel carriers are transmitted, these may serve as the channel pilot waves.
Patent GB-122581-A (GB)
Title: Recoil Deadener for Water Main.
Inventor: BOUVIER HENRI JOSEPH
IPC: F03B15/18
Filed: 1918-06-27
Abstract: 122,581. Bouvier, H. J. June 27, 1918. Safety-valves; valves controlled by pilot or relay valves.-In apparatus for preventing the occurrence of dangerous pressures in water mains for supplying turbines or other hydraulic machinery, the main is connected to a cylinder E, Fig. 1, having a piston A acted on by a counterweight F, a spring, or a constant fluid pressure, and also to both ends of a cylinder C, in which is a piston K provided with a valve K' and a stem K<2> of lesser diameter than the valve. Should the pressure in the main exceed a predetermined value, the piston A is depressed and through a lever G opens a valve H so that water in the end C<2> of the cylinder C escapes through a pipe I. The piston K and valve K<1> are thereupon raised so that water escapes from the main through an outlet O. In order to ensure a slow return of the piston K, an adjustable needle valve M is provided in the pipe L connecting the ends of the cylinder C. In a modification, the piston A operates the valve H directly, and the latter is disposed in the piston K. Further, the slow return may be secured by small apertures h<1>, Fig. 3, in the wall of the valve H, co-operating with passages C<3>, C<4>.
Patent GB-664550-A (GB)
Title: Stabilizers for photographic emulsions
Inventor: CAT ARTHUR HENRI DE
IPC: G03C1/34
Filed: 1949-04-21
Abstract: <FORM:0664550/IV (b)/1> <FORM:0664550/IV (b)/2> <FORM:0664550/IV (b)/3> Compounds of the general formula of Fig. 1, wherein D represents the carbon atoms necessary to complete an iminazole, iminazoline, or aryleneiminazoline nucleus, R1 is OH or NH2, R2 is H, alkyl, aryl, a heterocyclic radical, or an electronegative group such as an ester, amide, ketone, or nitrile group, R3 is H, alkyl, aryl, a heterocyclic radical or an ester, amide, hydroxy, or amino group, or R2 and R3 together form an isocyclic or heterocyclic ring, are prepared by condensing a compound of the general formula of Fig. 2 with a b -ketocarboxylic acid ester, a b -ketonitrile, a b -iminonitrile, an a -cyancarboxylic acid ester, or a malonic acid ester.  The reactants may be heated together in alcohol, acetic acid, or pyridine, or without a solvent.  5 - Methyl - 7 - hydroxy - 1 : 2 - benz - 3 : 4 - diazaindolizine is prepared by refluxing together 2-aminobenziminazole and ethyl acetoacetate in acetic acid.  The following derivatives of 1 : 2 - benz - 3 : 4 - diazaindolizine :-5 - hydroxy - 7 - amino -, 5 - phenyl - 7 - amino -, 5 - carbethoxymethyl - 7 - hydroxy -, 5 - carbethoxy - 7 - hydroxy -, 5 : 6 - trimethylene - 7 - hydroxy -, 5 - a  - furyl - 7 - hydroxy -, 5 - methyl - 6 - phenacyl - 7 - hydroxy -, 5 - hydroxy - 6 - ethyl - 7 - hydroxy -, 5 : 6 - dimethyl - 7 - amino - (hydrochloride), 5 - methyl - 7 - hydroxy - x - chloro -, 5 - phenyl - 7 - hydroxy -, 5 : 6 - dimethyl - 7 - hydroxy -, 6 - phenyl - 7 - hydroxy -, 5 - methyl - 6 - cyano - 7 - hydroxy -, 5 - ethoxymethyl - 6 - ethoxy - 7 - hydroxy -, 5 : 7 - dihydroxy - 6 - carbethoxy -, 5 - methyl - 6 - a  - furyl - 7 - hydroxy -, 5 - methyl - 6 - cyclohexyl - 7 - hydroxy -, 5 - methyl - 6 - carbethoxymethyl - 7 - hydroxy -, 5 - cyclohexyl - 7 - hydroxy -, 5 - p - chlorobenzyl - 6 - p - chlorophenyl - 7 - hydroxy -, 5 : 7 - dihydroxy - 6 - acetyl-, and 5 : 7-dihydroxy-; and also 5-methyl-7 - hydroxy - 1 : 2 : 11 : 21 - naphtha - 3 : 4 - diazaindolizine, 5 - methyl - 7 - hydroxy - 1 : 2 - dihydro - 3 : 4 - diazaindolizine, 5 - phenyl - 7 - hydroxy - 1 : 2 - dihydro - 3 : 4 - diazaindolizine, and the compound of Fig. 29, are similarly prepared.  5 : 7 - Dihydroxy - 6 - carbamyl - 1 : 2 - benz - 3 : 4 - diazaindolizine is prepared by heating 5 : 7 - dihydroxy - 6 - carbethoxy - 1 : 2 - benz - 3 : 4-diazaindolizine with concentrated ammonia in a sealed tube.
Patent GB-612731-A (GB)
Title: Improvements in or relating to mercury vapour rectifiers
IPC: H01J13/34
Filed: 1946-04-05
Abstract: 612,731. Mercury vapour rectifiers. MASCHINENFABRIK OERLIKON. April 5, 1946, No. 10636. Convention date, April 6, 1945. [Class 39 (i)] A single anode mercury vapour rectifier has two auxiliary electrodes 6, 4 between the anode 1 and cathode 2; the electrode 6 is in the form of a grid and is fed with alternating current to initiate the main discharge; the other electrode 4 is fed with direct current and functions to maintain an arc between it and the cathode. It has a depending tubular extension 9 serving to screen this arc from the main discharge space, and a flared apertured extension 7 to act as a de-ionization grid.
Patent GB-548508-A (GB)
Title: Improvements in and relating to means for sealing stationery
IPC: B43M5/00
Filed: 1941-08-21
Abstract: 548,508. Envelopes; packing. TERRY, F. Aug. 21, 1941, Nos. 10647 and 13024. [Class 146 (ii)] [Also in Group XVII] Letter paper after folding is sealed by adhesive paper which is shaped to give access to the edge of the letter to facilitate opening. The seal has a central flap a, Fig. 3, which is turned inwards and protruding flaps which are folded over the edges of the letter. The centre part may be omitted, as shown, to expose an address on the letter.' In a modification, Fig. 7, a part of the seal is cut away to give access to the letter. The seal may be applied by a device, Fig. 5, comprising a base b with an adjustable plate g shaped to the seal in use and a hinged plate e with a strung frame f. A flap h is also provided when the form of seal shown in Fig. 3, is used. Plate e has a spring or weight to keep the frame f normally vertical, the frame being depressed on to a seal in position on the plate g so that moisture or adhesive may be applied to the seal. The frame is then released and the letter applied to the seal.
Patent GB-1420001-A (GB)
Title: Polyamides containing hydantoin groups and/or dihydrouracil groups
IPC: C08G69/00
Filed: 1973-03-05
Abstract: 1420001 Polyamide containing heterocyclic groups CIBA-GEIGY AG 5 March 1973 [7 March 1972] 10651/73 Heading C3R Polyamides containing N-aliphatically linked hydantoin and/or dihydrouracil groups have the Formula (I) wherein n is 2 to 200; a is 1 or 2; R<SP>1</SP> is R<SP>2</SP> is an optionally substituted CH 2  radical; R<SP>3</SP> is C 1 -C 12  unbranched alkylene which may be interrupted by ether O; R<SP>4</SP> is a nitrogen-free radical completing a 5- or 6-membered substituted or unsubstituted ring; b is 1 or 0; and R is a substituted C 2 -C 34  hydrocarbon radical or such a radical which also contains hydantoin or dihydrouracil groups. They may be prepared by reacting a dicarboxylic acid and a diamine H 2 N-R-NH 2 , or functionally equivalent derivatives, by melt, solution or interfacial techniques; suitable catalysts and chain terminators are described. They may be used for filaments, fibres, mouldings, coatings of thermoplastic adhesives; low M.W. grades may be used as hardeners for epoxides and isocyanates or as plasticizers. Numerous examples are given, the products of Specific examples including those having the following repeating units Reference is made to Specification 1,223,457.
Patent GB-1062882-A (GB)
Title: Method for checking and correcting longitudinal register in printing
IPC: B65H23/188
Filed: 1964-03-13
Abstract: 1,062,882. Automatic registration control. CEA-PEREGO S.p.A. March 13, 1964 [March 13, 1963], No. 10653/64. Heading G3R. In a system for automatically maintaining longitudinal register in multi-colour printing of a moving web, register error and rate of change of error control signals are derived from marks at each format on the web detected by a photo-cell which is operative for only a small angular movement of a printing roller. In Fig. 1, paper printed in one colour with registration marks Ic passes a second printing roller S2 which superimposes a second colour with registration marks IIc. The registration marks repeat at intervals corresponding to the longitudinal pitch of the printing and, in passing, respectively cause light to be reflected from lamps L1 L2 on to photo-cells CF1 CF2. After passing through amplifiers A1A2, the signals from the photo-cells control transistor flip-flop circuits C to produce, according to which of the marks occurs first, one or other of two signals for a period corresponding to the time interval between the two marks. The signal so produced comprises pulses the frequency of which is dependent on the speed of the web as determined by a tachometer generator DT. The pulses are integrated to produce a voltage corresponding in magnitude and polarity to the magnitude and sense of error in longitudinal registration. If a difference in timing of marks Ic IIc is desired this may be achieved by setting an integrating circuit Cb to delay one signal. An interrupter IC driven with the printing roller ensures that the photo-cells are only effective over a limited portion of the revolution to eliminate the effect of other printed matter on the photo-cells. To the error signal so derived is added a signal, corresponding to the rate of change of error, obtained by subtracting from the average of each group of four error detections the average of the preceding group of four error detections. These average signals are derived by digital computation and converted to analogue signals. The resultant error signal is effective to eliminate error automatically by operating through a circuit PCR a reversible servomotor MCII which adjusts a roller T2 in the appropriate sense to alter the length of paper between the first and second printing rollers. Operation of the servomotor is interrupted periodically to prevent over correction and correction continues until a signal corresponding to the amount of correction equals the resultant error signal. Error signals are inhibited during correction and digital stores are reset after each correction. Application to printing in more than two colours is referred to.
Patent GB-1378731-A (GB)
Title: Electric motor control assembly
IPC: B60S1/08
Filed: 1972-03-13
Abstract: 1378731 Control of D.C. motors SWFSPEZIALFABKIK FUER AUTOZUBEHOER GUSTAV RAU GmbH 13 March 1972 [13 March 1971] 10666/74 Divided out of 1378047 Heading H2J In an electric motor control assembly including a wiper motor 314, motor switching relay 310-313 and a multivibrator 323-331, the supply to the motor is maintained through a diode 321 while the relay is switching. Closure of operating switch 318, 319 turns on transistor 323 energizing relay coil 310 and connecting motor 314 to the supply via contacts 311, 313. The relay remains energized until capacitor 324 is charged via resistors 327, 328 and the multivibrator switches over thus allowing time for the motor to start and change over the contacts of parking switch 315-317 to maintain the supply to the motor. The diode 321 carries the motor current while the relay contacts are changing over and thereby eliminates sparking at the relay contacts. The parking switch deenergizes the motor at the end of one wipe and applies a short circuit to brake it. The cycle is repeated when the multivibrator again switches over after a time varied by resistor 229.
Patent GB-904993-A (GB)
Title: Process for the separation of naphthalene and its derivatives from benzene and its derivatives
Inventor: PAPADOPOULUS MICHAEL NICHOLAS
IPC: C10G21/00
Filed: 1961-03-23
Abstract: Naphthalenes of differing carbon number are separated from alkyl benzenes of comparable carbon number by liquid-liquid extraction with a sulpholane type solvent to obtain an extract enriched in naphthalenes and a raffinate enriched in benzenes. The difference in carbon number between the highest and lowest hydrocarbons in the feed is preferably from 5-8; suitable feeds are obtained from coker gas oil and cycle gas oil from a catalytic cracking.  The sulpholane solvent may contain alkyl substituents or polar groups containing oxygen, nitrogen, sulphur or halogen, e.g. those described in Specification 625,505.  The specific gravity of the sulpholane is preferably at least 0.2 above or below that of the feed and is used in a weight ratio to feed of 0.2-2.0.  In a preferred embodiment a feed e.g. boiling from 160-315 DEG C. also containing saturated hydrocarbons is distilled to obtain a fraction boiling below the naphthalene-containing feed, e.g. 160-205 DEG C., having a higher saturate content than the total feed, and a side stream, e.g. boiling from 195-235 DEG C. which is subjected to extraction, and the lower boiling fraction is used as a countersolvent in the extraction, being introduced at the end where the extract is removed.  The naphthalenes are preferably recovered from the extract by a further extraction with a non-polar solvent immiscible with the sulpholane and boiling below the naphthalenes, e.g. a C1-10 paraffin, which is used in a weight ratio to extract of 0.2-2.0 and separated from the naphthalene by distillation.
Patent GB-1285796-A (GB)
Title: An arrangement for application of bronze powder to paper strip
IPC: A24C5/20
Filed: 1970-03-05
Abstract: 1285796 Applying powder to paper webs BAT CIGARETTEN-FARIKEN GmbH 5 March 1970 [5 March 1969] 10720/70 Heading D1L [Also in Divisions F2 and B6] Bronze powder is applied to adhesive imprints on a moving paper strip, e.g. of cigarette paper, by a rotating applying roller surfaced with a macroscopically smooth plastics material cover. Preferably the applying roller has a cover of polyamide, and is rotated in such a direction that where it contacts the paper, strip its surface moves against the direction of movement of the paper strip. The bronze powder may be drawn from a reservoir through a variable aperture into a chamber where a transfer roller with a polyamide surface picks it up and transfers it to the applying roller. The paper strip with the bronze powder on it is passed over a metal roller with cup-shaped recesses in its surface to cause it to vibrate and rid itself of surplus bronze powder.