baber/WOPTO huggingface dataset:
Patent GB-406521-A (GB)
Title: Improvements in or relating to hand tools such as drilling machines having a built-in electric motor
IPC: B23Q11/08
Filed: 1933-05-19
Abstract: 406,521. Portable grinding-machines. BOSCH AKT.- GES., R., 4, Militõrstrasse, Stuttgart, Germany. May 19, 1933, No. 14502. Convention date, June 30, 1932. [Class 60.] A portable tool having a builtin electric motor and an adjustable tool-clamping chuck which may be used to grip an abrasive wheel, is characterised by the chuck being permanently enshrouded within a fixed protective casing connected with the casing of the motor. An electric motor 1 enclosed by a casing 2 rotates through gearing a spindle 3 and adjustable chuck 4. A casing 6 which may be held to guide the tool is attached to a bearing sleeve 5 flanged to the motor housing 2, thus enclosing the chuck but having an opening 7 through which the latter may be adjusted.
Patent GB-1123228-A (GB)
Title: Improvements in and relating to circuit arrangements for contrast control in television receivers
IPC: H04N5/14
Filed: 1966-04-01
Abstract: 1,123,228. Television. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. 1 April, 1966 [6 April, 1965], No. 14569/66. Heading H4F. A circuit arrangement for contrast control in a television receiver whilst the black level is held substantially constant comprises a video output tube 1, Fig. 1, between the control grid and cathode of which there is provided a video detector 3, 4, 5, 6, for the detection of negatively modulated television signals, the cathode resistor of tube 1 being formed by the series combination of a potentiometer resistor R 1  having a variable tapping 7 and a fixed resistor R a  connected to earth, the variable tapping 7 being connected to the video detector and to the cathode of an automatic gain control tube 2 which passes current only at the appearance of the peaks of the synchronizing pulses. The Specification explains that with this arrangement the sum (R 1  + R 2 ) of the potentiometer and the fixed resistor and the ratio between the two resistors are such that with a displacement of the tapping 7 the black level of the output signal from the video output tube remains substantially constant while the contrast varies. The anode of the AGC tube 2 receives positive-going fly-back pulses 9 which cause an anode current to flow through tube 2 the intensity of which is determined by the peaks of the synchronizing pulses of the video signal i.e. by the instantaneous value of the cathode voltage of tube 2. This anode current produces a voltage drop across resistors 11 and 12 which is smoothed by capacitor 13 and the resultant negative AGC voltage is applied to the I.F. and H.F. tubes to be controlled in the television receiver. The black level is held constant during contrast control because the anode current of tube 1 invariable assumes the same value practically independently of the contrast control at the occurrence of the black level. This is achieved by first displacing tapping 7 towards the junction of potentiometer R 1  with the cathode of tube 1 and adjusting the value of R 1  + R 2  to obtain the required anode current at black level, secondly, displacing the tapping 7 towards the junction of resistors R 1  and R 2  and adjusting the value of R 2  keeping the sum R 1  + R 2  constant, to obtain the same anode current, and thirdly, measuring the anode current at the black level for various positions of the tapping 7 to ensure that it does not exceed by more than 5% for example the anode current at the black level adjusted in the two extreme positions of the variable tapping.
Patent GB-846258-A (GB)
Title: Improvements in or relating to potentiometers and variable resistors
Inventor: BROWN JOHN KENNETH
IPC: H01C10/32
Filed: 1957-12-23
Abstract: 846,258. Variable resistors. A. B. METAL, PRODUCTS Ltd. Dec. 23,1958 [Dec. 23, 1957] No. 14646/59. Class 37. A double potentiometer comprises a pair of rotatable cup shaped casings mounted back to back with a fixed base plate between them, and an operating member rotatably mounted in one casing and extending through the base plate for rotating a second casing. In the embodiment described a casing 14 has an elongated part 26 serving as a control knob through which extends a shaft 33 connected to a second casing 27 and carrying a second control knob 34. The casings are closed by base plates 1 and 30, which are separated by spaces 32. Attached to each base plate (Fig. 2 of Provisional Specification) is a resistive track 3 and a contact track 5, the latter being secured by lugs passing through the holes 7, one of them forming the terminal 6 (Fig. 1). Slots 2 are provided in the base plate 1 are provided in the base plate 1 for mounting the potentiometer on a support. A wiper assembly 18 is attached to each cover by means of lugs which fit into recesses in the cover (Fig. 3 of Provisional Specification not shown), each wiper having sliding elements which bear on its associated resistive and contact tracks. For mounting the potentiometers a frame 35 (Fig. 2) is provided with integral tags 36 which are inserted into the slots 2 and then twisted to retain the potentiometer in position. The frame may be riveted to a support member 38 which has tags 39 for mounting on a printed circuit panel.
Patent GB-613503-A (GB)
Title: Improvements in or relating to a machine for making radiators
IPC: B21D53/08
Filed: 1946-05-07
Abstract: 613,503. Making heat-exchangers. FORD MOTOR CO., Ltd., and LEEK, J. W. May 7, 1946, No. 14676/48. Divided out of 613,472. [Class 83 (ii)] A machine for making radiators of the kind having a plurality of metal tubes passing through a number of parallel metal fins comprises means for arranging an assembly of tubes in alignment with a stack of perforated metal fins and means for moving the tubes longitudinally through the stack of fins to form the complete assembly. A nest of tubes 56 already assembled in the correct relative positions as described in Specification 613,502, is placed in a press with the plate 57 of the assembly resting on a perforated base plate 71 of the press as shown in Fig. 3. The nest 56 is then moved down its supporting rods 59 and down the tubes 3 until it rests on the plate 57, which is then withdrawn so that the tubes drop out of the nest 56 into a nest 72. The nest 56 is. removed and a stack of alternate fins and separators assembled as described in Specification 613,472 is placed on the base plate 71 and clamped by a hydraulically operated member 73. Hydraulic fluid is then supplied to a cylinder 78 so that pusher rods 81 are moved up and push the tubes from the nest 72 upwardly through the perforations in the fins. The rear edges of the separators between the fins are gripped by a boot 84a, Fig. 8, and pushed out from between the fins by push rods 86, 87, operated from a cylinder 89, leaving the completed radiator on the plate 71.
Patent GB-438144-A (GB)
Title: Improvements relating to vehicles
IPC: B60J5/12
Filed: 1934-05-15
Abstract: 438,144. Vehicle doors ; door-operating means. FISHER, G. L., 561, Old Kent Road, London. May 15, 1934, No. 14686. [Class 108 (i)] [See also Group XXV] In road vehicles having tailboards hinged at the upper edge the hinge is mounted so that the tailboard is capable of sliding upwardly in order to clear the load which is being discharged, the tailboard being swung outwardly by the load if necessary. The tailboard comprises upper and lower positions 11, 1 hinged together so that the lower portion 1 constitutes the tailboard proper. The upper portion 11 is provided at each side with a plate 4 carrying rollers 5 adapted to be guided vertically in channels 2 secured to the outside of the body. An endless chain &c. 6 is arranged at each side of the vehicle for raising and lowering the tailboard and the lower portion 1 is provided with an arm 8 which when it con. tacts with a stop 9 causes the lower portion 1 to swing outwardly. The portion 1 is provided with a projection 17 adapted to enter an opening in an angle member in order to latch it in the closed position, the portion being brought into vertical position to engage the latch by means of the arm encountering a stop 10. In another form the arm 8 may be connected by a link 12 to the body, the lower end of the link having a certain amount of lost motion to ensure disengagement of the latching means before the lower portion is swung outwardly. The vehicle may be provided with a movable floor and movable partition for discharging the load.
Patent GB-290677-A (GB)
Title: Automatic recording or registering distributer for all kinds of liquids
IPC: B67D7/16
Filed: 1928-05-19
Abstract: 290,677. Soc. d' Etudes pour le Transport et la Manutention de Liquides Alimentaires, dite Soc. Tamala. May 19, 1927, [Convention date]. L i q u i d meters.- Measuring chambers 1, 1<1>, Fig. 1, are provided with flexible diaphragms 16, 16', the motion bf which is transmitted through liquid in pipes 17, 17<1> to a diaphragm 6, which operates distributing cocks 3, 3<1> through a spindle 7, the threaded ends of the latter engaging threaded members 9 connected with the cocks through stems 12 and springs 13. The pipes 17, 17<1> are also connected to bellows chambers 18, 18<1> which operate an escapement 20 acting on pins 21<1> on a member connected through a clutch with a spring drum 22. A counter 43 and apparatus for perforating a record card are also provided. The card is placed between discs 28, 29, Fig. 2, capable of being turned relatively to a fixed plate 26 having a spiral 30 for the radial adjustment of a perforating member 31, which is operated by a plate 34 from a lever 37.
Patent GB-434469-A (GB)
Title: Improvements in or relating to television and like transmitting systems
IPC: H04N3/237
Filed: 1935-05-20
Abstract: 434,469. Television. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., Electra House, Victoria Embankment, London.- (Assignees of Bedford, A. V.; 118, East Palmer Avenue, Collingswood, New Jersey, U.S.A.) May 20, 1935, No. 14747. Convention date, May 18, 1934. [Classes 40 (iii) and 40 (v)] In a cathode-ray transmitter employing interlaced scanning in which the line frequency is a whole number plus a fraction times the frame frequency, as described in Specification 420,391, the line and frame deflecting sawtooth oscillators 81, 83 are controlled by oscillations derived from a single oscillator 1 whose frequency is a multiple of both the line and frame frequencies. The oscillator 1, which is preferably a blocking oscillator in which the charge and discharge of a condenser 13 determines the frequency of e.g. 10800 c.p.s., locks in step chain of similar oscillators 27, 29, 31, 33, tuned to successive small subdivisions of 10800 c.p.s., to produce the frame frequency for controlling the oscillator 83 and also supply synchronizing impulses over an amplifier 91 for transmission. Similarly, an oscillator 51, e.g. of frequency 5400, is fed from the oscillator 1 to produce line synchronizing impulses and control the oscillator 51. The amplifiers 89, 91 preferably include valves operated beyond their cutoff point so that flat-topped synchronizing impulses are obtained. The system may be modified for triple interlaced scanning.
Patent GB-991382-A (GB)
Title: Lubricating compositions comprising partial esters of tricarboxy acids
Inventor: MATUSZAK ALFRED HENRY
Filed: 1963-04-16
Abstract: Mono- and di-esters of C6 and C7 alkanetrioic acids with C3-20 alkanols may be prepared by conventional esterification techniques. Many suitable reactants are given, and in Example A, a mono-C8-Oxo-ester of 1,2,4-butane tricarboxy acid is prepared from the corresponding alcohol and the acid.ALSO:Lubricating oil compositions comprise 0.25-90 wt. per cent of a C3- 20 alkyl mono- or diester of a C6- 7 tricarboxy aliphatic acid and 99.75-10 wt. per cent of a mineral and/or synthetic lubricating oil.  Suitable synthetic oils are aliphatic diesters, complex esters, and esters of polyhydric alcohols, examples being given.  Optional additions to the compositions include calcium petroleum sulphonate, polymethacrylates, phenyl - a  - naphthylamine, p-amino diphenylamine, phenothiazine, tricresyl phosphate and sorbitan monooleate.
Patent GB-1500545-A (GB)
Title: Device for compensating the length of binding threads in a rotary entangling device
IPC: D03C7/04
Filed: 1975-04-10
Abstract: 1500545 Leno shedding device ZBROJOVKA VSETIN NARODNI PODNIK 10 April 1975 [11 April 1974] 14830/75 Heading D1E A device for equalising the length of binding threads in a leno shedding device comprises a shedding disc 8 with symmetrically disposed guide apertures 6, 7 disposed on the circumference of an imaginary circle which approximately corresponds to the magnitude of the warp thread shed at a given distance of the disc from the binding point and leno thread supply bobbins outside the shedding disc.
Patent GB-1033217-A (GB)
Title: Improvements in cold-cathode trigger-tube ignition-circuits
IPC: H01J17/04
Filed: 1963-04-16
Abstract: 1,033,217. Discharge tube circuits. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. April 16, 1963 [April 17, 1962], No. 14843/63. Heading H3P. In a circuit for triggering a cold-cathode gasfilled discharge tube, the trigger electrode is connected via a resistance to a bias voltage greater than the trigger-cathode ignition voltage, the resistance being sufficiently great that the trigger current is less than the transfer current necessary to initiate breakdown of the anodecathode gap and provision is made for increasing the current in the trigger circuit by means of a capacitor and a diode so as to transfer the glow to the anode-cathode gap. As shown in Fig. 2, the trigger-cathode gap of the cold-cathode tube 1 is normally ionized by a small current via a 22 megohm resistor 5, the trigger current being insufficient to initiate a discharge between cathode and anode. Capacitor 10 is normally charged from potential divider 7, 8, 9 to such a voltage that diode 6 is non-conductive. When a positive pulse is received at the junction of resistor 7, 9, capacitor 10 charges rapidly via resistor 9 until the voltage at point B exceeds that at point A on a second potential divider, when capacitor 10 partially discharges via diode 6, capacitor 13 and the trigger-cathode gap of tube 1. This causes the main gap of tube 1 to break down, energizing relay 3. The resistance of the bias circuit 14, 15, 16 is made greater than that of circuit 7, 8, 9. Delayed operated switching circuits.-Fig. 3 shows a delayed operated switch in which capacitor 10 is normally short circuited until switch 17 is set to its upper position when capacitor 10 charges until the voltage at point B becomes greater than that at A when capacitor 10 begins to discharge via diode 6, capacitor 13 and the trigger-cathode gap of tube 1, thus energizing relay 3. In Fig. 4 (not shown), a capacitor 18 is connected between a tapping on resistor 8 and the upper end of resistor 15, whilst switch 17 is connected in the positive end of resistor 15.
Patent GB-865401-A (GB)
Title: A semi-conductor device
IPC: H01L29/00
Filed: 1958-05-09
Abstract: 865,401. Semi-conductor devices. RAYTHEON CO. May 9, 1958 [July 15, 1957], No. 14926/58. Class 37. A semi-conductor device comprises a PN junction reverse biased to create a space charge region, an electrode in contact with the space charge region and adapted to inject carriers directly into it and a rectifying electrode also in contact with the space charge region to modulate the space charge distribution. In one embodiment, Fig. 1, in which the space charge region created by bias battery 4 lies mainly in the N-type region, the injection electrode 9 is a strongly doped N-type region or a tungsten point pressed against the body and is forward biased. The modulating electrode 12 is a strongly doped P-type region produced by alloying a gold dot to the body and is reversebiased with reference to the body. In operation the potential of the space charge region beneath electrode 9 and hence the injected current is modulated by the signal voltage applied to electrode 12. Moreover, with a strong bias on electrode 12 the injected current becomes substantially independent of the voltage across the load 5, i.e. the output impedance is very high, e.g. 30 M#. The maximum transconductance #I inj /#V max  is obtained when electrodes 9 and 12 lie on a line transverse to the PN junction. The transconductance and power handling capacity are further improved if the injector and modulator electrodes are strongly doped N and P type regions respectively extending parallel to the PN junction across one face of the body (Fig. 11a). These regions may be formed by fusing donor and acceptor containing wires to the body. Another device exhibiting high transconductance is shown in Fig. 11b in which the injector- and modulator electrodes are disposed on opposite faces of the space charge region. In all the above embodiments, in which the signal to be amplified is applied between the P-type region and the modulating electrode, the input impedance is high. If, on the other hand, the signal is applied between the P-type region and the injecting contact a low input impedance is provided. In the above-described embodiments the space charge region is mainly in the N-type region. Where the space charge region lies mainly in the P-type region of the semiconductor body the injecting contact will be a point contact or a P+ region positively biased with respect to the underlying semiconductor and the modulator contact an N+ region positively biased. The devices have the advantage over junction transistors that since the carriers are injected direct into the space charge region in which there is a high field strength the transit time is very small so that operation at very high frequencies is possible. Also, since virtually no carrier recombination can take place within the space charge region materials having short carrier lifetime may be used in the devices. Germanium, silicon, silicon carbide and compounds of elements from Groups III and V or IV and VI of the Periodic Table are said to be suitable.
Patent GB-1184922-A (GB)
Title: Cosmetic Preparations comprising Tea Extracts
IPC: A61Q19/04
Filed: 1967-03-31
Abstract: 1,184,922. Cosmetic compositions. LABORATOIRES RENE RAMBAUD. 31 March, 1967 [31 March, 1966], No. 14967/67. Heading A5B. Cosmetic compositions comprise an aqueous extract of tea together with conventional cosmetic excipients and/or an oily extract of tea optionally together with such excipients. The preferred composition consists of an emulsion of the oily extract and the aqueous extract. Excipients for the aqueous extract compositions may be alcohol and floral juices, or known oily ingredients, and the compositions may be in the form of lotions, foundation milk or cream, or anti-sunburn cream. Oily extracts may include lipophilic ingredients such as vegetable oils and fatty esters, and may take the form of an anti-wrinkle cream, a cleansing cream or a masking cosmetic. The aqueous extract is prepared by boiling powdered tea leaves with demineralised water, filtering off the leaves and making up the volume to provide I 1. of extract per 100 gs. tea. The oily extract is prepared by steeping powdered tea leaves in a neutral oil for five days, using 1 kgm. oil per 300 gs. tea, and then filtering off the tea. Suitable oils are liquid paraffin, isopropyl myristate, perhydrosqualene or a polyglycol.
Patent GB-1305176-A (GB)
IPC: D06C9/02
Filed: 1971-05-14
Abstract: 1305176 Amospheric burners for singeing textiles W OSTHOFF 14 May 1971 [15 May 1970] 14967/71 Heading F4T To provide a more efficient and stable flame for singeing textile webs a burner unit comprises a casing 1 defining a chamber 3, and combustion chambers 21a, 21b having a flame slit 25, a gap 2 being formed in the casing 1 and a distributing strip 11 seated therein on ledges 12 so that in use a gaseous fuel mixture is supplied through a channel 13 and bores 20, 19 to two straight, parallel continuous slits 15, 16 which produce a common divergent flame in the combustion chamber 21a. The casing 1 and mixture distributing strip 11 are suitably made from extruded aluminium section and cooling water ducts 4 and 5 prevent damage to the slits from heat in use. The length of slits and combustion chambers actually used in the direction perpendicular to the section of Fig. 3 may be adjusted in sections to suit a particular textile web by the provision of shut off members in chamber 3 which are moved upwards to seal off the bottom of the distributing strip by means of levers external of the casing 1. Bolts 14 hold the walls of the casing 1 together and also secure the distributing strip 11 in position although the latter may be removed and replaced by a differently sized strip to alter the width of the slits. The gaseous mixture is supplied to the lower part of chamber 3 and rises through a choke slit 1c and fine meshed screen 9 which removes impurities. The combustion chambers 21a and 21b, which are defined by refractory ramp bricks 22, 23, have a flame stabilizing constriction disposed between them. A layer 24 of thermal insulating material is provided.
Patent GB-811165-A (GB)
Title: Dye sensitization of photoconductive materials
IPC: G03G5/06
Filed: 1955-05-24
Abstract: A photo-conductive material comprises zinc oxide and a film forming substance, and an organic dye which absorbs radiant energy which it transfers to the zinc oxide, to extend the spectral sensitivity range.  The material may be used for xerography or photo-conductive cells.  In one example, a mixture of 80 gms. of silicone resin solution, 106 gms. of toluol and 120 gms. of white zinc oxide is mixed with a solution of rose bengal dye in methyl alcohol, ball milled, coated upon paper and dried.  Many other dyes are mentioned as alternatives including eosin, fluorexin, erythrosin and crystal violet.
Patent GB-660866-A (GB)
Title: Method for the production of a polyvalent blood coagulator
IPC: A61K35/30
Filed: 1949-06-03
Abstract: 660,866. Blood - staunching preparation. GIBONE-ANSTALT. June 3, 1949 [June 11, 1948], No. 15014/49. Class 81 (i). A polyvalent blood-staunching substance is prepared by transforming an organ having parenchymous tissue into a paste-like homogeneous mass, treating the mass with acetone and separately and subsequently by ether, the insoluble residue from these extractions being then treated with aqueous ethanol and the resulting solution being evaporated in vacuo to reduce its volume. The organ employed may be brain, lung, liver or kidney. The treatments are preferably carried out at 0‹ C. Prior to the acetone extraction, the mass may be subjected to maceration, for example at 5‹ C. for 10 hours. The final evaporation may be taken to dryness, or alternatively, up to the removal of the alcohol, the resulting aqueous residue being diluted with water as desired. The Specification as open to inspection under Sect. 91 describes also the replacement of acetone by another low molecular ketone, the replacement of ether by petroleum ether, benzine, chloroform, carbon tetrachloride, benzene, cyclohexene, acetone or lower homologues of diethyl ether, and the replacement of ethanol by methyl, propyl or butyl alcohol. This subjectmatter does not appear in the Specification as accepted.
Patent GB-1092204-A (GB)
Title: Improvements in and relating to aminoacetylenes
IPC: C07C209/74
Filed: 1965-04-09
Abstract: Fully N-substituted ethinylamines, 2-hydro-carbylethinylamines and ethinylenediamines are made by adding halogen (e.g. Br2) to the corresponding ethylenic compounds, followed by elimination of hydrogen halide from the dihalide intermediates by use of strong bases, e.g. Me3COK/Me3COH complex or LiNMe2. Examples describe the preparation of PhC­ CNEt2 and Me3CC­CNMe2.