baber/WOPTO huggingface dataset:
Patent GB-1154243-A (GB)
Title: Improvements in and relating to Electrometers
Inventor: FERMOR JAMES HUGH
IPC: G01R19/18
Filed: 1966-02-09
Abstract: 1,154,243. Direct voltage measurement. NATIONAL RESEARCH DEVELOPMENT CORP. Feb. 1, 1967 [Feb. 9, 1966; March 7, 1966; April 6, 1966], Nos. 5592/66, 9883/66 and 15225/66. Heading G1U. [ Also in Division H1] In an apparatus for measuring a unidirectional voltage, wherein the mesuring system is isolated from the input, a pair of variable capacitors C1, C2 are connected in series, with an impedance path containing resistors R1, R2 connected across them, and the input is applied between the common junction of the capacitors and a point in the impedance path. The capacitances are varied periodically in anti-phase, to produce across the resistors an A. C. which provides a measure of the input. This A. C. is amplified and passed to an indicator or recorder. The balanced arrangement shown in Fig. 1 enables input signals from a high impedance source relative to earth to be dealt with. If both input terminals are to be connected to high impedance circuits, Fig. 4 then two pairs of capacitors 11, 12; 22, 23 varied in anti-phase are provided, the two input terminals being connected to the capacitor junctions of the two pairs. Two pairs of resistors inter-connect the capacitors and either two outputs can be derived across these Fig. 3 (not shown), or two outputs related to earth may be derived by earthing the mid points of the resistors (as shown), the two outputs being fed to a push pull amplifier. To improve the sensitivity of the system the time constant of the input CR network must be increased, and this is achieved by providing negative feedback from the amplifier, to avoid the need to increase the physical values of R1 and R2 Fig. 5 (not shown). Heavy screening as provided, to eliminate stray capacitance, &c., and reduce noise. A simplified circuit for coupling directly to a galvanometer, when using a relatively low impedance may be obtained by connecting one end of R1, R2 to earth instead of the mid point Fig. 6 (not shown). The small resistance in this case enables improved response time to be obtained. The factors governing the choice of operating frequency are discussed in detail in the Specification, and suitable constructions to form the pair of anti-phase variable capacitors are outlined (see Division H1).
Patent GB-1379100-A (GB)
Title: Cam-and-roller type over-run clutch
IPC: F16D41/067
Filed: 1972-03-30
Abstract: 1379100 Ratchet clutches BORG-WARNERSTIEBER GmbH 30 March 1972 [1 April 1971] 15242/72 Heading F2C A jamming roller overrun clutch in which rollers 3 bear against wedges 15 on the inner race 1, the outer race (not shown) having a cylindrical internal surface, has folded leaf springs 6 biasing the rollers 3 to the jammed position, these leaf springs 6 being on a cage 4 secured against axial and peripheral movement on the inner member by end plates (not shown), the cage having transverse portions bounding the roller receiving pockets 9. An abutment 16 prevents the rollers 3 from falling out if the outer race is removed and the folding planes of the spring may extend substantially axially of the clutch instead of radially as shown.
Patent GB-1426818-A (GB)
Title: Pattern contour tracing apparatus
IPC: B23Q35/128
Filed: 1973-03-29
Abstract: 1426818 Line followers STEWARTWARNER CORP 29 March 1973 [29 March 1972] 15242/73 Heading G1A In a line follower, the scanning head 10 comprises a pair of photo-electric cells having respective triangular light-sensitive areas extending transversely across a reference line which is to be  positioned relative to a line to be followed, one of the areas being defined by an isosceles triangle and the other area by two right triangles each having a hypotenuse adjacent to and substantially coextensive with a respective one of the equal legs of the isosceles triangle. The areas are equal and may be provided by the cells themselves or by masks overlying the cells. The cells may be photo-voltaic or photo-resistive and are provided with metal foil terminals 30. The photocell arrangement 18 is mounted on the head to receive light from a lamp 20 reflected from the surface of the object to be scanned via a lens 22. Mirrors may be used. The lamp may be a neon lamp or an incandescent lamp which may be pulsed or D.C. energized. The head is rotatable about a vertical axis 12 by a motor, the displacement of the head in the X and Y directions being controlled by two further motors via worms. The outputs of the cells may be subtracted or added together and subtracted from a reference. As described with reference to Figs. 4 and 4a (not shown), three pairs of cells are arranged on the head, and two further cells are provided adjacent the ends of two of the pairs to provide for finding a line to be followed. Circuitry is described for controlling the three motors for causing the head to follow the line and for selecting fast or slow following of lines or edges.
Patent GB-591446-A (GB)
Title: Improvements in and relating to wall construction
IPC: E04B2/28
Filed: 1943-09-17
Abstract: 591,446. Walls. HOENIG, E. Sept. 17, 1943, No. 15268. Drawings to Specification. [Class 20 (iv)] A wall comprises reinforced concrete stanchions cast in situ in continuous vertical cavities formed, between horizontal and vertical elements, by apertures in the horizontal elements and angular or channelled edges in the vertical elements. Rebates are formed at the top and bottom edges of the horizontal elements and around the apertures to position the ends of the vertical elements. The term horizontal element covers foundation blocks. sole pieces, window and door sills and lintels, beams, head-pieces at each story height and cornices shaped as gutters. Vertical element includes wall slabs and the sides of windows and door frames.
Patent GB-1077232-A (GB)
Title: Improvements in conversion apparatus for use in telegraph systems
Inventor: GREEN NORMAN GEORGE
IPC: H04L25/22
Filed: 1964-04-14
Abstract: 1,077,232. Data transmission; transistor switching circuits. BRITISH TELECOMMUNICATIONS RESEARCH Ltd. April 8, 1965 [April 14, 1964], No. 15397/64. Headings H3T and H4P. To permit the use of a receiver with any one of various forms of line telegraph signals, a conversion circuit precedes the receiver and comprises two multivibrators connected across the line. The multivibrators are connected so that one operates in response to positive signals and the other to negative, and feed a toggle which is slow acting, whereby, when the toggle is switched from one state to the other, it remains in that state until the multivibrator which caused the switching ceases to operate. The circuitry preceding the multivibrators comprises resistor networks which are selected by switches so that the correct voltage is supplied to the multivibrators; the input may, for example, be single or double current and at 6v or 60v. In the case of single current, only one of the multivibrators is operative. The output toggle is fed via D.C. blocking capacitors and a switch which, for single current operation, selects the output of the operative multivibrator.
Patent GB-882270-A (GB)
Title: Improved process for the production of arylborazoles
IPC: C07F5/02
Filed: 1960-05-02
Abstract: Arylborazoles are produced by reacting, in an inert organic solvent, a B-haloborazole of one of the general formulae (HNBX)3, (RNBX)3 and (R1NBX)3 with a Grignard reagent, distilling the solvent from the reaction mass, adding water to the mass freed from solvent and separating the resultant solid arylborazole from the aqueous solution, e.g. by filtration; where R is an alkyl radical, R1 is an aryl radical, and X is a halogen atom, provided that when the B-haloborazole is of the formula (HNBX)3 or (RNBX)3 then the Grignard reagent must contain an aryl radical.  An example describes the production of B-triphenylborazole by reacting B-trichloroborazole and phenyl magnesium bromide in ether, distilling the ether off, adding water to the mass and separating the remaining solid B-triphenylborazole from the aqueous solution.
Patent GB-303326-A (GB)
Title: Improvements in or relating to telescopic pit-props and the like
IPC: E21D15/38
Filed: 1928-05-25
Abstract: 303,326. Marshall, A. C., and Preist, A. S. May 25, 1928. Mine props.-A telescopic pit-prop is formed of tubular members, with clamps on each, one clamp having a lever member to separate the parts and adjust the prop. The outer member 2 is cut away at x to expose the inner member 1 and a two part clamp 3 is fixed to the outer member at this part. A removable two-part clamp 11 is fixed to the inner member and carries a lever 13 having rollers 14<a> interposed between the clamps or between projections on the clamps. The members are separated by depressing the lever and are clamped in adjusted position by the clamp 3; the clamp 11 can then be removed for other use.
Patent GB-880040-A (GB)
Title: Improvements relating to typographical composing machines
IPC: B41B11/18
Filed: 1959-05-07
Abstract: 880,040. Clutch control. MERGENTHALER LINOTYPE CO. March 7, 1959 [July 29, 1958], No. 15644/59. Class 80 (2). [Also in Group XVI] The distributer clutch of a typographical line-cutting machine is mounted on a driven shaft for powering the distributer screws, and the driven clutch member has a release plate resiliently coupled thereto, there being provided means responsive to axial movement of one of the screws, due to abnormal resistance to rotation as by a jammed matrix, for positively locking the release plate against rotation, whereupon camming means attached to the release plate engage follower means rotatable with the shaft to separate the clutch members. The driven clutch disc 16, Fig. 1, functionally engages facings 24, Figs. 1 and 2, of the driven disc 23 keyed to the shaft 20. The facings 24 extend through slots in a release plate 25 resiliently attached to the disc 23 by tension springs 39. On axial movement of the lower distributer screw 13, Figs. 1 and 5, a U-shaped member 43 is moved axially along a fixed shaft 44 against the action of a spring 45, by means of a driven gear 30 and a roller 50, and a finger 51 is pushed off a fixed adjustable stud 52, whereupon the spring 45 rotates the member 43, and a pawl 55 engages a tooth of the plate 25 to prevent further rotation thereof. On continued rotation of the shaft 20, a pin 22 carried thereby engages camming shoes 42 on the plate 25 moving the plate and the disc 23 away from the disc 16 against a spring 35 to disengage the clutch. The relative angular positions of the disc 23 and plate 24 are adjustable by an eccentric pin 38. At the same time, a lever 56 on the member 43 allows a switch to close and light a warning lamp. By means of a finger grip 54 on the lever 53 carrying the pawl, the member 43 can be rotated in the other direction until the finger 51 is clear of the side of the stud 52, whereupon the spring 45 retracts axially the member 43 and the screw 13.
Patent GB-131492-A (GB)
Title: Improvements in and relating to Iron Alloys.
Inventor: IBE KISAKU
IPC: C22C38/14
Filed: 1918-09-26
Abstract: 131,492. Ibe, K. Sept. 26, 1918. Alloys.-An iron alloy contains 1-5 per cent. of vanadium, 1-5 per cent of titanium, and 5-75 per cent of silicon, and is made by fusing the elements together, or by the direct reduction of ores in an electric or other furnace.
Patent GB-1592899-A (GB)
Title: Electronic timepieces with stepping motor-driven analogue time displays
IPC: G04C3/14
Filed: 1978-04-20
Abstract: In an electronic watch having an oscillator for producing a time base signal and stepping motor, drive pulses are produced for normally driving the motor under normal load conditions. The rotation and non-rotation of the motor in response to the last drive pulse is detected in response to a detecting pulse, and if non-rotation has been detected, a predetermined plurality of correction pulses are applied to the motor for driving same, the correction pulses being sufficient to drive the motor under a high torque loading. In this way, power consumption is decreased since a high power driving is saved only for high torque loading conditions.
Patent GB-317912-A (GB)
Title: Improvements in the production of artificial threads and the like from viscose, and in apparatus therefor
IPC: D01D7/02
Filed: 1928-05-29
Abstract: 317,912. Courtaulds, Ltd., Hegan, H. J., and Hazeley, E. May 29, 1928. Apparatus for making filaments; cellulose xanthates, processes for making filaments from.- In the manufacture of artificial threads from viscose, the thread is passed from the precipitating bath over a rotating wheel and thence practically vertically downwards on to a second rotating wheel and thence to a collecting device, the thread being treated with water or other liquid as it passes round the second wheel. A third wheel may be interposed between the second wheel and the collecting device, and the thread may be treated with liquid on the third wheel as well as on the second wheel. The peripheral speed of the second wheel may be equal to or greater than that of the first wheel, and the speed of the third wheel may be less than that of the second wheel. The method is particularly applicable to threads produced in strongly acid baths such as are described in Specifications 274,521, 274,690, and 281,351. As shown, the thread A<2> on emerging from the bath B is passed in turn over wheels C, D and F to a spinning box H; the wheel D dips in a trough E containing water or other liquid. A modified apparatus in which the wheels D, F are in a plane at rightangles to the plane of the wheel C is described also.
Patent GB-120100-A (GB)
Title: Improvements in or relating to Spectacle Glasses.
Inventor: JONES FRANK
IPC: G02C7/06
Filed: 1917-10-29
Abstract: 120,100. Jones, F. Oct. 29, 1917. Spectacles.-A lens forspectacles or eye-glasses is provided at its upper part either with a hole or aperture or with a plain portion. The plain portion may be made by grinding or by the insertion of plain or coloured glass in an aperture.
Patent GB-1383488-A (GB)
Title: Card feeding apparatus
IPC: G06K13/103
Filed: 1973-04-03
Abstract: 1383488 Feeding sheets BURROUGHS CORP 3 April 1973 [21 April 1972] 15787/73 Heading B8R Sheets to be fed to a data reading or recording machine by feed rollers 7, 8, Figs. 3 and 4, are separated from the bottom of a pile 83 by a pair of oscillating picker knives 57 having shoulders 71 to engage the edge of the bottom sheet, the knives being mounted on a shaft 19 and being actuated by a solenoid 33 through a torque arm 29, and a control means comprising a photo-electric detector co-operating with a shutter mounted on the shaft de-energizes the solenoid when the knives have advanced the sheet the required distance, regardless of the time taken, which is a function of the height of the pile. The solenoid is adjustable by a member 37, and is provided with a rubber bumper 39. The arm 29 co-operates with a resilient stop 41 including a rubber cushion 51 and a compression spring 49 which effects the return stroke of the knives. The knives are mounted on arms 55 with a tolerance of one degree of freedom of pivoting about an axis extending in feed direction. The pile support plate 59 is provided with apertures 61 for the knives, and has a central depressed portion to which is secured a support member 75 having an inclined surface 81 to support the front part of the centre of the pile. The rollers 7 are driven by a motor.
Patent GB-1457059-A (GB)
Title: Differential amplifier
IPC: H03F1/32
Filed: 1974-04-10
Abstract: 1457059 Transistor differential amplifiers RCA CORPORATION 10 April 1974 [27 April 1973] 15793/74 Heading H3T In an amplifier having first and second transistors 11, 21 of a first conductivity type having their common electrodes coupled to a current supply 13, 23 to form a differential amplifier, their input electrodes are for receiving an input signal at 10b, 20b and their output electrodes are direct coupled to the input electrodes of respective third and fourth transistors 12, 22 of a second opposite conductivity type. The output electrodes of the third and fourth transistors 12, 22 are direct coupled to the common electrodes of the first and second transistors 11, 21, a fifth transistor 16 of the second conductivity type has its input electrode connected to the input electrode of the third transistor 12 and to the output electrode of the first transistor 11 and has its output electrode connected to a load 17 and the common electrodes of the third, fourth and fifth transistors 12, 22, 16 are D.C. connected to a point of fixed potential. As shown a further output transistor 26 is provided feeding a load 27. The current supplies 13, 23 may be PNP transistors providing constant current circuits. In a modification a single current supply may be connected to the emitters of the transistors 11, 21. In an integrated circuit the resistors 15, 18, 25 and 28 may be removed so that the emitters of transistors 12, 16, 22 and 26 are directly connected to earth. The interconnection of transistors 11, 12 and 21, 22 form composite transistors 10 and 20 having bases 10b, 20b, emitters 10e, 20e and collectors 10c, 20c. The composite transistors 10 and 20 predistort V1 and V2 so as to compensate for the distortion caused by non-linearity of the transfer characteristics of common-emitter amplifier transistors 16 and 26. The linearity of the overall transfer characteristic of differential amplifier 5 is also enhanced by the degenerative feedback afforded the composite transistors 10 and 20 by the connection of the respective emitters of transistors 11 and 21 to the collectors of the transistors 12 and 22. The output signal between the collectors of the transistors 16 and 26 are of the same phase as the input signal applied between 10b, 20b. The load circuit may be connected in bridge between the collectors of transistors 16 and 26 which collectors would then be D.C. connected to B + by resistors or the collectoremitter paths of PNP transistors. Field effect transistors may replace the bipolar transistors.
Patent GB-136482-A (GB)
Title: Device for the Prevention of Pocket-picking.
Inventor: BINI FRANCESCO
IPC: A45C13/18
Filed: 1919-06-24
Abstract: 136,482. Bini, F. June 24, 1919. Pockets, retaining articlcs in.-A device for giving warning of an attempt to steal an article from the pocket, by the report of a detonator fixed to the article, comprises a cylindrical metal casing formed of two tubes 1, 2 united by a screw collar 3 through which passes a spring-controlled striker 10 adapted to explode a charge in a chamber 9 formed between a diaphragm 8 and a screwed closing-plug 4 for the upper tube 1, the plug having a number of holes 5 and a clip 6 for attachment to the article. The lower tube 2 is closed by a plug 7 carrying spring fingers 14 to hold the striker 10 in retracted position. The fingers 14 are opened to release the striker by a conical spring-controlled sliding piece 15 passing through the plug 7 and connected by a ring 18 to a chain 19, the other end of which is attached to the clothing by a pin 28 having a screwed retaining-cap 29, the pull on the chain when the article is being taken from the pocket operating the sliding piece 15. The chain 19 passes through a ring 20 secured to the article and through a twopart screwed eyelet 22 in the garment.
Patent GB-381191-A (GB)
Title: Rontgen tube holder proof against high tension and radiation
IPC: H05G1/04
Filed: 1931-06-30
Abstract: 381,191. R÷ntgen tube holders. SIEMENS-REINIGER-VEIFA GES. FUR MEDIZINISCHE TECHNIK, 58, Mohrenstrasse, Berlin. June 30, 1931, No. 16007/32. Convention date, July 8, 1930. Divided on 379,801. [Class 39 (i).] A closed holder affording protection against high potentials and radiations comprises two metal sheathed' insulating members 1, 2 (e.g. of porcelain) slidable with small play over the ends of the tube 18 and united by an earthed metal member 4. Each tubular member 1, 2 is integral with a socket 7, 8 to receive a hightension cable but has no opening other than this and the connection to the metal piece 4. The cable sockets 7, 8 converge towards the centre of the tube and have strengthening webs 9, 10. There is metallic continuity with the metal sheathing over the cables 13. The cathode end 16 is connected up by plugs 15 and the anode end by spring contact with the plate 17. Cooling fluid enters and leaves by a tube 21 through the metal centre 4 as described in Specifiction 379,801 of even date.
Patent GB-1479962-A (GB)
Title: Tape winding device
IPC: B65H18/10
Filed: 1975-03-24
Abstract: 1479962 Binding tapes DEFENCE SECRETARY OF STATE FOR 24 March 1975 [10 April 1974] 16056/74 Heading B8R A device for winding tapes into rolls having square edges comprises a spindle 3 fast with a disc 6, the spindle being driven by a handle 4 via a gearbox 5 and the tape is guided on to a bobbin 1 mounted in the spindle by a guide member 9 mounted pivotally on a shaft 8. The guide member 9 which is biased against the periphery of the roll is provided with a side wall 11 which ensures squareness of the roll ends.
Patent GB-914782-A (GB)
Title: Improvements in and relating to apparatus for the analysis of substances by absorption of radiation
Inventor: MARTIN ALBERT EDWARD
IPC: G01J3/12
Filed: 1958-02-07
Abstract: 914,782. Photo-electric absorption measurements. GRUBB PARSONS & CO. Ltd., Sir HOWARD. Jan. 14, 1959 [Feb. 7, 1958], No. 16127/62. Divided out of 914,781. Class 40 (3).  Relates to apparatus for analysing substances by making absorption measurements in which radiation (ultra-violet, visible or infra-red) from a source 1 is focused over two paths by a lens 27 on to a detector 28, one path serving for measurement and including the sample 26 to be tested and the other path serving for reference purposes and including an adjustable shutter 30, the two paths being rendered operative alternately by a rotating disc shutter 29. In accordance with the invention an interference type filter 24 is included in the measuring path to isolate a wavelength band which is strongly absorbed by the component to be detected in the sample and an interference type filter 25 is included in the reference path to isolate the same wavelength band or a band in the region thereof. If desired, the two filters may be combined to form one filter. The apparatus may function to provide a measurement directly or may operate as a null-balance system with retroactive feed-back from the detector output to control the adjustment of an optical attenuator additional to shutter 30. Separate sources for the two paths may replace the common source 1.
Patent GB-1519652-A (GB)
Title: Hair dryers
IPC: A45D20/08
Filed: 1977-03-09
Abstract: 1519652 Hair dryer GILLETTE CO 9 March 1977 [21 April 1976] 16218/76 Heading A5R [Also in Division F1] A hand held hair dryer comprises a tangential flow for 6, Fig. 2, at least some of the blades 7 of which constitute or carry resistance heating elements to heat air displaced by the fan. The fan blades may be made of an electrically insulating material overwound with wire resistance heating elements, or of a composite resistance heating material and may be connected to the electrical supply through wiper arms 11 and 12 Fig. 1, and slip rings 13 and 14.