baber/WOPTO huggingface dataset:
Patent GB-424197-A (GB)
Title: Improvements in selective detection of radio signals
IPC: H04B1/30
Filed: 1933-08-09
Abstract: 424,197. Valve circuits for wireless reception. RADIO FREQUENCY LABORATORIES, Inc., 708, Main Street, Boonton, New Jersey, U.S.A. Aug. 9, 1933, No. 22281. Convention date, Sept. 14, 1932. [Class 40 (v)] In a wireless receiver the incoming signals and a locally generated wave of the same frequency as the signals and controlled in voltage as a function of signal voltage are impressed on the detector. The purpose of the invention is to improve the discrimination against interference. Fig. 3 shows an amplifier 18 and dynatron oscillator 20 feeding a rectifier 19, the signal output being taken from load resistance 22. The rectifier elements KP provide across load resistance 24, the control voltage which is applied to the grid of the oscillator 20. The control rectifier is bias delayed to be inoperative until the signal exceeds the voltage applied to the anode of the oscillator 20 and cathode of the rectifier 19. In a modification Fig. 4, (not shown), the dynatron oscillator serves additionally as the high frequency amplifier. Fig. 5 shows a modification in which a preliminary high frequency amplifier 31 is used and a gain control rectifier 33 the amplified output of which is applied to resistance 41 to control the bias on the grid of the oscillator 20 thus inhibiting oscillation with weak signals. In this way the audio output is suppressed when the signal falls below a pre-determined level. The Specification gives curves of the discrimination obtained with linear and square low detectors for different ratios of signal and local oscillator voltages and a mathematical analysis of the detector characteristic necessary for maximum discrimination. Fig. 7 shows a detector circuit in which an improved discrimination is obtained by controlling the bias applied to a grid in a diode detector. Fig. 8 shows a further circuit in which the outputs of a linear and square law detector are combined to improve the characteristic. The Specification as open to inspection under Sect. 91 comprises also a modification, Fig. 5, (Cancelled), in which the local oscillator 12 is locked into step with the input signal over condenser 15. In a further modification the local oscillation consists of filtered and amplified carrier frequency energy, Fig. 9, (Cancelled and not shown). This subjectmatter does not appear in the Specification as accepted.
Patent GB-423867-A (GB)
Title: Improvements in or relating to display devices
IPC: B65D25/54
Filed: 1933-08-09
Abstract: 423,867. Cans for display purposes. SUTCLIFFE, T. C., 10, Charterhouse Street, London. Aug. 9, 1933, No. 22316. [Classes 66, 94 (i), and 125 (i)] A display device intended to simulate a foodstuff can formed with a transparent end portion for inspection of the contents comprises a glass container 1 disposed within a can which has one end 5 cut-away, so that the contents of the container are visible through the base 3. After insertion of the container the other end of the can is closed by a seamed-on end part 4 or by a screw cap or other detachable closure. The cut-away end 5 may consist of a flanged jointed locking ring. Packing material 8 may be provided between the base of the container and the end 5 and when the container is shorter than the can a resilient packing plate may be disposed between the mouth of the container and the end 4. The container is formed with shoulders 10 to compress the contents against the base, and the stopper 11 may be forced inwardly during the closuring operation to reduce the air space to avoid the formation of bubbles.
Patent GB-1347753-A (GB)
Title: Fluid flow regulating valve
IPC: G05D7/01
Filed: 1971-04-19
Abstract: 1347753 Valves INDUSTRIE-WERKE KARLSRUHE AUGSBURG AG 19 April 1971 [24 April 1970] 22372/71 Heading F2V A flow regulator has a main closure member 3, 4 biased by return spring 22 into abutment with stem 23 of a diaphragm 5 responsive, via conduits 11, 14, to the pressure drop across an orifice defined by seat 2 and an adjustable throttling member 7. The diaphragm is adjustably biased at 28, and the main closure member is pressure balanced by provision of apertures at 16, 17.
Patent GB-679552-A (GB)
Title: Improvements relating to methods and apparatus for grinding, crushing and disintegrating
IPC: B02C17/00
Filed: 1949-08-29
Abstract: Pigments or fillers are milled in ball mills with sand, i.e. a collection of non-metallic particles the average granular size of which does not exceed 1/10th of an inch in diameter (see Group II) so as to reduce their particle size and thus improve the properties of hiding power and tinting strength.  In one example, the raw pigment product obtained by calcining precipitated titanium oxide pulp is first subjected to a preliminary rough reduction, e.g. in a rotary hammer mill, and then subjected to dry or wet milling in the ball mill.  In another example, previously-ground red iron oxide is subjected to wet milling in the ball mill.  In the case of wet milling, the pigment is milled in the form of a dispersion in water, the milling operation being carried out in the presence of a wetting agent, e.g. sodium hexameta phosphate.ALSO:In ball mills for milling pigments or fillers so as to reduce their particle size and thus improve the properties of hiding power and tinting strength, the grinding medium comprises a sand, i.e. a collection of non-metallic particles the average granule size of which does not exceed 1 10 of an inch in diameter. The granule size is preferably within the range 50m  to 150m , and, preferably, zircon sand is used.  In one example, the raw pigment product obtained by calcining precipitated titanium oxide pulp is first subjected to a preliminary rough reduction, e.g. in a rotary hammer mill, and then subjected to dry or wet milling in the ball mill.  In another example, previously-ground red iron oxide is subjected to wet milling in the ball mill.  In the case of wet milling, the pigment is milled in the form of a dispersion in water, the milling operation being carried out in the presence of a wetting agent, e.g. sodium hexameta phosphate.
Patent GB-802131-A (GB)
Title: Improvements in or relating to automatic teleprinter exchange systems
Inventor: WILSON MICHAEL THAIN
IPC: H04L12/14
Filed: 1956-07-20
Abstract: 802,131. Telegraph exchange systems. STANDARD TELEPHONES & CABLES, Ltd. July 20, 1956, No. 22487/56. Class 40 (3). In a teleprinter exchange system, metering equipment at the exchange operates to detect a service engaged condition comprising a long signal of one polarity followed by another long signal of the opposite polarity to prevent metering which takes place if the call is completed. The long signals have a duration substantially greater than the time period of the start and code elements of a character. When a call is initiated, a relay B (not shown) operates, and at contact b energizes relay MS/3 which locks up over b1 and ms1. At contact ms2, relay DA/2 is operated, but relay MS/3 holds over contacts b1, d1. The setting up of the call proceeds in the usual manner until the relay H (not shown) of the final selector operates, and a mark signal is applied to the S wire until the called subscriber answers. Relay X/1 operates and at contact x1 energizes relay D/4 which locks up. Relay DA/2 is still held over d3 and da1. Meter pulses are continuously produced at the calling exchange, but with contact ms3 open, the meter circuit M is open. The mark signal prepares the calling station for operation. Actua- D MS tion of relay - opens the circuit of - which 4 3 is slow to release. On its release the meter relay MS M operates and relay - cannot reoperate. If 3 the called line is engaged, relay H does not operate, but the usual relay G (not shown) operates and at contact g1 connects the S wire to a signal generator producing mark and space signals of x, y m.secs. respectively. As previ- MS DA ously indicated, - and - are in operated 3 2 condition, and the signal from the generator X D operates - so that - is operated. Relays 1 4 X D - and - function as a discriminating circuit 1 4 for detecting the service signal. The release MS time of relay - is greater than 3 m.secs., and is less than (x + y) m.secs. At the end of x m.secs. the service signal which changes to space for y m.secs. opens the circuit of DA relay - which has a release time of less than 2 y m.secs. and therefore falls off. The release of DA MS relay - prevents the release of relay - which 2 3 is held operated over contacts b1, ms1 and da2. DA MS Relay - cannot reoperate and relay - re- 2 3 mains operated so that with contact ms3 open, metering cannot take place. A service character combination follows the space signal and is printed on the teleprinter of the calling subscriber. The duration of the space signal (e.g. 120 m.secs. or more) is such that the calling teleprinter does not print a false or incorrect character during the reception of this signal.
Patent GB-716036-A (GB)
Title: Improvements relating to pirns and bobbins
Inventor: MERCER FRANK BRIAN
IPC: B65H75/18
Filed: 1951-09-27
Abstract: 716,036. Bobbins. WILSON BROS. BOBBIN CO., Ltd. Sept. 29, 1952 [Sept. 27, 1951], No. 22598/51. Class 120(3) A pirn or bobbin comprises a core of wood, metal, or paper on to which has been shrunk a tube of thermoplastic material, e.g: cellulose acetate or celluloid, forming a non-detachable sheath. As shown, a tube d is softened by heating with hot water' or by application of a softener, e.g. a mixture of alcohol, acetone, and water at a temperature of 65-75 ‹F if the tube is of cellulose acetate, and air is blown through a hollow wood core a, having metallic ends b and c, into the tube d, which is sealed at one end, as the core is introduced from the other end of the tube: if the core is solid, air is blown through the tube from one end while the core is introduced from the other end, the air expanding the tube sufficiently to permit its escape over the core. When the air pressure is released and the tube is cooled and/or dried, it shrinks on to the core. Surplus tubing as at c and f is trimmed. If a large expansion of the tube is required, e.g. on a conically ended core or if the tube is of celluloid, the tube may be expanded in a die, e.g. by blowing steam into it, or on a former to the approximate form of the pirn on to which it is then allowed to shrink. Worn bobbins may be reclaimed by the provision of an additional non- detachable sheath.
Patent GB-366426-A (GB)
Title: Improvements in and relating to road rollers
IPC: E01C19/23
Filed: 1931-08-10
Abstract: 366,426. Road rollers. HUNTLEY, DE W. C., Route 1, Box 183B, Tucson, Arizona, U.S.A. Aug. 10, 1931, No. 22613. [Class 6 (i).] In a road roller comprising rollers arranged one behind another, each roller is made up of a number of relatively narrow units, the units of each being aligned with spaces between the units of the other, and means being provided whereby units in each roller may be brought into contact with one another. A tractor body 10 is mounted on two rollers 19, 25, the front roller being mounted in a swivelling fork connected to steering-mechanism. The equally spaced narrow roller units 18a, 24 are respectively adjustably secured on hollow shafts 18, 23 surrounding axles 11, 12 by screws 20, the units on each shaft being opposite spaces between the units on the other. The roller units 24 may be moved into contact with one another in two groups to form two end rollers on the shaft 23, and the roller units 18a may be moved into contact to form one wide roller on the shaft 18. In a modification the two rollers 19, 25 are made up of corrugated metal riveted to a hollow shaft. The roller units may be of other shapes, such as shown in Fig. 8. The units may be adjustable along screw threads 42, Fig. 9, on a hollow shaft 40, being secured in place by blocks 43 movable in slots in the units 41 and into and out of slots or sockets in the shaft 40 by screws 46.
Patent GB-467708-A (GB)
Title: Improvements in or relating to the cold rolling of strip metal
IPC: B21B37/48
Filed: 1936-08-17
Abstract: 467,708. Control of several motors. WILLIAMS, W. P. (American Rolling Mill Co.) Aug. 17, 1936, No. 22667. [Class 38 (iii)] [Also in Groups XXII and XXXV] In cold rolling a strip in a series of rolls M with tensioners T between each mill or group of mills, the tensioners T have a constant pull and are coupled to the rheostats of the corresponding mill motors or to puller motors so that there is a constant positive difference between the tension in the strip on the outgoing side and the tension of an incoming side of the mill or group of mills. A puller may be located beyond the final mill which exerts a tension not less than the sum of all the differences in tension on each side of each individual mill or group. The strip is comprised of shorter strips joined end to end by a welder 51, and trimmed by a flash cutter, and forms a free loop 53 before back tension is applied as it proceeds to the mill. At the exit the strip is sheared into length and coiled up. Each strip tensioner T comprises three rollers 12, 13, 14, Fig. 6, the roller 14 being urged up into the loop of the strip by an adjustable weight or an adjustable pressure hydraulic cylinder 19 to take up any slack to maintain the tension. As the roller 14 moves up or down, a cable 27, Fig. 6, attached at one end thereto rotates a sprocket 36, Fig. 8, which chain drives a rheostat 45 so controlling the mill motor or the motor of the strip puller. The sprocket 36 has a lost motion gap for the drive pin 35. A hand wheel 43 can also be operated to declutch the chain drive 39 and operate the rheostat as desired. To thread the strip through the mill the cable 27 is slackened off to lower the tensioning roller 14 to allow the strip to be threaded through. Fig. 10 shows the electrical drive controls in which a motor G drives a generator H supplying current to all the mill motors A<1>, B<1>, &c. and to the motor F<1> of the strip puller P. The operator at 40 operates hand wheel 21 of rheostat 343 of motor F<1> and so controls the tension pull and control of motor F<1> also in turn controls the speed of all the other motors in the train automatically through the action of the tension take-up devices T. By opening a switch 345 the trip breaker 902 stops the puller motor F<1>. If the strip breaks, e.g. at the switch SS3 it trips the circuit-breaker 502 of mill motor A<1> and also through leads 314 trips breaker 602 stopping the motor B<1> and so on so that all mill rolls preceding the break stop. The operator 40, however, operating switch 1100 closes electromagnetic circuit to hold closed the switches SS2 &c. while the mill is being threaded. The operator adjusts a rheostat 1001 to control the exciter K which controls the voltage applied by the generator H to all the mill motors A<1> &c. while each static tensioner T superimposes an individual control of the speed of the corresponding mill motor. An indicator light 403 is connected with the main breaker 401. Specification 6048/11, [Class 38 (iii)], is referred to.
Patent GB-990802-A (GB)
Title: Improvements in or relating to electric plug and socket connectors
IPC: H01R13/527
Filed: 1962-06-13
Abstract: 990,802. Two part couplings. HOLLANDSCHE DRAAD-EN KABELFABRIEK N.V. June 13, 1962 [June 13, 1961], No. 22764/62. Heading H2E. In a plug-and-socket connector for use in explosive atmospheres means are provided for locking the connector parts against axial separation with the contacts sufficiently spaced apart to prevent arcing between them so that in the event of an explosion within the connector the connector parts are not blown completely apart and the hot gases are forced to follow a tortuous path to the outside and are thereby cooled before escaping. In the embodiment co-operating plug and socket sleeves 1 and 9c are formed respectively with complementary stepped projections and recesses 13 and 14 (Fig. 5) formed to ensure correct coupling and permitting locking of the connector parts at various stages of axial separation. Each of the sleeves 1 and 9c contains contact carrying resilient blocks which deform on full connection of the connector parts to form a moisture seal and the sleeve 1 of the plug part and the sleeve 9b rotatably connected to sleeve 9c of the socket part are each formed with a flange which coacts with complementary coned ferrules 5 to wedge the cable braid 6 therebetween. The rotatable connection between sleeves 9b and 9c may include a co-operating pin and slot (Fig. 3, not shown) with the slot length chosen to control the required rotation of the sleeve 9c relative to the body of the socket part.
Patent GB-1120121-A (GB)
Title: Fluid-flow control valves
IPC: F16K1/36
Filed: 1965-05-28
Abstract: 1,120,121. Valves. SLOAN VALVE CO. 28 May, 1965 [6 Jan., 1965], No. 22850/65. Heading F2V. Flow between an inlet 7 and an outlet 6 is controlled by a moving closure member 15 with a bi-conical surface 16, 17, the latter part co-operating with a seat 9. The member 15 incorporates a stem 18 which is splined 20 to sleeve 21 clamped between a bonnet 8 and the brass valve body 5; an 0-ring 36 is disposed between the stem and sleeve whilst the main end of the latter defines the open position of the member 15. A rod 30 is threaded into the stem 18 and is mounted for rotational movement only by a collar 33 between the bonnet and sleeve. Beyond the rod 30 is an operating knob 31. An annular groove 40 is provided in the end face of the member 15 to quieten the fluid flow. The member 15 stem 18 and sleeve 21 are of plastics material, such as nylon. In a modification the splines are below the 0-ring and open to the fluid flowing through the valve; the valve is operable by a screw-driver.
Patent GB-643786-A (GB)
Title: Improvements in or relating to electro-acoustic transducers
Inventor: ROBERTON JAMES SAMUEL PATERSON
IPC: H04R1/22
Filed: 1947-08-18
Abstract: 643,786. Sound-reproducing devices. STANDARD TELEPHONES & CABLES, Ltd. Aug. 18, 1947, No. 22883. [Class 40 (iv)] In an electro-acoustic transducer such as an earpiece the diaphragm 5 is held at its periphery by magnetic attraction only to the annular top of a cylindrical frame 4 containing the magnetic circuit and operating coils, and the frame is clamped by a shoulder 8 between the earcap and a resilient pad 15 on the inside of the back cover 11. The junction between the earcap and the shoulder 8 also serves to clamp a hat-shaped membrane 9 which prevents the ingress of dirt. To give the diaphragm added acoustic stiffness, air chambers are provided on both sides of the diaphragm; the chamber at the back communicating with a larger space around the windings &c. by way of holes covered with a material such as silk to give added acoustic resistance. A modification, Fig. 6, has a flatrnembrane 9 clamped between the earcap and a brass spacing collar 14<SP>1</SP>. The windings 3 are connected to terminals 16 on a flat surface of the back cover 11.
Patent GB-1187348-A (GB)
Title: New Amidoximes and process for the preparation thereof
IPC: C07D209/18
Filed: 1968-05-14
Abstract: 1,187,348. Antipyretic &c. compositions. CHINOIN GYOGYSZER-ES VEGYESZETI TERMEKEK GYARA R.T. 14 May, 1968 [6 June, 1967], No. 22891/68. Heading A5B. [Also in Division C2]  Therapeutic compositions having antiphlogistic, antipyretic and analgesic activity comprise compounds of formula:  and their salts, wherein R is optionally substituted indolyl, benzimidazolyl, benzoxalyl benzotriazolyl, benzothiazolyl, indazolyl, benzisothiazolyl, pyrimido-imidazolyl, isoquinolyl, quinoxalyl, quinazolyl or benzotriazinyl, in which the heterocyclic rings may be hydrogenated and may contain a C=O or C=S group, Z is CH 2  or CHPh, and n is 0, 1 or 2. Oral, parenteral and rectal administration are mentioned. The compounds may be used with other active compounds, e.g. Example 6 describes a combination of 6, 7-dimethoxy-3, 4- dihydroisoquinolyl-1-acetamidoxime monohydrate and 1-phenyl-2, 3-dimethyl-4-dimethylaminopyrazolone-5.
Patent GB-628361-A (GB)
Title: Improvements in or relating to face powder boxes
IPC: A45D33/00
Filed: 1947-08-18
Abstract: 628,361. Powder-boxes. SCHALL, J. Aug. 18, 1947, No. 22920. [Class 18] Powder in a face-powder box is contained between a spring-supported false bottom 14 and a perforated disc 20. The disc is bordered by an axially directed cylindrical flange 22, in turn bordered by a radially outwardly directed peripheral flange 23 nearer the box-bottom. An upstanding flange 19 of a loose plate 18 surrounds the false bottom 14. An intermediate hinged portion 12, secured by a channel shaped hoop 31 engaging pins on the box bottom has a flange which, in the closed position surrounds the axial flange 22 of the disc. A labyrinth for sealing the powder is thus formed by the flanges of the loose plate 18, the disc 20, and the intermediate portion 12. Slots 24 are provided in the periphery 23 of the disc, and engage a toothed wheel 25 for rotating the disc. A lid is hinged to the box and is held closed by a spring-pressed plunger 33.
Patent GB-859780-A (GB)
Title: Improvements in power operated presses
IPC: C14B1/30
Filed: 1957-07-19
Abstract: 859,780. Drying skins &c. HORN, McCULLAGH & CO. Ltd., and HORN, J. R. J. Oct. 20, 1958 [July 19, 1957], No. 22950/57. Class 34(2) Moisture is pressed from wet skins &c. by placing the skins between inflatable bolsters which are subsequently inflated. A press for treating batches of skins 20 comprises a base 7, Fig. 3, cross-members 6, side frames 5, 5 and rails 8, 8 upon which run wheels mounted on shafts 10, 10 adapted to carry the head of the press, constituted by members 11, 12, from " press charging " to " press operating " positions denoted in Fig. 1 by dash and full lines respectively. Located between the base 7 and the head is a series of superimposed plates 14 between each of which is a pneumatic bolster 15 connected by a flexible pipe 16 to a manifold 17 supplied with pressure fluid, e.g. air, from a pipe 18 through a valve 19.
Patent GB-1145725-A (GB)
Title: Electric shaver having combined switch and head removal actuator
IPC: B26B19/38
Filed: 1967-05-17
Abstract: 1,145,725. Dry shavers. SUNBEAM CORP. 17 May, 1967 [28 Nov., 1966], No. 22984/67. Heading B4B. [Also in Division H1] An electric shaver has a housing 12 enclosing an electric motor 13 and a shaving head 25 detachably secured to the housing, the head 25 including a head frame 26 supporting a fixed shearing comb 27, movable shearing cutters 28 driven by the motor in shearing engagement with the comb, switch means 42 supported on the housing to close and open the circuit to the motor, and a movable latch 36 and a fixed abutment 39 on the housing, the switch means including an actuator 49 for moving the latch to detach the head frame from the housing. The actuator 49 is manually slidable by means of a button 49a, the actuator having a first position in which the circuit to the motor is closed, a second position in which the circuit to the motor is open and a third position in which the latch is operated to detach the head frame from the shaver housing. The latch is in the form of a spring, the free end 36b of which is engageable by an extension 49e of the actuator to move it out of engagement with the abutment 39. An indicia plate 52 has a slot 52b through which the actuator button 49a extends. The shaving head also includes a long hair clipper 30 driven by linkage 31 from the motor 13.
Patent GB-614824-A (GB)
Title: Improvements in or relating to water spraying and like sprinkling devices
IPC: B05B1/32
Filed: 1946-08-01
Abstract: 614,824. Nozzles. GISSING, M. T. Aug. 1, 1946, No. 23026. [Class 69 (iii)] A water spraying and sprinkling device, comprising a chamber 1, the internal configuration of which is cylindrical, having an inlet 2 arranged tangentially to the inner peripheral wall 3. A series of outlets 4, 5 and 6 are provided near the centre of the circular face 7 of the chamber 1. Mounted upon the face 7 is a slidable member 8 provided with an orifice 11 so arranged that it may be brought above the holes 4, 5 and 6 of the chamber, one at a time, thus varying the size of the jets. The chamber and member 8 may be of conical, spherical or hemispherical configuration instead of cylindrical.