baber/WOPTO huggingface dataset:
Patent GB-210872-A (GB)
Title: Improvements in and connected with press-moulding apparatus for the manufacture of cylindrical and like objects from concrete and other compressible material
IPC: B28B21/26
Filed: 1922-11-08
Abstract: 210,872. Maggio, V. Nov. 8, 1922. Moulding pipes and tubes.-Relates to apparatus for moulding concrete pipes, columns and other cylindrical objects, of the type comprising a mould and a presser fitted with helical parts, the mould and presser being relatively rotatable, and comprises a presser of cylindrical form with segments removed to provide longitudinal limbs separated by apertures which serve for the introduction of the material into the mould. Fig. 8 shows a machine for socketted pipes, comprising a fixed mould 8 and a presser having longitudinal limbs 1 terminating in helical pressing feet 2. A hollow core 9 extends into the mould within the presser and houses a driving- shaft 6 adapted to be connected to the presser by a pin 7 &c. The mould is formed of separable parts mounted upon a bottom 12 supported upon a base plate 11 furnished with cleats 13. In operation, the core 9 is introduced into the mould and the presser lowered therein; a hopper is fitted to the upper part of the mould and the material introduced therein; after which the shaft 6 is revolved and turns and rises with the presser, the material passing through the apertures between the limbs 1. When the presser rises clear of the mould, the shaft 6 is stopped, the pin 7 is disconnected and the presser is hoisted bv a hook 5. The shaft 6 is then withdrawn and the core 9 actuated to smooth the interior of the pipe &c. after which it is withdrawn, the mould is opened and the article removed from the plate 12. The feet 2 may be furnished with renewable wear pieces, 20, Fig. 13, and with a vertically-adjustable scoring- device 18. Fig. 14 shows a presser furnished with a duct 21 through which a reinforcing-wire 19 is fed. Shutters 3, Fig. 6, may close the presser apertures on the interior to protect the core 9 from the material and similar exterior shutters 3<a> may be provided to protect the mould surface.
Patent GB-706309-A (GB)
Title: Feed mechanism for machines for manufacturing sliding clasp fasteners
IPC: A44B19/48
Filed: 1952-12-03
Abstract: 706,309. Making sliding-clasp fasteners. HENDRICKX, L., and ROSSHANDLER, O. Dec. 3, 1952 [Dec. 3, 1951], No. 30662/52. Classes 83 (2) and 83 (4) Shearing; stamping.-In a machine for making sliding-clasp fasteners a strip 1 is shaped by a punch 7 actuated by a cam 10 and a die 6 whilst held by clamps 2, 4. The strip is fed by a detent 21 on a bellcrank 11 actuated by a cam 20. A cam 16 actuates a lever 13 controlling a punch 14 which separates a fastener 24 from the strip and pushes it into a guide 26 from which it is fed for application to a tape 33 by an arm 27 actuated by a spring 31 and cam 28.
Patent GB-173483-A (GB)
Title: Improvements in and relating to telephones
IPC: H04B3/04
Filed: 1921-11-18
Abstract: 173,483. Siemens & Halske Akt.-Ges. Dec. 29 1920, [Convention date]. Drawings to Specification. Repeating and amplifying systems; speech wave components, equalizing attenuation of. - In telephone systems in which the variable line attenuation of different frequencies is compensated by variable amplification by thermionic valves or other amplifiers, the secondary winding of the amplifying transformer is tuned to the higher accustic frequencies and the impedance of the primary is adjusted to be greater or less than that usually employed for optimum amplification. The phase angle between the line and the primary of the transformer may, for the same purpose, be altered by the insertion of inductance or capacity in series or in parallel with the line. When several transformers are used the resultant amplification may be adjusted to compensate for the attenuation by selecting different frequencies for different transformers. In the manufacture of transformers the secondaries are constructed to have a natural frequency higher than that required, and this frequency is then reduced by the connection of condensers in parallel. Specification 154,925 is referred to.
Patent GB-1147098-A (GB)
Title: Process and system for handling bulky elements
Inventor: RENAUDON MARIE MICHEL FERNAND
IPC: B60V3/04
Filed: 1967-07-05
Abstract: 1,147,098. Air cushion vehicles. BERTIN ET COMPAGNIE. 5 July, 1967 [7 July, 1966], No. 30886/67. Heading B7K. Apparatus for conveying prefabricated sections 1 of a track or road surface 4 comprises a hollow chassis or base member 2 formed with longitudinal and transverse flexible skirts 11 and 12 to enclose an air cushion 5 supplied through a flexible conduit 8 from a compressor 6 on a tractor 7, the tractor being connected to the member 2 for propulsion thereof by a coupling mechanism 20, 23 incorporating a linkwork 22 to allow for variations in spacing. The member 2 carries brackets 16, 17 provided with guiding rollers 18 which engage the sides of the section 4 and the skirts 11 are urged into contact with such sides by spring-urged pads 14, or inflatable edge members 15. Propulsion may be by jacks (not shown) or by running the tractor along the track 4.
Patent GB-489216-A (GB)
Title: Improvements in devices for damping valves actuating impacts in internal combustion engines
IPC: F01L1/16
Filed: 1937-11-10
Abstract: 489,216. Valve gear. ZAVODY RING HOFFER-TATRA AKCIOVA SPOLECNOST. Nov. 10, 1937, No. 30890. Convention date. Nov. 20, 1936. [Class 7 (vi)] Impact between a tappet 4 and valve stem 2 is silenced by a film of oil drawn up by suction to the enlarged contacting surfaces through passages 6, 8, provided with a ball valve 7 for preventing return of the oil. The oil is distributed over the contacting surface by grooves 5.
Patent GB-642691-A (GB)
Title: Improvements in or relating to electric wave filters
Inventor: PRIOR HECTOR THOMAS
IPC: H03H9/54
Filed: 1947-11-21
Abstract: 642,691. Electric filters. STANDARD TELEPHONES & CABLES, Ltd. Nov. 21, 1947, No. 30933. [Class 40 (viii)] An electric filter consists of one or more crystal element sections, having image impedances of the m-derived type, connected in tandem, and terminated at each end by a coil and condenser network having prototype image impedance facing the crystal section, the latter having a cut-off frequency which lies between the specified pass-band of the filter and the corresponding cut-off frequency of the coil and condenser network. In an example, crystal sections 1 and 2 have m-derived type impedance and are terminated at one end by a half-section 3 of ladder type coil and condenser filter having prototype impedance facing section 2 and mtype impedance at the other end. The other end is terminated by two ladder sections 4 and 5 having prototype impedance and a half ladder section 6 with prototype impedance facing section 5 and m-derived type impedance at the other end. In its simplest form the filter would consist only of sections 6, 1 and 3.
Patent GB-1206539-A (GB)
Title: Cleaning a fur brush
IPC: G03G21/00
Filed: 1968-06-28
Abstract: 1,206,539. Dry cleaning. RANK XEROX Ltd. 28 June, 1968, No. 30959/68. Heading D1P. A fur brush is cleaned by the successive steps of (a) blowing with air, (b) immersing in a dry cleaning solvent subjected to ultrasonic vibrations, (c) squeegeeing, and (d) spindrying. A plurality of brushes may be treated in succession. As shown, each brush is fed from a hopper 11 through a chute 12 (at station A) wherein soil is removed from the inside of the core support of the brush by a jet of air from a pipe 14. It is then conveyed on a belt 13 (a) through a chamber 15 (at station B) wherein loose soil on the fur is removed by an air stream at a pressure of 60-80 psi; (b) through a container 20 (at station C) containing dry cleaning solvent and equipped with a transducer operating a 20- 40 kilocycles/sec, cooling coils 25 and squeegee means 27-28, the immersion time being 10-30 sec; (c) to a closed housing 35 (at station D) wherein it is spin-dried at 3,000-4,000 rv/min, the direction of spinning being reversed half way through. Used bath solvent and spun-off solvent are recycled to the bath via a pump 41 and a filtering and distilling unit 40. The brush may be of rabbit fur glued to a kraft paper core and may have been contaminated with xerographic printing resin. The dry cleaning solvent may be trichlorethylene, benzene, trichlorethanol, or ethanol/carbon tetrachloride (depending on the nature of the resin).
Patent GB-465728-A (GB)
Title: Improved method of and apparatus for manufacturing links for v-belting from sheet material
IPC: C14B5/04
Filed: 1935-11-09
Abstract: 465,728. Making links for V-belting. EVANS, P. T., BRAMMER, H., and WRIGHT, J. H. Nov. 9, 1935, No. 31033. [Classes 31 (i) and 31 (ii)] Tapered links having bevelled longitudinal edges are made by cutting a strip of material transversely at an angle to its surface and cutting the pieces so formed at a reverse angle to the surface and at an angle to their ends, and then punching and finally shaping the blank links so formed. A strip of material is fed over a feed plate 36, secured to an inclined table 25, and is cut into pieces with bevelled edges by a driven rotary disc cutter 15, which is moved across the strip by depression of a treadle to operate a chain 20 against a spring. The table is pivoted at 29 and is adjustable by quadrants 28 being clamped by screws 32 and nuts 31 ; rods 34, 35 are provided to give predetermined adjustments. The feed plate 36, Fig. 7, is provided with an adjustable edge guide 40 and an adjustable end stop 44, being held down by members 43. The cutter carriage 13 slides on rods 8, and is adjustable vertically by screws 11. For cutting the pieces into two, a holder 50, Fig. 8, is secured to the table 25 ; the piece is enclosed by members 54 and after severance the blank links are removed automatically by an arm on the cutter carriage. Two holders which are moved to cutting position alternately may be provided. The punching apparatus comprises a die 66, Fig. 13, to punch and shape the blank link to the form shown in Fig. 11. The die is carried by a lever 67 operated by a treadle 78 through a link 77a, lever 76 and roll 77 ; stops 79, 81 are provided. The holder 68 for the link is provided with an ejector 84 and may be duplicated. In a modification, two dies are provided and operated by a power driven arm as in a clicking press. Specification 340,065, [Group XXIV], is referred to.
Patent GB-299879-A (GB)
Title: Improvements in and relating to the casting of hollow bodies
IPC: B22C9/10
Filed: 1928-10-26
Abstract: 299,879. B³hler, G. Nov. 4, 1927, [Convention date]. Tubes of bronze, containing 90-92 parts of copper and 10-8 parts of tin, are made by drawing thick walled tubes cast in chill moulds with resilient cores constructed as described in Specification 299,878, [Class 83 (i), Casting &c. metals]. The moulds 1 are of cast iron and each has an overflow 12, a pouring block 9, with ribs 90 to centre the core 8, and a plug 3 adapted to support the lower end of the core. Eight moulds 1, Fig. 2, are clamped together, with planed faces 14 abutting, by bolts through lugs 13 and clamped to a common base by two bolts through lugs 16. Two bands are also clamped around the moulds, the stronger one being arranged between the ribs 2, Fig. 1, and the weaker lower down. This construction including the varied wall thickness of the moulds as shown in Fig. 1 is stated to ensure uniform cooling. All the moulds are filled through a common funnel in 15 to 20 seconds.
Patent GB-602430-A (GB)
Title: Improvements in or relating to electric switches with roller contacts
IPC: H01H1/16
Filed: 1945-11-20
Abstract: 602,430. Snap-action switches. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN. Nov. 20, 1945, No. 31205. Convention date, July 13, 1940. [Class 38 (v)] In a switch with a movable contact in the form of a roller 4, the roller is adapted to become disengaged from a contact 17 which engages the end of the roller before it becomes disengaged from a, " sparking " contact 16 which engages the periphery of the roller. In the form shown, there are two pairs of contacts 16, 17, the contacts 17 being resilient and engaging the ends of a rigid roller. In a modification, the roller consists of two halves pressed apart by a spring and engaging two rigid contacts 17. The subject-matter is identical with that of Specification 545,567.
Patent GB-1210848-A (GB)
Title: 2-imino-methyleneimines
Inventor: POOS GEORGE IRELAND
IPC: C07D207/22
Filed: 1968-07-01
Abstract: 1,210,848. 2 - Iminomethyleneimines. McNEIL LABORATORIES Inc. 1 July, 1968, No. 31253/68. Heading C2C. Novel compounds of the formula the pharmaceutically acceptable salts thereof, wherein Z is (a) -CH(C 6 H 5 ) 2  or (b) -A-lk-R wherein Alk is or a C 1-3  alkylene; R is phenyl, optionally substituted with halogen, C 1-7  alkyl, C 1-7  alkoxy, hydroxy or methylenedioxy; R 1  is C 1-7  alkyl or benzyl; and n is an integer between 3 and 5 are prepared by (a) reacting a compound of formula with NH 2 Z in an organic solvent followed by the liberation of the free compound from the product of this reaction by treatment with a base; or (b) reaction of 1 - R 1  - methyleneimine - 2 - one - lower acetal or a 1-R 1 -2-lower alkylthiomethyleneiminium salt or the phosphorus oxychloride adduct a chloride of 1-R 1 -methyleneimine-2-one with NH 2 Z. Hydroxy containing compounds may be prepared by hydrolysis of the corresponding alkoxy compounds or a hydroxy compound may be alkylated to give the alkoxy compound. Triethyl oxonium fluoroborate is prepared as an intermediate by reaction of BF 3  etherate and epichlorohydrin in ether. The compounds of the invention may be used in oral and parenteral preparations and are found to have anti-inflammatory activity, CNS depressant activity, hypotensive and cardiac stimulating activity, pressor activity and ganglion blocking activity and are found to decrease heart rate without reduction of cardiac output or mechanical work.
Patent GB-406958-A (GB)
Title: Process for the production of metallic magnesium
IPC: C22B26/22
Filed: 1933-11-09
Abstract: In a modification of the process described in the parent Specification the magnesium dust is converted into compact metal by distillation in the presence of an inert or reducing gas at atmospheric or increased pressure.
Patent GB-671305-A (GB)
Title: Improvements in high input impedance transistor amplifiers
IPC: H03F1/56
Filed: 1949-12-06
Abstract: 671,305. Semi-conductor amplifiers. RADIO CORPORATION OF AMERICA. Dec. 6, 1949 [Dec. 30, 1948], No. 31273/49. Class 40 (iv). An amplifier circuit comprises a transistor having a first network connected between the base electrode and one of the other electrodes, and a second network between the emitter and collector electrodes, the input being applied between the base electrode and one of the other electrodes, and an output connection being made to the second network. Fig. 2 shows a transistor arrangement comprising a block of N-type semi-conducting material 1 with base 4, emitter 2 and collector 6 electrodes and bias sources 5 and 6. The emitter and collector electrodes are connected by a resistance 14 and blocking condenser 13, and resistance 10 is connected in series with the bias source between the collector and base electrodes. Input signals from source 8 are applied between base and emitter electrodes, and the amplified output signal is taken from between a tap on resistance 14 and the base electrode. Alternative arrangements are described in which, in place of resistance 10, a resistance is connected either in series or in parallel with the signal source 8 between the base and emitter electrodes. It is shown that the input impedance is increased by these arrangements, allowing higher gain. Negative input,resistance may be avoided by selecting the value of the additional resistance.
Patent GB-1600021-A (GB)
Title: Electrical inter-connection method and apparatus
IPC: B23K9/00
Filed: 1977-07-26
Abstract: To permit ball-bonding of wires of aluminium or aluminium alloy to small electrical circuits or components, a spark discharge is created between the end of the wire and an electrode in a shielding atmosphere with a peak current density in the wire section which is from 40 to 450 times that used for ball-bonding gold wire. In this way oxidation of the ball is prevented.
Patent GB-142413-A (GB)
Title: Improvements in or relating to presses for tennis and like racquets
IPC: A63B60/44
Filed: 1919-12-15
Abstract: 142,413. Trimmings, A. E. Dec. 15, 1919. Racket presses.-Comprises two or more trued surfaces a, b spaced apart by distancepieces c, d which are shaped so as to limit the movement of spring clamps e. These clamps are mounted pivotally at f between each pair of surfaces, and are adapted to grip each side of the racket frame j and retain the frame against one of the trued surfaces.
Patent GB-804454-A (GB)
Title: Improvements in or relating to hoisting or the like hooks
IPC: B66C1/36
Filed: 1956-10-16
Abstract: 804,454. Hooks. CRUSE, W. H., and CRUSE, H. A. Nov. 16, 1956 [Oct. 16, 1956], No. 31428/56. Class 89(2) A lifting-hook comprises a body 5 suspended by a swivellink 8 and having a lug 11 to which is pivoted an arm 10 adapted to engage, with its free-end, the point 6 of the body. The arm comprises a hollow-part 9 containing a plunger 13 urged by a spring 14 to engage a projection 16 on the point, to prevent accidental opening of the hook. The plunger is withdrawn by sliding a screw-head 15. In another arrangement, the arm comprises a rod pivoted to lug 11 and fitting within a tube slidable thereon, and spring-urged to engage the point.
Patent GB-969589-A (GB)
Title: Improvements in artificial flowers
Inventor: BAO LIU
IPC: A41G1/00
Filed: 1962-08-16
Abstract: 969,589. Artificial flowers. WILLIAM CHANDLER & CO. Ltd. Aug. 12, 1963 [Aug. 16, 1962], No. 31465/62. Heading A4X. An artificial flower such as a tulip comprises a single plastic petal row moulded to provide petals 5 radiating from a tubular support 4, base portions 6 being roughened by projections 7 to provide extra friction when the flower is made up by threading a stem wire 8 through support 4 and bending the upper end over at 9 to form an enlarged head and fitting over part 4 and base portions 6 the upper end of a tubular sleeve 10 which sheathes the wire and simulates a flower stem.
Patent GB-321803-A (GB)
Title: Improvements in vehicle brake mechanism
IPC: F16D51/50
Filed: 1928-10-30
Abstract: 321,803. Clark, D'A. M., (Bendix Brake Co.). Oct. 30, 1928. Shoes acting on drums.-In a brake comprising a drum and a friction device which anchors at one or other end according to the direction of rotation of the drum, means are provided to force the ends of the friction device against the drum and then to force the ends apart to complete the application of the brake. As shown, brake shoes 14, 16 floating in the drum 10 are connected at their lower ends by a floating expansible joint. At the upper end, each shoe has plates 18, Figs. 1 and 2, welded to opposite sides of its web and projecting on opposite sides of a thrust roller 20, which is mounted on a pivot 22 carried by the plates 18 and projecting into anchor openings 24 in anchor plates 26 mounted on posts 28 carried by a backing plate 12. Springs 42 normally urge the shoe ends towards each other and urge the shoes bodily downwards. The brake is applied by means of a wedge 30 acting on the rollers 20 and pivoted at 32 to a lever 34 on a shaft 36 operated by an arm 38 and a cable or link 40. When the brake is applied, the initial movement of the wedge 30 moves the shoes bodily upwards; when the upper ends of the shoes engage the drum, one or other of the shoes, according to the direction of rotation of the drum, is held by drum friction against its anchorage. Further movement of the applying means then opens out the shoes to apply the brake. Compensating for wear.-At the lower ends of the shoes are welded plates 46 pressed out to form sockets for the ends of a right-and-left threaded adjusting member 48, Fig. 3, and nuts 50 threaded on the member 48 engage openings in the plates 46, so that turning the member 48 separates the shoes to compensate for wear. Conical faces on the nuts 50 engage wedge surfaces on plates 52 floating on posts 54 mounted on the backing plate 12, springs 58, 60 being provided. A ratchet portion 64 on the member 48 is engaged by spring pawls 60, Fig. 4, on the plates 52. When the brake is applied, one or other of the nuts 50 will wedge the plates 52 apart at one. end, separating the pawls 66 against the resistance of one pair of springs 58, 60. If the brake is worn, the pawls will be separated sufficiently to allow them to snap over the next teeth of the ratchet 64, and on the release of the brake the ratchet and the member 48 will be turned by the pawls .to compensate for the wear.
Patent GB-1102749-A (GB)
Title: A light modulator arrangement
IPC: H01S5/026
Filed: 1965-07-23
Abstract: 1,102,749. Semi-conductor devices. HITACHI Ltd. 23 July, 1965 [29 July, 1964], No. 31594/65. Heading H1K. [Also in Division H4] A light beam of specific wavelength which is projected on to the depletion layer of a semiconductor device is modulated in accordance with the variation of the thickness of the depletion layer which is controlled by means of a signal voltage applied across the semi-conductor device, the modulated light which has passed through the deflection layer being detected. Light having the energy ranging from 0.8 to 1.2 times the energy gap of the semi-conductor device may be sufficiently modulated. As shown, Fig. 3, the semi-conductor device 10 comprises a GaAs diode made by diffusing Zn into one surface of a wafer of N-type GaAs to form a P-type layer and by soldering molybdenum electrodes thereon. A depletion layer is formed in the neighbourhood of the PN junction by the reverse bias voltage of source 11, and the thickness of the depletion layer is varied by the signal from the signal source 13. A GaAs laser diode is arranged on one side of the diode 10 separated by an insulating layer 14 and light emitted by the laser diode is directed by means of a reflector 20 to diode 10 and the light which passes therethrough is detected by a photo-cell 21. The transmittivity of the diode 10 is varied by the variable resistor 12. In a second embodiment, Fig. 4, an N-type GaAs base wafer 30 has on one surface P-type diffusion layers 31, 32 and 33, formed by the selective diffusion of Zn and metal electrodes 35, 36 and 37 are attached to these layers by evaporation. In this arrangement diode 31 serves as a light emitting diode, 32 as a modulating diode and 33 as a photo-detector diode. In a third embodiment, Fig. 5, (not shown), instead of using a depletion layer formed by applying a reverse bias, a depletion may be used which is formed in a semi-conductor body by attaching two electrodes thereto, one via an insulating layer, and by applying a bias voltage between them.
Patent GB-536433-A (GB)
Title: Improvements in and relating to the composition and casting of type and in machines therefor
IPC: B41B11/00
Filed: 1939-12-06
Abstract: 536.433. Type-bar-making machines. LINOTYPE & MACHINERY. Ltd., SCOTT, R. H., GORSE, W. F., and HAYWARD, A. S. Dec. 6, 1939, No. 31612. [Class 100 (iii)] Assembling matrices.-To enable one or more lines to be readily cast from hand-set matrices, the first elevator is provided with a rotatable head 1 having two or more line-holding jaws 2, 3, one of which is preferably detachable and is formed as a hand-composing stick. The head 1 is locked with either jaw in casting position by a pair of vertical bolts 8 operated by a handle 11. The detachable jaw 3 has a bevelled portion 23, which is adapted to engage the bevelled lower edge of a plate 12 depending from the elevatorhead. A transverse rod 25 carried by the jaw is engaged under the hooked end of side-plates 13 secured to the head. Spring-pressed bolts 17, sliding in the plates 13, are caused to engage beneath the rod 25, in order to lock the jaw in position. The Provisional Specification refers to Specification 536,432.