baber/WOPTO huggingface dataset:
Patent GB-625258-A (GB)
Title: Improvements in or relating to modulated carrier wave receivers
IPC: H03D5/00
Filed: 1946-02-14
Abstract: 625,258. Valve circuits for radio reception ; phase modulation. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. Feb. 14, 1946, No. 4691. Convention date, Feb. 14, 1945. [Class 40 (v)] In a receiver in which filtered and amplitude limited carrier is combined with the modulated signals to provide exalted carrier detection, an A.F.C. system is provided which derives its control voltage from a discriminator fed with modulated signals and selected carrier. The Figure shows a double detection receiver for short and medium waves. S.W. signals pass through amplifier 2, first converter 4, I.F. amplifier 5 and a second converter 6 which passes the resulting 50 kc/s. second I.F. signal to amplifier 7. Medium wave signals pass through the same I.F. chain, but have an alternative first amplifier 2<1>. A.G.C. potentials are obtained from unit 25. The 50 kc/s. second I.F. is applied in parallel to two channels, the first of which comprises amplifier 29 and band pass transformer 95, the output of which is applied to full wave demodulator 88, 89. The second channel comprises amplifiers 28 and 43, a network combining the functions of carrier selector and A.F.C. discriminator, and a carrier limiter 71 the output of which is applied to diodes 88, 89 of the demodulator in parallel. The demodulated output is passed through a 50 kc/s. filter comprising tuned circuit 115, 116 to modulation amplifier 110. A phase adjusting network comprising capacitor 35, inductor 37 and potentiometer 36 is provided at the input of the second channel such that with switch 32 in the position shown, condenser C provides the 90 degree phase shift of the carrier, required when phase modulated signals are being received. Limiter valve 71 has two anode sections, the first limits the negative peaks at anode current cut-off and the second similarly limits the positive peaks. The combined carrier selector and A.F.C. discriminator comprises a crystal gate formed by secondary winding 46<11>, crystal 49 and balancing capacitor 50. Tuned circuit 65 is provided to adjust the effective " Q " of the crystal. The carrier output is fed through tuning indicator 81 to the limiter and also through R.C. networks 55, 56 and 57, 58 to the diode anodes 51, 52. The modulated signal is fed to these anodes in push-pull through capacitors 59 and 60, the former having balancing capacitor 61 connected in parallel. The circuit operates as a phase-shift discriminator and provides an A.F.C. voltage which is applied via lead 67 to reactor valve 123 connected across tuned circuit 9 of second oscillator valves 10, 12. The Specification as open to inspection under Sect. 91 also comprises the subject-matter of Specifications 625,319 and 625,320. This subject-matter does not appear in the Specification as accepted.
Patent GB-180006-A (GB)
Title: Improvements in or relating to push-carts and other baby carriages
IPC: B62B9/18
Filed: 1921-02-11
Abstract: 180,006. Roberts, W. T. Feb. 11, 1921. Perambulators.-A baby-carriage or push cart having a reversible body mounted on the top half i, Fig. 3, of a turntable has an underframe b, Fig. 1, to which the handles a are attached, slung from the chassis e, and this frame carries the lower half of the turntable. The parts of the turntable are yieldingly held together by a stud g and a spring washer, and the parts are locked in one of two positions by projections j on one part entering holes f<1> in the other.
Patent GB-308050-A (GB)
Title: Improvements in locking devices for the frames of ladies' hand bags and other articles
IPC: A45C13/06
Filed: 1928-10-12
Abstract: 308,050. Gaillard, F. Oct. 12, 1928. Fastenings for bags; catches, automatic.-A swivelling member A is slotted or grooved at D to receive a member F, the end of which moves, as the members F, D are brought into an assembled position, into a position on the other side of the axis C, as shown. The fastening is released by turning the member A so that the member F is pushed to the other side of the axis. A stop E is provided for the member A, which member may be provided with ridges to facilitate its operation between the fingers. The member F is forced into the upper part of the groove or notch D by its own resilience, or it may be formed as a slidable member movable in a guide slot under spring action.
Patent GB-219893-A (GB)
Title: Method for the production of double walled glass vessels
IPC: C07F9/24
Filed: 1924-02-26
Abstract: 219,893. Glasfabrik Sophienh³tte R. Bock Ges., and Hodecker, W. Feb. 26, 1924. Forming hollow-walled vessels.-A method of making vacuum flasks consists in blowing a hollow glass body to the shape of the finished outer walls of the flask, and providing a domed portion thereon which is pushed inwards and shaped to form the inner wall of the flask. The hollow glass body a, Fig. 1, is blown in a mould d which is so shaped as to form the body with a shoulder b, and a domed portion c. After removal from the mould, the body is held by tongs f and a narrow tube g, Fig. 3, is added to form the evacuation nipple. The dome c is then reheated, and the hole h', left by the blowpipe, is closed. A tool h, Fig. 5, preferably of polygonal crosssection, is then used to push the dome inwards to form the inner wall of the vessel, the body a and the tool h being rotated relatively to one another during this operation. In making a flask of the usual type with the neck narrower than the body, the tool h is provided with a portion that can be moved radially after the main portion of the tool has passed through the neck of the flask.
Patent GB-1259804-A (GB)
Title: Improvements in or relating to the manufacture of electrical circuit assemblies
Inventor: CHAMPNEY MAURICE ANTHONY
IPC: H01L23/10
Filed: 1969-02-28
Abstract: 1,259,804. Circuit assemblies. HAWKER SIDDELEY DYNAMICS Ltd. 28 Feb., 1969, No. 5008/69. Heading H1R. In an hermetically sealed circuit package including a conductive pattern on a substrate and leads extending from the package bonded to the conductive pattern a hermetic seal of insulating material such as glass, glass ceramic, inorganic or organic resin or rubber is formed over both the leads and part of the conductive pattern. A metallic, glass, glass ceramic or ceramic substrate has conductive coatings 2 screen printed thereon and then successive layers of insulating material 3, 5 and conductive material 4, 6 deposited in the required pattern. Preformed output leads 7 are then attached to the conductive areas 2 and a frame 8 metallized on one of its major plane surfaces 9 and coated with a sealing glass 10 is placed over the assembly and sealed by heating, the glass 10 seal extending over part of the circuit pattern as well as the leads 7, Fig. 2 (not shown). After affixing components to the circuit assembly sealing caps 11 of metal, glass or ceramic are sealed to the metallized areas 9. In an alternative arrangement the assembly may be coated with the glass 10 or a rubber or resin and then the frame 8 is fitted.
Patent GB-672378-A (GB)
Title: Projection system for lenticulated film
IPC: G03B33/14
Filed: 1950-02-27
Abstract: 672,378. Projection systems for lenticular films. GRETENER, E. Feb. 27, 1950 [March 1, 1949], No. 5016/50. Classes 97 (i) and 98 (ii). To increase the illumination on the screen in the projection of lenticular colour or stereoscopic kinematograph. films, the film has identical lenticulations on each side, the two sets of lenticulations being in register, and the colour filter is located between the light source and the film. As shown, light from a source 31 is focused by a mirror 32 and lens 33'on to the film 34 after passing a colour filter 17 having red, green and blue areas R, G, B. The light emerging from the film passes to the projection objective 28 and thence to the screen. As explained in the Specification, the use of the particular arrangement of lenticulations whereby the lenticulations of one side are in the focal plane of the corresponding lenticulations of the other side of the film ensures that the angular aperture A of the entrance beam is the same as the aperture A<SP>2</SP> of the emergent beam whereby projection objectives of larger aperture then hitherto can be used without producing colour dominants. For stereoscopic projection the colour filter is replaced by a filter producing two beams polarized at right angles.
Patent GB-258479-A (GB)
Title: Improvements in shovels
IPC: A01B1/02
Filed: 1926-02-22
Abstract: 258,479. Walsh, A. Q. Feb. 22, 1926. Hinged branched handles.-An auxiliary handle 17 is universally pivoted to the main handle 11 of a shovel by means of a hinged connection to the forked head 15 of a swivelling bolt. The hand grip 19 is rotatable on the handle 17 by a spring and bolt connection 21 which also permits the two handles to be latched together by a projection 24 engaging a keyhole slot in a plate 26.
Patent GB-597941-A (GB)
Title: Improvements relating to the testing of the textile cords and the like
IPC: G01N3/32
Filed: 1945-02-28
Abstract: 597,941. Testing textile elements for fatigue. WINGFOOT CORPORATION. Feb. 28, 1945, No. 5049. Convention date, Sept. 19, 1944. [Class 106 (ii)] Textile elements, such as cords for vehicle tyres, are tested for fatigue by first embodying a number of such elements in a tubular member of flexible material, such as rubber, bending the member, inflating it and rotating it while in the bent condition. Each tubular test specimen is made from sheets of uncured rubber wrapped around a rod, two superposed sheets of rubber enclosing longitudinal tyre cords which adhere to the latter, additional sheets of rubber and a spirally-wound constraining cord, and further sheets of rubber to encase the constraining cord. The specimen is then vulcanized and cut into test pieces 6. The testing- apparatus comprises a frame 2 having a housing 7 in which a shaft 8, driven from a motor 12, is supported. A gear-wheel 9 on the shaft 8 drives a train of wheels 13 each mounted on a stub shaft 14 (not shown) projecting from each side of the housing 7. A specimen 6 is secured at one end, in a fluid-tight manner, to each end of each shaft 14, and at the other end is secured in a fluid-light manner to a tubular member 18 rotatably mounted in a bearing block 17. Each member 18 is connected to a source 30 of compressed air. The shaft 8 drives a counter-mechanism 47 through a belt 45, gearing 44 and shaft 46. In operation, the specimens 6 are rotated at constant speed for a definite number of cycles and the speed and air pressure inside the specimens is then increased in increments until failure of the specimens. Due to the constraining cords in the specimens, the air pressure produces only tensile stresses in the tyre cords.
Patent GB-108137-A (GB)
Title: Platen Printing Press.
Inventor: ROCKSTROH MAX
IPC: B41F1/00
Filed: 1917-04-10
Abstract: 108,137. Rockstroh, M. April 10, 1917. Platen machines, of the type having a rocking and sliding platen in two parts, the upper one sliding on the pivoted part, are provided with means for controlling the sliding movement of the upper part so that it takes place partly during the rocking movement, whereby smoothness of operation is obtained and shocks are prevented. As shown, the lower part 4 of the platen is pivoted at 3 on the fixed bed 1 and is formed with rectilinear guide-ways 6, 8 in which ribs or parts 7 of the upper part 5 slide. The upper part 5 carries the platen proper and is operated by the cranks 12 and rods 13 connected to the platen at 14. A bracket 15 depending from the part 5 is formed with a guide-way 16, 17, part of which is curved and part rectilinear, which engages a fixed pin 18 or anti-friction roller on the framing, so that the part 5 is moved on the guides 6, 7, 8 by the curved part of the guide 16, 17 during part of the rocking movement, and the final rectilinear movement of the part 5, when the platen is vertical, takes place while the pin 18 is in the rectilinear part of the guide 16, 17, as shown in Fig. 2. The parts 4, 5 are locked together, while the pin 18 is out of the guide 16, 17, by a weighted hook 11 pivoted at 9 on the part 4 and formed with a notch to engage a lug 19 on the bracket 15. A fixed pin 20 on the framing disengages the hook 11 as the platen rocks up to the bed, as shown in Fig. 2.
Patent GB-1056692-A (GB)
Title: Improvements in methods of, and plant for,the mechanical excavation of lined shafts
Inventor: COLLINGRIDGE VINCENT HARVEY
IPC: E21D1/03
Filed: 1964-02-06
Abstract: 1,056,692. Shaft sinking shovel excavator assemblies. MOWLEM (CIVIL ENGINEERING) Ltd. Dec. 10, 1964 [Feb. 6, 1964], No. 5112/64. Heading E1F. Excavating the bottom of a lined shaft is done by a shovel assembly comprising a shovel pivotally mounted at the outer end of a boom of two pivoted parts, the boom being swingably supported about horizontal and vertical axes on a frame that can be secured to the lining of the shaft. Movements of the shovel and boom are due to hydraulic rams suitably positioned on the assembly.
Patent GB-985792-A (GB)
Title: Improvements in or relating to gravity roller conveyors
Inventor: ORWIN OLAF JOHN BARCLAY
IPC: B65G13/11
Filed: 1962-02-10
Abstract: 985,792. Roller conveyers. FISHER & LUDLOW Ltd. Feb. 1, 1963 [Feb. 10, 1962; Jan. 19, 1963], Nos. 5189/62 and 2446/63. Heading B8A. Each roller of a gravity rollerway comprises a shell 23 closed at each end by a hub member 24 provided with a stainless steel stub shaft 27 which rotates within a plain bearing in the form of a nylon ball 29. The shell 23 may be of metal or of semi-rigid plastic, e.g. P.V.C. The rollers are supported by a pair of stringers 10 having a flange 12 with a C-shaped bead groove 14 which receives spacer strips 16 formed of nylon or other semi-rigid plastic. Elements for supporting the rollers are mounted at intervals along the stringers and consist of a cup-like member 19 with an anchorage portion 20 for accommodation within the stringer groove. The 220 supporting members 19 are located against movement along the associated stringer by the strips 16 which are themselves retained within the groove by ears 21 formed on each supporting member 19. The balls have limited pivotal movement within the supporting members and permit free rotation of the shafts 27 even when the shafts of a roller are out of alignment due to manufacturing or assembly tolerances or when the roller shells 23 flex under load. In a modification, Fig. 5, the vertical flange 12 of each of the stringers is of plain configuration and each roller supporting element comprises an anchorage portion of inverted channel configuration. The supporting elements are secured to the stringers by screws 34 or other fastenings. Location spigots on the supporting elements may replace the screws &c.
Patent GB-233286-A (GB)
Title: Improvements in and relating to pneumatic despatch apparatus
IPC: B65G51/24
Filed: 1925-02-25
Abstract: 233,286. Lamson Pneumatic Tube Co., Ltd., and Brown, D. M. Feb. 25, 1925. Pneumatic dispatch apparatus.- Means for deflecting carriers from the main tube to a branch tube of a pneumatic system comprise a pivoted cage at the junction which selectively deflects a branch-tube carrier while allowing main tube carriers to pass on, a carrier for the branch swinging the cage over to a stop which releases the carrier to the branch, the cage then returning to the normal position with the latch mechanism reset. Every carrier operates a detent mechanism which arrests the following carrier until the first carrier is clear of the cage. A pivoted cage 5, normally held by a counterweight 7 in the position shown in Fig. 1 for the passage of a main tube carrier, is fitted with latch mechanism comprising a pivoted frame 8 which supports a toggle latch 10 pivoted to the frame, the lower part of the latch being slotted to receive a pin 15<1>. A rod 15 is pivoted to the frame 8 and to a bellcrank lever 17 which engages a slot 19 in a spring-actuated sliding bar 20. Flat-ended carriers 24, for the main tube, meet the latch lever 10 and break the toggle-joint, allowing the carrier end to engage the frame 8 and move it downwardly to allow the carrier to pass to the main tube. The frame 8 carries the rod 15, thereby freeing the bar 20 to project into the transit tube and hold up the following carrier. As soon as the carrier is clear, a spring 23 returns the latch parts to normal, thereby withdrawing the bar 20 from the tube. When a recessed branch tube carrier 26 moves into the cage, the latch lever 10 enters the recess and the carrier edge strikes the frame 8, swinging the cage to the position shown in Fig. 2. The end 12 of the latch lever 10 then meets the stop 27 which breaks the toggle-joint and allows the frame 8 to collapse, thereby causing the rod 15 to release the bar 20 into the tube to hold up the following carrier. When the carrier 26 has passed into the branch tube. the spring 23 resets the latch parts and withdraws the bar 20. Specification 195,009 is referred to.
Patent GB-222381-A (GB)
Title: Improvements in and relating to justifying devices for matrixsetting and type-bar casting machines
IPC: B41B11/00
Filed: 1924-02-29
Abstract: 222,381. Marks, E. C. R., (Typograph Ges.). Feb. 29, 1924. Justifying matrices. -In machines of the kind having circular spacing wedges, which are rotated by power applied at the periphery, the rotation of the wedges is effected simultaneously by means of a member common to all of them. Each spacing device comprises two superposed circular members b, c, Fig. 1, the non-rotatable parts of which are connected by bridgemember m, which is prolonged to form an arm a for suspending the spacing-device from a guidewire o. Notches d, e in the rotatable parts of the wedges are engaged by bars f, g, carried by arms r, s, Fig. 2, on shafts i, k, which are rotated by pinions and a. rack L
Patent GB-433362-A (GB)
Title: Improvements in portable machines for shearing metal, cardboard and other sheet material
IPC: B23D29/00
Filed: 1935-02-20
Abstract: 433,362. Shear-blades. BOSCH AKT.- GES., R., 4, Militõrstrasse, Stuttgart, Germany. Feb. 20, 1935, No. 5401. Convention date, Feb. 21, 1934. [Class 83 (iv)] [See also Group VIII] In hand-shears with a motor &c. driven vertical blade 1 co-operating with a stationary blade 2 on a helical frame 3, the edges of the blades 1, 2 are recessed. The length of the recess A is from 4-10 times the maximum thickness of material to be cut and the distance from the point of the blade to the beginning of the recess is smaller than the stroke of the blade 1.
Patent GB-772522-A (GB)
Title: Improvements in or relating to cross-linking polymers
IPC: C08K5/29
Filed: 1955-02-23
Abstract: A chain halogenated polymer containing a plurality of saturated halogenated carbon chains, at least half halogenated, is cross-linked by reacting the polymer in the presence of a linking agent capable of producing, under the conditions of the linking reaction, a polyamine of the formula R(NHA)n, where R is a polyfunctional organic radical, A is hydrogen or a monofunctional organic radical and n is an integer of at least 2.  The polymer may be a homopolymer of 2-chloroperfluoropropylene, chlorotrifluoroethylene, bromotrifluoroethylene, dichlorodifluoroethylene (asym.), trifluoroethylene, chlorofluoroethylene, vinylidene fluoride or vinylidene chloride, or a copolymer of two or more of these copolymerized with each other, or a copolymer of one or more of the above with ethylene, tetrafluoroethylene, perfluoropropylene, acrylic acid or acrylonitrile.  The crosslinking agent may be a polyisocyanate such as methylene - di - p - phenylene diisocyanate, 4,41 - diphenyl diisocyanate, p - phenylene diisocyanate, hexamethylene diisocyanate, 4-methyl - m - phenylene diisocyanate, s - phenenyl triisocyanate, 5-trifluoromethyl-m-phenylene diisocyanate, 3,31 - dichloro - 4,41 - biphenyl diisocyanate, tetrachloro-p-phenylene diisocyanate, a polyisothiocyanate such as pphenylene diisothiocyanate, an amine salt such as hexamethylene diamine diacetate or carbonate, 4,41 - diaminodiphenylmethane dihydrochloride, a polythiacarbamide, a polyurea such as hexamethylenediurea and p-phenylenediurea, a polycarbamyl halide such as hexamethylene dicarbamyl chloride, p-phenylene dicarbamyl chloride, methylene - di - p - phenylene dicarbamyl chloride, s-phenenyl tricarbamyl chloride, 4,41 - biphenyl dicarbamyl chloride, 4-methyl-mphenylene dicarbamyl chloride, or a polyurethane such as hexamethylene-diurethane, pphenylene - diurethane, 4 - methyl - m - phenylene-diurethane.  The reaction may be effected by heating, preferably in the presence of moisture and of a basic compound such as lead, magnesium or zinc oxide to absorb hydrogen halide formed during the reaction.ALSO:5 - trifluoromethyl - m - phenylene diisocyanate is prepared by dissolving 5-trifluoromethyl-m-phenylene diamine in ethyl acetate and adding this solution to a mixture of phosgene in ethyl acetate; the precipitate that appears initially is removed by heating and stirring with a further addition of phosgene. Excess phosgene is removed by bubbling nitrogen into the mixture, solvent is removed and the residue distilled in vacuo to give an oil boiling at 97-98 DEG  C. at six mm.; 3,31-dichloro-4,41-biphenyl diisocyanate and tetrachloro-p-phenylene diisocyanate may be prepared similarly from 3,31-dichlorobenzidine and tetrachloro-p-phenylene diamine respectively.
Patent GB-889837-A (GB)
Title: Improvements in or relating to electric lamp mounting arrangements
Inventor: HUBBOLD SYDNEY
IPC: F21V19/00
Filed: 1959-02-17
Abstract: 889,837. Lighting fittings. GENERAL ELECTRIC CO. Ltd. Feb. 2, 1960 [Feb, 17, 1959], No. 5476/59. Class 75(4) A lamp mounting unit comprises a straight elongated member 11 of channel section incorporating on the outer side of its base a holder 14 for receiving the cap of an electric incandescent filament lamp 15 which holder is positioned so that a lamp inserted in it extends along the external side of the channel base, the channel member and holder shell being formed as a one-piece moulding of refractory material. The channel member, which is made of porcelain and glazed on at least the external surface, is open at both ends. Units may be mounted end to end to provide a continuous protective cover for the electric supply wires which enter and leave a circular box base by bushes 2, 3 or 4. A screw 16 secures the channel member to a boss 17 on the base. A fibre washer may be provided for the screw. A prismatic glass refractor encloses the lamp and an annular cover 5 holds the refractor in position on the base by clips 8. A gasket 6 seals the refractor and cover together, and a sealing strip 9 seals the gap between the cover and edge of the base. Raised studs 18 on the base prevent the unit from rotating.
Patent GB-467691-A (GB)
Title: Method for the manufacture of paper
IPC: D21F1/66
Filed: 1936-02-24
Abstract: 467,691. Adding white water to paper pulp. FAIR, A. E. H. Feb. 24, 1936, No. 5508. [Class 96] That part of the white water from a Fourdrinier papermaking machine containing mainly short fibres is separately collected and distributed, e.g. with filler, on to the pulp on the wire-cloth 2 of a Fourdrinier paper-making machine, as by pumping it from a vat 10 through sprays 7 to a corrugated plate 5 with a resilient lip 6. The plate 5 &c. is adjusted along the wire 2 according to the thickness of the paper, and the desired " one- " or " two-sidedness," which also depends on the proportions of white water &c. used. Specification 450,120 is referred to.