baber/WOPTO huggingface dataset:
Patent GB-796265-A (GB)
Title: Improvements in or relating to compressed air braking systems
IPC: B60T15/30
Filed: 1956-10-15
Abstract: 796,265. Compressed air brakes. KNORRBREMSE GES. Oct. 15, 1956 [Oct. 14, 1955], No .31390/56. Addition to 750,582. Class 103(1). A control valve for compressed air brake systems comprises a main air pipe 1, a triple valve 5, a constant-pressure chamber 13, an air conduit 15 leading from the main air pipe 1 to the constant pressure chamber 13, means 23 for varying the cross-sectional area of the conduit, a control device 17 downstream of the varying means 23 for permitting or stopping air flow to the chambers 13, the control device 17 being operated in dependence upon pressure in the brake cylinder 61 by pipe 63, an accelerating device 67 acting to bleed the main air pipe 1, the device 67 being controllable by air pressure in the brake cylinder acting through pipe 65, the accelerating device 67 being in the position of readiness when the varying means 23 is in a first position, a control means for controlling the varying means 23 which is operated by displacement of the piston system of the triple valve 5 and a direct connection 31 between the varying means 23 and the control means 33, the arrangement being such that upon braking the control means 33 causes the varying means 23 to move from a first position to a second position in which the cross-sectional area of the conduit 21 is reduced and further such that the varying means 23 is maintained in the second position until the braking action of the triple valve has been substantially wholly completed. As shown in the embodiment illustrated, the control means comprises a frusto-conical member 33 movable upwardly during a brake application as the pressure in chamber 11 is reduced, the varying means comprising a needle valve 23 being forced further into the sensitivity aperture 21 leading to the control chamber change valve 17. The relatively long travel of the sleeve 37 which is necessary to fully reopen the sensitivity aperture 21 makes possible a releasing operation without the filling surge effect that usually occurs on the rear coaches of a long train.
Patent GB-936816-A (GB)
Title: Material compacting device
IPC: E02D3/068
Filed: 1961-09-01
Abstract: 936,816. Tamping machines. RACINE HYDRAULICS & MACHINERY Inc. Sept. 1, 1961 [March 3, 1961; May 29, 1961], No. 31493/61. Class 107. [Also in Group XXIII] A self-contained portable compactor for tamping earth or a like surface comprising a frame, a tool mount, mounted on the frame for movement in a predetermined path, reciprocating means mounted on the frame for causing vibratory movement of the tool mount, a handle for guiding the frame, means mounting the handle on the frame for relatively free movement between the handle and the frame in a plane generally parallel to said path and for substantially preventing movement of the handle transverse to the plane and the path, and motivating means having a compression spring with its opposite ends seated on the handle and the frame respectively for moving the frame across the surface in response to vibration of the tool mount in the path. As shown, a compacting tool 11, 12 slidably and non rotatably mounted in a guide 13 and caused to vibrate through spring assemblies 15 by a piston 14 reciprocated in the guide 13 by a motor 24. A guiding handle 45 comprises arms 46 with flattened ends 50 snugly received in brackets 47a secured to the frame 10 of the compactor, hinge pins 51 extending through the brackets and arm ends. Pivoting of the arms 46 about the pins 51 is limited by a stop-plate 52 and by a pair of individually adjustable bolts 54 extending into the brackets 47a. The compactor is moved across the surface being tamped in response to the vibratory movement of the tool by a spring assembly 60 comprising a spring seating in members 61 and 63 rigidly secured to one handle arm 46 and the frame 10 respectively. The tank 25 containing fuel for the motor 24 is resiliently mounted on a bracket on the frame 10 by means of pad 37, e.g. of rubber.
Patent GB-634494-A (GB)
Title: Timing and alarm mechanism for cooking and other operations
IPC: G04F3/02
Filed: 1946-10-24
Abstract: 634,494. Actuation of switches; retractive switches. WEETMAN, R. G. Oct. 24, 1946, No. 31538. [Class 38 (v)] [Also in Group XXXVIII] A timing device having a clockwork mechanism which in order to select any one of a plurality of pre-determined time periods is partially wound up by a manually-moved setting means comprises a first electric switch actuated when the setting means is moved out of its normal position and a second switch actuated for a short interval immediately prior to the setting means returning to its normal position. When a finger is inserted in a desired hole of a dial 4 and the dial is rotated clockwise until the finger reaches the fingerstop 6, suitable gearing on the shaft of the dial partially winds a clockwork or other timing mechanism. When the dial is released it is returned by this mechanism at a controlled speed to its normal position. As soon as the dial leaves its normal position an arm 14 fixed to the dial spindle allows spring contacts 31, 32 to close and light the lamp 26 from a battery 17. Just before the dial 4 returns to normal the arm 14 makes electrical contact with a contact member 30 and energizes a buzzer 28. The. arm 14 then leaves the contact 30, silencing the buzzer, and strikes an insulated projection 33 on contact 31 to open contacts 31, 32 and extinguish the warning lamp 26, finally coming to rest against a fixed stop 12. The finger-plate may be rectangular and slid sideways to operate the clockwork or other timing mechanism by means of a rack and pinion device and in addition to or instead of the audible warning being given an associated electrical circuit may be suitably controlled.
Patent GB-377537-A (GB)
Title: Improvements in lenses for photography and the like
IPC: G02B13/00
Filed: 1931-11-14
Abstract: 377,537. Lenses. LEE, H. W. and KAPELLA, Ltd., 104, Stoughton Street, Leicester. Nov. 14, 1931, No. 31561. [Class 97 (i).] In a vide aperture lens corrected for spherical and chromatic aberrations, coma, astigmatism, and distortion, of the type described in Specification 157,040, [Class 97 (i), Optical Systems &c.], comprising two compound meniscus dispersive components with their concave surfaces facing each other, between two collective components having surfaces of different curvatures and having their more strongly curved surfaces turned outwards ; the concave exterior surface of the rear dispersive component has a radius R<6> exceeding 0À3f and the convex exterior surface of this component has a radius R<8> exceeding 0À4f, where f is the focal length of the system. The thickness of each of the dispersive components exceeds 0À14f. The collective elements of the two rear components have refractive indices exceeding 1.62. Preferably the ratio of the radii R<2> and R<1> exceeds 4À5 and that of the radii R<9> and R<10> does not exceed 7. The front collective component is preferably a single element with a refractive index not exceeding 1À61. Numerical data are given.
Patent GB-653239-A (GB)
Title: Process for the manufacture of vinyl alcohol polymerisates of low degree of polymerisation
IPC: C08F8/50
Filed: 1948-12-08
Abstract: The degree of polymerization of polyvinyl alcohol is reduced, e.g. from above 15,000 to 500-10,000, by heating in aqueous solution in a pressure vessel at 170-250 DEG  C.  Preferably air is excluded by heating in an atmosphere of steam or nitrogen, using solutions containing less than 20 per cent of polyvinyl alcohol. The low molecular weight polyvinyl alcohol may be recovered from the solution by concentration under reduced pressure, followed by precipitation with a water-soluble organic liquid such as acetone, methanol, ethanol, or dioxane either in bulk or fractionally, and drying the fibrous product in vacuo.  The finished product may be used as an ointment base, an emulsifying agent, or a vehicle for therapeutic agents.
Patent GB-386081-A (GB)
Title: Improvements relating to electrical resistances
IPC: H01C3/10
Filed: 1931-11-17
Abstract: 386,081. Grid resistances ; couplings. ELECTRO-MECHANICAL BRAKE CO., Ltd. and CADBURY, G. N., Eagle Works; West Bromwich. Nov. 17, 1931, No. 31830. [Classes 37 and 38 (i).] A metal strip is bent to form a number of straight parallel portions a perforated to take insulated cross-bars b by which the resistance is supported in a frame. The straight portions are flanged, corrugated, or beaded to increase the rigidity, or the strip may be so formed over its whole length, the edges being notched where required to enable the return bends to be made. Some or all of the folded ends are perforated with holes i, to take tapping terminals, each of which comprises a T-headed bolt d, the head e of which is inside the bend, and saddles f, which are clamped by nuts h to grip the bend of the strip. The terminal g is secured between the saddle and the nuts h.
Patent GB-913386-A (GB)
Title: Corona protection screen for inductor coils of vacuum furnaces
IPC: H01F27/36
Filed: 1960-09-16
Abstract: 913,386. Induction heating coils. ALLMANNA SVENSKA ELECKTRISKA A.B. Sept. 16, 1960 [Sept. 18, 1959], No. 31910/60. Class 39 (3). A vacuum furnace induction heating coil (shown in section along a complete turn of the coil) comprises a conductor 3, a coating of insulation 4, a corona protection screen consisting of conducting or semi-conducting layers 6, 7, 8 displaced with respect to one another (by three-quarter turn as shown) in the longitudinal direction of the conductor 3 and insulated from each other and a tight and porefree covering 9 of insulating material, such as a wrapping of silicone rubber, enclosing the layers. Preferably, the layers 6, 7, 8 may be of lead or metal containing varnish applied by spraying on to an uncured layer 5 of thermosetting or cold-curing resin which is then cured, before the layer 9 is applied. The conductor 3 is internally water cooled. A further protective layer 10 may be applied. The layers 6, 7, 8 are connected to a common source by terminals such as 13, 14.
Patent GB-765893-A (GB)
Title: Organic copolymers
IPC: C08F20/52
Filed: 1954-11-04
Abstract: Copolymers contain recurring intralinear units of the formul <FORM:0765893/IV(a)/1> and <FORM:0765893/IV(a)/2> wherein R, R11 and R111 are each a hydrogen atom, an alkyl radical of 1 to 3 carbon atoms, a phenyl or a cyclohexyl group, R1 is a saturated bivalent hydrocarbon radical of 2 to 6 carbon atoms, R2 and R3 are alkyl radicals of 1 to 3 carbon atoms and R1 is a saturated divalent hydrocarbon radical of 1 to 6 carbon atoms.  The copolymers may be prepared by the copolymerization of at least one ethylenically unsaturated amide of the formula <FORM:0765893/IV(a)/3> and at least one ethylenically unsaturated amide of the formula <FORM:0765893/IV(a)/4> Lists of type I are provided, the preferred amides being N:2-methacrylamidoethyl-N:N-dimethyl - beta - aminopropionate betaine, N:3 - methacrylamidopropyl - N:N - dimethyl - beta - aminopropionate betaine, N:2-methacrylamidoethyl - N:N - dimethylaminoacetate betaine, N:3 - methacrylamidopropylN:N - dimethylaminoacetate betaine and N:3 - methacrylamidopropyl - N:N - dimethylaminopropionate betaine.  Amides of type II specified are acrylamide, methacrylamide, N:N-dimethylacrylamide, N:N - diethylacrylamide, N - methyl - N - ethylacrylamide, and N-isopropyl and N-phenyl acrylamides and methacrylamides. Alternatively the copolymers may be prepared by copolymerizing amides of type II with compounds of the formula <FORM:0765893/IV(a)/5> wherein R5 may be alkyl of 1 to 4 carbon atoms, X- is Cl-, Br- or I- and the other symbols have the meanings assigned above, and then hydrolying the copolymers with alkaline agents to convert the ester groups to betaine groups. Carboethoxymethyl-2-methacrylamidoethyl dimethylammonium bromide and iodide, 1 - carboethoxyethyl - 2 - methacrylamidoethyl dimethylammonium bromide and the corresponding 1 - carbomethoxyethyl compound, and carboethoxymethyl - 3 - methacrylamidopropyl dimethyl ammonium iodide are representative of specified compounds of type III. Polymerization can be carried out in water or mixtures of water with water-miscible solvents, such as methanol, ethanol, propanol, isopropanol and tert.-butanol, and may be accelerated by heat, actinic light and/or a polymerization initiator such as benzoyl, acetyl and di-tert.-butyl peroxides, tert.-butyl and cumene hydroperoxides, hydrogen peroxide, sodium peroxide, sodium perborate and persulphate, ammonium persulphate-sodium bisulphite, hydrogen peroxide-thiourea, and potassium persulphate-ferrous sulphate; and azobis (isobutyronitrile), azobis(alpha, gamma-dimethylvaleronitrile, azobis (alpha, gamma, gamma-trimethylvaleronitrile), azobis (alpha-methyl-butyronitrile and azobis (isobutyramidine hydrochloride).  The copolymers are used in the manufacture of photographic layers.  Specifications 535,341, [Group IV], and 757,285 are referred to.
Patent GB-280056-A (GB)
Title: Improvements in feeding mechanisms for sewing machines
IPC: D05B27/02
Filed: 1926-12-18
Abstract: 280,056. Armstrong, J. J. V., (Union Special Machine Co.). Dec. 18, 1926. Eccentrics.-The throw of an eccentric 48, which is in the form of a ring pivoted at 49 to a collar 50 secured to the main driving shaft 3 of a sewing-machine by screws 51, may be adjusted by varying, by means of a screw-driver inserted through an opening 54a in the eccentric strap, the position of a clamping screw 54 in a slot 53 in the eccentric. Radial grooves are formed in the side face of the eccentric to facilitate its adjustment by a screw-driver.
Patent GB-835478-A (GB)
Title: Improvements relating to copper-base alloys
Inventor: PAYNE RONALD JAMES MALCOLM
IPC: C22C9/05
Filed: 1957-10-15
Abstract: A single-phase copper-base alloy has a composition in per cent by weight in the following range:  .Mn.5.0 - 20.0 .Al.3.5 - 7.0 .Ni up to.6.0 .P.0.01 - 0.2 .Fe.0 - 5.0 .Sn.0 - 3.0 .As and/or Sb 0 to less than 0.01. .Cu.the remainder  the Al content being less than 6.5 when the Mn content is 10.0 or more.
Patent GB-1425513-A (GB)
Title: N-n-n-n-l-leucyl-l-arginyl-l-prolyl-glycinamide diacetate
IPC: C07K5/097
Filed: 1973-02-14
Abstract: 1425513 Tetrapeptide AYERST MCKENNA & HARRISON Ltd 14 Feb 1973 [15 Feb 1972 12 April 1972) 32174/75 Divided out of 1425511 Heading C3H The novel tetrapeptide H-Leu-Arg-Pro-Gly- NH 2 .2CH 3 COOH is prepared by conventional methods of peptide chemistry.
Patent GB-372264-A (GB)
Title: Improvements relating to the manufacture of fibres, ribbons, films or the like from viscose
IPC: D01F2/08
Filed: 1930-10-27
Abstract: Cellulose xanthates, processes for making filaments and films from; alkali cellulose.--Viscose of high concentration, e.g. 10 per cent or more, and of low viscosity suitable for spinning into threads, ribbons, films, &c., is prepared by treating cellulose with alkali of more than 20 per cent strength, and, after pressing, disintegrating the alkali cellulose at a raised temperature of 25 or 30 DEG  C. or higher.  The alkali cellulose may be sulphided directly or after ripening.  Further to reduce viscosity, oxidizing agents may be added during the mercerizing, xanthating or dissolving steps; and the cellulose is preferably dried, e.g. at a temperature up to 100 DEG C. or higher.  The viscose is spun into acid salt baths; cold baths yield dull and hot baths glossy threads.  Stretch is applied to the threads.  In an example, cellulose mercerized in 27 per cent caustic soda is pressed to 3 times its initial weight, disintegrated for 4\ba1/2\be hours at 28 DEG  C., allowed to ripen for 24 hours, and xanthated with 32 per cent by weight of carbon disulphide; the xanthate is dissolved to form a solution having a cellulose content of 16 per cent and a sodium hydroxide content of 9 per cent, and is spun into a bath containing 13,5 per cent sulphuric acid and 30 per cent sodium sulphate, lustrous threads being obtained with a spinning temperature of 50 DEG  C. or dull threads at 18-20 DEG  C.
Patent GB-1174857-A (GB)
Title: Olefin Sulphonates
IPC: C11D1/12
Filed: 1967-07-13
Abstract: 1,174,857. Olefinic sulphonates. COLGATEPALMOLIVE CO. 13 July, 1967 [2 Aug., 1966], No. 32242/67. Heading C2C. Olefin sulphonates are prepared by reacting diluted gaseous sulphur trioxide and an olefin to produce an acid mix, neutralizing the acid mix with an aqueous alkaline material while maintaining the temperature below 150‹ F., the amount of alkaline material and water being such that the resulting blend has a pH of at least 12 and a viscosity of at least 5000 centipoises, and passing the viscous alkaline blend continuously into a zone maintained under super atmospheric pressure in which the blend makes contact with a heated solid heatexchange surface maintained at a temperature of at least 350‹ F. so as to raise the temperature of the blend to at least 330‹ F. within a period of less than 5 minutes. The alkaline material is generally used in a quantity of 110-140% of the stoichiometric amount required. Suitable olefins are R-CH=CH-R<SP>1</SP>, where R is alkyl and R<SP>1</SP> may be alkyl or preferably hydrogen, and contain 8-30 C atoms. The acid mix may also be prepared by reacting the SO 3 /olefin product with concentrated H 2 SO 4 .
Patent GB-1244568-A (GB)
Title: Mixer for granular material
Inventor: WETZEL FRITZ
IPC: B28C5/16
Filed: 1969-06-26
Abstract: 1,244,568. Mixing apparatus; edge-runner mills. A. STOTZ A.G. 26 June, 1969, No. 32283/69. Headings B1C and B2A. A mixer for foundry sand (as depicted, an edge-runner mill) has a hollow beam 5 constructed as an oil bath and rotated by a shaft 2. A fixed sun wheel 8, 9 constructed as the cover of the extended gear casing 7 engages a pinion 10 which rotates the stirrer 6 through a chain drive 12, 14. A bottom sliding discharge door (24, Fig. 3 not shown) has runners (26, Fig. 4 not shown) guided by rollers (25) and carrying racks (29) engaged by pinions (30) whereby the door can be operated through magnetic couplings (33). (For Figure see next column)
Patent GB-834878-A (GB)
Title: Improved dry honer
IPC: B24C7/00
Filed: 1958-10-10
Abstract: 834,878. Abrasive blasting. VACU-BLAST Ltd. Oct. 10, 1958 [Dec. 3, 1957], No. 32437/58. Class 60. A hopper 10 contains a load of abrasive, e.g. aluminium oxide from 325-5000 mesh. Secured below the hopper is a housing 11 through which extends vertically a pipe 12 terminating at orifice 13. The pipe 12 is connected by pipe 15 with the top of the hopper and by pipe 16 with an ejector type blast nozzle 32. Air is thus drawn through a moisture trap 22 and pipe 21 into the housing 11 and passes up through an airpervious member 23, e.g. of porous stone, and then through the abrasive in hopper 10 and to the pipe 15. The material in the bottom of the hopper is thus fluidized, abrasive flows through the orifice 13 into pipe 12, but the debris settles below the level of the orifice 13. The pipe 12 may be adjustable vertically. The spent abrasive and debris is picked up by suction line 25 connected to cyclone 26 and suction pump 27 which removes very fine dust and broken down abrasive. The hopper 10 contains a vibrating screen 28 to trap the larger particles of debris, the spent abrasive and smaller particles of debris falling into the hopper for separation as described above. Mention is made of blasting a die to smooth out grinding lines and to deburring tools and machine parts with intricate passageways.
Patent GB-1210608-A (GB)
Title: Optical scanning device
IPC: H04N1/16
Filed: 1968-07-08
Abstract: 1,210,608. Monogrammic signs with optical projection. UNITED AIRCRAFT CORP. 8 July, 1968 [3 Aug., 1967], No. 32474/68. Heading G5C. [Also in Divisions G2 and H4] A device for scanning a radiation beam across a target comprises a helical mirror, or equivalent structure, rotated about its central axis. As shown, Fig. 1, the mirror 16 is formed on the outside of a cylinder 12 with the mirror surface intersecting the surface of the cylinder at right angles. A convergent beam of light is projected from source 22 and is reflected by the mirror 16 so that it comes to a focus on an inclined target 30. As the cylinder rotates the beam of light is scanned along the target. The target may be moved normal to the scanning direction by a roller 15. In a second embodiment, Fig. 3 (not shown), the light source is collimated, the mirror surface intersects the cylinder surface at an obtuse angle and the target may be placed at any position in which it is scanned by the reflected beam, e.g. parallel to the cylinder. The mirror may be arranged on the surface of a cone, Fig. 7 (not shown). Two or more mirror surfaces may be formed on a single cylinder, Fig. 8 (not shown). In a modification, Fig. 9 (not shown), the mirror is replaced by a structure comprising a plurality of optical fibres lying at the surface of a cylinder parallel to the axis. The fibres extend from one end of the cylinder to a helical path at which they are directed out from the surface and terminate. The mirrors may be utilized in the transmitter and receiver of a facsimile transmission system, Fig. 6 (not shown), in which a light source is scanned across a document and the transmitted light is detected and the resulting signals are utilized to modulate a radiation source at a receiver via a radio link, the modulated beam being scanned across a radiation sensitive surface by a helical mirror synchronized with the mirror at the transmitter. A system for projecting a series of alphanumeric symbols on to a surface comprises an array of parallel lasers which can be selectively energized to generate a beam of light having the crosssection of a desired symbol, the beam being projected on to a target surface by means of a helical mirror which is rotated to scan the target, Figs. 10 to 12 (not shown).
Patent GB-307370-A (GB)
Title: Improvements in repeaters for telephone systems
IPC: H04Q3/00
Filed: 1927-12-02
Abstract: 307,370. Siemens Bros. & Co., Ltd., and Patterson, W. G. Dec. 2, 1927. Automatic exchange systems.-A repeater for use in automatic or manual systems comprises a relay, normally in series with the answering supervisory relay, which is released in response to busy lamp flash conditions, and the same or another relay is then connected between earth and the speaking wire to which battery and earth are intermittently connected, to repeat back the lamp flash signal. On seizure, impulse .relay A operates to connect relays I, D(2) across the outgoing leads. Relays I, B operate in turn, the latter locking up and closing a circuit for D(1). During each digit dialling relay C directly bridges the outgoing leads so that relay I releases and relay J energizes. Relay J remains operated throughout all the digits, being locked over j<1>, i3, da1 and keeps open the energizing circuit of relay F. If the call is successful, supervisory relay D energizes followed by relay DA which repeats battery reversal back, connects up meter booster batterv at da4 and releases J which in turn cuts off the booster battery. Relay DA is slow to operate and shorts its winding 2 to become slow to release. If busy condition is encountered, busy tone and lamp flash signal are sent alternately, the latter comprising battery on both a and b leads. Lamp flash releases relays I, J, so that relay F energizes. Winding 1 of relay A is thereby connected over i2, f2, to the incoming a lead and relay I is connected to earth at f<3> so that it operates. Energization of relay I connects both the incoming leads to A(2) to repeat the flash signal, relay A releasing. Relay I denergizes and relay A pulls up during the tone signal, F being locked up at b3. Relay B remains energized over i1 and a1 alternately throughout the signals. When the calling subscriber hangs up, relay A releases or remains released, and at the next tone signal B and F release in turn.