baber/WOPTO huggingface dataset:
Patent GB-1280087-A (GB)
Title: Special purpose machine tool
Inventor: MARRABLE ROLAND RICHARD
IPC: B23C3/32
Filed: 1970-11-26
Abstract: 1280087 Milling helical grooves CREED & CO Ltd 26 Nov 1970 56196/70 Heading B3K A machine for milling helical grooves in a cylindrical workpiece comprises two milling cutter assemblies movable in opposite directions along a left and right handed lead screw 9, a drive shaft 4 driving each of the cutters 32 continuously through a gear train 25, 24, 27, 30, a work collet 19 driven from the lead screw by gearing 14, 22, 21, a work centre 17, and a detent and trip arrangement which allows pivoting of a support carrying the cutter assemblies about the axis of shaft 4, so that half nuts are adapted to engage the screw thread on the lead screw, and the cutters are brought into engagement with the workpiece held between the collet and centre so that machining can be carried out. The machine has a U-sectioned frame, 2, 3, Figs. 4-6 which supports the cutter drive shaft, lead screw 9, collet 19, and centre 17. Shafts 9 and 4 are belt driven by a motor, through a reduction gear and clutch, shaft 9 is driven at a much slower speed than shaft 4, and the collet is driven at a lower speed than the lead screw. Each cutter assembly comprises a cutter frame 23, Figs. 1, 8, carrying the gears 25, 24, 27, a half nut 29 for engagement with the lead screw, a skewed cutter spindle assembly, Fig. 9, whose gear wheel 30 meshes with gear wheel 27. A further half nut 34 which matches with half nut 29 is carried by a swinging lever 33 having a support wheel 35 which rolls along a rail 36. Each frame is slidably mounted on rods 38, 39 fixed to cross-pieces (40), (41), Figs. 2 and 3 (not shown), the pieces being pivotable about shaft 4. Rail 36, Figs. 4 and 8, is pivotal about pivots 56, 57, and is connected to frames 23 by levers 55, 59 and 56, 60. Hooks 61, 62, Fig. 7, depend from the cross-piece and engage spring loaded detents 63, 64. A transparent rigid guard 65 is pivoted on arms 66, 67 and when downward pressure is applied to the guard, frames 23 are pivoted about shaft 4 until they are latched. A workpiece is fed through the collet and clamped, the guard is pressed further down so as to tilt frame 23, the lead screw is engaged by the half nut, and the rotating cutters are fed along the workpiece so as to cut opposite hand helical grooves. When the machining is complete, detents 63, 64, Fig. 7, are tripped by fingers 37, the lead srcew is disengaged, and the cutters are lifted away from the workpiece. The workpiece is then pushed out from the collet by the centre 17.
Patent GB-1345200-A (GB)
Title: Circuit for equalising a transmission system
IPC: H03H11/04
Filed: 1971-12-03
Abstract: 1345200 Frequency selective amplifiers WANDEL U GOLTERMANN 3 Dec 1971 [4 Dec 1970] 56253/71 Heading H3W An equalizer having a transfer function of the form comprises : a cascade arrangement of a resistor R 3  for the weighting coefficient a 0 , integrators 4, 5 and summing amplifier 6; a forward path between the input 1 and the input of the summing amplifier 6 including a resistor R7 for the weighting coefficient a 2 ; a first feedback path between the output 2 and the input of integrator 4 including a resistor R8 for the weighting coefficient b 0 ; a second feedback path between the output 2 and the input of inte-  grator 5 including an inverter 10 and resistors R9, R13; and a further forward path between the input 1 and the input of integrator 5 including resistors R11, R13, the resistors R9, R11, R13 being variable. The variable resistors R9, R11 comprise a single variable potentiometer, and may precede the inverter 10 if a further inverter is included between terminal 1 and resistor R11, Fig. 4 (not shown). In this arrangement, the ends of the potentiometer are connected in circuit by a reversing switch (36) so that the sign of the attenuation may be changed.
Patent GB-1362399-A (GB)
Title: Thermoplastic materials
IPC: C08L25/06
Filed: 1972-12-01
Abstract: 1362399 Rubber-toughened thermoplastic/ liquid telomer compositions STERLING MOULDING MATERIALS 1 Dec 1972 [3 Dec 1971] 56364/71 Heading C3G  A rubber-toughened thermoplastic material contains 0À2 to 5À0 parts by weight per hundred parts of material of a liquid hydrocarbon telomer having an unsaturated carbon chain. The preferred thermoplastic material is high impact polystyrene and the telomer may be produced from a 1,3-diene, preferably butadiene. Examples are given in which a high impact polystyrene produced from styrene and polybutadiene is compounded with a butadiene telomer, TiO 2 , zinc stearate and anti-oxidant.
Patent GB-1387649-A (GB)
Title: Organosilicon polymer membrane
IPC: B01D67/00
Filed: 1972-12-06
Abstract: 1387649 Polyvinylorganosilane membranes RHONE-POULENC SA 6 Dec 1972 [7 Dec 1971] 56381/72 Heading B5B [Also in Divisions C3 and B1] A membrane is composed of a vinylorganosilane polymer composed of a plurality of units of formula  which units need not be identical, in which each of R 1 , R 2  and R 3 , which may be identical or different represents a linear or branched alkyl radical containing up to 12 carbon atoms, a cycloalkyl radical with 5 or 6 ring carbon atoms, or a monovalent, monocyclic or polycyclic aromatic radical, the cycloalkyl and/or aryl radicals optionally being substituted by one or more alkyl radicals with 1 to 4 carbon atoms, with the proviso that one of R 1 , R 2  and R 3  may represent a hydrogen atom. The membrane is between 50 and 500Á thick and possesses on both faces pores of diameter between 0À05 and 25Á; at least a part of these pores pass without discontinuity through the membrane The membrane is prepared from a solution of the polymer in a mixture of a solvent and a non- solvent for the polymer. This solution is cast on to a temporary support, which is a roller in the examples, and the polymer is then coagulated, by contact with a coagulating liquid, before either of the solvent or the non-solvent has started to evaporate. In the examples the polymer is polyvinyltrimethylsilane.
Patent GB-1367695-A (GB)
Title: Dredging machine
IPC: E02F9/28
Filed: 1971-12-10
Abstract: 1367695 Suction dredgers INLAND SERVICE CORP 10 Dec 1971 [10 Dec 1970] 57579/71 Heading ElF In a cutter-suction dredger in which material is excavated by opposed digging augers and fed by these augers to a centrally located suction pipe, the excavated material is confined to the vicinity of the augers by a shield adjustably pivoted on the suction pipe-supported frame carrying the augers U.S.A. Specification 3,521,387 is referred to. (For Figure see next page)
Patent GB-1168280-A (GB)
Title: Roller Conveyor
Inventor: BERGLING CHARLES GUNNAR BIRGER
IPC: B65G13/00
Filed: 1966-12-23
Abstract: 1,168,280. Roller conveyers. INGENJÍRSFIRMA HEBE A.B. 23 Dec., 1966, No. 57711/66. Heading B8A. A roller conveyer suitable for use with a cutting machine for sheet metal comprises chain driven shafts 10 carrying cast iron roller discs 11, the shafts being mounted for horizontal angular movement on beams 2, 3, which support shaft bearings 8, 9, the beam 3 being movable longitudinally by an hydraulic cylinder 5. Along each side of the conveyer are rollers 18, 21 on normally vertical shafts. Floor plates 14 are provided above the shafts 10. In use, as a metal sheet is conveyed on the discs 11, the edges of the sheet are brought into engagement with the rollers 18 or 21 by horizontal skewing of the shafts 10. The conveyer is then braked and the rollers 18, 21 are pivoted clear of the sheet. After cutting, the pieces are carried away by restarting the conveyer or by lifting them from the conveyer.
Patent GB-1204669-A (GB)
Title: A sealed ball bearing for the bottom rollers of textiles drafting apparatus
Inventor: MAY DIETHELM
IPC: D01H5/56
Filed: 1967-12-22
Abstract: 1,204,669. Spinning and twisting machines. D. MAY. 22 Dec., 1967 [24 Dec., 1966], No. 58470/67. Heading D1D. [Also in Division F2] A seal for a ball bearing having inner and outer races 2, 1 with balls 3 therebetween, comprises rotating discs 8 which are positioned one at each end 5 or 6 of the inner race 2 and are provided with milled &c outer peripheral surfaces. The sealed bearing is suitable for use on the bottom rollers of spinning machines and in an embodiment is mounted on a pin 10. Cylinders 11, having necks 12, are screwed onto the pin 10. Each neck 12 abuts a disc 8 and thus axially locates the bearing. In a modification at least one of the sealing discs 8 is formed integrally with a neck 12 and is provided with a milled &c. surface.
Patent GB-1197200-A (GB)
Title: Cage Filament for Electron Discharge Device
Inventor: UCHIMARU KIYOSHI
IPC: H01J1/16
Filed: 1967-12-27
Abstract: 1,197,200. Thermionic - cathode tubes. NIPPON ELECTRIC CO. Ltd. 27 Dec., 1967 [29 Dec., 1966], No. 58635/67. Heading H1D. The cage filament of an electron discharge device comprises a number of U-shaped filament strands 15 arranged side by side to form a hollow cylinder with the bases 17 of the "U"s forming a circle at one end, the strands being fixed at the other end to a base (not shown) and braced to form a self-supporting structure by a bracing structure which connects the strands to each other at points adjacent the said one end of the cylinder and which is free to move axially without constraint to allow the strands to expand and contract without deformation. As shown the bracing structure is formed by wires 12 attached only to the strands, but rigid frames, Figs. 1b and 1c (not shown), may also be used. In another embodiment, Fig. 4 (not shown), the bracing structure is slidably mounted without axial constraint on a central mast mounted on the base. More than one bracing structure, though not necessarily of the same type. may be used.
Patent GB-1458038-A (GB)
Title: Flash camera apparatus
IPC: G03B7/16
Filed: 1973-12-18
Abstract: 1458038 Flash apparatus WEST ELECTRIC CO Ltd 18 Dec 1973 [20 Dec 1972] 58658/73 Heading G2A A camera including a flash source has a first means for controlling the amount of illumination received from the flash, and a second means for controlling the focal distance, the second means being operable either independently or in conjunction with the first means. As shown, the said second means is a slider 5, which can slide along a distance scale and cause corresponding focusing movement of the lens 3. Slider 5 can move independently when daylight photography is being carried out. The said first means is a slider 6 which acts as a switch for energizing the flash 4. Slider 6 has an arm 8 engaging with slider 5, so that when slider 6 moves, slider 5 moves with it. Fixed to slider 6 is a plate 9 which has apertures 10, 11, 12 of different sizes, or filters of different densities. Thus as slider 6 moves, an aperture appropriate to the particular distance setting is selected to control the amount of reflected illumination which passes through the lens to the film.
Patent GB-1454110-A (GB)
Title: Tension control sinterable powder compositions
IPC: B65H23/18
Filed: 1973-12-19
Abstract: 1454110 Automatic control systems EATON CORP 19 Dec 1973 [21 Dec 1972] 58860/73 Heading G3N  The tension of material being driven between a material source and a roll is varied with the radius of material on the roll, the radius being determined by a divider from measurements of the roll angular velocity and the material linear velocity. As shown, these velocities are sensed by tachometers 24, 22 respectively and the instantaneous roll radius calculated by divider 42. The divider output is fed through amplifier 72 to summer 54 which also receives signals to compensate for roll friction and inertia, derived respectively from the derivative of the material velocity and from the roll angular velocity. Upon starting, the summer also receives a signal from circuit 46 to overcome roll striction. Summer 54 controls the roll drive torque or current so that the tension varies in proportion to the instantaneous roll radius. At low speeds of the roll, as detected by circuit 74, which includes a monostable multi-vibrator, the output of the divider 42 is replaced by a fixed value, otherwise the quotient would become indeterminate. In the divider 42, also Fig. 3 (not shown) a capacitor (88) is charged from tachometer 22 according to the material linear velocity, and discharged by a switching transistor (98) at a frequency proportional to the output of tachometer 24 i.e. the roll angular velocity. The divider output, which is a sawtooth, is averaged by amplifier 72 to produce the roll radius signal. The system is used in a winder for web or filament material e.g. paper.
Patent GB-1393930-A (GB)
Title: Rotary type hydraulic servo-mechanism
IPC: F15B15/12
Filed: 1972-12-21
Abstract: 1393930 Power steeing MITSUBISHI KINZOKU KK 21 Dec 1972 [27 Dec 1971 (2)] 59114/72 Heading B7H In a rotary type servo steering mechanism, Fig. 3, a torque is applied to an input shaft 2 by the provision of a partitioned hydraulic chamber 6 provided on the outer periphery of the shaft 2, the portions 6a, 6b being connected by passages formed in a concentric output member 3 to hydraulic drive chambers 4b, 4d and 4a, 4c respectively and to a servo valve mechanism including grooves 8, 9 formed in the output member 3. These grooves 8, 9 are in sliding contact with grooves 5a-5c formed in the input shaft 2, the groove 5a serving a feeding oil passage 16 and the grooves 5b, 5c for discharging oil via passages 17. The drive chambers 4a-4d are formed by partition walls 12A, 12B and 13A, 13B formed integrally with the casing 1 and output member 3 respectively. In Fig. 3 the input shaft has been rotated clockwise so causing chambers 4a, 4c to be pressurized and chambers 4b, 4d to be discharged resulting in clockwise rotation of output member 3. Also, portion 6b of chamber 6 becomes pressurized and portion 6a discharged providing a torque to hinder further clockwise rotation of the input shaft. If required the chamber 6 can be provided on the inner surface of the driven member 3. In a modification, Figs. 4, 6 an auxiliary body 30 is made integral with the casing 1 and has auxiliary chambers 104a-104d formed by partition walls 110a-110b and 111a, 111b formed integrally with the body 30 and input shaft 2. The auxiliary chambers 104a-104d are in fluid communication with main chambers 4a- 4d so that a torque is applied on shaft 2 in proportion to the pressure produced in the main chambers 4a-4d.
Patent GB-1197309-A (GB)
Title: Improvements in or relating to Solid Polyphase Compositions and process therefor
IPC: C08L31/04
Filed: 1967-12-29
Abstract: 1,197,309. Polyphase composition films; resin impregnated laminates. HERCULES Inc. 29 Dec., 1967 [30 Dec., 1966; 25 Sept., 1967], No. 59174/67. Headings B5B and B5N. [Also in Divisions B1-B2, C3 and C4-C5] Films comprising a solid polyphase composition characterized by comprising (a) as a continuous phase a crystallizable propylene polymer as a substantially continuous network in the crystalline but essentially nonspherulitic state and having an intrinsic viscosity of at least 2; (b) as a second phase a substance which has a theta temperature for the propylene polymer below 150 C., and which can be maintained as a liquid at 110 to 250 C., is essentially a non- solvent for the crystalline propylene polymer at temperatures below 80 C., has a cohesive energy density of 45 to 100 cals/ce. and contains at least 50 weight per cent of an organic substance that is crystalline at 20 C., the propylene polymer heing polypropylene or a copolymer of propylene with up to 25 weight per cent of a polymerizable hydrocarbon or halogenated hydrocarbon comonomer containing 2 to 20 carbon atoms, and comprising 5 to less than 60 weight per cent of the composition, may be prepared by heating the composition to 110 to 250 C., shaping, e.g. by casting on a metal substrate, and cooling at a rate of greater than 95 C. per minute. The substance (b) may be a petroleum, Fischer-Tropsch or ester wax, long chain fatty acid, alcohol or ester, glycerol ester, aliphatic hydrocarbon or derivative thereof, aromatic hydrocarbon or alkyl- or halosubstituted aromatie hydrocarbon. The second phase may also contain modifiers, e.g. rosin and derivatives, petroleum, hydrocarbon, coumarone-indene and styrene resins, and oils; and conventional stabilizers, colorants, flame-proofing agents and processing aids. Many examples are given describing the preparation of films, which may be oriented by stretching, from compositions of (3-6, 10, 20-24 and 33) polypropylene and paraffin wax, together with (7 and 8) hydrogenated rosin ester; (9) rosin ester and microcrystalline wax; (11) titanium dioxide and maleic anhydride modified amorphous polypropylene; (12) microcrystalline wax, styrene copolymer and ethylene/vinyl acetate copolymer; (13) microcrystalline wax and petroleum resin; (25 and 26) polypropylene and paraffin, crude scale, slack or microcrystalline waxes; (29 and 30) ethylene/propylene and propylene/butene copolymers and paraffin wax; (31) polypropylene and stearic acid; and (32) polypropylene and 1,3,5-triphenylbenzene . Laminates may be prepared using the above compositions as adhesives. In Example 14 non-woven polyethylene terephthalate fibre mats are impregnated with a composition of polypropylene and paraffin wax and laminated under heat and pressure.
Patent GB-1368457-A (GB)
Title: Electric switches
IPC: H01H15/18
Filed: 1971-12-22
Abstract: 1368457 Snap action switches H W SCHNEIDER 11 Dec 1972 [22 Dec 1971] 59560/71 Heading H1N A snap-action switch, Fig. 2 (showing one pole of a double pole switch), comprises pairs of terminal-type fixed contacts 3 and 4 located by insulating spacers 5 within slots 2 (Fig. 3) of a moulded casing 1 to which a cover-plate 6 carrying an insulating actuator slide 18 is attached by screws 7, and in the switch " ON ' position shown the contact pairs are connected by silver plated metal rollers 14 held by a spring 16 in rolling engagement with tracks 11 formed as part of fixed contacts 3. The rollers are revolvably mounted on the arms of a T-shaped insulating moulded lever 13 having an upstanding tubular stem 16 housing the spring 17. A cross pin 22 extends through dependent lugs 19 of the actuator slide to hold the latter within a guide slot 20 in the cover-plate and passes through diametral slots 23 in the lever stem to act compressively on the spring. When the actuator is moved there is further spring compression and the pin imparts rocking action to the lever which then moves with a combined sliding and rocking action through a dead centre position so that the rollers remain in engagement with contacts 3 but make or break with contacts 4 with a snap action. One pair of contacts 3, 4 and one roller 14 may be omitted to provide a single pole switch.
Patent GB-1383340-A (GB)
Title: Wall-mountable cabinets
IPC: E05D15/58
Filed: 1972-12-27
Abstract: 1383340 Cabinets WESTINGHOUSE ELECTRIC CORP 27 Dec 1972 [10 Jan 1972] 59612/72 Heading A4B A backless cabinet for mounting on a wall includes a door 12 which is slidable to an open position in which it overlies the top wall 18 of the cabinet, door 12 being displaceable on a telescopic slide 25 part of which is carried on the back of the door and a co-operating part of which is carried by a hinge secured to the front edge of the top wall 18. T-shaped hooks 24 are carried by the rear edges of the side walls 14, 16 for engaging slotted upright supports.
Patent GB-1202489-A (GB)
Title: Microprogrammed data processing system
Inventor: ATTWOOD DENNIS PATON
IPC: G06F9/22
Filed: 1968-12-20
Abstract: 1,202,489. Data processing. INTERNATIONAL BUSINESS MACHINES CORP. 20 Dec., 1968, No. 60556/68. Heading G4A. In a microprogrammed data processing system, simulated monitoring or control data is forced from an injection register into bit storage positions of data processing circuitry on identification of a predetermined stage in the execution of a microprogramme, thereby to initiate a system test or response other than by means of the microprogramme. Injection may occur when a preset counter, counted down as the microprogramme proceeds, reaches zero, or when a counter incremented from zero reaches a prespecified value, or when the current address supplied to a microprogramme read-only store reaches a prespecified value. A presettable mask may be used to prevent some portions of the injection register being used. A plurality of injection registers may be used at different points in the microprogramme. Retry means, normally used for retrying a macroinstruction during which an error occurred, using saved system states, may be tested by the above means by forcing simulated error indicating information in the above way. A "diagnose" macroinstruction is used to load the injection register and the means specifying the desired stage in the microprogramme from main memory, or the injection register may be loaded from a keyboard. The microprogrammes could be stored in the main memory. The bit storage positions which are forced may relate to occurrence of a parity error or availability of a peripheral unit or microprogrammo branch.
Patent GB-1327650-A (GB)
Title: Process for manufacturing propane sultone
IPC: C07D331/04
Filed: 1971-12-29
Abstract: 1327650 Propane sultone DAICEL Ltd 29 Dec. 1971 [29 Dec 1970] 60622/71 Heading C2C A process for producing propane sultone from hydroxypropane sulphonic acid comprises concentrating a starting hydroxypropane sulphonic acid containing solution by heating under a reduced pressure until the concentration ratio, which is represented by the amount of concentrated solution obtained (parts by weight)/the amount of solution charged (parts by weight) x 100% becomes 0À9-1À2 times as much as the concentration by weight per cent of hydroxypropane sulphonic acid in the starting solution, introducing continuously the obtained concentrated solution into an agitated-film evaporator, where the concentrated solution is distilled under a high vacuum of lower than 15 mm. Hg to obtain propane sultone.
Patent GB-1330240-A (GB)
Title: Semiconductors
IPC: H01G4/008
Filed: 1971-12-30
Abstract: 1330240 Contacting ceramic semi-conductors NL INDUSTRIES Inc 30 Dec 1971 [30 Dec 1970] 60867/71 Heading H1K Ohmic contact is made to a body of PTC ceramic or of N-type lanthanum-doped barium titanate by applying to opposite faces of the body a composition consisting of aluminium powder dispersed in an aqueous vehicle which contains the reaction product of a chromate and a phosphate (or of the free acids) and of at least one oxide, hydroxide or carbonate of an alkaline earth metal aluminium or iron, by drying the coatings, and by heating the coated body in an oxidizing atmosphere to a temperature in the range 590-950‹ C. Leads may be attached to such contacts, without destroying their ohmic nature, by the application (if desired, to a limited area only) of a conventional silver electrode paste, by refiring the body at a temperature in the range 650-760‹ C., and then by (for example) automated dip soldering. Instead leads may be attached directly to the contacts by the use of an aluminium solder.
Patent GB-1291770-A (GB)
Title: Method of and apparatus for drying filter cake in rotary vacuum filter apparatus
IPC: B01D33/21
Filed: 1970-12-23
Abstract: 1291770 Drying filter cake in rotary filter ENVIROTECH CORP 23 Dec 1970 [5 Jan 1970] 61082/70 Heading B1D [Also in Division F4] A rotary disc filter comprises a closed casing into which steam is introduced at 34 to be drawn through and dry the filter cake on the exposed parts of the hollow discs before said cake is scraped off at 18, and a floating layer 37 separates and thermally insulates the steam 36 from the slurry 35 in the lower part of the casing. In Fig. 1 the insulating layer 37 is foam produced naturally or generated by reagents added to the slurry. Overflow pipe 38 and weir 40 maintain the levels of slurry and foam respectively. The filter has a motor-driven agitator 44, and the shaft has separate outlets for filtrate and steam connected to a vacuum line. Fig. 4 (not shown) illustrates a modified overflow arrangement for slurry and foam, and in Fig. 3 (not shown) the insulating layer is of cork or polymeric chips. Sliding seals 41 extend between discs to separate the steam drying zone 39a from the cool air zone 39.