baber/WOPTO huggingface dataset:
Patent GB-1492390-A (GB)
Title: Pitch change means for the fan blades of a bypass ducted fan propulsion engine
IPC: F01D7/00
Filed: 1974-12-10
Abstract: 1492390 Variable pitch blades; jet propulsion engines UNITED AIRCRAFT CORP 10 Dec 1974 [8 April 1974] 53400/74 Headings F1C F1J and F1T Impeller blades 12 of a ducted fan for a jet propulsion engine are varied in pitch by a ring gear 20 the surface 22 of which is wave-like, which engages non-circular gears 18 such that adjacent blades rotate at different rates.  As reversal of pitch from that in Fig. 2A to that in Fig. 2C is effected by rotating gear 20, the blades will pass through the intermediate position, Fig. 2B, at different times so that even if they overlap, adjacent blades will not interfere with each other.
Patent GB-1285345-A (GB)
Title: Linen drying cabinet, more particularly for clothing, linen and the like
IPC: D06F58/04
Filed: 1969-11-03
Abstract: 1285345 Laundry dryers INDUSTRIE A ZANUSSI SpA 3 Nov 1969 [19 July 1969] 53845/69 Heading F4G A laundry dryer comprises a fixed cabinet 10, a foraminous drum 12 rotatable about its own axis 13 and having a front loading window 40 and a circuit for the assisted circulation of hot air in the interior of said drum, characterized in that the drum is supported and rotated by a front set of at least two rollers 17, and a rear set of at least two rollers 32 in engagement with the outer cylindrical surface of said drum, motive means 31 to rotate at least one set of rollers aforesaid, said rollers in each set being symmetrically arranged with respect to the axial vertical plane of said drum, and guiding means to prevent any axial shifting thereof. Said motive means employ a belt and pulley to drive the rollers of the rearset from the motor 31 of an exhauster 29 for the drying hot air, said rollers having a knurled sheath of resilient material, and are mounted in a cantilever fashion on pins which carry the drive pulleys. The front rollers are mounted for free rotation about independent pins fastened in a cantilever fashion to the front wall of the cabinet. The drum is open at its rear end and has a perforated closure disc solidly affixed to the cabinet wall, the drying air being fed through said disc axially inside the drum. The drum guiding means comprises a projecting bead jutting from the outer surface of the drum, said bead co-operating with a groove formed in the front rollers to permit rotation and not axial translation of the drum. The drying air is heated by a plurality of air-heating gas burners 24, having piezoelectric firing means 25, positioned horizontally in the upper section of the cabinet.
Patent GB-1208894-A (GB)
Title: Process for producing carbon filaments
Inventor: OTANI SUGIO
IPC: D01F9/145
Filed: 1967-11-28
Abstract: 1,208,894. Carbon filaments. KUREHA KAGAKU KOGYO K.K. 28 Nov., 1967 [29 Nov., 1966], No. 54106/67. Heading C1A. Carbon filaments are produced from a pitch containing carbon and hydrogen of which carbon contributes 95 to 96À5% by weight, the pitch containing more than 60% by weight of chloroform soluble constituents, said constituents having a mean molecular weight of at least 400 by melt-spinning, rendering the spun fibres infusible and carbonizing. The pitch preferably contains less than 25% by weight of matter insoluble in chloroform. The filaments are rendered infusible by oxidation, e.g. in air at 250‹ C., and then carbonized in the absence of oxidizing gases, e.g. at 1000‹ C., the rate of temp. increase in such carbonizing step being 10‹ C./min. or higher. The carbon filament obtained may be graphitized, e.g. at 2000‹ C. Pitch having the desired properties may be obtained by treatment, e.g. distillation of other pitches. One or more auxiliary substances, e.g. sulphur, an organic compound containing sulphur, an organic or inorganic peroxide, and/or a chloride and/or a sulphide of a metal may be added to the starting material at any time prior to the melt spinning step. Specification 1,091,890 in which pitches having a carbon content of 91-95% by wt. are treated as above is referred to.
Patent GB-1120235-A (GB)
Title: Process for the combined preparation of urease and trypsin inhibitor
Inventor: SCHAFER GERHARD
IPC: C12N9/80
Filed: 1965-12-21
Abstract: Urease and trypsin inhibitor are extracted from soya bean flour by defatting the flour with trichloroethylene, and then extracting with dilute aqueous ethanol and dialysing the extract, precipitating the dialysate with acetone, extracting the precipitate with dilute neutral aqueous sodium citrate, and precipitating urease from the extract with acetone, and drying it.  The residue from the initial ethanolic extraction is extracted with dilute saline at 28 DEG  to 40 DEG C., acetone added, and the resulting precipitate dried, re-extracted with saline and dialysed, and trypsin inhibitor precipitated from the dialysate with acetone, and dried.
Patent GB-1225010-A (GB)
Title: A two stop-position hairclip
Inventor: TINI FRANCO
IPC: A45D/
Filed: 1968-11-15
Abstract: 1,225,010. Hairclip. F. TINI. 15 Nov., 1968 [15 Nov., 1967], No. 54462/68. Heading A4V. A hairclip comprises a support member 6, a portion 7 formed as a fork having a straight length 8 joining two curved prongs 7<1> which are substantially parallel in plan view (Fig. 1), the straight length being surrounded by a bent plate 9 to form a hinge, a horizontal plate 13 formed integral with the support member supporting the bent plate 9 by a pivot 12, and a second horizontal plate 10 integral with the support member having hooking seats (10<11>), Fig. 5 (not shown), in lugs 10<1> to hold the ends of the prongs. The fork 7 and plate 9 can rotate on pivot 12 so that fork 7 can assume two positions when located in the seats (10<11>). The support member is curved, as in Figs. 3 and 5.
Patent GB-1170309-A (GB)
Title: Improvements in or relating to a Process for the Continuous Bulk Polymerization of Styrene
IPC: C08F2/02
Filed: 1967-11-30
Abstract: 1,170,309. Bulk polymerization of styrene. PLASTUGIL. 30 Nov., 1967 [14 Dec., 1966], No. 54632/67. Heading C3P. Styrene as the sole polymerizable constituent with optionally a minor proportion of a modifier consisting of an elastomer or of methacrylic acid, with optionally a lubricant, is continuously bulk polymerized by being passed between two diathermic walls for a reaction period of 15 min. to 3 hours at a constant temperature between 130‹ and 160‹ C. corresponding for the polymer formed, to a Fikentscher K value of 50-80, the ratio between the heat exchange surface area S of both walls and the thickness e of the monomer circulating therebetween, per unit volume of the reaction mixture, being at least 0À02 cm.<SP>-2</SP> in CGS units; a mixture of unreacted monomer and styrene polymer containing 30-80% by wt. of polymer is collected at the outlet of the walls and this polymer is separated from the monomer. The elastomer may be a styrene-butadiene or natural rubber. A polymerization apparatus is shown in Fig. 8.
Patent GB-1452274-A (GB)
Title: Microfilm reading system
IPC: G03B21/11
Filed: 1972-11-28
Abstract: 1452274 Microfilm reading system I D FRASER 23 Nov 1973 [28 Nov 1972] 54979/72 Heading G2X A microfilm reading system comprises a microfilm record in which reading material is in one or more columns of lines of characters, and the length of each line of each column's restricted to not more than 26 characters, including spaces, and further comprises viewing apparatus having an optical magnification system which presents an enlarged image of part of the length of the column to the reader in the appropriate orientation for reading and a drive system which effects continuous transport of the microfilm record in the direction of the column and thereby presents successive lines of the column to the reader, whereby the reader's eyes are not required to move from line to line and, by virtue of the restricted length of each line are not required to execute lateral movements either. Desirably each line contains a complete thought unit comprehensible in one glance by eye and brain. One form of viewing apparatus comprises a cassette having bobbins 19 and 20 to which the film 21 is attached. A projection lens 26 in alignment with aperture 24 produces a magnified image of the film passing through the gate at 23, the image being projected on to a screen by an optical system (not shown), a light source being attached to plate 18. The film is advanced by a driving capstan 27 and a squeeze roller 28 mounted on the pivoted, spring-biased arm 31. In an alternative form inclined columns are arranged on a microfilm so that when they are wrapped round a cylindrical support they form a continuous helix.
Patent GB-1165193-A (GB)
Title: Improvements relating to Machines for Drawing-Off Yarn from Reels or Bobbins and for Laying same in Cans
IPC: B65H54/76
Filed: 1966-12-09
Abstract: 1,165,193. Filling cans with yarns. CROON & LUCKE MASCHINENFABRIK G.m.b.H. 9 Dec., 1966 [29 Sept., 1966], No. 55254/66. Headings D1D, D1F and D1J. Yarn is fed into a rectangular can, which is being reciprocated in a first direction, by a pair of feed rollers extending in a second direction, perpendicular to the first direction, with one of the rollers being reciprocated in the second direction. As described there are a plurality of can filling stations extending in a row. Each station has a reciprocable feed roller connected to a common reciprocating rod, and a yarn guide upstream of the feed rollers and so connected to the rod that it reciprocates with the feed roller and also relative thereto to prevent localised wear of the feed roller which is composed of, or has a coating of, silicone rubber. The rod is reciprocated by being in screw threaded engagement with a stationary nut and by being rotated by a drive the direction of rotation of which is changed by adjustable limit switches engageable by an abutment on the rod. Each reciprocable feed roller is mounted on a pivoted frame and on yarn breakage, is moved away from the other feed roller which is driven and extends over all the cans. If the yarn is supplied from a skein holder a brake is applied to the holder on thread breakage. A yarn may alternatively be supplied from a bobbin creel. The cans are supported on two carriages each of which is reciprocated by a chain driven by a shaft. Adjustably positioned limit switches are disposed at the reversal points of one carriage and reverse the direction of drive to the shaft. The cam walls may be composed of gratings.
Patent GB-1424929-A (GB)
Title: Circuit breaker
IPC: H01H71/50
Filed: 1973-12-03
Abstract: 1424929 Circuit breaker latching GENERAL SWITCH CO 3 Dec 1973 [1 Dec 1972] 55848/73 Heading H1N A circuit breaker comprises a housing 14 containing a latch arm 32 pivoted at 30 and latched into an aperture in a latch member 64, there being locating means, such as the moulded projection 40, to locate the latch arm relative to the latch member and thereby reduce the effects of dimensional instability of the housing. The strip steel latch member 64 is operated as a result of overcurrent through a bimetallic strip 70 which bows against the adjusting screw 94 thus pivoting the latch member 64 to release the end 36 of the latch arm 32 and allow it to turn anti-clockwise about pivot 30 under the action of spring 62 and so trip the breaker (Fig. 2, not shown). Preferably the distance between the latch member 64 and the locating stop 40 is a small fraction, e.g. one-tenth, of the length of the latch arm to provide maximum stability. The latch arm is held in the aperture 90 of latch arm 64 against the action of the over-toggle spring 62, one end 61 of which is located in an arcuate manually-operable member 22 having a handle 26, the other end 63 being located in a contact arm 46. The contact arm carries a contact 54 co-operating with a fixed contact 56 and pivots against a bent-over portion 44 on the latch arm. During the opening and closing of the breaker the contact arm engages with a stop 52 which acts as a cam in co-operation with the shaped edge 104 to 51. If sticking of the contacts occurs on opening, the movement of the arcuate member causes a projection 23 to knock against the end of the contact arm 49 and thus initiate breaking movement. Under shortcircuit conditions the magnetic field set up by current through the bimetallic strip attracts the latch member 64 to release the latch arm more quickly. Manual operation is effected by arcuate movement of the handle 26 and member 22 which moves the spring 62 over its deadcentre position and causes the contact arm 46 to rotate anti-clockwise against pivot 44 on latch arm 32 (which is held fixed in the latch member) and thus open the contacts 54, 56 (Fig. 3, not shown).
Patent GB-1434389-A (GB)
Title: Noncaking compositions
IPC: C05G3/30
Filed: 1973-12-05
Abstract: 1434389 Non-caking fertilizer composition; hydroxy-aluminium nitrate CHEVRON RESEARCH CO 5 Dec 1973 [15 Jan 1973] 56341/73 Headings C1A and C1B Particulate fertilizer compositions comprise one or more hygroscopic inorganic fertilizer salts intimately admixed with 0À01 to 5% by weight, based on the composition, of a hydroxyaluminium polymer, represented by the formula wherein n is 1À0 to 2À9, X is an anion and y is the valency of X. The fertilizer salt may be ammonium nitrate, ammonium sulphate, ammonium phosphates, ammonium chloride, potassium chloride or mixtures thereof. The addition of the polymer to fertilizer salts renders the mixture non-caking and amenable to bulk storage and handling. Hydroxy-aluminium nitrate is prepared in aqueous solution (a) by reacting aluminium nitrate nonahydrate with aluminium powder in water in the presence of urea and (b) by boiling under reflux a mixture of aluminium nitrate nonahydrate, water and aluminium hydroxide dried gel.
Patent GB-1311706-A (GB)
Title: Burglar alarm switch
IPC: H01H21/28
Filed: 1970-12-03
Abstract: 1311706 Retractive switches; switch contacts J BECK 3 Dec 1970 [15 May 1970] 57563/70 Heading H1N A switch, suitable for operation by a window, for example in a burglar alarm system, comprises an insulating block 20 having a recess 30 into which two contact posts 25 and 26 extend, and a unitary blade-like spring member having one end portion 65 anchored in the block to resiliently engage one contact post 25 while the other end extends out of the recess in the form of a tongue 61 which is bent to form a V-shape with a base portion 64 to provide make and break contact with the other post 26 in response to external engagement of the tongue 61. The posts 25 and 26 are preferably screws to which external connections (13, 14, Fig. 4, not shown) are secured, and a cover (40) is fixed to block 20 by riveted eyelets through which mounting screws (50, 51) pass. When the window 2 is opened the tongue 61 is released and the part 62 engages post 26 (Fig. 5A, not shown). Alternatively the blade may be assembled such that part 62 passes around post 26 and is held in contact therewith (Fig. 6, not shown) by the window 2, the switch then being opened when the window is opened (Fig. 6A, not shown).
Patent GB-1185740-A (GB)
Title: Method of making Castings
Inventor: DUNLOP ADAM
IPC: B22C9/04
Filed: 1967-12-20
Abstract: 1,185,740. Moulds, patterns, treating castings. A. DUNLOP. 21 May, 1968 [20 Dec., 1967], No. 57868/67. Heading B3F. [Also in Division B5] A plurality of castings are made by providing a plurality of patterns (each pattern having a portion corresponding to the shape of an article to be cast and a rise portion, the riser portions of all the patterns being of the same shape), attaching the patterns to a support and investing them with a refractory material, the patterns being so disposed that at least part of the space between them is bridged by the refractory material, removing the patterns to form a multicavitied shell-mould and filling the cavities separately with a molten casting material. A wax pattern (Fig. 1) comprises a portion 10b (in the shape of a golf club head) and a portion 10a constituting a riser. The riser has projections 10c and there is a groove (not shown) between portions 10a and 10b. Several patterns are located on a wax covered metal plate 11 (having a handle 12) and invested by dipping in ethyl or sodium silicate solution, immersing in a fluidized bed of refractory material and hardening. Investment is repeated several times, the patterns being then melted away to give the shell-mould illustrated in Fig. 3. The mould may also include refractory or ceramic reinforcing inserts 17 (Fig. 8). Treating castings.-After pouring a molten moulding material into the mould and stripping the mould from the product, the risers of the product are held in a jig by their projections and the golf club heads are cut away by a single stroke of a saw guided in the grooves between the risers and golf club heads.
Patent GB-1444554-A (GB)
Title: Multilayer printed circuits
IPC: H05K3/46
Filed: 1972-12-15
Abstract: 1444554 Printed circuits DEFENCE SECRETARY OF STATE FOR 8 Jan 1974 [15 Dec 1972] 58007/72 Heading H1R A multilayer printed circuit board (Fig. 1) having edge interlayer connections comprises a stack of copper-polyester film layers 1 cemented to a glass fibre base board 2; components (not shown) being placed on the upper side of the stack with leads extending through insulated holes of the layers and soldered to copper tracks 3 on the underside extending to the edges of the board. Copper tabs 4 extending from the film layers are bent round the edges to solderably contact the tracks 3 for selective interconnection (Fig. 2). The tracks and tabs on the copper-polyester layers are defined by etching over masks. Copper screening planes may be inserted between layers, and the track/layer configuration may be computer derived.
Patent GB-1346952-A (GB)
Title: Acylated acetarylamides their preparation and use as yellow colour couplers
IPC: G03C7/36
Filed: 1971-12-17
Abstract: 1346952 Amides containing an aryloxyisobutyryl group KONISHIROKU PHOTO INDUSTRY CO Ltd 17 Dec 1971 [18 Dec 1970] 58661/71 Heading C2C [Also in Division G2] The invention comprises compounds of the formula wherein each of Ar and Ar<SP>1</SP> are aryl groups which may be substituted in the aromatic nucleus and X is H, or Cl, Br, CH 3 COO, stearoxy, phenylthio, 4-carboxyphenoxy CH 3 SO 2 O-, or benzotriazolyl. The compounds in which X is H may be obtained by reacting a compound of formula wherein R is an alkyl group, with an amine of the formula Ar<SP>1</SP>-NH 2 . The compounds in which X is other than H may be obtained from compounds in which X is H by known methods. Examples are given for the preparation of the compounds. They are useful as colour couplers for silver halide emulsions. An α-aryloxy-isobutyric acid ethyl ester may be obtained by reacting an α-halogeno-isobutyric acid ethyl ester with an optionally substituted phenol in the presence of sodium alcoholate. An α-aryloxy-isobutyryl acetonitrile may be obtained by treating the previously formed ester with sodium acetonitrile. An α-aryloxy-isobutyryl acetic acid ester may be obtained by imino-etherification and hydrolysis of the previously formed nitrile.
Patent GB-1368304-A (GB)
Title: Friction engaging device
IPC: F16D13/50
Filed: 1971-12-17
Abstract: 1368304 Friction clutches NISSAN MOTOR CO Ltd 17 Dec 1971 [22 Dec 1970] 58665/71 Heading F2C   A diaphragm spring friction clutch for a motor vehicle comprises a driven plate 12 normally clamped between a driving plate 6, which is fast with and axially spaced from a driving flywheel 4, and a presser plate 15 fast with an axially movable clutch cover 16 by a diaphragm spring 18 which acts between the driving plate 6 and clutch cover 16. Leftward axial movement of a clutch release bearing 19 acts on the diaphragm spring 18 to effect leftward axial movement of the clutch cover 16 and presser plate 15 for clutch disengagement. The clearance between the presser plate 15 and driven plate 12 during clutch disengagement prevents leftward axial thrusts imparted to a driven shaft 2 from a following change speed gear from engaging the driven plate 12 and presser plate 15.
Patent GB-1174560-A (GB)
Title: Lighting Arrangement for Motor Vehicles
IPC: B60Q1/14
Filed: 1968-12-10
Abstract: 1,174,560. Vehicle lighting systems. DAIMLER-BENZ A.G. 10 Dec., 1968 [12 Dec., 1967], No. 58672/68. Heading H2H. A lighting arrangement for a motor vehicle comprises means whereby, for parking purposes, lights on one side or the other, of the vehicle may be selectively illuminated. A motor vehicle is provided with front parking lamps 1, 3 and front side lamps 5, 6, the lamps 7, 8 being utilized for both parking and lighting at the rear of the vehicle. At each side of the vehicle the lamps 1, 5 and the lamps 3, 6 are connected to the lamps 7, 8 respectively by way of diodes 22, 23 and 24, 25. Movement of a contact 10 of a rotary switch 9 to a contact 15 will illuminate the lamps 1, 7 on one side of the vehicle for parking purposes but illumination of the lamp 5 on that side of the vehicle is prevented by the blocking action of the diode 23. Movement of the contact 10 to contact 16 causes similar operation of the lamps 3, 6, 8 on the other side of the vehicle. When the contact 10 is moved to either of contacts is, 19 lamps 5, 7 and 6, 8 are illuminated by way of a contact 21 in the switch 9 for normal side and rear light purposes, illumination of the lamps 1, 3 being prevented by the action of diodes 22, 25. In another embodiment a single lamp at each side of the vehicle serves for both parking and side light purposes.
Patent GB-1430399-A (GB)
Title: Keyboard switch assembly
IPC: H01H13/48
Filed: 1973-12-20
Abstract: 1430399 Retractive switches BOWMAR INSTRUMENT CORP 20 Dec 1973 [2 Jan 1973] 59172/73 Heading H1N A keyboard switch assembly comprises pushbuttons 22 each of which actuates a resilient, conductive switch device 14 from a rest position to a deflected position in which it interconnects co-planar conductors such as 30-3, 32, Fig. 5, carried by, for example by being printed on, an insulating board 12, at least one other conductor being provided on the board spaced from and co-planar with the first-mentioned conductors and extending under the switch device but having no electrical connection therewith in either of its positions. As shown, the switch device is a snap-acting dome of, for example, square, triangular or circular shape and formed with dimples or projections 64, 66 on its periphery and at the centre thereof respectively, which form contact portions for engaging the conductors. The switching devices are located in apertures 74 in an insulating sheet 16 superimposed on the board 12 and over which is laid a flexible insulating cover sheet 18. The assembly is completed by a cover member 20 which is apertured at 76 for retention and location of the push-buttons. The latter have X-shaped projections 78 which act through the sheet 18 on the switching devices. The conductors and parts thereof which are not engaged by a particular switching device may be covered with an insulating layer (56), Fig. 7 (not shown), and the contact portions of the conductors may be plated with gold on nickel. Fig. 11 shows a modification in which an insulating sheet 82 extends between the sheet 16 and board 12 and has apertures such as 86, 88 which expose the contact portions of the conductors for engagement by the dimples 64<SP>1</SP>, 66 of the switching device 14<SP>1</SP>.