baber/WOPTO huggingface dataset:
Patent GB-295465-A (GB)
Title: Improvements in roll-film spools for photographic cameras
IPC: G03B17/30
Filed: 1927-06-08
Abstract: 295,465. Thornton-Pickard Manufacturing Co., Ltd., Pickard, A. G., and Slinger, F. June 8, 1927. Feeding webs. - The spool is formed at one end with a cylindrical journal A, adapted to fit in a corresponding bearing in the camera, as by stamping a ferrule b from the end disc B or by extending the wooden barrel of the spool through this disc; and is formed at the end with a round hole d to fit on a round pin on which it rotates. In the journal A is formed a hole b of square, triangular, or keyhole section to engage with the winding key of the camera.
Patent GB-737040-A (GB)
Title: Method of producing ú­-amino-salicylic acid phenyl ester
Filed: 1953-06-01
Abstract: A method of producing p-amino-salicylic acid phenyl ester comprises reacting 4-acetamino-2-acetoxy-benzoic acid with an inorganic acid chloride and esterifying the reaction product thus obtained with phenol in the same or in a subsequent operation, whereafter the acetyl group or groups present in the acetylated phenyl ester is or are removed by boiling the ester with a solution of a strong acid in a medium substantially consisting of an organic solvent miscible with water.  As acid chlorides may be used phosphorus oxychloride or thionyl chloride.  The formation of the organic acid chloride and the esterification can be effected in one operation by heating N,O-diacetyl-p-aminosalicylic acid with phenol and phosphorus oxychloride (the O-acetyl group also being removed) to give N - acetyl - p - aminosalicylic acid phenyl ester.  The removal of the acetyl groups by heating with acid yields the product in the form of a salt from which the base is liberated by treatment with water.  In examples: (1) 4-acetamido - 2 - acetoxy - benzoic acid is treated with thionyl chloride to give the corresponding benzoyl chloride, which is reacted with phenol to give 4-acetamido-2-acetoxy-benzoic acid phenyl ester. The acetylated ester is boiled with normal alcoholic hydrogen chloride, giving 4-amino salicylic acid phenyl ester; (2) 4-acetamido-2-acetoxy-benzoic acid, phenol and phosphorus oxychloride are heated together to give N-acetyl-p-amino-salicylic acid phenyl ester, which on refluxing with 2-normal ethanolic hydrogen chloride gives the desired ester.
Patent GB-1263144-A (GB)
Title: Aluminium production furnaces
Inventor: VARDA GIUSEPPE DE
IPC: C25C3/08
Filed: 1969-03-24
Abstract: 1,263,144. Electrolytic furnaces. MONTECATINI EDISON S.p.A. 24 March, 1969 [26 March, 1968], No. 15251/69. Heading H5M. [Also in Division C7] To prevent the molten metal collected on the bottom of the vat of a multi-cell electrolytic furnace from electrically shunting the suspended bipolar electrode system 5, 7, 8, 9, steps 1 are provided in the bottom leading down to a collecting or tapping groove 2 so that the continuity of the molten metal is interrupted. The steps may be made of silicon carbide combined with silicon nitride. The steps and risers may be inclined to the horizontal and vertical respectively. The steps may have projecting lips (Figs. 2 and 3, not shown) to aid in drop formation or may be concave or so inclined that they provide an overflow system for the molten metal. More than one collecting groove 2 may be provided. Each collecting groove 2 serves at least three cells. Each step 1 is positioned beneath one cell 5, 7. Aluminium is produced in the furnace by thermal electrolysis of alumina in a molten bath containing fluoro-compound e.g. cryolite.
Patent GB-1073334-A (GB)
Title: Methods of producing corticotrophin polymers
IPC: A61K38/00
Filed: 1965-04-09
Abstract: Substances having enhanced cortico-tropic activity are produced by treating a "natural" corticotrophin (including synthetic polypeptides of lower molecular weight but similar activity to natural ACTH) by a method known per se for forming peptide linkages by dehydration between terminal -NH2 and -OH groups, whereby a poymer (e.g. a drimer or trimer) of the original compound is produced.  The preferred method is treatment with an N,N\sv-disubstituted carbodiimide e.g. N,N\sv-dicyclohexyl carbodiimide.
Patent GB-1057234-A (GB)
Title: Turbine engine
IPC: F01D5/14
Filed: 1964-04-14
Abstract: 1,057,234. Gas turbine plant; turbine blades. CHRYSLER CORPORATION. April 14, 1964 [July 25, 1963], No. 15354/64. Headings F1G and F1T. Prior to the assembly of a gas turbine engine, Fig. 1 (not shown), having a centrifugal compressor 24 driven by an axial flow turbine 26 and a separate power turbine 48, the actual flow areas of a series of turbines 26 and corresponding nozzle blade assemblies 42 are determined experimentally on test rigs, Figs. 10, 11 (not shown), under conditions corresponding to maximum engine speed. A turbine 26 and nozzle assembly 42 are then selectively matched so that the ratio of their actual flow areas is within 1% of the ideal flow area ratio as determined empirically, thus ensuring that the engine will be capable of developing its full rated power. In the embodiment the ideal ratio of the nozzle assembly 42 to the turbine 26 is 1 to 1À5. The turbine and nozzle assembly are also matched as a sub-assembly to the compressor 24 so as to ensure compressor operation within limits defined by the compressor's characteristic surge and choke lines.
Patent GB-180565-A (GB)
Title: A box constructed to take sets of brushes for boot outfits and the like
IPC: A47L23/16
Filed: 1921-06-03
Abstract: 180,565. George, H., and Haslam, G. E. June 3, 1921. Contents, facilitating access to.-A box or cabinet for boot-cleaning outfits &c. comprises an inner case with hinged flaps c adapted to slide in an outer case or frame b in such a manner that when the inner case is drawn out the flaps move to an horizontal position so as to be supported on the top of the outer case. Hinged stops e prevent the inner case from dropping back into the outer portion, permitting the top a<1> of the inner case to be used as a rest. Spring clips f or other means are provided on the flaps or within, the inner case for holding the brushes or other articles.
Patent GB-115583-A (GB)
Title: Improvements in or relating to Flexible Gas Containers particularly applicable to Motor Road Vehicles.
Inventor: SHORT HUGH OSWALD
IPC: B60K15/03
Filed: 1917-10-23
Abstract: 115,583. Short, H. 0., and Short, A. E. Oct. 23, 1917. Holders.-The outer enclosing case 1, of one or more gas containers 2, is supplied with pressure air to maintain the shape of the case while the containers are permitted to contract on deflation. This pressure air may be supplied by a blower, air pump or fan &c. 10 driven by the engine, or a cowl or cowls open to the atmosphere, with the mouths open in the direction of travel, may be fitted to the case. Perforated partitions 3 may separate the containers 2, and a valve controlled leak &c. may maintain the casing pressure at a predetermined value.
Patent GB-752273-A (GB)
Title: Method of producing alloys of lead and alkali metals
IPC: C22C11/02
Filed: 1954-05-25
Abstract: Alloys of Pb with one or more alkali metals are produced by dissolving Pb in an amalgam of the alkali metal or metals and eliminating mercury from the resulting composite amalgam by distillation.  The original alkali-metal amalgam is obtained preferably from a mercury cathode electrolytic cell and may be concentrated in alkali metal content before adding the Pb.  The amount of Pb added may be such that the atomic alkali metal/Pb ratio is between 0,1 and 3.
Patent GB-141386-A (GB)
Title: Improvements in and relating to wireless telephone systems
IPC: H04B1/50
Filed: 1916-10-30
Abstract: 141,386. British Thomson - Houston Co., (General Electric Co.). Oct. 30, 1916. Wireless telephony.-To enable a two-way conversation to be carried on by wireless telephony, separate aerials are used for transmission and reception at each station, and a telephone circuit communicating with a telephone exchange is connected to the transmission and reception circuits of each pair of aerials. Fig. 1 shows one of the stations comprising a transmitting-aerial 3 and receiving-aerial 4 placed far enough apart to prevent interference. Different frequencies are used for transmission at the respective stations, and the receiving-aerial at each station is tuned to the transmission frequency of the other station. A telephone circuit 10, 11 is connected on the one hand to the transmitting-aerial 3 through a magnetic controller such as is described in Specification 7151/13, and on the other hand to the detector circuit 14 of the receiving-aerial 4. The telephone circuit 10, 11 may be connected through the telephone exchange 9 to a subscriber's circuit 8.
Patent GB-529214-A (GB)
Title: Improvements in or relating to sewing machines, particularly button-sewing machines
IPC: D05B3/14
Filed: 1939-05-25
Abstract: 529,214. Sewing-machines. FAIRWEATHER. W. C. (Singer Manufacturing Co.). May 25, 1939, No. 15498. [Class 112] A sewing-machine adapted to operate through a predetermined cycle and then stop automatically is provided with means whereby the stop mechanism may be rendered inoperative so that the cycle is repeated ; in particular, in a button-attaching machine, the stitches for a fourhole button may be formed in two separate groups or in a continuous group with a crossover stitch, and a two-hole button may be attached with the same total number of stitches as the four-hole button or with half that number. In the button-attaching machine shown in underneath plan, the button-clamp 29 is vibrated longitudinally of the machine, in stitching through a pair of holes, by an arcuate cam-actuated lever 25 adjustably connected to a link 28 and is moved laterally, in shifting from one pair of holes of a four-hole button to the other, by a lever 38, pivoted at 39, connected to a cam-actuated lever 33 by a pin 36 engaging slots in both these levers and movable along the slots by manual control means; one extreme position of the pin 36 is coaxial with the pivot of the lever 33, as shown, this position producing no shift of the buttonclamp and being used for two-hole buttons, while the other position is determined by an adjustable stop 42. The cam 19 actuating the lever 25 operates the button-clamp for the production of a cycle of eight stitches, concluding with a tying stitch, in each half-revolution, and the cam 31 actuating the lever 33 is adapted to shift the button-clamp at the end of each halfrevolution. The stop-gear comprises a sliding member 44 engageable with a lug 48 on the handwheel 8 but spring-pressed to the disengaged position; the other end of the member 44 is arranged to abut against an arm 52 having slight swinging movement on a pin 53 by which it can be depressed clear of the member 44 against a spring by a push-button. The arm 52 has an upwardlyextending pin near its end, normally riding on the under side of the cam 31 and adapted to spring into a hole 58 in this cam at the end of each half revolution thereof ; when the pin enters one of these holes 58, the arm 52 moves into line with the member 44 and continued rotation of the cam causes the arm 52 to move the member 44 to stopping position ; depression of the arm 52 allows the member 44 to spring back and free the wheel 8 for re-starting. In order that two successive cycles of stitches may be sewn without stopping, as in attaching a fourhole button with a cross-over stitch or a large two-hole button, one' of the holes 58 may be obstructed by a plate 60 pivoted at 61 on the cams and actuated by a finger-piece beneath the cams ; this plate is spring-pressed against the cam 31 to hold it frictionally in either position.
Patent GB-1465749-A (GB)
Title: Catalyst and process for the polymerization of a-olefins
IPC: C08F4/68
Filed: 1974-04-08
Abstract: 1465749 Supported olefin polymerization catalyst STANDARD OIL CO 8 April 1974 [16 April 1973] 15502/74 Heading C3P [Also in Division C2] Alphaolefins are polymerized in the presence of (a) an organoaluminium compound and (b) a reaction product of (i) a compound of a transition metal of Groups IVb and Vb and (ii) either a magnesium salt of a halogen-substituted carboxylic acid or a reaction product thereof with an aluminium halide. Examples refer to the homopolymerization of ethylene in the presence of (a) Et 3 Al, and (b) (i) TiCl 4 , TiCl 3 (OBu), VCl 4  or an equimolar mixture of TiF 4 , TiCl 4 , TiBr 4 , TiI 4  and Ti(OBu) 4  and (ii) MgOOC.CCl 3  or reaction products thereof with AlCl 3 .
Patent GB-338491-A (GB)
Title: Improvements in cinematograph projectors
IPC: G03B41/04
Filed: 1929-05-18
Abstract: 338,491. Hatfield, H. S., and Bowell, G. B. May 18, 1929. Kinematograph apparatus.-In continuous-feed projectors, the film is illuminated over an area narrower, in the longitudinal direction, than the height of one picture. As shown, the apparatus comprises alight source 2, condenser 3, rocking compensating reflector 7, projection lens 12, and shutter 8, the reflector being rocked by a cam 4 through a sliding piece 5, pivoted shoe 6, and a .lever on the reflector axis 7<a>, controlled by a spring. The cam shaft is driven by a motor, and drives the sprocket shaft 10, &c. through gearing; the amplitude of the rocking movement can be varied slightly by moving a lever 9 to vary the position of a guide for the sliding piece 5. The condenser 3 is cylindrical, and may illuminate a strip of the film having a. width -equal to H - HW/W+R where H is the picture height, and W and B the times taken by the working and return strokes respectively, of the reflector. The apparatus may be used in conjunction with means for reproducing sounds from optical or other records, and may be used with opaque films of paper or polished steel. According to the Provisional Specification, the compensator may comprise a rotating glass block and an oscillating glass plate.
Patent GB-1326042-A (GB)
Title: Testing
IPC: G01N33/28
Filed: 1970-07-27
Abstract: 1326042 Photo-electric monitoring ENVIRONMENT ONE CORP 27 July 1970 [5 Aug 1969] 15620/73 Divided out of 1326041  Heading G1A The description is the same as that of the Specification 1326041 but the claims are directed to:- Apparatus for testing a sample of material to determine at least one characteristic correlated to the effect the material has on light comprising test circuit including input means for simultaneously supplying reference and sample input signals of the same frequency alternately; means for producing two separate alternate gate control signals of the same frequency as the input signals; gate means connected in parallel circuit relationship with said input means and supplied with said reference and sample input signals, one gate means being responsive to said first gate control signal for passing only one of the input signals and another gate means being responsive to said second gate control signal for passing only the other of said input signals, means for producing a standard signal; first differential amplifier means receiving said standard signal and the signal passed through said one gate means as its input and producing a first differential output signal; indicator means responsive to said first differential output signal; second differential amplifier means receiving said standard signal and the signal passing through said another gate means as its input and producing a differential output error signal; and means for feeding back said error output signal to said input means for supplying said input signals for regulating the same.
Patent GB-1513848-A (GB)
Title: Low cost quartz watch drive
IPC: H02K37/24
Filed: 1977-04-14
Abstract: 1513848 Electronic watches TIMEX CORP 14 April 1977 [17 April 1976] 15622/77 Heading G3T In a wrist watch having an analogue display (hands) driven by an oscillatory motor comprising a coil 78 and a permanent magnet 60, pulses from a quartz crystal controlled circuit being applied to the coil to cause a drive element 66 to pivot away from a rest position against a spring 82, the drive element carries a pawl 106 which indexes a ratchet wheel 94 to drive the display during the return movement of the drive element under the force of the spring 82, and the pulses are applied to the coil at a frequency substantially lower than the usual 1Hz, the wheel 94 serving as a centre wheel. As shown the drive element comprises a plastics body 68 carrying the coil and a counterweight 74 and moulded with integral pivot pins 70 which are supported in magnetic shunt plates 50, 52 forming the frame of a drive sub-assembly. A non-return pawl 104 is provided and Fig. 4 shows the drive element in rest position, the wheel 94 being held by a nose 113 of the drive element and by the drive pawl 106 which lies between the wheel teeth and a stop 110. A second nose 112 acts in the deflected position of the drive element. The pulses are applied once per minute, the wheel 94 having sixty teeth and a shaft 96 which frictionally carries a cannon pinion 120 to drive minutes and hours hands 108, 130.
Patent GB-1449958-A (GB)
Title: Thermoplastic composition containing vinyl chloride polymer and chlorinated low pressure polyethylene
IPC: C08L101/00
Filed: 1974-04-09
Abstract: 1449958 Vinyl chloride polymer/chlorinated low pressure polyethylene compositions HOECHST AG 9 April 1974 [14 April 1973] 15647/74 Heading C3P A thermoplastic composition comprises (a) 98-50% by weight of a vinyl chloride homo- or copolymer and (b) 2-50% by weight of a chlorinated low pressure polyethylene, the percentages being based on the sum of (a) and (b), the chlorinated low pressure polyethylene having a reduced specific viscosity of 1-5 dl./g., a "residue value" of 2-30%, a "swelling value" of 10-35%, a powder density according to DIN 53 468 of more than 420 g./l. and a chlorine content of 25-40% by weight. The chlorinated low pressure polyethylene may have a "flow value" of less than 15 sec., and at least 80% by weight of the chlorinated low pressure polyethylene preferably has a particle size of less than 0À5 mm. The "residue value", "swelling value" and "flow value" are all defined. The chlorinated may be produced by reacting a finely divided low pressure polyethylene having a reduced specific viscosity of 1-5 dl./g. with chlorine in a fluid bed at a reaction starting at 50 to 90 C. and ending at 125 to 150 C. The low pressure polyethylene may have been thermally pretreated in the absence of oxygen at 50 C. up to its crystallite melting point, The polymer to be chlorinated can also be fluidized during the course of the chlorination by a reaction gas or a mixture of inert gases, e.g. N 2 , CO 2  or HCl. The fluidized bed chlorination may be carried out in the presence of inert substances, e.g. talcum, silica gel or barium sulphate. The chlorination may also be carried out in the presence of a peroxide catalyst or high energy radiation. The thermoplastic composition may contain PVC stabilizers such as barium and cadmium laurates, epoxides, organic phosphites and tin and lead compounds Comonomers with the vinyl chloride in polymer (a) may be vinyl acetate, vinylidene chloride, (meth)acrylic acid esters, vinyl stearate and maleic acid esters. The K value of the vinyl chloride polymer may be 50 to 80. The examples describe compositions comprising 90% by weight of a suspension PVC having a K value of 70 to 10% by weight of chlorinated low pressure polyethylenes having different properties.
Patent GB-420821-A (GB)
Title: Improvements in and relating to the delivery of cigarettes from cigarette-making machines
IPC: A24C5/32
Filed: 1933-05-31
Abstract: 420,821. Cigarette-making machines. CHANDLER, R. J. A., 58, Holborn Viaduct, London. May 31, 1933, No. 15768. [Class 130] In mechanism for collecting oval or other cigarettes from a continuous-rod machine, in which the cigarettes are deflected from the line of delivery by a transversely moving element, the cigarettes are transferred or guided to a collector belt, to lie thereon in a position adapted to facilitate packeting, by means formed or shaped or provided with devices adapted to preclude a rotation of the cigarettes about their axes during the transfer. In one form, the cigarettes forwarded upon a band 6 are aligned axially by the edge of a plate 9 and are deflected transversely by vanes 8 on a rotating drum 7, the vanes being in two sets separated by stops 11 against which alternate cigarettes abut, the remaining cigarettes being stopped by a flange on the drum or a stationary fence. The cigarettes are delivered over the curved edge of a table 13, co-operating with light springs 14, to an endless collector belt 17 travelling on drums 18. During their transfer, the cigarettes may be controlled by transfer wheels 15 having flutes 16, or the collector belt may be provided with troughs, the flutes or troughs conforming to the shape of the cigarettes. In a further form, fluted transfer wheels are partly surrounded by a curved guide plate and deliver the cigarettes to the collector belt at their lower part. In a further form, particularly for cigarettes of circular section, the table 13 is omitted and the drum 7 and transfer wheels are replaced by suction drums, which may have grooves to accommodate the cigarettes. The first drum is arranged so that the suction is cut off at the point of delivery to the second or transfer drum. Specification 420,158 is referred to in the Provisional Specification.
Patent GB-1147743-A (GB)
Title: Collapsible article-carrier
Inventor: WOOD PRENTICE JACKSON
IPC: B65D71/58
Filed: 1966-04-07
Abstract: 1,147,743. Cartons. MEAD CORP. 7 April, 1966 [1 Nov., 1965], No. 15792/66. Heading B8P. A collapsible article carrier which can be assembled from a single blank, Fig. 2 (not shown), has a bottom wall 47, Fig. 1, with a hingedly mounted keel 49 along its medial longitudinal fold line (41), said keel 49 being engaged, by means of locking notches, to transverse partitioning tabs 50, 51 which are cut from the bottom wall 47; side walls 1, 20 foldably joined to end wall panels 4 and 22; a handle 13 possessing handle holes as shown and formed from telescoping double-thickness handle panels joined to riser panels 10 and 25; and partition straps 14, 15, (31), (34) which together with the partitioning tabs 51, 50 divide the carrier into compartments. As shown a keel tab 65 reinforces the hinged connection between the keel 49 and bottom wall 47. As described, the carrier is assembled in three stages with three gluing operations.