baber/WOPTO huggingface dataset:
Patent GB-1474685-A (GB)
Title: Radiography
IPC: G06T11/00
Filed: 1974-07-10
Abstract: 1474685 Radiography EMI Ltd 10 July 1974 [12 April 1973] 17732/73 Heading H4F A method of examining a slice of a body by X- or γ-radiation as described in Specification 1,283,915 in which the sum of the weighted estimates of the absorption (or transmission) coefficients of the notionally delineated elements of the slice interserted by each ray of each set of rays is compared with the actual absorption readings, wherein before any resulting error signal is fed back to up-date the stored estimates they are modified in such a way that they will more nearly re-construct the picture. As shown, Fig. 1, the estimates from the store 23 appropriately weighted 25a-25n by a weighting function from store 24 are summed 26 and compared 19 with the actual absorption reading for a ray 8 of radiation passing through a slice of the body 1, but before any resulting error signal is applied via multipliers 27a-27n and dividers 28a-28n back to the store 23 to up-date the estimates stored therein, the error signal from the comparator 19, e.g. 19 (r+1) Fig. 3, (it is assumed in Fig. 3 that there is a comparator for each ray in a set thereof) is applied to a respective combining circuit, e.g. 31 (r+1), together with signals derived (e.g. from 30r and 30r+2) from the errors signals relating to rays of the same set disposed adjacent the particular ray. The factor P by which the error signals are divided in circuits 30 is greater than two. Before the up-dating signals are fed back to store 23 they are divided by a factor which is less than the number of sets of rays to be processed. In addition to dividing each error signal by P and subtracting it from error signals derived from the two adjacent rays, e.g. rays r and (r+2), it may also be divided by q (where q>P) and subtracted from error signals derived from the (r - 1) and (r+3) rays. The weighting functions supplied to multiplers 25a-25n and 27a-27n are related to the degree of overlap between a ray path and each element of the slice to which the coefficient estimates relate. An alternative modification of Fig. 1 is described in which instead of including the arrangement of Fig. 3 in the feedback path back to store 23, the weighting function is chosen to cause the current estimates of the coefficients relating to elements overlapped by the ray path to more than a predetermined amount to be weighted positively and the corresponding estimates of the coefficients relating to elements overlapped by the ray path to less than this predetermined amount to be weighted negatively (Fig. 2(b), not shown).
Patent GB-1048227-A (GB)
Title: An improved cable holding device
Inventor: SECKERSON CLIFFORD ALEXANDER
IPC: F16B7/08
Filed: 1964-04-29
Abstract: 1,048,227. Conduits; cable clips. A. RAYMOND. April 28, 1965 [April 29, 1964], No. 17784/64. Addition to 1,028,026. Heading H2C. [Also in Division E2] The conduit of the parent Specification which consisted of spaced clips screwed through the web 14 to a support so as to hold cables and provided with a clipped-on cover 12 is now modified by the provision of lugs 18 bent up from the base so as to prevent crushing of the cables.
Patent GB-1330763-A (GB)
Title: Means for holding yarn during weft insertion
IPC: D03J5/00
Filed: 1971-05-28
Abstract: 1330763 Grippers for weft inserters ADOLPH SAURER Ltd 28 May 1971 [4 June 1970] 17887/71 Heading D1E A weft inserting rod, single or double acting gripper shuttle has an inclined weft inserting face 3 with a bore 2 in which there is a rod 4, the weft, upon insertion movement, sliding up the face 3 and jamming in the bore 2 under the rod 4. The weft is held across the path of the inserted by a clamp from which it may be pulled by the inserter or which may open to release the weft. In the case of a gripper shuttle 8 the rod may be spring loaded and, at the end of picking, the shuttle may encounter an abutment 14 which moves the rod 4 against the action of the spring 10 so that the weft rides in a notch 13 and is released.
Patent GB-1422570-A (GB)
Title: Process for the polymerization of a-olefins
IPC: C08F4/60
Filed: 1973-04-13
Abstract: 1422570 Olefin polymerization catalyst HOECHST AG 13 April 1973 [15 April 1972] 17915/73 Heading C3P Alpha olefins having at least three carbon atoms are polymerized in the presence of a catalyst comprising (a) a titanium trihalide, (b) a halogen-free organoaluminium compound, (c) a cyclic dipeptide of the formula in which R 1  is benzyl or alkyl, and R 2  is hydrogen, benzyl or alkyl, and, optionally (d) a phosphonic acid-N-alkyl amide of the formula in which each R is a C 1-4  aliphatic hydrocarbyl radical and the R groups may be connected with one another. In examples, propylene homopolymers and ethylene-propylene random and block copolymers are obtained under suspension conditions and also gas phase conditions in a bed of pre-formed polypropylene or ethylene-propylene block or random copolymer, using hydrogen and in the presence of (a) TiCl 3 .1/3.AlCl 3 , (b) Et 3 Al, (c) sarcosine " anhydride " (i.e. N,N-dimethyl- 1,4-diketopiperazine) and in some cases (d) (Me 2 N) 3 PO. Other components (c) mentioned are the " anhydrides " of N,N-dibenzyl alanine, N,N-dimethylvaline, N,N-dimethylisoleucine, and N,N-dimethyphenylalanine.
Patent GB-569090-A (GB)
Title: Improvements relating to gas fires
IPC: F24C3/04
Filed: 1943-10-29
Abstract: 569,090. Casting composite articles. RADIATION, Ltd., and STRINGER, W. L. Oct. 29, 1943, No. 17926. [Class 83 (i)] [Also in Group XI] The flue, or flue wall, e of a gas fire is cast in aluminium with a number of thin aluminium blades g incorporated therewith, the blades extending both inwards and outwards.
Patent GB-185270-A (GB)
Title: Improvements in apparatus applicable for use in cleaning teeth
IPC: A61C17/02
Filed: 1921-07-01
Abstract: 185,270. Harris, R. R. July 1, 1921. No Patent granted (Sealing fee not paid). Teeth-cleaning appliances. -Portable apparatus for cleaning the teeth and gums comprises a liquid-container having means mounted on it for supplying gas under pressure, a delivery pipe mounted to swivel relatively to the container carrying a fine nozzle, and a plunger actuated valve for controlling the liquid . delivered. On the container 1 is mounted a. screw stopper 2 carrying a cap 4 in which is mounted a steel cylinder 5 containing compressed gas. A piercing-tool 6 mounted in the stopper and provided with an axial passage admits gas to the container on the cap 4 being screwed down. Screwed into the stopper 2 is a cylinder 8 carrying a valve 11 actuated by a plunger 14 for controlling the passage of liquid through the pipe 9 to the outlet 21. The outlet 21 is mounted so as to swivel on the nipple 19 and carries a small bore nozzle 23 at its outer end.
Patent GB-118208-A (GB)
Title: Improvements in connection with Electric Secondary, or Storage, Batteries.
Inventor: WHITNEY FRANK EVINS
IPC: H01M50/463
Filed: 1917-12-04
Abstract: 118,208. Whitney, F. E. Sept. 20, 1917, [Convention date]. Separators. - A separator, serving also to retain the active material of the electrodes in place, consists of a rubber plate 5 about 1-64 of an inch in thickness pierced with a number of slots the width of which is very small compared with the length. The latter is about 3-16 of an inch, while the width is not greater than 1-80 of an inch, the distance between the slots being about 1-40 of an inch. The plate 5 may be formed with ribs 7 or it may be plain and used in conjunction with a second ribbed and grooved separator.
Patent GB-1422919-A (GB)
Title: Selective deacylation of n-acyl dl amino acids and cyclic lactams thereof
IPC: C12P13/04
Filed: 1974-04-24
Abstract: 1422919 Selective deacylation of N-acyl-DL- amino acids AJINOMOTO CO Inc 24 April 1974 [24 April 1973] 18023/74 Heading C2C An optically active amino acid is produced from an N-acyl derivative of a racemic amino acid, by causing or allowing an acylase in an aqueous medium having a pH of less than 7 to deacylate selectively the N-acyl derivative of the racemic amino acid so as to form one enantiomorph of the amino acid, the N-acyl derivative of the other enantiomorph of the amino acid, and a carboxylic acid corresponding to the acyl radical; and, at least throughout the selective deacylation, maintaining the aqueous medium in contact with an organic solvent which is immiscible or substantially immiscible with the aqueous medium, the respective equilibrium concentrations of the N-acyl derivative of the racemic amino acid, and of the carboxylic acid in the organic solvent being at least equal to the corresponding concentrations in the aqueous medium. In a modification, the N- acyl derivative of the racemic amino acid is replaced by an N-acyl derivative of a cyclic lactam thereof and the product is an optically active cyclic lactam. The organic solvent is preferably an aliphatic triphosphate, an aliphatic ester, an aliphatic ketone or an alcohol. After the reaction the optically active amino is recovered from the aqueous phase and the organic solvent after being stripped to remove the carboxylic acid may be heated to racemize the N-acyl derivative of the amino acid therein and the resulting solution subjected to the process of the invention.
Patent GB-880087-A (GB)
Title: Folding chair with flaring back
IPC: A47C4/10
Filed: 1960-05-23
Abstract: 880,087. Seats; folding underframes. STAKMORE CO. Inc. May 23, 1960 [Aug. 26, 1959], No. 18161/60. Classes 52(2) and 52(3) A folding chair 10 with a front leg assembly 18 connected to rear legs 12, 14 by links 40, 50 and pivoted to seat member 16 by pivots 28, the seat being also connected to a link 30 pivoted to the rear legs and pivotally connected to an extension of link 40, has the rear legs 12, 14 flared outwardly and the pivots 34, 54 mounted on acute angled brackets 36, 56 attached to the rear legs to render the pivots in axial alignment.
Patent GB-923650-A (GB)
Title: Textile yarn crimping apparatus
Inventor: SCRAGG FREDERICK
IPC: D02G1/02
Filed: 1960-05-24
Abstract: 923,650. Finishing yarns. ERNEST SCRAGG & SONS Ltd. May 16, 1961 [May 24, 1960], No. 18214/60. Class 120 (3). Apparatus for twist-crimping thermoplastic yarn comprises mechanism for moving the yarn continuously at a predetermined rate through a fluidised bed e.g. glass bellotini levitated and heated by a current of heated gas supplied at above atmospheric pressure, and a false-twister. Yarn enters the container of the bed at its upper end, is guided round within the bed, and leaves through the same end. As shown, yarn 12 from package 11 passes between nip rolls 14, 15 or a gate tensioner (not shown) over roller 31, through a perforation, or space between the threads, of a cover 21 e.g. of metallic gauze, around roller 32 in bellotini 18, again through cover 21, thence through false-twister 40, nip rolls 41, 42, and is rewound. The bed is supplied, as by a blower 37 and/or in a closed or partially closed circuit, with air heated by an electric element 36 externally of, or within, the container 16. The temperature of the bed is stabilized by a sensing element 38 influencing an adjustable control apparatus 39 for element 36. Specifications 464,981, 536,177 and 603,841 are referred to.
Patent GB-274108-A (GB)
Title: Improvements in processes for the production of aluminium in electric furnaces
IPC: C25C3/06
Filed: 1927-07-08
Abstract: 274,108. Soc. Italiana di Elettrochimica. July 8, 1926, [Convention date]. Aluminium, obtaining. - Aluminium hydroxide is supplied to an electrolytic furnace for the production of aluminium, after agglomeration bv compression or the use of a binder or both. The binder may consist of gelatine, glue, or other colloids, or of acids or salts. The hydroxide may be dried after agglomeration by the heat of the furnace. The agglomerated material may be in the form of large pieces or small grains.
Patent GB-1055656-A (GB)
Title: Single mode laser
IPC: H01S3/00
Filed: 1964-05-01
Abstract: 1,055,656. Lasers. RAYTHEON CO. May 1, 1964 [May 1, 1963], No. 18268/64. Heading H1C. In order to produce a single mode output in a laser the emitted light from one end plane of two parallel end planes defining the active medium is fed back into the active medium through the other end plane, light in the other direction being suppressed. In the arrangement shown in Fig. 3 a ruby rod 21 is provided with antireflection coatings 20 and a feedback path is provided by prisms 23, 25. In order to prevent the passage of light in the direction 27 an optical isolator 29 is positioned in the feedback path and comprises two polarizers 30, 32, a Faraday rotator 31 and a quartz rotator 33. Since the only radiation which passes the rod 21 is a travelling wave in the direction 22 the inverted population is continually depleted in a substantially uniform fashion so that no substantial unbalance in the population occurs, thus preventing the sustaining of any second mode in oscillation. Output from the apparatus may be obtained by prism 36 which if positioned in contact with prism 23 provides the full output of the laser. A Fabry-Perot interferometer in the light path could be used to further inhibit the build-up of undesirable modes. Off-axial modes are suppressed by means of lenses and aperture plates. Mirrors may be employed instead of the prisms. A light pipe can be utilized to direct the light along the desired path. Gaseous lasers may be employed.
Patent GB-237895-A (GB)
Title: Improvements in air cleaners
IPC: F02M35/022
Filed: 1925-07-18
Abstract: 237,895. Bull, A. A. Aug. 4, 1924, [Convention date]. Density separators.-Air passing into the carburettor of an internal combustion engine is freed from grit in a separator with a cylindrical casing a and a domed bottom b; vanes h are provided at the top to give the entering air a vortical motion. The lower ends of the vanes'rest in channels g on the arms of a spider f supported by a shoulder e on the cylindrical casing a. The upper ends are welded to the arms of a movable spider which is held against rotary motion by a rib on the casing. The top of the spider j engages a nut k having a screw thread m in engagement with a thread on a thimble o clamped in the elbow q leading to the carburettor. An arm p on the nut k is linked to the carburettor throttle; as the throttle is opened the nut k rises along a helical path and the spring vanes h force the spider j upwards. This changes the inclination of the vanes and increases the cross sectional area of the air passage. The air enters the casing through the vanes and passes out through the pipe q. The dust drops to the base and is discharged through openings c provided with lips x. A hood d is placed over the bottom of the casing to prevent the separated dust from rising. In a modification the thimble and vanes are made integral with the casing and' the apparatus is therefore not adjustable.
Patent GB-1501845-A (GB)
Title: Reactive matrices
IPC: C12N11/14
Filed: 1975-01-10
Abstract: 1501845 Metals coated with aminoaromatic acid/aldehyde condensates ABBOTT LABORATORIES 10 Jan 1975 [10 Oct 1973] 18507/76 Divided out of 1500127 Heading B2E [Also in Division C3] A metal powder or body, inert to water is coated with a condensate of an aminoaromatic acid and an aldehyde. The metal may be e.g. Ni, Co, Fe or Al in bar or powder form. The coated metal may be coupled chemically to organic compounds having biological or chemical activity, as disclosed in the Parent Specification. In Examples I to VIIIA 40% formalin, or acetaldehyde (Ex. V), is added to a powder of Ni, or Co, Fe, Al, or Sn (Exs. VI-VIIIA) in a boiling aqueous solution of p-aminobenzoic acid, or o- or maminobenzoic acid or 3.5-diaminobenzoic acid (Exs. II-IV). In Example IX Ni bars are used and in Example X these are further coated by adding p-aminobenzoic acid and Ni powder.
Patent GB-799576-A (GB)
Title: Improvements in or relating to apparatus for controlling tension in tape material being drawn off from a coil
Inventor: RICHARDS ARTHUR BRUCE FRASER G
IPC: B65H23/00
Filed: 1954-06-24
Abstract: 799,576. Feeding webs. BRITISH INSULATED CALLENDER'S (SUBMARINE CABLES), Ltd. June 23. 1955 [June 24, 1954], No. 18562/54. Class 100(1) An apparatus for regulating the tension of a tape 1 drawn from a coil 4 rotatable about its axis against the action of a constant braking force, comprises two parallel non-rotatable pins 25, 27 so disposed that the tape 1 passes from the coil round the pin 27 in one direction and from that pin round the pin 25 in the opposite direction, whereby, when the tape passes over the pins, friction between the tape and the surfaces of the pins brakes the tape, the pin 27 being planetarily adjustable about the pin 25 to vary the areas of contacts of the tape with the pins, and thus the braking force. The coil 4. mounted between discs 5 and 6, is braked by a brake 12. The periphery of the coil is engaged by a roller 21 carried by levers 20 secured to sleeves 18 rotatable on spindles 17. Each sleeve 18 carries a toothed quadrant 23 which engages a toothed wheel 24 rotatable on the base of the pin 25. The pin 27, carried by cranks 26, is rotated around the pin 25 due to actuation of the roller 21 upon a reduction in diameter of the coil 4. thus varying the arcs of contact of the tape 1 with the pins 25, 27. The apparatus may be used in a machine having a plurality of taping heads mounted in a rotatable cage, the core to be lapped being drawn along the axis of the cage.
Patent GB-643209-A (GB)
Title: Trigger mechanism for automatic small arms
IPC: F41A19/33
Filed: 1946-06-20
Abstract: 643,209. Automatic small arms. ZBROJOVKA BRNO NARODNI PODNIK. June 20, 1946, No. 18568. Convention date, Dec. 11, 1943. [Class 119] In a gun with a hinged butt the bolt mechanism housing 1, Fig. 1, has lugs 2 which embrace the trigger housing 3 carrying the butt 4, and the hinge pin 5 is used as an adjusting member for the change-fire mechanism. To the spring-loaded trigger 6 is pivoted a member 12 having a recessed portion 13 which normally engages the arm 10 of a sear 11 controlled by a compression spring 8. The pin 5 is shaped so that, on pulling the trigger with the pin in the single-shot position, Fig. 3, the rounded part of the pin, acting on the edge 15 of the member 12 first moves the end of the arm 10 so that the sear 11 is moved out of the path of the bolt the arm 10 then slipping from the member 12 so that the sear 11 can re-engage the bolt for release by a further pull on the trigger. In the automatic position A, Fig. 1, the flat surface of the pin engages the member 12 and keeps it in contact with the arm 10 to retain the sear out of the path of the bolt which has free movement so long as the trigger is held back.
Patent GB-330408-A (GB)
Title: Process of hardening copper
IPC: C22F1/08
Filed: 1929-06-17
Abstract: 330,408. Hedman, N. O., Nõslund, N. R., and Larsson, J. D. June 17, 1929. Hardening.-Copper articles are heated to approximately 600‹ C. and then cooled in a bath consisting of concentrated sulphuric acid and concentrated nitric acid preferably in the proportions of 14 to 1 by volume, 5-10 gms. of potash being added to each litre of the bath.
Patent GB-280140-A (GB)
Title: Improvements in or relating to connecting rods for reciprocating engines
IPC: F16H21/34
Filed: 1927-07-13
Abstract: 280,140. Renard, A. July 13, 1927. Connecting-rods. - On a master rod wherein the cap is secured to the rod by side rings the assembled big end has lugs carrying pins for subsidiary rods such pins having extensions which project into the side rings. The cap with its bearing surface 14 is held up to the head 1 of the connecting rod 2 by encircling side rings 4 and these are secured by end plates 11 and through bolts 13. The head 1 and cap have side lugs 8 each supporting a pin 7 for a subsidiary rod 6. The pins are extended at 9, into the rings 4, clearances forming passages 10, 12 for lubricants being provided.
Patent GB-864252-A (GB)
Title: A process for polymerising organosilicon compounds
IPC: C08G77/08
Filed: 1959-06-01
Abstract: 864,252. Polymerizing organosilicon compounds. MIDLAND SILICONES Ltd. June 1, 1959 [June 2, 1958], No. 18677/59. Class 2(7). An organosilane or organopolysiloxane having an average R/Si ratio of from 1 to 3, each R being a hydrogen atom or monovalent hydro carbon or halo-hydrocarbon radical, and containing at least one SiOH group per molecule, any remaining valencies being satisfied by oxygen atoms, is polymerized by contacting it with a compound of the formula:- where R<SP>1</SP> is a monovalent aliphatic hydrocarbon radical of 5 to 30 C atoms, R<SP>11</SP> is an aliphatic hydrocarbon acyl group of 5 to 30 C atoms and Y is H or CH 3 , until the desired degree of polymerization is obtained. The reaction, which can be used for making siloxane homo- and copolymers, can be effected at room or elevated temperature, and water is preferably removed from the reaction mixture. Catalysts specified are pentyl-, pentenyl-, undecyl-, undecenyl-, heptadecyl-, heptadecenyl-, C 24  H 42 - and C 21 H 41  -#-aminobutyric acids and lactams, N-caproyl glycine, N-caproyl sarcosine, N-palmityl sarcosine, N-oleyl glycine, N-behenyl glycine and N-linoleyl glycine. In typical examples (3) a liquid hydroxyl-terminated dimethylpolysiloxane of 4,300 cs. viscosity at 25‹C. was mixed with a mixture of various #-aminolactams and heated under vacuum at 80‹ to 160‹C. to give a siloxane polymer of 2,800,000 cs. viscosity at 25‹C.; (9) a hydroxylated co-polymer of monomethyl-, monoxenyl-, monooctadecyl-, monovinyl-, chlorophenylmethyl- and cyclohexyl-siloxane units was cured by heating with the catalyst of (3) at 150‹C.; (10) hexamethyldisiloxane was formed when trimethylsilanol was mixed with and allowed to stand at room temperature. Uses: in making high polymers for making silicone rubbers; curing siloxane resins which may be applied as coatings for electrical conductors or as protective coatings for wood or metal surfaces.
Patent GB-204432-A (GB)
Title: Improvements relating to wheels, wheel mountings and tracks for railway vehicles
IPC: B61C11/04
Filed: 1922-07-07
Abstract: 204,432. McGinness, M. July 7, 1922. Tyres, non-elastic, and rims. - Comprises a traction system in which the wheels and rails are formed so that a combined wedge- and rack-grip is obtained on each rail. The wheel A. Fig. 1, is formed with a groove so that it has a flange on each side of the rail. One flange C is detachable and is corrugated or toothed to engage similar corrugations or teeth E, Fig. 2, on the rail. The other flange B may be plain as shown, or may also be corrugated. On gradients the heads of the rails are too broad to allow the bottom of the groove in the wheel to run on the rail, but on level sections the rail may be narrower so that the wheel runs on the flat head of the rail. The wheels may be the ordinary driving wheels, or may be auxiliary wheels driven either from the ordinary wheels or by a separate power unit, and differential gear may be employed. They may be raised or lowered by the driver through a power-operated cylinder, and are then kept in contact with the rails by spring pressure. To allow for irregularities in the width or gauge of the track the wheels on each axle are so mounted that they have a certain amount of freedom for transverse movement. At points and crossings the outer or corrugated flange, which is preferably not so deep as the plain flange, may be raised above the head of the rails by means of ramps, the inner flanges still acting as guard flanges. In a modification, Fig. 7, a pair of wheels, one plain, the other toothed, are mounted in a frame R to give the same effect. According to the Provisional Specification, the wheels and rails may be formed entirely with plain surfaces so that the rack-grip action is not obtained.