baber/WOPTO huggingface dataset:
Patent GB-135024-A (GB)
IPC: D03D41/00
Abstract: 135,024. Lewthwaite, J. Dec. 30, 1918. Beat-up motions; reeds.-In a loom in which warp cops are carried by tubular holder raised and lowered to form the shreds and the weft is inserted by a swinging tubular arm, the warps pass over a compound roller 11, comprising a series of thin metal plates or disks 58 threaded on a square shaft 57 with intermediate plates 61 upon which plates 64 are pivoted, the warp threads passing over the plates 61, 64 and between the plates 58, whereby they are laid parallel and the width of the cloth is determined. The weft is laid between the teeth 59, 60 on the plates 58. and the roller 11 is oscillated by cam-controlled mechanism, so that the teeth 59 sink from between the warp threads and the teeth 60 enter between these threads and beat up the weft.
Patent GB-528236-A (GB)
Title: Improvements in or relating to spring forks for cycles and motor cycles
IPC: B62K25/08
Filed: 1939-05-08
Abstract: 528,236. Spring forks. NORTON MOTORS, Ltd., and SMITH, C. G. May 8, 1939, No. 13638. [Class 136 (iii)] A spring fork of the tele scopic type for motor and other cycles comprises on each side a rigid tube secured a its upper part to the steering stem, a moving tube of large diameter adapted to slide ove the lower part of the fixed tube and to receive the whee spindle, a compression spring fitting over the fixed tube anc abutting between a shoulder thereon and the upper end of a bush or sleeve which is de tachably secured in the uppe end of the moving tube and i a sliding fit on the fixed tube and a further compression spring fitting over the lower part of the fixed tube and abutting between the lower end of the bush or sleeve and a collar secured on the lower end of the fixed tube. Eacl side of the fork comprises a fixed tube 10 rigidly mounted at its upper end in two vertically-spaced members 11 12 projecting laterally fron the steering-head, the member 12 terminating in a flanged lug 13 which is clamped between a shoulder 14 and a nut 15 screwed on to the tube 10, while the member 11 terminates in a split lug 16 to receive the upper end of the tube 10. A lower tube 20, provided with a fitting 30 to receive the wheel spindle, slides over the tube 10 under the control of a main spring 26 interposed between the collar 14 and a slidable bush 21 screwed into the upper end of the tube 20, a rebound spring 28 being arranged between the bush 21 and a guide collar 22 secured on the lower end of the fixed tube 10 between a spring ring 23 and a screw-plug 24. The upper part of the tube 10 is enclosed in a tubular shield 18, and the spring 26 is enclosed in a telescopic cover 27. The tube 10 may be of greater diameter at the middle of its length where the stresses are greater.
Patent GB-333170-A (GB)
Title: Improvements relating to electricity meters
IPC: G01R11/00
Filed: 1929-05-02
Abstract: 333,170. Chamberlain & Hookham, Ltd., and James, S. May 2, 1929. Counting-apparatus. - Electricity and other metering or indicating devices, intermittently and individually connected with summation apparatus, are provided with a rotary, reciprocatory, or oscillatory contact mechanism actuated by the meter &c., for energizing alternately two electromagnets, or a single double-acting electromagnet, the armature of which operates a trip lever latched to a further armature carrying contacts in the circuit energizing the summation apparatus. As shown, Fig. 5, each meter, &c., is provided with a rotary contact device a, doubleacting electromagnet e and trip mechanism g, m with restoring coil i. A continuously or intermittently rotated central switch w, v successively connects the meters &c., when contacts c, d are closed, one of the coils e being then energized and rocking the lever f which operates the trip lever g either directly, or through an electromagnet, and releases the armature h to close contacts r, s energizing the coil t of the summation apparatus. The armature h is weighted and delayed in its restoring movement to permit the summation of each impulse to be effected.
Patent GB-528915-A (GB)
Title: Manufacture of amidines
IPC: C07D233/24
Filed: 1939-05-08
Abstract: 528,915. Amidines. SOC. OF CHEMICAL INDUSTRY IN BASLE. May 8, 1939, Nos. 13684 and 13685. Convention dates, May 11, 1938, and April 15, 1939. [Class 2 (iii)] Amidines are prepared by reacting an aliphatic amino acid having an aromatic or heterocyclic residue as a substituent at the nitrogen atom, or an imido-ether, imido halide, or thioamide of such an acid, with ammonia or a primary or secondary aliphatic, araliphatic, or heterocyclic amine. The compounds comprise the structure where A is an amino alkyl residue containing an aromatic or heterocyclic residue as a substituent on the nitrogen atom. The products may be open chain or cyclic compounds. In the latter case both amidine nitrogen atoms are united by an alkylene chain as in an imidazoline or tetrahydropyrimidine ring. Amines mentioned include saturated or unsaturated alkylamihes, alkylene diamines, aralkyl amines, heterocyclic amines such as aminopyridines, aminoquinolines or aminobenzthiazoles, and cyclicamines such as piperidine. In examples: (1) phenylaminoacetimido-ethyl ether hydrochloride is 'treated with ammonia in alcohol solution to give phenylaminoacetamidine. The phenyl group may be substituted for instance by an alkyl-, alkoxy-, oxy-, aryloxy-, amino-, nitro-, or carboxyl-group. Similarly there may be obtained α-phenylamino-n-caprylic acid amidine, the γ-phenylamino-butyramidine, or the #-phenylamino-n-caproic acid amidine; (2) phenylaminoacetimidoethyl-ether is reacted with piperidine in alcohol solution to give phenylaminoacetpiperidine. Instead of the ethyl ether, the propyl ether may be used. (3) Phenylaminoacetimidoethyl-ether is reacted with #-phenylethylamine in alcoholic solution to give phenylaminoacet-#-phenylethylamidine. (4) Phenylaminoacetimidoethyl-ether hydrochloride is reacted with ethylenediamine in alcohol solution to give 2-(phenylaminomethyl)- imidazoline hydrochloride. Instead of ethylenediamine there may be used 1:2 or 1:3-propylenediamine to give a corresponding product: (5) Phenylaminothioacetamide and ethylenediamine are heated together in an oil bath to give phenylamino-methyl-tetrahydropyrimidine. In similar manner a number of similar compounds may be obtained which are specified. The imino-ethers which are used as parent materials for the process of the invention may be obtained easily when the condensation of the alcohol with the nitrile in the presence of an acid such as hydrochloric acid is conducted in chloroform solution. 6-Methoxy-quinolyl-8-aminoacetonitrile and 6-methoxy-quinolyl - 8 - amino - y - butyronitrile may be prepared by the reaction of 6-methoxy- 8-aminoquinoline with chloroacetonitrile and #-chloro-butyronitrile respectively. 4-Methoxyphenylaminoacetonitrile may be obtained from para-anisidine-formaldehyde bisulphate and potassium cyanide in aqueous solution.
Patent GB-800923-A (GB)
Title: Improvements in or relating to frequency separating arrangements
IPC: H01P1/213
Filed: 1956-05-03
Abstract: 800,923. Frequency-separating networks. COMPAGNIE GENERALE DE TELEGRAPHIE SANS FIL. May 3, 1956 [May 18, 1955], No. 13684/56. Class 40 (8). A band-pass arrangement designed to separate a band of frequencies centred on a frequency #1 from a number of other adjacent bands centred on frequencies #2, #3 . . . #n comprises two magic-T junctions 8, 9 whose symmetrical arms 3, 4 and 3<SP>1</SP>, 4<SP>1</SP> are connected by waveguides of equal length containing bandpass filters, the waveguides and filters being so arranged and constructed that a path difference of one half wavelength (#g/2) exists between the portions of wave energy reflected by the filters over an extended range of frequencies. The input, comprising signals on channels #1, f2, #3 . . . #n, is applied to the H -arm 1 of the magic-T 9 where it is distributed equally between the symmetrical arms 3, 4. The filters F1,3 and F1,4 are tuned to a centre frequency #1 so that energy in this channel passes to the magic-T 8 and is coupled into the output arm 1<SP>1</SP>. Because of a difference of #g/4 in the electrical distances between the junction 9 and the filters F1,3, F1,4 a path difference of #g/2 exists between the portions of energy in channels f2, f3 ... #n, reflected back to the junction 9 and this energy is coupled into the E-arm 2 of the junction. If the waveguides 3, 4 were of identical cross-section the electrical length of the longer path would increase more rapidly with frequency than that of the shorter path. In order to ensure a constant path difference over the whole range of frequencies f2 ... #n the cut-off frequency of the guide 4 providing the shorter path is increased by fixing a metal insert 7 against one of its narrow walls. Alternatively, the cut-off frequency of the other guide 3 may be decreased by providing a ridge of metal on one of the broad faces. A combination of these two methods may be used. The branches 31, 41 of the junction 8 are similarly modified so that the circuit can be used for operation in both directions. Matching posts t are provided at the waveguide bends.
Patent GB-215200-A (GB)
Title: Improvements in and relating to dynamo-electric machines
IPC: H02K1/18
Filed: 1923-05-23
Abstract: 215,200. Marks, E. C. R., (Ideal Electric & Manufacturing Co.). May 23, 1923. Cores; field magnets, cooling.-The laminations 2 of a dynamo stator are held between rings 3 and kept in place by hollow pins 6 passing through lugs 5 on the rings. The rings 3 bear against webs 7 on the box-casing 1 and engage with notches 16 thereon, wedges 4 being provided for tightening. Recesses 10 in the rings 3 surrounding the pins 6 and a space 18 between the laminations 2 and webs 7 allow of the circulation of cooling air, as do the passages through the pins 6. The pins 6 pass through notches in the laminations 2 embracing rather more than half the circumference of the pins. The pins are shouldered at one end as shown at 8 and riveted over as shown at 9, the lugs to which they are thus secured being formed with bosses on their faces. At the other end the pins simply fit into holes in the lugs. The pins may be shouldered and simply fit into the lugs at both ends, or the two types of pins may be used alternately.
Patent GB-187645-A (GB)
Title: Improvements in and connected with the manufacture of mixed mesh wire netting
IPC: B21F27/06
Filed: 1921-05-17
Abstract: 187,645. Lloyd, H. D., Guthrie, A. S., and Whitecross Co., Ltd. May 17, 1921. Making netting.-In making mixed-mesh wire netting with large and small meshes woven simultaneously, the two sorts of mesh are separated by a straight central wire, which is in twisted connection with both sorts of mesh. The machine consists of two reciprocating beams, Z, Z, fitted with half-pinions H, J, K, 9, 10, 1 &c., which are rotated by a rack to twist the corresponding wires Hx, J<x>, K<x>, 9<x>, 10<x>, 11<x>, &c. The beams carry at one end twice the number of half-pinions per unit length of beam as is necessary for the large mesh and thus produce a series of overlapping meshes having the same shape as the plain mesh at the other end of the beam but spaced at half the normal pitch. The central wire 21, round which both meshes twist, passes through the. slots 23 cut in the adjacent edges of the beams and is thus kept in one position during the reciprocation of the beams. The same arrangement may be used at the selvedges 22 as shown at the left hand side. The halfpinions are supplied with shuttles 20, " dummy " half-pinions 12, 20<x> being used in weaving the selvedge. The weaving at the line A, A is carried out with the beams in the position shown in Fig. 2 and that at B, B when the beams have moved to the position shown in Fig. 3.
Patent GB-702127-A (GB)
Title: Improvements in or relating to article of furniture
IPC: A47C5/04
Filed: 1953-05-15
Abstract: 702,127. Furniture joints. HAMILTON, E. F. May 15, 1953, No. 13694/53. Class 52(2) In an article of furniture having tubular metal legs interconnected by stretchers each leg to which a stretcher is to be connected is provided with an elongated slot and the stretcher 15, 16 is flattened at its ends as at 20 the flattened portion 20 being provided with a lateral extension with a notch 22 and being trimmed or cut away as shown. To assemble the stretcher the flattened end is inserted into the leg through the slot, the stretcher being held as shown in dotted lines in Fig. 4. The stretcher is then swung upwardly until the notch 22 engages the lower end of the slot. The parts of the stretcher ends and slots are so formed that it is necessary to force the upper ends of the legs together by securing them to the seat 10 thereby applying stresses to the stretcher and leg joint to form a tight joint and eliminate rattling
Patent GB-367252-A (GB)
Title: An improvement in the manufacture of envelopes
IPC: B65D27/22
Filed: 1931-05-09
Abstract: 367,252. Envelopes. ROWNTREE, E. A., Sandringham, Kingsbury Avenue, St. Albans, Hertfordshire. May 9, 1931, No. 13735. [Class 146 (ii).] An envelope for transmission at the cheap rate is formed with a flap having an oblique projection a and a convex projection b and a curved underpart c, d provided with a lip e. The part b folds over the part c, and the part a folds over the lip e and is inserted under the part d.
Patent GB-127818-A (GB)
Title: Improvements in Valves suitable for Pneumatic Tyres.
IPC: F16K15/20
Filed: 1919-05-30
Abstract: 127,818. Michelin et Cie. June 7, 1918, [Convention date]. Tyre and like inflating-valves. -A tyre valve, of the kind having a lift valve member adapted to engage a seat in a supplementary fitting detachably secured to the main stem, has the valve spindle and the securing- nut so formed as to prevent their detachment from the supplementary casing. The supplementary casing B is held against a packing E by a nut C and is provided at its upper end with threads to receive a nut F for securing a dust-cover G having a packing H. The conical valve member D has a deformed stem D<1>, and has its movement limited by a stop K
Patent GB-1518874-A (GB)
Title: Hair colourant
IPC: A61K8/00
Filed: 1976-04-06
Abstract: 1518874 Dyeing hair with silver salts BEECHAM GROUP Ltd 28 April 1977 [6 April 1976] 13810/76 Heading D1B Keratinous fibres, e.g. human hair are dyed in dark shades by applying evenly to the surface silver acetate, or sulphate in the absence of a reducing agent preferably in solution in water or aqueous alcohol and then exposing the fibres to light and air. The silver salts may be applied in creams, gels or shampoos or sprays containing 0.01 to 2% w/w of the salts.
Patent GB-595097-A (GB)
Title: A new or improved folding back rest
IPC: A47C9/10
Filed: 1945-06-01
Abstract: 595,097. Back-rests. HOWES, P. W., and LAING, C. L. N. June 1, 1945, No. 13814. [Class 52(ii)] A folding back-rest comprises a length a of canvas or the like secured to a rod c, the ends of which are pivotally connected by screws or bolts e to rods b, d the lower ends of which rest on the ground and may have scoop-shaped elements g pivotally connected at h to prevent excessive sinking.
Patent GB-1187271-A (GB)
Title: Improvements in and relating to Screens
IPC: B07B1/48
Filed: 1967-03-23
Abstract: 1,187,271. Screening apparatus. ORVILLE SIMPSON CO. 23 March, 1967 [25 March, 1966], No. 13857/67. Heading B2H. [Also in Divisions E2 and F2] In an arrangement wherein a screen 15 is held in a frame 10 and tensioned by a plurality of S-shaped spring tensioners 17, formed e.g. of strip spring material and used e.g. for releasably mounting the screen in a power driven sifting and screening machine, each spring tensioner comprises a mounting portion 39 of approximate 'C' shape which is adapted to be received and retained within the correspondingly shaped frame channel 18, 22, and a screen tensioning portion 70 which is of general 'U' shape, the mounting portion 39 comprising upper and lower lobes 44, 45 which are joined, at one side only, by a flexible, preferably inwardly bent, section 46 which allows the lobes to be displaced towards each other, and the tensioning portion 40 consisting of a lower bend 48 one leg 47 of which has an outwardly inclined tab 41 for engaging in a corresponding screen opening 53. The frame, which may be of curved or polygonal shape, and which is made e.g. of stainless steel or aluminium, has a lower shoulder 23 and flange 24 which facilitates introduction of the spring tensioners into the channel 18- 22, the spring tensioners being slidable longitudinally of the channel to position them for engagement with a corresponding opening 53 after which, tensioning of the U-shaped legs 47-49, causes the mounting portion to be constrained within the channel. A removable sealing and cushioning strip 35 has an internal cavity 60 for releasably engaging studs. 26 on the lower face of the frame 10.
Patent GB-174884-A (GB)
Title: Improvd pen point
IPC: B43K8/00
Filed: 1921-06-20
Abstract: 174,884. Coggans, W. I. June 20, 1921. Pens; reservoir nibs.-Conical pen points, of the kind having longitudinal wedge-shaped grooves 2 of such depth that near the end remote from the writing-point they merge into an ink-retaining cavity within the cone, are provided with a number of peripheral ink-retaining gutters 4 connecting the grooves 2.
Patent GB-798572-A (GB)
Title: Improvements in and relating to electrical supply systems comprising oscillation generators
IPC: H03B1/02
Filed: 1953-05-18
Abstract: 798,572. Valve generating circuits. CAMBRIDGE INSTRUMENTS CO., Ltd. Aug. 18, 1954 [May 18, 1953], No. 13891/53. Class 40 (6). An oscillator for supplying stabilized electrical power comprises an amplifier-in the embodiment shown, resistance-capacity coupled pentodes V10, V11-having a power output stage V11, and with feed-back between the output of the power output stage and the input of the amplifier. Current feed-back is derived from resistors R42, R43 in series with the primary of the output transformer T4, positive feed-back being applied to the grid of V10 via a Wien bridge network C4, R9 and C5, RI0 Negative feed-back is applied to the cathode circuit via a thermistor R40 which stabilizes the amplitude of oscillation. This embodiment is used to provide constantcurrent D.C. by means of a rectifier MR3 connected to the secondary of the transformer T4. Excessive rise in output voltage if the load is removed is prevented by shunting the primary of the transformer with a non-linear resistor R41. In another similar embodiment, Fig. 1 (not shown), providing a constant voltage output, the feed-back is of the voltage type, being taken from a tertiary winding on the. output transformer. In arrangements of this type, the thermistor R40 is of high resistance during the warming-up period, which reduces the negative feed-back and so allows an excessive amplitude of oscillation. To prevent this, the thermistor is provided with a heater R40a, fed from the valve heater supply via a resistor R29. When the apparatus is initially switched " on " relay contacts A1, A2 remain open, so that the positive feed-back loop is open and in addition the thermistor R40 is rapidly heated by heater R40a to a lowerthan-working resistance. Contacts A1, A2 are closed after a suitable time interval, by a relay A in the anode circuit of a thyratron V12, the anode potential of which rises at a rate determined by a long-time-constant circuit R32, C34. When the thyratron V12 fires contacts A1, A2 close, contact A2 shortcircuiting the heater R40a so that the thermistor cools until the negative feed-back is sufficiently reduced for oscillation to commence. Additional relay contacts A3 render the relay selfholding, discharge condenser C34 and extinguish the thyratron V12. The arrangement may be adjusted to give over-compensation for changes in supply voltage, in which case complete compensation can be obtained by adding a portion of unstabilized D.C. to the output, via a resistor R50. A further embodiment is also described, Fig. 2 (not shown), in which the amplifier comprises an input stage, a phase-splitter, and a pair of power tetrodes in push-pull, working into a transformer having two secondary windings. One winding provides two D.C., H.T. supplies via rectifiers and the other A.C. for valve heaters, being also used to provide the amplifier feed-back circuit.
Patent GB-670726-A (GB)
Title: Evaporating caustic soda solutions
IPC: B01J8/30
Filed: 1949-05-25
Abstract: <PICT:0670726/III/1> An aqueous solution containing between 80 and 95 per cent of caustic soda, is sprayed, at a temperature between 200 DEG  and 300 DEG C, through an inert gas such as air so as to form solid caustic soda as granules which accumulate as a bed; and the granules in the bed are dehydrated to a water-content less than 0.5 per cent, by maintaining the granules in a dense, fluidized state in an upward current of inert gas.  The granules formed are preferably between 0.5 and 1.0 mm. in diameter, and are fluidized by gas moving upwards at a velocity between 2 and 4 ft./sec. Caustic soda solution is pumped from tank A into tower B through spray C; and dry air is simultaneously blown through pipe D into the base of the tower wherein it passes upwards through perforated plates G and E.  The drops of solution evaporate in the upper part of the tower to give moist granules of caustic soda, which collect as a fluidized bed above plate E.  The granules gradually flow down pipe F and collect as a fluidized bed above plate G where they are finally dehydrated and cooled by the incoming air.  The cool anhydrous granules leave the system through pipe H.  The moisture-laden air leaves the tower through pipe J; it is freed from fine particles in cyclone K, and from moisture in cooler L, and the dry air returned to the base of the tower.  More than two fluidized beds may be used.  Other gases mentioned are methane, natural gas, and the rare gases.  The liquor may be sprayed upwards so that it rises considerably and then falls as granules on the fluidized bed.  Specifications 558,879 and 612,530 are referred to.
Patent GB-1137935-A (GB)
Title: Process and apparatus for the production of pyrogenic oxides
IPC: C01B13/22
Filed: 1966-03-30
Abstract: 1,137,935. Pyrogenic oxides. CABOT CORP. 30 March, 1966 [8 April, 1965], No. 13981/66. Heading C1A. By application of sonic energy to a gas stream, in an apparatus for the production of pyrogenic metal and silicon oxides, deposition of oxide on the burner apparatus can be largely eliminated. Sonic energy between 20-20,000 cycles/sec. is specified as being suitable, with 100-500 cycles/sec. as the preferred range. The sonic energy may be supplied by an electric horn or, preferably, by passage of part of the reactant gas, via a wind horn, to the reaction zone. The examples relate to the vapour phase oxidation of titanium tetrachloride.