baber/WOPTO huggingface dataset:
Patent GB-1338133-A (GB)
Title: Sulphur-curable copolymer
IPC: C08F4/12
Filed: 1971-04-19
Abstract: 1338133 Sulphur-curable olefin-acrylic ester polymers SUMITOMO CHEMICAL CO Ltd 19 April 1971 [4 March 1970(2)] 23528/71 Heading C3P Sulphur-curable copolymers of olefins and acrylic esters in which at least some of the ester units have unsaturated groups are prepared by copolymerizing the monomers in the presence of a metal halide which is a Lewis acid, e.g. a halide of a metal of Groups IIb, IIIb, IVb, Vb and VIII of the Periodic Table. The olefin may be isobutylene, propylene, ethylene, butene-1, 2 - methyl butene - 1, hexene - 1, butene - 2, 4- methylpentene - 1, 2 - methyl - 4 - phenyl butene-1 and octadocene-1. The acrylic esters may be vinyl, allyl, isobutenyl, 1-butenyl, crotyl, 2-butenyl, cinnamyl, 3-cyclopentenyl, citronellyl, geranyl and 5 - norbornene - 2 - yl methyl acrylates; optionally together with methyl, ethyl, propyl, butyl, amyl, hexyl, 2- ethylhexyl, octadecyl, o-tolyl, benzyl and cyclohexyl acrylates. Specified metal halides are aluminium, boron and tin halides and alkyl halides; and zinc halides. Polymerization may be initiated with radical polymerization catalysts, oxygen, organometallic compounds or actinic radiation; and may be effected batchwise or continuously in bulk or in the presence of an inert hydrocarbon or halogenated hydrocarbon liquid. The products may be compounded with conventional fillers and vulcanized with sulphur in the presence of conventional accelerators. Examples describe the copolymerization of isobutylene, ethyl acrylate and (1) crotyl acrylate, (2) citronellyl acrylate, (3)norbornenylmethyl acrylate, (4) cinnamyl acrylate, (6) methallyl acrylate and (7) allyl acrylate with ethyl boron dichloride; of (5) propylene, nbutyl acrylate and crotyl acrylate with benzoyl peroxide and ethyl aluminium sesquichloride; of (8) isobutylene, ethyl acrylate and crotyl acrylate with zinc dichloride and boron triethyl; and of (9) propylene, ethyl acrylate and crotyl acrylate with cadmium dibromide and boron triethyl; the products being vulcanized.
Patent GB-853229-A (GB)
Title: Improvements in or relating to the polymerisation of ethylene and catalysts therefor
IPC: C08F10/00
Filed: 1957-07-25
Abstract: Ethylene is polymerized to crystalline linear high polymers in the presence of a catalyst composition comprising an organo-metallic derivative of aluminium and an alkoxide of a metal of Group IVa, Va or VIa, in a molar ratio of at least 20 : 1.  The catalyst is preferably an aluminium alkyl and a titanium tetraalkoxide such as aluminium triethyl and titanium tetraisopropoxide which are mixed in the absence of ethylene in an inert solvent such as n-heptane or benzene.  The ethylene is subsequently contacted with the catalyst at room temperature to 80 DEG C. and at atmospheric or superatmospheric pressure.ALSO:Butene is formed by the dimerisation of ethylene as a p by-product in the polymerisation of ethylene in the presence of a catalyst composition comprising an organo-metallic derivative of aluminium and an alkoxide of a metal of Group IVa, Va or VIa at room temperature to 80 DEG C. and atmospheric or superatmospheric pressure.  The formation of butene is favoured by molar ratios of organo-metallic to alkoxide of less than 20:1 and of the use of a composition formed in the presence of ethylene.  The use of aluminium triethyl and titanium tetraisopropoxide in n-heptane or benzene is exemplified.ALSO:A catalyst composition for polymerizing ethylene comprises an organo-metallic compound of aluminium and an alkoxide of a metal of Group IVA, VA or VIA in a molar ratio of at least 20:1. The composition is preferably of an aluminium alkyl and a titanium tetraalkoxide in a molar ratio between 20:1 and 250:1 in an inert hydrocarbon solvent.  If prepared in the presence of ethylene the catalyst favours the formation of dimer.  The examples give details of compositions of aluminium triethyl and titanium tetraisopropoxide in n-heptene or benzene.
Patent GB-599096-A (GB)
Title: Improvements in and relating to transplanting tools
IPC: A01C5/02
Filed: 1945-09-13
Abstract: 599,096. Garden tools. HORNSBY, T. Sept. 13, 1945, No. 23595. [Class 6 (ii)] A transplanting tool comprises a pair of concave blades 1 disposed with their concave faces towards each other. Each has an upwardly projecting integral shank 3, one crossing the other diagonally and pivoted together. The blades 1 have their rear edges 4 touching in the closed position, there being a gap between the front vertical edges 9 at all positions to permit the passage therebetween of a plant stem. The blades 1 may be formed of sheet material and taper slightly towards the lower edges which are curved and sharpened. The shanks 3 may be provided with stiffening ribs and a lug may be provided on one shank to limit the outward movement of the blades.
Patent GB-1304719-A (GB)
IPC: B31B7/00
Filed: 1970-05-15
Abstract: 1304719 Making lined bags ZELLSTOFFFABRIK WALDHOF 15 May 1970 [16 May 1969] 23681/70 Heading B5D Lined bags are made semi-automatically on a machine which stops after each mechanical step and recommences only by operation of a switch when the next step is carried out. Some operations are carried out mechanically and some manually. The lining is placed over fingers 16 which are initially vertical and a lever 15 is raised by a cam, whereby pins 13 engaging slots 25 move members 14 and the fingers 16 outwardly to extend the lining (Fig. 2a). At the next step a lever 11 is moved up and the pins 13 engage inclined portions 22 of the slots 25 and ears 24 are formed in the lining. Simultaneously, two platforms 12 pivoted to the top of lever 11 unfold to a horizontal position. Next, the lever 15 is moved upwardly slightly and members 18 engage stops 19 thereby pivoting fingers 16 about pivots 17 so that the ears 24 are moved out slightly. The outer cover of stiff paper which was placed over the lining after the formation of the ears and the moving of platforms 12 to their horizontal position, is folded in and a strip of adhesive applied to the base. When a switch is actuated by the operator, the machine is returned to its initial condition and the lined bag is removed.
Patent GB-332078-A (GB)
Title: Means for altering the alignment of a conveyer or other belt at different parts of its travel
IPC: B65G15/06
Filed: 1929-08-02
Abstract: 332,078. Hopkinson, A. Aug. 2, 1929. Flat endless - belt conveyers; driving- gear.-In order that the direction of an endless belt A used for conveying or transmitting power may be changed, a loose bight shaped into an appropriate curve or spiral is formed in it between two pairs of gripping rollers B<1>, B<2>; C<1>, C<2> which are geared together.
Patent GB-873046-A (GB)
Title: Crystalline butadiene polymers 1,4-cis configuration and process for preparing them
IPC: C08C2/06
Filed: 1957-07-29
Abstract: A polybutadiene having 1, 4-cis-enchainment which is sulphur-vulcanizable to produce a product which at 20 DEG C. is amorphous when unstretched and shows crystallinity under X-ray examination when stretched and has a stresselongation diagram of a shape similar to that of a vulcanized natural rubber is made by polymerizing butadiene in the presence of a catalyst made by contacting a compound of titanium wherein the titanium is in its maximum valency state and has each of its valencies satisfied by chlorine atoms or three of its valencies satisfied by chlorine atoms and the remaining valency satisfied by an alkoxy group, with an alkyl metallic compound of aluminium, zinc or beryllium, the p  said alkyl metallic compound and said compound of titanium being used in a molar ratio of 1 : 1 to 2,5 : 1 and subjecting the polymerization product to solvent fractionation followed by further extraction or dissolution and reprecipitation.  In the examples, butadiene is polymerized in the presence of a catalyst made from titanium tetrachloride, and triethyl aluminium, triisobutyl aluminium, trihexyl aluminium or diethyl zinc, the products being extracted successively with acetone, methyl ethyl ketone and diethyl ether, the product being dissolved in diethyl ether, the resultant solution being cooled to precipitate the polymer which is redissolved in ether at room temperature, the solution being cooled to 40 DEG C. and the precipitate separated by decantation, the operation being repeated three or four times to produce a polymer having a 1, 4-cis content of 80%-85%.  The polymer obtained being sulphur vulcanized in the presence of zinc oxide, stearic acid and 2, 21-methylene-bis (4-methyl-6-t-butyl phenol).  Specification 834,554 is referred to.
Patent GB-1468438-A (GB)
Title: Circuit arrangement for converting analogue signals into pulse code modulation signals and pulse code modulation
IPC: H04B14/04
Filed: 1974-05-30
Abstract: 1468438 Analogue to PCM interconverter SIEMENS AG 30 May 1974 [29 June 1973] 23934/74 Heading H3H A circuit for converting analogue signals to pulse code modulation and vice versa using a non-linear conversion curve comprises a pulse train fed register associated with a digital to analogue converter and integrator which together produce an analogue signal and the corresponding, non-linearly related digital (PCM) signal. For analogue to PCM transmission, the register is clocked until the generated analogue value equals the input analogue sample, the register contents being transferred to a store and transmitted. For PCM to analogue conversion, the register is clocked and its contents compared with the input PCM signal, the analogue signal being transmitted at equality. As shown, clock generator TG supplies clock pulses to Register Reg which comprises eight divide by two circuits. The output of the last divider stage is supplied to differentiator IS which supplies pulses operating the circuit input and output gates. The divider contents are fed to digital comparator Vgl 2 the other input of which comes from PCM input gates e1-e8 and dynamic store Span, to blocking gates GS1-GS8, output store Spab and output gates Ga1-Ga8 and, in part to digital to analogue converter DS and DG which generates a voltage corresponding to the register contents. The analogue input voltage is stored on capacitor C1 and compared with the generated analogue at Vg11 and the output analogue voltage is stored on capacitor C2 prior to transmission. The analogue signals are transmitted to and from subscriber station Tln. In operation, register Reg is cycled continuously by the clock puless. For analogue to PCM conversion, at the start of a cycle a pulse from differentiator IS closes switch Sab and sets the analogue voltage on capacitor C1. When comparator Vg11 signals equality of input and generated voltage, bi-stable FF is set closing gates GS1 and GS8 and preventing further change in store Spab which normally contains the same value as the Register Reg. At the end of the register cycle the pulse from IS enables gates Ga1-Ga8, transmitting the PCM signal and resets bi-stable FF. The pulse also closes switch Sab starting the next conversion cycle. For PCM to analogue conversion, the PCM input at e1-e8 is applied to store Span on a pulse from IS. At equality in comparator Vgl2, switch San1 is closed and the generated voltage is transferred to C2. At the end of the cycle San 2 is closed and transmits the analogue signal.
Patent GB-1511476-A (GB)
Title: Rotary drier
IPC: F26B13/10
Filed: 1977-06-08
Abstract: 1511476 Drying textile webs BOEWE BOEHLER & WEBER KG 8 June 1977 [15 June 1976] 24032/77 Heading F4G An apparatus for drying textile webs comprises a casing containing a rotatably mounted perforated drum, means for conducting air, preferably heated, from outside the casing to impinge radially on the drum so that a portion of the air is passed through the web into the inside of drum, both this portion and the rest of the air flowing in directions parallel to the drum axis towards the end faces of the drum, opposite which, mounted on or near to doors or flaps in the casing, are air coolers for condensing moisture in the air.
Patent GB-717222-A (GB)
Title: Improvements in or relating to transducers having an adjustable electrical impedance
IPC: B06B1/06
Filed: 1952-09-26
Abstract: 717,222. Ceramic crystals. BENDIX AVIATION CORPORATION. Sept. 26, 1952 [Oct. 8, 1951], No. 24211/52. Class 40 (4) [Also in Group XL (b)] A sub-aqueous trans ducer comprises a ceramic crystal with a number of pairs o juxtaposed electrode: arranged in a series circuit. A bariun titanate ring 13 is mounted in a sound absorbent mass 15 in side a casing 10 closed by a sound-transparent window 11. The ring abuts against a steel cylinder 14 and the casing is otherwise filled with a liquid 16. The inner and outer electrodes 17, 18 are divided into two parts and connected electrically as seen at 25a in Fig. 4, so that the impedance is four times that of the usual element seen at 25b. In Fig. 4, which is a circuit arrangement suitable for an arrangement of six elements 25b arranged symmetrically round one element 25a, the power dissipated by each element is the same and the impedance of the circuit is <SP>4</SP>/ 7  that of one of the elements 25b.
Patent GB-1402946-A (GB)
Title: Parting tool
IPC: B23B27/04
Filed: 1973-05-21
Abstract: 1402946 Parting off tools F ANGST 21 May 1973 [2 June 1972] 24220/73 Heading B3B A parting off tool comprises a holder 1 having a reversible cutting insert 7 mounted on a seating of a blade like forward portion 3 of the holder, the insert 7 being secured by a bridge type clamping member 9 secured by a screw 8 to the holder 1. The cutting insert has a cutting edge formed by a central portion 12 and two side portions 13 set back from the central portion for forming separate cuttings during a cutting operation. The cutting edges are formed at each end of the insert to permit the insert to be reversed when one end becomes blunt as a result of use. Stop pins 5 are provided on the holder against which the inoperative end of the insert abuts.
Patent GB-281810-A (GB)
Title: Electrical oscillation generators
IPC: H03B5/34
Filed: 1926-10-01
Abstract: 281,810. Kirke, H. L. Oct. 1, 1926. Thermionic generators.-Thermionic oscillation generators comprising two or more mutually-coupled valves are controlled as to frequency by vibratory devices such as piezoelectric crystals and are caused to oscillate at the true natural frequency of the crystal &c. by adjustment of the phase of the reaction. The valve plates are connected through resistances or chokes to the HT supply, and the grids through leak resistances c, d to bias batteries. The plate of the first valve V1, which may have high impedance, is connected through a condenser b to the grid of the second valve V2 which is of low impedance. The plate of the valve V2 is connected through the crystal a to the grid of the valve V1, and the grid leak d is adjusted to secure the desired amplitude and phase in the reaction oscillations supplied to that grid. Reaction effects due to inter-electrode capacity may be balanced out by any known means.
Patent GB-208205-A (GB)
Title: Improvements in temples for looms for weaving
IPC: D03J1/22
Filed: 1922-09-09
Abstract: 208,205. Brierley, F. H., Uttley, J. W., and Hall, G. H. Sept. 9, 1922. Temples.-The temple comprises one or more revoluble rollers 10, Fig. 1, provided with spikes or teeth for acting on the face of the fabric and mounted on a stud 11 or studs, the whole extent of each stud within the width of the fabric from the edge thereof being surrounded by the roller mounted upon it, so that engagement of the fabric with stationary parts is prevented. The roller is provided with teeth &c. over its whole extent. The fabric may be guided into contact with the roller &c. by a curved or inclined finger 23 integral with a temple guard 25, or by a roller, which is partly conical in shape and revolves on a stud screwed to the temple bracket 17, this finger or roller causing the parts of the fabric adjacent to the selvedge to be deflected more than other parts of the fabric. The stud 11 is provided with collars 12, 14 and a securing nut 15. The manner in which the temple brackets are secured to a carrying-shaft or to a flat bevelled bar is described. The guard 25 may have one or more openings for inspecting the fabric. The temple may comprise an outer conical metal tube 10, Fig. 5, a wooden filling 21 and a cylindrical tube 22 forming a bearing for the stud &c. 11. The guiding-finger 23, or roller, may be omitted for fabrics such as dungarees &c. The spiked' rollers may be conical as shown, or cylindrical. The temple may have two or more rollers working side uy side.
Patent GB-244951-A (GB)
Abstract: 244,951. Dickens, C. Feb. 20, 1925. Insecticides; fungicides. - Selenium or tellurium dissolved in a saturated solution of barium sulphide is used as an insecticide and fungicide.
Patent GB-341055-A (GB)
Title: Improvements in and relating to trawling gear
IPC: A01K73/045
Filed: 1929-08-10
Abstract: 341,055. Trawling-gear. PARKES, B. A., Wellvale, Warbreck Hill Road, Blackpool. Aug. 10, 1929, No. 24528. [Class 48.] A trawl board a is connected to a shackle connection k of the trawl warp h and bridle g by a chain d, and is connected to the bridle by a crowfoot chain e of such length that its projection in a horizontal plane is the same length as chain d. The point of the crow-foot is connected to a running sheave f<1> over which the bridle g is adapted to run.
Patent GB-615877-A (GB)
Title: Improvements in and relating to the traverse mechanism for rayon pot-spinning machines
IPC: D01D7/02
Filed: 1946-08-17
Abstract: 615,877. Rayon pot-spinning machines. DOBSON & BARLOW, Ltd., and HARTLEY, W. Aug. 17, 1946, No. 24552. [Class 120(ii)] The traverse bar of a rayon pot-spinning machine is raised and lowered by rocking arms which rock about an axis progressively moved in an orbit eccentric to a fixed axis, thus gradually raising and lowering the terminal points of each stroke of the traverse, the length of the stroke of the bar and the setting of the lowest point of the stroke being adjustable. A rotating heart-shaped cam 7 on a shaft 5 oscillates the arms 9, 11 of bell-cranked levers the other arms 12, 13 of which vertically reciprocate rods 4 to which are attached the traverse bars. The arms 12, 13 are formed with flat portions 14, 15 on which run bowls 16 movable in slots 17 in the heads 18 of the rods 4. The bell-crank levers are formed on concentric sleeves 19, 20 oscillatable with respect to each other upon an eccentric 21 rotatable on a shaft 6. The eccentric 21 is formed with a ratchet wheel 22 stepped around the shaft 6 by a pawl 23 oscillated with the arm 9 of the lever 9, 12. The constant traverse, as given by the cam 7, is therefore moved slowly up and down. An arm 27 may be moved by a knob 29 to lift an arm 25, pivoted at 26, so to lift the pawl 23 out of engagement with the wheel 22. To adjust the lowermost point of the traverse, the shaft 6 and with it the eccentric 21, may be turned by a handle 31, a spring-urged ball 33 main-. taining the shaft 6 in the adjusted position. The length of traverse may be adjusted, before the machine begins to operate, by setting the bowls 16 nearer to or further from the pivot sleeves of the bell-crank levers.
Patent GB-714991-A (GB)
Title: Improvements in or relating to processes for the removal of copper from speculum metal
IPC: C22C3/00
Filed: 1952-10-01
Abstract: Copper is recovered from speculum metal by melting this to red heat, then passing a current of air over the surface without the application of external heat to form a layer of metal grains with oxide coatings, which is removed from the surface of the bath. The oxidation-removal steps are repeated until the metal bath is used up. The grains are then completely oxidised while being kept in motion to avoid sinterings.  Copper is extracted from the oxidised product by heating with dilute sulphuric acid, ammonia, or ammonium carbonate, and the remaining mixture of tin and antimony, lead, or is reduced in known manner.
Patent GB-277694-A (GB)
Title: Device for opening tin cans and the like
IPC: B65D17/50
Filed: 1927-09-19
Abstract: 277,694. Ericsson, G. L., and Larsson, L. E. Sept. 19, 1927. [A Specification was laid open to inspection under Sect. 91 of the Acts, Sept. 21, 1927], Opening by cutting or tearing.-A cutting-wire 5 adapted to cut out the end of a tin is secured in a bulge or channel 4 spaced from the edge, the channel being inclined inwardly towards the centre of the end to prevent slipping of the cutting-wire. The wire may be plaited or waved so as to yield when pulled out; this is stated to increase the cutting effect. According to the Specification as open to inspection under Sect. 91 (3) (a), a cutting-wire 3, Fig. 1 (Cancelled), preferably of tinned steel, is soldered in circular form to the inside of a can end 1, one end of the wire, which is eyeleted at 4, extending through a sealed hole in the side wall 2, which the wire is adapted to cut through. Fig. 3 (Cancelled) shows a wire attached to the side wall and having an end extending through and adapted to cut out the can end 1. The wires may be of waved form as shown in Fig. 5 (Cancelled), which shows a wire attached to and adapted to cut out a can end (though the wire might be similarly applied to the side wall), and the soldered openings through which the free ends pass may be of elongated form as at 6 to facilitate the start of the cutting operation. The wires may be laid in channelshaped recesses formed in the parts. This subject-matter does not appear in the Specification as accepted.
Patent GB-630495-A (GB)
Title: Improvements in or relating to motorised attachments for bicycles
IPC: B62M25/00
Filed: 1946-08-19
Abstract: - 630,495. Controlling change-speed gear. FARINELLI, A. Aug. 19, 1946, No. 24704. [Class 80 (ii)] [Also in Groups XXVII and XXXI] Relates to motor attachments for pedal cycles (see Group XXXI) in which the chain of the bicycle is driven by a sprocket 10 on a shaft 1 driven from the engine through a change-speed gear. The output shaft 1 carries in an axial bore a gear-changing rod 26 to which is connected a lever 25 which is pivoted at 24 to a lever 22 which is pivoted at 21 on the engine gear case and actuates by means of a regulating screw the engine clutch. The other end of the lever 22 is connected to a flexible cable 29 operated from the handle bar of the bicycle. Actuation of the cable 29 causes the lower end of the lever 22 to move inwardly and the top end outwardly, thus causing movement of the lever 25. The lever 25 may act as a lever of the first or third order dependent upon which portion of this lever rests upon the edge 20a of the cover, thus causing the rod 26 to be either moved inwardly or outwardly. Thus upon movement of the cable 29 the engine is declutched and the required gear engaged by suitable positioning of the pedals ; for instance it may be arranged that the left pedal forward corresponds to the first speed, right pedal forward to the second speed, and the pedals vertical to neutral. The edge of the cover could be composed of varying extensions and serve for a larger number of speeds.
Patent GB-760079-A (GB)
Title: Fungicidal preparations and a process for preparing them
IPC: A01N59/20
Filed: 1954-08-25
Abstract: A fungicidal preparation comprises a suspension of yellow cuprous oxide in an emulsion of water in a mineral oil in the presence of sodium hexametaphosphate and a wetting agent.  A pest-controlling agent such as sulphur or a solution in oil of an insecticide or herbicide may also be added.