baber/WOPTO huggingface dataset:
Patent GB-816570-A (GB)
Title: An improved cattle crush
IPC: A61D3/00
Filed: 1956-11-29
Abstract: 816,570. Animal holding appliances. W. & G. (CHALLOW) Ltd., and MOSLEY, G. W. Oct. 18, 1957 [Nov. 29, 1956], No. 36586/56. Class 81 (2). A cattle crush comprises a cage with an aperture for the passage of an animal's head and a headstock which is movable about an axis transverse to the crush, by means exterior of the cage, between a lowered aperture position in which it contacts the back of the head or neck of the animal and a raised inoperative position in which it is spaced rearwards of its pivotal axis. The cage comprises ends 4, 5 and tubular steel sides 2, 3, each of which is fitted with lower steel panels 8 and a central upper steel panel 9. A gate 6 across one end 5, is hinged to one side 3 and latched to the other side 2. Each central panel 9 is flanked on one side by a hinged panel 11 and on the other side by cross-bars 10. An aperture 12 above the gate 6 adjoins a recess 13 formed in the upper part of the gate 6 by bent tubes 14, the recess 13 forming a rest for the neck of the animal when its head extends through the aperture 12. Slotted bars 17 in each side 2, 3 receive a pole to restrain the animal at the rear. A pair of rearwardlyextending tubes 21, welded to a sleeve 19 rotatable on a cross-bar 18 above the aperture 12, carry a headstock 22. A pair of forwardlyextending tubes 23 welded to the sleeve 19 carry a counterweight 24. A link 26 extending rearwardly above the headstock 22 is pivotally connected at one end to a lever (not shown) extending from the counterweight 24 and at the other end to a lever 27 attached to a rotatable cross-shaft 28 which extends across the top of the crush. A handle 30 is used to rock the shaft 28 so that, through the link 26, the headstock 22 is moved into inoperative position where it is held by the counterweight 24 and engagement with the link 26 or is moved into operative position where it is locked when the pivotal connection between the link 26 and the lever 27 have passed through a dead centre relative to the axis of the shaft 28. In operative position the headstock 22 bears against the back of the head or the upper side of the neck of the animal. Skids 37 and towing shackles 38 are provided. In an alternative construction, the recess 13 for reception of the animal's neck is provided between an adjustable vertical bar carried by the gate 6 and one end member of a side of the frame.
Patent GB-1348904-A (GB)
Title: Oscillator circuits using a plurality of negative resistance devices
IPC: H03B9/14
Filed: 1971-08-05
Abstract: 1348904 Negative resistance oscillators WESTERN ELECTRIC CO Inc 5 Aug 1971 [7 Aug 1970] 36772/71 Heading H3T An oscillator has transmission lines 23 each with a negative resistance device 20 connected to one end and a matched dissipative impedance 25 connected to the other end, a conductor of each transmission line extends through a cavity resonator 22, resonant at a frequency f and means 27 is included for matching the output resistance seen by each diode 20 to the negative resistance of that diode and the resonator 22 and impedance matching means 27 combine the outputs of frequency f from the diodes 20 while also permitting energy of other frequencies to be transmitted to the dissipative impedances 25. The impedances 25 dissipate unwanted frequencies and have an impedance equal to the characteristic impedance of the coaxial line 23 to which it is connected. The resistance seen by each diode which may be an IMPATT diode, is made equal to the negative resistance of that diode by a transformer 27. Fine impedance matching of each diode is obtained by a movable mount, as shown by the arrows, so as to maximize the output at frequency f. After this, fine impedance matching of all the diodes is made by rotating the output waveguide 26, on a swivel joint 28, with respect to the resonator 22. The waveguide 26 and resonator 22 may operate in the TE 01  mode. When large numbers such as greater than 32, are used, additional mode suppression may be required such as by changing the Q of the resonator, inserting a mode suppression resistive film in the cavity or by using pairs of coaxial lines symmetrically located about each maximum magnetic field point. In a modification (Fig. 6, not shown) the resonator may be operated in the TE 02  mode and the diode and lines are located at null points of the electric field. Strip transmission lines may be used instead of the coaxial lines 23 and the resonator 22 may then be a strip line resonator.
Patent GB-802970-A (GB)
Title: Improvements in or relating to the preparation of high molecular weight synthetic linear polyamides
IPC: C08G69/30
Filed: 1956-12-03
Abstract: The molecular weight of linear polyamides derived from dibasic acids and diamines is increased by heating polyamides, having a relative viscosity of from 20 to 100 and an end group balance of from - 10 to + 10 microequivalents, below their melting-point, until the relative viscosity is increased by at least 50 to a value of more than 100. The end group balance is expressed in terms of microequivalents of end groups per gram of polyamide. The preferred polyamide is polyhexamethylene adipamide and the reaction is preferably carried out in the absence of oxygen.  The products of the invention may be used in the manufacture of bars, rods, tubes and bottles.
Patent GB-931763-A (GB)
Title: Improvements relating to the production of discs of foamed plastics
Inventor: SMALL ALAN MCLEAN
IPC: B26D1/00
Filed: 1958-11-17
Abstract: 931,763. Cutting apparatus. BAXENDEN CHEMICAL CO. Ltd. Nov. 16, 1959 [Nov. 17, 1958], No. 36953/58. Class 31 (1). [Also in Group XXIII] Smooth discs of foamed plastic are cut from a round rod 42 by ganged saws 31 which have teeth provided with no set and are adapted simultaneously to polish the discs. The rod 42 is fed by a block 32 and may be prevented from rotating by leaf-springs 40. The lower guide 36 may extend between the saws only sufficiently to support the rod until the discs are completely cut, in which case a stripper comb 41 removes the discs 43 from between the saws, or may extend as a comb right through the saws so that an extended comb block 32 feeds the rod until the cut discs are ejected from the end of the guide member. The rods are formed from non-circular sections by a rotatable tubular cutter as described in Specification 931,764.
Patent GB-1300514-A (GB)
Title: Microporous membranes
Inventor: BOURAT GUY
IPC: B29C67/04
Filed: 1971-08-06
Abstract: 1300514 Microporous membranes RHONEPOULENC SA 6 Aug 1971 [7 Aug 1970] 36995/71 Heading B5B [Also in Divisions B2 and C3] A microporous opaque polyvinyl chloride membrane has a porosity between 40 and 85%, the pores having a diameter of less than 0À1Á. Porosity is defined in the Specification. Preferably, the porosity is between 50 and 80%, and the membrane may have a thickness from 30 to 360Á. The membrane may be reinforced with a grid, suitably a woven fabric or netting. Such a membrane may be made by leaching a mixture of polyvinyl chloride and a poly-para (dialkylamino) styrene with a solvent for the poly-para (dialkylamino) styrene. Suitably, an aqueous solution of an acid is used in the leaching step. In a preferred method, the mixture is prepared as a film by casting a solution of the polymers in a common solvent, suitably cyclohexanone, cyclopentanone, tetrahydrofurane, dimethyl formamide, or an acetone/carbon disulphide mixture. The process may be carried out continuously. Membranes so made are useful as battery separators in accumulators and fuel cells, and also in ultra-filtration. Examples are given.
Patent GB-1040650-A (GB)
Title: Electrode assembly
IPC: A61N1/04
Filed: 1964-09-10
Abstract: 1, 040, 650. Skin-contacting electrodes. BECKMAN INSTRUMENTS INC. Sept. 10, 1964 [Nov. 5, 1963], No. 37048/64. Heading A5K. An electrode assembly for directing electrical signals from the skin comprises a non-conducting disc 12, 28 having a skin-contacting face 14, an electrolyte reservoir opening into the face and an electrode 24 positioned in the reservoir and connected to a conductor 30 extending to the exterior of the disc, a rigid perforated wall 18 being positioned in the reservoir to mechanically separate the electrode from the skin and the perforations 22 in the wall being of such size that mechanical disturbances in the electrolyte due to skin movements have a negligible effect on the electrode. The electrode, which is made of compacted powder e.g. a mixture of powdered silver and powdered silver chloride, so that it is porous is supported by a shoulder 26 in the interior opening of an annulus 12, the electrode being secured in position by two layers 40, 28 of epoxy resin or lucite. Silver wire 36 embedded in the electrode extends into the top filling layer 28 where it is connected to the conductor 30. The conductor extends through a channel 32 filled with epoxy resin or lucite. The electrode assembly is secured to the body by an annulus of adhesive tape secured on the skin-contacting surface 14, the adhesive being covered by a paper layer which is removed after the reservoir has been filled with the electrolyte e.g. a jelly containing sodium chloride.
Patent GB-1060855-A (GB)
Title: Substituted aromatic ketones
Inventor: MATHER JOHN
IPC: C07C45/00
Filed: 1963-09-20
Abstract: The invention comprises 2-hydroxy-4 or 5-alkylbenzophenones wherein the alkyl group is a branched chain of 6 to 24 carbon atoms which has been derived from an oligomer of propylene and a process for the production of 2-hydroxy-4 or 5-alkylbenzophenones wherein the alkyl group is branched comprising reacting benzotrichloride with a m- or p-alkyl phenol containing the required branched alkyl group in aqueous alkaline medium characterized in that the reaction is carried out in the presence of an alkali metal iodide or bromide.  The preparation of 2-benzoyl-4-(1,1,3,3-tetramethylbutyl) phenol by reacting benzotrichloride with p-1,1,3,3 -tetramethyl-butyl phenol.
Patent GB-1200223-A (GB)
Title: Improvements in or relating to apparatus for mounting workpieces in machine tools
IPC: B24B47/04
Filed: 1967-08-11
Abstract: 1,200,223. Grinding. K. JUNG G.m.b.H. 11 Aug., 1967 [5 April, 1967; 17 April, 1967], No. 37101/67. Heading B3D. A workpiece support for the relief grinding of dies, punches &c. is connected to a drive shaft f by means of a universal joint d displaceable as by a screw e to effect pivotal movement of the support about two axes a, b. The support consists of an outer U-shaped member which can swivel on a pin b and an inner member which is pivoted to the outer member on pins a and contains a magnetic clamping plate c adjustable in height in dovetails n. A projection g of the support is connected by a spherical joint d to an eccentric head r which is adjustable by the screw e and driven through gearing s by a motor m.
Patent GB-636397-A (GB)
Title: Spray gun
IPC: B05B7/04
Filed: 1946-12-17
Abstract: 636,397. Spray-producers. AKTIEBOLAGET COLORATOR. Dec. 17, 1946, No. 37122. Convention date, Jan. 17. [Class 69 (iii)] A fan-shaped spray from a slot-like nozzle has pressure and suction air or gas jets acting thereon, tending respectively to compress and expand its cross-section in the direction of the slot major axis. In the embodiment a spray gun for paint and the like has diametrically opposed pairs of air or gas pressure jets 14 and 15. Jets 14 converge towards a point in front of the spray nozzle 34 having a slot-like opening, and jets 15 diverge outwardly, the former pro. ducing a pressure and the latter a suction on the liquid spray. A single rotatable valve body 16 with passages 18 and 19 regulate the supply of fluid through channels 10 and 11 to the jets 14 and 15 respectively. A further rotatable valve 22 in a channel 20 regulates the supply of pressure fluid to an annular space 25, the fluid passing through openings 26 and 27 to an atomizing chamber 9. A portion of this fluid passes in front of chamber 9 through channel 28 and opening 29. The spray liquid is fed to chamber 9 via channels 2 and 7, the latter channel being controlled by a valve 6. Specification 563,174 is referred to.
Patent GB-1219850-A (GB)
Title: Improvements in the preparation of aromatic compounds containing monoethylenically unsaturated radicals
IPC: C07C17/26
Filed: 1968-08-02
Abstract: 1,219,850. Styrene and stilbene derivatives. UBE INDUSTRIES Ltd. 2 Aug., 1968 [4 Aug., 1967], No. 37122/68. Heading 2C2. [Also in Division C5] A process for the preparation of aromatic compounds, containing monoethylenically unsaturated radicals, in which at least one of the ethylenically doubly bonded carbon atoms is joined directly to the aromatic nucleus, comprises reacting a monoethylenically unsaturated compound with an aromatic hydrocarbon or substituted aromatic hydrocarbon in the presence of a palladium salt, e.g. palladium acetate or a complex formed between a palladium salt and the monoethylenically unsaturated compound. The reaction is preferably performed in an aliphatic monocarboxylic acid C 1-5  as reaction medium and may be carried out from room temperature to 200 C. Compounds of the general Formula I, II, III are suitably prepared by this process wherein X and Y represent a hydrogen or a halogen atom, an alkyl C 1-4 , phenyl or phenyl substituted by alkyl radical and in addition Y represents a nitrile, alkoxy C 1-4 , alkoxycarbonyl C 2-4  or alkanoyloxy C 2-4  radical, Z represents a hydrogen or halogen atom, an alkyl C 1-12 , alkoxy C 1-12 , nitro, hydroxyl, mono- or dialkylamino, acylamino, carboxyl, nitrile or alkoxy carbonyl radical, n is 1 or 2 and m is 3-10. Examples describe the preparation of o-, m- and p-chlorostilbene, #-fluorostyrene, butyl-#- phenyl vinyl ether, o-, m- and p-methoxystyrene, α- and #-acetoxystyrene, trans-mnitrostilbene and α- and #-cyanostyrene. Specified compounds include #-chloro- and #-dichlorostyrene, methyl cinnamate, methyl α- methyl cinnamate, 1-(m-nitro phenyl)-2-p-tolyl ethylene, 1 - (p - dimethylamino phenyl) - 2- phenyl ethylene 1 - (p - dimethoxycarbonyl phenyl) - 2 - phenylethylene, and 1 - (phydroxyphenyl)-2-p-tolylethylene.
Patent GB-894910-A (GB)
Title: Fertilizers
Inventor: BARCLAY KEITH SCOTT
IPC: C05C1/00
Filed: 1958-11-19
Abstract: A process for the treatment of fertilizers comprising phosphates and optionally ammonium nitrate comprises incorporating urea or a salt of urea in an amount not greater than 0,75% based on the weight of the fertilizer.  Preferably the fertilizer contains 2-35% of P2O5 as superphosphate triple superphosphate, monocalcium phosphate, dicalcium phosphate, monoammonium phosphate or diammonium phosphate: 0,5 to 15% (as N) of ammonium nitrate; and 1-30% (as K2O) of potassium chloride: Ammonium sulphate may also be present. Specification 894,911 is referred to.
Patent GB-1274091-A (GB)
Title: A coupling for connecting a tube in various orientations to a valve body
IPC: F16K27/00
Filed: 1969-07-24
Abstract: 1,274,091. Tube connection. P. LUIGI, and G. DE'STEFANI, [trading as "SOC. ITALIANA TECHNOMECCANICA "LA PRECISA" DI DR. PIER LUIGI E SIG. GIANCARLO DE STEFANI"]. 24 July, 1969 [1 Aug., 1968], No. 37207/69. Heading F2G. A valve body 1 is formed with a platform 3 from which projects an annulus 4 coaxial with a port 2. A connector union comprises a plate 8 complementary to the platform 3 and contains an annular groove 9 in which a gasket 10 is located. The projection 4 serves to centre the plate 8 when making the connection and also serves to compress the gasket 10, thereby ensuring fluid tight sealing. The platform 3 and plate 8 are both square (Figs. 1, 3, 5, not shown) and are formed with holes at the corners, the holes in the platform being tapped to accommodate bolts. Thus the union may be held in any one of four positions while the tube connection 14 is radial with respect to the axis of port 2. A tube with a threaded end may be screwed into connection 14, or alternatively, if the tube is to be coextensive with port 2, or screw thread 6 in the port is used, a bevel 5 being provided for ease of location of the pipe end. The connection is suitable for gas or liquid connections.
Patent GB-1452416-A (GB)
Title: Camera shutter mechanism
IPC: G03B9/18
Filed: 1974-08-23
Abstract: 1452416 Camera shutters SEIKO KOKI KK 23 Aug 1974 37219/74 Heading G2A A shutter mechanism is (a) cocked by a lever 11 which engages pins 1b, 2b to rotate opening and closing levers 1, 2 into cocked positions (as shown) in which they are held by detents 5, 6; the cocking lever 11 being returned by a spring 19 (or spring plate 23), Fig. 4 (not shown). (b) released by a shutter release (not shown), which rotates detent 5 to allow a spring 13 to rotate lever 1 clockwise to open opening blades 21 whereupon pin 1b strikes portion 11a of cocking lever 11 and is prevented from rebounding by portion 11c. By preventing lever 1 from rebounding, rebound of blades 21 is prevented. As shown, after a photo-electrically timed period an electromagnet 16 is de-energized to release detent 6 to allow a spring 14 to rotate lever 2 clockwise to close closing blades (22), Fig. 1 (not shown).
Patent GB-999223-A (GB)
Title: Improvements in or relating to storage containers for transparency magazines
IPC: G03B21/54
Filed: 1963-09-23
Abstract: 999,223. Transparency magazine container. ERNST LEITZ G.m.b.H. Sept. 23, 1963 [Sept. 29, 1962; June 6, 1963], No. 37306/63. Heading B8P. A container for transparency magazines has a cover 10 (Fig. 1), connected to the front wall 11 and slidably engageable in grooves 9a, 9b in a lower part 1 having an abutment rail 4. The cover has a handle 16 and strengthening webs 14a, 14b. The side walls may be joined above the grooves 9a, 9b by an upper strengthening rail and the side walls and base have struts 7, 8a, 8b which coact to enable the containers to be stacked without sliding. Removal of the magazines is faciliated by a spring leaf inserted behind a central partition 6 (Fig. 8b), and pressed between the end wall 5 and the magazines 2a and 2b, or by a rocket arm 24 which may be loose or mounted on a helical spring 23. The rocker arm may be as shown, or have a central portion flat against the back wall with arms at either end contacting the magazines so that inward pressure on one magazine causes the other to be ejected. The cover 10 carries an inscription field 15 corresponding to the magazine compartments.
Patent GB-1084490-A (GB)
Title: Method and apparatus for treating rubber
Filed: 1966-08-19
Abstract: Crude natural rubber coagulum is ground into fine particles and washed in a high speed water vortex.  This washing step replaces a conventional crepeing battery.  An apparatus for carrying out the process comprises a hammer mill, a vortex pump, a decantation tank, and a screening device.
Patent GB-1008605-A (GB)
Title: Flexible coated abrasives
IPC: B24D11/00
Filed: 1963-09-23
Abstract: A flexible coated abrasive employs a backing fabric woven from hydrophilic fibres of cotton and hydrophobic fibres of isotactic polypropylene, linear or branched polyethylene, polyester, or high tenacity nylon, the proportion of hydrophobic fibre being such (e.g. 10-50%) that the fabric is not made brittle when a strength-imparting, normally embrittling, material is applied to the fabric before coating with abrasive grains.  The strength-imparting material may be glue, phenol formaldehyde, urea formaldehyde, melamine, polyester, epoxy or polyurethane resin; the fabric may be first saturated with a solution of the resin. The fabric may be heated near to the softening point of the hydrophobic fibres to bond the yarns together.  Specification 909,210, and U.S.A. Specifications 2,184,896, 2,291,873, 2,389,655 and 2,983,593 are referred to.ALSO:A fabric for coating with abrasive is woven from cotton fibres and hydrophobic fibres or isotactic polypropylene, linear or branched polyethylene, polyester, or high tenacity nylon, the proportion of hydrophobic fibre being uch (e.g. 10-50%) that the fabric is not made brittle by the application of glue or resin. The fabric may be heat treated, either relaxed or on a tenter, near the softening point of the hydrophobic fibres to bond the yarns together.  The warp or weft may be entirely cotton, or plied or blended yarns of cotton and hydrophobic fibre may be used as warp and/or weft.  The hydrophobic constituent may be monofil, multifil, or staple fibre. Specifications 909,210, USA 2,184,896, 2,291,873, 2,389,655 and 2,983,593 are referred to.
Patent GB-1172854-A (GB)
Title: Improvements in or relating to Electro-Precipitation
Inventor: DYLA JOHN FLORIAN
IPC: B03C3/04
Filed: 1966-04-12
Abstract: 1,172,854. Electrostatic precipitators. LODGE-COTTRELL Ltd. 29 March, 1967 [12 April, 1966; 20 Aug., 1966], Nos. 15893/66 and 37434/66. Heading B2J. An electro-precipitator electrode-supportstructure 45, Fig. 2, comprises first and second frameworks 46, 54 to support upper and lower end portions of electrodes of an electrode bank, e.g. 24, 26 Fig. 1, the bracing means of each structure 45 comprising four assemblies 51 securing and minimising relative movement between the framework. Each electrode support structure 45 comprises bracing means 49, Fig. 2 securing the framework 46 to the framework 54 to minimise relative torsional movement of frameworks 46, 54 transversely of the bracing means 49. The bracing means lie generally within the cross-sectional area bounding the electronic bank when the bank is in use. Earthed collector electrodes 28 in the banks 24, 26 cooperate with discharge electrodes are cleaned by napping, and are suspended from a beam 40, Fig. 2, which is resiliently mounted on girders 43. Weighted discharge electrodes 32 are suspended from the framework 46 of tubes 50, which are interconnected by girders 52 and braced by girders 53, Fig. 5. Shrouds 35 of the electrodes 32, Fig. 4, are located in holes 58. of girders 56 in the locating framework 54. Four bracing assemblies 51; Fig. 1, each comprise tubes 62, 64, Fig. 2, interconnected by a zig-zag circular bar of cross-bracing 66. In a first modification, each discharge electrode comprises a vertical support tube with cross members supporting twisted wires. The bracing means is provided by these support tubes, Fig. 9 (not shown). The electrode banks may be offset, Fig. 11 (not shown). In a third embodiment the electrodes are braced by tubes 462, Fig. 13, cross-braced at 466 by circular bars 467 whose ends are secured to spaced brackets 470, Fig. 16. A fourth embodiment includes bracing with a horizontal ring 584, Fig. 19, located between bars 568 and bolted to them. There may alternatively be crossbracing comprising zig-zag bars 667, Fig. 21, with straight portions 669 each welded to a tube 662 secured at the centres by a bolted bracket 676.
Patent GB-1506396-A (GB)
Title: Measurement of sliver thickness
IPC: D01H5/38
Filed: 1975-08-27
Abstract: 1506396 Measuring thickness of slivers JAMES MACKIE & SONS Ltd 27 Aug 1975 [27 Aug 1974] 37439/74 Heading G1M [Also in Division D1] The thickness of a sliver is measured by passing it between a pair of co-operating rollers, roller 1 being mounted for rotation in a fixed position and roller 2 being movable towards and away from roller 1 in accordance with the thickness of the sliver, roller 2 being loaded against fixed roller 1 by a pneumatic cylinder 18. Preferably roller 2 is mounted on arm 8 of a bell crank type lever and the loading force is applied via chain 21 to a second arm 12. A third arm 15 is connected through a link assembly 11 for positioning the pins on a memory wheel (not shown). The draft of the sliver is increased over the thicker regions and decreased over the thinner regions. A relieving pressure regulator 26 allows air in the cylinder to exhaust should an excessively thick piece of sliver pass between rollers 1, 2. The air supply to the cylinder is cut off by a solenoid valve (not shown) when the sliver is stationary to prevent its over-compression.