baber/WOPTO huggingface dataset:
Patent GB-847766-A (GB)
Title: Feed mechanism for grinding mill
IPC: B02C4/06
Filed: 1959-01-13
Abstract: 847,766. Roller mills. BUHLER GEB. Jan. 13, 1959 [Jan. 13, 1958], No. 1276/59. Class 59 Feed mechanism of a feed chamber 7 of a roller mill comprises a feed roller 6 and a movable wall 9 forming therebetween an adjustable feed gap 12, the wall 9 being pivotable about an axis 14 which is always located below the feed gap and adjustable counter balance means being provided for tilting the wall 9 inwardly towards the feed chamber in opposition to the outward pressure exerted directly on the wall 9 by the weight of material in the feed chamber. A baffle 15 is secured to the lower part of the wall, 9. The wall 9 is tilted inwardly towards the feed chamber by means comprising two arms 19, 20 pivoted at 22, the arm 19 carrying a roller 24 which presses against one of a pair of ribs 10 provided on the wall 9 and the arm 20 carrying on a screwthreaded portion 26 thereof a weight 27 the effect of which is transmitted to the arm 19 by means of an adjustable screw 29. The centre of gravity of the movable wall and parts secured thereto may be shifted to a position below the axis 14. In a modification. Fig. 3 (not shown), the baffle is pivoted to the movable wall, its position being determined by a screw and maintained by a spring. In a further modification. Fig. 4 (not shown) a weight is movably mounted on a screw-threaded bar secured to the movable wall.
Patent GB-543485-A (GB)
Title: Method of and means for reproducing a television picture with cathode ray tube and separate light source
IPC: H04N5/74
Filed: 1940-01-22
Abstract: 543,485. Optical projection systems. GES. ZUR FORDERUNG DER FORSCHUNG AUF DEM GEBIETE DER TECHNISCHEN PHYSIK AN DER EIDGENOSSISCHEN TECHNISCHEN HOCHSCHULE. Jan. 22, 1940, No. 1317. Convention date, Nov. 8, 1939. [Class 97 (i)] [Also in Group XL] A cathode-ray tube apparatus for reproducing a television picture comprises a modulating screen 5 adapted to be locally deformed by the cathode-ray into lenses or reflectors to modulate the light passing from a separate source 10 to a vision screen 18, the arrangement being such that when the modulating screen is not deformed, substantially no light reaches the vision screen, and the illumination of the vision screen depends on the extent of deformation of the modulating screen. In the apparatus, Fig. 1, light from the source 10 is directed by lenses 11, 12 reflector 14 and lens 4 to the modulating screen 5. Light reflected from the back of undeformed parts of the modulating screen is shut off by the reflector 14, but light affected by the deformed parts of the modulating screen passes the reflector 14 and is directed by lens system 17 to form the image on the vision screen 18. In a modification two modulating screens are provided in the cathode-ray tube and modulate the light from two separate sources, and a rotating shutter is provided to allow the two light beams to reach the vision screen alternately. In other modification the light passes only once through the modulating screen which is situated optically between the light source and the vision screen for example as in Fig. 5, in which the shutter controlling the passage of the light to the vision screen is in the form of a ring 28 with an aperture 27.
Patent GB-467680-A (GB)
Title: Coin delivery apparatus
IPC: G07F5/24
Filed: 1936-01-15
Abstract: 467,680. Electric control systems. WESTERN EQUIPMENT & SUPPLY CO. Jan. 15, 1936, No. 1328. Convention date, July 12, 1935. [Class 40 (i)] [Also in Group XVIII] Coins or similar articles are ejected one at a time from a stack 16 by a solenoidoperated slide 28 which is reciprocated a number of times determined by the particular key in a bank 20 which is depressed. Each key has a shank 158 with a cam portion 162 adapted to engage behind a slot in a spring-retracted slidable locking plate 166 so that, when depressed, it is held against the action of a return spring 160 to maintain a pair of contacts 178 closed. One of each pair of contacts 178 is connected to one of an arcuate series of fixed contacts 146 engaged by a rotary contact segment 148 operated step-wise by the reciprocations of the ejector slide 28. For this purpose, the contact segment 148 is mounted on a shaft 106 to which is secured a ratchet wheel 104 engaged by a spring-actuated pawl 100 pivoted to the slide 28, a further pawl 130 pivoted to the base plate of the apparatus normally preventing reverse rotation of the ratchet wheel and contact segment. The key-operated contacts 178, and the contacts 146, 148 are arranged in circuit with the solenoid 46 in the manner shown in Fig. 12, there being also included in the circuit a snap-over switch 84 operated by the slide 28 to secure its reciprocating action. In operation, upon depression of a key 20, the circuit of the solenoid 46 is completed through the corresponding contacts 178, 146 and the segment 148. As the slide 28 is reciprocated and coins successively ejected, the ratchet wheel 104 is rotated step-wise by the pawl 100 and with it the contact segment 148. When the slide 28 has completed a number of reciprocations equal to the numerical indication on the depressed key, the contact segment 148 passes out of engagement with the contact 146 connected with that key, so that the circuit of the solenoid is interrupted, and delivery of coins ceases. The ratchet wheel 104 and the contact segment 148 are returned to their zero position, with a pin 122 on the ratchet wheel in engagement with a fixed stop 124, by a torsion spring 118 wound about the shaft 106, when the pawl 130 is disengaged from the ratchet wheel by movement of a sliding bar 140. This bar 140 is connected with the key locking plate 166 by a bell-crank 180, so that when another key is subsequently depressed, the plate 166 is momentarily displaced which disengages the pawl 130 to allow the ratchet wheel 104 and contact segment to be zeroized by the spring 118, and releases the key previously depressed. Alternatively, the mechanism may be zeroized by depression of a " clearing " key 190, which is constructed similarly to the keys 20 but has no contacts 178. When the keyboard is remote from the main mechanism, this " clearing " key 190 operates the pawl 130 electrically.
Patent GB-210075-A (GB)
Title: Improvements in and relating to traps for catching rats, mice and other similar animals
IPC: A01M23/30
Filed: 1923-06-04
Abstract: 210,075. McGrath, M. B. Sept. 4, 1922, [Convention date]. Animal traps.-A break-back trap having the usual base 1, break-back frame 3, spring 4 and catch rod 7 is provided with a baitholder comprising a tapered plate 12 pivoted on a staple 16 and having inturned edges 14 between which the bait is wedged. This baitholder has an upward portion 17 formed with bearings 10 for a loose spindle 11 under which the lip 13 of the rod 7 engages in the set position of the trap. The Specification as open to inspection under Sect. 91 (3) (a) comprises also offset ends 15 on the spindle 11. This subject-matter does not appear in the Specification as accepted.
Patent GB-344139-A (GB)
Title: Improvements in flexible couplings for rotary shafts
IPC: F16D3/56
Filed: 1930-01-15
Abstract: 344,139. Universal shaft couplings. CROFT, F. and CROFT, A., of Crofts (Engineers), Ltd., Thornbury, Bradford, Yorkshire. Jan. 15, 1930, No. 1391. [Class 80 (ii).] In a resilient coupling, the coupling members 2, 2a are joined by separate flat bifurcated springs a, Fig. 2, or b, Fig. 7, which are inserted radially into slots formed by radiating projections 6, 6a in the coupling members. The resilient action may be modified by varying the number of springs. The slots in each member may be flared as at w, or one series may be flared and the other straight. Each spring member a spans two arms ss<1> of the two adjoining springs, and the modified link spring b, which has a saw-cut 7 to increase its flexibility, spans a single projection 6, 6a on each coupling member. Annular retaining members 4, 4a bolted together are preferably used for both forms of spring whereby endwise spring movement is prevented, although in the case of the link spring b it is only necessary to encircle the outer periphery of the coupling members.
Patent GB-703809-A (GB)
Title: Improvements relating to moving coil loudspeakers and other forms of transducer
Inventor: FOUNTAIN GUY RUPERT
IPC: H04R9/02
Filed: 1952-01-17
Abstract: 703,809. Magnetic telephone instruments; moving coil loudspeakers. TANNOY, Ltd. Dec. 16, 1952 [Jan. 17, 1952], No. 1394/52. Class 40 (4) A slug 1 of magnet steel is held in place within a pot or similar enclosing structure 2 by means of a hollow tube 9 which passes through the centre of the slug 1 and is secured at one end to the enclosing structure 2 and at the other end to a central pole piece 6. An annular outer pole piece 5 is spaced from the inner pole piece 6 by a ring 17 of non-magnetic material and is fastened to the enclosing structure 2 by bolts 15. As shown, a magnetic system as described above is incorporated in a pressure-type moving coil loudspeaker as described in Specification 703,810 and the tube 9 may be partially or totally obstructed so as to vary the acoustic properties of the cavity behind the diaphragm 20.
Patent GB-1398341-A (GB)
Title: Primer compositions
IPC: C09J123/00
Filed: 1973-01-10
Abstract: 1398341 Laminates DOW CORNING CORP 10 Jan 1973 [10 Jan 1972] 1432/73 Heading B5N [Also in Divisions C3 and C4] Unvulcanized elastomers may be bonded to substrates such as metals, glass, ceramics, wood and plastics using primer compositions comprising (a) 80 to 99À99 weight per cent of a tackifier resin of molecular weight not exceeding 12,000 and selected from rosins and modified rosins, esters of rosins and modified rosins, polyterpenes, coumarone/indene resins, polycyclopentadienes, aliphatic hydrocarbon resins, polystyrenes, copolymers of styrene with ethylenically unsaturated aromatic monomers, phenolic resins, modified phenolic resins and chlorinated terphenyl or diphenyl resins containing 42 to 65 weight per cent of chlorine, and (b) 0À01 to 20 weight per cent of X 3 SiQNHR<SP>1</SP> or partial consates or hydrochloride salts thereof in which X is an hydroxyl group or hydrolysable radical; Q is a divalent hydrocarbon radical or substitution product thereof containing where R is hydrogen, C 1-6  alkyl or phenyl; and R<SP>1</SP> is a C 1-18  monovalent hydrocarbon radical or substitution products thereof containing C-O-C or C=O The primers may be applied to the substrates from organic solvent solutions, e.g. in xylene, and should be such that the coating is only partially compatible with the elastomer to be bonded. Many suitable primary components and elastomers are specified and examples describe the bonding of primed glass slides to (1 and 2) styrene/butadiene/styrene block copolymer, (3) styrene/butadiene/styrene block copolymer, styrene/butadiene rubber, butyl rubber, polyisoprene rubber and ethylene/propylene terpolymer rubber, and (5) polyisoprene, polychloroprene, styrene/butadiene, chlorinated butyl rubber, styrene / isoprene / styrene block copolymer, chlorosulphonated polyethylene, acrylic, epichlorohydrin homopolymer, epichlorohydrin/ ethylene oxide copolymer and hexafluoropropylene/vinylidene fluoride copolymer rubbers; and primed glass, ceramic tile, aluminium, magnesium, titanium, brass, tin-coated steel, stainless steel, cold-rolled steel, marble, red cedar and epoxy resin coated aluminium to (4) styrene/ butadiene/styrene block copolymers; using primers containing α-pinene polymer, polycyclopentadiene, terpene copolymer, terpene-modified phenolic resin, vinyl toluene/α-methylstyrene copolymer, coal tar derived polymer, hydrogenated rosin, glycerol ester of hydrogenated rosin, coumarone/indene resin, chlorinated polyolefin, methyl abietate, reactive phenolic resin and hydrogenated methyl ester of rosin, together with various amino trialkoxy and other silanes.
Patent GB-544600-A (GB)
Title: Improvements in or relating to light valves
IPC: G11B7/00
Filed: 1941-02-05
Abstract: 544,600. Light valves. ELECTRICAL RESEARCH PRODUCTS, Inc. Feb. 5, 1941, No. 1539. Convention date, Feb. 14, 1940. [Class 40 -(iii)] A light valve comprises a pair of axially apertured pole-pieces 2, 3 Fig. 1, with adjoining pole faces and surrounded by a permanent cylindrical magnet 1 the ends of which abut flanges 4, 5 on the pole pieces. The light-modulating currentcarrying ribbons 14, 15, Fig. 3, extending between the pole faces have their ends clamped by blocks 24 to blocks 21 fastened to blocks 16 themselves fastened to an annular member 11 secured by four screws 12 to the pole piece 3. The screws 12 are hollow to receive leads 13 connecting the ribbons to terminals 33. The various blocks permit the position and tension of the ribbons to be adjusted. Spacers and lateral guards are also provided for the ribbons. To avoid interference by stray light, a strip 40 with a small aperture 44 is placed on one side of the ribbons, a similar strip is placed on the other side, and a lens tube. 50 is aligned by a shim 53 in the pole piece 3, within which it is held against a flat annular spring 52 by a spring ring 49. The outer end of the aperture in the other pole piece 2 is closed by a transparent plate 60 secured by a spring ring 61. Thus dust is excluded from the working parts.
Patent GB-1206853-A (GB)
Title: Improvements in or relating to motor driven hammers
IPC: B25D11/12
Filed: 1968-01-11
Abstract: 1,206,853. Percussive tools. ROBERT BOSCH G.m.b.H. 11 Jan., 1968 [13 Jan., 1967], No. 1573/68. Heading B4C. [Also in Divisions B3 and F2] An electric motor-driven percussive tool comprises an axially-displaceable cylinder 39 in which is mounted a slidable striker 46, the cylinder being reciprocated by means of a crank 49 so that the striker is moved via air cushions on one or each side of a piston 47 connected to the striker. The crank is formed by a pin 49 secured to a gear 20 which is rotated by a pinion 18 on the motor shaft, the crank-pin being provided with a needle bearing movable in a guide track 48a in the cylinder. The cylinder is formed with lugs (40, Fig. 2) arranged to slide in guideways (37, 38) secured to the motor housing 19 and with openings 43, 44 for admitting air to the air cushion chambers. The striker is arranged to impact an anvil-cum-tool holder 57 which is provided with splines 59 slidable in teeth 52 formed in a gear 51. The gear 51 is rotated by means of gears 23, 24 and 54, the gears 24, 54 being connected via an overload slip coupling device 25, 32, 33, 28, 29 (see Division F2). A pair of handles 64, 66 are provided and air is drawn through the tool for cooling by means of a fan 8a.
Patent GB-598361-A (GB)
Title: Improvements relating to laminated sheet materials
IPC: B29C70/00
Filed: 1945-01-19
Abstract: 598,361. Compound sheet materials. SARGENT, E. H. G. Jan. 19, 1945, No. 1585. [Class 140] In making compound sheet materials by hot-pressing superposed layers of cellulosic fibrous material impregnated or coated with a thermosetting synthetic resin such as phenol- or cresol-formaldehyde, the fibrous layers are made waterproof, before treatment with the resin, with the aid of a quaternary ammonium compound, sulphonium compound, or phosphonium compound.
Patent GB-845438-A (GB)
Title: An electrical arrangement for determining output values as predetermined functions of electrically-fed input values
Filed: 1957-01-16
Abstract: 845,438. Digital electric calculating-apparatus. SPINGIES, E., and ROSE, H. Jan. 16, 1957 [Jan. 21, 1956], No. 1610/57. Class 106 (1). An electrical arrangement for determining output values as predetermined functions of electrically-fed input values, such as article stock numbers or wage amounts, is characterized in that, after reception of the input value, switching means feed a voltage to associated switching points via diodes, and the output section comprises a step-by-step selector for each denomination of the output values which appear as impulses or control voltages. Fig. 1 illustrates a system for determining the taxes and insurance contributions to be paid on a given wage. A five-digit number (e.g. $357.20) representing the wage is entered, e.g. from the keyboard of a typewriter or calculating-machine, as electric pulses on input 113 and set up on step-by-step selectors 112 or other devices, e.g. counter tubes. According to the values of the lowest four digits one of the lines 105 and a corresponding selector 103 is selected. According to the value of the fifth digit (hundred dollars) selector 103 marks one of the lines 106 and a corresponding switching-point 108. Each point 108 is connected through rectifiers 107 to predetermined contacts 109, Fig. 2, of selector switches 111 in output circuit 104, whereby a five-digit number representing the required tax or contribution is determined and read out as impulses over a line 114, e.g. to a calculating- machine, as described in Specification 840,694. A number of constant items (taxes and contributions) related to a given wage may be read out sequentially under control of a further selector 132 (Fig. 6, not shown). In a detailed circuit diagram of the arrangement (Figs. 2 to 10, not shown) sequential control is effected by electromagnetic relay circuits, and two-dimensional arrays of further relays (one array for cents and the other for units and tens of dollars) are employed for selecting one of twenty-six lines 105 according to the range of values within which the entered wage lies.
Patent GB-937384-A (GB)
Title: Improvements in or relating to key cutting apparatus
IPC: B23C3/35
Filed: 1961-01-16
Abstract: 937,384. Copy-milling. E. MINGANTI. Jan. 16, 1961 [Feb. 4, 1960], No. 1670/61. Class 83 (3). Means for cutting notches in keys comprises a cutter 9 and drive means 5 on a base-plate 4 reciprocated to cause the cutter to rise and fall according to the shape of a template, the key and template being clamped by the operation of a single lever. The motor 5 and the base-plate 4 are carried on a carriage 3 by pivots 6. The motor drives, at one end, the cutter and, at the other, worm gearing to rotate a shaft 11 carrying cranks 13. The cranks are connected by links 15 to a base 1 so that, as the cranks rotate, the motor carriage 3 is reciprocated along rods 2. Movement of a follower 55 carried on a yoke 19 pivoted at 24 to the carriage 3 causes rocking movement of the base-plate 4 through links 20. The follower is adjustable vertically by a screw 60 to adjust the depth of cut. In operation, the cutter is moved axially along the key when a push-button is pressed and after a single stroke to left or right a cam 25 on the shaft 11 actuates a switch to stop the motor. To allow access to the key, the cutter is swung up away from the key, so that its axis lies on a line B-B, by a toggle 31, 30 straightened by an adjustable abutment 35 as the base-plate 4 completes a movement to the left. The key blank is held between jaws 37, 38, Fig. 7, engaging the grooves in the blank and the template is held between jaws 39, 40. Rotation of a handle 46 withdraws the jaws 37, 39 against the force of springs 42, 43. If the handle 46 is moved only by a small amount, a lever 48 connected to the lower jaw is not moved and the template remains clamped. Displaceable abutments 50, 51 above the key engage a shoulder on the blank to ensure correct positioning.
Patent GB-716373-A (GB)
Title: Improvements in or relating to particle accelerators
Inventor: WALKINSHAW WILLIAM
IPC: H05H9/00
Filed: 1951-01-24
Abstract: 716,373. Particle accelerators. LORD PRESIDENT OF THE COUNCIL. March 25, 1952 [Jan. 24, 1951], No. 1797/51. Drawings to Specification. Class 39(1) A linear charged particle accelerator comprises a loaded wave guiding structure, and an inner electrode for supporting a radial static electric field, and the particles are injected in a direction having a component of motion tangential to the axis of the system so that a balance of the radial forces on the particles due on the one hand to their tangential component of velocity and the defocusing field, and on the other hand, to the static field may be achieved. The particles are then confined to a helical path around the inner electrode within the wave guiding structure. The inner electrode is negative with respect to the structure in the case of proton acceleration, but positive for electrons. Specification 656,801 is referred to.
Patent GB-866539-A (GB)
Title: Improvements in or relating to spring centres for upholstery
IPC: A47C27/07
Filed: 1958-01-18
Abstract: 866,539. Spring upholstery. BLYTH, C. A. Jan. 16, 1959 [Jan. 18, 1958], No. 1798/58. Class 52(4). The strip metal support member 10 for upholstery springs has a number of shallow domeshaped portions 11 formed from the metal of the strip and the smallest turn of a tapered coilspring 12 has a loop 13 which is clinched between the head of a rivet 14 and the portion 11, the shank of the rivet being held in an opening 15 in the centre of said portion 11.
Patent GB-246834-A (GB)
Title: Improvements in the production of phenol-aldehyde resins
IPC: C08G8/28
Filed: 1926-01-22
Abstract: 246,834. Bakelite Ges. Jan. 27, 1925, [Convention date]. Phenol-aldehyde condensation products or resins are purified by treating them with alkali in aqueous solution and precipitating them from the mixture by addition cf salts, the amount of alkali solution being such that the products are precipitated in gel-like form. Suitable salts for the precipitation are sodium, ammonium, or magnesium chloride, alkali carbonates, magnesium or aluminium sulphate, or the alums. Hydrotropic salts, e.g. sodium salicylate, and the alkali salts or soaps of higher fatty acids, sulphonated fatty acids, resin acids, oxy-fatty acids, or halogenated fatty acids may be added to the mixture prior to the precipitation. The hydrotropic salts may be selected so as to form soluble or insoluble compounds with the precipitating salts. The resins are obtained, after washing and drying, as bright, inodorous, lightresisting powders, with melting points considerably higher than those of the original resins. In examples (1) a solution of phenol-formaldehyde resin in caustic soda or potash solution is precipitated by solid sodium chloride, and (2) a caustic soda or potash solution of phenol-formaldehyde or phenol-acetaklehyde resin is precipitated by a solution of alum or aluminium sulphate. The Specification as open to inspection under Sect. 91 (3) (a) states that the condensation products are purified by precipitating, by addition of salts, the colloidal suspensions of the products which are obtained by mixing the products with not more than an equal weight of water and agitating the mixture, while adding small quantities of a caustic alkali. Examples of this process are given also, in one of which the precipi. tating salt is calcium chloride. This subjectmatter does not appear in the Specification as accepted.
Patent GB-277539-A (GB)
Title: Tool for fitting-on motor car tyres
IPC: B60C25/02
Filed: 1927-01-24
Abstract: 277,539. Stoffleth, G. Jan. 24, 1927. Tyre covers, tools for removing and replacing. -The tool comprises a lever a and two pivoted arms b, c, the arm b carrying a pivoted hook g to engage the rim-flange, the end of the arm c being shaped to press against the side of the tyre to force the bead from tht rim flange h. The other end of the lever is formed with a notch o to engage the rim in assembling the tyre, and with a slot n to receive a short lever k having a wedge-shaped end m for use in detaching the tyre.