baber/WOPTO huggingface dataset:
Patent GB-1026596-A (GB)
Title: Improvements relating to optical masers
Inventor: DYSON JAMES
IPC: H01S3/06
Filed: 1962-04-06
Abstract: 1,026,596. Optical masers. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. April 3, 1963 [April 6, 1962], No. 13393/62. Heading H3B. The crystal block of an optical maser includes a thin layer of transparent material having a refractive index differing from that of the crystal extending within the block in a plane inclined to the major axis of the block. In one embodiment, Fig. 3, a crystal block 7, e.g. ruby formed with a pair of flat surfaces 8, 9 inclined at an angle of 45 degrees to the major axis of the block and arranged to internally reflect light in a direction parallel to the major axis, is cut in a plane extending at approximately 45 degrees to the major axis and one of the exposed surfaces is coated with a thin layer of transparent material, e.g. silica having a refractive index differing from that of the block. The block is then re-assembled so that layer 11 extends within the block so that there are produced two emergent beams 12, 13. If a reflecting surface 14 is provided beam 13 is reflected so that it emerges in the same direction as beam 12 as shown by 13<SP>1</SP>. The transparent layer 11 may be a multiple reflecting film. In the embodiment of Fig. 4 the portion 15 of the crystal has a rectangular cross-section so that the two emergent beams coincide with one beam, being internally reflected twice in the portion 15. Fig. 5 (not shown), is a modification of the embodiment of Fig. 4, in which the flat surface 8 of a very short block 7 extends as far as the transparent layer 11. The pumping light may be applied to the crystal by a flash tube wrapped round the crystal, Fig. 6 (not shown), or two flash tubes 22, 23 may be used, Fig. 7. Tubes 22, 23 may extend in a zig-zag configuration over the surface of the crystal.
Patent GB-572789-A (GB)
Title: An improved method of joining or welding metals
IPC: B23K20/12
Filed: 1941-10-17
Abstract: 572,789. Welding ; riveting; uniting by fusion. KLOPSTOCK, H., and NEELANDS, A. R. Oct. 17, 1941, No. 13396. [Class 83 (iv)] In joining steel or hard alloys, iron, aluminium, brass, or other metals, the necessary heat is generated by friction, assisted, if desired, by heat from combustion of gas or flow of electricity. A bar C may be rotated in contact with two parts A, A<1> so that it melts and is deposited to join the parts. The rod is fed axially, the pressure being varied according to the heat required, and this or the work is fed laterally as the metal is deposited. The rod may have an increased manganese and silicon content, to make up for loss thereof, and is preferably chamfered. The rod may be coated with or carry in a groove deoxidizing flux, which may comprise powdered copper, iron, ferric oxide, manganese dioxide, potassium or sodium permanganate, potassium chloride, sodium borate, sodium sulphate, potassium fluoride, &c. Pipes D, E, Fig. 2, may be joined by chamfering to different angles, preferably between 20-30 degrees, and rotating relatively while pressing together, with or without a flux. Similarly, plates F, G, Fig. 3, may be joined by forcing a rotating rivet H, having a shank which is slightly tapered and may be copper-coated, grooved or threaded externally, and slotted, into a more steeply tapered hole.
Patent GB-295747-A (GB)
Title: Improvements in or relating to cigarette making machines
IPC: A24C5/39
Filed: 1927-05-19
Abstract: 295,747. Ruau, F. F., and Molins Machine Co., Ltd. May 19, 1927. Cigarette-making machines.-In a machine of the continuous-rod type, the picker roller 11 is arranged to continue its rotation after the remainder of the machine has stopped. Its spindle 20 has a free-wheel connection with the driving sprocket 18. If the roller itself is not of sufficient mass to provide the necessary momentum, a fly wheel 19 is mounted on the spindle. Specification 249,575 is referred to.
Patent GB-134748-A (GB)
IPC: B60B25/14
Abstract: 134,748. Milne, J. March 28, 1919. Tyre attachments to rims.-In divisible rims of the type in which the rim parts are held together by the engagement therewith of prongs on the underside of the security bolts, the rim parts B, C are both detachable and are provided with openings B<3>, C<3> for the said prongs and also with slots B<4>, C<4> to engage the sides of a locating piece F secured to the felloe band. To protect the underside of the air tube, a band G of rustless material may be attached to or spaced from the felloe band A<2> and fitted between the beads of the outer cover. In a modification, Fig. 6, which may be used as a detachable wheel, the security bolt is provided with a detachable stem, and one side of the felloe A<2> is provided with a ledge A<5>, Fig. 8, the rim part 13 being also provided with a ledge B' so as to permit the fitting of the rim in fitting. The locating piece F fits in a notch B<8> in the ledge B<7>. To facilitate fitting either type of rim, a cramp J, Fig. 10, of scissorsshape is provided, having a hinged spindle J<2> with a screwed end which is engaged by a nut J<3> integral with a handle J' and housed in the jaw J<5>. Recesses J<6> engage the rim beads, and bring the rim parts into position for the fitting of the security bolts. To assist in putting the rim parts on the felloe, smaller recesses J' are provided to engage the edge of the felloe band A<2>, apertures B<5>, C<5> being provided in the rim parts B, C for the ends of the arms of the cramp. To hold the security bolts in a raised position during fitting, a spring band is secured around the rim and tyre and is provided with a ring fitting on the outside end of the security bolt.
Patent GB-726466-A (GB)
Title: Improvements in or relating to freeze resistant aqueous polymer-containing paint
IPC: C09D5/02
Filed: 1953-05-14
Abstract: An aqueous synthetic polymer-containing paint contains a polyalkylene polyamine.  The synthetic polymer may be prepared from butadiene, isoprene, 2,3-dimethyl butadiene, piperylene, 2-chlorobutadiene, 2,3-dichlorobutadiene, 2-bromobutadiene, 2-fluorobutadiene, 2,3-difluorobutadiene, styrene, vinyl toluene, divinyl benzene, the chlorostyrenes, the alkyl styrenes, alpha - chlorostyrene, alpha - methylstyrene, vinyl naphthalene, vinyl pyridine, vinyl carbazole, acrylic acid, acrylamide, methyl acrylate, methyl methacrylate, methacrylic acid, methacrylamide, acrolein, acrylonitrile, methacrylonitrile, vinyl chloride, bromide, fluoride, acetate, formate, propionate, vinyl methyl or ethyl ether, divinyl methyl ketone, vinyl ethyl or isobutyl ketone, divinyl ketone, vinyl ethyl sulphone, the vinyl thioethers, vinylidene fluoride, or cyanide, 1 - chloro - 1 - fluoroethene, chloro - trifluoroethylene isobutene, ethylene and propylene.  Copolymers of a minor proportion of a conjugated diene and a major proportion of a monoethylenically unsaturated compound (in an example styrene) are preferred. Specified polyamines are diethylene triamine, triethylene tetramine, tetraethylene pentamine, pentaethylene hexamine, nonaethylene decamine, dipropylene triamine and tripropylene tetramine. Specified paint pigments are titanium dioxide, clay, silica, lithopone, mica, barium sulphate, talc, zinc sulphite, carbon black, iron oxides, cadmium yellows, phthalocyanines, ultramarine, chromium oxides, umber and sienna, while pigment dispersing agents which may be present are water-soluble soaps, the aliphatic or aromatic sulphonates, the sulpholignins, the aliphatic sulphates, soluble phosphates, polyethers, ether-alcohol condensates, casein, soya-bean protein, albumens and cellulose ethers.  An anti-foaming agent such as pine oil, or tributyl phosphate, may be present.
Patent GB-1177654-A (GB)
Title: Improvements in Food Compositions.
Inventor: MUYS GERARD TUYNENBURG
IPC: A23L27/60
Filed: 1966-03-28
Abstract: 1,177,654. Food compositions; preserving. UNILEVER Ltd. 23 March, 1967 [23 March, 1966], No. 13602/66. Headings A2B and A2D. A process for rendering food compositions comprising water and sugar with fat and/or acetic acid, more resistant to attack by micro-organisms comprises incorporating therein 5-30 per cent of glycerol by weight of the aqueous phase of the composition. The term "sugar" means mono-and di-saccharides, and sugar alcohols such as sorbitol, mannitol and hexitol. The Examples disclose (Exs. 1 and 2) a sweet spread comprising vegetable oils and fats, cocoa powder, sucrose, glycerol, salt and water; (Exs. 3 and 4) a sweet spread comprising vegetable oils and fats, sucrose, glycerol and lemon juice; (Ex. 5) an apple paste comprising angle pulp, cocoa powder, sucrose, skim milk powder, pectin and glycerol; (Ex. 6) a chocolate milk concentrate comprising sugar, skim milk powder, glucose, cocoa powder, glycerol and water; (Ex. 7) a mayonnaise comprising corn oil, egg yolk, spices, salt, acetic acid, glycerol, sucrose and water; (Ex. 8) a salad sauce comprising corn oil, salt, tragacanth or alginate, acetic acid, sucrose, glycerol, egg yolk and water; (Exs. 9 and 10) a meat spread comprising salt, monosodium glutamate, sucrose, glycerol, yeast extract, fat, meat and water and optionally oxtail soup powder, curry powder and onion powder; (Ex. 11) a fish spread comprising herring, cabbage, gherkins, onions, sucrose, acetic arid, salt, glycerol and water; (Ex. 12) a tomato ketchup comprising tomato pure, sucrose, salt, vinegar, wheat starch, glycerol and water; and (Exs. 13 and 14) a dairy or vegetable ice cream concentrate comprising butter or vegetable oil (coconut oil), mono - and di-glycerides, non-fat milk solids, sucrose, glycerol, locust bean gum and water.
Patent GB-201295-A (GB)
Title: Improvements in four seater coupe and all weather bodies of motor vehicles
IPC: B60J1/17
Filed: 1922-05-15
Abstract: 201,295. Windover, W. L. S. May 15, 1922. Windscreens. - CoupÚ and all weather bodies of motor vehicles are constructed with a frame carrying a window 2 with angled or curved side portions 3 positioned in a correspondingly shaped recess just behind the driver's seat, the pillars supporting the hood and next the door are provided with guides in which the side edges of the side portions can run, and the frame is constructed and arranged so that it can be lowered into the recess without having to fold back the side portions. The side portions run in grooves 7 in the side of the body or in door uprights 9 hinged so as to be folded down inside the car. The main pillars comprise two parts 10, 11 having grooves in which the window sash slides; these pillars may be folded down over the recess. The frame with windows may be operated by hand by means of a sprocket chain having a pin 19 taking into a slot 20 in a bracket 21 attached to the frame.
Patent GB-402342-A (GB)
Title: Improved means for detachably securing handles to the casings of machines
IPC: A47L9/32
Filed: 1933-05-10
Abstract: 402,342. Vacuum-cleaner handle fixings. FRAME, W. J., 99, Deodar Road, Putney, and VACUUM CLEANER & ENGINEERING CO., Ltd., Parsons Green Lane, Fulham, both in London. May 10, 1933, No. 13641. [Class 61 (i).] A vacuum-cleaner &c. handle l is provided with a threaded socket m adapted to be detachably engaged with a threaded socket d rigidly connected as by welding to an inturned flange e of the casing a and to an annular bending k on the plate g. In a modification the handle socket extends beyond the handle end and the extension is threaded internally to screw over the socket on the machine.
Patent GB-592569-A (GB)
Title: Improvements in or relating to apparatus for generating or controlling high frequency electromagnetic waves
IPC: H01J25/10
Filed: 1943-08-20
Abstract: 592,569. Velocity - modulated tubes. WESTERN ELECTRIC CO., Inc. Aug. 20, 1943, No. 13641. Convention date, March 11, 1941. [Class 39 (i)] A high-frequency electron discharge apparatus comprises a cathode 5 from which an electron stream flows to anode 6 through a high-frequency input field enclosed in cavity resonator 1 and through an output field in resonator 2. These two fields are screened from each other by grids 9 and 11 and the electron transit time through the high-frequency input field lies between the period of a whole number of cycles and this period plus one-half a cycle. The flow of electrons is maintained so slow that they become density modulated in the input field. The screening permits the input portion to be treated as a diode and as set out in Specification 516,750, this can operate under space charge control at high-frequencies when the transit time is suitably chosen as above. The transit time through the output field is preferably less than the period of one cycle thereof. In a modification, the resonators 1 and 2 are provided with a common barrier wall and a grid of substantial depth replaces grids 9 and 11, this single grid exerting sufficient screening for some cases. In another case, however, an additional screening grid may be provided between grids 9 and 11. The input and output fields may each be confined within two grids in the electron stream and either the cathode or anode or both thus maintained outside the fields. Specifications 518,015, 523,712 and 541,477 also are referred to.
Patent GB-184756-A (GB)
Title: Improved apparatus for ascertaining the relative capacities of pumps
IPC: F04C28/00
Filed: 1921-04-07
Abstract: 184,756. Igranic Electric Co., Ltd., (Cutler-Hammer Manufacturing Co.). April 7, 1921. Regulating screw pumps and centrifugal pumps; indicating action of pumps.- The relative capacity of two pumps is ascertained by driving the pumps at constantly proportioned rates and automatically comparing the quantities of substance handled by the pumps respectively. In the apparatus shown on the drawing, which shows the gas calorimeter described in Specification 153,817, [Class 97 (iii), Thermometers &c.], the gas pump 2 and the cooling-air pump 4 are of the wet displacement meter type and are driven during the test of their capacity by gears from the motor 6 so chosen, in relation to their designed capacities that each pump handles the same amount of air and cocks 40, 43 are arranged so that air is pumped by the pump 4 into the gas holder 42 and is pumped out of the gas holder by the pump 2. If then the two pumps are of correct relative capacity no change in the volume in the gas holder occurs but, if any corrosion has occurred, the bell 42 moves up or down and the error can be estimated by the movement of the bell during a known operation of the pumps. Means such as adjustable screws are provided to vary the extent of immersion of the pump 2 below the water level in the tank 5 so as to make its delivery equal to that of the pump 4. The water level is maintained by means of a closed auxiliary tank 48 forming the support for the pumps from which water is raised by a chain pump 51 to the main tank and into which any excess water flows by way of the pipe 49. A gauge 56 shows the water level in the tank 48.
Patent GB-769162-A (GB)
Title: Magnetic pole structure
IPC: F16D27/112
Filed: 1955-05-12
Abstract: 769,162. Electromagnetic brakes. WARNER ELECTRIC BRAKE & CLUTCH CO. May 12, 1955 [Jan. 21, 1955], No. 13755/55. Class 103 (1). [Also in Groups XXIV and XXXV] In an electromagnetically actuated friction clutch or brake, the winding is mounted on an annular stationary core 12 located between but spaced from two concentric rotating rings 13, 14 of magnetic material which are rigidly connected together by channel shaped spacers 17 of high reluctance material. When the coil 11 is energized the rings 13, 14 attract an armature 19 toward surfaces 20 to effect the desired clutching or braking action. To avoid slip between the rings and the armature, a material 21 having high co-efficient of friction is inserted in an annular recess 22 between axial extensions of the rings. The two rings 13, 14 are made by cutting away metal from an annular shell 26 by first forming an annular groove 30 into which the connecting spacers 17 are inserted and welded at their flanges 34 to the bevelled edges 32 of the groove 30. Then the remaining metal of the shell 26 near the groove 30 is removed so as to leave two rings 13a, 14a joined solely by the spacers 17 as in Fig. 5. When the spacers are required to have greater rigidity, they may be increased in circumferential length or formed into one complete annulus. In such a modified form, the shell 261 is formed of a ring of J-shaped section as in Fig. 9, which also shows the spacer 17<SP>1</SP> prior to its insertion into the groove 38. The spacer mechanical stability may be increased by filling the spacer with a compound 40 which will set after moulding. In both embodiments employing spacers 17 or 17<SP>1</SP>, the two concentric magnetic rings 13, 14 can expand or contract with temperature variation without subjecting the welds between them and the spacers to a shearing stress.
Patent GB-1153398-A (GB)
Title: Optical Filter.
Inventor: CROSSWHITE HENRY M JUNIOR
IPC: G02B5/26
Filed: 1967-03-23
Abstract: 1,153,398. Optical apparatus. H. M. CROSSWHITE. March 23, 1967 [May 5, 1966], No. 13778/67. Heading G2J. In an optical filter arrangement providing a selective cut-off wavelength, light entering a window 28 and apssing approximately normally through the entry face of a first rhomb 30 encounters an inclined face thereof through which light having a wavelength longer than a critical value passes out of the system whereas light of shorter wavelength undergoes successive reflections, passes into a second rhomb 30, undergoes further reflections and finally emerges through the outlet window 28, and rhombs 30 being so pivoted that their inclination, and thus their cut-off wavelength, is variable. Baffles 40, 42 prevent stray light from passing through the outlet window 28. To pivot the rhombs 30, a knob (38), Fig. 2 (not shown) is rotated which, through a shaft (24), rotates a cam (34) contacting a cam follower (32) on a shaft 22. Thus gear sector 20 is rotated and also a second gear sector meshing therewith, each sector carrying a rhomb 30 by means of plate 26, strap 25, and screws 27.
Patent GB-256733-A (GB)
Title: Improvements in and relating to telephone transmitters
IPC: H04R19/00
Filed: 1925-05-28
Abstract: 256,733. Green, G. May 28, 1925. Addition to 242,847, [Class 40 (iv), Telephones &c.]. Condensers.-A condenser is connected in series with an inductance coil, which may form the coil of a telephone receiver, or the primary winding of a transformer, the secondary of which is connected in the telephone circuit. The capacity of the condenser is above 0.04 microfarad and the value of the inductance is such that a frequency range of from 40 to 600 may be obtained. The plates of the condenser have a thickness less than 1/5000th of an inch and are free to vibrate in response to sound vibrations. The Provisional Specification states that each condenser plate may consists of a layer of metal, e.g. gold leaf, fixed on a layer of dielectric material, such as paper. Specification 227,561 is referred to.
Patent GB-798852-A (GB)
Title: Poppet valves
Inventor: CLARKE GEOFFREY RAYMOND
IPC: F01L1/32
Filed: 1955-05-16
Abstract: 798,852. Valve gear. VALVES, Ltd. May 3, 1956 [May 16 19551, No. 14031/55. Class 7(6) [Also in Group XXIX] The rotation of a poppet on its seat is produced by the compression, during opening of the valve, of a washer 20 having resilient radial tongues twisted about radial axes and interposed between the valve stem 18 or a part 16, 19 rotatable therewith and a part rotatable relative thereto, e.g. the valve stem guide 21, 22. The washer acts on the part 16, 19 through the spring 15.
Patent GB-1215107-A (GB)
Title: Improvements in or relating to automobile ignition combination lock mechanisms
Inventor: LEBLANC EDWARD HENRY
IPC: E05B37/16
Filed: 1969-03-18
Abstract: 1,215,107. Locks. E. H. LEBLANC. 18 March, 1969, No. 14046/69. Heading E2A. An automobile ignition combination lock comprises an ignition lock housing 10, a casting 68 rotatably mounted in the housing, a key lug 78 in the casting and a key way in the housing for locking the housing against rotation, a plurality of spring urged push buttons 20, 32 mounted on the face of a knob 12 on the casting, a spring urged spindle 42 axially slidable and the casting, means for sliding the spindle against the action of a spring so that projection on the spindle engage notches in the key lug, thereby allowing the key lug to move to disengage the key way and free the casting to rotate when the push buttons have been depressed in the correct sequence. The spindle 42, slidable in the casting in the housing 10, has shoulders 91 which are engageable and notches 86 in the key lug, 78, or are displaced therefrom to project the key lug, into a slot 108 in the housing 10 and thereby retain the casting against rotation and prevent rotation of an ignition switch 106 secured to the casting. To free the casting for rotation the push buttons 20 are depressed in the correct sequence, thereby causing a finger 31 depending from each push button to project from a slot in a ring 36 abutting the central push button 32, into a selected plot 64 in one of a series of annular elements mounted on a bushing 48 on the spindle 42, when each push button is released the finger engaging in the slot moves the spindle against the action of the spring 34 and releases the previously engaged finger. The spindle moves to a position in which the shoulders 91 engage the notches in the key lug, and the key lug is urged to disengage the key way by springs 84 freeing the casting from the housing and allowing it to be rotated by turning the knob 12 to rotate the ignition switch 106. The switch is locked by depressing the button 32 which moves the guide ring 36 to displace the engaged finger 30 from the slot 64, the spindle is moved by the spring 34 and displaces .the key lug into the by way.
Patent GB-544050-A (GB)
Title: Improvement in pencil and india rubber holders
IPC: B43K23/00
Filed: 1941-08-15
Abstract: 544,050. Pencil holders. MACINTOSH, A. Aug. 15, 1941, No. 14265/40. Drawings to Specification. [Class 146 (iii)] A pencil and indiarubber holder is in the form of a tube of wood, cardboard, papier mÔchÚ, celluloid, synthetic resin, &c. having a screw thread of slow pitch formed along the whole of the inside to receive a pencil, which is screw-threaded on the outside. A screw-threaded or plain indiarubber is screwed into one end of the holder. Reference has been directed by the Comptroller to Specifications 7864/95, 12921/00 and 2301/08, [all in Class 146].