baber/WOPTO huggingface dataset:
Patent GB-581432-A (GB)
Title: Improvements in or relating to street lamps and the like
IPC: F21S13/10
Filed: 1945-03-23
Abstract: 581,432. Reflectors. NORTH MIDDLESEX GAS CO., DAWSON, F., and BURMAN, J. H. March 23, 1945, No. 7445. [Classes 75 (ii) and 75 (iv)] A lamp in which rays from the light source illuminate a surface without reflection, and in which a cut-out device is placed near the light source giving a penumbra lighting effect, comprises a concave member with a reflecting surface directed towards the source of light to concentrate and reflect the heat and light rays falling upon the concave surface back to the light source. The reflector, which is supported by four wires from the hook-shaped ends 13 of a plate 12, may comprise a trough-shaped concave portion 21 with a rim flange 22 bent over at the sides and ends of the trough, or according to the Provisional Specification, the concave portion may be saucer-shaped.
Patent GB-511873-A (GB)
Title: Improvements in attaching means for flushing cisterns
IPC: E03D1/26
Filed: 1938-03-10
Abstract: 511,873. Screw sockets. JOHNS & CO., Ltd., E., and CORN, E. R. March 10, 1938, No. 7454. [Class 89 (i)] [Also in Group I] Means for attaching an earthenware or like cistern to a horizontal support 2, such as the rear platform of a closet basin, comprise a downwardly-opening internally-threaded socket member 4 having a threaded shank 6 and head 5, which is secured liquid-tight in an aperture 10 in the bottom 11 of the cistern by a nut 15 or other clamping means engaging the threaded shank. The joint is rendered liquid-tight by rubber or like washers 9, 13. The socket, which may be supplied ready-fitted wih the cistern, is engaged by a holding-down bolt 17. The bottom of the cistern, or the support 2, may be recessed to receive the head of the socket and allow the cistern to abut the surface of the support.
Patent GB-291901-A (GB)
Title: Improvements in stage scenery and lighting effects and apparatus for use therewith
IPC: F21S2/00
Filed: 1927-03-17
Abstract: 291,901. Raikes, C. S. M. March 17, 1927. Optical-projection apparatus. - Stage scenery and lighting apparatus for producing changing scenic effects comprises double lanterns 10, 10<a> projecting upon the rear of a three-part plain screen 7 of fabric or frosted glass. The screen 7 is illuminated by flood lights 8, under " dimming " control, and the front of the screen is flooded by deep colours, means being provided for effecting colour changes. One of each pair of double lanterns is employed for projecting moving scenery effects, the other being used for colour flooding. In a modification, the screen 7 is replaced by a semi-circular panorama cloth on which moving scenic or other effects may be projected by double lanterns projecting radially on to the front of the cloth. The double lanterns may each comprise a fixed lantern element used, for example, for projecting panoramic scenes, and a movable lantern element for projecting the appearance, for example, of an aeroplane flying across the scene, and in order to group the double lanterns together so as to have substantially a common optical centre, each movable lantern element of the group comprises a lantern proper A, Fig. 3, with lamp S and optical condenser B, and a relatively movable optical system including the slide C, projection lens D and a mirror E. The required movement for scenic effects is obtained by rotating or tilting the parts C, D, E as a mechanical unit.
Patent GB-214798-A (GB)
Title: Improvements in electric burglar alarms
IPC: G08B13/22
Filed: 1923-03-15
Abstract: 214,798. Bogaerd, A., and Bocquet, A. March 15, 1923. Burglar alarms. - In burglar alarm system of the kind in which a current is continuously flowing in the circuit to energize an electromagnet, the current passes through a wire in a cable 3, which contains a large number of wires, and a distributor driven by clockwork selects different pairs of wires to convey the current. At one end the wires are divided into two groups, those in each group being connected together at points 4, 5. At the other end, two of the wires in the cable 3 are connected to a, battery 17 and the remaining wires are connected to contacts 39, 40 on opposite sides of a disc 23. A spindle 29, driven slowly by clockwork, is in two mutually insulated halves, which carry brushes 43, 43<1> pressing against the contacts. Brushes 45, 45<1>, pressing against the two halves of the spindle 29, lead the current to an electromagnet 19. On the magnet 19 being de-energized, its armature 54 bridges contacts 55, 55<1> in a local circuit. A push button 21 enables the battery 17 to be short-circuited for test purposes, and the armature 54 can be raised to within attracting distance again by turning a knob 62 on a spindle 63. The ends 4, 5 of the cable wires are attached to resilient contacts 7, 9 so that a pull on the cable gives the alarm, and these contacts are shunted by the ordinary alarm contact devices, such as a pendulum 12 in the centre of a ring 14, or a door contact 15. In a modification, Fig. 6, six contacts a, b, c - - on each side of the disc are connected to wires which are left insulated at the far end, and the positive wires are earthed, so that any attempt to connect all the positive wires together will result in connecting all the dead wires with the positive ones and a short-circuit as shown by the arrows will result. In a further modification, only those wires on each side are left dead, but the contacts on opposite sides of the disc to which they connect are displaced angularly and connected in pairs, so that positive and negative potentials are applied to them alternately and a burglar attempting to join all the positive wires together would cause a shortcircuit as soon as negative potential was applied to those which had previously been positive.
Patent GB-418107-A (GB)
Title: Process and device for extracting fats and oils from animal and vegetable material
IPC: C11B1/02
Filed: 1934-03-09
Abstract: <PICT:0418107/III/1> In a continuous process for extracting fat from animal and vegetable materials, the pulped raw material is heated in a thin layer under pressure, and the compressed pulp is then subjected to a sudden reduction in pressure whereby the fat cells burst.  Raw material is fed from a hopper 8 into a mincer consisting of a compressing worm 13 which coacts with rotary knives 11 and perforated discs 12 to produce a wet pulp which is forced into the narrow annular space 17 between a rotary ribbed cylinder 2 and a steam jacket 15.  From this preliminary heater the pulp is forced under high pressure by a pump 3 into a second heating drum and passes between two concentric steam jackets 20, 21, in which space a ribbed rotary element 22 is mounted and rotates together with or in an opposite direction to the inner jacket 21 mounted on a rotary cylinder 4.  The heated material then passes to an unheated vessel 5 maintained under pressure, which is connected through a pressure reducing valve 6 to a cyclone or centrifugal separator 7. The fat cells still present in the pulp burst after passing the valve 6 liberating a further quantity of oil.  Steam is discharged from the separator 7 through a pipe 33, oil and fat through a pipe 34, and solid residue through a pipe 35.  For materials which readily yield oil the preliminary heating drum may be omitted. The pulp may be rendered more liquid by addition of steam, water or solvents to the initial material.  The cyclone separator may be replaced by a rotary vacuum drying drum from which the products pass through a filter to separate the oil.
Patent GB-575255-A (GB)
Title: Improvements in and relating to electric induction apparatus
IPC: H01F27/32
Filed: 1943-05-14
Abstract: 575,255. Inductances ; transformers. BRITISH THOMSON-HOUSTON CO., Ltd. May 14, 1943, No. 7696. Convention date, May 16, 1942. [Class 38 (ii)] A winding of a transformer or other induction apparatus comprises a number of axially - disposed disc coils with solid insulation 25, 43 inside and outside the coil. spacers 27 in the middle of the winding providing a duct for cooling fluid, and edgewise - wound insulating strips such as 41, 42 between the adjacent disc coils. The strips 41, 42 may be pressboard which will stretch sufficiently to allow them to be wound edgewise. The conductors forming the coils may be wound with paper, and the turns nearest the cooling duct may be wound with an additional strip such as shown in Fig. 9, and consisting of a porous strip of paper 63 enveloped in a tape of a cellulose ester such as cellulose acetate 64. The outer insulating cylinder may consist of wet cellulosic material such as pressboard pulp pressed round the winding by tape and then heated so that the moisture is driven off and the insulation shrinks and fills up all the irregularities of the winding. The turns of each disc coil may be in parallel with each other. Specification 329,669, [Class 38 (ii)], is referred to.
Patent GB-994424-A (GB)
Title: Improvements in and relating to fasteners
Inventor: BIRMINGHAM DOUGLAS WILLIAM
IPC: F16B5/12
Filed: 1961-03-02
Abstract: 994,424. Stud and socket fastenings. F. T. PRODUCTS Ltd. Feb. 26, 1962 [March 2, 1961], No. 7703/61. Heading E2B. [Also in Division F2] A fastener, e.g. of synthetic, resin, has a plunger 13 extending into a bore 11A in a head 11 and joined along a line of weakness to the wall of the bore below the top of the head or to a hollow shank 12 extending from the bottom of the head so that when depressed, Fig. 5, the plunger shears from the fastener and enters the shank 12 to spread the tongues 18 of which the latter is composed. The head 11 may be circular or rectangular and is used to join two panels or to secure strip beading 19 which is snapped over or slid on to the head. In modifications, Fig. 6 (not shown) and Fig. 7, the members 18 are spread by the action of the plunger on protuberances on the inner surface of the members.
Patent GB-947324-A (GB)
Title: Improvements in or relating to footwear heels
IPC: A43B21/20
Filed: 1961-03-03
Abstract: 947,324. Boot &c. heels. A. B. THOMPSON. June 4, 1962 [March 3, 1961; May 31, 1962], Nos. 7816/61 and 21066/62. Heading A3B. A moulded plastic heel lift 10 has the required outline of the heel exterior and breast face and has its upper surface cupped and lower surface flat. Openings 15 are formed in the central region, and small protuberances 18 may be formed on the upper surface to provide grip while fitting the heel lift. Peripheral markings 17 may be formed to represent a laminated construction. A detachable top piece 19 having a similar outline may be attached to the heel lift 10 by spigots 22 on the top piece engaging holes 16 formed in the heel lift. The heel lift and top piece may be moulded from the same material e.g. polyethylene or P.V.C.
Patent GB-980035-A (GB)
Title: Improvements in or relating to automatic sewing and the like apparatus
IPC: D05B21/00
Filed: 1963-02-27
Abstract: 980,035. Sewing machines. G. M. PFAFF A.G. Feb. 27, 1963 [Feb. 28, 1962], No. 7854/63. Heading D1G. Mechanism for controlling the movements of a work-holder in two co-ordinate directions is housed in the standard of the machine, drive being transmitted from said mechanism to the holder via two parallel shafts arranged within the upper arm of the machine, and a member which extends from the shafts to the holder through an opening in the underside of the arm. A lower shaft 26, driven by a pulley 25, is connected by a chain 31 to the upper needle-driving shaft 10. The latter also drives perforated tape 11 controlling mechanism 6, 7, 8 for automatically moving the work-holder 24. A pair of shafts 12,13, driven by said mechanism, are coupled to a pair of arm shafts 14,15. Shaft 14 is in screw-threaded engagement with a member 16. Shaft 15 is formed with longitudinal teeth engaged with a rack member 21 transversely slidable in member 16. The latter extends downwardly through an opening 18 in the underside of the upper arm 4, and is connected to the work-holder 24 by a member 22. Shaft 26 is coupled by gears 33, 35 to a shaft 34 driving the looptaker 36. Specification 980, 034 is referred to.
Patent GB-330020-A (GB)
Title: Improvements in clips or holders for sheets of paper and the like
IPC: B42F9/00
Filed: 1929-03-12
Abstract: 330,020. Metcalfe, E., and Whyte, F. E. March 12, 1929. Clips, pivoted-jaw.-In spring clips for paper &c. sheets comprising a primary jaw for normally holding the papers and a supplementary jaw for holding the papers temporarily while the primary jaw is open, the supplementary jaw f is pivoted on the rear end a<2> of the primary jaw a and is pressed outwards by a flat spring g attached at g<1> to the jaw a. The jaw a is pivoted on a pin a<1> carried by side walls b on a base plate b<2>, and is actuated by a spring c. The outward movement of the jaw f is limited by engagement of lateral projections f<4> against the edges of recesses in the side walls b. In operation, a sheet of paper d to be inserted in the clip against the base plate b<2> is placed with its edge overlapping the end a<3> of the jaw a and then the jaw f is pressed against the base plate b<2>; continued pressure compresses the spring c and causes the rear end a<2> of the jaw a to recede from the base plate b<2> until it is clear of the edge d<1> of the paper, and on releasing the pressure the, spring c forces the end a<3> of the, jaw a to grip the paper before the jaw f releases its grip under the action of the spring g.
Patent GB-1049625-A (GB)
Title: Improvements in or relating to electron discharge devices
Inventor: SWAN ERIC DENNIS
IPC: H01J19/42
Filed: 1964-01-29
Abstract: 1,049,625. Magnetron switching devices. LITTON INDUSTRIES Inc. Jan. 29, 1964, No. 8025/65. Divided out of 1,005,818. Heading H1D. A high-voltage thermionic switching valve of Specification 1,005,818, is modified by providing an interaction space between the cathode and control electrode which is not tapered in cross-section so as not to be narrower towards the anode.
Patent GB-693753-A (GB)
Title: Improvements relating to electric programme-switching devices
Inventor: STEWART JOHN
IPC: H01H43/12
Filed: 1950-03-31
Abstract: 693,753. Code-signalling apparatus. FERRANTI. Ltd. June 26, 1951 [March 31, 1950] No. 8059/50. Class 118 (ii) [Also in Group XXXVII] A programme switch, e.g. for controlling illuminated advertizing signs, machine operations or a self-identifying radio transmitter, comprises a' rotor 6 to which one or more actuating elements 15 may be secured at desired points to operate the contacts at the desired intervals, the rotor having a complex motion consisting of, (1) a rotary motion, and (2) a reciprocatory motion. Elements 15 are secured by screws 18 to the rotor which is integral with a hollow shaft 7 carrying a toothed wheel 19, the number of teeth of which equals the number of element mounting hole 14 in the rotor, the teeth coinciding angularly with the spaces between said holes. The shaft 7 is mounted on a spindle 8 eccentrically mounted on a driving shaft 9. Rotation of the latter in one direction through one revolution results, in the rotation of rotor 6 and wheel 19 through one step in the opposite direction, since the teeth on wheel 19 co-operate alternately with fixed pins 21, 22 due to the eccentricity of spindle 8, the step-bystep movement of the rotor being accompanied by a radially outward movement thereof as each hole 14 comes opposite the actuating pin 3 of contacts 1. The latter are closed whenever an element 15 comes opposite said pin. A further switch may be located diametrically opposite the first to be actuated alternately. therewith. In a modification, Fig. 6, two switches 1, 1<SP>1</SP> are arranged side-by-side, one closing to control the emission of a "mark" signal and the other the emission of a "space" signal. The joint rotor 23 is located on the shaft 7 by a spring ball 29, and the shaft 7 is carried on spindle 8 by ball bearings 30, 31. A removable cover 24 on each side of the rotor holds in place the actuating elements, which are in the form of rollers 28 cooperating with studs 33 on tongues 32. In further modifications, the actuating elements may be pivoted permanently to the rotor and each switch may be normally closed, or opened and closed by successive actuations. The rotors may comprise a drum having axially-spaced rings into which the actuating elements may be plugged; or may comprise a rimless wheel:
Patent GB-579488-A (GB)
Title: Improvements in combined electric tumbler switches and plug couplings
IPC: H01H23/14
Filed: 1944-05-01
Abstract: 579,488. Two-part couplings. BUCKLE, R. P. S. May 1, 1944, No. 8105. [Class 38(i)] [Also in Group XXXVII] A tumbler switch comprises a cylindrical dolly which is withdrawable from its mounting block and contains the contacts and mechanism. Two pins 3, which are integral with fixed contacts inside the dolly 1, project from an opening 4 in its curved portion into sockets 16 of the fixed mounting block 17. The rotation in the " off " or " on " direction of the dolly on trunions in the fixed pins 3 causes the circuit to be bridged by a fuse 13 or not. The front is covered by an escutcheon plate 21 having side covers 26 for the slot 22 and raised hollow cheeks 23, one of which has a notch 25 to admit a projection 24 whereby the dolly when in the " off " position can be plugged into or withdrawn from the block 17. In Fig. 4 (not shown), two independent or coupled switches are mounted side by side in the same slot.
Patent GB-180793-A (GB)
Title: Improved means for weaving endless bands or belts
IPC: D03D3/00
Filed: 1921-03-17
Abstract: 180,793. Stone, F. M. March 17, 1921. Beat-up motions; reeds.-In a smallware or other loom for weaving endless belts with woven selvedges, the warps are shed by reeds a, a<4>, Fig. 1, which are moved up and down in supports c by means of rollers &c. d resting on levers e operated by cam-controlled lever mechanism. The supports c are attached to bars &c. w on blocks t connected by a shaft s, which is operated by a connecting-rod and a crank-disc on the firstmotion shaft, whereby the blocks t are caused to slide upon bars &c. u, and the reeds are caused to beat up the wefts inserted by the shuttle 5. Each reed comprises an upper bar 8, Fig. 9, having downwardly-extending dents fitting between the upwardly-extending dents on a lower bar. The latter dents are provided with stops a', whereby eyes a<2> to receive the warps are formed. The eyes in the adjacent reed are arranged alternately with those in the first reed. The reeds are arranged in frames carrying the rollers &c. d, Fig. 1. The reed dents may interfit so closely as to remain in position without using screws &c., but they may be further secured together by such means.
Patent GB-290552-A (GB)
IPC: C25D3/30
Filed: 1928-03-19
Abstract: 290,552. Siemens & Halske Akt.-Ges. Oct. 13. 1927, [Convention date]. Addition fo 286,673. Tin, obtaining.-Tin is deposited by the process claimed in the parent Specification as a plating on another metal for example on an iron plate; insoluble or soluble anodes may be used. The original tin lye may be obtained by leaching tin ore or scrap tin; in the latter case the scrap is held during leaching in an openwork iron vessel which afterwards serves as anode. Electrolysis is carried out at 70‹ C.
Patent GB-729823-A (GB)
Title: Improvements in or relating to alkali cellulose preparation
IPC: C08B1/08
Filed: 1952-04-02
Abstract: Comminuted cellulose having a particle size sufficiently small to pass through a 35-mesh sieve is slurried and agitated in a medium consisting of a saturated monohydric alcohol having from 2 to 5 carbon atoms in the molecule, dioxane, tetrahydrofuran or a mixture thereof, together with caustic alkali and water, the slurry containing up to 20 per cent by weight of cellulose based on the weight of the total slurry (calculated as moisture-free), and 0.2-1.8 parts of caustic alkali and 0.5-8.0 parts of water for each part of moisture-free cellulose.  The cellulose may be derived from any suitable source such as cotton, cotton linters or wood pulp. Alcohols which may be used include ethyl alcohol, n- and iso-propyl alcohols, n-, secondary, iso-, and tertiary butyl alcohols, methyl propyl carbinol, diethyl carbinol, methyl isopropyl carbinol, tertiary amyl alcohol, fusel oil and pentasol (a mixture of amyl alcohols); isopropyl and tertiary butyl alcohols are preferred.  The slurrying medium may be anhydrous or may contain water, e.g. ir may be an azeotropic mixture, but the water content is taken into account in calculating the water-cellulose ratio of the system.  Similarly any water added with the caustic alkali is taken into account.  The alkali-cellulose formed may be etherified without addition of more alkali or water to give cellulose ethers such as alkali-soluble and water-soluble carboxymethyl cellulose, hydroxyethyl cellulose, carboxyethyl cellulose, sulphoethyl cellulose, hydroxyethyl carboxymethyl cellulose, sulphoethyl hydroxyethyl cellulose, sulphoethyl carboxymethyl cellulose and cyanoethyl cellulose.  In an example (all parts by weight), 30 parts of purified air-dry wood-pulp containing 5 per cent of moisture and cut to pass a standard 40-mesh sieve are added with agitation to 566.4 parts of isopropanol containing 1.5 per cent of water and 65 parts additional water.  Then 31 parts of 49.7 per cent aqueous sodium hydroxide are added and agitation is continued, the temperature being kept at 18-25 DEG  C. The so-formed alkali cellulose is etherified to form a carboxy methyl cellulose without further addition of alkali or water.
Patent GB-164873-A (GB)
Title: Improvements in and relating to electric ship propulsion systems
IPC: B63H23/24
Filed: 1920-03-22
Abstract: 164,873. British Thomson - Houston Co., Ltd., (General Electric Co.). March 22, 1920. Alternating-current motors.-A form of squirrel-cage winding for a motor of the salient-pole type having both induction and synchronous characteristics is shown in Figs. 14 and 15. The high-resistance component consists of a number of bars 91 connected to short-circuiting rings 92. The low-resistance component consists of a heavy copper bar 93 in each pole-piece, and bars 94 between the pole-pieces which are connected to short-circuiting rings 95. The low-resistance winding has a high leakage-reactance and at high values of slip high induction-motor torque is produced.
Patent GB-313039-A (GB)
Title: An advertisement calendar
IPC: B42D15/04
Filed: 1929-03-15
Abstract: 313,039. Schr÷der, J. June 5, 1928, [Convention date]. Calendars.-A calendar and postcard combination particularly for advertisement purposes comprises a number of separate sheets each provided with a date section and a pictorial or picture postcard section detachably connected by perforations or similar means. The sections may be disposed in any convenient manner. As shown in Fig. 1, the pictorial section 13 is separated from the date section 14 by a row of perforations 15. The sheets may be united at one end to form a date block and the block or the superimposed sheets may be mounted in a box. The box, as shown in Figs. 3 to 5, comprises a base portion 2 with a hinged or sliding lid 1 having apertures 5, 6 for the display of a picture and two or more date names and figures. The base portion is provided with suspension means 9 and supporting means 10 and is recessed to accommodate these means and may serve as a letter or paper weight. A tongue or tongues 11 may be cut in the base to press the sheets against the lid or the tongues may be replaced by springs for this purpose.