baber/WOPTO huggingface dataset:
Patent GB-513759-A (GB)
Title: Improvements in or relating to dental impression trays
IPC: A61C9/00
Filed: 1938-06-03
Abstract: 513,759. , Dental impression trays. MONTGOMERY, H. H., and BOURGEOIS, A. J. June 3, 1938, No. 16703. [Class 81 (ii)] A dental impression tray 10 for the lower jaw is U-shaped in cross-section comprising an inner rim 15 and an outer rim 16. The inner rim has a narrow portion 17 at the front, and from this part the rim increases in depth abruptly to a location 18 at each side and thence gradually curves upwards to a shallow point 20 slightly in advance of the middle part of the rim. It then increases slightly in depth to location 201 after which the rim is rounded rearwardly and upwardly at point 21. The outer rim is flared outwardly with no variation in depth of the wall 23 to a point 24 at about the middle of the outer rim after which it gradually decreases in depth as shown at 25 and vanishes at point 26 where it meets the inner rim. The front portion of the outer rim is rounded up to near point 25 from which it gradually approaches the horizontal. A handle 12 is provided on the front end of the tray, and the outer rim has a notch 22 to accommodate the labial frenum. The tray is stated to anatomically follow all the available bony jaw structure and non-muscular tissue, giving an impression of the maximum non-muscular denture seating area. In a modification the tray is built up of telescopically arranged segments bolted together conforming to the shape described, and the handle is bolted on to one of the segments.
Patent GB-1034340-A (GB)
Title: Improvements in transparency viewers
IPC: G02B27/02
Filed: 1964-04-22
Abstract: 1,034,340. Transparency viewer. J. G. V. MASON. April 22, 1965 [April 22, 1964], No. 16730/64. Heading G2J. A transparency viewer has a housing consisting of two identical sections 8, 9 which comprise grooves 11,12, 13 for mounting a lens 2, the transparency 4, and a translucent screen 3 respectively, the two sections 8 and 9 being held together by rubber bands or O-rings 22 or cement.
Patent GB-256198-A (GB)
Title: Electric discharge apparatus for converting electric currents
IPC: H01J21/18
Filed: 1926-07-03
Abstract: 256,198. Hazeltine, L. A. July 28, 1925, [Convention date]. Vacuum tubes.-A valve of the type described in Specification 218,675 has two main electrodes acting alternately as anode and cathode, a control electrode, and a constant magnetic field, the electrodes being arranged so that the projections of their active portions on a plane perpendicular to the magnetic field do not overlap the projections of the control electrode. The main electrodes mav consist of bars or strips, but preferably of tubes 6, 7, Fig. 4,arranged alternately, and the control electrodes consist of plates 5 connected by side plates 24, and spaced from the tubes by insulators 30. The direction of the magnetic field is indicated by dotted lines. The electrodes 6 are secured by end plates 26, Fig. 2B, having insulating bushings 32 to receive the outer main electrodes, which are also secured by end plates. As shown in Fig. 1A, a continuous-current valve structure is mounted in two parts 1, 2, and an alternating-current valve structure in two parts 3, 4 between the poles 11 of a magnet energized by windings 8, the core being arranged so that both ends and the tops of the valve structures are open for bringing out leads. Each valve is enclosed in a metal shell 13 preferably polished to retain heat. The strength of the magnetic field is such that the natural period of the rotary motion of electrons passing between the main electrodes does not equal the time taken by an electron to pass between the electrodes, nor a sub-multiple of that time. Insulators 29, 31 are interposed in all paths where active metallic surfaces would otherwise face one another along the lines of the magnetic field. The paths along which electrons drift perpendicular to the magnetic field and to the flux between the electrodes are free of insulating barriers.
Patent GB-389447-A (GB)
Title: Improvements in or relating to means for regulating multi-motor drives
IPC: H02P5/68
Filed: 1931-06-09
Abstract: 389,447. Maintaining defined speeds of motors. SIEMENS-SCHUCKERTWERKE AKT.-GES., Siemensstadt, Berlin. June 9, 1931, No. 16801. Convention date, June 25, 1930. Void [Published under Sect. 91 of the Acts]. [Class 38 (iii).] A motor 1 of a multi-motor drive of a paper-making machine is maintained at constant speed by impressing upon the grid of a valve 6 an A.C. derived from a tachometer alternator 8 driven by the motor. A standard frequency A.C. is impressed upon the anode of the valve and the resulting pulsating anode current is used to excite an auxiliary field 5 of the motor.
Patent GB-859378-A (GB)
Title: Improvements in electric protective equipment
Inventor: HICKS BRUCE CLIFFORD
IPC: H01T1/14
Filed: 1956-05-31
Abstract: 859,378. Fusible cut-outs. E. M. P. ELECTRIC Ltd. May 28, 1957 [May 31, 1956], No. 16848/56. Class 38(1) [Also in Group XXXV] A surge diverter or lightning arrester comprises a safety device S attached to a surge diverter comprising a body 1 housing a spark gap assembly 53 and non-linear resistor blocks 2. The safety device S comprises a sleeve 13 in which are accommodated two terminal members 11, 12, the member 11 being fixed and in conductive relation with the resistor blocks 2 whilst the member 12 is slidable in the sleeve 13. The facing surfaces of the members 11, 12 are formed with projections supporting a sleeve 16 which houses a gas producing or explosive member 17. The members 11, 12 are normally held together by a conductor element 18 which passes through the member 17. When a surge appears on a line attached to the surge diverter by a lead 52 which is of sufficient magnitude to damage the diverter the current flow through the conductor element 18 heats the conductor to cause either sufficient gas to be generated or an explosion to occur by means of the member 17 thus ejecting the terminal member 12 from the sleeve 13 whereby the surge diverter is disconnected before it is damaged. In another embodiment the safety device comprises two parallel current paths; one comprising the conductive member 18 whilst the other includes a spark gap whilst in another embodiment the resistor blocks 2 are replaced by an inductor. The Provisional Specification describes an arrangement wherein the conductive member is arranged to melt when a heavy current flows therein, the lower terminal member then being ejected by means of a spring. Alternatively the ejected member may operate a separate disconnecting member. Specification 782,902 is referred to.
Patent GB-916506-A (GB)
Title: Substituted chlorophenols
Inventor: MCKAY ARTHUR FERGUSON
IPC: C07C39/367
Filed: 1960-05-12
Abstract: Shaving creams, shampoos, soap, and like compositions contain as germicidal, fungicidal, or antiseptic agent 2-(3.4-dichlorobenzyl)-4-chlorophenol and/or 2-(3.4-dichlorobenzyl)-4.6-dichlorophenol.  The compositions may contain anionic or non-ionic surface active agents, or both.  An antiseptic liquid soap may be made by incorporating the antiseptic agent in hot ethanol or glycerol and adding with thorough mixing to a cold solution of clear potash soap.  A germicidal bar soap may be made by adding 1-10% of the chlorophenol compound to a soap containing a high proportion of fatty acids from coconut oil, the mixing being effected at the same stage as the incorporation of perfume and colouring agent.  The Provisional Specification refers also to the use of 4-(3.4-dichlorobenzyl)-2-chlorophenol and similar compounds containing instead of the 3.4-dichlorobenzyl substituent a 3-nitrobenzyl or 3-nitro-4-chlorobenzyl group.ALSO:The invention comprises 2-(3,4-dichlorobenzyl)-4-chloro- and 4,6-dichloro-phenol and a process for their preparation by reacting 4-chloro- or 2,4-dichloro-phenol with 3,4-dichlorobenzyl chloride in the presence of a Friedel-Crafts catalyst e.g. aluminium chloride or zinc chloride.  The reaction is preferably carried out at 100-180 DEG C. These compounds may be used as germicides or fungicides.  The Provisional Specification comprises also 4-(3.4-dichlorobenzyl)-2-chloro-phenol and similar compounds which contain, instead of the 3.4-dichlorobenzyl substituent, either the group 3-nitrobenzyl or the group 3-nitro-4-chlorobenzyl.ALSO:A bactericidal and fungicidal composition comprises 2 - (3,4 - dichlorobenzyl) - 4 - chlorophenol and/or 2 - (3,4 - dichlorobenzyl) - 4,6-dichlorophenol and an extending agent. The active compounds may be formulated in solid or liquid form together with surface active agents.  They may be prepared in the form of pellets, tablets, granules, powders, dusts, pastes, or ointments.  The cosmetic preparations include shaving creams, shampoos, astringent preparations, and facial creams.  An example describes an astringent composition containing aluminium chloride, 2-(3.4-dichlorobenzyl)-4.6-dichlorophenol and water.  The Provisional Specification comprises also compositions containing 4 - (3.4 - dichlorobenzyl) - 2 - chloro - phenol or similar compounds containing instead of the 3.4-dichlorobenzyl substituent a 3-nitrobenzyl or 3-nitro-4-chlorobenzyl group.
Patent GB-761917-A (GB)
Title: Electric transformers comprising electrostatic shielding means
Inventor: KURITA KENTARO
IPC: H01F27/34
Filed: 1954-06-08
Abstract: 761,917. Transformers. KABUSHIKI KAISHA, HITACHI SEISAKUSHO HITACHI, Ltd. June 8, 1954, No. 16858/54. Class 38 (2). In an electric transformer which comprises a number of axially disposed disc-like coils the electrostatic stresses are distributed throughout the winding by the provision of metallic members 9, 10, 11, 12 placed between adjacent turns (such as 1, 2) of the disclike coils, the metallic members being either connected together or to a turn in an adjacent disc coil. Each disc coil may have more than one metallic member disposed between succeeding adjacent turns, these members being connected together in pairs in different coils, all together in a single coil and to a turn in another coil and to the high-tension terminal 13 as desired. Alternatively the metallic members may be provided in alternate disc coils only.
Patent GB-569989-A (GB)
Title: Improvements in abrasive articles
Filed: 1943-10-14
Abstract: An abrasive article, particularly a grinding-wheel, has the abrasive grains bonded by the vulcanization product of a mixture of natural rubber, sufficient sulphur to vulcanize the rubber to the "hard rubber" state, and a synthetic rubber consisting of a copolymer of a major proportion of isobutylene and a minor proportion of a diolefine other than butadiene, preferably isoprene. The synthetic rubber is present in the proportion of 0.2 to 5 to 1 of natural rubber. The rubber and sulphur are first mixed, and are then blended with the synthetic rubber and antioxidants, accelerators or the like, such as zinc oxide, diphenyl guanidine, etc.; the product is milled with about four times its weight of abrasive grains such as aluminium oxide or silicon carbide, formed into the desired shape and cured. Specifications 523,248, [Group IV], and 569,076 are referred to.
Patent GB-185869-A (GB)
Title: Improvements in or relating to cabinets, cupboards and the like
IPC: A47B77/12
Filed: 1921-06-20
Abstract: 185,869. Russell, J. W. June 20, 1921. Stoves combined with cabinets &c.-A cabinet, cupboard or dresser is provided with a gas copper or geyser o, a gas stove r and a sink t &c. enclosed within doors, and the woodwork adjacent the stove and copper may be lined with heat resisting material.
Patent GB-1461833-A (GB)
Title: Collection of bales
IPC: A01D85/00
Filed: 1974-04-18
Abstract: 1461833 Collecting bales T H D MEIJER 18 April 1974 [20 April 1973] 16908/74 Heading B5F A device for collecting bales from a baling press and arranging them in groups comprises compartments defined by a central partition 6<SP>1</SP>, side partition 6 and side walls 5, a diverter 9 at the end of each side partition 6 and an auxiliary diverter at the end of the central partition. The diverters 9 have extensions 10 whereas the auxiliary diverter has a pair of extensions 10<SP>1</SP>. The auxiliary diverter is spring-biased against stops 11 in its two limit positions. In use a first bale is guided into a compartment by the diverters 9, 9<SP>1</SP> and pivots the auxiliary diverter to its limit position. The diverters 9 are only held in their second limit position by the last bale in the compartment. Alternatively the diverters may have two spring-biased limit positions. When the device is full of a group of bales a tail gate 4 is opened by the eighth bale engaging a linkage (23), (24), Fig. 8b (not shown), The auxiliary diverter 9<SP>1</SP> may have a wing plate 17, Fig. 7, to prevent it piercing a prematurely fed bale. Alternatively a roller could be provided on the end of the wing plate. The bales are guided to the device by hose covered coil springs 15.
Patent GB-735747-A (GB)
Title: Focusing adjusting system
IPC: G03B19/18
Filed: 1953-06-19
Abstract: 735,747. Automatic focusing control systems. STANDARD TELEPHONES & CABLES, Ltd. June 19, 1953 [Sept. 22, 1952], No. 17039/53. Addition to 735,743. Class 38 (4). [Also in Group XL (b)] Automatic focusing of a television or photographic camera is effected by obtaining a series of alternately over-and-under focused images on the camera photo-sensitive screen or on the screen of an auxiliary camera, producing therefrom two series of electric signals characteristic of the fine detail of the over-and-under focused images, respectively, and using these signals (a) to adjust the degree of over- and under-focusing until both series of signals have the same strength ; and (b) at the same time to adjust the focus of the main camera lens system. As shown, applied to a television camera 2, an auxiliary television camera 6 is provided, the focusing lenses 1, 4 of the respective cameras being carried on a frame 5 movable by a servomotor 18. A shutter disc 7 in the light path of the auxiliary camera and continuously rotated by a motor 25, carries two diametrally situated transparent plates or lenses 8, 9 of different optical length, whereby, when the main camera 2 is in focus the auxiliary camera 6 is equally over- and under-focused when the respective plates 8, 9 pass the light from lens 4. The auxiliary camera output which consists of two interlaced series of pulses corresponding to the over- and under-focused images, is amplified at 10 and fed through a high-pass filter 11 (2 to 4 megacycles) which passes only those signal frequencies corresponding to fine detail of the image, to a switch 12 operated synchronously with the shutter disc. The switch, Fig. 2 (not shown) separates the two series of pulses and directs them respectively to rectifiers 13, 14 the outputs of which are compared at 15. Normally with the camera 2 in focus the rectifier outputs are equal. Defocusing of the camera 2 varies differentially the over- and under-focusing of the auxiliary camera to produce a corresponding differential variation in the rectifier outputs. This difference is used in known manner to operate the servo motor 18 which refocuses the main camera as it brings the lens 4 to the position where the two images on the photo-cathode of the auxiliary camera are equally over- and under-focused respectively. Modifications. The auxiliary tube may be dispensed with, the shutter disc 7 in this case having three focus-controlling windows associated with the camera 2. One window provides perfect focus on the cathode for the picture signals, and the other two windows function similarly to the windows 8, 9 above preferably during the vertical blanking time.
Patent GB-313009-A (GB)
Title: Heat-exchanging structure for regenerative furnaces of all kinds
IPC: F28F21/04
Filed: 1929-06-04
Abstract: 313,009. Strack, O., and Pfalzische Chamotte-und Thonwerke (Schiffer und Kircher) Akt.-Ges. June 4, 1928, [Convention date]. Void [Published under Sect. 91 of the Acts]. Regenerators.-The checkerwork of reversible regenerators is arranged in two zones, one having wide passages surrounded by thick walls and the other narrow passages with thin walls, the first-mentioned zone being located nearest the heating gas supply. The zones may be one above the other separated by an intermediate zone of bricks having conical passages. The air or gas to be heated is admitted to the lower zone having narrow passages where it is quickly heated and on passing into the upper zone having wide passages abstracts little heat due to the small temperature difference. Alter the heat of the lower zone has been practically completely abstracted the gas passes to the upper zone at a lower temperature, so that the heat exchange takes place first chiefly in the lower zone and thereafter chiefly in the upper zone. The two zones may be arranged side by side separated by a vertical wall.
Patent GB-1512661-A (GB)
Title: Scanner flaw detection systems
IPC: G01N21/88
Filed: 1975-04-24
Abstract: 1512661 Flaw detecting system INTEC CORP 24 April 1975 [30 April 1974] 17140/75 Heading G1A In a system for scanning material 18 for flaws the output of detector 22 is applied to baseline extractor means 40 which provides a baseline signal B(t) proportional to the output of the detector when scanning a flaw-free portion of the material, and the system further comprises discriminator means 56 which signals a flaw when either the difference between the detector signal, A(t) and the baseline signal B(t) exceeds a given threshold, or the detector signal A(t) exceeds a threshold signal proportional to the baseline signal, KB(t). A light beam from a helium, neon or argon ion gas laser is scanned across a moving web of material 18 by a galvanometer mirror 14. Transmitted (or reflected) light is received by a photo-multiplier tube 22 and the signal from this is passed to a clamp circuit 30 via low-pass filter 28 which maximizes the signal to noise ratio. An f.e.t. 34 is actuated by a pulse generated at the end of a scan line when the beam passes on to a mask 15, and clamps the ambient light signal to zero volts. In the baseline extractor 40 analogue to digital conversion by the comparator (42), Fig. 2 (not shown) in conjunction with capacitor (46) produces a moving average B(t) of the baseline signal which is passed via a buffer amplifier (48) to threshold circuit 54 in one mode and in a second mode (switch 49 closed) to differential amplifier 50 as well. A variable resistor (55) in circuit 54 is used to scale the signal B(t) by a factor greater than 1 for positive-going signals and less than - 1 for negative-going and the scaled output KB(t) is applied to discriminator 56 together with the output from amplifier 50 and active scan position information from circuit 24. When the output from amplifier 50 exceeds the threshold during a scan interval the discriminator passes a flow output signal. An output from circuit 56 also causes a switch (62) in hold circuit 60 to open to enable the charge on the capacitor (46) to hold the B(t) signal to the level existing just prior to the flow, so preventing large dips in the B(t) signal during wide flows.
Patent GB-1261328-A (GB)
Title: Oxidative coupling and dehydrogenation of methyl-substituted aromatic and heterocyclic compounds
Inventor: DUKE ROY BURT JR
IPC: C07C15/20
Filed: 1970-04-10
Abstract: 1,261,328. Oxidative coupling and dehydrogenation of methyl substituted aromatic and heterocyclic compounds. MARATHON OIL CO. 10 April, 1970 [27 May, 1969], No. 17221/70. Heading C2C. [Also in Division C5] A process for both oxidatively coupling and dehydrogenating one or more compounds of formula Ar-CH 3  where Ar is a substituted or unsubstituted aromatic or heterocyclic ring comprises forming a reaction-mixture of the said compound with iodine to act as a promoter, and oxygen, and passing the reaction mixture at elevated temperature through two reaction zones, the first being an inert zone and the second containing, as a catalyst, one or more chromites. The examples describe the preparation of 4,4<SP>1</SP>-dibromobibenzyl; 4,4<SP>1</SP>-dibromostilbene; 4,4<SP>1</SP>-dicyanostilbene; 4,4<SP>1</SP>-dicyanobibenzyl; 4,4<SP>1</SP>-diacetylbibenzyl; 4,4<SP>1</SP>-diacetylstilbene; 4,4<SP>1</SP>-bis-(carbmethoxy)-bibenzyl; 4, 4<SP>1</SP> - bis - (carbmethoxy) - stilbene; 4,4<SP>1</SP>- dimethoxybibenzyl; and, 4,4<SP>1</SP>-dimethoxystilbene.
Patent GB-1335941-A (GB)
Title: Method of decreasing the impurity content of solutions by electrolysis
IPC: C02F1/467
Filed: 1972-04-14
Abstract: 1335941 Electrolytic cell for purifying electrolyte HOOKER CHEMICAL CORP 14 April 1972 [14 April 1971(5)] 17362/72 Heading C7B An electrolyte solution containing, as impurity, at least one metallic material (metal compound or free metal, ) e.g. up to 10% of Hg, Pb, Cr, Cu, Cd or Zn, phenolic material, e.g. up to 10% of phenol, mono-, di-or trichlorophenol, or 3, 4, 5- trimethyl phenol, or material providing cyanide ions, e.g. up to 5%, is electrolysed in an electrolytic cell containing at least one cathode and one anode, and a bed of particles of porosity 40 to 80% distributed in the solution e.g. by the flow of the solution through the cell preferably at a velocity of 0À5 to 100 cm/sec, to decrease its impurity content. The solution may also contain other impurities such as chlorinated organic compounds, chlorine, HCI, hypochlorites or hypochlorous acid, sulphate, fluoride, silicofluoride or phosphate; and support electrolytes such as borates, ammonia, NaCl, CaCl 2 , H 2 SO 4 , NaCN, NaOH, NaHCO 3 , HCl or chloroacetates. The particles may be of graphite or metal, or have a metallic surface, e.g. of Ru, Pt, Cu, Ag or Zn, or conductive metal compound, e.g. Fe-P, carbide, boride or nitride of Ta, Ti or Zr, PbO 2  or RuO 2 ; or the particles may be non- or semi-conductive, e.g. (PTFE coated) glass beads, polystyrene spheres, sand, fly ash, oxidised Fe-P, ZrO 2  or Al 2 O 3 . The electrodes may be of graphite, Pt or Ir deposited on Ti or Ta base metal, PbO 2 , MnO 2 , RuO 2 , Co, Ni, Cu, W bronze, or nitride or boride of Ta, Ti or Zr. The cell maybe of polyacrylate, polymethacrylate, polytetrahaloethylene, polypropylene, rubber, concrete, iron or steel, and operated under sub-or super-atmospheric pressure. The electrodes may be separated by a diaphragm of PTFE, coated screen, fiberglass, asbestos or porous ceramic. The electrolyte may be recirculated.
Patent GB-569316-A (GB)
Title: Tiles
IPC: E04F13/14
Filed: 1943-10-22
Abstract: 569,316. Facing tiles. BLAKEY, J. B. Oct. 22, 1943, No. 17402. [Class 87 (i)] Tiles adapted to meet cornerwise overlapping along one. edge such as the tiles of a tiled fireplace have the back edge of the face tile A and the abutting edge of the corner tile B formed with interlocking surfaces A<1>, B<1> positively preventing displacement when the tiles are cemented.
Patent GB-250435-A (GB)
Title: Improvements in machines for distributing fertilizing substances
IPC: A01C15/08
Filed: 1925-07-07
Abstract: 250,435. Hov, J. A. H. July 7, 1925. Manure distributers. - In a machine in which the manure is discharged from a hopper by a reciprocating rod carrying fingers projecting into the hopper, the fingers 16 are made of dovetailed shape and of such a thickness as to force the manure through a discharge slot, the width of which is regulated by a plate or lath 4 movable longitudinally by means of a pivoted lever 8, pins on the plate 4 projecting through inclined slots 6 so as to cause the plate to rise vertically as it moves longitudinally. The dovetailed fingers have bevelled edges and are carried by an angle rod 12 supported by rollers 13 and pressed down by rollers 14 carried by pivoted arms 27 which are normally locked in position but are movable to allow of the removal of the rod 12. A pin on the rod 12 engages the groove of an interchangeable inclined cam wheel 17 driven by spur wheels 19, 20 and a connecting member 21 from the travelling wheel 1. Within the hopper 2 is a pronged stirring-shaft driven by cam and ratchet mechanism from the other travelling wheel 1<a>.