baber/WOPTO huggingface dataset:
Patent GB-894024-A (GB)
Title: Improvements in or relating to dental apparatus
IPC: H02P7/288
Filed: 1960-05-24
Abstract: 894,024. Dental apparatus. SIEMENSREINIGER-WERKE A.G. May 24, 1960 [May 25, 1959], No. 18312/60. Class 81 (2). In dental apparatus having a plurality of handpieces for operating at different rotational speeds and one control element common to all the drives, a contact-breaker is interposed between at least one of the drives and the control element which is automatically opened when the handpiece associated with the drive is in the position of rest. As shown, Fig. 1, cord-drive handpiece 5 is driven by an electric motor 4. An air turbine handpiece 7 is supplied with compressed air and water through a common hose 9 passing under a free pulley 10 and over a fixed pulley 11 to a connection 12 where air and water supply pipes 13 and 14, having electromagnetically-controlled valves 15 and 16, are joined. When the handpiece 7 is in the socket 6, the pulley 10 rests on the push-button 18 of a microswitch 19 which contains a changeover contact 20, Fig. 2. In a control-box 3 a lever 21 is mounted on a spindle 22 which carries staggered cams 23, 24 which operate microswitches 27a, 27b, respectively. While the pulley is resting on the switch 19, the contact 20 is in the position shown in Fig. 2 and the motor 4, represented by symbols 28, 29 is connected with its rheostat 30 in parallel with the armature coil to the main switch 31. If the lever 21 is swivelled, first the switch 31 is closed and then the rheostat 30 operates to control the motor speed. If the handpiece 7 is removed from the socket 6, the contact 21 in the switch 19 is thrown over (not shown) and connects with the coils 33, 32 of the electromagnetic valves 15 and 16. Swivelling of the lever 21 first closes the switch 31 and then the cam 23 operates the switch 27a opening the air supply valve 15 and the cam 24 similarly causes the water supply valve 16 to open. In a modification (not shown) a simple contact replaces the change-over contact 20 and a separate pushbutton microswitch is associated with the rest which receives the electrically-driven handpiece 5.
Patent GB-596820-A (GB)
Title: Method of preparation of non-aqueous olefine polysulphide latices
IPC: C08L81/00
Filed: 1945-07-18
Abstract: Non-aqueous olefine polysulphide latices are prepared by substituting for the continuous phase of a stabilised aqueous latex having fine particles, an organic liquid or mixture of organic liquids immiscible with water and not dissolving the olefine polysulphide.  Suitable aqueous latices are described in Specification 11362/45 as open to inspection under Sect. 91. Preferably the organic liquid has a density close to that of the polysulphide particles and also a low heat of vapourisation. Suitable liquids are trichlorethylene and perchlorethylene.  The aqueous latex may be concentrated first, e.g., to a concentration of 40 per cent.  The organic liquid is added to the aqueous latex with agitation, an emulsion being formed which thickens gradually and may become a semi-rigid gel from which water exudes together with last traces of dissolved salts.  The gel suitably contains 60 per cent by weight of the olefine polysulphide. A proportion of the protective dispersing agent used in the preparation of the aqueous latex may be added before the organic liquid.  The gel may be diluted with further quantities of the organic liquid or of another organic liquid.  Non-aqueous solutions of rubber, synthetic rubber or synthetic resin may be mixed with the latices.ALSO:Non-aqueous olefine polysulphide latices are prepared by substituting for the continuous phase of a stabilized aqueous latex having fine particles, an organic liquid or mixture of organic liquids immiscible with water and not dissolving the olefine polysulphide.  Suitable aqueous latices are described in Specification 11362/45, as open to inspection under Sect. 91. Preferably the organic liquid has a density close to that of the polysulphide particles and also a low heat of vaporization. Suitable liquids are trichlorethylene and perchlorethylene.  The aqueous latex may be concentrated first, e.g. to a concentration of 40 per cent. The organic liquid is added to the aqueous latex with agitation, an emulsion being formed which thickens gradually and may become a semi-rigid gel from which water exudes together with last traces of dissolved salts.  The gel suitably contains 60 per cent by weight of the olefine polysulphide.  A proportion of the protective dispersing agent used in the preparation of the aqueous latex may be added before the organic liquid.  The gels may be diluted with further quantities of the organic liquid or of another organic liquid. Non-aqueous solutions of rubber, synthetic rubber or synthetic resin may be mixed with the latices.
Patent GB-1160665-A (GB)
Title: Improvements relating to a Corn Harvesters
IPC: A01D45/02
Filed: 1968-04-18
Abstract: 1,160,665. Corn harvester. DEERE & CO. 18 April, 1968 [18 April, 1967], No. 18493/68. Heading A1F. A corn harvester, including a pair of snapping rolls and gathering chains, is characterized in that the snapping rolls are supported in cantilever fashion at their delivery ends. A main drive shaft 60 that extends transversly of the harvester provides drive to bevels 73, 74 that are fast with sprockets 24, 25, Fig. 2 (not shown) of the gathering chains and drive to bevels 67, 68 mounted on shafts 37, 38 of the snapping rolls. Each shaft is journalled in two bearings of a sleeve 39 that is an extension of the gear housing 11 such that snapping rolls 50, 51 which are pinned to their respective shafts at 52, are supported at their delivery end only. The rolls 50, 51 have flutes 54 tapering at their forward ends and meshing at their rearward ends.
Patent GB-120295-A (GB)
Title: Improvements in and relating to X-ray Tubes.
IPC: H01J35/16
Filed: 1917-12-14
Abstract: 120,295. British Thomson - Houston Co., (General Electric Co.). Dec. 14, 1917. R÷ntgen - ray tubes. - In a highly - exhausted tube working independently of gas ionization, as described in Specification 14892/13, a screen negatively charged with respect to the anode is arranged so as to cut off X-rays proceeding from parts of the anode other than the focal spot, and to repel secondary cathode rays to the back of the anode The screen may be of heavy metal such as tungsten or molybdenum. As shown, the screen 18, provided with an aperture 19, is attached to the focusing member surrounding the spiral cathode filament. In a modification, it is attached to nearly-circular strips fitting frictionally in a tubular part of the envelope around the stem of the anode, and is then charged by cathode rays only. It may be flat or may partly surround the anode. The aperture may be barred by a grating of fine wires, to increase the electrostatic repulsion. A hood having windows for the cathode and X-rays may be fitted around the anode as described in Specification 10454/15. The cathode is supported by conductors from a split tube 9 sprung over a stem 6, and the anode by an iron tube 11 fitting frictionally in an extension of the envelope.
Patent GB-1535595-A (GB)
Title: Safety harness
IPC: A62B35/00
Filed: 1976-05-07
Abstract: In the rope-up kit comprising a seat belt and a chest belt an elastic element (7) is arranged between the rope-up point (6) and the seat belt (3). This element stretches during the hauling shock. Thus, the hauling shock is mainly transmitted to the chest belt (4), and this prevents spinal compression. After the hauling shock the elastic element transmits the rope traction mainly onto the seat belt. The chest belt is then relieved, and this prevents constriction. An intended breakage member (16) is arranged in parallel with the elastic element in order to prevent stretching of the element during normal loading. <IMAGE>
Patent GB-848639-A (GB)
Title: Hydrocarbon oils having improved electrical properties
IPC: C10L1/222
Filed: 1959-06-02
Abstract: A hydrocarbon fuel oil boiling in the range 75 DEG F. to 750 DEG F contains 0.00005% to 0.5% by weight of a tetraalkyl ammonium salt of a carboxylic acid having one or more hydroxy groups, and one or more carboxyl groups, and 2 to 10 carbon atoms per molecule, and in which the alkyl groups of the tetraalkyl ammonium group each contain 1 to 24 carbon atoms.  The fuel may be a gasoline, kerosene, turbo-jet fuel, diesel fuel or heating oil.  In examples turbo-jet aviation fuel contains mono-(trimethylsoya-ammonium) malate, di-(trimethylsoya-ammonium) malate, trimethylsoya-ammonium glycolate, mono-(trimethylsoya - ammonium) tartrate, trimethylsoya-ammonium lactate, dimethyldisoya-ammonium gallate, trimethylsoya - ammonium gallate, mono-(trimethylsoya-ammonium) citrate, di-methyldisoya-ammonium gluconate and tri-methylsoya-ammonium gluconate, and heating oil contains trimethylsoya - ammonium gluconate and di-(trimethylsoya-ammonium) malate (the "soya" group is derived from soy bean oil).  Lists of suitable acids and tetraalkyl ammonium groups are given.
Patent GB-582187-A (GB)
Title: Improvements relating to arrangements for determining distance by reflection of electromagnetic waves
IPC: G01S7/282
Filed: 1943-11-12
Abstract: 582,187. Radiolocation. STANDARD TELEPHONES & CABLES, Ltd. (International Standard Electric Corporation). Nov. 12, 1943, No. 18846. [Class 40. (v)] A radiolocation system comprises a superregenerative receiver A which also operates as the pulse transmitter. The quench oscillator B controls a pulse generator E operating at a submultiple (one fiftieth) of the quench frequency which feeds pulses to the receiver, of sufficient amplitude to cause it to oscillate strongly and operate as a pulse transmitter. The output from receiver A during the intervals between transmitted pulses is fed through a pulse amplifier C, to the deflecting plates of a cathode-ray tube D, the time base for which is produced by a generator G locked to the pulse generator E. The time base may be logarithmic in character to produce an open range scale for short distances or may be arranged to give indications only below a critical distance.
Patent GB-1338951-A (GB)
Title: Purification of alkane sulphonates
IPC: C07C303/20
Filed: 1971-06-03
Abstract: 1338951 Alkanesulphonates MARATHON OIL CO 3 June 1971 [10 Aug 1970] 18852/71 Addition to C2C Alkanemonosulphonates are recovered from the products of bisulphite sulphonation of olefins by adding water as necessary to dissolve the crude reaction products, heating at 20- 300‹ C. and selectively crystallizing out the monosulphonate and separating it from the mother liquor which may be concentrated to precipitate alkanedisulphonates, These may be freed from inorganic salts by dissolution in an organic solvent, e.g. an alcohol.
Patent GB-357245-A (GB)
Title: Air propellers
IPC: B64C11/34
Filed: 1930-06-20
Abstract: 357,245. Screw propellers. TURNBULL, W. R., Rothesay, New Brunswick, Canada. June 20, 1930, No. 18856. Convention date, June 20, 1929. [Class 114.] A variable pitch screw propeller has the pitchvarying mechanism disposed within sockets in the propeller hub and the electric motor unit mounted at the outer end of the drive shaft and the final reduction gear disposed between the spaced bearings of the blade roots. The propeller blades 2 are mounted in bearings 23, 25, 26 in sockets in the hub, which have spaces 6, 6<1> wherein is disposed worm reduction gear 5<1>, 7. The drive for the worm 7 is by means of further worms from the shaft of the electric motor 9. The gear 51 is supported on the blade root by means of an arm 32 and clamps. At the inner end of the blade root a nut 30 is used for taking up the thrust through the race 26.
Patent GB-798898-A (GB)
Title: Improvements in and relating to hackle and wing protector for fishing flies
IPC: A01K97/06
Filed: 1956-06-19
Abstract: 798,898. Fishing. WINTEMUTE, W. E. June 19, 1956, No. 18922/56. Class 48. A protector for the heckles 29 and wings 28 of an artificial fly while a leader is being attached to the eye 24 of the fly hook 23 consists of a conical hood 10 open at its base and with a hole at the apex through which hole, during the attaching operation the eye 24 projects. The hood is preferably of rubber or elastie plastic material with the apex hole of such size that it expands to allow the eye 24 to pass through and then grips the hook shank behind the eye and will expand sufficiently to allow the eye to pass therethrough so as to detach the hood from the fly. The cross-section of the hood is preferably elliptical but may also conveniently be circular or triangular.
Patent GB-1122688-A (GB)
Title: Form for use in constructing a floor or roof slab
Inventor: CADMAN KENNETH JOHN
IPC: E04G11/38
Filed: 1966-04-29
Abstract: 1,122,688. Floor shuttering. RAPID METAL DEVELOPMENTS Ltd. and TERSONS Ltd. 25 July, 1967 [29 April, 1966], No.18927/66. Heading E1S. A floor shutter has one or more pivoting side sections 14, and is supported on four extending props 12. If the sections 14 are required they are supported via angle-sectioned plates 15 attached to the edges thereof. A bogey 17 with lifting arms 18 which engage beneath cross-bracing 13 on the shutter is employed to move the shutter.
Patent GB-1329549-A (GB)
Title: Impact mills
IPC: B02C13/28
Filed: 1971-06-04
Abstract: 1329549 Impact crushers HAZEMAG HARTZERKLEINERUNGS-UND ZEMENTMASCHINENBAU-GmbH 4 June 1971 [12 June 1970] 18963/71 Addition to 1075726 Heading B2A In an impact mill as claimed in claim 14 of the Specification 1075726 the caps 8 which embrace the sides of the plates and cover the plate edges are adjustable towards the hammers and are lockable in their adjusted positions, e.g. by means of a self-lockable eccentric 14 mounted in the plates 1.
Patent GB-701333-A (GB)
Title: Improvements in or relating to tables
IPC: A47B31/04
Filed: 1951-08-13
Abstract: 701,333. Tables and frames therefor. MONDINEU, M. F. Aug. 13, 1951 [Aug. 12, 1950], No. 18973/51. Class 52(3) A table or stand comprises a vertical frame to which are pivoted at one or both sides a pair of flaps constituting table tops and the vertical frame having at each end pairs of supporting legs pivoted about vertical axes. As shown an open frame 10 has, at each side pivoted thereto, a pair of superposed flaps 14<SP>1</SP>, 14<SP>2</SP>, 15<SP>1</SP>, 15<SP>2</SP> connected together at each end by rods 16, 17, and supporting said flaps at each side is a pair of members 18, 19 pivoted at 18<SP>1</SP>, 18<SP>2</SP>, 19<SP>1</SP>, 19<SP>2</SP> to the frame 10. The members 18, 19 are provided with stops to support the flaps in the open position, the members 18, 19 being limited in their opening movement by brackets 26, 27 carried by the rods 16, 17. The members 18, 19 preferably are provided with castors 28, 29 and are at their upper ends provided with torsion springs 22, 23 so that as the flaps are pivoted upwardly to their closed positions against or inside the frame 10 the members 18, 19 automatically close towards one another and against the frame 10 while lowering the flaps to open position causes the members 18, 19 to move to their extended or open position. The open frame 10 may be replaced by a solid panel.
Patent GB-1072637-A (GB)
Title: Gasoline motor fuel
Inventor: LITTLE JOHN CLAYTON
IPC: C10L1/22
Filed: 1965-05-05
Abstract: A motor fuel composition comprises a major proportion of a gasoline that normally tends to promote stalling of internal combustion engines by carburetter icing and a small but effective proportion of a gasoline-soluble anti-icing additive having the formula <FORM:1072637/C4-C5/1> wherein R is a C6 to C24 hydrocarbon radical; m, n and p are 2, 3 or 4; and x and y are 0 to 40, their sum being 0 to 50; or a salt thereof. Preferably R is C14-C18 alkylphenyl, m is 2, x is 1 to 20, y is 0 and p is 3; numerous examples are given.  The proportion of additive may be 25 to 200 p.p.m.
Patent GB-190396-A (GB)
Abstract: 190,396. Yates, W., and Foster, R. March 13, 1922. Oil, catching.- A device for catching oil dripping from bearings &c. comprises a vessel A provided with a false bottom B sloping towards the centre and having one or more rows of perforations adjacent the bottom of the inclined aides. A filter may be associated with the device. To facilitate cleaning, the sloping sides B do not extend to the centre, but are turned over at b to form guides for slides C, the inner edges c of which are held by a clip c<1> and are provided with perforations c<2>. From the vessel A, the oil flows through a filter D comprising cotton waste D<1>, a perforated plate d and a wire gauze d<2>. Sediment collects in a recess d<3> and filtered oil is drawn off through a tap F.
Patent GB-191873-A (GB)
IPC: G07G1/00
Abstract: 191,873. O'Brien, Ltd., T., and O'Brien, E. H. Nov. 1, 1921. Tills.-A cash till is provided with a drawer for notes which is retained closed unless the changecontaining money-drawer is open. The notedrawer A<1>, Fig. 4, is fitted with a hook D<1> which is engaged by the projection b' on the moneydrawer B when the latter is in the closed position shown. The drawer A<1> may carry, or be arranged under, a window c' and is fitted with a spring-pressed false bottom a, which, in the construction shown, is connected by a cable b<3> to a fixed stop e. A perforated hinged lid g is raised by means of a spring g' when the drawer A is opened. The springs b for operating the bottom a may be replaced by a weighted lever. In the modification shown in Fig. 9, a hooked arm D' and a weighted lever D control the opening of a hinged cover C<1> and the notedrawer A' respectively, and are locked against operation by the money-drawer B when this is in the closed' position (shown). The note first placed in a receptacle A is transferred to the drawer A' bv a cranked lever K which is rocked about its pivot e<2> by a rocking lever L actuated by a lug b<4> on the drawer B. A spring k<2> serves to return the lever K on closure of the drawer B.
Patent GB-1463539-A (GB)
Title: Controllable voltage dividers
IPC: G01R15/09
Filed: 1974-05-02
Abstract: 1463539 Controllable voltage divider SIEMENS AG 2 May 1974 [4 May 1973] 19210/74 Heading H3H A controllable voltage divider comprises a multitapped resistor or inductance 3, connected to the voltage to be divided, and means to connect one of the tappings to an output Ua, said means comprising transistors Ts connected with emitter-collector path between tappings and output respectively, a high value base resistor for each transistor, a common, high value emitter resistor Ro and means for connecting a control voltage to one of the base resistors; the resulting emitter resistor voltage blocking the unswitched transistors. The base voltage is preferably applied by a switch (11, 13, 14) connected to either common voltage M or a positive voltage. The output voltage may be amplified (Tsa) and capacitors 2, 12, 16 may be supplied for use with an A.C. voltage. In an alternative embodiment, the emitter collector junctions may be reversed and the emitter resistor, preferably with a series choke connected between Ua and M.
Patent GB-681938-A (GB)
Title: Improvements in and relating to containers for radioactive substances
Inventor: FISHER CYRIL
IPC: A61N5/10
Filed: 1950-08-01
Abstract: 681,938. Protective containers for radiation sources. HALL & CO., Ltd., M. Aug. 1, 1951 [Aug. 1, 1950], No. 19238/50. Class 98 (i). [Also in Group VI] A container for radioactive substances, e.g. radioactive isotopes, comprises a "bomb" 1 and plug 10 made of screening material such as lead, and is provided with a plug-removing device including a shaft 12 connected to the plug and movably mounted on the container, and means for moving the shaft longitudinally and turning it about its axis. Hand wheel 15 moves the shaft longitudinally and when the plug has been removed it is swung aside by means of lever 18 which slides in slots 19 connected at 20. The shaft 12 may also be moved by hydraulic, pneumatic, or electrodynamic means. The radioactive material is carried by a clip 21 at the end of a sliding tube 22 and is moved forward to operative position after the plug has been removed. Movement of the tube 22 is regulated by spring 25, catch 26<SP>1</SP> and remote-control cable 27. The container is mounted on a stand or trolley 29 and may be raised or lowered, or moved into horizontal or vertical position. The device may be used in industrial radiography or for radiotherapy, and provides protection for the operator.
Patent GB-662710-A (GB)
Title: Improvements in and relating to weight shifting compensating arrangements for electric vehicle trucks
IPC: B61F3/06
Filed: 1949-07-21
Abstract: 662,710. Rail vehicle undercarriages. BRITISH . THOMSON-HOUSTON CO., Ltd. July 21, 1949 [July 21, 1948], No. 19242/49. Class 103(vi) An axle truck has axle-hung motors 22 having nose portions 23 supported on cross members 24 spring mounted on cross yokes 26 which engage fore-and-aft extending equalizers 27 pivoted at 28 to the truck frame. The ends of the equalisers 27 are connected by links 29 to one end of the leaf spring arrangements 30. With this arrangement the turning moment exerted by the motors is balanced by an increased downward force on the axle boxes and wheels thereby preventing slip.
Patent GB-474969-A (GB)
Title: Improvements in and relating to pistons for internal-combustion engines
IPC: B03C7/02
Filed: 1937-07-12
Abstract: 474,969. Pistons. JUNKERS FLUGZEUG - UND - MOTORENWERKE AKT.- GES. July 12, 1937, No. 19273. Convention date, Aug. 24, 1936. [Class 122 (i)] In a piston having a crown plate 2 of a metal of lower heat conductivity, the plate, which makes contact with the piston body in a marginal zone only, has a flat marginal portion 2a and a central dome 2b of less thickness. The crown is secured by bolts 3 extending through ribs 16 in the body, the under side of each bolt head and its seating surface being of spherical form. The plate and the piston body may be formed with recesses in the contacting faces to reduce the heat conducting surface to a minimum. Specification 356,599 is referred to.
Patent GB-1088385-A (GB)
Title: Improvements in the manufacture of gusset bags
Inventor: BARON ARTHUR JAMES
IPC: B65D30/20
Filed: 1965-05-07
Abstract: 1,088,385. Gusset bags. BIBBY & BARON (HOLDINGS) Ltd. April 13, 1966 [May 7, 1965], No. 19282/65. Heading B8K. A blank, Fig. 1 (not shown), for forming a gusset bag, is provided on one edge with opposed double steps 11, 13, and 15, 17, forming a twostage flap, which, after folding the blank into a tube with an overlapping glued seam, is folded about a line adjacent the line 10, 18, and secured by adhesive. The gussets are thus also adhered and are less susceptible to being sprung. The adhesive may be applied to the flap by a single broad roller, or by a number of narrow rollers. The blank may be cut from a roll by a shaped knife.