baber/WOPTO huggingface dataset:
Patent GB-172106-A (GB)
Title: Improvements relating to medical and surgical apparatus
IPC: A61G7/10
Filed: 1920-08-30
Abstract: 172,106. Burton, H. C. Aug. 30, 1920. Surgical, operating, &c. tables.-Apparatus for temporarily raising any part of a patient's body above the level of the bed &c., comprises essentially a rigid base 2 and a rigid or flexible supporting element 1, the device when collapsed being readily introduced beneath the patient. In one form, the base 2 carries four pivoted arms 3, a rotary spindle with right and left hand screw threads 8, 9, and arms 12 the upper ends of which support a band of leather, webbing &c. 1, while the lower ends are carried by nuts 10, 11 on the screw threads, the arms 2, 3 being pivoted together at 13. In a modification, the base may be a flat piece of wood 16 with a hinged extension 17 to which is attached the webbing, &c. 1, the other end being attached to the base 16. The slack of the webbing is taken up by operating a shaft 23 on which is an arm 22 by means of a worm wheel 25 and worm 26. The worm gear may be replaced by screw and nut mechanism and a tilting frame may be used in place of the hinged extension 17.
Patent GB-621632-A (GB)
Title: Improvements in or relating to electric power cables
IPC: H01B13/10
Filed: 1946-08-23
Abstract: 621,632. Electric cables. STANDARD TELEPHONES & CABLES, Ltd., and LEE, E. C. Aug. 23, 1946, No. 25224. [Class 36] An electric cable has insulating wrappings 2 (preferably of paper) applied longitudinally in strips of such a width that there is a gap between the edges of each strip, successive strips being applied so that the gaps do not coincide. The central conductor 1 is supplied with strips 3 of insulation from rolls 4. The insulation is lapped around the conductor by. means of dies 6. An outer conductor 7 of soft copper tape is applied in the same manner as the insulation, the edges of which may meet or overlap if desired. Holes may be provided in the outer conductor to allow subsequent impregnation. Further insulation 10 and a lead sheath 11 complete the cable. The paper wrappings 3 and the soft copper conductor 7 may be applied with a helical lay of more than six inches. Specification 603,738 is referred to.
Patent GB-1465903-A (GB)
Title: Liquid fuel pumping apparatus
IPC: F02M41/08
Filed: 1973-05-25
Abstract: 1465903 Fuel injection pumps CAV Ltd 16 May 1974 [25 May 1973] 25245/73 Heading F1A In a rotary distributer fuel injection pump having a distributer member 11 including a delivery passage 13, 14 containing a delivery valve 17, the valve comprises an axially movable valve element 18 loaded towards a closed position by a spring 19, a restricted passage 23 passing through the valve element, and a valve ball 26 for closing the restricted passage 23. During delivery pump working chamber pressure in the passage 13 moves the valve element 18 to a position in which communication is established with the passage 14 through an axial passage 20 and parallel flow paths provided by the restricted passage 23 and a peripheral groove 22 in communication with the axial passage 20 via transverse ports 21.
Patent GB-470729-A (GB)
Title: Improvements in or relating to electric amplifiers
IPC: H03F1/36
Filed: 1936-09-17
Abstract: 470,729. Valve amplifying circuits. TELEFONAKTIEBOLAGET L. M. ERICSSON. Sept. 17, 1936, No. 25331. Convention date, Sept. 19, 1935. [Classes 40 (iii) and 40 (v)] To prevent excessive phase shift in an intervalve coupling and to reduce the liability to self-oscillation of the amplifier, the anode impedance and the grid impedance are divided into sections A1 ... A4, G1 ... G4, Fig. 1, and coupling impedances K1 ... K4 are connected between corresponding junctions. The impedances K1 ... K4 may be capacities or series arrangements of capacity and inductance, and their impedance values decrease towards the earth end of the anode and grid impedances. Preferably the impedances A1 ... A4 also decrease in that order. The coupling prevents the phase shift between anode and grid from approaching 90‹ even at low frequencies. In Fig. 3 only two sections are used, and the couplings K1, K2 comprise series arrangements of capacity and inductance. The section A2 of the anode impedance comprises a portion Ra shunted by a coil L, and a portion Rb shunted by a condenser C. Together these are made equivalent to a pure resistance by making Ra equal to Rb equal to the square root of the ratio of L to C. Three stages of amplification are shown with a negative back-coupling from the anode of the valve E3 to the grid of the valve E1 through a condenser Cr and a resistance Rr. A resistance Ru is inserted between the anode of valve E3 and the output transformer Tu and a resistance Ri between the grid of the valve El and the input transformer Ti. The Specification includes vector diagrams illustrating the phase shift in the coupling throughout a frequency range.
Patent GB-1427873-A (GB)
Title: Solenoid powered brake pressure modulator
IPC: B60T8/44
Filed: 1974-06-07
Abstract: 1427873 Brake pressure modulators C ADAHAN 7 June 1974 [8 June 1973] 25389/74 Heading F2F A brake pressure modulator is operable in response to signals signifying a wheel lock condition and the end thereof comprises a housing 20 having a fluid inlet port 22, a fluid outlet port 46 and a port 26 connected in use to a master cylinder 12, a wheel cylinder 14 and a reservoir 30 respectively, a valve arrangement for relieving fluid pressure from the outlet port 46 to the port 26 in response to a first signal indicating a wheel lock condition, a pump arrangement delivering fluid under pressure to the outlet port in response to a second signal indicating end of the condition and a solenoid 42 for operating the valve arrangement and the pump. Port 22 communicates with parallel chambers 32, 34 of which chamber 32 communicates with a bore 36 in which a piston 38 may reciprocate under the influence of solenoid 42. Bore 36 communicates with the port 46 via a passage 44 closed by a ball valve member 50 and another ball element 66 is disposed in chamber 32. Chamber 34 connects with port 46 by way of a valve passage 60 and valve 62. During normal brake operation fluid passes from the master cylinder via valves 66, 50 to the wheel cylinder. Upon the approach of wheel lock a signal energizes solenoid 42 which retracts piston 38 forming a seat for one end of the spring 70 affecting ball 66 so that the latter closes on its seat 68, the volume of the chamber formed in bore 36 being increased so that the wheel cylinder fluid can bleed through passages 86, 88, uncovered by retraction of the piston, to a passage 82 and via port 26 to the reservoir, releasing the brakes. After the second signal is received a pulse generator applies rapid pulsations to the solenoid so that piston 38 reciprocates and pumps fluid back to the wheel cylinder to re-apply the brakes. In a modification, Figs. 2, 3, not shown, valve 76 in the reservoir passage is operated by a separate solenoid instead of using passage 86.
Patent GB-1216018-A (GB)
Title: Process for the production of vinyl acetate
Inventor: KRONIG WALTER
IPC: C07C69/15
Filed: 1968-05-28
Abstract: 1,216,018. Vinyl acetate. FARBENFABRIKEN BAYER A.G. 28 May, 1968 [4 July, 1967], No. 25390/68. Heading C2C. Vinyl acetate is prepared from ethylene and oxygen by reacting ethylene, oxygen and acetic acid, formed during the process, at 50-300‹ C. and at normal or elevated pressures in the presence of a catalyst containing an elementary noble metal. The reaction product is separated into a gas and liquid phase consisting of vinyl acetate, acetic acid and water. The condensed components are heated in the liquid phase to 100-300‹ C., the acetaldehyde formed is oxidised to acetic acid which is used for the reaction with ethylene and oxygen to form vinyl acetate.
Patent GB-1149196-A (GB)
Title: Petroleum recovery materials and process
Inventor: GOGARTY WILLIAM BARNEY
IPC: E21B43/16
Filed: 1966-06-07
Abstract: 1,149,196. Secondary recovery. MARATHON OIL CO. 7 June, 1966, No. 25401/66. Addition to 1,058,974. Heading E1F. Oil is recovered by injecting into at least one injection well a solution of a surfactant in liquified petroleum gas (LPG) or a microemulsion with LPG as the external phase, driving the liquid towards the 'recovery well and recovering crude petroleum therefrom.
Patent GB-890253-A (GB)
Title: Improvements in or relating to regulated electric power supply equipments
Inventor: PEASE WILLIAM EDWARD
IPC: G05F1/33
Filed: 1959-07-24
Abstract: 890,253. Automatic control systems. STANDARD TELEPHONES & CABLES Ltd. July 22, 1960 [July 24, 1959], No. 25468/59. Class 38 (4). [Also in Group XXXIX] Battery-charging equipment is supplied from the secondary winding 10 of a mains transformer and includes a saturable reactor having main windings 1, 2, associated with rectifiers 3, 4. When the load current reaches a predetermined value, a Zener diode Z2 breaks down to allow the passage of reverse current through the winding that is not carrying the main current at the time, thereby tending to de-saturate the reactor and increasing the voltage-drop across it. Auxiliary windings TDR1-11, TDR1-12, on the reactor develop a positive reference effect and a negative feedback effect, the reference winding being stabilized by diode Z1 whilst the feed-back winding is energized in proportion to the output voltage. As the output voltage falls due to excessive loading, rectifier C passes current, so reinforcing the current in winding TDR1-12 and reducing the reference current. This enables the diode Z2 to provide a sharper drop of output voltage on overload.
Patent GB-958098-A (GB)
Title: Method for retarding a deposition of coke in petroleum furnaces
IPC: C10L1/28
Filed: 1962-07-03
Abstract: Coke deposition in petroleum cracking furnaces is decreased by adding 0.1 to 100 parts per million of a polymethyl siloxane to the petroleum prior to heating in the cracking furnace.  The siloxane is added either as a liquid or solution.  The substituents of the siloxane may be either all methyl, or methyl and hydrogen or hydrocarbon radicals.
Patent GB-287410-A (GB)
Title: Improvements in or relating to signalling devices for motor driven vehicles or the like
IPC: B60Q1/34
Filed: 1927-09-27
Abstract: 287,410. Robinson, C. J. A. Sept. 27, 1927. Road - traffic signals on vehicles.-A signal member A is rotatable about a horizontal axis A<2> on a frame or bar B, which projects into the vehicle and is itself rotatable about a vertical axis. The bar B is adjustably mounted in a block B<1> rotatably supported by a bracket E, and may extend through a slot in the side of the vehicle. A handle C rotates the bar B directly and the signal A through a chaindrive D, an indicator member H being similarly operated.
Patent GB-1041915-A (GB)
Title: Sealing connexions for conduits
Inventor: WATERLOW DEREK KENNETH
IPC: F16L39/04
Filed: 1964-06-19
Abstract: 1,041,915. Pipe &c connections. CONCH INTERNATIONAL METHANE Ltd. June 19, 1964, No. 25532/64. Heading F2G. In a sealing connection between a non- rotating conduit 1 and a wall 2 of a container, the pressure in which is superatmospheric and wherein the portion of the wall to be connected to the conduit must be free to undergo rotary movement about the centre 31 of an aperture in said portion of the wall, a flexible metal sleeve 15 is sealingly joined to the wall so as to enclose the aperture and also sealingly joined to the conduit about the perimeter thereof. A load-bearing surface supports the sleeve against excess pressure exerted thereon, the coefficient of friction between the surface and sleeve being low enough to allow relative rotary displacement therebetween without rupture of the sleeve. Several embodiments are described.
Patent GB-1516676-A (GB)
Title: Sound absorbing screen
IPC: E01F8/00
Filed: 1975-06-16
Abstract: 1516676 Sound absorbent screen for roads SOC D'ETUDES GENERALES DE CONSTRUCTIONS INDUSTRIELLES ET CIVILES 16 June 1975 25635/75 Heading E1G A sound absorbing screen disposed between a building I of length l and an elongate sound source such as a road comprises a continuous wall portion 1 having a length l+2d located at a distance D from the furthest point of the building, and a plurality of spaced apart posts 2 aligned with the wall portion 1, the posts having a length a and a width b respectively parallel and perpendicular to the sound source, and the spacing between the n<SP>th</SP> and (n-1)<SP>th</SP> part being at most equal to dp<SP>n</SP>+(a-d)p<SP>n-1</SP> where p=D/D-b, whereby all rectilinear paths between the sound source and the building are obstructed by the posts. To protect tall buildings the continuous wall may be part of a tunnel and the posts parts of arches over the road. The posts may be made of prestressed concrete, light alloy, plastics material or plywood, and may have the side facing the building covered by sound absorbent material, or alternatively may be formed hollow from perforated metal sheet and filled by sound absorbent material.
Patent GB-1498169-A (GB)
Title: Manipulator
IPC: F16H21/04
Filed: 1976-06-21
Abstract: 1498169 Linkwork SHIROYAMA KOGYO KK 21 June 1976 25751/76 Heading F2K [Also in Division B8]  A manipulation arm, used in forge press working or die cast working etc. for gripping and transferring workpieces, comprises two equal length arms 5, 9 the first arm 5 of which is pivotally mounted at one end about the axis of coaxial driving shafts 3a, 4a, on a structure 1, 2 and pivotally connected at its other end via a pin 10 to one end of the second arm 9 the other free end of which pivotally carries via a pin 18 a swivable head 16 having an air suction cap gripper 21. Independent driving motors 3, 4 simultaneously or selectively drive the shafts 3a, 4a, shaft 3a being drivingly keyed fast with the first arm 5 whilst the shaft 4a passes freely through the arm 5 and is drivingly keyed to a first sprocket 6 which is connected via a chain 12 to a second sprocket 11 fast on the pivot pin 10 which is keyed fast to the second arm 9 and freely pivotal in the first arm 5. In addition, connecting rods 8, 15 of equal lengths corresponding to the length of the arms 5, 9 are connected between a fixed pin 7 on the structure 2 via crank hubs 13, 19 pivotally mounted on the pivot pins 10, 18, to a pin 20 on the swivable head 16, the arrangement of the two connecting rods 8, 15 constituting a parallelogram linkage whereby during relative pivotal movement of the arms 5, 9 the head 16 and its associated gripper suction cap 21 are always maintained (i.e. unchanged) at a horizontal orientation. As shown, the sprockets 6, 11 are in the ratio of 2 to 1 to form a straight line motion mechanism, whereby with the motor 3 driving through shaft 3a and the motor 4 inoperative holding sprocket wheel 6 stationary, the arrangement is such that as the arm 5 turns the chain 12 wraps around the larger sprocket 6 to turn the smaller sprocket 11 twice the angular amount in the opposite direction such that the head 16 and gripper 21 move in a straight line motion, i.e. C to B &c. in Fig. 4. If at any position it is required to move the gripper head 16 from the straight line path the second motor 4 may be operated to drive the shaft 4a and via the sprockets 6, 11 and chain 12 turn the second arm 9 from B to A &c. (Fig. 4). By having sprockets 6, 11 of different ratios other than 2 to 1, movement paths of the head 16 and gripper 21 other than straight line motion may be accomplished by operation of the driving motor 3 alone, the second motor 4 always enabling movement of head 16 and grippers 21 from such path simply by operating the second motor 4 either separately from or simultaneously with the motor 3 to additionally drive and turn the second arm relative the first arm via the chain and sprockets 12, 6, 11.
Patent GB-281060-A (GB)
Title: Improvements in or relating to thermionic cathodes
IPC: H01J9/04
Filed: 1926-10-15
Abstract: 281,060. M-O Valve Co., Ltd., and Thompson, M. Oct. 15. 1926. Vacuum tubes.-A thermionic cathode has a support, for example of platinum, provided on the surface with an active layer of an alkaline earth metal such as barium in the unoxidized state, or an alloy of alkaline earth metal with the material of the support, by heating the support in the vapour of the alkaline earth metal. In one process a platinum filament is heated to 1520‹ K in a bulb from which oxygen is excluded, and a discharge is passed between the filament and another electrode coated with barium azide. In another process oxygen is admitted at a pressure of a few hundredths of a millimeter to a tube having a tungsten filament, which is heated to 1500‹-1550‹ K, the oxygen being subsequently evacuated and the filament maintained at that temperature for several minutes. It is stated that the filament is not oxidized by this process, but is covered with a monatomic layer of oxygen. Barium is deposited on the oxygen by the method described previously. A second monatomic layer of oxygen may be formed on the barium coating by admitting oxygen to the tube with the filament cold, a second coating of barium being then deposited. This process may be repeated a number of times so as to obtain alternate layers of monatomic oxygen and barium.
Patent GB-1312974-A (GB)
Title: Process and catalyst for dimerization of alpha-olefins
IPC: C07C2/36
Filed: 1970-05-28
Abstract: 1312974 Dimerisation catalysts T O Y O SODA MFG CO Ltd 28 May 1970 [29 May 1969 14 Jan 1970] 25812/70 Heading B1E [Also in Division C5] Dimerisation catalysts comprise a trialkylaluminium or dialkylaluminium hydride, each alkyl radical having 2-6 carbon atoms; a titanate Ti(OR) 4  where R is a C 6-11  aryl radical or a C 1-8  alkyl radical; and an organic phosphorus compound (R<SP>1</SP>Z) (R<SP>2</SP>Z) (R<SP>3</SP>Z)P or R<SP>1</SP> R<SP>2</SP> R<SP>3</SP> P wherein each of R<SP>1</SP>, R<SP>2</SP>, R<SP>3</SP> is H or an alkyl, aryl, aralkyl or alkaryl radical or a derivative thereof and Z is O or S, there being 1.0-20.0 moles of organoaluminium compound per mole of titanate. Many examples are given using a variety of compounds for the three components.
Patent GB-793514-A (GB)
Title: Process for the preparation of ª†-2:4-dichlorophenoxybutyric acid and derivatives thereof
Inventor: HEYWOOD BASIL JASON
IPC: C07C59/68
Filed: 1954-09-09
Abstract: Gamma - (2 : 4 - dichlorophenoxy) - butyric acid is made by heating an alkali metal salt of 2 : 4-dichlorophenol with butyrolactone under substantially anhydrous conditions.  The reaction is suitably carried out by treating the corresponding phenol with aqueous alkali, removing the water by co-distillation with an entrainer liquid, adding butyrolactone to the resulting mixture of alkali metal phenoxide and entraining liquid, removing the entrainer by distillation and heating the residue at a temperature above 140 DEG C., preferably at 140-210 DEG C. to complete the reaction.  The reaction may also be carried out by heating a mixture of the phenol in aqueous alkali with butyrolactone and the entrainer to successively distil off the azeotrope and the entrainer, whereafter the temperature is raised to that required for reaction between the phenoxide and butyrolactone.  Suitable entraining liquids include chlorobenzene, white spirit, o-dichlorobenzene and xylene, the preferred liquids being alcohols boiling in the range 100-200 DEG  C. such as n-butanol.  The reaction between the alkali metal phenoxide and the butyrolactone may also be carried out continuously by passing the reactants, optionally under pressure, through a heated tube.  The free acid may be isolated from the alkali metal salt obtained as reaction product, by known methods.  The products are used as selective herbicides.
Patent GB-687575-A (GB)
Title: Electric tapchanging switch for regulating transformers
IPC: H01F29/04
Filed: 1949-10-10
Abstract: 687,575. Regulating switches. SMIT & CO.'s TRANSFORMATOREN FABRIEK N.V., W. Oct. 10, 1949 [Oct. 8, 1948], No. 25984/49. Class 38 (v) A transformer tapchanging switch comprises a pair of movable contacts connected by an impedance, one of the contacts being directly connected to the output line. On tapchanging the contacts move one after the other and central means are provided to make their order of movement dependent on the direction of the electrical energy, whereby contact wear is made uniform regardless of the direction of energy and of tapchanging and is minimised. The theory underlying the arrangement is given in the Specification. The moving contacts 5, 6, Fig. 3, connected by an impedance 7 and co-operating with contacts 1 ... 4, 1<SP>I</SP> ... 4<SP>I</SP>, connected to the transformer taps, are driven by Maltese Crosses 16, 14, respectively, rotated by carriers 13, 15. The carriers 13, 15, are driven through concentric shafts 18, 17, respectively, Fig. 4, by pinions 19, 20. A differential mechanism comprising sun wheels 23, 24, and planet wheels 25, 26, drives the pinions 19, 20, the gear ratio between wheels 24, 19, and 23, 20, being the same. An additional gear 21 interposed between the wheels 24, 19 causes the latter to rotate in the same direction as the pinion 20. The switch operating shaft 22 fixedly carries the wheel 23 and freely supports the planet carrier 28 and the wheel 24. The carriers 13, 15 are caused to lead or lag with respect to one another according to the energy direction by means of a relay which, on reversal of the energy direction, rotates a carrier 30 on a shaft 27 through 360 degrees whereby a Maltese Cross sector 29 connected to the planet carrier 28 moves the latter, and since the shaft 22 and wheel 23 are held stationary, wheels 24, 21, 19, rotate and the carrier 13 is moved through 180 degrees with respect to the carrier 15. For a given energy direction, the carrier 13 or 15 which leads in one direction of rotation of the shaft 22, lags upon reverse rotation of the latter. The Specification includes a table of figures of the currents made and broken by the contacts 5, 6, and compares these figures with those of known switching arrangements.
Patent GB-1414163-A (GB)
Title: Slurry moving apparatus
IPC: A01K1/01
Filed: 1972-06-03
Abstract: 1414163 Scraper apparatus JOHN H TAYLOR Ltd 31 May 1973 [3 June 1972] 26007/ 72 Headings E1F and E1G [Also in Division A4] A flexible scraper blade 9 (e.g. of rubber) is rigidly secured to a carrier 8 which is pivoted to a frame 1, 3 for connection to a tractor whereby the working face of the blade is presented towards the direction of movement for both foreward and reverse movement of the frame. The blade is locked in position by a spring-loaded arm 10 engageable in slots in a bar 11 secured to the blade. To reverse the blade, the arm 10 is disengaged, the frame 1, 3 is lifted and the tractor is driven forewards; this causes the blade to rotate about a horizontal axis.
Patent GB-203201-A (GB)
Title: Anti-spilling constructions for electric batteries
IPC: H01M50/35
Filed: 1922-09-26
Abstract: 203,201. Hardy, C. R., and Hart Accumulator Co., Ltd. Sept. 26, 1922. Gas exits.-A gas exit which is situated above the level of the electrolyte in all positions of the battery cell consists of a chamber 3 communicating with the atmosphere through a tube 4 and with the interior of the cell through a tube 6 flush with the under surface of the chamber 3. An opening 5 which may consist of a tube flush with the bottom of the chamber 3 allows any liquid in the chamber to flow back into the cell. The tubes 4 and 5 may be closed at the bottom but provided with lateral openings. The tube 4 may project above the cell and be fitted with a rubber vent plug, or it may be closed at the upper end and provided with lateral openings. Baffles may be provided within the chamber 3, or a baffle 7 of the shape shown in Fig. 3 may be cemented by means of a cross-bar 8 on to the outside of the base of the chamber. The baffle may alternatively consist of a curved sheet of celluloid &c. cemented to the base of the chamber.