baber/WOPTO huggingface dataset:
Patent GB-349919-A (GB)
Title: Improvements in the manufacture of compressed friction material
IPC: F16D69/02
Filed: 1930-01-27
Abstract: A friction lining is formed by mixing fibrous asbestos and hardenable binder into a readily malleable mass which is extruded through a die producing a continuous unlaminated strip of the cross section desired surface-troweled on all sides by the action of the die and with the fibres in the interior running in all directions, drying the product thereby producing a flexible porous mass of somewhat greater thickness than that of the completed article and compressing and hardening this to the shape desired. The ingredients used may be 10 lbs. rubber, 46 lbs. asbestos fibre, 4 lbs. magnesium carbonate, 10 lbs. litharge, 25 lbs. barytes, 5 lbs. sulphur and a rubber solvent, which are mixed in a dough mixer and formed into a strip by extruding through a rectangular opening which causes the fibres at the surface to lie lengthwise.  The strip is dried and passed through pressing rolls. A woven asbestos-covered wire fabric may be added, the strip being forced into its interstices so as to leave the fabric exposed on one surface.  The strip is then compacted and soft-vulcanized or "press-cured" to such an extent that it can be handled.  This is done in a "follower" which exerts a pressure of 1000 or 1500 lbs. and is heated.  The strip is bent into the desired form and vulcanized to the desired hardness, the heat being gradually applied and then ground on one or both sides.  The strip may in the soft vulcanized state be wound on itself in convolutions and then hard-vulcanized to a permanent but somewhat resilient set in convolute form whereby sections therefrom approximate the curve of a number of different brake drums or shoes as described in Specification 347,278.  The material may be used in clutches.
Patent GB-1510071-A (GB)
Title: Assay method for paracetamol
IPC: G01N33/94
Filed: 1976-02-05
Abstract: 1510071  Paracetamol determination STERLING WINTHROP GROUP Ltd 4 Feb 1977 [5 Feb 1976] 04489/76 Heading G1B In an assay method for paracetamol in blood, a blood sample is deproteinized and the deproteinized layer of liquid separated off, reacted with excess nitrous acid and made alkaline so that paracetamol present will give the sample a yellow colour, the intensity of which is a measure of the paracetamol concentration.
Patent GB-123760-A (GB)
Title: Improvements in the Production of Nitrogen Compounds containing Hydrogen with Aid of Electric Discharges.
IPC: C01C3/02
Filed: 1919-02-22
Abstract: 123,760. Gros et Bouchardy, F., (Assignees of Briner, E., and Baerfuss, A.). Feb. 25, 1918, [Convention date]. Void [Published under Sect 91 of the Act]. Ammonia; ammonium cyanide; hydrocyanic acid.-The synthesis of ammonia, ammonium cyanide, and hydrocyanic acid by means of the action of electric arcs, sparks, or silent discharges on mixtures such as nitrogen and hydrogen; nitrogen and hydrocarbons; nitrogen, carbon monoxide and hydrogen, nitrogen and water gas; producer gas and hydrogen; and illuminating gas and nitrogen; is effected under a pressure less than 200 m.m. of mercury. An excess of nitrogen may be employed, and when carbon compounds are used, hydrogen may be added to avoid the production of soot. The electrodes and armatures may be cooled, and the gases may be cooled immediately after the electrical treatment,
Patent GB-467288-A (GB)
Title: Improvements in and relating to pumps
IPC: F04B43/12
Filed: 1936-02-14
Abstract: 467,288. Flexible-tube pumps. BENNETT, C. G. M. Feb. 14, 1936, No. 4540. [Class 110 (ii)] A tube 5 is pinched through the action of a rotor 1 which carries ball-bearings 4 in radial slots 7, and pumps fluid from an inlet 8, to an outlet 10. A flexible band 6, preferably of leather is kept in position around the rollers, which are adjustable in the slots 7. A transparent cover 9 prevents the band from slipping off the rollers. The support 13 may be flexible.
Patent GB-1277691-A (GB)
Title: Improvements in and relating to pneumatic tyres
IPC: B60C11/11
Filed: 1970-01-30
Abstract: 1277691 Tyre treads MICHELIN & CIE (COMPAGNIE GENERALE DES ETABS MICHELIN) 30 Jan 1970 [30 Jan 1969] 4682/70 Heading B7C  A pneumatic tyre comprises two circumferential rows of circumferentially-elongated tread blocks 3, 3<SP>1</SP>, lying to either side of the midcircumferential plane XX<SP>1</SP>, and each flanked by a row of transversely-elongated tread blocks 1, 1<SP>1</SP>, 2, 2<SP>1</SP>, the blocks 3, 3<SP>1</SP>, having their ends closer to the plane XX<SP>1</SP> than their centres, and each block 3, 3<SP>1</SP> in one row overlapping circumferentially the gap 4<SP>1</SP>, 4, respectively, between two  successive blocks in the other respective row of blocks 3<SP>1</SP>, 3, and wherein the ends (of the transverse blocks) lying closest the plane XX<SP>1</SP>, are at the same distance from the nearest block 3, 3<SP>1</SP>, and overlap circumferentially the gaps 4, 4<SP>1</SP>, between corresponding successive blocks 3, 3<SP>1</SP> All the blocks, and the grooves between the various blocks, are of the same width, and the grooves are from 1/3 to ¢ the width of the blocks. The transverse blocks may have their end portions which are furthest from the plane XX<SP>1</SP> angled from 60 to 70 degrees the plane, both rows having blocks with angles in the same or opposite sense, see Fig. 3 (not shown), or the transverse blocks may be oblong (not shown). The transverse and angled portions of successive transverse blocks are alternately long and short. All the blocks have the same road-contacting area.
Patent GB-625943-A (GB)
Title: Improvements relating to the manufacture of tubes of glass and other thermo-plastic materials
IPC: C03B23/047
Filed: 1947-02-18
Abstract: 625,943. Moulding tubes from thermoplastic material. EVERETT, S. J. Feb. 18, 1947, No. 4721. [Class 87 (ii)] [Also in Group XXIII] Relates to apparatus for forming accurately-dimensional bores in thermoplastic tubing wherein lengths of raw tube are heated adjacent to a mandrel and are drawn over the mandrel while the latter is rotated and/or reciprocated. The process is generally similar to that of Specifications 547,880, [Group XXIII], and 610,182 wherein limited lengths of tube are produced, but the apparatus is arranged so that (a) any length of tubing may be produced by joining a new length of raw tube on to 'the length undergoing treatment, and (b) the machine may work continuously, or substantially so, instead of intermittently. A cut length of tube 6, Fig. 1, which is positioned on the mandrel 8, Fig. 8, the nose of which is within a small furnace 5, Fig. 1, is fed forward by two sets 10, 11 of three driven rollers 12. The rollers of the front set 10 are driven faster than those of the rear set and an infinitely variable speed arrangement 22, 23, 24 is provided to control the speeds of the front set and of the first shaft of the drive to the second set, a further infinitely variable speed arrangement 36, 37 being provided to control the speed of the rear set only. Means for creating a vacuum in the tubing are also provided. Feature (a) is arranged for by providing an easily detachable coupling at the rear of the mandrel for connection to a comparatively long mandrel operating rod. The new length of raw tube is placed over the rod when the coupling is disconnected and, after re-coupling, this length is pushed forward until its front end contacts with the rear end of the length already in the , machine. and becomes welded thereto in a welding device 109. Feature (b) is arranged for by having two mandrel operating rods 49A, 49B, Figs. 3 and 8, which are coupled to the mandrel 8 alternately, a new length 6B of raw tube being threaded over that rod, e.g. 49B, Fig. 8, which is uncoupled whilst the other rod is coupled up. The rods are mounted in front and rear supports 90, Figs. 3 and 8, 57, Fig. 3, swingable about a shaft 85 and each rod carries gear wheels 65A (slidably splined), 66A (loose) and cams 68 (secured to gear 66A) and 70 (fast) and, on swinging the supports 57, 90, one or other of the gears 65A, 66A, of one of the rods becomes engaged with a driver 81. The driver is slidable along its shaft 80 and (according to its position, in conjunction with the selective operation of a lock 87A acting on one or other or neither of the gear wheels) produces a reciprocation and/or rotation of the rod. The machine is thus stopped only for the time taken to uncouple 98, Fig. 8, swing the supports 57, 90, and to recouple 98 but even this stoppage can be avoided by providing means for temporarily operating the mandrel during the change-over. Means 91A, 91B, 99 are also provided to hold the ends of the rods 49A, 49B and of the mandrel during the change-over.
Patent GB-856144-A (GB)
Title: Servo valve with pressure repeating power amplification
IPC: F15B13/043
Filed: 1957-02-12
Abstract: 856,144. Fluid-pressure servomotor control systems. MOOG SERVOCONTROLS Inc., [formerly MOOG VALVE CO. Inc.]. Feb. 12, 1957 [Feb. 13, 1956], No. 4753/57. Class 135. A valve suitable for controlling an hydraulic servomotor 20 comprises a spool 21 under the control of a first hydraulic arrangement which responds to a control input and produces an output pressure differential to which a second hydraulic arrangement responds to apply an equivalent differential to the ends of the spool. The first hydraulic arrangement, in the embodiment described, consists of a movable flapper 33 coacting with a pair of nozzles 34, 35 and mounted in a flexible tube 37 for operation by electromagnetic input means 31, any deflection of the flapper from a neutral position resulting in a change of hydraulic pressure on the upstream side of the nozzles. The nozzles are connected through conduits 38, 39 and restrictions 41 with a conduit 40 leading from a pressure supply connection 15, and conduits 48, 48a lead from the conduits 38, 39 between the restrictions and the nozzles to chambers in the second hydraulic arrangement which consists of a pair of valve members 47. Each of these valve members consists of a pair of lands controlling ports 49, 50 and an intermediate, reduced portion connected by a passage 56 with a chamber at the end of the valve member remote from the connection with the corresponding nozzle. Each port 50 leads to a drain connection 16 and each port 49 leads to the pressure supply 15. The main spool 21 is centralized by springs 25 one of which is adjustable by a screw 26. When the flapper 33 is deflected the pressure on the upstream side of one of the nozzles increases to move the corresponding valve member 47 outwardly whilst the pressure on the upstream side of the other nozzle is reduced to cause the corresponding valve member 47 to move inwardly. The valve member 47 that moves outwardly connects a corresponding chamber 27 at one end of the spool 21 with pressure fluid through the port 49 and a passage 53 whilst the other valve member 47 connects a chamber at the other end of the spool 21 to drain. The changes in pressures in the chambers 27 are transmitted through the passages 56 to chambers at the outer ends of the valve members 47 whereby these members are returned to their neutral positions when the pressures in the chambers 27 correspond with those on the upstream sides of the nozzles 34, 35 resulting in the spool 21 being deflected by an amount related to the value of the electrical signal fed into the input means 31. Specification 854,287 is referred to.
Patent GB-1406356-A (GB)
Title: Process for producing halogenated silicon compounds
IPC: C08G77/38
Filed: 1973-01-31
Abstract: 1406356 Halohydrocarbyl-substituted silicon compounds IMPERIAL CHEMICAL INDUSTRIES Ltd 21 Jan 1974 [31 Jan 1973] 4766/73 Headings C3S and C3T Organosilicon compounds having at least one group XR- (where X denotes halogen other than fluorine and R denotes a divalent hydrocarbon group) attached to silicon are prepared by reacting corresponding compounds having a group R<SP>1</SP>OR- (where R<SP>1</SP> denotes a hydrocarbyl group) with a thionyl halide other than thionyl fluoride. Examples describe the preparation of (1) an intermediate of the formula and its conversion to (2) an intermediate of formula and its conversion to (3) intermediate methyl-2-methoxyethyldichlorosilane and its conversion to methyl-2-chloroethyldichlorosilane; and (4) intermediate methyl-2-isobutyoxyethyldichlorosilane and its conversion to methyl-2-chloroethyldichlorosilane. Uses.-The products obtained may be used as intermediates for corresponding quaternary ammonium, phosphonium and sulphonium compounds or as plant growth modifiers.
Patent GB-583819-A (GB)
Title: Improvements in pneumatic comparator gauges
IPC: G01B13/10
Filed: 1944-03-15
Abstract: 583,819. Gauges. MOORE, C. B. March 15, 1944. No. 4849. Convention date, Feb. 1, 1943. [Class 106 (ii)] A pneumatic comparator gauge is provided with means to protect the parts exposed to wear resulting from contact with the workpieces. Pressure air is supplied through a constriction 16 in a removable plug 13 to a passageway 18 in a block 11, the passageway communicating with a pressure gauge 19. A holder 21 is screwed into the block and supports a plug member 22 in a fiuid-tight manner, the plug member being replaceable, according to the size of the workpiece to be tested, and being held by solder 29. The member 22 has a pair of nozzle openings 43 surrounded by grooves 45 connected to longitudinal slots 46 to permit of free discharge of the gauging fluid. To provide against wear, the plug member is plated with chromium or other wear-resistant metal 36 except for the nozzles 43 and a grinding centre 47 and the plating ground to the desired diameter. The plug has an internal bore for the reception of an inserted plug 39 of relatively soft and non-corrosive metal with a central hole 40 of the same diameter as the passageway 25. Internal diameters at various depths and roundness can be checked.
Patent GB-545099-A (GB)
Title: Improvements in or relating to hydraulic power transmission systems
IPC: F16H39/02
Filed: 1941-04-16
Abstract: 545,099. Hydraulic couplings; fluid-pressure servomotors. GLACIER METAL CO., Ltd., ROVER CO., Ltd., and BOYLE, W. R. April 16, 1941, No. 4950. [Classes 69 (ii) and 135] In a hydraulic power transmission system for driving vehicles, the pump c is driven by the engine d and the motor b is connected to the driving wheels a. The pump c delivers to the motor b through a pape f in which is connected an energy storage reservoir e provided with a spring-loaded piston. The driving torque developed by the motor is controlled by a pedal g through linkage 26, 27 and the output of the pump is controlled by a speed governor r acting through bell crank 12 to control a fluid-pressure servomotor q acting on the pump control through linkage s, t. A pressure sensitive piston i loaded by a spring j is subjected to the pressure in the reservoir e and as the pressure falls, the piston, through a spring-loaded abutment m, acts on lever l to open the throttle g<SP>1</SP> of the engine d. If the pressure still falls, the piston rod k will over-ride the governor r and actuate bell crank o to reduce the output of the pump and allow the engine speed to increase. The pedal 28 controls the reverse running of the motor b. The pump and motor may be of the swash-plate types.
Patent GB-848307-A (GB)
Title: A moulding arrangement for the manufacture of glass and reinforced concrete slabs
Inventor: ANHAEUSER FRITZ
IPC: E04B5/46
Filed: 1959-02-12
Abstract: 848,307. Moulding slabs of glass and reinforced concrete. STAHL-UND WALZWERKE ROSSELSTEIN/ANDERNACH A. G. Feb. 12, 1959, No. 4965/59. Class 87(2). [Also in Group X] Slabs of glass and reinforced concrete are moulded in an assembly which comprises a base plate 1 with protuberances 2 at intervals for positioning glass plates 6, a moulding bed 4 with openings corresponding to the protuberances 2 and laid on the base plate 1 with the protuberances projecting through the openings and a mould-defining frame 7 placed on the moulding bed 4. The moulding bed is preferably made of sheet steel, with reinforcing webs 11, 12. Reinforcing irons 8 are placed in position and light-weight concrete 9 is poured in and consolidated by tamping or shaking. A fine cement mortar facing 10 may be added. The moulded slab is lifted away from the assembly on the moulding bed 4 and left to dry thereon. For upright slabs, protuberances from the base engage recesses in the glass plates.
Patent GB-567651-A (GB)
Title: Improvements in or relating to endless bucket or equivalent elevators or conveyors
IPC: B65G17/12
Filed: 1943-03-27
Abstract: 567,651. Bucket and like conveyers and elevators. HAMILTON, J. B. W. March 27, 1943, No. 4993. [Class 78 (i)] In a bucket or like conveyer or elevator of the kind in which each bucket is provided with two spaced pivotal connections and itself forms a link of the conveyer, the buckets are driven frictionally by a plain circular pulley, laterallyspaced guiding means prevent the buckets slipping off either side of the pulley and each bucket engages the pulley along its whole width. In the construction shown, each bucket consists of two side plates 1, a back plate 2 and an inclined bottom plate 3. At one end of the bucket a bearing tube 5 is welded or otherwise secured to ribs 6 and bears on the driving pulley (not shown) along the whole width of the bucket ; at the other end two plates 7 are welded to extensions 1a of the side plates 1 and are bored at 8 to receive pivot pins 9 which are passed through the tube 5 of the adjacent bucket and are secured to the plates 7 by pins 10. Alternatively, the pin 9 may be secured to the tube 5 and may rotate in ball or other bearings in the plates 7. The plates 7 form guides for the buckets. If the buckets are to be spaced apart, chain link members are interposed between the buckets.
Patent GB-140884-A (GB)
Title: Improvements in chucks
IPC: B23B31/12
Filed: 1919-02-28
Abstract: 140,884. Blanton, A. Feb. 28, 1919. Chucks.-The jaws d of bevel-closing chucks have cylindrical extensions e sliding in inclined guides and linked at h to a block f sliding on a Key g on the body and traversed either by a screw fitted with a hand-wheel &c. at the rear of a hollow spindle, or by pins projecting through slots in the body and engaging a rotating or a screw ring. False jaws B are provided with alternative holes for a fixing-screw t, and with a rib v engaging a slot in the main jaw.
Patent GB-511448-A (GB)
Title: Improvements in or relating to electrical bonding couplings
IPC: F16B7/02
Filed: 1938-02-17
Abstract: 511,448. Pipe joints. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., and STEVENS, J. W. SANGER-. Feb. 17, 1938, No. 5005. [Class 99 (i)] [Also in Groups XXXVI and XXV] A bonded joint between two parts of a screening system for the ignition leads of internalcombustion engines comprises a tubular piece 1 attached to one screening member 2 and having an external screw-thread with an internal taper and slits 1a at its end, and a sleeve 3 attached to the other screening member 4 and having an external taper 3a. A screw cap 5 screws on to the piece 1 and draws the sleeve 3 into it expanding the slit end to lock the cap 5. The piece 1 may have an internal flange 1b between which and the end of the sleeve 3 compressing a rubber &c., packing ring 6 that makes a watertight joint.
Patent GB-342546-A (GB)
Title: Improvements in means for connecting detachable motor lorry sides
IPC: B62D33/037
Filed: 1930-02-15
Abstract: 342,546. Road vehicle bodies. PORTESS, G. H., Short's Corner, Frithville, Sibsey, Boston, Lincolnshire. Feb. 15, 1930, No. 5087. [Class 108 (i).] Detachable motor lorry sides and ends are connected to the vehicle by means of a metal strap having at one end an off-set angle lug and a staple member having a hole to receive the lug which is engageable with the hole only by a rectilinear movement and a turning movement and disengageable by the reverse movements. As shown, a strap 1 having means for securing it to the lorry, side 3 or end 4 is provided with an angle lug 8, 9 engageable with a vertical hole 17 in a staple member 14, 15. The lug 8, 9 is preferable curved at 10 and rectangular at 11, 12. The straps 1 may have eyes 6 or pins 5 for securing the sides and ends 3, 4 or 4a together by collar pins 7.
Patent GB-1018661-A (GB)
Title: Process for the hydrogenation of hydroperoxides
Inventor: SPA KENNETH ALLISON MAURICE BA
IPC: C07C33/025
Filed: 1962-02-09
Abstract: Organic hydroperoxides are hydrogenated in the presence of a platinum group metal modified by a compound of Ag, Cu, Zn, Cd, Hg, Sn, Pb, As, Sb, Bi or Tl.  The hydroperoxides are preferably acyclic or unsaturated acyclic compounds, e.g. cyclohexenyl hydroperoxide.  The catalyst is selective for hydrogenation of methylpentene hydroperoxides in the presence of methyl pentenes. Examples 1 and 2 describe selective reduction of tertiary-butyl hydroperoxide. Example 3 the reduction of methylpentene hydroperoxides and Example 4 a combination.ALSO:Hydrogenation catalysts comprise platinum group metal, preferably palladium, modified by a compound of a metal selected from Ag, Cu, Zn, Cd, Hg, Sn, Pb, As, Sb, Bi and T1. Catalyst supports mentioned are C, CaCO3, BaCO3, ZnCO3, MgO, BaSO4, Al2O3 or sepiolite.  Acids mentioned are HNO3, CH3COOH and C2H5COOH. Examples are given.
Patent GB-797048-A (GB)
Title: Improvements in or relating to amplifying devices for telephone hand-sets
Inventor: MILLER CHARLES HARCOURT
IPC: H04M3/40
Filed: 1955-04-21
Abstract: 797,048. Loud-speaker systems; two-way transmission. OPPERMAN, Ltd., S. E. July 23, 1956 [April 21, 1955], No. 5109/55. Class 40 (4). In substation apparatus of the type including two one-way amplifier channels 1 and 12, the output of the first (go) channel feeding a loudspeaker 11 acoustically coupled to the transmitter (not shown) of a handset, and the input of the second (return) channel fed from the receiver (not shown) thereof and driving a second loud-speaker 26, with signal-controlled disablement of one or the other channel, the go channel 1 is normally disabled and remains so while signals are incoming in the return channel 12. Output signals from the third stage 25 of the return channel 12 are in part rectified at 42 to produce a negative bias at point A which is applied to the input 37 of a switching oscillator 38. Part of the output of the second stage 5 of the go channel 1 is applied over a direct A.C. connection to the input 37. The output of a noise microphone 28 is amplified, rectified at 31 and produces a negative bias at point A which is added to that produced from the return channel and prevents noise voltages from microphone 2 from enabling the " go " channel. Part of the total bias produced at A is applied as negative bias to valve 5 to reduce its gain, and a delayed A.V.C. line 44 is provided between point A and the first stage 14 of the return channel 12. In the rest condition the positive potential applied to point B renders diodes 52, 53 conductive and diode 59 non- conductive. With signals incoming over the return channel 12, the negative bias developed at point A reduces the gain of stage 5 and also prevents operation of oscillator 38 by signals from the go channel 1. On the cessation of the signals in the return channel, this bias disappears and the oscillator may then be triggered by voice signals in channel 1. The oscillator output is rectified at 48, smoothed and produces a negative voltage at point B sufficient to overcome the standing positive bias. Diodes 52, 53 become non-conductive and diode 59 conducts, and in addition the gain of stage 16 is reduced. As soon as the voice signals in the go channel cease, the oscillator stops producing an output, go channel 1 is disabled and return channel 12 is again enabled.