baber/WOPTO huggingface dataset:
Patent GB-195631-A (GB)
Title: Improvements in devices for turning the leaves of books or the like
IPC: B42D9/06
Filed: 1923-03-27
Abstract: 195,631. Terraz, M. March 28, 1922, [Convention date]. Leaf holders and turners.-Each leaf is provided with an iron clip one face 11 of which is coppered or covered with other non-magnetic material. A magnetized arm 13 mounted on a vertical pivoted support 12 holds the leaf until released by the movement of a sliding plate 9 operated by lazy-tongs connected thereto by the end 7 working in a slot 8. The end 7 is also connected by a link 19 to a curved plate 17 pivoted to the end of the plate 9. When the lazy-tongs move to the extreme extended position shown in dotted lines, the plate 17 turns a leaf over. If the lazy-tongs move to the contracted position, an adjustable stop 15 on the plate 9 moves away from an arm 14 on the support 12 and allows a spring 16 to turn the arm 13 into the position 13<1>, carrying a leaf with it. The return movement of the lazy-tongs withdraws the arm 13.
Patent GB-587678-A (GB)
Title: Propeller blade phase and constant speed synchronizer for multiple motor aircraft
IPC: H02P5/46
Filed: 1944-05-09
Abstract: 587,678. Automatic control systems for aircraft propellers. HOOVER, W.S. May 9, 1944, No. 8785. [Class 38 (iv)] [Also in Group XXIX] A fluid-pressure motor for adjusting the pitch of a variable pitch propeller of an aircraft under control of a governor actuated valve 6 to maintain the engine speed constant is further controlled by an independent auxiliary valve 7 actuated by an electrical control system to maintain the phase relationship of the propeller in synchronism with that of another propeller (see Group XXIX]. The electrical control system comprises a synchroscope having an armature 34 and a field coil 37 to which pulsating currents are supplied respectively by interrupter circuits including transformers 38, 39 and 35, 36, operated by cams 28a and 28 on the governor shafts of two propellers. When the propellers and the current pulsations derived therefrom are in phase the armature is balanced and a switch arm 42 carried thereby is maintained in a central neutral position but on an out-of-phase condition occurring the switch arm is moved over to either of contacts 43 or 44 of relays 45 and 46 to operate a switch arm 47 to close on to contacts 48 or 49 of circuits of solenoids 9, 9<1> for moving the auxiliary valve 7 in one direction or the other to effect a compensating movement of the servomotor to restore the synchronism of the two propellers. In order that the auxiliary valve 7 is not operated whilst the main governor valve 6 is operating, contacts 55, 56 in the circuits of the solenoids 9, 9<1>, which are normally held closedby the pressure from the operating fluid pump 11 on a relief valve 12, are opened by a fall in this pressure which occurs when the main valve is operating to pass pressure fluid to the motor. An interrupter 52 operating contacts 50, 51 in the solenoid circuit is also provided to keep the valve 7 in a state of slight fluctuation to prevent too abrupt adjustment. Indicating lamps 57, 58 and 59 are provided to give an indication of the operation and direction of operation of the auxiliary pitch adjustment.
Patent GB-146600-A (GB)
Title: Improvements in or relating to apparatus for purposes such as the conveying and screening of materials
IPC: B07B1/12
Filed: 1919-04-07
Abstract: 146,600. Hadfield, Sir R. A., and Miller, W. T. W. April 7, 1919. Fixed sieves.-Screening apparatus comprises a pair of intermeshing stepped grids c, d one or both of which is connected by pivots e to eccentric rods f supported by links g. The links at the delivery end of the apparatus are shorter than those at the other end, but at each end the links are mounted in bearings h which can be adjusted vertically and horizontally. Differences in motion are allowed for by introducing compensating links at one end of the apparatus between the grid and eccentric rods. The bars of one grid are recessed at one side to form rectangular screening spaces. In a modification, the relative position of the grids is altered by adjusting the jack-like supports of the stationary grid instead of adjusting the bearings k.
Patent GB-1447922-A (GB)
Title: Liquid ring compressor
IPC: D01H1/11
Filed: 1975-03-03
Abstract: 1447922 Liquid ring compressors SIEMENS AG 3 March 1975 [13 March 1974] 8814/75 Heading F1C A liquid ring compressor 1 has a gas inlet E and an outlet Al connected to a separator 2, a liquid jet pump 4, driven by operating liquid leaving the compressor via outlet 6, drawing liquid from the separator and returning it to the compressor with the operating liquid via cooler 8 and inlet 7. When the compressor has reached its operating pressure, jet pump 4 may be shut off by valve 10 and liquid returned direct to the compressor via line 9.
Patent GB-420643-A (GB)
Title: Rubber floor covering and its method of manufacture
IPC: B29D99/00
Filed: 1934-03-21
Abstract: 420,643. Rubber mats &c. SOC. H. & F. DE POIX ET CIE, Rue des Deux Gares, Reuil, Seine-et-Oise, France. March 21, 1934, Nos. 8853 and 8854. Convention dates, June 23, 1933 and Oct. 26, 1933. [Class 142 (iv)] [See also Group VIII] Rubber floor mats or covering for vehicles comprises an under layer of sponge rubber and an upper layer of ordinary rubber consisting of the impervious skin formed in the manufacture of the spongy mass in a mould. This skin may be fire-proofed by treatment with a mixture of ammonium bromide and wax treated with chlorine. The mat may have parts 3, 4, 5 of extra thickness for the driver's heels and these may be replaced when worn by spare parts of sponge rubber covered with an impervious skin fixed by sticking, dovetailing, &c. A mould for making the mats is made twice the height of the final carpets and with projections or grooves, according to the pattern desired, on its upper and lower sides. After vulcanization, the product is split in the centre.
Patent GB-215529-A (GB)
Title: An improved construction of edging strips for the borders of gardens, paths and the like
IPC: A01G9/28
Filed: 1923-03-29
Abstract: 215,529. Tickle, L. B., and Barnes, H. J. W. March 29, 1923. Garden edging.-Metal edging for borders &c. consists of strips of sheet iron &c. having their upper edges rolled into a large bead and their lower edges bent approximately at right angles. They may be formed with vertical and longitudinal ribs, grooves, &c. for strengthening and decorative purposes. The stamped strips shown are provided with an inturned strip 2 connected to the main strip by a bead 3, and with grooves or swage lines at each end. The strips are connected together by short tubes, pins, or exten. sions 6 fitting into the rolled beads 5 of the adjacent strips. Corner strips are mitred at the end and connected together by angle pins 14. The strips are held in place by stakes driven through holes 8 and through riveted loops 9. The strips may be curved, and may be enamelled, galvanized, or sherardized.
Patent GB-528179-A (GB)
Title: Improvements in or relating to thermionic valve amplifiers
IPC: H03F1/36
Filed: 1939-03-22
Abstract: 528,179. Valve amplifying circuits. PERCIVAL, W. S. March 22, 1939, No. 9015. [Class 40 (v)'] Negative feed-back is used to increase the conductance of a high resistance so as to prevent loss of high frequencies or to correctly terminate a cable, or to provide the required damping for a tuned circuit. In this way a high ratio ot signal to the noise produced by the Johnson effect may be obtained. A cable may be terminated by a resistance in the cathode circuit of a valve, Fig. 1 (not shown), or in a transformer, Fig. 2 (not shown), arranged to give as high a step up ratio as possible and the necessary negative feed-back applied to increase the conductance. Fig. 3 shows balanced conductors 10, 11 connected to a push-pull pair of valves so that each valve shunts the line with its own mutual conductance. The feed-back may be taken from the valve anode, Fig. 4, in which a television transmitting tube 13 is connected to the input and feed-back applied through resistance 16. A transformer may be included in the input, Fig. 5 (not shown). Preferably the negative feedback provides, at least, two-thirds of the mutual conductance. Specification 506,791 is referred to.
Patent GB-162893-A (GB)
Title: A new or improved machine tap holder
IPC: B23G1/46
Filed: 1920-03-27
Abstract: 162,893. Blackstone, G. M., and Blades, F. March 27, 1920. Attachments for tapping.-In a machine tapholder adapted to be held in a turret or like the tap-holding socket a slotted at c is held against rotation in a casing b by a spring-pressed plunger d, the forward end of which is engaged by a bellcrank lever e. A second plunger g engages a. slot h in the casing, this slot being backed off at h' to allow rotation in one direction. When the forward movement of the casing is arrested, the socket is drawn forward by the engagement of the tap with the work until, when a predetermined depth is attained, the portion e' of the bell-crank lever engages the wall f<1> of an annular groove in the casing to force back the plunger d and allow the socket to rotate idly. The work is then reversed, the plunger g holding the socket stationary to effect the withdrawal of the tap.
Patent GB-1034076-A (GB)
Title: Improved plant and processes for the treatment of effluent and sewage
Inventor: ROBJOHNS CYRIL FRANCIS
IPC: B01J19/30
Filed: 1962-03-08
Abstract: A packing material of inert expanded polymeric material is used in biological beds for the treatment of sewage.
Patent GB-1073040-A (GB)
Title: Improvements in or relating to purine derivatives
Inventor: BERGMANN FELIX GOTTHILF
IPC: C07D473/30
Filed: 1966-03-02
Abstract: 1 - Methyl - 6 - thionopurine derivatives are prepared by reacting the corresponding 1-methyl - 6 - methylthiopurine derivatives with H2S and concentrated aqueous NH3.  The following products, starting materials, and precursors are specified: 1,9-dimethyl-6-thionopurine (Ia), 1,9-dimethyl-6-methylthiopurine iodide (IIa), 1-methyl-8-(o-pyridyl)-hypoxanthine (III), 1 - methyl - 8 - (o - pyridyl) - 6 - thionopurine (IV), 1,9 - dimethyl - 6 - methylthio-8-(o-pyridyl)-purine iodide (IIb), 1,9-dimethyl - 8 - (o - pyridyl) - 6 - thionopurine (Ib), 1 - methyl - 8 - phenylhypoxanthine (VIII), 1 - methyl - 6 - methylthio - 8 - phenylpurine iodide (VI), 1 - methyl - 6 - thiono - 8 - phenylpurine (V), and 4 - amino - 5 - benzamido - 6 - hydroxypyrimidine (VII).  Compound (IIa) is prepared by methylating 1-methyl-6-methylthiopurine (IIb) by methylating (IV), and (VI) by methylating (V), using methyl iodide and dimethylformamide in each case.   The compounds (IV) and (V) are obtained from the hypoxanthines (III) and (VIII) respectively by reaction with P2S5.  1-Methyl-8(o-pyridyl) -hypoxanthine (III) is prepared by reacting 4-amino - 5 - formamido - 6 - hydroxyl - 1 - methylpyrimidine with 2 - amidinopyridine hydrochloride and sodium acetate. 1-Methyl-8-phenylhypoxanthine (VIII) is prepared by reacting 4 - amino - 5 - benzamido - 6 - hydroxypyrimidine (VII) with dimethyl sulphate.  The pyrimidine (VII) is itself prepared by reacting 4,5-diamo-6-hydroxypyrimidine sulphate with benzoyl chloride.
Patent GB-565662-A (GB)
Title: Improvements relating to the belling and trimming of metal pipes and tubes
IPC: B21D41/02
Filed: 1943-06-07
Abstract: 565,662. Trimming and expanding tube ends. SHAW, J., and WILLIAMS, M. G. June 7, 1943, No. 9121. [Classes 83 (ii), 83 (iii) and 83 (iv)] A tube to be expanded and trimmed, for example, for making a joint in a hydraulic pipe-line for operating aircraft gun turrets, is clamped between jaws 19, 20 mounted between brackets 13, 14 on a saddle 4 fed on ways by a rack bar 5 and pinion 6 as limited by a stop 9. The jaws taper slightly to grip the tube more tightly towards the expanding tool. The lower jaw is mounted on a lever 18 pivoted at 22 and clamped in its raised position by a bolt 24 and hand-operated nut 26. A spring 29 checks unwanted movement of the tommy bar 27. The tube is set by an adjustable stop 34 in a sliding frame 33 raised by a spring 40 as limited by stops 41, 42. A bevel edged opening 36 in the frame is engaged by a fixed cam surface 39 to depress the stop clear of the tools as the work saddle feeds forward. The expanding is effected by a fluted rubbing tool 1 mounted in a spindle 60. After expansion has been effected, the saddle is withdrawn and a lever 43 pivoted at 21 is turned over bringing a spindle 44 into line with the spindle 60. When the saddle is again fed towards the spindle, clutch teeth 57 on the spindle 44 engage with corresponding teeth on a collar at the base of the tool 1. The spindle is then driven and is prevented from moving further with the saddle. A spring 55 is then compressed and the ball races 52 feed over the spindle 44 so that the cutter 66 projects and trims the end of the tube as limited by a stop sleeve 62 contacting the lever 43. The stop sleeve is adjusted by a backing-nut 64 and is clamped at 63.
Patent GB-609906-A (GB)
Title: Improvements in or relating to rotary fluid pressure apparatus of the sliding vane type
IPC: F04C2/348
Filed: 1946-03-25
Abstract: 609,906. Rotary engines or pumps. COX PATENT ROTARY PUMP, Ltd., and COX, A. F. March 25, 1946, No. 9121. [Class 110 (ii)] In a rotary machine, such as described in Specification 414,752, the spaces formed at the inner ends of the blade slots, where each pair of diametrically opposite blades crosses the other pair or pairs of blades, are substantially sealed from communication with one another. During each inward movement of a blade the fluid beneath it is forced out to the delivery port using slots B<3>, C<4> in the faces of the blades. The pressures exerted on the outer ends of other blades, by an incoming blade, are reduced and this reduces wear. Blades B, B<1> are interconnected by a central web passing through a slot on the axis of the rotor A, while blades C, C<1> are connected by a pair of webs axially displaced from that connecting blades B, B<1>.
Patent GB-1262105-A (GB)
Title: Pneumatic tyres having radial ply carcass reinforcement
IPC: B60C9/26
Filed: 1969-02-20
Abstract: 1,262,105. Pneumatic tyres. DUNLOP HOLDINGS Ltd. 20 Feb., 1969 [24 Feb., 1968], No. 9143/69. Heading B7C. A radial ply tyre 6 has a breaker assembly 3 made up of a radially outer layer 7 and a folded inner layer 8 and two circumferentially extending reinforcement inserts 4 one on each side of the mid-circumferential plane X-X adjacent the axially outermost part of the assembly, each insert 4 comprising two folded layers 9, 10 of cords disposed in side-by-side and substantially parallel relationship, and being enveloped by the folded portion of the breaker layer 8. The axially inner edges of the layers 9 and 10 are axially offset in a stepped arrangement. The region of the tyre lying between the assembly 3, the carcass 1 and the two inserts is occupied by a rubber strip 5. In a modification, (Fig. 2, not shown), each insert comprises only one folded layer.
Patent GB-864118-A (GB)
Title: Method of constructing refractory linings for metallurgical furnaces
IPC: F27D3/00
Filed: 1957-03-20
Abstract: Linings for the walls and hearths of furnaces and converters are made of sintered dolomite, sintered magnesia or mixtures thereof with granulometry controlled in known manner to produce maximum compactness and then subjected to high frequency vibration.  In the case of walls, the loose material is compacted p  behind shuttering which remains "in situ" during use and melts away.  Shaped blocks can be prepared in fluid tight cases of thin sheet metal which also melt during use.  With hearth linings, a six inch layer of material is subjected to the action of a row of vibrators with flat square bases for two minutes at a time, whereupon the vibrators are advanced forward by a distance equal to their length and the process repeated. The whole procedure is repeated with two more layers of material.
Patent GB-103766-A (GB)
Title: Improvements in or relating to Dynamo-electric Machinery.
Inventor: MARDEN WILLIAM
IPC: H02K31/02
Filed: 1916-06-30
Abstract: 103,766. Marden, W. June 30, 1916. Homopolar or acyclic machines; exciting.-The field-magnet winding k of a turbo-alternator &c. is connected to a homonolar exciter c on the shaft b of the main machine. The armature bars g of the machine c are connected in parallel between a slip-ring i insulated from the shaft b and a ring h in metallic connexion with the shaft. The terminals of the winding k are connected respectively to an insulated slip-ring and to the shaft b, and a conducting-connexion is made by brushes i<1>, j<1> between the slip-rings i, j, the shaft forming the other connexion. The field-magnet winding d of the homopolar machine is connected in shunt between the shaft b and the brush i'. The armature of the homopolar machine may be of the disk type. The armature winding may comprise groups of bars connected in series by means of slip-rings and brushes. Instead of using the shaft as conductor between the ring h and the winding k, these may be connected by a conductor carried along or within the spindle.
Patent GB-142992-A (GB)
Title: Improvements in or in connection with fire bars
IPC: F23H13/00
Filed: 1919-04-12
Abstract: 142,992. Gibson, W. April 12, 1919. Fire-bars of the type having a groove 3 without any mid-feather, the side edges being waved or sinuous, are so formed that the troughs of the waves or undulations of the side faces of the bar are flush with the corresponding faces 5, 7 of the straight web 8, as shown in section in Fig. 3. Further, the depth of the undulations is such that, when the bars are placed side by side to form a grate, a straight line, such as 11, parallel to the length of the bars and intersecting the airways 9 between the bars will at the same time intersect the centre lines 10 of the, grooves 3.
Patent GB-197309-A (GB)
Title: Improvements in or relating to blasting cartridges
IPC: F42B3/26
Filed: 1923-04-05
Abstract: 197,309. Soc. l'Air Liquide, Soc. Anon. pour l'Etude et l'Exploitation des ProcÚdÚs G. Claude. May 2, 1922, [Convention date]. Void [Published under Sect. 91 of the Act]. Blasting-cartridges.-A blasting-cartridge is provided at one or both of its ends with a washer formed with one or more slits, for example as shown :in Fig. 3, for allowing a fuze to be pushed into the cartridge and subsequently gripping the fuze cord or wire and engaging a knot or detonator thereon, when such is used, as shown in Fig. 6, to prevent removal of the fuze. The washer is made of flexible material such as cardboard, tin, aluminium, or steel.
Patent GB-703932-A (GB)
Title: Improvements relating to the adhesive-supply rollers of envelope making machines
Inventor: INGLIS JOHN FAIRNINGTON
IPC: B31B19/00
Filed: 1951-04-24
Abstract: An envelope-making machine comprises an adhesive-receiving roller, an adhesive-transferring roller and an adhesive-applying roller which are geared together and driven by gear wheels so proportioned in relation to the diametral sizes of the respective adhesive-carrying surfaces that the surface of the first-mentioned roller travels at a low linear speed, the surface of the second-mentioned roller travels at a higher linear speed, and the surface of the third-mentioned <PICT:0703932/III/1> roller travels at a linear speed which is different from that of the second roller, preferably higher than that of the second roller.  The adhesive-applying roller or gummer 1 has adhesive-carrying surfaces A on spaced segments 2, and a gear wheel 6 with a pitch circle diameter less than the diameter of the surfaces A.  The transfer roller 5, having a surface C close to the surfaces A, has a gear wheel 7 whose pitch circle diameter is greater than the diameter of surface C; thus surface C has a lower linear speed than surfaces A.  Roller 5 has a small pinion 8 meshing with a large intermediate gear wheel 9, provided with a small pinion 10 meshing through an idler gear wheel 11 with a small pinion 12 on the gum-receiving roller 3, which has a surface B, dipping into a gum box 4, and is close to surface C.  Surface B thus travels at a much lower speed than surface C.  In an example surface A has a speed of 250 feet per minute, surface C has a speed of 150 feet per minute, and surface B a speed of 30 feet per minute.
Patent GB-1410752-A (GB)
Title: Shaver cutter head
IPC: B26B19/04
Filed: 1974-03-04
Abstract: 1410752 Dry shavers SPERRY RAND CORP 4 March 1974 [24 May 1973] 9579/74 Heading B4B A cutter head 16 for a dry shaver 10 comprises an outer cutter 17 having a hair-shearing first wall 18 and non-hair-shearing second and third walls 20, an inner cutter 50 having a wall 51 for shearing engagement with the first wall and a member 30 located adjacent the second wall 20 and provided with resilient means 82 adapted to pass through an aperture 80 in the second wall thereby engaging the inner cutter so as to urge it against the third wall, thus guiding the inner cutter in its direction of shearing movement. As shown in Fig. 2, three identical cutter assemblies are mounted on a common mounting frame 40. Each outer cutter 17 is provided with a base member 21 formed with a slot 29 through which an actuating spring 63 passes; the spring is connected to a drive arm 72 of a motor 70 and to the inner cutter 50, the spring also urging the walls 18, 51 into shearing contact. The three cutter assemblies are connected to the frame by clips 49, Fig. 3. The resilient means 82 is in the form of a resilient arm 83A having a protrusion 85 which extends through the aperture 80 and engages the inner cutter. As shown, four such arms are formed integrally with a spacer member 30 and are arranged to co-operate with the inner cutters of adjacent cutter assemblies as shown in Fig. 2. In the modification shown in Fig. 8, the bottom wall 53 of the inner cutter is dispensed with and the spring 63 is connected to the walls 57 which are extended for this purpose. In this embodiment the resilient arms 83A urge one of the walls 57 against a wall 25 on the outer cutter in order to guide the inner cutter. The invention may be applied to rotary inner cutters.
Patent GB-1072445-A (GB)
Title: Non-woven fabrics
IPC: D04H3/16
Filed: 1966-03-04
Abstract: A method of forming a continuous filament non-woven web comprises forwarding bundles of substantially parallel continuous filaments of at least two different compositions (chemically or physically), each bundle comprising filaments of the same composition, through electrostatic charging zones while under tension, forwarding the bundles from these zones, combining the bundles and directing them towards a receiver by means of a gas jet device.  The combined bundles, upon leaving the gas jet device, separate into individual filaments by release of tension and are deposited on the receiver as a non-woven web.  In a preferred embodiment two bundles are employed and each is charged to the same polarity.  The bundles may be separately charged and then combined or one bundle may be charged, combined with the uncharged bundle and the combined bundles subsequently charged. In one preferred form of apparatus, Fig. 1 (not shown), continuous filaments produced from spinnerets are formed into bundles or ribbons of substantially the same width by means of guide rolls. The ribbons are separately passed through corona-charging zones and once charged are combined and forwarded to a slot jet device and deposited on a conveyor belt receiver.  In an alternative embodiment, Fig. 2 (not shown), one ribbon is charged, combined with the uncharged ribbon and the passed through a second corona-charging zone prior to passages through the slot jet forwarding device.  The ribbons may be forwarded by means of hot gasses to develop any shrinking ability in the filaments. Examples of different composition filaments used are copolymer and homopolymer filaments.  Graphs are given to show the effect on the distribution of the copolymer filaments through the web, of separate or combined charging and also the use of hot or cold gases in the jet.  The copolymer filaments act as binder filaments which fuse upon subsequent heat treatment to form a bonded web. The filaments used are preferably terephthalate homo- and co-polyesters.