baber/WOPTO huggingface dataset:
Patent GB-1138403-A (GB)
Title: Building set for making tracks for model railways
IPC: A63H19/30
Filed: 1966-11-28
Abstract: 1,138,403. Model railway track building set. A/S LEGO SYSTEM. 28 Nov., 1966 [13 Dec., 1965], No. 53126/66. Heading A6S. A building set for track for model railways comprises thermoplastics injection moulded elements. Some are rail elements; others have on one face 20 primary coupling studs 21 spaced equally in lengthwise and transverse directions. These frictionally engage either secondary studs (23) on the opposite face (23) of another such element, spaced so that a secondary stud fits between four primary studs, or locating studs 14 equally spaced inside a recess 13 along the bottom of a rail element 10 which has a rail-forming rib 11 along the top which may be grooved to hold a wheel. The elements can be pressed together to engage the studs. The rails may be straight, curved, intersecting, or be sloping (Fig. 13) and made up of elements each having the bottom face provided at each end with an obtusely inclined face 17, and the end faces 18 forming an obtuse angle with the upper face 11a.
Patent GB-1144107-A (GB)
Title: Method and means for separating liquids of different specific gravities
IPC: A47J43/28
Filed: 1967-11-27
Abstract: 1,144,107. Separating milk and cream. D. G. GREAVES. 27 Nov., 1967 [30 Nov., 1967], No. 53880/67. Heading A2B. [Also in Division B1] A ladle for removing cream from milk comprises a cylindrical body, with an inverted funnel 10 as a floor, on a handle 16. The ladle is pushed down into the liquids so that the upper liquid rises up the funnel and flows through opening 12 into the body, in which it is retained when the ladle is withdrawn.
Patent GB-1367797-A (GB)
Title: Table devices
IPC: A47B9/00
Filed: 1971-11-02
Abstract: 1367797 Tables R J SEARLE 25 Oct 1972 [22 Nov 1971] 54105/71 Heading A4H A table comprises a top 1 and leaves 2, 3 hinged thereto about respective axes X-X and  Y-Y, the leaves 2, 3 having respective leg structures 4, 5 rigidly secured thereto approximately at right angles. The height of the table as shown in Fig. 1 can be altered by folding the leaves 2, 3 downwardly so that they engage the floor and support the top 1 as shown in Fig. 2. The parts are retained in the positions shown by retractable stops, toggle-acting stays or spring- loaded bolts.
Patent GB-1189466-A (GB)
Title: Improvements in or Relating to Cloth Shearing Machines
Inventor: SELLERS ROBERT FREDERICK
IPC: D06C13/00
Filed: 1967-11-28
Abstract: 1,189,466. Shearing fabrics. SELLERS & CO (HUDDERSFIELD) Ltd. 15 Nov., 1968, [28 Nov., 1967], No. 54204/67. Heading D1S. A fabric shearing machine including a shearing, roller 10 and a vee bed 13 is characterized in that the vee bed includes an adjustable member 14 capable of being moved between at least two operative positions to present to the roller 10 either a solid bed, Fig. 1 (not shown), or a hollow bed, Fig. 2, as required. The roller 10 is provided with radial blades 11 which cooperate with a fixed stationary blade 12. The member 14 comprises two spaced inverted-V section members 15 which form a hollow bed in the space 16 therebetween. The member 14 is pivotable about a point 17 so that either member 15 can be brought into position to form a solid bed or various degrees of solidity can be provided between a solid and a hollow bed. A locking nut (not shown) is provided.
Patent GB-1341314-A (GB)
Title: Telegraph or similar switching system
IPC: H04L12/50
Filed: 1971-11-25
Abstract: 1341314 Telegraph exchanges INTERNATIONAL STANDARD ELECTRIC CORP 25 Nov 1971 [1 Dec 1970] 54782/71 Heading H4P A programme controlled telegraph exchange system in response to a subscriber call signal, comprising a sequence of characters including the identity of a wanted subscriber(s), ascertains whether the called subscriber(s) is free or busy and transmits to the calling subscriber a proceed to send character sequence or an engaged character sequence accordingly. A receiving scanner EXR samples incoming lines lge, jce from subscriber line circuits EL and inter-exchange-junction line circuits EJ, and a circuit BR reconstitutes the characters for processing by the central control unit CL. Any character for transmission is returned via a transmitting circuit BE and transmitting scanner EXE to outgoing lines lgs, jcs of the line circuits EL, EJ. The central unit has a short term memory MS, with a storage location for each subscriber line circuit and junction, each location having a sequence counter whose count indicates the state of that line or junction, e.g. free, receiving, transmitting &c. A calling subscriber or junction sends a call signal comprising a two character start signal, the identity of the wanted subscriber or group of subscribers and a three character stop signal, and the number is inserted in the storage location of the calling subscriber. If an incomplete calling signal is received an interdiction sequence is sent to the calling subscriber informing him of the situation. The central controller examines the count of the wanted subscriber or subscribers memory counters to ascertain whether they be free or busy, and if free sends a seizure signal to the wanted subscriber or subscribers which then reply. Only when the or all subscribers have replied is a proceed to send signal inserted in the calling subscribers storage location for transmission via BE and BXE. If a wanted subscriber is busy or fails to reply an interdiction sequence is sent to the calling subscriber. Characters now sent by the calling subscriber or junction are stored in the location or locations of the called subscriber or subscribers for transmission to them. A further store may be employed if the transmission speed of the calling subscriber is greater than the receiving speed of the called subscriber or subscribers, however, if the reverse is the case filler signals may be inserted. The exchange may permit only one way working between the calling subscriber and called subscriber or alternatively may allow two way working between the subscribers.
Patent GB-1196377-A (GB)
Title: Fibre Collection apparatus for the production of Mats of Fibres
IPC: D04H1/4218
Filed: 1968-11-19
Abstract: 1,196,377. Endless conveyers. INSULWOOL PRODUCTS PTY. Ltd. 19 Nov., 1968 [20 Nov., 1967], No. 54881/68. Heading B8A. [Also in Division D1] A conveyer device on which fibres are collected in mat form by suction consists of a wire supported in endless configuration so as to have a plurality of straight runs disposed side by side, the wire being driven so that the runs travel in one general direction with suction applied to the gaps between the runs. The runs 51 may run parallel and extend between a pair of spaced support rollers 1 and 2, the parallel runs being connected by return runs and are outside parallel run 51a being connected through a laterally extending span of wire 58 to the return run which is beneath the other outside run. The rollers are provided with a plurality of circumferential grooves which are greater in number than the number of parallel runs so that the spacing of the runs can be varied. Alternatively, the runs of wire can constitute a wall of a fibre collection chamber which is completed by a further wall also constituted by straight runs. The runs extend between a pair of spaced support structures one of which comprises a single roller 66 to which all the runs extend and the other comprising a plurality of rollers 63, 64, 65 arranged in trough formation, each run only extending over one of these rollers. The chamber so formed has its mouth at the end defined by the rollers 63-65 and converges towards the end defined by the single rollers 66.
Patent GB-1096484-A (GB)
Title: Improvements in or relating to semiconductor circuits
IPC: C23F1/02
Filed: 1966-12-21
Abstract: 1,096,484. Etching. INTERNATIONAL BUSINESS MACHINES CORPORATION. Dec. 8, 1966 [Jan. 21, 1966], No. 54901/66. Heading B6J. [Also in Division H1] In a method of producing semi-conductor devices (see Division H1), a masking layer 18 is formed on a wafer 10 of semi-conductor material, a discontinuous pattern 14 of linear apertures 14a to 14f are formed in the masking layer so as to leave gaps 15 in the pattern where the lines would otherwise intersect, Fig. 1, and etching the surface of the wafer to form a continuous channel of substantially uniform depth. If a continuous masking pattern is used the channel depth is increased at the intersections and to avoid this the gaps in the pattern are provided at the intersections and the etchant undercuts the gaps to form the continuous channel. The semi-conductor material is silicon, the masking layer is silicon dioxide, the pattern of apertures in the masking layer is formed by masking with a photoresist and etching in hydrofluoric acid. The channel in the silicon wafer may be etched, using a 5 : 2 : 1 mixture of nitric, acetic, and hydrofluoric acids. In a subsequent process the silicon wafer is mounted on a quartz disc with black wax to expose the flat face of the wafer which is etched in a rotating " TEFLON " (Registered Trade Mark) cup of approximately twice the diameter of the wafer, first using hydrofluoric acid, then one of the etchants referred to above, followed by a weaker etchant. The process is used to reduce the thickness of the wafer until a layer of silicon dioxide deposited in the channel, produced in the opposite face of the wafer as described above, is exposed. The rotating cup process tends to round the outside edge of the wafer and thus make the surface convex, and to avoid this effect a rim of silicon may be formed on the periphery of the major surface thus ensuring that the surface is etched in a planar manner.
Patent GB-550496-A (GB)
Abstract: 550,496. Calculating machines. NILSSON, R. S. July 7, 1941, No. 8574. [Class 106 (i)] The invention relates to calculating machines of the kind having co-axial setting-up wheels each furnished with elements having teeth normally retracted and adapted to be extended outward on the actuation of key elements to cause any number of such teeth corresponding to a particular key to project so as to co-operate with toothed wheels to operate counter wheels to varying degrees, the co-axial setting-up wheels being mounted on a carriage moved in a stepwise manner to bring them into position to operate the counter wheels. According to the invention, the setting-up wheels have rigid elements each toothed at one end, the end opposite to the toothed end being arranged to co-operate directly with bars operated upon by the key elements. Each of the numeral keys 24 of a ten-key fourrule machine overlies one or more of four levers 22 (Figs. 3 and 4 ... 4d, not shown) which when operated strike the lower ends of rigid members 11, 11a, 11b, 11c, Figs. 7, having teeth at their upper ends, to project the corresponding number of teeth from the setting-up wheel, the rigid members being held in set position by spring locking means until projection 20 is displaced by striking cam 21, at the return movement of the carriage when the setting-up wheels are being cleared. The totalizer 92 is driven by wheels 90. At transfer pin 101 co-acts with cam surface 102 to rock lever 93, of which cam surface 94 cooperates with one of elements 96 sliding in slots in a pair of discs 99 to cause the element 96 to engage the wheel 90 of next higher denomination and move it one step.
Patent GB-1179010-A (GB)
Title: Wear Resistant Laminate
Inventor: HALE EDWARD CHALONER
IPC: D21H27/28
Filed: 1967-12-05
Abstract: 1,179,010. Wear-resistant laminates. DOMTAR Ltd. 5 Dec., 1967, No. 55166/67. Heading B5N. A laminate comprising a plurality of resinimpregnated filler sheets and a resin-impregnated fibrous surface sheet, said resin-impregnated fibrous surface sheet incorporating 20- 130% colloidal silica spheres based on the dry weight of the fibres in said surface sheet, is produced by impregnating a fibrous sheet with a thermosetting resin and colloidal silica spherules formed by an ion-exchange process, the pH and viscosity of said silica being compatible with that of the resin, drying the thus-impregnated sheet, applying the thus-impregnated sheet as a surface layer on an assembly of resin-impregnated filler sheets and pressing the sheet and assembly under conditions of high temperature and pressure to fuse the resin and consolidate the laminate. The impregnating resin is preferably a melamine formaldehyde resin and in addition a silane coupling compound may also be admixed with the resin. The fibrous material is specifically of alpha-cellulose or rayon paper.
Patent GB-1107560-A (GB)
Title: Improvements in fluid flow control valves
IPC: F16K31/58
Filed: 1965-12-31
Abstract: 1,107,560. Valves. H. W. JENSEN. 31 Dec., 1965 [15 Jan., 1965; 28 Sept., 1965], No. 55380/65. Heading F2V. A valve comprises a housing A having a connection at the inlet for a flexible hose G and an outlet C. A spherical valve closure E cooperates with a seat D and a rod I connected to the closure extends through the inlet into the hose. The valve closure E is thus urged on to its seat by fluid pressure and may be loaded by a spring while the valve is opened by deflecting the flexible conduit. The rod may extend through an apertured disc inserted in the housing. The valve may be arranged as a cistern inlet valve, the valve housing being connected to a float so that the flexible tube bends with a fall in level to open the valve. The housing may be formed with a seat at opposite ends so that the valve may be used for flow in opposite directions.
Patent GB-1399330-A (GB)
Title: Process for the production of cycloalkenyl compounds
IPC: C07B61/00
Filed: 1973-11-30
Abstract: 1399330 Cycloalkenyl compounds INTERNATIONAL FLAVOURS & FRAGRANCES Inc 30 Nov 1973 [7 Dec 1972] 55671/73 Heading C2C The invention comprises a process for producing a cycloalkenyl compound by reacting cyclopentadiene with a compound of the formula R 2 -CR 1 =CR 3 -CO-R 4  where R 1  and R 4  are alkyl of up to 8 carbon atoms, one of R 2  and R 3  is H and the other is alkyl of up to 8 carbon atoms, in the presence of a Lewis acid halide catalyst. The invention further comprises 2- acetyl-2,3-dimethyl-5-norbornene. The compounds may be isomerized by treatment with an alkali metal alkoxide in the presence of an alkanol as diluent.
Patent GB-1410470-A (GB)
Title: Process fot the production of 4-oxo-benzopyran derivatives
IPC: C07D405/04
Filed: 1971-12-02
Abstract: 1410470 Preparation of benzopyran derivatives FISONS Ltd 30 Nov 1972 [2 Dec 1971] 55918/71 Heading C2C Benzopyrans I in which D<SP>1</SP> is phenyl, -COOH (or an ester, salt or amide derivative thereof) or 5-(1H)-tetrazolyl and R x , R y , R z  and R w  are each H, alkyl, OH, halo, alkenyl, phenyl, alkenyloxy, phenylalkyl, phenylalkoxy, alkanoyloxy or alkoxy; the alkoxy optionally being substituted by alkoxy, OH or a 5-, 6-membered O-containing heterocycle; or one of R x  to R z  may be a group of Formula II in which X is a hydrocarbon chain optionally substituted by OH and R v , R s  and R t  are as R x  to R w  except that they do not represent a group of Formula II; or one or more adjacent pairs of R x  to R w  may represent a chain O-CD<SP>1</SP> = CH-CO-; are prepared by cyclizing a compound III in which R x <SP>1</SP>, R y <SP>1</SP>, R w <SP>1</SP> and R z <SP>1</SP> are as R x  to R w  except that one of R x <SP>1</SP> to R w <SP>1</SP> may represent a group of Formula IV or one or more adjacent pairs of R x <SP>1</SP> to R w <SP>1</SP> may represent a pair of groups and -OH; followed where necessary by esterification or amidification. The compounds of Formula III are claimed per se and may be prepared by dealkylation of compounds V in which R is alkyl and R x <SP>11</SP> to R w <SP>11</SP> are as for R x  to R z  except that one of R x <SP>11</SP> to R w <SP>11</SP> may represent a group of Formula VI or one or more adjacent pairs of R x <SP>11</SP> to R w <SP>11</SP> may represent a pair of groups -CO-C#C-D<SP>1</SP> and -OR. Compounds V may be prepared by reaction of a compound VII in which Hal is Cl or Br and R x <SP>111</SP> to R w <SP>111</SP> are as R x  to R w  except that one of R x <SP>111</SP> to R w <SP>111</SP> may represent a group of Formula VIII or one or more adjacent pairs of R x <SP>111</SP> to R w <SP>111</SP> may represent a pair of groups -COHal and -OR, with a compound Cu-C# C-D<SP>1</SP>.
Patent GB-1405686-A (GB)
Title: Pulse eddy current testing apparatus
IPC: H03K5/04
Filed: 1973-12-04
Abstract: 1405686 Eddy-current testing - flaws MAGNETIC ANALYSIS CORP 4 Dec 1973 [21 Dec 1972] 56072/73 Heading G1N The invention relates to eddy-current flaw testing using a square-wave-pulse exciter-generator controlled by a variable frequency L.C. sine-wave oscillator, whereby the P.R.F. and hence the depth of penetration may be varied. The exciter coil may be a probe or a coil through which the sample passes. As shown in the block diagram of Fig. 1 the preferred circuit arrangement is substantially self-explanatory. A flip-flop "pulse-hold-off" circuit 15 suppresses alternate pulses to provide a 25% duty-cycle at half the P.R.F. The pulse generator 14 also sends quadrature gating signals to the Phase-sensitive detectors 17, 18. The tuned amplifier 28, transformer 27, and oscillator coil 13 may be simultaneously switched to different frequencies. Detailed circuit arrangements of the pulse/gate generator 14, are illustrated in Fig. 2 (not shown), and a simpler arrangement without quadrature gating in Fig. 4 (not shown). These circuits comprise flip-flops with "clamping transistors" responsive to spikes derived by differentiating the trailing edge of the pulses.
Patent GB-1269429-A (GB)
Title: A photoconductive material suitable for use in electrophotography
IPC: C08F26/00
Filed: 1970-11-27
Abstract: 1,269,429. Electrophotographic element. FUJI PHOTO FILM CO. Ltd. 27 Nov., 1970 [28 Nov., 1969], No. 56442/70. Heading H1K. [Also in Division C3] An electrophotographic element comprises a conductive support having thereon a layer containing a polymeric material having repeating units of formula wherein X is CN or CO 2 R<SP>1</SP>, R is H, halogen, OR<SP>1</SP> or CO 2 R<SP>1</SP> and R<SP>1</SP> is an alkyl group preferably having up to 4 carbon atoms. In the specific embodiments, an aluminium plate is coated with an organic solvent solution of a copolymer of a methylene indoline and acrylonitrile, ethyl acrylate, methyl acrylate or n-butyl acrylate and optionally chlorinated diphenyl and chloranil as plasticizer and sensitizer respectively. Conductive paper or plastics film may be used as a support. Other sensitizers and plasticizers are specified.
Patent GB-1215698-A (GB)
Title: Mos field-effect transistor amplifier using capacitive feedback
Inventor: POLKINGHORN ROBERT WILLIAM
IPC: H03K3/353
Filed: 1967-12-14
Abstract: 1,215,698. Field effect transistor circuits NORTH AMERICAN ROCKWELL CORP 14 Dec., 1967 [14 Dec., 1966], No. 56919/67 Heading H3T. In a transistor amplifier circuit a capacitor C is connected between the output and gate electrodes of a MOS transistor 5 (Fig. 1) and switch means 7 and 17 are provided for charging the capacitor, the switch means 7 is in an off state when the voltage across the capacitor is at a predetermined value and when the switch means 12 is in an off state feedback through the capacitor C to the gate 4 increases the conduction through the transistor 5 until the voltage at the output electrode 3 is equal to the voltage applied to a supply terminal -V. When the input 13 (Fig. 1) is negative the transistor 12 turns on the output 3 becomes zero and as transistor 7 is also conducting the capacitor C is charged. As the capacitor C becomes charged the transistor 7 is turned off. When the input becomes zero the charge at the output 3 is fed back via the capacitor C so that the transistor 5 is turned on to connect -V to the output 3. The voltage change at the gate 4 of the transistor 5 depends on the values of the capacitor C and the interelectrode and stray capacitance C1 of the transistor. The input logic transistor 12 may be replaced by several M.O.S. transistors and the transistor 7 may be replaced by a diode. The input 13 and output 3 may be connected respectively to the inputs of push-pull connected output transistors (17, 18, Fig. 2, not shown). In an alternative circuit (Fig. 3), when the input is negative transistors 20, 21 and 27 conduct and the capacitor C cannot charge. When the input becomes zero, the transistors 20, 21 turn off but the output is delayed in rising negatively from zero by a capacitor Cd so that the capacitor C charges via the transistor 27. The output becomes negative after the capacitor Cd has charged and as described above the transistor 26 is turned on to set the output at -V. In a modified circuit (Fig. 4, not shown), the capacitor Cd is connected across the gate to source electrodes of the transistor 20 (30) and the conduction path of a further transistor (Rd) is connected in series with the input to the output transistor 20 (30). The gate of the further transistor (Rd) is connected to -V so that the further transistor (Rd) is turned on. When the input is negative and the transistors 20, 21 are turned on the capacitor Cd charges. Then when the input is zero the capacitor Cd discharges via the further transistor (Rd) and maintains the output transistor 20 (30) conducting for a time sufficient for the capacitor C to charge. Construction.-The circuits may be formed on a silicon substrate (Fig. 5, not shown) including the capacitor C formed by an enlarged metal element comprising the gate electrode 4 of the transistor 5 and a P-type region to which the output 3 and drain 11 and source 10 electrodes are connected.
Patent GB-1195069-A (GB)
Title: Sewing Machine Pneumatic Needle Threader.
IPC: D05B87/02
Filed: 1967-12-15
Abstract: 1,195,069. Vacuum pumps. SINGER CO. Dec. 15, 1967, No.57016/67. Heading F1N. [Also in Division D1] A single-stroke vacuum pump, used in connection with sewing machine needle-threading means, see Division D1, comprises an upper bore 150 containing a flexible piston 152 having an upwardly-directed wall 162, and a lower bore 156 of lesser diameter containing a compression spring 160 biasing piston 152 upwardly. The piston rod 164 passes through a hole 176 of greater diameter, in a fired plate 174 at the outer end of bore 150. Rod 164 is formed with an out-turned handle 170, and also with a notch 172 positioned at a distance from piston 152 equal to the length of bore 150. The arrangement is thereby such that rod 164, when fully depressed, may be moved sideways to engage notch 172 with plate 174. On release of rod 164, spring 160 moves piston 152 upwardly to create a vacuum in a conduit 132 for drawing thread through the eye of a needle.