baber/WOPTO huggingface dataset:
Patent GB-1279315-A (GB)
Title: Pulse width modulation to amplitude modulation conversion circuit
IPC: H03K9/08
Filed: 1969-07-22
Abstract: 1279315 Pulse modulation circuits ALLENBRADLEY CO 22 July 1969 [16 Aug 1968] 36680/69 Heading H4L A pulse width modulation to amplitude modulation converter circuit comprises an operational amplifier (the output voltage of which is regulated by negative feedback to the input voltage) and driving circuit means connected thereto. The driving circuit means includes input transistor means which is maintained in saturation by bias means in the absence of input width modulated pulses, when a substantially infinite impedance is presented to the operational amplifier. As described, incoming pulses are applied at either a terminal 14 (if negative-going) or at a terminal 16 (if positivegoing) of an input circuit 10. Said terminals are connected through respective resistors 18, 20 to the bases of respective complementary type transistors 22, 24, whose emitters are grounded, and whose collectors are connected to the bases of respective transistors, 50, 52. Operating voltages of magnitudes Œ(E 1  + E B ) are applied through respective resistors 26, 28 to the bases of the transistors 22, 24 and through respective resistors 34, 36 to the collectors thereof, and to the bases of the transistors 50, 52. Operating voltages of magnitudes ŒE 1 , are applied directly to the collectors of the transistors 50, 52. The emitters of the said transistors are connected through respective resistors 38, 40 to the positive input terminal of a D.C. amplifier 12. Said amplifier is arranged as a converter from pulses of varying widths to an analogue signal of varying amplitudes, and it has a feedback capacitor/ resistor circuit 44, 46. The operating voltages are such that, with no input at either of the terminals 14, 16 the transistors 22, 24 are saturated and, consequently, the transistors 50, 52 are cut off, so that an infinite impedance is presented to the input of the amplifier 12. When a signal is received at the terminal 14 or at the terminal 16, the respective transistor 22 or 24 is driven out of saturation, and the respective associated transistor 50 or 52 drives the amplifier 12.
Patent GB-850699-A (GB)
Title: Improvements in or relating to apparatus for feeding solid material to a pulverisingmill
IPC: F23K1/00
Filed: 1957-11-25
Abstract: 850,699. Feeding coal to furnaces. CENTRAL ELECTRICITY GENERATING BOARD, RATCLIFFE, F., PAYTON, E. J., and PUCKEY, S. W. Nov. 20, 1958 [Nov. 25, 1957], No. 36728/57. Class 78 (1). Coal from bunker 2 passes into weigher 3 and thence falls into hopper 4. Hopper 4 is shaped rectangularly at its top and circularly at its bottom so as to feed coal smoothly to shoot 7. Shoot 7 diverges downwardly to allow the coal to fall into trunking 8, which is square. The coal is fed therefrom by screw 11 and drops down shoot to a pulverizing mill en route to the furnace of a boiler. The motor driving the screw 11 is governed automatically in accordance with the needs of the boiler, and the design of the hopper and shoot prevents blockages.
Patent GB-1025437-A (GB)
Title: Methods of polymerizing n-vinyl lactams
Filed: 1964-09-08
Abstract: Polymers of an N-vinyl lactam of the general formula: <FORM:1025437/C3/1> where R1 is hydrogen or an alkyl group containing from 1 to 4 carbon atoms inclusive and n is 2,3, or 4 are made by effecting the polymerization of the lactams in the presence of a hydride or borohydride of an alkali metal and optionally an alkali metal, alkaline earth metal, or an oxide hydroxide, or alkoxide thereof. The lactam may be N-vinyl pyrrolidone which is exemplified, N-vinyl pyrrolidinone or piperidone, or caprolactam, or a substitution product of these compounds.  The polymerization may be effected in bulk, a hydrocarbon solvent or diluent, or in aqueous media, and is preferably conducted at elevated temperature.
Patent GB-784819-A (GB)
Title: Improvements in combustion chambers for internal combustion engines, and methods of forming them
IPC: F02B75/22
Filed: 1955-12-23
Abstract: 784,819. Milling. GENERAL MOTORS CORPORATION. Dec. 23, 1955 [Dec. 31, 1954], No. 36874/55. Class 83 (3). [Also in Group XXVII] A cylinder-head combustion chamber 19 is formed, or finished after casting, by a milling cutter 31, the axis of rotation of which moves parallel to itself through a circular path 34, the cutter being removable from the chamber when in the position 36.
Patent GB-1221896-A (GB)
Title: A light sensitive image storage device and a method of manufacturing the same
Inventor: FUJII AKIHIRO
IPC: H01L27/00
Filed: 1969-07-24
Abstract: 1,221,896. Semi-conductor image storage devices; image pick-up tubes. TOKYO SHIBAURA ELECTRIC CO. Ltd. 24 July, 1969 [25 July, 1968], No. 37229/69. Headings HID and HlK. An image storage device, e.g. for a vidicon tube, comprises an N(P)-type semi-conductor substrate 10 having in one surface an array of discrete P(N)-type islands 11 and an N+ (P+)-  type layer 12 situated between the islands 11. An insulating coating 13 covers the entire surface except for the P(N)-type islands 11. As shown, the layer 12 is contiguous with the islands 11, but they may alternatively be spaced apart. In the form shown, the N + -type islands 12 are formed by diffusion into the N-type Si substrate 10 through the apertures in a SiO 2  coating 13. In a first modification (Figs. 2A- 2G, not shown), a B doped P-type layer is initially formed by diffusion or epitaxy over the entire surface of the N-type substrate 10 and an N + -type mesh 12 is then formed by selective diffusion of P to isolate P-type islands 11. Finally, the SiO 2  coating 13 is applied and shaped. In a second modification (Figs. 3A- 3F, not shown) a layer of SiO 2  is selectively removed from an N-type Si substrate (10) to open up a mesh-like pattern surrounding isolated islands of SiO 2 . Ga and one or more dopants from the groups P, As, Sb and Bi are then diffused simultaneously or sequentially into the surface, the latter dopant(s) being masked by the SiO 2  islands and so forming a mesh-like N+-type layer (12) while the Ga diffuses through the SiO 2  to form the discrete P-type islands (11). The insulating coating (13) is finally applied and selectively removed as necessary. Ge, GaP and GaAs are also referred to, as is Si 2 N 4  as a substitute for SiO 2 . Individual elements of the device may have a PNP structure instead of the simple PN structure illustrated.
Patent GB-872025-A (GB)
Title: Improvements in or relating to couplings for vehicles
IPC: A01D67/00
Filed: 1959-11-03
Abstract: 872,025. Tractor power-lift mechanisms. LARSEN, H. Nov. 3, 1959 [July 20, 1959], No. 37280/59. Class 79(1). An agricultural machine 2 is coupled to a tractor 1 by a linkage allowing it to move about an axis 8 and is driven from the tractor power-take-off 16 through a transverse shaft 10 mounted in a member 9 carried by a lifting device 11 . . 13 on the tractor, the shaft having a pulley 17 connected by belts 18 to a pulley 19 on the machine. The linkage comprises an arm 20 welded to the member 9 and connected at 21 to a tie bar 22 on the machine and arms 3, 4 on the tractor connected at 5 to arms 6, 7 on the machine, tolerance at the points 5, 21 permitting the movement about the axis 8.. The belts 18 may be adjusted by a device 25 incorporating a spring element.
Patent GB-1201812-A (GB)
Title: Method and apparatus for coating panels
IPC: B05C5/00
Filed: 1967-08-14
Abstract: 1,201,812. Coating apparatus. SOMMER & MACA GLASS MACHINERY CO. 14 Aug., 1967 [18 Oct., 1966], No. 37312/67. Heading B2L. Panels, e.g. glass panels, are coated by moving them horizontally through a vertically flowing curtain of coating material, the panels being first moved on a conveyor at a first predetermined speed, thereafter moved horizontally on the conveyor and through the curtain of coating material at a second predetermined and increased speed, and finally moved on the conveyor at the first predetermined speed. The panels are moved through the curtain at  speed correlated with the thickness of the curtain to produce a deposit of coating material on the panels having a predetermined thickness. The speed through the curtain may be 15 to 37 times the first predetermined speed, e.g. 60 to 150 feet/minute and 4 to 7 feet/minute respectively. Apparatus for coating panels comprises a horizontal conveyor formed of a plurality of parallel, laterally disposed rollers for conveying the panels horizontally, divided into an upstream, an intermediate and a downstream group, first means having an actuating connection with the upstream and downstream groups for rotating the rollers at a first predetermined speed, second means having an actuating connection with the intermediate group for rotating the rollers of the intermediate group at a second predetermined and increased speed, a switch positioned on the conveyor actuated by panels moving on the conveyor and connected to the first and second means for rotating the rollers at the predetermined speeds, and means for forming a vertically falling curtain of coating material located above the intermediate group of rollers. The curtain of coating material may be formed by means of a hopper extending across the path of the panel, which hopper has in its bottom an elongate slot through which the coating material issues; by means of a weir over which the coating material flows; or by forcing the coating material through a slot. A second intermediate group of rollers, positioned between the upstream group and the first intermediate group, have clutches associated with the rollers of the second intermediate group which are effective to engage the rollers of the second intermediate group alternately with the first and second means for rotating the rollers at predetermined speeds. The aparatus may include means for collecting and recirculating coating material not applied to the panels.
Patent GB-527010-A (GB)
Title: Improvements in or relating to the provision of wire-rips in canisters
IPC: B21D19/12
Filed: 1938-12-22
Abstract: 527,010. Making rip-seams; seamed joints. BOGNER, P. Dec. 22, 1938, Nos. 37353/38 and 3302/39. [Classes 83 (ii) and 83 (iv)] A rip-wire is secured in a desired location on a can or the like by forcing the wire 46, Fig. 13, into a preformed channel or other wire receiving portion at such location and then clinching the sides of the channel together by grippers or rolls or by forming a substantially closed channel 73 about the wire in one operation. A canend 47, Fig. 1, with a preformed channel 71 is placed on a rotatable head 28, spring mounted on a carriage 25, which is then moved until it engages a stop 37. A rod 36 then lifts heads 33, 34 to lift the head 28 so that the channel member 71 enters between a removable roll 21 adjustable by a screw 50 and a removable roll 22 which is advanced towards the roll 21 by a cam 54 and fixed roll 55 when the rolls 21, 22 are subsequently rotated. The head 34 at the same time lifts a wire guide 30 and inserts a tongue 38, Fig. 7, into the channel 71 adjacent its perforated end 102. The wire feed shown in Fig. 3 is then operated until the wire projects through the hole 102. The cutter 43 then severs a length sufficient for one rip-seam. The rolls 21, 22 are then rotated thus feeding the channel member 73 between them and clinching it as shown in Fig. 8. As soon as the can-end 47 commences to rotate a spring 108, Fig. 1, lifts the guide 30 so that the tongue 38 presses the wire into the channel as shown in broken lines in Fig. 7. The.slide 25 may then be advanced to a stop 61 and the channel member be flattened by rolls 63, 64 operated like the rolls 21, 22 or by grippers. In a modification, the wire may be inserted as described in Specification 497,785 before the part 47 is fed to the apparatus and in this case a tongue 38 without a wire guide &c. is employed. If desired, the tongue may be replaced by a small roller or may be separate from the wire guide. In another modification the part 47 is rotated by a driven plate 84, Fig. 14, while the channel member 73 is acted upon by large idle rolls 91, 92, the latter being moved laterally by cam &c. mechanism in timed relation with the shaft 89. If one wall of the channel 71 is in the same plane as the wall 69, Fig. 13, of the central depression the rolls 21, 22 and 63, 64 may have interengaging formations to prevent relative axial movement. The hole 102 may be closed by solder or other sealing material and the wire end 75 secured by including it in the seam made subsequently. Between the ends of the channel 73 there may be a channel in reduced depth instead of a flat portion 104. The apparatus described may be combined with other apparatus, e.g. for seaming with or without wire inserting means. Specifications 505,454 and 527,072 also are referred to.
Patent GB-1115448-A (GB)
Title: Key operated locking device for linear transmission mechanisms
IPC: B60R25/00
Filed: 1965-09-01
Abstract: 1,115,448. Vehicle bonnet locking mechanism. W. RAE. 30 Nov., 1966 [1 Sept., 1965], No. 37415/65. Heading B7J. [Also in Division E2] A car bonnet catch 27 may be released by pulling on a Bowden cable 13, Fig. 2, or a rod (42), Fig. 3 (not shown), the cable being connected to a splined shaft 12, Fig. 4, fixed to an inner coupling 11 which in turn is connected with an extension 9 of a cylindrical lock 2 by a spring loaded pin 8 engaging in a hole 10 in the coupling 11. The dashboard mounted lock 2 has wards 3, Fig. 4, which may project into slots 4 in a lock housing 5 provided with a knob 14 and also into slots 6 in a surrounding sleeve 7 slidable in a fixed sleeve 35 within the limits set by movement of a screw 22 within a slot 23. An end cover 18 of the fixed sleeve 35 is slotted at 17 to receive a pin 15 on a disc 16 fixed to the shaft 12, which arrangement limits rotational movement of the shaft. In operation insertion of the key 1 withdraws the wards 3 from the slots 4 and 6 thus allowing the look to be rotated within sleeve 7 and also the look extension 9 which carries with it the coupling 11, shaft 12 and cable 13. The rotation of these members is limited by the pin 15 engaging the slot 17 in the end cover 18 of the fixed sleeve 35. In this position the splined shaft 12 registers with the openings 20 in the cover 18 so that the knob 14 may then be pulled to move the cable 13 and release the catch 27. The key can only be withdrawn when the lock is turned such that the wards 3 are aligned with the slots 4 and 6, in which rotational position the splined shaft 12 is not registered with the openings 20 in the cover 18.
Patent GB-1111854-A (GB)
Title: Production of aminoalkanol sulfuric acids
Inventor: KINDLER HUBERT
IPC: C07C305/04
Filed: 1965-09-03
Abstract: Aminoalkanol sulphuric acids, i.e. sulphuric acid monoesters of aminoalkanols are prepared by allowing an aminoalkanol and sulphuric acid to flow into a vigorously stirred suspension agent which agent is immiscible with water and is kept boiling at 70 DEG  to 150 DEG C., the water formed in the reaction and any water supplied with the reactants being distilled off together with part of the suspension agent, the reaction being effected at atmospheric or subatmospheric pressure.
Patent GB-831314-A (GB)
Title: Improvements in and relating to hand tools
IPC: B25D3/00
Filed: 1957-12-04
Abstract: 831,314. Chisels. CINCINNATI TOOL CO. Dec. 4, 1957 [April 5 1957], No. 37787/57. Class 61. The striking head of a chisel punch or like impact tool compri. ses an outwardly extending radial flange 15 at one end of a shank 11 and a concentric, cylindrical projection of smaller cross sectional area terminating in a flat striking face 18. The height of the projection is substantially less than the radial distance which the flange extends outwardly beyond the projection.
Patent GB-986000-A (GB)
Title: Intra-uterine contraceptive
IPC: A61F6/14
Filed: 1961-10-24
Abstract: An appliance for insertion into the uterua comprises a resilient strand or strip having s free shape as a coil in substantially one plane.  The device is made from synthetic resin, such as polyethylene or polypropylene, or from metal, so as to be readily deformable to a straight line whereby it can be introduced through a cannula and will immediately return to its coiled shape. It is preferred that it should have a simple spiral form but sinuous or other forms may be used, and it may incorporate barium sulphate to facilitate observation under X-rays.
Patent GB-1400343-A (GB)
Title: Measuring tool incorporating a level tube
IPC: G01C9/28
Filed: 1973-08-10
Abstract: 1400343 Measuring tool incorporating a liquid level STANLEY WORKS 10 Aug 1973 [6 Oct 1972] 38048/73 Headings G1F and G1X A measuring tool comprises a leg 16 having a substantially planar surface and a transparent level vial 42 snap fittingly mounted in a recess 52 of a mounting member 44 having a convexly arcuate portion which rockingly abuts a substantially planar seating surface 38a so as to allow calibration of the level 12 prior to securing thereto. A recess portion 56 exposes at least the central portion of the vial for 360 degrees reading, the member 44 exposing the entire upper portion of the vial but preventing axial movement of the vial in the recess 52. The member 44 includes a pair of depending arms 60 which extend along the sides 38 adjacent surface 38a. A measuring instrument, e.g. rule 14, may be slidably mounted in either leg 16 or a second leg 18 (as shown). The arms 60 may include ribs 64 which frictionally engage the sides 38, and the securing thereof may be effected by adhesion, heat or solvent treatment of the member if of plastics, a pin or by rivets.
Patent GB-1482961-A (GB)
Title: Vacuum-type circuit interrupter
IPC: H01H33/66
Filed: 1974-09-02
Abstract: 1482961 Vacuum switches WESTINGHOUSE ELECTRIC CORP 2 Sept 1974 [14 Sept 1973] 38261/74 Heading H1N In a vacuum switch of the type comprising, in an evacuated envelope, a pair of contacts 6, 7, between which an arc may occur and a metallic condensing shield 13, 19A, to prevent deposition of metallic vapour from the arcing region on to the inner walls of the envelope, a field coil 19 is provided so that current flowing in this coil during arcing will produce a magnetic field in the direction from one contact to the other to control the arc, this field coil being connected to the metallic condensing shield 13, Fig. 1, or the condensing shield being at least partly in the form of a coil 19A, Fig. 5. In the latter case the shield may be isolated from the contacts, Fig. 7, not shown. The field coil may be inside the evacuated envelope or outside it, and may comprise two subcoils each associated with a respective contact, Fig. 6, not shown. The condensing shield may be wholly in the form of a single helical coil whose diameter may vary along its length, or be in the form of a pair of loops interconnected by a coil, Fig. 7, not shown.
Patent GB-1066965-A (GB)
Title: Photographic print-out materials
IPC: G03C1/695
Filed: 1963-09-30
Abstract: 1,66,965. Photo-sensitive azide materials. KODAK, Ltd. sept. 30, 1963 [Oct. 1, 1962], No.38383/63. Heading G2C. A photo-sensitive material comprises a layer of a binder containing an azide of formulae wherein Q is oxygen, sulphur or > NR; R being hydrogen, alkyl, aryl, sulphonyl, alkoyl, aroyl, carbalkoxy or carbamyl; R1 and R2 complete a fused benzene ring; R3 is azide or alkyl; R4 is azide or amino; Z is a =CH- group or nitrogen; and at least one coupling compound of formula wherein R8 is hydrogen, alkyl, alkoxy or nitro or with R9 forms a fused benzene ring, Rio is hydrogen, alkyl, alkoxy, nitro, hydroxy or oxygen as a keto group; or with R11 forms a fused benzene ring, W is sulphur, selenium, oxygen or being alkyl, X<#> being an anion; and R13 being an alkyl group. Specified binders are gelatine, casein, rubber, polystyrene, a vinyl resin, a cellulose ester or a mixture thereof. In the example, the azide and coupler are disposed in cellulose acetate/propionate and imagewise exposed to give a print-out image. The image may be stabilized by treating them with a solvent (e. g. an alcohol, trichloroethylene or butyl acetate) which removes the azide but leaves the dye image.
Patent GB-1332581-A (GB)
Title: Method and arrangement for the determination of the filler  content in paper
IPC: G01N33/34
Filed: 1971-08-18
Abstract: 1332581 Measurement of filler content of paper OSTERREICHISCHE STUDIENGESELLSCHAFT FUR ATOMENERGIE GmbH 18 Aug 1971 [18 Aug 1970] 38838/71 Heading G1A Apparatus for measuring the filler content of paper comprises a radio-active source 6 shielded at 7 from a scintillation counter 4, the paper being passed as a continuous web over a metal coated roller 3 which provides a reflective surface for radiation in a particular measuring range. Pulse height analysis is carried out on detected radiation in two radiation energy ranges, Figs. 2, 3 (not shown), one (range II) in which radiation detected is that which is reflected elastically from the coating 2 and is absorbed by the paper filler, and another (range I), in which radiation detected is that back-scattered by the filler material itself. The energy ranges which may be single energy values, are defined in pulse height analyser circuit 8. The outputs are fed to differencing circuits 9 which subtract therefrom zero values taken without paper in the radiation path and stored, and the signals then combined at 10 in a summing, multiplying or dividing circuit to obtain a signal representative of filler content which is indicated at 11. The source 6 may be Fe-55 providing y-rays, and the detector an Na(Tl) crystal and photo-multiplier combination provided with a beryllium window. The roller coating may be copper, aluminium or plastics material. Filler materials which may be determined are exemplified. Compensation for source decay may be provided e.g. by use of a specialized circuit at 10. Both direct intensities and integrated values may be measured in the two ranges.
Patent GB-867557-A (GB)
Title: Improvements in or relating to carriers for motor scooters
IPC: B62J11/00
Filed: 1959-11-16
Abstract: 867,557. Carrier for motor scooters. TRUP Ltd., RALPH, and TRUP, R. Nov. 16, 1959, No. 38854/59. Class 136(1). A spare wheel carrier comprising two portions, an inner and an outer, between which the wheel is carried with means for fixing them in spaced relation one to the other. The two portions may be painted or finished separately before assembly together. In the construction shown the upper and lower portions 1 and 4 are fabricated from steel tube, the upward extending ribs 7 of the lower one being bolted to lugs 9 on the upper one. The wheel is held in position by the hinged member 12 which is retained by the bolt 13 passing through the hole 15 and locked by the nut 12 and padlock hasp 17 passing through a hole drilled in the bolt 13. Arms 10 project forward from the upper frame for bolting beneath the saddle, and attachment lugs 11 are provided below the frame.
Patent GB-1470609-A (GB)
Title: Fingerprint detection
IPC: A61B5/117
Filed: 1975-07-04
Abstract: 1470609 Fingerprinting DEFENCE SECRETARY OF STATE FOR 4 July 1975 [5 Sept 1974] 38864/74 Heading B6C Fingerprints are rendered visible by applying a reagent to the surface carrying them by applying a surface of a body comprising the reagent in dry finely-divided form mixed with an inert plastic material, i.e. a material capable of being manually shaped and of a dough-like consistency. The plastic material may be an uncured silicone rubber or a mixture of silica and paraffin. The fingerprint may be first contacted with iodine vapour and then with the body containing, as reagent, a diamine having two phenyl groups, e.g. p,p<SP>1</SP>-tetramethyldiamino diphenyl methane.