baber/WOPTO huggingface dataset:
Patent GB-816897-A (GB)
Title: Steering systems for craft
Inventor: BOYD PETER WILLIAM
IPC: G05D1/02
Filed: 1957-08-27
Abstract: 816,897. Automatic steering-control systems. SPERRY GYROSCOPE CO. Ltd. Aug. 27, 1957, No. 27035/57. Class 38 (4). [Also in Group XXXVIII] In an electrical steering control system a rudder servomotor is controlled by the combination of a primary control signal, a follow-up signal, and a third signal having the same sense as the latest signal causing operation of the servomotor. As shown, a potentiometer-type pick-off 1 associated with a directional gyro (not shown) on a craft is connected in a bridge circuit so that course deviation of the craft produces an output from the bridge circuit of corresponding magnitude and polarity which, through a differential transistor amplifier 5, 6, changes the state of one or other of bi-stable transistor circuits 19, 19<SP>1</SP> according to the sense of deviation. Bi-stable circuits. 19, 19<SP>1</SP> are biased through resistors 24, 24<SP>1</SP> so that transistors 18, 18<SP>1</SP> are normally fully conductive but the application of the error signal renders transistor 20 or 20<SP>1</SP> conductive instead to energize a relay 23 or 23<SP>1</SP> and operate a rudder servomotor (not shown) in the appropriate direction to correct the course of the craft. Follow-up is provided by a potentiometer 2 operated with the rudder. Energization of relay 23 or 23<SP>1</SP> respectively opens a contact 34 or 35 to set a bi-stable circuit including transistors 28, 28<SP>1</SP> to such a state that it applies a voltage to differential amplifier 5, 6 of such polarity that the rudder servomotor initially makes a greater correcting movement than it otherwise would. Error signals, corresponding to movements due to wind or sea, which are below a predetermined magnitude determined by the setting of a bias potentiometer P, are ineffective to influence amplifier 5, 6. The circuit includes temperature compensating thermistors 16, 171.
Patent GB-321015-A (GB)
Title: Improvements in methods of jointing concrete or like pipes, and in the construction of such joints
IPC: F16L13/11
Filed: 1928-06-20
Abstract: 321,015. Brader, C. B. June 20, 1929. Spigot and-socket joints held by cement and the like ; jointing-apparatus.-Concrete &c. pipes having spigot and socket ends 2, 3 respectively are jointed by cement which is poured into an annular recess between the pipe ends through one of the holes 3<b>, 3<c>, 3d provided in the socket end. The recess is formed in the socket member, one end 3<a> thereof being deeper than the other end 3e, and the holes 3<b> &c. lead from the external surface of the socket to the end 3a of the recess as shown. The inner edges of the joint are covered during jointing by a removable liner comprising a band 4 of metal having a rubber covering 5 which is adapted to be expanded by a wedge 6 inserted between the ends 4a, 4<b> of said band, and the outer edges may be covered with a similar liner provided with means for drawing the ends thereof together. The joint is preferably completed by an outer covering ot fabric or cement.
Patent GB-735533-A (GB)
Title: Improvements in or relating to a windshield cleaner
IPC: B60S1/18
Filed: 1952-10-28
Abstract: 735,533. Windscreen cleaners. TRICO PRODUCTS CORPORATION. Oct. 28, 1952 [Oct. 29, 1951], No. 27082/52. Class-138 (1). Relates to the combination of a windshield wiper with a windshield having a frontal portion 1 of relatively slight curvature and the lateral portion 2 extending rearwardly from the portion 1 and connected thereto by a portion 3 of relatively sharp curvature, comprising an inner rockshaft 18 mounted below the portion 1, an outer rock-shaft 19 mounted below the portion 2, a windshield wiper arm carrying a wiper blade mounted on each rockshaft and means for oscillating the arms in unison, the rock-shafts 18, 19 being arranged in such proximity to one another than the outer arcs of the paths of the wiper blades intersect at a point on the portion 1 in or adjacent a vertical plane through the axis of the inner rock-shaft 18. There are two lateral portions 2 and a pair of wipers 4, 5 for each side of the windshield. Referring to one side of the windshield, only, e.g. the right-hand side, Fig. 2, the shaft 18 for the primary wiper 4 is mounted directly in front of the driver whilst the secondary wiper 5 has its shaft 19 mounted radially of the bend 3. As shown, the wipers 4, 5 both wipe a common area A which is thus wiped twice the number of times during each wiping cycle, as the areas B on either side thereof. The two pairs of wipers are driven from a common motor 15 which may be pneumatically or hydraulically operated. The shaft 16 of the motor drives an arm 17, the ends of which are connected with links 28 connected by ball joints 27 with further links 25. The links 25 are connected by ball joints 26 with rocker arms 23, 24 for the shafts 18, 19. The ball joints'enable the drive to be transmitted to the wipers even though the shafts 18, 19 diverge outwardly with respect to each other and with respect to the shaft 16. In order that the wipers 5 shall oscillate faster than the wipers 4, the rocker arms 24 are made shorter than the rocker arms 23. Each wiper blade is carried in a flexible backing strip connected to secondary yokes carried by a primary yoke attached to the wiper arm in the manner described in Specification 702,849. When parked the four wiper blades lie in line, along the bottom margin of the windshield and between the shafts 19. Provision may be made, in well-known manner, to effect the parking, e.g. as shown in Specification 547,808, [Group XXVI]. In a modification, the shafts of each pair of wipers are drivably connected by an endless cable passing around pulleys on the shafts, the primary shafts having rocker arms connected to the motor through links, as already described. The cables are guided on to the angularly displaced shaft pulleys by suitable sheaves disposed between the shafts of each pair of wipers.
Patent GB-869854-A (GB)
Title: Improvements in or relating to members for laterally displacing an electron beam
IPC: H01J29/52
Filed: 1957-08-29
Abstract: 869,854. Cathode-ray tubes. TELEFUNKEN G.m.b.H. Aug. 29, 1957 [Aug. 30, 1956], No. 27223/57. Class 39(1). A cathode ray beam centering device consists of a non-magnetic annular disc 1, having recesses in its inner edge which may be disposed in diametrically opposite pairs. These recesses are filled with powdered permanently magnetic material 3, e.g. iron oxide in the form of a powder or paste which is then magnetised radially with respect to the disc. Two such complete members are mounted on the neck of a cathode ray tube, one behind the other, and each may be rotated independently by means of a lug 2, thereby enabling the electron beam to be centered. In the embodiment shown, there are four recesses, each extending over 60 degrees. In a further embodiment there are only two recesses, each one extending over 120 degrees. The recesses may be totally or partially closed on the inner side thereof.
Patent GB-1312082-A (GB)
Title: Semoconductor devices
IPC: H01L31/10
Filed: 1970-06-05
Abstract: 1312082 Semi-conductor devices PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 5 June 1970 [9 June 1969] 27237/70 Heading H1K In a surface barrier radiation detector, a groove is provided between the electrodes extending to such a position that it penetrates into the depletion layer associated with the barrier in operation.  To produce a high energy particle detector, Fig. 1, an N-type Si wafer 1 is masked and passed through a stream of oxygen to form an inversion layer 3 which is reinforced and contacted by vapour deposition in vacuo of a Au electrode 4. An Al electrode 6 is applied to the lower face of the wafer and a groove 7 is formed so that it intersects the depletion layer 8 produced when the surface barrier junction J1 is reverse biased. This ensures that surface leakage currents Is are prevented from flowing between electrodes 4 and 6 due to the high resistivity of the depletion layer. In a modification Fig. 2 (not shown), the groove is formed in the side edge of the wafer.
Patent GB-1249447-A (GB)
Title: Sulphonylamino-pyrimidines
IPC: C07D239/69
Filed: 1970-06-05
Abstract: 1,249,447. Sulphonylamino - pyrimidines. BOEHRINGER MANNHEIM G.m.b.H. 5 June, 1970 [7 June, 1969], No. 27255/70. Heading C2C. The invention comprises novel compounds (I) (including salts thereof) where A is alkylene, B is alkyl, X is alkylene, R 1  is alkyl, eyeloalkyl, cycloalkyl-alkyl, aryl, aralkyl, alkoxy, cycloalkoxy, alkoxyalkyl, alkoxyalkoxy or alkylmercapto and R 2  is H or alkyl or R 1  and R 2  taken together can also signify 3 to 5 methylenes thus comprising a fused ring; they are made according to standard methods. Pharmaceutical preparations exhibiting, in particular, blood sugar lowering action, contain I as active ingredient; administration may be enterally or parenterally.
Patent GB-1350270-A (GB)
Title: Process for the production of negative continuous-tone images
IPC: G03C5/02
Filed: 1971-04-19
Abstract: 1350270 Negative continuous tone image production using silver halide material AGFA GEVAERT AG 19 April 1971 [18 April 1970] 27270/71 Headings G2C and G2X Negative continuous-tone images or continuous tone colour separation records are produced in a camera or by contact with originals by exposing a photographic material having at least one light-sensitive silver halide emulsion layer, which may be a mixed emulsion layer, to black white or multi-coloured originals of different density ranges, wherein the characteristic curve of the light-sensitive silver halide emulsion layer has a continuously increasing positive gradient in a log I x t interval h ranging at least over the greatest density range of all the originals, and the lower the density range of the originals, the steeper is the part of the characteristic curve in which they are reproduced. The density at the half-way point of the interval h of the characteristic curve of the silver halide emulsion layer may be higher than the value at the start of the characteristic curve by 106-40 per cent of the density range U K  and the curve may have a maximum sag of at most 50 per cent U K  situated in the third or fourth fifth of the interval h. Continuous tone positives may be made from the above produced negatives by exposing a photographic silver halide material having a gradation which can be altered by the colour of the light used, to the negatives. Screened positive images may also be produced from these negatives using a coloured contact screen and a photographic silver halide material having a gradation of more than 7, the optical density of which material can be varied by the colour of the copying light.
Patent GB-267993-A (GB)
Title: Radio frequency amplifier
IPC: H04B1/22
Filed: 1925-10-31
Abstract: 267,993. Cohen, S. Oct. 31, 1925. Drawings to Specification. Condensers.-A condenser for regulating reaction in a wireless set has three plates, each connected to a separate terminal. The outer two plates are fixed, and have between them the larger movable plate which can be adjusted relatively to them.
Patent GB-427078-A (GB)
Title: Device for introducing air in finely divided form into cream or other liquids
IPC: A47J43/12
Filed: 1934-09-25
Abstract: 427,078. Aerating liquids; mixing. SIEBER, P. J., 107, Bremgartnerstrasse, Dietikon, Zurich, Switzorland. Sept. 25, 1934, No. 27544. Convention date, May 11. [Class 14 (i)] [See also Group II] A device for beating cream or the like by means of compressed air comprises a vessel 9 for the cream having a false bottom 10 formed with inclined holes 11. Air under pressure is supplied to the chamber 8 beneath the bottom 10 from a pressure chamber 5 which is charged by a pump 3 driven by a motor 2. Air enters the chamber 8 through a non-return valve 7, which may be adjustable for varying the supply of air. The latter may be charged with liquid or gaseous flavouring media, by suction nozzles or otherwise. The motor, &c. is housed in a casing 1 serving as a support for the vessel 9. In a modification, the pump 3 is driven by a hand crank, and an air purifier may be provided.
Patent GB-173317-A (GB)
Title: Improvements relating to alternating current generators
IPC: H02K27/04
Filed: 1920-09-28
Abstract: 173,317. Wall, T. F. Sept. 28, 1920. Alternating - current commutator machines; reciprocating-machines; exciting.-An alternating- current generator a particularly adapted for supplying current to the solenoids of reciprocating tools such as rock drills, hammers, and the like is excited from an auxiliary alternator b by a field-magnet winding d the circuit of which is in resonance or approximately so with the frequency of the alternator b. The armature of the main generator a is of the commutator type. In order to ensure the electromotive force and the current in the external circuit periodically reaching zero value at the same or approximately the same instant, a commutator generator f is provided as described in Specifications 5883/15 and 119,546. A circuit-breaker g is included in the external circuit for making and breaking the circuit respectively at the beginning and end of a cycle when the potential difference is at or near zero, and leaving the circuit open for one or more subsequent cycles. A resistance and a condenser may be connected across the circuit-breaker g. The main and auxiliary alternators, the auxiliary commutator generator, and the circuit-breaker may be arranged on the same axis and be driven by a motor i. In a modification instead of using a commutator generator f, a mercury rectifier j, Fig. 2, is provided so that only unidirectional current impulses can be delivered to the solenoids of the tools. A small continuous-current generator k is provided for maintaining the are in the rectifier. Any other rectifier such as an aluminium or other liquid rectifier, or a thermionic or like valve, may be used. The return stroke of the tool plunger may be effected by a spring or by a special solenoid actuated at intervals in a similar manner to the main solenoid. With adjustment of the periodicity of the alternator to suit the rate of operation of the tools the circuit-breaker g may be dispensed with.
Patent GB-259052-A (GB)
Title: Improvements in leaf extensions for shelf, table and like surfaces
IPC: A47B88/12
Filed: 1926-04-19
Abstract: 259,052. Beard, I. J. April 19, 1926. Shelves.-A roller-shutter type extending surface for tables, shelves, &c. has side-pieces a, supporting the fixed part of the surface d, which cover the gap left when the device is extended and also slidingly engage the moving rails c. The latter have, on their inner faces, guide grooves g for the laths f which form the extension, and carry on their outer faces dovetailed projections r for engagement with grooves inside the side-pieces a. The invention is shown applied to a bookcase in which a series of superposed shelves can be extended by a single screw p, separation of the parts being prevented by stops m on the rails c.
Patent GB-1472457-A (GB)
Title: Hinge assembly for a vehicle door
IPC: E05D11/10
Filed: 1974-06-21
Abstract: 1472457 Hold-open hinges NISSAN MOTOR CO Ltd 21 June 1974 [25 June 1973] 27630/74 Heading E2F A hinge for mounting a vehicle door so that it can be held in closed, half-open, and fully open positions comprises bodyside and door side brackets 62, 68, a hinge pin 94 which allows pivotal movement between the brackets 62, 68, a cam member 112 mounted on the hinge pin secured for movement with bracket 68, and having three detents 114a, b, c, and a torsion spring 110 one end of which is secured to the bracket 62 and the other end 110b of which engages the cam member. As shown a serrated end portion 96 of the hinge pin engages in a serrated aperture 90 in bracket 68 to cause the pin to move with that bracket, but in a further embodiment (Fig. 8, not shown) the cam member is fast with the hinge pin and carries a locating pin which engages in a hole adjacent the hole 90. Alternatively (Fig. 9 not shown) the hinge pin is rotatable in the cam member which has a locating pin to engage a hole in the bracket.
Patent GB-1314653-A (GB)
Title: Chromium molybdenum ferritic stainless steels
IPC: C22C38/22
Filed: 1971-06-14
Abstract: 1314653 Steel E I DU PONT DE NEMOURS & CO 14 June 1971 [15 June 1970 9 March 1971] 27750/71 Heading C7A A corrosion-resistant steel contains Cr and Mo in the wt percentages within the areas A 1 , A 2 , B, C 1 , C 2  and D of the Figure and also contains up to 0À01% C and up to 0À02% N (C+N, 0À025% maximum), 0-0À6% each of Al, Ti or Nb, 0-4% Co, 0-3% Ni, 0-2% Si, 0-1À5% Rn, 0-1% Mn, 0-0À3 Pt, 0-0À2% An and 0-0À1% each of Ir, Rh or Os. Incidental impurities may include 0À01% S and 0À01% P.
Patent GB-262237-A (GB)
Title: Improvements in fountain pens
IPC: B43K23/12
Filed: 1925-11-05
Abstract: 262,237. Barker, J. Nov. 5, 1925. Pen-point protectors; guards for penholders.-In a fountainpen of the kind having a cap adapted to be retained in place on the barrel by resilient means engaging an annular groove in the barrel, the resilient means is in the form of a catch 11 arranged to project, under the influence of a spring, through a hole in the cap into the annular groove 2 in the barrel, the end of the member carrying the catch being arranged to facilitate its removal from the groove 2. As shown in Figs, 2 and 3, the spring is in the form of a split ring 9 arranged in a groove in the cap and having overlapping ends, the outer one of which is bent up to serve as a finger-piece. A second groove is formed in the outer end of the barrel engagement by the catch 11 when the pen is in use. In a modification, the inner end of the ring 7 is provided with ears, in which a lever, carrying the catch, is pivoted, the outer end of the lever being engaged by the outer end of the ring so that the catch is normally held in position to engage the groove in the barrel. According to a further modification, the arm 15 by which a pocket clip is secured to the cap is extended longitudinally along the cap and serves as the spring for carrying the catch 16.
Patent GB-225041-A (GB)
Title: Improvements in collapsible cardboard boxes or the like
IPC: B65D5/52
Filed: 1923-11-06
Abstract: 225,041. Hutton, R. W. Nov. 6, 1923. Lids; combined with means for displaying advertisements.-The lid 5 of a cardboard or like box is provided wth side flanges 6 which penetrate vertically into slots 8 in the side walls 1 to hold the lid in an inclined or vertical position to display specimens 11 of the contents on the outside of the lid. Tongues 10 may be pressed out to support the specimens or the specimens may rest in apertures in the lid. To facilitate access to the contents of the box vertical slits are formed in the rear wall so that a part of the wall can be bent downwards and hinged portions may be provided in the front wall to provide additional display surface. Transparent or translucent material which mav be coloured to form a picture or design and is adapted to be illuminated by an electric lamp or by light reflected by a mirror placed behind the lid may be provided in the apertures in the lid.
Patent GB-654671-A (GB)
Title: Improvements in the preparation of medicinal vitamin-c tablets
IPC: A61K31/375
Filed: 1947-10-17
Abstract: A mixture of cocoa butter, sugar, and cocoa is liquefied by heating to between 35 DEG  and 100 DEG C., the liquid is mixed with at least 10 mg. of vitamin C per g. of liquid, and the mixture is solidified as tablets.  A fat-soluble flavouring, e.g. orange or lemon oil may be incorporated.  According to an example, a mixture of 42 per cent of cocoa butter, 48 per cent of sugar, and 10 per cent of cocoa is liquefied at 40 DEG C., powdered vitamin C is mixed into the liquid in the proportion of 6 g. of vitamin C to 94 g. of liquid, and the mixture is solidified at 4 DEG C. as 1 g. tablets.
Patent GB-1454924-A (GB)
Title: Modulation systems for the production of frequency-shift keyed  signals
IPC: H04L27/12
Filed: 1974-06-24
Abstract: 1454924 Data transmission; f.s.k. modulators SIEMENS AG 24 June 1974 [29 June 1973] 27871/74 Heading H4P A f.s.k. modulator has for each binary valve a different frequency square wave oscillator feeding into a fixed frequency divider through a gating circuit controlled by binary signal input. The gating circuit may comprise NAND gates N1-N3 and inverter I1 and the frequency divider may comprise a dual circuit counter 21, 22. It is stated that phase discontinuities on change from one frequency to another are reduced in proportion to the total division ratio, i.e. in the case of a counter, discontinuity is halved at each successive stage F1, F2 &c.
Patent GB-1014607-A (GB)
Title: Improvements in photographic sensitive silver halide emulsions
IPC: G03C5/50
Filed: 1962-07-20
Abstract: 1,014,607. Photographic materials. KODAK Ltd. July 20, 1962 [July 20, 1961]. No. 27972/62. [Addition to 935,249]. Heading G2C. A light-sensitive material comprising an unfogged silver chloride, bromide or chlorbromide emulsion of the surface latent image type (Type II) and in the same layer or adjacent thereto a fogged silver halide emulsion of the latent image type (Type I) is developed with a developer having a greater solubility for silver bromide than that of a developer containing 5 grams of potassium bromide and 20 grams of anhydrous sodium sulphite per litre and less than that of a developer containing 35 grams of potassium bromide and 90 grams_ of anhydrous sodium sulphite, the solutions being free of antifoggants and other addenda which increase the rate of solution of silver bromide. Preferably the ratio of silver halide in the surface latent image emulsion to the external latent image emulsion is between 42:1 and 1:3. In the examples, the developers contain from 10 to 60 grams of anhydrous sodium sulphite and from 10 to 34. 5 grams of potassium bromide per litre.
Patent GB-351343-A (GB)
Title: Improvements in typographical composing machines
IPC: B41B11/18
Filed: 1930-09-19
Abstract: 351,343. Type-bar-making machines. HART, H., 9, Kingsway, London.-(Mergenthaler Linotype Co. ; 29, Ryerson Street, Brooklyn, New York, U.S.A.) Sept. 19, 1930, No. 28046. [Class 100 (iii).] Assembling matrices.-In order to prevent damage to the side walls of the matrix characters resulting from the impact thereon of following matrices as they descend, the assembler is displaced rearwardly at its receiving end, so that the character side walls of the matrices contained therein stand out of the path of the descending matrices, and means are provided for deflecting the matrices edgewise to permit them to enter the assembler. The assembler C, Fig. 1, is inclined slightly from front to rear, so that, as shown in plan in Fig. 2, its receiving end is offset in relation to the assembling shoot B, and the descending matrices strike the matrix last assembled at a point clear of its character side walls. The matrices are deflected by bevelled surfaces C7 on the front wall of the assembler. These surfaces are engaged by the ears of the descending matrices, which are thereby displaced laterally under the action of the star-wheel.
Patent GB-319690-A (GB)
Title: Improvements in processes for extracting magnesia from dolomite
IPC: C01F5/16
Filed: 1929-09-16
Abstract: 319,690. Rheinisch - Westfõlische Kalkwerke. Sept. 26, 1925, [Convention date]. Magnesium oxide, hydroxide, and carbonate; calcium carbonate.-In a process for the extraction of magnesia from dolomite, in which dolomite is burnt at a temperature which decomposes only the magnesium carbonate, and the magnesia is separated from the unchanged calcinm carbonate by windsifting, the half burnt and ground dolomite is treated, before separation, with water, and preferably also carbon dioxide, to convert the magnesia into hydroxide or basic carbonate.