baber/WOPTO huggingface dataset:
Patent GB-984990-A (GB)
Title: Process for the production of half-tone pictures
Inventor: WUNDERLICH PETER
IPC: G03G13/02
Filed: 1963-03-21
Abstract: 984,990. Electrophotographic processes. PENTACON DRESDEN KAMERA-UND KINOWERKE VEB. March 21,1963,No. 11275/63. Drawings to Specification. Heading G2H. An electrophotographic coating is precharged screen-wise before being exposed and developed in known manner. The charging may be effected by placing a wire screen on a conducting base in contact with the photoconductive coating and applying a potential between the base and a counter electrode behind the photoconductive layer. Alternatively,a corona discharge may be produced from a plate having a plurality of paints held adjacent to but not in contact with the photoconductive coating.
Patent GB-1170166-A (GB)
Title: Basic Dyes of the Perinaphtholactam Series
IPC: C09B57/06
Filed: 1967-03-10
Abstract: 1,170,166. Basic perinaphtholactam dyestuffs. BADISCHE ANILIN- & SODA-FABRIK A.G. 10 March, 1967 [12 March, 1966; 25 June, 1966], No. 11284/67. Heading C4P. The invention comprises basic perinaphtholactam dyes of the general formula wherein R<SP>1</SP> is H or an alkyl, cycloalkyl, aralkyl or aryl radical which may be attached to the naphthalene nucleus to form a ring; R<SP>2</SP> is hydroxy, alkyl or aryl, R<SP>3</SP> is H or alkyl ; R<SP>4</SP> is H, alkyl or aryl; A<SP>(-)</SP> is an anion and Ar is a pphenylene radical optionally substituted by alkyl or alkoxy radicals, and the naphthalene nucleus may be substituted by halogen or alkyl, alkoxy, acyl, acyl-amino or dialkylamino groups. They are prepared by an optionally N-substituted perinaphtholactam with a pyrazoline of the formula wherein Ar, R 2 , R 3  and R 4  are as above in presence of a condensing agent, e.g. phosphorous oxychloride or bromide or phosphorous tri- or penta-chloride. The reaction takes place at 50-170 C. optionally in presence of a diluent, e.g. chlorobenzenes, and a Lewis acid, e.g. zinc chloride or tin tetrachloride. The dyes which may be obtained in the form of a chloride, sulphate, nitrate, acetate, formate, methyl sulphate, arylsulphate, tetrachlorozincate or tetrafluoroborate are used for dope-dyeing or printing acrylonitrile or vinylidene cyanide polymers or copolymers in blue shades.
Patent GB-548517-A (GB)
Title: Piezoelectric crystal apparatus
IPC: H03H9/13
Filed: 1941-09-05
Abstract: 548,517. Piezo-electric crystals. STANDARD TELEPHONES & CABLES, Ltd. Sept. 5, 1941. No. 11368. Convention date, Sept. 18, 1940. [Class 40 (v)] A crystal is furnished with electrodes which energize a central portion only of the crystal, the ratio of the area of the electrode to that of the major surface of the crystal being chosen to give the maximum oscillation at the desired frequency. Fig. 1 shows a crystal plate having small central electrode 2 and the edges of which may be slightly thinned for frequency correction and to reduce spurious frequencies. The crystal is arranged to be clamped at the four corners between two plates 5, Fig. 6, having raised corners 4 and raised electrode portions 2 giving a very small air gap when the crystal is in position. Fig. 7 shows a crystal with partial electrodes 2 fixed on the surface of the crystal and having narrow extensions 10, 11 to serve as connecting leads which are folded round on to both surfaces at the corners to short circuit the clamped parts. In Fig. 11 the partial electrodes 2 are of such a shape that they coincide over a small central portion forming the effective part of the crystal. The extensions of the electrodes lap over the corners which are soldered to leads 22 attached to supporting terminals 23 in a sealed glass container. In all the modifications, the area of the electrodes is selected in accordance with a graph (Fig. 4 not shown) relating the frequency of maximum oscillation to the ratio of electrode area to the area of the crystal.
Patent GB-783639-A (GB)
Title: Improvements in or relating to telephone sets
IPC: H04M1/08
Filed: 1955-04-20
Abstract: 783,639. Telephone sets. SIEMENS & HALSKE AKT.-GES. April 20, 1955 [April 22, 1954], No. 11412/55. Class 40 (4). Contact springs 4 in a table set are controlled by an angle lever 3, one end of which is engaged by the earpiece of the handset when resting in a depression 1. The lever, which is made of polystyrene, projects through a slot 13 and is pivoted on knife-edges 5, 6 which respectively engage bearings 7 and the base-plate 8 of the spring. The lever 3 engages a spring 12 to control the spring set. The spring set may be arranged vertically (Fig. 3, not shown).
Patent GB-811280-A (GB)
Title: Improvements in extractor ventilators
IPC: F24F7/02
Filed: 1957-04-08
Abstract: 811,280. Roof ventilators. GREENWOOD'S & AIRVAC VENTILATING CO. Ltd., and HUGHES, B. D. Nov. 6, 1957 [April 8, 1957], No. 11432/57. Class 137 A ventilator suitable for the roof of a building comprises two L-section base members 1, two T-shaped end members 3 having flanges 3<SP>1</SP>, a top plate 5 projecting over the sides of the duct formed by the upright portions 1<SP>1</SP> of the base members 1 and secured to the end members 3, and internal baffles 8 fixed beneath the projecting portions of the top plate. The flange formed around the base enables the ventilator to be fixed to a roof and in a modification (Fig. 4) the duct 4 may be fitted with simultaneously operable dampers 20 connected by the bar 23 and link 24. A further modification provides a glazing in the top plate 5.
Patent GB-326063-A (GB)
Title: Improvements in spring controllers
IPC: F16F1/22
Filed: 1929-04-13
Abstract: 326,063. Bagnall, E. April 13, 1929. Laminated springs. - A controller adapted to cause the leaves 1 of a vehicle spring to be bound more tightly together both on a shock and on the rebound consists of a pair of flexible members, each having two points of contact substantially apart on opposite sides of the spring, the tensional engagement of the members with the spring being adjustable. The spring is adapted to be lubricated through its own action. In one form, one flexible member 7 acts on the spring S through an adjustable set-screw 15 at one end and a ball 11 at the other, while the other flexible member 12 is slightly curved and rests on the spring at two points directly over the set-screw 15 and the ball 11. Shackles 18 hold the members 7, 12 in contact with the spring by means of transverse bolts 19, 20. Movement of the spring also causes the gap 13 between the member 12 and the spring to decrease or increase and one is drawn from the container 22 into the gap and thence to the spring leaves.
Patent GB-1344737-A (GB)
Title: Shuttle for travelling wave shed looms
IPC: D03J5/06
Filed: 1971-04-27
Abstract: 1344737 Dummy shuttles VYZKUMNY USTAV BAVLNARKSY 27 April 1971 [28 April 1970] 11497/71 Heading DIE A dummy shuttle for a travelling wave shed loom, which carries sufficient weft for one pick, has a rotatably mounted bobbin therein with a recess in its interior containing braking means acting on the rotatable cylindrical side wall 7 of the bobbin. A further yarn brake 39 is provided acting on the yarn leaving the shuttle, and which consists of two laminae biassed towards each other. The braking means may consist of a magnet 14 mounted within the bobbin and either attracting a ferromagnetic cap 20 of the bobbin or repelling a further magnet on the bottom of the bobbin so that the underside 6 of the bobbin is pressed against the bottom of the recess in which the bobbin is mounted. Alternatively a brake block (34) Fig. 3 (not shown) positioned in a bore in the interior of the bobbin may be biassed against the rotating part 7 of the bobbin by a spring (37). The bobbin surface may be coated with a substance having a high coefficient of friction such as rubber, or may taper down to a neck (40) Fig. 5 (not shown) to trap the last coil of weft as it is pulled off and maintain it taut.
Patent GB-1267675-A (GB)
Title: Variable resistance device
Inventor: SOBOL WOLDIMAR
IPC: H01C10/30
Filed: 1969-03-04
Abstract: 1,267,675. Variable resistors. RELIANCE CONTROLS Ltd. 3 March, 1970 [4 March, 1969], No. 11524/69. Heading HIS. In a variable resistor, Fig. 1, such as arcuate resistance element, the cover 29, which is rotatably retained on the base 16 by a flange 35 (Fig. 4) on the flexible skirt 34 engaging the groove 15, has an external stop 36 (Fig. 1) which engages the fixed stop 27 on the base to limit rotation. Grooves (Fig. 3, not shown) in the interior of the cover locate the crossshaped wiper 28 (Fig. 4), a ramp in one groove urging part 31 of the wiper towards the fixed contact plate 18. The plate 18 is carried on an insulated pillar 17 which is surrounded by a wall 12 which carries the resistance element 11. Extensions 14 (Fig. 1) of the wall 12 define the minimum radius of the innermost portion of the track. Terminals 21, 22, 23 extend through the space between 12 and 17 from locations 42, 43 formed from projections outwardly from the base. Contact between the resistance terminals 21, 22 and the resistance is made through gaps between portions of the wall 14. Specification 1,267,676 is referred to.
Patent GB-441464-A (GB)
Title: Improvements relating to manufacture of electron emitters and alloy used therein
IPC: C22C19/00
Filed: 1934-04-17
Abstract: Homogeneous alloys for use as electron-emitting bodies and containing copper, nickel, and barium with or without chromium are made either by introducing the barium into a melt of the other metals, while excluding air or by melting the other metals, covering the melt with a viscous slag and adding the barium by inserting it beneath the surface of the melt.  Sufficient proportions of copper and barium are used so that 0,1-8,5 per cent of barium will be held in solution by the copper.  The barium may be wrapped in nickel foil before insertion in the melt and the melt may be superheated and cooled to a temperature slightly above its melting point before the barium is added.  The melt is then allowed to stand for a short time, e.g. 30 seconds to 2 minutes before being poured.  The viscous slag comprises 32,8 per cent of barium oxide, 8,7 of boron trioxide, 5,4 of potassium oxide, 13,1 of aluminium, and 40,2 of silica.  The alloys made comprise 5-95 per cent of copper, 0,1-8,5 of barium, and the rest nickel or 5-95 of copper, 0,1-8,5 of barium, 0,1-25 of chromium and the rest nickel.  Alloys containing 46 per cent of copper, 46 of nickel, 4 of chromium and 4 of barium, are used in gaseous discharge tubes described in Specifications 427,679, [Group XXXVI], and 440,100, [Group XL].
Patent GB-1175153-A (GB)
Title: Doll.
Inventor: GLASS MARVIN IRVING
IPC: A63H3/28
Filed: 1967-03-13
Abstract: 1,175,153. Doll. M. I. GLASS [trading as MARVIN GLASS & ASSOCIATES]. 13 March, 1967 [16 March, 1966], No. 11561/67. Heading A6S. A doll which will simulate a sneeze has means interconnecting the arms 14, 16 and head 12 comprising a two part shaft 32 composed of a portion 34 fixed in cam plate 30 so as to turn therewith and portion 36 fixed in cam plate 38 fixed to flange 40 on a shoulder joint 42; portions 34 and 36 are joined by swivel portion 44. Swinging movement of arm 14 causes rocking of shaft portion 34 which in turn causes a spasmodic movement of head 12. Shaft portion 34 has fixed thereon a latchlike actuating finger 54 and raising of arm 14 causes clockwise movement of the finger, the upper portion of which moves across surface 56a and then engages the rear of latch element 56. Lowering of left arm 14 causes counterclockwise movement of finger 54 which pushes against latch 56 and causes clockwise rotation of plate 48 and head 12 about pin 46 thus drawing back the head. An instant later point 64 escapes from latch element 56 whereupon spring 50 returns plate 48 and head 12 to their normal positions with a snap, and lower point portion 72 on plate 48 encounters end plate 74 of a bellows unit 76 which is quickly compressed by the motion of plate 48, and a noisemaker 78 is activated by the resulting puff of air thereby simulating a sneezing sound.
Patent GB-1077818-A (GB)
Title: Switch gear
IPC: H01H50/32
Filed: 1965-03-18
Abstract: 1,077,818. Locking switches. STOTZ KONTAKT G.m.b.H. March 18, 1965 [April 3, 1964], No. 11575/65. Heading H2B. Switch gear comprises two switches 1, 2 provided side-byside with their armatures interlocked by a beam 11 such that when one switch is energized and operates, beam 11 is moved to a position with its mid-point 12 adjacent a switch casing 13 or a stop provided between the switches so that energization of the other switch causes beam 11 to abut switch casing 13 or stop to prevent rotation of the beam thereby locking the other switch against operation. Beam 11 is mounted at each end on a shaft 9, 10 between two plates 7, 8 held in recesses 5, 6 in tripping pins 3, 4 on switches 1, 2.
Patent GB-1421008-A (GB)
Title: Shock absorber
IPC: F16F9/36
Filed: 1973-03-09
Abstract: 1421008 Hydraulic shock absorbers; seals MONROE BELGIUM NV 9 March 1973 [13 March 1972] 11626/73 Headings F2S and F2B In a pressurized hydraulic piston-cylinder shock absorber the piston-rod guide and the end closure member are combined in a single member 36 having a cavity 46 in which is disposed part of a sealing element 52, the element having an integral portion 60 extending radially outwardly adjacent the outer side of the member 36 with a peripheral part 62 engaged between the member 36 and the cylinder to provide a seal between them, and two axially spaced radially inwardly projecting portions 56, 58 engaging the piston-rod 24, the sealing element being held against the piston-rod by an annular spring 70, and by the pressure of the liquid in the cylinder, communicated to the cavity 46 via passages 48, 50. An arrangement for a tube-within-a-tube type shock absorber is also depicted (Fig. 2, not shown).
Patent GB-732293-A (GB)
Title: Improvements in or relating to self-priming pump systems, particularly for deep wells
IPC: F04D9/06
Filed: 1953-04-28
Abstract: 732,293. Centrifugal pumps. JACUZZI BROS., Inc. April 28, 1953 [May 12, 1952], No. 11693/53. Class 110 (1). In a pumping system comprising a number of stages, the stages are divided into two groups, the output of the first group passing through a pressure line to an injector, and a return line connecting the injector to the input of the second group and the input of the first group and the output of the second group are connected to a priming chamber, the priming chamber being connected to a pressure tank. Water is pumped by two stages 5 and 7 in series and delivered by way of passages 93 and 81, a weir 89, passage 75 and a pressure pipe 119 to an injector 121 within a deep well. The water, together with additional water pumped from the well by the injector, returns by way of suction pipe 123, check valve 125 and passages 77 and 91 to two further stages 9 and 11 in series. The water is discharged by way of a chamber 85, passage 79 and pipe 101 to a priming chamber 111. Some of the water entering the chamber 111 is returned to the first stage 5 through a pipe 103 concentric with pipe 101. The remainder of the water preferably by way of a check valve 115, to a pressure tank 109 which supplies a pipe line 131. Air entrained in the water separates out, and helps to replenish the air cushion in the tank, 109. Excess air is relieved through a float-controlled valve 133. The pump driving motor 19 is controlled by a pressure switch 129 in accordance with the pressure in the tank 109. Siphoning off of the contents of the priming chamber 111 when the pump is not operating, due to draining of pipes 119 and 123, is prevented by the weir 89, air inlet valves 86 and 90 and the check valve 125. Valve 125 may be omitted. Valve 86 also functions to prevent the development of sub-atmospheric pressure in the pump and the priming chamber when the pump is starting. Float-controlled air release valves, functioning in :response to rise of water level in the weir passage and in the upper part of the suction line may be used to release air at these places during starting. Alternative connections 135 and 137 for the pressure and suction pipes respectively, permit the mounting of the pump directly over the well if desired. In a modification, the priming chamber is structurally separate from the pressure tank and is connected to it by a pipe connection which includes a check valve. In this case, the pipe 101 may be eliminated and the opening 98 sealed, connection to the priming chamber being made instead by a pipe connected at an opening 141, which is unplugged for this purpose. In a further modification, the priming chamber surrounds and encloses the pump.
Patent GB-789784-A (GB)
Title: Improvements in and relating to exhaust silencers
IPC: F01N1/06
Filed: 1956-04-18
Abstract: 789,784. Exhaust-silencers. SOC. D'ETUDES ET D'APPLICATIONS INDUSTRIELLES COMMERCIALES ET IMMOBILIERES INTERTECHNIQUE. April 18. 1956 [April 18, 1955], No. 11817/56. Class 7(2) In a silencer whereiri exhaust gases flow successively through a number of tubes 21, 22 and 23, Fig. 4, and wherein each tube communicates -with the following' tube through an intercommunicating system comprising on the one hand holes 24, 25 in the walls of the tubes and a chamber 19 disposed around these apertured portions of the 'tubes, and on the other hand through a balancing chamber 17 joining the exit end of the tube 24 with the inlet end of the tube 25, the holes and dimensions of the balancing chamber are such  that in each system and for one half of the total gas flow the gas pressure losses through the holes and the balancing chamber respectively are equal. As shown, in Figs. 4 and 5, the silencer comprises a casing 11 divided by partitions 13, 14 and 15 into balancing chambers 17, 18 and intercommunication chambers 19', 20, the inlet and discharge tubes 21, 23 being provided with holes 24, 26 to allow gases to flow from the tubes into the chambers 19, 20, and the tube 22 having holes 25 and communicating with both those chambers. Gases flow from the tube 21 into the chamber 17, from the latter to the chamber 18 via the tube 22, and then into the tube 23,to be discharged from the silencer. In a modification, a casing 27, Fig. 7, is provided with balancing chambers 32, 33 which communicate via apertures in partitions 29, 30 with an intermediate chamber enclosing apertured portions of two tubes 35, 36. An exhaust system shown in Fig. 10, includes silencers S<SP>1</SP> and S<SP>2</SP>, as shown in Fig. 4 and Fig. 7 respectively, the length r; s, of the exhaust pipe between the silencers being 2.64 times the length p, q of the pipe between the engine and the silencer S<SP>1</SP>.
Patent GB-375749-A (GB)
Title: Automatic coin freed telephone exchange
IPC: H04M17/02
Filed: 1932-04-25
Abstract: 375,749. Automatic exchange systems. AESCHLIMANN, W., 60, St³ssistrasse, Zurich, Switzerland. April 25, 1932, No. 11879. Convention date, May 16, 1931. [Class 40 (iv.)] The collecting magnet KM at a prepayment station is connected to the line through a neon lamp GL. At the end of a conversation, alternating current flows from a transformer TV over contact Z3, and a direct current circuit is closed through the magnet KM and a relay KR. Should this circuit not be completed, the non-operation of the relay KR gives an alarm.
Patent GB-1236896-A (GB)
Title: Line amplifier for carrier transmission systems
IPC: H03F1/34
Filed: 1970-03-12
Abstract: 1,236,896. Repeater amplifier. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. 12 March, 1970 [15 March, 1969], No. 11914/70. Heading H4R. Repeater for a carrier transmission system has an input transformer U one terminal of the secondary of which is connected direct to the amplifier V input while the other terminal is connected to a point 5 in a negative feedback circuit including a resistance Z and two complex impedances A and A<SP>1</SP> whose values are such as to be reciprocally related to the value of the resistance, e.g. A<SP>1</SP>=(Z/A). Feedback is applied from the output of amplifier V via resistance W. As described, the impedances of the networks A and A<SP>1</SP> are chosen to provide appropriate frequency characteristics for the overall gain without altering the input impedance or output impedance of the amplifier. By using a parallel resonant circuit tuned to the highest frequency in the transmission band for the network A, the line amplifier has a high gain and low noise factor at the upper end of the band with a lower gain at lower frequencies, eliminating the necessity for a pre-equalizer while only slightly degrading the noise factor at low frequencies relative that at high frequencies.
Patent GB-542650-A (GB)
Title: Improvements in and relating to the manufacture and production of viscose
IPC: D01F2/08
Filed: 1940-07-19
Abstract: 542,650. Cellulose xanthate. COURTAULDS, Ltd., HEGAN, H. J., and WILLIAMS, A. H. July 19, 1940, No. 11918. [Class 2 (ii)] In the production of viscose, the cellulose xanthate is treated with oxygen or with a mixture of gases containing more than 25 per cent. of oxygen. The treatment removes impurities which on acidification give rise to sulphuretted hydrogen and carbon bisulphide, and effects a reduction in the viscosity of the cellulose xanthate. The treatment may be effected by passing oxygen from a cylinder into the mixing churn to remove excess of carbon bisulphide and air remaining in the churn and to replace them by oxygen practically free from nitrogen. The oxygen is preferably forced in so that when the supply is cut off the churn is under a small excess pressure. As the re-action proceeds the pressure may fall below atmospheric pressure or the pressure may be maintained by adding further doses of oxygen. The churn may be rotated. The viscose may be used for the production of artificial threads, filaments, and the like.
Patent GB-1084606-A (GB)
Title: Turbine rotor assemblies and blades therefor
Inventor: SNELL LEONARD STANLEY
IPC: F01D5/08
Filed: 1965-03-20
Abstract: 1,084,606. Turbine blades. BRISTOL SIDDELEY ENGINES Ltd. March 15, 1966 [March 20, 1965], No.11947/65. Heading F1T. Each turbine blade 5 is mounted on the rotor disc 2 by the serrated limbs 6 of a bifucated root engaging a correspondingly serrated projection 3 on the disc. A chamber 9 open at its upstream end is formed between limbs 6 and is supplied with cooling air. The chamber 9 converges towards its closed downstream end, Fig. 2 (not shown), and communicates through intermediate passages (11) in the blade platform 10 with cooling passages (12) extending longitudinally through the blade aerofoil portion. The intermediate passages (11) do not have any component of direction circumferentially of the rotor disc 2. Cooling air also passes through passages 13 between the limbs 6 of adjacent blades.