baber/WOPTO huggingface dataset:
Patent GB-670360-A (GB)
Title: Improvements in or relating to display stands
IPC: G09F1/14
Filed: 1949-07-08
Abstract: 670,360. Signs. TAYLOR, W. Oct. 6, 1950 [July 8, 1949], No. 18158/49. Class 3(ii). A display device comprises a heavy base member a having an integral short upstanding spigot or socket b for readily detachable engagement by a socket or spigot c at one end of a vertical pillar d carrying rigidly at its upper end a frame e to which a panel f is secured. The frame e is formed as a split ring bolted to the pillar d and the panel f is secured to it by clips h. The base member a is made of reinforced concrete.
Patent GB-404549-A (GB)
Title: Means for effecting the explosion of the explosive charge of projectiles on reachinga target
IPC: F42C1/10
Filed: 1933-06-26
Abstract: 404,549. Projectile fuzes. SOC. METALLURGICA ITALIANA, 84, Via Vittorio Veneto, Rome. June 26, 1933, No. 18196. Convention date, Sept. 17, 1932. [Class 9 (i).] The primer 4 for exploding the charge 2 of a projectile 1 is situated at the inner end of an empty passage 6 open at the nose of the projectile, so that the primer is detonated on impact by the action of the air in the passage 6 without the assistance of a percussion member. The primer charge may be covered by a disc 7. This projectile is intended especially for use against slightly resistant targets such as aeroplanes and airships.
Patent GB-266600-A (GB)
Title: Improvements in axle boxes for tramcar and like vehicle wheel axles
IPC: B61F15/12
Filed: 1926-07-21
Abstract: 266,600. Hoffmann Manufacturing Co., Ltd., and Smith, C. H. July 21, 1926. Removing wheels and other articles from shafts.-The axle-box or bearing housing D of tramcar and like vehicle wheel axles and the antifriction bearings contained therein is removable as a unit from the hornplate-box H by a screw or screws threaded into a part of the removable member and abutted against a fixed part, such as the hornplate-box or axle, or conversely. The axle sleeve B, Fig. 1, has a screw thread B<1> which is engaged by a hollow bolt G, Fig. 2, which also bears on the axle eni when it is desired to remove the axle-box. In a modification the flange D<2> of the axle-box has tapped holes to accommodate screwed bolts which bear on the hornplate box H. Alternatively the withdrawing bolts may screw into lugs on the hornplate-box and bear on the axle-box. Specification 176,697. [Class 12 (i), Bearings &c.], is referred to.
Patent GB-298525-A (GB)
Title: Improvements in or relating to machines for opening and cleaning cotton
IPC: D01G9/04
Filed: 1927-07-09
Abstract: 298,525. Newell, W., and Brooks & Doxey (1920), Ltd. July 9, 1927. Openers &c.-In a machine for opening and cleaning cotton, the outlet 9 for the cleaned cotton is adjacent to the feed inlet 8 and the grid 10 covers more than half the periphery of the cylinder 7. A casing 11 surrounds the grid and is provided in the end walls with regulatable air inlets 16, through which air is drawn by the suction through the outlet 9. This current of air carries back into the main stream fibres which have passed between the bars of the grid. The dirt falls down into the bottom of the casing 11 and is removed by a worm 14 or other means. The grid bars may be adjustable as to their inclination. The cylinder 7 is of sheet steel and is provided with duplex teeth 17 secured by shallow headed bolts held by lock nuts and spring washers.
Patent GB-146409-A (GB)
Title: Improvements in centrifugal pumps for acids
IPC: F04D7/06
Filed: 1920-07-02
Abstract: 146,409. Chemische Fabriken vorm. Weiler-ter Meer. Nov. 19, 1917, [Convention date]. Addition to 145,803. Leakage-preventing devices; disk-supported blade pumps.-In order to prevent all the acid in the casing b surrounding the shaft from being drawn away by the suction of the impeller and thereby permitting entry of air to the pump, the pump described in the parent Specification is provided with a connexion between the suction inlet h and the casing b. This connexion may be a channel i in the casing or a separate pipe.
Patent GB-596093-A (GB)
Title: Improvements relating to electric pulse signalling systems
IPC: H04J3/10
Filed: 1945-07-18
Abstract: 59 6,093. Pulse modulation; telegraphy. SIEMENS BROS. & CO., Ltd., REED, M., and MOSS, S. H. July 18, 1945, No. 18419. [Classes 40 (iii) and 40 (v)] For the reduction of pulse shape distortion in a system of line pulse transmission, the pulses are transmitted as curbed pulses the ratio of the amplitudes of the pulse components being other than unity. There may be more than two components per pulse and the ratio of their amplitudes or amplitudes and durations may be varied by means provided therefor in the system. In one circuit for producing curbed pulses c, Fig. 2, pulses a of constant amplitude and duration and negative-going are applied to the grid of valve V1, Fig. 1, the anode circuit of which includes a resistance equal to the characteristic resistance of a delay network N shunted thereacross and short-circuited at the other end. Pulses b appear at the anode of V1 the curbing component being produced by the reflection of the input pulse in the delay network which has a delay time, there and back, equal to the duration of the input pulse. Pulses b pass to the output terminal B through the cathode-follower buffer valve V2 the output circuit of which includes diodes V3, V4 arranged to limit the curbing and primary pulses respectively and independently at levels adjusted by potentiometers P3, P2, respectively. In an alternative circuit, Fig. 3, the input pulses from terminal A are differentiated by the circuit C, R1, the resulting trailing edge positive pulse causing the flip-flop valve pair V1, V2 to be triggered to produce a positive pulse at the anode of V2. The duration of this pulse is controllable by the variable resistance R2 connecting the control grid of V2 to the H.T. supply. The primary pulse and derived pulse are applied to valves V4, V3, respectively having a common anode load from which the mixed desired waveform is fed to output terminal B. The amplitudes of the two components are independently adjustable by the variable cathode resistances R3, R4. Further components may be added to the curbed pulse by further flip-flop stages and mixer valves, or by further delay network circuits of the type shown in Fig. 1.
Patent GB-1220857-A (GB)
Title: Improvements in reciprocating electromagnetic diaphragm pumps
Inventor: VALROGER PIERRE ALBERT MARIE D
IPC: H02K29/06
Filed: 1968-04-18
Abstract: 1,220,857. Reciprocating pumps. P.A.M. DE VALROGER AND M. LAYET. April 18, 1968 [April 21, 1967], No.18439/68. Heading F1A. [Also in Division H2] In a reciprocating electromagnetic diaphragm pump the diaphragm is connected to a rod on which is slidable a permanent magnet armature resiliently coupled to the diaphragm and actuated in at least one direction by triggering a transistor to pulse an operating coil. Fig.1 shows one embodiment in which the armature comprises a permanent magnet 21 clamped between cup-shaped, soft-iron polepieces 22, 23 and slidable on the roof 26 between springs 27, 30, the latter abutting against a sleeve 31 fixed to the rod. The operating coil B m  is located between the pole-pieces together with a pick-up coil B c  in which the transistor switching current is induced. As shown in Fig. 5, the coil B m  is connected in series with the collector and emitter of the transistor TR across the supply, the pick-up coil B c  being connected between the positive supply terminal and the transistor base. A decoupling capacitor C 1  and resistor R ensure automatic starting of the pump since the initial charging current of the capacitor through the resistor when the pump is switched on biases the transistor base just sufficiently to allow current to flow through coil B M .To prevent reaction coupling between the coils B c , B m , they may be placed in separate magnetic fields, Fig. 2 (not shown). In this construction the armature has two permanent magnets clamped together by three cupshaped pole-pieces which provide two air gaps for the coils. Fig.6 shows a double-diaphragm pump in which a permanent magnet armature 43. . .45 is caused to oscillate between springs by coils B M , Fig.7, arranged around the armature, a pick-up coil B c  being arranged between two of the main coils. To avoid the necessity for a bulky pick-up coil when a high power transistor is used, a second transistor may be used to amplify the switching current. Such an arrangement may be used with the double diaphragm pump of Fig. 8 which has two operating coils B M1 , B M2  acting on a stack of four annular permanent magnets A 1 . . .A 4  forming part of an armature similar to that shown in Fig.6. The pick-up coil B c  is mounted between the coils B M1 , B M2 . When the pump is switched on a resistor braces the reload transistor sufficiently to cause a weak current to flow through the first transistor and coils B M1 , B M2  . This produces a slight upward movement of the armature which induces a voltage in coil B c  and consequently increases the flow of current through the operating coils. Spring 71 ultimately stops the armature and the return stroke induces a reverse voltage in coil B c  which blocks the transistors until the armature is reversed again by spring 72. To increase the power of the pump a push-pull switching arrangement supplying propulsive pulses to the armature in each direction may be used.
Patent GB-477890-A (GB)
Title: Improvements in and relating to radio frequency receiving systems
IPC: H04H20/77
Filed: 1936-07-03
Abstract: 477,890. Distributing music. STRAFFORD, F. R. W., and BELLING & LEE, Ltd. July 3, 1936, No. 18452. Drawings to Specification. [Class 40 (iv)] [Also in Group XL] A receiving arrangement for providing amplification over a wide band of very high frequencies comprises a number of separate channels fed from one or a number of aerials and each consisting of a frequency changing, amplifying, and frequency restoring stages, the outputs of the channels being combined and fed to one or more receivers. The frequency changing and amplifying arrangements may be located adjacent the aerial system, distant receivers being fed over separate lines for each channel or over a common line. Some lines may be connected only to particular receivers. Buffer amplifiers may be used at the input and output of each channel. A single oscillator may be used for the frequency changing and restoring stages of a channel and in a system using two channels a common oscillator may be used for both. When separate aerials are used for the channels, they may be directional. The receivers may, in addition, be fed from an aerial and amplifier receiving the normal broadcast band.
Patent GB-1393540-A (GB)
Title: Devices for guiding materials being seamed in machines
IPC: D05B35/10
Filed: 1972-04-21
Abstract: 1393540 Seaming VESTRA-UNION MANUFACTURE DE VETEMENTS SA 21 April 1972 [23 April 1971] 18579/72 Heading B5K [Also in Division D1] To guide pieces of sheet material, e.g. fabric, into a high frequency welding or sewing machine a guide has upper and lower parallel plates 1, 2 spaced apart by a lateral guide piece 3. The material passes between the plates along the guide piece to the presser foot, to which the attachment is fixed by a lug 6. The work support plate 5 may have holes to permit compressed air to form a cushion under the material for ease of movement. The top plate may be transparent.
Patent GB-1218953-A (GB)
Title: Vehicle bodyworks having outwardly swingable sliding doors
Inventor: BODE ENGELHARD
IPC: B60J5/06
Filed: 1968-04-19
Abstract: 1,218,953. Vehicle doors. E. BODE. 19 April, 1968 [21 April, 1967], No. 18599/68. Headings B7B and B7J. In a motor vehicle, an outwardly swingable sliding door leaf 1 is movable on two vertically spaced arms 6, 7, Figs. 2 and 3, each pivotally secured at one end to the vehicle body and having a pivotally mounted roller 12 and a fixedly mounted roller 16 respectively at their other end running on rails 11 and 17 on the inner wall of leaf 1, and a support roller 3 is fixedly mounted on the door leaf so that, when the leaf is swung out, it engages and runs on a rail 4 mounted externally of the vehicle body, while a further arm 19 is rigidly mounted on the door leaf and carries a pivotally mounted roller 20 running on a rail 21 in a recess 22 below the door aperture. When the leaf is being swung shut, a retainer element 15, Fig. 7, on the door leaf runs entirely into a cylindrical housing 14, provided on arm 6 below roller 12, through a slot therein of width less than the length of element 15, so that an appropriate pivotal movement of arm 6, element 15 is secured within the housing 14 to prevent sliding of door leaf 1 while it is swinging. The roller 12 is mounted within a frame 8 which is pivotable on arm 6 about a vertical axis, and a guide 10 on the frame 8 laterally surrounds or engages a lower portion of the rail 11 to prevent movement of leaf 1 laterally relative to the rail 11.
Patent GB-1310831-A (GB)
Title: Garbage bag holders with appurtenant garbage bags
IPC: A47G29/06
Filed: 1970-04-20
Abstract: 1310831 Sack holders P E PLUM 20 April 1970 [29 April 1969] 18750/70 Heading B8C A garbage bag holder for use with two relatively movable cupboard parts comprises a collapsible frame with means at spaced points on the frame for connecting the latter to one of the cupboard parts and means on the frame for connecting a collapsible bag thereto. As shown, a garbage bag is supported on a door 7 by an articulated rod system 1-6, two pivot points 10, 11 of which are biased to open position by spring (12) (not shown) such that the mouth of the bag is automatically opened as the door 7 is opened. The bag is supported by holes around its open end on projections 21 on the rods. The rod system may be replaced by a deformable material, e.g. a plastics material.
Patent GB-1109674-A (GB)
Title: Amplifiers
IPC: H03G3/20
Filed: 1965-05-04
Abstract: 1109674 Transistor amplifying circuits MINNESOTA MINING & MANUFACTURING CO 4 May 1965 [4 May 1964] 18785/65 Index H4R 18AX A drift stabilized D.C. amplifier comprises means for setting the input from time to time  to a level at which the output provides an error signal representing the amplifier drift, a solion cell responsive to the error signal to provide a compensating signal dependent thereon, and a feedback path to the amplifier for applying the compensating signal continuously thereto, the signal source being such as to provide a constant compensating signal during the intervals between the times at which the input is set to said level, regardless of the duration of those intervals. The embodiment comprises an arrangement for amplifying a plurality of different signals which are supplied to terminals 12, 14 and applied to the input of the amplifier 16, Fig. 1, in sequence by means of reed switches 34. Amplifier 16 is of the differential type, the two inputs being applied via series resistors 56, 58 and the input terminal 52 earthed over resistor 58a: negative feedback is applied over resistor 60. Amplifier 16 feeds via series resistor 66 a further amplifier 18 the output of which is supplied to output terminals 20, negative feedback being applied over the amplifier by resistor 70: the gain is adjusted independently for each input by means of further feedback resistors 72 each of which is brought into parallel connection with resistor 70 by means of reed switches 74 which operate in synchronism with the corresponding reed switch 34 by means of control circuit 48. The operating sequence of control circuit 48 includes a position in which reed switches 82 are closed: the input to amplifier 16 is then short-circuited to earth, and the output of amplifier 18 comprises the drift error. This is fed back via reed switch 88, which is closed simultaneously, to a compensating signal generator 87 which feeds a compensating signal into the input of amplifier 18. The compensating signal generator 87 comprises a low-pass filter 109, 113, Fig. 2, feeding the error signal to the control electrode 102 of a solion cell 96: reversely-connected diodes 115 prevent the application of an excessive signal to the solion cell. The output_from output electrode 114 is fed to the emitter of a common base-connected transistor amplifier 116 which is followed by further direct-coupled amplifying stages 130, 132: transistor 114 is connected in series in the collector circuit of transistor 132, so that the output which is fed back to amplifier 18 varies about ground potential.
Patent GB-664114-A (GB)
Title: Improvements relating to piston rings
IPC: F16J9/26
Filed: 1949-07-18
Abstract: 664,114. Piston packing. BRITISH PISTON RING CO., Ltd., and PHIPPS, G. E. May 2, 1950 [July 18, 1949], No. 18818/49. Class 122(i) A piston ring b has a chromium-plated surface c and a narrow unplated land a adjacent one edge only. The ring may be manufactured from a stepped periphery ring which is chromium-plated' and subsequently ground to expose the land.
Patent GB-1011770-A (GB)
Title: Copper base alloys
IPC: C22C9/05
Filed: 1962-05-16
Abstract: A copper base alloy comprises: .Mn.8-14% .Ni.2- 5% .Fe.1- 7% optionally .Cr.up to 0.1% .Co.up to 2.5% .Be.up to 1.0% .Ti.up to 0.5% .Zr.up to 0.1% .Sn.up to 2.0% the balance being copper
Patent GB-1089675-A (GB)
Title: Improvements in or relating to electrical fuses
Inventor: MURPHY JOHN ERIC
IPC: H01H85/10
Filed: 1964-05-06
Abstract: 1,089,675. Fusible cut-outs. ENGLISH ELECTRIC CO. Ltd. May 4, 1965 [May 6, 1964], No. 18865/64. Heading H2G. The fusible element 3 of a fuse for use in D.C. circuits is formed from sheet material and lies in one plane, but has a length much greater than the shortest distance between its ends. It is embedded in arc-inhibiting material 4 and so, under low overhead conditions, produces a long arc path in relation to the length of the fuse-link. The element may be made of silver by photo-etching and has holes 5. Each fuselink may have more than one element.
Patent GB-153091-A (GB)
Title: Improvements in apparatus for preventing theft of motor cars and like vehicles
IPC: B60R25/04
Filed: 1919-07-30
Abstract: 153,091. Cook, A. H. July 30, 1919. Switches, locking.-A switch inserted in the ignition circuits of motor vehicles comprises a reciprocating contact-carrying member provided with projections which engage with combination locking- ing-disks, except when the disks are correctly adjusted. The contact-carrying member consists of a tube C with cut away portions which allow it to reciprocate through the face A of the fixed casing which accommodates the fixed contacts B<3> connected to the ignition circuit. The tube carries, at one end, an insulating block C<2> provided with contacts C<3> co-operating with the fixed contacts and, intermediately, projections c<1> which enter annular slots in combination disks D<1> - - D<5> separated from one another by spacing disks E<1> fixed by the pin G. The combination mechanism is held in position on the switch casing by the bolt H. When each of the rotatable disks has been correctly set, keyslot openings in each disk come into alinement permitting reciprocation of the contact-carrying member. The combination may be altered by interchanging two or more of the disks.
Patent GB-506309-A (GB)
Title: Improvements in the manufacture of wall papers and posters by photography
IPC: G03C5/08
Filed: 1938-06-25
Abstract: 506,309. Wallpaper. McCALLUM, J., and DICKINS, W. E. B. June 25, 1938, No. 18907. [Class 20 (iv)] [Also in Group XX] Wall coverings are made by projecting an enlarged image of a photographic transparency with an intense beam of ultra-violet light onto a sheet formed of juxtaposed strips of photographically sensitized material, and fixing the strips, with development, if necessary. A quartz lens and condenser may be used. The strips may be treated with a colouring solution before or after exposure, or may be treated before exposure with a colouring solution and treated, for example, by spraying, after develop- . ment with an intensifying or colouring solution. The finished enlargement may be finally treated with a transparent varnish or cellulose solution. The strips may be of paper, linen, or cotton, and may be coated with silver nitrate emulsion or sensitized with ferrous salts. The strips may be numbered to facilitate re-assembly, and may be finally pasted on the wall. Specification 334,591, [Class 20 (iv)], is referred to.
Patent GB-569284-A (GB)
Title: Improvements in and connected with electric tumbler switches
IPC: H01H23/14
Filed: 1943-11-13
Abstract: 569,284. Tumbler switches. CRABTREE & CO., Ltd., J. A. and MORGAN, R. W. Nov. 13, 1943, No. 18953. [Class 38 (v)] Endwise movement of the common pivot pin c of the dolly and contact-rocker e is prevented by shouldered wedge - shape grooves m into which the rockerarms are forced by the spring f of the toggle-link g interconnecting the free ends of the dolly and rocker. The sleeve h of the link g similarly surrounds a groove n of uniform depth in the pivot pin i, which is formed at each end with a wedge-shaped annular groove which is forced by the spring-pressure into the bottom of a slot k in each rocker-arm. Arcuate grooves also are referred to, Fig. 4 (not shown).
Patent GB-530737-A (GB)
Title: Machine for grinding injection needles
IPC: B24B19/16
Filed: 1939-06-29
Abstract: 530,737. Grinding hypodermic needles. ENYA, H. June 29, 1939, No. 18988. [Class 60] Hypodermic needles have the points reground in a machine employing three discs 4, 5, 6, Fig. 7 spaced by washers 7, 8 and clamped on a sleeve against a collar with set screw 44 by a nut 43. The sleeve is mounted on a shaft 9 having a driving pulley 10 and secured against end play by a collar 45. On slackening the screws 44, 46, the shaft 9 may be slid from its bearings and the sleeve and discs removed without dismantling. The needle 16 is clamped in a holder 15 swivelling about a pin 17 under control of a spring and nut 20 and a fork 27 straddling a pin 26 on a part 22, to which the holder 18 is pivoted at 23, and which is pivoted at 24 to a member 25 vertically adjustable but not rotatable in a support 3. An arm 30 on a shaft 29 carries at one end a stone 34, for use in dressing the centre disc, and an oil reservoir 36 with a leather feed strip 37, and at the other end a fibre pad 31 for pressing the needle against the disc. A handle throws the arm from the full line to the dotted line position a spring being arranged to maintain the arm in either position. After grinding the point on the centre disc the handle 21 is used to deflect the point against the side wheels 5, and 6, Fig. 8, the pin 26 causing the needle to rotate axially at the same time.
Patent GB-1176528-A (GB)
Title: Improvements in and relating to Electrical Components
IPC: H05K3/34
Filed: 1967-04-25
Abstract: 1,176,528. Electric couplings. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. 25 April, 1967 [28 April, 1966], No. 19036/67. Heading H2E. Conductors 3, 5, 7 extending from an electrical component 1, e.g. a transistor encapsulated in a synthetic envelope, each have a first part 9 and a thinner second part 15 with locally thickened locking parts 23, 21, so that the component can be mounted on either a coarsely perforated printed circuit-board 13 or a relatively finely-perforated board 19. Each conductor may be slit to produce two parts 29a, 29b, which are elastically displaceable relative to each other as the conductors are pushed through the perforations. These slits may alternatively be omitted. Each conductor may be formed from a single flat strip.