baber/WOPTO huggingface dataset:
Patent GB-1060104-A (GB)
Title: Improvements in or relating to optical masers
IPC: H01S5/50
Filed: 1964-06-08
Abstract: 1,060,104. Semi-conductor lasers. SIEMENS HALSKE A.G. June 8, 1964 [June 7, 1963], No. 23606/64. Headings H1C and H1F Optical radiation is generated or amplified in a plurality of parallel maser-active transfer zones within a single semi-conductor body. As shown in Fig. 1, a semi-conductor amplifier 1 consists of a stack of semi-conductor layers 2,3 alternately of opposite conductivity type or different degree of doping between which are more weakly doped or intrinsic maser-active transfer zones 4. The alternate layers 2, 3 are respectively connected in parallel by leads 10, 11 to a D.C. source 10, a modulator such as a microphone 13 being optionally connected in series. The input to the amplifier consists of a coherent light beam 5 derived from a similar semi-conductor generator 7 having but one maser-active transfer zone 9, the outer layers 8, 8<SP>1</SP> being connected through a microphone 18 to a D.C. source 17. The Figure shows separate cavity reflectors 19, 20 which are actually integral with the semiconductor body and consist of polished end surfaces, the radiation emitted through one reflector being focused by a lens 14 on to the parallel active transfer zones of the amplifier. The amplified coherent output 6 is passed through an iris 21 which suppresses secondary radiation. In a modification, Fig. 2, a semiconductor body which serves as a source of coherent light comprises a similar stack of layers 2, 3 and transfer zones 4, electrodes 23, 23<SP>1</SP> being connected from opposite ends of the stack to a modulator 13 and an A.C. source 24. The stack is conductive for both half cycles of A.C. since those junctions which are polarized in the non-conductive direction behave as capacitive impedanees. The semi-conductor bodies are preferably formed by an epitaxial deposition process and may comprise gallium arsenide, gallium arsenide phosphide, indium antimonide or indium arsenide.
Patent GB-224998-A (GB)
Title: Improvements in and relating to the production of hinges of pedal feet of pianos andthe like
IPC: F21V21/10
Filed: 1923-09-21
Abstract: 224,998. Moore, A. Sept. 21, 1923. Pianoforte pedals.-An adjustable pivot for a pianoforte pedal consists of an attachment bracket 1, Fig. 2, having an inwardly projecting bearing 7 at one, side which engages an opening in the end of the pedal, a threaded pin 8 passing through the bearing 7 and through the end of the pedal 4, and a coned bearing 9 screwing on the pin 8 and engaging the other end of the opening through the pedal. The bearing 9 may have a square &c. head protected by a lip 2<a> on the bracket. In a modification, a second fixed bearing 7 replaces the screwed bearing 9, a nut screwing on the end of the pin 8. In another modification, screwed bearings 9 are used at each end of the pin 8. The side cheeks of the pedal end may be formed of two forked tines 3 curved over as shown in Fig. 4, a separate drilling operation being unnecessary. According to the second Provisional Specification, when the tines 3 are being curved over, their ends may be left spaced from the face of the pedal; or slots may be formed in the lugs 2 leading to the pivot centres, to facilitate assembly. Also the solid end of the pedal may be curved over instead of first forming tines.
Patent GB-193001-A (GB)
Title: Improvements in or relating to railway tank wagons
IPC: B61D5/02
Filed: 1922-08-31
Abstract: 193,001. Mathieson Alkali Works, Inc., (Assignees of Mauran, M.). Feb. 7, 1922, [Convention date]. Tank wagons; footboards, communication platforms, hand-grips.-A railway vehicle for transporting liquified gases comprises a skeleton framework mounted on bogies, the framework being provided with seats arranged in spaced relation for the containers which are clamped to the seats, and with a communication platform running along both sides and ends. The framework comprises a centre sill 1 and short transverse girders 2 which are extended outwardly bv means of lighter frame members 2<a>, 2b to form supports for the platform 32. Transverse girders 3 at each end of the frame rest on the bogies. Longitudinal girders 7 run the length of the vehicle and are supported on the ends of the transvirse girders 2a, 2<b>, concave plates 8 being rivetted to the girders 7 to form seats for the containers 9 which are clamped in position. The platforms 32 along the sides and ends of the vehicle are provided with handrails 36.
Patent GB-615812-A (GB)
Title: Improvements in and relating to cathode ray luminescent screens
IPC: H01J29/18
Filed: 1946-08-09
Abstract: 615,812. Luminescent screens for cathode-ray tubes. BRITISH THOMSON-HOUSTON CO., Ltd. (General Electric Co.). Aug. 9, 1946, No. 23706. [Class 39 (i)] A luminescent screen for a cathode-ray apparatus producing a contrasting trace for moving objects in range finding and direction finding equipment comprises a first luminescent layer emitting light or ultra-violet radiation under electron bombardment, an intermediate electron impervious layer and a second layer consisting of a mixture of two luminescent materials giving lights of contrasting colours in response to the light or ultraviolet radiation, and of different responses and rates of decay. The screen (Fig. 2) carried on the glass wall 62 of a C.R. tube has a first layer 31 comprising a material, e.g. silver activated zinc sulphide, which emits ultra-violet and bluish light under cathode-ray excitation, an electron absorbing layer 32, e.g. of an alkaline. silicate of which a number of layers may be sprayed on, and a layer 30 consisting of a mixture of two phosphors, e.g. red fluorescing copper activated zinc cadmium sulphide (CdS 25-40 per cent) which has a quick pick-up and decay and green fluorescing copper-activated zinc sulphide which has a slow pick-up and decay. Alternatives for the latter are yellow fluorescing copper-activated zinc cadmium sulphide (12 per cent CdS) or blue fluorescing bismuth-activated strontium sulphide. Specification 598,545 is referred to.
Patent GB-1366040-A (GB)
Title: Devices for spreading of the knitting on flat bed knitting machi nes
IPC: D04B35/00
Filed: 1972-05-19
Abstract: 1366040 Knitting machines UNIVERSAL MASCHINENFABRIK DR RUDOLF SCHIEBER KG 19 May 1972 [7 June 1971] 23733/ 72 Heading D1C In a flat-bed knitting machine, the material is knitted round guide bars 1 which are pivoted to move in the plane of the knitting, means being provided for holding the guide bars against the pull of the fabric in any pivoting position. As shown, the bars 1 are pivoted to arms 2 and are held against movement by a screw 3 with a lock-nut 4. Arm 2 is carried in mounting 9 displaceable on thread guide rail 10 and held in position by a screw 11. The fabric is knitted round bar 1 which has a bevelled end 5 to lie tangentially of the take-up roller.
Patent GB-981394-A (GB)
Title: Spindle for twisting and spinning frames
IPC: D01H7/04
Filed: 1963-06-14
Abstract: 981,394. Spindle arrangements. W. ATTIGER. June 14, 1963, No. 23832/63. Heading D1D. In a twisting &c. spindle arrangement, a beltpulley 5 is mounted on a stationary bolster 1 and is drivingly connected to the spindle 16 by a clutch 17, 18 which can be disengaged by axially moving the spindle, a brake 23 being provided for the clutch-part connected to the spindle and spacer bearings 9, 12 serving to locate the spindle when it is starting and stopping. The bolster contains a slotted damping-sleeve 11 and may be cast in the spindle-frame or be attached thereto by a flange 2 and a nut on a thread 3. A bearing 6 is interposed between the socket and the pulley 8. The clutch comprises a plastics &c. ring 18 fixed to the flange 17 carried by the spindle cooperating with a friction-surface on the upper pulley wall. The clutch parts are separated by a fork 24. In other forms the ring may be dispensed with or replaced by a magnetic clutch. A cover 22 to which the brakesurface 23 is attached may consist of two or more hinged parts to facilitate insertion of the spindle.
Patent GB-425817-A (GB)
Title: Improvements in apparatus for projecting molten pulverised bodies
IPC: B05B7/20
Filed: 1934-08-18
Abstract: 425,817. Fusing and working silica. BENOIT, F. P. C., 41, Rue de Prony, Paris. Aug. 18, 1934, No. 23853. Convention date, Nov. 18, 1933. Addition to 416,452. [Class 56] [See also Group XXIX] A spray pistol for the apparatus described in the parent Specification has grouped within the gun casing 91 a burner having an axial passage 64, Fig. 4, for the powder-laden stream of air, nozzles 65 for the delivery of the comburent and combustible gases, an annular mixing chamber 86 around the axial passage and communicating with the nozzles, and means for supplying the gases to the mixing chamber. The combustible mixture is produced in a chamber 95 to which the gases are led by tubes 71, 77. The powder-laden stream of air is led to a chamber 97 formed in two parts and containing helicoidal blades for giving a whirl in the air stream. The powder laden air stream and gases are simultaneously regulated by the three-way cock 96 mounted in the hand grip and shown in detail in Fig. 5. This comprises two lift valves 108, 1O8<a> for the air and combustible gasrespectively and a cock 25 for the powder laden air stream, the arrangement being such that on turning the handle 103 first the valve 108a for the air, then the valve 108 for the combustible gas and finally the cock 25 are opened. The Specification as open to inspection under Sect. 91 contains the subject-matter of Specification 425,449, [Group XXIX]. This subject-matter does not appear in the Specification as accepted.
Patent GB-969691-A (GB)
Title: Battery-charging apparatus
IPC: H02J7/00
Filed: 1962-06-21
Abstract: 969,691. Preventing excess charging of batteries. NOVI-P.B. S.A. June 21, 1962 [June 22, 1961; June 12, 1962], No. 23877/62. Heading H2H. A battery charging circuit for regulating the charging of a battery B comprises a rectifying bridge having three controlled silicon rectifiers DC 1 -DC 3  and three uncontrolled silicon rectifiers D 1 -D 3  through which bridge the battery is charged from an alternator A, the controlled rectifiers DC 1 -DC 3  being controlled according to the state of charge of the battery B by means of a vibrator K, the coil of which is connected across the battery B and the contact i thereof in series with the exciting circuit of the control electrode of the controlled rectifiers DC 1 -DC 3 . The diodes d 1 -d 3  and the resistors R 1 -R 3  are for protection of the controlled rectifiers against inverse voltages and excessive currents, respectively. In other embodiments the polarities of the diodes may be reversed and saturable reactors may be used in the exciting circuits of the control electrodes of the controlled diodes. A device for limiting the discharge of gas by the battery may be associated with the circuit. In yet another embodiment the rectifying bridge comprises uncontrolled rectifiers, the output of which charges the battery by way of a solid state rectifier having two control electrodes, one to initiate conduction and the other to terminate conduction thus to regulate the charging of the battery.
Patent GB-207855-A (GB)
Title: Improvements in and connected with joints for high pressure in metals and other rigid materials
IPC: F16J15/10
Filed: 1922-09-04
Abstract: 207,855. Darroch, J. Sept. 4, 1922. Joint-making packing. -High-pressure joints in metals, glass, silica, stone, stoneware and porcelain, are formed by inserting in rectangular or oval grooves therein round or other section rubber or other packing of the same or of less cross-sectional area than the grooves. In the calorimetric bomb joint, Fig. 1, round material C is placed between flanges A, B which are tightened. A two - grooved joint is shown in Fig. 11. Either or both flanges may be grooved, or one may have a tongue to fit a groove in the other. Reference has been directed by the Comptroller to Specifications 1278/73, 1087/97; 8727/05, [Class 12, Bearings &c.] ; and 28242/09.
Patent GB-152641-A (GB)
Title: Improvements in the tanning or impregnating of hides and skins
IPC: C14C3/30
Filed: 1920-08-16
Abstract: 152,641. Elektro-Osmose Akt.-Ges., (Graf Schwerin Ges.). Oct. 13, 1919, [Convention date]. Hides and skins, treating; electric endosmose.- Hides and skins to be tanned or impregnated are submitted to a preliminary treatment consisting in subjecting them to the action of an electric current in pure water. This is stated to shorten and render more economical the subsequent process and also to have a de-liming effect. The preliminary treatment in pure water may be conducted with diaphragms or the hide &c. may be suspended between electrodes. The subsequent treatment may comprise electro-osmotic tanning or mechanical tanning or a combination of these processes. In an example, an ox-hide de-limed with dilute formic acid is electrically treated in pure water for 10 hours, being then electro-osmotically tanned in chestnut wood extract of 2‹ BÚ. and subsequently mechanically tanned with a similar extract of 3‹ BÚ. In another example, after the preliminary treatment in water, bark or chrome tanned leather is impregnated or fatted by electro-osmotic treatment with dÚgras in soap solution for 8 hours. Specification 4488/09 is referred to.
Patent GB-188518-A (GB)
Title: Improvements in or relating to electric water heaters
IPC: H05B3/80
Filed: 1921-10-31
Abstract: 188,518. Baden, H. E. P., and Electro- Heater Co., Inc. Oct. 31, 1921. Heating by electricity.-In an electric water heater having a heater coil 17 on the portion to be immersed, surrounded by a perforated cover 19, the parts are so arranged that water can circulate through and about the turns of the coil and the cover has openings in the bottom and sides to facilitate circulation. A porcelain handle 1 is provided with flanges 3, 9 and a helical groove containing the heater coil 17. The flange 3 is provided with a groove 10, and the flange 2 has slots 9 therein. The supply leads have rings 14, 15 for connection to the ends of the heating wire and pass up through the centre of the handle. The perforated cover has two bossed-in portions 21 which pass through two slots in the upper part of the flange 3, the cover being given a half turn when the portions 21 engage the groove 10.
Patent GB-217114-A (GB)
Title: Improvements in and relating to brooms
IPC: A46B3/08
Filed: 1923-09-25
Abstract: 217,114. Molsberger, B. G. Sept. 25, 1923. Holders with clamping-devices for brushes.- The fibres 13 of a broom are detachably held between two corrugated clamping plates 15 having a swivel connection with the sides of a holder 10 which is formed with a socket 11 to receive a handle 12. The sides of the holder are fitted with a number of screws 17, each provided with a reduced portion 19 and with an end portion 20 which is screw-threaded to engage an aperture in a hollow boss 21 formed on one of the clamping plates.
Patent GB-600680-A (GB)
Title: Improvements in or relating to bearings, oil seals and the like
IPC: F16C33/74
Filed: 1945-09-17
Abstract: 600,680. Stuffing-boxes &c. ; piston packing. BURGER, F. E., and JARU, Ltd. Sept. 17, 1945, No. 23995. [Classes 122 (i) and 122 (v)] A bearing, oil-seal bush, &c. for a machine part comprises a one-piece split-ring 21 of hard springy material such as metallised graphite held constrained in an expanded or contracted condition, to press its sealing or bearing surface against the machine part, by a soft rubber &c. backing 16 bonded to the ring to form a unitary structure. The backing fills and seals the gap in the split-ring. A hard backing 17 of steel &c. may be bonded to the opposite face of the soft backing which over part of its width is spaced from the hard backing. Pressure around the machine part is equalized by tapering the split-ring radially towards the gap and may be equalized axially by tapering it in an axial direction. When more than one split-ring is used, the gaps are staggered and the soft backing may be provided with an endless V- shaped groove to increase its resilience. The split-ring may be grooved on its outer surface to receive a thin split-ring adapted to apply additional pressure to the main ring. Specifications 578,318, [Group XXXIV], and 583,348 are referred to.
Patent GB-161499-A (GB)
Title: Improvements in and relating to sweatbands for hats
IPC: A42C5/02
Filed: 1920-08-18
Abstract: 161,499. Adams, A. M. Aug. 18, 1920. Leathers or s w e a t bands.-In a hat having an elastic cord disposed against the reverse side of the sweat band, this band being stitched to a binding independently stitched to the hat, the elastic cord is secured to the sweat-band body by a stitching including long and cross loops, the latter extending around the cord and into the body. As shown, the binding 14 is stitched to the hat, and the sweat band 15 to the binding. An elastic cord 16 is secured to the reverse side of the sweat band by a stitching including long loops 16a and cross lcops 16b.
Patent GB-586901-A (GB)
Title: Improvements in or relating to water heating and circulating apparatus
IPC: F24H1/14
Filed: 1944-12-02
Abstract: 586,901. Hot-water boilers. PHILLIPS, Ltd., A., and HALL, S. C. Dec. 2, 1944, No. 24113. [Class 64 (i)] In a water heater, gilled or finned tubes 17 are arranged in tier or bank formation in the upper part of the body or casing, which is wholly or mainly of sheet metal, open at their ends into chambers 13, 13a or pockets formed by doublewalled portions of the body or casing at opposite ends thereof, the chamber or pockets coacting with the tubes to form a tortuous course for the water to be heated. The chamber 13 has a water inlet 14 and outlet 15, and the chambers 13, 13a are divided by one or more partitions such as 13b. In the form shown, passages are formed at each side of the casing between the ends 5, 5c, by flanged slidable plates 11a. The tubes are arranged with two or three pairs alternating with one or two single tubes. At. both sides of the bank of tubes, plates held between the plates 11a and the gills 17a on the pair of tubes are bent inwardly adjacent to the single tubes to restrict the path of flow of hot gases from the gas burner 9, which is controlled by a thermostat 10. The gills 17a may be helical. The centres of the tubes may be equal distances apart and the radii of the gills equal to half the distance between centres.
Patent GB-518273-A (GB)
Title: Improved means of suppressing electrical interference by sparking plugs of internal combustion engines
IPC: H04B15/02
Filed: 1938-08-18
Abstract: 518,273. Resistances. BELLING & LEE, Ltd., DISNEY, A. L. and STRAFFORD, F. R. W. Aug. 18, 1938, No. 24320. [Class 37] A high resistance device for suppressing interference, particularly that produced by ignition systems of internal combustion engines, comprises means for connecting a sparking plug to an ignition device consisting of one or more resistances connected to terminal connectors by conductors, the resistances and conductors being provided with a common overall covering of rubber or like material. In the construction shown in Fig. 1, a conductor 1 is connected to a resistance 2, which may be moulded from graphite and kaolin or other substances. A lead 3 connects the resistance 2 to a terminal connector 4 adapted to make connection with a sparking plug, the lead 1 being connected to the spark coil or magneto. The conductors 1, 3 and resistance 2 are provided with an overall covering of rubber &c., 5, which may be provided with rubber fins to assist heat radiation. In place of a composition resistance, a distributed wire element wound, according to the Provisional Specification, on a length of cord &c. may be employed. A number of resistance elements, which may be either composition or wound types, may be connected in series and joined to a terminal at one end and a conductor at the otther, the whole, assembly having a rubber covering. For use with internal combustion engines having a number of sparking plugs, a number of connectors made as described 'may be combined as a composite unit by providing them with a common covering of moulded material which branches out into separate leads for the individual plugs. According to the Provisional Specification the composite rubber encased assembly may be electrically screened by an outer metallic braiding or flexible metal tube.
Patent GB-227493-A (GB)
Title: Improvements in or relating to drawing and like rollers for spinning, drawing, combing and the like machines
IPC: D01H5/74
Filed: 1923-10-01
Abstract: 227,493. Loxam, J. Oct. 1, 1923. Addition to 189,966, [Class 120 (ii), Spinning, twisting, &c.]. Rollers or cylinders.-The edge portions 6 of the outer leather covers 5 of the rollers for spinning, drawing combing, and like machines claimed in the parent Specification are compressed against the sides of the boss and hardened by heating instead of being cemented thereto. The cover may be of white, brown, chrome, or other soft leather and its meeting edges are connected by a spliced or butt joint; in the former case the cover is formed as an endless band of such length that great force is needed to place it in position on the roller. The edge portions partly turn down owing to the tension in the cover, and are first compressed against the sides by means of two grooved rollers against which the roller is pressed, and are finally compressed and hardened in a press, which comprises a lower jaw 9, Fig. 4, heated by a gas ring 15 and a cap 12, which may be heated in an oven and is operated by a screw 13.
Patent GB-885156-A (GB)
Title: Metal banisters for staircases
IPC: E04F11/18
Filed: 1960-07-13
Abstract: 885,156. Hand rails. MUSSIG, W. July 13, 1960, No. 24408/60. Class 45. A banister has a parallelogram-shaped frame 1 with rounded corners, a filling 6 within the frame, legs 3 and 4 fastened to the frame within the frame length, and supporting means 8 and 9 fastened to the staircase T receivably supporting said legs.
Patent GB-740743-A (GB)
Title: Improvements in and relating to processes and apparatus for the manufacture of hollow metal bodies having a thick base, and bodies thus manufactured
IPC: B21C23/14
Filed: 1950-10-06
Abstract: 740,743. Extruding. BARKWAY ENGINEERING CO., Ltd. Oct. 6, 1950 [Oct. 7, 1949], No. 24516/50. Class 83 (4). In a method of extruding metal capsules 1, a punch 9 acting on a blank 6 confined in the bore 11 of a die has a conically bevelled end 10<SP>1111</SP> terminating in a projecting head 10 which acts as an internal mandrel to define the internal diameter of the capsule, the bore 11 of the die terminating in a conical step 7 leading to an orifice 8 defining the external diameter of the capsule. The head 10 may be cylindrical or conical, the conical form producing an internally tapered wall 4 on the capsule. The end 10<SP>1</SP> of the head may be hemispherical, paraboloidal or of truncated cone shape according to the desired internal shape of the base 2 of the capsule.
Patent GB-645491-A (GB)
Title: A device for facilitating the fixing of arris rails to posts
IPC: E04H17/14
Filed: 1947-09-05
Abstract: 645,491. Fences. KING,; G. R. Sept. 5, 1947, No. 24519. [Class 45] A socket-like member for fixing arris rails to posts is adapted to embrace all the sides of the rail to which it is screwed or otherwise fixed, the end of the rail being spaced from a wall closing the outer end of the device, this wall having a slot or opening to receive a bolt for securing the device to the post and one of the side walls of the above having a mouth through which the bolt or nut can be manipulated. A member for triangular section arris rails has two walls 1 arranged in V-shape each having a hole 6 for a fixing screw and an inturned flange 3 to grip the third side of the rail. The end wall 4 has a keyhole slot 7 to take a bolt by which the bracket is fixed to the post. The bracket may be made to suit rails of other than triangular section and may be cast or stamped and bent from flat sheet. In the latter case the end wall 4 is formed by overlapping flanges of the walls 1 so that it is of double thickness.