baber/WOPTO huggingface dataset:
Patent GB-1437378-A (GB)
Title: Apparatus for heating by microwave energy
IPC: H05B6/80
Filed: 1973-05-24
Abstract: 1437378 Microwave heating STIFTELSEN INSTITUTET FOR MIKROVAGSTEKNIK VID TEKNISKA HOGSKOLAN I STOCKHOLM 24 May 1974 [29 May 1972] 24983/73 Heading H5H A microwave heater comprises a body 12, made of dielectric material having low loss and a relative dielectric constant # r  exceeding that of air, fed with microwaves and forming a leaky waveguide, which body has a constant cross-sectional thickness normal to the surface near which the material to be heated is placed, this thickness being such as to maintain the phase velocity of the microwave energy in the body lower than the velocity of light in air and being no greater than where C is the velocity of light in air and fg is the frequency of the microwave source, in order to prevent propagation of modes higher than the basic mode. In an embodiment in the form of a hot plate for cooking purposes the dielectric body is in the form of a plate backed by a metal layer 13 and can heat a pot 16 resting on its top surface. In another embodiment two similar plates oppose one another and an object to be heated can be pressed between them, Fig. 3, not shown. In yet another embodiment the plate is in the form of an arc fitting over part of the circumference of a rotatable cylinder which when heated passes on the heat to the material over which it is rolled, Fig. 4, not shown. Other embodiments describe cylindrical forms of the dielectric material, fed by waveguides or coaxial cables, used for heating liquids or powders, Figs. 5-8, not shown. In yet a further embodiment, Figs. 9, 10, not shown, the dielectric material is in a channel and forms a closure for the open end of the channel which serves as a waveguide, this configuration being used to heat ribbons or strands of material.
Patent GB-403773-A (GB)
Title: Improvements in automatic gramophones
IPC: G11B17/16
Filed: 1932-09-08
Abstract: 403,773. Magazine gramophones. MANN, G. S., 101, Rosehill Road, Ipswich, Suffolk. Sept. 8, 1932, No. 25024. Drawings to Specification. [Class 40 (ii).] An automatic magazine gramophone, having a spring-supported platform for holding the records in the magazine, is provided with eloctromagnetic means for causing the platform to be alternately raised and locked in position as the transfer of records proceeds. The apparatus is fully described and shown in Specification 402,779. Specification 403,786 also is referred to.
Patent GB-462668-A (GB)
Title: Methods and apparatus for regulating free piston gas compressors
IPC: F02B75/02
Filed: 1935-09-09
Abstract: 462,668. Free - piston compressors. PESCARA, R. P. Sept. 9, 1935, No. 25103. Convention date, Sept. 7, 1934. [Class 8 (i)] In a free-piston compressor wherein the power unit is an internal-combustion engine having a device for regulating the quantity of fuel supplied thereto in accordance with the length of stroke of the piston of the engine, the regulating device is controlled in accordance with the pressure prevailing in the pressure chamber at the end of the compression stroke or in an auxiliary chamber of the apparatus. The injection unit 11 of the engine is controlled by a slide 10 which is actuated by a piston 9 receiving fluid from the pump 7 in accordance with the position of a valve 8. The pump 7 is operated by cam gear 12 operated by linkages from one of the reciprocating parts, whilst the valve 8 is under spring restraint 19 and subjected in the chamber 17 to the pressure prevailing in the compression space 3. The pump 7 normally pumps from a tank 14 and when the valve 8 is in the neutral position, corresponding to normal piston stroke, through a return valve 24, but with the valve in the position shown liquid is pumped past the hollow portion 20 of the valve through the conduit 27 to the underside of the piston 9 thereby altering the slide control 10 of the injection unit. In another form, the acceleration of the reciprocating piston which is proportionate to the final compression pressure is utilized. In this case a cylinder 49 is carried by one of the reciprocating members which contains a piston 50 having a non-return valve 60 and acting under spring restraint 49. According to the acceleration as the cylinder is reciprocated, the piston will take up varying position against the spring 49 and so pass fluid through an opening 53 and pipe line 55 to the underside of the control piston 9. As before, the plunger of the injection pump 11 is operated by a cam 13 carried by a reciprocating rod 13<1> and is governed by a slide member 10. In a further modification, an indicator 62 is provided which is moved by the rod 73 of the control piston 9 and indicates the stroke on a scale 63. With abnormal strokes, the valve 66 on the rod 73 is positioned so that pressure fluid is admitted to the conduit 67 and acts on the piston 64 and the linkage 65 operates to cut out the injection unit 11 and stop the machine. A further control is dependent upon the pressure in the reservoir, such pressure acting on a piston 70 which moves a cam 71 over the end of the floating lever 72. In modifications, the pressure in the buffer cylinder and other like auxiliary chambers is utilized to act upon the control valve 8.
Patent GB-277992-A (GB)
Title: Improvements in or relating to lubricators
IPC: F16N7/00
Filed: 1927-09-23
Abstract: 277,992. Gebhardt, H. Sept. 24, 1926, [Convention date]. Gravity-feed and force-feed lubricators. - A plunger i is mounted in a cylinder d arranged within an oil cup a, the plunger having a rod k protruding through the cup and provided with a handle l. 1. If the plunger is held raised by a catch m or by a pin inserted in a hole o in the rod so as to uncover openings h in the cylinder d, oil flows from the cup by gravity, while, by releasing the catch m, the plunger can be depressed to give a force-feed. If the plunger is allowed to remain in the depressed position further flow of oil is prevented.
Patent GB-282513-A (GB)
Title: Improvements in and relating to electric switches
IPC: H01H27/08
Filed: 1926-10-09
Abstract: 282,513. Electrical Appliances (Blackpool), Ltd., and Waite, R. T. Oct. 9, 1926. Plug couplings combined with electric switches. An electric switch adapted for use with plug couplings, comprises, as shown in Fig. 3, a rotatable insulated drum or barrel 6 provided at its ends with pivot pins one or both of which carry loosely rotatable switching members 19. The members 19 are provided with rollers 20, 21 (Fig. 3) on opposite sides of which bear the ends 18 of springs which are coiled around pins 17 projecting from plates 16 secured to the sides of the drum 6. The switch is operated by a detachable handle 14 which is inserted into the drum and moved to cause its rotation. This action moves apart the ends 18 of the springs 17, but the switch members are held against rotation until the spring has moved across a. dead centre position when the switch members are snapped over by the reaction of the springs on the rollers. to cause the contacts carried thereby to engage fixed contacts 10. A similar quickbreak action occurs in opening the switch. The switch is enclosed in a casing 22 which has a keyhole slot 24 (Fig. 5), the handle having a recess 15 co-operating therewith so that the handle can only be removed when the switch is open. The operating member may aternatively be the earthing-pin of a three pin plug. the contacts of which pass through slots 23 in the casing 22 to the sockets 13 in the barrel member (Fig. 1). In this case an earthed contact strip 12 is mounted on the drum so that it is always in engagement with a fixed contact 11. Springs 25 surrounding the pivot pins bear between the switching members 19 and fixed bearing brackets 8 to prevent axial displacement of theswitch drum.
Patent GB-186519-A (GB)
Title: Improvements in or relating to automatic pistols
IPC: F41A17/38
Filed: 1921-09-22
Abstract: 186,519. Schmeisser, H. Sept. 22, 1921. Safety appliances; magazines.-The magazine catch of an automatic pistol is connected to a hand-operated safety device by a spring slide in such a way that the magazine cannot be removed or re-inserted except when the safety is on. In the construction shown, the magazine catch 8 is adapted to be locked by a slide 27 operated by the rotary safety-pin 6. The slide has an arm 29 engaging either a deep slot 30 or a shallow slot 32 in the safety-pin, the slots being so arranged that when the safety is off the arm 29 engages the deep slot 30, as shown, and the slide, 27 is pressed down by its spring 28 to lock the catch 8. Rotation of the pin 6 to the safe position raises the slide and frees the catch 8. Modifications are described in which the magazine catch, or an auxiliary detent, locks the slide when the magazine is removed, so that the safetypin cannot be rotated to the safe position until the magazine is re-inserted.
Patent GB-649623-A (GB)
Title: Improvements in or relating to hydraulic reciprocating pumps
Inventor: NEWTON NOEL BANNER
IPC: F04B23/02
Filed: 1948-09-28
Abstract: 649,623. Reciprocating pumps. NEWTON & BENNETT, Ltd. Sept. 28, 1948, No. 25221. [Class 102(i)] [Also in Group XXVI] A hydraulic pump comprises a cylinder f permanently secured to a block d attached by bolts to the underside of a cover b of a reservoir a. The cylinder has an inlet valve f<SP>2</SP> and the piston is secured to a rod r and has a valve r<SP>4</SP>. The diameter of the rod is such that equal delivery occurs on each stroke the liquid passing through passages r<SP>5</SP> in the rod and k in the body. The passage k communicates with an outlet n, an automatic release valve k<SP>1</SP>, and a manuallyoperated release valve o<SP>2</SP> actuated by a lever q connected to operating mechanism mounted on the cover. The rod r is reciprocated by a lever t<SP>1</SP>, t that is partly enclosed by a casing b<SP>2</SP>; a cover b<SP>5</SP> is secured to the handle t<SP>1</SP>. A gland g (see Group XXVI) surrounds the rod r. Specification 647,817, [Group XXX], is referred to.
Patent GB-791171-A (GB)
Title: Improvements in packaging machines
Inventor: MERRIMAN HORACE BARTLETT
IPC: B65B13/22
Filed: 1955-09-02
Abstract: 791,171. Package-banding machines. GERRARD INDUSTRIES, Ltd. Aug. 23, 1956 [Sept. 2, 1955], No. 25329/55. Class 94(1). [Also in Group XXIV] In a machine in which a flat metal band is tensioned about a package by rotation of a drum and has its ends joined by mechanical deformation of an applied metal seal, a band-feeding and tensioning drum 1 is driven through a friction clutch 2 by a sleeve 3 coupled to a mitre wheel 4 of a reversible gear and is mounted on a hollow shaft 5 carrying an externally-toothed wheel 6. An externally-toothed planet wheel 10 having a smaller number of teeth meshing with those of the wheel 6 is freely rotatable on an eccentric 9 keyed to the sleeve 3 and is secured to a ratchet wheel 11 which is engaged by a spring-loaded pawl 12 keyed to a shaft 13 journalled in the gear casing 14. The shaft 13 also carries a lever arm fitted with an adjustable tappet 17 arranged to be engaged by a cam 18 on a shaft 19 which controls the reversible gear. Movement of the shaft 19 to cause the sleeve 3 and drum 1 to be driven in the feeding direction causes the cam 18 to engage the tappet 17 and lift the pawl 12 out of engagement with the ratchet wheel, thus allowing free rotation of the drum. When the gear is reversed to effect tensioning of the band, the pawl is allowed to engage the ratchet wheel and rides freely over its teeth during the initial tensioning operation during which the drum is rotated rapidly by the clutch 2. As the tension increases, the clutch slips and the drum tends to rotate in the feeding direction, thus causing the pawl to engage behind one of the teeth of the ratchet wheel. Thereafter, the planet wheel 10 is rolled around the inside of the wheel 6 by the eccentric 9, without rotating on its own axis, and the drum 10 is thus driven at reduced speed during the final tensioning operation. If the numbers of teeth on the wheel 6 and wheel 10 are 64 and 60 respectively, the gear ratio for the final drive is 16 : 1.
Patent GB-901946-A (GB)
Title: Improvements in and relating to internal loudspeaker communication systems
IPC: H04M9/04
Filed: 1959-07-23
Abstract: 901,946. Sub-station equipment. BARON, O. June 30, 1960 [July 23, 1959], No. 25331/59. Drawings to Specification. Class 40 (4). A private interconnection system using loudspeakers is coupled to speech from the instrument of a public system by means of an inductive pick-up the output of which is amplified and is connectible to one or more loud-speakers of the interconnection system from a master station. The interconnection system is the same as that described in Specification 843,809. The master station can communicate with one or more stations over a transmit/receive transistor amplifier. The inductive pick-up is secured to the public telephone instrument by means of a suction pad and picks up signals from the line transformer. Switches to connect power to the amplifier and a warning light are operated by a control knob which also controls an attenuator in shunt across the pick-up.
Patent GB-392163-A (GB)
Title: Improvements in aerial flight integrators
IPC: B64D45/00
Filed: 1931-09-10
Abstract: 392,163. Control of motors. CRANE, C. J. and OCKER, W. C., Brooks Field, Texas, U.S.A. Sept. 10, 1931, No. 25442. Convention date, Nov. 7, 1930. [Class 38 (iii).] Travelling to predetermined limits.-For indicating the amount of turn of aircraft an endless screen 20 depicting the sky 26 and earth 25 is mounted on rollers 21, 22, which are geared to a reversible shunt wound motor D, controlled by a gyroscope adapted to precess on turning of the aircraft. The precessional .axle 45a carries a member 47 having oppositely extending horizontal arms 48, 49, Fig. 7, and an upstanding spring arm 50 with a head contact 51. Precession of the gyroscope causes the contact 51 to engage one or other of the fixed contacts 74, 75 and the arm 48 or 49 to press on one or.other of the variable resistances 70, 71. The latter comprise cylinders containing carbon granules adapted to be compressed by pistons connected to the contact heads 87, the pressure on which controls the resistance of the carbon granules. Screws are provided for adjusting the initial compression of the granules. Referring to Fig. 9, the motor D is provided with field windings 90, 91 connected at one end to the armature 92 and at the other ends to relays 93, 94 brought into operation by the contacts 51, 74, 75 and adapted to control the direction of rotation of the motor. The circuit of the armature 92 is adapted to contain one or other of the resistances 70, 71 and the current therethrough and consequently the speed of the motor is proportional to the precession of the gyroscope. In a modification the armature 92 is connected to the contacts 74, 75 and the resistances 70, 71 control the current to the field windings of the motor.
Patent GB-186341-A (GB)
Title: Improvements in electric switches
IPC: H01H50/20
Filed: 1922-02-14
Abstract: 186,341. Metropolitan - Vickers Electrical Co., Ltd., (Assignees of Riley, L.G.). Feb. 14, 1921, [Convention date]. Electromagnetic switches; pneumatic actuation.- An electric contactor switch for motor control and other purposes is actuated by a pneumatic piston 4 in a cylinder 3 having a valve 17 controlled by an electromagnet 24. The U-shaped magnet core 19 supports one edge of a loose disc-armature 21 resting loosely on the valvespindle. The armature may be depressed manually by means of a pin 28. A solenoid controlled by a relay may replace the pneumatic cylinders controlled by a valve.
Patent GB-502798-A (GB)
Title: Hydrogenation and cracking of oils
IPC: C10G65/12
Filed: 1937-09-20
Abstract: 502,798. Converting petroleum and like oils to motor fuels. OCON, E. A. Sept. 20, 1937, No. 25519. [Class 32] Motor fuels, particularly gasoline, are produced by hydrogenating a liquid petroleum product or like oil in the liquid phase without cracking to any considerable extent at temperatures not exceeding 800‹ F., when no catalyst is used, or 750‹ F. when catalyst is used and at pressure of 40 to 200 atmospheres, separating materials present in the vapour phase from materials remaining in the liquid phase, and cracking the latter products above the critical temperature. As shown, crude oil and hydrogen under pressure are fed by a pump 11 to a coil 12 of smaller pipe than usual in the furnace 13, and passed into a hydrogenation chamber 16 provided with gas outlet 17. The liquid products are passed through line 19 to a tracking coil, where they are heated to about 1000‹ F., and thence to a reaction chamber 23, the products passing to a separator 26. In an example, a gas oil of 570-660‹ F., distillation range and having a critical temperature of 899‹ F. is treated with hydrogen at 100 atmos. and at 800‹ F., the hydrogenated oil being then cracked at 932‹ F., yielding 45 per cent of anti-knock gasoline. Specifications 296,429 and 328,618, [both in Class 32], are referred to.
Patent GB-393144-A (GB)
Title: Rotary tube furnace for desulphurising ores in a fine or dust-like condition
IPC: F27B7/00
Filed: 1932-09-14
Abstract: 393,144. Desulphurizing ores. METALLGES. AKT.-GES., 45, Bockenheimer Anlage, Frankfort-on-Main, Germany. Sept. 14, 1932, No. 25565. Convention date, Oct. 26, 1931. [Class 51 (ii).] Rotary furnaces.-Zinc and other ores in a fine or dust-like condition are desulphurized in a rotary furnace having at one end the charging- opening 12 and gas off-take flue 13, and at the other a large number of air inlets 11 which are distributed substantially uniformly over the cross section of the furnace. Additional ore may be blown in through nozzles such as 15, 15a, 16 projecting through the stationary end walls 2, 3 and these nozzles are so arranged that the particles will have a long trajectory. The furnace is not less than 3 metres in diameter, and may be fitted with lifting-blades 17.
Patent GB-745697-A (GB)
Title: Improvements in or relating to propulsive nozzles for jet propulsion units
Inventor: BERTIN JEAN HENRI
IPC: F02K1/30
Filed: 1953-09-16
Abstract: 745,697. Jet propulsion plant. SOC. NATIONALE D'ETUDE ET DE CONSTRUCTION DE MOTEURS D'AVIATION. Sept. 16, 1953 [Sept. 18, 1952], No. 25629/53. Class 110(3) In a device for varying the area of the nozzle of the jet pipe of a jet propulsion engine by means of an auxiliary fluid injected into the nozzle, near its outlet end, through a slot or like passage, the fluid is supplied through a duct which is further connected to a secondary jet propulsion nozzle, controllable valve means being provided for proportioning the supply of fluid to the slot and to the secondary nozzle. In the jet propulsion engine shown in Fig. 1, combustion gas is tapped off from combustion chambers 3 through holes 17 in an inner casing 15 and conveyed through the annular passage 14 between the inner casing 15 and an outer casing 16 to a circumferential slot 13 near the discharge nozzle of the jet pipe 5. The jet of gas flowing from the slot 13 impinges upon the main flow through the jet pipe and reduces the effective cross-sectional area of the discharge nozzle. Shutters 19, which overlap as shown in Fig. 3a are movable by means of a jack 20 between a position in which the slot 13 is fully closed and the tappedoff gas is discharged through an annular nozzle 18 and a position in which nozzle 18 is fully closed and the slot 13 is fully open. When reheat burners 6 are put into operation, the shutters 19 are simultaneously operated to close the slot 13 so as to increase the effective cross-sectional area of the discharge nozzle. Instead of being continuous, the slot 13 may comprise a number of separate segments. Combustion chambers or other heating devices may be provided within the annular passage 14. Water, steam or methanol may be injected into the tapped-off gas. Instead of combustion gas, compressed air tapped off from the air compressor 2 may be used. The annular passage may be contained within two casings spaced from and separate from the casing of the engine. The passage may only partially surround the engine and may be crescent-shaped in cross-section. Specification 745,630 is referred to.
Patent GB-372663-A (GB)
Title: Improvements in or relating to clothes props
IPC: D06F53/04
Filed: 1931-09-14
Abstract: 372,663. Clothes props. NICHOL, F., 7, Undercliffe Road, Eccleshill, Bradford, Yorkshire. Sept. 14, 1931, No. 25668. [Class 52 (v).] In a clothes prop of the kind having a pair of spring fingers 7 forming an eye into which the clothes line can be passed, the fingers are formed from a single strip of metal and are bent to contact with each other to form a closed eye 6. In the construction shown the fingers are attached to a metal cap 5 and the prop 1 is.made in two or more detachable sections connected by plain or screw-threaded spigot and socket connections 2.
Patent GB-506982-A (GB)
Title: Improvements in or relating to internal combustion engines using dust fuel
IPC: F02B45/02
Filed: 1938-09-02
Abstract: 506,982. Powdered - fuel engines. HANNOVERSCHE MASCHINENBAUAKT.-GES. Sept. 2, 1938, No. 25708. Convention date, Nov. 11, 1937. [Class 7 (ii)] Powdered fuel is admitted to a tube b having perforations c and mixes in the tube with air drawn through a passage a, and the mixture is deflected outwardly by a cone f and again by a passage d before assuming the original direction of flow from the tube and passing to the engine inlet valve. The casing l in which the passage d is formed may be adjustable to vary the cross section of the passage.
Patent GB-1304134-A (GB)
IPC: G11B5/02
Filed: 1971-04-19
Abstract: 1304134 Video systems NIPPON ELECTRIC CO Ltd 19 April 1971 [25 March 1970] 25764/71 Heading G5R In order to optimise the recording current levels applied to the respective heads of a colour video tape system, the tape is run at reduced speed and tracks recorded by a selected head are partially scanned by the succeeding head; the reproduced signal is then compared with a reference signal and the recording current adjusted accordingly. In the arrangement shown, a colour signal is frequency modulated on a carrier at 16 and is applied to a selected head, e.g. to head 101 via gate 15, level control 25, recording amplifier 7 and make-contact 3<SP>1</SP> of energized relay 3, and simultaneously to a gate 22, the gate 22 being arranged to pass either signals directly received from the modulator 16 or signals received from the reproducing systems, e.g. from head 102, via break contact 4<SP>11</SP> and equalizer 202, when monitoring tracks recorded by head 101. The respective signals from the gate, after demodulation at 23 and filtering at 24, are then compared as in Fig. 4 (not shown), and level control 25 is adjusted as required.
Patent GB-154768-A (GB)
Title: Improvements in display or show-cards
IPC: G09F1/02
Filed: 1919-10-21
Abstract: 154,768. Garratt, J. E. Oct. 21, 1919. Show cards. - An advertising device comprises a portion a of cardboard &c. representing a human or other figure connected to a card or other member b adapted to show ad. vertising matter, by the part d. The whole is balanced so that the figure maintains an upright position on a wire c. The part d may be hinged or otherwise attached to either part and may comprise a flexible portion to facilitate packing.