baber/WOPTO huggingface dataset:
Patent GB-1070903-A (GB)
Title: Improvements in or relating to frequency comparing systems
Inventor: PERKINS KENNETH GEORGE
IPC: H03D13/00
Filed: 1963-02-21
Abstract: 1,070,903. Automatic frequency control systems; frequency discriminators. PLESSEYU.K. Ltd. Feb. 12, 1964 [Feb. 21, 1963], No. 6946/63. Heading H3A. Two frequencies to be compared are applied at 1, 3 through respective gates 2, 4, opened alternately by clock pulses from a control unit 5, to a counter 7 which, for each frequency burst received, counts a pre-determined number of cycles thereof and opens a gate 11 for a time proportional to the period of that frequency. Clock pulses from unit 5 are fed over a delay unit 8 to preclude operation of the counter 7 until each frequency burst arrives thereat. Gate 11 therefore allows a capacitor 12 to be charged by a constant current I to a voltage proportional to the period of the frequency being counted before being discharged over a gate 14 also controlled by a clock pulse through delay 13 from the switching control 5. The square wave voltage on capacitor 12 is sampled by a bi-directional gate 15 also pulse controlled from control 5 so that its charge is shared with a capacitor 17 the voltage across which is thus a square wave signal of amplitude proportional to the frequency error. This voltage is amplified at 18 and D.C. restored to earth by a controlled gate 21 so that the voltage applied to integrator 20 indicates in magnitude and polarity the frequency difference of the one signal relative to the other reference frequency. This may be re-modulated at 22 on an A.C. reference frequency or the D.C. output may stabilize the signal frequency. The signal may be a frequency shift or amplitude modulated telegraph frequency whose modulation is detected by a keying monitor 6 controlling the switch 5 so that it is not operated during signal changes. The frequency control system may be cut out during low signal to noise ratio.
Patent GB-215148-A (GB)
Title: Improvements in and relating to domestic boilers
IPC: F24H1/26
Filed: 1923-03-10
Abstract: 215,148. Kitchen, J., and Balmforth & Co., Ltd., T. March 10, 1923. Closed solid - fuel stoves; cooking-stoves; baffles.-In a stove having a water-jacket 4 spaced from a hot-plate 9 to leave a flue 7, the baffle 10 extends down to the water-jacket and extend's around substantially three quarters of its inside edge. The hot plate may be removed and be given a half rotation so that the gases may pass directly to the flue. The stove may be cylindrical with the upper end pressed into rectangular form and the inner walls may converge at the top. The dropdoor may have mica panes 15.
Patent GB-1202844-A (GB)
Title: Sintered alloys of a chromium carbide-tungsten carbide-nickel system
Inventor: MITO SATORU
IPC: C22C29/06
Filed: 1969-02-10
Abstract: 1,202,844. Sintered carbide alloys. TOKYO SHIBAURA ELECTRIC CO. Ltd. Feb. 10, 1969 [Feb. 10, 1968], No.7029/69. Heading C7A and C7D] A sintered alloy consists of:- Cr carbide 25-75% W carbide 10-43% and Ni 15-50% with a preferred maximum of 1% in total of impurities such as Fe, Mo and Co. The alloys are made by pre-sintering in a non-oxidizing atmosphere, after shaping (e. g. by press moulding, slip casting, direct powder rolling or extrusion) and then liquid phase sintering (e. g. in a neutral or reducing atmosphere). The final density is 98-99% of the theoretical density.
Patent GB-131087-A (GB)
Title: An Improved Process for the De-hydration of Tar.
Inventor: KLEIN CARL ADOLPHE
IPC: C10C1/02
Filed: 1918-04-26
Abstract: 131,087. Klein, C. A. April 26, 1918. Tar.-Relates to the dehydration of tar, particularly that obtained from producer plants, and consists in bringing the watery tar into intimate contact with a convenient excess of water at a temperature above 40‹ C. The process may be carried out by forcing the heated tar through a perforated screen into a vessel containing water at a temperature above 40‹ C.; by causing a jet of steam to impinge on a jet of tar above the water vessel; by heating the tar in an excess of water by jets of live steam; or by violent mechanical agitation of the tar in the presence of an excess of water heated to a temperature above 40‹ C. The tar is finally allowed to settle and is stated to contain less than 4 per cent of water.
Patent GB-1533274-A (GB)
Title: Hopper device for tractor vehicles
IPC: E02F3/34
Filed: 1976-02-20
Abstract: 1533274 Hoppers for tractors R KEENAN P KEENAN & J KEENAN 20 Feb 1976 [24 Feb 1975] 07033/76 Heading B8H A hopper 10, for mounting on an agricultural tractor of the kind furnished with a three-point suspension including a pair of hydraulically operated lifting links which extend rearwardly and an upper stabilizing link pivoted to an anchor pin above the rear axle, comprises pivots D on gussets 2 in the region of the bottom of the hopper 10 for the respective pivotal attachment of each of the lower lifting links 1 (shown diagrammatically) pivoted on the tractor at B, and a connecting link 3, pivoted at C on an arm 13 extending downwardly from the bottom of the hopper 10, for attachment to the anchor pivot pin at A on the tractor. The tractor and the hopper 10 in use form two opposite links AB, CD of a four-bar chain with crossed links 1, 3 dimensioned so that in one position of the lifting links 1 the hopper 10 is in a lowered, horizontal position (full lines), while the hopper 10 may be raised and turned from this position to an upright position by upward movement of the lifting links 1 (broken lines). In the embodiment illustrated in Figs. 2 to 4 (not shown) the hopper 10 is fitted with a lateral, closable outlet with a discharge screw in the bottom of the hopper 10.
Patent GB-600501-A (GB)
Title: Apparatus for measuring the limit of strain of materials subjected to alternating stress
IPC: G01N3/38
Filed: 1940-04-18
Abstract: 600,501. Testing physical qualities. COR, P. April 18, 1940, No. 7036. [A Specification was laid open to inspection under Sect 91 of the Acts, Oct. 21, 1941.] [Class 106 (ii)] Apparatus for the testing of materials under alternating stress comprises a fixed vice for holding the test-piece, a movable vice for clamping the test-piece at an adjustable position, means for adjusting the clamping pressure, oscillatory exciting means operative on the unsupported part of the test-piece, and means for giving an indication of increase of amplitude of the oscillation of the test-piece. The specimen strip 7, Fig. 2, is gripped at one end by a vice 2 fixed to the main frame 1. A second vice 3 frictionally engages the strip 7 and is movable along the latter guided by fixed rods 4, so that the length of the specimen extending to the left beyond the vice 3 is varied. The free end of the specimen is subjected to the action of an electromagnet 8 adjustably mounted on the frame and supplied with alternating current so as to vibrate it in the direction indicated in dotted lines in the frequency of the alternating current or some multiple thereof. In use, the magnet is connected up and the specimen vibrated, the vice 3 being moved to a position in which the amplitude is a maximum, this point indicating resonance. This frequency may be found by means of a stroboscope. The amplitude of the vibration may be measured by a contact device 18, Fig. 3, in circuit with a lamp 25 and which is adjustable on the machine bed relatively to a scale 21 by screws so that it is moved up towards' the end of the vibrating strip until the latter is touched whereupon contact is broken and the lamp goes out.
Patent GB-1287807-A (GB)
Title: Regulating means for automatic transmissions on motor vehicles
IPC: F16H61/02
Filed: 1970-02-13
Abstract: 1287807 Change-speed control DAIMLERBENZ AG 13 Feb 1970 [15 Feb 1969] 7082/70 Heading F2D A fluid pressure regulating device for varying steplessly or progressively, in one or more steps, the engaging force i.e. servo-pressure applied to the ratio establishing clutches and brake bands of an automatic transmission for motorvehicles such as trucks and lorries in accordance with variation in the load placed upon the vehicle or the addition of a trailer to the vehicle, comprises a fluid-pressure regulating slide valve 21 directly connected via a rod 20 to an engine vacuum, or pressure (not shown) controlled diaphragm 15 rightwardly biasing the valve 21 to modulate the pressure from a pressure source 23 to a low regulated pressure via a duct 22 to the clutches and brake bands of the transmission, the arrangement including an electromagnet 10 the armature 12 of which when energized via the winding 11, by the connection of a trailer plug and socket 36, 34 (Fig. 1) on a lever switch 54 (Fig. 7) deflected into contact at 57 under additional load placed on the vehicle, moves leftwardly against a spring loaded collar 28 (Fig. 1), normally held inoperative by the spring 30 and a further collar 27 between circlips 27a, to leftwardly spring bias the slide valve 21 to effect a higher regulated pressure in accordance with the increased load added to the vehicle. In Fig. 2, the armature 37 is directly connected to the slide valve rod 20 and diaphragm 15, the increase in fluid pressure at 22 being controlled by leftwardly moving the armature 37, and thus rod 20, by direct regulation of the current supplied to the winding 11. In Fig. 7, a potentiometer or series of resistors may be incorporated between the contacts 56 and 57 or instead of the latter, so that as the load placed on the vehicle is increased the current through the electromagnet is increased gradually or in one or more steps.
Patent GB-899157-A (GB)
Title: Improvements in or relating to telephone systems
Inventor: GALVIN JOHN LESLIE
IPC: H04M15/04
Filed: 1960-03-01
Abstract: 899,157. Semi-automatic exchange systems. AUTOMATIC TELEPHONE & ELECTRIC CO. Ltd. Feb. 6, 1961 [March 1, 1960], No. 7145/60. Class 40 (4). In a system in which toll and trunk calls are set up automatically by operators, a check on the dockets made out for such calls is provided by a storage relay set SRS which receives the digits dialled by the operator and also an indication of the identity of the manual board, this information being transferred subsequently to a docketing machine DM. The manual board MB, which may be of the sleeve control type, has access to a number of junctions JC, the speaking path being over wires SPC and the control path over wire SCL and a " docket relay set " DRS. A storage relay set SRS becomes associated when a junction is seized and receives the dialled digits and, when the dialling key is restored, digits denoting the position from an identification circuit PIC. Upon the reply of the called party, the information goes to the docketing machine DM where it may be recorded on tape or punched cards. The time of the call may be added, and an indication may be given if the operator dials before the storage relay set is associated. An overflow meter in DRS is operated if no storage relay set is available. The identification circuit PIC, which become associated temporarily with the coil circuit in use, is described with reference to Fig. 2 (not shown).
Patent GB-223494-A (GB)
Title: Improved safety guard for motor driven vehicles
IPC: B60R21/34
Filed: 1924-03-21
Abstract: 223,494. Kirkland, J. March 21, 1924. Obstruction - removers. - In a safety - guard for motor driven vehicles of the type comprising a resiliently suspended roller adapted to be forced into contact with the front wheels when an obstruction is met, the roller has a resilient surface provided with longitudinal corrugations 17. The roller 13 is suspended by brackets 16 from the springs 12 or from the mud-guard of the vehicle. The roller is forced bv an obstruction on to the wheels of the vehicle and rotates in the opposite direction to them. A pawl 28 may engage the corrugations to prevent the roller revolving in the same direction as the wheels and a shield may extend along the top of the roller between the bracket's 16.
Patent GB-730773-A (GB)
Title: Improvements in or relating to electric discharge devices
IPC: H01J23/11
Filed: 1952-03-21
Abstract: 730,773. Travelling-wave tubes; magnetron amplifiers. WESTERN ELECTRIC CO., Inc. March 21, 1952 [April 11, 1951], No. 7319/52. Class 39 (1). To reduce the effect of noise fluctuations in the electron stream of a travelling wave tube in which there is cumulative interaction between the electron stream and an electromagnetic wave to secure gain for the wave, the wave transmission circuit is continuous and includes a preliminary section 11 and a main section 13 in both of which interaction occurs, and an intermediate section 12 in which interaction is inhibited, but is so designed that the increasing wave component of the noise induced at the beginning of the preliminary section is attenuated in magnitude and shifted in phase so as to be equal in magnitude and opposite in phase at the beginning of the main section to the increasing wave component of the noise induced at that point, and thereby to secure cancellation of this component. The main section is of sufficient length to make the other components of the noise wave become unimportant. The input signal may be inserted at the beginning of the main section. The travelling-wave tube may be of the magnetron type, Fig. 3 (not shown). For inhibiting interaction between the electron stream and the wave in the intermediate section the wave velocity in this section may be changed, for instance with the wave transmission circuit in the form of a helix, by altering the pitch or radius of the helix, or by surrounding the helix by a dielectric cylinder. Alternatively the average velocity of the electron stream may be modified. A conducting cylinder 54, Fig. 4c, between the preliminary section 51 and the main section 53 of the helix is at a D.C. potential with respect to the helix. Another method is simply to displace the intermediate section 42, Fig. 4b, with respect to the preliminary and main sections 41, 43. These methods may be applied to a wave-guiding structure comprising a conductor having a series of lateral slots along the path of the electron stream. In Fig. 6a the spacing of the slots is altered, in Fig. 6b the slots are displaced, in Fig. 6c the slots are filled with dielectric, and in Fig. 6d the intermediate section 92 is at a D.C. potential with respect to the preliminary and main sections 91, 93. Specifications 652,155, 654,386 and 714,832 are referred to.
Patent GB-145153-A (GB)
Title: Improvements in or connected with ball bearings
IPC: B62K19/34
Filed: 1919-03-25
Abstract: 145,153. McDonald, L. B. March 25, 1919. Ball bearings.-Annular ball bearings are fitted to bottom brackets and hubs of motor or other cycles so as to be readily removable, and are positioned by shoulders a', b<1> in approximately the same plane, formed in the bracket or hub a<2> and on the spindle b. As shown, the shoulder a<1> is formed on a threaded liner l inserted in the end of the bracket. A threaded plug h screwed into the bracket or liner bears against the outer race only, and is locked by a screw m which also serves as a lubricator. The inner ball race is not clamped. When the liner is dispensed with, the race c may be locked by a grub screw inserted through a hole in the bracket.
Patent GB-1139542-A (GB)
Title: Controlling ground working operations
IPC: G01C15/00
Filed: 1966-02-21
Abstract: 1,139,542. Datum level indication in earthworking or tunnelling operations. WILLIAM F. REES Ltd. and J. B. GARNETT. 16 Feb., 1967 [21 Feb., 1966], No. 7533/67. Heading E1F. A datum level indication in earth-working or tunnelling operations is provided by a narrow laser beam, which may be projected along a datum level, or be caused to sweep to and fro over a datum plane, or may be projected along a datum level after reflection when emitted from a laser source not at the datum level. Machines, e.g. dozers or tunnelling machines, may be maintained manually or automatically on a datum level defined by the beam, which co-operates with sensors provided on the machines.
Patent GB-1059294-A (GB)
Title: Refrigeration apparatus
IPC: F25B49/02
Filed: 1964-02-24
Abstract: 1,059,294. Refrigerating. CARRIER CORPORATION. Feb. 24, 1964 [July 22, 1963] No. 7696/64. Heading F4H. A compression - condensation refrigeration system comprises capacity control means for regulating the flow of refrigerant from the evaporator to the compressor in dependence on the load on the system and means responsive to the operation of the capacity control means for supplying a portion of the compressor discharge to the evaporator. As shown, the capacity control means comprises adjustable vanes 30 in the suction line 28 and the means for supplying part of the compressor discharge to the evaporator 20 comprises a conduit 32 which includes a solenoid valve 34. An electric motor 42 is provided for controlling the position of the vanes 30 through a link and pulley system (Fig. 2, not shown) and the current supply to the motor is varied by a thermally responsive element 61 mounted on the inlet to a tube bundle 21 in the evaporator, which element controls a variable resistance 64 in the motor supply. As the temperature sensed by element 61 falls, i.e. under low load conditions, the guide vanes are moved to a closed position and a cam on the shaft of motor 42 (Fig. 3, not shown) engages a switch to energize the solenoid valve 34 so that high pressure refrigerant from line 32 enters the bottom of the evaporator 20. The pressure of the liquid refrigerant entering the evaporator from line 19 is thus increased and wetting of all of the tubes of bundle 21 is ensured. A refrigerant distribution system comprising superimposed baffles 24 and 25 having apertures in their top and side walls respectively and an apertured plate 26 is provided to increase the velocity of the entering refrigerant.
Patent GB-743345-A (GB)
Title: Improvements in or relating to the manufacture of resinous phenolic bodies
IPC: C08G59/00
Filed: 1953-03-19
Abstract: A synthetic resin is made by condensing a polyhydric phenol with a difunctional aliphatic compound, reactive with the phenol, under aqueous alkaline conditions and in the presence of a divalent tin compound in amount sufficient to enhance the achromic character of the resin (i.e. to produce a resin lighter or paler in colour than would be the case in the absence of the tin compound).  Reactants specified are phenols-di(phenylphenol),di(4-hydroxy-phenyl)-methylmethane, di(4 - hydroxy - phenyl) - methylethyl - methane, di(4 - hydroxy - phenyl) - propyl - methane, di(4 - hydroxyphenyl) - dipropylmethane, di(4 - hydroxy - phenyl) - phenylmethane, p - p1 - dihydroxy - diphenyl - dimethyl - methane and di(4 - hydroxy - phenyl)-dimethyl - methane; aliphatic compounds-formaldehyde, epichlorhydrin, b  - b 1 - dichlorodiethylether and 2 - 21 - dichlorodiisopropyl ether; tin compounds-stannous chloride, sodium stannite, stannous oxalate and stannous hydroxide.  The tin salts employed are readily removed by washing after resin formation.  In making the resins the phenol is dispersed in aqueous alkali and the tin compound is then added followed by the aliphatic reactant, preferably in increments, with or without additional solvent, such as methyl isobutyl ketone, and the resulting mixture is heated to reflux.  Upon completion of the reaction, the mass is neutralized with an acid and washed.  Examples and control experiments are given.
Patent GB-1033514-A (GB)
Title: Epoxy resin molding compositions
IPC: C08G59/18
Filed: 1963-02-26
Abstract: Compacted, stable, thermosetting and nonsegregating epoxy resin-moulding compositions are obtained by intimately mixing a polyepoxide and a curing agent in finely-divided solid form in the substantial absence of kneading forces and compacting the mixture by means of rollers in momentary pressure contact therewith for a period and a temperature insufficient to cause appreciable reaction between the polyepoxide and the curing agent. The compositions may also contain pigments, filters, release agents and accelerators.  The mixing preferably takes place in the substantial absence of kneading forces.  In a typical example, (1) an epoxidized novolac, methylene-dianiline, clay, barytes and calcium stearate in finely ground form are mixed together with resorcinol in a ribbon blender and the pulveru lent mixture is compacted by 2 passes through parallel steel rollers having a roll clearance of 0.10 inch, the rollers supplying an initial bearing pressure of 5,000 p.s.i. and having an operating varying pressure of 15,000 p.s.i. and a speed of 10-30 r.p.m., to form a thin ribbon which is granulated in a chopper mill and screened.
Patent GB-540424-A (GB)
Title: Improvements in or relating to conveyors
IPC: B65G17/26
Filed: 1940-04-29
Abstract: 540,424. Chain conveyers. BRITISH THOMSON-HOUSTON CO., Ltd. April 29, 1940, No. 7671. Convention date, April 27, 1939. [Class 78 (i)] A conveyer apparatus for articles such as the stems or stem tubes of electric lamps comprises a first conveyer having holders for the articles, a second conveyer adjacent to the first andhaving holders for receiving the articles, means for transferring the articles from the holders of the first conveyer to those of the second and for intermittently indexing the second conveyer, and control means mounted along the path of the first conveyer and operable by the presence of an article in a holder of the first conveyer to cause the indexing means to be operated only when an article is present in the holder. The first conveyer is bodily reciprocated to transfer an article to the second conveyer when the latter has been indexed so as to receive the article. As shown in Fig. 1, the conveyer 10 advances the holders 13 step-by-step to an unloading station, where the articles are transferred automatically to the storage conveyer 11. At a position A of the conveyer 10, a stem 14 is located between an air nozzle 17 and a vane 18 connected to a mercury switch 20. In the absence of a stem at the position A, the switch 20 breaks the circuit of a solenoid 40, the armature 41 of which actuates the shaft 38 of the conveyer sprocket 39 through a lever 43 and pawl- and-ratchet gear 49, 47. The movement of the conveyer 11 advances an empty holder 13 to the loading position C, and brings the stem 14 from position A to position B, in which transfer to the conveyer 11 is effected automatically by a sideways movement of the sprocket 15. The bracket 27 supporting the pin 28 of the sprocket, and also carrying the air nozzle 17, has a lower portion 31 connected by a spring 35 to a lever 32 bearing against a stationary stop screw 34, and serving to transfer the stem 36. The taper of the flared upper end of the stem 36 enables sideways pressure to raise it in the opening 131 of the holder 13 of the conveyer 10 and move it across to the holder of the conveyer 11.
Patent GB-1513530-A (GB)
Title: Piezoelectric transducers
IPC: B06B1/06
Filed: 1976-02-26
Abstract: 1513530 Piezoelectric transducers FRANCE ARMED FORCES MINISTER OF 26 Feb 1976 [27 Feb 1975] 07726/76 Heading H4J A plurality of stack piezolelectric transducer assemblies each having a transmitting bell 4, 5 at one end thereof are connected together at their other ends by a common counter mass 9. The counter mass also serves for fixing the transducer on a support and for providing the electrical connections 10. The length of the transducer is one half the wavelength of the fundamental acoustic vibration of the system. The transducer may be used underwater and may be rotatable through 180 degrees. The housing 11 may be an elastomeric material e.g. a layer of polyurethane resin. An omnidirectional transducer comprising four stack transducers arranged symmetrically about a common central counter mass is illustrated in Figure 3 (not shown). The device of Figure 1 may be surrounded in the region between the bells by an acoustic reflector known per se to give it omnidirectional properties.