baber/WOPTO huggingface dataset:
Patent GB-1528013-A (GB)
Title: Variable frequency oscillators
IPC: H03L7/24
Filed: 1976-07-06
Abstract: 1528013 Surface acoustic wave oscillators DEFENCE SECRETARY OF STATE FOR 6 July 1976 [22 July 1975] 30689/75 Heading H3T An oscillator capable of oscillating at one of a plurality of predetermined frequencies, comprises an impulser 2, Fig. 1, for applying an impulse to a dispersive delay line 4, a variable time delay 3 controlling a gate 5 for gating the output of 4 into a multi-moded surface acoustic wave (SAW) oscillator 6, whereby the mode in which 6 oscillates is determined by the time at which the gate 5 is opened after the start of the impulse. A clock 1 synchronizes the impulse and the starting time (t 1 ), Fig. 3 (not shown), of the variable delay. The impulse is applied to delay line 4 comprising input and output SAW transducers 8, 9 respectively, Fig. 2, on a quartz substrate 7. The transducers are formed as shown so that a higher frequency wave has a shorter path than a lower frequency wave, and hence the longer the delay due to 3 the lower the frequency gated by 5 to the oscillator 6. Oscillator 6 may comprise an amplifier (12), Fig. 4 (not shown), with positive feedback through an SAW delay line (13), the possible oscillation modes being predetermined by the condition that the loop represents a whole number of wavelengths, allowance being made for small electrical phase shifts. The small frequency range (f 2 -f 3 ), Fig. 3 (not shown), applied to oscillator 6 through gate 5 determines the mode of oscillator 6, which then continues in that mode without further input. The frequency of the output of dispersive delay line 4 may vary linearly with time, and the amplitude may be either constant or varying, in the latter case by having transducer fingers of different lengths. With the apparatus as so far described the time interval between a clock pulse and the attainment of steady oscillations varies with the freqency selected; in order to compensate for this vanation a second dispersive delay line having the opposite frequency-time slope may be located between gate 5 and multi-moded oscillator 6.
Patent GB-202560-A (GB)
Title: Improvements in and relating to nurseries, greenhouses, market-halls and the like
IPC: A01G9/14
Filed: 1922-11-09
Abstract: 202,560. Barden, G. Nov. 9, 1922. Glass houses.-A nursery, greenhouse, market house, or the like is built with an easily portable metal framework comprising uprights 1 and wind stays 6 of L-section metal removably secured at their bases to concrete settings 2, and a removable metal super-structure of T and L- section bars 8 forming single span units on the ridge and furrow system, without intermediate furrow supports. The roof bars are bolted to bracket plates 5 and 13 at the ridges, these brackets also having attached to them the astragals 9 formed of T-section metal and crossties 7 and 14. The hollows are formed by brackets 11. fixed to the cross-ties 7, and are shaped to form gutters.
Patent GB-360614-A (GB)
Title: Improvements in or relating to garters
IPC: A41F11/16
Filed: 1930-10-14
Abstract: 360,614. Garter or sock suspenders. FAIRE BROS. & CO., Ltd. and FEWKES, H. A., Rutland Street, Leicester. Oct. 14, 1930, No. 30712. [Class 141.] In a garter or sock suspender of the type comprising an adjustable leg band, fastening means therefor, and a supporting device of the button-and-loop type, the band is provided with a pad having an integral depending part, or parts 12, 13, for the support of the button-and-loop members 16, 17. The pad consists of inner and outer members 8, 9 with one end of the band stitched between them, the extensions 12, 13 being turned upwards between the main parts to form loops 14, 15. The outer member 8 carries an eyelet 11 or a stud for engagement, respectively, with a flattened hook 5 or a metal loop on the other end of the band, to permit a swivelling action between the connected ends. Reference has been directed by the Comptroller to Specifications 198,964, 243,620, and 289,779, [all in Class 141, Wearing-apparel].
Patent GB-324368-A (GB)
Title: Improvements in or relating to cigarette making machinery
IPC: A24C5/58
Filed: 1928-10-24
Abstract: 324,368. Molins, W. E., Ruau, F. F., and Molins Machine Co., Ltd. Oct. 24, 1928. Cigarette-making machines. - In mechanism for affixing cork-tips, a web of paper 5 is fed over a gumming and engraving roller 6 and between guide rollers 11 - - 13, while a web of cork 1 is passed between rollers 2 and severed by knives 3, 4. The front edge of the cork web is engaged between rollers 12, 14 having corrugated surfaces 17, 18 and set so as to allow the material to slip until it is completely severed, after which it is pressed between the paper 5 and roller 12. The speeds of the webs 1, 5 are such that a double tip is fed and severed during the advancement of sufficient paper fur two cigarettes. Specifications 251,322, 263,964, and 268,019 are referred to.
Patent GB-302035-A (GB)
Title: Improved means for controlling the feed supply to evaporators such as steam generators
IPC: F22D5/24
Filed: 1927-11-16
Abstract: 302,035. Jackson, L. Mellersh-, (Doble Steam Motors Corporation. Nov. 16, 1927. Feedwater, supplying and controlling.- Water additional to the main feed supply is admitted to the tubes 7 of a flash boiler to maintain a constant steam temperature under the control of a thermostat 57 placed between the point of admission of the additional feed and the steam outlet pipe. The supply pipe 12 from the feed pump opens into a passage 11 in a casing containing a valve 27 regulating the return of excess water, and a valve 34 regulating the supply of the additional water through a pipe 38 to the upper or steam coils of the boiler. The valve 34 is opened by a solenoid 43 which is energized when a switch 58 is closed by the expansion of the outer element of the thermostat. The main feed passes through a restricted orifice 17, the size of which is regulated by a needle valve 18. The different pressures on the opposite sides of the orifice act upon the opposite sides of a spring-loaded cup-shaped piston forming an extension of the valve 27.
Patent GB-907910-A (GB)
Title: Process for manufacturing spheroidal alumina particles
IPC: C01F7/02
Filed: 1960-09-07
Abstract: Spheroidal alumina particles are prepared by mixing basic aluminium sulphate with an aluminum chloride hydrosol and urea, adding hexamethylenetetramine and passing the resulting mixture in droplets into an oil bath where they are retained until set to hydrogel spheroids which are subsequently dried and calcined.  The basic aluminium sulphate employed is prepared by simultaneously mixing solutions of aluminum sulphate and ammonium hydroxide whilst maintaining the pH in the range 5,5 to 6,5; the relative amounts of the basic aluminum sulphate and the aluminum chloride hydrosol are such that on the basis of alumina equivalents, a hydrosol/basic aluminum sulphate ratio of at 1:1 is employed, whilst the urea is employed in amounts such that the weight ratio of the alumina equivalent of the basic aluminum sulphate to urea is not excess of 3,5 to 1.  The basic aluminium sulphate which is the form of a finely divided slurry or semi-colloidal suspension is mixed with the other reactants according to one of two procedures.  According to the first, the basic aluminum sulphate precipitate is filtered and the filter cake cooled to below 49 DEG C. and mixed at this temperature with urea.  The aluminium chloride hydrosol, generally with an aluminum to chloride weight ratio of 0,9 to 1,25 is then added whilst still maintaining the temperature below 49 DEG C. after which the hexamethylenetetramine is added.  According to the second procedure, the basic aluminum sulphate slurry prior to the addition of urea is mixed with the aluminum chloride hydrosol and dissolved therein by digestion at a temperature in excess of 49 DEG C.; the clear solution is then cooled to below 49 DEG C. and urea is added followed by the hexamethylenetetramine.  According to an Example (2) basic aluminium sulphate slurry was mixed with aluminum chloride hydrosol (prepared by digesting aluminum metal in concentrated hydrochloric acid) and the mixture was digested at 95 DEG C. to form a water-white alumina hydrosol.  Urea and hexamethylenetetramine were then added and the hydrosol formed into hydrogel spheres which were subjected to aging in oil at 95 DEG C. then in ammonia followed by a hot water wash, drying at 200 DEG C. and calcining at 650 DEG C.  The resulting aluminum spheres had a bulk density of 0,75.  Specification 693,648 is referred to.
Patent GB-1498933-A (GB)
Title: Beta-trihaloethylcyclopropane derivatives processes for producing them and their conversion to beta-dihaloethenylcyclopropane derivatives
IPC: C07C61/04
Filed: 1976-02-02
Abstract: 1498933 Cyclopropane carboxylates SUMITOMO CHEMICAL CO Ltd 2 Feb 1976 [12 Feb 1975 (3)] 30956/77 Divided out of 1498931 Heading C2C  The invention comprises compounds of the formula where R 1  is H or alkyl, R<SP>1</SP> 3  is H, C 1-6  alkyl, acyl or alkoxycarbonyl, R is H or C 1-6  alkyl and Y 1 , Y 2  and Y 3  are F, Cl or Br. The compounds may be prepared by oxidizing compounds of the formula where R 2  is C 1-6  alkyl. The compounds may be treated with a base to yield compounds of the formula
Patent GB-193158-A (GB)
Title: Protecting device for electric installations working with alternating current against any disturbances which may be produced in their feeding circuit
IPC: H02H7/12
Filed: 1921-11-19
Abstract: 193,158. Marks, E. C. R.., (Soc. S.A.A.E.). Nov. 19, 1921. Protective arrangements; systems depending on the use of two or more machines.-An alternating-current system is protected from disturbing currents by means of an alternating-current machine connected in shunt to the system and producing a voltage equal and opposite to the normal current but providing a shunt path for the disturbing currents. Means are provided for annulling the resistance and self-inductance of the shunt path. An alternating-current system L1, L2, supplying a direct current circuit N through rectifiers 1 and 2, is protected from harmonics due to the rectifiers by placing a machine m in a shunt circuit. The resistance of the shunt circuit may be annulled by a generator placed in this circuit, and the self-inductance is annulled by placing a winding in the shunt circuit r, h and allowing the field of the winding g, h to traverse this winding. In the modification shown in Fig. 2, a rotating self-inductance h, g, driven by the machine m and provided with a short-circuit i, j is employed and a winding l, h in the shunt circuit is placed on the stator of the rotor h, g. In the modification shown in Fig. 3. the rotor h, g is connected to the secondary winding of a transformer, the machine m being connected to points q1, q2 on the primary windings of the transformer. When a three-phase system is protected the rotor h, g and the machine m are provided with three brushes.
Patent GB-1394088-A (GB)
Title: Reciprocating engine
IPC: F01B17/02
Filed: 1972-07-04
Abstract: 1394088 Reciprocating engines; engine turning gear ENERGETICS Inc 4 July 1972 [23 Aug 1971] 31181/72 Headings F1K F1M and F1S [Also in Division F2] A reciprocating engine comprises a cylinder 38, a piston 46 slidably positioned for reciprocation in the cylinder, the piston comprising a portion formed of flexible material having a socket opening 78 therein, and a piston-rod 48 having an end 76 shaped to fit closely in the socket opening, the socket opening being shaped to clamp the end of the piston-rod in the socket by the flexibility of the flexible material while permitting limited angular movement of the pistonrod relative to the piston and while retaining the end of the piston-rod in the socket opening in the piston during reciprocation of the piston in the cylinder. Referring to Fig. 3 (not shown) the engine comprises a plurality of radially arranged cylinders 38, a plurality of pistons 46 within the cylinders and a plurality of piston-rods 48 driving a crank-shaft 42. Tubing (not shown) connected between the engine and a source of compressed gas has means for heating the gas. The engine is particularly for turning an internal-combustion engine for starting it, the member 50 engaging the crank-shaft of the internal combustion engine. The pistons 46 are of plastics material. The rotary valve 40 is made of material sold under the registered Trade Mark TEFLON. The compressed gas tubing may be heated by passing it around the cylinder head of the internal-combustion engine.
Patent GB-1069677-A (GB)
Title: Improvements in or relating to a gas turbine installation
IPC: F02C7/14
Filed: 1964-08-04
Abstract: 1,069,677. Gas turbine plant. LICENTIA PATENT-VERWALTUNGS - G.m.b.H. Aug. 4, 1964 [July 25, 1963] No. 31197/64. Heading F1G. [Also in Division F2] In a lubricating oil cooling system for a gasturbine installation having an expansion gasturbine and a gas-fired gas-turbine unit or a set of such units acting as a gas generator or generators feeding said expansion gas-turbine, the lubricating oil from the expansion gas-turbine flows through the gas generator unit lubricating oil cooler as a coolant. In an embodiment, a lubricating oil circuit (10) of a gas-turbine unit acting as a gas generator contains a pump (12) which is driven by an electric motor (14). A lubricating oil circuit (11) of an expansion gasturbine has a pump (13) which is driven by an electric motor (15). The gas-turbine gas generator unit and the expansion gas-turbine have lubricating points (16, 17) respectively and the lubricating oil of the former turbine is cooled in a cooler (18) by the lubricating oil of the latter turbine. The lubricating oil of the expansion gas-turbine is cooled in a water/air cooled cooler (19) after leaving the lubricating points (17) and before entering the cooler (18). A quantity of lubricating oil from the expansion gas-turbine may by-pass the cooler (18) by passing through a valve (20) and pipe (21) back to the lubricating points (17). A heat-exchanger may be provided between the cooler (18) and the lubricating points (17) of the expansion gas-turbine.
Patent GB-658500-A (GB)
Title: Improvements in or relating to bolt adapters
IPC: E01B9/32
Filed: 1949-12-06
Abstract: 658,500. Bolts ; washers. LINDSAY, Ltd., H., and LINDSAY, H. Dec. 6, 1949, No. 31249. [Class 89(i)] [Also in Group X] A washer for converting an ordinary bolt into a hook bolt is formed on its under side to receive a movable tread piece that accommodates itself to the slope of the surface engaged. The washer 2 may be recessed to receive a tread piece 4 of triangular cross-section permitting tilting in one plane or the piece may be of spherical or pyramidal form to permit universal movement. The back of the washer is formed as a rigid abutment 5 or a flexible abutment 5a. In a modification it may be a screw threaded into a lug. The back of the tread piece may be flat, the projection then being formed in the recess which may be flanged and the flanges inturned to retain the treads in position. The face of the tread may be serrated.
Patent GB-1103945-A (GB)
Title: Deflection circuit
IPC: H04N5/12
Filed: 1965-07-22
Abstract: 1,103,945. Transistor time bases; automatic frequency control; controlled non-linear iriductors. MOTOROLA Inc. 22 July, 1965 [25 Sept., 1964], No. 31283/65. Headings H3A, H3B and H3T. A television horizontal deflection generator is made free-running by feeding flyback pulses through a series tuned circuit to the input of a transistor supplying the deflection coils. The circuit shown is of the resonant return type in which 46 is the damping diode. Flyback pulses derived by coil 75 are used to energize a series tuned input circuit 70, 62 to cause the circuit to be free running, negative half cycles rendering the driver transistor 42 conducting and positive half cycles passing through a diode 74. Synchronizing is effected by comparing sync. pulses and flyback pulses in a phase detector 32 which controls the current in a winding 63 and thus the inductance of the coil 62 of the resonant circuit. A potentiometer may provide a manual control. The coil 62 is wound on a ferrite C core 64a, the magnetic circuit of which is completed by a soft iron C core 64b carrying the winding 63, the current in which determines the inductance of coil 62. The cores pass through apertures in an aluminium or copper plate 68 which effectively provides a short-circuited turn round each limb of the core and thus prevents coupling between the coils.
Patent GB-1157329-A (GB)
Title: Improvements in or relating to Duplicating
IPC: B41M5/03
Filed: 1966-07-13
Abstract: 1,157,329. Printing surfaces. COLUMBIA RIBBON & CARBON MFG. CO. Inc. 13 July, 1966 [15 Oct., 1965], No. 31367/66. Heading B6C. [Also in Division D2] A duplicating process uses a flexible transfer sheet that carries a layer that can be transferred in mass under the effect of impact pressure, and comprises a synthetic-resinous binder material having dispersed therein ink that is exudable under the effects of pressure and comprises a fluid vehicle that is not soluble in or miscible with the binder, and colouring matter. A master sheet is laid on the ink layer of the transfer sheet, localized imaging pressures are applied, so that the binder material and ink are transferred as a whole in image form. The imaged surface of the master sheet is then laid on a copy sheet and overall pressure is applied to the two to squeeze out some of the ink from the binder material to form an image on the copy sheet. Several copy sheets may be pressed in succession to form several copies. The original images may be formed by typing, and the final pressure applied between rollers. Transfer of the imaging material may be helped by a frangible layer overlying it on the transfer sheet, or a release layer between it and the base sheet of the transfer sheet.
Patent GB-537028-A (GB)
Title: Improvements relating to controlling means for air craft internal combustion engines
IPC: F02D1/00
Filed: 1939-12-04
Abstract: 537,028. Fluid-pressure servomotor-control systems. C.A.V., Ltd., and EVANS, F. M. Dec. 4, 1939, No. 31388. [Class 135] Relates to controlling means for aircraft internal combustion engines of the supercharged or high compression types, in which a throttle valve in the induction system is responsive to both the action of a pilot's lever and to the action of a fluid operated servomechanism controlled by an aneroid mechanism having a variable datum device subject to the action of the pilot's lever, and further in which the control member of the fuel injection pump is also movable by the pilot's lever. According to the invention such controlling means has an additional fluid operated servo-mechanism responsive to the movement of the throttle valve and adapted to act on the datum device and on the control member of the fuel injection pump independently of the pilot's lever. The construction shown has a throttle valve b which can be moved by the pilot's lever f and by a servomotor piston i controlled by a bellows p. A link 5 connected with a bell crank d has cams 4, 7, which act on the datum device of the servomechanism and on the controlling member 10 of the fuel injection pump respectively. The above subject-matter is contained in Specification 537,027. In the present invention the link connecting the lever f and bellcrank d is replaced by a toggle e which is connected by members 16, 15, to the piston 13 of a second servomotor 14. A valve 17 controls the flow of fluid pressure through pipes 24, 25, to the ends of the cylinder of this servomotor, the valve being connected by links 18, 19, 20 to the throttle valve b. The valve 17 is arranged so that the piston 13 is held in the position shown until the throttle valve moves beyond the fully open position. The pipe 24 is then opened to fluid pressure and the pipe 25 to exhaust pressure. The piston 13 thereupon moves downwardly. This movement acts through the members 15, 16, e, d, 6, and 5, to move the cams 4, 7. The cam 4 acts on the members 2, z, to control the supply of fluid pressure to the piston i to move the valve b back to the fully open position, and the cam 7 acts on the control member 10 of the fuel injection pump 11 to reduce the supply of fuel to the engine. A position of equilibrium is thus reached with the valve b in the fully open position.
Patent GB-1033152-A (GB)
Title: Improvements in and relating to brick handling apparatus
Inventor: BENNETT CHARLES LESLIE
IPC: B65G57/26
Filed: 1962-04-19
Abstract: 1,033,152. Gripping and spacing bricks; stacking-machines. WOODFIELD BENNETT Ltd. April 19, 1962, No. 31587/63. Divided out of 1,033,151. [Headings B8C and B8H. The brick-stacking machine described in the parent Specification No 14803/61 has a pick-up head comprising a fixed row of grippers 66 and three movablerows of grippers 63-65. The rows 63, 64 are connected to the row 65 by rods 68, 69, so that when the row 65 is pushed away from the fixed row 66 by a pneumatic ram 67, the rows 63, 64 are also moved. The spacing produced between adjacent rows may be adjusted by moving stops 70. Bricks may thus be gripped and lifted when they are in adjacent rows and set down in spaced rows.
Patent GB-225077-A (GB)
Title: Improvements in or connected with chocolate and similar boxes, playing card boxes orcases and the like
IPC: A63F1/06
Filed: 1923-12-17
Abstract: 225,077. Schafer, J. B. Dec. 17, 1923. Indicators, trump and like.-A trump indicator for card games provided on the lid of a chocolate or like box, comprises a pointer c rotatably mounted and symbols representing the four suits depicted on the lid. Means may also be provided for indicating the score, e.g. by an arrangement. of dials and pointers.
Patent GB-450085-A (GB)
Title: Improvements in tilling implements
IPC: A01B13/04
Filed: 1934-11-05
Abstract: 450,085. Implements for working land. TURRI, G. G., 499, Collins Street, Melbourne, Australia. Nov. 5, 1934, No. 31743. [Class 6 (i)] In a plough or like implement having front wheels connected to steer in unison, rear wheels connected to steer in unison, and independent means adjacent the driver's seat for steering the front and rear wheels, two hand levers, connected, respectively, to the front and rear wheels, are pivoted towards opposite sides of the plough frame so that the driver seated between them can use both hands or either hand to steer, means being provided whereby the operative action of the hand levers may be coupled so that either or both of the hand levers can be brought into use to steer both pairs of wheels. In the disc plough shown in Fig. 1, the frame consists of side bars B<1>, B<2>, end bars B, B<3>, and braces B<4>, B<5>, part of the frame being higher than the remainder. The wheels G, G<1>, H, H<1> have thin edges to prevent side slip. The coupled front wheels G, G<1> are connected for steering to a hand lever D by a rod g<9> &c., the lever D being to the left of the driver's seat C. The second hand lever E has a lateral extension integral with a pivoted arm carrying the locking-rack d2 of the lever D and connected to the coupled rear wheel H<1> by a rod e<5> &c., so that both levers D, E move together when the catch of lever D engages the rack d<2>. Means are provided for holding the locking catches of the levers disengaged when required. A steering-pedal or foot-rest F is coupled to the rear wheels by an arm F<1> and a rod f<1>, &c. The ploughing discs P are mounted on an outwardly inclined floating beam L adjustably connected to the frame by a pin L<2> passing through selected holes. The beam L passes between adjustable bolts in a pivoted. stay L<1> and may be arched near the discs P. The inclination of the discs may be adjustable. The discs may be raised or lowered by means of a lever M having an adjustable spring connection M<1>, N with the pivoted stay L<1>. A spring N<1> connects the front end of the lever M to the frame. The lever M may be coupled to the steering-lever E. In a modification a number of discs are mounted on a shaft carried by a yoke connected to a floating beam and to a steadying bar and rod. An adjustable spring connection may connect the yoke to the lever M to oppose the tendency of the inner discs to rise. The implement may be motor driven or may be drawn by animals or tractors.