baber/WOPTO huggingface dataset:
Patent GB-719780-A (GB)
Title: Improvements in or relating to oscillation generators
IPC: A47C17/207
Filed: 1951-07-09
Abstract: 719,780. Generating high frequency oscillations. GENERAL ELECTRIC CO., Ltd., and BRYDEN. J. E. June 25, 1952 [July 9. 1951], No. 16265/51, Classes 40, (5) and 40 (6)  A harmonic generator and selector comprises a mixer 1 fed with a variable frequency oscillation and with the harmonics of the second harmonic of a reference oscillator 3. A voltage derived from a difference frequency output of the mixer is fed to a further mixer 11 together with a reference frequency oscillation or the second harmonic thereof (according to the position of a switch 12). An output from this mixer is fed through either of two band pass filters 13, 14 having their midfrequencies spaced by the reference frequency and a voltage derived from the filter is fed to a further mixer, 17 to which is fed a second variable frequency oscillation. The desired harmonic is selected from the output of this mixer. The two variable frequency oscillations are derived from a single oscillator 2 and the circuit is such that the particular harmonic selected is determined by the frequency of the variable oscillator, the position of the switch 12 and which of the two band pass filters are used, and the output frequency is independent of small variations of the frequency of the variable frequency oscillations. In the circuit shown, with both switches 12 and 15 to the left the output frequency is the (2N-1)th harmonic of the reference oscillation and with the switches to the right the (2N-2)th harmonic is selected, N being determined by the frequency of the oscillator 2. Thus by varying the frequency of oscillator 2 in steps and using both switch positions at each step a range of adjacent harmonics may be produced. The filter 8 preferably has a mid-frequency which falls midway between two of the harmonics from the harmonic generator 6.
Patent GB-530050-A (GB)
Title: Improvements in or relating to hydraulically actuated pumps
IPC: F01L25/06
Filed: 1939-06-02
Abstract: 530,050. Reciprocating pumps. STEVENS, A. H. (Jackson Co., B.). June 2, 1939. No. 16275. [Class 102 (i)] In a hydraulically operated piston-pump with surge means actuated only during reversal of the pump stroke, either the pump or the surge means or each comprises two cylinders with inter-connected pistons. A pump for liquid drilling-mud comprises a mud box 24 communicating, through inlet valves 28, cylinders 1, 2 containing inter-connected pistons 4, 6, outlet valves 28, and a surge regulator R, with a discharge opening 38. Motive fluid 51 is admitted alternately to the inner ends of the cylinders 1, 2 by ports 55, 57 and valves 42, 43 operated by pistons 44, 45 and fluid admitted by pilot valves 83, 84 which are operated by cams 73 on the pistons 4, 6, exhaust being effected by the same valves and ports 62, 91. The surge regulator comprises a freely movable piston 102 in a cylinder 101 connected at its lower end with the mud discharge ports 34 and at its upper end with the motive fluid supply 51. In a modification the mud valves, not shown, are arranged in the central casting 3 and are connected to the outer ends of the cylinders by annular ports 146, Fig. 5, and openings 147. The pilot valves 83, 84 are operated by levers on shafts 175 oscillated by levers thereon and the cams 73. The movement of the main pistons 4, 6 may be slowed down at the ends of the stroke by throttling the main valves 42, 43 or by providing dash pots 110, 111, Fig. 1. The surge regulator may comprise two pistons 183, 184, Fig. 6, connected by a tube 185 and adapted to move in cylinders 181, 182 the ports 201, 202, 194, 195 of which are connected respectively to the motive fluid supply, exhaust, the mud inlet and the mud outlet. This regulates the flow in all four passages. In order to equalize the flow more completely the surge pistons and their connecting rod are made of the same diameters as the main pistons and their rod 5 as shown in Fig. 29 and the port 202, instead of being permanently joined to exhaust, is connected to ports 287 controlled by pistons 281 of the main valves 42, 43 to admit low pressure fluid, which is also used to operate the pilot valve, so as to move the pistons towards position shown in Fig. 25 during the main part of each stroke of the main pistons 4, 6 and to allow this low pressure fluid to escape when the valves 42, 43 are moving from one end position to the other and the pistons 4, 6 are reversing. If the motive fluid is supplied by a multi-stage centrifugal pump the low pressure fluid may be bled from the first stage. Specification 530,058, [Group XXI], is referred to.
Patent GB-567061-A (GB)
Title: Improvements in or relating to mountings for machine guns and automatic rifles
IPC: F41A27/06
Filed: 1939-06-03
Abstract: 567,061. Machine-gun mountings. MOTLEY, L. June 3, 1939, No. 16362. [Classes 92 (i) and 92 (ii)] Relates to mountings for machine guns and automatic rifles of the kind which a plurality of guns and a seat for the gunner are rotatable about the same upright axis for traverse, the guns being also pivoted for elevation and the traverse and elevation of the guns being directly effected by the gunner without the use of gearing. According to the invention, the pivotal axis for elevation is situated behind the said upright axis of traverse. In the form shown, the gunner occupying a seat 1 is surrounded by a frame 3, the side members of which each support three Bren guns 2 attached by front and rear spigots 14, 16 to sockets 13, 15. The frame is directly moved by the gunner by handles 26 about a transverse axis Y in a bearing supported from the seat by a structure 8, 9, and the gunner trains the seat and frame by pressing with his feet against the floor or against a fixed foot rest 27a. The weight of the parts moving about the axis Y is counterbalanced by adjustable springs 20. A trigger near the right hand grip 26 serves to rotate a shaft 29 connected by link 31 to a rocking shaft 33 linked by rods 35 to the gun triggers for simultaneous discharge. A similar trigger 39 serves to operate mechanism for braking the movements of the seat. The gunner is protected by shields 49, 50 and open sights are provided comprising a front bead 51 and a pair of rear beads carried by triangulated rod framework.
Patent GB-113779-A (GB)
Title: Improvements in Horizontal Coking Ovens.
IPC: C10B21/10
Filed: 1917-11-09
Abstract: 113,779. Soc. Franco-Belge des Fours a Coke. Feb. 26, 1917, [Convention date]. Coke ovens. - Ovens with horizontal coking chambers and vertical heating-flues between them are provided with regenerators in their lower parts for generator gas and air, which are worked without reversal. As shown in the drawings, the oven is divided transversely into two symmetrical parts, and gas and air regenerators G and A', respectively, are arranged alternately beneath the coking chambers. The heated air and gas rise through channels 2, 21, respectively, and meet at the bases of the heating-flues 5. The products of combustion descend through vertical flues 7 at the centre of the oven to the sole flues 9, and pass through the regenerators in a sinuous course. The gas-regenerators, and if desired the airregenerators also, are divided transversely into sections which are separately supplied with gas. Air enters the air-regenerators at the base at 1. The Specification as open to inspection under Sect. 91 (3) (a.) comprises also supplementary burners B<1> for coke-oven gas located between the air and gas channels of the main burners. This subject-matter does not appear in the Specification as accepted.
Patent GB-1078372-A (GB)
Title: Improvements in the threading of sewing machine needles
Inventor: BENNISON MICHAEL NEWSTEAD
IPC: D05B87/02
Filed: 1965-04-20
Abstract: 1,078,372. Sewing machines. W. J. CLARKSON Ltd. March 14, 1966 [April 20, 1965; Aug. 18, 1965; Sept. 6, 1965], Nos. 16512/65, 35384/65 and 37916/65. Heading DIG. A mechanical threading device, Figs. 1 and 2, for the needle 36 comprises a hooked wire 12, 15 which passes through the needle eye to engage the thread 37a and which is carried at one end of a rod 9. The other end of rod 9 is secured to a lever 8 pivoted at 7 on a block which is slidable on a guide bar 5 on a bracket 1 secured to the machine. A second lever 17 also pivoted at 7 has a bar 18 extending therefrom and carrying a block 20 at its other end having an arcuate slot in which the end of rod 9 carrying the wire 12, 15 moves, the wire passing through a hole at the end of the slot. Levers 8 and 17 are interconnected by a coil spring 19 and lever 8 is biassed upwardly by a spring 13. An actuating lever 26 with an extension arm 30 and finger piece 31 is pivoted about 27 and biassed upwardly by a spring 32. A pin and slot connection is provided between lever 26 and lever 8 so that on depression of finger piece 31 thet levers 8, 17 and block 6 are moved down bodily until a projection 34 on block 6 engages the needle clamp 35, this position being such that the threader wire is in alignment with the needle eye. Continued depression of 31 results in arcuate movement of levers 8 and 17 until a locating groove on the end of block 20 engages the needle. Arm 8 then moves relatively to arm 17 and hook is passed through the eye of the needle to engage thread 37a. On release of the finger piece 31 the hook 15 draws the thread through the eye and the parts resume their original positions under the spring tensions. In a modification, Fig. 6, the hooked wire 12, 15 is carried on an arm 40 which is pivoted at 39 to another spring-loaded arm 38 on a fixed pivot 27. On actuating lever 47 has a roller 48 co-operating with a surface 49 on arm 40 so that on depression of lever 47 arms 40 and 38 move downwardly together, owing to a bias spring 46, until arm 38 engages the needle clamp. The threader wire is then in alignment with the needle eye and continued depression of lever 47 moves arm 40 against spring 46 to pass the hook through the needle eye.
Patent GB-436974-A (GB)
Title: Apparatus for playing an amusement game
IPC: G07F17/38
Filed: 1934-06-04
Abstract: 436,974. Games. HAWORTH, T., 626, Lytham Road, Blackpool. June 4, 1934, No. 16539. [Class 132 (ii)] An amusement game apparatus for fairgrounds &c. comprises a hand-controlled spring gun 7 for projecting a coin or other missile along a semi-enclosed track 8 forming a continuation of the gun and passing over the head of the attendant or in other convenient direction towards a target 9, an automaton 4 (driven by an electric motor) for oscillating the extremity 8<a> of the track, means in the target 9 for giving a visible indication of the result of the shot, means for catching the spent coins and means for quickly resetting the displaced parts in the starting position. The coin is inserted through a slot 13, Fig. 3, and assumes the position 14. A handle 20 is now pulled back thereby permitting a cam 23 and spring 30 to rotate a catch rod 25, until an arm 27 moves over the top of the coin and holds it down whilst a spring 16 is compressed against the under edge of the coin by a plunger 17 connected to the handle by a pin and slot. On further backward movement of the handle the cam withdraws the arm 27 and the coin is projected along the track and falls out of the oscillating end 8<a> on to a row of pivoted keys 43 constituting the target and numbered and coloured in accordance with a suitable scoring system. The keys when displaced assume a vertical position and are reset by rotating a knob. The coins pass to the bottom of the target casing and may be discharged therefrom by rotating a hinged outlet flap. The track is supported by a rod 11 and is constituted by two split tubes spaced apart and secured by distance straps 8<b>, Fig. 7. A counter 12<a> counts the number of missiles passing along the track.
Patent GB-982863-A (GB)
IPC: A01D41/12
Filed: 1963-04-26
Abstract: 982,863. Combine-harvesters. G. CLAAS. April 26, 1963 [July 12, 1962], No. 16547/63. Heading A1F. Relates to a combine harvester of the kind wherein the threshed grain is fed to a sorting device 18 and thence either to a grain tank or to a bagging station. According to the invention, the sorting device is arranged in the delivery duct leading to these two members and the duct branches beyond the sorting device, a flapvalve 38 is movable to close either branch 34, 35 at will. The sorting device comprises a rotating perforated cylinder 31 arranged within a housing 30 and having a relatively movable rotor 32 mounted within it. The valve 38 is hinged at the junction 39 of the two branches 34, 35, leading respectively to the bagging station and the grain-tank (Fig, 1, not shown). The position of the valve is controlled by a hook 40 and spring 43, the spring being selectively attachable to eyes 44, 45 on the two branches.
Patent GB-309852-A (GB)
Title: Process of producing ammonium sulphate by the treatment with gypsum of an ammoniacalsolution used for the scrubbing of gases
IPC: C01C1/244
Filed: 1928-06-07
Abstract: 309,852. Union Chimique Belge Soc. Anon. April 16, 1928, [Convention date]. Addition to 307,037 and 308,243. Purifier u:aste, revivefying. -In the processes described in the parent Specifications for removing acid impurities from fuel distillation gases, and for forming ammonium sulphate crystals, sufficient ammonia is added to the ammonium sulphate solution to separate substantially the whole of the substance, and an amount of water corresponding with that added with the calcium sulphate and that used in washing the calcium carbonate is removed from the circuit, so as to render unnecessary evaporation of the washing liquor. The mother liquor after separation of ammonium sulphate crystals by injecting ammonia from a pipe 23 into a column 22 is passed by a pipe 25 through a heat-exchanger 26 into a heated column 27, fitted with a reflux condenser 29 from which ammonia is returned to the column 22. A portion of the liquid from the base of the column 27 is drawn off into a boiler 35 and is heated with milk of lime to expel ammonia which is returned to the column, the residual liquid being withdrawn from the circuit. The remaining liquid from the column 27 is passed through a cooler 30 into a scrubbing column 2 which receives gas from a pipe 1 together with ammonia from a pipe 5 and a mixture of ammonia and carbon dioxide from a distilling column 10 by a pipe 37. The used washing liquor is treated with calcium sulphate in a vessel 7 and passed through a filter 8, the distilling column 10 and a cooler 40 and is returned without evaporation to the column 22.
Patent GB-318875-A (GB)
Title: Improvements in or relating to single chamber compressed air brakes
IPC: B60T15/30
Filed: 1928-06-08
Abstract: 318,875. Hildebrand, W. June 8, 1928. Fluid-pressure .-In single chamber compressed air brakes having a first control valve S' subject to train pipe and auxiliary reservoir pressure and a second control valve S<2> subject to brake cylinder, train, pipe and a constant pressure, both valves controlling brake application, the transfer chamber U is connected to the train pipe L by the first control valve when applying the brake, and absorbs a volume of air equivalent to that displaced by the piston K<1> of the valve. A minimum pressure valve M and a restricted bye-pass D connects the brake cylinder C with the pipe e, which has branches e<1>, e<2> leading to the control valves, through both of which the brake cylinder is supplied in braking. The branch e<2> has a restriction e<4>. The second control valve is connected above the piston K<2> by a pipe l to the train pipe L, fall of pressure in which allows the constant pressure in a chamber A to raise the pistons K<2>, K, closing the exhaust valve V<1> and opening the inlet valve V<2>. Brake cylinder pressure acting on the piston K returns the valves to top position. Exhaust takes place on increase of train pipe pressure through a bore in the piston K and an opening O. When brake cylinder pressure has increased sufficiently to raise the differential piston of the valve M the pipe e is closed and the supply to the brake cylinder takes place through the restricted pipe e<3> only.
Patent GB-363958-A (GB)
Title: An improved process for treating artificial silk
IPC: D01D10/04
Filed: 1931-06-09
Abstract: The process of the parent Specification is modified by unwinding the untwisted artificial silk from the unlaced cross wound skeins while still moist from the liquid treatments, and simultaneously twisting, drying being effected on the wound and twisted yarn.  The moist skeins are mounted on swifts and the yarn is wound directly from the skeins on to cop bobbins while being twisted with the aid of ring twisting frames.  After drying the yarn in the twisted condition it assumes a compact character and the usual dressing process prior to further working up to textiles may be dispensed with.  The bobbins on which the thread is wound are preferably made with elastic coverings of felt or rubber so as to yield to the shrinkage of the yarn which takes place on drying.
Patent GB-347517-A (GB)
Title: Improvements in and relating to the valves of internal combustion engines
IPC: F01M9/10
Filed: 1930-05-30
Abstract: 347,517. Stuffing-box substitutes. JUNKERS, H., 21, Kaiserplatz, Dessau, Anhalt, Germany. May 30, 1930, No. 16784. Convention date, June 17, 1929. [Class 122 (v).] To prevent leakage of fuel along the spindle of an internal-combustion engine suction valve 4, lubricating oil is introduced into a chamber 11 at a pressure higher than that of the charge. Oil passes from the lubricating oil system 21 through a nozzle 34 and pipe 13 into the chamber 11. A spring-loaded valve 25 open on one side through the pipe 15 to the charge pressure and on the other side to oil pressure, regulates the pressure in the chamber 11, the difference in pressures of oil and charge being equal to the pressure of the spring 25. In a modification the pipe 13 is connected to the outlet of the relief valve 33, the nozzle 34 being dispensed with.
Patent GB-903930-A (GB)
Title: Improvements in or relating to processes for the continuous production of combustible gases
IPC: C10K1/00
Filed: 1959-05-19
Abstract: In a continuous process for the production of a combustible gas, such as fuel gas, synthesis gas and hydrogen from carbonaceous materials, particularly liquid and gaseous hydrocarbons and coal, by reacting them with oxygen or oxygen and steam the hot raw gas is first cooled and then passed in turn through one or more beds, preferably fluidized, of particulate iron and/or manganese oxide maintained at a temperature between 250 DEG  and 700 DEG C., preferably between 400 DEG  and 600 DEG C., to effect removal of hydrogen sulphide and other sulphur-containing impurities and some conversion of carbon monoxide by reaction with the water vapour present in the gas to carbon dioxide and hydrogen, and through a scrubber where it is scrubbed with an absorbent liquid to remove carbon di-oxide, oxide particles and liquid absorbent being withdrawn from the bed or beds of oxide and the scrubber respectively, regenerated and returned thereto. Three fluidized beds of hot oxide particles arranged one above the other in a single vessel may be employed and steam or condensate may be fed into spaces between the lowest and middle bed and the middle and upper bed.  Oxide for regeneration is continuously withdrawn from the bed, or bottom bed and regenerated in a preferably fluidized regeneration zone maintained at a temperature between 400 DEG  and 800 DEG C. by contact with air or a mixture of air and hot combustion gases whereby sulphur di-oxide is liberated and the oxide regenerated.  The liquid absorbent for carbon di-oxide may be ethanolamine or an aqueous solution of potassium carbonate and regeneration of the used absorbent is effected by steam stripping in a column at a pressure somewhat lower than the pressure in the scrubber.  The absorbent being regenerated is withdrawn from a lower portion of the column and heated in a reboiler to provide the steam for stripping and the heated absorbent is fed from the reboiler into the base of the regeneration column to release steam before return to the scrubber.  Carbon di-oxide is recovered from the regeneration column.  The hot raw gas may be quenched by direct contact with water or cooled by passage through a waste-heat boiler and may be washed with hot water before entry into the bed or beds of oxide.  The gas leaving the bed or beds of hot oxide particles may be further treated to reduce its carbon monoxide content.  The gas is washed with hot water and passed into a converter containing beds of iron oxide maintained at between 400 DEG  and 550 DEG C. wherein most of the remaining carbon monoxide is converted.  Steam or condensate may be introduced into the converter.  The gas from the converter is then washed to remove carbon di-oxide.  Also the gas may be washed to remove carbon di-oxide before entering the converter and the absorbent liquid from both washings may be regenerated in a single regeneration column or each scrubber may be combined with a separate regeneration column.
Patent GB-165098-A (GB)
Title: Improvements in apparatus for separating or sorting fragmentary materials by electric conductivity
IPC: B07C5/36
Filed: 1921-06-20
Abstract: 165,098. Schweitzer, H. L. A. June 18, 1920, [Convention date]. Electric separators.-Relates to apparatus for separating fragmentary materials according to their electrical conductivity and comprises an electromagnet s operating a striker m, with or without a make-and-break device, the electromagnet being connected in a circuit adapted to be closed at the contact c by the. electricallyconducting fragments as they are fed one at a time, by the conveyer t. A fragment of low conductivity continues its movement in the direction of the arrow B whilst a conducting fragment closes the circuit thereby receiving a sudden blow or series of blows from the striker m and is thus projected in the direction of the arrow A. The Specification, as open to inspection under Sect. 91 (3) (a) comprises also an electromagnetically-controlled mechanical deflector as shown in Fig. 2 (Cancelled). In this case an electromagnet s is provided in a circuit connected to a semicircular guide h and a lever h. A rotating finger d pushes the fragments singly between the guide h and the lever b, thus displacing the lever. When a non-conducting particle is passing, a pivoted arm v under the influence of a spring r takes up the dotted position v' and the fragment falls as indicated by the arrow A. A conducting fragment, however, closes the circuit in passing, thus actuating an armature e, the bent end of which prevents movement of the arm v, and the fragment takes the course indicated by the arrow B. In the form shown in Fig. 3 (Cancelled), the electric circuit terminates in a mechanically reciprocated plunger p and a. plate k pivotally supported on a frame l pivoted at m. An electromagnetic device, adapted to be put out of action when the circuit is closed, normally locks the plate k to the frame l. A non-conducting fragment pushed by the plunger p deflects the plate k which carries with it the frame l and falls vertically. A conducting fragment, when pushed against the plate k by the plunger p, completes the circuit and therefore deflects the plate k only in which case it passes through the opening n and, in falling, is guided by the tongue g into a separate receptacle. Instead of employing electromagnetic devices, deflection of the conducting fragment may be effected by the forces set up in passing the fragments through a magnetic field, during which passage current is passed through the conducting fragments by contact devices or alternatively current may be induced in the conducting fragments by their motion relatively to the field. This subject-matter does not appear in the Specification as accepted.