baber/WOPTO huggingface dataset:
Patent GB-673065-A (GB)
Title: Improvements in or relating to devices for positioning laterally a moving band
IPC: G03B1/42
Filed: 1948-06-23
Abstract: 673,065. Kinematograph apparatus. PAILLARD SOC. ANON. June 23, 1948 [July 29, 1947], No. 16848/48. Class 97 (i). [Also in Groups XVI and XXXVIII] A moving film or band is located laterally by passing through a passage between a stationary wall parallel to the direction of film movement and a member inclined thereto to form a passage decreasing in width with depth, the film being urged towards the bottom of the passage to keep its edges in contact with the walls of the passage and to keep one margin in contact with a support defining its position in depth in the passage. As applied, as shown, to kinematograph apparatus, film is fed off a sprocket in a loop the natural resilience of which presses it against the surfaces 11 in the same plane as the passage for the film behind the lens 5. Before passing to this passage, however, it passes through the space P between the side wall of a member 9 and the wall of a cone 10. The top of a member 12, beside the member 9, defines the height at which the width of the space P is equal to the nominal film width. A spring blade may be provided to hold the film in contact with this member. If the film width differs from this nominal value the film will not be quite level in the passage. The top of the member 12 is disposed in front of the surfaces 11. In a modification in which the surfaces 11 are dispensed with, the passage P is defined by two plane walls, one perpendicular to the plane of the Figure, the second inclined to the first. The member 12 extends the full length of the passage.
Patent GB-353609-A (GB)
Title: Improvements in furnaces
IPC: F23L1/02
Filed: 1930-05-31
Abstract: 353,609. Air supply to furnaces. BENNIS, A. W., of Bennis & Co., Little Hulton, Bolton. May 31,1930, Nos. 16876 and 29461. [Class 51 (i).] In a furnace in which air under pressure is supplied through a. conduit situated transversely across the front of the grate and through nozzles to troughs supporting firebars, a portion or the whole of the transverse conduit is displaceable relatively to the troughs to allow air to be supplied to the troughs under natural draught or for inspection of the nozzles. As shown in Figs. 1 and 3, the transverse conduit 4 is tapered and supplied with air from the damper-controlled trunk 7 and is also provided with nozzles 3 which enter the troughs 2 supporting the firebars 1, annular passages being provided around the nozzles for an induced supply of air. The front wall of the conduit 4 is curved and provided with apertures opposite to the nozzles 3 which are closed by a packed coverplate 9 when the furnace is worked under forced draught. The cover-plate is removed when natural draught is employed. A number of interconnected cover-plates may be employed to close the apertures in the front wall of the transverse conduit. In the modification shown in Figs. 5 and 6, the transverse conduit 17 carrying the nozzles 3 is displaced as a whole and for this purpose terminates in an elbow 18 mounted on a vertical trunk 7 and adapted to slide thereon, such sliding movement being limited by a, lug 19 engaging with a stop 21 on the trunk. A locking member 23 on the elbow 18 is adapted to be angularly displaced about its pivot 24 to return the pin 21 between the lug 19 and member 23. In further modifications the transverse conduit 17 is moved outwardly and then swung upwardly or downwardly about a hinge on the vertical trunk 7.
Patent GB-1160465-A (GB)
Title: Stabilization of Cathode-Ray Tube Deflection Circuits.
IPC: H04N3/223
Filed: 1967-04-12
Abstract: 1,160,465. E.H.T. generators. RADIO CORPORATION OF AMERICA. 12 April, 1967 [25 April, 1966], No. 16905/67. Heading H2F. [Also in Divisions G3 and H3] The deflection circuits 12, 13 of a television receiver are stabilized against supply voltage variations by automatically varying the gains of the respective output tubes 16, 19 in accordance with the variations of the respective retrace pulse amplitudes, the vertical deflection circuit additionally being provided with a stabilized voltage derived from a divider network including a temperature-dependent and a voltage-dependent resistor. In the horizontal deflection circuit 12 a pulse amplitude signal is fed from output transformer 23 through a capacitor 30 to a voltage dependent resistor 29 which acts as a variable efficiency rectifier and, in conjunction with capacitor 30, develops a negative bias voltage across a capacitor 35 which is dependent upon the average amplitude of the retrace pulse. This variable bias is applied to a control grid of the tube 16 through members 31, 32, 33, 22 to automatically vary the gain and so stabilize the image width. The arrangement also stabilizes the rectified high voltage applied to the tube 10 via members 23, 24 by virtue of the aforementioned control of the tube 16.
Patent GB-1339841-A (GB)
Title: Cationic starch ether flocculating agents
IPC: C02F1/52
Filed: 1971-05-25
Abstract: 1339841 Flocculating A E STALEY MFG CO 25 May 1971 [1 July 1970] 16933/71 Heading C1C [Also in Division C3] Clay is flocculated from aqueous suspension by treatment thereof with a gelatinized non-crosslinked cationic starch ether having a degree of substitution of at least 0À7, said starch ether being defined by the formula wherein in (1) St is starch, X- is an anion and R 1 , R 2  and R 3  are each an alkyl radical of up to 12 C atoms, cyclohexyl, phenyl or benzyl, and when any substituents are the same none has more than 6 C atoms, and when any substituent has more than 6 C atoms the other two substituents are alkyl radicals of up to 2 carbon atoms and in (2) wherein St is starch, X- is an anion and R 1  and R 2  form a heterocyclic ring including the N atom, the ring being morpholinyl, pyrrolidyl, or piperidyl, each heterocyclic ring optionally bearing one alkyl substituent of not more than two carbon atoms and R 3  is a C 1 -C 4  lower alkyl group.
Patent GB-403122-A (GB)
Title: Improvements in or relating to the chloridization of tin ores
IPC: C22B1/08
Filed: 1932-06-15
Abstract: In the extraction of tin from ores or concentrates containing additional metallic bases and free silica by chloridization in the presence of solid carbonaceous material, the quantity of the latter used is not substantially less than that theoretically necessary to reduce all the bases present, whereby fritting during chloridization is prevented.  In carrying out the invention the ore, carbonaceous material, and a calcium chloride solution may be ground together to the consistency of wet sand, and the mixture be dried to remove free water in a rotary furnace, whereby non-dusting agglomerates are formed.  Chloridization with distillation of tin as chloride is then effected in a muffle furnace.  The distillate is condensed to form a solution and the waste gases, comprising carbon monoxide, used for heating the muffle.  Tin may be recovered by electrolysis, the recovered chlorine being converted to calcium chloride with or without calcium hypochlorite for re-use, or to hydrochloric acid by passage together with a hydrogenous reducing gas over a contact agent such as firebrick heated to redness.  The residues from the chloridizing furnace are leached to recover excess calcium chloride. Specification 403,123 is referred to.  The Provisional Specification also refers to Specification 276,743, [Class 1 (iii), Oxides &c. Metallic].
Patent GB-572158-A (GB)
Title: Improvements in or relating to dental chairs
IPC: A61G15/10
Filed: 1943-10-16
Abstract: 572,158. Dental chair and spittoon. BELL, T. R. Oct. 16, 1943, No. 17045. [Classes 52 (ii) and 52 (iii)] A dental chair 1 is coupled to a spittoon 2 resting on the floor so that the spittoon is moved around with the chair, but does not partake of vertical or tilting movement of the chair. The spittoon may have casters or equivalent antifriction supports. The coupling comprises rods 16 and 19 and a slide 12 movable in a channel guide 11 on the chair. A split pin 20 loosely couples the rods 16 and 19, and 16 is coupled to a slide 12 by a cross pin 15 joining the rod 16 to a fork 13 rotatably mounted on the slide by a horizontal pin. In a modification the coupling link is adjustable in length to vary the distance of the spittoon from the chair.
Patent GB-1306195-A (GB)
IPC: B42D19/00
Filed: 1971-05-25
Abstract: 1306195 Autographic registers KETCHAM & McDOUGALL Inc 25 May 1971 [23 April 1971] 17056/71 Heading B6A An autographic register 10, Fig. 3, having selective hand and power operated paper web feed means comprises a split plastics casing, including an upper portion 12, Fig. 2, and a lower portion 22, which is provided with a pair of bifurcated stanchions 26 supporting a web roll 24 from which the paper web 14 is drawn off under the base of the lower portion 22 into a tortuous paper web tensioning channel 13 and advanced over the writing surface 15 to feed means formed by a pair of rubber coated feed rollers 50, Fig. 3, disposed below the writing surface 15 and passing through recesses therein to co-operate with a downwardly, resiliently biased presser bar 18. The paper web 14 may be fed by power on depression of a bar 17 which energizes a motor 52, Fig. 3, driving the rollers 50 through a gear train 58 and a spring clutch 56, which becomes disengaged when a hand knob 16 is operated to induce hand feed. Further hand feed is possible by raising the bar 18, provided with paper severing edge 19, against the bias of spring 38 and pulling the leading edge of the paper web 14 which is disengaged from the rollers 50.
Patent GB-876905-A (GB)
Title: Spectro-photometers
Inventor: FISHTER GEORGES EMILE
IPC: G01J3/08
Filed: 1959-05-20
Abstract: 876,905. Photo-electric spectro-photometers. HELGER & WATTS Ltd. May 19, 1960 [May 20, 1959], No. 17211/59. Class 40(3) [Also in Group XX] A spectro-photometer comprises a rotatable shutter 1 having an equal number of transmitting and reflecting sectors 12, 11 whereby a beam of light directed towards the shutter is alternately transmitted and reflected, the portion of light transmitted through the shutter forming one beam which directed along a predetermined path by a reflecting system, such as mirrors 2 and 3 and thence through a sample 8 and finally to the shutter where it is reflected towards a light detector, and the portion of light which is originally reflected by the shutter forming a second beam which is directed by the same reflecting system through a reference substance 9 and along a path of similar optical length to the beam originally transmitted by the shutter and is finally transmitted by the shutter towards the light detector. Several alternative arrangements of reflecting systems are described.
Patent GB-1332244-A (GB)
Title: Oscillator for a cyclotron
IPC: H03B5/18
Filed: 1971-05-26
Abstract: 1332244 Valve oscillator circuits PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 26 May 1971 [29 May 1970] 17237/71 Heading H3F The invention comprises an oscillator for a cyclotron comprising first and second acceleration electrodes 100, 200 respectively, contained within an envelope 2 and first and second wave tubes 104, 204 respectively, each having an inner conductor 101, 201 and an outer conductor 102, 202, the inner conductors each being connected to a different one of the acceleration electrodes and the outer conductors each being connected to the envelope, each inner conductor being short-circuited to the outer conductor at a position away from its position of connection to the corresponding acceleration electrode. The oscillator comprises first and second thermionic tubes 110, 210 respectively each of which is connected as an oscillator having an output which is coupled to a position on the inner conductor of a different wave tube via a coupling impedance, i.e. capacitors 124, 224, which position lies between the aforesaid positions, an impedance, i.e. series connected capacitors 114, 214 which is predominantly reactive at the operating frequency of the oscillator being connected between the cathodes of the two tubes, and having a reactance such as to constrain the oscillator to oscillate in operation in such a manner that it will drive the acceleration electrodes either in the push-pull mode while excluding the parallel mode or in the parallel mode while excluding the push-pull mode. In the embodiment each of the oscillator tubes has an inductor 112, 212 respectively in one filament lead, of tubular form with the other filament lead 115, 215 respectively running through its centre; these inductors are tuned by capacitors 113, 213 respectively and oscillation is produced by feedback from the anodes over capacitors 124, 224 respectively.
Patent GB-243272-A (GB)
Title: Improvements in and relating to a combination disc wheel
IPC: B60B3/12
Filed: 1925-07-06
Abstract: 243,272. Nelson. E. A. July 6, 1925. Suspension-spoke wheels. -A wheel comprises a conical disc 14 demountably secured by studs 15 and nuts 19 to a flange 11. on the hub, and a series of wire spokes 27 carried on a hub cap 22, both the disc and spokes supporting the wheel rim. The hub cap 22 has a flange 21 formed with an inturned edge which fits over the edge of a boss 17 on the disc, and each of the spokes is anchored by nuts 28 fitting in depressions 29 in the rim 26 and hub cap 22.
Patent GB-176722-A (GB)
Title: Improvements in machines for writing or embossing braille characters
IPC: B41J3/32
Filed: 1921-06-24
Abstract: 176,722. National Institute for the Blind, Fraser, I., and Howlett, A. E. June 24, 1921. Type - bar machines for braille type.-Relates to machines of the kind comprising six key-operated punches co-operating with an anvil, and a carriage for supporting the paper. The punches 23 pass through a guide 24 and are secured to plates 25 each having a slot 26 engaging a guide-screw 27, a depending lug 28 engaging one of the key-levers 29, and a pin 29a to which is connected a returning-spring 30. The plates 25 are arranged in two sets of three, each set engaging a common guide-screw. The key-levers are pivoted on a spindle 31 and guided by a comb 30<a>. An anvil 15 formed with pits 45 is arranged above the punches. Letter-spacing mechanism; space-key actions; folding machines.-A universal bar 33, engaging the key-levers 29 and a space-bar lever 42, is provided with an arm 36 carrying a fast dog 38 and a loose, pivoted dog 39 co-operating with a rack 19 on the paper-carriage 6, which is connected to a spring drum..The loose dog normally engages the rack, and on release is moved by a spring. To permit of carriage-return, the loose dog is provided with a back stop consisting of a spring. The front part 43 of the space-bar is connected to the space-bar lever by a pivot 44 and can be turned upwards to reduce the size of the machine. A returning-spring 43<a> is connected to the space-bar lever. The key-levers normally engage a cushion 32. Paper-carriages; feed-roller detents. - The paper-carriage 6, Fig. 2, consists of side plates connected by rods or tubes 12, 13 which pass through a stationary tube 14 and the anvil-arm 15 respectively. The rod 12 is provided with lugs 16 which are secured to the side plates by screws 17, the tube 14 being formed with longitudinal slots for the passage of the lugs. The carriage is provided with feed-rollers 4, 5, the roller 4 having a slot 7 for receiving the end of the sheet, and being provided with a knob having recesses for engaging a spring-pin or ball. Carriage scales.-A scale 47, Fig. 2, having braille markings 48 is secured to the paper-carriage 6 and passes beneath a pointer 46 on the anvil arm 15.
Patent GB-738981-A (GB)
Title: Improved process of manufacturing precision casting moulds for metals
IPC: B22C1/18
Filed: 1952-07-09
Abstract: 738,981. Moulding processes and machines. REGIE NATIONALE DES USINES RENAULT. July 9, 1952 [Aug. 29, 1951], No. 17346/52. Class 83 (1). Mould materials.-In making a mould for precision casting by investing a wax pattern, the sand is bonded by the reaction product of a building cement with a dilute solution of alkaline silicate. The sand may comprise silica, fireclay or corundum, the cement Portland or aluminous, and the silicate that of sodium. If the flask is filled with dry material, subsequently dampened as in Specification 650,466 with the solution; 100 parts dry material may be mixed with 1.6 parts of Portland or 3 parts of fused aluminous cement, or 3 parts of a mixture of the two in 1 to 3 proportion. The fluid may comprise a dilute solution of sodium silicate. 30‹ to 40‹ B6, 1 part by volume to 4 parts of water. When casting high melting point metals, e.g. Ni, Cr, Fe alloys, more refractory alumino-calcic or iron-free calcic silico-aluminous cements may be used. Sawdust, graphite, wood charcoal &c. may be added to increase porosity &c. In an example, a wax pattern 1 is welded to a wax base 3 and surrounded by a perforated flask 4 in a container 6, the flask being lined at 5 with filtering-material such as filter paper, and the whole is placed on a vibratory table 9. A mixture 51 of 2 parts of sawdust, 3 of fused aluminous cement and 95 of white silicious sand is poured in slowly during vibration, the table 9 being preferably inclined and rotated slowly about its axis. When the flask is full it is covered with a sheet of filter paper and a lead weight 11, and a 20 per cent solution of sodium silicate is poured into the container 6, the vibrations continuing. When the top of the sand is wet the vibrations are stopped and the container 6 is emptied by a tap 8. The flask 4 and mould are then allowed to drain and set for 12 hours, and the mould is stoved to dry it and remove the wax, and is finally heated to a high temperature ready to receive the casting metal.
Patent GB-1220872-A (GB)
Title: Improvements in carriers for looped cables in mining installations
Inventor: HUBBARD TERENCE
IPC: E21C35/04
Filed: 1968-01-26
Abstract: 1,220,872. Taking up slack in cables. PERARD ENG. Ltd. 17 Jan., 1969 [26 Jan., 1968; 10 April, 1968], Nos. 4101/68 and 17351/68. Heading B8B. [Also in Division H2] A carrier for co-extending looped power cable and fluid hose supplying a mining machine as it transverses a mineral face comprises a support portion 1 attachable to the face conveyer spill plate, a carrier portion 2 secured at 15 to the support 1 and a pivotally mounted roller 4 biased into a closed position, the two said portions and the roller enclosing an area sufficient to accommodate passage of the looped cables therethrough. A pivoted flap 16 above the roller 4 is lifted by the machine operator or by a wedge on the machine as it passes thereby, to permit the trailing cables to deflect the roller 4 downwardly against a spring 5, and enter the carrier. A further carrier 7 for static cables is mounted on the carrier portion 2 and these static cables extending between the carriers form with the spill plate, side walls to prevent the looped cables extending laterally from their path between the carriers. With one end of the looped cables secured mid-way along the face and the other end attached to the machine, the rollers 4 of adjacent carriers are progressively depressed by the cables to accept a single layer of cable as the machine moves from the mid-point to the end of the face, and once again depressed to receive a second layer of cables, forming a loop, as the machine moves back towards the mid-point. In the embodiment of Fig. 4 (not shown), an extension of the roller spindle engages the flap as the roller is depressed, to close the flap. In the embodiment of Fig. 5 (not shown), the carrier assembly is of reduced depth and includes a spring-biased vertical telescopic section supporting the roller and flap, whereby the section may expand as the loop of the cables passes. In the embodiment of Fig. 6 (not shown) the flap is dispensed with and the roller is pivotable about a vertical axis to receive the looped cable, the roller being displaced vertically upwards by the passing loop, in which displaced position the roller is prevented from pivoting.
Patent GB-319051-A (GB)
Title: Improvements in or relating to dials or the like for electrical condensers or other electrical instruments
IPC: H03J1/10
Filed: 1928-06-15
Abstract: 319,051. Burton, C. F., and Burton, H. June 15, 1928. Wireless tuning-apparatus, adjustment and indicating devices for.-Control means for electric condensers comprise an operating-knob and substantially flat graduated dial, an arcuate detachable and unenclosed logging strip adjacent and parallel with the dial graduations and a stationary index co-operating with the dial and strip. In one arrangement, Fig. 1, coarse and fine adjustment knobs 2, 7 rotate a graduated dial 5 beneath a stationary cover 1 on which the logging strip 14 is detachably mounted under projections 13. The logging strip is mounted in a recess 10 bounded by a rib 11. The knob 2 is provided with an index projection 3 and the transparent covering 8 has a hair-line index 9. In modifications, the logging strip can be mounted on the bevelled edge of the dial and may be secured by L-shaped pins.
Patent GB-1508347-A (GB)
Title: Oven for heating foodstuffs
IPC: A21B3/02
Filed: 1975-04-28
Abstract: 1508347 Oven with interconnected door and rack support TIPE REVENT AB 28 April 1975 [6 May 1974] 17455/75 Heading A2A An oven of the type which comprises a support in its roof from which a rack may be supported for rotation about a vertical axis, has a door which swings about a vertical axis and which is coupled to the support so that on opening the door it (the door) is lifted and the support is lowered, for ease of fitting the rack, and on closing the door it drops again, causing the rack and support to be raised from the floor.
Patent GB-636112-A (GB)
Title: Adjusting mechanism for drawing tables
IPC: A47B27/18
Filed: 1946-06-11
Abstract: 636,112. Drawing tables. VERCAUTEREN, M. June 11, 1946, No. 17468. [Class 52 (iii)] An adjustable drawing table comprises a fixed base 1 and a table top 2 which is moved between horizontal and vertical planes by a lever mechanism and which may be set in any desired position by a rack and pin mechanism. To each side of the table 2, levers 4 are pivoted at 5 and rotate about the shaft 3 on the base 1. One such lever 4 has a 90 degrees toothed sector plate 6 fixed to it on the other side of the shaft 3 and this sector plate is engaged by a pin 8 on an arm 9 pivoted at 10 and connected to a pedal 14 by a rod 11 and a lever 12. A return spring 15 is provided. This sector plate 6 allows the table to swing about the axis 3 and the ratchet enables it to be fixed. The axis 3 carries levers 16 carrying ratchet plates 21 at 90 degrees to the line of said levers which are operated by a similar pedal mechanism. Links 17 are pivoted to the table 2 at 18, and to the levers 16 at 19 and are joined together by a counterbalance 20.
Patent GB-544751-A (GB)
Title: Improvements in hand operated tools for turning screws or nuts or for boring
IPC: B25B13/06
Filed: 1940-12-10
Abstract: 544,751. Spanner &c. handles. PENNANT MANUFACTURING CO., Ltd., and GREW, C. Dec. 10, 1940, No. 17515. [Classes 61 (i) and 61 (iii)] The tommy bar 12 of a wrench, screwdriver, auger &c. 10 is slidable through the head 11 and may be folded down parallel with the stem of the tool about end trunnions 13 adapted to engage grooves 16 extending partway through the head. In the modification, Fig. 4, the tommy bar 21 is hinged at 23 to a plug 22. To prevent removal the tommy bar is formed with a flattened screwdriver end 14. In another construction, Fig 5, the tommy bar 26 is of tubular construction and slides on a transverse portion 25, at the upper end of the tool stem 10 and has a short hinged portion 29 at one end.