baber/WOPTO huggingface dataset:
Patent GB-562116-A (GB)
Title: Improvements in or relating to wide angle lenses particularly for use in optical projection systems
IPC: G02B13/04
Filed: 1943-03-08
Abstract: 562,116. Optical systems. KODAK, Ltd. (Eastman Kodak Co.). March 8, 1943, No. 3754. [Class 97 (i)] A wide angle objective for optical projection consists of three simple air-spaced elements I, II, III, the element III on the long conjugate side being negative, the other elements being positive, and the spacing between elements I and II being greater than half the focal length F of the objective. The element III may have its more strongly curved surface towards element II and be spaced from it a distance between .1 F and F. The elements I, II may each be biconvex, preferably equiconvex. Data are set out for two examples of the optical system shown, including an optical compensator plate 14, for projecting an image on a screen 17 of a film in a gate 13; illumination is by a lamp 10 and condenser 12.
Patent GB-871947-A (GB)
Title: Improvements in and relating to dobbies
IPC: D03C1/26
Filed: 1958-02-05
Abstract: 871,947. Double-lift dobbies. STAUBLI, R., STAUBLI, H. H., and STAUBLI, O., [trading as STAUBLI & CO. GEB.]. Feb. 5, 1958 [Aug. 22, 1957], No. 3780/58. Class 142(2) In a double-lift open-shed dobby, during the idle stroke of a draw knife all the hooks 9 are lifted from the knife by a common member and those hooks required for engagement with the knife are subsequently allowed to fall. The hooks that are not to engage the knife remain raised being supported by needles 10 controlled by the pattern card. A knife 6 can be rotated by mechanism described in Specification 788,910 and a surface 15 lifts all the hooks clear of the knife. If a reading needle 16 engages a hole in the pattern card 17, a needle 11 is lowered and subsequently moved to the right by a presser rail 12 whereby a support needle 10 is moved from beneath a projection 24 on a hook 9 and the hook falls and engages the knife. The resiliency of the needles 10 returns them to their vertical position. The lower hooks 13 are similarly supported by needles 14. In another embodiment, the hooks are guided in a grid which is raised to lift all the hooks and a stop on the needles 11 engages one of the projections 24 to support a hook. Specification 871,653 also is referred to.
Patent GB-1034613-A (GB)
Title: Improvements in or relating to pyrazolone carboxylic esters
IPC: C07D231/50
Filed: 1965-01-28
Abstract: The invention comprises compounds of the formula <FORM:1034613/C2/1> where R1 is H or alkyl and R2 is alkyl but excluding compounds where R1 is H and R2 either methyl or ethyl and where R1 is methyl and R2 ethyl, and the preparation of all the above compounds by reacting an amino-antipyrine with an alkyl chlorocarbonate in an inert solvent, preferably in presence of an alkali metal carbonate.ALSO:Pharmaceutical compositions containing compounds of formula <FORM:1034613/A5-A6/1> where R1 is H or alkyl, and R2 is alkyl, together with pharmaceutically acceptable carriers, have antiphlogistic, analgesic, and antipyretic activity and may be administered orally or subcutaneously.
Patent GB-436057-A (GB)
Title: Improvements in pneumatic shock absorber
IPC: F16F9/02
Filed: 1935-02-06
Abstract: 436,057. Pneumatic shock-absorbers. NATIONAL PNEUMATIC CO., 420, Lexington Avenue, New York, U.S.A. Feb. 6, 1935, No. 3870. Convention date, June 16, 1934. [Class 108 (iii)] A pneumatic shock - absorber comprises a closed airtight cylinder 1 containing a movable piston 8, means entirely mounted upon and actuated by the movement of the piston being provided for enabling superatmospheric pressure conditions to be created and maintained in both ends of the cylinder. The piston-rod 9 communicates with the atmosphere through a passage 14 which leads into two chambers 16 in the piston containing non- return valves 17, 18 adapted to open towards the opposite faces of the piston. The cylinder ends A, B are also connected through a passage 27, Fig. 3, in the piston controlled by a centrally-bored, third valve 25 operating similarly to the valve 17, the passage having a restricted bore 28 at one end. When used on a vehicle the cylinder 1 is fixed by means of an arm 5 gripped between rubber &c. blocks 6 secured on a bolt 4 fixed to the cylinder. Normally, the air in the cylinderend A is at superatmospheric pressure, the valves 17, 25 being closed while the air in the end B is at least at atmospheric pressure. On upward movement of the piston the pressure rises in end A and falls in end B so that air is sucked into end B past the valve 18. On downward movement of the piston, due to the action of the compressed air in end A, the valve 18 closes and the pressure in end B consequently increases, the valve 25 opening should the pressure exceed that in end A.
Patent GB-215122-A (GB)
Title: Improvements in venting devices for use in connection with beer and wine casks and like containers
IPC: B65D51/16
Filed: 1923-02-09
Abstract: 215,122. Howett, E. Feb. 9, 1923. Vent pegs.-In a venting device in beer casks, wine casks &c. of the kind in which ingress and egress of vent air takes place through separate valves (1) apertured screw plugs h, Figs. 1 and 2, are provided to enable the tension of valve springs d to be a.djusted from the outside, the valves being operated either automatically or by hand through rods k; (2) valves of the gravity type are provided with gauzes or perforated plates r, Fig. 3, so positioned as to limit the movement of the balls m.
Patent GB-130662-A (GB)
Title: Treatment of Fibrous Substances.
Inventor: WARD ARTHUR
IPC: D06M11/71
Filed: 1918-03-06
Abstract: 130,662. Ward, A., and Henshilwood, A. B. March 6, 1918. Water solutions of chemical compounds for proofing.-Substances in the form of fibre or fabric, such as cotton for use in wrapping or enveloping the propelling-charge for a shell, are treated with a solution of boracic acid, ammonium borate, ammonium phosphate, or microcosmic salt to prevent smouldering of the refuse after burning. The fibrous substances, after soaking, are passed between squeezing-rollers and then dried.
Patent GB-725307-A (GB)
Title: Improved line fault welding device for communication cables
Inventor: HAYASHI KUNIZO KATSUMARU SHIGE
IPC: G01R31/08
Filed: 1953-02-11
Abstract: 725,307. Testing cable insulation. NIPPON DENSHIN DENWA KOSHA. Feb. 11, 1953, No. 3911/53. Class 37. A cable-testing device in response to a fault in insulation applies an increased voltage to cause the conductors to be welded together at the fault. As shown, after the operation of the mains switch KS1 to energize the heaters of rectifiers Val ... Va3 and starting button SP which energizes MS to connect up the transformer T2 supplying the anodes and operating winding W2, controlling contact ACB in series with a potential divider R1, R2, testing button DB is operated to energize relay TR12 for a time determined by a sluggish relay TD. TR12 applies to the cable conductors via relays TR3A, TR3B first the voltage between point N and tapping P and subsequently at tr-2, which closes later, the lower voltage of tapping B1 If the insulation breaks down, TR-3A applies the maximum voltage to the cable via its own winding, a current limiter VR and winding W1 which opens ACB. At a predetermined value of primary current in transformer T2, relay IOR releases MS to cut off the power supply. In a modified system, Fig. 2 (not shown) alternating current is applied to the cable.
Patent GB-607545-A (GB)
Title: Improved means for securing cutter-bits in mining machinery
IPC: E21C35/19
Filed: 1946-02-07
Abstract: 607,545. Mining-machines. CINCINNATI MINE MACHINERY CO. Feb. 7, 1946, No. 3933. Convention date, May 10, 1945. [Class 68 (i)] The cutter-carrying chain links of a mining- machine are provided with spaced lugs 6 between which is fitted a bit holder comprising a shank 8 and a head 9 with a socket receiving a diamond-section bit 14 which bears against a cross-pin 11; the head 9 bears against one lug 6 and an abutment piece 16 bears against the other, the piece 16 having a groove receiving the end of the bit 14 and also side ears 18 engaging recesses 13 in the head 9. Adjustment of a screw 7 causes rocking movement of the bit holder to lock the bit. The arrangement is reversible. Rectangular washers 20 may be inserted.to adjust the height of the bit. Specification 436,822 is referred to.
Patent GB-490589-A (GB)
Title: Improvements in and relating to switch handles
IPC: H01H3/10
Filed: 1938-02-08
Abstract: 490,589. Switch handles. BRITISH THOMSON-HOUSTON CO., Ltd. Feb. 8, 1938, No. 3938. Convention date, Feb. 11, 1937. [Class 38 (v)] [Also in Group XXV] A detachable rotary switch handle 1 of moulded insulating material, having one end pointed as a position indicator, is secured to a switch shaft 6 by a transverse movement. Secured in a two chambered recess 2 in the handle by a screw 4 is a metal plate 3 having a keyhole slot 5, a round portion of which allows the shaft end to enter, while the parallel sides engage a flattened portion 7 of the shaft which is secured in place by leaf springs 9 when the handle is moved downwards relative to the shaft.
Patent GB-486465-A (GB)
Title: Improvements relating to the electric heating of articles or materials in a tunnel kiln
IPC: F27D11/02
Filed: 1937-02-10
Abstract: 486,465. Electric tunnel kilns. THOMAS, C. W. Feb. 10, 1937, No. 3940. [Class 39 (iii)] A wheeled truck b moving on rails d is fitted with heating elements g fed through contacts j engaging conductors k arranged in sections connected to the mains m through adjustable resistances n. The heating is a maximum when the truck is at the centre of the kiln. The heating elements are arranged in grooves f in a refractory deck e of the truck.
Patent GB-1000573-A (GB)
Title: Valve operating means
IPC: F16K31/143
Filed: 1961-11-14
Abstract: 1,000,573. Valves; gearing converting rotary motion into reciprocating motion. CONSOLIDATED ELECTRODYNAMICS CORPORATION. Nov. 14, 1961 [Nov. 30, 1960], No. 40649/61. Headings F2Q and F2V. Valve operating means comprises a pair of threaded assemblies on either side of a valve stem 18, each threaded assembly comprising a rotatable member 39 and a non-rotatable member 57, a cross-member 56 in permanent engagement with a threaded member of each threaded assembly, the cross-member being adapted for engagement with the valve stem, and driving means, such as a hand wheel 48, to rotate the members 39. The member 56 carries a pair of rods 61 of half-round section rotatable against a spring load by finger levers 63 to a position in which their flat faces are vertical so that a sleeve 22 connecting the valve stem 18 to the piston-rod 10 of a pneumatic ram may be disengaged from the member 56 for power operation of the valve. Movement of the sleeve 22 upwardly into the cross-member automatically effects re-engagement. The members 39 are connected by worm drives 44 with the shaft 47 of the hand wheel and are adjustably connected to the cross-member 56 to permit their loads to be equalized. The hand wheel 48 may be replaced by a servomotor.
Patent GB-571742-A (GB)
Title: Improvements relating to the operation of electric fuses
IPC: H01H85/46
Filed: 1944-03-06
Abstract: 571,742. Protective cut-out arrangements. BRITISH THOMSON-HOUSTON CO., Ltd. WELLINGS, J. G., and WITHERS, B. March 6, 1944, No. 4128. [Class 38 (v)] Fuses designed to rupture currents of, say, <1>/10 th amp. or less, have means for injecting an increased current for blowing them, so enabling a more robust fuse to be used. An auxiliary fuse is normally used in parallel with, to prevent excessive heating of, the main fuse particularly when the latter is of the spring-loaded type. The primary winding 4 of a current transformer 5 is connected between the spring-loaded main fuse 3 and the high-voltage supply terminal 1. The secondary 7 is connected across the fuse 3, across which an auxiliary fuse 8 is connected in parallel. When a fault current flows, the fuse 8 melts and thus the fuse 3 receives the local current and also melts, the spring 6 ensuring a safe isolating gap. In Fig. 2, the auxiliary fuse 8 is connected in series with the main fuse 3 and in parallel with the primary winding 4, the secondary 7 being connected across the fuse 3 as before. As the auxiliary fuse 8 is not under mechanical stress its rating may approximate to the value of normal circuit current. Under normal conditions, the primary 4 is short-circuited by the fuse 8 and is therefore not subjected to prolonged electrical stresses. The Provisional Specification refers to Specification 567,347.
Patent GB-553596-A (GB)
Title: Inductance devices
IPC: H01F27/32
Filed: 1942-03-28
Abstract: 553,596. Inductances; transformer. STANDARD TELEPHONES & CABLES, Ltd. March 28, 1942, No. 4177. Convention date, Nov. 14, 1940. [Class 38 (ii)] Secondary resonances due to an unfavourable distribution of the interlayer capacity in a multilayer winding are avoided by so arranging the turns in relation to the insulation that the potential distribution due to inter-layer capacity coincides with that due to flux linkages. This may be accomplished by progressively increasing the thickness of the insulation 3 between layers, by using insulation of progressively decreasing dielectric constant, or, according to the Specification as open to inspection under Sec. 91, by progressively decreasing the number of turns per layer. The lastmentioned method does not appear in the Specification as accepted.
Patent GB-1156865-A (GB)
Title: Identification Circuit for PAL System Conversion of Tape.
Inventor: CARNT PETER SWIFT
IPC: H04N9/873
Filed: 1967-01-27
Abstract: 1,156,865. Colour television. RADIO CORPORATION OF AMERICA. 29 Jan., 1968 [27 Jan., 19671, No. 4210/67. Heading H4F. To adapt the NTSC type automatic time correction (ATC) circuit in a colour video tape recorder for recorded PAL type signals, the colour burst signals of which vary from lineto-line by 45 degrees from a reference phase, the ATC circuit, which under NTSC signal playback operation compares the separated 12 subcarrier burst component of the recorded colour video signal with a locally generated reference wave at subcarrier frequency in a phase detector 14, the resultant error signal being used to control a variable delay line 16, is also arranged to produce a further error signal which is used to synchronize the sense of the periodic phase shift 18 of the reference subcarrier with that of the subcarrier burst component of the recorded PAL signal. If the sense of the periodic phase shift of the reference subcarrier is incorrect, i.e. phase of the reference subcarrier is cyclically out-of-phase with the phase of the recorded subcarrier burst, the error signal includes a square wave of half horizontal line scan frequency which is filtered, amplified and clipped 22-28, and fed to a diode pump type divider or counter detector stage 30 which produces a reset pulse after approximately ten square wave pulses. The reset pulse is coupled to a half line frequency binary 20 which controls the phase shifter 18, binary 20 being triggered by a locally generated horizontal sync. signal. Detector 30 prevents accidental resetting of binary 20 by spurious signals of large amplitude, and is such that its counting number increases as the amplitude of the counter input signal decreases, i.e. the further the frequency of any spurious signal is away from half horizontal scan frequency and due to the selectivity of filter 22, the lower is the amplitude of the resultant signal and the higher the count number before the counter is fired and binary 20 is reset.
Patent GB-289767-A (GB)
Title: Improvements in automatic weighing scales
IPC: G01G1/00
Filed: 1928-02-10
Abstract: 289,767. Fairbanks & Co., E. & T., (Assignees of Hadley; H. A.). April 30, 1927, [Convention, date]. Pendulum-weight apparatus.-In a weighing scale, the load-counterbalancing means comprises a number of pendulum arms provided with segments whjch are connected by a tape pivotally attached thereto and carrying an indicator rack bar. The pendulums 14, 15 mounted on bearings 4 are attached to sector-shaped arms 6, 8 interconnected by a flexible tape 18. The ends of the tape have a loose pivotal connection with the arms 6, 8 upon studs 24, 25 and are pressed against the arms by springs 28. Fastened to the tape by screws 29 are two rack guides 30, 31 carrying a clevis 32 to which is pivoted, on a bolt 33, a, member 35 retaining the indicator rack bar 36. The rack bar may be adjusted vertically by a screw 37 and is maintained in engagement with the usual indicator pinion by an antifriction roller at the back. A vibration damper 44 is connected to the guide 31. The pendulums are connected to the scale levers by a flexible tape 11 and rod 13.
Patent GB-475183-A (GB)
Title: Improvements in or relating to electric discharge tubes
IPC: H01J19/00
Filed: 1936-02-12
Abstract: To improve thermal radiation and reduce secondary emission one or more of the components of an electric discharge tube, e.g. the electrodes, electrode supports or wall of the envelope, have a dull black surface consisting of particles of a metal, the melting point of which is higher than 1200 DEG  K., the dimensions of the component particles being of the order of 0,1 micron or less, preferably 0,01 micron.  Metals such as tungsten or molybdenum, melting above 2000 DEG  K., are preferably employed. Nickel and iron may be deposited by decomposition of their oxalates, and platinum by electrolysis. Tungsten and molybdenum may be vaporized in a gaseous atmosphere, such as argon, or in water vapour at 1 mm. pressure or more, preferably 20 mms.  The oxides, halides or oxyhalides of tungsten or molybdenum may be reduced by hydrogen at low temperature.  Cathodic disintegration may be employed.
Patent GB-403242-A (GB)
Title: Improvements in or relating to presses for dehydrating colloid material
IPC: B30B9/24
Filed: 1933-02-13
Abstract: 403,242. Presses for separating liquids from solids. ROGGEN, M. VAN, Sprimont, and ROBIN, L., 25a, Avenue Adolphe Buyl, Brussels, both in Belgium. Feb. 13, 1933, No. 4410. Convention date, Feb. 17, 1932. [Class 46.] A press for dehydrating peat and like colloid materials comprises two travelling endless members urged towards one another by resilient means, one of the members being supported transversely of the machine on deformable supports arranged side by side and subjected to the action of resilient devices distributed throughout their length, so that the endless member is deformable in a transverse as well as a longitudinal direction. The travelling members may consist of endless chain members 2, 5, Fig. 1, passing over sets of rollers 4, 7, interconnected so as to form endless chains 4a, 7a. The chain member 5 has a backing 6 and the member 2 is urged towards it by deformable rails or elastic strips 8, crosspieces 9, and springs 10 distributed throughout the length of the rails and adjusted so that the material is compressed progressively. The springs are individually adjustable by means of nuts 11 on rods 12 connected to the backing 6. One of the endless members may be a filter drum 6, Fig. 3, the other consisting of plate chains 2 wound around the drum 6 and pressed towards it by rails 8 acting on roller chains 4a. The drum shaft 6a passes freely through stationary side cheeks bearing upon adjustable stops on a frame, or made integral with the frame. The end walls of the drum have outlet apertures for the water and outside gutters to prevent it from flowing towards the shaft 6a. The water collects in channels on the stationary cheeks and escapes through a drainage outlet. The rails 8 are pressed inwards hydraulically by pistons in cylinders secured by rods to the stationary cheeks and connected by pipes to an accumulator. The diameters of the pistons gradually increase from the inlet of the press towards the outlet. A band 2a of indiarubber or the like passes between the chains 2 and the drum 6. It may be recessed or grooved to prepare the material treated for division into small blocks. The chain member 2 consists of adjacent chains hinged together for transverse tilting, or connected together by pivots fitting loosely in the chain plates. Indiarubber flaps or flanges are provided to prevent the material from escaping from between the travelling members.
Patent GB-1300971-A (GB)
Title: A method of making a silver catalyst for use in the production of ethylene oxide
IPC: C07D301/10
Filed: 1970-01-30
Abstract: 1300971 Ethylene oxide CHEMISCHE WERKE HULS AG 30 Jan 1970 [31 Jan 1969] 4549/70 Heading C2C [Also in Division B1] Ethylene oxide is produced by oxidizing ethylene with molecular oxygen over a supported silver catalyst which has been formed by mixing a porous carrier material with an aqueous suspension of silver oxide, subjecting to a reduced pressure then reducing the silver oxide to the metal (see Division B1). The oxidation process suitably takes place at 240 to 330 C. under pressure. Specific examples of the operation of the process are described.
Patent GB-493818-A (GB)
Title: Improvements in or relating to the production of concentrated sulphur dioxide
IPC: C01B17/60
Filed: 1938-02-14
Abstract: In the production of concentrated sulphur dioxide by its absorption in and subsequent recovery from organic bases, e.g. aromatic amines, such portions of the organic bases as are carried away with the waste gases from the absorption step are recovered by washing the gases with an organic liquid of low vapour pressure which forms a suitable solvent for the bases and is practically inert to the gases, the base thus absorbed being extracted from the organic liquid by bringing it into contact with sulphur dioxide in the presence of water, whereby the absorbed base dissolves in the form of sulphite in the aqueous portion of the liquid.  The organic liquid after separation from the aqueous phase may be returned for further use and the aqueous sulphite solution may be returned to the main absorption cycle either as such or after the sulphur dioxide has been expelled therefrom by heat.  The waste gases themselves may deposit sufficient water for the process during the treatment with the organic liquid but if not, the necessary water must be added before on during the action of the sulphur dioxide.  A suitable organic liquid is a partially refined paraffin oil boiling at 235-240 DEG  C. and preferably having a viscosity of not exceeding 2 DEG  Engler at 50 DEG  C.  The solution of organic base in the organic solvent is preferably emulsified with the water before the treatment with sulphur dioxide.  Both steps of the process are preferably carried out by exposing large surfaces of the downward flowing liquids to a countercurrent flow of the gases in packed or unpacked towers or towers provided with perforated or bell-shaped baffles.  Mechanical washers may also be employed. Specifications 339,926, [Class 1 (ii)], and 435,116 are referred to.
Patent GB-451951-A (GB)
Title: Improvements relating to water taps
IPC: F16K31/524
Filed: 1935-02-13
Abstract: 451,951. Manually-actuated valves. RUSSELL & CO., Ltd., J., and HUNTER, A. B., Alma Tube Works, Walsall. Feb. 13, 1935, Nos. 4617 and 9491. [Class 135] The closure member c of a water tap is drawn positively to its seat d and securely held in that position by the interengagement of curved surfaces on a head i, or r on the valve stem b and on a bifurcated or other suitable claw k or a rotary slotted cam l associated with a pivoted finger lever f, or n. Fig. 1 shows a form with a bifurcated claw k which engages the rear of the head i and straddles the stem b in the closed position of the valve. A cam portion e opens the valve and may be designed so that the valve remains in the open position. The rotary cam l, Fig. 5, has an arcuate slot o engaging the head r and a peripheral slot p to accommodate the valve stem. Accidental movement of the finger piece is prevented by two friction pieces w pressed apart by a spring into engagement with cheeks t between which the cam l is mounted. A hood portion u may act as a stop for the finger lever.