baber/WOPTO huggingface dataset:
Patent GB-353939-A (GB)
Title: Improvements in the heating of baking ovens
IPC: A21B1/40
Filed: 1930-04-28
Abstract: 353,939. Bakers' ovens. OTTO, W., 136, Potsdamerstrasse, Berlin. April 28, 1930, No. 12988. Convention date, April 29, 1929. [Class 51 (ii).] A baker's oven is heated by superposed communicating roof flues c, e, the lower of which is connected to exhaust. The partition d between the flues is made of heat-conducting material, so that by transfer of heat through it, the temperature along the length of the flue e may be maintained substantially constant. Both sets of flues may be formed from corrugated sheet metal as shown in Fig. 2, or the upper set may be constructed from refractory material. As shown, the upper flues are fired from one end by gas burners b extending along an air flue a, but in a modification the upper flues are fired from both ends, the connections between the flues being at the middle of the oven, and exhaust passages being provided at both sides. Where floor heating flues are provided these may be arranged similarly to the roof flues. Loss of heat upwards from the flues c is minimized by a layer i of insulating material.
Patent GB-1244938-A (GB)
Title: Improvements in and relating to lined pipes and vessels
Inventor: WILLIAMS DEREK BULE
IPC: F16L23/12
Filed: 1969-03-12
Abstract: 1,244,938. Pipes; pipe couplings. STEEL CO. OF WALES Ltd. 4 June, 1970 [12 March, 1969], No. 12989/69. Headings F2G and F2P. A tube comprises a metal casing 1 with an external flange 2 at one open end, the other end being open or closed, protruding beyond the casing end, and a metal lining 9 similarly protruding, the flange and lining being welded or brazed together at 10. The flange 2 is previously welded to the casing 1 at 6 and 5. The lining 9 is expanded by a mandrel to grip the inside of the casing 1 prior to welding. The flange 2, weld 10 and lining end are ground flat. The flange 2 is of mild steel, the easing 1 is of cold drawn bright steel, and the lining 9 is of copper. The weld 10 is of copper or of a copper alloy. Two such flanged ends are bolted together with an interposed PTFE sealing ring exposing only the lining 9 to the interor of the tubes.
Patent GB-712791-A (GB)
Title: Improvements relating to cam-operated electric switches
IPC: H01H19/63
Filed: 1952-05-22
Abstract: 712,791. Mechanical switches. BUSCH-JAEGER LUDENSCHEIDER METALLWERKE AKT.-GES. May 22, 1952 [May 23, 1951], No. 13041/52. Class 38(5) A cam-operated switch has a movable contact member 3 guided in a groove 2 in the switch base, the groove having enlargements 4 for compression springs 5. The member 3 is operated by a cam disc 9 acting on the projection 8 so 'as to move parallel to the shaft-axis. The lateral dimension of the member is small so that several can be arranged side-by-side in a narrow space, Fig. 2. The member 3, contacts 6, spring guides 7 and projection 8 are formed all in one piece.
Patent GB-861976-A (GB)
Title: Improvements in or relating to ball and socket joints
Inventor: PARKER ROBERT WILLIAM
IPC: F16C11/06
Filed: 1958-04-24
Abstract: 861,976. Ball-and-socket joints. ENGINEERING PRODUCTIONS (CLEVEDON) Ltd. Jan. 29, 1959 [April 24, 1958], No. 13075/58. Class 65(2). The ball 3 is seated in an open ended housing 1 by means of a two-part insert 8, 9 made of resilient synthetic plastic material e.g. nylon, the part 8 remote from the ball stud 4 being in the shape of a cup having an internal radius greater than that of the ball and being held deformed, within its elastic limit, in close seating relationship with the ball by a surrounding integral skirt 8a held in the housing under axial pressure by retaining means at the end of the housing remote from the stud. The retaining means may comprise a plate 10 and circlip 11, as shown, or the plate 10 may be omitted and the skirt 8a make direct contact with the circlip. Alternatively the skirt may be made self-retaining by means of an outwardly lipped rim which engages in an inwardly opening annular groove at the mouth of the housing. The parts 8, 9 are keyed together at their adjacent edges and at least one part is keyed to the housing, e.g. by means of projections 9a. A dust cover 13 is provided.
Patent GB-873252-A (GB)
Title: Esterified epoxy resins
IPC: C08G59/62
Filed: 1958-04-25
Abstract: Esterified epoxy resins are prepared in two stages: (i) by reacting (a) one or more monocarboxylic aliphatic acids, (b) a polyglycidyl ether of a polyhydric phenol, the ether having a 1,2-epoxy equivalency greater than 1, and (c) a dihydric phenol at elevated temperatures to obtain a polyhydric alcohol free of terminal 1, 2-epoxy groups, and (ii) reacting the polyhydric alcohol with one or more monocarboxylic aliphatic acids at elevated temperatures.  In stage (i) compounds specified are (a) linseed, soyabean, castor and dehydrated castor oil acids, (b) bis-phenol A-epichlorohydrin epoxy resins and (c) bisphenol A, hydroquinone and resorcinol.  There may be added in stage (i), Ca, Li or Na naphthenates or octoates as catalysts, xylene as a solvent and phosphoric acid as a colour improver.  In stage (ii) the polyhydric alcohol may be partially or completely esterified: acids specified are linseed, soyabean and dehydrated castor oil acids.  The final esters are soluble in xylene and mineral spirits: if the esters are derived from drying oil acids, driers e.g. Co naphthate may be added, and if not, the esters may be used as plasticizers for urea- and melamine-formaldehyde resins.ALSO:The invention comprises polymeric polyhydric alcohols free of terminal 1,2-epoxy groups and having the general formula: <FORM:0873252/IV (b)/1> where R is a monocarboxylic aliphatic acid residue, R1 and R2 are alkyl radicals of 1-4 C and y is 4 to 51. They are prepared by reacting (a) one or more monocarboxylic aliphatic acids, (b) a polyglycidyl ether of a polyhydric phenol, the ether having a 1,2-epoxy equivalency greater than 1, and (c) a d?hydric phenol at elevated temperatures.  In the examples there are reacted in the presence of xylene and Ca naphthenate, (a) linseed oil, dehydrated castor oil or soya bean acids, (b) bis-phenol A/epichlorohydrin epoxy resins and (c) 2,2-di(4-hydroxyphenyl) propane to provide esters of the above formula where y is 7, 15, 19 or 32.  These diesters are then reacted with further quantities of the acids to partially or completely esterify the remaining hydroxyl groups. It is stated in the Specification that Li or Na naphthenate or Ca, Li or Na oleate may be used instead of Ca naphthenate, and that castor oil acids may be used.
Patent GB-827019-A (GB)
Title: Flame detecting apparatus
IPC: G08B17/12
Filed: 1957-04-25
Abstract: 827,019. Radiation detectors. SPECIALTIES DEVELOPMENT CORPORATION. April 25, 1957 [June 15, 1956], No. 13178/57. Class 40 (3). A radiation detector discriminates between. the random variation of frequency in the radiation of a flame and the regular frequency of other sources of radiation, and gives an indication when such random frequency signals are detected. Radiation of a flame 1 falls upon a detector 2 the output of which is fed to an amplifier limiter 3 which produces a signal, Fig. 3, of constant amplitude having a frequency modulated in accordance with the fluctuation of the flame. The output of the amplifier limiter 3 is applied to an F.M. discriminator to produce an amplitude-modulated waveform, Fig. 4a, which is applied to a fullwave amplitude modulation detector 4B, the output of which, shown in Fig. 4b, comprises a waveform having a ripple voltage which disappears when the frequency of the input signal to the discriminator 4 changes so as to cause the amplitude of the output of the discriminator to decrease. The output of the detector 4B is fed to a negative level generator 5, the output of which closely approaches zero when the ripple voltage disappears, thereby producing the waveform of Fig. 5. The negative part of the output of the F.M. discriminator 4 controls the formation of positive pulses of constant amplitude, Fig. 6, which are combined with the output of the negative level generator 5 in a summing network 7, producing the waveform of Fig. 7 which triggers a thyratron 8 to operate an alarm 9 when the summed voltages have a positive value. Specification 781,740 is referred to.
Patent GB-117341-A (GB)
Title: Improvements in and relating to Antifriction Ball Bearings.
IPC: F16C33/36
Filed: 1917-09-14
Abstract: 117,341. Marks, E. C. R., (Nordiska Kullager Aktiebolaget). Sept. 14, 1917. Roller bearings.-In a roller bearing for radial or axial loads, each roller 3 has the form of an ellipsoid with both ends cut off. The rollers are inserted edgeways into the bearing, and are tilted into their working positions under a pressure which is less than the limit of elastic resistance of the race rings 1, 2.
Patent GB-351157-A (GB)
Title: Improvements in and relating to putlogs, beams and the like for building purposes
IPC: E04G7/30
Filed: 1930-04-29
Abstract: 351,157. Scaffolding. McLEOD, A. S. and STEEL SCAFFOLDING CO., Ltd., 80, Regent Street, London. April 29, 1930, No. 13207. [Class 20 (ii).] A scaffolding putlog is formed with one or more spring-pressed gripping portions to engage the members on which it rests. The putlog 1 may be formed tubular or solid with a slot along one face and a shaped body 4 may slide along it under the action of a spring 11, a guiding rod 9 and adjusting cap 10 being also provided in the putlog. The other end of the putlog may be fixed to a wall or by means of an adjustable cramp to another member or may be provided with a fixed or another adjustable body 12, also under spring action and a common spring may act between the bodies to press them outwardly against the horizontal supports on which the putlog rests. The rod or tube may be telescopic for adjustment of length and the body 4 with its guiding rod, spring and cap may be adjustable along the rod or tube.
Patent GB-1177364-A (GB)
Title: Magnetohydrodynamic Generator Duct for Reducing the Disadvantages of the Hall Effect
Inventor: RICATEAU PIERRE
IPC: H02K44/12
Filed: 1967-03-22
Abstract: 1,177,364. Generators operating by electromagnetic interaction with fluids. COMMISSARIAT A L'ENERGIE ATOMIQUE. 22 March, 1967 [5 April, 1966], No. 13347/67. Heading H2A. The cross-section of an MHD generator or accelerator duct has the electrode surfaces defining an angle of at least 30 degrees with the direction of the magnetic field in order to reduce the Hall effect. In the duct of generally hexagonal cross-section the walls 8 are of insulating material and the electrodes are disposed on side walls 10, 12 which define angles of 30 degrees with the magnetic field direction OZ. The joint between the electrodes is either made re-entrant, as shown, or a sharp corner is provided. If the duct shape is generally square the internal surface of the electrode wall may be of saw-tooth shape. A segmented construction of electrode may be used or the electrodes may be formed of closed annuli lying in the equipotential planes, Figs. 5 and 7 (not shown).
Patent GB-578366-A (GB)
Title: Improvements in or relating to periscopic rangefinders
IPC: G01C3/12
Filed: 1939-05-04
Abstract: 578,366. Range-finders. COOKE, TROUGHTON, & SIMMS, Ltd., and TAYLOR, E. W. May 4, 1939, No. 13387. [Class 97 (i)] A periscopic coincidencetype range-finder having end prisms rotatable about the base to elevate or depress the range plane, and also having a fixed eyepiece and an erecting prism rotatable about the optical axis of the periscope to maintain image erection, isadjustable in azimuth without movement of the eyepiece, the erecting prism being also. rotated during such movement to maintain image erection. The Figures show a rangefinder having end prisms 2 rotatable with end casings 1, and an'optical system producing a primary image 26, all as described in Specification 577,066. It is provided with a periscopic system including a rotating erecting prism 13 to produce an image 27 in a fixed eyepiece 16, as described in Specification 577,814. The casings 1 are carried by a tube 22 rotatable in a fixed casing 3, and the tube is connected by gearing to a member 17 carrying the prism 13. The gearing comprises a toothed wheel 23 on the tube, an intermediate gear 24, a gear 25 on the spindle of a bevel pinion 21 meshing with teeth on a rotatable sleeve carrying teeth 20, a bevel pinion 18 on a spindle secured to the member 17, and a fixed toothed member 19. The gearing causes the member 17 to rotate at half the speed of the tube 22. Rotation of the range-finder in azimuth produces an equal rotation of the sleeve carrying the teeth 20, owing to the locking action of the gearing above it, and the member 17- rotates at half the speed of the azimuth movement. Gearing modified by the omission of the gear 24 is described in connection with another instrument described in Specification 577,814.
Patent GB-109655-A (GB)
Title: An Improved Appliance for Delivering Measured Quantities of Semi Liquid Materials such as Soap.
Inventor: COWIN JAMES ARTHUR
IPC: A47K5/12
Filed: 1916-09-21
Abstract: 109,655. Cowin, J. A. Sept. 21, 1916. Piston apparatus for discharging receptacles.- Apparatus for delivering definite quantities of semi-liquid soap &c. comprises a container A from which the soap is expressed by a spring-pressed piston B into a smaller vessel F. The soap is forced from the vessel F by a piston H which is pressed down by hand and is returned by a spring. The delivery aperture of the vessel F is normally closed by a lever I pivoted on the vessel F and connected at the end by a rod J to the pistonrod. A stem C on the piston B passes through the cover of the vessel A and indicates the amount of soap in the vessel.
Patent GB-621626-A (GB)
Title: Improvements in or relating to protective electric switches
IPC: H01H73/30
Filed: 1946-05-06
Abstract: 621,626. Automatic circuit - breakers. IGRANIC ELECTRIC CO., Ltd. May 6, 1946, No. 13680. Convention date, May 5, 1945. [Class 38(v)] A compact push-button controller for a polyphase motor comprises " Start" and " Stop " switch units 1, 2 mounted together with three overload protection units 3 each arranged to trip open the "Stop" switch and thereby de-energize a main contactor. When the " Start " button 11 is pressed it short-circuits a current-limiting resistance in the contactor circuit, which includes contacts 30, 32, 31 of the "Stop" switch, Fig. 15 (not shown). The contact 32 is mounted on a member 33, which is pivoted to the stem 34 of the " Stop " button 12 and may be forced sideways, Fig. 11, to opencircuit the contacts 30, 31 by a cam surface 53 on a tripping bar 20 engaging a projection 38. As the contact 32 leaves the contacts 30, 31 it is snapped upwards by a spring 35 until the button 12 assumes the dotted line position, Fig. 6. Springs 61 acting on levers 60 in each unit 3 tend to rotate the bar 20 on trunions 21 to trip the " Stop " switch, but each lever 60 is normally latched by a pawl extension 73 engaging a ratchet 72 which is held by fusible solder in an element 71. A heating coil 77 connected in one phase of the contactorcontrolled circuit surrounds the element 71 and is stepped at one end to afford adjustment by its reversal. Further adjustment of the coil position may be effected by changing its connection on stepped terminal plates 80. After tripping, depression of the button 12 re-sets the bar 20 and lever 60 by means of a projection 45 which engages and rotates the bar 20; the contact 32 re-engaging the contacts 30, 31 when the button 12 is released, provided the elements 77 have cooled sufficiently.
Patent GB-107193-A (GB)
Title: Improvements in or relating to Dynamo Electric Machines.
Inventor: LATOUR MARIUS
IPC: H02K19/24
Filed: 1916-09-27
Abstract: 107,193. Latour, M. Sept. 7, 1915, [Convention date]. Inductor-alternators.-In a high frequency alternator having a rotating homopolar field structure such as the Mordey inductor alternator, the ratio between the number of polar projections on the rotor and stator is such that, if 2 m be the number of recesses on the stator, the number of polar projections on the rotor is equal to (2 n + 1) m. In the construction shown in Fig. 4 the ratio is 4 to 6. The rotor may consist of a solid core of good conducting material and laminated polar projections.
Patent GB-1267338-A (GB)
Title: Viewer-projector-copier apparatus for microforms
Inventor: FRERSON RAYMOND
IPC: G03B21/11
Filed: 1970-03-23
Abstract: 1,267,338. Microfilm or microficke projection-copiers. ELECTRICITE DE FRANCE. March 23, 1970 [March 24, 1969], No. 13818/70. Heading G2A. A projection viewer and copier for use with microfilms or microfickes comprises light source 21, a condenser 27 consisting of two Fresnel lenses and a diffusion plate 29, a microfilm platform 40 carried on a vertically adjustable support 38, a plurality of projection lenses 35 carried on a turret 33 rotatable to bring any one of the lenses into the focal plane of the condenser 27, the position of platform 40 being adjustable, dependant on the focal length of the selected lens, to give a projected image of constant format and intensity which is selectively projected, by means of pivoting mirror 54, on to viewing screen 14 or photo-copying plane 58. Platform 40 is rotatable about, and orthogonally movable transversely to the optical axis 26. Screen 14 may be removed to permit distant projection. The movements of low selection and microfilm platform adjustment are carried out by motors 37, 34, 41, 43 which may be controlled by push-buttons or automatically a tape-controlled servo-system in which each movement shifts the slider of a potentiometer whose resistance is compared with a fixed pre-selected resistance.
Patent GB-559731-A (GB)
Title: Printing telegraph apparatus
IPC: H04L17/20
Filed: 1942-10-02
Abstract: 559,731. Punching-machines. TELETYPE CORPORATION. Oct. 2, 1942, No. 13844. Convention date, Sept. 20, 1941. [Class 31 (ii)] [Also in Group XL] In a printing telegraph system having a printer-reperforator combined with a perforatedtape sensing device controlling a cam-operated transmitter as well as the selection of a switching lever which may determine the channel over which the mesage is transmitted, the printerreperforator resembles closely the instrument described in Specifications 540,612 and 561,148, the notched code bars 27, Fig. 4, being set selectively by a selector mechanism of the sword and T-lever type described in Specification 245,149, [Class 40 (iii)]. The selected pull-bar 26 is caused by the printing bail 37 to operate the corresponding type-bar to print the selected character. The code bars 27 through levers 46, 52, 56 operate corresponding interponents 58 of the perforating mechanism, the selected punches 66 being operated by a hammer 62 which is controlled by a cam sleeve 121 on a shaft 106. The punch block 67, Fig. 6, has a die-plate 72 to produce a "lidded" aperture in the tape as in Specification 540,612 by a shearing rather than a blanking operation. Spring-operated levers 77, pivoted to the die plate, depress the stripper or ejector pins 74 at the end of each cycle to eject the " lids " from the die plate. A rachetoperated feed-wheel 81 is supported within the punch block, the tape being fed over guide 143 from a pre-punch unit 91 which perforates a feed hole in the tape, a second feed-wheel 98 being arranged between the unit 91 and the punch block, thereby making it possible to vary the position of the code holes with respect to the feed holes and to maintain a tape loop between the units, thus reducing the drag on the tape at the perforating position. A manual release for the cam sleeve 121 permits the operation of the perforating mechanism independently of the printing mechanism. Specification 531,337 also is referred to.
Patent GB-539845-A (GB)
Title: Improvements in and relating to electric contact combinations
IPC: H01H1/04
Filed: 1940-09-04
Abstract: 539,845. Switch contacts. MALLORY METALLURGICAL PRODUCTS, Ltd. Sept. 4, 1940, No. 13850. Convention date, Feb. 20, 1940. [Class 38 (v)] The positive contact of an interrupter or other switch is made of pure tungsten and the negative contact of an alloy of tungsten and molybdenum containing .05 to 10 per cent molybdenum. The material used may vary from a grain count of 10 grains per square millimeter to one of 100,000 grains, but preferably a small grain is used.
Patent GB-612403-A (GB)
Title: Improvements in or relating to helicopters
IPC: F16H21/48
Filed: 1945-07-20
Abstract: 612,403. Linkwork for conveying circular motion. LANDGRAF, F. July 20, 1945, No. 13867/48. Convention date, Dec. 8, 1942. Divided out of 612,317, [Group XXXIII]. [Class 80 (iii)] [Also in Group XXXIII] In a helicopter comprising a pair of intermeshing rotors set one on each side of the longitudinal axis, each rotor is rotated by a disc 66 connected by a series of parallel oblique tie-rods 344, 345 to second parallel disc 342 driven by the engine. The ends of the rods are oppositely threaded and engage members 340, 346 carried upon vertical pins in the discs 66, 342. Each of the driving discs 342 is secured to a gear-wheel 360 engaged by an enginedriven worm 362, Fig. 8.
Patent GB-580782-A (GB)
Title: Improvements in radio frequency transformers
IPC: H03H7/01
Filed: 1944-07-20
Abstract: 580,782. Transformers. BRITISH THOMSON-HOUSTON CO., Ltd. July 20, 1944, No. 13904. Convention date, July 21, 1943. [Class 38 (ii)] A transformer for coupling high-frequency circuits in wireless receiving apparatus and which is provided with means for varying the self-inductance and mutual inductance of the windings comprises a body member 10 of copper, aluminium, or other non-magnetic conducting material having cylindrical recesses 11, 12 connected by a slot 32. In each-recess is a chamber 14 formed of magnetic material and preferably of powdered iron within which is a coil 18 wound on an insulating former 17. Fixed and movable tuning cores of powdered iron 20, 21.are arranged in each former 17 to enable the self-inductance of the coils to be varied. The body 10 acts as a one-turn link to couple the coils together, the tightness of the coupling being determined by the position of a threaded rod 34 in the slot 32. The rod 34 may be slotted throughout its length so that a maximum and minimum coupling may be obtained by a quarter revolution of the rod. A lock-nut may be provided to fix the rod in position and an adjustable screw may be fixed in the upper end of the slot 32 to limit the position of the rod and the maximum coupling between the coils.
Patent GB-433566-A (GB)
Title: A box to hold fishing fly hooks
IPC: A01K97/06
Filed: 1934-05-09
Abstract: Fish hooks are held in a case by passing the barbs through perforations in a ridged tray containing oiled fibrous matter.