baber/WOPTO huggingface dataset:
Patent GB-688630-A (GB)
Title: Improvements in trigger mechanism for firearms
IPC: F41A19/48
Filed: 1949-12-23
Abstract: 688,630. Firearms. SCHWEIZERISCHE INDUSTRIE-GES. Dec. 23. 1949 [Dec. 23, 1948], No. 33024/49. Class 119. The firing mechanism is provided with means whereby shortly before the release of the sear 5 from the hammer 10 an increased resistance to the pull of the trigger is encountered, such increase being provided by interposing a force which checks the disengaging movement of the sear. In the firearm shown a pull on the trigger causes the trigger rod 9 to rotate the sear about its pivot 2 against the action of a spring 6. When the surfaces 11, 12 of the sear and hammer disengage the hammer swings about its pivot 3 under the action of a spring 16 to strike the firing pin 20. Just before this disengagement the sear meets an abutment 18 of a lever 17a pivoted at 4, the lever then serving to compress the spring 16 from above. The spring 16 thus provides the required check action to the trigger.
Patent GB-917689-A (GB)
Title: Improved amplifying, impedance changing or level-changing apparatus
IPC: H03F3/44
Filed: 1959-09-29
Abstract: 917,689. Valve amplifying circuits. WHITE, R. B., and MURRAY, C. T. Sept. 29, 1959 [Oct. 1, 1958], No. 33070/59. Class 40 (6). An amplifier comprises a pair of seriesconnected valves V1, V2, the output being derived from the anode of valve V2 and cathode of valve V1. The signal input is fed to the grid of the valve V2. The output of this valve is compared with the input by means of resistors R1, R2 and the difference is applied to the grid of valve V3 which drives the valve VI. In a modification (Fig. 3, not shown), the anode load of valve V3 is tapped and the tap connected over a battery to the output terminal.
Patent GB-446690-A (GB)
Title: Improvements in or relating to dynamo-electric machines
IPC: H02K23/02
Filed: 1934-11-17
Abstract: 446,690. Controlling generators. CESKOMORAVSKA - KOLBEN - DANEK CO., Ltd., 36, PalackÚho, and KAUDERS, V., 19, PetrskÓ, both in Prague. Nov. 17, 1934, No. 33143. [Class 35] In a generator with the main field winding opposed by the armature field or by a series winding, one or both field windings have twc parallel branches on poles of opposite polarity, the distribution of current in the two branches is variable and leakage paths are provided separating the exciting and counteracting windings. In the form shown, adjustment of the rheostat 18 varies the relative strength of the poles the flux of which is opposed by the armature cross field and by the winding 23 connected in parallel with the main winding 9 on pole 5. The upper pole, which has the greater excitation is saturated and may have its cross section reduced by slots whilst the section of the yoke near the pole 5 may be increased. The yoke may have projections extending towards the pole tips to conduct the leakage flux and the field windings may be subdivided. The opposing field winding 23 may be omitted from crossfield machines, but in other machines the opposing windings are on the field poles and near to the armature and are well separated from the main field windings. The saturation may be varied by removing or adding plates to the yoke in the vicinity of the poles.
Patent GB-830295-A (GB)
Title: Window frames
Inventor: BIRCH FRANK
IPC: E06B3/40
Filed: 1957-10-24
Abstract: 830,295. Windows. HOPE & SONS Ltd., H. June 12, 1958 [Oct. 24, 1957], No. 33207/57. Class 20(3) In a centrally pivoted window comprising a fixed frame and a pivoted frame made of steel or a rigid plastic material is such that at least the two opposite sides to which the pivots are attached are each made of three bars, one of which a forms the side of the fixed frame and the other b forms the side of the pivoted frame, the third c being in two parts extending from opposite sides of the pivot and having one part secured to the frame a and the other to the frame b. An alternative frame crosssection is shown in Fig. 4.
Patent GB-363072-A (GB)
Title: Improvements in stop motions for ring spinning and doubling machines
IPC: D01H13/16
Filed: 1930-11-05
Abstract: 363,072. Stop motions for ring spinning and doubling frames. RUSHTON, H., Davenport Street Works, and BARBER, H., Queen's Avenue, Hurdsfield Estate, both in Macclesfield, Cheshire. Nov. 5, 1930, No. 33213. [Class 120 (ii).] A stop motion for ring spinning and doubling frames of the type in which a detector wire or guide eye is supported on each thread, so that on breakage of the thread it falls and stops the feed rollers and the winding spindle of its particular head, comprises a plurality of detector thread guide a each mounted on the end of a rod A which is pivoted on a horizontal rod A<1> and which carries a depending finger a<1> bearing against a horizontal bar C, carried by arms c pivoted on the rod A<1>. One arm c carries a balance weight c<1> and the other a balance weight c<2>. A lever D is pivoted to a weighted catch E, pivoted on the bracket f, so that it lies in the path of rearward movement of the bar G. When a thread breaks its detector falls, and the corresponding finger a<1> moves the bar C which in turn moves the bar D into contact with a projection h on an oscillating lever H. The weighted catch E is accordingly tilted so that the projection g on the vertical rod G is disengaged from the notch e and the rod G moves vertically under the action of a spring to disengage the feed rollers, which are independently driven for each head and preferably have their axes at right-angles to the length of the frame, from their drive. The vertical movement of the rod G may stop the feed rollers according to the method described in Specification 363,073. The spindle is also stopped by a projection on the rod engaging a projection on the spindle and tilting the spindle out of contact with its driving belt and into contact with a braking surface. The rod G has a footstep to depress it against the action of the spring pressing it upwards to bring the members into position for restarting the machine.
Patent GB-333024-A (GB)
Abstract: 333,024. Measures, J. F., and Russell, P. A. July 6, 1929. Moulding-machines. - A machine for lining runner- or riser-bushes comprises an apertured support 1 for the ring 24 to be lined, a spring- pressed block 7<b>, fitting said apetrure and, if desired, projecting above the plate 1, and a ram 14 corresponding in shape to the hole to be formed in the lining. The ring 24 is positioned on the support 1 by pins (not shown) and filled with sand and then the ram 14 is moved down by a hand lever 23 or by any other manual or power driven device. This forces down the block 7b, the excess sand passing through the support 1, Fig. 5. The block 7b is retained in its lower position by a spring catch 26 to prevent it from damaging the bush when the ram 14 is withdrawn.
Patent GB-429277-A (GB)
Title: Improvements in or relating to a process for concentrating aqueous dispersions of vulcanised rubber
IPC: C08C1/10
Filed: 1933-11-28
Abstract: Vulcanized latex is purified and/or concentrated by submitting it to the action of centrifugal force, followed by dilution of the portion rich in rubber solids with a washing liquid such as water and then re-centrifuging.  It is preferable to add ammonia or other anticoagulant to the centrifuged material after dilution to maintain the concentration of anticoagulant equal to that in the original rubber dispersion.  The vulcanized latex before being centrifuged is preferably allowed to stand for some time to permit the excess of vulcanizing ingredients to settle out.  The liquids containing the non-rubber fraction obtained after centrifuging are again centrifuged to extract the last traces of rubber which may not have been extracted in the first centrifugal treatment. Specification 257,885, [Class 70], is referred to.
Patent GB-1358211-A (GB)
Title: Stacking apparatus
IPC: B65H29/34
Filed: 1972-07-17
Abstract: 1358211 Delivering sheets R MOHR 17 July 1972 [16 July 1971] 33376/72 Heading B8R A batch of sheets 10 is brought into position over a stack 12 by means of a reciprocating support 3 having a tapered front end and vertically adjustable on a column 1. On return movement of the support 3, a pivoted stop 6 prevents the sheets 10 sliding forwards off the stack, a pivoted plate 9 prevents rearward movement of the sheets 10, and a fixed stop 14 prevents rearward movement of the stack 12. The stop 5 is adjustable along a toothed bar 4 according to the sheet length by rotating a wheel 6a.
Patent GB-425826-A (GB)
Title: Apparatus for teaching book-keeping
IPC: G09B19/18
Filed: 1934-11-21
Abstract: 425,826. Educational appliances. SCHUSTER, U., 45, Avenue Adolphe Buyl, Brussels. Nov. 21, 1934, No. 33503. Convention date, Nov. 21, 1933. [Class 146 (ii)] An apparatus for teaching double entry book - keeping comprises a number of pairs of scale pans 6, each pair being carried by a beam 5 pivoted at 4 to the supporting frame 2 and representing a particular account or accounts. The beams 5 carry pivoted pawls 10 adapted to engage racks 11, 12 mounted on each side of the upright 2. When weights are placed in any scale pan, indicating a change in the state of that account appropriate to the pan, the change is shown by the inclination of the beam, which is measured by a pointer 7 fixed to the beam and a scale 8, while the cumulative effect of all the movements of the scale pans produced by adding weights thereto is shown in the total movement of the racks 11, 12 brought about by the downward movements only of the ends of the beams, and which therefore indicate the " debit " and " credit " movements of the whole of the several accounts. For this purpose, the racks are each provided with indicators 19<a>, 19<b> adapted to move over scales 18<a>, 18b. The racks are toothed on both sides, and alternative beams are mounted on opposite sides of the upright 2. Each beam is provided with a counter-weight, and the racks also carry counter-weights 17 attached thereto by chains 16.
Patent GB-1272678-A (GB)
Title: Heat-sensitive stencil materials
IPC: B41N1/24
Filed: 1969-07-03
Abstract: 1,272,678. Heat sensitive stencil sheets. RICOH K.K. 3 July, 1969 [3 July, 1968], No. 33584/69. Heading B5N. [Also in Division G2] A heat sensitive stencil sheet is made by keeping a vinyl chloride-vinylidene chloride copolymer film 2 in contact with a heating roller 3 having a surface temperature of 80-110 C., cooling the film 2 immediately it leaves the surface of said heating roller 3 by passing it over a cooling roller 4 or by blowing cold air on to the film 2, applying an adhesive, e.g. a solution of polyvinyl acetate 5 in an organic solvent to the film and adhering it to a thin porous paper sheet 7 using laminating rolls 8, 9 and taking up the completed sheet on roll 10. A cutter may be provided behind the laminating rolls 8, 9 to cut the sheet to the desired dimension. The film 2 is preferably 6-10 microns thick and has a heat shrinkage of 2.1-8.0% (ASTM DI 204-54).
Patent GB-925365-A (GB)
Title: Space heating appliance
IPC: F24C1/14
Filed: 1960-09-30
Abstract: 925,365. Reflector stoves. E. C. TURNER. Sept. 29, 1961 [Sept. 30, 1960], No. 33599/60. Class 126. [Also in Group XIII] In an air heating stove air is drawn by convection through a lower inlet 11, around a combustion chamber 1 and over heat exchange tubes 7 to be discharged through an upper outlet 12, the front of the combustion chamber being closed by a radiant panel 2. The tubes 7 lead from the combustion chamber to a register plate 7a for connection to a flue (not shown) and the inlet 11 and outlet 12 are formed by wire, expanded metal or perforated sheet grills. Reflector plates 18 and 19 are provided above and below the radiant panel 2. In the embodiment shown, two extended gas burners 3 are positioned in the combustion chamber which is supplied with air from the convection stream through inlets 6. Liquid or solid fuel may also be employed and in the latter case the radiant panel may be detachably mounted for refuelling or alternatively a hopper may be provided. A fan or impeller may be used to assist air circulation and in the case of solid fuel combustion a blast of combustion air may be directed over the fuel towards the radiant panel, the fuel and ash or clinker being lowered through the apparatus either under the influence of gravity or automatically at a constant or thermostatically controlled rate. Trays 20 are fitted at the bottom of the combustion chamber to collect condensed water when the stove is started up, the water being re-evaporated when the stove temperature rises.
Patent GB-1111543-A (GB)
Title: Process for the preparation of ª†-lactones
IPC: C07D315/00
Filed: 1965-08-05
Abstract: The invention comprises the lactone of 3 - phenyl - 6 - methyl - 4 - hydroxyhept - 5 - enoic acid and a process for preparing lactones of 4-hydroxycarboxylic acids generally, by reacting a 3-ketotetrahydrothiopyran - 1,1 - dioxide with a base in an aqueous medium, followed by acidification; the lactone of 3,3,6-trimethyl-4-hydroxyhept-5-enoic acid is also specified.
Patent GB-641340-A (GB)
Title: Improvements relating to electric switches
IPC: H01H23/12
Filed: 1949-02-21
Abstract: 641,340. Tumbler switches. PARSONS, Ltd., C. H., and HANDLEY, G. B. Feb. 21, 1949, No. 3709/50. Divided out of Complete Specification of 641,296. [Class 38(v)] A quick-make tumbler switch for heavy currents and which may incorporate some of the features of Specification 641,296, comprises a spring-blade contactmember 10 clamped tc the base at 15 and operated by a dolly 11 which is pivoted by trunnions 23 and has a recess 30 between two projections 31, 32. A loose toggle arm 29 bears against the bottom right-hand corner of the recess in the closed position, Fig. 1, and is moved into a substantially vertical position, which gives maximum contact separation, by the counter-clockwise movement of projection 32. Further movement of the dolly causes the toggle arm to pivot about projection 32 and its lower end to slide into the bottom left-hand corner of the recess, Fig. 3, whereby the contacts are held open, with a somewhat reduced gap.
Patent GB-510867-A (GB)
Title: Improvements in or relating to systems for the measurement or regulation of the height of a liquid column
IPC: F22D11/00
Filed: 1937-12-06
Abstract: 510,867. Measuring and regulating systems. ASKANIA-WERKE AKT.-GES. VORM. CENTRALWERKSTATT DESSAU UND C. BAMBERG-FRIEDENAU. Dec. 6, 1937, No. 33716. Convention date, Dec. 4, 1936. [Class 135] A system for the measurement and regulation of the height of a liquid column includes means, such as a diaphragm, subject to the hydrostatic pressure of the column and a weight loading acting in opposition to said pressure, the opposing action of the weight varying when the inclination of the column to the vertical varies so as to compensate at least approximately for variation in pressure due to such change in inclination. In the form shown the diaphragm 6 is loaded by a weight 10 carried by a member 8 guided by a pair of slotted links 12, 12' pivoted to the casing and the member 8. The upper side of the diaphragm is subject to the hydrostatic pressure due to the water level in the boiler 1 and steam pressure in the boiler while the under side is subject to the hydrostatic pressure due to the water level in an elevated tank 3 and the steam pressure in the boiler. The member 8 engages a depression in a lever 14 which controls a relay (not shown). When the elevated tank is not vertically above the boiler the axis of the pressure responsive device is, inclined to the vertical by the same angle as the imaginary line connecting the vessels 1 and 3. The Specification as open to inspection under Sect. 91 shows the application of the invention, to the control of a fluid-pressure servomotor having a swinging jet control and a loading spring follow-up mechanism. This subjectmatter does not appear in the Specification as accepted.
Patent GB-918912-A (GB)
Title: Improvements relating to textile ring spinning
Inventor: LEACH FRANK
IPC: D01H9/02
Filed: 1958-03-05
Abstract: 918,912. Ring spinning machines. PERMO SPINNING Ltd. March 4, 1959 [March 5, 1958], No. 33885/58. Divided out of 918,911. Drawings to Specification. Class 120 (2). A ring spinning machine having a continuously operating chase mechanism common to all the spindles and a series of traverse mechanisms partaking of the chase movements is provided with releasable connecting means between each ring or small group of rings and the corresponding traverse mechanism and with guide means allowing the released ring or rings to be brought to the initial position of traverse. The subject matter of this Specification is included in Specification 918,911 but the claims differ.
Patent GB-364750-A (GB)
Title: Improvements in, and relating to, twist drills and like tools for drilling or boring holes in metal and other materials
IPC: B23B51/02
Filed: 1930-11-11
Abstract: 364,750. Drills. PAIGE, W. R., Drill Square, Langsett Road, Sheffield. Nov. 11, 1930, No. 33932. [Class 83 (iii).] A twist drill or like fluted tool is provided adjacent the extreme point a with grooves g which give relief to the point and isolate it from the initial cutting edges b, for the purpose of allowing cuttings produced by the point to escape readily. The grooves extend helically from the initial cutting edges to the rear of the usual point-relief or clearance and may increase in width and depth from the cutting edges b to the non- cutting edges f.
Patent GB-333826-A (GB)
Title: Process and means for the preservation of the aroma of tobacco and tobacco goods
IPC: A24B15/22
Filed: 1929-11-07
Abstract: 333,826. Senftner, G. Nov. 9, 1928, [Convention date]. Paper, treating with special materials. - In order to preserve the aroma of tobacco and tobacco goods, the paper or other covering- materials are treated with photo-dynamically active substances such as ergosterine. cholesterine, eosin, or methylene blue, and the effect may be further enhanced by subsequent exposure to ultra-violet light. The Specification as open to inspection under Sect. 91 (3) (a) states also that the covering- materials may be impregnated or coated with solutions of the substances mentioned, or such substances may be added during manufacture. e.g. to paper pulp. This subject-matter does not appear in the Specification as accepted.
Patent GB-1184256-A (GB)
Title: Electric Switch Construction
Inventor: MCCLURE GERALD
IPC: B60Q1/42
Filed: 1967-07-24
Abstract: 1,184,256. Latched switches. ESSEX INTERNATIONAL Inc. 24 July, 1967, No. 33959/67. Heading H1N. [Also in Division G4] A switch operating vehicle warning and/or indicator lamps (2-5, Fig. 6), has a spring- loaded reciprocatable operating member 16 carrying a contact 29 with resilient stressed fingers 34, 35, (36), 34a, 35a, (36a), (see Fig. 2), e.g. of beryllium copper alloy, each finger having an abutment such as 42a co-operable with a curved surface on respective fixed contacts 44, 52, (45), 46, and an insulating stud 56, and a fixed contact (47) (see Fig. 2) to latch the switch " on ", when member 16 is moved to the left from the full line to the dotted line position by a manual knob (24, Fig. 1) thereon. The switch is switched " off " by the steering wheel cam (15, Fig. 1) that cancels the signals and co-operates with a nose 25 on member 16, spring 33 returning the switch to its "off" position.
Patent GB-846000-A (GB)
Title: Improvements relating to electrical waveguides
Inventor: BUCKLEY GEORGE WILLIAM
IPC: H01P1/08
Filed: 1956-11-07
Abstract: 846,000. Waveguides. METROPOLITANVICKERS ELECTRICAL CO. Ltd. Nov. 5, 1957 [Nov. 7, 1956], No. 340l9/56 Class 40(8). Two sections of waveguide having the same elliptical cross-section and both orientated with the major axes vertical are connected together at right angles and provided at the joint with a seal formed by a circular sheet of dielectric material. A circular dielectric plate 3 is located in a recess of flange 5 on guide 2 and the flange 4 on guide 1 is so shaped as to provide a choke coupling around the periphery of the dielectric seal to provide electrical continuity between the walls of the waveguide sections.
Patent GB-1385715-A (GB)
Title: Diffusing means for inlet chambers of high speed pumps
IPC: F04D29/40
Filed: 1972-07-20
Abstract: 1385715 Pump inlet chambers KLEIN SCHANZLIN & BECKER AG 20 July 1972 [28 July 1971] 34052/72 Heading F1A An inlet chamber 3 for a high speed pump has a diffuser wall 4 extending between the inlet and the rear wall of the chamber, the pump inlet 2 being mounted above a reduced thickness portion 5 of the wall 4. As shown, the wall 4 is cut-away beneath inlet 2, and the chamber has an upper wall defining an enclosure for the pump 1 isolating it from the tank or reservoir communicating with the inlet chamber. In Fig. 3 (not shown), the casing or inlet conduit of the pump is cylindrical and is finned to support it in a cut-away portion of the diffuser wall which extends above the tank or reservoir liquid level, the chamber having no upper wall.
Patent GB-415923-A (GB)
Title: Improvements in and connected with front wheel axle suspensions for motor road vehicles
IPC: B60G3/01
Filed: 1933-12-04
Abstract: 415,923. Motor-vehicle stub axles. TUGWOOD, R. J., 77, Chancery Lane, London.-(Gerardi Engineering Corporation; 95, Liberty Street, New York, U.S.A.) Dec. 4, 1933, No. 34067. [Class 79 (v).] A vehicle suspension includes an axle 10 secured to the vehicle frame, and having at its ends guiding supports 13 for members 14 carrying a stub axle 15 and provided with members 18 articulated thereto and connected to a transversely-disposed laminated spring 19 by a link 21 inclined inwardly so as to urge the member 14 inwardly to offset the reaction on the member 13 caused by the stub axle 15. The axle ends 13 are preferably bent rearwardly of the central portion and are inclined as shown in Fig. 2, the suspension spring also being inclined so as to lie in the plane through the supports.