baber/WOPTO huggingface dataset:
Patent GB-1309929-A (GB)
Title: Photographic apparatus
IPC: G03B17/52
Filed: 1970-06-05
Abstract: 1309929 Photographic processing apparatus INTERNATIONAL POLAROID CORP 5 June 1970 [30 June 1969] 27341/70 Addition to 1205147 Heading G2A The apparatus described in Specification 1205147 has the resilient member 506 received in elongated slots 574 formed in tab portions 572 of the one member 504, the other member 502 having a support member 518 with resilient upturned flanges 524, 526, 528 for positioning the spreader device within the camera back.
Patent GB-1445489-A (GB)
Title: Styrene-methacrylic acid copolymers and their preparation
IPC: C08F212/00
Filed: 1974-06-21
Abstract: 1445489 Styrene/methacrylic acid copolymer DART INDUSTRIES Inc 21 June 1974 [1 Oct 1973] 27690/74 Heading C3P A copolymer of 85-97% wt. of styrene and 15-3% of methacrylic acid is obtained by introducing the methacrylic acid continuously into an aqueous suspension of styrene at 65- 120 C. containing initiator at a rate such that all the acid is added before the styrene conversion reaches 50% and continuing polymerization to completion. Preferably a mixture of low and high temperature initiators is used, e.g. benzoyl peroxide and t-butyl peracetate.
Patent GB-246266-A (GB)
Title: Improvements in or relating to multi color kinematograph or other films
IPC: G03B33/00
Filed: 1924-11-25
Abstract: 246,266. Thornton, J. E. Nov. 25, 1924. Addition to 224,569. Colour kinematography.-In the production of three-colour or four-colour kinematograph films or photographs according to the parent Specification, wherein two component thin films, each carrying two colour-record images, are cemented together in registered superimposition to produce a film in three or four colours, double picturewidth thin material is used for both negative and positive images, and the multi-colour positive film is produced by printing two colour-record images side by side simultaneously from a. double-width negative film upon the doublewidth positive film material by a photographic process, finishing this pair of images, printing two more colour-record images in registered superimposition on the first two from a doublewidth negative film or printing clichÚ by any photographic or photo-mechanical process, and finally severing longitudinally the double-width positive film and cementing together in register the two two-colour component films thus produced. The first pair of prints may be silver prints and the second pair may be superimposed after resensitizing with bichromate; or the first pair may be bichromated colloid prints, and the second pair may be superimposed after resensitizing with salts of silver, iron, uranium, etc.; or both pairs of prints may be produced by the same process. The images may be in relief or non-relief. Collotype, hydrotype, pinatype, and dye-printing are mentioned as methods of producing the second pair of images photo-mechanically. Specifications 26827/12; 15648/14, 5100/15, [both in Class 98 (ii), Photographic processes &c.], 213.647, 213,866; 214,934, [Class 98 (ii), Photographic processes &c.]; 231,030, 232,302, and 246,257 are referred to.
Patent GB-519701-A (GB)
Title: Improvements in and relating to door checking and door holding device
IPC: E05C17/20
Filed: 1938-09-28
Abstract: 519,701. Stays for hinged doors. SCHONITZER. R. 1. Sept. 28, 1938, No. 28199. [Class 65 (i)] A stay for the doors cf motor cars &c. comprises a bar 13 pivoted to th door at 16 and passing between resilient guide rollers 50 in a casing fitted to the body 11. The stay has one or more projections 28 which after passing the rollers, coact with the rollers to hold the door in open position. The end of the stay carries a rubber &c. buffer 23 to limit the opening of the door. In another form, the rollers 50 are mounted in slidable bearings acted on by the springs &c. In another form, the stay has a series of projections 28, providing a series of positions at which the door may be held open.
Patent GB-631223-A (GB)
Title: Improvements in or relating to the manufacture of sectional heat-exchangers
IPC: H01F27/02
Filed: 1947-10-22
Abstract: 631,223. Making heat-exchangers. BINDER, H. G. Oct. 22, 1947, No. 28300. [Classes 83 (ii) and 83 (iv)] Cupping.-Halves of heat-exchanger sections having at their ends bosses lying within a peripheral flange and which are too large to be stamped in one operation by the press available, are formed from sheet-metal by two or more successive stampings, in which each stamping forms part only of the half-section. A sheetmetal blank is stamped successively at each end to form the boss g and the end portions of the ribs h, Fig. 6. If the section is of such a length compared with the tool that the inner end portions of the ribs do not meet but merge at i with a flat centre portion of the blank, one or more further stamping operations is or are performed to complete the ribs as shown at k in Fig. 7. The end portions are formed by cooperating dies l, p, Fig. 8, and the strip n is held on three sides by a holding ring m which is cut away at the side facing towards the other end of the strip to allow the ribs h to develop. Dies q, r for forming the central rib portions are shown in Fig. 10. The half-sections are subsequently welded together along the peripheral flanges to form complete sections.
Patent GB-708857-A (GB)
Title: Improvements in or relating to control arrangements for connecting an electric generator to an existing electric main
Inventor: GIL JOSEPH VALDERRAME
IPC: H02J3/42
Filed: 1951-12-03
Abstract: 708,857. Supply systems depending on two sources. PERKINS, Ltd., F. May 8, 1952 [Dec. 3, 1951], No. 28306/51. Class 38(4) An arrangement for preventing the connection of an induction generator (not shown), to an existing mains supply when the speed of the machine is not within predetermined limits, comprises a tachometer generator G driven with the machine and controlling relays A-C, of which B and C have contacts in series with the operating coil H of a contactor K by which the machine is connected to, or disconnected from, the mains. When the machine is run up from standstill a signal lamp AM is energized from the mains over the back contact A1 of the relay A until a predetermined lower speed limit (determined by resistor D) is reached: the output from the tachometer generator is then sufficient to operate relay A which then interrupts the circuit of lamp AM and energizes relay B from the mains over contact A2. Operation of relay B inserts an economy resistor E in series with relay A, connects an over-speed relay C to the tachometer generator, energizes a signal lamp GN and, subject to closure of a manual switch J energizes the coil H, thus connecting the machine to the mains. If the speed of the machine rises above a predetermined upper limit (determined by resistor F) relay C operates to disconnect the machine by interrupting the circuit of coil H at contact C1 and to energize a signal lamp RD over contact C2. The arrangement is such as to provide a small and substantially constant load on the tachometer generator.
Patent GB-672617-A (GB)
Title: Improvements in and relating to brushes for cleaning or roughening suede leather
IPC: A47L23/12
Filed: 1950-11-20
Abstract: 672,617. Brushes. SCHROERS, H. Nov. 20, 1950 [Nov. 21, 1949], No. 28346/50. Class 19. A. brush, for cleaning or roughening suede leather, comprises a brush back, bristles and envelope case all made in one piece of rubber. In the Figure the brush consists of a back plate a having integral bristles c and a case b having press button members d, e. The case b and the brush a, c consist of rubber and are made in one piece as by vulcanisation. In use the case b is opened and the flaps folded over the back plate a and secured by the press buttons. When the brush is not in use the flaps may be folded over it and fastened. The brush may be of any desired shape and may be employed for purposes other than cleaning suede leather. Other fastening means than the press buttons may be provided.
Patent GB-1399615-A (GB)
Title: Jacquard mechanisms
IPC: D03C3/20
Filed: 1972-06-16
Abstract: 1399615 Jacquards SULZER BROS LTD 16 June 1972 [19 June 1971] 28355/72 Heading D1E Jacquard lifting hooks are selected by means of flexible members 65 which are deformable by electrical or magnetic action. In Figure 2 a draw knife 33 has transveresly slidable risers 57 with cam surfaces 77 acted on by arms of pivotal pressers 43 moved into two extreme positions by a cam 41. As the cam 41 rotates all the pressers 43 are pivoted anticlockwise against spring 49. Selected flexors 65 are then actuated to take up the dotted line position so the selected flexors 65 prevent the return clockwise of then associated pressers 43. As the draw knife 33 lowers, the selected pressers move then associated risers 57 to the right, and the non-selected pressers move their risers 57 to the left, so that, as the draw knife 33 rises the selected risers engage their hooks 27. In Figure 3 (not shown) the flexors operate to prevent the lowering of selected hooks. In Figure 5 a cam 151 pivots all first pressers 141 to enable the flexors 65 to be actuated and selected first pressers 141 are returned by springs 145 so that rotation of the cam 151 bears on members 149 to pivot second pressers 121 so that presser needles 119 are moved to the right to move hooks 107 out of engagement with double lift knives 110 (only one shown). The presser needles 119 are retained in either extreme position by a pivoted latch 133 operated on by a cam surface 137 of a draw knife to release the presser needle 119 for selection. Open shed webs 115 are provided on the hooks 107 for engagement by projections 117. In Figure 6 the flexors 65 are moved transversely to the Figure to pivot members 167 so that, if they are located between presser needles 119 and the draw knife cam 175, the presser needle will be moved to disengage the hook 107 from the knife. In Figure 7 (not shown) the presser needle is surrounded by a slider actuated by the draw knife cam. In Figure 9 the flexors 65 act to cover or uncover ports in air lines 203, 205 so that imbalance of pressure causes movement of a piston 215 acting directly on the heald 27. In Figure 8 (not shown) the flexors act directly on reading needles connected to presser needles operated by a presser frame.
Patent GB-1485728-A (GB)
Title: Method for making magnesite grain
IPC: C01F5/08
Filed: 1975-07-04
Abstract: 1485728 Refractory magnesite grain DRESSER INDUSTRIES Inc 4 July 1975 [28 Aug 1974] 28360/75 Heading C1J A refractory magnesite grain comprising from 86 to 95% by weight of MgO as periclase and up to 10% by weight of calcium zirconate and dicalcium silicate may be prepared by mixing magnesium hydroxide slurry, limeyielding material and zircon, calcining and then dead burning the mixture to provide a grain. The grain may be characterized by having periclase crystallites surrounded by films of dicalcium silicate and finely crystalline calcium zirconate within the films. In the example, the grain is prepared by slurry mixing caustic magnesia, hydrated dolomite and zircon, drying the slurry, briquetting and burning the briquettes. The grain is then size graded, mixed with pitch and carbon black, formed into a brick and baked.
Patent GB-408618-A (GB)
Title: Device for cutting the loops of knots
IPC: D05B91/04
Filed: 1933-10-13
Abstract: 408,618. String-cutters. LAPIERRE, R. L. F., Jaujac, Ardeche, France. Oct. 13, 1933, No. 28383. Convention date, Oct. 14, 1932. [Class 30.] A thread-cutter for reducing to a minimum the free strands of a weaver's knot, comprises a polished rod 1 over which the loop of the knot is placed, the loop being then tightened and pulled upwardly along the rod until it is severed by a blade 3 projecting from the side of the rod 1 and protected by a hood 4. The free strands are then pulled through the knot in the usual way. The rod 1 may, as shown, be carried by a thimble 2 or by a part of a loom.
Patent GB-1166929-A (GB)
Title: Fence Post
Inventor: GOODALL CHARLES
IPC: E04H17/08
Filed: 1967-06-20
Abstract: 1,166,929. Fence posts. SWYFTITE Ltd. 30 May, 1968 [20 June, l967], No. 28397/67. Heading E1B. A T-section metal fence post 10 has welded thereto two tubular sockets 12 for receiving ground engaging spikes, the sockets being inclined in. opposite directions and being located in use just above ground level. The upper . end of the post has angle shaped brackets 11 formed with notches or apertures through which fence wires pass. The two sockets may be pivotally attached to the post. For a wooden post sockets are on metal plate which is bolted to the post.
Patent GB-1472870-A (GB)
Title: Process for preparing cephalosporins
Inventor: FOGLIO MAURIZIO
IPC: C07D513/04
Filed: 1975-05-20
Abstract: 1472870 Cephalosporin synthesis SOC FARMACEUTICI ITALIA SpA 20 May 1975 [22 May 1974] 28410/76 Divided out of 1472865 Heading C2C A process for the preparation of a cephalosporin having the general formula comprises treating a thiohydrazoazetidine of the formula wherein R is hydrogen, (C 1 -C 4 )alkyl, cyanomethyl, thienylmethyl, furylmethyl, naphthylmethyl, benzyl, phenoxymethyl, phenylisopropyl, phenoxyisopropyl, 4 - pyridyl - 4 thiomethyl or 1-tetrazolyl-methyl; R<SP>2</SP> and R<SP>3</SP> represent (C 1 -C 4 )alkyl, a mononuclear aryl or heterocyclic group, cyano, -COR<SP>4</SP>, -COOR<SP>4</SP>, -PO(OR<SP>4</SP>) 2  or -CONHR<SP>4</SP> in which R<SP>4</SP> is (C 1 -C 4 )alkyl or a mononuclear aryl or heterocyclic group; or R<SP>2</SP> and R<SP>3</SP> together represent a residue of any of the formulae Y is a residue of the formula and Z is hydrogen, bromine, iodine, hydroxyl, alkanoyloxy, alkyloxy, azido, amino, acetoxy, carbamate or an S-mononuclear nitrogen heterocyclic ring with an organic or inorganic base or an inorganic basic or weakly acid oxide at a temperature of from -100 to + 120 C. The inorganic oxide is suitably Al 2 O 3 , Fe 2 O 3 , Cr 2 O 3  or SiO 2 , and the base is suitably Na 2 CO 3 , NH 4 OH an alkali or alkaline earth metal hydroxide, an alkali metal alcoholate, an aliphatic, aromatic or heterocyclic amine, an alkylammonium base or a basic resin.
Patent GB-604393-A (GB)
Title: Pulse amplitude selective system
IPC: H04N5/10
Filed: 1945-10-26
Abstract: 604,393. Pulse discriminating circuits STANDARD TELEPHONES & CABLES, Ltd. (Federal Telephone & Radio Corporation). Oct. 26, 1945, No. 28425. [A, Specification was laid open to inspection under Sect. 91 of the Acts, Feb. 28, 1947.] [Class 40 (vi)] In a circuit for discriminating between wanted and unwanted pulses where the wanted pulses are of greater amplitude, one edge of the unwanted pulse is distorted and pulses are derived from this edge and the corresponding edge of the wanted pulse, the distortion rendering the first derived pulse of less amplitude than the pulse derived from the wanted pulse, the derived pulses being clipped to produce only an output pulse corresponding to the wanted pulse. In one embodiment, Figs. 1 and 2, pulse trains A, B and C, of which B is the wanted train, are passed through a clipper 4 to remove the C pulses and thence to valve 8 biassed to the level 7, the A pulses rendering it conducting to discharge capacitor 9. The output pulse from valve 8 after passing through inverter 14 takes the shape of pulse 10 and is fed with the output from clipper 4 to the mixer 15, the resulting pulses 18, B being differentiated in stage 26 to produce pulses 21, 22 and 23, 24. These are clipped at level 27a to produce pulses 28, 29 which are further differentiated to produce pulses 30, 31 and 32, 33. Clipping at level 34 produces pulses 35 corresponding to the . leading edge of pulse B. To derive pulses corresponding to the trailing edge, the pulses 22, 24 are clipped at level 37 and further differentiated and clipped. The process may be repeated if the slope of the derived undesired pulses is too steep. In a modification, Fig. 3, the A and B pulses are applied to a clipper 38, the negative-going output pulse being distorted and delayed in device 43 so that when applied to mixing valve 45, the A pulse is distorted at the trailing edge. After passing through a differentiating stage 55 and clipping stage 57, the process is repeated in stages 58, 64 to produce the desired pulse. In a further modification, Fig. 5 (not shown), the pulse from clipper 38 is delayed and applied to a resistor-capacitor network, the distorted pulse being mixed with the A and B pulses to produce, after differentiation and clipping, the desired pulse. Specification 602,059 is referred to.
Patent GB-363717-A (GB)
Title: Improvements in or relating to electrical condensers
IPC: H01G2/00
Filed: 1930-09-23
Abstract: 363,717. Condensers. SPARKSWITHINGTON CO., Jackson, Michigan, U.S.A.-(Assignees of Seeley, S. W.; 774, Audubon Avenue, Jackson, Michigan, U.S.A.) Sept. 23, 1930, No. 28433. Convention date, Feb. 11. [Class 38 (ii).] A condenser has a central metal electrode 10 within the fibre or like tube 9 upon which the alternate f oils and dielectric strips are wound, such electrode 10 forming the means for connecting one of the foils with a terminal tag 21. The parts are so arranged that at a predetermined frequency the foils have a capacitative reactance between themselves equal and opposite to the inductive reactance of the electrode 10 in association with one of the foils. In a modification, in place of the central rod an outer circumferential tube is used. In winding the condenser the foils are made to project beyond the dielectric one foil on each edge so that after winding the edges may be bent inwards to form a surface to which can be soldered appropriate metal discs 11, 14.
Patent GB-1366481-A (GB)
Title: Units suitable for glazing or solar absorbtion
IPC: E04D3/28
Filed: 1971-07-27
Abstract: 1366481 Panel G K N SANKEY Ltd 27 July 1971 [12 June 1970] 28469/70 Headings E1B E1R and E1W [Also in Divisions B5 and F4] A panel comprises plastics sheets 10, 11 with aligned corrugations secured together at abutting troughs and crests 15, 17, at least one panel being light transmitting. The sheets are extruded and then welded, e.g. by being pressed together before solidification. Reinforcing rods of plastics or metal are inserted through the bores between the sheets, the rods being formed into a non-rectilinear shape before or after insertion. The panel is used for a roof, e.g. of a carport. The sheets may be pigmented, e.g. to form a solar absorber the lower sheet may be black and water is heated by passage between the sheets.
Patent GB-616945-A (GB)
Title: Improvements in or relating to hoists
IPC: B66D3/26
Filed: 1946-09-24
Abstract: 616,945. Chain hoists. KING, Ltd., G. W., and KING, D. M. Sept. 24, 1946, No. 28563. (Class 78 (v)] In a hoist of the kind comprising a loadcarrying chain supported about a driving sprocket which is rotated in either direction by an electric motor, one or more limit attachments is or are provided which at a predetermined point in the travel of the chain contact and effect movement of a chain guard or other movable member associated with the hoist to actuate a switch or switches so as to break the motor circuit and arrest the chain, the or each limit attachment comprising two parts connected by a pin, bolt or the like, which parts are so shaped and dimensioned that when applied to a chain link, the attachment projects outwardly from the link while fitting between the parallel side portions thereof and between the adjacent ends of the two cooperating links. Fig. 1 shows the application to a chain hoist as described in Specification 557,040. When the chain 11 reaches its limiting position in an upward or downward direction, an attachment 20 on the chain pivots one of the guards 14 outwardly so as to open a switch 19 in the circuit of the motor driving the sprocket 10. Each attachment 20 comprises parts 21, 22, Fig. 2, secured together by a threaded pin 23. Alternatively, the attachment comprises a pin provided with a central portion fitting between the sides of the link and the adjacent ends of the two cooperating links and having axially-aligned end portions of smaller cross-section on each of which is secured a collar. These collars are recessed to accommodate the adjacent ends of the two co-operating links.
Patent GB-1004369-A (GB)
Title: Improved spherical plug valve
IPC: F16K35/00
Filed: 1964-07-10
Abstract: 1,004,369. Valves. GLENS ENGINEERING WORKS (PROPRIETARY) Ltd. July 10, 1964 [Aug. 2, 1963], No. 28613/64. Heading F2V. A valve comprises a spherical plug 3 rotatable between resilient rings 4 by a handle 10 through a spindle 6. A metal ring 11 carried by the spindle has two protrusions 13 which engage recesses 14 in a non-rotatable neoprene ring 12 whereby the handle may be moved step-bystep to actuate the valve. A rubber washer 15 acts as a sealing member and as a loading for the ring 12.
Patent GB-1048138-A (GB)
Title: Improvements in or relating to heat-exchangers
Inventor: WATTEAU LEWIS GUY
IPC: F28F1/04
Filed: 1963-07-19
Abstract: 1,048,138. Finned-tube radiators for cooling liquids. SUTTON POWER UNITS Ltd. June 12, 1964 [July 19, 1963], No. 28640/63. Heading F4S. In an air cooled radiator, particularly for an internal combustion engine, the liquid to be cooled flows through a plurality of conduits 6 arranged between an inlet header 1a a return header 2, and, downstream in the cooling air flow, an outlet header 1b. The conduits are of rectangular cross-section and are arranged horizontally in four vertical rows A, B, C, D (Fig. 4, not shown). A plurality of vertical fins 7 with dimples 8 are closely spaced in the region traversed by the conduits. Any of the headers 1, 2 may have a removable side wall (not shown) to facilitate cleaning the conduits.
Patent GB-617314-A (GB)
Title: Improvements in or relating to dry-shaving apparatus
IPC: B26B19/04
Filed: 1946-09-26
Abstract: 617,314. Dry-shavers. KOBLER, W., and KOBLER, V., (trading as KOBLER & CO.). Sept. 26, 1946, No. 28817. Convention date, Oct. 31, 1945. [Class 131] In a dry shaver comprising at least two spaced, parallel cutter heads 1, 11 each having a cutter blade reciprocating within, and in the direction of the longitudinal dimension of, a guard 2, each cutter head is convexly curved in the direction of movement of the cutter. As shown the hairs at 4 are erected for easier cutting by stretching of the skin in the direction of movement of the cutter, by virtue of the curvature, and between the cutter heads at right angles to that direction. The longitudinal curvature of the cutter head may be a circular arc and the cutter heads may be, additionally, gabled transversely.
Patent GB-149875-A (GB)
Title: Improvements in dynamo-electric generator sets
IPC: F01P5/02
Filed: 1919-11-20
Abstract: 149,875. Brunot, E. G., and Chateau, E. H. F. Nov. 20, 1919. Dynamos, driving.-An internalcombustion engine having radial cylinders is arranged about a vertical axis, and a generator is placed above or below the engine and on the same axis. In addition, a fan is provided to draw air through the apparatus for cooling purposes. The rotor of the generator b is either mounted on the shaft of the engine a or on a separate shaft connected thereto, in which case one of the shafts is a continuation of the other. The engine is surmounted by a cooling-device c, and a current of air is caused by the fan d to cool the water circulating in the jackets of the cylinders of the engine. The engine may also be air-cooled and enclosed in a casing, in which case the air for cooling is drawn through orifices in the generator casing as well as through the engine casing.