baber/WOPTO huggingface dataset:
Patent GB-313911-A (GB)
IPC: G03F5/20
Filed: 1929-04-25
Abstract: 313,911. Bonnaud, P., and Jourdan, L. June 19, 1928, [Convention date]. Drawings to Specification. Photo-mechanical printing-surfaces.-In preparing rollers for continuous printing on fabrics, the screen pattern, constituted of insolubilized gelatine with a soluble under layer, and the image are transferred separately to the surface of the roller, which is coated electrolytically with a layer of copper. The negative of a screen pattern (e.g. that used in heliogravure) on gelatine silver bromide paper is developed with a pyrogallic acid developer, spread face upwards on a table bearing the roller, under which it is passed and adjusted in position by means of a scale fixed to the table. The free end is then gripped between the roller and a spring-tensioned cylinder and the roller rotated. The negative adheres to the roller, and the parts unaffected by light are dissolved out by successive treatment with tepid and hot water. Carbon paper to receive the image is sensitized with potassium bichromate and ammonia, applied to a glass plate, and dried in an oven consisting of two concentric casings, the interspace being packed with cork. The glass plates are held in racks so arranged with baffles that hot air driven in by a fan passes over the surfaces of the plates and over a layer of calcium carbide. When dry the carbon paper is removed from the glass and exposed under an unscreened positive on glass to a quartz lamp. It is then transferred to the roller as above, steam being blown on to the roller surface to cause adhesion. The unaffected parts are removed with tepid and hot water and the roller rotated in bearings in an etching bath containing iron perchloride and nitric acid. During the etching, water in measured quantity is added to the bath at intervals. If further etching is needed, the superficial parts may be protected with a varnish (e.g. Palestine bitumen ) and a second bath used. For polychrome impressions three rollers are prepared, two having a dotted screen pattern, and three positives prepared with colour screens are used.
Patent GB-548995-A (GB)
Title: Improvements in latches for doors
IPC: E05C3/14
Filed: 1941-10-07
Abstract: 548,995. Lift latches. GIBBONS, Ltd., J., and GIBBONS, F. J. J. Oct. 7, 1941, No. 12926. [Class 44] In a lift latch or like fastening in which the latch arm d has integral handle e and spindle f and has its outer end confined and guided in a staple g fast to the back plate c in which the arm is mounted, sufficient clearance is provided between the spindle end and the bearing hole h which receives it to allow the parts to be assembled by inserting the arm in the staple in an inclined position, Fig. 3, and then swinging the arm towards the back plate, the spindle entering the hole. For this purpose the spindle end may be curved to the arc of displacement, as shown, or alternatively, the spindle end may be straight and the hole h slightly oval, with its major axis at right angles to the staple. The spindle is secured by washer i and split pin j. As shown, the fastening may be operated by a second handle s, with integral spindle t, the two spindles being slotted to receive the ends of a flat connecting bar x. This bar may be anchored in one of the slots by the split pin which secures the washer. Movement of the latch may be limited by staple g alone, or additionally by a round pin m movable in a slightly larger round hole n. The latch may be locked in fastened or released position by a screw o, in arm boss p and having a reduced end q entering either of two holes r in the plate c. The screw is held captive in the boss by burring its inner end.
Patent GB-223264-A (GB)
Title: Improvements in the manufacture of rubber goods from latex
IPC: C08J5/02
Filed: 1923-05-15
Abstract: 223,264. Loomis, C. C., and Stump, H. E. May 15, 1923. Coating processes. - Indiarubber latex is first vulcanized and is then partially coagulated by the regulated use of coagulants to produce a viscous paste of cheese-like consistency. This paste is applied to fabrics &c. and coagulation is completed by drying or pressing, during or after such application. The latex may be vulcanized at 13o-140‹ C. with the addition of 3-10 per cent of sulphur. To produce the partial coagulation, the protein is first converted into gel by means of formaldehyde, tannic acid, or a metallic salt, and the rubber is then agglomerated by means of an acid or a further addition of a salt. For example, to 100 c.c.s. of vulcanized latex may be added 10 c.c.s. of a 10 per cent solution of zinc acetate, followed by 1 c.c. of ¢ per cent solution of zinc acetate, followed by 1 c.c. of ¢ per cent solution of acetic acid. Alternatively, 32-34 c.c.s. of a 10 per cent solution of aluminium sulphate may be added to 100 c.c.s. of the latex. Protective colloids such as glue, albumen, casein, soaps, saponin, tannic acid &c. may be added to the vulcanized latex to prevent too rapid coagulation. Filling and colouring agents may be added to the latex before vulcanization. Specifications 193,451 and 208,235, [both in Class 70, Indiarubber &c.], are referred to.
Patent GB-1115992-A (GB)
Title: Improvements in or relating to n-piperidino-alkoxyacetophenones
Inventor: LAFON VICTOR
IPC: C07D295/108
Filed: 1965-03-26
Abstract: Novel N - piperidino - alkoxyacetophenones of the general formula <FORM:1115992/C2/1> in which R and R1 are H or C1- 4 alkoxy, R2 is C1- 4 alkoxy, and R3 is H or C1- 4 alkyl and their non-toxic addition salts are prepared by reacting piperidine or 4-methyl piperidine with the alkoxy-substituted acetophenone, optionally chlorinated in the acetyl group, in acetone, separating the precipitate thus formed by filtration, evaporating the filtrate, and, if required, reacting the product with an acid to precipitate an acid addition salt.  In examples, 2,4 - dimethoxyacetophenone and 2,4,6 - trimethoxy (chloroaceto)phenone are used as starting materials, and the salts formed are oxalates.ALSO:Pharmaceutical preparations having antispasmodic, analgesic and ataroxic activity comprise compounds of the formula.  <FORM:1115992/A5-A6/1> in which R and R1 are H or C1-4 alkoxy, R2 is C1-4 alkoxy and R3 is H or C1-4 alkyl and their non-toxic addition salts (see Division C2) and a carrier, preferably in a form adepted to oral administration.  These compounds also potentialise barbituric sedation, e.g. when given buccally or by intraperitoneal administration.
Patent GB-412743-A (GB)
Title: Improvements in or relating to radio receiving sets
IPC: H04B1/20
Filed: 1933-05-04
Abstract: 412,743. Valve circuits. GENERAL ELECTRIC CO., Ltd., Magnet House, Kingway, London, and SMYTH, C. N., c/o General Electric Co., Wembley, Middlesex. May 4, 1933, Nos. 13020 and 31218. [Class 40 (v).] A wireless receiver is adapted to act as a gramophone reproducer by causing a valve forming an essential part of the set to oscillate or change its frequency of oscillation, the oscillations being modulated by a pick-up of the type in which the output contains no frequencies higher than those imposed on it, i.e. the pick-up is not fed with an alternating voltage. As applied to a "straight" set, the high-frequency amplifier 1, Fig. 1, is caused to oscillate by completing a feed-back path 4 by switch 3. The pick-up is connected over switch 5 and switch 2 is opened. If necessary, the bias applied to the amplifier 6 may be varied to produce modulation. As applied to a superheterodyne receiver, the intermediate frequency generator 1, Fig. 2, is caused to oscillate at the intermediate frequency by replacing feed-back path 4 by path 41 and the pick-up signals replace the radio signals. Preferably the valve 1 is a heptode, Fig. 3, in which the grids 3, 4 are coupled for producing oscillations and the grid 9 is the control grid. By opening switches 22, 23 the valve 1 may be made to oscillate at the intermediate frequency, the pick-up signals entering over switch 10 and modulating the oscillations which pass through the intermediate frequency amplifier. Switches 22, 29 are wave-change switches. A damping resistance 13 prevents the remainder of the set being overloaded when the pick-up is operating. Specification 373,973 is referred to. According to the second Provisional Specification a separate local oscillator may be used.
Patent GB-939503-A (GB)
Title: Improvements relating to apparatus for manufacturing mould inserts or chill hoods for use in casting
IPC: B22D7/10
Filed: 1962-04-05
Abstract: 939,503. Coating and lining moulds and cores. HUTTENWERK OBERHAUSEN A.G. April 5, 1962 [June 23, 1961], No. 13177/62. Class 83 (1). A frame for use in lining the head of an ingot mould &c., comprises shaped plates 1 mounted on a rectangular frame 2 which can be placed on top of the mould and on which the plates are extensible and collapsible towards and away from the surface of the mould. Lateral side walls 5 supported by rods 6 are associated with the walls 1 and may be collapsed therebetween for removal from the mould. Each wall may be in two sections connected by screws so that its length may be adjusted.
Patent GB-745046-A (GB)
Title: Improvements relating to thermionic cathodes and to electric discharge lamps using the same
Inventor: SERGEANT GEOFFREY
IPC: H01J1/142
Filed: 1952-05-23
Abstract: Barium-strontium orthozirconate is prepared by precipitating barium and strontium carbonates on to zirconium oxide and igniting.  A solution of barium nitrate and strontium nitrate and a solution of sodium carbonate in distilled water are heated to 80-85 DEG C., small quantities of each solution are interchanged and the solutions filtered.  Zirconium oxide is added to the filtrate of the nitrate solution, both solutions are reheated to 80-85 DEG C. and the carbonate solution slowly added to nitrate solution.  The mixture is filtered, washed, dried, heated to about 900 DEG C. under reduced pressure and allowed to cool.  The sodium carbonate solution can be replaced by an ammonium carbonate solution which is heated to 35 DEG C.
Patent GB-540997-A (GB)
Title: Improvements in clothes wringers
IPC: D06F45/06
Filed: 1940-08-19
Abstract: 540,997. Machinery guards. BRITISH THOMSON-HOUSTON CO., Ltd. Aug. 19, 1940, No. 13196. Convention date, Aug. 19, 1939. [Class 80 (iv)] [Also in Group VIII] In wringers of the type having a control bar carrying one of the rolls and adapted to be rocked to make cam engagement with pressure members whereby the rolls are pressed together, as described generally in Specification 527,482, [Group VIII], the control bar is actuated through a manually operable lever pivoted thereon and having a lost motion connection therewith, such lost motion permitting the lever to act against a fulcrum and effect substantial dis-engagement of the cam surfaces before it acts to move the control bar to release position thereby rendering such movement easy for emergency action. As shown, the lever comprises a casing 77 loosely embracing and mounted on pivots 79 at opposite ends of the control bar 76 in which the spindle 73 of the upper roll 64 is mounted, the control bar being in its operative position with rolls 97 mounted thereon engaging cam surfaces 99 in pressure members 86 under spring action whereby the rolls are passed together. To release the pressure the lever 77 is pushed over, projections 100 thereon acting on fulcrum pins 101 to force the rolls 97 off the cam surfaces 99 before the lever contacts with the control bar to move it to central inoperative position. In this movement one arm 102 of the control bar 76 actuates through member 53 a slide 51 to dis-engage the drive to the rolls.
Patent GB-669067-A (GB)
Title: Improvements in and relating to electric refrigerator control devices
IPC: F25B49/04
Filed: 1949-05-18
Abstract: 669,067. Thermal switches. BRITISH THOMSON-HOUSTON CO., Ltd. May 18, 1949. [May 28, 1948] No. 13273/49. Class 38 (v). A control switch for a refrigerator and similar to that of Specification 560,432 has a normal open position and an abnormal open position requiring greater movement of the bellows 12 to close the contacts, thereby allowing for defrosting. The operating lever 11 pivoted at 11a, has an extension 28 engaging a ratchet wheel 25 loosely mounted on a pin 16 on which the contact-carrying arm 13 is fixed. Successive movements of the lever 11 cause counterclockwise rotation of wheel 25 and also of a member 26 secured thereto. This member co-operates with an arm 29 pivoted at 30 in such a way that it normally occupies the Fig. 3 position. On operation of the arm 13, however, the arm 29 is swung counter-clockwise by a projection 34 on an extension 14 of the arm, so that the end 32 of the arm 29 engages the periphery of the member 26. Normally, therefore, the movement of arm 13 is limited, but after a predetermined number of operations, the member 26 is moved so that one or other of two depressions 27 is opposite the end 32 of arm 29, thereby permitting the abnormal movement of arm 13. The necessary closing movement of the bellows 12 is additionally increased by a spring 35 which resists movement of the lever 11.
Patent GB-132853-A (GB)
IPC: E21C33/02
Abstract: 132,853. Rimmer, G. Sept. 21,1918. Sliding vehicles.-A sled S for transporting a coal-cutting machine M has flanged semi-circular skids F. The machine is moved on to or off the sled by attaching the usual haulage chain C to anchorages 1, 2 hauling the machine along the chain as in the cutting operation. The sled is also moved by this chain, which is then attached to a stationary anchorage, after, if necessary, being passed over a pulley P.
Patent GB-132925-A (GB)
IPC: A61B1/307
Abstract: 132,925. Rimmer, M. C. Nov. 4, 1918. Optical instruments.-In urethroscopes and similar instruments having a lens in the cap for direct observation, an operating attachment is fitted at the side of the lens tube in such a way that an axial instrument can be manipulated laterally without interfering with the direct line of vision. Fig. 1 shows a urethrescope having a tube A and air chamber B of known form, and fitted with an electric lamp H<1> and connexions M<1> as usual. To the air-chamber is plugged a sleeve C which carries the eyepiece D and lens E. In the lateral wall of the sleeve there is a slot communicating with a parallel double slotted tube, shown in sectional plan in Fig. 8, in which works the piston T. The operating handle G<1> passes through the piston and carries a head G to which an instrument such as the knife F' can be attached. The handle is formed with a ball U which works in a socket in the piston. The instrument F<1> can thus be moved longitudinally by allowing the piston to reciprocate in its cylinder; at the same time it is capable of a " wobbling " movement in any direction by rocking the handle on its ball pivot. A spring Y ordinarily keeps the instrument within the sheath A. Instead of the piston and cylinder, a simple rubber cap S may be used, as seen in Fig. 7. In each case the parts are airtight, so that the urethra may be inflated in the usual manner before examination. Fig. 12 shows an attachment for introducing a filiform bougie. The tube Z replaces the tube C, and the bougie 14 is passed down the lateral branch 16 which is packed by a gland and washer 17. After insertion, the gland is removed and the urethroseope withdrawn, leaving the bougie in position, and dilating sounds may be employed in the usual manner. The invention is stated to be applicable to bronchoscopes, sygmoidoscopes, µsophagoscopes, auriscopes, and nasal specula.
Patent GB-386849-A (GB)
Title: Improvements in and relating to television systems
IPC: H04N7/10
Filed: 1932-05-09
Abstract: 386,849. Television. LOEWE, S., 10, Wiesenweg, Steglitz, and ARDENNE, M. VON, 19, Jungfernstieg, Lichterfelde, both in Berlin. May 9, 1932, No. 13301. Convention date, May 9, 1931. [Classes 40 (iii) and 40 (v).] In a television system wherein the picture &c. is scanned line by line, the lower frequency band resulting from the image repetition is transmitted along wires 3, while the higher frequency band resulting from the line scanning and picture details is transmitted over a high-frequency carrier wave, preferably an ultra-short wave. In the arrangement shown in Fig. 3, the higher frequencies are conveyed by lines 6 from the television transmitter 4 to the high-frequency transmitter 1, while corresponding elements are arranged at the receiver, namely, the high-frequency receiver 2, the television receiver 5, and connecting lines 7 therebetween. A line 3, preferably with an earth return, serves for the transmission of the potential which controls the image frequency, e.g. a saw-tooth or tilting potential applied to one pair of plates of a Braun tube, a high resistance 14 or equivalent safety device being inserted to avoid accidents due to short-circuiting &c., particularly in the case of a number of receivers being supplied. The system may also include a telephone transmitter 8 and receiver 9, the sound frequencies being modulated on to the high-frequency carrier wave, preferably with a suitable filter arranged before the transmitter 1. The receiver includes a high-frequency amplifier for dealing with the picture frequencies and a low frequency amplifier for dealing with the sound and image control frequencies, an additional filter preferably being inserted before the loud-speaker. In a modified arrangement, Fig. 2, lines 10, 11 are arranged at the transmitter for the separate modulation on to the carrier wave of the line frequency band and picture currents, corresponding lines 12, 13 being provided at the receiver. Specification 383,880 is referred to.
Patent GB-328790-A (GB)
Title: Improvements in trawling gears
IPC: A01K73/02
Filed: 1929-04-29
Abstract: 328,790. V. D., Ltd. March 9, 1929, [Convention date]. Addition to 278,708. Trawling-gear.-The gear claimed in the parent Specification is modified by connecting the headrope by a cable F to a point on a main cable G which passes from the ground-rope to the shear board. A third cable F<1> may be added to connect the side-rope H of the net to the same point of the main cable. The ropes are prevented from twisting by the use of swivels or by oppositely twisting the strands of the cables F, G, or by using cables which have no tendency to twist under tension. The vertical extension of the wing of the net may be limited by a cable A B which is of such length as will permit the desired bulging. of the wing.
Patent GB-1530990-A (GB)
Title: Electrostatically spun tubular product
IPC: A61L27/18
Filed: 1975-07-25
Abstract: 1530990 Fibrous tubes; method of forming IMPERIAL CHEMICAL INDUSTRIES Ltd 25 July 1975 [5 Aug 1974] 13321/78 Divided out of 1527592 Heading F2P A tube comprises polyurethane or fluorinated hydrocarbon fibres produced by electrostatic spinning. It may be used as a prosthetic device and is preferably formed by collecting the fibres on a rotating charged former. Tubes spun from solution may be strong enough without further treatment. Those spun from dispersions may be sintered. Dispersed polymers tend to produce spin to discrete particles. Hence one additional, fibre forming organic polymer is added to increase the viscosity of the dispersion and bond the particles together in the spun mat. Polyethylene oxide polyacrylmide polyvinyl pyrrolidone, polyvinyl alcohol, polystyrene and polymethylmethacrylate are specified. The fibre forming solution or dispersion may contain zirconium oxide, titanium oxide, chromic oxide, magnesium oxide or hydroxide or calcium oxide or hydroxide to render the fibres wettable. The fibres may have a diameter of 0À1 to 25 microns. Fibres of different diameter or composition may be applied from separate spinnerets in turn to form a non-uniform mat or together to form a uniform mat. The tube may have a thickness of 25 to 1500 microns, a pore size of 0À001 to 500 microns and a porosity as collected of 55 to 95%. In Example 1 polyurethane fibres were deposited upon a rotating metal tube 10 having a flexable foam sleeve 11 to form a 2 mm. thick tube which was peeled from the foam. In Example 3 PTFE fibres were deposited upon an aluminium mandrel, a reinforcing helix of nickelchrome wire wound on, a second layer of PTFE fibres applied, the tube sintered and the aluminium mandrel dissolved in NaOH. In Example 4 a glass helix was used.
Patent GB-593413-A (GB)
Title: Improvements in or relating to fluid seal
IPC: F16J15/36
Filed: 1944-07-12
Abstract: 593,413. 3tuffing-box substitutes. CRANE PACKING CO. July 12, 1944, No. 13323. Convention date, July 26, 1943. [Class 122 (v)] A fluid seal comprises a flexible and resilient member having a sleeve portion 15 placed in a strained condition on the shaft and a flanged portion 17 connected to it by a yielding fold and engaging a fractional contact disc 14 ; a sleeve 22 extends over the disc and flange and engages the disc, e.g. by ribs and grooves, and provides an extensible driving connection between the disc and a ring 18 on the tightened portion, e.g. by projections 21 on the ring engaging slots in the sleeve. The sleeve 22 is shouldered to press a thin disc 26 against the flange 17 of the flexible member, and is itself subject to the pressure of a spring 30 abutting on a ring 31 engaging a shoulder 29 on the shaft. The frictional disc 14 may have an extension next the shaft to support the flange 17 of the flexible seal. The sleeve 22 may be formed with a flange for abutment of the spring 30, and the ring 31 may be supported from the shaft by a groove and snap ring. The ring 18 may be held between shoulders in the sleeve portion 15.
Patent GB-410610-A (GB)
Title: Improvements in and relating to vacuum type filling machines
IPC: B67C3/16
Filed: 1933-05-08
Abstract: 410,610. Bottling milk. ALBRO FILLERS & ENGINEERING CO., Ltd., 34, Holloway Road, London. May 8, 1933, No. 13335. Convention date May 31, 1932. [Class 125 (ii).] Relates to vacuum or suction filling machines for bottles &c. of the type described in Specifications 174,129, 205,003, and 277,393, [all in Class 125 (ii)]. According to the invention the leak passage 16 in the filling- nozzle A communicates with a chamber 17 and an annular space 18 to provide a path for air which is substantially larger than that of the leak 16 so that the velocity of the incoming air is retarded and the surface of the liquid is not disturbed. The air is also directed in a helical path towards the surface of the liquid, due to the curvature of the walls of the expansive chambers. A rubber &c. pad D is provided for sealing the mouth of the bottle &c. during the filling operation, the central orifice of the pad being of sufficient diameter to allow for the space 18. The nozzle has an annular portion which engages the bottle &c., an outer depending flange B, and a central boss C having a straight vacuum passage 15 and liquid passage 13. Liquid is supplied through the passages 10, 12.