baber/WOPTO huggingface dataset:
Patent GB-1048171-A (GB)
Title: Dust collecting for vacuum cleaning machines
IPC: A47L9/14
Filed: 1965-01-20
Abstract: 1,048,171. Vacuum-cleaner dust bags. E. FABER. R. D. HAHN. H. HAHN and E. WORWAG, [trading as MAUZ & PFEIFFER]. Jan. 20, 1965 March 4, 1964], No. 2422/65. Heading B1T. The externally mounted paper dust collecting bag 2 of a vacuum cleaner is protected and supported in use by an outer bag, formed in two symmetrical halves 3a, 3b which are hinged to the cleaner connection 5 and are held closed together by closure 6, 7. Each bag half comprises a wire frame or stirrup and may have a covering web of permeable fabric. In Figs 5--7 (not shown) one bag half has flaps on two sides and one end which fold over the paper bag before the other bag half is secured, whereby the paper bag is covered at the joint between the bag halves to avoid spillage if the paper bag bursts.
Patent GB-769732-A (GB)
Title: Improvements relating to paper or like cellulosic webs of improved dry strength
IPC: D21H17/45
Filed: 1955-01-27
Abstract: Polymers containing quarternary ammonium groups are prepared either by treating a preformed polymer to introduce quaternary groups or by copolymerizing a quaternary monomer with one or more compounds copolymerizable therewith.  In examples: (2) chlormethylated polystyrene is quaternized with trimethylamine; (3) and (4) poly-p-dimethylaminostyrene is quaternized with benzyl chloride and allyl bromide; (5) (3-acrylaminodopropyl) benzyl dimethyl ammonium chloride is copolymerized with acrylamide and methyl acrylate in the presence of ammonium persulphate in an aqueous medium of pH 6.5; (6) polyacrylamide is quaternized with the reaction product of formaldehyde and trimethyl propionamido ammonium iodide; (8) (3-acrylamidopropyl) benzyl dimethyl ammonium chloride is copolymerized with acrylic acid and acrylamide in the presence of ammonium persulphate in an aqueous medium containing isopropyl alcohol; (10) (3-acrylamidopropyl) benzyl dimethyl ammonium chloride is copolymerized with acrylamide or methylolacrylamide, alone or in the presence of acrylonitrile or ethyl acrylate.  In Example (9) ethylene oxide is reacted with N,N1-dimethyl-p,p1-methylenebisaniline and the reaction product treated with 1,3-dibromopropane, a linear polymer being obtained containing recurring units of the formula <FORM:0769732/IV(a)/1> The polymeric products are employed for improving the dry strength of paper.  Specifications 623,355, 637,227, [Group VIII], 709,979, and 711,404, [Group IV (b)], are referred to.ALSO:In the production of a synthetic resin for use in paper manufacture (Example 5) (3-acrylamidopropyl) benzyl dimethyl ammonium chloride was prepared by stirring benzyl chloride into N-[3-(dimethylamino)propyl]acrylamide in benzene in a flask with a reflux condenser at 50 DEG  C. and the reaction product cooled, washed in benzene and air dried.  In another example (Example 6) 3-(dimethylamino)-propionamide was quaternarized by the use of methyl iodide, 0.1 mol. of the product was reacted with 0.1 mol. of formaldehyde and added to a 10 per cent solution containing 1 mol. of polymerized acrylamide, the mixture adjusted to pH6, heated to 185 DEG  F. for 45 minutes and cooled.  Example 7 discloses the production of a linear protein polypeptide by dispersing 20 g. of hide glue in 180 g. of hot water and adding 10 g. of a 50 per cent solution of ureidopropyl-bis-(2-hydroxyethyl) glycidyl ammonium chloride and heating at 60 DEG  C. for 24 hours.
Patent GB-442468-A (GB)
Title: Improvements in or relating to the manufacture of bearings
IPC: B21K1/04
Filed: 1935-01-25
Abstract: 442,468. Making bearings. GLACIER METAL CO., Ltd., and BATE, J., 368, Ealing Road, Alperton, Middlesex. Jan. 25, 1935, No. 2493. [Classes 83 (ii) and 83 (iv)] Stamping.-In flanging half bearing shells 7 the shell is positioned by side gauges between a convex former 2 on a sliding shaft 3 and a concave faced plunger 1. On depression of the plunger and the former the shell is forced between die plates 4 to bend the flange. The plunger and the former are curved to the shape of the shell and the die plates are flared to allow the horns of the shell to make the first contact with the die and for the flanging to proceed to the apex of the flange. The shell is ejected by springs &c. The distance between the die plates is slightly less than the width of the plunger plus twice the thickness of the shell to facilitate the flow of metal. The shell may be bent to U-shape in a separate machine and may include more than a semicircle, the excess metal being removed after flanging.
Patent GB-547437-A (GB)
Title: Improvements in or relating to recording apparatus for statistical machines
Filed: 1941-02-26
Abstract: 547,437. Photographic recording apparatus for statistical machines. BRITISH TABULATING MACHINE CO., Ltd. Feb. 26, 1941, No. 2640. Convention date, Feb. 29, 1940. [Class 98 (i)] Apparatus for photographically recording a succession of rows of characters, each row being the data on a record card or registered in an accumulator of the machine, and each character being determined by the timing of an impulse transmitted to the recorder, comprises a member 1 rotating in timed relation with the cycle of the machine and bearing sets of characters disposed in parallel lines in the direction of motion of the member, means for photographing a character from each set so as to form a row of images and a shutter 13 for each set, each shutter being operated by a timed impulse to expose the corresponding character of the set. As shown, the member 1 consists of a transparent drum carrying triplicated sets of characters separated by opaque portions 2, and it is rotated in timed relation with the accounting machine so that it makes one-third of a revolution for each machine cycle. In the case of alphabetical characters each set extends in one line round the drum, which makes a complete revolution for one machine cycle. The characters are illuminated by a system comprising a tubular lamp 6 and cylindrical lenses 8, forming a beam which extends across all the sets and passes through a rectangular aperture 10 for each set in a member 11 to the film camera 3, the latter having means to feed the film step by step in timed relation to the cycle of the machine. The apertures 10 are controlled by sliding shutters 13 each of which is moved by a spring 15 to move an aperture 20 in it across the aperture 10 when a pivoted latch 17 which holds it is released. The latch 17 is operated by the armature of an electromagnet 21 through a link 22, the magnet being energized by a timed current impulse from the machine. To ensure exact timing, the latches are held against operation by their magnets by means of a bar 27 which is oscillated by an eccentric 25 once in each interval between two impulses, and so allows the energized magnet to operate the corresponding latch. Whilst an opaque portion of the drum is passing across the light beam the shutters 13 are returned by means of a comb 31 which is reciprocated by an arm 33. For high speeds of operation, an optical device such as described in Specification 16201/13, [Class 97 (i)], may be employed to render the image projected to the camera stationary. Specification 378,835, [Group XIX], also is referred to.
Patent GB-177309-A (GB)
Title: Improved device for transporting or storing gramophone and like disc records
IPC: A47B81/06
Filed: 1921-01-20
Abstract: 177,309. Cotton, A. F. R. Jan. 20, 1921. Packing gramophone records.-Gramophone and like diso records are held clamped between a felt covered base plate e formed with a projecting stem c adapted to pass through the central holes in the records, and a padded cover plate f held in place by means of a nut which may have a quick release provision, or by a threaded boss f<1> formed on the plate. The cover plate may have lugs f<11> to facilitate assembly. The holding device may be mounted in a box as shown, or in the lid or a drawer of a gramophone cabinet, or the base and cover plates may be formed as a separate holder adapted to be enclosed in a water-proof or other cover. When in a case, the lid b may have a bell-mouthed thimble c' bearing on the end of the stem, and may also have one or more coiled or plate springs adapted to press on the records. The case may be lined with felt &c.. and the separate base plate may be dispensed with.
Patent GB-949527-A (GB)
Title: Improvements in or relating to the clamping of stacks of core laminations for dynamoelectrical machines
IPC: H02K1/16
Filed: 1962-01-24
Abstract: 949,527. Core constructions. MASCHINENFABRIK OERLIKON. Jan. 24,1962 [Feb. 15, 1961], No. 2691/62. Heading H2A. An arrangement for clamping a stack of core laminations 1, Fig. 5, for a dynamo-electric machine comprises end segments 4, bolts 2 which pass through the end segments externally of the stack, supports 7 on the segments, and, at each end, at least one straining device 8 which applies a force C to balance the reaction B produced by the laminations when the bolts are tightened. As described, the arrangement is applied to a stator cone and the straining device 8 comprises a ring, a second ring 9 being provided to exert an outward force. If the segments 4 abut each other in the form of an arch, this second ring may be. omitted. The supports 7 may be, as shown, in the form projections on the end segments, or alternatively in a modification, Fig. 10, the end segments 41 may be suitably shaped to co-operate with the rings 8, 9 and also to support the coil winding 10 attached to sliding blocks 12. Cooling passages may be provided through the end members and stack, Fig. 9 (not shown).
Patent GB-289927-A (GB)
Title: Improvements in connection with the heating and cooling of buildings
IPC: F24D3/16
Filed: 1927-01-31
Abstract: 289,927. Musgrave, J. L., and Crittall & Co., Ltd., R. Jan. 31, 1927. Heating and cooling buildings.-Heating or cooling pipes B pass through a hollow body A of V-shape, closed at the ends, and a heat distributor b<1>, in the form of short lengths of copper tube, is provided. A cover a' of insulating material or metal completes the casing. Alternatively the heat distributor may be in the form of a bent metal plate. The casing A may be circular, and the pipe B may be supported in it near the bottom by a plate a<2> which also distributes the heat. The casing may be filled with non-conducting material.
Patent GB-437233-A (GB)
Title: Improvements relating to colouring and hardening steel
IPC: C21D9/52
Filed: 1934-01-26
Abstract: 437,233. Electric resistance furnaces. HEIDE, H. C., 2, Broad Street Buildings, Liverpool Street, London.-(Stargardter, A. R. ; 15, West 1st Street, Brookline, Massachusetts, U.S.A.) Jan. 26, 1934, Nos. 2744/34,8483/34, and 2586/35. [Class 39 (iii)] [See also Groups II and XII] Partial combustion of a mixture of air and illuminating gas is effected in a chamber having an interior flue formed by a pair of porcelain shell 54, rectangular in cross-section and arranged end-to-end, the space between the shells and the walls of the chamber being filled with material such as asbestos in which may be embedded spacing members 56. The shells 54 are exteriorly threaded and resistance wire is wound in the threads so that the chamber can be heated to above the ignition temperature of the gas mixture. The gas mixture is fed to the chamber by a mixer 53 comprising a gas pipe 59 leading into a chamber having peripheral air ports 60, a ring 61 being provided so that the size of the ports may be adjusted. The nature of the atmosphere passing from the combustion chamber can be varied by opening or closing the air ports 60 and also by discharging a controlled amount of burning gas through an outlet passage 63 formed between the shells 54 and provided with a slidable damper 65.
Patent GB-549770-A (GB)
Title: Improvements in scanning radio receivers
IPC: H03J7/22
Filed: 1941-02-28
Abstract: 549,770. Wireless receiving systems. WHITE, S. Y. Feb. 28, 1941, No. 2755. Convention date, Feb. 29, 1940. [Class 40 (v)] A radio receiver system includes a thermionic reactance for automatically and continuously tuning a receiver over a range of frequencies, a director device, and a tone operated relay for conditioning the director device to render the continuous tuning ineffective in response to the reception of: a carrier frequency within the range and identified: by modulation with a predetermined tone. Fig. 2 shows the invention applied to a superheterodyne receiver in which a part of the output of the I.F. amplifier is fedby lead 23 to a valve VT1 in the output of which are circuits TC1, TC2 tuned to frequencies on either side of the intermediate frequency so that the differential. voltage from load resistors R1, R2 of diodes VT2 indicates, both by sign and amplitude, departures from tuning. This voltage is fed by lead 22 to the grid of a valve VT4 arranged as a reactance in the circuit of a beat oscillator VT3 supplying the mixer 5, and varies the oscillator frequency to correct departures from tuning. A low-frequency scanning oscillator VT5, VT6 also supplies to lead 22 a voltage which continuously: sweeps the oscillator frequency over about 1 per cent of its range to facilitate finding a station. The scanning oscillator voltage is however small and is entirely swamped by the voltage from VT2 on receipt of a signal and so the tuning remains fixed. On stoppage of the signal, the scanning is resumed. In some cases the scanning oscillator can be omitted and by closing a switch SW2 a kind of random scanning is performed by the fluctuating noise voltages in the output of the audio-frequency amplifier VT7. The circuit is arranged so as only to lock in to a carrier which is modulated by a definite tone, by the provision of a valve VT10 which normally conducts and so blocks VT1 by lowering the screen grid voltage. On receipt of a signal modulated by the correct tone, energy is taken. from the audio stage VT7 and selected by tone filter TC3, TC4 where, after amplification at VT8, it is rectified at 18, 19 to provide a negative voltage which is applied to the grid' of the valve VT10. This blocks VT10 and so unblocks VT1, allowing the circuit to lock on to the selected carrier: Specification 549,769 is referred to.
Patent GB-193387-A (GB)
Title: Improvements in thermionic generators
IPC: H03B5/10
Filed: 1923-01-30
Abstract: 193,387. Ges. f³r Drahtlose Telegraphie. Feb. 14, 1922, [Convention date]. Thermionic generators; keying and modulating systems and apparatus.-A negative potential is applied to the grid of a thermionic generator by means of a resistance R, shunted by a condenser C, and inserted in the plate circuit between the cathode F and the negative pole of the high-tension supply S. The value of the resistance R may be varied by keying, or through a microphone.
Patent GB-1402482-A (GB)
Title: Electro-optical stores
IPC: G11B7/2433
Filed: 1973-01-19
Abstract: 1402482 Modulating light; electro-optic storage SIEMENS AG 19 Jan 1973 [1 March 1972] 2805/73 Headings H4F and H3B An electro-optic store comprises a substrate 1 on which is epitaxially grown a layer 2 of ferro-electric bismuth titanate having its surface parallel to the a or b axis and inclined towards the other two axes. As particularly described, substrate 1 is of strontium or lead titanate (non-ferro-electric perovskites) or ferro-electric lead titanate, with a (III) surface, overlaid with a 5-10 nm. transparent gold or platinum (III) layer 11. The layer 2 has a (028) surface orientation in this case, although a (108) orientation is also mentioned. Transparent photo-conductor and electrical conductor layers 9 and 4 are provided. A polarizer 5 is disposed with its prefered axis parallel with one of the main axes of the indicatrix of layer 2 and an analyser 6 is disposed to prevent the passage of a recording light beam 7 therethrough when a recording voltage 10 is applied between layers 11 and 4. Subsequently on opposite polarity voltage 13 may be applied, rotating the axes of the refractive index indicatrix by 15 degrees in the c-a plane, and the stored image read-out by a portion 8 of a beam 7 transmitted by layer 2 and polarizers 5, 6. Since the field is not parallel to the c-axis, a higher field is necessary, bit it is said that the increased contrast from differently polarized areas of layer 2 (compared with the prior art devices, in which layer 2 has a c (001) face) is of more importance, e.g. for halographic applications, using phase contrast.
Patent GB-438922-A (GB)
Title: Anti-skid attachment for shoes
IPC: A43C15/16
Filed: 1935-01-28
Abstract: 438,922. Anti-slipping attachments for boots and shoes. DRISCOLL, H. D., Philcade Building, Tulsa, Oklahoma, U.S.A. Jan. 28, 1935, No. 2828. Addition to 438,439. [Class 17 (ii)] An anti-skid attachment for shoe soles comprises a lazy-tongs linkage arrangement 9 provided with ground engaging means 11 adapted to be engaged at one end 12 in an attaching socket 14 in the sole and provided at the other end with a pivotal locking device 20 which actuates means to lock the tread in position on the sole. The attachment is secured by passing a T-shaped projection 13 at the front end 12 into an oval shaped socket 14 in the sole. The attachment is then turned through a right angle into alinement with the sole and a headed projection 25 on a lever 20 pivoted to the rear end is passed into a socket 26 in the sole. By turning the lever 20 the projection 25 is turned into locking engagement with the socket 20, the lever being held in this position by snapping engagement of a hole 21 therein on the head of one of the pivot joints of the linkage 9. Instead of the projection 25, an oval headed pin on which the lever 20 is pivoted to the rear of the device may be used to lock in the recess 26 at the rear end of the sole. The locking device may be provided at either end.
Patent GB-670611-A (GB)
Title: A method of, and apparatus for, automatically packing biscuits into tins and like containers
Inventor: PAGE ALFRED CORNELIUS
IPC: B65B23/10
Filed: 1949-02-02
Abstract: 670,611. Packeting-machines. WRIGHT'S BISCUITS, Ltd. April 4, 1949 [Feb. 2, 1949], No. 2847/49. Class 94(i) In a machine for packing biscuits into tins, the biscuits are fed on edge to the entrance end of a sleeve or channel 14 and are caused to push one another from behind through the sleeve or channel on to an open loading platform 15 against the resistance of a spring-loaded, slidable stop member 17 which supports the biscuits on edge as they move across the platform. When a row of biscuits has been assembled a reciprocating pusher 19 is operated to move the row on to a tray 20 and the operation repeated until the tray is full, the tray being then moved into a tin 23 carried by an endless step-by-step conveyer 21 which lowers the tin by an amount equal to the height of the biscuits after each charging operation. A shutter 22 is moved down to engage the rear edges of the flow of biscuits and prevent its withdrawal when the tray is moved out of the tin. As the pusher 19 moves across the exit end of the sleeve or channel it interrupts the feed of biscuits on to the loading platform, and the arrangement is such that on the return movement of the pusher the stop is moved across the platform to engage the leading biscuit before the exit end of the sleeve or channel is completely opened. The movement of the stop to a completely retracted position' when a row of biscuits has been fed on to the platform may be arranged to close a switch or operate mechanical trip means to cause automatic activation of the pusher. In order to prevent the charging tray fouling biscuits which have already been packed into the tin it is moved over a resiliently-mounted guide which slopes upwardly over the packed biscuits and is depressed against the action of a spring-loaded roller by the weight of the charged tray. The tins may be mounted in the pockets of the conveyer 21 by adjustable spring grips 53, Fig. 6, and to facilitate the introduction of the biscuits the tins are lined with corrugated cardboard 26 having a thickness equal to that of the bead around the edge of the tin, and metal plates 27 having bent edges which dip over the bead are temporarily interposed between the cardboard and the usual grease-proof paper. The biscuits may be fed to the entrance end of the sleeve or channel over a flexible band as described in Specification 670,612. In modifications, the charging tray is dispensed with and the rows of biscuits are fed directly into the tin by the pusher 19 or assembled at an intermediate station by the pusher which then makes a longer stroke to move the assembly into the tin. Several sleeves or channels may be used to feed the biscuits on to the loading platform. Specification 670,613 also is referred to.
Patent GB-1458792-A (GB)
Title: System of test coils and method for determining properties of  test pieces
IPC: G01N27/72
Filed: 1975-01-22
Abstract: 1458792 Electromagnetic test coil systems  F FORSTER 22 Jan 1975 [10 April 1974] 2850/75 Heading G1N A test coil system for determining properties such as hardness, strength, heat treatment condition, depth of hardness of test objects includes excitation winding 16 connected in series either aiding or opposition with a primary winding 19 of a transformer 14 and receiver winding 17 in series opposition or aiding with the secondary 20 of the transformer. Transformer 14 is magnetically decoupled from windings 17, 19 and is mounted on a bracket 59, Fig. 4 of a potted assembly, the exciter winding being in the form of two series, connected windings 52, 53 to oppose the demagnetizing effect which occurs with short test pieces. The test coil 13 and transformer 14 are connected together as shown to pins 21, 22, 23, 26 of plug socket 15 for connection to test unit  11. Calibration balancing.  With no test piece 18 present constant-current generator 31 is adjusted to produce the maximum current i and the slider of potentiometer 35 is moved to its lowest stop so that there is no voltage at input 42 of difference amplifier 36. Screwed plug 63 of the transformer 14 is then rotated to vary its inductance until a zero display is shown on meter 37 indicating that the voltage across windings 17, 20 U a  and Ug are equal and opposite. Alternatively the turns of the transformer may be chosen to achieve this. Measuring.  Constant current generator 31 is adjusted to give the current for the particular test and the first test piece 18 is inserted. The slider of potentiometer 35 is moved to a setting to produce zero deflection on meter 37 and the position of the slider is read off to give the desired reading. Alternatively a reference test piece may be inserted, the slider moved to zero the meter 37 output, and then replaced by a test piece the meter reading then giving the deviation from the reference properties. A phase sensitive detector may be used instead of rectifier 34. Instead of a through coil system the coil may be wound on a ferromagnetic core which is placed on the item under test.
Patent GB-344157-A (GB)
Title: Improvements in decoration of glassware
IPC: B44C1/04
Filed: 1930-01-29
Abstract: 344,157. Ornamenting. HAIL WOOD, E. A., Beacon House, Texas Street, Morley, near Leeds. Jan. 29, 1930, No. 3020. [Class 93.] Glassware is decorated by covering the surface with paper, foil, or the like, marking out the design by means of a hot needle or wire, preferably electrically heated, and then spraying paint into the spaces formed by removing the burnt portions. The covering material may be impregnated with saltpetre or the like to facilitate burning out the design. The hot needle may be attached to one arm of a pantograph.