baber/WOPTO huggingface dataset:
Patent GB-792193-A (GB)
Title: Improvements relating to the production of salicylamide
Inventor: FRANCIS EMRYS MANLEY
Filed: 1954-08-11
Abstract: Salicylamide is prepared by reacting an ester of salicylic acid with aqueous ammonia, e.g. aqueous ammonia having a density of 0.880, by a continuous process under conditions such that oxygen is excluded, this exclusion of oxygen being maintained by virtue of the continuous operation.  The reaction may be carried out at an elevated pressure but is preferably carried out at atmospheric pressure and/or at a temperature within the range from 25 DEG  to 35 DEG  C., e.g. at about 30 DEG  C.  The ester employed in the above process may be an alkyl ester in which the alkyl group contains from 1 to 3 carbon atoms, e.g. methyl salicylate.  From 2 to 10 mols. of ammonia may be used for each mol. of ester, e.g. about 5 mols.  A small quantity of a water-soluble inorganic reducing agent such as sodium sulphite or thiosulphate may be used in the reaction mixture to prevent discolouration of the salicylamide if traces of oxygen should inadvertently enter the apparatus.  The process may be conveniently carried out in an apparatus in which a reaction mixture consisting of reactants and final products is circulated through a vessel by means of a pump and part of this mixture is allowed to overflow from the top of the apparatus as the ester of salicylic acid and aqueous ammonia are continuously introduced. The reaction mixture which is allowed to overflow from the apparatus contains excess aqueous ammonia, the ammonium salt of salicylamide, and by-product alcohol, and can be treated batchwise or continuously to recover salicylamide. On a continuous basis, the ammonia and alcohol are stripped off, and the aqueous solution remaining is acidified to precipitate salicylamide, e.g. carbon dioxide or hydrochloric or sulphuric acid can be used for the acidification step.  One detailed example is given in which methyl salicylate is used as the ester of salicylic acid.
Patent GB-214159-A (GB)
Title: Improved saucer for flower pots
IPC: A01G9/04
Filed: 1923-09-18
Abstract: 214,159. Zepp, G., and Feldman, H. Sept. 18, 1923. Flowers and plants, pots and receptacles for growing. -In order that there may be an open space below the flower-pot and the upper surface of the bottom plate of the pot may be in the plane of the upper edge of the saucer, inwardly directed supporting ribs or blocks v are formed in the saucer with their upper surfaces lower than the upper edge of the saucer by an amount equal to the thickness of the bottom plate c of the pot.
Patent GB-959623-A (GB)
Title: A magnetic recording and playback system
IPC: H04N5/7826
Filed: 1962-06-18
Abstract: 959,623. Magnetic tape recording; television. SONY CORPORATION. June 18,1962 [June 21, 1961], No. 23347/62. Heading G5R. A helical-wrap recorder for television signals uses a pair of revoluble heads 13a, 13b so spaced, axially and azimuthally on the shaft 30 that the resulting record has independent sets of oblique tracks 12a, 12b; the tracks 12a carry the video signals and line-synch pulses while the tracks 12b carry the frame-synch pulses. The head 13b may be of lower quality than the head 13a.
Patent GB-429255-A (GB)
Title: Improvements in and relating to electrically-tripped high-powered switches
IPC: H01H3/30
Filed: 1933-08-23
Abstract: 429,255. Electrically-tripped switches. AKT.-GES. BROWN, BOVERI, & CIE, Baden, Switzerland. Aug. 23, 1933, No. 23436. Void [Abridged as open to inspection under Sect. 91 of the Acts, July 9, 1934]. [Class 38 (v)] A quick make and break electrically-tripped water or other switch has a " make " spring c and a "break" spring d which are successively energized and then held latched by rotation of a crank disc o, either by hand or by a motor, through one revolution. The disc o has a crank and connecting rod m the lower pivoted end of which bears against the top of a tube g. An extension of the pivoted end also enters the tube g so as to be guided by it. The tube g carries a sleeve h with eyes z to receive the forked end of a bell-crank lever f, and the lower end of the tube g is pivoted to a bell-crank lever e to which the ends of the springs c and d are connected. The lever f which is connected by links i, k to the movable contacts b is latched in the position shown by a latch r. When the disc o is rotated through 180‹, the connecting rod m and tube g move downwards straining the spring c, the lever e being latched in its lowest dotted position by a latch s. Continued rotation through another 180‹ strains the spring d the upper end of which is attached to the pivoted end of the connecting rod m. The disc o is then held by a latch t. Energization of the electromagnet p releases latch r allowing spring c to pull down lever f to close the switch. Energization of electromagnet q then releases the latch s allowing spring d to raise lever e and with it tube g and lever f to open the switch.
Patent GB-583747-A (GB)
Title: Improvements relating to the production of yarn from animal or mixed animal and other fibres
IPC: D01G29/00
Filed: 1944-11-27
Abstract: Wool is lubricated, softened and conditioned for use in the production of yarn by the woollen or worsted systems, by thoroughly soaking the previously cleaned wool by immersion in an oil-in-water emulsion, removing excess liquid by squeezing or other mechanical method, drying, storing for any length of time desired, blending if required, re-steeping in water so as to restore the desired gel-water condition of the wool, and removing excess of water by mechanical means and by drying.  Instead of wool, other animal fibres or mixtures of animal fibres with other fibres may be treated.  The treatment facilitates carding and other operations.  The concentration of oil in the emulsion may be 2 parts by volume of oil, e.g. olein, to 10 parts of water. The emulsion bath may be at room temperature or may be heated.  In an example, wool in loose condition is soaked in an emulsion of oil and passed through squeezing rollers so that the wool retains about 5 per cent of oil.  The wool is dried to a water content of 16 per cent and stored.  When required for use it is re-steeped in cold water to restore the gel condition of the fibres, and it is then dried to a moisture content of 35-45 per cent. Specification 470,870 is referred to.
Patent GB-517845-A (GB)
Title: Improvements relating to radio receiving devices
IPC: H04B1/14
Filed: 1938-08-10
Abstract: 517,845. Valve circuits for wireless reception. AGA-BALTIC RADIO AKTIEBOLAG. Aug. 10, 1938, No. 23627. Convention date, Aug. 10, 1937. [Class 40 (v)] In a superheterodyne receiver in which the intermediate frequency is displaced relatively to the band-pass filter in accordance with the strength of incoming signals so as to include more of one side-band, and in which a linear detector is employed which produces distortion when working on a single side-band, the amount of displacement is limited so that the maximum frequency received on both side-bands is always greater than one-seventh of the highest frequency passed by the audio-frequency channel. Seventh and higher harmonies, which are produced by the linear detector working on a single side-band and which are stated to be the main cause of distortion, will then always be above the limit of the audio-frequency channel and will not be reproduced in the loud-speaker. In the system shown, the band-pass filter comprising coils 26-30 and condensers 27-31 passes a band of 9 kc. represented by curve A, Fig. 1, and for weak signals both side-bands up to a width of 4À5 kc. on either side of the centre line B are passed. With a stronger signal, a bias voltage produced in a diode 32, 34 and used also for automatic volume control purposes is applied over resistance 51 to a valve 47 to vary the impedance of the tuned circuit 20, 21 of the local oscillator. The values of the inductance and capacity of this tuned circuit are so calculated that with the maximum inductance or capacity effect of the valve 47 the displacement of the carrier frequency will not be beyond B<1>, Fig. 1, so that modulation frequencies up to 1 kc. corresponding to curve C will be received on both side-bands, it being assumed that the audio-frequency channel is limited, e.g., by a filter 54 ... 56 to cut off at 7 kc. The displacement may be in either or both directions and means may be provided to vary the band-width passed. Automatic or manual tuning control may be employed and in the latter case the displacement-control may be cut out during tuning by connecting the control grid of valve 47 to ground over a switch 53 which may be coupled to the manual tuning means.
Patent GB-678297-A (GB)
Title: Suspension arrangement for cathode ray tubes
IPC: H04N5/645
Filed: 1949-09-14
Abstract: 678,297. Cathode-ray tubes. GREEN, J. D. F., and PYE, Ltd. Sept. 6, 1950 [Sept. 14, 1949], No. 23672/49. Drawings to Specification. Class 39 (i). In a magnetic focusing device of the type described in Specification 670,431 a rubber ring or series of angularly spaced rubber pads having ribs or protuberances is mounted behind the inner flanges of the pole rings so as to project through the focusing gap and resiliently mount and centre the neck of the cathode-ray tube. The ring or each pad is held against rotation by the pole ring clamping screws passing through grooves or apertures therein. Specifications 523,439, 628,541, 648,793 and 670,021 also are referred to.
Patent GB-589357-A (GB)
Title: Improvements in lamp holders of edison screw type
IPC: H01R33/22
Filed: 1946-02-18
Abstract: 589,357. Lamp caps and holders. BRITISH THOMSON-HOUSTON CO., Ltd., and WOOD, C. W. Feb. 18, 1946, No. 23780/44. [Class 38 (i)] The screw of an Edison screw - lamp holder is formed of a spring 8 having one end anchored in the housing 1 by a set-screw 9 and secured to a terminal 5 and the free end 11 posi tioned in a recess 10 tc prevent the spring from riding out of the housing or tightening on the lamp cap. A skirt 15 may be provided.
Patent GB-1397124-A (GB)
Title: Milking inflations
IPC: A01J5/06
Filed: 1972-05-19
Abstract: 1397124 Milking inflations G S MILLS 19 May 1972 [27 May 1971] 23785/72 Heading A1M A teat cup liner 1 has a flexible collar 6 with a tapered edge 6a at an angle (A) of less than 80 degrees with a flat upper teat engaging surface 6b. In a modification, Fig. 4, teat gripping segments 10 are formed integrally with the collar 6. The liner may be made from natural or synthetic rubber or from elastomeric vinyl plastics such as p.v.c.
Patent GB-599330-A (GB)
Title: Improvements in lavatory seats for infants' use
IPC: A47K13/06
Filed: 1945-09-14
Abstract: 599,330.  Infants' lavatory seats. DALLEY, A. C. J. Sept. 14, 1945, No. 23804. [Class 26] An infants' lavatory seat, which may be of wood or synthetic resin, comprises a seat proper 1 held in position between the bowl 5 and the full-size seat 2 by a frame 4, which may be of wire, and may carry an adjustable foot-rest 6. The seat proper can have extensions 4 in the form of a unitary moulding with an upstanding outwardly-directed rim (Fig. 5), an inwardly, or an inwardly- and downwardly-directed rim as in Fig. 6, supportable by a strengthening piece 10. According to the Provisional Specification, the seat proper may be of C shape, with two horizontal U-shaped arms projecting beyond the full-size seat.
Patent GB-355014-A (GB)
Title: Improvements in composite rubber heels and process for making and joining same
IPC: A43B21/06
Filed: 1930-08-08
Abstract: 355,014. Rubber heel protectors. JASUS, J., 1330, Perrysville Avenue, and ANDERSON, A. J., 207, American Bank Building, both in Danville, Illinois, U.S.A. Aug. 8, 1930, No. 23830. [Class 17 (iii).] In making a composite rubber heel pad for attachment to boots &c. a leather lift A and rubber pad B are held temporarily in position with holes 5, 6 formed in each in register by temporary pegs 7 inserted in some of the holes and a strip 8 of rubber of larger cross section than the holes is pulled through under tension until an adhesive coated portion lies within the holes 5, 6. When tension is released, the portion 11 of rubber strip within the hole expands and secures, with the adhesive, the lift A and pad B together. The strip is then trimmed flush with the surfaces. The composite pad is attached in any desired manner by fastenings driven from inside or outside the shoe. The fastenings 11, being of the same material as the pad B, wear at the same rate with it.
Patent GB-1460774-A (GB)
Title: Radiological examination table
IPC: A61B6/04
Filed: 1974-05-29
Abstract: 1460774 Adjustable tables C G R GENERAY SpA 29 May 1974 [29 May 1973] 23833/74 Heading A4J [Also in Division H5] An adjustable patient supporting table for radiology comprises a support plate supported through a slideway 16 at each end by a support mechanism shown in Fig. 2. Two cranks 10, 11  are pivotally connected at 17 to two sliding blocks 14, 15 at one end and connected to respective coaxial shafts driven by wheels 12,13 at the other, the shafts being parallel with the longitudinal axis of the support plate. The support plate can be rotated by causing the cranks 10, 11 to rotate equally in the same sense whereas to raise the support plate, e.g. for tomography, the cranks are rotated equally in opposite senses. Lateral movement of the support plate is achieved by rotating shaft 18 and hence wheel 19 part of which co-acts with a fixed chain 20 extending transversely of the support plate or alternatively a rack and pinion mechanism may be used.
Patent GB-245219-A (GB)
Title: Improvements in or relating to sewing machines
IPC: D05B15/00
Filed: 1924-10-09
Abstract: 245,219. Walpole, H. E. C., and Keats & Bexon, Ltd. Oct. 9, 1924. Boot-sole sewing-machines; outsole-sewing.- The presser-bar is adapted to be given a lift of uniform amount above the work irrespective of the thickness thereof and the thread pull-off is also automatically adjusted by varying the needle stroke in accordance with the work thickness. The feed point is carried by the presserbar and is actuated by means comprising a lever moved in a horizontal plane by a cam on the main shaft. The machine, which is of the Blake type, comprises a needle-driving rocking lever 13 actuated by an eccentric 10, 12 driven bv the main shaft 5 and a rotary horn 4 containing a whirl also driven from the shaft by a train of bevel gearing of known construction. A disc 43 on the shaft 5 is provided with a cam 44 which engages a bowl on a horizontal lever 45 having a pin and slot connection with a lever 48 to which is pivoted a link 56 having a bifurcated extremity wherein is mounted in a curved slot 58 a pin 57 carrying the feed-point carrier 60. A lever 63 fixed on the pin 57 has a hooked extremity 64 which engages a pin 65 on the presser-bar 9. The presser-bar is raised by a lever 77 actuated by a cam 79 the lever bearing against a snail cam 70 mounted on the presser-bar and controlled by a spiral spring 74 surrounding the axes of the cam and connected at one end thereto and at the other to the lever 77. A pawl 81 which engages the toothed part 71 of the cam is actuated by a compensated rod 84 connected to a bell crank lever 86 operated by the lever 45. A pawl 98 engaging teeth 99 on the presser-bar is operated by a cam 90 and lever 91 acting through a compensated rod 94. This pawl is for the purpose of holding down the presser-bar as the needle is withdrawn from the work. A device for placing friction on the needle-bar comprises a block 100 against which bears a pin 102 pressed by a spring 103 adjustable by screws 104. Chain -stitching.-For the purpcse of varying the needle-stroke and consequent thread pull-off in accordance with the work-thickness the fulcrum 15 of the needle-actuating lever 13 is mounted on an adjustable post 16 the height of which is regulated by a lever 106 pivoted to the frame at 107 and resting on a pin in the presserbar and bearing on a stud 109 projecting from the post. The position of the stud is adjustable for varying the length of stroke.
Patent GB-1523008-A (GB)
Title: Process for the production of electrical layer capacitors
IPC: H01G13/00
Filed: 1976-06-10
Abstract: 1523008 Capacitors SIEMENS AG 10 June 1976 [11 June 1975] 24005/76 Heading H1M In the manufacture of a batch of capacitors by sawing up a parent capacitor, the parent capacitor comprises aluminium coatings on stretched foils of heat shrinkable plastics material and a layer of fusible polyolefin is arranged on the parent capacitor so that the saw blade initially passes through the fusible polyolefin layer and thereafter the capacitively active layers. Heat generated on sawing fuses the polyolefin which functions as a lubricant and coolant, and on resolidifying provides insulation in the region of the cut surfaces. Heat generated also causes shrinkage of the dielectric foils in the region of the cut edges, which shrinkage results in local breaking up of the aluminium coating into islands insulated from each other.
Patent GB-1338026-A (GB)
Title: Manufacture of carrier bag handles
IPC: B65D33/10
Filed: 1971-04-19
Abstract: 1338026 Carrier bag handles WINDMÍLLER & HÍLSCHER 19 April 1971 [13 March 1970 4 Nov 1970] 24073/71 Heading A4G A carrier bag handle is formed by folding over towards the centre the end portions 1, 2 Fig.3, of a plastics strip Figs.1, 2 (not shown), applying vacuum cups 5 to the free ends of the end portions 1, 2, and rotating through 90 degrees in opposite senses the end portions 1, 2 and vacuum cups 5 about axes perpendicular to the plane of the strip and adjacent the free ends thereof to form a U- shaped handle Fig.4 (not shown), the base of the U moving progressively away from said axes, the distance between said two axes, A, being equal to the distance between the centre lines of the U-legs 8. The strips may be severed from a plastics web (10), Fig.5 (not shown) having folded-over side edges (15, 16) provided with continuous adhesive layers (13, 14) and lines of weakness (18). Handles may be formed in pairs from a double width web (19), Fig.6 (not shown) additionally provided with a double width central continuous adhesive layer (22), the web being severed along the centre line (23) of the central adhesive layer (22). To form bags, handles 9, Fig.7 are adhered by the adhesive parts 13', 14' thereof to a plastics bag web 24, the web 24 having perforations 25. The bag web is folded about lines 26-30 to form a tubing with side gussets, which is welded at a side seam (33) Fig.8, (not shown). Bags are severed from the tubing by transverse cuts along lines passing through the perforations 25. Each bag is closed by a welded bottom seam (35), Fig. 8 (not shown). Before attaching the handle to the bag web, the handle may be adhered to a plastics reinforcing sheet (136), Fig.10 (not shown) provided with an adhesive covering (37) which is subsequently adhered to the bag web 24.
Patent GB-1026529-A (GB)
Title: Universal plug connector
IPC: H01R27/00
Filed: 1963-06-17
Abstract: 1,026,529. Two-part couplings. SUNBEAM CORPORATION. June 17, 1963 [Oct. 24, 1962], No. 24086/63. Heading H2E. A resilient plug body 12 having a pair of substantially parallel terminal pins 14 extending therefrom has a recess 18 (Fig. 5, not shown), between them enabling the pin separation to be varied by deforming the body. The pins and a flexible cable 16 may be moulded into the plug body, and the pins may be of brass strip bent double to form resilient portions 14a, which are also bowed outwardly (Fig. 8, not shown), to enable them to fit in various sizes of round or rectangular sockets.
Patent GB-277666-A (GB)
Title: Electrically operated washing machine
IPC: D06F23/00
Filed: 1927-09-13
Abstract: 277,666. Siemens - Schuckertwerke Akt.-Ges., (Assignees of Siemens-Schuckert. werke Ges.). Sept. 14, 1926, [Convention date]. Washing-machines with rotary receptacles. - The bearing 9 of the shaft 4 of the receptacle 3 is carried by a hollow shaft 8 which can be rotated about its longitudinal axis so that the receptacle shaft can be inclined to cause the receptacle to dip into one or other of the compartments of the casing 1, containing washing and rinsing liquids respectively, or to be vertical for centrifugal drying. The receptacle is driven at low speed for washing from an electric motor 7 through bevel gear 20, 21, Fig. 3, spur gear 22, 23, 24, 17 and a clutch 18 which is splined to a horizontal shaft 6 which drives the receptacle shaft 4 through bevel gear 5, Fig. 1, and which is housed within the hollow shaft. For centrifuging, the raceptacle is driven at high speed through bevel wheel 21, integral spur wheel 22, clutch 18 and shaft 6. The motor and gear-box 13 are carried by a flange on the hollow shaft, and the motor-casing is provided with handles by which the operator can swing the casing and shaft. On swinging the motor, the clutch is automatically moved to engage the drive appropriate to the position of the receptacle by means of a linkage 27 connected to a spring biassed lever arm 26, Fig. 1, which engages a cam-quadrant 29 on the side of the casing. In the inclined positions of the receptacle, the lever 26 is held engaged in notches in the quadrant 29. The weight of the receptacle may be counterbalanced by the weight of the motor with added weights if necessary.
Patent GB-1116443-A (GB)
Title: Improvements in or relating to laser apparatus
IPC: H01S3/098
Filed: 1965-06-08
Abstract: 1,116,443. Lasers. AMERICAN OPTICAL CO. 8 June, 1965 [16 June, 1964], No. 24156/65. Heading H1C. The effect of a temperature gradient present in a glass laser rod from its centre to its periphery on the optical path lengths of a ray passing through the rod is compensated. A glass laser rod 12 is positioned in an optical cavity 118, 21 which cavity includes a diaphragm 22 positioned at the focal point of lenses 24, 26 in order to suppress all but the HE 11  mode. Due to heat produced by the pumping lamp 14 a temperature gradient results across the rod i.e. the periphery of the rod is at a higher temperature than the axis, Thus if a tangentially polarized plane wave 107 propagates in the direction 110 through the rod then due to the index of refraction of the rod being less at the axis of the rod than at its periphery wave front 107 is distorted into wavefront 108 which protrudes in the direction of propagation near the axis of the rod. On the other hand a radially polarized plane wave is less protruded at the axis of the rod, wavefront 114, due to the decrease of refractive index towards the centre of the rod, than a tangentially polarized light wave, Fig. 4 (not shown). As well as the distortion of the plane wavefronts due to stress birefringence mentioned above there is also a variation 116 of the plane wavefront due to temperature i.e. since temperature is greatest at the periphery of the laser rod the index of refraction will be higher at the axis of the glass rod assuming that the index of refraction varies inversely with temperature. Thus if the average value of the tangentially and radially polarized wavefronts 108, 114 is equal and opposite 120 to the wavefront 116 there will be no distortion of wavefront 107. In accordance with the invention a 45 degree Faraday rotator 124 is placed in the optical cavity so that passes of light in paths along the longitudinal axis of the rod 12 are successively radially and tangentially polarized to provide an effective optical path length equal to the average of radially and tangentially polarized optical lengths. It is shown that by choosing the length to diameter ratio of the laser rod and the coefficient of linear expansion, the temperature coefficient of the index of refraction, Poisson's ratio and the stress optics coefficients of the laser material correctly the effective optical path lengths for a ray through the centre of the rod and for a peripheral ray are equal and a plane wave passing through the rod is undistorted. That is by choosing the material and dimensions of the laser rod correctly the wave fronts 116 and 120 become equal and opposite.