baber/WOPTO huggingface dataset:
Patent GB-682944-A (GB)
Title: Improvements in or relating to electro-acoustic transducers
IPC: H04R19/06
Filed: 1949-01-17
Abstract: 682,944. Electrostatic instruments. - BOSWELL, I. I., and PLANER, G.V. Jan. 17, 1950 [Jan. 17, 1949], No. 1321/49. Class 40 (iv). [Also in Group XXXVI] In a condenser-type electro-acoustic transducer the inter-electrode space is filled with a medium, other than air, having a specific inductive capacity appreciably greater than unity. The filler may be a liquid; gas or paste and the following examples are given : finely divided barium titanate in a dispersion medium which may be a silicone compound, castor oil, paraffin or glycerol; a solid solution of barium titanate and strontium titanate; paraffin; pure distilled water, and a colloidal solution of vanadium pentoxide. A gramophone pick-up, Figs. 1 and 2, comprises a differential arrangement in which vanes 'or plates 29 move relative to groups of fixed plates- 30 and 31 under the influence of a stylus 27. The electrical connection to a push-pull amplifier, is described with reference to Fig. 4 (not shown) and the metallic connection is made by pins 35 which plug into a tone arm. The plug-and-socket arrangement may provide also the sole mechanical coupling. In a modification, Fig. 3, a solid metal tongue 64 moves between two metallic blocks 60 and 61 and the housing is again filled with a medium of high specific inductive capacity. An application of a condenser instrument of this type to a frequency moduolation system is described with reference to Fig. 5(not shown).
Patent GB-1161387-A (GB)
Title: 3-Dialkylaminophenyl-3-Heteroaryl-Dialkylaminophthalides and the use thereof in Pressure-Sensitive Recording Material
IPC: C09B11/08
Filed: 1968-01-10
Abstract: 1,161,387. 3-Dialkylaminophenyl-3-heteroaryl - dialkylaminophthalides. NATIONAL CASH REGISTER CO. 10 Jan., 1968 [30 Jan., 1967], No. 1388/68. Heading C2C. [Also in Division D2] The invention comprises compounds of the formula where the ring containing N represents a nitrogen containing heterocyclic aryl radical attached through one of its ring carbon atoms to the phthalide group, R 3  and R 4  represent C 1-5  alkyl radicals and Z and Y represent hydrogen or a di- (C 1-5 -alkyl) amino radical, one of Z and Y being hydrogen and the other the said dialkylamino radical. The compounds are prepared by reacting a dialkyl aniline with a 4-dialkylaminophthalic anhydride in the presence of a metal halide of the Lewis acid type, e.g. AlCl 3 , and an organic solvent to obtain the corresponding 4 - dialkylamino - 4<SP>1</SP> or 5<SP>1</SP> - dialkylamino - benzophenone - 2<SP>1 </SP>- carboxylic acid and reacting this product with the appropriate aromatic heterocyclic compound in the presence of an acidic condensing agent, e.g. acetic anhydride, H 2 SO 4 , ZnCl 2 . The phthalides are colourless or slightly coloured compounds which assume a darkly coloured state in contact with an acidic material and which are used in pressure-sensitive recording material (see Division D2).
Patent GB-1474360-A (GB)
Title: Earth moving implement having a replaceable cutting edge assembly
IPC: E02F3/40
Filed: 1976-01-14
Abstract: 1474360 Excavator teeth assemblies CATERPILLAR TRACTOR CO 14 Jan 1976 [12 May 1975] 01424/76 Heading E1F A replaceable cutting edge assembly for an earth-moving implement comprises cutting edge sections 22 and digging teeth 24. Each cutting edge section 22 has a wedge shaped portion 32 extending forwardly from the leading edge 12 of the floor of the implement and a flange 36 underlapping the floor, the flange and the Boor having aligned holes 28, 30 for receiving bolt means 26 for securing the cutting edge section 22 in place. Each cutting edge section 22 also has a rearwardly facing stepped surface 38 at the junction of the wedge shaped portion 32 and the flange 36, the stepped surface being spaced apart from the leading edge 14 of the floor. A tooth 24 is located at each juncture between adjacent pairs of cutting edge sections. Each digging tooth 24 has a rearwardly extending portion 14 that is shaped to overlap and abut against the wedge shaped portions of the associated cutting edge sections 22 and is provided with a tang 46 extending into and substantially filling the space between the leading edge of the floor and the stepped surfaces 38 of the two associated cutting edge sections. In a modified construction to that shown each tooth is also provided with a portion that extends rearwardly beneath both associated cutting sections as well as the floor and is apertured so that a tooth can be further secured in place by the bolt means 26 passing through said portion as well as the sections and the floor.
Patent GB-1492514-A (GB)
Title: Preparation of 2-hydroxyalkyl phosphines
IPC: C07F9/50
Filed: 1976-01-14
Abstract: 1492514 Preparing 2-hydroxyalkyl phosphines BORG-WARNER CORP 14 Jan 1976 [16 Jan 1975] 01457/76 Heading C2P A 2-hydroxyalkyl phosphine is obtained by (1) reacting a phosphine: (R)(R<SP>1</SP>)PH where R and R<SP>1</SP> are H, alkyl, aryl, cycloalkyl or aralkyl with an alkenyl carboxylate: where R<SP>11</SP> is H or methyl and R<SP>111</SP> is C 1 -C 17  alkyl in the presence of (a) from 0À01% to 5À0% by weight of a non-oxidizing aliphatic initiator (e.g. a peroxide or azo compound) having less than 30 carbon atoms, and (b) light having a wave length between 2000 and 4000, at from 10 to 50 C. to form a 2- acyloxyalkylphosphine and (2) converting the latter to the corresponding 2-hydroxyalkyl phosphine by hydrolysis (e.g. in the presence of an acid catalyst) or by alcoholysis which may be carried out in the presence of an alkaline material or an acid as catalyst. The preferred alcoholysis agent is methanol and specified alcoholysis catalysts are NaOH, KOH, sodium and potassium carbonates, HCl and H 2 SO 4 . In a modification of the process, when at least one of R and R<SP>1</SP> is hydrogen and the phosphine and the alkenyl carboxylate are reacted in substantially equimolar proportions, the phosphine is simultaneously reacted with methyl acrylate or the 2-acyloxyalkylphosphine product of step (1) is reacted with methyl acrylate, to form a 2-acyloxyalkyl 2-carbomethoxyethyl phosphine which is then subjected to the hydrolysis or alcoholysis step (2) to form the corresponding 2-hydroxylalkyl 2-carboxy (or esterified carboxy) ethyl phosphine. The first step of the two-stage process is generally carried out in an inert solvent which may be left in the reaction mixture to serve as a solvent in the second step.
Patent GB-535448-A (GB)
Title: Improvements in non-bitter starch conversion sugar products and process of manufacture
IPC: C13K1/06
Filed: 1940-01-24
Abstract: 535,448. Glucose. WALSH, J. F., KINZANGER, S., GOODMAN, A. H., and AMERICAN MAIZEPRODUCTS CO. Jan. 24, 1940, No. 1458. Drawings to Specification. [Class 127] Syrups or solid sugar products, obtained by the conversion of starch by heating under pressure with acid, are produced free from bitterness, by decreasing the concentration of the acid during the conversion. Starch suspensions of 8 to 23‹ Be are adjusted to pH 0.75 to 1.5 by hydrochloric, sulphuric or other inorganic or organic acid and are heated under pressure. During the conversion the pH is raised to 1.6 to 3.0 either by dilution with water or by addition of sodium or potassium hydroxide or other alkali. The conversion product is treated with alkali or other base to give a pH of 4.5 to 5.0, filtered and decoloured by charcoal, &c. It is concentrated to 30‹ Be, brought by addition of alkali to pH 6.5 to 7.5, heated to 140 to 160‹ F. to coagulate impurities, filtered again decoloured by charcoal, and concentrated by heat. It may be spray-dried to form a powder or granules.
Patent GB-1595031-A (GB)
Title: 3-isobutoxy-2-pyrrolidino-n-phenyl-n-benzyl propylamine and its salts
IPC: C07D295/13
Filed: 1978-01-13
Abstract: The compound of formula (I) has a molecular mass M of 366 and a boiling point B.p.0.5 of 192 DEG C. It can be used for the treatment of cardiovascular ailments, especially for the treatment of angor (angina). <IMAGE>
Patent GB-264542-A (GB)
Title: Improvements in or relating to weighing scales
IPC: G01G3/02
Filed: 1926-06-02
Abstract: 264,542. Dayton Scale Co., (Assignees of Strachan, T. H.). Aug. 1, 1925, [Convention date]. Computing - apparatus.- In a. weighing-scale wherein an indicating drum is rotated by means located at the ends of the drum shaft, the drum projects in an axial direction beyond the shaftrotating means. The shaft 128 of the indicating drum 126 is supported at each end in a bearing 132 carried by the end casting 72 on which the drum casing is mounted. The end castings have portions 125 of reduced diameter and the ends of the computing drum are extended over these reduced portions. The driving racks 117 are offset from their carriers 115 so as to enter the drum ends and thereby avoid the employment of a longer drum shaft. The reading wire 143, Fig. 6, extending across the front of the machine is secured to slotted L-shaped members 145, attached to bosses 140<a> on the end castings by means of screws 142<a>, 148. The screw 148 bears upon the face of the boss 140a and is used to tension the reading wire. By first slackening the screw 142a the reading wire may be moved in or out, or up or down as desired. Specification 256,187 is referred to.
Patent GB-345719-A (GB)
Title: Improvements in catches or fasteners for the cases of cameras or for receptacles such as handbags and the like purposes
IPC: A45C11/38
Filed: 1930-01-16
Abstract: 345,719. Spring catches. HOUGHTON-BUTCHER MANUFACTURING CO., Ltd., Fulbourne Road, Walthamstow, London, DENNISS, A. J., The Langdales, Connaught Avenue, Chingford, Essex, and EDWARDS, V. W., 69, Ulverston Road, Walthamstow, London. Jan. 16, 1930, No. 1540. [Class 44.] A catch described as aplied to fastening the hinged back of a roll-film camera, but applicable to attache cases, purses, hand-bags, &c., has a lever device operation of which first releases the catch and then separates the parts. A spring plate 13 secured to the body 10 of the camera is provided with tongues 16, 17, the latter being curved and bent into a higher position than the former. The end portions 18 of the plate are bent under to provide distancepieces 20 which prevent accidental crushing and are cut away to provide shoulders 19 adapted to be engaged by upstanding projections 23 on a plate 22 secured to the back 11 of the camera. A lever 26 pivoted in lugs 27 on plate 22 is biased by a spring 28 so as normally to lie against plate 22, the hinge and spring being covered by the tongue 17 when the parts are in fastened position. Lever 26, when raised, first engages the tongues 16, raising the shoulders 19 clear of projections 23 and withdrawing the projections 23 under the parts 18. Friction between the parts 18, 23 prevents the back 11 from flying open too readily. When the tongues have been raised to the level of the pivot 25 of lever 26, as shown in Fig. 5, further movement of the lever causes it to bear against the edge of tongue 17, completely separating the catch members.
Patent GB-377894-A (GB)
Title: Evaporator for refrigerating plants
IPC: F25B39/02
Filed: 1932-01-19
Abstract: 377,894. Evaporators for refrigerating plants. PLERSCH, R., Illertissen, Bavaria, Germany. Jan. 19, 1932, No. 1566. [Class 29.] An evaporator for refrigerating plants comprises horizontal distributing and collecting pipes 1, 2 connected by obliquely ascending smaller diameter pipes 4, 6 which are arranged in one or more series. One or more pipes 3 are interposed between the distributing and collecting pipes to which all or part of the ascending pipes are connected.
Patent GB-547391-A (GB)
Title: Improvements in handbags
IPC: A45C7/00
Filed: 1942-02-06
Abstract: 547,391. Shopping bags. PEACOCK, G. W. Feb. 6, 1942, No. 1574. [Class 133] A shopping bag consists of an open-ended outer part 10 provided with an exterior band 11 formed with loops 12 through which' handles 14 are slidable and an inner portion 17 comprising flexible sides 18, attached at their upper edges to the outer part, and a stiff or semirigid bottom. By inverting the outer part as shown a container of greater capacity is afforded. The part 10 may be fitted with a detachable flanged cover.
Patent GB-735197-A (GB)
Title: Improved face mask for use in dust-laden or other contaminated conditions
IPC: A62B18/02
Filed: 1953-01-20
Abstract: 735,197. Respiratory appliances. RICHARDSON, R. J. Jan. 11, 1954 [Jan. 20, 1953], No. 1589/53. Class 81 (2). A dust mask comprises a hood enclosing the upper part and sides of the nose and extending downwardly in front of and clear of the upper lip to leave a clear and direct passage to atmosphere and provided with a tube for introducing air into the enclosed space. The mask is preferably extended upwards to provide goggles and. as shown, is then divided into two compartments by a wall 15, the upper part 10 forming the goggles and the lower part 13 forming the nosepiece. Air is fed in through a tube 18, having a number of apertures covered with or enclosing a diffusing medium and the air passes downwards past the nostrils and out of an orifice 14a, so forming a curtain in front of and below the mouth. In order to prevent misting of the goggles a small proportion of air passes upwards through a hole 27 and out through a hole 28. In a modified form of mask, see Fig. 7 (not shown) the air supply pipe is mounted adjacent to the nostrils and the hood extends vertically downwards below the nose instead of being swept inwards.
Patent GB-1011492-A (GB)
Title: Improved means of fastening seats to floors
Inventor: GORNALL JOHN
IPC: B64D11/06
Filed: 1963-01-14
Abstract: 1,011,492. Turn button fastenings. AIRCRAFT FURNISHING Ltd. Jan. 10, 1964 [Jan. 14, 1963], No. 1663/63. Heading E2A. [Also in Division A4]  A seat, particularly in vehicles, is releasably secured to a lipped channel section rail (not shown), fixed to the floor and having cut away lip portions defining openings, by means of a shear pin assembly carried by the seat frame, the assembly comprising at least one stud 1 for engaging beneath the channel lips and a shear pin 2 rotatable about its longitudinal axis and having a lower end portion 2b of elongated cross section, the assembly being secured by first passing the studs 1 into the channel through its openings with the elongated portion 2b orientated to lie lengthwise between the channel lips, then sliding the assembly along the channel to engage the studs 1 beneath the channel lips and to locate the shear pin 2 within an opening, and finally rotating the pin 2 through 90 degrees so that the major axis of its elongated portion 2b lies across the opening and thereby prevents further movement lengthwise of the channel. The shear pin 2 is biased to its locked position in an opening by a torsion spring 9 surrounding its upper portion 2a and is rotatable by a bar 10 longitudinally slidable within this upper portion 2a between limits defined by a handle 14 and a circlip 15 at opposite ends of the bar 10. A groove 10a in the bar 10 co-operates with a ball and spring catch 11, 12 to retain the pin 2 in the position shown. The assembly includes an integral stirrup 6 for attachment to a seat leg.
Patent GB-386444-A (GB)
Title: Improvements in electric current collectors
IPC: B60L5/06
Filed: 1932-01-20
Abstract: 386,444. Capillaryaction lubricating. MOREBY, G. J., P.O. Box 65, Mufulira Mine, Mufulira, Northern Rhodesia. Jan. 20, 1932, No. 1743. Convention date, Jan. 20, 1931. [Class 12 (iii).] A trolley pulley for collecting electric current is mounted on ball-bearings 16, which are lubricated by wicks 21. The latter dip into oil reservoirs 18 located in the trolley head 9 and pass through a hollow spindle 11 to apertures 19 leading to the bearings. Circumferential grooves 31 may be provided on the spindle to prevent oil pass. ing towards the centre portion thereof.
Patent GB-281498-A (GB)
Title: A new or improved method for the controlling of a dazzle eliminating device relating to motor vehicle head-lamps
IPC: B60Q1/14
Filed: 1927-01-22
Abstract: 281,498. Cotton, A., and Slingsby, W. T. Jan. 22, 1927. Lantern screens.-In a vehicle or like lamp in which a screen is movably mounted between the source of light and the reflector, the screen is controlled by lever mechanism concealed within the lamp casing and actuated by a rod or like member extending through a hollow support or other part of the attachment of the lamp to the vehicle. In the form shown in Fig. 1, a tubular screen W is connected to gudgeons H or to studs M screwed into the gudgeons. The gudgeons are slidably mounted in hollow supports J projecting forwardly from a base plate A, and the studs M project through slots L in the supports J and engage in slots N in the ends G of a fork lever F. The latter is pivotally mounted on a pin E carried by lugs C on the base plate A, and is rocked by means of a connecting rod or tube 0 which passes through a hole in the lamp casing B and through a hollow support Q secured to a girder S on the vehicle. The rod 0 may be pivotally connected to an adjustable arm U secured to a transverse rod T which may be rotated to reciprocate the rods 0 of a pair of headlamps. In the form shown in Fig. 3, a tubular screen 11 is carried by a bossed disc 6 slidably mounted on a tubular member 5 carried by a bracket 1. The disc 6 is provided with a pin 12 to engage a slot in the member 5, and with a pair of oppositely arranged studs 7 engaging the forked ends of a fork lever 8. The rod 0 instead of being reciprocated may be oscillated about its own axis. For this purpose its upper end is threaded with a quick thread engaged by a nut which is horizontally pivoted on the forked end of the lower arm of the lever F.
Patent GB-290704-A (GB)
Title: Improvements in the electro-depositing of metals
IPC: C25D17/14
Filed: 1927-01-22
Abstract: 290,704. Bennett, J. F., and Hadfield, J. Jan. 22, 1927. Electrodes, moving; connections. -A plating electrode comprises a rod or tube A of carbon or other conductive material around one end of which is applied the plating metal C and an absorbent pad D saturated with electrolyte; an insulating handle B and flexible lead E are mounted at the opposite end. The plating metal may be applied in the form of a tube or a thimble or as metal sheet, strip or wire wrapped round the member A. When the member A is tubular, metal may be applied inside and' outside; in this case the pad D has a part extending within the tube and the projection of the pad beyond the tube mav be adjusted by sliding. The pad D may be of cloth asbestos, porous rubber or bristles. A box having compartments for the reception of the electrode and auxiliary apparatus such as an accumulator, electrolyte containers, a resistance fuse and switches is described. The electrode may be used for removing metal.
Patent GB-388909-A (GB)
Title: Improvements in and relating to controlling devices for automobiles
Filed: 1932-01-22
Abstract: 388,909. Controlling brakes and motors. WESSELY, A., 4, Neudorferstrasse, Wiesbaden, Germany. Jan. 22, 1932, No. 1989. Convention date, Feb. 9, 1931. [Class 103 (i).] Means for cutting off the power supply to an engine when the brakes are applied to a device driven thereby comprises a disconnectible coupling between the power supplying means and the hand or other control member therefor, the coupling being discon. nected to permit the power supplying means to return to the cut-off or idle running position under spring action. As applied to a motor vehicle driven by a petrol engine and in which the throttle lever d is operated by the hand-lever a and pedal f through connections c, c<l>, the rod c<1> is connected to a movable casing h to which are pivoted a pair of spring-urged members s adapted normally to grip the end d<1> of the lever d. A lever u also pivoted to the casing carries a wedge piece u<1> which when the lever is moved downwardly separates the members s. The lever u is connected by a Bowden cable m to a slotted piece n in which are disposed pins on a connection i<1> to the hand brake lever i and on a lever j<1> arranged for engagement by the brake pedal j. A spring q may be inserted between the cable m and the piece n. By the operation of either of the levers a, f the lever d is raised by the casing h to open the throttle. If, then, either of the brake levers i, j is moved to apply the brakes, the lever u is moved downwardly to open the arms s and the lever d is urged back by its spring to the cut-off or idle-running position. Upon moving the levers a, f to the cutoff position, the lever d snaps back into engagement with the arms s. Modifications of the coupling device, shown in Fig. 1, are described. The slotted piece n instead of being directly connected to the Bowden cable or to the spring q may be secured in a longitudinally adjustable manner to a part which is connected to the cable or spring. The arrangement may thus be such that the throttle is not closed until a predetermined degree of braking has been effected. Specifications 103,617 and 277,205, [both in Class 79 (v), Motor vehicles &c.. Steering &c.], are referred to.
Patent GB-627272-A (GB)
Title: Improvements in fishing tackle
IPC: A01K91/06
Filed: 1947-01-23
Abstract: 627,272. Coating yarns. PALMER, P. C. Jan. 23, 1947, No. 2125. [Class 140] [Also in Group VI] A line greasing device for attachment to a fishing rod 15 has an axially movable and removable cap 23 controlling supply of grease to the body 10 of the device. The body has a circumferential groove 19 housing a pair of grease-resisting rubber rings 21, grease being fed to the groove along passages 16, 18. The line 25 is pushed between the rings into the groove when it is desired to grease it. The device may be mounted on a clip, and arranged to turn to an inoperative position. The Provisional Specification describes a device in which the cap is attached to the rod and the body member is moved to control the grease supply.
Patent GB-690472-A (GB)
Title: Improvements in or relating to electric discharge tubes
IPC: H01J17/04
Filed: 1952-01-29
Abstract: 690,472. Discharge apparatus. PHILIPS ELECTRICAL INDUSTRIES, Ltd. Jan. 29, 1952 (Feb. 1, 1951], No. 2399/52. Class 39(i). In a low-pressure gas or vapour filled discharge tube, such as a fluorescent lamp, having a conductive strip 3 on the inner envelope surface which is connected to one electrode 6, the connector 4 is protected from the heating effect of the discharge by an insulating covering 7. The critical area for protection is the junction between connector 4 and strip 3, to which the covering may be confined.
Patent GB-1123964-A (GB)
Title: Improvements in or relating to heald wires
IPC: D03C9/02
Filed: 1967-01-17
Abstract: 1,123,964. Healds. GROB & CO. A.G. 17 Jan., 1967 [17 Jan., 1966], No. 2402/67. Heading D1E.  A metal heald 1 has a straight edge 6 and an eye 5 that is offset from the centre lines XX of the heald rails 4. The eye may 'be offset on the other side of the centre line to that shown in Figure 1 and the healds may be assembled alternately on a heald frame.