baber/WOPTO huggingface dataset:
Patent GB-1509249-A (GB)
Title: Method for producing an electrode head for use in electro-chemical machining processes
IPC: B23H9/00
Filed: 1975-07-29
Abstract: 1509249 Electrode for electrolytic machining SKF INDUSTRIAL TRADING & DEVELOPMENT CO BV 29 July 1975 [1 Aug 1974] 31757/75 Heading C7B [Also in Division B3] A method for producing an electrode head 7 for electro-chemical machining comprises forming grooves in one surface of an electrically conductive flat blank, deforming the blank so that the grooved surface is curved to correspond with the shape 2 of the workpiece 3, coating the grooved surface with an electrically insulating film, removing the film until the areas between the grooves are exposed, and removing the material at those exposed areas so that they become recesses between raised portions covered with the film or consisting of the film. In use the head 7 is attached to an electrode 5 having a hole 4 through which an electrolytic liquid is pumped emerging through hole 6 in head 7 to flow through spaces 9 formed between recesses 10 and the workpiece to remove portions of the workpiece surface 2. The workpiece is a bearing cup for a spiral groove bearing. Deforming the blank is done in two stages, firstly punching the blank into a plastic cushion (22), Fig. 4 (not shown), of polyurethane or lead, secondly punching the partially formed head 7 into an open die (26), Fig. 5 (not shown). The insulating film is removed by form grinding. Removing the metal from exposed surface 10 is done by deep-etching methods or by electrolytic stock-removal methods.
Patent GB-656928-A (GB)
Title: Improvements in or relating to piezoelectric microphone and transducer devices
Inventor: BRADFIELD GEOFFREY
IPC: H04R17/00
Filed: 1948-12-09
Abstract: 656,928. Piezo electric instruments. NATIONAL RESEARCH DEVELOPMENT CORPORATION. Dec. 9, 1948, No. 31928. [Class 40 (iv)] [Also in Group XL (b)] A microphone or a compressional wave emitter comprises a compound piezo - electric crystal mounted as a diaphragm so as to be restrained at its edges, and firmly clamped at those parts of its edges corresponding to nodal points or nodal lines, the crystal being arranged as the end wall of an elongated hollow structure, the interior of which is filled with a vibration - absorbing medium. An elongated casing 1 of rectangular cross-section terminates in a flange 4 on which rest an insulating gasket 10, a conducting frame 11, and a compound piezo-electric diaphragm 5. Over the diaphragm is an apertured clamping frame 6 held in position by screws 9 engaging flange 4. Frame 11 may be of silver, and serves to make electrical connection to the underside of the crystal by means of a lead 13 which serves also to keep a central strap 12 away from the central vibrating part of the crystal. Connection to the upper face of the crystal is made through the casing 1 and frame 6. The casing 1 is filled with absorbent material such as glass wool to prevent setting up standing waves. When used as a microphone, the base may accommodate a small valve amplifier. The device may be mounted in the throat of a horn to increase its directivity. The compound crystal may comprise two X-cut quartz plates bonded together with their Y-axes at right angles, or two Rochelle salt crystals arranged for twisting, two opposite corners only being firmly held by hard inserts in a soft rubber gasket.
Patent GB-793699-A (GB)
Title: Improvements in and relating to pile fabrics
Inventor: JEFFORD EDWARD
IPC: D03D27/00
Filed: 1954-11-04
Abstract: 793,699. Knitted fabrics; finishing fabrics. LISTER & CO., Ltd. Nov. 1, 1955 [Nov. 4, 1954 [No. 31972/54. Classes 42 (1) and 74 (2). [Also in Group IX] A knitted or woven fabric having projecting fibres of different lengths to simulate fur incorporates pile-forming yarns containing fibres differing in thickness and shrinkability, such that on subsequent shrinking the thick fibres remain longer than the thinner ones. Fibres quoted are: cotton for the ground fabric ; nylon monofilament or staple fibre, polyester filament, viscose rayon filament, and mohair for the longer pile; cotton, and vinyl resin polymers and copolymers, particularly a blend of undyed and spun-dyed polyvinyl chloride staple fibre, for the short pile; flat or other cellulose derivative filaments may be used. An example of a plush fabric knitted on a circular machine has pile formed from a sliver of blended nylon and polyvinyl chloride staple fibres. Finishing.-Shrinkage may be effected by brushing the pile in the presence of steam for 45 to 90 minutes and/or may occur during dyeing. If cotton is used for the shorter pile, shrinkage is effected by caustic soda.
Patent GB-1490693-A (GB)
Title: Preparing carboxylic acids from glycidonitriles
IPC: C07C51/08
Filed: 1976-07-31
Abstract: 1490693 Carboxylic acid preparation UPJOHN CO 31 July 1976 32057/76 Heading C2C Carboxylic acids of formula wherein R represents hydrogen or an aliphatic, alicyclic, aromatic or heterocyclic group and R 1  an aliphatic, alicyclic, aromatic or heterocyclic group and CRR 1  may be an alicyclic or heterocyclic group, are prepared by reacting a glycidonitrile with a carboxylic acid halide R 2 .COX, where R 2 CO represents carboxylic acyl group (1- 18 C) and X is chlorine, bromine or iodide in the presence of a tertiary amine or tertiary amine salt catalyst to yield dehydrohalogenating to and hydrolysing with aqueous alkali metal base and acidifying to yield the free carboxylic acid. Lists of suitable R and R 1  groups are given and examples describe the preparation of 3 - methyl - 3 - (p - isobutylphenyl)glycidonitrile and the preparation therefrom of 2-(41-isobutylphenyl) propionic acid, and the preparation of 2-methyl-heptanoic acid and phenyl acetic acid. Cyanide in the mixture is destroyed by the addition of alkali metal or ammonium persulphate or hypochlorite.
Patent GB-604621-A (GB)
Title: Improvements in acoustic alarm clockwork apparatus
IPC: G04B25/02
Filed: 1945-11-28
Abstract: 604,621. Clocks. GOLDBERG, L. P. S. Nov. 28, 1945, No. 32195. Convention date, Dec. 15, 1944. [Class 139] In an alarm clock for use by blind persons the time graduations are in relief or are hollow and the means for setting the time of operation of the alarm are disposed concentrically of the time graduations. As shown in Fig. 1 a blind man's alarm clock comprises hands 4 and 5, rotatable by milled knob 15, of clearly different shape from one another and which co-operate with the scale 3a the numerals of which are hollow. Outside the time scale 3a is arranged a circle of push-pieces 2 which when in their operative or down position co-operate with a known type of .alarm mechanism. In operation the blind person by touch can easily determine which push-piece 2 to press down. As an aid there are also provided half-hour marks on the time scale 3a and the corresponding push-pieces 2 are of shorter length than the hour ones. The time scale may be on the casing as shown in dotted lines at 3b Fig. 1, or it may be on a ring of angular section carried by the case and disposed outside the push-pieces 2 (Fig. 7, not shown). Indicators 11 are also provided on time scale 3a next to numerals 3 and 9 so that the blind person may easily determine the axes of the clock hands. Specification 589,122 is referred to.
Patent GB-706760-A (GB)
Title: Work-table tilting mechanism for blind-stitch sewing machines
IPC: D05B1/24
Filed: 1952-12-19
Abstract: 706,760. Sewing-machines. FAIRWEATHER, W. C. (Singer Manufacturing Co.). Dec. 19, 1952, No. 32212/52. Class 112 Blind-stitching machines. In a machine having a work-support movably mounted on a base so that part of it underlies an overhanging arm, mechanism actuated by a rotary shaft may be provided for moving the work-support in one direction in opposition to a spring connected between the work-support and an element of that mechanism. The work-support may be located in its elevated position by. a movable stop which is adjustable by an eccentric. The work-support may be moved away from a stop periodically by eccentricoperated means for the production of skipstitches. The machine described is similar to that of Specification 704,657 with a workarm 22 oscillatable about a spindle 25 so that the work can be raised and lowered to produce anchor-stitches and skip-stitches; the work-arm is urged upwards by a spring 66, arranged as described in Specification 704,657, and its uppermost position is determined by stop means comprising an adjustable element and an element which is reciprocable, to cause the formation of skip-stitches, by mechanism which can be rendered ineffective. The adjustable element of the stop means comprises a rod slidable horizontally in the wall 40 of the machine base and arranged to be engaged by an adjustable screw carried by the skirt 42 of the work-arm; the rod is connected by a member 45 with an eccentric part 46 of a spindle 47 which is mounted in the standard 11 and is adjusted angularly by a thumb-disc 56 with a screw 52 acting through a link 50 on an arm 48 clamped on the spindle 47. The reciprocable element of the stop means comprises a plunger 79 arranged to be engaged by an adjustable screw 65 in the work-arm skirt 42; this plunger is mounted in a sleeve 78 which is slidable in the wall 40 and which is reciprocated through a member 59 by an eccentric 61 free on the part 46 of the spindle 47, the eccentric being rotated from the main shaft 17 by belt gearing arranged to give the required speed-ratio for producing a given number of skip-stitches between successive anchor-stitches. The plunger 79 has a collar with an inclined cam face 83 which is held against a pointed projection 84 on the end of the sleeve 78 by a spring 80 in the sleeve; it is rotatable by a hand-operated rack rod 87 engaging teeth 85 on the collar so as to vary its longitudinal position in the sleeve 78, thus determining whether it comes into engagement with the screw 65 during its constant reciprocation by the eccentric 61 or remains clear of that screw. In the latter case, the position of the work-arm is determined only by the adjustable element described above, and only anchor-stitches are formed; the plunger 78 is held in the skip-stitch position by a notch in the cam face 83 engaging the projection 84.
Patent GB-1439459-A (GB)
Title: Apparatus and method for atomic spectroscopy
IPC: F27B17/02
Filed: 1972-07-10
Abstract: 1439459 Spectrographic samples PYE Ltd 13 June 1973 [10 July 1972] 32253/72 Heading G2J [ Also in Division H5] A sample for spectroscopic examination is heated in a crucible 1 in the form of a tube blocked in the middle and having aligned holes above the block and a hole below the block. The crucible 10 is held between electrodes 12, 13 in a furnace having apertures 10, 11 in the walls aligned with the upper holes in the crucible to give a sight line A-A. Protective gas is supplied through the electrodes 12, 13 to issue from the holes in the walls of the crucible and the construction is such that the flow of gas is from the coolest parts at the ends of the crucible to the hottest part at the block on which the sample rests. The crucible may be graphite or tantalum.
Patent GB-1468974-A (GB)
Title: Manufacture of semiconductor devices
IPC: H01L21/603
Filed: 1975-05-23
Abstract: 1468974 Welding by pressure; spark erosion machines FERRANTI Ltd 24 May 1975  [20 July 1974] 32269/74 Headings B3R and B3V [Also in Division H1] In a method of wire bonding including bonding a wire 17, usually Au or Al, to a semiconductor device contact (e.g. of a transistor 10) and to another terminal (e.g. a conductor terminal 19), in either order, the wire is severed, either before or after the second bonding action, but after the bonding to the semi-conductor device, by an electric spark between two electrodes 30, 31 (Fig. 6), e.g. of tungsten wire, raised to the same potential but of opposite polarity such that at the point of severing, i.e. the centre of the spark the potential is zero, resulting in a negligible inadvertent current flow back into the semi-conductor. In operation, a ball 26 on the wire 17 is thermooompression bonded to a contact on the transistor 10, e.g. with ultrasonic vibrations, by a tungsten carbide nozzle 25 at 180‹ C. The nozzle is then indexed to a position above a Ag coating 28 of a terminal 19 of a conductor (15, Fig. 1, not shown) whereupon a second thermocompression bond is completed. The wire is then severed by the electric spark to produce two ball ends (26<SP>1</SP>, 33, Fig. 7, not shown) on the wire. The ball end (26<SP>1</SP>) adjacent the nozzle 25 may be used to restart the sequence. An electric circuit to produce the electric spark (Fig. 8, not shown) comprises a capacitor (36) and an pulse transformer.
Patent GB-1043520-A (GB)
Title: Anthraquinone-2-carboxamides and process for their manufacture and use
IPC: C09B1/20
Filed: 1965-07-28
Abstract: The invention comprises water-insoluble anthraquinone dyes of the formula <FORM:1043520/C4-C5/1> wherein R is H, alkyl, hydroxyalkyl or phenyl, R1 is a benzene, cyclohexyl or naphthyl nucleus devoid of water-solubilizing groups and R11 is H, amino, acylamino or sulphonylamino provided that when R is H, R1 is substituted phenyl. The dyes may be prepared by condensing a suitable anthraquinone-2-carboxylic acid halide with a phenyl-, cyclohexyl- or naphthyl-amine or by condensing a suitable 1-halo or 1-nitro-anthraquinone with ammonia or an alkyl- or arylamine. The dyes may be used to dye aromatic polyesters.  Examples are given.
Patent GB-281678-A (GB)
Title: A method of and apparatus for constructing piles of concrete or like materials
Inventor: EDGARD FRANKIGNOUL
IPC: E02D7/30
Filed: 1927-11-30
Abstract: 281,678. Compagnie Internationale des Pieux Armes Frankignoul Soc. Anon. Nov. 30, 1926, [Convention date]. Piles and piling.-The shell 1 of a preparatory pile and a ram 4 are driven into the ground at the same time by a monkey 5 acting on an anvil 3 which is rigid with the ram 4 and rests upon the upper end of the shell 1, the ram and shell being provided with distance pieces to guide and support one another. When the shell 1 has been driven down, as in Fig. 2, a portion of concrete mixture is fed through a shoot 6 at the top of the shell into the space 19 between the ram, which has been raised as in Fig. 3, and the shell to permit the concrete to pass to the space below the ram, means such as pins, teeth, or movable projections, which are retracted on upward movement of the ram, being provided on the ram to facilitate downward passage of the concrete, or a few blows may be given to the raised ram for this purpose. The concrete is beaten down by the ram, the shell being simultaneously raised by lifting-cables, until their tops are again level, when the ram is again lifted to form a further portion of the pile. Instead of feeding the concrete below the ram through the space 19, it may be fed from a hollow ram, a valve being provided in the base to permit its escape when the ram is lifted, or concrete may be supplied both from the ram interior and through the space 19. A water-injection duct leading through the ram to the base may be provided to facilitate sinking by flushing or to pass a charge of water to the concrete. If the ram is hollow to feed the concrete alone, its lower end may be formed as a restricted opening formed in a cap block secured to the lower end of the ram. In a form having a hollow ram the feeding shoot for the concrete projects into the hollow ram from the shell and carries a stirrer to facilitate the downward movement of the concrete. The lower end of the shell may be capped with a concrete block 2 which is left in the ground.
Patent GB-1323034-A (GB)
Title: Rock bolt assembly adaptor
IPC: E21D20/00
Filed: 1971-04-19
Abstract: 1323034 Rock bolt assembly adapter C I WILLIAMS 19 April 1971 [3 Feb 1970] 32441/72 Divided out of 1323031 Heading F2H The subject matter of this Specification is identical with that described in Specification 1,323,033, but the invention claimed is a device for adapting a rock bolt assembly (including an expansible shell (80) and a cone (81), for use in an oversized hole in a rock formation and comprises a C-shaped member (78) adapted to be mounted over the shell (80) and having means (85, 86) for locating it thereon, Fig. 6 (not shown).
Patent GB-1512634-A (GB)
Title: Maritime assemblies
IPC: B63B9/00
Filed: 1974-07-23
Abstract: 1512634 Building and launching offshore structures REDPATH DORMAN LONG (NORTH SEA) Ltd 23 July 1975 [23 July 1974] 32513/74 Heading E1H A maritime platform assembly is constructed by first stabilizing a foundation raft 132 on supports 121, 122 alongside quay 123. Structure 133, 134 is then moved from the quay onto the raft, secured thereto and the assembly so formed is floated away from the quay side. Specifications 1512635, 1512636, 1485755, 1501861 are referred to.
Patent GB-770697-A (GB)
Title: Improvements in and relating to tiltable work tables for machine tools
IPC: B23Q1/52
Filed: 1954-11-10
Abstract: 770,697. Machine-tool details. HOLLFRITSCH, H. Nov. 10, 1954 [Nov. 10, 1953], No. 32561/54. Class 83 (3). A work-table for machine-tools comprises an inverted U-shaped member 1, Figs. 1 and 2, which can be tilted to incline the table-top, by the provision of slots 6, 7, in wings 4, 5, each slot being an arc of a circle, the centre of curvature lying on the centre-line of the other slot, and clamping pins 9-12, carried by the table-support, passing through the slots to hold the table in adjusted position. The tablesupport may be a knee-type member 17, Fig. 2, of a milling-machine with an adjustable slide 3 on which the U-shaped member is mounted. A further adjustable slide 2, at right angles to the slide 3, may be provided on the top surface of the tilting-member. To provide tilting adjustment in two planes at right angles, two U-shaped members 1, 1<SP>1</SP>, Fig. 5, may be provided, the arms of one being downwardly directed over the end spaces of the other. The upper member is clamped by pins 8<SP>1</SP>, 9<SP>1</SP>, secured to the lower member.
Patent GB-273586-A (GB)
Title: Improvements in or relating to holders for menthol and the like
IPC: A61J3/08
Filed: 1926-12-24
Abstract: 273,586. Andersen, C. E. M., and Evans, Sons, Lescher, & Webb, Ltd. Dec. 24, 1926. Holders for menthol and the like.-A menthol holder a having the usual wooden cap or cover c is also provided with an undercut or tapered shoulder f over which a protective sheath e of cellulose &c. is placed while wet. As the sheath dries it grips the shoulder and prevents evaporation of the menthol &c. When the cone is required for use the sheath is torn off and discarded.
Patent GB-433018-A (GB)
Title: Improvements in presses for producing solid carbon dioxide
IPC: C01B32/55
Filed: 1934-11-13
Abstract: 433,018. Moulding solid carbon dioxide by stationary-mould machines. SCHUTZ, G. A., [Firm of], 38, Dresdenerstrasse, Wurzen, Germany. Nov. 13, 1934, Nos. 32681 and 32682. Convention dates, Nov. 13, 1933 and May 25, 1934. [Class 87 (ii)] A press cylinder 7 for solid carbon dioxide is raised and lowered by fluid pressure acting on its annular base portion 7<a>, and its piston is actuated by fluid pressure acting on a connected piston 10 surrounded by the cylinder containing the base portion 7a. The press cylinder when in its top position is closed by a housing 3 containing a snow. forming chamber 1 put intc and out of communicatior with the press chamber by a fluid-actuated shutter 4 In a modification, two shut ters are provided forming between them a chamber which is intermittently filled completely with snow formed in the chamber 1 above and delivering this measured quantity to the press. The press cylinder is supported by heat-insulating rods from a base member carried by the fluidactuated annular piston 7<a>. The parts are operated cyclically by liquid pressure controlled by a valve.
Patent GB-511242-A (GB)
Title: Improvements in or relating to metal paste pigments
IPC: C09C1/62
Filed: 1938-11-10
Abstract: 511,242. Metal paste pigments. ALUMINUM CO. OF AMERICA. Nov. 10, 1938, No. 32690. Convention date, Nov. 11, 1937. [Class 95] [Also in Group XVI] A stabilized metal paste pigment, particularly an aluminium paste pigment, having improved persistence of leafing power, comprises metal flakes, a leafing agent, and at least one compound selected from the group consisting of aniline and paraphenylene diamine. Stearic acid is a specified leafing agent, and mineral spirits may be used as a thinner in the paste. An addition of the stabilizing agent in an amount of about 0.002 to 0.5 per cent. of the finished paste is usually sufficient, though more may be added, thereby substantially reducing the amount of leafing agent which is necessary.
Patent GB-773324-A (GB)
Title: Improvements in silicone rubbers
Filed: 1954-11-11
Abstract: In making a heat-convertible organopolysiloxane containing an average of 1.98 to 2.01 hydrocarbon or halogenated hydrocarbon radicals per Si atom and which in the cured, solid, elastic state has low shrink characteristics, the volatile siloxanes boiling below 250 DEG  C. when measured at 760 mm. present in the convertible polymer are removed therefrom to an extent that less 2 per cent by weight of the convertible siloxane consists of the volatile siloxanes.  The volatiles, which are low molecular weight cyclic siloxane polymers, may be removed in the presence or absence of fillers or other additives other than the curing catalysts, by (1) heating the siloxane at 100 DEG  to 250 DEG  C., preferably under reduced pressure and desirably after neutralization of the polymerization catalyst; (2) selectively extracting the volatiles with suitable solvents, e.g. ethanol, butanol, isopropanol, ketones or mixtures thereof; or (3) by subjecting the siloxane to a kneading and air-stripping action as described and claimed in Specification 773,325.  Specified are silica, aerogel, calcium carbonate, diatomaceous earth, other finely-divided silicas, iron oxide, titania and lithopone as fillers, and benzoyl peroxide and t-butyl perbenzoate as curing catalysts.  In examples, a convertible dimethylpolysiloxane was (1) mixed with silica aerogel and compounded on a mill to form thin sheets which were then heated at 250 DEG  C. in an oven until the volatiles had been removed; and (2) neutralized by addition of triphenyl phosphate, as described and claimed in Specification 772,088 and then subjected to a kneading and airstripping action.  The filled siloxanes may be compounded with compression set additives, as described and claimed in Specification 768,286, and curing catalysts and cured in known manner.  The products find use in making gaskets and electrical insulation. Specifications 594,481, [Group IV], 618,453 and 640,067 also are referred to.
Patent GB-269818-A (GB)
Title: Improvement in single end clearance unloader for fluid compressors
IPC: F04B49/24
Filed: 1926-12-24
Abstract: 269,818. Ingersoll-Rand Co., (Assignees of Redfield, S. B.). Aug. 4, 1926, [Convention date]. Regulating compression.-A divided clearance chamber H and an inlet valve L, communicating with opposite ends of the cylinder, are controlled by fluid pressure to vary the unloading of the pump. The valves J, K controlling the clearance chamber inlet and partition are closed by springs and opened by fluid pressure acting on pistons Q. The valve L is opened by fluid pressure acting against a spring on a piston V formed with fingers X. The compressed fluid actuating the valves is supplied from the receiver E through a regulator 0, the piston of which is formed with passages controlling pipes 1, 2, 3 arranged so that, as the pressure rises, (1) valve J is opened, (2) valve K is also opened, (3) valve J remains open, valve K is allowed to close by venting of the fluid from its piston through a passage U.. and valve L is held open, and (4) valves J, K, L are all open.