baber/WOPTO huggingface dataset:
Patent GB-803882-A (GB)
Title: Improvements in or relating to sewing machines
IPC: D05B51/00
Filed: 1954-03-26
Abstract: 803,882. Sewing machines. UPRICHARD, W. H. May 20, 1955 [March 26, 1954], No. 8840/54. Class 112 Control means in a belt-driven sewing machine comprises means for urging the belt on to the loose pulley, solenoidoperated catch means for maintaining the belt on the fast pulley, and pairs of contacts in parallel in the circuit to said solenoid whereby, on breakage or exhaustion of either the top or bottom thread. the solenoid releases said catch, movement of the belt also applying brake means to stop the machine. The top thread t passes over a pin 24 carried by a vertical arm of a bell-crank lever 23 mounted on the head of the machine. whereby the thread tension holds an electric contact 25, carried by the horizontal and lower arm of the bell-crank lever, away from a fixed contact 26. Failure of the thread thereby results in closure of the contacts to energize a solenoid 20. The core 19 of the latter is connected by a pivoted arm 18a to a slidable catch member 18 which is thereby disengaged from a catch member 17 carried by a shaft 12 biased by a spring 14 in the clockwise direction. A fork 11, carried by an arm 11a secured to shaft 12, then shifts a driving belt from a fast to a loose pulley, a brake block 27, mounted on arm 11a, engages the flywheel of the machine, and an abutment 11b on arm 11a is disengaged from a switch 29 to allow the latter to close for energizing an alternative circuit to solenoid 20. Shaft 12 may be turned to the driving position by a handle 13. A switch 27<SP>1</SP> has an operating lever 28<SP>1</SP> which is biased to the switch-open position and is provided with horizontal arm 29<SP>1</SP> disposed behind the needle aperture 32 in the presser foot 31. On failure of the bottom thread, the top thread is carried into a rearward extension 30 of aperture 32, to contact arm 29<SP>1</SP> and thereby move lever 28<SP>1</SP> to close switch 27<SP>1</SP> for energizing solenoid 20. Specification 803,699 is referred to.
Patent GB-580071-A (GB)
Title: Improvements in and relating to lathes
IPC: B23B3/00
Filed: 1944-05-10
Abstract: 580,071. Combined turning, drilling, milling, and planing machines. HARDY, N. S., KNELLER, C. J., and GRICE, N. W. May 10, 1944, No. 8865. [Class 83 (iii)] A lathe comprising headstock, tailstock and saddle-traversing lead-screw is characterised by a hand lever operating independently of the lead-screw for producing a rapid traverse or reciprocation of the saddle or the tailstock. The bed of the lathe comprises two tubular members 12 extending between supports 44 and 45, the support 44 also carrying the headstock 10 of known type. The members 12 extend through and support the saddle 13 and the tailstock 25, both of which have half-nuts which may engage a lead screw 14 in one of the tubular members. A vertical pillar 18 extends through the saddle and may be raised or lowered by means of a hand wheel 30 .and screw 17. The screw may be locked relatively to the pillar so that the hand wheel may be used to rotate the pillar, a pointer 32 co-operating with a scale on the hand wheel to facilitate adjustment. As shown in Fig. 1, the upper end of the pillar may have sockets 23 for carrying tools 24 or, as shown in Fig. 2, the pillar may support a cross-slide 19 carrying means 21 for supporting the tool or tools or for supporting the work. The lead-screw of the cross-slide 19 is operable by a handle 20 at each end. The tailstock carries a spindle 38<1> mounted in a cross-slide traversable by a screw 41. By mounting the work on the tailstock spindle, the machine may be used for drilling off-centre holes. The ends of spindles 38<1>, 39 are preferably similar so that a chuck or the like carrying the work may be readily transferred from one to the other. A lever 33 secured to the tailstock and connected to the saddle by a link 34 enables either part to be rapidly reciprocated, the half-nuts being disengaged from the lead-screw 14 and the part not to be reciprocated being clamped to the bed by means of screws 35 or 36. This mechanism allows the machine to be used for shaping, planing, slotting and like operations. Instead of having a separate half-nut for traversing purposes, the tailstock may be coupled to the saddle by a latch 37. Indexing.-The tailstock spindle may be indexed about its axis by means of a handle 47 coupled to the spindle through a worm (not shown) and worm-wheel 46.
Patent GB-199802-A (GB)
Title: Process for the graphic decoration and engraving in metallic relief of glass, pottery, ceramic products and the like
IPC: B44C1/20
Filed: 1922-03-28
Abstract: 199,802. Huysmans, G. L. March 28, 1922. Ornamenting.-Raised designs or inscriptions are produced on glass, pottery, and the like by the application thereto of a plastic composition consisting of finely powdered metals, such as copper, aluminium, and magnesium, mixed with an emulsion of calcium carbonate, a thick solution of mucilage, such as Senegad gum copal, aluminium sulphate, and coal tar or drying oil. The composition hardens without high temperature baking. A suitable method of applying the composition is by extrusion apparatus. The leads of stained glass may be imitated by this process.
Patent GB-981935-A (GB)
Title: Process for preparing polyurethane-urea elastomers
Inventor: FRISCH KURT C
IPC: C08G18/22
Filed: 1962-03-08
Abstract: A process for making polyurethane-urea elastomers comprises reacting (1) a polyoxyalkylene polyol and mixtures thereof having an equivalent weight from 200 to 2000, an oxygen/carbon ratio from 1/2 to 1/4 and 2 to 6 terminal hydroxyl groups; (2) a chemically hindered, aromatic diamine, and (3) an organic diisocyanate in the presence of (4) a polyvalent organometallic salt catalyst at a temperature from 0 DEG  to 120 DEG  C. and curing the reaction mixture at a temperature from 20 DEG  to 150 DEG  C., said diamine being used in an amount to provide an NH2/OH ratio from 0.5-1.8, said diisocyanate being used in an amount to provide an NCO/(OH + NH2) ratio from 0.95-1.6, said catalyst being used in an amount corresponding to 0.01 to 1.0% of the combined weight of polyol and diamine, and, providing further, that said reactants are substantially anhydrous and substantially free of entrapped gas. Chemically hindered, aromatic diamines are defined as being aromatic diamines having one or more negative substituents, e.g. a nitro group on the aromatic ring to which the amine grouping is attached.  The NH2/OH and NCO/COH + NH2) ratios are ratios of equivalent weights. Many polyols are specified.  Specified aromatic diamines are 4:41-methylene-bis-(2-fluoroaniline), 4:41 - methylene - bis - (2 - chloroaniline), 4:41 - methylene - bis - (2 - bromoaniline), 4:41 - methylene - bis - (2 - nitroaniline) and 4:41 - diamino - 3:31 - dichlorodiphenyl. Specified organometallic salt catalysts are stannous acetate, stannous butyrate, stannous 2-ethylhexoate, stannous laurate, stannous oleate, stannous stearate, lead cyclopentane carboxylate, cadmium cyclohexane carboxylate, lead naphthenate, cobalt naphthenate, zinc naphthenate, cadmium naphthenate, dibutyl tin dilaurate, dibutyl-tin di-2-ethyl-hexoate, stannic octoate and stannic oleate, alone or in admixture with a tertiary amine, e.g. triethylene diamine or 1:2:4-trimethyl piperazine. The examples describe the preparation of polymers from:-(I) tolylene diisocyanate, 4:41 - methylene - bis - (2 - chloroaniline), stannous octoate and (A), (B) and (C) polyoxypropylene glycol and (D) and (E) a polyoxypropylene adduct of trimethylol propane; (II) polyoxypropylene glycol, stannous octoate and (A) 4:41 - diamino - 3:31 - dichlorodiphenyl and tolylene diisocyanate and (B) 4:41-methylene-bis - (2 - chloroaniline) and 4:41 - diphenylmethane diisocyanate; (III) polyoxypropylene glycol, tolylene diisocyanate, 4:41-methylene-bis-(2-chloroaniline) and (A) lead naphthenate, (B) cobalt naphthenate and (C) zinc naphthenate, and (IV), (V) and (VII) polyoxypropylene glycol, 4:41 - methylene - bis - (2 - chloroaniline), tolylene diisocyanate and stannous octoate.
Patent GB-412003-A (GB)
Title: Improvements relating to labels or tags
IPC: G09F3/18
Filed: 1933-03-24
Abstract: 412,003. Labels &c. AIRCRAFT COMPONENTS, Ltd., and DOWTY, G. H., Grosvenor Place South, Cheltenham, Gloucestershire. March 24, 1933, No. 8986. [Class 73.] A label, which may be used for horticultural purposes, comprises a member 2 of sheet metal formed, preferably, with a spike portion 1, and having recessed edges 3 adapted to receive and locate the bent portions of a piece of metal foil 4 capable of receiving suitable markings, a slip of paper 5 being provided in a recess 6 of the member 2 so as to be located between this member and the foil 4.
Patent GB-566741-A (GB)
Title: Manufacture of sulphur-containing dyestuffs
IPC: C09B47/26
Filed: 1943-07-07
Abstract: Sulphur-containing dyestuffs, capable of dyeing cotton from a sodium sulphide vat, are obtained by heating a sulphonyl chloride of a metal-containing or metal-free phthalocyanine with a thioamide containing at least one -CS.NHR group, wherein R may represent H, alkyl (including allyl) or aryl.  Specified sulphonyl chlorides are copper phthalocyanine-tetra-(4)-sulphonyl chloride, copper phthalocyanine-tri-(4)-sulphonyl chloride, metal-free phthalocyanine-tri-sulphonyl chloride and a copper phthalocyanine polysulphonyl chloride obtained by the action of phosphorus pentachloride in nitrobenzene at 100-110 DEG  C. on a sulphonation product obtained by heating copper phthalocyanine with 25 per cent oleum for 12 hours at 70 DEG  C. and then for 2 hours at 85 DEG  C. Specified thioamides are thioacetamide, thioacetanilide, thiobenzamide, thiobenzanilide, phenyldithiobiuret, thiourea, N-allyl-thiourea, N - methyl - thiourea, N : N1 - dimethyl - thiourea and N : N1 : N1 - trimethyl - thiourea.  In examples: (1) copper phthalocyanine-tetra-(4)-sulphonyl chloride (obtainable by heating tetra-potassium copper phthalocyanine - tetra - (4) - sulphonate with phosphorus pentachloride in nitrobenzene) is heated for 2 hours with thiourea at 170-175 DEG  C.; (2) the thiourea in (1) is replaced by thiobenzanilide; (3) metal-free phthalocyanine-trisulphonyl chloride (obtainable by heating with phosphorus pentachloride in nitrobenzene the sodium salt of the metal-free phthalocyanine trisulphonic acid obtained by direct sulphonation of metal-free phthalocyanine) is heated for 2 hours with thiourea at 170-175 DEG  C.; (4) the thiourea in (3) is replaced by phenyldithiobiuret; (5), (6) and (7), metal-free phthalocyanine-trisulphonyl chloride is heated for 1/2 hour with (5) N-methyl-thiourea, (6) N : N1 - dimethyl - thiourea, (7) N : N1 : N1-trimethyl-thiourea at 120-125 DEG  C.; (8) metal-free phthalocyanine-trisulphonyl chloride is heated for 1/4 hour with thioacetanilide at 110-115 DEG  C.; (9) metal-free phthalocyanine trisulphonyl chloride is heated for 1/4 hour with thioacetamide at 130-135 DEG  C.; (10) copper phthalocyanine polysulphonyl chloride (obtained as above) is heated for 1 hour with thiourea at 170-175 DEG C.  N-Allyl-thiourea is obtained by the action of ammonia on allyl isothiocyanate.
Patent GB-665159-A (GB)
Title: Improvements in or relating to navigational devices
Inventor: EVERITT PHILIP FRANCIS
IPC: G01C21/02
Filed: 1949-04-04
Abstract: 665,159. Navigational instruments. KELVIN & HUGHES, Ltd. April 4. 1950 [April 4, 1949], No. 9126/49. Class 97 (iii). A navigational device whereby a navigator can quickly locate his position after taking sextant readings from two or more heavenly bodies comprises a transparent film or strip provided with a straight centre-line 10 and on which is provided projections of curves 11 of approximately circular shape of equal altitudes on stereographic projections or other projections of like qualities to the scale of the map or chart being employed for navigation, the centres of the curves 11 being on the line 10. The film or strip is adapted for adjustment around an axis 13 perpendicular to the chart and for permitting the navigator to trace the appropriate curve on the chart whilst the film or strip is in position to indicate the curve on the chart. As shown, the curves 11 are in the form of slots so that a pencil can trace them. Alternatively the curves may be in the form of lines, means being provided to support the film at some distance above the map and for moving the film around the said perpendicular axis, and light means being provided for projecting the lines on to the map. The centre line 10 is marked with a scale to indicate nautical miles and a protractor 12 is marked on the film, and has a central protractor hole at 13. The edges of the film are marked off in degrees.
Patent GB-714203-A (GB)
Title: Improvements in rotary meters
IPC: G01F1/08
Filed: 1952-04-10
Abstract: 714,203. Rotary meters. KRIZIK, NARODNI PODNIK, and KRAL, F. April 10, 1952 [April 17, 1951], No. 9184/52. Class 110(2) [Also in Group XXIX] A multiple-inflow, two-way water meter is provided with sets of inlet and outlet ports, at least one set being divided into two groups of which one is traversed directly by the flow, the second set by way of a valve which remains closed at a small rate of flow. Under full flow of water from P to Q, some water passes through, ports 15, to actuate a rotor 4, and leaves through ports 16 leading to Q. The remainder of the water enters the rotor chamber 6 by way of a flap valve 11 and ports 17, and leaves through the ports 16. A small rate of flow cannot open the valve 11. A jacket 10, supported on an abutment 9, has walls near the valves 11, 12 acting as guides to lead water towards the valves. When the flow is from Q to P, the water enters the rotor chamber through ports 16 and leaves through ports 15, and at larger flows opens the valve 12. Both sets of ports, inlet and outlet, may be divided-up into groups containing flap valves. The valves 11, 12, may be replaced by a number of smaller valves. A hollow body 14, acting as a float, may be provided on each valve.
Patent GB-522410-A (GB)
Title: Process for the manufacture of calalysts
IPC: C10G11/04
Filed: 1938-11-25
Abstract: 522,410. Catalytic agents. MOND, A. L. (Universal Oil Products Co.). Nov. 25, 1938, No. 9209/40. Divided out of 522,409. [Class 1 (i)] Catalysts suitable for hydrocarbon conversion reactions are made by mixing separately precipitated hydrated silica and alumina, or: by precipitating either of these in a suspension of the other precipitate, and washing the mixture completely free of combined and absorbed alkali metal ions. The washing may be effected by means of acid, a solution of an ammonium salt, or a solution of an aluminium salt. Specification 392,954 is referred to.
Patent GB-1032131-A (GB)
Title: Improvements in or relating to the diffusion purification of gases
IPC: B01D53/22
Filed: 1964-03-04
Abstract: 1,032,131. Hydrogen diffusion cells. ENGELHARD INDUSTRIES Inc. March 4, 1964 [March 7, 1963], No. 9265/64. Heading B1L. An apparatus for separating hydrogen from a gaseous mixture which comprises an inlet chamber and a diffused gas chamber said chambers being separated by a non-porous H 2 -permeable membrane which is supported by a metal mesh composite structure. The supporting mesh structure comprises a 16 to 32 mesh screen having 30- 60% open area, a coarse mesh screen and optionally a fine mesh screen, the fine or the medium (16-32) mesh screen being adjacent the membrane. The supporting screen may be a dimpled metal plate having openings therein or a woven metal screen which is made of stainless steel and coated with ceramic or pre-oxidised to provide a weld-resistant coating. A laterally perforated honeycomb structive may be used as a support whilst a number of layers of coarse mesh may be welded or wired together to form a support. The membrane may be made of Pt, Pd or alloys thereof. In Fig. 3, H 2  containing gas enters chamber 31 at 37 through steel ring 38 and is distributed throughout chamber 31 by baffles 46 (such as those described in Specification 1, 032, 132). H 2  diffuses through Pd membranes 33 which are supported by woven metal mesh screens 52, 53, 54 and 56, and leaves by outlet 41 is steel ring 39. The end plates 34 and 36 are held by bolts and the rings are sealed by copper gaskets 42, 43, and 44. Gasket 43 is feathered so that it will not tear the surface of membrane 33 whilst the woven screen 56 next to the membrane has its edges turned away from the membrane and also has a flattened surface achieved by rolling. The woven metal screens may be of specified mesh sizes and arranged in a specified series. It is advantageous to roll the screens to remove any sharp edges which would produce cracking in the membrane. .
Patent GB-1490986-A (GB)
Title: Electric current controlling devices
IPC: H01L45/00
Filed: 1975-02-28
Abstract: 1490986 Semi-conductor switching device GENERAL ELECTRIC CO Ltd 28 Feb 1975 [1 March 1974] 9315/74 Heading H1K A negative resistance switching device for controlling current is formed of a Te or Se based chalcogenide glass with constituents in atomic percentages of either 75-80% Te, 0-20% Ge and 2-15% of one or more of S, Si and Sb, or 40-76% Se, 24-40% As and not more than 20% Bi. One preferred switching device has a composition of 76À5% Te, 13À5% Ge and 10% S. This device achieves (1-2) Î 10<SP>5</SP> switching cycles before breakdown. Another preferred composition is 60% Se, 36% As and 4% Bi. The device is made by successive deposition on a glass substrate of a Mo base electrode deposited by RF sputtering, a silica film having an opening and an end portion which expose part of the Mo layer, a sputtered thin film of the chalcogenide glass within the opening and over part of the silica film which is then etched to the desired area, and top electrode layers of Cr and Au. The device then receives contacts of Au to the end portion of the base electrode and on the top electrode.
Patent GB-1533585-A (GB)
Title: Magnetic tape data recording systems
IPC: G11B20/12
Filed: 1976-02-24
Abstract: 1533585 Magnetic tape data recording DATA RECORDING INSTRUMENT CO Ltd 24 Feb 1976 [6 March 1975] 9316/75 Heading G5R A system for recording markers spaced along magnetic tape 13 by a distance which is independent of tape speed includes a decoder 14 which initiates writing of a marker by network 16 and write head 12 when the previously-written marker is detected at downstream read head 11; the marker spacing is thus substantially equal to the head spacing. If data blocks are being written between the markers in the same operation, the initiation of data writing by circuits 18 is made dependent on the completion of marker writing, or is delayed by a certain amount after detection of a marker by decoder 14. The decoder 14 may also be used to recognize synchronizing signals which are used to condition the data read circuits 19.
Patent GB-526705-A (GB)
Title: Improvements in, and connected with, couplings, particularly for vehicles
IPC: B60D1/06
Filed: 1939-03-25
Abstract: 526,705. Vehicle couplings. BROCKHOUSE & CO., Ltd., J., and DEAR, A. T. C. March 25, 1939, No. 9371. [Class 103 (v)] In a ball and socket trailer coupling in which the ball e is retained in the socket d by a handoperated pivoted abutment g, the pivot h is provided with an eccentric bearing whereby the abutment may be adjusted for wear.
Patent GB-289617-A (GB)
Title: Improvements in or relating to gas burners for cooking stoves and the like
IPC: F23D14/06
Filed: 1927-04-06
Abstract: 289,617. Whitelegg, S. H. April 6, 1927. Portable gas stoves. - An atmospheric gas burner adapted to provide an annular flame or separate radiating flames is fitted to a stand having a utensil support k for each radiating flame.
Patent GB-1223658-A (GB)
Title: Method and apparatus for developing electrostatic images
IPC: G03G15/10
Filed: 1969-02-21
Abstract: 1,223,658. Developing electrostatic images. FUJI SHASHIN FILM K.K. Feb.21, 1969 [Feb.21, 1968], No.9537/69. Heading G2H. A process of developing electrostatic latent images comprises applying to the image bearing surface 11 Fig.2 a dispersion of toner in an insulating liquid 5 using a development electrode 2 adjacent the surface 11, and subsequently applying an electric field between the electrode and recording member which causes excess toner not forming part of the developed image on the surface 11 to be electro-phoretically attracted to the electrode 2. In operation, a tank 3 is filled, to submerge the electrode 2, with developer liquid 5 containing toner particles 40. Recording member 1 is placed beneath electrode 2 with its' conductive backing connected to a circuit 4. A switch S 1  is closed during development effected by electrostatic attraction of toner particles to negatively charged areas 10. Switch S 1  is then opened and switch S 2  is closed to produce an electric field cancelling the field created by the image, thereby attracting to the electrode 2 particles 40 not forming part of the developed image. The process may be used in a camera, Fig. 3 having a strip 1 of recording material charged before exposure through an objective L. A donor strip 2 carries a thin pasty layer of insulating liquid developer. A strip carrying developer pods may replace the donor strip.
Patent GB-162514-A (GB)
Title: An improved plastic composition for producing a jointless floor covering
IPC: C04B28/32
Filed: 1920-04-06
Abstract: 162,514. Roberts, M. April 6, 1920. Plastic compositions containing fibres, oxychlorides, &c.-A jointless floor covering is made by mixing calcined magnesite with an equal weight of sawdust, cork dust, or wood pulp moistened with magnesium-chloride solution, adding 5-10 per cent of French chalk, and 12¢ per cent of colouring-matter, and subsequently adding magnesium-chloride solution at 28‹ BeaumÚ till the desired plasticity is obtained. The colouring-matter may be omitted. According to the Provisional Specification, asbestos may also be used as an ingredient.