baber/WOPTO huggingface dataset:
Patent GB-813211-A (GB)
Title: Zigzag mechanism for sewing machine
IPC: D05B19/00
Filed: 1956-12-05
Abstract: 813,211. Sewing machines. SINGER MANUFACTURING CO. Dec. 5, 1956 [Dec. 5, 1955], No. 37106/56. Class 112 Needles, shifting laterally. The pivoted needle-bar carrier 11 is vibrated by mechanism including a pitman 19 actuated by a pivotally mounted element 26 carrying a slide 23 in which is journalled a pin 22 having a reduced eccentric portion 21 embraced by the end of the pitman. When the slide is moved along the guide-rods 24 on the element to vary the amplitude of vibration, pins 49 on the element, which engage slots 50 on the flange 51 of the pin 22, effect rotation of the pin, so that the pitman is moved in an arc about the pivot pin 20 and the element is undisturbed. This adjustment is effected by manual rotation of a shaft 40 provided with an arm 39 connected by a link 36 to the pin 22. The element is secured by a pivot pin 27 to an arm 29 of a bell-crank lever pivoted on a shaft 30 which may be manually actuated to vary the needle position. Normally the element is held frictionally against movement relative to the bell-crank by a spring-loaded plunger 33 and a lip 31 carried by the bell-crank. On rotation of the shaft 30 a stud 43 which is located eccentrically in one end of the shaft and which engages a slot in the rear face of the element 26 alters the angular position of the element relative to the arm 29 of the bellcrank. Adjustable screws 47 limit this relative movement. A second arm 35 of the bell-crank is connected by a link 52 to an arm 53 on a cam follower shaft 64 on which is slidably keyed a follower 57 which may be selectively engaged with any of the twenty-four pattern cams 63 on a shaft 64 driven from the main shaft 6.
Patent GB-331798-A (GB)
Title: Guiding device for the work-carrying face plate of vertical lathes
IPC: B23Q1/26
Filed: 1929-12-04
Abstract: 331,798. Berthiez, C. Dec. 11, 1928, [Convention date]. Faceplates for vertical lathes may be adapted for large work without their efficiency for small work being impaired. Slideways a<2>, c2 on the faceplate and machine bed respectively form bearing surfaces, and additional surfaces a<4>, g may be brought into engagement for large work by a wedge member h slidable diametrically of the faceplate to raise or lower the bearing member g. The Specification as open to inspection under Sect. 91 (3) (a) describes modifications in which the bearing surface g may be replaced by rollers, or an outer annular portion carrying a bearing surface such as a<4> may be detachable, the lower bearing surface being stationary. This subjectmatter does not appear in the Specification as accepted.
Patent GB-1030869-A (GB)
Title: Improvements relating to loud-speakers
Inventor: CASTELLAIN ALFRED POURTALES
IPC: H04R1/40
Filed: 1962-10-17
Abstract: 1,030,869. Loud-speakers. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Sept. 27, 1962 [Oct. 17, 1961], No. 37201/61. Headings H4J and H4X. Two sub-frames 1, 2 carrying loud-speaker units 8 are hinged at 4<SP>1</SP> and may be used as a concentrated source, as shown, or pivoted into alignment and secured by a catch 9 to form a line source. Each sub-frame comprises side and end walls 3, 4, 5 with stiffening struts 7 and a front baffle and a rear wall beyond which the side and end walls project to provide storage space for ancilliary equipment. This space may be enclosed, when the sub-frames are disposed as shown, by a single back member integral with a top cover with carrying handle.
Patent GB-319170-A (GB)
Title: Improvements in and connected with heels for footwear
IPC: A43B21/44
Filed: 1928-12-18
Abstract: 319,170. Crookshanks, J. Dec. 18, 1928. Protectors, securing.-The base of a heel is formed with a recess A in which is secured a plate provided with slots and a hole central of the heel. A heel pad is secured to a plate F, Fig. 1, to which is secured a plate H provided with projecting lugs corresponding to the slots. and with a hole corresponding to that in the first plate. The heel pad is positioned with its lugs engaged in the slots and is secured by a screw L. In a modification, the plate in the recess A may be omitted, and the slots formed in the heel itself. In another modification, the plate M, Fig. 11, secured in the recess A is bent over at its forward end, the groove so formed being slotted to co-operate with a forward projection or projections on the plate P secured to the heel pad, the vertical slots being omitted. The plates which are secured together by the screw L are formed with complementary countersinks at the screw holes. Specification 249,047 is referred to.
Patent GB-1415448-A (GB)
Title: Colour television camera systems
IPC: H04N9/07
Filed: 1973-08-07
Abstract: 1415448 Colour television MAGNAVOX CO 7 Aug 1973 [6 Nov 1972] 37346/73 Heading H4F To reduce variation in the saturation of an image reproduced from the output of a onetube colour television camera due to changes in the level of the illumination of a scene viewed by the camera a signal indicative of the amplitude of either the chrominance or luminance component of the tube ouput is produced and used to reduce the gain imparted to the luminance component relative to that imparted to the chrominance component as the illumination level increases. A vidicon tube 17 is provided with a filter 15 having a first series of alternately red-blocking and transparent stripes and a second series of alternately blue-blocking and transparent stripes at an angle to the first series, a composite output signal having luminance and chrominance components being derived from the tube 17, the chrominance component being formed of either one phase and amplitude modulated subcarrier or two separate subcarriers. The composite output signal from vidicon tube 17 is passed via a preamplifier 23 to a variable impedance network including a resistor 25 in parallel with a series tuned circuit 27, 29, 31 which has a lower impedance at the frequency of the chrominance component than at the frequency of the luminance component, the impedance of resistor 25 being lower than that of the series tuned circuit to the luminance component but being higher than that of the series tuned circuit to the chrominance component. The output of the variable impedance network is, after amplification at 35, split into its luminance and chrominance components, the luminance component being passed to a peak detector 43 to derive a signal to control the variable impedance network via a field effect transistor 33. An increase in the level of illumination causes an increase in the output of peak detector 43 which increases the impedance of field effect transistor 33 and decreases the luminance component gain while having substantially no effect on the chrominance component gain, thus preventing a reduction in saturation. The luminance component is thus maintained at a substantially constant amplitude despite changes in the illumination level.
Patent GB-323899-A (GB)
Title: Improvements in dyeing apparatus
IPC: D06B5/00
Filed: 1928-12-18
Abstract: 323,899. Johnson, J. Y., (Hussong Dyeing Machine Co.). Dec. 18, 1928. Circulating liquids through materials.-In order to steady the currents in a vat for dyeing skeins suspended therein, and wherrein the liquid is circulated by propellers 13, a large overflow gutter 6 is provided around one end and the sides, which gutter slopes as shown at 7 so as to return the liquor to the propellers. A curved guide 18 directs the current through equalizing distributing-baffles 1d to the perforated false bottom 1a and vertical passage 12a which passage has a non-return valve 19 at the top. On reversal of the rotation of the propellers, the liquor overflows from the gutter throughout its length into the dye chamber, the valve 19 closing.
Patent GB-1085611-A (GB)
Title: Improvements in and relating to dehydration processes
Inventor: RIOGH SEAMUS MACGIOLLA
IPC: A23P1/14
Filed: 1963-09-23
Abstract: Fruit, meat, and vegetable pieces are partially dehydrated to a moisture content within the range 10-50% wt., calculated on the total weight of material, and are then subjected in a sealed vessel to steam at 20-150 psig.  Thereafter the pressure is released so that it falls instantaneously to atmospheric or subatmospheric pressure, whereby the pieces are puffed without undue scorching.  Prior to the partial dehydration, the pieces may be blanched with steam or hot water, and may be sprayed with sodium sulphite.  The puffed pieces may be further dehydrated to less than 7% wt. moisture.
Patent GB-1205858-A (GB)
Title: Packing bag
IPC: B65D30/00
Filed: 1968-08-06
Abstract: 1,205,858. Carrier bags. BRAMSON'S PAPIER INDUSTRIE N.V. 6 Aug., 1968 [16 Aug., 1967], No. 37443/68. Heading A4G. A paper sheet, Fig. 1, is formed into a bag (Figs. 3, 4) by folding top strip 4 inwardly and applying adhesive thereto, applying a self-adhering layes to flap 10, folding bottom strips 6, 7 inwardly about line 9 and folding strip 8 outwardly and applying adhesive thereto, portion 13 of strip 7 sticking to flap 10 (Fig. 2), and folding the sheet about line 5 so that side 2 sticks to strip 4 and strip 6 sticks to strip 8, thereby providing a bag with a folded bottom. Before use, a strip 7 is torn at a perforation 14 so that the bottom 6, 7, 8 can be flattened (Fig. 4). The open end is closed by flap 10 which is folded about line 11 and stuck to the outer surface of side 2, which may also have a self adhering layes. A carrying handle (15) is provided. Alternatively strip 7 may be cut at line 14 or portion 13 may be removed.
Patent GB-324191-A (GB)
Title: Process and machine for simultaneous dyeing and finishing using the same treating liqid
IPC: D06B3/10
Filed: 1928-12-19
Abstract: 324,191. Heltewig, H. Dec, 19, 1928. No Patent granted (Sealing fee not paid). Ball and float valves. -In apparatus for simultaneously dyeing and finishing a fabric in the same liquid in a bath a, the liquor is circulated by a pump e and is maintained in quantity by a float q which on falling opens a valve m in a storage tank k, permitting fresh liquor to flow to the delivery pipe of the pump. To counteract the suction effect on the valve m due to the flow in the delivery pipe, and to render the valve sensitive, its supporting rod n is made tubular so as to admit air beneath the valve.
Patent GB-361653-A (GB)
Title: Improvements in or relating to playing courts
IPC: E01C13/06
Filed: 1930-12-12
Abstract: 361,653. Tennis and like courts. OTTO, K. W., Haus Bergfrieden, Bad Pyrmont, Pyrmont, Hamel, Germany. Dec. 12, 1930, No. 37505. Convention date, Dec. 13, 1929. [Class 20 (iv).] Playing courts for tennis and the like, in order to necessitate less frequent watering and rolling, are provided with a basic layer of slag or the like and a playing surface consisting of at least two layers of sand, gravel, or ground stone to both of which are added marl or gravel, the court being poor in lime. A layer intermediate of the upper and basic layers is preferably provided consisting of medium sized marl or gravel with admixture of clay.
Patent GB-1448166-A (GB)
Title: Road rollers
IPC: E01C19/26
Filed: 1974-08-28
Abstract: 1448166 Road rollers KOEHRING GmbH 28 Aug 1974 [8 Sept 1973] 37640/74 Heading B7H Yokes 16, 18 of road roller rolls 12, 14 are pivotally interconnected by intermediate frame member 20 and piston/cylinder assemblies 26, 28 which control relative angular and relative offset movement of the rolls. Variation of the angular relationship alone, e.g. for steering, is achieved by actuating only assembly 26. Lateral off-set only is attained by operating only assembly 28. Steering with lateral off-set involves actuation of both assemblies. The roller is powered by an hydraulic pump/motor arrangement.
Patent GB-959078-A (GB)
Title: Improvements in or relating to high frequency bridge circuit arrangements
IPC: H03H7/48
Filed: 1962-10-05
Abstract: 959,078. R.F. couplings. TELEFUNKEN PATENTVERWERTUNGS G.m.b.H. Oct. 5, 1962 [Oct. 5, 1961], No. 37688/62. Heading H4A. In a bridge circuit 1, 2, 3, 4 between two H.F. sources (e.g. radio transmitters), a load RV (e.g. an aerial) and a load-balancing resistor RLA, switches S1 S2 are provided at respective mid-points of sections 1, 3 and 2, 4 whereby at will either both sources feed only the load RV or one source feeds only load RV and the other source feeds only resistor RLA; and it is arranged that in the first case that the H.F. outputs at load RV are in phase by feeding energy in phase quadrature from the sources at terminals 1, 3. In the first embodiment the bridge sections are quarter-wavelength coaxial feeders of the denoted characteristic impedances ; or the bridge sections may each be of length (2n-1)#/4 where n is any positive integer and # is the mean operating wavelength. In further embodiments: (1) the sections 1, 3 and 2, 4 are lumped capacitative reactances, Fig. 2 (not shown), or lumped inductive reactances, Fig. 3 (not shown); (2) all the bridge sections are lumped inductive reactances. Fig. 4 (not shown); (3) Lecher lines are utilized.
Patent GB-998401-A (GB)
Title: Improvements in or relating to wire trays
Inventor: BESWICK RICHARD RAWSTHORNE
IPC: B21F27/12
Filed: 1962-10-05
Abstract: 998,401. Wire trays. HY WHITTLE Ltd. Oct. 2, 1963 [Oct. 5, 1962], No. 37730/62. Headings A4D, A4H and A4W. [Also in Division B8] Wire trays, which may be stacked one above the other or nested one within another, have wire loops 3, 4 on each two opposite sides of the tray arranged asymmetricaly with respect to the respective side of the tray. Adjacent each loop 3, 4 transverse wires 5 of the tray stop short of the edges of the tray to form spaces 6. Thus, when nesting, the loops of a lower tray pass through the holes 6 of the upper trays and, when stacked, alternate trays are rotated through 180 degrees so that their loops 3, 4 engage the bottom of the tray above.
Patent GB-577970-A (GB)
Title: Improvements relating to the purification of calcium sulphate
IPC: C01F11/46
Filed: 1938-12-29
Abstract: 577,970. Calcium sulphate. KUBELKA, P. Dec. 29, 1938, No. 37789. [A Specification was laid open to inspection under Sect. 91 of the Acts, June 30, 1939]. [Class 1 (iii)] Calcium sulphate of natural or artificial origin is purified by dehydration to as far as the hemihydrate at least, and subjection in contact with a solution of electrolytes which accelerate catalytically the mutual transformation of the various forms of calcium sulphate, to slow crystallisation to the d:hydrate, whereupon the impurities precipitated by the crystallisation are mechanically separated from the pure gypsum. The initial dehydration may be carried out by dry methods but is preferably carried out in the solution of the electrolyte used for crystallisation. The hemihydrate may be produced by boiling crude gypsum in the solution whilst insoluble anhydrite may be produced by heating crude gypsum in the form of soluble anhydrite or partially dehydrated gypsum with seed material of insoluble anhydrite or hemihydrate, in the solution of the electrolyte at relatively high temperatures preferably above 80‹C. The suspension of hemihydrate is allowed to stand but that of insoluble anhydrite is rapidly cooled to about 40‹C. for crystallisation. Crystallisation normally takes 12 to 24 hours part:cularly in the presence of previously formed coarse dihydrate or plaster of paris. If the solution is disturbed the period is greatly increased with the formation of fine needle shaped crystals which are also formed when crystallisation is too rapid. These crystals may be transfored to the desired coarse form by the addition of ammonium salts to the solution. Suitable solutions for dehydration and crystallisation are 1 to 10 per cent. or more solutions of, sulphuric, hydrochloric or other mineral acids, alkali sulphates, ammonium chloride or sulphate, or sodium chloride. The crude gypsum may be freed from coarse impurities such as sand by a preliminary washing.
Patent GB-619932-A (GB)
Title: Improvements in or connected with chairs
IPC: A47C7/74
Filed: 1946-12-24
Abstract: 619,932. Chairs; cushions. McCULLOUGH, R. H. Dec. 24, 1946, No. 37884. Convention date, Nov. 13, 1945. [Classes 52 (ii) and 52 (iv)] [Also in Group X] In a chair, more particularly a theatre chair, air under pressure from a conduit 31, which may be common to a row of chairs, is released between the cushion squabs 30 with which the seat and back are upholstered. The squabs are preferably detachably secured by hooks to hingedly connected casings 15, 21, the seat-supporting casing 15 being slidable on rollers 20 to move forwardly and rearwardly in the side standards 1 1, the connection 41, 43 to the conduit accordingly being telescopic, and the upper end of the back-supporting casing 21 having a pin and slot mounting on the standards. A lever 50 controls a shutter 44 to regulate the air supply.
Patent GB-974335-A (GB)
Title: Improvements in or relating to an electronic surface inspection system
Inventor: LAYCAK JOHN FRANCIS
IPC: G01N21/89
Filed: 1961-10-23
Abstract: 974,335. Photo-electric defect detection JONES & LAUGHLIN STEEL CORPORATION. Oct. 23, 1961, No. 37921/61. Heading G1A. [Also in Division G4] In a system for detecting surface imperfections, for example in sheet tin, the material 10 Fig. 1 is conveyed past a photo-electric sensing arrangement 16, 20 which responds to the different reflective properties of imperfect as opposed to perfect surfaces and the resulting electric signal, if of a sufficient amplitude, (i.e. if the transverse dimension of the imperfection 14 is sufficiently large) opens a gate 26 to allow pulses produced by the motion of the material to pass to a defect counter 34. The defect counter is reset to a predetermined number (e.g. 15,000) at 5 feet intervals by a displacement counter 30 and is stepped backwards by the defect representing pulses so that it only reaches zero, to produce an output, if the area of surface imperfection in a 5 feet length of material exceeds a certain amount. The output from the defect counter can either cause a faulty strip of material to be rejected or it can control a printing device. The Specification also mentions that hot strip could be inspected by the same system using the radiation from the strip itself instead of reflected light.
Patent GB-1099122-A (GB)
Title: Improvements in fluid filters
Inventor: STRIPP PETER WILLIAM
IPC: B01D46/24
Filed: 1963-09-26
Abstract: 1,099,122. Fluid filter element. TECALEMIT (ENGINEERING) Ltd. Sept. 15, 1964 [Sept. 26, 1963], No. 37925/63. Headings BID and BIT. A filter element 1 for filtering oil or air is sealed to its casing by at least one pair of annular, resilient lips 13, 14, 18, these lips projecting from the element and deforming during assembly in the casing to produce a partial vacuum between the lips of each pair which holds them in contact with a casing member 26, 36, 32. As shown, the end caps 2, 3 of a filter element 1 are made of polyvinylchloride or synthetic rubber and have integral radially inwardly extending lips 13 (Figs. 1, 6, not shown), which seal with central stud 26, and concentric, axially extending lips 14, 18, which seal with flat plates 36, 32 (Fig. 4, not shown). The casing comprises an inlet 22 and outlet 23. The element 1 comprises an annulus of pleated or spirally-wound paper (Fig. 2, not shown) or an extruded or moulded 'star-section' of foam rubber or plastics. In Fig. 5 (not shown) retaining spring 37 and plate 36 are omitted and the element is attached to plate 32 only by the suction in deformed lips 18. Fig. 7 (not shown) illustrates a pleated paper element whose pleat fold lines extend radially between two neoprene sealing annuli, and which may have integral lips as described above to seal the element in its casing, described in Specification 909,891. The pairs of lips are described above as integral with end caps or sealing annuli, but they could be made as ring elements of more resilient material and adhered to the end caps or sealing annuli.
Patent GB-1267462-A (GB)
Title: BENZO[d,e]QUINOLINE DERIVATIVES AND A PROCESS FOR THE MANUFACTURE THEREOF
IPC: C07D221/14
Filed: 1970-08-06
Abstract: 1,267,462. Benzo[d,e]quinoline derivatives. F. HOFFMAN-LA ROCHE & CO. A.G. 6 Aug., 1970 [19 Aug., 1969], No. 37960/70. Heading C2C. Novel compounds I in which R 1 , R 2  and R 3  are 1-7C alkyl, are prepared by reacting compounds II in which R 4  is H or 1-7C alkyl, with a cyclizing agent, e.g. oleum, HF or polyphosphoric acid. Alkaloids of the nuciferine family may be prepared from compounds I, e.g. nuciferoline is prepared by reaction of I where R 1 , R 2  and R 3  are CH 3 , with methyl ethynyl ketone.
Patent GB-1126518-A (GB)
Title: An arrangement for the excitation of synchronous machines
IPC: H02K19/26
Filed: 1967-08-18
Abstract: 1,126,518. Automatic voltage control. SIEMENS A. G. Aug. 18, 1967 [Aug. 19, 19661, No.38270/67. Heading G3R. [Also in Division H2] The excitation-energy for a regulator 1 which controls a synchronous generator 3 by way of exciter 4, is drawn from tappings X 1 , Y 1 , Z 1 , on the generator output windings, these tappings selecting parts of the winding having a high winding- factor to the 5th harmonic but low factor to the fundamental, so that the excitation is independent of load conditions, even short-circuit.
Patent GB-1131885-A (GB)
Title: A process for the production of polyurethane elastomer
Inventor: KAZAMA SEIJI
IPC: C08G18/66
Filed: 1967-08-21
Abstract: 1,131,885. Polyurethane elastomers; foams. TAKEDA CHEMICAL INDUSTRIES Ltd. 21 Aug., 1967 [29 Aug., 1966], No. 38398/67. Headings C3C and C3R. Polyurethane elastomers are prepared by reacting a non-halogenated organic diisocyanate with a mixture of a lactone polyester polyol having a molecular weight of 1700 to 3000 and an aliphatic diol having a molecular weight of 60 to 150, the average molecular weight of the mixture being 800 to 2000 and the NCO/ hydroxy group ratio being 1À2 to 4, and finally curing the reaction product. The polyester may be prepared by reacting a lactone with a difunctional initiator, e.g. a diol, diamine or aminoalcohol. Specified lactones are valerolactone, caprolactone, enantholactone and methyl caprolactone. Examples of aliphatic diols which may be mixed with the polyester are diethylene glycol, 1,2- and 1,3-propylene glycols, 1,3- and 1,4-butanediols, 1,5-pentanediol, 1,6-hexanediol, 1,4-cyclohexanediol and mixtures thereof. Minor amounts of polyether polyols and lactone polyester polyols having 3 or more OH groups may be included in the mixture. The diisocyanate may be aliphatic or aromatic, e.g. tolylene, diphenylmethane, dianisidine, biphenylene, naphthylene, phenylene, dimethylbenzene, tetramethylene and hexamethylene diisocyanates. A catalyst, e.g. tertiary amine, and a gelation inhibitor, e.g. benzoyl chloride, may be used. The pre-polymer obtained is then cured with an agent having 2 or more active hydrogen atoms, e.g. water, amines, polyols or aminoalcohols, the preferred being o,o<SP>1</SP>-dichlorobenzidine or methylene-bis- (2-chloroaniline). Cellular products may be obtained by including a blowing agent in the curing process. This may be water or a halogenated hydrocarbon. Conventional foamstabilizers, surface-active agents and other additives may be added.
Patent GB-839836-A (GB)
Title: Sabre saw
IPC: B23D49/16
Filed: 1958-11-28
Abstract: 839,836. Sawing. STANLEY WORKS. Nov. 28, 1958 [Dec. 3, 1957], No. 38424/58. Class 145. A portable reciprocating power saw has the vertical unbalance forces of the saw blade carrier 34 balanced by a normal rotating counterwieght 50 and the horizontal unbalance forces of the rotating counterweight are balanced by a reciprocating counterweight 54. The carrier 34 is reciprocated by a slider 42 which engages in a transverse crosshead 40 on the carrier and is journalled on a crank pin 44 integral with a bush 45 having a gear 46 meshed with a drive pinion 48 on a motor shaft 18. A slider 64 is also journalled on the crank pin and is engaged in a slot 58 in the counterweight 54 to reciprocate it in tracks 56. In a modification, the rotating and reciprocating counterweight are each in two parts fitted on opposite sides of the saw blade carrier and an elongated crank pin extends through a transverse crosshead or yoke on the carrier to drive the four counterweight parts.