baber/WOPTO huggingface dataset:
Patent GB-141536-A (GB)
Title: Improvements in or relating to machines for cutting hacksaw blades
IPC: B23D63/00
Filed: 1919-05-23
Abstract: 141,536. Patent File & Tool Co., and Edmunds, H. May 23, 1919. Milling-cutters; saws, sharpening.-In a machine for cutting hack-saw blades of the kind described in Specification 140,654, the blade blanks 2 are held in a clamp 1 having undercut portions 5 with which jaws 7 on an angle plate 6 can engage. By set-screws 12, the plate 6 can be adjusted so that the blades 2 are at the desired angle to the milling-cutter, which comprises tools 16 held in a holder 17 on the shaft 18. The plate 6 is mounted on a slide 10 moved step by step by a screw 13 with ratchet-wheel 14 and pawl 15, operated 'by the weight 28 pivoted at 27, Fig. 3, and having a lever 29 with a tumbler 30 bearing against a wheel 25 revoluble on the laterallyslidable cutter shaft 18, so that as the cutter is withdrawn at intervals, the ratchet is operated to feed the blanks forward one tooth. The withdrawal of the shaft 18 is effected bv a cam 22 engaging a roller 31 on a fixed bracket, and mounted on the wheel 25, driven through reduction gearing from the shaft 18.
Patent GB-455983-A (GB)
Title: Improvements in kerr cells
IPC: G02F1/07
Filed: 1935-05-01
Abstract: 455,983. Electro-optical light-valves. BELL, J., 13, Lucerne Road, Highbury London, and WORTHINGTON, W. S., Little Pipers, Clay Hill, Enfield, Middlesex. May, 1, 1935, No. 13022. [Class 40 (iii)] A receptacle for a Kerr cell consists of tubular relativelv thick glass provided exteriorly with diametrically opposed flat portions and threaded at its open end to receive a closure cap which has a threaded flange. As shown, the call comprises interleaved gold or silver plated metal plates a, a<1> separated by ruby mica washers c, alternate plates being provided with tags b, b<1> at opposite ends. A glass block d is placed on each side of the assembled pack and the whole clamped together by two metallic bands e, e<1>, the free ends of which are secured by bolts and nuts f. The ends of the tags b, b<1> of each group of plates a, a<1> are united as by soldering and a lead g extends from each joint to the adjacent band where it is gripped by the nut and bolt f. The lower ends of the bands e, e<1> are bent over and clamped by nuts o to the upper ends of contact pins m, m<1> which pass through insulating bushes k, land k<1>, l<1> in a metal cap h adapted to screw on a glass receptacle p containing nitrobenzene and having oppositely disposed flat portions p<1> on its outer surface. A cork disc i and non- inflammable celluloid disc are provided inside the cap h and, if desired, the edge of the flange of the cap may be sealed with a gummed strip of paper or with quick drying varnish or cellulosic material.. Two further pins r may be provided, in which case, the disposition of the pins may be such that the cell can be plugged into any normal four pin valve holder. One or both of the pins r may also be made removable to allow of introduction of fluid into the receptacle. According to a modification, Fig. 7 (not shown), the cap h is made of a synthetic resin product and is provided with a metallic reinforcing piece where the flange joins the cap proper. With this arrangement, the members k, l and k<1>, l<1> may be dispensed with.
Patent GB-310480-A (GB)
Title: Trigger device for automatic fire arms
IPC: F41A19/45
Filed: 1929-04-26
Abstract: 310,480. Ceskß Zbrojovka Akciova Spolecnost v. Praze. April 26, 1928, [Convention date]. Breech actions, sliding breech-block.-Relates to automatic fire-arms of the kind in which a pivoted hammer is engaged by a pair of hooks on an anchor member rocked by the trigger. According to the, invention, the anchor member has three arms, an arm 9 engaged by the arm 12 of a trigger 11, an arm 7 formed with a hook 14 for engagement with a bent 6 on the hammer 1, and an arm 8 to which is pivoted a pawl 16 for engagement with a bent 5 on the hammer. The hammer 1 is pivoted at 2 and is under the influence of a spring 3, which also acts on the pawl 16; and This pawl bears against the anchor member to which the spring pressure is therefore also transmitted. When a shot is fired, the hammer is cocked by the recoiling breech-bolt 19 or its carrier 20, and bears against the underside of the bolt-carrier 20 and the bolt 19, and presses the bolt against the. casing 23. This pressure holds the breech open, until the trigger is pulled. The pawl 16 then depresses the hammer, thereby releasing the breech-bolt, which closes the breech. When the trigger is released, the pawl 16 goes out of engagement, and the hammer is held cocked by the hook 14; and a second pull of the trigger is required to disengage this hook and release the hammer; the spring 3 opposes this second pull sufficiently to prevent unintentional firing.
Patent GB-673272-A (GB)
Title: Improvements in or relating to looms
IPC: D03D49/38
Filed: 1950-05-24
Abstract: 673,272. Checking picking sticks in looms. ZANGER, F. May 24, 1950 [May 28, 1949], No. 13074/50. Class 142(iii) [Also in Group XXXII] A pneumatic buffer, checking the power stroke of a picking stick, comprises a piston 7 in a cylinder 6, a rubber-faced block 9 on a piston rod 10, and air relief apertures 15, 17. The apertures 15 are arranged axially or longitudinally and may be covered by slide valves which vary the checking effect. Adjustment of a screw cap 12, locked by a ring 16, also varies the checking effect, and adjustable caps may be provided at both ends of the cylinder. A rubber ring 14 takes the impact on its return stroke. The moving parts may be made of lightweight metal.
Patent GB-564681-A (GB)
Title: Improvements in and relating to snap action devices particularly suitable for electric switches
IPC: H01H13/36
Filed: 1943-08-13
Abstract: 564,681. Snap-action switches; switch contacts. BRITISH THOMSON-HOUSTON CO., Ltd.- (General Electric Co.). Aug. 13, 1943, No. 13135. [Class 38 (v)] A snap - switch, suitable for controlling fractional h.p. capacitor motors, comprises a slotted spring strip 11 of the shape shown in Fig. 4, carrying contacts 18, 19 co-operating with fixed contacts 20, 21 carried by L-shaped members 25, which are frictionally held in the base by bent-out ears 27 and have projecting ends adapted for connection to leads. The space between the arms 16, 17 receives the shank of a press-button operating member, the button 31 of which is frictionally secured to the shank by curved upper parts of a single spring member or, as shown, of a pair of springs 32, the lower parts of which are bent to provide pivots for arms 16, 17. Depression of button 31 causes the arms 16, 17 to move over centre with respect to the plane of strip 11, the latter then engaging contacts 20. The over-centre movement is due to combined deformation of springs 32 and arms 16, 17, which reinforce the contact-pressure in both switch positions. In order to prevent collective movement of the strip and contacts away from contacts 20, 21, movement of the button in both directions is limited by compression of the return spring 35 and by a flange 37 on the button respectively.
Patent GB-1388968-A (GB)
Title: Processing drum for treating hides
IPC: C14C15/00
Filed: 1973-03-20
Abstract: 1388968 Rotary drum apparatus COLOMER MUNMANY SA 20 March 1973 [27 March 1972] 13187/73 Heading D1L [Also in Division C6] A cylindrical type drum for hide treatment processes is arranged to rotate about the axis of the cylinder 1 and has two ducts 6, 7 extending around more than 180 of the outside of the drum cylindrical face, the ducts communicating with the interior of the drum through respective connections arranged diametrically opposite each other, the other ends of the ducts being presented in the same direction and also being at diametrically opposite sides of the drum, the arrangement being such that loading and unloading is automatically accomplished through the ducts upon reversal of the direction of rotation of the drum. Preferably the ducts are rectangular and are adjacent one another on the outside of the drum. Within the drum two perforated truncated cone-shaped partitions 4, 5 may define spaces which divide the interior into a central 15 and two side chambers 16, 17 in one of which is located an eccentrically disposed container 18 with a radial and a central axial opening. The axial opening extends through the outer end and is located in one of the chambers, drawing in liquid to return it, through a central inlet of the opposing outer end panel, into the chamber defined by the other perforated end panel, to be incorporated with the remainder of the fluid through the perforations in the panel.
Patent GB-874949-A (GB)
Title: Power-driven pulley block
IPC: B66D3/22
Filed: 1959-04-20
Abstract: 874,949. Chain hoists. MAIRE, C. A. April 20, 1959 [June 26, 1958], No. 13379/59. Class 78(5). Air motor 1, Fig. 1, drives load sprocket 16 via shafts 3a, 3b, pinion 12, double planet gear 13a, 13b and fixed internal gear 14, the power being transmitted by gear 13b to internal gear 5 integral with the load sprocket. Manual control is effected by shaft 23a which is rotated to effect two things: to release brake 20 by means of cam 23 and to operate start the motor 1 by means of arm 32. Air valves (Figs. 2, 3).-Assume that shaft 23a is rotated clockwise to shift valve 31 rightwards. Compressed air from inlet 28 passes through duct 9a, chamber 46, passage 51, duct 45 and so to intake chamber 9 and duct 42 to drive the motor. There are two exhausts. Main exhaust is through ducts 47, chamber 10, chamber 49 and exhausts 100. Exhausts 100 may be varied by nut 36 to vary the motor speed. Auxiliary exhaust is through duct 41, chamber 8, duct 8a, chamber 44, duct 43, passage 54 and so to exhaust 23b. The exhausts are blocked by porous material to deaden sound. Similarly, if shaft 23a is rotated counter-clockwise the motor is driven in the opposite direction. If desired, the two valves may be displaced by an air piston, which is manually controlled, so as to effect the same movements as above.
Patent GB-581091-A (GB)
Title: Improvements in or relating to methods of, and apparatus for, the combustion of gaseous fuel
IPC: F23C3/00
Filed: 1944-07-13
Abstract: 581,091. Combustion chambers of furnaces. FORRESTER, H. J. C. (Selas Corporation of America). July 13, 1944, No. 13395. [Class 51 (i)] [Also in Group XI] A gas burner comprises a substantially closed chamber with an inlet having a number of small passages to which gas mixture is supplied, an inner lining of high temperature refractory material being formed with a single restricted outlet from which issues a stream of high temperature combustion products at a high velocity. As shown in Figs. 1 and 2, the burner comprises a metal shell 11 secured to a base 12 and enclosing the refractory body made in two parts 21, 22, the former having a single orifice 25. The inlet passages are formed by channels 28 in a refractory, threaded member 27, having a flattened head, screwed into a nipple connection 14. The outlet may be formed as a long, narrow slit in a projecting portion of the lining, or as a ring. The metal shell may be fitted with a jacket through which the fuel mixture passes to the inlet, and the inner walls of the lining may be ridged. Figs. 12, 13 and 14 show a form in which an elongated and irregular outlet 25e is located in a recess 49 in which the work may be placed. The base has a number of separate inlets 15e, the fuel mixture passing through passages 41e formed between thin plates stacked together ; cross ribs 46e are provided in the inlet chambers 34e. The combustion chamber 23e is elliptical in section and the casing is fitted with a cooling jacket 11e.
Patent GB-209664-A (GB)
Title: Improvements in or relating to carding machines
IPC: D01G15/84
Filed: 1923-05-22
Abstract: 209,664. Brayshaw, H. May 22, 1923. Drawings to Specification. Carding-engines.-The fancy roller is clothed completely with teeth of elliptical or elongated form in cross-section, with the longer sides flat, and the working faces of rounded or convex formation. The teeth may be radial or inclined, may be of staple form, and may have one or more bends.
Patent GB-1130699-A (GB)
Title: Telecommunication subscriber's set
IPC: H04M11/06
Filed: 1967-03-22
Abstract: 1,130,699. Automatic exchange systems. INTERNATIONAL STANDARD ELECTRIC CORP. 22 March, 1967 [29 March, 1966], No. 13464/67. Heading H4K. A subset for both voice and data transmission, the latter covering a wide frequency range, is connected to a central office by a 4-wire line 22 comprising sending and receiving pairs with simplex circuits E, M for D.C. supervisory signalling. The data set 23 and voice set 24 are connected alternatively by a manual key K1 through relay DR. An incoming signal on the E wire connects up a local ringing source 27 controlled by a multivibrator 34 to give interrupted ringing. A lamp 28 also lights. Upon reply, a voice lamp 37 lights. An amplifier 40 provides low level side tone. When the subscriber hangs up, a delay circuit 44 prevents false re-seizure by ring-back. The dial 41 is preferably of the VF push-button kind. A signal may be applied by a key K2 to the M wire to recall the subscriber at a distant station engaged in data transmission, the receipt of such a signal generating continuous ringing current.
Patent GB-1431851-A (GB)
Title: Electroconductive paper
Inventor: BAKULE R D
IPC: D21H19/12
Filed: 1973-03-21
Abstract: 1431851 Coatings comprising cationic polymers ROHM & HAAS CO 21 March 1973 [30 March 1972] 13486/73 Heading C3P [Also in Division D2] An electroconductive substrate has a coating comprising at least 1% based on the weight of the substrate of a water-soluble linear cationic polymer having from 75 to 100 mole per cent of units of formula in which R is hydrogen or methyl, R<SP>1</SP> is hydroxyethyl or hydroxypropyl, A is a C 2  or C 3  alkylene group, R<SP>2</SP> and R<SP>3</SP> C 1  to C 4  alkyl groups, and X is one or more of the anions, acetate, formate, lactate, propionate and glycolate, and from 0 to 25 mole per cent of units of formula The polymeric compositions may be applied with or without pigment additives to substrates, e.g. paper, using adhesives if necessary. The polymers may have molecular weights of 10<SP>5</SP> to 2 Î 10<SP>6</SP> and may be made by direct polymerization of aminoalkyl esters of acrylic or methacrylic acid or their appropriate salts, and then quaternizing 7-100% of the amine units with ethylene oxide or propylene oxide. An auxiliary binder may be present, e.g. poly- (ethyl acrylate) or ethyl acrylate/methyl methacrylate/oxazolidinylethyl methacrylate copolymer.
Patent GB-1421767-A (GB)
Title: Methods of gasifying hydrocabons
IPC: B01J23/94
Filed: 1972-03-22
Abstract: 1421767 Steam reforming BRITISH GAS CORP 22 Feb 1973 [22 March 1972] 13489/72 Heading C5E Reforming a vaporizable hydrocarbon feedstock, e.g. naphtha by reacting it with steam and hydrogen over a reforming catalyst (so called "hydrogasification" process for producing methane) which is progressively rendered inactive by formation thereon of submicroscopic layers of material from the feedstock, e.g. the so called "polymer" build-up, is improved by (1) passing the reactants through a first calayst bed 1 to effect reforming, (2) switching the stream of reactants to a second catalyst bed 2 wherein steam reforming occurs and (3) regenerating bed 1 by passage of hydrogen containing gases and (4) switching again when bed 1 is regenerated and bed 2 is inactive. The regenerative hydrogen containing gases may be the product of the Catalytic Rich Gas Process (C.R.G.), the product of the present process, e.g. the gases produced in the other bed to the one being regenerated wherein methane synthesis from carbon oxides and hydrogen takes place as a side reaction. The catalysts are Ni+trace alkali metal oxide, hydroxide or carbonate on alumina.
Patent GB-134934-A (GB)
IPC: B25B15/04
Abstract: 134,934. Harding, H. J. Nov. 14, 1918. Ratchet braces.-In reversible ratchet clutch driving-means for use with ratchet braces, &c., a spring is formed in two interconnected helical parts d, e, of opposite hand surrounding the spindle, either of which may be brought into position to overlap the joint c between the two relatively rotatable spindle parts a, b to reverse the drive. Loops f, g, facilitate adjustment.
Patent GB-424242-A (GB)
Title: Improvements relating to the thermal, electrical or other insulation of articles
IPC: C08B3/18
Filed: 1933-05-10
Abstract: Articles are insulated electrically, thermally, or against damp by a coating of cellulose which has been esterified, preferably not beyond the diacyl stage, by a process which does not cause destruction of the cellulose fibres and by acylating agents whose acid radical contains at least three carbon atoms.  The cellulosic material may be in the form of threads, fabrics, or loose fibres of cotton or regenerated cellulose, and may be esterified by the processes described in Specifications 349,322, 353,978, 379,658, and 380,822, with or without preliminary swelling.  In examples, cotton threads, cotton bands, viscose bands, and artificial threads of regenerated cellulose are butyrylated with retention of their structure until the acyl content is approximately 1,5 acyl-groups per C6H10O5 unit and are employed for insulating electric conductors, lagging steam pipes and as damp-proofing materials for winding on underground pipes or cables.
Patent GB-1141634-A (GB)
Title: Stabilized electrical power supplies
Inventor: RACKOWE MILES DAVID ADAM BULKY
IPC: G05F1/573
Filed: 1965-03-31
Abstract: 1,141,634. Automatic voltage control. COUTANT ELECTRONICS Ltd. March 29, 1966 [March 31, 1965], No. 13817/66. Heading G3R. A voltage stabilizer of the type including a series transistor VT1 controlled by an amplifier A in dependence upon output voltage variations is provided with a protection circuit comprising a further transistor VT2 associated with resistors R2, R3 and a diode D1, the transistor VT2 being rendered operative when the current through a series resistor R1 reaches a predetermined value, so that the overload characteristic of the circuit is of re-entrant form Fig. 2 (not shown); a capacitor C1, associated with a resistor R4, does not affect the normal operation of the protection circuit, but when the stabilizer is initially switched on, the capacitor takes a charging current which modifies the base bias of transistor VT2 so that the overload characteristic assumes a non re-entrant form. The Specification explains how this allows the stabilizer to be switched on to a non-linear load, or to be operated in series with another power supply. A further capacitor C2 similarly prevents activation of the protection circuit during normal operation in the event of a temporary increase in load current.
Patent GB-1526455-A (GB)
Title: Organomagnesium complexes
IPC: C07F3/06
Filed: 1976-04-06
Abstract: 1526455 Organomagnesium complexes TEXAS ALKYLS Inc 6 April 1976 [23 April 1975] 13848/76 Heading C2J The invention comprises organomagnesium complexes of the general formula where Y is an organozinc or organoboron compound selected from dialkylzincs, alkylzinchalides, trialkylborons, dialkylboron halides and alkylborondihalides, the alkyl portion of which is primary, secondary or tertiary alkyl, R<SP>1</SP> is primary alkyl or aryl, and m and n are numbers such that the ratio m : n is at least 0À1. The complexes are prepared by reacting, in the absence of oxygen, powdered magnesium with R<SP>1</SP>X (X is Cl or Br) at 20-200‹ C., the magnesium being present in an amount of 1-2 moles per mole of R<SP>1</SP>X, and adding the organozinc or organoboron compound Y to the thusobtained reaction mixture in not more than a 10 : 1 molar ratio with the magnesium. The complexes are useful as co-catalysts in polymerization.
Patent GB-170802-A (GB)
Title: Improvements in film drying machines
IPC: G03D15/02
Filed: 1921-05-18
Abstract: 170,802. Taylor, W. A. May 18, 1921. Drying racks and apparatus.- A film drier consists of a carrier within which the films are suspended under tension and which is rotated in the air. As shown, the carrier 22, 24, Figs. 1 and 3, having cross-bars 26, 29, is mounted on a shaft 5 which is rotated through belt-gearing from the motor 18. Wire frames 30 having vertical wires 35 with film tension members 36 are hinged to the cross-bars, the inner and outer frames being hinged to the cross-bars 27, 29 and 26, 28 respectively. The upper ends of the films 47 are secured to holders 42, Fig. 4, mounted upon racks 41, which are supported within slots 40 formed in the cross-bars and the lower ends are secured bv clips 48. The films are held under tension by the members 36, Fig. 7, which slide upon the vertical wires 35 and engage the clips 48. The frames are held within the carrier by bolts which engage with the cross-bars. In a modification, the films are suspended upon wires mounted in blocks secured to the cross-bars.
Patent GB-733459-A (GB)
Title: Process for preparing stimulating agents for clinical use from bacterial polysaccharides
IPC: A61K35/74
Filed: 1953-05-19
Abstract: Pyrogenic polysaccharides derived from gramnegative bacteria are acylated, e.g. with an organic acid anhydride.  The dried bacteria containing such polysaccharides and preextracted with a solvent for lipoids may replace the polysaccharides themselves. The products are stated to be useful as stimulating agents for the pituitary-adreno-cortical system with only very negligible p side-effects.  To minimise side-effects, acylation should continue for at least five hours.  Examples describe the treatment of a pyrogenic coli polysaccharide with acetic or propionic anhydride in pyridine and water or in pyridine and formamide, and also the extraction of coli bacteria with chloroform and ethanol, acylation with acetic anhydride in pyridine and water, and further extraction with chloroform and ethanol.  Polysaccharides from other bacteria than coli bacteria are referred to.
Patent GB-208088-A (GB)
Title: Improvements in apparatus for drying sand
IPC: F26B17/16
Filed: 1923-05-28
Abstract: 208,088. Davies, P., and Morgan, M. N. May 28, 1923. Gravity, materials descending by; gases, controlling circulation of; discharging. - Apparatus for drying sand comprises a chamber containing a flue 7 over which the sand passes from a feed-shoot 15, the flue being heated by the gases from a furnace 4, and having a brickwork bridge 17 for diverting the gases on to the sides of the flue. The flow of sand to the discharge screens 23 is regulated by the adjustable plates 21. The dried sand passes through the screens into a pit 2, and any foreign bodies, such as stones &c. are removed through the openings 11. The flow of sand to the plates 21 is controlled by adjustable plates 20.