baber/WOPTO huggingface dataset:
Patent GB-1041066-A (GB)
Title: Improvements in screw thread cutting apparatus
Inventor: MOUNTFORD EDWARD HENRY
IPC: B23G1/16
Filed: 1963-06-21
Abstract: 1,041,066. Screwcutting machine. BOMA ENGINEERING (BILSTON) Ltd. June 29, 1964 [June 21, 1963], No. 24795/63. Heading B3N. A screw-cutting machine which has a fast approach and a slow feed rate comprises a tool spindle 14, a non-rotary lead screw 16 and a nut 15, and an hydraulic spool valve V3, for controlling the rate of feed, the valve being actuated by the lead screw. The spindle is driven by an electric motor 12 through a gear-box 13 which is carried on a slide 11. Slide 11 is moved along bed 10 by supplying fluid pressure to a stationary hydraulic piston 18. Lead screw 16 has a collar 21 which co-operates with one end of a boll crank lever 22, the other end of which cooperates with a collar 23 carried by the spring urged spool 19 of valve V3. In operation, starting from the position of Fig. 1 (not shown) slide 11 is locked by actuating check valves V4, V5, and spool 19 of valve V3 blocks the port B. A port A is connected to a pump, and fluid pressure is supplied to cylinder 17 through valve V5, and slide 11 is moved from the position where collar 21 is shown in full lines, Fig. 2 (not shown), to the broken line position. Bell crank lever 22 moves spool 19 upwardly and actuates a switch to start up motor 12 to rotate spindle 14. Lead screw 16 moves rearwardly to lower the spool by a small amount, slide 11 moves forward at the same rate as the lead screw moves rearwardly, and an intermediate limit switch is actuated. At the end of the stroke a forward limit switch is actuated to reverse motor 12, thus reversing the direction of movement of the lead screw. Spool 19 is moved upwardly by spring 34, fluid is bled from valve V3, and the slide 11 is retracted at the lead screw controlled rate. The intermediate limit switch is actuated to stop motor 12; a piston 25 is operated to lift spool 19, and slide 11 is retracted as a fast rate until a back limit switch is operated, and the slide is locked again by valves V4, V5.
Patent GB-616039-A (GB)
Title: Improvements in welding machines
IPC: B23K11/30
Filed: 1946-08-21
Abstract: 616,039. Electric welding. HENDERSON, L. B. Aug. 21, 1946, No. 24997. [Class 83 (iv)] A roller-welding head for longitudinally seaming tubes &c. comprises two integral units insulatedly secured together and mounted in end-bearings. Each unit comprises an electrode-disc 1 at the end of a shaft 3 carrying a hollow annular contact drum 2 dipping in mercury &c. held in a container 8 on a bracket 7. A detachable electrode-rim 20 secured in a periplieral groove of the disc 1 has an annular side-channel 22 for cooling liquid circulated from a face recess 18 in the disc 1. The recess is connected to an inlet pipe 15 by the drum interior 2a and to an outlet 16. The rim 20 may be made in two parts, and the disc 1, drum 2 and shaft 3 as a single casting.
Patent GB-241389-A (GB)
Title: Improvement in cushioning device for rock drills
IPC: B25D9/18
Filed: 1924-10-21
Abstract: 241,389. Marks, E. C. R., (Ingersoll-Rand Co.). Oct. 21, 1924. Percussive drills.-In a percussive rock drill wherein the main piston controls the inlet to the two ends of the cylinder by a head D and has a head C which controls the main exhaust port g, and wherein an auxiliary exhaust from both ends of the cylinder through ports h, j respectively is controlled by an auxiliary, fluid-actuated valve k, means are provided to lock the auxiliary valve so as to keep open the port h to weaken the forward piston movement and to close the port j to provide a cushion to prevent the piston striking and breaking the front end parts of the tool when extracting the drill steel from a hole. The locking means comprises a longitudinally-movable pin w arranged in an extension of the head q of the central bolt p of the auxiliary exhaust valve k, which pin is operated by a nut 4 against the resistance of a spring- pressed stop 3 which engages a hoad z on the pin w to hold it in the locking-position. Specification 106,800 is referred to.
Patent GB-300953-A (GB)
IPC: D01D5/14
Filed: 1928-08-31
Abstract: 300,953. Bemberg Akt.-Ges., J. P. Nov. 21, 1927, [Convention date]. Apparatus for making filaments ; ammoniacalcopper cellulose solutions, processes for making filaments from.-Artificial filaments made by a stretch-spinning process, for instance from ammoniacal-copper solutions of cellulose, are subjected, after formation, to a considerable stretching by means of suitable devices and are then run from the last of the drawing devices on to a winding device running at a peripheral speed somewhat less than that of the last drawing device. As shown in Fig. 1, the filaments may pass from a spinning vessel 1 round a guide-rod 3, through a channel 4 in which an acid treatment is applied, and then over a drawing roller 5 to a winding bobbin 7, the roller 5 running at a somewhat greater speed than the bobbin 7. The apparatus may be modified by providing two drawing rollers or by arranging the bobbin 7 below the roller 5; also the acid may be sprayed on to the filaments as they pass round the roller 5.
Patent GB-246073-A (GB)
Title: Improvements in or relating to electric arc lamps
IPC: H05B31/00
Filed: 1925-03-24
Abstract: 246,073. Steinberg, E. March 24, 1925. Arc lamps.-A lamp with parallel carbons, which are not fed as they burn away, is provided with a steadying - resistance mounted on the same frame as the lamp, the whole being contained in one casing. This casing 1 may be integral with or secured to a reflector 2, and is shown with a removable cover 3 through which the supply conductors may pass. Carbon-holders 4 are secured to an insulating plate, say of asbestos board, on which is a bracket 8 supporting an insulating disc 7 grooved circumferentially to receive a resistance helix 9, advantageously of chrome-nickel. The plate 6 is secured by screws or otherwise to lugs 10 integral with the casing 1. A handle may be attached at its top end to the bottom of the casing 1 and at its lower end to a plate extending to the lower front edge of the reflector. This plate may have a threaded hole, above which a nut may be secured to the plate, for attachment to a tripod. The arc may be struck by a primer. Fig. 2 shows the resistance 9 connected so that the lamp can be used on circuits of various voltages, say 110-220.
Patent GB-492558-A (GB)
Title: Process for stabilizing vinyl resin against the action of light
IPC: C08K5/10
Filed: 1937-09-16
Abstract: Interpolymers of vinyl halides and vinyl esters are stabilized against light by the addition of from ,5 to 10 per cent of an aryl ester of benzoic, or a substituted benzoic, acid.  Suitable esters include resorcinol disalicylate, resorcinol dibenzoate, phenyl salicylate, p-cresyl salicylate, p-cresyl benzoate, m-cresyl benzoate, o-cresyl phthalate, phenyl phthalate, o-cresyl benzoate and phenyl benzoate.
Patent GB-462723-A (GB)
Title: Method of manufacture of moulds for roofing tiles
IPC: B28B7/00
Filed: 1935-09-10
Abstract: A gypsum mould or die, for the production of tiles, has its moulding surface roughened by a wire brush to form furrows or a stippled surface.
Patent GB-734944-A (GB)
Title: Improvements in or relating to separating and sorting devices
IPC: A01D46/02
Filed: 1952-10-08
Abstract: 734,944. Sifting apparatus. HINDS, G. A. Nov. 12, 1953 [Oct. 8, 1952], No. 25239/52. Class 117. For separating hop petals and stalks from hop flowers, for example, a plurality of endless cables &c. are arranged side by side, supported by a number of similar groups of pulleys on each of two parallel shafts, the diameters of the pulleys in each group varying. In the embodiment described, endless wires 20 are supported on sets of pulleys carried on shafts 10, 11. The four similar groups of pulleys 12 . . . 15 on shaft 10 each comprises pulleys, the daimeter of which progressively decreases from one side of the group to the other. The inner groups 12, 13 are arranged with their largest pulleys adjacent and are driven by the shaft 10 while the outer groups 14, 15 each have their smallest pulleys adjacent the inner groups and are rotatable on the shaft. The pulley groups 16 . . . 19 on shaft 11 are similarly arranged but the outer groups 16, 19 are driven by the shaft and the inner groups 17, 18 are rotatable thereon. Shaft 10 is driven at a lower speed than shaft 11. A mixture from a hop picking machine is fed to the device and as it travels along with the moving wires the strigs become aligned with and, together with hop petals, fall through the spaces, on to a tranverse conveyer 23. The remainder of the mixture is discharged over the pulleys at the remote end for further treatment, for example on a similar arrangement with differently spaced wires.
Patent GB-1414425-A (GB)
Title: Sheet-counting machine
IPC: G06M9/02
Filed: 1973-05-25
Abstract: 1414425 Sheet counters GLORY KOGYO KK 25 May 1973 [9 June 1972] 25270/73 Heading G4D A sheet counting machine of the kind with rotating suction heads and a mechanism for holding a stack of sheets is provided with means for semi-automatic starting of the counting operation which includes a locking mechanism which is unlocked by placement of the stack in a prescribed position in the holding means unlocking of the means causing the holding mechanism to grip the stack and also to operate a switch which energizes the operating motors. As described the machine is substantially as described in Specification 1,316,463 except that the check member 11 has an additional arm which acts on the microswitch SW to energize the motors which advance the stack, rotate the heads and drive the vacuum pump.
Patent GB-917836-A (GB)
Title: Improvements relating to the manufacture of metal fireplace surrounds
Inventor: MARSDEN GEORGE HENRY
IPC: F24B1/198
Filed: 1960-07-21
Abstract: 917,836. Surrounds for fireplaces. MARSDEN & BATESON Ltd. July 21, 1961 [July 21, 1960], No. 25391/60. Class 126. [Also in Group XXII] _ A method of making metal fireplace surrounds, of the kind comprising a frame of material such as mild steel, selected portions of which have a covering of stainless steel or other decorative metal, comprises forming the frame from angle section metal, forming facing sheaths of decorative sheet metal and sliding and/or springing the said sheaths on to the sides and cross-piece of the frame. Mild steel sheet is cut to form strips which are then bent up into angle section form to constitute sides A, C and cross-piece B of a fireplace surround. Flanges 101 of the members A, B and C are slit at positions 102 and tongues 103 are bent therefrom into the plane of the flanges 104. Fixing wires 11 are fitted in the slots 105 formed by the bending of the tongues 103. Alternatively, fixing brackets may be welded to the frame members. The sides A, C are secured to the cross-piece by welding or brazing abutted edges. Lengths of stainless steel to form facing sheaths for the sides A, C, cross-piece B are then cut, mitred at their ends, folded inwardly at 121 at one edge and bent in at 122 at the other edge. The sheaths C1 for the sides A, C are then slid over the sides, so as to cover both flanges, Fig. 2, or one flange only, Fig. 4 (not shown), of the side members. A sheath Bl, Fig. 3, is sprung on to the cross-piece B.
Patent GB-1153993-A (GB)
Title: Rotary Impeller Pumps
Inventor: MOTTRAM ANTHONY WILLIAM THOMAS
IPC: F04D9/00
Filed: 1965-06-16
Abstract: 1,153,993. Centrifugal and axial-flow pumps. ROLLS-ROYCE Ltd, June 13, 1966 [June 16, 1965], No.25414/65. Heading F1C. The effective flow area at the inlet of a pump impeller having one or more helical blades 2, Fig. 1, is reduced by purposely creating a controlled region 7 of cavitation on the suction sides of the blades. This enables the pump to operate at high rotational speeds and low suction heads. The impeller hub may be conical or substantially cylindrical. In pumps having full admission to the impeller, Figs.4, 5 and 6 (not shown), the cavitation occurs over the whole span (i. e. from root to tip) of the leading edge 3 of each blade, whereas in pumps having a controlled inlet area, Fig. 7, the cavitation occurs over only the effective span of the blading (i.e. that part of the span not obturated by shutters 17). The shutters may be arranged to reduce the effective tip diameter or increase the effective root diameter of the blading, and are controlled by the pump delivery pressure through a piston 20 or through a bellows. The controlled cavitation is produced by making each leading edge of thin wedge-shaped form, with an included angle of 3 degrees or less, and by making the blade inlet angle A of small magnitude, i.e. about 0 to 8 degrees. The blade angle and pitch both increase from the leading edge 3 to the trailing edge 4 to cause the cavitation to be terminated within the impeller. The leading edge 3 may be curved, or may be straight and radial or forwardly or backwardly inclined.
Patent GB-532445-A (GB)
Title: Improvements in or relating to lantern fittings
IPC: F21V11/00
Filed: 1939-09-08
Abstract: 532,445. Screens for overhead lamps. BRITISH THOMSON-HOUSTON CO., Ltd., BERTRAM, J., MAXTED, R., and THORPE, F. W. Sept. 8, 1939, No. 25454. [Classes 75 (ii) and 75 (iv)] A screening device for an overhead electric lamp comprises a ring portior 1 for clipping on tc the base of the hood 7 and attached tc webs 3 which carry a central cup portion 2. The webs are extended to form lugs for axial positioning of the the bulb 12, and the hood 7 may be a reflector with the filament 14 substantially at its focus. The lines from the focus, to the bottom edge 9 of the ring 1, and the rim 10 of the cup 2. form a predetermined small angle d with each other.
Patent GB-673114-A (GB)
Title: Improvements in and relating to electronic speed control systems for series motors
IPC: H02P7/26
Filed: 1949-10-05
Abstract: 673,114. Control of D.C. motors. BRITISH THOMSON-HOUSTON CO., Ltd. Oct. 5, 1949. [Oct. 21, 1948] No. 25603/49. Class 38 (iii). [Also in Group XXXV] A series motor 1 is energized from an A.C. supply through a grid-controlled rectifier 4. The grid/cathode control voltage developed across a capacitor 5 comprises the difference between the motor terminal voltage and a potential divider 6, 13 across the A.C. supply. The Specification states that there will be one speed and load of the motor for a predetermined setting of the circuit. In an alternative arrangement, the motor terminal voltage is taken from a potentiometer 26 through a diode 23. The potential divider circuit has a diode 24 in the lower limb. The resistors 26, 27 are stated to control the "turn off" and "turn on" periods of the rectifier respectively, to provide finer speed regulation.
Patent GB-303738-A (GB)
Title: An improved device for shaping under garments
IPC: D06C5/00
Filed: 1928-09-07
Abstract: 303,738. Heliot, Les Fils et Gendre de A. Jan. 7, 1928, [Convention date]. Shaping made up goods upon internal frames.-A device for shaping waistcoats or other garments with or without sleeves comprises a metal board B which may be adjustable in height or width, pivoted about a vertical axis C in a support G secured to a crosspiece H. Columns A, A<1> fixed in supports F, F' displaceably mounted on the cross-piece carry pairs of arms D, E, D', E' carried by sockets adapted to pivot about the columns, one arm D, D' of each pair being pivoted at K, K<1> on the socket. In use, the garment is placed on the board B and the closed pairs of arms are inserted in the sleeves of the garment. The arms are then opened scissor-wise by lever devices to engage the sleeves, and the apparatus is placed in a hot chest, or the device may be heated internally by steam, electricity, or other means.
Patent GB-464666-A (GB)
Title: Improvements in a device for absorbing hydraulic pressure fluctuations
IPC: G01L19/06
Filed: 1936-09-22
Abstract: 464,666. Regulating pressure of fluids. DEHN, F. B. (Lapointe Machine Tool Co.) Sept. 22, 1936, No. 25776. [Class 135] [Also in Group XIX] Comprises a device for absorbing temporary fluctuations in a pressure gauge or other connection of a hydraulic system e.g. those in a hydraulic broaching or other machine tool. The device 10 is shown interposed in a branch connection between a hydraulic cylinder supply pipe 11 and a gauge G. The pressure variations in the cylinder are communicated to the branch 15. The device 10 comprises a chamber 20 with coaxial chambers 24, 25 of different sizes. The lower has an opening 27. A cylindrical plug 30 with an exterior square threaded spiral groove 31 is pressed into the cylinder 24 of larger diameter. The bore 32 is screwed to receive a drag rod to withdraw the plug when necessary. The chamber 25 forms a sediment chamber.
Patent GB-232274-A (GB)
Title: Improvements in apparatus for compressing printing plates
IPC: B41M9/00
Filed: 1923-10-16
Abstract: 232,274. Claybourn, L. W. Oct. 16, 1923. Drawings to Specification. Printing-surfaces.-Apparatus for compressing printing-plates so as to bring all parts of the printing-surface into the same plane or into the same cylindrical surface comprises a hardened surface on which the plate is laid face downward, and a compression member having a hardened operative surface parallel to the pressure surface, adapted to be brought into contact with the back of the printing-plate under sufficient pressure to compress the plate and bring all parts of the printing-surface into contact with the pressure surface. The operative face of the compression member is preferably formed with protuberances and depressions so that the compression of the plate is effected without distortion of the printing-surface. The apparatus is identical with that described with reference to Figs. 1 to 13 and 18 to 23 of Specification 232,273, but the claims of the two Specifications differ. Reference has been directed by the Comptroller to Specifications 9013/04, [Class 101, Printing other than letterpress &c.], and 10670/11.
Patent GB-380594-A (GB)
Title: An improved selective electric switch
IPC: H02J13/00
Filed: 1931-09-16
Abstract: 380,594. Supply systems. LANDIS ET GYR SOC. ANON., 1, Hofstrasse, Zug, Switzerland. Sept. 16, 1931, No. 25931. Convention date, Sept. 20, 1930. [Class 38 (iv).] Selecting sources in service.-Comprises an automatic switching arrangement for selecting a preferred energized line from a number of supply lines and connecting it to an auxiliary circuit. If the supply in that line fails the switch automatically hunts round to find another energized line but returns to the preferred line as soon as it becomes re-energized. The switch consists of a drum 9, carrying a number of cams 10 which, in different positions of the drum, close switches to effect connection between an auxiliary line V and one of the supply lines I, II, &c. Relays P, II<11>, &c., connected to the supply lines, engage with a lever 27 bv means of lever 34 and when one or more of the lines are energized the lever 27 is moved to the position shown, with its lower end out of the path of a rotatable detent device 7 connected to a clockwork motor used to rotate the switch drum. A relay 15 connected to the auxiliary line V engages with a lever 18 and when energized by the switch connecting the auxiliary line ot an energized supply moves the lever so that the part 19 moves into the path of the detent 7 and stops the motor rotating the switch. In order, however, to prevent the switch being stopped in an intermediate position, a lever 22 has an arm 23 that engages the pin 21 'on the lever 18 and holds the part 19 out of the path of the detent 7 until the pawl 25 drops into the tooth of the ratchet 26. If all the supplies are de-energized the lever 27 will be moved by spring 29 into the path of the detent 7 in order to prevent the spring motor running down. This motor is maintained wound by a Ferraris motor 3. Lever 27 has a pin 30 that engages lever 22 to prevent motor being stopped before a switching operation is completed. In order to obtain preferential selection of a particular supply a relay VII is connected to that source (as shown II) and operates contacts 38 connected in the circuit of the relay 15, and the switch is provided with an additional pair of contacts connected in parallel with the contacts 38 and closed by a cam at the same time as the preferred course II is connected to the auxiliary line V. When supply II is energized, the contacts 38. are open, and the circuit of relay 15 is completed by the additional contacts on the switch, When the supply II fails, the contacts 38 close and complete the circuit of the relay 15, but since it is de-energized it allows the switch to hunt around to find an energized source and effect connection of the auxiliary to that. As soon, however, as the supply II becomes again energized, the circuit of relay 15 is broken by the contacts 38 opening, and the switch resets itself to connect line V to the supply II, in which position the circuit of relay 15 is completed by the contacts on switch.
Patent GB-1099720-A (GB)
Title: Improvements in or relating to adhesive compositions
IPC: C09J133/06
Filed: 1965-06-18
Abstract: Adhesive compositions comprise an aqueous dispersion containing a polymer of a vinyl ester of a saturated C2- 4 aliphatic acid or a C1- 8 alkyl or alkenyl ester of an a ,b -unsaturated aliphatic acid containing not more than 6 carbon atoms, polyvinyl alcohol, a water-soluble or water-dispersible aminoplast condensate and a curing agent comprising an amine salt which is water soluble to give a solution of pH between 7 and that of ammonium chloride at the same concentration, and a salt of a strong acid and a metal, the hydroxide of which is either neutral or a weak base.  The polymer may be a polymer or copolymer of vinyl acetate, propionate or butyrate, or of an alkyl or alkenyl ester of acrylic, methacrylic, maleic or citraconic acid. The aminoplast may be a condensate of formaldehyde with urea, melamine, guanidine or dicyandiamide.  The amine salt may be derived from mono-, di- and triethanolamines, di- and tri-alkylamines, alkyl dipropylene triamines, 2 - methyl - 2 - amino - 1 - propanol and 2 - methyl - 2 - amino - 1 - butanol, together with hydrochloric, hydrobromic, sulphuric, phosphoric, sulphamic and arylsulphonic acids. Specified metal salts are zinc, copper and magnesium nitrates, chlorides, sulphates and phosphates. The compositions may also comprise fillers, e.g. china clay, diatomaceous earth, wood flour and pulverized Douglas fir bark, and may be used to bond paper and paper-boards, e.g. in the manufacture of cartons.  An example describes an aqueous adhesive composition comprising polyvinyl acetate, polyvinyl alcohol, urea-formaldehyde condensate, 2 - methyl - 2 - amino-1-propanol hydrochloride, zinc nitrate and clay.
Patent GB-1038676-A (GB)
Title: Fluid operated clutch
Inventor: SCHILLING HUGH KEHNE
IPC: F16D25/0635
Filed: 1963-07-01
Abstract: 1,038,676. Friction clutches. HORTON MANUFACTURING CO. Inc. July 1, 1963, No. 26075/63. Heading F2C. An axially fixed friction faced pulley 32 is clutched to a hollow shaft 14, keyed fast with a motordriven driving-shaft 10, by a spring-released friction disc 24, slidably splined on the shaft 14 and thrust axially into engagement with the pulley by supplying air or other pressure fluid through a union 110 to a space 116 between a frusto-conical piston 84, fast on the shaft 114, and an axially-slidable mating cylinder 68, bearing on the disc 24. The friction disc 24 is provided with cooling fins 26, and the piston 84 is screwed on the shaft 14 and locked in an adjusted position by a set screw.
Patent GB-372668-A (GB)
Title: Improvements in or relating to wireless apparatus
IPC: H04B1/08
Filed: 1931-09-17
Abstract: 372,668. Wireless' receiving apparatus. BRANDT, R., 12, Schlesischestrasse, Berlin. Sept. 17, 1931, No. 26111. Convention date, Jan. 8. [Class 40 (v).] Heating and/or anode batteries b1, b2 of wireless apparatus have fixed or resiliently mounted contacts l1 .. l4, fitted on the bottom of the batteries coacting with similar contacts k1 .. k4 on the interior of the set, so that insertion of the battery in its position establishes correct connections to the apparatus. In the case of accumulators, these are mounted in separate cases with contacts on the base.