baber/WOPTO huggingface dataset:
Patent GB-257640-A (GB)
Title: Improvements in line-spacing mechanism for typewriters
IPC: B41J19/76
Filed: 1925-04-02
Abstract: 257,640. Hardingham, G. G. M. April 2, 1925. Line-spacing mechanism; platen-roller couplings.-In a friction-feed line-spacing mechanism having provision for minute adjustment of the feed, a friction-pawl d<2> engaging a drum e on the platen f is carried by an arm d which is pivoted to a loose arm c on the spindle a<1> of the linespacing lever a and is connected by engaging gears d<1>, b<1> or the like to a fast arm b on the spindle. On raising the line-spacing lever,a, the feed-pawl is caused to grip the drum by the action of the gears during the initial movement of the arm b, and on further movement the arm c moves with the arm b and line-spacing is effected. The arm c has a member c<1> which abuts on a disc f<1> on the platen to limit the feed movement. On releasing the line-spacing lever, a spring k returns the arm b, the gears act to relieve the feed-pawl, and a pin b<2> on the arm b abuts on the end of a slot c<2> in the arm c and retracts the arm c. Instead of the pin and slot, the arm c may have a lug in the path of the arm b. The feed is regulated by a cam g which forms a back stop for the arm c, the cam being revoluble by means of a. finger-piece and being provided with a dial h set with reference to a pointer h<1>. The cam g may be replaced by a face cam provided with a dial which can be read from the front of the machine. The feed-pawl is grooved and the drum is made from fibre or hard rubber and may also be grooved. Carriage-releasing arrangements; platen-roller detents. - A releasing-bar j is depressed by a finger c<3> on the member c'. A friction-pad on the j normally engages the platen spindle or a drum thereon and prevents rotation of the platen.
Patent GB-1371196-A (GB)
Title: Blow moulding
IPC: B29C49/42
Filed: 1971-04-06
Abstract: 1371196 Blow-moulding; flash removal BONE CRAVENS Ltd 28 March 1972 [6 April 1971] 8859/71 Heading B5A In an extrusion-blow moulding machine in which a mould carrier recipocates horizontally between positions beneath an extruder head and a blowing and/or filling head, base flash formed is removed by opening the mould parts to allow the article to drop on to a surface having a slot into which the flash projects while the base rests on the surface and then moving the mould carrier to move the article over the surface until the flash is cut off by a knife edge forming an end of the slot. As shown in Fig. 1, mould parts 8 are pivoted at 10 to carrier 5, bracket 6 thereof being movable on guide rods 7 between a first position where parison 4 from extruder 3 is received in the mould 8 to a second position where the parison is blow moulded and filled by mandrel 9. The blow-moulded article 12 has base flash 11 and neck threads 13 and, after filling, is sealed at 15 by jaws 14. The mould parts 8 are then opened, article 12 falling into shoot 17 also mounted via arm 16 to carrier 5, flash 11 projecting into slot 19 in surface 18. When the carrier 5 is moved to the left for mould 8 to receive a further extrudate, flash 11 is severed by knife-edge 20, dropping into shoot 21 and article 12 drops into shoot 22. Preferably, a plurality of moulds 8 and carriers 5 co-operate successively with extruder 3.
Patent GB-179039-A (GB)
Title: Improvements in or relating to receptacles for tobacco ash
IPC: A24F19/00
Filed: 1921-03-23
Abstract: 179,039. Tiptaft, Ltd., Tiptaft, N., and Aston, H. A. March 23, 1921. Ash-trays. - A pivoted ash-receptacle for vehicles, theatres, &c. is pivoted near the top so that the bottom can be swung open to discharge the contents. A central tongue b<6> projecting from an inturned flange b<5> of the front part b engages with a projection a<3> on the back part a which is formed with flanges a', a<2> and a stop g. The front may be provided with a match striker f.
Patent GB-165229-A (GB)
Title: An improved egg beater
IPC: A47J43/10
Filed: 1920-03-27
Abstract: 165,229. Cotter, J. E. March 27, 1920. Reciprocating batch-mixers. -An egg-beater consists of a vessel a fitted with a cork b to which is fixed a rod c bearing a diaphragm c<1> of perforated metal, wire netting &c. The rod c may be adjustable in the cork b.
Patent GB-1115015-A (GB)
Title: Improvements in or relating to automatic bandwidth adjustment of an audio frequency signal
Inventor: MCMULLIN TERENCE ALEXANDER
IPC: H03G5/22
Filed: 1966-03-01
Abstract: 1,115,015. Automatic control of frequency response. RANK ORGANISATION Ltd. 28 Feb., 1967, No. 9012/66. Headings H3T and H4R. A circuit for adjusting the bandwidth of an audio signal comprises a capacitance and also switch means comprising a transistor associated with a signal source, and means for operating the switch means either in accordance with the signal level or independence upon the signal to noise ratio. The high-frequency response of a source comprising amplifying transistor 5 is varied by means of capacitor 8 in series with the collector to emitter path of transistor 9, shunting the collector load 6 of transistor 5, the control voltage being applied to the base of transistor 9. As shown, the lowfrequency response is varied simultaneously by means of capacitor 3 in series with the collector to emitter path of transistor 4, shunting resistor 7 in the emitter circuit of transistor 5, the control voltage being also applied to the base of transistor 4. In a further embodiment (Fig. 4, not shown) the response at low frequencies is varied by means of a capacitor in series in the signal path, shunted by the collector to emitter path of a transistor acting as a switch.
Patent GB-156062-A (GB)
Title: Improvements in or relating to casings for universal joints which work chiefly in one plane, such as torque tubes of motor cars
IPC: F16D3/84
Filed: 1920-03-27
Abstract: 156,062. Birkigt, M. Dec. 30, 1919, [Convention date]. Torque-rods.- Universal joints the shafts of which move chiefly in one plane are enclosed in a ball-and-socket jointed casing supported on fixed trunnions. The trunnions c<1> supported in fixed bearings d support a cylinder c, which may be the head of a motorvehicle torque tube. The spherical end a of a tubular casing b surrounds the joint proper o, and is supported between a pair of rings c<2>, c<3>, which fit inside the cylinder c and outside the sphere a. One end of the cylinder c carries a fixed flange c<20>, and the other an adjustable flange ring c<30>.
Patent GB-643813-A (GB)
Title: Improvements in and relating to feed heating and feed distribution in water tube boilers
IPC: F22B37/22
Filed: 1948-03-31
Abstract: 643,813. Steam boilers; feedwater heating systems. LA MONT INTERNATIONAL ASSOCIATION, Ltd., and BAUER, F. W. March 31, 1948, No. 9074. [Classes 64(i) and 123(ii)] In a water-tube boiler the steam- and-water drum 1 is sub-divided by a baffle 2 into two spaces 3, 4, and a perforated or slotted feedwater supply pipe 13 is disposed longitudinally within the smaller space 4 so that the entering feedwater will be heated by the watersteam mixture issuing from the steamgenerating tubes 9, 10, connected thereto, before it overflows into the larger space 3 provided with the usual downcomers 6. A hood baffle 8 may be associated with the baffle 2, and, preferably, the inlet 12 to the pipe 13 extends through the space 3.
Patent GB-1030187-A (GB)
Title: Layflat tubular film manufacture
IPC: B29C48/92
Filed: 1965-03-03
Abstract: 1,030,187. Plastics layflat tubular film. CANADIAN INDUSTRIES Ltd. March 3, 1965 [March 5, 1964], No. 9093/65. Heading B5B. In producing plastics layflat tubular film of predetermined width by continuously extruding a melt of the plastics material through an annular die to form seamless tubing, withdrawing and flattening the set tubing at a predetermined distance from the point of extrusion, and maintaining a bubble of a gaseous medium in the section of the tubing extending between the points of extrusion and flattening such that the tubing is inflated while it is in the formative plastic state, the width of the flattened tubing is continuously controlled by passing the flattened tubing past a detecting means comprising a metered gas tube in contact with, and extending transversely and beyond each side of, the tubing, the gas tube being provided on the surface contacting the tubing with gas escaping means located on each side of the tubing and extending at least partially across the tubing at its predetermined width on each side. Any change in the width of the tubing while in contact with the gas escaping means results in a change of the effective area of the gas escaping means and hence in a variation of the gas pressure inside the metered gas tube, this variation being used to control compensating readjustment of the shape of the bubble in the tubing. The tubing may be cooled from its formative plastic state to the set condition by directing a controlled volume of a stream of a gaseous cooling medium to impinge externally and circumferentially on the tubing and/or by introducing a flowing gaseous medium into the tubing to both inflate and cool the tubing; the shape of the bubble may be readjusted by varying either the rate of supply of the external cooling gaseous medium or the volume of the gaseous medium introduced into the tubing, the latter alternative being preferred. The metered gas tube detecting means is preferably located close to the flattening point of the inflated tubing, i.e. as close as possible to the flattening or squeeze rolls. The gas tube may be extendable to allow production of film of any desired predetermined width. The gas escaping means may be, for example, slits or series of holes, from which issues any suitable inert gas, for example air. The detecting means may be coupled to a signalling device to indicate that manual compensating readjustment is necessary; however, such readjustment is preferably made by coupling the detecting means to automatic adjusting means, for example an electropneumatic relay system, an apparatus for which is fully described and illustrated, and its use exemplified in the production of a layflat tubular film of polythene.
Patent GB-1387692-A (GB)
Title: Multiply-reinforced structural panel
IPC: E04C2/36
Filed: 1972-02-29
Abstract: 1387692 Laminated honeycomb panels PANEL/COMB INDUSTRIES CORP 29 Feb 1972 [4 Oct 1971] 9259/72 Heading B5N A structural panel comprises a honeycomb core 11 of paper strips 12 forming cells 14, facings 20, 21, each including a thermosetting resinous plastics layer 23, 24 and a thermosetting resinous layer 28, 29 having a glass fibre reinforcing layer 26, 27 containing 4% by weight of hollow thermoplastic 10-100 micron spheres, columns 30 of thermosetting resin extending from the latter layer along a substantial number of the corners of the core cells. The strips 12 may be impregnated with a phenolic resin and the core cells may be partially filled with foamed polyurethane. Layers 23, 24 may be a cobalt soap-promoted pigmented maleic/isophthalic/propylene glycol/diethylene glycol polymer. Layers 28, 29 may be derived from a maleic/isophthalic/propylene glycol resin dissolved in styrene. The reinforcement 26, 27 may comprise woven rovings bonded to a chopped strand mat. The thermoplastic spheres may be of polyvinylidene chloride or polyacrylonitrile. Laminations may comprise placing the first layer as a gel coat on a heatable horizontal platen, either applying the second layer as a pre-impregnated glass layer or applying the glass fibre layer and resin separately, embedding the core without displacing the glass reinforcing layer and after curing, embedding the other surface of the core.
Patent GB-1492912-A (GB)
Title: Hot gas engine heater head
IPC: F02G1/055
Filed: 1976-03-09
Abstract: 1492912 Hot gas engines UNITED STIRLING (SWEDEN) AB & CO KB 9 March 1976 09281/ 76 Heading F1S The invention relates to a hot gas engine heater head comprising heater pipes in an annular disposition around a central axis x-x for heating by common combustion means (burner 21) the heater pipes connecting cylinder tops 1, 2 to respective regenerator housings 3, 3a and each heater pipe having a straight portion 6 and a curved portion 5 arranged upon an imaginary conical surface. According to the invention the curved portions 5 of the heater pipes extend outwardly from the straight portions 6 of the heater pipes and the straight portions are arranged upon an imaginary cylindrical surface. The curved portions of the heater pipes are connected through manifolds 8, 8a to the respective regenerator housings 3, 3a and the straight portions 6 of the heater pipes are connected through manifolds 7 to the respective cylinder tops 1, 2. Although only two cylinder tops, 1, 2 are shown the complete engine comprises four cylinders each associated with two regenerator housings.
Patent GB-1090806-A (GB)
Title: Improvements relating to screwdriving machines
Inventor: JEFFS ANTHONY ROGER
IPC: B23P19/06
Filed: 1965-03-05
Abstract: 1,090,806. Screwdrivers. RUSSELL AUTOFEED SCREWDRIVERS Ltd. May 11, 1966 [March 5, 1965], No. 9367/65. Heading B3N. A screwdriver which may form one of the stations of an assembling machine, comprises a body 10, Fig. 2, a sleeve 14 slidable in the body, a screwdriving spindle 16 driven by an electric motor or air turbine 17, through a clutch 18, a screw-receiving part 12 slidable in sleeve 14 against a spindle 33, a gating mechanism 37 for controlling the supply of screws from a magazine, and means above motor 17 for axially feeding the complete unit 15, or the spindle 16, relative to sleeve 14. The feed means comprises a pneumatic piston 19, Fig. 1, whose rod 20, Fig. 2, carries an abutment 23, which is used against a block 22 by a spring 24, located between a plate 26, carried by the piston-rod, and the block, which is connected to sleeve 14. Screw-receiving part 12 comprises a fixed member 42 having bores 45, 46, and a movable part 47 which is pivoted at 52, Fig. 3, so that the bore 49 of part 47 can be moved into alignment with either bore 45 or 46, the part being normally spring-urged so as to align bore 49 with bore 46. A pin 54 on part 47 co-operates with a fixed rod 55, Fig. 4, to pivot part 47. A lever 57 on the magazine is actuated so as to release a screw at the required time, by a Bowden wire 56 connected to a lever 58, operated by a trip-block 60, carried by block 22. Part 47 has a pair of screw-holding spring- loaded fingers 61 screwed thereon. In operation, sleeve 14 and head 12 are moved together by piston 19 until the head engages the workpiece. The sleeve along with spindle 16 moves relative to head 12, and motor 17 rotates the spindle, and drives a screw. Forward and reverse movements of unit 15 are controlled by two microswitches 65, 66 actuated by a member 67, Fig. 4. Lever 58 is actuated so as to operate the gating mechanism 37 immediately after a screw has been driven home, and bore 47 of movable part 47 is aligned with bore 45 of fixed member 42, by rod 54 when the unit is fully retracted.
Patent GB-779798-A (GB)
Title: Improvements in or relating to devices for driving hardened steel dowels into walls,ceilings and other structures
IPC: B25C1/02
Filed: 1955-04-01
Abstract: 779,798. Nailing tools. BETTERMANN ELEKTRO GES. April 1, 1955 [Nov. 22, 1954], No. 9491/55. Class 89 (3). In a device for inserting dowels comprising a punch c slidable in a sleeve b having an enlarged head a for engaging the work, radial spring devices are provided in the head to engage and position a dowel n during driving. The spring devices may comprise plungers f, Fig. 1, controlled by an endless helical spring h, or inwardly directed spring arms r, Fig. 5, on an annulus o.
Patent GB-1207902-A (GB)
Title: Process for the production of zone plates
Inventor: RUDOLPH DIETBERT
IPC: G02B5/18
Filed: 1968-02-28
Abstract: 1,207,902. Zone plates. D. RUDOLPH and G. SCHMAHL. Feb. 28, 1968 [March 14, 1967; Jan. 19, 1968], No. 9560/68. Heading G2J. [Also in Division H5] A zone plate is produced by placing a layer of photo-sensitive material 5 in the image area of an interference figure 6 formed by the superposition of a planar wave and one or two spherical waves. After development, a supported or self-supported zone plate may be produced. In the former case, embodiments are described wherein the photosensitive material is supported on a radiation transparent base of synthetic material or metal, Fig. 4 (not shown) an intermediate metal layer 9 is provided which is etched using the developed image as a mask as shown in Fig.5; metal is vapourized or sprayed on to the developed image and a developer which loosens the image layer is used, Fig. 6 (not shown) the photo-sensitive material has metal included in the layer, Fig. 8 (not shown) the developed image is used as a mask in an electron microscope to bombard a supporting layer which is subsequently subjected to metal vapour, e.g. cadmium, which adheres to the bombarded areas , Figs. 10, 11 (not shown); an impression material is applied over the developed image which may either contain metal and thus form the final zone plate by subsequently applying a supporting film and removing the developed image, or the developed image may be removed, metal vapourized over the impression material, the elevated areas of the metal layer removed by cutting and a supporting layer applied; in a final embodiment, the initial supporting layer is a metal, and a metal is deposited over the developed image galvanically. In the production of selfsupported zone plate, Fig. 3, radially extending webs 8 are applied prior to the etching step. The resulting zone plate is used in image forming systems which use short-wave radiation, e.g. X-rays.
Patent GB-395823-A (GB)
Title: Improvements in or relating to coupling systems for thermionic amplifiers
IPC: H03F3/02
Filed: 1932-04-04
Abstract: 395,823. Valve amplifying circuits. RADIOAKT.-GES. D. S. LOEWE, 10, Wiesenweg, Steglitz, and KAPTEYN, P., 5, Schwalbacherstrasse, Friedenau, both in Berlin. April 4, 1932, No. 9566. Convention date, April 4, 1931. Addition to 395,056. [Classes 39 (i) and 40 (v).] In a thermionic valve amplifier of the kind described in the parent Specification, the gridcathode capacity of the first stage A1 is made larger than that of the second stage A2. This is ensured either by making the inter-electrode spacing G1, K1 less than that between G2 and K2, or by making the diameter of the cathode K1 larger than that of the cathode K2. The object is to increase the amplification of the first stage relatively to that of the second, in order to ensure the greatest possible overall amplification of the system consistent with stability. The arrangement may be applied to a multiple-stage valve or to two separate valves.
Patent GB-550955-A (GB)
Title: Improvements in and relating to means for holding objects
IPC: G01N27/84
Filed: 1941-07-29
Abstract: 550,955. Magnetic tests ; direct connection between conductors. FELL, H., and CREIGH, J. I. July 29, 1941, No. 9623. [Classes 37 and 38 (i)] [Also in Group XXIII] A device for holding objects such as centre punches h more particularly for permitting electrical currents to be passed through them for testing them magnetically for the detection of cracks comprises a gripping surface such as a number of layers of metal gauze a on a backing of rubber f distorted to convex form against a rounded base g within a cup c by the rim d of a screw cup e whereby penetration or depression in the surface is produced by the clamping pressure resulting in an'increased area of engagement by the contact surface.
Patent GB-954756-A (GB)
Title: Memory
IPC: G11C15/04
Filed: 1963-03-11
Abstract: 954,756. Permanent memories. RADIO CORPORATION OF AMERICA. March 11,1963 [March 28, 1962], No. 9637/63. Heading G4A. A content addressed memory is searched by applying one or more tag bits thereto, means being provided for reading out in a selected order all words having bits corresponding to the particular tag bits being searched. The memory described is a matrix array employing diodes at the cross-points. As shown, Fig. 2, a memory comprises seven rows and five columns, each column consisting of two wires, an a wire and a b wire, a diode connected between an a wire and a row wire representing a "1" and a diode connected between a b wire and a row wire representing a "0", so that the memory stores the words indicated at the right of Fig. 2. A column is 'driven by a "1"' by applying "1" to the a wire and "0" to the b wire, and is 'driven by a "0"' by applying "0" to the a wire and "1" to the b wire. Assuming that the tag chosen is "1, 1" applied to the first two columns i.e. each of these columns is 'driven by a "1"' then in rows 2-7 at least one of the diodes in the first two columns conducts so that these row wires are at a negative potential. In row 1, however, diodes 1a-1 and 2a-1 are both cut off and the row wire carries a positive potential and the only diodes connected to columns 3 -5 which can conduct are those in row 1. Sensing circuits in block 16 are thus effective to sense 11001 as output word, this being the word in row 1 and the only word in memory with the required "1, 1" tag. Assuming that the tag chosen is "0, 1" applied to the first two columns, then a 1, 1 pair is sensed in each of columns 4 and 5, the sensing of a 1, 1 pair indicating that there is more than word in the memory with the required tag. The logic circuits (Figs. 4-7 not shown) in block 16 then carry out the routine indicated in the flow chart, Fig. 3. The left-most column carrying a 1, 1 pair, i.e. column 4, is 'driven by a "0"' causing diodes 4a-2, 4a-5 to conduct and leaving row 3 only at a positive potential. There are thus now no columns at which a 1,1 pair appears and the required word in row 3 is sensed as 01000. The next step is to 'drive with a "1"' the column furthest to the right having a non-original "0" driver, i.e. column 4. The former procedure, commencing with driving the leftmost column carrying a 1,1 pair by a "0", is then repeated to read out firstly the word in row 2, and subsequently the word in row 5. It is stated in the Specification that it can be shown that the described routine is effective to extract the words having the required tag in lexicographical (i.e. numerical) order. By using an alternative arrangement of logic circuits (Fig. 8b, not shown), various preselectable orders of reading out sensed words may be effected. In alter'- native memory, Fig. 9, a data character may be stored in a "1-out-of-4, 1-out-of-9" code and each row may contain 80 such characters, corresponding to a punched card. The operation of this memory is analogous to that of Fig. 2.
Patent GB-755324-A (GB)
Title: Improvements in or relating to the machining of half bearing liners
Inventor: LOVE PHIL PRINCE
IPC: B23Q9/00
Filed: 1953-04-10
Abstract: 755,324. Making bearing-liners; planing. GLACIER METAL CO., Ltd. March 22, 1954 [April 10, 1953], No. 9792/53. Classes 83 (2) and 83 (3). Apparatus for machining a half-bearing liner 1 comprises means for positioning the liner rigidly in a semi-cylindrical cavity in a support 3 while the bore is machined in one sweep of a broad cutter 6 on a mandrel 5. The liner, which may be supplied automatically from a magazine, is clamped against fixed members 4 while the cutter is moved by a rack-and-pinion 7, 14 actuated by hydraulic means 8. The support 3 is then withdrawn to allow a new liner to be positioned while the cutter is returned to its initial position. The cutter may be shaped or so mounted as to give a tapered, bellmouthed or hyperbolic shape to the liner.