baber/WOPTO huggingface dataset:
Patent GB-701908-A (GB)
Title: Improvements in or relating to apparatus for and method of drying
IPC: F26B23/00
Filed: 1950-09-29
Abstract: 701,908. Drying air; drying systems; heating air; cooling systems for engines. AGRICULTURAL & INDUSTRIAL DRYERS, Ltd., and ROBIETTE, A. G. E. Aug. 24, 1951 [Sept. 29, 1950; Dec. 8, 1950], No. 23954/50. Classes 34(1), 34(2). and 64(3) In a process for drying crops &c. by passing warm, dry air over the material to be dried and in which the warm, dry air is produced by passing atmospheric air in sequence over the evaporator of a compression-expansion refrigerating system to cool the air and condense the entrained moisture and the condenser of the same system to heat the air, the drying air is continuously recycled in a closed circuit over the evaporator 3, the condenser 4, a heatexchanger 5 supplied with heat from the prime mover 15 for the refrigerating system, the material to be dried,and again over the evaporator. The compressor 2, evaporator 3, condenser 4, heat-exchanger 5 and fan 6 are enclosed in a duct 9 which is connected to drying chambers 7, 8 by ducts 11, 12 controlled by a two-way valve 13, the chambers 7, 8 being connected by a duct 14. Cooling water passes into the engine 15 via pipe 19 and after being heated passes through pipe 20, coil 21 of a heat-exchanger 22 and pipe 23 to heatexchanger 5. The exhaust gases from the engine pass through heat-exchanger 22 to raise further the temperature of the water passing through coil 21. The material may receive a preliminary drying in a chamber 26 through which atmospheric air is blown by a fan 27. Specification 656,898 is referred to.
Patent GB-731793-A (GB)
Title: Improvements in the manufacture of drying coating agents
IPC: C11C3/00
Filed: 1950-10-02
Abstract: In making drying coating agents either (a) a mixture of tall resin acids, substantially free from fatty acids, or (b) a mixture of tall oil fatty acids, substantially free from resin acids, both mixtures being obtained by high vacuum fractionation of raw tall oil, is esterified with a polyhydric alcohol, which may be used in stoichiometric excess.  In modifications, the resin acids may be reacted with ethylenic unsaturated compounds, such as maleic acid or styrene, prior to esterification, or the resin acids may be esterified in the presence of an aromatic polycarboxylic acid and the resulting product reacted with the tall oil fatty acids.  In examples: (1) resin acids are reacted with glycerine; (2) fatty acids are reacted with pentaerythritol; and (3) resin acids and phthalic acid are reacted with glycerine and the resulting product is reacted with tall oil fatty acids.  Solvents and drying agents (unspecified) may be added to the compositions.  Specification 698,548, [Group III], and U.S.A. Specification 2,365,300 are referred to.ALSO:In making drying coating agents either (a) a mixture of tall oil resin acids, substantially free from fatty acids; or (b) a mixture of tall oil fatty acids, substantially free from resin acids, both mixtures being obtained by high-vacuum fractionation of raw tall oil, is esterified with a polyhydric alcohol, which may be used in stoichiometric excess.  In a modification, the resin acids may be reacted with ethylenic unsaturated compounds, such as maleic acid or styrene, prior to esterification.  In examples (1), (3) the resin acids are reacted with glycerine; and (2) the fatty acids are reacted with pentaerythritol. Specification 698,548, [Group III], and U.S.A. Specification 2,365,300 are referred to.
Patent GB-521340-A (GB)
Title: Improvements in and relating to electric communication systems
IPC: H04J1/12
Filed: 1938-08-15
Abstract: 521,340. Multiplex transmission. TELEPHONE MANUFACTURING CO., 'Ltd., and PADDLE, L. H. Aug. 15, 1938, No. 24015. [Class 40 (iv)] A multiplex system comprises a number of suppressed-carrier channels occupying the frequency spectrum up to 20KC. and a number of transmitted carrier channels which are divided into groups such that after the first (or only) modulation stage the highest frequency in the groups is less than twice the lowest carrier frequency in the group. As shown, the suppressed carrier channels are fed to line through amplifier GA1 and filter GF1. The transmitted carrier channels are grouped in fours and modulate carriers of 20, 24, 28 and 32 KC. respectively. Three bf these groups are then raised in frequency in further modulators GM1, GM2, GM3. The converse arrangement is used at the receiver. In a repeater arrangement Fig. 3 (not shown), the transmitted band is split into groups by filters so that in any group no harmonic of a carrier falls within the range of the group, each group being amplified separately.
Patent GB-968937-A (GB)
Title: Hydraulic systems
Inventor: GODFREY PETER BRIAN
Filed: 1962-06-22
Abstract: 968,937. Linkwork. JOSEPH LUCAS (INDUSTRIES) Ltd. Aug. 8, 1963 [June 22, 1962], No. 24060/62. Heading F2K. [Also in Division F1] The, stroke control member 7 of a variable stroke hydraulic pump is actuated from a hand setting member 6 through a pair of levers 1, 2, interconnected by a link 3 and by a piston and cylinder device 4 which is expanded by a spring 8 and contracted by pump output pressure transmitted through pipe 4c. If the pump delivery pressure increases at any given setting of member 6, the device 4 contracts to move the member 7 in the increased delivery position. The levers 1, 2, are provided with a number of holes to permit adjustable positioning of the device 4.
Patent GB-899122-A (GB)
Title: Improvements in or relating to fluid pressure control valves
IPC: E21D15/51
Filed: 1957-07-30
Abstract: 899,122. Hydraulic pit props. MASTABAR MINING EQUIPMENT CO. Ltd., TEBB, B., and PERRY, C. H. July 23, 1958 [July 30, 1957], No. 24075/57. Class 20(2) [Also in Group XXIX] An hydraulic pit prop comprises telescopically engaged members 10, 12 the latter of which has a ram 16 disposed in a pressure chamber 14. A duct extends from the chamber 14 to a relief valve comprising a spring loaded closure member which co-operates with a seat on a member which is movable by the applied fluid pressure to an extent determined by a fixed stop.
Patent GB-1200137-A (GB)
Title: Improvements in or relating to silk screen printing presses
Inventor: SVANTESSON AKE
IPC: B41F15/42
Filed: 1968-05-21
Abstract: 1,200,137. Silk screen printing apparatus. A. SVANTESSON. 21 May, 1968 [23 May, 1967], No. 24097/68. Heading B6C. Squeegee carrier d, which may carry a blade and an ink container, so as to spread ink over a silk screen, has on it a permanent magnet e and magnetically actuated switches a, b, located on a rail c parallel to the direction of reciprocating movement of the carrier, indicate when it reaches the limits of its travel. The switches a, b are adjustable along rail c to vary their spacing and the travel of the carrier. They may be reed switches or relays.
Patent GB-1286205-A (GB)
Title: A hanging roof structure
Inventor: BILLGREN KARL LENNART
IPC: E04B7/14
Filed: 1970-05-19
Abstract: 1286205 Suspended roof K L BILLGREN 19 May 1970 24190/70 Heading E1W A suspended roof structure 7 comprises a peripheral latticework load dispersion ring supported on the outer wall 2 or columns, not shown. The roof covering 1 of glass fibre reinforced plastics or of laminated wood may be suspended from lines 5 between the upper outside peripheral part 25 of the ring and a centre attachment means 3 or may rest on lower lines 27 between the attachment means 3 and the inner lower peripheral part 23. The lattice units may comprise right triangular prisms with vertices 9, 9, 8, 19, 19, 18 each edge being defined by a strut. Additional struts connect the vertices 8 with those 19 and the vertices 18 may also be connected by a strut. Additional lines (29) Fig. 2 (not shown) may extend from the upper outer periphery of the ring to the roof in order to prevent sagging and from a lower region of the wall to the roof in order to hold down the roof against wind forces. Further support lines may be connected between the lines 5 and the roof may be circular, triangular or D-shaped.
Patent GB-831083-A (GB)
Title: Improvements relating to traction vehicles having axle-hung traction motors
Inventor: WHYMAN FRANK
IPC: B61C9/44
Filed: 1956-08-07
Abstract: 831,083. Mounting motors. METROPOLITAN-VICKERS ELECTRICAL CO. Ltd. July 25, 1957 [Aug. 7, 1956], No. 24204/56. Classes 79(2) and 79(3) A traction motor is supported by a hollow shaft 5 which surrounds the axle 1 and transmits the drive thereto through spider - like structures 8 and bearing members 10 mounted on the legs 9 of the spiders for limited radial movement, a normally compressed resilient pad 11 transmitting torque between each member 10 and a surface on the wheel and urging the member into engagement with a surface 8<SP>1</SP> on the structure 8. The pads 11 are preferably bonded to the members 10 and are held in compression by wedge-shaped liners 12 to which the pads may also be bonded. Circumferential stops 13 and retaining pieces 14 locate the liners 12 on a flange 4 of the wheel. The members 10 are axially located between the spider 8 and a ring 16 which is secured to the spider by bolts 17, the bolts being passed through slots 19 in the members 10 to permit them to move radially. Projections 20 on the wheel having a clearance, for example one five-thousandth of an inch from lips 21 on the members 10 limit the inward movement of the latter. Abrasion-resisting non-metallic linings and facings may be used on sliding and abutting surfaces as indicated at 22.
Patent GB-209138-A (GB)
Title: Improved process for rendering materials waterproof
IPC: D06M15/17
Filed: 1922-09-07
Abstract: 209,138. Vielle, J. A. Sept. 7, 1922. Liquids, treating with.-Textile materials are waterproofed by impregnation with the artificial aqueous colloidal dispersion of an insoluble proofing agent and then evaporating off the water. Paraffin wax and a mixture of asphalt and " transoil " are mentioned as being suntable proofing agents. The colloid mills described in Specifications 155,836 and 176,002, [both in Class 59, Grinding, crushing, &c.], are referred to.
Patent GB-856276-A (GB)
Title: Improvements relating to multi-toothed cutting tools of sheet metal
IPC: B23D65/02
Filed: 1957-07-31
Abstract: 856,276. Drills; milling-cutters &c. and making drills &c. BOOTH, C. H. July 18, 1958 [July 31, 1957], No. 24212/57. Classes 83 (2) and 83 (3). [Also in Group XXIII] A cutting-element of sheet-metal comprises cutter portions 2 having sharpened and hardened cutting edges 6 with positive rake-andclearance angles, and means for controlling the depth of cut of the edges. In Fig. 1, this control is effected by a heel 10 of the portion 2, which is of arcuate form. Alternatively, the control may be effected by the wedging force of a side-cutter, portion 2 being flat, or both these controls may be provided, as in Fig. 3. Instead, a protuberance 106, Fig. 24, may be used on the cutter portion 104 and a protuberance 112 on the tapering side-cutter 102. A pair of elements 25, Fig. 7, as shown in Fig. 1, but with oppositely directed portions 28, are joined by pieces 27 and may be operated by a handle. A single element 25 of annular form (Fig. 12, not shown), which may have sidecutters, can be used for cutting annular grooves. In the rotary planing cutter 42, Fig. 14, the side-cutters 44 may control the depth-of-cut, but the main cutters 48 may also be curved for this purpose. The channel-shaped element 61, Fig. 16, of the hand-tool 68 is made by shearing and setting-up parts 71-73, Fig. 18, removing, as by grinding, the upstanding parts to form cutting edges 65, 67, and shearing off unwanted parts before bending to channelshape. Element 61, in circular form, may be used for annular grooving or, with the teeth on its outer circumference, Fig. 21, straightgrooving. With the side-cutters controlling the depth-of-feed, cutter portions 64 need not be curved to form a controlling heel. The element in the form of a drill, Fig. 22, has main cutting portions 81, 82 of curved-form for depth-of-cut control, and a ring of side-cutters 87. Cutters 92 are counterborers. Specification 856,278 is referred to.
Patent GB-1064705-A (GB)
Title: Apparatus for measuring direct current impulses
IPC: G01R19/04
Filed: 1965-06-08
Abstract: 1,064,705. Measuring D. C. impulses. BROWN, BOVERI & CO. Ltd. June 8, 1965 [June 10, 1964], No. 24238/65. Heading G1U. An apparatus for measuring D. C. current impulses on a line 1 comprises a current transformer 2 having two secondary windings 2.1 and 2. 2. Across the first of these, 2.1, a load 4 is connected via an amplifier 3, and across the load is connected an ammeter A or oscilloscope, the return connection to the transformer winding being via a normally conducting transistor 5 and earth. The purpose of the amplifier is to compensate for voltage loss across the transformer and other impedances in the system. The amplifier is normally switched off, but is activated on the application of a pulse by a control winding to  which the second secondary winding 2. 2. of the current transformer is connected. In order to ensure that the amplifier 3 is properly returned to zero between input pulses the apparatus may incorporate a second current transformer 7 which by means of a filter 8 derives a sine waveform from the input current pulses. At the zero crossings of these sine waves, i. e. at times intermediate those of the pulses on the line, an impulse generator 10 delivers pulses to control the transistors 5 and 11, which are of opposite types, in such a way that transistor 5 is switched off and 11 is switched on. The switching on of transistor 11 establishes a feedback path around the amplifier 3 through the winding 2. 2 such that any output from it tends to operate the control input in such a way as to,turn it off. The transformer windings are normally mounted in a probe which can be clamped about a selected current carrying wire.
Patent GB-1021404-A (GB)
Title: Improved film roll suspension piece
IPC: B65D85/67
Filed: 1964-06-11
Abstract: 1,021,404. Film spools. E. I. DU PONT DE NEMOURS & CO. June 11, 1964 [June 12, 1963], No. 24303/64. Heading B8M. [Also n Division G2] A film roll suspension piece for use in the transport of films is integrally moulded in one piece from plastics material and comprises a hollow flanged hub 9 with reinforcing ribs 13, there being radial channel section support members 5 extending from the hub to an outer, channel section, periphery 1 having an octagonal form with four straight and four curved opposite sides. The film is supported on ribs 12 on the outer surface of hub 9 and in the recess 14 formed adjacent the hub in flange 15. Two suspension pieces are placed together to form a spool for the film. The plastics material may be high density polyethylene, polypropylene, high impact polystyrene, nylon, or polyester resins.
Patent GB-406699-A (GB)
Title: Improvements in or relating to echo sounding apparatus
IPC: G01S7/58
Filed: 1932-08-31
Abstract: 406,699. Echo-sounding and distancemeasuring apgaratus. MARCONI SOUNDING DEVICE CO., Ltd., Marconi House, Strand, and SLEE, J. A., 92A, Holland Road, West Kensington, both in London. Aug. 31, 1932, No. 24324. [Class 118 (ii).] In echo-sounding apparatus in which the received echo causes a moving light source to jump at right angles to its normal direction of movement, and the apparatus used to convert the received impulses into movements of the source of light is rotated, the light is reflected onto a matt reflecting scale calibrated in distances so that it can be viewed from the same direction as that from which the light comes. The sound is produced by spark gaps co-operating with a piezo-electric device, the gaps being adjusted to allow for deep or shallow echo effects. Adjustment according to the strength of the received impulses is also provided. To operate the device contacts S1, S2 and either S3 or S4 are closed and the gramophone type motor carrying oscillograph 17 and conducting rings 14, 15, 16 is started. A cam, not shewn, closes contact 6 slowly and then opens it quickly so that one or more of the spark gaps 8, depending on whether S3 for shallow water or S4 for deep water is closed, operates and an impulse is transmitted by device 11. The echo is received by 11 and passes from 12 through the amplifying and receiving network shewn in Fig. 3 to contacts O +, O - whence it reaches the oscillograph 17 over rings 14, 15 and causes the mirror to swing and the light reflected on the screen 23 to jump. As the transmitted impulse also reached 12 and 17 to cause a jump the distance between the two jumps indicates the depth. The scale on the screen 23, which is marked directly in depths has a matt reflecting surface so that the scale can be viewed from the same side as the light source. The light is provided by lamp 18 carried on the gramophone turntable and fed over ring 16, and is focused just in front of the arcuate scale by condenser 20, movable mirror 21, and the oscillograph mirror 22. An adjustable resistance 27 allows the observed signal strength to be varied to allow for variation in the reflecting properties of the sea bed and the like. On and off indicating lamps 24, 25 are also provided.
Patent GB-783283-A (GB)
Title: Improvements in or relating to magnetic transducing heads for use in magnetic recording or reproducing apparatus
Inventor: MARTIN MICHAEL BLACKMORE
IPC: G11B5/10
Filed: 1954-08-21
Abstract: 783,283. Magnetic transducing heads. ELECTRIC & MUSICAL INDUSTRIES, Ltd. Aug. 18, 1955 [Aug. 21, 1954], No. 24389/54. Class 40 (2). A magnetic recording, reproducing or erasing head for a magnetic recording or reproducing apparatus comprises a magnetic core 1, 2 having a pair of pole portions 3, 4 defining a non-magnetic gap therebetween and a preformed non- magnetic grooved member 13 embraced by the pole portions in such manner that the latter are disposed in the groove 16 of the member 13, the front surfaces of the pole portions and of the member forming a smooth substantially continuous surface. As shown, a non-magnetic spacer 7 may be disposed in the gap, a winding 10 on a former 11 surrounds rear ends 8 and 9 of the core members, the said continuous surface which is ground or honed is arranged to project through cut-out in a screening can 19 free space in the can being filled with an epoxy resin, and lead wires 22 pass out through a, bush 21. A retainer 24 engaged by a screw 25 secures the head unit in the can 19. The core members 1, 2 may comprise stacks of laminations or, preferably, a hard magnetic ferrite material, and may have similar wear-resisting properties to those of the groove forming portions 14, 15, which may be of ceramic material, of the member 13. The head is applicable to one track of a twin track tape.
Patent GB-1341276-A (GB)
Title: Means for axially locating in one direction two machine compo nents
IPC: F16C35/063
Filed: 1971-04-19
Abstract: 1341276 Mounting parts on shafts SKF KUGELLAGERFABRIKEN GmbH 19 April 1971 [21 Feb 1970] 24457/71 Heading F2U A machine part 2 (e.g. a bearing race) is axially located on a shaft 1 by an arrangement comprising a nut 6 screw-threaded on to a ring 3 encircling the shaft, axially abutting segmental keys 7 seated in flats 8 on the shaft and retained by a ring 11. The ring 3 may have projections extending axially towards the ring 11 between the keys 7. The nut 5 may extend as at 12 and mount an L-shaped piece 16 engaging recesses 15, 18 to lock the nut on the ring.
Patent GB-644972-A (GB)
Title: Improvements in and relating to moulds for casting metal
Filed: 1948-09-18
Abstract: 644,972. Chills and denseners; casting composite articles; building up articles by spraying. COHEN SONS & CO., Ltd., G., and LEVY, F. L. Sept. 18, 1948, No. 24504. Drawings to Specification. [Classes 83 (i) and 83 (iv)] A chill or densener is formed in a mould by spraying powder of a metal of the periodic series including chromium, nickel and iron. The layer may vary in thickness and extent or be uniform and 0.02 inch thick in which case the layer becomes a sintered coating on the casting. If the layer is thick, e.g. ¢ inch, it may be keyed to the sand by first forming recesses therein.
Patent GB-1475268-A (GB)
Title: High power helix travelling wave tubes
IPC: H01J23/26
Filed: 1975-06-06
Abstract: 1475268 Travelling-wave tubes VARIAN ASSOCIATES Inc 6 June 1975 [13 June 1974] 24513/75 Heading H1D The normal positive dispersion of a travelling-wave tube helix; supported from a metal envelope 9 by electrically insulative but thermally conductive rods 11, is rendered less positive, or is rendered negative, by interposing between the helix and the envelope a plurality of axially extending, arcuate, dielectric members 26, radially spaced from the helix, and formed either of alumina ceramic (Fig. 11, not shown) or, as shown, of quartz having arrays of electrically conductive stripes 27 formed on their inner surface e.g. by photoetching a copperplated molybdenum layer. Prior art arrangements in which an array of axially extending fine wires is mounted around the helix (Fig. 4 not shown), or a plurality of axially extending conductive vanes project from the envelope towards the helix (Fig. 5, not shown), or the helix is supported in a glass envelope by inwardly projecting flutes formed in the envelope wall (Fig. 6, not shown), are referred to.
Patent GB-615874-A (GB)
Title: Improved suspension systems for vehicles
IPC: B60G15/06
Filed: 1946-08-17
Abstract: 615,874. Vehicle suspensions. KENNINGTON, W. O. Aug. 17, 1946, No. 24532. [Classes 108 (ii) and 108 (iii)] Relates to a vehicle suspension system in which the vehicle body is supported on each wheel through the interposition of a circulating column of liquid under pressure and each wheel has a shock-responsive piston and cylinder 7, 8 which transmit pressures caused by high upward acceleration of the wheel and thereby effect a momentary relief of the support pressure and permit a momentarily unrestrained movement of the wheel relative to the body. Two suspension means in series support the body, comprising firstly a circulating column of fluid supplied by an enginedriven pump 16 and acting on a piston 12, and secondly a spring 4 acting on a wheel-supporting arm 2. The arm 2 is pivotally and slidably connected to an upright arm 6 which is pivoted on the chassis and connected by a shackle 10 to the piston rod 11. Normally the hydraulic pressure gives the spring action but excessive upward acceleration of the wheel 1 causes the spring 4 to flex, the arms 2, 6 to approach each other and pressure to be created in the cylinder 8 by movement of the piston 7, which has a metering orifice 9. This pressure, transmitted by a pipe 25, causes a floating piston 22 to open a valve 19, so allowing fluid to escape through ports 20 to an exhaust passage 18 and permitting momentarily free movement of the wheel. Fluid displaced from inside the piston rod 11 escapes through ports 20. Fluid pressure disappears when the engine stops and the body sinks until the arms 2, 6 rest on rubber stops (not shown). On starting the engine, fluid pressure drives the piston forward until sufficient of the graduated port 17 is uncovered to establish equilibrium. The metering orifice 9 may be dispensed with if the cylinder 8 is connected to the chamber 23 by a second pipe containing a metering orifice; valve mechanism outside the cylinder 13 may replace that in the rod 11; the cylinder 13 may contain an airspace.
Patent GB-170453-A (GB)
Title: Improvements in stands for displaying millinery and the like in shop windows and other places
IPC: A47F7/06
Filed: 1920-08-24
Abstract: 170,453. Gower, F. C. Aug. 24, 1920. Pedestal, pillar, and like stands.-A stand for displaying goods comprises a vertical rod and a two. part supporting base, one part b being secured to the vertical rod c and the other part a being slidably mounted on the rod so that it can be raised and turned into the plane of the part b. The rod c is provided with a detachable head d.