baber/WOPTO huggingface dataset:
Patent GB-1280048-A (GB)
Title: Pilot bleed system for remote control valve operation
IPC: E02F9/22
Filed: 1969-09-30
Abstract: 1280048 Valves CATERPILLAR TRACTOR CO 30 Sept 1969 [31 Oct 1968] 47982/69 Heading F2V [Also in Divisions E1 and G3] A valve spool 21 controlling the bowl lift jacks of an earthmoving scraper is displaced from its spring-centred neutral position by pistons 41 responsive to control pressures in chambers 40 supplied from pump 50 via spring-closed spools 55. Bleed lines 14 with restrictors 61 lead to remote pilot valve 11 having a spool 72 which, in neutral allows equal bleed rates sufficient to allow pump pressure to position spools 55 as shown. Movement of spool 72 closes one bleed line to establish a pressure balance across the associated spool 55 whereby the latter vents chamber 40 to cause movement of spool 21. In the "lower" position of spool 72, line 95 is vented to allow fluid at 80 pressurized by the bowl to shift spool 92 leftwards whereby, if spool 83 rises due to a loss of pump pressure, the fluid can flow via 84, 86, 88 to chamber 90, thereby shifting spool 21. In a similar system, Fig. 2 (not shown), controlling a scraper ejector, spool 72 is held in the "retract" position by fluid pressure once moved and is automatically released upon completion of retraction.
Patent GB-1198896-A (GB)
Title: Protective Apparatus for Machine Tools
IPC: F16P3/08
Filed: 1968-10-10
Abstract: 1,198,896. Machinery guards. HAHN & KOLB. 10 Oct., 1968 [13 Oct., 1967], No. 48025/68. Heading F2J. [Also in Division F4] In a machine having an aperture 3 in a wall 1 of a machining chamber 2 through which aperture workpieces W mounted on a work holder 4 are pivoted into the machining chamber 2, the aperture 3 is adapted to be closed before and after the pivotal movement of the work holder 4 by a two-leaf revolving door 7, 8 the pivotal drive of which is coupled to the pivotal drive of the work-holder 4. A cam disc 20 on a pivot shaft 19 of work-holder 4 has a cam groove 18 which is engaged by a pin 17 on a lever 16 pivotally mounted at one end 15 and connected at its other end to a rod 14. A lever 13 is provided on a pivot shaft 9 of the revolving door 7, 8 and is connected to the upper end of rod 14. Protective frames 12 corresponding to the pivoting sector of the door leaf 8 are arranged externally of the wall 1 at the sides of the aperture 3. In a modification, an hydraulically operated pivoting drive comprises a cylinder 25 containing a piston 26 constructed as a rack which meshes a pinion 30 arranged on the door pivot shaft 9. The ends of the cylinder 25 are connected to supply conduits 27, 28 which together with a pivoting cylinder for the workholder 4 are connected to a valve control system. Apart from keeping the work introduction aperture closed during work changing, the door minimises the possibility of escape of gases from the machining chamber.
Patent GB-1490337-A (GB)
Title: Extrusion processes
IPC: B29C48/90
Filed: 1973-10-15
Abstract: 1490337 Extruding blown film BAKELITE XYLONITE Ltd 15 Oct 1974 [15 Oct 1973] 48047/73 Addition to 1364236 Headings B5A and B5B In the parent Specification a cylindrical thermoplastics tube is extruded vertically downwardly, whilst supported by an internal air pressure, into an external water cooling bath from which it is drawn by nip rollers which flatten it across only part of its width, the tube being internally sized in the bath in passage around axially spaced edges of a sizing member supported from the extrusion die, and being internally cooled by water which is continuously circulated from below to above the sizing member in passing through and around the sizing edges of the member. The modification of the present Specification comprises at least the sizing edges of the member being of a waterabsorbent material, so that a lubricating layer of water is formed between the sizing edges and the tube, thereby facilitating the extrusion of a tube which does not contain a lubricant additive, e.g. a tube of an electrical grade polypropylene. The liquid absorbent material may comprise a synthetic or natural open pore sponge material, e.g. sponge rubber, polyurethane or polyvinyl chloride, porous leather, open pored sintered metals, cloth, e.g. as layered or laminated pads, string or cord, open pore minerals, e.g. chalk, paper or cardboard, or a felt as in the described embodiment. The sizing member may comprise an assembly of sizing discs each carrying a peripheral band of the absorbent material, or may comprise a disc of absorbent material which may either be supported, or not supported, on both sides by a rigid material. In the embodiment, calibrating discs each comprise a layer of felt 5 supported on each side by aluminium plates 8 to which they are adhered by silicone rubber adhesive and spaced apart by brass baffle discs 4, the circulation of water through the discs 5, 8, being permitted by through holes 6 spaced apart around the periphery, and the discs 5 being of smaller diameter and rebated on each side around their periphery. The assembly of discs is clamped together to define the sizing member on a tube 3, in sealed engagement at an 0-ring 9a with an inner tube 9, between a lower brass nut 2, and an upper threaded baffle disc (not shown) having an upper face with an inwardly inclined periphery which functions as a weir over which the circulating water pours to be removed by the suction. The embodiment relates to the extrusion of a polypropylene tube which, after the cooling, is converted into a balanced biaxially oriented film of 0À3 mil thickness, by conventional bubble blowing.
Patent GB-1195258-A (GB)
Title: Optical System
IPC: G02B17/06
Filed: 1967-10-24
Abstract: 1, 195,258. Photo-electric devices. ELTRO G.m.b.H. & CO. GES FUR STRAHLUNGSTECHNIK. Oct.24, 1967 [Nov.2, 1966], No.48300/67. Heading G1A. An apertured concave mirror 1 and concave mirror 2 form an annular image in a plane 3 which is projected on to an annular photo-sensitive surface 7. A chopper 4 located at the plane 3 as well as rotating about its own axis rotates about the optical axis of the system. The apparatus may be used to locate distant objects and may receive infrared radiation.
Patent GB-1174775-A (GB)
Title: Improvements in or relating to Air Pressure Operated Braking Systems
Inventor: PAGE WILBUR MILLS
IPC: B60T8/18
Filed: 1966-10-28
Abstract: 1,174,775. Air-operated braking systems. CLAYTON DEWANDRE CO. Ltd. 10 Oct., 1967 [28 Oct., 1966], No. 48473/66. Heading F2F. In an air pressure operated braking system for a motor vehicle fitted with air suspension incorporating a light/laden control valve 1 of the type described in Specification 1,077,954, actuated through a lever 6 by a control cylinder 8 responsive to pressure in the air suspension system, an additional cylinder 14 is provided which is responsive to the reservoir pressure and which is also connected to the lever 6. In the event of loss of pressure in the suspension system, the additional cylinder moves the lever 6 and hence the fulcrum 2 of the beam 3, to counteract the "light" setting of the control cylinder 8 and thus maintain the valve 1 in the setting for maximum braking. The control cylinder 8 may be of the stepped piston type, the piston being provided with two faces of equal area responsive respectively to suspension system pressure at opposite sides of the vehicle Fig. 2 (not shown).
Patent GB-1403960-A (GB)
Title: Electrical cable
IPC: H01B13/14
Filed: 1973-10-18
Abstract: 1403960 Cable insulating compositions ANACONDA CO 18 Oct 1973 [29 Dec 1972] 48611/73 Heading C3P [Also in Division H1] The cable comprises two distinguishable but bonded insulation layers 13, 14 the inner one mainly of a terpolymer rubber or ethylenepropylene copolymer, the other of mainly crosslinked polyethylene, both layers having a common cross-linking agent such as di-α- vinyl peroxide. The insulation layers surround a metallic conductor 11 sheathed in semiconducting polymeric material 12, and are surrounded by a semi-conducting polymeric jacket 21 having drain wires 22 embedded therein. Alternatively, the insulation layers 13, 14 can be covered by an insulation shielding layer (66, Fig. 1, not shown) overlaid by Cu or Al tapes (17) covered, in turn, by a protective jacket (18). The rubber layer may contain up to 30% by weight of cross-linked polyethylene and similarly the polyethylene layer may contain up to 30% by weight of rubber. Clay and other materials may be included in the layers. An example of a terpolymer rubber given is ethylene - propylene - 1,4 - hexadiene with the following: carbon black, silicone treated clay, lead monoxide, silane, antioxidant, zinc oxide, paraffinic oil, paraffin, di-α-cumyl peroxide, sulphur. An example of ethylene-propylene copolymer given is ethylene-propylene with the following: zinc oxide, silicone treated clay, carbon black, polymerized trimethyldihydroquinoline, PbO 2 , silane, di-α-cumyl peroxide, sulphur.
Patent GB-1004754-A (GB)
Title: Control circuits for electronic switches
Inventor: LUCAS PAUL GLOVER
IPC: G06G7/06
Filed: 1962-12-27
Abstract: 1,004,754. Electronic switching circuits; pulse multiplex circuits. ADAGE Inc. Dec. 27, 1962, No. 48724/62. Headings H3P, H3T and H4L. An electronic switch or gate is controlled by an energy storage device which, when a control signal is of one polarity, charges and when the signal is of opposite polarity discharges through the switch to render it conductive, diodes being provided to isolate the capacitor from the control signal source during the conductive period of the switch. Fig. 1 shows a transistor 12 operating in the inverse manner (i.e. with the functions of emitter and collector interchanged) to connect input signal terminals 11, 11<SP>1</SP> to output terminals 21, 21<SP>1</SP>. When the output from a bistable control circuit 15 is positive a capacitor 14 is charged through a circuit 16, 17, 22 and the transistor is non-conductive. When the signal from the control circuit is negative diode 16 is cut-off to isolate the control circuit from the transistor and the capacitor discharges through the base-collector circuit of the transistor rendering the transistor conductive until the control circuit changes over again. When the transistor is conductive diode 22 remains conductive but is of high impedance. In Fig. 3, isolation of the input terminals from the transistor is provided during both " on " and " off " periods. When the control voltage from 62 is positive the capacitor 72 charges through the circuit 70, 78, 74, 68, and the transistor is non-conducting and diodes 86 and 88 isolate the control circuit from the transistor. When the control voltage from 62 is negative, diodes 68 and 70 are non-conductive and the capacitor discharges through the circuit 76, 86, the collector-base path of the transistor 88 and 80, rendering the transistor conducting. In Fig. 4 (not shown) the transistor circuit is replaced by a diode bridge gate. A pulse multiplex system may utilize a number of the gates to connect a plurality of analogue signals in turn through an amplifier to a common output line, negative feed-back being provided between the output of the amplifier and the input of each gate (Fig. 2, not shown).
Patent GB-1104117-A (GB)
Title: Organosilicon compositions
IPC: C08K5/01
Filed: 1965-11-18
Abstract: A liquid, curable composition consists essentially of (a) 10 equivalent of RHSiO, present as a polysiloxane having a unit ratio of 10 RHSiO units/100 to 1000 R2SiO units, where R is a monovalent hydrocarbon radical free from aliphatic unsaturation, there being an average of more than 2 RHSiO units per molecule, (b) from 9 to 11 equivalents of a liquid alpha, omega diolefin, and (c) a catalytic amount of platinum, the equivalents of terminal olefin groups present being within 10% of the equivalents of the RHSiO units. Chloroplatinic acid is the preferred catalyst.  The diolefins, e.g. hexadiene-1,5, octadiene-1,7, 2-ethylhexadiene-1,5, decadiene-1,9, octadecadiene-1,17 and divinylbenzene, serve as cross-linking agents. The products are resins, rubbers or gels.  Plasticizers, colouring, internal olefins, fillers and other silicones may also be added.  In a typical Example (1) a liquid (CH3)3SiO-terminated siloxane composed of CH3.H.SiO and (CH3)2SiO units was reacted at room temp. with hexadiene-1,5, in the presence of chloroplatinic acid to yield a rubber.  Uses: for potting electronic components.
Patent GB-1083360-A (GB)
Title: Improvements in or relating to cable and like handling devices
Inventor: POLLARD THOMAS
IPC: E21F13/06
Filed: 1964-12-03
Abstract: 1,083,360. Guiding cables. GULLICK Ltd. Nov. 22, 1965 [Dec. 3, 1964], No. 49125/64. Heading B8B. A device for handling cable C at a coalface comprises two tracks 10, 11 supported along the face by roof beams, Fig. 12 (not shown), hangers 22 supporting the cable at intervals and slidable in the tracks 10, 11, and transfer points 20 between the two tracks 10, 11 at intervals therealong for the transfer of hangers 22 between the tracks, such that each hanger follows a figure eight path when moving from end to end of the coal face. The cable C has one end fixed midway along the coal face, and the other end coupled to the face machinery moving along the face. As the machinery moves to one end of the face, all the hangers are pulled along the track 10, opening spring-biased gates 19 as each hanger passes. On the return run of the machinery, each hanger 22 engages its corresponding gate 19 and is transferred to the track 11. At the mid-way point, all the hangers engage a similar gate and are transferred back into track 10 until the other end of the face is reached whereupon a similar transfer operation is carried out. A loose-ended flexible wall portion 14 is inserted adjacent the gate 19 in the track to which the hanger is transferred. The cable is supported in swivel devices 23 pivotally attached to the hangers 22 at 24. The hangers may be connected by a chain 26 to relieve tension in the cables.
Patent GB-1063208-A (GB)
Title: A cover for a vegetable shredder
IPC: B26D7/06
Filed: 1963-12-13
Abstract: 1,063,208. Cutting vegetables. G. BAUKNECHT G.m.b.H. ELECTROTECHNISCHE FABRIKEN. Dec. 13, 1963 [Dec. 15, 1962], No. 49383/63. Heading A4C. A vegetable shredder or like comminuting device includes a cover 1 having a feed shaft 2 divided into two shafts a, b of different cross-section by a partition 3 which is removably located in the shaft 2. The partition 3 is slidably received in grooves 4 provided in the feed shaft 2 to be a tight fit therein, the grooves 4 having a terminal abutment to limit the extent to which the partition 3 is inserted and thereby prevent the latter from fouling the rotary cutter.
Patent GB-1453078-A (GB)
Title: Transducer device with temperature compensation mechanical actuator having presettable positions
IPC: G12B7/00
Filed: 1973-10-24
Abstract: 1453078 Temperature compensating transducer circuits BELL & HOWELL CO 24 Oct 1973 [27 Oct 1972 (2)] 49479/73 Heading G1N A transducer device comprises a transducer 10, e.g. a four element semi-conductor strain gauge bridge, having input terminals 11, 12 and an overall negative temperature coefficient of voltage that causes an error in the output voltage at temperatures other than that at which the transducer is calibrated, and a compensation circuit 13 of one or more temperature responsive diodes connected in series with the input terminals of the transducer to compensate for said error. In a preferred embodiment Fig. 1, of which the block diagram of an equivalent circuit is in Fig. 3 (not shown) the source voltage and the number of diodes are chosen so that the percentage change in output voltage caused by the diodes is the same as the percentage change in output voltage due to the change in sensitivity of the transducer with a change in temperature. Alternatively Fig. 4 (not shown) a sufficient number of diodes (40) is employed to provide an overall positive temperature coefficient for the combination of the diodes and transducer and a positive temperature coefficient resistor (46) is connected in series between the transducer (41) and voltage source (42).
Patent GB-1240572-A (GB)
Title: Etched articles & process for making same
IPC: B44C3/04
Filed: 1969-10-09
Abstract: 1,240,572. Moulding plastic substances. AMERICAN STANDARD INC. 9 Oct., 1969 [22 Nov., 1968], No. 49551/69. Heading B5A. A plastics article with a decorative surface is moulded by first applying a plastics coating 12 in a pattern to the polished surface of a mould 10 by means of a stencil or a silk screen process, the coating including a filler which is non- polishable, then applying a second plastics coating 14 having a filler of good polishing characteristics over the first coating and the rest of the mould surface, and finally applying a fibre-glass reinforced resin 16 to provide the desired article thickness. On removal from the mould surface the facing surface of the article is subjected to a polishing action to provide contrasting surfaces. The coatings may comprise polyester resin.
Patent GB-1074860-A (GB)
Title: Tensioning device for recorder chart paper
IPC: G01D15/28
Filed: 1965-11-23
Abstract: 1,074,860. Feeding webs. LEEDS & NORTHRUP CO. Nov. 23, 1965 [Dec. 11, 1964], No. 49727/65. Heading B6B. [Also.in Division G1] In recording-apparatus 10 having a drive roll 13 with sprocket teeth 13a, 13b, engaging holes 11a, 11b in a paper chart 11, the chart 11 is kept in tension round the roll 13 by its engagement with the resiliently deformable surfaces of members 17, 18 pressing it against the roll 13 or against a backing-up bar (32), Fig. 3 (not shown), a gear train 21, 20 or band (34) and pulleys (33), (35) driving the members 17, 18 faster than and in frictional engagement with the chart 11 to maintain it in tension. The members 17, 18 may be made of synthetic rubber with fingers inclined with respect to the radial direction either towards or away from the direction of chart movement according to the degree of tension required. The chart may be torn off against the bar (32).
Patent GB-1487884-A (GB)
Title: Hydrostatic transmission control
IPC: B62D11/04
Filed: 1975-02-13
Abstract: 1487884 Hydrostatic transmissions SUNDSTRAND CORP 13 Feb 1975 [13 Feb 1974] 49772/76 Divided out of 1487883 Heading F2W The subject-matter of this Specification is identical with that described in Specification 1,487,883 but the claim relates to the arrangement of, and interconnection of, the follow-up servos in one of the transmissions.
Patent GB-1201476-A (GB)
Title: Fastener driving tool
IPC: B25C1/04
Filed: 1967-11-03
Abstract: 1,201,476. Fastener driving tool. FASTENER CORP. 3 Nov., 1967 [19 Dec., 1966], No. 50049/67. Heading B4C. A pneumatically-actuated tool for driving fasteners comprises a piston 26 movable in a cylinder 18 by means of compressed air fed from a reservoir 16 under the control of a valve 20, a piston return reservoir 76, a first sealing ring 86 located in a groove 82 in the piston and a second sealing ring 92 located in a groove 84 and normally adapted to seal a number of ports 90 but arranged to move away from the ports so as to admit air into the return reservoir at the end of the driving stroke when the air pressure in the cylinder reaches a predetermined value. The valve 20 includes a diaphragm 40 connected to a hollow stem 50 arranged to co-operate with a valve seat 54. In use, with a trigger-actuated ball valve 64 in the position shown, air from the reservoir 16 flows via a passage 48 and acts on the diaphragm so as to maintain it in contact with open top of the cylinder. Upon operating the trigger, the air flowing to the upper surface of the diaphragm is cut off thereby allowing the latter to be raised so that the air can act on the piston and thereby effect a working stroke. At the end of the stroke the piston abuts a rubber buffer 96 and when the air pressure acting on the sealing ring 92, via the ports 90, reaches a certain value, the air flow to the underside of the piston to raise it after the trigger is released. The piston is retained in its upper position by means of the sealing ring 86 engaging a shoulder 18d formed in the cylinder.
Patent GB-500662-A (GB)
Abstract: 500,662. Filters. GLENFIELD & KENNEDY Ltd., and PEEBLES, J. Nov. 3, 1937, No. 30064. [Class 46] An outward-flow rotary drum strainer comprises two rotary strainer drums mounted in axially-spaced relation on a common shaft, and each provided with a perforated end wall, the drums being arranged in a waterway or channel so that the strainer is not subjected to unbalanced end thrust from liquid entering the drums. In the construction shown in Figs. 1 and 3, two drums 1 are spaced apart on a horizontal shaft 2, one drum on each side of an inlet 3. The outer ends of the drums are perforated. Buckets 7 are provided within the drums to collect the separated solids and convey them to hoppers 8. The drums are driven by an electric motor the switch gear of which is controlled by fioats 11, 12, so that the drums are operated only on the attainment of a predetermined difference in level between the upstream and down stream. The drums are cleaned by means of oscillating jets of water 17. In a modification shown in Fig. 4, the perforated end walls 4 of the drums are adjacent to each other and to the outlet 6, the inlet 14 branching into two portions 13.
Patent GB-1534415-A (GB)
Title: Polymerization of styrene
IPC: C08F2/02
Filed: 1976-12-01
Abstract: 1534415 Production of polystyrene COSDEN TECHNOLOGY Inc 1 Dec 1976 [1 Dec 1975] 50126/76 Heading C3P A process for the production of polystyrene comprises contacting styrene with nitric oxide and subsequently polymerizing the styrene containing 1 to 10 p.p.m. by weight of the nitric oxide.. The contacting may be prior to, subsequent to or concurrent with distillation of the styrene. Bulk thermal polymerization of styrene is exemplified.
Patent GB-1132240-A (GB)
Title: Self-propelling paving machine
IPC: E01C19/48
Filed: 1965-11-26
Abstract: 1,132,240. Road making machines. A.B.G. WERKE G.m.b.H. 26 Nov., 1965 [26 Nov., 1964], No. 50360/65. Heading E1G. A paving machine has a vertically vibrated packing blade 9 and a vibrating beam 15 acting in a substantially horizontal plane. The blade 9 is oscillated by a variable throw eccentric 12 the shaft of which is adjustable for height by cam and lever means 13. A front plate 10 is angularly adjustable to suit the material to be packed. The vibrations of the packing blade and beam are relatively adjustable and powered by an hydraulic motor supplied from the main driving engine of the machine. The machine has a front hopper, with adjustable hinged sides, leading to two belt conveyers supplying a transverse feed screw. The blade and beam carrying frame is adjustable for height and camber and the beam may be heated.
Patent GB-1163117-A (GB)
Title: Improvements in or relating to Waistline Support Devices for Vehicle Seats.
Inventor: NYEMANN HARRIET
IPC: B60N2/66
Filed: 1965-11-30
Abstract: 1,163,117. Cushions. H. NYEMANN. 30 Nov., 1966 [30 Nov., 1965], No. 50693/65. Heading A4M. An elongated resilient body 6 for mounting on a vehicle seat back to afford lumbar support has a convex front face curved about a longitudinal axis and is provided with one or more straps 9 or elastic loops for securing the body to the seat. The body may be semi circular in cross section.