baber/WOPTO huggingface dataset:
Patent GB-365234-A (GB)
Title: Improvements in portable boring and drilling mechanism
IPC: B23B45/06
Filed: 1930-11-08
Abstract: 365,234. Drilling- machines. T H 0 MSON, W., Sunray Iron Works, Mill Hill, Bolton. Nov. 8, 1930, No. 33646. [Class 83 (iii).] In a drill-stand of the type comprising a bar, one end of which is clamped to the work whilst the other end supports a hand-operated drill, the parts of the stand are adjustably secured together by wedges. In one form, a bar 2, Fig. 1, of channel section carries clamping members 2b, 9 for securing to the work 8 by screws c and an arm 3 carrying another bar 4 which supports the feed-screw 7 of the drill. The member 9 and the arms &c. are secured by wedges 6 and the drill may be operated in either of the positions indicated in Fig. 1. The drill spindle, which is rotated by a handle 10, passes through the feed sleeve 7 and engages therewith through a ball thrust bearing 11. In an alternative construction the work 8, Fig. 3, is gripped between an arm 14 and a swivel jaw 16 on a screw 15 rotatable within an arm 13, the arms 13, 14 and the drill holder 3 being secured to the bar 2 by wedges 6. The lower end of the arm 14 is bifurcated to act as a guide for the drill 5. In a further form brackets 17, 17a, Fig. 7, are secured to the work 8 by screws c and to the bar 2 by wedges 6. The device may be adapted for operating on tramway rails as shown in Fig. 5.
Patent GB-175780-A (GB)
Title: Improvements relating to parachutes
IPC: B64D17/00
Filed: 1920-11-29
Abstract: 175,780. Calthrop, E. R. Nov. 29, 1920. Parachutes.-Greater lift is obtained by increasing the effective suction area of a parachute by directing outwards some of the air within its body near its periphery, and so extending the sweep of the air escaping from within the parachute. Apertures B for the escape of air may extend circumferentially and be covered by overlapping flaps, connected to the main portion by transverse webs, and reinforced by tapes. The apex of the parachute may comprise a cylindrical member C, having a slight outward flange c<1> and a dome-shaped cap with a cooperating flange, the two flanges being fixed in position by a zig-zag strip of stiff webbing arranged edgewise to the air escaping through the annular vent thus formed. The conical angle of the inverted cone of escaping air should be about 90‹. The apex may be strengthened by internal radial dividing walls and bv stays E which may pass over the cap. Specification 1077/15 is referred to.
Patent GB-807526-A (GB)
Title: Improvements in windscreen wiper actuator mechanisms
Inventor: SIMPSON WILLIAM EDWARD
IPC: B60S1/08
Filed: 1955-11-24
Abstract: 807,526. Windscreen wipers. GENERAL MOTORS Ltd. Nov. 12, 1956 [Nov. 24, 1955], No. 33725/55. Class 138(1). A windscreen wiper mechanism comprises an electric motor driving an actuator shaft and a switch having a first, fixed, contact and a second, moving contact, the latter being movable from a first to a second position of engagement with the first contact in which position it is actuated by a member carried by the actuator shaft to open the switch and stop the motor in a predetermined position of the actuator shaft. As shown, an actuator shaft 6 driven by an electric motor has a cam 11 fixed to its end. An insulated sheet 12, carrying a contact strip 15 having a fixed portion 14 and a resilient portion 16, separates the cam from a compartment housing a manually operated lever 20 which has three positions of engagement with the contact strip 15, one, as shown, engaging the resilient end of the strip resulting in a fast rate of wiping, a second giving a slow rate of wiping and a third in which a cam follower mounted on the lever 20 engages the cam 11 and, on running on to a high portion of the cam surface, separates the contacts and stops the motor. The cam is adjustable on the shaft 6 and may be set to stop the motor when the wiper blade is in the parked position, access for adjustment being obtained through a plugged aperture in a cover 27.
Patent GB-1211822-A (GB)
Title: Wood shearing machines
Inventor: CREMONA ANGELO
IPC: B27B/
Filed: 1969-07-04
Abstract: 1,211,822. Woodworking. A. CREMONA. 4 July, 1969 [28 Jan., 1969], No. 33970/69. Heading B5L. A wood shearing machine comprises a pressure bar and cutting blade assembly G slidably supported on a machine bed and adapted to be moved across a wood stock P to be sheared, and a pair of single acting hydraulic or pneumtic pressure cylinders C arranged one on each side of the machine and are pivotally secured at their lower ends 1 to the machine base and at their upper ends 2 to the assembly, the force exerted by the cylinders on the assembly being such as to increase the pressure of the assembly against the wood stock. The cylinders are single acting and supplied from a tank, and the force X that they exert at the end of the stroke of the assembly by a flywheel and connecting rod in addition to a component Z acting to press the assembly against the wood stock, has a component Y which dampens the inertia of the assembly.
Patent GB-842065-A (GB)
Title: Improvements in or relating to the control of hydraulic actuators
IPC: F15B11/08
Filed: 1958-10-23
Abstract: 842,065. Hydraulic appliances; valves. GRATZMULLER, J. L. Oct. 23, 1958 [Oct. 23, 1957], No. 34016/58. Classes 69 (2) and 135. An hydraulic control apparatus for selectively connecting an hydraulic actuator, such as a spring-loaded single-acting piston U, to a source of hydraulic pressure S or to exhaust 15 comprises an admission duct 1 connecting the source to the actuator and having a spring- closed admission valve CA unseatable by an hydraulic relay jack VA, an exhaust duct 12 containing an exhaust valve CP seatable by another hydraulic relay jack VP, with or without spring assistance, and a common feed and exhaust duct 3 for the working chambers of both relay jacks selectively connectible to a source of hydraulic pressure or to exhaust by a manually or electrically operated selector device 4. The construction is such that the pressure existing in the actuator acts on the exhaust valve CP in a sense to unseat it, but exerts a smaller effort thereon than the oposed effort of the exhaust relay jack VP when the latter is connected to its pressure source, that the hydraulic pressures acting on the admission valve CA when unseated by its jack are fully balanced so that the valve is subjected only to the efforts of its relay jack VA.and its spring 16, and that the pressure downstream of the admission valve acts on the admission relay jack in opposition to the pressure in that jack's working chamber and, when the admission valve is open but no flow is taking place through it, exerts an effort equal and opposite to that of the pressure in the working chamber so that the unseating effort exerted by the jack on the valve is nil and it seats under the action of the spring 16. Also included are restrictor means 19 which, when flow is taking place through the admission valve CA, causes the pressure downstream thereof to be less than when no flow is taking place by an amount sufficient to enable the admission relay jack VA to exert on the valve an unseating effort greater than the opposed effort of the valves spring means 16. A number of alternative sources of pressure supply 1a, 1b, 1c, 1d, Fig. 2, may be used and the exhaust branches 12a, 12b, 12c may be connected to three actuators arranged for simultaneous or selective operation. A means for ensuring that the hydraulic system is kept full of liquid comprises a duct 25, fed with liquid from the supply source, containing a flow restrictor 26 and a pressure-reducing device 30 connected by a passage 45 containing a non-return valve 28 to the duct 11. The pressure-reducing device comprises a lightly spring-loaded ball valve 27 operable by a reciprocable member 33 abutted by a spring- loaded, diaphragm-located, tubular member 35. In operation, a reduction of pressure in duct 11 causes the check valve 28 to open, which causes a reduction of pressure in chamber 34 which in turn opens valve 27 to restore the pressure. The tubular member 35, which leads to exhaust, acts as a pressure relief valve for chamber 34.
Patent GB-1237282-A (GB)
Title: Improvements in or relating to power steering systems
Inventor: BISHOP ARTHUR ERNEST
IPC: B62D5/30
Filed: 1968-07-17
Abstract: 1,237,282. Power-assisted steering mechanism. A. E. BISHOP. 17 July, 1968 [18 July, 1967], No. 34044/68. Heading B7H. In power-assisted steering mechanism comprising an hydraulic steering motor controlled by an open-centre steering valve 21 supplied by an engine-driven fluid pump 15, an hydraulic accumulator 41 is connected to the steering valve 21 through a normally closed ball valve 40, and displacement of the steering valve 21 beyond a predetermined range open the ball valve 40 so that pressure fluid stored in the accumulator 41 is available for direction to the steering motor through the steering valve. The accumulator 41 is charged by the pump 15 through a charging valve 50 having a spool 51 urged by a spring 55 into a position wherein a portion of the pump output is directed through a restricted passage 61 to the accumulator. When the accumulator 41 is fully charged or if the steering valve 21 is actuated increased pressure in a chamber 59 or 57 respectively displaces the spool 51 against the force of the spring to direct all the fluid delivered by the pump 15 to the steering valve. The steering valve 21 is connected by a universal coupling 22 to a steering shaft 9 and rotates within a valve sleeve 19 connected to an hourglass worm 12 coupled to the steering shaft through a torsion bar spring 25. Axial grooves in the valve 21 co-operate with channels in the sleeve 19 so that initial rotation of the valve relative to the sleeve directs fluid from the pump 15 to the steering motor. If the total pump output fails to provide the desired steering performance, further rotation of the valve 21 relative to the sleeve 19 unseats the ball valve 40 so that fluid from the accumulator 41 augments that from the pump 15. A check valve 46 prevents reverse flow from the accumulator 41 to the pump 15. In another embodiment, Figs. 10, 11 (not shown), the whole pump output is used to charge the accumulator whenever the engine of the vehicle is started. A warning light indicates that charging is taking place, and another warning light indicates when recharging is necessary. In a further embodiment, Figs. 8, 9 (not shown), a low pressure pump which may be the engine lubricating oil pump satisfies steering requirements during normal driving, and an accumulator charged by a separate high pressure pump supplies additional fluid during periods of heavy demand such as parking manoeuvres.
Patent GB-924342-A (GB)
Title: A dividing apparatus
IPC: G01D5/22
Filed: 1961-09-22
Abstract: 924,342. Measuring electrically. V. L. GABINOV, G. M. BRODSKY, J. V. KHOKHLOV, and S. S. PODLAZOV. Sept. 22, 1961, No. 34068/61. Class 40 (1). [Also in Group XX] In a dividing apparatus for accurately positioning a shaft 1 angularly the shaft carries four sets of teeth 9 which co-operate with four sets in a rotatable stator 13. The stator carries two energizing coils 16 the magnetic flux from which passes through two sets of teeth on the stator and two on the rotor. The stator teeth are displaced from each other by half a tooth. Two sets of coils can be incorporated in a bridge circuit and the current through them balanced. In operation shaft 1 is set in a null position where the impedances of the two coils are equal. The desired angular position is set in by means of a micrometer screw 27 which through a wedge 29 and flexible link 34 rotates the stator. This unbalances the coils and balance is restored by rotating the shaft by a worm mechanism 12. Since there are twice as many null positions as teeth half these are eliminated by a camoperated contact 20. The shaft may be locked by a brake 22.
Patent GB-647277-A (GB)
Title: Refuse collecting vehicle
IPC: B65F3/12
Filed: 1947-12-23
Abstract: 647,277. Loading refuse vehicles. OCHSNER & CIE. AKT.-GES., J. Dec. 23, 1947, No. 34079. Convention date, Dec. 8, 1942. [Class 78 (iv)] The refuse collecting vehicle shown comprises a filling opening 4 adapted to be closed by a cover 3 and suspension members 11 for a refuse pail 8 of which the cover 2 is automatically coupled with the cover 3 when the pail is placed on the suspension means 11. The cover 2 has a slot adapted to engage a coupling member 1 guided by spindles 6, 12 to slide in grooves 13 in the cover 3. The spindle 6 is normally held in recesses 6 so that as the pail is raised about the suspension 11 the sliding cover 3 and the hinged cover 2 move together. When, however, the cover 3 is fully opened an abutment 5 raises the spindle 6 so that both spindles 6 and 12 may slide in the grooves 13, and the cover 3 is not opened any further.
Patent GB-329261-A (GB)
IPC: F01D5/30
Filed: 1929-11-08
Abstract: 329,261. Akt.-Ges. Brown, Boveri, et Cie. Nov. 30, 1928, [Convention date]. Rotors.- In order to obtain a constant flow of heat through a turbine disc a, the rim is provided with hollow spaces f between the blades. The spaces may be shrouded by members g arranged between the blades, or by extensions h on the blades.
Patent GB-176476-A (GB)
Title: Improvements in and relating to the manufacture of carbon
IPC: C01B32/336
Filed: 1920-12-02
Abstract: 176,476. British Thomson - Houston Co., Ltd., (General Electric Co.) Dec. 2, 1920. Grant of Patent refused. Inhalers and respirators. - Carbonaceous materials are distilled in a retort and, after at least two hours, steam or other oxidizing gas is injected. The resultant carbon may be used in gas-masks or in the administration of anµsthetics.
Patent GB-900592-A (GB)
Title: Pit prop
IPC: E21D15/15
Filed: 1958-10-24
Abstract: 900,592. Telescopic pit props. HEESE, H. Oct. 24, 1958 [Oct. 24, 1957], No. 34136/58. Class 20 (2). In a pit-prop comprising three telescopic members 1, 8, 30 the members 1, 8 have a buffer spring 3 disposed therebetween and the members 8, 30 are clamped together by a clamp 32 which has limbs accommodating a wedge 35 adapted to act on a pressuremember 34 displaceable in a limited direction parallel to the axis of the prop. The member 34 is pressure-loaded by a spring 39 and its degree of axial movement is controlled by the depth of a recess 42 in a cover 40 bolted to the clamp 32. The members 32, 34 are provided with aluminiurn friction linings 43, 44 and the member 30 with a rubber buffer 45. Loading of the spring 3 is effected by a wedge 11 which is driven in before the prop is erected.
Patent GB-760407-A (GB)
Title: Improvements relating to apparatus for removing single sheets of paper and the like from a pile of sheets
IPC: B65H3/40
Filed: 1953-12-08
Abstract: 760,407. Feeding sheets. STOLZ, A. Dec. 8, 1953 [Dec. 8, 1952], No. 34164/53. Class 100(1) Sheet-separators.-Sheets are separated from a pile by two systems of suction separators 1, 2 which act alternately, one swinging beneath the other, to separate the sheets in overlapping relationship, and each system has upwardly and downwardly directed suckers. The system 1 has an end bar at one side of the pile which supports two suction rods 11, 12 disposed across the pile on which are suckers 15, 17, respectively. The system 2 has an end bar disposed at the other side of the pile which supports two similar rods 13, 14 having suckers 16, 18 thereon. The end bars are actuated vertically and horizontally to perform swinging motions, by cams acting through a system of levers. Considering sheet B3, this was lifted from the pile by suckers 15 of system 1; then system 2 swung under system 1, sepparated a sheet B2 from the pile, and moved upwardly so that its top suckers 18 took over the sheet B3 from the suckers 15. The top suckers of one system thus take over sheets which are separted from the pile by the bottom suckers of the other system, and feed the sheets to a conveyer 19, or to a swinging or cylinder gripper system in a printing or other machine. Air is blown from the front between the sheets, and the trailing edges of the sheets transferred to the conveyer 19 are supported by a current of air. Reference has been directed by the Comptroller to Specification 612,048.
Patent GB-1535986-A (GB)
Title: Optical element having a replicated surface and manufacturing method therefor
IPC: B29C33/60
Filed: 1976-08-17
Abstract: 1535986 Preparation of replicated optical surfaces OLYMPUS OPTICAL CO Ltd 17 Aug 1976 [22 Aug 1975] 34277/76 Heading C3P A layer of transparent photopolymerizable material (10) is formed on a base (3), a layer of silver as release agent (2) is applied with an optical mould (1), the assembly is irradiated with light to set the material and the mould is detached from the release agent. The silver can be removed from the object by treatment with nitric acid.
Patent GB-816664-A (GB)
Title: Improvements in or relating to amplifying circuits
IPC: H03F5/00
Filed: 1956-11-09
Abstract: 816,664. Amplifying circuits. PHILIPS ELECTRICAL INDUSTRIES Ltd. Nov. 9, 1956 [Nov. 14, 1955], No. 34315/56. Class 40 (6). The anode of an amplifier valve is connected to the positive terminal of supply through a transistor, the collector of the transistor being connected to the anode, the emitter through a resistance to the positive terminal of the supply and the base through a low resistance to the supply. The transistor acts as a low resistance for D.C., but a high impedance for A.C., the value of the latter being increased by the presence of the emitter resistor. In the circuit shown, the anode of the amplifier valve is connected to the grid of a cathode follower valve 12 which supplies the screen grid voltage for the amplifier valve through a decoupling circuit and negative feedback, through resistor 24, to the input of the amplifier. In an alternative circuit in which the negative feedback is omitted (Fig. 3, not shown), the screen grid voltage for the amplifier valve is obtained from a tap on the cathode resistor of valve 12 and the decoupling is effected by a capacitor connected across this resistor. In this embodiment the output is taken from the anode of valve 12.
Patent GB-505680-A (GB)
Title: Improvements in or relating to coin controlled apparatus
IPC: G07F5/10
Filed: 1937-12-11
Abstract: 505,680. Coin-freed apparatus. BRECKNELL, MUNRO, & ROGERS (1928), Ltd., and DOLMAN, H. J. Dec. 11, 1937, No. 34346. [Class 27] In coin-freed apparatus in which a coin in passing to the coin-controlled mechanism rolls along a counterbalanced rail and deflects the rail to cause an obturator to prevent a second coin from passing to the rail while the first is in it, the rail 5, Figs. 1 and 3, is carried by arms 4 pivoted at 3 and counterbalanced by a weight 8, the rail having a contact 15 which, when it is depressed by a coin, engages a contact 16 to energize an electromagnet 14. A pin 13 constituting the core of the magnet 14 is projected across the entry shoot 9 for the coins and holds back a second coin until the first has passed off the rail 5. The coins pass from the rail 5 to a pivoted bucket 12 which is depressed by two coins to close contacts 17, 18 and thereby effects the operation of the machine to deliver an article. In a modification, the obturator 13, Fig. 8, is formed by an arm 28 secured to the rotary pivot rod 3 of the rail. When the rail is depressed, the obturator 13 deflects a succeeding coin to an alternative path provided by a byepass 29. In a further modification, Fig. 5, the rail 5 is pivoted at its forward end 22 and each coin actuates a lever 23 to close contacts 17, 18. In a further form, the rail is mounted in the same way as a parallel ruler by being pivoted to the ends of parallel pivoted rods.
Patent GB-909993-A (GB)
Title: Improvements in bourdon tubes and the like resilient pressure responsive tubular elements
Inventor: JACKSON LOFTUS
IPC: G01L7/04
Filed: 1958-10-27
Abstract: 909,993. Temperature-responsive actuating elements. JACKSON (INSTRUMENTS) Ltd., JOHN. Oct. 27, 1959 [Oct. 27, 1958], No, 34351/58. Class 64 (2). [Also in Groups XIX. XX and XXII] A Bourdon tube used in an instrument for measuring or controlling temperatures or pressures is formed to a substantially I crosssection of which the edges 14 are tubular, and a filling thread 16 is inserted along each tubular edge. The threads may be of wire or of a synthetic resin such as nylon. The threads may also be circular or pear-shaped in section and the Bourdon tube may be bent into an arc of a circle or coiled helically. Various other cross-sections for the tube are also described. A similar filling thread may also be provided centrally in the tube. This ensures that the Bourdon tube is not flattened excessively during its production.
Patent GB-964357-A (GB)
Title: Holding device for scraper blades of roller mills
IPC: B02C4/40
Filed: 1961-09-26
Abstract: 964,357. Roller mills. G. BUHLER. Sept. 26, 1961 [Sept. 27, 1960], No. 34498/61. Heading B2A. The scraper blade 2 of a roller mill is held in its holder 3 between a magnet 10 and magnetizable element 8 or, if the blade is of magnetic material, by the attractive force of the magnet. As shown in Fig. 2, the blade 2 is held in a clearance slot between magnetizable elements 4, 8 which are clamped together by magnets 10 but removable by inserting a tool in a recess provided in either of the elements 4, 8. In a modification, the magnets 10 are recessed in the element 4 while the blade 2 extends down between the magnets and element 8. In the further modification shown in Figs. 9 and 10 in which the blade is made of magnetic material, the shoulder portion of the blade 2 is disposed in a recess 26 of the longitudinally-extending magnetizable bar 4 which at each end is associated with a magnetizable element 28 constituting a housing for a magnet 10. An auxiliary blade 31 for cleaning each end of the roll is magnetically clamped between the blade 2 and the adjacent magnet 10.
Patent GB-448125-A (GB)
Title: Improvements in or relating to the production of silicic acid gels
IPC: C01B33/157
Filed: 1934-11-30
Abstract: A porous silica gel, suitable for use as a catalyst or catalyst carrier in the formation of olefines from alcohols or the condensation of alcohols with ammonia, is obtained by preparing a silicic acid hydrogel, thoroughly distributing a finely divided alkaline earth metal carbonate throughout the body of the hydrogel, forming the wet mass, e.g. by extrusion, into individual particles, drying the particles and extracting the alkaline earth metal carbonate therefrom by means of an acid.  The resulting gels may be used either alone or when impregnated with aluminium or other oxide.ALSO:A porous silica gel, suitable in particular for use as a catalyst or catalyst carrier, is obtained by preparing a silicic acid hydrogel, thoroughly distributing a finely divided alkaline earth metal carbonate throughout the body of the hydrogel, forming the wet mass, e.g. by extrusion, into individual particles, drying the particles and extracting the alkaline earth metal carbonate therefrom by means of an acid.  After treatment with acid the particles may be washed with water and dried.  Barium, strontium, calcium or magnesium carbonate may be employed and hydrochloric acid is a suitable acid. The hydrogel may be obtained by the reaction of sodium silicate solution with hydrochloric acid at 20 DEG  C., the resulting hydrosol having a pH of 6,8 to 7,6.  The resulting gels may be used as carriers for vanadium or platinum compounds for the conversion of sulphur dioxide into sulphur trioxide; the conversion of burner gases at 430--440 DEG  C. is referred to.  The gels may also be used either alone or when impregnated with aluminium or other oxides in dehydration or condensation reactions, such as the formation of olefines from alcohols or the condensation of alcohols with ammonia or amines.