baber/WOPTO huggingface dataset:
Patent GB-1494015-A (GB)
Title: Thread forming screw and method of making same
IPC: B21H3/02
Filed: 1975-10-28
Abstract: 1494015 Thread-forming screws INDUSTRIAL FASTENERS CORP 28 Oct 1975 [14 Nov 1974 17 Sept 1975] 44378/75 Heading B3N A thread-forming screw is formed by rolling a thread on a blank, such as shown in Figs. 2, 5 and 9, having a plurality, e.g. seven, of flat sides at least on a transition portion 20, Fig. 2, so that flat areas are provided on the thread crest, Fig. 1, and adjacent flat areas intersect to form sharp longitudinal edges 9. In Fig. 1 also the groove root is of constant diameter and the edges 9 raised ends 8. The transition portion 20, Fig. 2 merges along inclined flat surfaces 30, 31... into the shank and the flat sides of the transition portion may be of different lengths so that the ends of the inclined flat surfaces define a broken right-hand, Fig. 5, or left-hand, Fig. 6 (not shown), spiral or are randomly arranged, Fig. 7 (not shown). The pilot end of the screw need not have flat sides and may be "conical", Fig. 9. The tapered screw end may be inclined at an angle of 5-13 degrees to the axis and the inclined flat surfaces 30, 31... may be inclined at a greater angle, e.g. 12 degrees.
Patent GB-1442358-A (GB)
Title: Door holder-closer
IPC: E05F3/22
Filed: 1973-09-24
Abstract: 1442358 Door closers EMHART CORP 24 Sept 1973 [28 Sept 1972] 44676/73 Heading E2M A door holder-closer 10 comprises a mounting bracket 69. for attachment to a frame or door and carrying a door closer 20 having a shaft 32, a spring urging rotation of the shaft in one direction, a damper controlling such rotation and arms 16 for connecting the shaft to the door or frame, and also carrying an electrically operated mechanism 28 for retaining a latching mechanism 26 in the position in which it retains a part of a one-way clutch 24, another part of which is coupled to the shaft so that rotation of the shaft is resisted in the said one direction and permitted in the opposite direction. When solenoid 96 is energised the latch is engaged and the one-way clutch allows the door to be opened but prevents the spring door closer 20 from closing the door until the solenoid is deenergised, e.g. in response to means detecting fire or smoke, and the latch released. The clutch 24 comprises an outer part 44, having a latching recess with sides 52 shaped to cam latch 94 out of the recess when it is released, coupled by balls 40 to a coaxial inner part 36 in a manner permitting relative rotation in one direction only, the inner part 36 being coupled to the shaft 32 through pads 54, of e.g. asbestos, between the part and plates 56 held against rotation on square end 34 of the shaft 32; thus the door can be pushed closed by overcoming the frictional force on the pads 54, which is adjustable by means of screw 62. Alternatively inner clutch part 36a may be non-rotatably engaged with shaft part 34a, Fig. 7, (not shown).
Patent GB-923245-A (GB)
Title: Improvements in drop wires for textile stop-motions
Inventor: SCROWCROFT HECTOR
IPC: D01H13/16
Filed: 1960-12-30
Abstract: 923,245. Drop-wire for stop motion. T.M.M. (RESEARCH) Ltd. Dec. 6, 1961 [Dec. 30, 1960], No. 44854/60. Addition to 860,249. Drawings to Specification. Class 120 (2). The feeler of the stop-motion of the parent Specification is of wire and has a thread-loop at one end and is coiled for part of its shank to form a spring which allows the feeler to flex without becoming disturbed. The spring section may be enclosed in a sheath of rubber or plastic material.
Patent GB-1484983-A (GB)
Title: Components of the supporting structure of electrical machines
IPC: F16M1/04
Filed: 1975-10-30
Abstract: 1484983 Dynamo-electric machines BBC BROWN BOVERI & CO Ltd 30 Oct 1975 [19 Nov 1974] 45009/75 Heading H2A The supporting structure of an electrical machine comprises coaxial inner and outer rings 5, 1 joined together by spokes 6, the spokes being tangent to an imaginary cylinder 8, Fig. 2, coaxial with the rings and located within the inner ring, the longitudinal axes of every two neighbouring spokes intersecting within the inner ring and each spoke being inflexible over its whole effective length in its longitudinal direction. The machine shown is a vertical axis machine, the inner ring 5 is a bearing housing and the outer ring 1 is a concrete supporting shell. The construction of the supporting structure permits relative angular movement of the shell 1 and bearing housing in response to stresses arising during operation. The lower bearing is radially supported by spokes 6<SP>1</SP> similar to epokes 6 and axially supported by a surface 18 of the concrete shell. In a modification, Figs. 3, 4 (both not shown), the concrete ring is replaced by a truss structure (1<SP>1</SP>) connected to the bearing housing (5<SP>11</SP>) by spokes (6<SP>11</SP>) which may be straight (Fig. 4) or curved (Fig. 5) and which are made up of several sections, the sections of adjacent spokes being interconnected by cross-braces (11).
Patent GB-1172149-A (GB)
Title: Improvements in or relating to Electrical Connecting Devices
Inventor: OLSON ANDREW HUGH
IPC: H01R25/14
Filed: 1967-10-04
Abstract: 1,172,149. Two-part couplings. COURT - NEY, POPE (ELECTRICAL) Ltd. 17 Sept., 1968 [4 Oct., 1967], No. 45229/67. Heading H2E. An adjustable electrical connecting means comprises an elongate member 1 of insulating material, e.g. plastics formed along each longitudinal edge with an open channel accommodating an electrical conductor and a coupling device 11, e.g. a socket having a movable cover 17 and contact making elements 21 of resilient strip form engageable in said member so that when the cover 17 is in the closed position the elements 21 are engaged by at least one projection 31 depending from the cover 17 and the extremities of the elements 22 are urged into engagement with the conductors and mechanically couple the device 11 to the member ]. As shown, the member 1 accommodates an earthing conductor strip 9 and conductors 6 and 7 provide the line and neutral connections. The two current-carrying contacts (15) of the socket 11, are each integral with a strip (20) having extensions 21 with serrated feet 22, Fig. 7 (not shown), said extensions constituting the contact-making elements. The socket is also provided with an earth contact (16) which co-operates with an earth contact-making element, viz. a cam (26) having a serrated edge (28) which digs into the earthing strip 9 when the cover is in position Fig. 4 (not shown). More than two channels may be provided in the member 1 so that a socket having 4, 5 or more contacts may be accommodated.
Patent GB-1341503-A (GB)
IPC: C21D8/04
Filed: 1971-09-29
Abstract: 1341503 Producing steel plates NIPPON KOKAN KK 29 Sept 1971 [15 March 1971] 45349/71 Heading B3A [Also in Division C7] A method of producing steel plates comprises continuously casting molten killed steel of composition: C < 0À10%; Si 0À03-0À10%; Mn < 0À20%; Soluble Al 0À0001-0À010%; B 0À003-0À010%; O 2  < 0À015%; balance of Fe and impurities to form slabs, hot rolling the slabs to form plate, pickling the plate, cold rolling the pickled plate, and annealing the cold-rolled steel plate. In an example a steel within the above composition range was hotrolled to 2À8 mm. thickness at a finishing temperature of 850‹ C. and a winding temperature of 560‹ C. After pickling, the plate was cold-rolled to 0À8 mm. thickness and then annealed in a holding furnace for three hours at 700‹ C., above the steel's recrystallization temperature. Increasing the finishing temperature from 850-870‹ C. and winding temperature to 580‹ C. resulted in an increase in the Lankford value r, Fig. 1 (not shown), of the steel where the soluble aluminium content is less than 0À008%.
Patent GB-1448610-A (GB)
Title: Semiconductor devices having refractory metal and silicon layers
IPC: H01L21/3205
Filed: 1974-10-22
Abstract: 1448610 Sputtering silicides RCA CORPORATION 22 Oct 1974 [1 Nov 1973] 45621/74 Heading C7F [Also in Division H1] In a method of depositing a refractory metal and silicon layer on a body of silicon, a target of the metal and silicon in the stoichiometric ratio of the silicide is sputtered to obtain a layer which also contains the metal and silicon in this ratio. The resistivity of the layer may be reduced by a subsequent annealing step. The target may be of the metal silicide and the metal is preferably tungsten but may alternatively be platinum, molybdenum, rhodium or rhenium. The deposited layer may be reacted with or penetrated into the silicon body by heating to 1200 C.
Patent GB-1515619-A (GB)
Title: Liquid chromatography pumping system with compensation means for liquid compressibility
IPC: F04B43/067
Filed: 1976-11-03
Abstract: 1515619 Liquid chromatography VARIAN ASSOCIATES INC 3 Nov 1976 [10 Nov 1975] 45642/76 Heading B1H In a liquid column chromatography system comprising at least one reservoir and cooperating positive displacement pump. A substantially constant flow in the presence of flow resistance changes is maintained by providing pressure control means in the flow path between the pump and the column. Said means may comprise an adjustable back pressure regulating valve or there may be separate pressure detecting means controlling an adjustable flow resistance. The system is particularly applicable to gradient elution.
Patent GB-1034797-A (GB)
Title: A guide for a sliding part
Inventor: REGENBRECHT LUDWIG
IPC: B25B1/24
Filed: 1963-02-04
Abstract: 1,034,797. Machine tool details. PAUL FERD PEDDINGHAUS. Feb. 4, 1963, No. 45850/62. Heading B3B. A guide for adjusting the clearance of a sliding part 4 of a vice or machine part, comprises a wedge-shaped part 10 having a continuous tapped hole 12 into which is screwed a tension screw 13 and a counter-tension screw 14. As shown, the rail 4 of the sliding jaw of a vice is U-shaped in cross-section, the two legs of the U having surfaces 7 which rest on associated surfaces of the base plate 2 which carries the fixed jaw 1 of the vice. The wedge-shaped part 10 has an oblique surface which co-operates with an oblique surface 9 on the rail 4 and a surface 11 which co-operates with a corresponding surface on the guide body of the jaw 1. The tension screw 13 is tightened towards the left until the oblique surface of the wedge rests against the oblique surface 9 of the rail 4, the counter-tension screw then being tightened towards the right to adjust the clearance between the rail 4 and the wedge 10.
Patent GB-1070576-A (GB)
Title: Magnetic amplifiers operative with d.c. electric sources
IPC: H02M7/515
Filed: 1963-11-20
Abstract: 1,070,576. Magnetic amplifiers; transistor amplifier and oscillator circuits. HITACHI Ltd. Nov. 20, 1963 [Nov. 24, 1962], No. 45899/63. Headings H3B and H3T. The output from a magnetic amplifier to a load is obtained from a D.C. power source. As shown in Fig. 1 a D.C. electrical source Eo is applied to output windings NL1, NL2<SP>1</SP> and NL2, NL1<SP>1</SP> through a load RL and a pair of silicon controlled rectifiers SCR1, SCR2 respectively, the output windings being mounted on two saturable cores m1, m2 together with control windings Nc connected to a D.C. control or input voltage source Ec. If rectifier SCR1 is conducting and SCR2 non-conducting current flows through windings NL1 and NL2<SP>1</SP> to the load RL and capacitor C is charged over circuit SCR1-C-NL2-NL1<SP>1</SP> until voltage Eo is applied across windings NL2 and NL1<SP>1</SP> so that voltages are induced in the windings in the direction shown by the arrows. The induced voltage in gate winding NG<SP>1</SP> causes capacitor C<SP>1</SP> to be charged through diode D1<SP>1</SP> and the gate cathode of rectifier SCR1 so keeping this rectifier conducting and the induced voltage in gate winding NG2 causes capacitor C2 to be charged over diode D2 and rectifier SCR2 to be maintained cut off. When core m 2  saturates capacitor C2 discharges through diode D2<SP>1</SP> and the gate cathode of rectifier SCR2 so as to render it conductive. Capacitor C is thus discharged through SCR1 and SCR2 resulting in SCR1 being. non-conducting. The cycle is repeated. The SCR's may be replaced by transistors. Each iron core may be provided with a feedback winding (N#), Fig. 5 (not shown). In order to start the circuit oscillating a switch may be connected in parallel with SCR1 or a parallel combination of a resistor and capacitor may be connected in parallel with the rectifier Fig. 6 (not shown).
Patent GB-1087847-A (GB)
Title: Improvements in or relating to collating and like machines and to sheet feeding devices therefor
IPC: B65H3/02
Filed: 1963-11-22
Abstract: 1,087,847. Feeding sheets. W. G. SIMPSON. Oct. 13, 1964 [Nov. 22, 1963], No. 46270/63. Heading B6B. A pusher member 11, 12 for frictionally separating a top sheet from a pile, e.g. in a collating machine as described in Specification 982,020, has a rubber thimble 23 with nodules thereon fitted over its operative end. A bolt 21 passing through the legs 11 of the pusher member has a ring 25 which jams the inner end of the thimble to secure it. The member 11, 12 may be balanced at its end remote from the thimble by a U-shaped member connecting the parts 12 thereof or by a tray containing weights and mounted between the parts 12.
Patent GB-1310855-A (GB)
Title: Mould forming apparatus
IPC: B22C11/00
Filed: 1971-10-05
Abstract: 1310855 Foundry moulding machines COMBUSTION ENG Inc 5 Oct 1971 [26 Feb 1971] 46370/71 Heading B3F Sand moulds for pouring after removal from the moulding flask are provided with shoulders to enable them to be gripped by mould conveying devices. A flask 26 provided with an internal shoulder 46 is mounted in a machine frame 11, 14, 16 to be vertically slidable on rods 28, 30. A lower pattern board 30 is slidably mounted within the flask 26 on piston and cylinders 38. A further piston and cylinder 50 function to move both the lower pattern board 30 and the flask 26 upwardly and downwardly. Sand is charged from a hopper 42 into the flask and an upper pattern board 24 moved by a piston and cylinder 20 above the flask. The piston and cylinder 50 raises the flask 26 and lower pattern board 30 to impress the upper pattern board 24 into the moulding sand. The lower pattern board 30 than slides within the flask 26 to compress the mould between the two pattern boards 24, 30. The mould is cured by the application of heat or CO 2  gas, the flask 26 and lower pattern board 30 lowered and the upper pattern board 24 retracted. To eject the mould, the lower pattern board 30 is raised and fingers 54 engage the shoulders of the mould.
Patent GB-1231889-A (GB)
IPC: B65D83/14
Filed: 1968-09-30
Abstract: 1,231,889. Spray producers. J. R. GEIGY S.A. 30 Sept., 1968 [9 Oct., 1967], No. 46276/ 68. Heading B2F. Aerosol dispensers in which the material to be dispensed and propellant gas liquified under pressure are accommodated in different containers are characterised in that the propellant container 5 contains a carrier 6 capable of adsorbing or absorbing the liquified propellant under pressure and releasing gaseous propellant at a rate adequate for dispersing the material. Specified carriers are absorbent cotton, felt, fibre mats, pumice stone, expanded vermiculite, porous minerals, cellular plastics, fossil or precipitated silica, metal silicates or hydrated light alumina. A grid 11 may be provided between the container and valve to prevent blocking of the ducts leading to the spray nozzle by carrier.
Patent GB-1061365-A (GB)
Title: Photographic objective
IPC: G02B9/34
Filed: 1965-11-02
Abstract: 1,061,365. Photographic objectives. EASTMAN KODAK CO. Nov. 2, 1965 [Nov. 2, 1964], No.46461/65. Heading G2J. The objective consists of four air spaced components:- 1, 2, positive meniscus singlets concave to the diaphragm 6, lens 1 having a dispersive index between 42 and 52, 3, a negative singlet, 6, the diaphragm, and 4, 5, a positive meniscus doublet concave to the diaphragm and consisting of a front negative element and a rear positive one. Optical data are provided for two examples in which the negative singlet 3 is also a meniscus concave to the diaphragm.
Patent GB-965577-A (GB)
Title: New steroid compounds and processes for their preparation
IPC: C07J41/00
Filed: 1960-07-29
Abstract: The invention comprises a 3-amino-oestra-3, 5(10), 9(11)-triene having the structural formula: <FORM:0965577/C1/1> wherein R is hydrogen or an acyl radical, and R1 and R2 are both alkyl radicals, which may be the same or different each having 1 to 6 carbon atoms or together with the nitrogen atom represent a substituted or unsubstituted nitrogen-containing or nitrogen and oxygen-containing heterocyclic ring and processes for the preparation thereof by subjecting a 17b -hydroxy or 17b -acyloxy-oestra-4, 9(10)-dien-3-one or a D 8-3-methyl-7-keto-8-(g -ketobutyl) -3,4-[31-hydroxy or 31-acyloxy-(21, 11)-cyclopentano]-octahydro naphthalene is subjected to the action of a secondary amine so as to obtain the corresponding 3-amino compound. As secondary amine there may be employed pyrrolidine.
Patent GB-1439349-A (GB)
Title: Material handling apparatus
IPC: B25J19/00
Filed: 1973-10-10
Abstract: 1439349 Manipulator ELECTROLUX AB 10 Oct 1973 [18 Oct 1972] 47297/73 Heading B8H Manipulator, for transferring workpieces between work stations, comprises a vertically movable and rotatable column 12 to which one or more clamps 13 are secured for mounting piston and cylinder assemblies 15 which carry grippers 25. The column comprises a hub 27 rotatably driven by a motor 33 between positions defined by adjustable stops 36 and mounting a plate 30. A piston and cylinder assembly 47 is mounted on the plate and by way of a yoke 50 carries a cylinder 52 which is vertically displaceable between stops 54 by the assembly 47 along guides 43 mounted on the hub. The clamps 13 are secured to the cylinder 52 and each has a head 14 securable to an assembly 15 whereby such assembly may be linearly and angularly displaced with respect to the column 12. The assembly 15 comprises a cylinder with a piston-rod 16 secured to a piston (67), Fig. 5 (not shown), and mounted eccentrically of the cylinder and the piston to prevent rotation of the piston-rod relative to the cylinder. Fluid to move the piston is supplied via conduits (74), (75) within the piston rod and adjustable stops 17 limit the displacement of the said piston rod. All of the stops have dampers associated therewith.
Patent GB-481424-A (GB)
Abstract: 481,424. Automatic circuit-breakers ; thermal switches. BULLEN, A. G. Sept. 11, 1936, No. 22638. [Class 38 (v)] In a thermal switch adapted to operate after a time interval determined by the time taken to heat up a mass of air or metal associated with the thermal element the thermal element is carried by a movable member which moves when the thermal element reaches a predetermined temperature and in turn releases a spring-actuated switch member. The invention is particularly applicable to water-heating apparatus. In the form shown in Fig. 2, the main circuit to a water heater is closed at a contact 9<1>, which is held pressed against its co-operating contact by a projection 11 on a lever 10 which is itself pressed to the right by a spring plunger 17 on a door 12 that is pivoted at 13 and held closed by a plunger 15 engaging a spring 16. The plunger 15 forms part of a fusibly-released device 14 such as described in Specification 406,333, and the whole switch is mounted in a compartment 3 of a switch bore which has another compartment 2 containing a lamp 5 controlled by a switch 6 in an auxiliary circuit. Assuming both circuits are closed, the heat from the lamp passes through the apertured partition 4 into the compartment 3 until the temperature of the latter melts the fusible material in the device 14 allowing the plunger 15 to move downwards and slip past the spring 16, the door 12 opening and the main circuit being broken at 9<1>. In the form shown in Fig. 4, eight bimetal strips 18b are mounted on eight metal bars 18a forming part of a rotary cage normally held against rotation by a catch 33 engaging a pin 32. Hot fluid in a fixed pipe 20 heats the metal bar 18a and bimetal strip 18b adjacent it until eventually the latch 33 is raised sufficiently to release the cage which then moves round under the influence of a spring 25, that has been strained by the raising of the catch 33, till it is stopped by the catch 33 engaging the next pin 32. The hot fluid pipe 20 is now immediately below the next bar 18a which becomes heated in its turn till after a further time interval the cage moves on another step. Eventually a pin 27 on the cage strikes a lever 28 and releases a spring-actuated switch member 29 to break a circuit.
Patent GB-1067848-A (GB)
Title: Valve for dispensing fluids
IPC: B67D1/14
Filed: 1963-12-06
Abstract: 1,067,848. Valves. SLOAN VALVE CO. Dec. 6, 1963 [Sept. 27, 1963], No. 48389/63. Addition to 1,054,055. Heading F2V. Improvement to the slow closing valve of Specification 1,054,055 is effected by maintaining atmospheric pressure in the dash-pot chamber 30 by means of an opening 53, through the cover 32, to a chamber 54 sealed therefrom by a thin flexible diaphragm 51; the dash-pot piston 34 additionally being provided with a sealing ring 50. The seating member 12 is also provided with an 0-ring 55 and the valve seating portion of the rubber sleeve member 10 is made in two sections; the nose portion 56 of a soft synthetic rubber moulded to a bushing 57 to which the member 10, of flexible, stiff material, is clamped by a washer 60 by threaded engagement of stem 13.
Patent GB-1395588-A (GB)
Title: Mechanism for relative adjustment of axially-spaced lens components of an optical system
IPC: G03B17/14
Filed: 1972-10-23
Abstract: 1395588 Zoom lenses H MITO 23 Oct 1972 [10 Nov 1971] 48802/72 Heading G2J An optical system comprising a focusing component 1, 5 and a zooming component 2, 6, both axially moveable, has an operating member 23 so coupled to both components that axial movement of the member 23 moves one of the components, e.g. 2,6 and rotary movement of the member 23 around the axis moves the other 1,5. The member 23 has a guide member 26 which engages an axial slot 31 in a focusing ring 30, so that rotation of the member 23 moves the parts 1, 5, 30 axially by the helicoid mechanism 33, 35. Guide members 22, likewise mounted on the member 23, engage an annular slot 21 in a slidable ring 20 which carries a pin 29 which engages a slot 19 in a cylinder 14, whereby axial movement of the member 23 and hence of ring 20 rotates the cylinder 14 inside the ring 20 and causes pins 17, 18 which engage slots 15, 16 in the cylinder 14 to move axially and take with them the component 2, 6 and a compensating lens component 3, 7. Slots (12) 13 in the fixed portion 11 of the system accomodate axial movement of the pins 17, 18, 29. In a second embodiment, Figs. 3, 4 (not shown), the ring 20 is dispensed with, and a guide member (122) engages an annular slot (121) in the cylinder (114). Focusing is performed as in Fig. 1, but zooming is carried out by axially moving the member (123), which causes the cylinder (114) to move axially and the zooming and compensating components (102, 106, 107) to rotate and move axially due to the engagement of pins (117, 118) on the components with slots (115, 139) and (116, 140) in the parts (114, 111). In a third embodiment, Fig. 5, in which the member 23 is not shown zooming is performed by axially moving a ring 220 which is connected by strips 243, 244 passing over pulleys 245, 246 on the fixed part 211 to a rotatable cylinder 214, e.g. at 249. Pins 217, 218 on the zooming and compensating components 206, 207 engage in slots 215, 216 in the cylinder 214, axial movement of the pins being accommodated by a slot 212 in the part 211. Rotation of the ring 220 is prevented by a pin 213 which engages a hole 229 in the ring. Focusing is by rotation of the member corresponding to 23, as in Fig. 1.