baber/WOPTO huggingface dataset:
Patent GB-1365637-A (GB)
Title: Powder spraying apparatus
IPC: B05B14/48
Filed: 1972-06-29
Abstract: 1365637 Spray booths A RAMELLINI 29 June 1972 [29 Oct 1971 21 Feb 1972] 30415/72 Heading B2L  Powder coating apparatus comprises a spray booth 1 having an, opening 2 through which powder may be sprayed by an air/electrostatic gun a pair of filters 7 at each end of the booth each filter having a duct 17 with suction fan 16 to draw air through the filter from the booth the ducts connecting together. In use  when one suction fan is stopped, air from the other duct passes down the duct with the stopped fan to increase the pressure in the filter unit 7 and remove trapped particles therefrom. The particles pass through a hole 10 in the base of the booth to collectors 12 and from there pass via a pipe 13 back to the spray gun. Holes 8 are provided in the end walls of the booth for articles to pass through and a steam spray system 22-24 is provided.
Patent GB-1047156-A (GB)
Title: Radio frequency signal generator for a moving object detection system
IPC: G01S1/02
Filed: 1964-08-04
Abstract: 1,047,156. Circuit assemblies. PINKERTON ELECTRO - SECURITY CORPORATION. Aug. 4, 1964 [July 26, 1963], No. 30477/64. Heading H1R. [Also in Division H4] In a R.F. signal generator for a radar system (see Division H4), a double triode oscillator valve 20, Fig. 3, is mounted on an insulating board 48 together with a U-shaped inductor 26 which, with a variable capacitor 28, forms the tuned-anode tank circuit of the oscillator (Fig. 2, not shown, depicts the circuit) and a second U-shaped inductor 36 coupled to inductor 26 is mounted parallel thereto on a second insulating board 50, which is fixed parallel to board 48 and normal to a shielding chassis base 52, the valve 20 and the inductors 26, 36 being maintained in their mutually spaced locations by a rigid insulating member 56 which receives the tip 58 of the valve envelope in a hole therein, and which has passages through which inductors 26, 36 pass. The timed-grid tank circuit of the oscillator comprises a centre-tapped inductor 24 and the interelectrode capacitance of valve 20, for which 22 is the grid resistor. The anode H.T. for valve 20 is applied via a decoupling circuit comprising a R.F. choke 32 and a shunt capacitor (not shown) to a conductive lug 54 on board 50, the centre-point of inductor 26 being soldered to lug 54. The induced signal in inductor 36 is passed via a capacitor 60 and a porcelain feed-through insulator 64 to an aerial (not shown), the load on the aerial being variable by adjustment of a variable capacitor 62 which is mounted on a side wall 46 of the chassis and is accessible through a hole in the chassis-cover (not shown). Detection of an object produces modulations of the radiated signal which are detected by a crystal diode 6 and passed via a filter comprising a capacitor 74 and a choke 76, and a feed-through capacitor (not shown) in side wall 44 of the chassis, to an amplifying and indicating network (Fig. 2a, not shown).
Patent GB-1475400-A (GB)
Title: Combined lifting and cutting device for unhardened cellular concrete bodies
Inventor: GORANSSON R E
IPC: B26D1/547
Filed: 1974-07-10
Abstract: 1475400 Cutting and lifting concrete SIPOREX-FRANCAIS SARL 10 July 1974 [11 July 1973] 30528/74 Heading B5A [Also in Division B8] A moulded, cellular concrete block 7 (Fig. 5) is lifted whilst still plastic from its moulding platform 6 by a pair of jaws 13, cut into sections while supported from below by elements 27, and then transferred to a conveyer belt. The cutting and lifting device comprises a rectangular frame 10 (Fig. 2) supporting a pair of arched girders 12 and a pair of clamping jaws 13. The operative faces of the jaws are divided vertically into a plurality of foam rubber covered projections 15, and are movable horizontally by jacks 18 (Fig. 5), while guided by wheels 17 engaging the girders 12. Two opposing sets of fingers 27 are supported as cantilevers on supports 25 and rigid end pieces 28 (Fig. 8) and are movable towards one another with wheels 30 running along the end members 11 of the frame 10. The end pieces 28 support bifurcated heads 32 engageable (to the right of Fig. 8) with the piston rods of jacks 33 for vertical movement. A cutting frame 22 (Fig. 2) is driven by a screw along a shaft 19, and supports vertical steel cutting wires 23 (Fig. 7) that normally are seated in the gaps between the jaw projections 15; the frame 22 is guided by wheels engaging the girders 12. Operations.-A moulded cellular concrete block 7 is positioned beneath the cutting and lifting device by a wheeled carriage 6. The device is lowered with the jaws 13 and fingers 27 spaced widely apart. The jaws 13 are moved towards one another to firmly grasp the block 7, and the device and block raised (Fig. 5) by a crane and pulleys. The sets of fingers 27 are moved towards one another on the wheels 30 (Fig. 8) and then raised by the jacks 33 to take the weight of the block 7 while the pressure of the jaws 13 is released although they still contact the block. The cutting frame 22 (Fig. 7) is moved to cut the block into sections in a single traverse, the pressure of the jaws 13 is increased again, the fingers 27 returned to their initial positions, and the cut block 7 moved by the crane and pulleys on to a conveyer.
Patent GB-843549-A (GB)
Title: Improvements in or relating to torque converters
Inventor: BERTIN JEAN HENRI
IPC: F16H29/04
Filed: 1956-10-08
Abstract: 843,549. Ratchet gearing. SOC. BERTIN & CIE. Oct. 8, 1956 [Oct. 8, 1955 (2); Sept. 14, 1956], No. 30599/56. Class 80 (2). A variable speed ratchet gear comprises a mechanism for converting rotary input motion to reciprocating motion, the stroke of the latter being variable between zero and a maximum value, and a transmission including a freewheel device and an elastic torsion bar between the reciprocating member and the output member. In one embodiment, Figs. 4 and 5, the input shaft 21 carries a crank-pin 23 which imparts a reciprocating motion to cranks 24 fixed to the ends of a series of torsion bars 28, the other ends of which are connected by freewheels to gears 29 meshing with a gear 33 on the output shaft 34. The crank-pin 23 is mounted on a piston 41 and is thus radially movable by a fluid servomotor comprising a valve 44 according to the adjustment of a control ring 50 surrounding the input shaft. In a second embodiment, Figs. 6 and 7, the variable throw crank-pin 203 driven from the input shaft 201a is positioned by the action of a centrifugal weight 211 acting against a spring 206, rapid fluctuation of which are damped by a dashpot device 209. Additional manual control may be provided by an hydraulic jack 219 to reduce the eccentricity of the crank-pin. The crank-pin 203 drives by a link 212 the cage of two free-wheels 213, 226 which are of opposite hand and may be moved axially by an hydraulic jack 228 to provide forward or reverse motion to a torsion bar 223, acting as, or connected to the output shaft. Torque limitation may be obtained by the use of a slipping friction clutch 222 between the torsion bar and the output shaft, and braking of the shaft may be by eddy current brake 233.
Patent GB-973241-A (GB)
Title: Improvements in or relating to roof structures
IPC: E04D3/28
Filed: 1959-09-08
Abstract: 973,241. Roof structure; glazing. W. HAMILTON. Dec. 8, 1960 [Sept. 8, 1959], No. 30667/59. Headings E1R and E1V. A roof structure comprises at least two roofing units, each comprising upper and lower corrugated sheets 11, 12 (Fig. 1) rigidly connected in spaced relationship, the units being spaced apart laterally and connected by at least one panel, e.g. a corrugated sheet 31 or a transparent sheet 60 (Fig. 4) extending between the upper sheets 11. There may be a corrugated sheet 31 with a second similar panel 41 mounted below it to extend between the two lower corrugated sheets 12 of the two roofing units. Below the sheets 11, 12, 31 and 41 are transverse members such as 32 (Fig. 2) suspended from the flanges 29 of connecting members 22 by bearers 33. The members 22, spacing members 23 and tubular struts 21 form side panels with stringers 18 and 19 to connect the sheets 11, 12 and so give a box-like structure. Ceiling panels 44 are suspended from the members 14, 42 by members 45 inserted into slots 51 therein and members 46 in which the panels are mounted. When transparent sheets 60 (Fig. 4) are used, they are connected side-by-side, and are of similar dimensions to the sheet 31, comprising two sheets 62 and being connected to adjacent panels by transverse members 64 of channel section which collect and drain off any water that has penetrated. To connect a panel 60 to an adjacent roofing unit each member 64 is suspended from a flange 29 (Fig. 6) of a connecting member 22 of the unit by a member 81 having a web 83 with jaws 84 and 85, receiving the flange 29 and web 65 of a member 64. A masking panel 86 is retained by a member 87 suspended from the lower sheet 62 of a panel 61 and is dropped into a channel member 91 on the edge of a panel 44. A member 94 is mounted along the edge of the upper sheet 62 having a web 95, flanges 96 and 97 and an upstanding part 98. The flange 97 receives a block 101 secured to the top sheet 62. A wedge 102 is driven between the flange 96 and this sheet 62 until a key 103 on the flange 96 engages a key-way in the wedge 102 to hold the panel 60 thereat.
Patent GB-1249641-A (GB)
Title: Coloration process
Inventor: BERRIE ALISTAIR HOWARD
IPC: D06P3/36
Filed: 1968-06-27
Abstract: 1,249,641. Dyeing synthetic textile materials. IMPERIAL CHEMICAL INDUSTRIES Ltd. 4 June, 1969 [27 June, 1968], No. 30759/ 68. Heading D1B. Synthetic textile materials e.g. cellulose acetate, polyamides and polyesters are dyed padded or printed with an aqueous dispersion of a dye of formula I: in which A is an optionally substituted aryl radical, n is 0 or 1, Z is an optionally substituted alkyl or aryl radical, X and Y are each independantly hydrogen or an optionally substituted alkyl or aryl radical or a -CN, -COOR, -COR, or -CONR<SP>1</SP>R<SP>2</SP> radical in which R is an optionally substituted alkyl or aryl radical, R<SP>1</SP> and R<SP>2</SP> each independantly represent hydrogen or an optionally substituted alkyl or aryl radical or R<SP>1</SP> and R<SP>2</SP> together form a 5- or 6-membered heterocyclic ring with the nitrogen atom, there being no carboxylic or sulphonic acid groups present. Violet, red, yellow and green shades are obtained using conventional dyeing and printing methods.
Patent GB-879173-A (GB)
Title: Improvements relating to unloading valves for air compressors
Inventor: MARGETTS HUGH GRENVILLE
IPC: F16K31/56
Filed: 1958-09-26
Abstract: 879,173. Valves. HYMATIC ENGINEERING CO. Ltd. Sept. 28, 1959 [Sept. 26, 1958], No. 30784/58. Class 135. An unloading valve for air compressors comprises a first passageway 12 for connecting to a receiver for the normal delivery of air from the compressor to the receiver through a spring- loaded valve 41, a second passageway bypassing the first passageway whereby the air delivered from the compressor may be vented to atmosphere to unload the compressor, a one-way vent valve 22 in the second passageway adapted to be opened or closed upon a critical increase or decrease respectively of pressure in the receiver and in the first passageway, a diaphragm 5 responsive to said pressure in the first passageway, and means 26, 27, 28 for transmitting the movement of the diaphragm to operate the vent valve in the second passageway in which the transmitting means is under the control of a Bellville washer whereby the vent valve is opened or closed with a snapaction. The outer edge of the Bellville washer 33 is located in a groove 32 formed by two plates 3, 4 clamped together between a flange 42 of the valve body 1 and a cover-plate 2, the inner edge being located on a member 26; the latter member rests on the diaphragm 5, preferably of reinforced rubber, clamped between the plates 2, 4. The member 26 is provided with a spindle 27 the free end of which co-operates with the ball valve 22 normally seating on a seat 23 formed in an adjustable screwed sleeve 13. In operation, air passes from the compressor through an inlet 11, ports 36, 37, one-way valve 41, groove 40 and outlet 12 to an air receiver; when pressure builds up in the receiver above a limit determined by the setting of the spring 29 the air acts upon the diaphragm 5 and thereby, via the spindle 27, lifts the ball valve 22 off its seat, the Bellville washer snapping it to the open position. The incoming air from the compressor then passes to atmosphere through port 18 and the open sides 10 of the valve body, the openings being normally closed by a rubber sleeve 35. The setting of spring 29 and the position of the seat 23 may be adjusted by rolling back the sleeve and rotating a knurled adjusting collar 31 and a flange 20 respectively, the grip of the rubber sleeve normally preventing rotation.. The rate of the spring may be changed and the diaphragm may be replaced by a suitable piston and seal.
Patent GB-425675-A (GB)
Title: Improvements in stop devices in apparatus for machining gear wheels
IPC: B23F23/00
Filed: 1934-10-26
Abstract: 425,675. Grinding gear-teeth. MAAG ZAHNRADER UND - MASCHINEN AKT.- GES., 219, Hardstrasse, Zurich, Switzerland. Oct. 26, 1934, No. 30809. Convention date, Oct. 28, 1933. [Class 60] [See also Groups XXII and XXIV] In a device for automatically stopping a gear cutting or grinding machine after the required number of teeth have been cut the ratchet wheel 4 which is rotated by a pawl 3 through one tooth for each completed tooth of the work piece may for cutting large wheels, be rotated through more than a complete revolution before the stop mechanism becomes operative. The ratchet wheel is rotatable on a stationary threaded sleeve 6, reverse rotation being prevented by a pawl 5. A spindle 7 screwing into the sleeve 6 carries a crank 8 with a slidable stop pawl 9 which may be engaged with any tooth of the ratchet wheel 4. When the work is completed the pawl 9 engages a lever arm 15 to actuate the mechanism, (not shown), which stops the machine. For resetting the device the pawls 3 and 5 are lifted by hand, whereupon a spiral spring 11 returns the ratchet wheel to its starting position until a stop pin 17 on the wheel engages a stop 18 screwing at 19 into the ratchet wheel. The ratchet wheel has preferably 100 teeth and to cut a wheel having 275 teeth the pawl 9 is disengaged, the crank arm 8 turned through 2¥ revolutions (corresponding to 275 teeth) and the pawl 9 inserted in the 75 space of the ratchet wheel. This rotation of the crank arm screws the spindle 7 outwards and withdraws the operative edge 20 of the pawl 9 from the plane of the arm 15, so that on its first two revolutions the pawl 9 will freely pass the arm 15 but when a further 75 teeth have been cut the pawl 9 will engage the arm to stop the machine. During rotation of the ratchet wheel the stop 18 is similarly screwed back so that the pin 17 can pass it but when the parts are re-set by lifting the pawl the stop 18 is returned to its original position Fig. 1 where it is engaged by the pin 17 when the ratchet wheel reaches its original position.
Patent GB-750499-A (GB)
Title: Improvements relating to switch assemblies
Inventor: GOUGH ERNEST
IPC: H01H3/46
Filed: 1952-12-05
Abstract: 750,499. Hinges. WALSALL CONDUITS, Ltd. Dec. 2, 1953 [Dec. 5, 1952], No. 30866/52. Class 65 (2). A lever 10 forming part of the mechanism of an electric switch is pivoted to a cover-plate 13, which has to undergo a plating or other finishing process, by a pivot pin 14 fixed in the cover-plate before treatment of the latter, the lever being provided with an open slot in one end or side to engage the pin, and the slot being closed after assembly. In the form shown, the slot 19 is formed in the end of the lever 10 and the jaws 18 are closed round the pin 14 as shown to prevent disengagement ; the pin is headed and provided with a washer under the head, and is riveted in the plate 13. Specification 750,497, [Group XXXVI], is referred to.
Patent GB-1302005-A (GB)
IPC: F16J15/06
Filed: 1971-07-01
Abstract: 1302005 Valves CRANE CO 1 July 1971 [17 Aug 1970] 30878/71 Heading F2V In a phased closure, check valve a main valve member 12, which is carried by ribs 14, 16 integral with shafts 22, 23 guided by bearings 8, 10 on ribs 4, 6, is on reverse flow, first moved against fixed seat 28 to throttle the flow and then secondary valve member 30, which is guided on extension 34 of shaft 22 and is biased to open position by spring 36, is moved against seat 29 on the main valve member 12 to completely shut-off reverse flow.
Patent GB-1504288-A (GB)
Title: Manufacture of knitted briefs
IPC: D04B1/24
Filed: 1974-07-12
Abstract: 1504288 Knitting RIDLEY SPRIGGS & JOHNSON Ltd 30 June 1975 [12 June 1974] 30902/74 Heading D1K Seamless briefs are knitted in one piece on a circular hose machine and include a trunk portion 11 formed by rotary knitting, shaped front and back panels 14 and 15, 15a formed by either rotary or reciprocatory knitting with the back panel having a greater walewise extent to give greater fullness, a crotch portion 19 joining the two panels and being formed initially with an opening 21 which may be closed on or off the machine by a stocking toe-closing method and either leg openings (when the panels and crotch portion are formed by reciprocatory knitting) or leg opening sections (in the case of rotary knitting) adapted for slitting during or after knitting which extend in a walewise direction, the two panels and the crotch being shaped coursewise and/or walewise by variations in the stitch structure (e.g. tucking and floating) and, in the case of rotary knitting, by part coursing in the back panel. In the case of reciprocatory knitting, knitting of the front panel is delayed until a part of the back panel has been knitted. The leg openings are formed with turned welts.
Patent GB-1176219-A (GB)
Title: Improvements in or relating to Power Amplifiers
Inventor: BROWN CURTIS EARTHY
IPC: H03F1/50
Filed: 1967-07-05
Abstract: 1,176,219. Valve amplifying circuits. MARCONI CO. Ltd. 28 March, 1968 [5 July, 1967], No. 30970/67. Heading H3W. In a power amplifier which is driven from a driver stage via a transformer 5, 6, which may comprise a wideband ferrox cube transformer, negative feedback is applied by means of two capacitors 7, 8 connected in series between the anode of the valve and earth, with the secondary winding 6 of the transformer returned to the common point of the capacitors. An inductance 9 may be shunted across the grid circuit for phase correction purposes.
Patent GB-1184968-A (GB)
Title: High Efficiency RF Power Amplification
Inventor: BRUENE WARREN B
IPC: H03F3/217
Filed: 1968-06-28
Abstract: 1,184,968. Transistor amplifying circuits; amplitude modulation; pulse modulation. COLLINS RADIO CO. 28 June, 1968, No. 31021/68. Headings H3R, H3T and H4L. In a high-efficiency RF power amplifier and modulator, " on-off " switching means are provided in the D.C. power supply to control the power supply to an RF amplifier and are driven in accordance with signals from a modulating signal source: a low-pass filter is connected between the switching means and RF amplifier. Audio signals from source 15, Fig. 4, are fed over level-controlling potentiometer 30 to an amplifying transistor 33, the collector of which is coupled to the base of transistor 42 of a pair of transistors 42, 46 which are cross-coupled to form a multivibrator. Pulses which are of constant amplitude but width modulated in accordance with the audio signals appear across resistor 48 and are applied to an emitterfollower output amplifier stage comprising transistors 54, 55. The output from emitter-follower 54, 55 is applied over transformer 59 to the base of transistor 16<SP>1</SP> which forms a switch, its collector-emitter path being connected in the path from D.C. power supply 17 to the collector of RF power amplifying transistor 68. D.C. restoration is applied to the output from transistor 16<SP>1</SP> by means of diode 62 and the D.C. pulses are smoothed to produce an amplitudemodulated collector potential by means of lowpass filter 64, 65, 66. The arrangement is used to economize D.C. power: the audio signal may be derived from an envelope and syllabic filter 24, Fig. 2, coupled to a low power amplifying stage 21 in a radio transmitter, the input to which comprises modulated RF signal and may be of single-side band type. The output from envelope detector 24 is combined with a feedback signal, derived from the output of lowpass filter 18 via feedback regulator 25, in mixer 26, before application to the powersupply switching means 27. In another embodiment, transistors 83, 86, Fig. 6 are crosscoupled to form a free-running multivibrator; the coupling capacitors 88, 89 are given widely different values so that the mark-space ratio of its output is small. The collector-emitter path of a further transistor 76 forms the base circuit resistor of transistor 86: its impedance is varied in accordance with the audio signal from source 15<SP>1</SP> so variably decreasing the space period while maintaining the widths of the pulses constant. Audio signal is applied to the emitter of transistor 76 via Zener diodes 77, 78, switch 79 providing for shorting diode 77 so as to change the basic D.C. modulation level. The output from transistor 86 is applied over amplifier 91 to the base of D.C. switching transistor 16<SP>11</SP> and audio signal is returned by a negative feedback path comprising resistors 74, 75 to the base of transistor 76.
Patent GB-909070-A (GB)
Title: Process for treating starch-bearing materials
Inventor: MEISEL HARRY
IPC: C08B30/04
Filed: 1960-09-09
Abstract: A process for treating dried starch-bearing material to separate the soluble constituents from the insoluble constituents comprises milling the dried material sufficiently to break the cells containing the starch granules into fragments, rehydrating the resultant flour with an aqueous medium and subjecting the resultant slurry to continuous centrifugal separation to remove separately the soluble constituents in an overflow, and the starch and fibre in an underflow.  The starch-bearing material is preferably tapioca or sweet potato.  In a preferred embodiment tapioca chips dried to a moisture content of about 12% are ground to a particle size of 100 microns and water added to produce a slurry with a solids content of 8% and a pH of 7 which is centrifuged at 5,600 revolutions per minute.  The underflow containing all of the starch and fibre is passed to a fibre washing and separating system consisting of reels and screens which removes the fibre and the starch passes through a concentrator, a clean-up shaker and a 6-stage hydrocylone system to produce prime grade starch as product.  The whole process may be effected in 2 hours.