baber/WOPTO huggingface dataset:
Patent GB-423197-A (GB)
Title: Improvements in, or relating to, electric switches of the rotary snap-action type
IPC: H01H19/24
Filed: 1933-09-01
Abstract: 423,197. Snap - action switches. CRABTREE, J. A., Endwood, Little Aston Park, Sutton Coldfield. Sept. 1, 1933, No. 24260. [Class 38 (v)] A multi-position rotary snap-action switch suitable for controlling an electric cooker comprises a spindle b having loosely rotatable on it a contact carrier a formed of insulating discs a<1> carrying contacts a<2> suitably spaced for co-operation with fixed contacts a<3>. A torsion spring c<1> surrounds the spindle band has one end engaging a housing h fixed on the spindle while the other end engages a lug on a driving disc c fixed to the contact carrier a. Also fixed on the spindle b is a plate g having diametrically opposed pockets g<1>, g<2> and intermediate flat parts g<3>. Above the plate g is a plate e<2> fixed to the casing and having two holes e<3> in which are positioned metal balls e, e<1>. Above the balls e, e<1> is mounted on the contact carrier a locking plate d formed with diametrically opposed depressions d<1>, which co-operate with the balls e, e<1> to lock the contact carrier in its operative positions and to restrain the carrier while the spring c<1> is being strained. In the position shown in Fig. 1, the balls e, e<1> are held in the raised position by the flat portion g<3> of the plate g and engage on either side of the depression d' of the plate d and lock the contact carrier a. If the spindle b is turned anticlockwise by the knob f, the spring c<1> is strained, but the contact carrier is prevented from turning by the ball e<1> until the plate g has turned sufficiently for the pocket g<1> to be below the ball e<1> which then drops (see Fig. 3) to release the contact carrier. The contact carrier then rotates until arrested by the ball e which lies in the path of the other depression d' having been raised by the other flat surface g<3> of the plate g. The spring c<1> is arranged to be overwound at this stage and the spindle b runs back slightly on release of the handle causing the ball e<1> to be raised so that each ball engages one of the depressions d<1> to lock the carrier a as in Fig. 4. The switch may be operated by rotation of the spindle in either direction.
Patent GB-405724-A (GB)
Title: Improvements in tobacco pouches
IPC: A24F23/04
Filed: 1932-08-31
Abstract: 405,724. Sliding clasp fasteners. STANLEY, F., Explorer Leather Works, Wolverhampton Road, Walsall. Aug. 31, 1932, No. 24274. [Class 44.] Overlapping flaps 10 are attached to the inner edges of the end opening portion of a tobacco pouch having a pipe compartment to prevent the bowl of the pipe from being damaged by the teeth of the sliding-clasp fastener. The flap may have stiffeners 13.
Patent GB-1121458-A (GB)
Title: Hydrous alumina
IPC: C01F7/428
Filed: 1966-05-31
Abstract: Hydrous alumina is prepared from solid, finely divided aluminium and liquid water, by scouring a mixture of hydrous alumina and unreacted aluminium in an aqueous medium until substantially all the particles in the mixture have a size of less than 50 microns and there is more than 95% conversion, the mixture before scouring containing at least 1% of aluminium-containing particles having a size of more than 50 microns.  The mixture may be scoured until more than 99% of the aluminium is converted to alumina, by means of a colloid mill with a clearance of 0.001 to 0.003 inches, and the starting material may have a surface area of 75,000 to 1,000,000 square millimetres per gram and more than 5% of the particles may have failed to pass through a 325 mesh sieve.  The process may be carried out at an acid or basic pH, in the presence of a lower, non-oxidizing fatty acid, e.g. formic acid. Before scouring, the conversion of aluminium may have stopped with less than 95% of the aluminium converted.
Patent GB-1496455-A (GB)
Title: Method and apparatus for the continuous production of endless driving belts
IPC: B29D29/08
Filed: 1976-06-11
Abstract: 1496455 Moulding driving belts BRECO KUNSTSTOFFVERARBEITUNGS GmbH & CO KG 11 June 1976 [14 June 1975] 24366/76 Heading B5A A reinforced plastics tube 15 from which endless drive belts are cut is moulded by continuously feeding plastics material and a reinforcing insert into the arcuate space between a mould wheel 1 and an endless mould belt 3, passing the continuous strand issuing from the moulding space around a tensioning wheel 11 which can be adjustably positioned to produce different sizes of belts, and returning the strand to the arcuate space at a position offset axially of the wheel by the thickness of the strand so that it becomes joined to the succeeding portion of the material being moulded therein and a tube is produced which rotates with wheels 1, 11 and is delivered axially therefrom. The mould belt 3 is passed round pulleys 4. Guide pulleys 14 direct the strand axially so that it repeatedly passes around the wheels 1, 11 in a helical path and the adjacent turns become united. An enlarged part 6 of the mould wheel 1 seals the side of the arcuate cavity at which the plastics material is introduced. The reinforcement is located in the moulded tube 15 by projections 10 on the wheel 1. The reinforcement is introduced through a sealing device 9, Fig. 1, and the plastics material may be introduced here or, as in Fig. 3, from inside the mould wheel 1. Plastics material from a central conduit 18 is fed through pipe 17 and an annular passage 16 into cylinders 20. Each cylinder 20 communicates through a narrow opening 21 with a groove 8 in the wheel for moulding a tooth on the belt. Pistons 23 in the cylinders are controlled by a cam surface 24 secured to springs 25 to prevent overloading of the pistons. Where the wheel 1 is covered by the mould belt 3 the pistons are withdrawn to allow material to flow into the mould and are pushed forward to close off the supply and compress the material before it leaves the mould.
Patent GB-1193777-A (GB)
Title: Spread Applicator
Inventor: NORTH DONALD EDWARD
IPC: A47G19/26
Filed: 1968-05-22
Abstract: 1,193,777. Buttering bread; sandwich making. D. E. NORTH. 22 May, 1968 [23 May, 1967], No. 24382/68. Heading A2A. A spread applicator suitable for buttering bread or filling sandwiches comprises means for feeding bread slices in succession from a stack 21 past an applicator 11 which is supplied with butter or other spread by a hopper 9 in which the spread is contained under the pressure of a weight 12 and which includes a pair of screw conveyers 10 for advancing the spread to the applicator, there being provided a rotary valve 19, adapted to be opened as each slice is fed past the applicator by a pair of driven spiked rollers 24, and by-pass passages 16 on either side of the pair of screw conveyers through which the spread may be returned to the hopper when the valve 19 is closed, butterfly valves 17 in these passages being linked mechanically to the valve 19 such that when valve 19 opens valves 17 close and vice versa. The rollers 24 together with further rollers 25 and 36 are driven from a motor 13 which also drives the conveyers 10. A spring- loaded plate 23 presses the slices against the applicator, and a further spring-loaded plate 29 spreads the butter &c. evenly over the slices. The stock 21 is automatically advanced by a pair of springs 34. The spread slices are received in a rack 26 where they are gripped and caused to advance in stack formation, advancing of the stack being effected by a push plate 40 actuated by a solenoid 41 which is energized by a micro-switch contacted by each slice during transit between the applicator and the rack.
Patent GB-1153615-A (GB)
Title: Process and Machine for the Automatic Production of Envelopes formed by Buckle-Folding
Inventor: PAHLITZSCH BRUNO
IPC: B31B150/00
Filed: 1966-06-01
Abstract: 1,153,615. Envelope folding and delivering apparatus. B. PAHLITZSCH. 1 June, 1966 [21 June, 1965], No. 24434/66. Heading B8R. [Also in Division B5] Lottery letters in the form of sealed envelopes are produced by feeding the lowermost envelope blank from under a stack 6 by a suction member 7 to a conveying roller 5 and then on to a roller conveyer 4 which advances the envelope blanks successively through a perforating device 8, blank edge glueing device 9 and a blank folding device 10, which folds the blanks into sealed envelopes, whose lateral marginal edges are then passed through milling and/or embossing devices 11, 12 to prevent tampering. The envelopes are then passed through a photoelectric counter 13, and the counted envelopes are stacked in an edge-on condition in an auxiliary stacking device 2, which is removably associated with the envelope producing machine 1 and includes a vertical roller conveyer 4 and a set of diverting rollers 14. In another embodiment in which the machine 1 produces a package containing an enclosure the stacking device 2 is replaced by an extension 16 which includes a magazine 17 containing the enclosures inserted into the envelopes having an unsealed flap by a reciprocating slide 18 operated by pivotal arm 19, when the envelopes are arrested periodically by a pivotal stop 21. Filled envelopes are then advanced into a recess of a striker 24 whereupon a reciprocating blade 25 folds and seals the open flap of the envelope in conjunction with a pair of rollers 23.
Patent GB-406382-A (GB)
Title: Improvements in counter bill books
IPC: B42D3/14
Filed: 1932-09-03
Abstract: 406,382. Bookmarkers. BAILEY, J., 96, Church Lane, Handsworth Wood, Birming- ham, and DEBECEY WHOLESALE & MANUFACTURING CO., Ltd., Oldbury, Worcestershire. Sept. 3, 1932, No. 24599. [Class 16.] A device for holding back the used leaves of bill books, such as counter check books, and serving also as a bookmarker, consists of a plate or member 15, pivoted to the front cover 11 of the book by means of a pivot-rod 13. The plate may be of metal or other material heavy enough to retain the used sheets, or a spring may be used. The plate may have grooves 16, 17 to receive a writing tablet or sheet, or may be itself of material adapted to receive writing. The plate may be hinged to either end of the cover instead of to the side.
Patent GB-1026671-A (GB)
Title: Improvements relating to scales,especially for oscilloscopes
Inventor: SHACKEL BRIAN
IPC: H01J31/12
Filed: 1961-07-08
Abstract: 1,026,671. Cathode-ray tube accessories. ELECTRIC & MUSICAL INDUSTRIES Ltd. July 9, 1962 [July 8, 1961], No. 24816/61. Heading H4T. A desired one of a group of calibrated scales or representations of reference waveforms selected in accordance with the setting of a scale range control device is visibly produced superimposed on or otherwise associated with the screen of a cathode-ray oscilloscope the magnitude of the waveform displayed on which is responsive to variations in the setting of the scale range control device. Fig. 1 shows one embodiment in which a waveform to be displayed from terminal 7 is fed to the vertical deflection plates 4, 4 of an oscilloscope 1 via an attenuator 8 having three settings corresponding to scale factors 1, 2 and 5 and then via an amplifier 6 having three gain settings corresponding to scale factors 1, 10 and 100. A total of five calibration scales is thus required and these are provided by four sets of laminµ (one for each of the + and - directions of the X and Y co-ordinate axes) comprising, in the case of the +Y axes, three superimposed lamina Y<SP>1</SP>, Y', Y<SP>5</SP> (calibrated as depicted in Fig. 2 (not shown) and, adjacent lamina Y<SP>5</SP>, two side-by-side lamina Y10, Y100 calibrated with zeroes (also Fig. 2). All the laminµ may be edge illuminated by respective lamps L selectively energized from a battery B via switches S1, S2, the arms of which are mechanically linked with the controls of the amplifier 6 and attenuator 8 so that calibrations appropriate to the settings of the latter are rendered visible. In another form of the invention representations of the various scales and reference waveforms are formed as transparencies carried by a turret (Fig. 5, not shown), and optically projected, selectively in accordance with the settings of 6 and 8, on to the rear surface of the oscilloscope screen through a window formed in the body of the tube, either directly (Fig. 3, not shown), or, after reflection from a mirror mounted inside the tube (Fig. 4, not shown). Alternatively, the representations may be projected on to a separate screen associated with the oscilloscope screen. In a further form the representations of the scales and waveforms may be carried by a transparent disc through which the screen is viewed or they may be inscribed on a cylinder located at the side of the screen the movement of the disc or cylinder being controlled in accordance with the settings of the amplifier and attenuator as described above.
Patent GB-1005423-A (GB)
Title: Device for generating helices on revolving bodies
IPC: B23Q5/48
Filed: 1962-06-29
Abstract: 1,005,423. Lathe details. ETUDE ET REALISATION D'OMNIS PRECISION E.R.O.P. C.L. GODAR. June 29, 1962 [July 13, 1961], No. 25024/62. Heading B3T. A machine for screwing or producing helical grooves on work P comprises a work spindle 3 driven by a gear train 10, which also rotates a lead screw 6, through an epicyclic gear train 11-14, to move the work relative to a tool (not shown) mounted on base 1. The planet carrier 12 has teeth which co-operate with a rack 15, and the latter has a roller 17 slidable in a block 19 carried by base 1. When block 19 lies parallel to the axis of screw 6, the pitch produced on the work is governed by the ratio of gears 10, 11-14, and the lead screw, but if the block is moved away from this position, displacement of head 2 is accompanied by movement of rack 15, and therefore by rotation of carrier 12, to thus vary the pitch produced.
Patent GB-423611-A (GB)
Title: Improvements in and relating to joints for mine arch section metal bars
IPC: E21D11/22
Filed: 1933-09-11
Abstract: 423,611. Structural metal joints. RICHARDS, F., Glanareth, Baglan Road, Port Talbot. Sept. 11, 1933, No. 25065. [Class 20 (ii)] Mine-arch metal section-bars are joined together by fishplates, and the holes M through the bars for the bolts or rivets are so disposed relatively to the abutting ends of the bars N that the length of the unperforated area of web on each bar is not less than the depth of the web lying between the flanges of the section-bar. If bearer bars F are interposed between the ends of the arched sections, as shown in Fig. 4, the fishplates may comprise continuous bars disposed on each side of the bearer bar, and the holes in the overlapping ends of the fishbars are disposed so that the requisite area of unperforated web surface in the ends of the arched bars is provided.
Patent GB-1040409-A (GB)
Title: Recovery of oil and gas from solid carbonaceous materials
IPC: C10B49/16
Filed: 1965-06-14
Abstract: A process for distilling solid carbonaceous materials, e.g peat, sawdust, wood chips, coal, tar sands and especially oil shales, comprises pyrolyzing the material in a first zone 7 by milling contact with solid heat-carrying bodies (metal, ceramic or alumina balls), separating the bodies from the carbonaceous residue (e.g. shale coke), in a second zone 14 burning the residue to produce heat-carrying ash, and in a third zone 16 pyrolyzing fresh material by contact with the ash.  The bodies are circulated via 10, 11 through a heater 6 from which flue gases pass via 2, 3 to a cyclone 4 where the material is preheated to 300 DEG  to 600 DEG  F. At 15 the ash is separated from flue gases and passed to the zone 16 for contacting preheated fresh material.  The zones 7, 16 are inclined revolving drums, and the drum 16 preferably contains metal balls. Pyrolysis temperatures of 750 DEG  to 1300 DEG  F. (371 DEG  to 705 DEG  C.) are mentioned.  Two or more drums 16 may be employed, e.g. ash may be passed serially from one drum to the next, or the drum 7 may supply ash to two drums 16.
Patent GB-752617-A (GB)
Title: Can feeding mechanism
IPC: A23L3/00
Filed: 1954-08-30
Abstract: 752,617. Endless chain conveyers; shoots. TRIGGS, W. W. (Food Machinery & Chemical Corporation). Aug. 30, 1954, No. 25099/54. Class 78 (1). A feed mechanism receives cans from two separate rows and delivers them in timed and spaced relationship in a single row to the spaced pockets of an elevator feeding a continuous cooker. The cans C, Fig. 3, roll down a shoot 25 in two rows on to endless chain conveyers 22, 23 which deliver them into pockets 27 between spaced rods 28 in a timing and spacing reel 29. The cans rest on a curved plate 30 between which and the reel are disposed cam plates 35, 36, Fig. 7, so arranged as to align the cans in single file. The rods 28 push the cans along the plate 30 and deliver them to the pockets 32 of an endless chain elevator 33. A plate 49 divides the shoot into two channels and also separates the conveyers 22, 23. An overhead guide plate 128 in each channel is supported by a looped flat spring 129 which is anchored to a bracket 135 mounted on the shoot. Each conveyer 22 or 23 comprises a series of semicylindrical cups 77 supported by parallel plates 78 which are pivoted to chain links 53. The shaft 63, to which the driving sprocket 55, Fig. 4, of the conveyer 22 is keyed has a hub 66 keyed to one end. This hub has a radial flange 67 provided with diametrically-opposed tapped holes 68 which receive cap screws 74. These screws extend through curved slots 75 in a sprocket 70 which is mounted on the hub. A driving chain 88 passes round the sprocket 70 and the driving sprocket 89 of the elevator 33. The elevator and the conveyer are driven in correct relationship by adjusting the sprocket 70 on the hub 66. The driving sprocket 81 of the conveyer 23 is mounted adjustably on a hub 82 keyed to the shaft 63. The position of this sprocket is adjusted until the cups 77 are in staggered relationship as in Fig. 7. The shaft 63 and the driving shaft 100 of the reel are connected by gears 104, 105, the latter of which is adjustable angularly on the shaft to ensure that the reel rotates in correct timed relation with the conveyers. Overhead guides 148 retain the cans in the cups as they travel around the driving sprockets towards the reel. The reel comprises a cylindrical core 96, a pair of end discs 29 and a series of spaced rods 28.
Patent GB-600144-A (GB)
Title: Improvements in or relating to lawn mowers
IPC: A01D69/02
Filed: 1945-09-28
Abstract: 600,144. Lawn-mowers. INSHAW, G. R. Sept. 28, 1945, No. 25219. [Class 6(ii)] A lawn-mower incorporates a power unit 1 which is adapted to drive exclusively a rotary knife 3 operating in co-operation with a ledger blade the rotary knife being positioned at the front of the mower in advance of all guiding and running rollers or wheels. In the construction shown the power unit is an electric motor controlled by a switch 6 and having its cable 5 passing around a self-tensioning drum 4 and thence to a power point. A cable guard 8 is mounted in front of the cutter 3.
Patent GB-1267565-A (GB)
Title: Electropneumatic control means for a compressed-air braking system
IPC: B60T13/26
Filed: 1969-05-16
Abstract: 1,267,565. Pneumatic braking systems. KNORR-BREMSE G.m.b.H. 16 May, 1969 [21 May, 1968], No. 25223/69. Heading F2F. An electropneumatically and pneumatically operated automatic air braking system for a train is provided with electropneumatic release and application valves 22, 18 and is controlled by a variation of pressure in a control pipe and includes a throttle 12 to control the rate of delivery of air from a reservoir 4 to a brake cylinder 5 during purely pneumatic operation caused by a reduction in control pipe pressure. Brakes released position.-Air normally passes to the inlet valve of a triple valve 1 from reservoir 4 via pipe 10, valve seat 31 of a minimum pressure valve, and pipe 11, a control member 38 of a maximum pressure valve being biased by the air pressure to seat a valve member 39 against seat 40, thereby closing communication via seat 40 between pipes 10, 11 since the pressure is higher than the maximum permissible in brake cylinder 5. Electropneumatic actuation.-Electromagnetic valve 18 is opened allowing air in train pipe 20 to fall by being vented through a nozzle 21 by way of pipe 19 and a chamber 36. Pressure in a branch 19<SP>1</SP> also falls causing triple valve 1 to open admitting air from reservoir 4 to brake cylinder 5 by way of a valve seat 3 of a relay valve 2 which is caused to open by admission of air from triple valve 1 to the underside of a diaphragm 6 by way of conduit 26 until the pressure reaches a level at which a further diaphragm 7 forces a control member 8 of the minimum pressure limiting valve against seat 31. Connection between conduits 30 and 11 through seat 31 is shut off and air ceases to flow from reservoir 4 to triple valve 1. While valve 18 is open a brake pressure sensing valve 15 is caused to open and after closure of connection between pipes 30, 11 air passes from a by-pass pipe 14 and pipe 11 to the inlet valve of triple valve 1 without passing through throttle 12, causing pressure thereat to be swiftly reduced until the maximum permitted pressure in brake cylinder 5 is no longer reached. Control member 38 then moves upwardly to open the connection between pipes 10 and 11 via throttle 12 allowing air once again to flow from reservoir 4 to triple valve 1, thereby causing rapid and undelayed pressure build up in brake cylinder 5. Pneumatic actuation.-Purely pneumatic actuation is carried out in the normal way. Throttle 12 causes delay in the build up of pressure since air has to pass via throttle 12 and thus the reduction of pressure at the inlet valve of triple valve 1 takes place more slowly than when throttle 12 is not effective. Brake release.-Electropneumatic release valve 22 is actuated and air from reservoir 4 passes to train pipe 20 and branch pipe 19 via conduits 32, 24 and a chamber 23. The pressure in pipe 19<SP>1</SP> is increased causing change-over of triple valve 1 and corresponding brake release.
Patent GB-873200-A (GB)
Title: Rotary abrading devices
IPC: B24D13/06
Filed: 1957-08-09
Abstract: 873,200. Abrasive tools. CODMAN CO., F. L. & J. C. Aug. 9, 1957 [Aug. 9, 1953], No. 25249/57. Class 60. A rotary abrading element comprises a disc 20, Figs. 1 and 3, and a number of resilient abrasive-coated strips 26 which are of greater width than the disc and are secured in radial slots 24 in its periphery at their inner ends. As shown in Fig. 3, the strips 26, which may be each formed from at least two separate or bonded together plies of abrasive-coated material, are secured to the disc (which may be of fibre board) by first being inserted into the slots 24, then folding over marginal portions 28 of the strip against opposite sides of the disc and finally bonding them thereto. When all the strips are thus secured, thin fibre side plates 30, Fig. 4, are then glued to the sides of the disc so that they cover the marginal portions. The strips may be coated with abrasive on both sides, and in the case of a two-plystrip their widths may be different. The strip may be coated with a fine abrasive on one side and a coarse on the other. As shown in Fig. 1, a wide abrading wheel may be formed by mounting several elements coaxially side-by-side and staggering their circumferential position so that the strips of one element align with the spaces between the strips of another.