baber/WOPTO huggingface dataset:
Patent GB-138352-A (GB)
Title: Improvements relating to commutator assembling devices
IPC: H02K13/00
Filed: 1920-01-27
Abstract: 138,352. Toledo Standard Commutator Co., (Assignees of Alexander, L. A.). March 3. 1917, [Convention date]. Presses, machanical.-A commutator-assembling device comprises a series of circularly-arranged segmental jaws 3, the inner faces of which are recessed to conform to the outer circumference of the commutator, a press for applying end-pressure upon the commutator, and devices such as toggle arms for radially projecting and retracting the segmental jaws 3, preferably simultaneously with the movement of the press. A follow-block 4, on which the jaws 3 rest, is supported by springs 8 in a recess 5, and moves into contact with bhe bottom of the recess when the end pressure is applied. The lower clamping-ring d formed in one with the sleeve c rests on an anvil 12 formed with a raised boss 12<a>. Tha boss 13<a> on the anvil 13 has a curved surface which presses the end of the sleeve c around the upper clamping- ring d as the ram 14 descends.
Patent GB-210621-A (GB)
Title: An indicator for use with lubrication systems
IPC: F01M9/12
Filed: 1923-01-29
Abstract: 210,621. Hendy, A. E., and Baker, F. W. Jan. 29, 1923. Indicating in connection with; filtering; lubricant conveyed by mechanical means.-In a lubricating system in which a scoop collects oil from a moving part, the oil is delivered from the scoop through a chamber containing a float adapted to close an electric circuit when the supply is insufficient, the circuit including a warning device. As applied to a Ford engine, a scoop 5 collects oil from the flywheel 2 and delivers it through a filter 7 and pipe 9 to a chamber 10 containing a float 11. The scoop, which is formed from sheet metal, is secured by a flange 5<A> beneath a cover plate 6 and has apertures 5<c> which allow oil to drip on to the brake and gear bands 8. If the supply of oil from the scoop is insufficient, the float falls and bridges two insulated contactpoints 12, thereby completing an electric circuit 13 including a lamp or horn 14. The circuit 13 may be arranged to cause engine stoppage by earthing the generator plug 16. A pipe 15 leads from the lower part of the chamber 10 to the front trough 4 of the crank-case. The float 11, or another float, may be arranged to affect the same or another circuit by upward movement against a spring if an excessive amount of oil accumulates in the chamber 10. The Provisional Specification describes an oil tank, with or without a subsidiary measuring tank, connected to the sump and provided with a magneticallyoperated tap, whereby the level of oil in the sump may be maintained.
Patent GB-468645-A (GB)
Title: Improvements in switches for portable electric power tools
IPC: H01H21/10
Filed: 1936-01-29
Abstract: 468,645. Retractive switches ; snapaction switches. OLIVER, C., THORPE, J. R., and OLIVER PELL CONTROL, Ltd. Jan. 29, 1936, No. 2640. [Class 38 (v)] A switch for a portable electric power tool has means for positively starting the breaking movement, involving the compression of the coils of the snap-action spring till the spring acts as a solid member which exerts a positive thrust. In the form shown, actuation of a trigger 12 against the'action of a retractive spring 31 causes the longitudinal movement of a slide 21 connected to the trigger by a link 15. The slide 21 has a cross-bar 25 against which bears the head of a pin 23 passing through a slot in the end of the movable contact member 18 pivoted at 20. A spring 22 surrounds the pin 23 and moves the contact member 18 into and out of engagement with fixed contacts 30 with a snap-action when the slide 21 carries the pin 23 past a dead-centre position. During the " off " movement, if the frictional grip of the fixed contacts prevents the movement of the contact member 18 after the dead - centre position has been passed, the head of the pin 23, which has been lying in a slot 17x in a fixed frame 17, is lifted out of this slot by its downward movement and compresses the coils of the spring so that the latter becomes rigid and forces the contact member open. The switch may be held permanently " on " by depressing a push-button, Figs. 3 and 4 (not shown). This causes a spring strip to engage a projection on the trigger and prevent the return of the latter till a subsequent pressure on the trigger to move it fully home releases the detent and allows the trigger to return to its full extent.
Patent GB-929022-A (GB)
Title: Improvements in devices for measuring magnetic fields, even of low intensity, and, in particular, the earth magnetic field
Inventor: ABRAGAM ANATOLE
IPC: G01R33/24
Filed: 1960-01-25
Abstract: 929,022. Magnetic testing apparatus. COMMISSARIAT A L'ENERGIE ATOMIQUE. Jan. 25, 1960 [Jan. 30, 1959], No. 2663/60. Addition to 888,439. Class 37. In a magnetometer of the type described in the parent Specification comprising a solution of a paramagnetic substance placed in the unknown field, electronic resonance is induced in the substance by a rotating magnetic field perpendicular to the unknown magnetic field. Fig. 2 shows an organic glass vessel 1 containing one of the solutions specified in the parent Specification, within a weak unknown magnetic field Ho such as the earth's field. A rotating magnetic field at the electronic resonance frequency is provided by quadrature currents in coils 3a, 3b perpendicular to Ho and fed from a quartz oscillator 9. Coils 3a, 3b are respectively tuned by variable capacitors 6a, 6b above and below the frequency of oscillator 9 to provide the phase difference of 90 degrees. It is shown that the rotating field causes a strong emission of energy at the nuclear resonance frequency, e.g. 2 kc/s., which is proportional to the unknown field strength. The energy is received by a coil 4, screened by a shield 5 and tuned to resonance by a capacitor contained in a regenerative amplifier 14. The output of amplifier 14 is fed via a tuned amplifier 15 to a decade divider 16. The output of a 100 kc/s. quartz oscillator 18 is shaped by a circuit 19 and counted by a 6- decade divider 20 for a period determined by a trigger 17 operated after 10,000 cycles of the unknown frequency. A recorder 21 provides at least the last two digits of the time taken to count the 10,000 cycles of the unknown frequency and thus gives an indication dependent on the unknown field strength Ho. In Fig. 4, the 90 degrees phase difference is provided by coaxial lines 22a, 22b, differing in length by a quarter wavelength. Capacitors 25a, 25b match the coils 3a, 3b to the lines. Specification 914,751 also is referred to.
Patent GB-900495-A (GB)
Title: Improvements in or relating to encoder circuit
IPC: H03M7/08
Filed: 1960-01-25
Abstract: 900,495. Recoding circuits. BURROUGHS CORPORATION. Jan. 25, 1960 [Jan. 30, 1959], No. 2684/60. Class 40 (1). A code-changing circuit comprises a number of input devices 11, Fig. 1, one of which provides a signal identifying the data to be recoded, and a number of bi-stable units 15-18 each having set and re-set inputs, each of the input devices being connected to one or other of the two inputs of each of the units 15-18 so that as data arrives it automatically cancels the previously reistered data and sets up a new combination of units 15-18. If more than one of the input leads is energized, an error signal is produced. The input devices may be the recognition circuits of a character recognition apparatus, one for each character and only one should produce a signal. The output represents the recognized character in binary scale code or in Gray code. Each bi-stable unit comprises four transistors 25-28, Fig. 2, the set or " one " inputs 29 being connected to the base of transistor 25 and the reset or " zero " inputs 30 to transistor 28. The transistors 26 and 27 form the bi-stable pair. In the unset state transistor 27 conducts, the point 31 being raised from a negative potential to nearly earth potential. This being applied to the base of transistor 26 prevents it conducting until a negative input signal on the terminals 29 causes transistor 25 to conduct and raises point 37 to nearly earth potential. Point 33 also rises and with it the base of transistor 27 which stops conducting and causes transistor 26 to conduct. The bi-stable device is now in the "1" state. The outputs appear on terminals 36, 36a. If, owing to some malfunctioning inputs appear on both the set and reset inputs of the bi-stable device, the transistors 25 and 28 conduct to raise the potential of points 37 and 38. An AND gate consisting of diodes 39 and 40 responds to this condition to produce an error signal on the terminal 41.
Patent GB-1055922-A (GB)
Title: Epoxy resin compositions
IPC: C08K5/5398
Filed: 1964-01-22
Abstract: Curable compositions comprise an epoxy resin and as a reactive diluent a phosphorus ester of the formula <FORM:1055922/C3/1> wherein Y is O or S, R1 and R2 are each methyl or phenyl and R3 is methyl, provided that when R1 is phenyl, R2 and R3 together can form an ethylene group. The compositions are cured by the addition of a conventional curing agent for epoxy resins.  The compositions may also contain inert or reactive plasticizers, fillers, fibrous reinforcements, thickening agents, catalysts and solvents.  In comparative examples triethyl, tributyl, trischloroethyl, trisdichloropropyl and tricresyl phosphates and triphenyl phosphite are used.
Patent GB-565217-A (GB)
Title: Improvements relating to weavers', warpers' and like textile beams or rollers
IPC: D02H13/28
Filed: 1943-02-19
Abstract: 565,217. Warp beams. HODGSON, F. S. Feb. 19, 1943, No. 2805. [Class 142 (ii)] Each end flange of a warp beam is secured in position by one or more two-part collars f fitting in a recessed part a of the beam, the boss of the flange i being held to the collar by screws j. In the form shown, one two-part collar only is employed having projections h entering grooves e in the,recessed part of the beam. In an alternative form, two collars are employed and are embraced by a sleeve fitting within the boss of the flange. The screws j pass through the boss, the sleeve, and either of the collars.
Patent GB-1213694-A (GB)
Title: Photographic cameras having a retractive lens housing
Inventor: SCUDDER JAMES FISK
IPC: G03B17/04
Filed: 1968-01-18
Abstract: 1,213,694. Retractable cameras. EASTMAN KODAK CO. Jan. 18, 1968 [Jan.18, 1967], No.2815/68. Heading G2A. A photographic camera has a retractable lens housing, with opposed springs which urge the housing into an extended position, and releasable latches for retaining the housing in retracted position. As shown, a main support frame 19 has a central rectangular opening 22, whose forward end is reduced in area by a shoulder and lip configuration 23, 24. This acts as a guide within which slides a block 25, forward movement of the block being limited by a flange 27 thereon. Screwed on to the front face of block 25 is a plate 28 which carries the shutter and diaphragm mechanism, and fixed to plate 28 is the housing shell 16 which carries the lens 14. Thus plate 28, shell 16, and block 25 all move together as an integral unit. This unit is urged forward into the operative position by two springs 34,35 (the upper spring 34 being more fully visible in Fig. 2), which are held against the shoulder and lip portion 23, 24 of block 25 by a collar 36 secured to the block. Upper spring 34 has a central portion 37 held under ears 43 of collar 36, and a bent portion 41 at one end also held by ears on collar 36. Its other end 38 is torsionally movable, its free end 39 bearing against plate 28 to urge it forwards. Lower spring 35 is similarly arranged. The movable unit is retained in its retracted position, against the action of springs 34, 35 by two latches 45, one at each side. Each latch is located in a notch 47 in collar 36, and has a forward arm 49 biased inwardly by a spring 51. An inwardly extending tooth 54 on the latch enters a notch 55 on shell 16 when this is pushed back far enough, and so locks it in the retracted position. To release the latch, an external button on the camera housing is pressed, which pushes upwards a release bar 56. This has vertical arms 57 each ending in a sloping cam surface 62. Cam 62 engages under a sloping ear 63 of latch 45, pushing it outwards and so out of engagement with notch 55, thus freeing the movable assembly to be pushed forward into the extended position by springs 34, 35.
Patent GB-1280122-A (GB)
Title: Oxidation catalysts and their use in the partial oxidation of olefines
IPC: C07C45/35
Filed: 1970-01-21
Abstract: 1280122 Oxidation catalyst CELANESE CORP 21 Jan 1970 [29 Jan 1969 24 Feb 1969 5 March 1969] 2826/70 Heading B1E [Also in Division C2] A catalyst composition comprises molybdenum, cobalt, tellurium, oxygen and either rhodium or boron such that for every 100 atomic proportions of molybdenum present there are 0.1 to 7.0 of Te, 300 to 900 of oxygen, 40 to 200 of Co and either 5 to 75 of B or 0.1 to 3 of Rh. The composition is prepared by calcination of a mixture of the oxides and/or compounds yielding the oxides on calcination. The composition may be supported, e.g. on silica, alumina, silicon carbide, alumina-silica, titania, charcoal or clays. The catalyst is suitably used in the presence of water vapour.
Patent GB-514202-A (GB)
Title: Improvements in or relating to electric switches for alternating current circuits
IPC: H01H9/38
Filed: 1938-01-29
Abstract: 514,202. Switches combined with couplings. SCHOLES & CO., Ltd., G. H., SCHOLES, G. H., and PEARCE, F. J. Jan. 29, 1938, No. 2857. [Class 38 (i)] [Also in Group XXXVII] In a tumbler switcl for alternating curren the switch is mounted on a base 7 along with a three-pin socket com prising two blade sockets 9, 10 staggered with respect to a round earth-socket 11.
Patent GB-174937-A (GB)
Title: Improvements in and relating to electric heating and cooking apparatus
IPC: F22B1/30
Filed: 1922-02-01
Abstract: 174,937. Topp, W. B. Feb. 5, 1921, [Convention date]. Generating by electricity. -An electrical heating-apparatus comprises a closed chamber 1 and an attached or integral receptacle 3 at the lower end thereof containing electrodes 5 separated by imperforate insulating partitions, the electrodes being connected to a source of alternating current and having their upper surfaces below the top of the partition. The receptacle is filled with water, when cool, to a level above the partition, so that as steam is generated the current varies with the water level. The chamber 1 and receptacle 3 may be made of metal lined with an insulating enamel, or the receptacle 3 mav be of porcelain and may contain four electrodes separated by three partitions. Acids or salts may be added to the water to increase its conductivity.
Patent GB-1471855-A (GB)
Title: Producing rolled steel products
IPC: C21D1/18
Filed: 1976-01-26
Abstract: 1471855 Working at specified temperatures CENTRE DE RECHERCHES METALLURGIQUES CENTRUM VOOR RESEARCH IN DE METALLURGIE 26 Jan 1976 [29 Jan 1975 28 Feb 1975] 2942/76 Heading B3V [Also in Division C7] Rolled bars, rods or sections are cooled to a temperature in the range Ac 3  to (Ac 3  + 150 C.) before entering the finishing stands of the rolling mill, on emerging from which they are quenched to form a martensitic or bainitic surface layer, sufficient heat being retained in the unquenched core that on subsequent selftempering the surface reaches a temperature of 450-750 C., preferably 550-700 C. The martensitic/bainitic region may comprise 10- 50% of the cross-sectional area. Both the initial cooling and the quenching may be carried out with water, possibly in a number of stages, while the initial cooling may be followed by an opportunity for temperature homogenization before rolling.
Patent GB-1000082-A (GB)
Title: Graft polymers and methods of preparing them
IPC: H01B3/18
Filed: 1962-01-26
Abstract: Polymerizable vinylidene compounds are grafted on to cellulose crystallite aggregates having a level off degree of polymerization, which reflects the destruction by acid hydrolysis of the original fibrous structure of the cellulosic source material.  Vinylidene compounds specified are acrylic and methacrylic nitriles, amides and esters, diolefines, allyl alcohol and esters, vinyl esters and ethers, styrene and its derivatives, vinyl and vinylidene chlorides, methyl vinyl carbinol, divinyl sulphone, divinyl sulphide, and vinyl pyridine.  The cellulose aggregates may be pretreated by oxidizing or reducing aldehyde end-groups to carboxyl or hydroxyl groups.  The grafting is carried out by reacting the vinylidene compound with the cellulose aggregates in an aqueous medium having a pH of less than 5 and in the presence of an ionizable ceric salt.  The resulting graft polymers may be used as insulating materials. The examples describe grafting acrylonitrile and methacrylonitrile on to cellulose aggregates with the aid of ceric ammonium nitrate as a catalyst. In Example (5) the cellulose is pre-reduced with sodium borohydride. Specifications 874,945 and 970,111 are referred to.
Patent GB-1483833-A (GB)
Title: Shearing using a helical shear blade
IPC: D06C13/00
Filed: 1975-01-23
Abstract: 1483833 Shearing fabrics SEVERIN HEUSCH 23 Jan 1975 [1 Feb 1974] 3017/75 Heading D1S A helical shear blade 2', e.g. for cooperation with a straight edge of a fixed counter blade 4 for shearing the pile 7 of a fabric or carpet, has an outer cutting edge which defines the surface of a notional cylinder and is in the form of a zig-zag saw-toothed line whose crests define a notional helix coaxial with the cylinder, each zig-zag having a cutting flank 15' and the cutting angle 14', i.e. the angle between each cutting flank and the axis of the notional cylinder, being smaller than the notional helix cutting angle 12, i.e. the angle between the tangent to the notional helix at any point and the axis of the notional helix, and is equal to the absolute difference between that notional helix cutting angle and the angle of set 13' of that flank, i.e. the angle between the tangent to the notional helix at a crest and the flank 15'.  In the embodiments shown, the angle 14' is about 5‹, Fig. 9, a negative angle of about 5‹, Fig. 10, and is substantially zero, Fig. 11. In each embodiment, the shorter, non-cutting flanks are undercut.
Patent GB-1469034-A (GB)
Title: Device for comminuting and/or conveying flowable material
IPC: B02C18/16
Filed: 1975-01-23
Abstract: 1469034 Centrifugal pumps G NEIDL 23 Jan 1975 3042/75 Heading F1C [Also in Division B2] Apparatus for pumping and comminuting comprises a casing 1 ... 4, Fig. 1, with a rotor from which extends a pair of plates 10, 11 inclined outwardly from each other and from the rotor shaft axis in a direction towards an axial material inlet 7. The housing includes a material outlet or outlets 5, 6. The plates may be formed as a V- or U-shaped member, there may be more than one pair of plates, Fig. 2, the plates may be parabolically curved, Fig. 4 and their edges may have teeth meshing with corresponding grooves 12, Fig. 1, on the internal wall of the housing.
Patent GB-101372-A (GB)
Title: An Improved Holder for Carrying Two Separate Electric or other Wires or Cables.
Inventor: GROCOTT JOHN EDWARD
IPC: F16L3/237
Filed: 1916-03-01
Abstract: 101,372. Grocott, J. E. March 1, 1916. Clamps, screw. - A holder for carrying wires or cables comprises a body part a having curved slots in which the wires &c. g<1> are placed, and a clamping-member, shown detached in Fig. 4, which is adapted to fit inside the part a and hold the wires &c. in position when the holder is secured to its wood or other support by a screw or bolt m. The holder may be of oblong, square, or circular shape in plan.
Patent GB-189379-A (GB)
Title: Holder for playing cards
IPC: A63F1/10
Filed: 1922-02-03
Abstract: 189,379. Castles, R. C. Feb. 3, 1922. Holdcrs, card.-A holder for playing-cards comprises a base 5 to which is hinged a semicircular clamping-plate 7 carrying a larger clamping plate 12 secured to the plate 7 by means of spring-controlled bolts 11. The playing- cards are inserted between the two plates which are faced with felt and when in use occupy an inclined position as shown in Fig. 2. When not in use the plates may be folded down.
Patent GB-887767-A (GB)
Title: Electrical analogue computing devices
Inventor: WILBY WILLIAM PETER LANHAM
IPC: G06G7/164
Filed: 1959-01-29
Abstract: 887,767. Electric analogue computers. NATIONAL RESEARCH DEVELOPMENT CORPORATION. Jan. 29, 1960 [Jan. 29; 1959], No. 3172/59. Class 37. [Also in Group XL (b)] An analogue squaring or multiplying device comprises a piezo-electric crystal which is stressed in proportion to the square of an electric or magnetic field generated by an electric input signal so that the electrical output signal from the crystal, proportional to the stress on said crystal, is therefore proportional to the square of the input signal which property can also be used to derive the product of two input signals. In the embodiment of Fig. 1, the input current energizes an electromagnet 4, 5, the force on the armature 3 being proportional to the square of the magnetic flux generated (and therefore to the square of the input current) and said force stresses a piezo-electric crystal 1 secured to said armature, the stress on, and therefore the electrical output from, the crystal 1 being proportional to the input current squared. An embodiment for obtaining an output proportional to x, y is shown in Fig. 2 where a current proportional to x+y energizes a core 4 on one side of the armature 3 and a current proportional to x - y a core 4a on the other side. Other arrangements for obtaining an output corresponding to x, y in which the crystal is stressed by a force due to a magnetic field are described (Figs. 3-6, not shown). In the squarer shown in Fig. 7, the electrostatic field between a metal plate 12 (to which the input is applied) and the crystal 11, silvered on both sides, is proportional to the square of the input current, and the electric output signal at 14, 15 corresponding to the stress on the crystal is also proportional to the square of the input current. In the arrangement shown in Fig. 9, a potential difference x+y is applied across a piezo-electric crystal 20 and a potential difference x - y across crystal 20a. The resultant contraction in the horizontal length of crystals 20, 20a due to bending is stated to be proportional to (x+y)<SP>2</SP> [or (x-y)<SP>2</SP>] so that the potential output from crystals 18, 18a fixed to 20, 20a is proportional to x,y. Electrostrictive or magneto strictive members may replace 20, 20a. A squarer using a bar of magnetostrictive material 24 fixed to a crystal 23 in a yoke 25 is shown in Fig. 10, the change in length of bar 24 due to magnetostriction being stated to be proportional to the square of the energizing field, so. that the electrical output at 27, 28 from the crystal is proportional to the square of the current through 26. In order to increase the stability and frequency response of a device according to the invention two piezo-electric output crystals may be used instead of one and negative feedback provided between them (Fig. 11, not shown).