baber/WOPTO huggingface dataset:
Patent GB-287047-A (GB)
Title: Improvements in and relating to slaughtering devices
IPC: A22B3/02
Filed: 1928-03-01
Abstract: 287,047. Rondel, F., and Iochum, G. March 12, 1927, [Convention date]. Slaughtering.-In a spring actuated slaughtering gun, the penetrating member 10 is separate from the hammer 15 which is driven forward by two independent spring systems, the springs 19 being tension springs and the spring, or springs, 20 being compression springs. The casing 1 has a screw cap 2 at its upper end and a cap 3 at its lower end which holds a disc 4, to which the tension springs 19 are secured in place. A safety cap 5 is removably attached to the cap 3 by a spring 6 which is released by pressing in the knob 7. The hammer 15 has projections 24 which slide in grooves 23, and has an extension 16 which ends in a ring or eye 17. More than one spring 20 may be used, the springs then being arranged 'concentrically, adjacent springs being of opposite hands. Semicylindrical members 21 are clamped on the casing 1 by screws 22, the members 21 carrying a handle 25 containing a spring-pressed trigger 26 which releases a detent 27 from under the head of the hammer 15. The gun is set by placing it on the device shown in Fig. 5, the cap 2 being held by brackets 34 whilst a hook on a chain 36 is engaged with the eye 17. By a handle 39 and pulley 37, the hammer is moved against the springs 19, 20 until it is held by the detent 27. The gun is then removed and brought into operation. The penetrating member 10 is turned, during its advance, by projections 11 engaging helical grooves 9. The hammer is arrested by a two-part ring 30, held in position by a sleeve 31, engaging a spring washer 32. The end of the member 10 is bevelled, sharpened and provided with a cleaning slot 14.
Patent GB-1417562-A (GB)
Title: Abrasion resistant material
IPC: B29C48/151
Filed: 1972-10-18
Abstract: 1417562 Polymer compositions ATLAS CORP 18 Oct 1972 [14 June 1972] 6650/75 Divided out of 1417561 Heading C3P A material, e.g. for providing an abrasion resistant ablative covering on a hose, comprises a mixture of an elastomer base and a particulate filler, the elastomer base being a silicone polymer, e.g. a silicone rubber, or polyvinylidine fluoride and the particulate filler being selected from polytetrafluoroethylene; fluorinated ethylene-propylene polymer and polychlorotrifluoroethylene. The filler particles are from 0À005 to 0À075 in diameter and the base and filler each constitute 25% to 75% by weight of the mixture. The elastomeric base preferably has thermal and oxidative stability at temperatures of 500 F and above; is flexible at temperatures below minus 100 F.; has electrical insulation properties which include resistance to corona breakdown; is resistant to weathering, ozone and chemicals; is non-corrosive to other materials, is non-flammable and self extinguishing and has surface properties which prevent other materials sticking thereto and the filler material is preferably chemically inert; stable over temperatures of from -425 to 500 F., is substantially friction free; substantially impermeable to moisture and vapours and is weather resistant. Fluorescent, light-reflective or radioactive substances may be added for the detection of damage to the material when used as a covering on a hose or alternatively various colouring pigments may be added in different strata for visual detection of damage. The use of the material for covering a hose and various methods of applying it are disclosed in the parent Specification 1,417,561 (see Division F2).
Patent GB-230629-A (GB)
Title: Improved method of and means for operating internal combustion engines
IPC: F02B19/14
Filed: 1924-03-15
Abstract: 230,629. BroquÞre, F. March 15, 1924. Cylinders receiving liquid fuel. -A nozzle I is arranged to inject fuel into a stream of air entering or leaving a chamber R, into which the whole of the air is compressed by the working piston. The fuel is injected gradually in such a manner that at any time during the injection period no more fuel is supplied than can be completely burnt by the amount of air passing at the same time into or from the chamber R. The chamber R may be provided with an auxiliary piston the motion of which controls the velocity of air flow past the fuel nozzle, I. Communicating chambers such as R. each having a fuel nozzle, may be provided. Gaseous, liquid, or pulverized solid fuel may be injected.
Patent GB-659915-A (GB)
Title: Improvements in or relating to non-linear resistors
IPC: H01C7/105
Filed: 1949-03-11
Abstract: 659,915. Lightning arresters. SOC. LE CARBONE-LORRAINE, and TESZNER S. March 11, 1949, No. 6701. Convention date, March 18, 1948. Drawings to Specification. [Class 38 (iv)] [Also in Group XXXVI] A resistor sensitive to voltage according to the equation R=A/V<SP>k</SP> especially suitable for use in lightning arresters, voltage surge limiters, and spark gaps, comprises an intimate coherent mixture of granules of a semi-conducting substance with an insulating binder in which are distributed granules of at least one other substance, having a secondary electron-emissive power higher than 2 and forming centres of secondary electron emission excited by primary electrons which are emitted by the semiconducting granules under the effect of an applied voltage. In the examples of manufacture fully described in the Specification silicon carbide granules form the semi-conducting constituent and beryllium oxide or copper or nickel and beryllium alloy particles form the secondary electron emission centres in a disc or rod-shaped ceramic body whose opposite faces are metallized to form electrodes. The theory of operation is discussed at considerable length with the aid of volt-ampere curves, Figs. 1 and 2 (not shown), and exaggerated representation, Figs. 3 and 4 (not shown), of the constitution of the resistor and the behaviour of the primary and secondary electrons under surge conditions. The invention is directed towards increase of the exponent k in the expression above with or without transitory hysteresis effects. As described a resistor which employs beryllium oxide crystals as the secondary electron emitters does not give a hysteresis effect, i.e. the primary and secondary electrons disappear simultaneously. Conversely a resistor which employs activated copper or nickel and beryllium alloy particles as the secondary electron emitters does give a hysteresis effect, i.e. the duration of the secondary electron emission is greater than that of the primary electron emission. It is stated that the semi-conductive granules may be sulphides, carbides, silicides, phosphides or arsenides with secondary electron emitters selected from oxides of alkaline earth or rare metals, e.g. (in addition to Be) Ba, Sr, Mg, La, Ce and Pr.
Patent GB-119199-A (GB)
Title: Improvements in and relating to Artificial Teeth.
IPC: A61C13/10
Filed: 1918-04-20
Abstract: 119,199. Dental Manufacturing Co., and Goldman, I. April 20, 1918 Teeth, artificial.-A tooth 1 is formed on its near face with a boss 2, undercut on all sides, and with a plain or headed pin 6 mounted centrally in the boss.
Patent GB-762128-A (GB)
Title: Electrode system for electron-beam valves, in particular for television picture tubes
IPC: H01J29/62
Filed: 1954-03-09
Abstract: 762,128. Electron optical systems. LOEWE OPTA AKT.-GES. March 9, 1954 [March 9, 1953], No. 6789/54. Class 39(1). An electron gun comprises a cathode 1, 2, a negatively biassed control electrode in the form of a cylinder 4 surrounding the cathode and a positively biassed apertured diaphragm the central part of which is arched towards the control electrode. The diaphragm may consist of two circular metal discs 6, 7, one of them dished, united by welding at the edges 5 and provided with apertures 8, 9. The latter may be staggered as in Fig. 4 to form an ion trap. In one modification, the dished disc is conical ; in another, the diaphragm is a solid lens-shaped member with a central aperture.
Patent GB-129948-A (GB)
Title: Improved Apparatus for Raising Spirit or other Liquids.
Inventor: WEBER LUCIEN
IPC: F02M37/02
Filed: 1919-03-18
Abstract: 129,948. Weber, L. March 18, 1919. Vacuum apparatus.-Consists of a vacuum-apparatus for raising petrol &c. from a reservoir and supplying it to a carburettor &c. at a lower level. A tank a is divided into upper and lower compartments by a diaphragm s in which is a valvebox t. Air is admitted to the lower compartment by a pipe 8, and from it the petrol passes to the carburettor by a pipe n. The petrol is supplied to the top of the upper compartment by a pipe p passing through the diaphragm and making an airtight joint therewith. A second pipe o passes similarly through the diaphragm to the top of the upper compartment, and through a small aperture 10 at the base of this pipe the upper compartment is exhausted. Under the influence of the vacuum petrol flows into the upper compartment and tends to raise the float 2. When the determined level has been reached, the float lifts the valve 5 to admit air whereupon the petrol flows into the lower compartment through the valve-box t in which there is a lift-valve u. When the float drops, the valve 5 closes and the upper compartment is again exhausted. In a modification, the tank is a casting and passages are cored in the walls to serve the purposes of the pipes o, p, 8.
Patent GB-869502-A (GB)
Title: Reactance oscillator-modulator
IPC: H03C3/22
Filed: 1960-02-26
Abstract: 869,502. Frequency modulation. COLLINS RADIO CO. Feb. 26, 1960 [April 7, 1959], No. 6856/60. Class 40(5) In a reactance oscillator-modulator comprising a transistor amplifier 20 having in its feedback path a tuned circuit including an R.F. inductor 25, and a reverse bias junction diode 21 constituting a capacitive element, the reverse bias is provided by the voltage V3 developed across a zener diode 22 and an audio-frequency modulating signal from source 23 is superimposed thereon. The feedback path is completed by an inductor 35 and capacitor 36 forming a series resonant circuit tuned to the centre frequency of the oscillator. The collector is biased by the potential drop across a resistor 31 connected with resistor 30 across the supply at 38. The circuit in which the inductor 25 has a high Q and low resistance, and in which the diode 22 has a near-zero temperature coefficient is said to be stable with a variation of transistor characteristics, and to be insensitive to loading.
Patent GB-556496-A (GB)
Title: Improvements in the manufacture of pigments
IPC: C09C1/34
Filed: 1942-05-20
Abstract: 556,496. Pigments. SLONIM, C. May 20, 1942, No. 6860. [Class 95] A method of preparing a pigment mixture of green chromium oxide and an extender, comprises precipitating chromic hydroxide from aqueous solution simultaneously with the extender or in an aqueous suspension thereof, separating the resulting solid material, and calcining it. Specified extenders are barium sulphate, calcium sulphate, silica, Kaolin and slate powder. The chromic hydroxide may be precipitated by adding an alkali to a solution of a chromic salt mixed with a suspension of the extender, or by reduction of a solution of a chromate, mixed with the suspension, e.g. by means of sodium sulphite, sodium sulphide or a solution of sodium hydroxide containing sulphur. Alternatively chromic hydroxide and an extender, e.g. barium sulphate can be precipitated simultaneously by interaction of solutions of barium chloride, sodium hydroxides and chromic sulphate. Examples are given. Specification 556,497 is referred to.
Patent GB-851902-A (GB)
Title: Protection of structures in sea water against foulding by marine growths
Inventor: VARVILL MARK
IPC: B63B59/04
Filed: 1958-03-04
Abstract: 851,902. Preventing incrustation. HUGHES & CO. Ltd., F. A. Dec. 12, 1958 [March 4, 1958], No. 6898/58. Class 123(1) The fouling of structures, especially ships' hulls, immersed in sea-water by marine growths is prevented by discharging against the underwater surface a growth deterrent consisting of an oily liquid such as kerosene or light diesel oil in which has been dissolved from 0À01 to 0À2% by weight of a tri-alkyl or tri-aryl tin compound. Specific examples of suitable compounds are triphenyl tin oxide or acetate and tributyl tin oxide or acetate. The deterrent is preferably suspended in a carrier gas, for example air or the exhaust gas from an I.C. engine, which is discharged through perforated pipes located beneath the hull &c., so that the gas bubbles rising over the submerged surface coat it with the deterrent.
Patent GB-179021-A (GB)
Title: Improvements in or relating to electric switches
IPC: H01H33/18
Filed: 1921-03-02
Abstract: 179,021. Coates, W. A., and Metropolitan-Vickers Electrical Co., Ltd., (Westinghouse Electric & Manufacturing Co.). March 2, 1921. Oil switches; sparking, preventing, and arcrupturing devices; contacts.-In switches having shunt contacts giving four series current breaks, the shunt contacts with their interconnections and the four arcs are arranged in the form of two helical turns of a solenoid, thereby producing a strong magnetic blow-out field. An oil switch has main contacts in the form of inverted U-shaped laminated brushes 1, 2 each with contacting surfaces 3, 4 which are secured by bolts 5 to supporting-members 6. The members 6 are secured to the lower ends of the terminal rods 7, 8 by means of divided sleeves 9 with clamping screws 10. The terminal rods 7, 8 are surrounded by insulating tubes 11, and are supported in inclined sleeves 14 secured in the cast-iron cover 12. Stay-rods 16 with ball-ended sockets 18 extend between the member 6 and adjustable plugs 19 in the cover 12. The movable bridge member 21, Fig. 3, has enlarged main contact projections 22 at its comers, between which extend diagonal webs 23 for attachment of the operating- rod 25. Auxiliary shunt contacts 31, 32, 33, 34 are mounted at the mid-points of the sides of the bridge member 21, being insulated therefrom and connected together in adjacent pairs by insulated leads 53. Two of the relatively fixed shunt contacts 41, 44 are secured on rods 45 sliding through channel brackets 46 secured to the members 6, springs 47 surrounding the rods tending to produce a downward motion which is limited bv split pins 48. The other pair of relatively fixed shunt contacts 42, 43 are similarly mounted in channel brackets 49 which are secured between a pair of insulating plates 28 which depend between the terminal rods 78 from angle brackets 29 secured to the cover 12. An insulated lead 52 joins the contacts 42, 43 which are completely insulated from the rest of the switch parts. The relatively movable shunt contacts are thus arranged to break contact with the relatively fixed shunt contacts only after the main contacts have separated. When this separation of the shunt contacts occurs the path of current through the shunt contacts, the four arcs and the interconnections form two complete convolutions of a solenoid, Fig. 4, thereby producing a strong blowout field at the contacts.
Patent GB-692895-A (GB)
Title: Hydraulic lifting ram for agricultural implements carried by a tractor
IPC: F15B9/10
Filed: 1951-03-22
Abstract: 692,895. Fluid-pressure servomotor control systems. MORGEN, A. L. A. March 22, 1951 [April 27, 1950], No. 6927/51. Class 135 A hydraulic ram for lifting an agricultural implement carried by a tractor comprises a piston moved in a cylinder by pressure liquid from a pump on the tractor and provided with a bore parallel with the cylinder axis, a channel opening at one end into the bore and at the other end at the pressure side of the piston, and a rod manually slidable in the bore either to block or open the channel and thereby regulate the position of the piston in the cylinder. Fluid entering at 12 in the end of a cylinder 1 acts on the piston 4 and escapes via the passage 7 controlled by the end of a rod 8 manually positioned in a bore 6 through the piston. The piston is connected to the implement through a linkage 5. Specifications 6315/04, [Class 122]. 8977/11, [Class 110(iii)], 293,758, [Class 135], 459,179, 502,726. 654,926 are referred to.
Patent GB-267563-A (GB)
Title: Improvements relating to rasps
IPC: B23D71/00
Filed: 1927-03-14
Abstract: 267,563. Vernaz, A. March 12, 1926, [Convention date]. Rasps.-A hollow rasp comprises a frame a of hollow semicircular form, on which is slidably fitted a blade c perforated with boles d through which the chips &c. may pass. The blade is made of thin metal, either flat or half round, and the perforations have their axis inclined to the blade the teeth thus formed being set to constitute cutting edges. Either the blade or the frame a may have its longitudinal edges shaped to form a groove to accommodate the longitudinal edges of the cooperating part. The frame a is carried by a handle b. The Specification as open to inspection under Sect. 91 (3) (a) states also that the holes d may be disposed in straight lines, chevrons, &c. This subjectmatter does not appear in the Specification as accepted.
Patent GB-651754-A (GB)
Title: Improvements in apparatus for cooking or heating syrups and like fluids
IPC: A23G3/04
Filed: 1948-03-08
Abstract: 651,754. Tubular heat exchangers NATIONAL EQUIPMENT CORPORATION. March 8, 1948, No. 7120. Convention date, Oct. 29, 1947. [Class 64(iii)] Apparatus for cooking or heating syrup or like fluids which includes a steam heated heating chamber 1 and at least two tubular coils 6, 7 concentrically disposed and supported in said chamber and having their upper ends connected through a manifold 12 to a single entrance conduit 15, at the top of the chamber, is characterized in that passages 16, 47 formed in the manifold member 12 for receiving the ends of the coils, converge inwardly towards the centre of the manifold and there communicate with each other and with a central passage through which the syrup or like fluid to be heated flows into the manifold and thence to the coils. The lower ends of the coils may be connected to a similar manifold 25 provided with an outlet pipe 23 for the heated syrup.
Patent GB-145134-A (GB)
Title: Improvements in automatic contactors or electrically operated switches and such likeelectrical devices
IPC: H01H50/04
Filed: 1919-03-22
Abstract: 145,134. Brooke, W., and Kerr, E. M. March 22, 1919. Electro-magnetic switches.-In order to allow of close assemblage of electro-magnetic contactors on a switchboard and at the same time permit of ready detachment of the movable member of each contactor, the pivot-pin b of the contact carrying armature d is mounted within a block a forming part of the fixed magnetic circuit of the contactor and removable from the main part c, so that, by detaching the block it may be taken away, together with the pivot and the armature, in a direction transverse to the switchboard. In the construction shown in Fig. 1, the detachable bracket which is formed with a projection fitting a channel c' in the magnet yoke is secured by a screw e the shank of which engages a circumferential groove b<1> in the spindle and fixes the spindle in the bracket. The spindle is threaded in position through one of the apertured lugs of the armature arm, through the black and through the other lug before the block is secured to the yoke. The block may comprise the whole of the outstanding portion of the magnet yoke, or it may be L-shaped and be secured to the yoke by screws parallel with the switchboard.
Patent GB-1450332-A (GB)
Title: Gripping devices
IPC: E21B19/08
Filed: 1974-02-19
Abstract: 1450332 Grlpper DRESSER INDUSTRIES Inc 19 Feb 1974 [12 March 1973] 7563/74 Heading B8H A gripping device 10 for use in lifting a section of pipe 23 comprises a body 19 having an opening 24 which receives the pipe section 23, a movable jaw comprising jaw block 37 and jaw inserts 40, 41 being engageable with the pipe section, and the body 19 is attachable to a rig (not shown) by means of an anchor shackle 11  to which a wire rope 12 is attached, the latter extending about a sheave 21 on the body 19 to a lever 16 pivotally mounted at 35 and having an arm 38 pivotally connected by a pin 39 to the jaw block 37. In operation of the device 10 the pipe section 23 is located in the opening 24 and latch member 25 is moved from its full line to its phantom line position to close the side of the opening 24. A rope 44 is then pulled, which causes elongation of a spring 18 connected between the body 19 and rope 12 thereby causing upward movement of the lever 16 relative to body 19 and thus the movement of inserts 40, 41 into engagement with the pipe section 23 which is gripped between the inserts 40, 41 and the opposite wall of the opening 24. The device 10 is then lifted and the weight of the pipe section 23 maintains the spring elongated, and on reaching a desired location the pipe section 23 is set down and due to the removal of its weight the spring 18 returns to its normal condition whereby the lever 16 moves downwardly and the jaw inserts 40, 41 move out of engagement with the pipe section 23. In a second embodiment of gripping device, Fig. 3 (not shown), the spring 18 is replaced by a spring (61) which is connected between a lever (57) and the body (54) of the device.
Patent GB-697219-A (GB)
Title: Ferromagnetic ceramic materials with hysteresis loops of rectangular shape
IPC: C04B35/01
Filed: 1952-03-25
Abstract: 697,219. Magnetic compositions. STEATITE RESEARCH CORPORATION. March 25, 1952 [Oct. 30, 1951], No. 7662/52. Drawings to Specifications. Class 38 (ii). A magnetic ferrite material suitable for use in computer circuits in that it has a substantially rectangular hysteresis loop, the ratio of remanence to saturation flux density being not less than 0.8, is made from 10-30 per cent of MgO, 5-40 per cent of MnO 2 , 50-70 per cent of Fe 2 O a , and up to 5 per cent each of MgF 2  and of the oxide of another heavy metal such as Zn, Nc, and Cu, and up to 4 per cent of a fluxing oxide such as silica, alumina, titania, or calcium oxide the percentages being by weight. The selected weights of the above materials are ground and mixed, a small amount of binder such as methyl cellulose and water may be added, and after being shaped by pressing or extruding the composition is fired in air at 2200-2400‹ F. Specification 671,788 is referred to.