专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

21. 发明专利

DE1498354B1 未知
公开(公告)号：DE1498354B1
公开(公告)日：1970-03-12
申请号：DE1498354
申请日：1965-11-13
申请人： HOLDEN JOHN LEONARD , HOLDEN PHILIP JOHN
发明人： LEONARD HOLDEN JOHN , JOHN HOLDEN PHILIP
IPC分类号： G01F23/04

22. 发明专利

GB947857A Improvements relating to electrical hygrometers 未知
公开(公告)号：GB947857A
公开(公告)日：1964-01-29
申请号：GB2142359
申请日：1959-06-23
申请人： JOHN LEONARD SHAW
IPC分类号： G01N27/22
摘要： 947,857. Measuring electrically. J. L. SHAW. June 21, 1960 [ June 23, 1959], No. 21423/59. Heading G1N. A humidity sensitive capacitor comprises a metal base provided with an insulating surface layer having pores or capillaries extending part way through from its outer surface and filled with an aqueous solution of a hygroscopic substance, the layer being covered with a water vapour permeable conducting layer. In the preferred method of manufacture of the element an aluminium wire is anodised to form a surface layer having pores, this layer is covered, e.g. by graphite or by vacuum deposition with a layer of gold, the hygroscopic solution being painted over the anodised layer, or alternatively over the conducting layer if the layer is water permeable. The hygroscopic solution may be lithium chloride, calcium chloride, or chromium oxide. The element may be connected in an A.C. bridge circuit. Acccording to the Provisional Specification the device is heated before use in a very dry atmosphere or may be heated in situ.

23. 发明专利

GB876292A Improvements in or relating to electric signal generators 未知
公开(公告)号：GB876292A
公开(公告)日：1961-08-30
申请号：GB213158
申请日：1958-01-22
申请人： JOHN LEONARD DOUCE AND JOHN CL
IPC分类号： H03B29/00
摘要： 876,292. Generating random-noise signals. DOUCE, J. L., and WEST, J. C. Jan. 15, 1959 [Jan. 22, 1958], No. 2131/58. Class 40(5) Relates to a generator for producing randomnoise signals in a frequency range extending from zero to a few cycles per second for testing servomechanisms &c. As shown a thyratron 1 surrounded by a permanent magnet 2 generates random noise over a range of 100 to 1,000 cycles per second which is amplified by the pentode 9 and supplied via a cathode-follower 19 to a high pass filter 24, 25, 27, 28. The output of the high pass filter is supplied via a cathode-follower 26 to a low pass filter 30, 31, 33, 34, and the two filters together constitute a band pass filter with a mean pass frequency of about 230 c/s. and a two to one frequency ratio between the upper and lower pass frequency limits. The resultant signals are supplied via a cathode-follower 32 to a pentode amplifier 36 whose output is supplied through a cathode-follower 44 to diode clippers 48, 49 and by this means the frequency spectrum is extended down to zero frequency. The output of the clipping circuit is fed via a cathode follower 56 to a low-pass filter 58 to 64 which removes all the signal components above about 30 c/s. and the output from the filter is fed through a cathode follower 65 to the output terminal 70.

24. 发明专利

GB749811A Improvements in fumigating devices 未知
公开(公告)号：GB749811A
公开(公告)日：1956-05-30
申请号：GB2302550
申请日：1950-09-19
申请人： MURPHY CHEMICAL LTD , JOHN LEONARD WALPOLE
IPC分类号： A01M1/20
摘要： 749,811. Fumigating devices; insecticidal compositions. MURPHY CHEMICAL CO., Ltd., and WALPOLE, J. L. Sept. 13, 1951 [Sept. 19, 1950], No. 23025/50. Class 81(1). A fumigating device comprises, in one modi. fication, a container of paper, fabric or other porous material, impregnated with pot. assium nitrate for ex. ample, to render it partially self-combustible, completely en. closing a mixture of a " partially self-combustible composition and a vaporisable heat-controlling substance, and a removable outer envelope of moisture resistant flexible material. Alternatively the outer envelope may be dispensed with if the " partially self-combustible " material forming the container is also a moisture resistant material. " Partially self-combustible " denotes that the material or composition concerned contains molecular or added oxygen in amount sufficient for it to burn slowly in ambient air but insufficient to burn in the absence of air. Figs. 1 and 2 respectively show the inner container and the outer moisture resistant envelope. The latter may be made of wax-or bitumen-impregnated paper or fabric, cellulose derivatives, synthetic resins, metal foil or a metal foil-paper composite sheet. The inner container may contain a length of ignition fuze 6 embedded therein, and the top may be folded and crimped at 9 and the flap 8 provided with a stapled ignition fuze 10. Alternatively a container and lid may be made of moisture resistant partially selfcombustible material such as a synthetic resin or cellulose derivative. The partially selfcombustible composition comprises a mixture of a combustible material for example, a cellulosic material such as saw dust or wood flour or a cellulose derivative such as the acetate and an oxygen yielding substance such as sodium, potassium or barium nitrates or potassium or barium chlorate. An absorbent material such as china clay or diatomaceous earth may be incorporated. The composition must be such that the heat generated on combustion will be sufficient to vaporize the pesticide but insufficient to decompose it.. Pesticides exemplified are insectidal polyphosphate or thiophosphate esters such as tetraethyl pyrophosphate, hexa- . ethyl tetraphosphate and diethyl p-nitrophenyl thiophosphate, or nicotine, pyrethrum, organo mercury compounds such as mercury phenyl acetate or mercury salicylate, or bis- (bis dimethylamino-phosphorous) anhydride. Two or more different pesticides may be employed together, or two different pesticides may be incorporated in separate porous containers enclosed in a common moisture-resistant envelope.

25. 发明专利

GB723968A An electrically maintained pendulum driven by gravitational impulses from a weight 未知
公开(公告)号：GB723968A
公开(公告)日：1955-02-16
申请号：GB792851
申请日：1951-04-05
申请人： JOHN LEONARD WOOLDRIDGE
IPC分类号： G04C3/02
摘要： 723,968. Clocks. WOOLDRIDGE, J. L. April 4, 1952 [April 5, 1951], No. 7928/51. Class 139. A pendulum is kept in oscillation by the repeated application, once per swing, of a vertical force derived from the weight of a piece of metal which during the application of the force is carried by two conducting projections on the pendulum from a higher position to a lower position in which it is received by two projections on a lever controlled by an electromagnet, the circuit of which includes the two conducting projections and the weight. The pendulum A, Figs. 1 and 2 is suspended from a support 1 by two strips 2a to each of which a projection 2 is fixed as shown. The projections 2 are electrically connected to an electromagnet 7 the armature of which is connected by a linkage 6 to a lever 4 which passes between the strips 2a and carries vertical projections 9. A weighted conducting metal strip 5 normally rests on the projections 9. When the pendulum approaches the end of its swing to the left, Fig. 1, the projections 2 engage the strip 5 and lift it from the projections 9. The conducting strip 5 bridges the projections 2 to complete the circuit to the electromagnet 7 which is energized to rock its armature whereupon contacts 8 are closed to send impulses to indicating mechanism and to lower the lever 4 and its projections 9 through the linkage 6. When the pendulum swings to the right it is accelerated by the weighted strip 5 until the strip again rests on the projections 9 when the circuit to the electromagnet 7 is interrupted and the armature restores the lever 4 to its initial "high" position.

26. 发明专利

GB715812A Improvements in fumigating devices 未知
公开(公告)号：GB715812A
公开(公告)日：1954-09-22
申请号：GB2101550
申请日：1950-08-24
申请人： MURPHY CHEMICAL LTD , JOHN LEONARD WALPOLE
IPC分类号： A01M1/20 , A01M13/00
摘要： 715,812. Fumigating devices. MURPHY CHEMICAL CO., Ltd., and WALPOLE, J. L. Sept. 27, 1951 [Aug. 24, 1950], No. 21015/50. Class 81(1) A fumigating device comprises a canister 5' containing a solid self-combustible composition 6 and a completely closed receptacle 11. containing a liquid vaporizable pest-controlling substance absorbed in an inert absorbent material which is located outside the said composition on a perforated baffle 8 and which is wholly or partially destructible by the heat of combustion of the said composition to release the pest-controlling substance. In a modification (not shown) the receptacle 11 rests on a support which is spaced from the perforated baffle and self-combustible composition. The receptacle may be of a material such as nitrocellulose, cellulose acetate, gelatine or glass which is fusible or combustible. Suitable liquid pestcontrolling substances referred to are tetraethyl pyrophosphate, hexaethyl tetraphosphate, diethyl para-nitrophenyl monothiophosphate, mixtures of diethyl and dimethyl para-nitrophenyl monothiophosphate, #-butoxy-# 1 -thiocyano-diethyl ether, 1:2:4:5:6:7:8:8-octachloro-4 : 7-methano- 3a : 4:7 : 7a-tetra-hydroindene, nicotine, pyrethrum and bis-(bis-dimethylamino)- phosphorous anhydride. A vaporizable substance, for example naphthalene, may be incorporated in the self-combustible composition. Solid vaporizable pest-controlling substances such as azobenzene, benzene hexachloride or DDT may also be incorporated. The self-combustible composition comprises a mixture of a combustible material, e.g. sucrose, lactose, starch, mannitol, sorbitol or thiourea, with an oxygenyielding substance, e.g. KClO 3 NaClO 3 , KNO 3 , NaNO 3 . A modifier such as urea may be added. Specification 621,894 is referred to.

27. 发明专利

GB708281A Improvements in or relating to the production of self-locking or "stiff" nuts 未知
公开(公告)号：GB708281A
公开(公告)日：1954-05-05
申请号：GB1559451
申请日：1951-07-02
申请人： PHILIDAS LTD , JOHN LEONARD KING
IPC分类号： B21K1/70
摘要： 708,281. Making self-locking nuts: angular bending. PHILIDAS, Ltd., and KING, J. L. Sept. 3, 1952 [July 2, 1951], No. 15594/51. Classes 83 (2) and 83 (4) A machine for use in the production of selflocking nuts of the kind having slots transverse to the axis of the nut which are partly closed before the nut is used, comprises a fed shoot along which slotted nuts N are fed to loaded, driven rolls 1, 2, one having a flat or channelled periphery to suit the bases of the nuts whilst the other roller has a peripheral V or like groove which partly closes the slots in the nuts when the latter pass between the rolls. A thin guide plate 10 adjustable for height, engages a slot in each nut to position it for passing between the rolls. Adjustably positioned side rails 9 and a top guide bar 12 engage the nuts.

28. 发明专利

GB707819A Improvements in or relating to nuts of the self-locking or "stiff" type 未知
公开(公告)号：GB707819A
公开(公告)日：1954-04-21
申请号：GB1544451
申请日：1951-06-29
申请人： PHILIDAS LTD , JOHN LEONARD KING
IPC分类号： F16B37/04 , F16B39/286
摘要： 707,819. Two-part couplings. PHILIDAS, Ltd., and KING, J. L. June 24, 1952 [June 29, 1951], No. 7.5444/51. Class 38 (1) [Also in Group XXV] An electric coupling for mounting on a panel facia board &c. comprises a nut 2 of resilient insulating plastic material, slit and deformed at 3 to render it self-locking and slotted to form two or more sections 9 at a non-circular part of the nut. The nut is sprung into a correspondingly shaped hole in the panel 11 where it is retained by flanges 10. A metal bush 12 is screwed into the nut to receive a coupling pin.

29. 发明专利

GB647990A Improvements in or relating to apparatus for use in determining the moisture contentof textile materials 未知
公开(公告)号：GB647990A
公开(公告)日：1950-12-28
申请号：GB2875148
申请日：1948-11-05
申请人： JOHN LEONARD SHAW
IPC分类号： G01N27/22
摘要： 647,990. Determining physical qualities of materials. SHAW, J. L. Nov. 5, 1948, No. 28751. [Class 37] Apparatus for determining the moisture content of textile material comprises a condenser cell consisting of an open-topped rectangular box, whose larger sides are metal plates 1, 2, covered on the inside and outside with a sheet of insulating material 3, 5, 6, 7, the remaining sides and the base being of insulating material. The box is packed with a known weight of the material to be tested, using the tool shown in Fig. 2, and the impedance of the condenser box is determined by the circuit of Fig. 3, wherein A, C is applied at F, G across the condenser box A in series with a fixed resistance C, and the voltage across the resistance C is measured. The Provisional Specification also refers to the use of a cylindrical condenser with a central electrode.

30. 发明专利

GB638580A Improvements in the anti-shrinking treatment of animal fibres 未知
公开(公告)号：GB638580A
公开(公告)日：1950-06-14
申请号：GB2269347
申请日：1947-08-15
申请人： STEVENSONS DYERS LTD , JOHN LEONARD RAYNES , FRANCIS MALCOLM STEVENSON
IPC分类号： D06M11/50
摘要： Textile materials made of or containing wool or other animal fibre are treated with a dilute aqueous solution of a permanganate at a temperature not above 60 DEG C. and a pH between 5 and 10, this treatment being preceded or followed by treatment with a solution containing 0.5-10 per cent by weight of a sulphur-containing reducing agent at a pH between 5 and 10.5. The tendency of the materials to shrink when washed is thus reduced. The permanganate may be an alkali or alkaline-earth permanganate and the reducing agent may be a sulphite, bisulphite, metabisulphite or hydrosulphite of an alkali metal, calcium, magnesium or ammonium. The permanganate solution may be buffered by addition of zinc sulphate. The materials treated may be loose wool, slubbing, yarn, fabrics or garments, in the oil or scoured state, and the animal fibre may be mixed with cellulosic fibres such as cotton or rayon, or rubberised threads. The treatment may be applied before or after dyeing. In an example, wool yarn is treated at atmospheric temperature with a dilute solution of potassium permanganate containing zinc sulphate and a wetting agent, e.g. a sulphonated fatty alcohol or an ethylene-oxide condensation product, and the material is then drained and treated with a 2 per cent solution of sodium bisulphite at 40 DEG C. Specification 569,730 is referred to.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式