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GB409677A - Improvements in helical springs for heavy duty - Google Patents

Improvements in helical springs for heavy duty

Info

Publication number
GB409677A
GB409677A GB2115332A GB2115332A GB409677A GB 409677 A GB409677 A GB 409677A GB 2115332 A GB2115332 A GB 2115332A GB 2115332 A GB2115332 A GB 2115332A GB 409677 A GB409677 A GB 409677A
Authority
GB
United Kingdom
Prior art keywords
helical springs
section
cross
rectangular
mean diameter
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB2115332A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LESLIE EYNON ADAMS
Original Assignee
LESLIE EYNON ADAMS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by LESLIE EYNON ADAMS filed Critical LESLIE EYNON ADAMS
Publication of GB409677A publication Critical patent/GB409677A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B17/00—Fire alarms; Alarms responsive to explosion
    • G08B17/10—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means
    • G08B17/103—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means using a light emitting and receiving device
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F1/00—Springs
    • F16F1/02—Springs made of steel or other material having low internal friction; Wound, torsion, leaf, cup, ring or the like springs, the material of the spring not being relevant
    • F16F1/04—Wound springs
    • F16F1/042—Wound springs characterised by the cross-section of the wire
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/47—Scattering, i.e. diffuse reflection
    • G01N21/49—Scattering, i.e. diffuse reflection within a body or fluid
    • G01N21/53—Scattering, i.e. diffuse reflection within a body or fluid within a flowing fluid, e.g. smoke
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/47—Scattering, i.e. diffuse reflection
    • G01N21/49—Scattering, i.e. diffuse reflection within a body or fluid
    • G01N21/53—Scattering, i.e. diffuse reflection within a body or fluid within a flowing fluid, e.g. smoke
    • G01N21/534—Scattering, i.e. diffuse reflection within a body or fluid within a flowing fluid, e.g. smoke by measuring transmission alone, i.e. determining opacity
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B17/00—Fire alarms; Alarms responsive to explosion
    • G08B17/10—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means
    • G08B17/11—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means using an ionisation chamber for detecting smoke or gas
    • G08B17/113—Constructional details
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S55/00—Gas separation
    • Y10S55/34—Indicator and controllers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/86493—Multi-way valve unit
    • Y10T137/86815—Multiple inlet with single outlet
    • Y10T137/86823—Rotary valve

Landscapes

  • Analytical Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • General Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Health & Medical Sciences (AREA)
  • Biochemistry (AREA)
  • Emergency Management (AREA)
  • Business, Economics & Management (AREA)
  • Mechanical Engineering (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Fire-Detection Mechanisms (AREA)
  • Optical Measuring Cells (AREA)
  • Springs (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)

Abstract

409,677. Helical springs. ADAMS, L. E., 29, Wellfield Road, Dial Stone Lane, Stockport, Cheshire. July 27, 1932, No. 21153. [Class 108 (iii).] Helical springs in which the finished cross-section of the material is either rectangular or elliptical and in which the major axis of the section of the material is perpendicular to the axis of the spring, are constructed from a bar, the ratio of the major to the minor axes of the crosssection of which lies within the range of the ordinates of the curves S, Figs. 2 and 3, and in which the value of the mean diameter of the spring divided by the square root of the cross-sectional area is given by the abscissa of the curve S, Figs. 2 and 3 when the cross-section of the finished material is rectangular and elliptical respectively, thus facilitating determination of the actual dimension of the mean diameter.
GB2115332A 1931-11-11 1932-07-27 Improvements in helical springs for heavy duty Expired GB409677A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US57433931 US2033466A (en) 1931-11-11 1931-11-11 Selective smoke detector

Publications (1)

Publication Number Publication Date
GB409677A true GB409677A (en) 1934-04-27

Family

ID=24295693

Family Applications (3)

Application Number Title Priority Date Filing Date
GB2115332A Expired GB409677A (en) 1931-11-11 1932-07-27 Improvements in helical springs for heavy duty
GB1633833A Expired GB399449A (en) 1931-11-11 1932-08-25 Improvements relating to installations for indicating the presence of suspended matter in fluids
GB2672033A Expired GB409577A (en) 1931-11-11 1933-04-21 Improvements in and relating to installations for detecting the presence of suspended matters in fluids

Family Applications After (2)

Application Number Title Priority Date Filing Date
GB1633833A Expired GB399449A (en) 1931-11-11 1932-08-25 Improvements relating to installations for indicating the presence of suspended matter in fluids
GB2672033A Expired GB409577A (en) 1931-11-11 1933-04-21 Improvements in and relating to installations for detecting the presence of suspended matters in fluids

Country Status (2)

Country Link
US (1) US2033466A (en)
GB (3) GB409677A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0143515A2 (en) * 1983-12-01 1985-06-05 Murata Hatsujo Co., Ltd. Coiled spring
US4655462A (en) * 1985-01-07 1987-04-07 Peter J. Balsells Canted coiled spring and seal
GB2257232A (en) * 1991-06-20 1993-01-06 Valeo A coil spring
CN106355811A (en) * 2016-07-22 2017-01-25 河南城建学院 Electrical fire monitoring system

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2572008A (en) * 1946-06-05 1951-10-23 C O Two Fire Equipment Co Smoke detector and signal for diesel locomotives
US2496333A (en) * 1947-01-14 1950-02-07 Nat Technical Lab Optical absorption cell
US2682613A (en) * 1950-08-03 1954-06-29 Specialties Dev Corp Unit for detecting suspended matter in fluids
US2712643A (en) * 1952-03-01 1955-07-05 Specialties Dev Corp Smoke detecting and similar systems
US2788408A (en) * 1954-09-10 1957-04-09 Boeing Co Pressure switches for wind tunnels
US2956435A (en) * 1957-01-29 1960-10-18 Gen Electric Condensation nuclei detector
US3222662A (en) * 1961-12-27 1965-12-07 Electronics Corp America Signalling apparatus incorporating a differential relay
US3262354A (en) * 1962-10-11 1966-07-26 Specialties Dev Corp Smoke detecting apparatus
US3383670A (en) * 1964-07-13 1968-05-14 Gordon A. Roberts Smoke and heat detection unit
IL27293A (en) * 1966-03-10 1971-03-24 Pyrotector Inc Particle detector
US3453861A (en) * 1967-04-25 1969-07-08 Us Navy Square wave fluid pressure generator
DE2636273C3 (en) * 1976-08-12 1980-02-07 Ipsen Industries International Gmbh, 4190 Kleve Method for controlling carburization of parts in a vacuum furnace
US4160914A (en) * 1977-12-16 1979-07-10 Monitek, Inc. Apparatus for measuring of particulate scattering in fluids
US5018319A (en) * 1989-03-13 1991-05-28 Pauli & Griffin Pneumatic tube selector mechanism
GB2243475B (en) * 1990-04-26 1993-12-01 David Theodore Nels Williamson Improvements to gas and smoke alarm systems
DE102009011846B4 (en) * 2009-03-05 2015-07-30 MaxDeTec AG Analytical methods and devices for fluids

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0143515A2 (en) * 1983-12-01 1985-06-05 Murata Hatsujo Co., Ltd. Coiled spring
EP0143515A3 (en) * 1983-12-01 1985-09-25 Murata Hatsujo Co., Ltd. Coiled spring
US4655462A (en) * 1985-01-07 1987-04-07 Peter J. Balsells Canted coiled spring and seal
GB2257232A (en) * 1991-06-20 1993-01-06 Valeo A coil spring
GB2257232B (en) * 1991-06-20 1995-06-14 Valeo A coil spring,in particular for a torsion damper
CN106355811A (en) * 2016-07-22 2017-01-25 河南城建学院 Electrical fire monitoring system

Also Published As

Publication number Publication date
GB409577A (en) 1934-05-03
US2033466A (en) 1936-03-10
GB399449A (en) 1933-10-05

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