US1042833A - Stay-bolt for boilers. - Google Patents

Stay-bolt for boilers. Download PDF

Info

Publication number
US1042833A
US1042833A US66550611A US1911665506A US1042833A US 1042833 A US1042833 A US 1042833A US 66550611 A US66550611 A US 66550611A US 1911665506 A US1911665506 A US 1911665506A US 1042833 A US1042833 A US 1042833A
Authority
US
United States
Prior art keywords
bushing
bolt
cap
seat
sleeve
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 - Lifetime
Application number
US66550611A
Inventor
Benjamin E D Stafford
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.)
Flannery Bolt Co
Original Assignee
Flannery Bolt Co
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 Flannery Bolt Co filed Critical Flannery Bolt Co
Priority to US66550611A priority Critical patent/US1042833A/en
Application granted granted Critical
Publication of US1042833A publication Critical patent/US1042833A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • 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
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B2/00—Friction-grip releasable fastenings
    • F16B2/02—Clamps, i.e. with gripping action effected by positive means other than the inherent resistance to deformation of the material of the fastening
    • F16B2/14—Clamps, i.e. with gripping action effected by positive means other than the inherent resistance to deformation of the material of the fastening using wedges
    • 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
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B5/00—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them
    • F16B5/02—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of fastening members using screw-thread
    • F16B5/0241—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of fastening members using screw-thread with the possibility for the connection to absorb deformation, e.g. thermal or vibrational
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B7/00—Steam boilers of furnace-tube type, i.e. the combustion of fuel being performed inside one or more furnace tubes built-in in the boiler body
    • F22B7/16—Component parts thereof; Accessories therefor, e.g. stay-bolt connections
    • 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
    • Y10T403/00—Joints and connections
    • Y10T403/32—Articulated members
    • Y10T403/32114—Articulated members including static joint
    • Y10T403/32196—Articulate joint is ball and socket
    • Y10T403/32204—Articulate joint is ball and socket with threaded joint
    • 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
    • Y10T403/00—Joints and connections
    • Y10T403/38—Laterally related rods independently joined to transverse surface
    • 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
    • Y10T403/00—Joints and connections
    • Y10T403/71—Rod side to plate or side
    • Y10T403/7129—Laterally spaced rods

Definitions

  • My invention relates to an improvement in stay bolts for boilers, and it consists in the details of construction as will be mort fully described and pointed out in the claims.
  • Figure l is a view partly in section and partly in elevation, showing the bolt applied to the inner and outeri sheets of a boiler
  • Fig. 2 is a view'in plan of the same.
  • l represents the bolt provided with a head 2, the portion thereof which yrests on the seat 3 of the sleeve or bushing a, being concave as at 5, while the portion 6 thereof'- above the concave bearing portion is convea, and preferably the segment of a sphere the extreme top of the head being in the form of an angular boss 7 adapted tol be engaged by a wrench.
  • the sleeve or bushing Ll Secured within the outer sheet 8 of the boiler, is the sleeve or bushing Ll, threaded ex-A ternally for engagement wit-h said outer sheet' 8and preferably made slightly tapering so as to form a steam tight joint.
  • Thebore of the bushing or sleeve 4 below the seat 3, is con-j veX and flares outwardly from the seat 3 to its lower end, so as to provideffor the up and dislodging incrustation which forms thereon.
  • the sleeve or bushing is provided above its Aconvex seat 3, with an annular seat or bearing 9, for the V-shaped or knife blade edge of the soft metal cap 10, which latter rests thereon and forms a housing for the head of the bolt and a closure for the sleeve or bushing.
  • the cap may.
  • the sleeve or bushing is at right anglesto and at the outer edge of the seat or bearing 9, which shoulder forms an abutment for the lower end of the cap and revents the latter from expanding or compressingaction of the nut 13.
  • the upper end of the sleeve Aor bushing 4c is threaded internally to receive the lower end vof the externally threaded nut 13, which lat-ter has an annular shoulder lil adapted to rest. on upper dat surface l5 of the rim ofthe cap. This shoulder Mis in the vertical plane of the seator bearing 9 on the bushing, hence as the compressive strains are in al vertical plane, there is no stra-in tending to collapse the cap while under compression.
  • the lower end of the nut extends down adjacent the outer side of the rim of the cap, and assists the shoulder 12 in preventing .any undue out-ward expanthenut overhangs the cap and protects the ing due to contact with the bolt when the of the inner sheet. rlhe boss 11 on the cap projects through and beyond the nut so as to be engaged by a wrench after the parts have obeen assembled.
  • the cap 10 not only forms a closure for the bushing, or sleeve, but being of softer metal than the bushing and the nut, serves as a packing, thus dispensing with they use of a gasket or other packing, which in many forms of' bolts are necessary in order to secure a steam tight joint.
  • a stay bolt structure comprising a. bolt having a head, a sleeve or bushing having an internal seatfor said head, a soft metal cap forming a closure for'the sleeve or bushing and a nut for locking the cap to the bushing, asthe same forms the subject mat-ter of lar, preferably rectangular boss l1, to be same against fracture or excessive stretch- ⁇ head of the bolt sufficiently to permit of the also provided with anannular shoulder 12,
  • a stay bolt structure comprising a bolt having a head, a sleeve or bushing having an internal seat for said head and also provided with an annular seat or bearing, and with an annular shoulder at the outer edge of said seat, a cap resting on said seat and supported laterally by said shoulder, and a nut having external threads engaging internal threads on the upper end of the sleeve or bushing and provided with an internal shoulder which bears against the top surface of the rim of the cap.
  • a stay bolt struct-ure comprising a bolt having a head, a sleeve or bushing having an internal seat for said head, and also pro-v vided with an annular shoulder at the outer edge of said seat, a soft metal cap having a Loaaase ll-shaped lower end resting on said seat and sustained laterally by said shoulder, and a nut having'external threads engaging internal threads on the upper end of the sleeve or bushing and provided with an interna-l shoulder which bears against the top surface of the rim of the cap, the said nut overhanging the rim-of said cap.
  • a stay bolt structure comprisino a bolt having a head the bearing surface of which is concave and the part thereof Vabove its bearings surface convex, a sleeve or bushing having a convex seat on which the concave surface of the bolt head rests, a removable cap resting on a seat on the bushing and forming a closure for the latter, and a nut y 'BENJAMIN E. D. STAFFURD.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Connection Of Plates (AREA)

Description

B. E. D. STAFFORD. STAY BOLT FOR BOILERS.
APPLloATIoN FILED DEG.13, 1911.
L. Patented 0@s.29,1912.
'MAW/ENT@ 6706;
narrany s'rarerarnnr orari it;
BENJAMIN E. D. STAFFORD, 0F PITTSBURGH, PENNSYLVANIA, ASSIGNOR TO FLLNNERY BOLT COMPANY, OF PITTSBURGH, PENNSYLVANIA.
' STAY-Bom ron. BorLEns.
LMZES.
Specification of Letters Patent.
' Patented (het. ZQWLZ.
T0 all whom t may concern Be it known that l, BENJAMIN E. D. Snrrom), of Pittsburgh, in the county of Allegheny and State of Pennsylvania, have invented certain new and useful Improvements in Stay-Bolts for Boilers and I do hereby declare the following to be a full, clear, and exact description ofthe invention, such as will enable others skilled in the art to which it appertains to make and use the same.
My invention relates to an improvement in stay bolts for boilers, and it consists in the details of construction as will be mort fully described and pointed out in the claims.
ln the accompanying drawings, Figure l is a view partly in section and partly in elevation, showing the bolt applied to the inner and outeri sheets of a boiler, and Fig. 2 is a view'in plan of the same.
l represents the bolt provided with a head 2, the portion thereof which yrests on the seat 3 of the sleeve or bushing a, being concave as at 5, while the portion 6 thereof'- above the concave bearing portion is convea, and preferably the segment of a sphere the extreme top of the head being in the form of an angular boss 7 adapted tol be engaged by a wrench.
Secured within the outer sheet 8 of the boiler, is the sleeve or bushing Ll, threaded ex-A ternally for engagement wit-h said outer sheet' 8and preferably made slightly tapering so as to form a steam tight joint. Thebore of the bushing or sleeve 4 below the seat 3, is con-j veX and flares outwardly from the seat 3 to its lower end, so as to provideffor the up and dislodging incrustation which forms thereon. The sleeve or bushing is provided above its Aconvex seat 3, with an annular seat or bearing 9, for the V-shaped or knife blade edge of the soft metal cap 10, which latter rests thereon and forms a housing for the head of the bolt and a closure for the sleeve or bushing. The cap may. be stamped or cast, and is made of copper or copper alloy or other comparatively soft metal, so that when clamped against its seat vwithin the sleeve or bushing 4, the knife blade edge of the cap will flatten out and form a perfect steam tight joint.l rlhe cap is concave on its inner face and is removed from the free movement of the latter,.and is provided centrally on its outer surface with an anguengaged by a wrench whereby the cap may be turned on its seat, before it is fully clamped in place, to clean its bearing sur-l face and also clean the seat or bearing 9 on the-bushing. The sleeve or bushing is at right anglesto and at the outer edge of the seat or bearing 9, which shoulder forms an abutment for the lower end of the cap and revents the latter from expanding or compressingaction of the nut 13. The upper end of the sleeve Aor bushing 4c is threaded internally to receive the lower end vof the externally threaded nut 13, which lat-ter has an annular shoulder lil adapted to rest. on upper dat surface l5 of the rim ofthe cap. This shoulder Mis in the vertical plane of the seator bearing 9 on the bushing, hence as the compressive strains are in al vertical plane, there is no stra-in tending to collapse the cap while under compression. The lower end of the nut extends down adjacent the outer side of the rim of the cap, and assists the shoulder 12 in preventing .any undue out-ward expanthenut overhangs the cap and protects the ing due to contact with the bolt when the of the inner sheet. rlhe boss 11 on the cap projects through and beyond the nut so as to be engaged by a wrench after the parts have obeen assembled.
- The cap 10 not only forms a closure for the bushing, or sleeve, but being of softer metal than the bushing and the nut, serves as a packing, thus dispensing with they use of a gasket or other packing, which in many forms of' bolts are necessary in order to secure a steam tight joint.
l make no claim in this application toa stay bolt structure comprising a. bolt having a head, a sleeve or bushing having an internal seatfor said head, a soft metal cap forming a closure for'the sleeve or bushing and a nut for locking the cap to the bushing, asthe same forms the subject mat-ter of lar, preferably rectangular boss l1, to be same against fracture or excessive stretch-` head of the bolt sufficiently to permit of the also provided with anannular shoulder 12,
bulging outwardly under the crushing or sion of the rim, while the upper portion of latter is forced outwardly by the expansion i my pending application No. 665,504 filed December 13th 1911.
lt is ,evident that many slight changes might be resorted to in the relative arrangement of parts shown and described withoutl departing from the spirit and scope of the claims annexed. Hence l would have it understood that l do not wish to confine rnyself 'except as required by the scope of said claims to the exact, construction and arrangement of parts shown and described, but
Having fully described my invention what I claim as new and desire to secure by Letters-Patent, is
l. A stay bolt structure comprising a bolt having a head, a sleeve or bushing having an internal seat for said head and also provided with an annular seat or bearing, and with an annular shoulder at the outer edge of said seat, a cap resting on said seat and supported laterally by said shoulder, and a nut having external threads engaging internal threads on the upper end of the sleeve or bushing and provided with an internal shoulder which bears against the top surface of the rim of the cap.
2. A stay bolt struct-ure comprising a bolt having a head, a sleeve or bushing having an internal seat for said head, and also pro-v vided with an annular shoulder at the outer edge of said seat, a soft metal cap having a Loaaase ll-shaped lower end resting on said seat and sustained laterally by said shoulder, and a nut having'external threads engaging internal threads on the upper end of the sleeve or bushing and provided with an interna-l shoulder which bears against the top surface of the rim of the cap, the said nut overhanging the rim-of said cap.
3. A stay bolt structure comprisino a bolt having a head the bearing surface of which is concave and the part thereof Vabove its bearings surface convex, a sleeve or bushing having a convex seat on which the concave surface of the bolt head rests, a removable cap resting on a seat on the bushing and forming a closure for the latter, and a nut y 'BENJAMIN E. D. STAFFURD.
Witnesses:
EDWIN S. RYoE, WM. L. MCNABB.
US66550611A 1911-12-13 1911-12-13 Stay-bolt for boilers. Expired - Lifetime US1042833A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US66550611A US1042833A (en) 1911-12-13 1911-12-13 Stay-bolt for boilers.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US66550611A US1042833A (en) 1911-12-13 1911-12-13 Stay-bolt for boilers.

Publications (1)

Publication Number Publication Date
US1042833A true US1042833A (en) 1912-10-29

Family

ID=3111107

Family Applications (1)

Application Number Title Priority Date Filing Date
US66550611A Expired - Lifetime US1042833A (en) 1911-12-13 1911-12-13 Stay-bolt for boilers.

Country Status (1)

Country Link
US (1) US1042833A (en)

Similar Documents

Publication Publication Date Title
US1714690A (en) Valve
US1042832A (en) Flexible stay-bolt for boilers.
US1042831A (en) Flexible stay-bolt for boilers.
US1072315A (en) Self-adjusting stay-bolt.
US1498019A (en) Stay-bolt structure for boilers
US1798491A (en) Washout plug
US630047A (en) Water-gage gasket.
US1400531A (en) Staybolt structure
US564812A (en) Safety-valve
US1264570A (en) Flexible stay-bolt connection for boilers.
US1298320A (en) Stay-bolt structure.
US1295882A (en) Stay-bolt structure.
US1216622A (en) Stay-bolt structure.
US999898A (en) Flexible stay-bolt for boilers.
US2161849A (en) Water level sight gauge for boilers
US1364149A (en) Staybolt structure
US1507841A (en) Stay-bolt structure
US1298306A (en) Stay-bolt structure.
US1293371A (en) Stay-bolt structure.
US1469688A (en) Stay bolt for steam boilers
US1788365A (en) Fluid-tight coupling
US1025354A (en) Boiler-gage connection.
US2329411A (en) Header plug
US1670764A (en) Relief valve for kitchen boilers and the like
US563371A (en) Edward e