US1042832A - Flexible stay-bolt for boilers. - Google Patents

Flexible stay-bolt for boilers. Download PDF

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Publication number
US1042832A
US1042832A US66550511A US1911665505A US1042832A US 1042832 A US1042832 A US 1042832A US 66550511 A US66550511 A US 66550511A US 1911665505 A US1911665505 A US 1911665505A US 1042832 A US1042832 A US 1042832A
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United States
Prior art keywords
bolt
bushing
cap
sleeve
head
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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
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US66550511A
Inventor
Benjamin E D Stafford
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Flannery Bolt Co
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Flannery Bolt Co
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Publication date
Application filed by Flannery Bolt Co filed Critical Flannery Bolt Co
Priority to US66550511A priority Critical patent/US1042832A/en
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Publication of US1042832A publication Critical patent/US1042832A/en
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Expired - Lifetime legal-status Critical Current

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    • 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
    • F16B37/00—Nuts or like thread-engaging members
    • F16B37/14—Cap nuts; Nut caps or bolt caps
    • 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

Definitions

  • Figure 1 is a view in elevation partly in'section showing the bolt applied to the. inner and outer sheets of a boiler
  • Fig. 2 is a view in plan.
  • 1 represents a bolt having a substantiallyspherical head 2 at one end and threaded at the opposite end, the head 2 being provided with a slot 3 for the engagement of a suitable driver.
  • the sleeve or bushing 5 Secured to the outer sheet 4 of the boiler, is the sleeve or bushing 5, threaded externally, and may be cylindrical, but is preferably slightly tapering externally, so that as it is screwed into the outer sheet 4, the wedging action produces an absolutely steam tight joint.
  • the inner end of this bushing has a bore 'or opening of greater diameter than the bolt 1, and. is made concave, as shown in Fig. 1, below the seat 6 within the sleeve or bushing on which the bolt head 2 rests.
  • the curvature of the inner surface ofthe bore of the sleeve below the seat is preferably in the segment of an oval as shown in dotted lines, which form is well adapted for loosening and breakingup incrustation by the deflection of the bolt.
  • the bushing 5 receives the head 2 of the bolt 1 and houses the same, and is provided internally'with the seat 6, formed preferably in the arc of a circle concentric with the head of the bolt, the curvatures of the inner surface of the sleeve or bushing above and below seat 6, permitting of a universal to which the bolt is connected.
  • the cavity within the sleeve or bushing 5 above the seat 6, is-of a size suflicient for the free-entrance of the head, and the outer end of said bushing has a pointed ridge, preferably in the shape of an inverted V on which the rim of' the copper or other soft metal cap 7 rests.
  • This cap maybe stamped or cast, and is made of copper, copper alloy or other; comparatively soft metal, so that when forced or compressed against the outer end of the bushing or sleeve 5, the latter will be forced into the softer metal cap, and the latter will conform itself to the harder metal seat,
  • the cap is concave on its inner face and .is sufliciently removed from the bolt head to afford clearance for the movement of the bolt due to expansion of the sheets, and is provided centrall on its outer surface with an angular, pre erably' hexagonal boss 8, adapted to be engaged by a wrench whereby the cap may be .turned on its seat, before it is fully clamped in place, to clean its bearing surface and the bearing surface of the bushing or sleeve.
  • This cap is also provided on its outer surface with an annular shoulder 9 adapted to be engaged by the lip 10 of the clamping nut 11.
  • This nut is threaded at its lower end to engage the external threads on the upper end of the bushing or sleeve, and is provided internally, intermediate its lower end and its overhangin lip 10, with an annular rib 12, which ums an abutment or bearing for the rimof the cap 7,. and prevents-the latter from spreading or crushing under the clamping action of the nut.
  • This nut overhangs the cap 7 within the plane of the clamping lip 10, but is removed from said cap so as to permit the latter to give or bulge under excessive pressure, but over movement of the head on its seat during 7 the expansion and contraction of the sheets packing thus dispensing with a separate gasket which is used to secure a steam tight joint.
  • a stay bolt structure comprising a bolt having a head, a sleeve or bushing having an internal seat for said head, a soft metal capforming a closure for the sleeve or bushing, and a nut for locking the cap to the bushing, as the same forms the subject matter of my pen-ding application No. 665,504 filed December 13th, 1911. 7
  • 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 inverted V-shaped upper end, a soft metal cap seated on said inverted Vshaped end, and a nutscrewed to the sleeve or bushing and provided With an annular lip resting on the rim of the cap, and With an annular rib adapted to form an abutment for the rim of the cap.
  • a stay bolt structure comprising a bolt having a head, a sleeve or bushing having an internal seat for said head, a soft metal cap having a centrally located external angular boss, the said cap being mounted on said sleeve or bushing and forming a closure for same, and a nut for locking the cap to the bushing.

Description

B. E. D. STAFFORD. FLEXIBLE STAY BOLT FORBOILERS.
APPLICATION FILED DEG.13, 1911.
Patented Oct. 29, 1912.
UNITED STAWENT 09 1 v BENJAMIN E. D. STAFFORD, OF PITTSBURGH, PENNSYLVANIA, ASSIGNO R T0 FLANNERY I BOLT COMPANY, OF PITTSBURGH, PENNSYLVANIA.
FLEXIBLE STAY-BOLT FOB, BOILERS.
Specification of lletters Patent.
Patented Oct. 29,19 2.
Application filed December 13, 1911. Serial No. 665,505. r
being to provide a simple and effective de tachable steam tight closure for the outer end of the bolt, and it consists in the details of construction as will be more fully described and pointed out in the claims.
In the accompanying drawings, Figure 1 is a view in elevation partly in'section showing the bolt applied to the. inner and outer sheets of a boiler, and Fig. 2 is a view in plan.
1 represents a bolt having a substantiallyspherical head 2 at one end and threaded at the opposite end, the head 2 being provided with a slot 3 for the engagement of a suitable driver.
Secured to the outer sheet 4 of the boiler, is the sleeve or bushing 5, threaded externally, and may be cylindrical, but is preferably slightly tapering externally, so that as it is screwed into the outer sheet 4, the wedging action produces an absolutely steam tight joint. The inner end of this bushing has a bore 'or opening of greater diameter than the bolt 1, and. is made concave, as shown in Fig. 1, below the seat 6 within the sleeve or bushing on which the bolt head 2 rests. v
The curvature of the inner surface ofthe bore of the sleeve below the seat, is preferably in the segment of an oval as shown in dotted lines, which form is well adapted for loosening and breakingup incrustation by the deflection of the bolt.
The bushing 5 receives the head 2 of the bolt 1 and houses the same, and is provided internally'with the seat 6, formed preferably in the arc of a circle concentric with the head of the bolt, the curvatures of the inner surface of the sleeve or bushing above and below seat 6, permitting of a universal to which the bolt is connected. The cavity within the sleeve or bushing 5 above the seat 6, is-of a size suflicient for the free-entrance of the head, and the outer end of said bushing has a pointed ridge, preferably in the shape of an inverted V on which the rim of' the copper or other soft metal cap 7 rests. This cap maybe stamped or cast, and is made of copper, copper alloy or other; comparatively soft metal, so that when forced or compressed against the outer end of the bushing or sleeve 5, the latter will be forced into the softer metal cap, and the latter will conform itself to the harder metal seat,
and thus form a steam tight joint.
The capis concave on its inner face and .is sufliciently removed from the bolt head to afford clearance for the movement of the bolt due to expansion of the sheets, and is provided centrall on its outer surface with an angular, pre erably' hexagonal boss 8, adapted to be engaged by a wrench whereby the cap may be .turned on its seat, before it is fully clamped in place, to clean its bearing surface and the bearing surface of the bushing or sleeve. This cap is also provided on its outer surface with an annular shoulder 9 adapted to be engaged by the lip 10 of the clamping nut 11. This nut is threaded at its lower end to engage the external threads on the upper end of the bushing or sleeve, and is provided internally, intermediate its lower end and its overhangin lip 10, with an annular rib 12, which ums an abutment or bearing for the rimof the cap 7,. and prevents-the latter from spreading or crushing under the clamping action of the nut. This nut overhangs the cap 7 within the plane of the clamping lip 10, but is removed from said cap so as to permit the latter to give or bulge under excessive pressure, but over movement of the head on its seat during 7 the expansion and contraction of the sheets packing thus dispensing with a separate gasket which is used to secure a steam tight joint.
By employing a cap of softer metal than the bushing and its nut, l expedite the handling of the parts and obtain a perfect fit between the parts Without the employment of gaskets or any other packing.
1 make no claim in this application to a stay bolt structure comprising a bolt having a head, a sleeve or bushing having an internal seat for said head, a soft metal capforming a closure for the sleeve or bushing, and a nut for locking the cap to the bushing, as the same forms the subject matter of my pen-ding application No. 665,504 filed December 13th, 1911. 7
It is evident that many slight changes might be resorted to in the relative arrangement of parts shown and described Without departing from the spirit and scope of the claims annexed. Hence I would have it understood that I do not Wish to confine myself except as required by the scope of said claims to the exact construction and ar- 11;angernent of parts shown and described,
ut, I
Having fully described my invention What oaaaaa I claim as new and desire to secure by LettersdPatent, is
' 1'. 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 inverted V-shaped upper end, a soft metal cap seated on said inverted Vshaped end, and a nutscrewed to the sleeve or bushing and provided With an annular lip resting on the rim of the cap, and With an annular rib adapted to form an abutment for the rim of the cap.
2. A stay bolt structure comprising a bolt having a head, a sleeve or bushing having an internal seat for said head, a soft metal cap having a centrally located external angular boss, the said cap being mounted on said sleeve or bushing and forming a closure for same, and a nut for locking the cap to the bushing.
In testimony whereof, I have signed this specification in the presence of two ,subscribing Witnesses.
BENJAMIN E. D. STAFFORD.
US66550511A 1911-12-13 1911-12-13 Flexible stay-bolt for boilers. Expired - Lifetime US1042832A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11030276B2 (en) 2013-12-16 2021-06-08 10X Genomics, Inc. Methods and apparatus for sorting data

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11030276B2 (en) 2013-12-16 2021-06-08 10X Genomics, Inc. Methods and apparatus for sorting data

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