US1019595A - Cotter-pin. - Google Patents

Cotter-pin. Download PDF

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Publication number
US1019595A
US1019595A US66716111A US1911667161A US1019595A US 1019595 A US1019595 A US 1019595A US 66716111 A US66716111 A US 66716111A US 1911667161 A US1911667161 A US 1911667161A US 1019595 A US1019595 A US 1019595A
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United States
Prior art keywords
pin
limb
tip
cotter
driven
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Expired - Lifetime
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US66716111A
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Andrew C Campbell
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Individual
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Priority to US66716111A priority Critical patent/US1019595A/en
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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
    • F16B21/00—Means for preventing relative axial movement of a pin, spigot, shaft or the like and a member surrounding it; Stud-and-socket releasable fastenings
    • F16B21/10—Means for preventing relative axial movement of a pin, spigot, shaft or the like and a member surrounding it; Stud-and-socket releasable fastenings by separate parts
    • F16B21/12—Means for preventing relative axial movement of a pin, spigot, shaft or the like and a member surrounding it; Stud-and-socket releasable fastenings by separate parts with locking-pins or split-pins thrust into holes
    • 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
    • Y10S411/00—Expanded, threaded, driven, headed, tool-deformed, or locked-threaded fastener
    • Y10S411/923—Nail, spike or tack having specific head structure

Definitions

  • Thisy invention relates to those devices which are designed to be driven through holes for the purpose of preventing the re- 4moval of the parts through which they are driven, or pieces placed upon the parts through which they are driven.
  • the object of the invention is to rovide a Cotter-pin which is easy to manu acture, simple to use, and which is so constructed that when it is driven into a 'hole it automatically .loc-ks itself in place.
  • a length of the usual wire is doubled upon itself so as to form an eccentric eye at one vend and have one limb longer than the other, ⁇ and the tip of the long limb is bent at an angle across the-tip of the short limb in-such manner that when the pin is driven into place, the short limb will be forced forward along the long limb, causing its tip to be driven past the bent tip of the long limb and thus spread the free ends of the limbs to a ⁇ diameter that is greater than' the diameter. of. the hole -through which they were driven.
  • FIG. l of the accompanying drawings shows a side view of a Cotter-pin which embodies the invention:
  • Fi 2 is a view looking toward the tip end o ⁇ the pin in its normal condition.
  • Fig. 3 shows a pin in its j normal state thrustinto a perforation in a piece of metal.
  • Figa-4 shows a view of the same'afterthe in has been fully driven in and the short llmb forced forward so as to separate the free ends of the limbs and lock the pin in place.
  • These pins may be made ona suitable automatic wire forming machine of lengths cut froma' coil of half round stock of any f diameter and the required length. The wire isdoubled u on itself 4to form an eye 1 atv one end .and ring lthe flat surfaces together and provide the short limb 2 and the long limb 3.
  • the eye is offset or'made eccentric.
  • the blow will ten todrive the short limb farther forward.
  • the tip 4 .of the long limb isbent at an angle--approximately 45 degees-acrossthe tip 5 of the short limb.
  • the en agement of the eye withthe stock at the si e of the hole prevents that limb from being driven farther in, thus the force of the blow is Y transmitted to the short limb which is driven farther in andas its tip passes the bent or offset tip of the lon limb, the free ends of the pin arewedge apart so that they occupy a space that is greater in diameter than'the hole through which the pin was driven. y In this simple manner the pin is automatically locked 'in position and.cannot be removed until the process is reversed by driving back the short limb, or unless the bent tip is straightened.
  • a Cotter-pin made of a iece ofhalf round wire bent so as to provi e an off-center eye atone end and have two limbs of unequal length that extend with the flat surfaces adjacent, the tip of the long limb be'- ing bent at an angle across the tip 0f the short limb, wherebywhen the e e' is 'given a blow, the short limb will be drivenV longitu,x

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Snaps, Bayonet Connections, Set Pins, And Snap Rings (AREA)

Description

" UNITED sTATEs PATENT OFFICE'.
ANDREWv C. CAMPBELL, 015' WATERBURY, CONNECTICUT.
COTTER-PIN.
To all whom 'it may concern:
Be it known that I, ANDREW C. CAMPBELL,
a cit-izen of the, United States, residing at n lfVaterbury, in the county' of New Haven .y 5 and State 'of Connecticut, havel invented a A new and useful Improvement in Cotter-Pins,
of which the following is a specification.
` Thisy invention relates to those devices which are designed to be driven through holes for the purpose of preventing the re- 4moval of the parts through which they are driven, or pieces placed upon the parts through which they are driven.
The object of the invention is to rovide a Cotter-pin which is easy to manu acture, simple to use, and which is so constructed that when it is driven into a 'hole it automatically .loc-ks itself in place., To accomplish'this object, a length of the usual wire is doubled upon itself so as to form an eccentric eye at one vend and have one limb longer than the other,` and the tip of the long limb is bent at an angle across the-tip of the short limb in-such manner that when the pin is driven into place, the short limb will be forced forward along the long limb, causing its tip to be driven past the bent tip of the long limb and thus spread the free ends of the limbs to a` diameter that is greater than' the diameter. of. the hole -through which they were driven.
Figure l of the accompanying drawings shows a side view of a Cotter-pin which embodies the invention: Fi 2 is a view looking toward the tip end o `the pin in its normal condition. Fig. 3 shows a pin in its j normal state thrustinto a perforation in a piece of metal. Figa-4 shows a view of the same'afterthe in has been fully driven in and the short llmb forced forward so as to separate the free ends of the limbs and lock the pin in place. y These pins may be made ona suitable automatic wire forming machine of lengths cut froma' coil of half round stock of any f diameter and the required length. The wire isdoubled u on itself 4to form an eye 1 atv one end .and ring lthe flat surfaces together and provide the short limb 2 and the long limb 3. The eye is offset or'made eccentric.
sor that when it is (given a blow, the force of.
the blow will ten todrive the short limb farther forward. The tip 4 .of the long limb isbent at an angle--approximately 45 degees-acrossthe tip 5 of the short limb.
Specification of Letters Patent.
Application led December 21, 1911. Serial N0. 667,161.
Patented' Mar. 5, 1912.
ameterfas the diameter of the two limbs, l
which is usually apfproximately a little less than the diameter o the hole into which the pin is to be thrust.
These` pins can` cheaply as the common Cotter-pin which has limbs of equal length, and the tips of which have to be separated and bent apartby a suitable instrument after the pin has been driven in place.
be made 1as rapidlyY and After one of. these im roved .pins has" been .thrust into a hole or fastenin the part in which it is placed, or for holding a piece on that part, it can be given a li'ht blow witha hammer. As the eye is oiset on the side of the long limb, the en agement of the eye withthe stock at the si e of the hole prevents that limb from being driven farther in, thus the force of the blow is Y transmitted to the short limb which is driven farther in andas its tip passes the bent or offset tip of the lon limb, the free ends of the pin arewedge apart so that they occupy a space that is greater in diameter than'the hole through which the pin was driven. y In this simple manner the pin is automatically locked 'in position and.cannot be removed until the process is reversed by driving back the short limb, or unless the bent tip is straightened.
The invention claimed is:
1. A Cotter-pin made of a iece ofhalf round wire bent so as to provi e an off-center eye atone end and have two limbs of unequal length that extend with the flat surfaces adjacent, the tip of the long limb be'- ing bent at an angle across the tip 0f the short limb, wherebywhen the e e' is 'given a blow, the short limb will be drivenV longitu,x
dinally of the long limb, and bythe engagement of the 'tips cause a separation'of the limbs and increase the normaldiameter of the pin.
2. A round wire bent so as to provlde an eye at one end and-'have' two limbs of unequal length that extend with the flat surfaces adjacent, the tip of the long limb being bent l p V A Cotter-pin made of a pieceiof'half l ,the tip ofthe long limb being at an angle across the tip of the short limb, whereby when lthe' short limb is driven 1ongitudinally' of `'the lng'limb, bythe en agement of the tips a separation of the imbs and an increase in the normal diameter of the pin is caused. v l
3. -A cotter-pin made of apiece 'of Wire bent so as to form an off-'center evel atv one end and have twc` limbs of unequal length, bent at an angle aross the tip vof the short limb,where by,` when theege is given a blow, the short limb will be riven longitudinally of the long limb and by the engagement of the 'cause thel tips to engage and result in a separation 'of the free ends of thelimbsf.
' ANDREW C. CAMPBELL. .Witnesses'fn l A i y f 0. G. RABE,
FRANK A. HUBER.
US66716111A 1911-12-21 1911-12-21 Cotter-pin. Expired - Lifetime US1019595A (en)

Priority Applications (1)

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US66716111A US1019595A (en) 1911-12-21 1911-12-21 Cotter-pin.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US66716111A US1019595A (en) 1911-12-21 1911-12-21 Cotter-pin.

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US1019595A true US1019595A (en) 1912-03-05

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