US2745703A - Polish rod steps - Google Patents

Polish rod steps Download PDF

Info

Publication number
US2745703A
US2745703A US451137A US45113754A US2745703A US 2745703 A US2745703 A US 2745703A US 451137 A US451137 A US 451137A US 45113754 A US45113754 A US 45113754A US 2745703 A US2745703 A US 2745703A
Authority
US
United States
Prior art keywords
rod
polish rod
arm
face
hanger
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
US451137A
Inventor
Robert E Rose
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.)
SKINNER BROTHERS Co
Original Assignee
SKINNER BROTHERS 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 SKINNER BROTHERS Co filed Critical SKINNER BROTHERS Co
Priority to US451137A priority Critical patent/US2745703A/en
Application granted granted Critical
Publication of US2745703A publication Critical patent/US2745703A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B41/00—Equipment or details not covered by groups E21B15/00 - E21B40/00
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D41/00—Freewheels or freewheel clutches
    • F16D41/06—Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer 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
    • Y10T24/00—Buckles, buttons, clasps, etc.
    • Y10T24/44—Clasp, clip, support-clamp, or required component thereof
    • Y10T24/44291—Clasp, clip, support-clamp, or required component thereof including pivoted gripping member
    • Y10T24/44496—Clasp, clip, support-clamp, or required component thereof including pivoted gripping member with operator means for moving pivoted member

Definitions

  • One object of the invention is to provide an improved step which may be readily placed on the polish rod of a pumping well and locked in position on said rod, when a workman desiring to work upon the fixtures at the upper end of the rod, places his feet upon the step.
  • a particular object of the invention is to provide an improved polish rod step which has a toggle locking action, whereby positive holding on a highly polished and oily surface is obtained without marring said surface.
  • a further object of the invention is to provide an improved step having a rod engaging member provided with an upstanding, triangular guard on its upper end, disposed to discourage a workman from removing one foot from the step arm and placing it upon the rod engaging member, which would result in shifting his weight and thus loosening the step upon the polish rod.
  • Still another object of the invention is to provide an improved polish rod step constructed to provide a tight grip upon the rod and including a pivoted step arm having thereon a protrusion located to bind the rod in a hanger and bring the head of the rod into locking engagement with the rod.
  • Fig. l is a perspective view of a step constructed in accordance with the invention, locked on a polish rod which is shown in dotted lines and the feet of a workman standing upon the step.
  • Fig. 2 is a plan view of a portion of the step
  • Fig. 3 is a side elevation of the step in position on a polish rod, but with the step arm raised and unlocked,
  • Fig. 4 is a similar view with the step arm lowered and the device locked on the rod, and
  • Fig. 5 is an enlarged perspective ofthe face of the locking head.
  • the numeral designates, in general, a bracket or support made of suitable metal and adapted to engage on a polish rod A, such as is used on oil and water wells.
  • the bracket is elongated horizontally or has its greatest length longitudinally thereof and has its central portion open, as is indicated at 11 which tends to reduce its total weight.
  • the bracket At its left-hand end, when in a horizontal position and as viewed in the drawings, the bracket has an upright hanger 12 which extends vertically of the left-hand or outer end of said bracket.
  • This hanger has an inner vertical gripping face 13 which is substantially U-shaped in cross-section and merges on its inner side into the adjacent surface of the bracket, so as to snugly engage around the polish rod.
  • a flat inverted yoke 14 extends outwardly from the upper portion of said bracket and is preferably integral with the bracket.
  • This yoke which in efiect is overhanging, has a flat-sided opening 15, and the flat-sided bearing boss 16 at the outer end of the shank 17 of a step arm 18, is journaled in the opening 15 on a pivot bolt 19 passing transversely through the yoke and the boss and secured by a nut 20.
  • the arm 18 is continued from the boss 16 in the form of a downwardly inclined finger or extension 21 which is merged at its outer end into a locking head 22 having an upright transversely curved face 23.
  • a protruding arcuate bead or grip 24 extending thereacross.
  • the upper surface of the step is roughened or serrated, as indicated at 27 in Fig. 1.
  • a workman standing on the step engages his insteps on the surface 27 with his heels against the edge of said step as is shown in Fig. l.
  • a triangular guard 23 is cast upon the bracket and functions to discourage the workman from placing his foot upon the bracket and thus shifting his weight from the step plate 25.
  • Reinforcing ribs 29 are cast along the back face of the bracket.
  • this step is unique and important. It will be observed that the distance from the pivot bolt 19, on which the arm 18 swings, to the surface of the bead 24 is slightly greater than the distance from said bolt to the imaginary line between said head and the bottom edge of the face 23, and consequently, a toggle action is had.
  • the grip is swung into engagement with the polish rod A. This causes the hanger 12 to be drawn tight around the rod (Fig. 3).
  • the grip 24 which is tightly binding on the surface of the rod rides upwardly past a dead center position until the bottom edge of the curved face 23 rides into binding engagement with the rod (Fig. 4).
  • a polish rod step including, a support, an upright hanger on the support having a vertically-extending concave face for receiving a polish rod, a step arm pivotally mounted on the support at a point spaced laterally from the hanger and in horizontal alinement with the hanger, an extension carried by the arm and projecting from the pivot point of the arm toward the concave face of the hanger for engaging and clamping a polish rod in engagement with the hanger face, the end of said extension being formed with a rod-engaging face, and a transverse head on the upper portion of the latter face spaced further from the pivot point of the arm than the imaginary line between the apex of the bead and the lower margin of the rod-engaging face of the extension, whereby as the extension is swung upwardly into engagement with a polish rod a toggle action is obtained I 3 in forcing the extension upwardly past initial engagement of the head with the polish rod to bring the apex of the bead and the lower margin of the rod-engaging face of-the extension into clamp

Description

May 15, 1956 R. E. ROSE POLISH ROD STEPS Filed Aug. 20, 1954 INVENTOR. Haber! E. Rose BY fl/ fi ATTORNEYS United States Patent O POLISH ROD STEPS Robert E. Rose, Odessa, Tex., assignor to Skinner Brothers Company, Tulsa, Okla., a partnership Application August 20, 1954, Serial No. 451,137
3 Claims. (Cl. 304-28) This invention relates to new and useful improvements in polish rod steps.
One object of the invention is to provide an improved step which may be readily placed on the polish rod of a pumping well and locked in position on said rod, when a workman desiring to work upon the fixtures at the upper end of the rod, places his feet upon the step.
A particular object of the invention is to provide an improved polish rod step which has a toggle locking action, whereby positive holding on a highly polished and oily surface is obtained without marring said surface.
A further object of the invention is to provide an improved step having a rod engaging member provided with an upstanding, triangular guard on its upper end, disposed to discourage a workman from removing one foot from the step arm and placing it upon the rod engaging member, which would result in shifting his weight and thus loosening the step upon the polish rod.
Still another object of the invention is to provide an improved polish rod step constructed to provide a tight grip upon the rod and including a pivoted step arm having thereon a protrusion located to bind the rod in a hanger and bring the head of the rod into locking engagement with the rod.
A construction designed to carry out the invention will be hereinafter described, together with other features of the invention.
The invention will be more readily understood from a reading of the following specification and by reference of the accompanying drawings, wherein an example of the invention is shown, and wherein:
Fig. l is a perspective view of a step constructed in accordance with the invention, locked on a polish rod which is shown in dotted lines and the feet of a workman standing upon the step.
Fig. 2 is a plan view of a portion of the step,
Fig. 3 is a side elevation of the step in position on a polish rod, but with the step arm raised and unlocked,
Fig. 4 is a similar view with the step arm lowered and the device locked on the rod, and
Fig. 5 is an enlarged perspective ofthe face of the locking head.
In the drawings the numeral designates, in general, a bracket or support made of suitable metal and adapted to engage on a polish rod A, such as is used on oil and water wells. The bracket is elongated horizontally or has its greatest length longitudinally thereof and has its central portion open, as is indicated at 11 which tends to reduce its total weight. At its left-hand end, when in a horizontal position and as viewed in the drawings, the bracket has an upright hanger 12 which extends vertically of the left-hand or outer end of said bracket. This hanger has an inner vertical gripping face 13 which is substantially U-shaped in cross-section and merges on its inner side into the adjacent surface of the bracket, so as to snugly engage around the polish rod.
The right-hand or inner end of the bracket, a flat inverted yoke 14 extends outwardly from the upper portion of said bracket and is preferably integral with the bracket. This yoke, which in efiect is overhanging, has a flat-sided opening 15, and the flat-sided bearing boss 16 at the outer end of the shank 17 of a step arm 18, is journaled in the opening 15 on a pivot bolt 19 passing transversely through the yoke and the boss and secured by a nut 20.
The arm 18 is continued from the boss 16 in the form of a downwardly inclined finger or extension 21 which is merged at its outer end into a locking head 22 having an upright transversely curved face 23. At the top of the face is a protruding arcuate bead or grip 24, extending thereacross. When the arm is swung downwardly to an approximately horizontal position, the grip engages the polish rod and holds the step arm 18 in supporting position. A step plate 25 is cast medially along the upper edge of the arm and has an upstanding guard 26 at its outer end.
The upper surface of the step is roughened or serrated, as indicated at 27 in Fig. 1. A workman standing on the step engages his insteps on the surface 27 with his heels against the edge of said step as is shown in Fig. l. A triangular guard 23 is cast upon the bracket and functions to discourage the workman from placing his foot upon the bracket and thus shifting his weight from the step plate 25. Reinforcing ribs 29 are cast along the back face of the bracket.
The operation of this step is unique and important. It will be observed that the distance from the pivot bolt 19, on which the arm 18 swings, to the surface of the bead 24 is slightly greater than the distance from said bolt to the imaginary line between said head and the bottom edge of the face 23, and consequently, a toggle action is had. When a mans weight is imposed on the step 25, the grip is swung into engagement with the polish rod A. This causes the hanger 12 to be drawn tight around the rod (Fig. 3). Continued weight or downward pressure on the step, gives a snap action whereby the grip 24 which is tightly binding on the surface of the rod rides upwardly past a dead center position until the bottom edge of the curved face 23 rides into binding engagement with the rod (Fig. 4). This locks the step in position and holds it firmly against displacement. The device is readily removed by swinging the arm 18 upwardly which moves the finger 21 and head 22 downwardly, whereby the hanger 12 may be disengaged from the rod. While the grip 24 and the head face 23 are shown as transversely curved, these elements may have other forms.
The foregoing description of the invention is explanatory thereof and various changes in the size, shape and materials, as well as in the details of the iilustrated construction may be made, within the scope of the appended claims, without departing from the spirit of the invention.
What I claim and desire to secure by Letters Patent is:
l. A polish rod step including, a support, an upright hanger on the support having a vertically-extending concave face for receiving a polish rod, a step arm pivotally mounted on the support at a point spaced laterally from the hanger and in horizontal alinement with the hanger, an extension carried by the arm and projecting from the pivot point of the arm toward the concave face of the hanger for engaging and clamping a polish rod in engagement with the hanger face, the end of said extension being formed with a rod-engaging face, and a transverse head on the upper portion of the latter face spaced further from the pivot point of the arm than the imaginary line between the apex of the bead and the lower margin of the rod-engaging face of the extension, whereby as the extension is swung upwardly into engagement with a polish rod a toggle action is obtained I 3 in forcing the extension upwardly past initial engagement of the head with the polish rod to bring the apex of the bead and the lower margin of the rod-engaging face of-the extension into clamping engagement with the rod.
2. A polish rod step as set forth in claim 1, wherein the upper margin of the support is inclined from a point above the hanger downwardly to a point above the pivot point of the arm, whereby a workman is prevented from standing on the support and the foot of the workman will automatically be shifted outward to the step arm.
3. A polish rod step as set forth in claim 1, wherein the rod-engaging face of the extension is transversely curved for conforming to the surface of a polish rod, and the transverse bead on the upper portion of said face is correspondingly curved in a transverse direction.
References Cited in the file of this patent UNITED STATES PATENTS
US451137A 1954-08-20 1954-08-20 Polish rod steps Expired - Lifetime US2745703A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US451137A US2745703A (en) 1954-08-20 1954-08-20 Polish rod steps

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US451137A US2745703A (en) 1954-08-20 1954-08-20 Polish rod steps

Publications (1)

Publication Number Publication Date
US2745703A true US2745703A (en) 1956-05-15

Family

ID=23790965

Family Applications (1)

Application Number Title Priority Date Filing Date
US451137A Expired - Lifetime US2745703A (en) 1954-08-20 1954-08-20 Polish rod steps

Country Status (1)

Country Link
US (1) US2745703A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2896293A (en) * 1957-05-21 1959-07-28 Leslie G Love Over center locking clamp
US4402385A (en) * 1981-05-28 1983-09-06 Buche Peter J Folding step
US6868943B1 (en) * 2002-02-13 2005-03-22 Vanacker, Jr. Henry Safety systems and methods for bosun's chairs
US20140020979A1 (en) * 2012-07-23 2014-01-23 Hurricane Power Lok Systems, Inc. Step extension assembly for tree stand and kit including the same
US20210040795A1 (en) * 2019-08-08 2021-02-11 Purdue Research Foundation Stowable step assembly

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US101746A (en) * 1870-04-12 Improved rock-drill
US333577A (en) * 1886-01-05 Pipe-lifting machine
US1131540A (en) * 1914-04-18 1915-03-09 Edmund J Nerenhausen Detachable milk-seat.
US1278954A (en) * 1918-02-20 1918-09-17 William G Looney Lineman's post-saddle.
US2097562A (en) * 1936-04-24 1937-11-02 American Telephone & Telegraph Portable pole step

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US101746A (en) * 1870-04-12 Improved rock-drill
US333577A (en) * 1886-01-05 Pipe-lifting machine
US1131540A (en) * 1914-04-18 1915-03-09 Edmund J Nerenhausen Detachable milk-seat.
US1278954A (en) * 1918-02-20 1918-09-17 William G Looney Lineman's post-saddle.
US2097562A (en) * 1936-04-24 1937-11-02 American Telephone & Telegraph Portable pole step

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2896293A (en) * 1957-05-21 1959-07-28 Leslie G Love Over center locking clamp
US4402385A (en) * 1981-05-28 1983-09-06 Buche Peter J Folding step
US6868943B1 (en) * 2002-02-13 2005-03-22 Vanacker, Jr. Henry Safety systems and methods for bosun's chairs
US20140020979A1 (en) * 2012-07-23 2014-01-23 Hurricane Power Lok Systems, Inc. Step extension assembly for tree stand and kit including the same
US10895109B2 (en) * 2012-07-23 2021-01-19 Hurricane Safety Systems, Llc Step extension assembly for tree stand and kit including the same
US20210040795A1 (en) * 2019-08-08 2021-02-11 Purdue Research Foundation Stowable step assembly

Similar Documents

Publication Publication Date Title
US2873995A (en) Pipe handling tool
US3985338A (en) Manhole cover lifter
US3091342A (en) Receptacle support and holder
US2745703A (en) Polish rod steps
US6112335A (en) Foot actuated, anti-slamming, toilet seat raising and lowering device
JPH0443124B2 (en)
US2888759A (en) Ironing board with built-in midget board
US2930583A (en) Handle for sheet material
US6397704B1 (en) Corkscrew
US8359707B1 (en) Rod brackets and related systems and methods
US2898705A (en) Cemetery vase
US2210904A (en) Lifting tongs
US5819932A (en) Tool holder
US8925148B2 (en) Rod brackets and related systems and methods
US1366324A (en) Implement-holding device
US2653785A (en) Clothesling prop
US2201138A (en) Hoist support
US2079551A (en) Golf bag attachment
US3042440A (en) Post hole digger
US2466840A (en) Paint can holder
US1776027A (en) Eccentric slip socket
US2896902A (en) Supporting stirrup for tracks
US2496794A (en) Wallpaper removing device
US2194834A (en) Reinforced concrete stool or chair
US1976121A (en) Shovel seat