US1677796A - Yieldable support - Google Patents
Yieldable support Download PDFInfo
- Publication number
- US1677796A US1677796A US89124A US8912426A US1677796A US 1677796 A US1677796 A US 1677796A US 89124 A US89124 A US 89124A US 8912426 A US8912426 A US 8912426A US 1677796 A US1677796 A US 1677796A
- Authority
- US
- United States
- Prior art keywords
- slots
- members
- column
- channel members
- channel
- 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
Links
- 229910052751 metal Inorganic materials 0.000 description 7
- 239000002184 metal Substances 0.000 description 6
- 238000005065 mining Methods 0.000 description 3
- 230000004075 alteration Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- 240000007313 Tilia cordata Species 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 238000009877 rendering Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
- E21D15/14—Telescopic props
- E21D15/16—Telescopic props with parts held together by positive means, with or without relative sliding movement when the prop is subject to excessive pressure
- E21D15/22—Telescopic props with parts held together by positive means, with or without relative sliding movement when the prop is subject to excessive pressure with member, pin, cross- piece, or the like, ruptured, sheared through, or permanently deformed upon excessive pressure
Definitions
- the device of the present invention while capable of a wide field of utility, is pri marily designed'for withstanding subsidence pressures in subterranean mining operations.
- An object of the invention is to provide a. metal supportl or column adapted to take the place of the supporting timbers usually employed.
- a further object of the invention is to provide a yielding support of this character embodying a yieldable or strainable element which becomes distorted under excessive pressures without distorting or twisting the main body of the column ory support.
- a further object of the invention is to provide a device of the class described which will be of rugged, durable, practical con struction, which will be highly ⁇ efiicient and capable of repeated use, and which may be manufactured with comparative economy.
- the strainable element is capableV of ready removal and ,replacement so that undue pressures on the column can result in rendering useless onlyl the strainable element without impairing the further usefulness, or in any Way injuring the telescoping or relatively sliding members.
- Fig. 1 is a broken view Vin front elevation of a supporting column embodying the invention.
- Fig. 2 is a view in longitudinal section therethroughy on the line 2 2 of Fig. 1.
- Fig.l3 is a view in transverse section on the line 3-3 of Fig. 1. Y
- Fig. 4 is a perspective view of the strainable element.
- Figs. 5 and 6 are side elevational views of thecutting implements. V
- Fig. 7 is an enlarged edge view ofthe element shown in Fig. 4.
- I provide a yieldable metallic column or strut in which the distortion caused by subsidence pressures acts to telescope the column without distorting any part thereof, except a strainable element which mayI be readily removed and replaced.i
- I have used the reference numeral 10 to designate an I-beam which serves as the base of the column.
- a pair of oppositely facing channel bars 11 are secured together in back toV back relationship, the flanges 11a ofthe channels being accommodated between the flanges or heads 1()a of the Ibeam.
- the channel members 11 are vspaced apart for disposition upon the opposite sides of the I-beam.
- the upper ends of both channel members 11 are bolted to a spacer plate 12, and the upper portion of the I-beam 10 which is received between the channel members may be supplemented by spacer plates 13, so that the channel members have a sliding fitron the I-beam.
- The-channel lmembers are provided with 'slots 14 and 15' ⁇ aligned respectively with slots 16 and 17 in the I-beam.
- Bolts 18 'pass through the aligned slots 14, 16 and bolts 19 pass through the aligned slots 15, 17, guide the relative sliding movement of the channel members and the I-beam.
- the slots 14 are relatively short, and the slots 16V relatively long, and also the slots 15 are relatively long, while the slots 17 are relatively short.
- the effective relan tive sliding permitted by each set of slots is the same.
- the yieldable or strainable member 20 isv formed with a plurality of grooves 22 eX- tending longitudinally thereof to provide relatively lthin weakened portions 23 in the path 'of the cutting tools.
- Cutting tools 21 pass downwardly through the weakened portions 23 of the strainable element 20, cuttingthrough these portions and cutting or extruding the metal therefrom. Slots 25 are provided in the channel bars for the escape of metal forced outwardly by the cutting tools.
- the strained. member 20 may be readily removed and replaced and the column reused.
- devices embodying the invention are suitable "for use wherever yielding struts, trusses or braces are desirable. f
- a support of the class described including an I-beain, spaced 'oppositely facing channel members straddling the I-beamjand mounted for limited slidingmovement relative thereto, a metallic element adapted to be f.
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Particle Accelerators (AREA)
Description
July 17, 1928.
R. D. PARKS YIELDABLE SUPPORT WITNESSES 5W Q Patented July 1.7, i928.
ROLAND DANE PARKS, 0F LAKE LINDEN, MICHIGAN.
YIELDABLE SUPPORT.
Application led. February 18, 1926. Serial No. 89,124.
The device of the present invention while capable of a wide field of utility, is pri marily designed'for withstanding subsidence pressures in subterranean mining operations.
An object of the invention is to provide a. metal supportl or column adapted to take the place of the supporting timbers usually employed.
A further object of the invention is to provide a yielding support of this character embodying a yieldable or strainable element which becomes distorted under excessive pressures without distorting or twisting the main body of the column ory support.
A further object of the invention is to provide a device of the class described which will be of rugged, durable, practical con struction, which will be highly `efiicient and capable of repeated use, and which may be manufactured with comparative economy.
In carrying out the invention I prefer to employ a plurality of metallic members capable of a relative sliding action when an intermediate yielding member is strained by pressures on the relatively movable members.
Preferably the strainable element is capableV of ready removal and ,replacement so that undue pressures on the column can result in rendering useless onlyl the strainable element without impairing the further usefulness, or in any Way injuring the telescoping or relatively sliding members.
With the above noted and other objects in view, the invention consists in certain novel features of construction and combinations and arrangements of parts, as will be more fully hereinafter set forth and pointed out in the claims. The invention may be more fully understood from thev following description in connection with the accompanying drawings, wherein-` Fig. 1 is a broken view Vin front elevation of a supporting column embodying the invention.
Fig. 2 is a view in longitudinal section therethroughy on the line 2 2 of Fig. 1.
Fig.l3 is a view in transverse section on the line 3-3 of Fig. 1. Y
Fig. 4 is a perspective view of the strainable element.
Figs. 5 and 6 are side elevational views of thecutting implements. V
Fig. 7 is an enlarged edge view ofthe element shown in Fig. 4.
The problems involved in withstanding the subsidence pressures in subterranean mining operations are too well recognizedto by a support of 'ayieldable nature which I-Ience, the time kelement `is vital and can be furnished only will give underV excessive loadings, thereby allowing a natural arch to form and carry the greater portion of the subsidence pressure. Relatively non-yielding metallic supports, as they have heretoforev been installed with rigidity and strength as the objective become hopelessly deformed and vtwisted,blocl\. the underground passageways,
and are difficult to remove after distortion.
In accordance with the present invention,
I provide a yieldable metallic column or strut in which the distortion caused by subsidence pressures acts to telescope the column without distorting any part thereof, except a strainable element which mayI be readily removed and replaced.i
In thev accompanying ldrawings I have used the reference numeral 10 to designate an I-beam which serves as the base of the column. A pair of oppositely facing channel bars 11 are secured together in back toV back relationship, the flanges 11a ofthe channels being accommodated between the flanges or heads 1()a of the Ibeam. It will be noted that the channel members 11 are vspaced apart for disposition upon the opposite sides of the I-beam. Preferablythe upper ends of both channel members 11 are bolted to a spacer plate 12, and the upper portion of the I-beam 10 which is received between the channel members may be supplemented by spacer plates 13, so that the channel members have a sliding fitron the I-beam. y
The-channel lmembers are provided with 'slots 14 and 15'` aligned respectively with slots 16 and 17 in the I-beam. Bolts 18 'pass through the aligned slots 14, 16 and bolts 19 pass through the aligned slots 15, 17, guide the relative sliding movement of the channel members and the I-beam. It will be noted that the slots 14 are relatively short, and the slots 16V relatively long, and also the slots 15 are relatively long, while the slots 17 are relatively short. However, the effective relan tive sliding permitted by each set of slots is the same. By forming the channel members and the I-beam each with a set of short slots,
and a set of long slots, l preservethe maxi-v able element is in thenature of a plate 2O of soft metal or ymetallic alloy which is interposed'between the top of the '1l-beam 10 and a set of ltransversely mounted cutting tools 21 supported adjacent thereto by the upper ends of the channel members 11. It will be noted that the yieldable or strainable member 20 isv formed with a plurality of grooves 22 eX- tending longitudinally thereof to provide relatively lthin weakened portions 23 in the path 'of the cutting tools.
lvVlien the Vcolumn has been setup in a tunnel, and subsidence'pressures become great i enough to overcome the friction between members 10 and 11, plus the resistance offered by the ultimate. strength of the metal in the path of the cutting tools, there will be a relative sliding movement or telcscoping action of the members 10 and '11. Cutting tools 21 pass downwardly through the weakened portions 23 of the strainable element 20, cuttingthrough these portions and cutting or extruding the metal therefrom. Slots 25 are provided in the channel bars for the escape of metal forced outwardly by the cutting tools.
. From the foregoing description it will be evident that l have provided for considerable yielding of thecolumn without injury to any .portion thereof, except the member 20, so
that there is no danger of distorting the body of the column. Byidisassembling the sliding elements of the column, the strained. member 20 may be readily removed and replaced and the column reused. y
l have shown a strainableeleinent sub]eet Ato distortion under compression,rbut it will be obvious that this element might be arranged for distortion when the column is erted on relatively rotatingmembers, and
that it also mightbe distortedfunder shearing strains or stresses.
lt will also be obvious that various types of supports embodying'the principle of the present invention may prove useful in other lfields rthan underground mining operations.
ln fact, devices embodying the invention are suitable "for use wherever yielding struts, trusses or braces are desirable. f
Various changes and alterations might be made in the general form and arrangement or" parts described, without 'departingfrom the invention. Hence I do not wish to limit myselfto the details set forth,'but sha-ll consider myself at Aliberty to'make such changes and alterations 'as fairly fall within `the spirit and scope of the appended claims. A
,l claimy 1. A support of the class describedincluding an I-beain, spaced 'oppositely facing channel members straddling the I-beamjand mounted for limited slidingmovement relative thereto, a metallic element adapted to be f.
strained, vnormally blockingsliding move members straddling thej'Ib'eam anel'having.
limited sliding movement relative 'thereto,a soft metallic pl'ate'between thel channel members opposing-'sliding movementoff the 'channel members relative to the *Iebeann and `eutting elements I'associated with the channel members for strainingthe soft Imetal plate to permit such sliding movement;
. 3.' In a support 'of the class described, an I-beam, oppositely facing spaced channel members straddling the I-beam and :having limited sliding movement relative thereto, a
soft metallicnplate between the `channel mem-V bers opposing'sliding movement-of the .channel members relative tothe I-beam,'an'd cutting elements associated with the ychannel members for straining` the .soft metalplate'to permit such sliding "movement,y said ysoft metal platev being formed with weakened portions in thepathA of movement of `said eut'- ting elements. p K
QA device of vthe class vdescribed in claim 2, and wherein the channel membersfand I- beam are formedwith aligned slots, 'and bolts in said slots guide the 'sliding movement'of the members.
ROLAND DANE lPaints.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US89124A US1677796A (en) | 1926-02-18 | 1926-02-18 | Yieldable support |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US89124A US1677796A (en) | 1926-02-18 | 1926-02-18 | Yieldable support |
Publications (1)
Publication Number | Publication Date |
---|---|
US1677796A true US1677796A (en) | 1928-07-17 |
Family
ID=22215821
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US89124A Expired - Lifetime US1677796A (en) | 1926-02-18 | 1926-02-18 | Yieldable support |
Country Status (1)
Country | Link |
---|---|
US (1) | US1677796A (en) |
Cited By (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2613904A (en) * | 1948-08-26 | 1952-10-14 | Sato Takeo | Angle post and shoring head |
US2746780A (en) * | 1946-06-28 | 1956-05-22 | Dexion Ltd | Rigid angle joint |
US3318099A (en) * | 1964-07-06 | 1967-05-09 | Robbins & Assoc James S | Adjustable tunnel sets |
FR2426147A1 (en) * | 1978-05-19 | 1979-12-14 | Davum | STRESS LIMITATION DEVICE, ESPECIALLY FOR UNDERGROUND TUBULAR WORKS |
US5004366A (en) * | 1989-11-02 | 1991-04-02 | Simmons George H | Break-away coupling |
US5988598A (en) * | 1998-11-04 | 1999-11-23 | Safety By Design, Inc. | Breakaway steel guardrail post |
US6398192B1 (en) * | 1999-01-06 | 2002-06-04 | Trn Business Trust | Breakaway support post for highway guardrail end treatments |
US6488268B1 (en) | 1997-05-09 | 2002-12-03 | Trn Business Trust | Breakaway support post for highway guardrail end treatments |
US20030215305A1 (en) * | 2002-01-30 | 2003-11-20 | Alberson Dean C. | Locking hook bolt and method for using same |
US6655877B2 (en) * | 2002-04-16 | 2003-12-02 | W. David Calhoun | Yielding column |
US6715735B2 (en) | 2000-08-31 | 2004-04-06 | The Texas A&M University System | Head assembly for guardrail extruder terminal |
US6783116B2 (en) | 1999-01-06 | 2004-08-31 | Trn Business Trust | Guardrail end terminal assembly having at least one angle strut |
US6902150B2 (en) | 2001-11-30 | 2005-06-07 | The Texas A&M University System | Steel yielding guardrail support post |
US20060017048A1 (en) * | 2002-01-30 | 2006-01-26 | The Texas A&M University System | Cable guardrail release system |
US20080193200A1 (en) * | 2007-02-09 | 2008-08-14 | Lewis Donald G | Breakaway signpost |
US20090302188A1 (en) * | 2007-02-09 | 2009-12-10 | Lewis Donnie G | Breakaway signpost adapter |
US8517349B1 (en) | 2000-10-05 | 2013-08-27 | The Texas A&M University System | Guardrail terminals |
US20140212203A1 (en) * | 2011-08-15 | 2014-07-31 | George E. Kochanowski | Jointed member |
WO2021257410A1 (en) * | 2020-06-19 | 2021-12-23 | Traffix Devices, Inc. | Crash impact attenuator systems and methods |
-
1926
- 1926-02-18 US US89124A patent/US1677796A/en not_active Expired - Lifetime
Cited By (30)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2746780A (en) * | 1946-06-28 | 1956-05-22 | Dexion Ltd | Rigid angle joint |
US2613904A (en) * | 1948-08-26 | 1952-10-14 | Sato Takeo | Angle post and shoring head |
US3318099A (en) * | 1964-07-06 | 1967-05-09 | Robbins & Assoc James S | Adjustable tunnel sets |
FR2426147A1 (en) * | 1978-05-19 | 1979-12-14 | Davum | STRESS LIMITATION DEVICE, ESPECIALLY FOR UNDERGROUND TUBULAR WORKS |
US5004366A (en) * | 1989-11-02 | 1991-04-02 | Simmons George H | Break-away coupling |
US6886813B2 (en) | 1997-05-09 | 2005-05-03 | Exodyne Technologies, Inc. | Breakaway support post for highway guardrail end treatments |
US6488268B1 (en) | 1997-05-09 | 2002-12-03 | Trn Business Trust | Breakaway support post for highway guardrail end treatments |
US8038126B1 (en) | 1997-05-09 | 2011-10-18 | Trinity Industries, Inc. | Breakaway support post for highway guardrail end treatments |
US6793204B2 (en) | 1997-05-09 | 2004-09-21 | Trn Business Trust | Breakaway support post for highway guardrail end treatments |
US5988598A (en) * | 1998-11-04 | 1999-11-23 | Safety By Design, Inc. | Breakaway steel guardrail post |
US6619630B2 (en) | 1999-01-06 | 2003-09-16 | Trn Business Trust | Breakaway support post for highway guardrail end treatments |
US6398192B1 (en) * | 1999-01-06 | 2002-06-04 | Trn Business Trust | Breakaway support post for highway guardrail end treatments |
US6783116B2 (en) | 1999-01-06 | 2004-08-31 | Trn Business Trust | Guardrail end terminal assembly having at least one angle strut |
US6715735B2 (en) | 2000-08-31 | 2004-04-06 | The Texas A&M University System | Head assembly for guardrail extruder terminal |
US8517349B1 (en) | 2000-10-05 | 2013-08-27 | The Texas A&M University System | Guardrail terminals |
US6902150B2 (en) | 2001-11-30 | 2005-06-07 | The Texas A&M University System | Steel yielding guardrail support post |
US6948703B2 (en) | 2002-01-30 | 2005-09-27 | The Texas A&M University System | Locking hook bolt and method for using same |
US20060017048A1 (en) * | 2002-01-30 | 2006-01-26 | The Texas A&M University System | Cable guardrail release system |
US20030215305A1 (en) * | 2002-01-30 | 2003-11-20 | Alberson Dean C. | Locking hook bolt and method for using same |
US7556242B2 (en) | 2002-01-30 | 2009-07-07 | The Texas A&M University Systems | Cable guardrail release system |
US6655877B2 (en) * | 2002-04-16 | 2003-12-02 | W. David Calhoun | Yielding column |
US20080193200A1 (en) * | 2007-02-09 | 2008-08-14 | Lewis Donald G | Breakaway signpost |
US20090302188A1 (en) * | 2007-02-09 | 2009-12-10 | Lewis Donnie G | Breakaway signpost adapter |
US8303209B2 (en) | 2007-02-09 | 2012-11-06 | Lewis Donnie G | Breakaway signpost adapter |
US7537412B2 (en) * | 2007-02-09 | 2009-05-26 | Lewis Donald G | Breakaway signpost |
US20140212203A1 (en) * | 2011-08-15 | 2014-07-31 | George E. Kochanowski | Jointed member |
US10533313B2 (en) * | 2011-08-15 | 2020-01-14 | George E. Kochanowski | Jointed member |
US11332922B2 (en) | 2011-08-15 | 2022-05-17 | George E. Kochanowski | Jointed member |
WO2021257410A1 (en) * | 2020-06-19 | 2021-12-23 | Traffix Devices, Inc. | Crash impact attenuator systems and methods |
US20210394695A1 (en) * | 2020-06-19 | 2021-12-23 | Traffix Devices, Inc. | Crash impact attenuator systems and methods |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US1677796A (en) | Yieldable support | |
DE938002C (en) | Steel pit stamp | |
US2029789A (en) | Yieldable support | |
DE657927C (en) | Resilient pit ram or extension frame | |
DE831385C (en) | Lock for pit stamp | |
DE965845C (en) | Flexible joint construction in steel for routes, crosscuts, etc. like | |
DE497706C (en) | Extension part, especially for routes, consisting of two or more opposing profile bars forming a support | |
DE534541C (en) | Cast iron pit lining | |
DE1004571B (en) | Flexible joint expansion for pit sections, cross cuts or the like. | |
DE888232C (en) | Compliant pit or route stamp | |
DE508962C (en) | Flexible door frame extension | |
DE934341C (en) | Pit punches made of steel or light metal | |
DE507310C (en) | Resilient iron pit stamp | |
DE2163390A1 (en) | Device for fastening running or guide rails | |
DE951354C (en) | Bolt holder for track expansion from channel profiles | |
DE446535C (en) | Reinforced concrete track extension for mines | |
DE557174C (en) | Flexible polygonal support in mining operations | |
DE633475C (en) | Ring or arched track extension from profile iron segments | |
DE976890C (en) | Longwall construction for steep storage by means of flexible rams tensioned between the hanging wall and the lying surface before the mining impact | |
DE649670C (en) | Extension of the route with pit punches which are inserted into a concrete column | |
DE501707C (en) | Cap shoe made from a wrought iron plate | |
DE452701C (en) | Section bend made of profile iron for pit lining | |
DE1200233B (en) | Walking hydraulic pit support frame | |
DE885234C (en) | Pit stamp with fork-shaped part | |
DE814589C (en) | Longwall construction in the mine |