US2616609A - Tower ladder safety device - Google Patents

Tower ladder safety device Download PDF

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Publication number
US2616609A
US2616609A US203417A US20341750A US2616609A US 2616609 A US2616609 A US 2616609A US 203417 A US203417 A US 203417A US 20341750 A US20341750 A US 20341750A US 2616609 A US2616609 A US 2616609A
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United States
Prior art keywords
spring
detent
safety device
ladder
tower
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Expired - Lifetime
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US203417A
Inventor
Herod Ray Harlen
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.)
FAY RANDLE HEROD
JOAN HEROD VAN VOORHEES
PATRICK J HURLEY
Original Assignee
FAY RANDLE HEROD
JOAN HEROD VAN VOORHEES
PATRICK J HURLEY
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Publication date
Application filed by FAY RANDLE HEROD, JOAN HEROD VAN VOORHEES, PATRICK J HURLEY filed Critical FAY RANDLE HEROD
Priority to US203417A priority Critical patent/US2616609A/en
Application granted granted Critical
Publication of US2616609A publication Critical patent/US2616609A/en
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Expired - Lifetime legal-status Critical Current

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    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06C—LADDERS
    • E06C7/00—Component parts, supporting parts, or accessories
    • E06C7/18—Devices for preventing persons from falling
    • E06C7/186—Rail or rope for guiding a safety attachment, e.g. a fall arrest system
    • E06C7/187—Guiding rail

Definitions

  • This invention relates to tower'iaddersaiet devices of the" type disclosed in mi Patent No. 25381904 and co pending applications Serial No. 1373;458, filedJulyJ 12', 1950', and Serial No. 133,811, filed september' 8,.1950, and of which latter application this present-application is a continuation-in-part.
  • one ofthepri'm'ary objects of the present invention is to provide-"a tower. ladder safety devlcefwhich, while having. all of the advantages of the towerladder safety devicesdisclosed in my aforesaid co-pending applications, has the further advantage of being able to withstand hard usage to a degree considerably greater than is thea case with the aforementioned-tower ladder safety devices.
  • an improved. tension spring assembly for the detent is. provided :for ensuring 'quick action on the part oilthedetent in the even-tthe userstarts-to fall,
  • the springtension assembly for the detent is housed ina manner to protect the assembly-from damage as might otherwiseresult from rough-and carelessihandlingof the safety device.
  • the: present invention is characterized by asnovel spring tensionankembly for the detent which: materiall :enhances the-safety factors of the device.
  • FIG. Lisaside elevational viewof a tower- Figure 4 is a side elevational view of the main bearing part of the sleeve assembly and illustrating a slightly modified form of the invention.
  • the safety device of this 2 invention alsoincludes a tube-9" which" carries peripherally, studs or posts Ill.
  • the studs or posts l0 are positively associated with the tube 9 in any suitable manner, as for example, by being either'welded thereto or screw threadedly engaged therewith;
  • Tube 9 is provided with a channel bar H which coacts with a clamping plate I I for securing the tube 9 in positive engagement with a ladder indicated generally by the r'eferencenumeral 1
  • the channel bar I 4 and clamping plate H are suitably apertured to accommodate" the studs 19, and channel bar l4 and clamping plate I l are'se'cured inp'ositive engagement with the rungs 8 of the ladder through the mediumjof the studs I0 and nuts orother suitablesecuring' means l3 engaged therewith in a conventional and obvious manner.
  • clamping plate II is provided with notchesor' recesses 12 for selective engagement with the ladder'rungs'8 for positively holding the'tube 9 against'lateral displacement.
  • a sleeve assembly designated generally by the reference numeral Hi.
  • a main bearing. part I and an auxiliary bearing part ll.
  • Parts' lfiand [1. are connected by bars I 8. and'l9; hingedly. connected' together attheir approximate ends as llldicated at- 20-...
  • the main bearing .part l6 consists of an elongated-sleeve generally cylindrical inform and preferably formed integrall with part I8.
  • Bearing part or sleeve l6 is provided with an opening z'tfor accommodatingthe guide channel [4, as shown toadvantage in Figure 3.
  • sleeve 16 is "provided with upper and lower bearing roll ers' that have surface contact with thetube 9 for reducing friction.
  • the auxiliary or lower bearing part I! is preferably detachably secured to the part I9 by bolts 6 and consists of a band or collar which is generally of circular contour and is provided with an opening 24 that accommodates the guide channel I4.
  • This auxiliary or lower bearing part I! is likewise provided with rollers having surface contact with the tube 9 for reducing friction.
  • the sleeve assembly also includes a detent 25 which is pivotally mounted between ears 26 which issue from the main bearing part 16.
  • the inner end of the detent is adapted for engagement in any one of a series of notches 21 formed in the outer periphery of the tube 9.
  • the outer end of the detent is enlarged and provided with an opening 28 for the reception of a link 23.
  • the link 29 carries a snap fastener 30 which is adapted for engagement with the D ring 3
  • the safety belt 32 is connected to the sleeve assembly by a chain 34, one end of the chain being swivelly engaged with the D ring 3
  • Chain 34 is equipped with a spring 35, one end of the spring being engaged with an intermediate link of the chain, and the opposite end of the spring, together with the corresponding end of the chain 34 being secured to the lower bar H! as indicated generally at (see Figure 1).
  • Spring 35 serves to take up slack in the chain and assure freer movement of the climber.
  • the safety device and particularly the sleeve assembly of this invention, is characterized over the safety device of my previously mentioned applications by the provision of an expansion spring 36 acting on the detent to. maintain the same constantly under tension to ensure quick action in engaging one of the notches 21 in the event of a fall by the climber; and also by the provision of a protecting housing 31 formed integrally with the main bearing part [3 and issuing therefrom and from the ears 26, as clearly shown in the drawing.
  • the detent 25 is formed with a shoulder portion having integrally therewith an anchoring stud or pin 38.
  • One end of the coil spring 36 is convoluted about the stud 38 and impinges the shoulder portion of the detent 25.
  • the other end of the spring 36 is accommodated within a suitable socket 39 formed internally of the housing 31, as shown to advantage in Figure 2.
  • spring 36 is normally compressed between the wall of the housing 31 and the shouldered portion of the detent 25 and inherently tends to expand and as a consequence act on the detent 25 for effecting a quick engagement of the detent with the notches 27 as and for the purposes above stated.
  • the spring 36 may be used as the sole tensioniing means acting on the detent 25 for the purposes above stated and as shown in Figures 1 to 3 inclusive or, the spring may be used in conjunction with a contractible spring 40 as shown in Figure 4.
  • the spring All is connected at one end as shown at 4
  • spring 40 will ensure quick action in engaging the detent with one of the notches 21 in the event of a fall by the climber.
  • spring 40 when desired, is an additional safety factor and when used in the assembly will not interfere with the effective action of spring 36 when that latter is in good working position and condition.
  • a tower ladder safety device comprising a support carried by the ladder, a sleeve assembly slidably engageable with the support including a main bearing part, a substantially completely housed spring pressed detent and an auxiliary bearing part below the main bearing part and attached thereto, and means engaged With said detent and auxiliary bearing part assembly for connection to a person ascending or descending the ladder, the detent being automatically movable into locking engagement with the support in the event of displacement of the person from the ladder.
  • a tower ladder safety device the combination of a ladder equipped with a support carried by the ladder rungs, a sleeve assembly including a main part with attached housed detent and an auxiliary part connected to the main part below the latter in fixed spaced vertical relation thereto, the parts being slidably mounted on said support, the connection between the main part and auxiliary part being constructed to allow relative movement in response to curvatures in the support, said assembly including connecting means engaged with said detent and with said auxiliary part and engaged with the safety belt of the climber to sustain the climber in the event of casual displacement of the climber from the ladder and to automatically urge the assembly upwardly with the ascent of the climber on the ladder.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Ladders (AREA)

Description

Nov. 4, 1952 R. H. HEROD 2,616,609
TOWER LADDER SAFETY DEVICE Filed Dec. 29, 1950 w 4 mm 38 I i 'fjfllifil i 9 mr' M I 22 25 .215 25 E M I 28 INVENTOR 4/ 1 RAY .HARLEN .HE'ROD 43 o f & BY m l ATTORNEYS Patented Nov. 4, 1952 STATES PATENT OFFICE TOWER; LADDER SAFETY DEVICE Ray Harlen Herb'dQBurbank} cans, assigno'r of one fourth to Patrick .LHurley, Washington,
D: (3L, one-half to Fay Randle Herod, Glendale, and on'e-fourtli to JoanHerod-Van Vo'orhees,-
Burbank, Calif.
ApplicationDecember 29, 1950, SeriaLNo; 203;4'1-7' 2 Claims; 1 This invention relates to tower'iaddersaiet devices of the" type disclosed in mi Patent No. 25381904 and co pending applications Serial No. 1373;458, filedJulyJ 12', 1950', and Serial No. 133,811, filed september' 8,.1950, and of which latter application this present-application is a continuation-in-part.
one ofthepri'm'ary objects of the present invention is to provide-"a tower. ladder safety devlcefwhich, while having. all of the advantages of the towerladder safety devicesdisclosed in my aforesaid co-pending applications, has the further advantage of being able to withstand hard usage to a degree considerably greater than is thea case with the aforementioned-tower ladder safety devices.
In accordance with the presentinvention, an improved. tension spring assembly for the detent is. provided :for ensuring 'quick action on the part oilthedetent in the even-tthe userstarts-to fall,
to thereby arrestthefalland prevent serious injury'to the. user.
Further, in accordance with this invention, .the springtension assembly for the detent is housed ina manner to protect the assembly-from damage as might otherwiseresult from rough-and carelessihandlingof the safety device.
Also; the: present invention is characterized by asnovel spring tensionfassembly for the detent which: materiall :enhances the-safety factors of the device.
The invent1on;.together with its objects and advantages, will be best understood and appreciated when the following description thereof is. read with reference to the accompanying drawing, wherein are illustratedpractical embodiments of the invention, and in which:
Figure Lisaside elevational viewof a tower- Figure 4 is a side elevational view of the main bearing part of the sleeve assembly and illustrating a slightly modified form of the invention.
As is characteristic of the tower ladder safety devices disclosed in my aforementioned 00- I pending applications, the safety device of this 2 invention alsoincludes a tube-9" which" carries peripherally, studs or posts Ill. The studs or posts l0 are positively associated with the tube 9 in any suitable manner, as for example, by being either'welded thereto or screw threadedly engaged therewith;
Tube 9 is provided with a channel bar H which coacts with a clamping plate I I for securing the tube 9 in positive engagement with a ladder indicated generally by the r'eferencenumeral 1 In this connection it will be noted that the channel bar I 4 and clamping plate H are suitably apertured to accommodate" the studs 19, and channel bar l4 and clamping plate I l are'se'cured inp'ositive engagement with the rungs 8 of the ladder through the mediumjof the studs I0 and nuts orother suitablesecuring' means l3 engaged therewith in a conventional and obvious manner. It will also be noted that clamping plate II is provided with notchesor' recesses 12 for selective engagement with the ladder'rungs'8 for positively holding the'tube 9 against'lateral displacement.
Mounted'on'the'tube 9 for movement there along'is a sleeve assembly designated generally by the reference numeral Hi. In genera-Lthis sleeve assembly, like to the sleeve assemblies of theitowe'r ladder safety devices'of my c'o-pending applications, consists of a main bearing. part I and an auxiliary bearing part ll. Parts' lfiand [1. are connected by bars I 8. and'l9; hingedly. connected' together attheir approximate ends as llldicated at- 20-...
The main bearing .part l6 consists of an elongated-sleeve generally cylindrical inform and preferably formed integrall with part I8. Bearing part or sleeve l6 is provided with an opening z'tfor accommodatingthe guide channel [4, as shown toadvantage in Figure 3. Also, sleeve 16 is "provided with upper and lower bearing roll ers' that have surface contact with thetube 9 for reducing friction.
The auxiliary or lower bearing part I! is preferably detachably secured to the part I9 by bolts 6 and consists of a band or collar which is generally of circular contour and is provided with an opening 24 that accommodates the guide channel I4. This auxiliary or lower bearing part I! is likewise provided with rollers having surface contact with the tube 9 for reducing friction.
The sleeve assembly also includes a detent 25 which is pivotally mounted between ears 26 which issue from the main bearing part 16. The inner end of the detent is adapted for engagement in any one of a series of notches 21 formed in the outer periphery of the tube 9. The outer end of the detent is enlarged and provided with an opening 28 for the reception of a link 23. The link 29 carries a snap fastener 30 which is adapted for engagement with the D ring 3| of a safety belt 32 (fragmentarily shown in Figure 1) The safety belt 32 is connected to the sleeve assembly by a chain 34, one end of the chain being swivelly engaged with the D ring 3| while the opopsite end is engaged to the lower bar I9. Chain 34 is equipped with a spring 35, one end of the spring being engaged with an intermediate link of the chain, and the opposite end of the spring, together with the corresponding end of the chain 34 being secured to the lower bar H! as indicated generally at (see Figure 1). Spring 35 serves to take up slack in the chain and assure freer movement of the climber.
The safety device, and particularly the sleeve assembly of this invention, is characterized over the safety device of my previously mentioned applications by the provision of an expansion spring 36 acting on the detent to. maintain the same constantly under tension to ensure quick action in engaging one of the notches 21 in the event of a fall by the climber; and also by the provision of a protecting housing 31 formed integrally with the main bearing part [3 and issuing therefrom and from the ears 26, as clearly shown in the drawing.
To accommodate the spring 36 the detent 25 is formed with a shoulder portion having integrally therewith an anchoring stud or pin 38. One end of the coil spring 36 is convoluted about the stud 38 and impinges the shoulder portion of the detent 25. The other end of the spring 36 is accommodated within a suitable socket 39 formed internally of the housing 31, as shown to advantage in Figure 2.
It will be apparent that spring 36 is normally compressed between the wall of the housing 31 and the shouldered portion of the detent 25 and inherently tends to expand and as a consequence act on the detent 25 for effecting a quick engagement of the detent with the notches 27 as and for the purposes above stated.
The spring 36 may be used as the sole tensioniing means acting on the detent 25 for the purposes above stated and as shown in Figures 1 to 3 inclusive or, the spring may be used in conjunction with a contractible spring 40 as shown in Figure 4. The spring All is connected at one end as shown at 4| with the underside of the detent 25, and at its opposite end is adjustably connected to the bar 18 as by having the latter provided with a lug 42 equipped with a series of perforations 43 and with a selected one of which the mentioned end of the spring 40 is engageable for effecting an adjustable yet positive connection between the spring 40 and the member l8.
In the event spring 36 becomes lost, misplaced, or for any other reason fails to perform its intended function, spring 40 will ensure quick action in engaging the detent with one of the notches 21 in the event of a fall by the climber. Thus the employment of the spring 40, when desired, is an additional safety factor and when used in the assembly will not interfere with the effective action of spring 36 when that latter is in good working position and condition.
It has been found that by the employment of an expansion spring such as the spring 36, and the substantial enclosing of the same, as by the housing 31 of this invention, the effective life of the spring is materially lengthened and the likelihood of the spring becoming displaced or broken incidental to rough usage and handling of the tower ladder safety device is so reduced as to be substantially non-existent.
While I have herein described perferred forms of my invention, I am nevertheless aware that changes may be made therein Within the scope of the appended claims.
WhatI claim is:
1. A tower ladder safety device comprising a support carried by the ladder, a sleeve assembly slidably engageable with the support including a main bearing part, a substantially completely housed spring pressed detent and an auxiliary bearing part below the main bearing part and attached thereto, and means engaged With said detent and auxiliary bearing part assembly for connection to a person ascending or descending the ladder, the detent being automatically movable into locking engagement with the support in the event of displacement of the person from the ladder.
2. A tower ladder safety device, the combination of a ladder equipped with a support carried by the ladder rungs, a sleeve assembly including a main part with attached housed detent and an auxiliary part connected to the main part below the latter in fixed spaced vertical relation thereto, the parts being slidably mounted on said support, the connection between the main part and auxiliary part being constructed to allow relative movement in response to curvatures in the support, said assembly including connecting means engaged with said detent and with said auxiliary part and engaged with the safety belt of the climber to sustain the climber in the event of casual displacement of the climber from the ladder and to automatically urge the assembly upwardly with the ascent of the climber on the ladder.
RAY HARLEN HEROD.
Number Name 1,630,484 Fritts May 31, 1927 2,538,904 Herod Jan. 23, 1951
US203417A 1950-12-29 1950-12-29 Tower ladder safety device Expired - Lifetime US2616609A (en)

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Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3348632A (en) * 1965-02-16 1967-10-24 William E Swager Climbing device
US3523591A (en) * 1969-01-06 1970-08-11 Cecil D Fountain Climbing safety device
JPS507879B1 (en) * 1970-02-24 1975-03-29
US3885647A (en) * 1973-07-05 1975-05-27 Anthony L Acosta Climbing safety device
US4085818A (en) * 1976-05-20 1978-04-25 Swager William E Plastic ladder and safety device
US4111280A (en) * 1977-01-31 1978-09-05 Norton Company Supporting guide rail for ladder safety device
US4252214A (en) * 1979-11-14 1981-02-24 Miller James W Safety descent device
US4352409A (en) * 1981-01-21 1982-10-05 Fountain Cecil D Climbing safety device
US5008010A (en) * 1989-05-09 1991-04-16 Langner Herbert G J Rotating cylindrical screen with fine mesh modular panels
US5238084A (en) * 1992-03-05 1993-08-24 Swager William E Safety device for climbing ladders
US5941340A (en) * 1997-03-31 1999-08-24 Dalloz Safety, Inc. Device for use in climbing or in transporting a mass
DE29920850U1 (en) 1999-11-29 2000-02-24 Söll GmbH, 95028 Hof Fall arrest system
US6161647A (en) * 1999-01-25 2000-12-19 Pitt-Des Moines, Inc. Fall arresting ladder safety device
US6471000B2 (en) * 2001-03-16 2002-10-29 Albert A. Wolfe Safety harness and ladder assembly
US20070074998A1 (en) * 2005-10-04 2007-04-05 Langner Herbert Gunther Joachi Method and apparatus for screening kaolin
US20070193824A1 (en) * 2006-02-16 2007-08-23 Anderson Patrick K Ladder safety apparatus
US20080230311A1 (en) * 2007-03-19 2008-09-25 Fusco Gabriele C Fall-arresting mechanism
US20090218165A1 (en) * 2005-11-07 2009-09-03 Andreas Maurer Climbing aid
US20100012426A1 (en) * 2008-07-15 2010-01-21 Convenient Safety Systems, Inc. Sloped Roof Safety System
US20100012424A1 (en) * 2006-10-16 2010-01-21 Markus Krauss Fall arrester for a climbing protection system
US20120247869A1 (en) * 2006-02-16 2012-10-04 Anderson Patrick K Ladder safety apparatus
US8413764B1 (en) 2009-09-29 2013-04-09 David A. Cohen Ladder safety device, systems and methods of arresting falls from ladders
US8875839B1 (en) 2012-06-28 2014-11-04 William Licea Fall restraint system for telescoping ladders
FR3007661A1 (en) * 2013-07-01 2015-01-02 Svl ANTI-RETURNS WITH FREE RATCHET ON SMOOTH RAIL
US20150047925A1 (en) * 2012-03-22 2015-02-19 Logaer Maschinenbau Gmbh Climbing locking system for vertical ladders
US10047560B2 (en) * 2014-05-29 2018-08-14 Honeywell International Inc. Guided type fall arrester—force control

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1630484A (en) * 1924-10-20 1927-05-31 George E Fritts Ladder-climbing device
US2538904A (en) * 1948-10-19 1951-01-23 Patrick J Hurley Tower ladder safety device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1630484A (en) * 1924-10-20 1927-05-31 George E Fritts Ladder-climbing device
US2538904A (en) * 1948-10-19 1951-01-23 Patrick J Hurley Tower ladder safety device

Cited By (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3348632A (en) * 1965-02-16 1967-10-24 William E Swager Climbing device
US3523591A (en) * 1969-01-06 1970-08-11 Cecil D Fountain Climbing safety device
JPS507879B1 (en) * 1970-02-24 1975-03-29
US3885647A (en) * 1973-07-05 1975-05-27 Anthony L Acosta Climbing safety device
US4085818A (en) * 1976-05-20 1978-04-25 Swager William E Plastic ladder and safety device
US4111280A (en) * 1977-01-31 1978-09-05 Norton Company Supporting guide rail for ladder safety device
US4252214A (en) * 1979-11-14 1981-02-24 Miller James W Safety descent device
US4352409A (en) * 1981-01-21 1982-10-05 Fountain Cecil D Climbing safety device
US5008010A (en) * 1989-05-09 1991-04-16 Langner Herbert G J Rotating cylindrical screen with fine mesh modular panels
US5238084A (en) * 1992-03-05 1993-08-24 Swager William E Safety device for climbing ladders
US5941340A (en) * 1997-03-31 1999-08-24 Dalloz Safety, Inc. Device for use in climbing or in transporting a mass
US6161647A (en) * 1999-01-25 2000-12-19 Pitt-Des Moines, Inc. Fall arresting ladder safety device
US6725969B1 (en) 1999-11-29 2004-04-27 Christian Dalloz Holding Deutschland Gmbh & Co. Kg Catch device for a climbing protection system
DE29920850U1 (en) 1999-11-29 2000-02-24 Söll GmbH, 95028 Hof Fall arrest system
US6471000B2 (en) * 2001-03-16 2002-10-29 Albert A. Wolfe Safety harness and ladder assembly
US20070074998A1 (en) * 2005-10-04 2007-04-05 Langner Herbert Gunther Joachi Method and apparatus for screening kaolin
US20090218165A1 (en) * 2005-11-07 2009-09-03 Andreas Maurer Climbing aid
US8919498B2 (en) * 2005-11-07 2014-12-30 M & F Ingenieur Beratungs Ag Climbing aid
US20120247869A1 (en) * 2006-02-16 2012-10-04 Anderson Patrick K Ladder safety apparatus
US20070193824A1 (en) * 2006-02-16 2007-08-23 Anderson Patrick K Ladder safety apparatus
US20100012424A1 (en) * 2006-10-16 2010-01-21 Markus Krauss Fall arrester for a climbing protection system
US8584797B2 (en) * 2006-10-16 2013-11-19 Honeywell Fall Protection Deutschland Gmbh & Co. Kg Fall arrester for a climbing protection system
US20080230311A1 (en) * 2007-03-19 2008-09-25 Fusco Gabriele C Fall-arresting mechanism
US20100012426A1 (en) * 2008-07-15 2010-01-21 Convenient Safety Systems, Inc. Sloped Roof Safety System
US8413764B1 (en) 2009-09-29 2013-04-09 David A. Cohen Ladder safety device, systems and methods of arresting falls from ladders
US20150047925A1 (en) * 2012-03-22 2015-02-19 Logaer Maschinenbau Gmbh Climbing locking system for vertical ladders
US9802068B2 (en) * 2012-03-22 2017-10-31 Wobben Properties Gmbh Climbing locking system for vertical ladders
US8875839B1 (en) 2012-06-28 2014-11-04 William Licea Fall restraint system for telescoping ladders
US9284777B1 (en) 2012-06-28 2016-03-15 William Licea Fall restraint system for telescoping ladders
FR3007661A1 (en) * 2013-07-01 2015-01-02 Svl ANTI-RETURNS WITH FREE RATCHET ON SMOOTH RAIL
US10047560B2 (en) * 2014-05-29 2018-08-14 Honeywell International Inc. Guided type fall arrester—force control

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