US3712419A - Ladder attachment - Google Patents

Ladder attachment Download PDF

Info

Publication number
US3712419A
US3712419A US00168903A US3712419DA US3712419A US 3712419 A US3712419 A US 3712419A US 00168903 A US00168903 A US 00168903A US 3712419D A US3712419D A US 3712419DA US 3712419 A US3712419 A US 3712419A
Authority
US
United States
Prior art keywords
ladder
bracket
rod means
building
attachment according
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
US00168903A
Inventor
Hara C O
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.)
HARA CO
Original Assignee
HARA 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 HARA CO filed Critical HARA CO
Application granted granted Critical
Publication of US3712419A publication Critical patent/US3712419A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06C—LADDERS
    • E06C7/00—Component parts, supporting parts, or accessories
    • E06C7/48—Ladder heads; Supports for heads of ladders for resting against objects

Definitions

  • the extension ladder may be used for performing work on the major part of the building side, a point is reached where it is impossible for the painter to use the ladder in the stable, inclined position and finish the work on the lower portion of the building wall; thus, requiring the use of a smaller ladder, such as a step ladder.
  • the ladder attachment of the present invention has been devised which comprises, essentially, a bracket secured to each side frame or rail or an extension ladder.
  • a rubber-tipped rod is slidably mounted in each bracket, and a tension spring is connected between each rod and its respective bracket, whereby the rods are biased upwardly toward the upper end of the ladder.
  • the spring biased rods are adapted to frictionally engage the bottom surface of a building eaves whereby the ladder is held in a substantially vertical, operative position relative to the building.
  • FIG. 1 is a side elevational view showing the attachment of the present invention secured to an extension ladder disposed initially in an inclined position relative to a building;
  • FIG. 2 is a side elevational view of the ladder and associated attachment disposed in the operative, vertical position relative to the building;
  • FIG. 3 is a sectional view taken along line 3-3 of FIG. 2;
  • FIG. 4 is a view taken along line 4-4 ofFlG. 3;
  • FIG. 5 is a fragmentary, sectional, top plan view showing another embodiment of the manner in which the attachment may be secured to a ladder having flanged side rails.
  • the attachment 1 of the present invention is shown mounted on an extension ladder 2 disposed adjacent a building 3.
  • each side rail 2a of the ladder has a bracket 4 secured thereto by suitable clamps 5, to be described more fully hereinafter.
  • Each bracket 4 comprises a piece of sheet metal bent back upon itself to form a tubular portion 411 along one edge thereof, a plurality of bolts 6 extend through the sheet metal to hold the edge portion in a substantially tubular configuration.
  • a rod 7 is slidably received in each of the tubular portions 4a of the bracket, each rod having a rubber tip 8 secured to the top end thereof and a collar 9 secured to the lower end portion thereof.
  • a tension spring 10 is connected between the collar 9 and the bracket 4 whereby the rod is 'biased upwardly through the tubular portion 4a.
  • Each rod 7 is provided with a stop'collar 11 which abuts the lower end of the tubular portion to thereby limit the upward movement of the rod.
  • the free edges of the bracket that is, the edges of the bracket opposite from the tubular portion 4a, are bent inwardly to form flange portions 4b adapted to abut the inner edge portion 2b of the ladder side rail.
  • the brackets are secured to the ladder side rails by straps 50 having their end portions secured to opposite faces of the bracket by suitable bolts 5b, the outer ends of the straps being secured to the ladder side rails by a clamping plate 5c secured to the straps by bolts 5d.
  • FIG. 5 illustrates another embodiment of securing the attachment of the present invention to a conventional extruded metal ladder having flanged side rails.
  • the flanged portions 4b of the bracket 4 abut the inner surfaces 2c of the flanged side rail and are held thereon by the bolts 5b.
  • the ladder is first disposed in an inclined position as shown in FIG. 1, with the tip 8 of each rod 7 engaging the lower surface 3a of the building eaves.
  • the lower end of the ladder is then moved toward the building to a substantially vertical position as shown in FIG. 2.
  • the rods 7 are caused to slide downwardly relative to their respective brackets against the biasing force of the springs.
  • the biasing force of the springs 10 urging the rods 7 upwardly, the upper ends of the rods are frictionally held against the building eaves to thereby maintain the ladder in a substantially vertical position.
  • attachment has been shown attached to the upper end portion of the ladder, it can be mounted at other positions along the length of the ladder side rails depending upon the height of the building upon which the ladder is to be used.
  • a ladder attachment of the character described for holding a ladder in a substantially vertical, operative position against a building comprising, rod means, at least one bracket carried by the ladder for slidably receiving said rod means, means connecting said bracket to the upper end portion of the ladder, a tubular portion formed on said bracket, said rod means being freely slidably in said tubular portion, and spring means mounted between said rod means and said bracket for biasing said rod means in'a longitudinal direction toward the upper end of the ladder, whereby the upper end of the rod means is biased against the lower surface of the building eaves to thereby hold the ladder in a substantially vertical, operative position.
  • a ladder attachment according to claim 1 wherein a rubber tip is mounted on the the upper ends of the rod means whereby the upper end of the rod means is frictionally held against the building eaves.
  • a ladder attachment according to claim 1 wherein a pair of brackets are provided, and means connecting each bracket to a respective side rail of the ladder.
  • a ladder attachment according to claim 1 wherein the spring means comprises a tension spring connected between the lower end portion of the rod means and the bracket.
  • a ladder attachment according to claim 4 wherein a stop collar is secured to the rod means and adapted to engage the end of the tubular portion to thereby limit the movement of the rod means upwardly through the tubular portion.
  • a ladder attachment according to claim I wherein the means for connecting the bracket to the ladder side rail comprises, a pair of straps, each strap having one s end secured to the bracket and the opposite end clamped to the ladder side rail.
  • bracket comprises a piece of sheet metal bent back upon itself to form the tubular portion along one edge thereof, the free ends of the sheet having inwardly bent flange portions engaging the inner edge of the ladder side rail.

Landscapes

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

Abstract

A ladder attachment including a spring biased rod adapted to frictionally engage the bottom surface of a building eaves, whereby the ladder is held in a substantially vertical, operative position relative to the building.

Description

Emie Siates met OHara 1 Jan. 23, 1973 1: LADDER ATTACHMENT 31,03,431 9/19'1 Nameche nu/:00 6] Inventor: Carl F- (yuara, PIO. BOX 1046, 3,208,555 9/1965 Fry ..l82/129 F01! Monl- 59442 FOREIGN PATENTS OR APPLICATIONS 1 FiledI 4, 1971 12,062 6/1908 Great Britain "182/107 [21] Appl. No.: 168,903
Primary ExammerRemaldo P. Machado AttorneyGardner J. OBoyle et al. [52] US. Cl ..182/l07, 182/214 [51] Int. Cl. ..E06c 7/48, 1306c 5/36 [57] ABSTRACT F Id 18 214,206,] [58] le 0 earch 182/ 108 93 A ladder attachment mcludmg a sprmg blased rod adapted to fncuonally engage the bottom surface of a [56] References Cited bulld mg eaves whereby the ladaer 15 held In a substantlally vertlcal, operatlve posmon relatlve to the UNITED STATES PATENTS building- 3,I3l,928 5/l964 Whipple ..248/356 7 Claims, 5 Drawing Figures LADDER ATTACHMENT BACKGROUND OF THE INVENTION In the normal use of a ladder, and more particularly 4 an extension ladder, when mounted in operative position against a building, the ladder is disposed in an inclined position relative to the building, whereby the upper end portion of the ladder is closer to the building than the lower end of the ladder. When a workman,
such as a painter, uses the ladder to paint the side of the building, he must continually adjust the position of the ladder relative to the building since, as his work proceeds downwardly along the side of the building, he becomes progressively further away from the building until he is in a position where he can no longer reach the side of the building. While the extension ladder may be used for performing work on the major part of the building side, a point is reached where it is impossible for the painter to use the ladder in the stable, inclined position and finish the work on the lower portion of the building wall; thus, requiring the use of a smaller ladder, such as a step ladder.
SUMMARY In order to overcome the disadvantage of continuously manipulating a ladder in the course of performing work on the side of a building, and to preclude the necessity of having a plurality of ladders of different sizes at the job site, the ladder attachment of the present invention has been devised which comprises, essentially, a bracket secured to each side frame or rail or an extension ladder. A rubber-tipped rod is slidably mounted in each bracket, and a tension spring is connected between each rod and its respective bracket, whereby the rods are biased upwardly toward the upper end of the ladder. By this construction and arrangement, the spring biased rods are adapted to frictionally engage the bottom surface of a building eaves whereby the ladder is held in a substantially vertical, operative position relative to the building.
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side elevational view showing the attachment of the present invention secured to an extension ladder disposed initially in an inclined position relative to a building;
FIG. 2 is a side elevational view of the ladder and associated attachment disposed in the operative, vertical position relative to the building;
FIG. 3 is a sectional view taken along line 3-3 of FIG. 2;
FIG. 4 is a view taken along line 4-4 ofFlG. 3; and
FIG. 5 is a fragmentary, sectional, top plan view showing another embodiment of the manner in which the attachment may be secured to a ladder having flanged side rails.
Referring to the drawings and more particularly to FIGS. 1 and 2, the attachment 1 of the present invention is shown mounted on an extension ladder 2 disposed adjacent a building 3.
The details of the construction of the attachment are illustrated in FIGS. 3 and 4 wherein it will be seen that each side rail 2a of the ladder has a bracket 4 secured thereto by suitable clamps 5, to be described more fully hereinafter. Each bracket 4 comprises a piece of sheet metal bent back upon itself to form a tubular portion 411 along one edge thereof, a plurality of bolts 6 extend through the sheet metal to hold the edge portion in a substantially tubular configuration. A rod 7 is slidably received in each of the tubular portions 4a of the bracket, each rod having a rubber tip 8 secured to the top end thereof and a collar 9 secured to the lower end portion thereof. A tension spring 10 is connected between the collar 9 and the bracket 4 whereby the rod is 'biased upwardly through the tubular portion 4a. Each rod 7 is provided with a stop'collar 11 which abuts the lower end of the tubular portion to thereby limit the upward movement of the rod.
The free edges of the bracket, that is, the edges of the bracket opposite from the tubular portion 4a, are bent inwardly to form flange portions 4b adapted to abut the inner edge portion 2b of the ladder side rail. The brackets are secured to the ladder side rails by straps 50 having their end portions secured to opposite faces of the bracket by suitable bolts 5b, the outer ends of the straps being secured to the ladder side rails by a clamping plate 5c secured to the straps by bolts 5d.
FIG. 5 illustrates another embodiment of securing the attachment of the present invention to a conventional extruded metal ladder having flanged side rails. On this type of ladder, the flanged portions 4b of the bracket 4 abut the inner surfaces 2c of the flanged side rail and are held thereon by the bolts 5b.
In the use of a ladder employing the attachment of the present invention, the ladder is first disposed in an inclined position as shown in FIG. 1, with the tip 8 of each rod 7 engaging the lower surface 3a of the building eaves. The lower end of the ladder is then moved toward the building to a substantially vertical position as shown in FIG. 2. As the lower end of the ladder is being moved toward the building, the rods 7 are caused to slide downwardly relative to their respective brackets against the biasing force of the springs. Through the biasing force of the springs 10 urging the rods 7 upwardly, the upper ends of the rods are frictionally held against the building eaves to thereby maintain the ladder in a substantially vertical position.
While the attachment has been shown attached to the upper end portion of the ladder, it can be mounted at other positions along the length of the ladder side rails depending upon the height of the building upon which the ladder is to be used.
It is to be understood that the form of the invention herewith shown and described is to be taken as a preferred example of the same, and that various changes in the shape, size and arrangement of parts may be resorted to, without departing from the spirit of the invention or scope of the subjoined claims.
lclaim:
l. A ladder attachment of the character described for holding a ladder in a substantially vertical, operative position against a building, comprising, rod means, at least one bracket carried by the ladder for slidably receiving said rod means, means connecting said bracket to the upper end portion of the ladder, a tubular portion formed on said bracket, said rod means being freely slidably in said tubular portion, and spring means mounted between said rod means and said bracket for biasing said rod means in'a longitudinal direction toward the upper end of the ladder, whereby the upper end of the rod means is biased against the lower surface of the building eaves to thereby hold the ladder in a substantially vertical, operative position.
2. A ladder attachment according to claim 1 wherein a rubber tip is mounted on the the upper ends of the rod means whereby the upper end of the rod means is frictionally held against the building eaves.
3. A ladder attachment according to claim 1 wherein a pair of brackets are provided, and means connecting each bracket to a respective side rail of the ladder.
4. A ladder attachment according to claim 1 wherein the spring means comprises a tension spring connected between the lower end portion of the rod means and the bracket.
5. A ladder attachment according to claim 4 wherein a stop collar is secured to the rod means and adapted to engage the end of the tubular portion to thereby limit the movement of the rod means upwardly through the tubular portion.
6. A ladder attachment according to claim I wherein the means for connecting the bracket to the ladder side rail comprises, a pair of straps, each strap having one s end secured to the bracket and the opposite end clamped to the ladder side rail.
7. A ladder attachment according to claim 1 wherein the bracket comprises a piece of sheet metal bent back upon itself to form the tubular portion along one edge thereof, the free ends of the sheet having inwardly bent flange portions engaging the inner edge of the ladder side rail.

Claims (7)

1. A ladder attachment of the character described for holding a ladder in a substantially vertical, operative position against a building, comprising, rod means, at least one bracket carried by the ladder for slidably receiving said rod means, means connecting said bracket to the upper end portion of the ladder, a tubular portion formed on said bracket, said rod means being freely slidable in said tubular portion, and spring means mounted between said rod means and said bracket for biasing said rod means in a longitudinal direction toward the upper end of the ladder, whereby the upper end of the rod means is biased against the lower surface of the building eaves to thereby hold the ladder in a substantially vertical, operative position.
2. A ladder attachment according to claim 1 wherein a rubber tip is mounted on the upper ends of the rod means whereby the upper end of the rod means is frictionally held against the building eaves.
3. A ladder attachment according to claim 1 wherein a pair of brackets are provided, and means connecting each bracket to a respective side rail of the ladder.
4. A ladder attachment according to claim 1 wherein the spring means comprises a tension spring connected between the lower end portion of the rod means and the bracket.
5. A ladder attachment according to claim 4 wherein a stop collar is secuRed to the rod means and adapted to engage the end of the tubular portion to thereby limit the movement of the rod means upwardly through the tubular portion.
6. A ladder attachment according to claim 1 wherein the means for connecting the bracket to the ladder side rail comprises, a pair of straps, each strap having one end secured to the bracket and the opposite end clamped to the ladder side rail.
7. A ladder attachment according to claim 1 wherein the bracket comprises a piece of sheet metal bent back upon itself to form the tubular portion along one edge thereof, the free ends of the sheet having inwardly bent flange portions engaging the inner edge of the ladder side rail.
US00168903A 1971-08-04 1971-08-04 Ladder attachment Expired - Lifetime US3712419A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US16890371A 1971-08-04 1971-08-04

Publications (1)

Publication Number Publication Date
US3712419A true US3712419A (en) 1973-01-23

Family

ID=22613428

Family Applications (1)

Application Number Title Priority Date Filing Date
US00168903A Expired - Lifetime US3712419A (en) 1971-08-04 1971-08-04 Ladder attachment

Country Status (1)

Country Link
US (1) US3712419A (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4143743A (en) * 1978-06-05 1979-03-13 Larson Dale W Eaves ladder grip
US4311209A (en) * 1978-02-06 1982-01-19 Eugenio Primerano Stepladders
GB2253002A (en) * 1991-01-30 1992-08-26 Haydon Deares Fascia board ladder clamp
GB2310682A (en) * 1996-02-27 1997-09-03 Joe Martin A ladder stabiliser
US6029774A (en) * 1998-12-07 2000-02-29 Cothern; Larry G. Ladder stabilizing assembly
US6244382B1 (en) 2000-04-13 2001-06-12 Leopold Labonte Attachment for stabilizing an extension ladder
FR2898934A1 (en) * 2006-03-22 2007-09-28 Michel Gautier Ladder stabilizing device for use by e.g. painter, in dwelling, has chain forming connection between jaw and lever locked on locking system, where locking system maintains jaw in closed position, and jaw is centered on top of ladder
US8316993B1 (en) 2008-05-14 2012-11-27 David Michael Rudd Ladder safety device and method of using the same
US9551183B2 (en) 2015-03-26 2017-01-24 David Michael Rudd Ladder safety device having a building clamp assembly and a ladder hook assembly

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB190812062A (en) * 1908-06-03 1908-08-06 Richard Turner Improvements in Gripping or Non-slipping Devices for Ladders.
US3131928A (en) * 1962-06-20 1964-05-05 Walter L Whipple Fixture holder
US3208555A (en) * 1964-05-19 1965-09-28 Fred C Fry Hoisting attachment for a ladder
US3603431A (en) * 1969-12-15 1971-09-07 Alfred E Nameche Ladder and support bracket therefor

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB190812062A (en) * 1908-06-03 1908-08-06 Richard Turner Improvements in Gripping or Non-slipping Devices for Ladders.
US3131928A (en) * 1962-06-20 1964-05-05 Walter L Whipple Fixture holder
US3208555A (en) * 1964-05-19 1965-09-28 Fred C Fry Hoisting attachment for a ladder
US3603431A (en) * 1969-12-15 1971-09-07 Alfred E Nameche Ladder and support bracket therefor

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4311209A (en) * 1978-02-06 1982-01-19 Eugenio Primerano Stepladders
US4143743A (en) * 1978-06-05 1979-03-13 Larson Dale W Eaves ladder grip
GB2253002A (en) * 1991-01-30 1992-08-26 Haydon Deares Fascia board ladder clamp
GB2253002B (en) * 1991-01-30 1994-08-17 Haydon Deares Fascia board ladder clamp
GB2310682A (en) * 1996-02-27 1997-09-03 Joe Martin A ladder stabiliser
US6029774A (en) * 1998-12-07 2000-02-29 Cothern; Larry G. Ladder stabilizing assembly
EP1008716A1 (en) 1998-12-07 2000-06-14 Larry G. Cothern Ladder stabilizing assembly
US6244382B1 (en) 2000-04-13 2001-06-12 Leopold Labonte Attachment for stabilizing an extension ladder
FR2898934A1 (en) * 2006-03-22 2007-09-28 Michel Gautier Ladder stabilizing device for use by e.g. painter, in dwelling, has chain forming connection between jaw and lever locked on locking system, where locking system maintains jaw in closed position, and jaw is centered on top of ladder
US8316993B1 (en) 2008-05-14 2012-11-27 David Michael Rudd Ladder safety device and method of using the same
US9551183B2 (en) 2015-03-26 2017-01-24 David Michael Rudd Ladder safety device having a building clamp assembly and a ladder hook assembly

Similar Documents

Publication Publication Date Title
US3712419A (en) Ladder attachment
US8376341B2 (en) Support device
US1658753A (en) Combination ladder step and support
US20170356245A1 (en) Roof mounted ladder safety bracket
US2272642A (en) Ridge wheel for ladders
CH630724A5 (en) LENGTH MEASURING DEVICE MADE OF AT LEAST TWO TELESCOPICALLY EXTENDABLE TUBES.
US710281A (en) Shingling carriage and gage.
US2636659A (en) Extension ladder
US1949820A (en) Scaffold
US1193307A (en) Painter s bucket
US1148919A (en) Roof scaffolding-bracket.
US1543551A (en) Safety bracket for ladders
EP2412893A2 (en) Mounting device
US4108277A (en) Work platform
DE20111459U1 (en) Device for ladders or similar racks
DE6608423U (en) SUPPORT FOR RADIATOR.
US809104A (en) Window-crane.
US821498A (en) Bracket for step-ladders and the like.
US593677A (en) Henry neddermann
US693641A (en) Staging bracket or support.
US723610A (en) Awning-fixture.
US1713935A (en) Window support
DE112739C (en)
US1496459A (en) Folding extension ladder
US1212696A (en) Adjustable shade-roller.