US3414079A - Toe-room aerial bucket with removable liner - Google Patents

Toe-room aerial bucket with removable liner Download PDF

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Publication number
US3414079A
US3414079A US649267A US64926767A US3414079A US 3414079 A US3414079 A US 3414079A US 649267 A US649267 A US 649267A US 64926767 A US64926767 A US 64926767A US 3414079 A US3414079 A US 3414079A
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Prior art keywords
sides
basket
liner
bucket
toe
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Expired - Lifetime
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US649267A
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Raymond J Wacht
George H Eckels
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PITMAN MANUFACTURING COMPANY Inc (PITMAN) A CORP OF
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AB Chance Co
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Assigned to PITMAN MANUFACTURING COMPANY, INC. (PITMAN), A CORP OF PA reassignment PITMAN MANUFACTURING COMPANY, INC. (PITMAN), A CORP OF PA ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: EMERSON ELECTRIC CO., A MO CORP., A.B. CHANCE COMPANY, A DE CORP.
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F11/00—Lifting devices specially adapted for particular uses not otherwise provided for
    • B66F11/04—Lifting devices specially adapted for particular uses not otherwise provided for for movable platforms or cabins, e.g. on vehicles, permitting workmen to place themselves in any desired position for carrying out required operations
    • B66F11/044—Working platforms suspended from booms

Definitions

  • the opposed sides diverge as the open top of the basket is approached to facilitate the insertion and removal of a polyethylene liner through the top.
  • the liner when in place, provides a composite bucket assembly of determinable insulation value having the same amount of toe room as is available when the liner is removed.
  • a comfortable working station is to be provided in an aerial bucket, it is requisite that a space be provided at the bottom of the bucket for the workmans toes. Otherwise, due to toe interference, the workman is forced to lean against the side of the bucket and hence work from an unbalanced position.
  • a prior approach to the toe-room problem was to provide a bucket having a bulge adjacent its bottom for accommodating the workmans toes.
  • Another previous approach was to provide an inwardly extending rail at the top of the bucket, an obvious disadvantage being that the length of the workmans reach was effectively shortened.
  • Neither of these arrangements are satisfactory when it is necessary to insert an insulated liner into the bucket for insulated tool or rubber glove work on energized lines since, in either case, the liner cannot be shaped to provide toe room and still be readily inserted and removed.
  • the primary object of this invention to provide an aerial bucket having a removable liner and which, when the liner is either inserted or removed, provides toe room for the workman.
  • an aerial bucket as aforesaid having an outer basket with sloping sides which provide toe-room for the workman and also permit the insertion and removal of an insulating liner through the open top of the basket.
  • FIGURE 1 is a fragmentary plan View illustrating the buckets of the instant invention attached to the upper end of the boom of an articulated aerial lift;
  • FIG. 2 is a side elevational view of the left-hand bucket shown in FIG. 1;
  • FIG. 3 is a plan view of the bucket illustrated in FIG. 2;
  • FIG. 4 is a rear elevational view of the bucket.
  • FIG. 5 is a vertical, sectional view taken along line 5-5 of FIG. 2.
  • FIG. 1 An aerial support in the form of a boom is illustrated fragmentarily in FIG. 1, a pair of aerial buckets 12 and 12a being attached to the upper end of support 10.
  • the left-hand bucket 12 provides a forward working station 14 and a side working station 16, while the right-hand bucket 1201 provides a forward working station 14a and a side working station 16a.
  • the left-hand bucket 12 is shown in detail in FIGS. 2-5, the right-hand bucket 12a being identical in construction to bucket 12 except that its front and rear sides are reversed with respect to bucket 12 in ice order to provide the working station 14a at the front of the bucket rather than at the rear thereof.
  • Bucket 12 comprises an outer basket 18 of polygonal cross-sectional configuration as is clear in FIG. 3.
  • Basket 18 has an open top 20, a pair of opposed, sloping, laterally facing sides 22 and 24, a pair of opposed, forwardly and rearwardly facing sides 26 and 28, and a rectangular bottom 30 having rounded corners.
  • Sides 22 and 24 are inclined in the same direction with side 22 being disposed at a lesser degree of inclination.
  • sides 26 and 28 ar inclined to the rear with the rearward side 28 having the lesser inclination.
  • the opposed sides of basket 18 diverge as the open top 20 thereof is approached.
  • Sides 22 and 28 are joined by an elongated, triangular corner section 32, a corner section 34 of like configuration joining sides 24 and 28.
  • a pair of upright ribs 36 on side 28 are provided with mounting holes 38 and provide a means of securing basket 18 to support 10 in the conventional manner.
  • Each of the sides 22-28 have parallel, upper and lower edges, the upper edges of the four sides and the base of each of the corner sections 32 and 34 providing a continuous, horizontal rim 40 defining the top 20 of basket 18.
  • the lower edges of the four sides merge with bottom 30 at the periphery 42 thereof.
  • a removable liner 44 is shown inserted within basket 18, liner 44 having a wall structure complemental to the interior surfaces of the sides and corner sections of basket 18.
  • opposed liner walls 46 and 48 are in surface contact with sides 22 and 24 respectively
  • opposed liner walls 50 and 52 are in surface contact with sides 26 and 28 respectively.
  • a close fit between the liner walls and the sides of the basket is not required.
  • Basket 18 is composed of a fiber glass reinforced, synthetic resin lay-up. Although this construction imparts structural strength to basket 18 and does provide the basket itself with a limited insulation value, the possibility of a void in the lay-up exists. The presence of a void could cause an electrical puncture of the basket by the establishment of an ionization path through the lay-up.
  • Liner 44 therefore, is composed of a material having a relatively high insulating strength, such as polyethylene or a similar synthetic resin substance, to impart a positive, determinable insulation value to the composite basket and liner assembly.
  • a toe-room aerial bucket comprising:
  • a basket provided with means for securing the basket to an aerial support
  • said basket having an open top, a normally horizontal bottom, and a pair of opposed, sloping sides extending upwardly from said bottom and inclined in the same direction;
  • said sides being spaced apart at said top a distance at least equal to the spacing therebetween at said bottom, whereby to permit insertion of the liner into the basket and removal therefrom through said top.
  • said liner having a pair of opposed walls complemental to said sides and substantially in surface contact with respective sides when the liner is in the basket.
  • said basket being of polygonal configuration and having a second pair of opposed, sloping sides extending upwardly from said bottom and inclined in a second direction, whereby to provide toe-room working stations at two of the sides of the basket,
  • the spacing between said second pair of sides at said top being at least equal to the spacing therebetween at said bottom.
  • said liner having two pairs of opposed Walls complemental to said sides and substantially in surface contact with respective sides when the liner is in the basket.
  • said bottom being of generally rectangular configuration and joined to said lower edges at the periphery of the bottom
  • said basket having a pair of corner sections of elongated
  • said liner having a base overlying said bottom and wall structure complemental to said sides and sections and substantially in surface contact therewith when the liner is in the basket.
  • said basket being composed of a structurally strong, fiber glass reinforced, synthetic resin substance
  • said material being a synthetic resin having a relatively high insulating strength.

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Forklifts And Lifting Vehicles (AREA)

Description

Diem 3,1968 R. J. WACHT ETAL TOE-ROOM AERIAL BUCKET WITH REMOVABLE LINER Filed me 27, 1967 United States Patent 3,414,079 TOE-ROOM AERIAL BUCKET WITH REMOVABLE LINER Raymond J. Wacht, Overland Park, and George H. Eckels, Prairie Village, Kans., assignors, by mesne assignments, to A. B. Chance Company, Centralia, Mo., a corporation of Missouri Filed June 27, 1967, Ser. No. 649,267 6 Claims. (Cl. 182-46) ABSTRACT OF THE DISCLOSURE An aerial basket is provided having four major sides, each pair of opposed sides being inclined in the same direction to provide two working stations with normal toe room. The opposed sides diverge as the open top of the basket is approached to facilitate the insertion and removal of a polyethylene liner through the top. The liner, when in place, provides a composite bucket assembly of determinable insulation value having the same amount of toe room as is available when the liner is removed.
If a comfortable working station is to be provided in an aerial bucket, it is requisite that a space be provided at the bottom of the bucket for the workmans toes. Otherwise, due to toe interference, the workman is forced to lean against the side of the bucket and hence work from an unbalanced position.
A prior approach to the toe-room problem was to provide a bucket having a bulge adjacent its bottom for accommodating the workmans toes. Another previous approach was to provide an inwardly extending rail at the top of the bucket, an obvious disadavantage being that the length of the workmans reach was effectively shortened. Neither of these arrangements are satisfactory when it is necessary to insert an insulated liner into the bucket for insulated tool or rubber glove work on energized lines since, in either case, the liner cannot be shaped to provide toe room and still be readily inserted and removed.
It is, therefore, the primary object of this invention to provide an aerial bucket having a removable liner and which, when the liner is either inserted or removed, provides toe room for the workman.
As a corollary to the foregoing object, it is an important aim of the instant invention to provide an aerial bucket as aforesaid having an outer basket with sloping sides which provide toe-room for the workman and also permit the insertion and removal of an insulating liner through the open top of the basket.
In the drawing:
FIGURE 1 is a fragmentary plan View illustrating the buckets of the instant invention attached to the upper end of the boom of an articulated aerial lift;
FIG. 2 is a side elevational view of the left-hand bucket shown in FIG. 1;
FIG. 3 is a plan view of the bucket illustrated in FIG. 2;
FIG. 4 is a rear elevational view of the bucket; and
FIG. 5 is a vertical, sectional view taken along line 5-5 of FIG. 2.
An aerial support in the form of a boom is illustrated fragmentarily in FIG. 1, a pair of aerial buckets 12 and 12a being attached to the upper end of support 10. The left-hand bucket 12 provides a forward working station 14 and a side working station 16, while the right-hand bucket 1201 provides a forward working station 14a and a side working station 16a. The left-hand bucket 12 is shown in detail in FIGS. 2-5, the right-hand bucket 12a being identical in construction to bucket 12 except that its front and rear sides are reversed with respect to bucket 12 in ice order to provide the working station 14a at the front of the bucket rather than at the rear thereof.
Bucket 12 comprises an outer basket 18 of polygonal cross-sectional configuration as is clear in FIG. 3. Basket 18 has an open top 20, a pair of opposed, sloping, laterally facing sides 22 and 24, a pair of opposed, forwardly and rearwardly facing sides 26 and 28, and a rectangular bottom 30 having rounded corners. Sides 22 and 24 are inclined in the same direction with side 22 being disposed at a lesser degree of inclination. Similarly, sides 26 and 28 ar inclined to the rear with the rearward side 28 having the lesser inclination. Thus, the opposed sides of basket 18 diverge as the open top 20 thereof is approached.
Sides 22 and 28 are joined by an elongated, triangular corner section 32, a corner section 34 of like configuration joining sides 24 and 28. A pair of upright ribs 36 on side 28 are provided with mounting holes 38 and provide a means of securing basket 18 to support 10 in the conventional manner.
Each of the sides 22-28 have parallel, upper and lower edges, the upper edges of the four sides and the base of each of the corner sections 32 and 34 providing a continuous, horizontal rim 40 defining the top 20 of basket 18. The lower edges of the four sides merge with bottom 30 at the periphery 42 thereof.
A removable liner 44 is shown inserted within basket 18, liner 44 having a wall structure complemental to the interior surfaces of the sides and corner sections of basket 18. As is clear in FIG. 5, opposed liner walls 46 and 48 are in surface contact with sides 22 and 24 respectively, and opposed liner walls 50 and 52 are in surface contact with sides 26 and 28 respectively. However, a close fit between the liner walls and the sides of the basket is not required.
Basket 18 is composed of a fiber glass reinforced, synthetic resin lay-up. Although this construction imparts structural strength to basket 18 and does provide the basket itself with a limited insulation value, the possibility of a void in the lay-up exists. The presence of a void could cause an electrical puncture of the basket by the establishment of an ionization path through the lay-up. Liner 44, therefore, is composed of a material having a relatively high insulating strength, such as polyethylene or a similar synthetic resin substance, to impart a positive, determinable insulation value to the composite basket and liner assembly.
It is apparent that, by virtue of the sloping sides 24 and 26, normal toe-room is provided for a workman standing on bottom 30, the workmans reach beyond rim 40 being unimpaired. Due to the lesser inclination of the sides 22 and 28, liner 44 is readily inserted or removed as needed. When inserted, the base 54 of liner 44 overlies and is supported by bottom 30. The workman stands on base 54, but the available toe-room in the bucket is in no way restricted by the liner since its walls are in surface contact with the sides and corner sections of basket 18 throughout the vertical expanse of the basket above bottom 30'.
Having thus described the invention, what is claimed as new and desired to be secured by Letters Patent is:
1. A toe-room aerial bucket comprising:
a basket provided with means for securing the basket to an aerial support,
said basket having an open top, a normally horizontal bottom, and a pair of opposed, sloping sides extending upwardly from said bottom and inclined in the same direction; and
a removable liner of insulating material in said basket,
said sides being spaced apart at said top a distance at least equal to the spacing therebetween at said bottom, whereby to permit insertion of the liner into the basket and removal therefrom through said top.
2. The invention of claim 1:
said sides diverging as said top is approached,
said liner having a pair of opposed walls complemental to said sides and substantially in surface contact with respective sides when the liner is in the basket.
3. The invention of claim 1:
said basket being of polygonal configuration and having a second pair of opposed, sloping sides extending upwardly from said bottom and inclined in a second direction, whereby to provide toe-room working stations at two of the sides of the basket,
the spacing between said second pair of sides at said top being at least equal to the spacing therebetween at said bottom.
4. The invention of claim 3:
each of said pairs of sides diverging as said top is approached,
said liner having two pairs of opposed Walls complemental to said sides and substantially in surface contact with respective sides when the liner is in the basket.
5. The invention of claim 3:
each of said pairs of sides diverging as said top is approached,
all of said sides having parallel, upper and lower edges,
said bottom being of generally rectangular configuration and joined to said lower edges at the periphery of the bottom,
said basket having a pair of corner sections of elongated,
generally triangular configuration,
one of said sections interconnecting the side of the first-mentioned pair and the side of said second pair of lesser inclination,
the other of said sections interconnecting one of said lesser inclined sides and the adjacent side of greater inclination,
said liner having a base overlying said bottom and wall structure complemental to said sides and sections and substantially in surface contact therewith when the liner is in the basket.
6. The invention of claim 1:
said basket being composed of a structurally strong, fiber glass reinforced, synthetic resin substance,
said material being a synthetic resin having a relatively high insulating strength.
References Cited UNITED STATES PATENTS 3,022,854 2/1962 Eckels et a1. 1822 3,087,581 4/1963 Pitman 18246 3,139,948 7/1964 Rorden 18246 3,146,853 9/1964 Eckels l8246 3,159,240 12/1964 Miller 182-46 3,169,602 2/1965 Myers 18246 30 REINALDO P. MACHADO, Primaly Examiner.
US649267A 1967-06-27 1967-06-27 Toe-room aerial bucket with removable liner Expired - Lifetime US3414079A (en)

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Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3625305A (en) * 1969-06-02 1971-12-07 Viking Engineering And Mfg Inc Transport basket and method of producing the same
US3642096A (en) * 1970-09-23 1972-02-15 Ohio Brass Co Insulating liner for man-carrying buckets
US3917026A (en) * 1975-01-16 1975-11-04 Cam Ind Inc Aerial platform utility enclosure assembly
US4254846A (en) * 1979-05-24 1981-03-10 Soave Davide A Apparatus and method for removing liners from their outer containers
US4763758A (en) * 1986-12-22 1988-08-16 Plastic Techniques, Inc. Scuff pad with step
US8899380B2 (en) 2012-11-20 2014-12-02 Altec Industries, Inc. System for restraining a worker at a utility platform of an aerial device
US9851048B2 (en) * 2015-03-27 2017-12-26 Altec Industries, Inc. Liner retention system for an aerial device
US20210039933A1 (en) * 2016-06-10 2021-02-11 Altec Industries, Inc. Modular rib for elevating platform
US11014795B2 (en) 2017-07-28 2021-05-25 Altec Industries, Inc. Elevating platform toe space
US20210214204A1 (en) * 2016-06-10 2021-07-15 Altec Industries, Inc. Modular rib for elevating platform
US20210292147A1 (en) * 2017-10-05 2021-09-23 MCF Distributing, LLC Shield assembly for basket of aerial work platform
US20230002207A1 (en) * 2021-06-30 2023-01-05 Altec Industries, Inc. Integrally formed aerial platform
US20240109761A1 (en) * 2022-10-04 2024-04-04 Altec Industries, Inc. Electrical insulation liner for aerial lift platform door
US12187588B2 (en) 2016-06-10 2025-01-07 Altec Industries, Inc. Modular rib
US12429162B2 (en) 2016-06-10 2025-09-30 Altec Industries, Inc. Mounting system for elevating platform

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3022854A (en) * 1960-07-28 1962-02-27 Holan Corp Mobile aerial tower
US3087581A (en) * 1960-03-07 1963-04-30 Pitman Mfg Company Fiberglas structural member and method of making same
US3139948A (en) * 1961-04-25 1964-07-07 Harold L Rorden Method and apparatus for working energized conductors
US3146853A (en) * 1961-12-29 1964-09-01 Ohio Brass Co Boom extension
US3159240A (en) * 1961-08-22 1964-12-01 Ohio Brass Co Aerial lifts for energized line working
US3169602A (en) * 1962-06-07 1965-02-16 Mobile Aerial Towers Inc Mobile aerial tower structure

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3087581A (en) * 1960-03-07 1963-04-30 Pitman Mfg Company Fiberglas structural member and method of making same
US3022854A (en) * 1960-07-28 1962-02-27 Holan Corp Mobile aerial tower
US3139948A (en) * 1961-04-25 1964-07-07 Harold L Rorden Method and apparatus for working energized conductors
US3159240A (en) * 1961-08-22 1964-12-01 Ohio Brass Co Aerial lifts for energized line working
US3146853A (en) * 1961-12-29 1964-09-01 Ohio Brass Co Boom extension
US3169602A (en) * 1962-06-07 1965-02-16 Mobile Aerial Towers Inc Mobile aerial tower structure

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3625305A (en) * 1969-06-02 1971-12-07 Viking Engineering And Mfg Inc Transport basket and method of producing the same
US3642096A (en) * 1970-09-23 1972-02-15 Ohio Brass Co Insulating liner for man-carrying buckets
US3917026A (en) * 1975-01-16 1975-11-04 Cam Ind Inc Aerial platform utility enclosure assembly
US4254846A (en) * 1979-05-24 1981-03-10 Soave Davide A Apparatus and method for removing liners from their outer containers
US4763758A (en) * 1986-12-22 1988-08-16 Plastic Techniques, Inc. Scuff pad with step
US20150075906A1 (en) * 2012-11-20 2015-03-19 Altec Industries, Inc. System for restraining a worker at a utility platform of an aerial device
US9221660B2 (en) * 2012-11-20 2015-12-29 Altec Industries, Inc. System for restraining a worker at a utility platform of an aerial device
US8899380B2 (en) 2012-11-20 2014-12-02 Altec Industries, Inc. System for restraining a worker at a utility platform of an aerial device
US9851048B2 (en) * 2015-03-27 2017-12-26 Altec Industries, Inc. Liner retention system for an aerial device
US12172874B2 (en) * 2016-06-10 2024-12-24 Altec Industries, Inc. Modular rib for elevating platform
US20210039933A1 (en) * 2016-06-10 2021-02-11 Altec Industries, Inc. Modular rib for elevating platform
US20210214204A1 (en) * 2016-06-10 2021-07-15 Altec Industries, Inc. Modular rib for elevating platform
US12429162B2 (en) 2016-06-10 2025-09-30 Altec Industries, Inc. Mounting system for elevating platform
US12258245B2 (en) 2016-06-10 2025-03-25 Altec Industries, Inc. Step system for elevating platform
US12187588B2 (en) 2016-06-10 2025-01-07 Altec Industries, Inc. Modular rib
US11014795B2 (en) 2017-07-28 2021-05-25 Altec Industries, Inc. Elevating platform toe space
US20210292147A1 (en) * 2017-10-05 2021-09-23 MCF Distributing, LLC Shield assembly for basket of aerial work platform
US20230002207A1 (en) * 2021-06-30 2023-01-05 Altec Industries, Inc. Integrally formed aerial platform
US20240294368A1 (en) * 2022-10-04 2024-09-05 Altec Industries, Inc. Electrical insulation liner for aerial lift platform door
US20240109761A1 (en) * 2022-10-04 2024-04-04 Altec Industries, Inc. Electrical insulation liner for aerial lift platform door
US12280994B2 (en) * 2022-10-04 2025-04-22 Altec Industries, Inc. Electrical insulation liner for aerial lift platform door

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Owner name: PITMAN MANUFACTURING COMPANY, INC. (PITMAN), A COR

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNORS:A.B. CHANCE COMPANY, A DE CORP.;EMERSON ELECTRIC CO., AMO CORP.;REEL/FRAME:004202/0425;SIGNING DATES FROM 19830914 TO 19830919