US3890696A - Tow truck boom and method of constructing same - Google Patents
Tow truck boom and method of constructing same Download PDFInfo
- Publication number
- US3890696A US3890696A US359104A US35910473A US3890696A US 3890696 A US3890696 A US 3890696A US 359104 A US359104 A US 359104A US 35910473 A US35910473 A US 35910473A US 3890696 A US3890696 A US 3890696A
- Authority
- US
- United States
- Prior art keywords
- members
- channel
- boom
- shaped
- bending
- 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
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D47/00—Making rigid structural elements or units, e.g. honeycomb structures
- B21D47/01—Making rigid structural elements or units, e.g. honeycomb structures beams or pillars
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/0026—Arc welding or cutting specially adapted for particular articles or work
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60P—VEHICLES ADAPTED FOR LOAD TRANSPORTATION OR TO TRANSPORT, TO CARRY, OR TO COMPRISE SPECIAL LOADS OR OBJECTS
- B60P3/00—Vehicles adapted to transport, to carry or to comprise special loads or objects
- B60P3/28—Vehicles adapted to transport, to carry or to comprise special loads or objects for transporting cranes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
- B66C23/64—Jibs
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49616—Structural member making
- Y10T29/49622—Vehicular structural member making
Definitions
- a tow truck includes a pair of booms comprised of two identical channel-shaped members being secured together in face-to'face relationship to form a space therebetween.
- Each of the members includes serrations in the side walls in a common transverse plane at the center of the boom and the serrations are closed by weldments.
- the boom is constructed by taking a blank sheet of rectangular material and shaping it to taper it from the transverse center to the outer ends along all of its edges and providing inwardly shaping V-shaped notches along the transverse centerline.
- a wrecker truck will usually include two boom members. These members must be rugged and strong as they are the backbone of the wrecker equipment. At the same time they must be aesthetically attractive and have eye appeal. They should also be smooth to allow for ease of cleaning and painting. To overcome the ten dency of the boom members to buckle in the center, they may be beefed up in the center area by that area being larger in cross section than the outer ends. To produce a boom-shaped member having a nonuniform cross section requires special construction procedures.
- the boom of this invention is easily fabricated with a minimum expenditure of time and materials.
- the boom member is square in cross section throughout its length but increases in cross section from the outer ends toward a transverse center plane.
- Two channel members are first formed and notches are provided in the side walls at the transverse center plane such that when the ends of the channel members are bent towards each other the V-shaped notches are closed and the side wall edges move into engagement whereupon they are welded to provide a totally enclosed boom.
- the boom is nonuniform in cross section throughout its length it nevertheless is constructed from only two separate members.
- FIG. 1 is a perspective view of a wrecker truck utilizing the boom members of this invention.
- FIG. 2 is a top plan view of a blank sheet of metal material shaped for construction of the boom.
- FIG. 3 is a side elevational view of the blank sheet of material after the bending step wherein channel side walls have been formed.
- FIG. 4 is a later side elevational view wherein the two channel-shaped members are placed in facing relationship with a pair of adjacent ends being held together while the opposite ends are separated.
- FIG. 5 is a further side elevational view after the opposite ends of the channel members are drawn together and secured by welding.
- FIG. 6 is a top plan view taken along line 6-6 in FIG. 5.
- FIG. 7 is a cross sectional view taken along line 77 in FIG. 6.
- the boom members of this invention are referred to generally in FIG. 1 by the reference numeral 10 and are shown on a truck 12 having wrecker equipment 14 thereon.
- boom members 10 are not uniform in cross section along their length having their biggest cross section at the center and the cross section decreases towards the opposite ends thereof.
- the boom is hollow throughout its entire length and comprises only two separate elements, two channel-shaped members l6 and 18 as seen in FIG. 4.
- Each of the channel-shaped members are identical and are formed following the same method steps.
- First a blank sheet of rectangular in shape material is shaped to provide the configuration in FIG. 2 wherein the side edges 20 all taper from a transverse center fold line 22 towards the outer ends 24.
- Inwardly extending V- shaped notches 26 are provided on the transverse centerline 22 such that when the channel side walls 28 of FIG. 3 are formed by bending the V-shaped notches extend from the outer side wall edges to the base portion 30 of the channel-shaped member.
- the two channelshaped members are placed in facing relationship as seen in FIG. 4 with one pair of ends engaging each other along the side wall edges and weldments 32 are utilized for securing the adjacent ends 32 together.
- each channel member includes side walls which increase in height from the outer ends of the members towards the center and a V-shaped notch is provided at the center of each side wall, said notch having its vertex at the base of the channel,
- each of said members is further defined as including first placing the adjacent edges of adjacent ends of said members in engagement with each other and then holding said adjacent ends while the opposite ends are drawn together causing said members to be bent along said fold line.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Transportation (AREA)
- Jib Cranes (AREA)
Abstract
A tow truck includes a pair of booms comprised of two identical channel-shaped members being secured together in face-to-face relationship to form a space therebetween. Each of the members includes serrations in the side walls in a common transverse plane at the center of the boom and the serrations are closed by weldments. The boom is constructed by taking a blank sheet of rectangular material and shaping it to taper it from the transverse center to the outer ends along all of its edges and providing inwardly shaping V-shaped notches along the transverse centerline. Side walls are then formed by bending and then the resulting two channel-shaped members are placed in edge-to-edge engagement along one end and held in this position by welding while the opposite ends are drawn together such that bending occurs in a plane through the vertexes of the V-shaped notches and the notches are closed. All abutting edges are then welded together to complete the boom.
Description
United States Patent [1 1 Buske June 24, 1975 I TOW TRUCK BOOM AND METHOD OF CONSTRUCTING SAME [76] Inventor: Earl R. Buske, 206 Fourth Ave.,
Pocahontas, Iowa 50574 [22] Filed: May 10, 1973 [21] Appl. No.: 359,104
Primary ExaminerFrancis S. Husar Assistant ExaminerGus T. l-Iampilos Attorney, Agent, or Firm-Zarley, McKee, Thomte & Voorhees [5 7] ABSTRACT A tow truck includes a pair of booms comprised of two identical channel-shaped members being secured together in face-to'face relationship to form a space therebetween. Each of the members includes serrations in the side walls in a common transverse plane at the center of the boom and the serrations are closed by weldments. The boom is constructed by taking a blank sheet of rectangular material and shaping it to taper it from the transverse center to the outer ends along all of its edges and providing inwardly shaping V-shaped notches along the transverse centerline. Side walls are then formed by bending and then the resulting two channel-shaped members are placed in edgeto-edge engagement along one end and held in this position by welding while the opposite ends are drawn together such that bending occurs in a plane through the vertexes of the V-shaped notches and the notches are closed. All abutting edges are then welded together to complete the boom.
5 Claims, 7 Drawing Figures TOW TRUCK BOOM AND METHOD OF CONSTRUCTING SAME A wrecker truck will usually include two boom members. These members must be rugged and strong as they are the backbone of the wrecker equipment. At the same time they must be aesthetically attractive and have eye appeal. They should also be smooth to allow for ease of cleaning and painting. To overcome the ten dency of the boom members to buckle in the center, they may be beefed up in the center area by that area being larger in cross section than the outer ends. To produce a boom-shaped member having a nonuniform cross section requires special construction procedures.
The boom of this invention is easily fabricated with a minimum expenditure of time and materials. The boom member is square in cross section throughout its length but increases in cross section from the outer ends toward a transverse center plane. Two channel members are first formed and notches are provided in the side walls at the transverse center plane such that when the ends of the channel members are bent towards each other the V-shaped notches are closed and the side wall edges move into engagement whereupon they are welded to provide a totally enclosed boom. Thus, although the boom is nonuniform in cross section throughout its length it nevertheless is constructed from only two separate members.
This invention consists in the construction, arrangements and combination of the various parts of the device, whereby the objects contemplated are attained as hereinafter more fully set forth, specifically pointed out in the claims, and illustrated in the accompanying drawings in which:
FIG. 1 is a perspective view of a wrecker truck utilizing the boom members of this invention.
FIG. 2 is a top plan view of a blank sheet of metal material shaped for construction of the boom.
FIG. 3 is a side elevational view of the blank sheet of material after the bending step wherein channel side walls have been formed.
FIG. 4 is a later side elevational view wherein the two channel-shaped members are placed in facing relationship with a pair of adjacent ends being held together while the opposite ends are separated.
FIG. 5 is a further side elevational view after the opposite ends of the channel members are drawn together and secured by welding; and
FIG. 6 is a top plan view taken along line 6-6 in FIG. 5.
FIG. 7 is a cross sectional view taken along line 77 in FIG. 6.
The boom members of this invention are referred to generally in FIG. 1 by the reference numeral 10 and are shown on a truck 12 having wrecker equipment 14 thereon.
It is seen that the boom members 10 are not uniform in cross section along their length having their biggest cross section at the center and the cross section decreases towards the opposite ends thereof. The boom is hollow throughout its entire length and comprises only two separate elements, two channel-shaped members l6 and 18 as seen in FIG. 4.
Each of the channel-shaped members are identical and are formed following the same method steps. First a blank sheet of rectangular in shape material is shaped to provide the configuration in FIG. 2 wherein the side edges 20 all taper from a transverse center fold line 22 towards the outer ends 24. Inwardly extending V- shaped notches 26 are provided on the transverse centerline 22 such that when the channel side walls 28 of FIG. 3 are formed by bending the V-shaped notches extend from the outer side wall edges to the base portion 30 of the channel-shaped member. Next, the two channelshaped members are placed in facing relationship as seen in FIG. 4 with one pair of ends engaging each other along the side wall edges and weldments 32 are utilized for securing the adjacent ends 32 together. Next, the opposite ends 34 are drawn together resulting in the Vshaped notches being closed as seen in FIG. 5 and the outer edges of the side walls 28 moving into engagementwith each other identical to the ends 32 and weldments 31 are also employed to hold the ends 34 together. The result of these steps is a completed boom 10 as seen in FIG. 6 formed from only two pieces of material and being square in cross section and hollow throughout its length while having a cross section which increases from the outer ends toward the transverse center which is in a plane through the vertexes of the V-shaped notches 26 and on the foldlines 22. This provides the maximum strength in the center where it is needed and also provides a boom member having aesthetically appealing lines. All abutting edges are secured together by weldments.
I claim:
1. Method of constructing a boom having a cross sectional area that increases from the opposite ends towards the center comprising the steps of,
providing a pair of channel-shaped members in faceto-face relationship wherein each channel member includes side walls which increase in height from the outer ends of the members towards the center and a V-shaped notch is provided at the center of each side wall, said notch having its vertex at the base of the channel,
bending of the base of each of said members along a fold line extending across the base of each member and through the vertexes of said V-shaped notches to bring said members into engagement along the edges of their adjacent side walls, and
bonding together the adjacent edges of said members.
2. The method of claim 1 wherein said bonding of said adjacent edges of said members is further defined as being welding.
3. The method of claim 1 wherein the bending of each of said members is further defined as including first placing the adjacent edges of adjacent ends of said members in engagement with each other and then holding said adjacent ends while the opposite ends are drawn together causing said members to be bent along said fold line.
4. The method of claim 1 wherein said providing of said pair of channel members is further defined as including the steps of first providing a pair of rectangular blank sheets, tapering the blank sheets along opposite side edges in opposite directions from the transverse centerline towards the outer ends, and then bending the sheets to form said channel-shaped members.
5. The method of claim 4 wherein the steps of forming said V-shaped notches is performed prior to bending the sheets to form said channel members.
Claims (5)
1. Method of constructing a boom having a cross sectional area that increases from the opposite ends towards the center comprising the steps of, providing a pair of channel-shaped members in face-to-face relationship wherein each channel member includes side walls which increase in height from the outer ends of the members towards the center and a V-shaped notch is provided at the center of each side wall, said notch having its vertex at the base of the channel, bending of the base of each of said members along a fold line extending across the base of each member and through the vertexes of said V-shaped notches to bring said members into engagement along the edges of their adjacent side walls, and bonding together the adjacent edges of said members.
2. The method of claim 1 wherein said bonding of said adjacent edges of said members is further defined as being welding.
3. The method of claim 1 wherein the bending of each of said members is further defined as including first placing the adjacent edges of adjacent ends of said members in engagement with each other and then holding said adjacent ends while the opposite ends are drawn together causing said members to be bent along said fold line.
4. The method of claim 1 wherein said providing of said pair of channel members is further defined as including the steps of first providing a pair of rectangular blank sheets, tapering the blank sheets along opposite side edges in opposite directions from the transverse centerline towards the outer ends, and then bending the sheets to form said channel-shaped members.
5. The method of claim 4 wherein the steps of forming said V-shaped notches is performed prior to bending the sheets to form said channel members.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US359104A US3890696A (en) | 1973-05-10 | 1973-05-10 | Tow truck boom and method of constructing same |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US359104A US3890696A (en) | 1973-05-10 | 1973-05-10 | Tow truck boom and method of constructing same |
Publications (1)
Publication Number | Publication Date |
---|---|
US3890696A true US3890696A (en) | 1975-06-24 |
Family
ID=23412316
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US359104A Expired - Lifetime US3890696A (en) | 1973-05-10 | 1973-05-10 | Tow truck boom and method of constructing same |
Country Status (1)
Country | Link |
---|---|
US (1) | US3890696A (en) |
Cited By (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4714287A (en) * | 1985-03-23 | 1987-12-22 | Daimler-Benz Aktiengesellschaft | Bending bar to be used as a bumper of a vehicle |
US5111578A (en) * | 1989-11-22 | 1992-05-12 | Ford New Holland, Inc. | Method of manufacturing a backhoe boom |
US5152659A (en) * | 1989-12-13 | 1992-10-06 | Kubota Corporation | Boom assembly for work machine |
US5599158A (en) * | 1994-11-28 | 1997-02-04 | Caterpillar Inc. | Linkage arrangement for a wheel loader |
US5723707A (en) * | 1993-01-04 | 1998-03-03 | Chevron Chemical Company | Dehydrogenation processes, equipment and catalyst loads therefor |
US5984618A (en) * | 1997-06-30 | 1999-11-16 | Caterpillar Inc. | Box boom loader mechanism |
US5993139A (en) * | 1997-06-30 | 1999-11-30 | Caterpillar Inc. | Box boom lift arm assembly |
US6527496B2 (en) * | 2000-05-05 | 2003-03-04 | Deere & Company | Loader boom reinforcement |
US6588084B2 (en) * | 2000-09-16 | 2003-07-08 | Daimlerchrysler Ag | Process for producing a circumferentially closed hollow profile |
US20050161979A1 (en) * | 2004-01-23 | 2005-07-28 | Chernoff Adrian B. | Vehicle body compartment lid having unitary inner panel and outer panel |
US20060096099A1 (en) * | 2003-05-08 | 2006-05-11 | Noble Metal Processing, Inc. | Automotive crush tip and method of manufacturing |
EP2118553A2 (en) * | 2007-02-09 | 2009-11-18 | Industrial Origami, Inc. | Load-bearing three-dimensional structure |
JP2014161874A (en) * | 2013-02-25 | 2014-09-08 | Okita Seisakusho:Kk | Metal box body and method of manufacturing the same |
EP3251998A1 (en) * | 2016-06-03 | 2017-12-06 | Liebherr-Werk Ehingen GmbH | Boom profile for the boom of a telescopic crane |
US10137812B2 (en) * | 2009-05-08 | 2018-11-27 | Thyssenkrupp Steel Europe Ag | Backrest frame for a vehicle seat |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1694430A (en) * | 1927-01-24 | 1928-12-11 | Brown Co | Tubular bend and method of making same |
US2418312A (en) * | 1944-08-12 | 1947-04-01 | Michelman Nathan | Method of making tapered tubes |
US3039414A (en) * | 1960-05-31 | 1962-06-19 | Rosanes Jacob | Method of producing hollow four-sided tapering beams or columns from sheet metal |
US3762448A (en) * | 1966-09-07 | 1973-10-02 | Struthers Scientific Int Corp | Thick walled pressure vessel |
-
1973
- 1973-05-10 US US359104A patent/US3890696A/en not_active Expired - Lifetime
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1694430A (en) * | 1927-01-24 | 1928-12-11 | Brown Co | Tubular bend and method of making same |
US2418312A (en) * | 1944-08-12 | 1947-04-01 | Michelman Nathan | Method of making tapered tubes |
US3039414A (en) * | 1960-05-31 | 1962-06-19 | Rosanes Jacob | Method of producing hollow four-sided tapering beams or columns from sheet metal |
US3762448A (en) * | 1966-09-07 | 1973-10-02 | Struthers Scientific Int Corp | Thick walled pressure vessel |
Cited By (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4714287A (en) * | 1985-03-23 | 1987-12-22 | Daimler-Benz Aktiengesellschaft | Bending bar to be used as a bumper of a vehicle |
US5111578A (en) * | 1989-11-22 | 1992-05-12 | Ford New Holland, Inc. | Method of manufacturing a backhoe boom |
US5152659A (en) * | 1989-12-13 | 1992-10-06 | Kubota Corporation | Boom assembly for work machine |
US5723707A (en) * | 1993-01-04 | 1998-03-03 | Chevron Chemical Company | Dehydrogenation processes, equipment and catalyst loads therefor |
US5599158A (en) * | 1994-11-28 | 1997-02-04 | Caterpillar Inc. | Linkage arrangement for a wheel loader |
US5984618A (en) * | 1997-06-30 | 1999-11-16 | Caterpillar Inc. | Box boom loader mechanism |
US5993139A (en) * | 1997-06-30 | 1999-11-30 | Caterpillar Inc. | Box boom lift arm assembly |
US6527496B2 (en) * | 2000-05-05 | 2003-03-04 | Deere & Company | Loader boom reinforcement |
US6588084B2 (en) * | 2000-09-16 | 2003-07-08 | Daimlerchrysler Ag | Process for producing a circumferentially closed hollow profile |
US20060096099A1 (en) * | 2003-05-08 | 2006-05-11 | Noble Metal Processing, Inc. | Automotive crush tip and method of manufacturing |
US20050161979A1 (en) * | 2004-01-23 | 2005-07-28 | Chernoff Adrian B. | Vehicle body compartment lid having unitary inner panel and outer panel |
US7225542B2 (en) * | 2004-01-23 | 2007-06-05 | General Motors Corporation | Vehicle body compartment lid method of manufacturing |
EP2118553A2 (en) * | 2007-02-09 | 2009-11-18 | Industrial Origami, Inc. | Load-bearing three-dimensional structure |
EP2118553A4 (en) * | 2007-02-09 | 2014-04-16 | Ind Origami Inc | Load-bearing three-dimensional structure |
US10137812B2 (en) * | 2009-05-08 | 2018-11-27 | Thyssenkrupp Steel Europe Ag | Backrest frame for a vehicle seat |
JP2014161874A (en) * | 2013-02-25 | 2014-09-08 | Okita Seisakusho:Kk | Metal box body and method of manufacturing the same |
EP3251998A1 (en) * | 2016-06-03 | 2017-12-06 | Liebherr-Werk Ehingen GmbH | Boom profile for the boom of a telescopic crane |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US3890696A (en) | Tow truck boom and method of constructing same | |
US2516020A (en) | Method of bracing tubes internally for specific use in constructing aluminum or magnesium ladders | |
US4690361A (en) | Jack stand and method for making a jack stand | |
EP0517755B1 (en) | Air freight pallet | |
DE3344244A1 (en) | RAIL FOR HANGED CEILINGS | |
US3999354A (en) | Structural member and box beam employing same | |
DE19833250C2 (en) | Energy consumption element for rail vehicles and method for producing an energy consumption element | |
US2106602A (en) | Method of making fence posts | |
US2299143A (en) | Pipe connection | |
US3276181A (en) | Shim construction | |
US4556163A (en) | Method for manufacturing a jack stand | |
US1805283A (en) | Method of manufacturing hollow articles | |
EP0305920A2 (en) | Container, in particular a barrel | |
GB2308564A (en) | Box section girders | |
JPS59500408A (en) | Method for manufacturing conical tubular member | |
US4373245A (en) | Process for manufacturing a metal seat back structure | |
DE1755384C2 (en) | Process for the production of steering tube sleeves for bicycles or the like. | |
EP1081022A3 (en) | Method of manufacturing a vehicle body and frame assembly | |
US1797530A (en) | Subframe construction | |
DE3872211T2 (en) | SPREADER DEVICE. | |
DE19831047C2 (en) | Process for the production of tubular structural elements and structural element | |
US869724A (en) | Reinforced concrete construction. | |
US4562950A (en) | Method of forming tapered tubes | |
DE1175156B (en) | Stackable and packable stacking plate | |
GB2066341A (en) | Scaffolding brace |