US3182833A

US3182833A - Side swing carriage for loaders and the like

Info

Publication number: US3182833A
Application number: US151004A
Authority: US
Inventors: Le Grand H Lull
Original assignee: Individual
Current assignee: Individual
Priority date: 1961-11-08
Filing date: 1961-11-08
Publication date: 1965-05-11
Anticipated expiration: 1982-05-11

Description

4 Sheets-Sheet 1 INVENTOR. GRAND H. LuL

A TTORNEY M y 1965 LE GRAND H. LULL 3,182,833

SIDE SWING CARRIAGE FOR LOADERS AND THE LIKE Filed Nov. 8, 1961 4 Sheets-Sheet 2 M M m d m 2 L 1 w m J W G G D m a E M a Q 40 6 Y 2 NZ mg i wmm 6 6 5 l4 .M 4 A 6 M 8 m E m v\\ a m 6 5 m 2 3 a 4 G L 3 U? E a w M M96. m 7 N 6 u m mm mm M A TT'ORNEY May 11, 1965 LE GRAND H. LULL SIDE SWING CARRIAGE FOR LOADERS AND THE LIKE Filed Nov. 8, 1961 4 Sheets-Sheet 5 INVENTOR. L GRAND H. Luu.

A TTORNEY y 1965 LE GRAND H. LULL 7 3,182,833

SIDE SWING CARRIAGE FOR LOADERS AND THE LIKE FIG. 7

INVENTOR.

A -r TORNEY LEGRAND H. Luu;

United States Patent C) ice I 3,182,833 SIDE SWING CARRIAGE FOR LOADERS AND THE LIKE Le Grand H. Lull, 5501 Woodlawn Blvd, Minneapolis, Minn. Filed Nov. 8, 1961, Ser. No. 151,004 8 Claims. (Cl. 214147) g This invention relates to a new and improved machine for loading, unloading, transporting and placing articles; in particular, it concerns a mobile load carrying machine having a pivotal side swing carriage adapted to handle and transport heavy elongated loads such as logs, poles, piping, tree-length logs and the like with a minimum of effort and with greater efiiciency than heretofore possible.

A problem encountered in loading, lifting and carrying long logs, poles and the like is the severe limitation placed upon conventional equipment with regard to maneuverability and operational ease when such articles are carried with their long aXis transverse to the direction of travel. For example, a 95 foot utility pole, when carried by a conventional fork truck, requires at least as much clearance as its length indicates to pass from one location to another. For this reason, such articles are generally handled by power cranes and derricks at a cost greatly in excess of the normal amount necessary to handle loads of similar weight but with substantially less length.

.Furthermore, when a conventional fork truck or loader is used for this purpose, it must approach the load at a direction perpendicular to the aXis of the load and then back away and turn in the desired direction with due regard to the extension of the load on each side of the machine. This characteristic is undesirable from an operational as well as a cost standpoint as additional labor and fuel are required to do the job, to saynothing of the extra space required. Generally, working areas for such articles lack the space necessary to transport them in a cross-wise manner.

Another shortcoming found in machines generally designed to handle logs, poles, structural steel and other elongated articles is the inability of their load engaging devices to accommodate themselves to payloads of varying diameters and cross-sectional shapes without extensive on-the-spot changing of the components of the machine. Also to be considered is the advantage of providing a single machine with removable and changeable load engaging members to increase its versatility and flexibility.

Accordingly, it is an important object of this invention to provide a machine that will overcome the above disadvantages and limitations.

Another primary object of this invention is to provide an improved machine for handling articles or bulk loads.

Another object of this invention is to provide a side swing carriage for loaders and the like.

Yet another object of this invention is to provide novel and improved means for facilitating the handling of large, unwieldy payloads characterized by great Weight and length.

Still another object of this invention is to provide in a side swing carriage for loaders and the like novel and 3,182,833 Patented May 11, 1965 improved means for accommodating the load engaging members of the carriage to loads of different size ant character.

A further object of this invention is to provide a nove set of removable interchangeable lift arms or forks to a load engaging carriage.

Another object of this invention is to provide in side swing carriage for loaders and the like novel ant improved means for transmitting forces to the load en gaging members.

- Another object is to provide in a side swing carriag novel and improved means for transferring forces from an inner fixed frame to an outer movable frame.

Another object of this invention is to provide a sid swing carriage for loaders and the like characterized b1 novel structural and functional features adapted to facili tate the easy handling of loads from the side of the ma chine to which the carriage is applied.

Yet another object of this invention is to provide 1 mobile load handling machine adapted to carry elon gated payloads down an aisle or in a roadway of a widtl not greatly in excess of the width of the machine itself A further object of this invention is to provide a nev and improved side swing carriage for a load handlin; machine capable of lifting, carrying and handling logs poles, culverts and other articles of similar length am weight.

. A still further object of this invention is to provid in a side swing carriage of the type described nove holddown clamps capable of engaging and holding ar ticles of varying size, shape and weight.

A further object of this invention is to provide a nove and improved hydraulically actuated carriage for load ers and the like adapted to carry poles, logs and lik articles in more than one plane and almost parallel t1 the longitudinal axis of the machine to which said car riage is attached.

A further object of this invention is to provide a move and improved hydraulically actuated carriage for loader and the like adapted to tilt logs and similar articles back ward in a vertical plane almost 90 and forward in 1 vertical plane almost 45.

Another object of this invention is to provide a sid swing carriage structure for loaders and the like tha can be manufactured from readily available material with a minimum of cost.

Another object of this invention is to provide a sid swing carriage for loaders and the like having a compac and attractive appearance.

r A further object of this invention is to provide a sid swing carriage mechanism that is adaptable for manu facture of a simple model or toy simulating a mobil loader and using a minimum of parts.

A further object of this invention is to provide a sid swing carriage for loaders and the like that can be mount ed for either right or left hand operation.

These and other objects and advantages of the inven tion will become more fully apparent from a considera [n the drawings: FIGURE 1 is a side elevation view of a mobile loader )wing my side swing carriage in two positions, the sed position being indicated in dotted lines; FIGURE 2 is a fragmentary top plan view of the for rd end of a mobile loader with my side swing carriage )Wll in two positions, the solid lines indicating the carge in a pivoted position, the dotted lines indicating the -riage in a straight non-pivoted position; FIGURE 3 is a front elevational view of my side ing carriage; FIGURE 4- is a perspective view of a mobile loader lipped with my side swing carriage showing the loader a transport position; FIGURE 5 is an enlarged fragmentary elevational View, rtially in section, taken on the line 5-5 of FIGURE 3; FIGURE 6 is an enlarged fragmentary elevational view, rtially in section, taken on the line 6-6 of FIGURE 3; FIGURE 7 is a perspective View of my side swing cara FIGURE 8 is an enlarged fragmentary elevational view, .en on the line 83 of FIGURE 11;

FIGURE 9 is an enlarged fragmentary elevational view, ftially in section, taken on the line 99 of FIGURE 3; FIGURE 10 is an enlarged fragmentary view, partially section, taken on the line 1010 of FIGURE 11; FIGURE 11 is an enlarged fragmentary side view, with tions broken away, of the load engaging and support- I members forming part of my invention;

FIGURE 12 is an enlarged fragmentary top plan view 30 en along the line 1212 of FIGURE 9; and

FIGURE 13 is an enlarged fragmentary view, par- ,ly in section and with parts broken away, taken on the a 1313 of FIGURE 7, showing the details of the sion bar connection forming part of my invention. Referring now to the drawings, the invention, desiged in its entirety by the reference character A, is shown unted upon the forward end of a boom B that is kably mounted adjacent one end thereof on mobile der C and extending longitudinally therefrom. Boom which swings about a rear pivot axis in a vertical plane, :quipped with suitable hydraulic means 10 for raising l lowering and is further provided with a forwardly ending hydraulic jack 12 that is centrally carried be- :en the

boom members

14, 16. For maximum operaial efficiency, boom B is preferably of the telescoping reaching type, although a longitudinallyfixed boom y be used. Conventional means are provided for suping fluid under pressure to the hydraulic elements herefter referred to.

Is shown in FIGURES 3 and 7, my side swing carriage ncludes a laterally fixed inner frame 20 made up of a r of horizontal spaced parallel tubular upper and lower lctural members 22 connected by a pair of

vertical ular members

23 and 24. At one end of frame 20 e right hand side of the machine looking forward from cab) a hollow vertical pivot member 26 is connected members'22 to form therewith and with members 23 l 24 a laterally immobile centrally open inner supportstructure of great strength and rigidity.

nner frame 20 is connected to the free end of boom y means of. the pivotal elements shown in detail in EURE 5. 'As illustrated, the rear surfaces of lower izontal member 22 and

vertical members

23, 24 are ripped with pivot brackets 28 suitably trunnioned upon lower free end 30 of boom B to provide for rocking vement of frame 20 about a pivot axis 31 disposed isversely of and adjacent the free end 30 of boom B. draulic jack 12, located centrally and longitudinally boom B, is connected at its rearward end to suitable porting structure (not shown) within boom B and at forward end to a pintle 32 carried by spaced parallel tical braces 34 mounted centrally between members 24 and connected to members 22. This arrangement mits the selective rocking of inner frame 20 of swing 4 carriage A about a transverse pivot axis 31 adjacent the free end 34 of boom B.

FIGURES 3, 6 and 7 show the details of the supporting structure provided for mounting the inner end of hydraulic jack to inner frame 20, the outer end of which is secured, as will be explained, to outer frame 42 to impart swinging movements thereto. A solid upwardly extending plate 52 is welded, or otherwise suitably secured, to the rear of upper member 22 and post 24. Suitable

diagonal bracing members

54, 55 are so arranged as not to interfere with the structural elements of outer frame 42 (shown in dotted lines in FIGURE 6) when outer frame 42 is swung into a closed and nested position with respect to inner frame 20. Stiffener 56 at the rear of plate 52 provides extra strength and rigidity. A pair of horizontal parallel vertically spaced forwardly extending brackets 58 are carried by the upper end of plate 52 ad jacent upper brace 55, into which is mounted a vertical fixed pin 60, to which is secured one end of hydraulic jack 50. As shown in FIGURE 6, the axis of pin 60 coincides generally with the vertical axis of frame member 24 of inner frame 20. a 1

Turning now to a description of outer swingable frame 42, this structure includes a pair of horizontally spaced tubular

vertical end posts

62, 64, which are connected by a pair of tubular upper and lower

horizontal members

66 and 68, respectively. The inner spatial limit of the centrally open rectangular form resulting from the arrangement of

posts

62, 64 and

members

66, 68 is of such a length and width as to surround in closely spaced relation the corresponding outer spatial limit of inner frame 29 so that outer frame 42 may assume a nested lateral position with respect to inner frame 20, as shown in FIG- URES 1, 3 and 7.

, FIGURES 3, 7 and 9 illustrate the pivotal connection joining inner frame 20 and outer frame 42, Carri-edwithin pivot member 26 of inner frame 20 area pair of hollow bearing plugs 38 located adjacent each end thereof. Rotatably mounted within pivot member 26 and supported by plugs 38 is a solid cylindrical pivot shaft 40 which extend-s beyond each end of pivot member 26. Adjacent the inner end of

horizontal members

66, 68 of outer frame 42 are a pair of hollow vertical sleeves 70, 72, mounted in

members

66 and 68, respectively. Sleeves 70 and 72 are in alignment with each other and with the axis of pivot member 26 and shaft 40 so as to receive shaft 40 therein. FIGURE 9 illustrates sleeve. '70; sleeve '72 (not shown) is identical therewith but is located in member 68. Adjacent the lower end of sleeve 7 0 and hollow circular boss 74 is welded. A bearing surface between pivot member 26 of inner frame 20 and member 66 of outer frame 42 is provided by a hollow circular bronze bushing 75 mounted on shaft 40 therebetween. A collar 76 on each end of shaft 40, suitably attached thereto by means of diametral bolt 78, prevents the axial displacement ofshaft 40 and holds the pivotal assembly in place. A hollow circular spacer 79 on shaft '40 between the lower end of pivot member '25 and member 68 takes up the slack in the assembly. Thus outer frame 42 pivots with respect to inner frame 20 about a pivot axis 81 (see FIGURES 2, 3 and 7) defined by the axis of shaft 40 and pivot member 26.

Located intermediate the aforementioned pivot axis and the free end of member 66 is a forwardly extending horizontal support 89 upon which is mounted, in forwardly and upwardly spaced relation to member 56, a vertical pin '82 adapted to receive the outer end of hydraulic jack 50.

End posts 62' and 64 eachcarry adjacent their upper ends two pairs of fixed spaced forwardly extending

ears

84, 86 having suitable apertures therein to receive bearing pins 88, 9t), 92 and 94. Upper ears 84 are adapted to receive

pins

88 and 90 with the axes thereof in vertical register, while lower ears 86 receive pins 92 and 94, which also have their axes in a common horizontal plane spaced vertically below and parallel to the'axes of

pins

88 and 90. Rotatably secured to

pins

88 and 90, respectively, are

glasses a pair of horizontally spaced upper crank

members

96 and 98. Similarly, a pair of lower crank

members

100 and 102 are pivotally secured to lower pins 92 and 94. As shown in FIGURE 1, the axes of pins 88 and 92 are in horizontal register. Crank

members

96, 98, 100 and 102 are practically identical in construction, each including a pair of spaced parallel elongated side panels 104, 106 suitably reinforced intermediate their ends by a central stiffener consisting of plates 108 that are welded at each end thereof to transverse solid cylindrical members 110, as shown in FIGURES 3 and 7.

Carried at the outer end of each of the

crank members

96, 98, 100 and 102 are a pair of spaced load bearing

vertical link members

112 and 114.

Link members

112 and 114 are identical to each other, each being characterized by a pair of generally elongated side plates 116 having a generally horizontal lower edge 118 and gradually tapering sides 120 that terminate in a narrow top surface 122. Suitable central reinforcing 123 is provided between the side plates 116. Adjacent the top 122 of

link members

112 and 114 bearing pins 124, 126 are carried, upon which are mounted the forward ends of upper crank

members

96 and 98, respectively. Bearing pins 128 and 130 are similarly mounted between the side plates 116 of

link members

112 and 114 in spaced relation below pins 124 and 126 to receive lower crank

members

100 and 102, respectively. This construction results in a four bar linkage consisting of upper crank

members

96, 98, lower crank

members

100, 102, link

members

112, 114 and the fixed supports resulting from the attachment of the crank members to

posts

62 and 64 of outer frame 42.

The lower ends of

link members

112 and 114 are provided with hold-down clamps 130 and 132, respectively. Each hold-

down clamp

130, 132 is characterized by an elongated load engaging member 134 and a central upstanding rib 136 extending upwardly therefrom into engagement with

link members

112, 114. The contour of the undersurface of member 134 (FIGURES 7 and 11) is sharply concave downwardly, as at 138, near the forward end thereof and slightly concave upwardly, as at 140, adjacent the rear tip thereof; Between these points member 134 is substantially flat. Mounting of clamp 130 within link member 112 is accomplished by positioning rib 136 between the sideplates 116 of link member112. Suitable filler plates 117 accommodate the connection. As shown in FIGURE 10, a pair of longitudinally spaced

vertical slots

140, 142 are located in rib 136 of

clamps

130, 132 into which extend bearing pins 144, which are carried by the lower ends of

link members

112 and 114, to allow vertical displacement of

clamps

130, 132 thereabout. The dotted line position of clamp 130 in FIGURE 11 is illustrative of this characteristic of the invention.

Further provided upon outer frame 42 are a pair of laterally spaced lift arms or

forks

146 and 148 extending forwardly from posts 62 and '64, respectively. Lift

arms

146 and 148, each removably attached to outer frame 42, are characterized by a rear vertical leg 150 and a forwardly extending generally horizontal leg 152 which is positioned in register with the lower surface of

posts

62 and 64. Connection between the rear vertical legs 150 of

lift arms

146, 148 and

posts

62, 64 is made by a pair of spaced upper side plates 154 attached to each leg 150. Brackets 154 have opposed downwardly open notches 156 engageable with cylindrical bosses 158 that are welded into diametrically opposite sides of

posts

62 and 64 to form horizontal laterally extending supports for side plates 154. As shown in FIGURES 7 and 8, the lower rear ends of

lift arms

146 and 148 are removably attached to frame 42by a pair of parallel spaced depending brackets 160 secured to the lower end of the undersurface of lower horizontal member 68 beneath

posts

62 and 64. Brackets 160 receive rearwardly extending lugs 162 secured to the lower rear surface of legs 150 of

lift arms

146 and 148. Lugs 162 and brackets 160 are provided with a common aperture releasably hold the assembly together.

Means for actuating hold-down clamps and 131 consists of a pair of hydraulic jacks and 172 attache at one end thereof to bearing

pins

88 and 90, respectively and at the opposite end thereof to pins 128 and 130, re spectively. It can be seen that a considerable mechanica advantage can be obtained by virtue of the jacks 170, 171 and their positioning with respect to the

linkage member

100, 102 and pins 88 and 90. That is to say, the diagon ally forward positioning of jacks 170, 17-2 within each 0 the laterally opposed crank

members

100, 102, in combina tion with the hydraulic power obtained in the jacks them selves, results in a multiplication of force adequate ti rigidly clamp logs, culverts, structural products, piping ant the like, between hold-down clamps 130, 132 and

lift arm

146 and 148.

To take up any lateral or diagonal twisting moment: that may occur during periods of peak load usage, I havl provided a lateral torsion bar 176 that extends betweei lower crank members 102 in the manner shown in FIG URES 3, 7 and 13. This feature consists of a pair 0 slotted cylindrical brackets 178 that are positioned on lht inner side plates 104 of lower crank members 102 in hori zontal alignment with each other. A slender elongate torsion rod 180 having an open eye 182 formed in eacl end is secured within brackets 178 by suitable bolted 0: pin connections 184. Torsion bar 176 keeps the hol down clamps 130, 132 in reasonable alignment during no-load conditions; when the carriage is loaded, torsioi bar 176 restricts the separation of

clamps

130, 132 withir the limits defined by the length of the eyes 182 at each en( thereof. Further provided for stiffening outer frame 41 is a diagonal sway brace 186;

Operation and use 0 the device The features above described offer unique advantage: for the loading and transporting of articles, particularly items such as utility poles, structural beams and columns culverts, piping and tubing, logs, lumber, and other elon gated members which arerelatively difficult to handlt because of their length and weight.

For example, when loading a utility pole, the operato: may approach a pile of poles in a straight forward posi tion, as indicated by the dotted lines of FIGURE 2, thei back away and rotate carriage A about pivot axis 81 St that the log D may be carried roughly parallel to the lint of travel of the machine (indicated by the solid lines 0 FIGURE 2). By positioning the log D between the oute; end of the outside clamping members (indicated by refer ence character 190 in FIGURE 2) and the inner end of tht inside clamping members (as at 192 in FIGURE 2), a maximum degree of parallelism of the log D with th( longitudinal axis of the machine can be obtained. Th centrally open construction of inner frame 20 and oute frame 42 also provides for maximum visibility for th operator at all times regardless of the position of the boon and its load. As shown in FIGURE 4, by swinging car riage A to a side position, poles and other elongated load can be transported along roadways and narrow aisles of width not greatly in excess of the width of the machine Loads can also be placed upon carriage A when it is swun; into a side position, the exact technique used dependin; upon the circumstances encountered in an individual case It has been found that long poles, trees, piping, and th like are easier to carry if the load is placed within oute frame 42 so that its center of gravity is well forward 0 the machine to offset any unbalance caused by the Weigh of the load as it is swung to one side.

' The strength built into the outer frame 42, by virtue o the unique arrangement of the upper and

lower cranl members

96, 98, 100, 102 and the

link members

112, 114 with its connection to the hold-down clamps 130, 131 enables the structure to securely hold exceptionally lon and unwieldy poles and other articles of similar lengtl and weight for safe transport, placing and angling. Bj providing suitable lifting characteristics for the boom 1 a versatility hitherto unknown can be achieved. Mobil.

tchines of the type disclosed herein have satisfactorily ed, transported and set down utility poles 95' in lengt :h ease and facility. By elevating boom B and swingcarriage A to its extreme side and forward position, g of such length can be positioned almost perpendicuto the ground by swinging it backward in a vertical vne almost 90; when carriage A is swung forward durthe time boom B is raised to its upper limit a log of :h length can be swung forward in a vertical plane cost For such loads and conditions, however, it advisable to use my carriage A on mobile machines of proper design and construction bearing in mind the tribution of the several forces encountered with such a .d. The features described in connection with the holdwn clamps 130, 132 and the manner in which they are ried by

link members

112, 114 allow for the accomvdation of varying diameter logs, poles, etc. between arms or

forks

146, 148 and clamps 130, 132. The 'oting of

clamps

130, 132 in a plane perpendicular to load members permits the facile and safe clamping gagement of the hydraulically operated clamping struce about logs, poles, structural shapes, piping and the e. In the case of metal piping, tubing, structural steel l other loads characterized by smooth non-resilient in- ;ible surfaces, the inner clamping .surfaces of hold-down

mps

130, 132 and/or lift arms 146, 143 may be lipped with suitable resilient material adapted to yield- ;ly engage and firmly hold the payload. Conventional ans, such as bonding or rivetting, may be used to secure :h material to the inner clamping surfaces of the holdwn clamps and the lift arms to provide additional safety 1 workability to the carriage. When a particularly long and heavy load is contemted for carrying, lift arms or works 146, 148 must be suflicient strength to withstand not only the payload t also the forces imposed by the operation of the hytulic jacks upon the

clampingmembers

130, 132. For iling lighter loads it may be feasible to use lift arms forks of lighter weight and cross section; therefore, I we shown novel and improved means for removably muting lift arms 14%, 148 upon the outerframe 42 to rease the versatility of the device, without substantially acting its overall cost. .Vly invention has been sufficiently tested and found to entirely satisfactory. It will be obvious to those skilled the art that my invention may be modified by many :stitutions and equivalents and that this disclosure is ended to be illustrative only. In the claims when the ms horizontal or vertical are referred to, the orien ton described is to be taken as meaning a vertical or :izontal orientation when the machine is in a normal el position with the forwardly extending legs of the arms or forks of the carriage in a horizontal position. :h language is not intended to limit or narrow the pe of the claims in any sense. Furthermore, it may possible to use my novel swing carriage on scale model s'and other unconventional environments Where its tures may be found useful. It is within the purview this invention to encompass such uses and I intend to limited solely by the scope of the appended claims. l'clai-m: In a load carrying machine, a mobile body, a vert-lly swinga'ble boom troclcably mounted adjacent one l thereof on said mobile body and extending therem, a laterally fixed frame mounted for vertical rocking vem-ent on said boom about a horizontal pivot axis )osed transversely of and adjacent the free end of said am, actuating means conneotedto said frame and no ble toeffect relative vertical pivotal movement of said he with respect'to said boom, a laterally swingable d-engaging frame carriedby said fixed frame and unted for horizontal rocking movement on said fixed he about a vertical pivot axis adjacent an outer end iaijd-fixed frame, said vertical pivot axis being perpen:

dicular to said first mentioned transverse pivot axis, actuating means connected to said :swingable frame and to said fixed frame and operable to effect relative lateral swinging movements of said swingablc :frame with respect to said fixed frame, a pair of laterally spaced forwardly extending lift arms carried by said swingable frame at the lower ends thereof, a pair of laterally spaced upper crank members each mounted for vertical rocking movement on said swingable frame about a horizontal pivot axis adjacent the top of said swingable frame, a pair of laterally spaced lower crank members mounted for vertical rocking movement on said :swingable frame about a horizontal pivot axis below said last mentioned pivot axis, a pair of laterally spaced vertical link members each pivotally conmeeting an upper and a lower crank member and extending therebe-low, a hold-down clamp carried by the free end of each of said link members over said lift arms, and actuating means connected to said swingable frame and operable to effect releasable clamping engagement of articles carried between said hold-down clamps and said lift arms.

2. The structure defined in claim 1 wherein said last mentioned actuating means consists of a pair of hydraulic jacks each connected at one end thereof to said swingable frame adjacent the top thereof and connected at the other end thereof to said lower crank members adjacent said link members.

3. The structure defined in claim 1 wherein said holddown clamps are toggle mounted to said link members to effect limited vertical pivotal movement of said hold-down clamps about closely spaced horizontal axes perpendicular to and intermediate the length of said hold-down clamps.

4. The structure defined in claim 1 wherein said lift arms are removab'ly attached to said movable frame.

5. The structure of claim 1 wherein a torsion member connects said lower crank members.

6. In a carriage for loaders of the type having a for- Wardly extending boom, a load engaging frame carried by the front end of said boom, at least two laterally spaced forwardly extending lift arms mounted on said frame, upper and lower crank members pivotally carried by said frame above each of said lift arms, vertical link members pivotally connected to each of said upper and lower crank members and extending therebelow, a hold down clamp carried by the lower end of said link members above said lift arms, and hydraulic means connected to said frame and to said lower crank members operable to effect clamping engagement of articles carried between said hold down clamps and said lift arms.

7. In a loader, including a front end load-engaging structure having later-ally spaced generally vertical lift arm support members, a generally horizontal support member connecting the lower end of said vertical support members, the combination with said support members of laterally extending generally horizontal support bosses on each side of said vertical support members in spaced relation above said horizontal support member, bracket means extending below said horizontal support member in register with said vertical support members, a forwardly extending lift arm removably attachable to each of said vertical support members and to said bracket means, said lift arm including a rear vertical leg, lug means adjacent the lower end of said rear vertical leg removably engagea'ble with said bracket means, and a pair of side plates secured to the top of said rear vertical leg, said side plates bearing against opposite sides of said vertical support members and having opposed notched out portions adapted to rest upon said support bosses.

8. In a loader for handling logs, poles, piping and similar heavy elongated loads, including a mobile frame, a forwardly extending boom carried by said frame, laterally fixed support structure carried at the front end of said boom, the combination comprising:

. ,a hollow vertical pivot members forming one side of said support member, r 1 I a pivot shafit carried within and extending above and References Cited by the Examiner balm Said P member, UNITED STATES PATENTS a load engaging frame pivotally mounted on the upper 12 557 395 6/51 sdhnfidgau 214 6 and lower extensions of said pivot shaft for side 2596747 5/52 Ward et a1 I swinging movements with respect to said frame, 5 2:8O6619 9/57 Schroeder E hydraulic cylinder means for swinging said load en- 2,823:Q39 5 Puim gaging frame [from a fonward position to a side p-osi: 2396306 7 5 Vossenberg tiqn, 3,024,933 3/62 Albert et a1 214 7( a pan of forwardly extending lift arms, and 10 FOREIGN PATENTS a pair of hold down clamps pivotally mounted on said load engaging vframe above said lift arms for clamp- 1929290 4/38 Gallmany' ing movement generally parallel to said lift arms. HUGO 0'. SCHULZ, Primary Examiner.

Claims

8. IN A LOADING FOR HANDLING LOGS, POLES, PIPING AND SIMILAR HEAVY ELONGATED LOADS, INCLUDING A MOBILE FRAME, A FORWARDLY EXTENDING BOOM CARRIED BY SAID FRAME, LATERALLY FIXED SUPPORT STRUCTURE CARRIED AT THE FRONT END OF SAID BOOM, THE COMBINATION COMPRISING: A HOLLOW VERTICAL PIVOT MEMBERS FORMING ONE SIDE OF SAID SUPPORT MEMBER, A PIVOT SHAFT CARRIED WITHIN SAID EXTENDING ABOVE AND BELOW SAID PIVOT MEMBER, A LOAD ENGAGING FROM PIVOTALLY MOUNTED ON THE UPPER AND LOWER EXTENSIONS OF SAID PIVOT SHAFT FOR SIDE SWINGING MOVEMENTS WITH RESPECT TO SAID FRAME, HYDRAULIC CYLINDER MEANS FOR SWINGING SAID LOAD ENGAGING FRAME FROM A FORWARD POSITION TO A SIDE POSITION, A PAIR OF FORWARDLY EXTENDING LIFT ARMS, AND A PAIR OF HOLD DOWN CLAMPS PIVOTALLY MOUNTED ON SAID LOAD ENGAGING FRAME ABOVE SAID LIFT ARMS FOR CLAMPING MOVEMENT GENERALLY PARALLEL TO SAID LIFT ARMS.