US1873433A

US1873433A - Crane

Info

Publication number: US1873433A
Application number: US482733A
Authority: US
Inventors: Neil P Larsen
Original assignee: American Coach and Body Co
Current assignee: American Coach and Body Co
Priority date: 1930-09-18
Filing date: 1930-09-18
Publication date: 1932-08-23
Anticipated expiration: 1949-08-23

Description

Aug. '23, 1932.

N. P. LARSEN 1,873,433

CRANE Filed Sept. 18, 1930 Patented Aug. 23', 1932 UNITED A STATES PATENT OFFICE- NEIL I?. LARSEN, OF CLEVELAND, OHIO, ASSIGNOR '.lO THE AMERICAN COACH @a BODY COMPANY, 0F CLEVELAND, OHIO, A CORPORATION OF OHIO CRANE Application mea septemter '18, 1930.- seriai No. 482,733.

utilities companies in the erection of poles and the like.

An object of the present invention is to provide a boom adapted to be removably attached to the front end of the chassis o'f a motor vehicle so that the work of erecting poles and like devices, may be observed by the driver while sitting in a normal position within the cab of the motor vehicle.

A further object of the present invention is to provide means for directly receiving the load suspended from the boom and thus avoid subjecting the springs of the motor vehicle to the load.

With the objects above indicated and other objects hereinafter explained in view, the invention consists in the construction and combination of elements hereinafter described and claimed.

Referring to the drawing:

Figure 1 is perspective view of a motor vehicle showing the location of the boom embodying the present invention and the method of attachment.

Fig. 2 is a front elevational view of the means for receiving the load suspended from the boom.

Fig. 3 is a side elevational View of Fig. 2.

A standard type of motor vehicle 10 is illustrated in Fig. 1 and is characteristic of the type of motor vehicle used by the utilities companies in their erection and repair work. The vehicle is provided with the usual chassis 11 which has secured to the forward end thereof the boom which will be later dedescribed in more detail.

A pair of brackets 12 are spaced apart as Y shown in Figs. 1 and 2 and are bolted or otherwise secured at 13 to the forward ends hook ends 16'of the boom 17. It will be noted that these hook ends 16 are detachably connected with the opposite ends of the transverse rod 14 so that the boom maybe disengaged from the front end of the motor vehicle when not in use. The boom in the present instance consists of a pair of rods 18 which converge toward their upper ends and arepivotally connected at 19 to the upper end'of a guy 20. l

This guy 20 comprises

telescopic portion

21 and 22 which may be secured in any desired position by a locking pin 23 which is adapted to pass through suitable aligned openings in both of the telescopic portions. This guy 20 is made adjustable so as to position the' boom 17 at the desired height and to maintain the same in the adjusted position.

The lower end of the guy 20 fits within a socket 24 which has its lower ends bifurcated at 25 and provided with aligned' openings through which a rod 26 extends. Between the bifurcated ends 25 of the socket 24 and also encircling the rod 26 is a sheave 27 for a purpose to be later described.

The ends of the rod 26 are secured by welding or otherwise to the upper ends of a pair of brackets 28 which in turn are suitably bolted or otherwise secured to a portion of the motor vehicle adjacent the top thereof as clearly shown. in-Fig. 1.

At the rear portion of the motor vehicle a rod 29 is secured at its ends to the inotorvehicle and mounted for rotation upon the rod 29 is a'sheave 30.

The guy 20 has secured thereto a sheave 31 adjacent its lower end while a sheave 32 is carriedy by the upper end of the guy 20 and adapted to rotate about the axis of the pin 19. A cable 33 has a hook 34 atvone end thereof and extendsy over the sheave 32 under the sheave 31 over the sheave 30 and has t' i n chicle to excessive strain and it is, "therefore, advisable to provide a means for receiving the load and thus relieving the springs of any possibility of injury on this account. However, in providing Y such means it is essential that the motor vehicle shall still remain in operative condition so as to be moved from one pole, 'which has been erected, to the 'next pole which is to be erected, during which time the load may be suspended from the. boom. i. i rA pair of tubularmembers 35 are positioned vertically and are welded or otherwise secured to the forward portions of the brackets 12. These tubular members 35 extend forwardly beyond the forward end of the chassis 11 and slidably receive therein members 36. These members 36 are vertically adjustable, or longitudinally adjustable within the tubular members 35, and are provided with aligned openings within which are-disposed pins 37 for maintaining these members 36 in the desired adjusted positions. The lower ends of the members 36 have bifurcated ends 38 to receive therebetween rollers or wheels 39 which are rotatably mounted upon transversely extending pins 40 carried by the bifurcated ends 38.

It will therefore be seen that when in operation the members 36 are lowered until the l rollers 39 engage the ground ahead of the motor vehicle and the pins 37 inserted through the aligned openings in the members 36 and the tubular members 35 to hold these members in proper position. In view -of the fact that the tubular members 35 are directly connected within brackets 12 which support the boom 17 the load is therefore vsupported directly upon the ground and through the rollers 39, thus eliminating any unnecessary force being carried by the springs of the motor vehicle.

Themotor vehicle may be operated and may travel over a given distance during the erection of poles or the like while the rollers 39 are in engagement with the ground, thus providing a support for the boom which willinot interfere with the manipulation of the motor vehicle. Afurther advantage in the arrangement is that the operator may see the erection operations and at the same time move the motor vehicle so as to transport the pole or other article to the proper destination.

When the boom -is not in use it may be disconnected from the transverse rod 14 and the guy 20 disengaged from the socket Q4 and in collapsed condition may be carriedby the supports 40 along the side of the motor-vehicle. At the same time the members 36 may be elevated so as to raise the rollers 39 out of engagement with the ground and Aheld in elevated position by means of the l pins 37'to thus not interferein any manner 5 with the operation of -the motor vehicle.

lWhile I have 'described the'preferred effibodiments of the invention it is to be understood that I am not to be limited thereto, as changes and modilications may be resorted to without departing from the spirit of the invention as defined in the appended claims.

Having thus described my invention I claim:

1. In combination with a motor vehicle having a chassis, said chassis including a frame having a pair of side rails, a crane mounted on the forward end of said'chassis, said crane including a pair of upstanding `bracket members secured to the siderails adjacent the forward ends thereof, one of said bracket members being secured to each of said frame side rails, a transverse member secured to said bracket members, a boom including a pair of rods having their lower ends detachably secured to said transverse member adjacent the en ds thereof, said rods converging at 'their upper ends, a guy member having its upper end pivotally secured to the upper ends of said rods, the lower end of said guy member being secured to the vehicle adjacent the mid-portion thereof, and vertically adjustable ground engaging means associated with said bracket members, said means being adapted to support a portion of the weight of the crane and the load carried by it.

2. In combination with a motor vehicle having a, chassis, said chassis including a frame having a pair of side rails, a crane mounted on the forward end of said chassis, said crane including a pair of upstanding bracket members secured to the side rails adjacent the forward ends thereof, one of said bracket members being secured to each of said frame side rails, a transverse member secured to said bracket members, a pair of rods having their lower ends detachably secured to said transverse member adjacent the ends thereof, said rods converging at their upper ends, a guy member having its upper end pivotally secured to the upper ends of said rods, the lower end of said guy member being secured to the vehicle adjacent the mid-portion thereof, said guy member being variable in length, and vertically adjustable ground engaging means associated with said bracket members, said means being adapted to support a portion of the weight of the crane and the load carried by it.

3. In combination with a motor vehicle having a chassis, said chassis including a frame having a pair of side rails, a crane mounted at the forward end thereof, said crane including aA pair of bracket members Secured to the forward ends of said side rails, a transverse member secured to said bracket members. said transverse member being provided with grooves adjacent the ends thereof, and a boom constructed of a pair of rods, said rods being slotted adjacent their lower ends,

remesa said slots being adapted to receive the grooved portions of the transverse member.

4. In combination with a motor vehicle having a chassis, said chassis including a frame having a pair of side rails, a crane mounted at the forward end thereof, said crane including a pair of bracket members secured to the forward ends of said side members, a transverse member secured to said bracket members, said transverse member having a circumferential groove adjacent each end, and a boom constructed of a pair of rods, said rods being slotted adjacent their lower ends, said slots beingadapted to receive Jbe grooved portions of the transverse mem- 5. n combination with a motor vehicle having a chassis, said chassis including a frame having a pair of side rails, a crane mounted at the forward end thereof, said crane including a pair of bracket members secured to the forward ends of the side-mem bers, a. transverse member secured to said bracket members, said transverse member having a circumferential groove adjacent each end thereof, anda boom constructed of a pair of rods, said rods having slots adjacent their lower ends, said slots being adapted to receive the grooved portions of the transverse member, the open ends of said slots being t0- ward the forward end of the vehicle.

in testimony whereof, hereunto aix my* signature.-

NEIL P. LAR-SEN.