US1400540A - Towing-derrick - Google Patents

Description

A. GLoovR. TowlNG D'ERR'ICK.

APPLICATION FILED JAN. 20, I9-2I.

Patented Deu. 20, 1921.

3 SHEETSSHEET l.

A. GLOOR.

owms ommen.

l APPLICATION FILED JANIZO, 1921. .Y 14,400,540, Patented Deo. 20, 1921.

` 3 SHEETS-SHEET 3- I ll lllllllll 1r 4I I will"nmnunnmnmw ALBERT GrLUOR. 0F CHCJGO, ELLEN PATENT OFFICE.

ASSEGNR T0 'SASGEN DERRICK C0., 0F

CHCAGO, ELLNES, CGBPDRTION 0F ELLNOIS.

Specification of Letters Patent.

Patented Dec. 20, 1921.

Application led January 20, 1921. Serial No. 438,731.

To all whom t may concern.'

Be it known that l, ALBERT @Loonj a citizen of the United States. and a resident of Chicago, in the county of Cock and State of Illinois7 have invented certain new and useful improvements in a Towing-Derrick, of

. which the following is a specication.

My .invention relates to improvements in derricks and has special reference to improvements in derriclrs particularly adapted for use upon trucks or automobiles for use in towing cars, or pulling cars out of ditches, etc.

A particular' object of my invention is to provide a simple derrick for the use mentioned which shall have a boom which can swing freely around a complete circle; and which boom can be lowered to be alined with the pull when the device is used to pull cars out of ditches or to pull out the car upon which the device is fined.

A special feature of my improved derricl is its adaptation to use with an automobile repair truck having side tool boxes on its platform, the boom being pivoted at a point above the tops of the boxes so that it can readily be alined even over the boxese with the line of strain.

A further feature of my invention relates to simple means for locking the swinging boom to the standard when the device is used for towing a car. Another feature relates to means for quickly clamping the swinging boom to the standard for preventing the boom swinging around under the ordinary strains of use, or to hold it in position over the car upon which it is mounted when the car is traveling from place to place.

l obtain the complete circle swing of the boom by means of the manner in which l mount the winches or cable drums on the boom itself, thus eliminating any interference with the cables in swinging the boom around and providing a very simple and easily operated device.

My invention will be more readily understood by reference to the accompanyingl drawings forming part of this specification, and in which Figure l is a side elevation of an automobile truck equipped with a derrick for hoisting and towing automobiles and embodying my invention;

2 is va similar view of the derrick;

Fig. 3 is a top plan view of the standard of the derrick;

F ig. el is a fragmentary horizontal section on the line dk4 of Fig. r2;

Fig. 5 is a vertical fragmentary section on the line 5 5 of Fig. 4;

Fig. G is a horizontal fragmentary section of the standard on the line 6-6 of Figs. 2; and

Fig. 7 is a fragmentary top plan view of the rear portion of the truck body.

F or an automobile repair truck it is necessary to provide not only a means for towing a disabled car but also means for pulling the car on to the roadway orI turning it over, if necessary, or for pulling the truck itself out of disadvantageous situations such as a ditch alongside of a road.

My invention is embodied in an automobile truck, l having a bed or floor 2, at the rear of the cab or drivers position. At the sides of the bed are arranged tool boxes 3 rising above the floor 2 and in which the necessary jacks and other tools may be conveniently carried.

@n the bed 2 between the tool boxes 3 is arranged a derrick.

l preferably arranged the derrick at the rear end of the bed, as illustrated in Fig. lg so that, as shown in dotted lines; the hoisting boom and hook can be swung out to the rear of a truclr for towing purposes.

My improved derrick comprises a rigid base lmade up of two cross pieces 5 and G and a central longitudinal piece 7, the cross` pieces are long enough so that the ends can be suitably bolted to the side members of the chassis through the bed of the body. rllhe rear cross piece 5 is arranged adjacent to the rear end of the bed 2 and the forward cross piece 6 is spaced forwardly there from suiiicient to give adequate support to the post or standard 8 of the derriolr, the forward cross piece providing anchoring connections for suitable inclined braces.

it a point on the standard above the top of the tool boxes 3 I arrange a collar 9.. rlhis collar is rotatable around the standard, it rests upon a iiXed collar l0 bolted to the standard and to which the upper ends of side braces ll are secured by removable bolts 12 and the upper ends of forward and outwardly inclined braces 13 are fixed by a removable bolt 14.

The lower ends of the cross braces are secured to the outer ends of the cross piece 5 in bracket-s 15 by removable bolts 16 and Y with four lugs 23 inside ofthe several projections 2l and all of these projections are perforated and the standard is secured to the base plate 2O by two transverse bolts 24 which pass through the several perforations at the Jforward and rear sides of the standard and are suitably removably held in place as by nuts 25.

By removing one or the other of the bolts 25 and disconnecting the several braces from the standard the standart can be swung` down on the other bolt 24 as upon a hinge to a horizontal position as indicated in dotted lines in Fig. 2.

When swung down forwardly the 4standard will lie on the bed of the truclr between the tool boxes and the truclr can then be used for other purposes, or if desired, the other bolt 25 may also be removed and the derrick entirely removed from .the truck.

Upon the collar 9 lpivotally mount the lower end of a boom 26 to swing up and down on the pivot bolt 27. As best shown in lFig. 5, the collar 9 is secured on Van vupper cylindrical extension of the fixed collar i0, which is provided at its upper end with an external flange 28 forming a circumferential groove 29 in which the collar 9 may be rotated around the standard..

This collar 9 is split at one side as shown at 30 and l provide a clamping lever 31 for closingthe collar tightly into the groove 29 upon the fixed collar 10 to prevent the free rotation of the collar and the boom. The boom is held. at any suitable inclination by means of a rotatable cap or collar 32 which is mounted on a fixed cap member secured on the top of the standard, which is tubular.

The collar 32 is held in place by a nut 34 screwed upon a central threaded stem 35 which is rigid with the standard. Upon the collar is pivotally mounted a yoke 36 comprising` side bars 87 between the Vfree ends of which are rotatably secured a pair of sheaves 38. At the outer end of boom of' channel beams arranged back to back and j spaced apart, is mounted a connecting end member 39. in the upper part of this end member a sheave pulley 40 lis rotatably mounted. 1n the lower part of this end member' is mounted a hoisting sheave 41 and between the outer ends of the channel earns and adjacent to the end connections, l provide a pair of sheaves 42 rotatably mounted on a transverse bearing member 43.

At the base of the boom 1 arranged two independent Winches, 44 and 45 having suitable gearing and drums.

The winch 44 is adapted to control a cable 46 which leadsV over one of the guide sheaves 42 and down to a hoisting device 47 suspended from the outer end of the boom. in the form shown this hoisting device rconsists of a hoolr 48 dependent from a sheave frame 49 in which a cable sheave 50 is rotatably mounted' and the cable 46 is trained around the sheave 50, then around the sheave 4l at the end of the boom, the end of the cable being secured to the sheave frame 49. 'Y

The winch 45 carries a cable 51 which is trained around the other of' the guide sheaves 42 at the end of the boom and is then led around one of the sheaves 38 at the top of the standard, then back around the guide sheave 40 at the outer end of the boom, then back to the top of the standard around the other guide sheave 88, the end of the cable beingfinally talren tothe end of the boom and secured to the connection 39.

By means of' the winch 45 and cable 5l l enabled to set the boom at any desired inclination or elevation and by means of' a suitable dog 52 which engages in the teeth of one of the gears of the winch 45 l am enabled to hold the boom as set.

By means of the winch 44 and cable 46 l am enabled to put a pulling strain upon the hook 48 as maybe desired, and by means of a suitable dog 53 which engages in the teeth of one of the gears of the winch 44 1 am enabled to retain the hook 48 at any set position. Y

The collars 9 andV 32 by which the boom is secured to the standard are both rotatable on the standard and consequently the boom can be swung around bodily with its winches to any desired position and unhindered by braces, guy ropes or any other device. The I boom and the hook, especially in pulling the truck itself or another car out of a ditch or for similar work in relation to wrecks, etc.

The clamping device 3l on the collar 9 pr vides a frictional engagement of the collar 9 on the standard to hold the boom against swinging out of a set position while the truck is run'from place to place, but when it is desired to swing the boom around to the rear as shown in dotted lines in Fig. i to lift or hold elevated the forward or rear part of a car for towing it, or even just for towing purposes, it is desired to have some more positive means for holding the boom against the side pull of the tow both from swinging and from turning corners. For this purpose l provide cooperating projections 54 and 55 on the collar 9 and on the fixed collar 10 respectively, and having vertical openings adapted to register with each other when the boom is swung around to the rear and which openings are adapted to receive a locking pin when they are in registry. This pin absolutely locks the boom against swinging around on the standard.

When it is desired to lay the standard down as shown in dotted lines in F ig. 2, the boom is first swung around to the rear and is then locked by a pin being placed in the openings in the projections 54 and 55 and then it may be swung down to the rea-r as the standard is lowered, or it ma'y be positioned up over the drivers seat, as may be desired, or if desired, the standard with the boom may be removed as an entirety from the truck.

ris vmany modifications of my invention will readily suggest themselves to one skilled in the art, l do not limit or confine my invention to the specific structures herein shown and described.

l claim:

l. In a derrick of the kind described, a fixed standard, a collar rotatable thereon between the ends thereof, a boom pivoted at one end to the collar, a cable connecting the free end of the boom to the top of the standard, a winding drum on the boom for said cable for lifting and lowering the boom, a second winding drum on the boom, a cable leading from the second drum to the free end of the boom and adapted to hang from the free end of the boom for connection to an object to be acted upon, and means for locking the collar against rotation on the standard.

2. An automobile repair wagon having side tool boxes on its platform in combination with a derriclr fixed upon the platform between the boxes, the derrick comprising a fixed vertical standard, a collar on the standard above the tops of the boxes, a boom pivoted at one end to the collar, a cable connecting the free end of the boom to the top of the standard, a winding drum on the boom for said cable, a second drum on the boom,

a cable wound on the second drum andlead ing to the free end of the boom, and means carried by the latter' cable dependent from the end of the boom for connection'to an object to be acted upon, the boom being capable of being swung through 360 degrees and means for locking the boom when at the rear of the standard.

3. ln a derrick of the kind described, non-rotatable standard, a boom, a collar on the standard to which one end of the boom is pivoted for swinging up and down, the collar being heldV against movement longitudinally of the standard and rotatable thereon, means for clamping the collar upon the standard to prevent rotation thereof, and means for positively locking the collar to the standard in one position.

et. In a derrick of the kind described, a non-rotatable standard, a boom, a split eollar on the standard to which one end of the boom is pivoted for swinging up and down, the collar being held against movement longitudinally of the standard and rotatable thereon, an eccentric lever on the collar for clamping the collar to the standard, and positive locking means for holding the boom in one position against swinging around horizontally.

5. In a towing device, a derrick fixed on a car, a fixed vertical standard, a boom, a collar rotatable on the standard between its nds to which one end of the boom is pivotally mounted to swing up and down, means carried by the boom for swinging it up and down and retaining it in its adjusted position, a lifting or pulling cable leading from the free end of the boom, hoisting gear carried by the boom for operating said cable, the boom being adapted to be positioned sub stantially in the line of strain when an object is being operated upon by said second mentioned cable.

6. ln a towing device, a derrick fixed on the rear end of an automotive vehicle and comprising a fixed vertical standard, bracing means connected to the standard above its lower end, a collar rotatable on the standard above the connection with said bracing means, a rotatable member at the top of the standard, a boom pivoted at one end to said collar to swing up and down, a winch on the boom and connected by a cable to said rotatable member at the top of the standard for swinging the boom up and down, a second winch on the boom and a cable leading therefrom to the outer end of the boom and adapted to be connected to an article to be acted upon, the boom being adapted to be rotated around the standard and to be swun up and down to aline the boom with the line of strain when the device is used for pulling a car out of a ditch, etc., and means for lock.- ing the boom against rotation when the device is used for towing purposes.

7. ln device of the kind described, a {ieri-icl; iixed on the rear end of en automotive vehicle and comprising e Xed standard7 a coller rotatable on the standard between its ends a. boom pivoted at one end to the coller, a roteteble member at the top of the standard, a boom lifting cable con nected to seid rotatable member leading to the ilree end of the boom and e winch on the boom on which seid cable is adapted to be wound, the coller end the standard having openings adapted to be alined for receiving e. locking pin to hold the boom against swinging around when the device is used igor towing e cer.

8. rllhe combination with en automotive vehicle of e derrick, means for removably mountinglthe derriclr on the bed of the vehicle, comprising pairs o upstending spaced apart, rperforated lugs secured to the bed of the vehicle, the lower end of the post or standard of the derrick having perforations registering with the perforations in the upsteinding lugs, removable bolts secured in the registering perforations for securing the post in position, a coller fixed on the post above its lower end provided with perforated lugs upstanding connection plates on the bed of the vehicle, brace members having perioreticns in their ends adapted to be registered with respective perforations of the collar and said upstending connection plates and bolts removably secured in seid registered perorations for removably securing the braces in position.

Signed December', 1920.

ALBERT GLOOR.

at Chicago, Ill., this 7th day of`

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