US1915900A - Derrick - Google Patents

Description

E. L. MOODY Jime 27', 1933.

DERRIQK Filed Nov. 12, 1931 INVENTOR. EVERETT LMooDY.

ATTORNEY.

Patented June 27, 1933 PATENT. OFFICE v EVERETT L. MOODY, OF MUNGI'E, INDIANA DERRICK Application filed-November 12, 1931. Serial No. 574,611..

, This invention relates toimprovements in hoisting apparatus of that type which consists essentially of frame members arranged in divergent order, their upper ends being joined and constituting a support for a sheave pulley over which a cable is operated. The invention has especial reference to a device of the above description which is intended for use in places where spaceis limited, and where the object tobe handled is unwieldy and is'relatively heavy and is not readily accessible. a It'is designated as a derrick and is especiallyintended for use in automobile repair work, wherein there is involved the detaching, the handling and the replacing of heavy and unwieldy parts. I

Advantages to be desired are-that the 0bect being handled maybe easily and readily lifted and held in suspense, and that it may as easily and readily; be lowered and held in place; also that the device may be collapsible thereby being capable of being easily transported from place to place, and requiring relatively small space when not in use.

To provide means for attaining the above named advanta es, is the general object of' my invention. urposes'of a more specific natureare to provlde improvements 1n construction whereby the device while belng capa'ble of manufacture at a low c ost, is

strong and durable, is relatively light in weight and is practicable foruse by a person of only ordinary's'kill.

The objects of my 1nventi0n are accomplished by and the invention is embodied in the new construction, combination and ar rangement of partsillustrated in the accompanying drawing and described in the following s'pecificat'ion. l Whereas the invention is made practicable by'the structural'features and details ofthe preferred form shown herein, it will be understood that minor changes and modifications may be made within the scope of the invention as it is defined in the appended claims, without departing from its principles or sacrificing any of its, advantages.

The several parts of the invention are identified by suitable characters of reference aprick frame, the leg members being reposed' on lating said load, mayhave convenient and practlcable access to the means for winding pliedto them in the different views in the drawing,inwhich v Figure 1 is a side view of myimproved derrick.

Figure 2 is an end view taken in the direction of'arrow 2 in Figure 1.

Figure 3 1s a top plan vlew of Figure 1. Figure 4 is a sideview, enlarged, of the Windlass, the upper portion being shown in cross section.

Figure 5 is a top plan view of Figure 4. Figure 6 is a vertical cross section view on the line 66 andas seen in the direction. of arrow 6 inFigure 4. V I

Figure 7 is a plan View of the sheet metal blank which when bent into formation, constitutes the body structure ofthe Windlass. Figure ,8 is a view of the derrick showing the position of the parts when they device is i collapsed status, the relatively small area occupied by same being indicated by the broken boundary lines. l Taking; into account the peculiar positions of the different parts of the car which are adjacent to the transmission, the limited overhead-space, and the nature of the space immedia'tely'near and at the rear of said transmission and in j which said space the user must work, my invention provides a derthe flanges of the frame of the car, clearance ofthe intermediate parts ofthe car, namely the clutch pedal and the brake pedal,is afforded, and ample' room is provided underneath the. derrick so that the user may conveniently manipulate and handle the load which is at alocationbelow the plane "of.

the frame of the.car, and while so manipuup or paying out of the cable.

. The leg. member 1 consists of two metal bars. similaiflin' width and thickness, and bound together by bolts or rivets 2. The

upper ends of said bars are spacedapart to constitute a forked cross head as shown in F-1gure;3,-.and the lower ends are bent out- 'wardly- 1n divergent order to constitute spaced feet 4 and 4. Between these feet is provided a transverse stay bar 5. The plane" of the toe 6 of each of said feet is at an obtuse angle. The said leg member is of form to provide a hip portion 7.

The leg member 8 consists of two metal bars similar in width and thickness, and bound together by rivets 9. The upper ends of said bars are spaced apart to constitute a forked cross head, of width to engage with the cross head of leg member 1, as shown in Figure 3. r

The said leg member 8 is of form to have a hip portion 10 of the height, form and location as shown in Figure 1. The plane of the toe of leg member 8 is beveled as shown in Figure 3.

The two said leg members are joined together at their cross heads the cross pin 11 which constitutes a bearing or support for a sheave pulley 12.

A frame constructed as described, is adapted to support and to retain at a position conveniently in reach of the user when in stopped position (which position is incident to the work of manipulating the load), a Windlass of the kind illustrated in the drawing.

The Windlass is secured to the leg member 1. The frame of this Windlass is made from a sheet metal blank which is of formation as illustrated in Figure 7 and it embodies the bottom portion 16, side portion 17, and side portion 18. Integral with said side portion 18, are ears 19 and 20, and toes 21 and 21. The-only machine work involved in preparing the blank, is that of punching holes 23 in the said toes, drilling holes 24 and 25 in the side portions 18 and 17 respectively, and holes 26 and 27 in the said ears 19 and '20 respectively. The ears 19 and 20 are bent at a right angle along the broken lines 28 and to positions parallel with each other.

Thetoes 21 are bent at a right engle along the broken lines 29 and to positions parallel with each other. i i

82 designates a spool, having a central bore '38. A shaft 34 which has head 35, offset portion' 36 and shoulder 37, shank 38 and threaded stud 39, is passed through hole 25 of side portion 17 of-the frame, and through bore 3 of the spool. The ofiset portion 36 of said shaft is journaled in, and its shoulder 37 has bearing at the hole 24 of the side portion 18 of the frame. A gear wheel 40 which is fastened to said shank by a key 41 is secured by a nut 42 screwed on the said stud 39. The spool is secured to the shaft 34 by a cross pin 43.

44 designates a worm, having a longitudinal bore 45. A shaft 46 which has'a crank 47 at its one end, is provided. with a shoulder 48 and a threaded stud 49 at its other end.- It is passed through the hole 27 of the car 20, and through the bore of said worm,

and through the hole 26 of the ear 19. A nut 50 screwed on said stud retains the said shaft in position. The Windlass structure is secured by rivets or bolts 51 which are passed through the holes 28 and through holes suit ably provided therefor in the leg member. Cable 52 which is wound on the spool is trained over the sheave pulley 12 and it is provided. with a suitable hook 53.

The usefulness of my invention will be apparent in reading Figure 1 of the drawing, wherein the derrick is shown in position with its feet resting on the lower flanges of the side channels (indicated by the broken lines) of the car frame. With its two 0ppositely disposed feet on one of the flanges, and with the foot of the other leg disposed on the other ofthe. flanges, the derrick rests firmly and stably in the position to which it may be disposed.

By turning the crank 47 in anti-clockwise direction, the cable is payed out. The leg members being of the peculiar conformation shown the hip portions 7 and 10 being relatively high with reference to the plane of the feet of said legs, there is afforded clearance of car parts such as foot pedals, brake and clutch. There is provided desirable space wherein the user may have practicable access to the object being handled, for hitching the cable to same, and for manipulating same at the raised or at the lowered position. i a

My improved frame lends itself to a mounting easily of the Windlass in position whereby it may be available at either side of the center of the frameand whereby it may be conveniently operated.

What I claim as my invention, is

1. A derrick frame of the kind described,

consisting of opposed leg members loosely joined together "at their proximate ends and each. being bent to provide a hip portion a predetermined distance from its end, the

hip portion of one being higher than-the hip portion of the other, the said frame being adapted to support a sheave 'pulley and a Windlass. I

2. A derrick of the kind described, consisting of opposed leg members loosely joined together at their proximate ends and each being bent to provide a hip portion, the hipportion of one being higher than the hip portion of the other, and one of said leg members having opposed foot portions' spaced from, and in a plane at a right angle to the center line of said leg member, whereby when the device is collapsed, the

foot portion of one leg member passes the foot portion of the other leg member.

EVERETT L. MOODY.

Images