US1193074A - sasgen - Google Patents

Description

M. J. SASGEN.

ATTACHMENT FOR DERRICKS OF THE WHEELBARROW TYPE.

I APPLICATION FILED APR. I4. I913- ww'm.

Patented Aug. 1, 1916.

4 SHEETS-SHEET 1 I I N 7. .v

' MJLSASGEN. ATTACHMENT FOR DERRICKS OF THE WHEELBARROW TYPE.

APPLICATION FILED APR. 14. I9T3- 1L ,1 93mm. Patented Aug. 1,1916.

4 SHEETSSHEET z.

M. J. SASGEN.

ATTACHMENT FOR DERRICKS OF THE WHEELBARROW TYPE.

APPLICATION FILED APR-I4. I913- Lwfi,?4h PtentedAug. 1,1916.

4 SHEETS-SHEET 3.

M. J. SASGEN.

ATTACHMENT FOR DERRICKS OF THE WHEELBARROW TYPE.

APPLICATION FILED APR. 14. I9l3.

1 1 93,0?4. Patented Aug. 1, 1916.

4 SHEETSSHEET 4.

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MICHAEL J. SASGEN, OF CHICAGO, ILLINOIS; ASSIG-IQ'OB TO SASGEH DERRICK COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

ATTACHMENT F013 DERRICKS OF THE WHEELBABROW TYPE.

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Specification of Letters Patent.

Patented Aug. 1, 1916..

Application filed April 14, 1913. Serial No. 7 1,007.

To all whom it may concern Be it known that I, MICHAEL J.

Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Attachments for Der-. ricks of the Wheelbarrow Type, of which the following is a specificatio The present inventlon relates more part1cularly to that type of derricks commonly known as builders derricks, and to that class of builders derricks which has the;

a wheelbarrowderrick and is more particuboom so supported upon the mast as to permit the boom to be swung completely about ploying companion booms extending indivergent relation from the mast so that a load can be raised by means ofo'ne of the booms and a second load lowered simultaneously with the raising of the first mentioned load through the instrumentalities of the second boom. Derricks of this character are usually termed a wheelbarrow derrick, although this as well as any of the other above mentioned terms should not be construed as any limitation upon the scope of the invention.

One of the objects of the invention isto provide a pivotal mounting for the booms upon the mast, thus enabling the booms to be swung completely about the mast.'

Further objects are to provide an attachment giving a pivotal connection between the upper end of the mast and boom; to arrange such connection to have it receive and retain the adjoining inner ends of the boom arms; and to further arrange said connection so as to enable it to furnish a mounting for sheave members.

In the drawings: Figure 1 is a perspective of the derrick of the present invention in operative position; Fig. 2 a side elevation of said derrick; Fig. 3 a cross section of the drum together with its operating and con- .trolling members and the mechanism for reof the mast; Fig. 8 a sectional detail of the I upper portion of the mast and the inner Snsonn, a citizen of the United States, residing at;

portion of the booms; and Fig. 9 a perspectwo of the member for locking the driving gears for the drum in position.

This invention as previously stated relates to a derrick used principally in the construction of buildings and is of that type which is intended and adapted to be moved from floor to floor as the building operation progresses. The particular type of derrick to which the present invention is more particularly directed is of that style usually termed larly adapted for hoisting brick, mortar, etc, from the ground to the floor of the building. As is well known to those versed in the art to which the present invention relates by using a double boomed derrick for work of this nature a loaded wheelbarrow or other receptacle can be raised simultaneously with the lowering of an empty barrow or receptacle.

The present invention therefore deals more particularly with a derrick of the above properties and the primary object is to so arrange the various working parts comprising the derrick as to make the same simple and strong of construction and adapted to be easily and readily operated by a single workman, all of the controlling and operating parts of the derrick being collected and grouped together so as to be within easy reach of the operator.

Referring now to the drawmgs, and particularly to Fig. 1 the derrick as there illustrated comprises a base member 10 of suitable construction. The form illustrated comprises companion beams arranged in the form of a cross. Any suitable means may be employed for lockingthis base to the floors or rafters or other portions of the structure with which the derrick is being used. Arising'from the base 10 is a mast 11 which may be of any suitable size, form and material, and which in the construction shown is made of tubular metal. Braces 12 are utilized for connecting and bracing the mast with respect to the base, and the connections 13 between these braces and the'mast are of a removable nature, enabling the mast to be disconnected from the base, if it be so desired.

Companion divergently arranged booms 14 and 15 are provided, each consisting of a top section 16, a rear section 17 and a diagonally disposed connecting section 18 extending from the outer endof the top section to the lower -end ofthe rear section.

In the case 'of derricks of the type illustrated in the drawings; that is, wheelbarrow derricks, therewill be two of these booms employed as shown,"each-of which is similar Y inconstruction and m'aybe of any suitable size, shape or material.

In the construction shown, a casting or member 19is provided which is mounted upon the upper end of the mast 11 and as will be readily understood by referring to Fig.8, is adapted to revolve about the upper end of the mast. In the construction shown a set screw 21 is provided which is intended to prevent lateral displacement between the casting 19 and the upper end of the mast. Mounted in the casting 19, as will be seen by referring to Fig. 7 are companion sheaves or pulleys 22, one for the boom 14 and one for the boom 15. The casting 19 is so formed that the sheaves carried thereby will be positioned parallel to the arms of the boom with which they are associated.

The lower ends of the sections 17 and 18 of the booms are attached to a lug 23 secured to, or formed integral with, a sleeve 24 which is mounted torevolve about the mast 11 as will be clearly understood from Figs. 2 and 3. The sections 18 are detachably connected to the lugs 23, and a detachable connection is preferably provided as at 25 between the members 17 casting 19 and members 16 of the booms. Thus by loosening the connec tions 25 and the connections 26 between the sleeve 24 and the members 17 and 18, the

members 16 and 18 can be detached, which is a further advancement toward rendering the derrick of a knockdown construction.

A cable 27 is provided which in the construction shown, is in the form of a chain,

although in theclaims and elsewhere where the word cable is used it is intended that the word be given its usual broad significance embracing ropes of hemp or steel, etc. This cable passes over the pulleys 22 and one end of said cable depends'from a pulley 28 attaehedto the outer end of the boom 15 and the other end of the cable depends from a pulley 29 attached'to the outer end of the boom 14. The cable encircles a drum 30 and if the cable be in the form of a chain, as in the'construction shown, the drum may be provided with recesses 31 so as to enable the chain to effectively contact the surface of the drum, thus insuring that the cable will to cover all structures which may be used for receiving and paying out a cable whether the cable be in the form of a chain or other style.

The drum is mounted upon a shaft or spindle 32, best shown perhaps in Fig. 3 andthis shaft 32 is mounted in a bracket plate-like casting 33, secured to the ring 24 by bolts 34 or other suitable locking members. In the construction shown the drum 30 has cast integrally therewith a ratchet surface 35 and has also cast therewith a gear 36. Suitable rings or washers 37 are provided for holding the drum, gear and ratchet against lateral movement with respect to the shaft 32.

The plate like casting 33 is provided in the construction shown with a lug or enlargement 38 to which is attached a dog 39 arranged to coact with the teeth of the ratchet 35 and control the drum against backward rotation while the load is being hoisted. The dog 39 is pivotally attached to the lug 38 and is provided with a double acting face as will be understood from Fig. 1, so that the dog can be swung from one side to another whereby it may be positioned in proper position to operate no matter in which direction the drum is rotating; that is to say when the direction of rotation of the drum is reversed the dog can be thrown to the opposite position where it will then be effective.

The gear 36 may be termed the driven gear of the drum and I provide in the construction illustrated two gears 40 and 41 either of which may act as a driving gear for the gear 36. The gears 40 and 41 are arranged upon a shaft 42 which is mounted to have a sliding and a rotary movement within lugs 43 which lugs are a portion of the bracket plate 33 as will be clearly understood from Figs. 2, 3 and 6. The gears 40 and 41 are spaced apart upon the shaft 42 so that only one of said gears can be in mesh at one time with the gear 36.

With the parts in the position shown in -Fig. 6 the gear 41 is operating as a driving gear and the gear 36 and drum 30 are being rotated in the direction of the arrow shown in this figure, but if a reversal of the direction of movement of said gear 36 and drum is desired, then the shaft 42 is shifted to bring the gear 40 into mesh with the gear '36.

By this arrangement the direction of rotation of the gear 36 can be reversed and at the same time movement of the shaft 42 in the same direction is maintained. This shaft 42 is operated by crank arms 44 or other suitable devices which may be termed the operating members for the drum.

In order to lock the gears 40 and 41 in their shifted positions a latch member 45 is provided, best shown in Fig. 9, and this member is formed with a stem 46 mounted within a suitable lug or bearing 47 on the plate 33 and the acting end of said latch is grooved as at 47 to allow it to partially embrace the shaft 42. The latch as shown is pivotally mounted and can be thrown from one side to the other. Its operation will be readily understood by referring to Fig. 6, in which figure it is shown as being disposed between one of the lugs 43 and the inner face of the gear 40, thus locking this gear out of mesh with the gear 36 and holding the gear 41 in mesh with thegear 36. With the latch in this position a sliding movement of the shaft 42 is impossible and hence the locking action above referred to is es-' tablished.

In order to revolve the mast about the boom I provide a rack surface 49, best shown in Figs. 3, 5, and 6, and by referring to Fig. 3 it will be seen that the rack is fixedly attached to a ring or collar 50 surrounding the mast 11 and locked to such collar by a pin 50, as shown in Fig. 3, or otherwise. Said ring may be said in fact to be a part and parcel of the mast itself. A stem 51 is revolubly mounted within a sleeve 52 which is a part of the plate 33 and on one end of the stem 51 is a handle 53 and on the other end a pinion 54 meshing with the gear 49, thus the stem 51, pinion 54, and handles 53, are adapted to revolve in unison with the revolutionary movements of the booms since they are all connected to the plate 33 and the plate 33 in turn is connected to the ring 24 to which the booms are attached.

By revolving the handle 53 the pinion 54 will revolve and ride over the surface of the rack 49 thus causing the plate 33 with all parts carried thereby, together with the ring 24 and the booms 14 and 15, to be revolved about the mast. By this method of revolving the booms it is obvious that the booms can be swung to any position desired and in an accurate manner. The danger of giving too great or too little swinging movement to the booms is eliminated because of the fact that the pinion 54 and rack 49 will cotiperate in a manner to enable the operator to easily control the distance of movement of the boom. In order to lock the booms against revolution while the loads are being raised and lowered, I' provide a split ring 55 secured to the plate 33 and said split ring is drawn into engagement or loosened from engagement with the mast or a portion affixed to the mast through the instrumentalities of an eccentrically pivoted lever 56.

From the foregoing description it will be seen that there is provided a drum, a dog and ratchet control for the drum, a means for reversing the direction of rotation of a drum, a means for locking the driving mechanism for the drum in position, a means for operating the drum, means for revolving the booms about the mast and means for locking the booms against revolution about the mast, which means are all collected and arranged in close proximity to one another, thus enabling the person operating the crank arm 44 to easily, readily and quickly control all of the movements necessary to operate the derrick and in fact these mechanisms above listed are so compactly and conveniently arranged with respect to one another that they may be all carried upon a single casting of the nature of the casting 33 if so desired. The plate 33 can be readily removed from the ring 24 and the ring 24 can in turn be slipped off from the mast 11, so that the entire derrick structure can be taken apart and easily packed for storing or hauling from place to place.

The operation will be readily understood from the foregoing description, but briefly is as follows. Assuming the parts to be in the position shown in Fig. 1, and assuming that the empty wheelbarrow there shown is to be lowered and a loaded wheelbarrow pulled up, the operator will grasp one of the cranks 44 and rotate it, which will retate the shaft 42, the pinion 41, pinion 36 and drum 30, thus moving that portion of the cable depending from the sheave 29 upward and lowering that portion of the cable depending from the sheave 28. While this is being done the dog 39 will be in engage ment with the teeth of the ratchet 35 to prevent any backward slipping of the drum in case the operator should lose control of the crank 44. During this operation the looking ring 55 is preferably in locking position so as to prevent any revolutionary movement of the booms about the mast at this time, which will be highly undesirable owing to the swaying that would be incident to the raising and lowering of the load, due to the operator exerting a pull upon the handle 44, which is located to one side of the mast, that would be likely to turn or swing the booms about the mast, by his actions, if the same were not locked. After the load has been raised the desired height the lock 55 is loosened by movement of the lever 56 and the handle 53 is turned to swing the boom into the position desired to deliver the load. After this has been done the latch 45 is moved out of locking position, the shaft 42 shifted and the gear 40 brought into mesh with the gear 36. The dog 39 is thrown over and the direction of rotation of the drum is reversed, although the crank 44 continues to be turned in the same direction, the empty barrow or receptacle is thus lowered and the full barrow on the other side raised, thus carrying out the operation previously described except that the direction of the drum is of course reversed. It will thus be seen that the derrick is entirely capable of being operated by a single person without any inconvenience or danger.

shown in Fig. 1, a cross brace 60 is provided .Which is connected by suitable meanseither to the cross bars 16 ofthe booms,

or to a sheave frame 61, shown in Figs. 1

' 5 and 2; This sheave framecomprises an ex- 7 tended portion (32, to which are attached the 7 center ends of thebars 16 and 180i the booms, and is formed With a frame portion 63in; which is mounted asheave 28. This V single" casting therefore serves the function of amounting for the sheaVes,-a frame for connecting the outer'ends of the top and [diagonally disposed portions of the boom 1 and further if desired'serv'esas an attaching means for the cross brace-'60. Y 1

Iclaim: e

1. An attachment for derricks of the Wheelbarrow type, comprising a member having a central portion adapted to be 20 revolublysecured to the upper end of a -mast, companion arm-like members ar ranged one to each side of the central portion of said member and extending outward in divergent relation to one another, and

' eompanionarm-like members arranged on 'each side of the central portion of said member and extending outward in divergent relation to OIIGitIlOtllGl', and adapted to re celve the inner ends of booms, said member 'beingformed' with companion openings, one lymg to the rear of each of said arms and extending parallel to the arm with which it 1s assoclated, and a sheave mountlng ad- *jacent each of said openings, substantially as described.

M. J. SASGEN.

Witnesses WM. P. BOND,

EPHRAIM BANNING.

Gopisbf this patent may be obtained for five cents each, by addressing the Commissioner of Patents, i Washington, D. 0.

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