US1339253A - Hoisting apparatus and controlling means therefor - Google Patents

Description

c. ZETTERLUND.

HOISTING APPARATUS AND CONTROLLING MEANS THEREFOR.

APPLICATION FILED NOV. 24, I919.

1,339,253. Patented y 4, 1920.

2 SHEETS-SHEET I. -iq

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/ HOISTING APPARATUS AND CONTROLLING MEANS THEREFOR. 1,339,253.

APPLICATION FILED NOV. 24, 1919.

- Patented May 4, 1920.

2 SHEETSSHEET 2- UNITED STATES PATENT OFFICE.

CARL ZETTERLUND, or CHICAGO, rumors.

HOISTING APPARATUS AND CONTROLLING MEANS THEREFOR.

Application filed November 24, 1919. Serial No. 310,090.

To all whom it may concern:

Be it known that I, CARL ZETTERLUND, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Hoisting Apparatus and Controlling Means Therefor, of which the following is a specification;

This invention relates to improvements in a hoisting apparatus and means for controlling the operation of the parts thereof, of a type which is more particularly intended for use in coi'iveying building material, such as, brick, stone, mortar and the like, from one floor to another thereof, in the construction or alteration of buildings, and'it consists in certain peculiarities of the construction, novel arrangement, combination and operation of the various parts thereof, as will be hereinafter more fully set forth and specifically claimed.

The principal object of the invention is to provide an apparatus of the above mentioned general character, which shall be of such construction and arrangement of its parts as to be readily erected or installed on one of the floors (preferably the ground floor) of a building, and so located with respect to the upper floor or floors, as to en able material of the desired kind, to be con-' veyed thereby from'one floor to another.

A further object is'to provide simple and efficient means for controlling the operation of the apparatus, preferably from the point of delivery of the material.

Numerous other objects and advantages of the invention will be set forth in the following description and explanation.

In the accompanying drawings, which serve to illustrate an embodiment of the invention- Figure 1 is a top plan view of a hoisting apparatus and controlling means therefor embodying one form of the invention.

Fig. 2 is a side view of the apparatus showing the uprights which support the tackle-block for the carriers and provide tracks or rails for the rollers on said carriers, shortened for the convenience of illustration. V

Fig. 3 is an enlarged view partly in section and partly in elevation taken on line 3-3 of Fig. looking in the direction indicated by the arrows, and illustrating one form of the tackle-block and the means for locking and releasing the same.

Specification of Letters Patent.

Fig. 4 is a detached plan .view of the locking bolt for saidblock.

Fig. 5 is a front face view of the apparatus. Y Y i Fig. 6 is a similar view of a modified form of the tackle-block showing it mounted on the upper part of the supporting uprights,

and

Fig. 7 is a plan sectional view taken on line 7-7 of Fig. 2.

Like numerals of'reference refer to corresponding parts throughout the different views of the drawings. v

The numeral 10 designates a fragment of the floor of a building, on which is mounted and secured thereto a base 11 which has a centrally disposed rectangular or box-like upward extension 12in which extension the lower ends of a pair of spaced apart up rights 13 are located, as is clearly shown in Figs. 2, 5 and? of the drawings. The up right members 13 may be made of any suit able length and material, but by preference are of sufficient length to extend from the ground floor, or one of the floors of a building through a suitable opening 14 in the next floor 15 abovethe floor on which the base of the apparatus is mounted, see Fig. 5 of the drawings. In this view it will be seen and understood that the uprights 13 extend sufiiciently above the floor 15 to enable the carriers to be raised through the opening 1 1 without interference with the tackle-block which is mounted on the upper portion of said uprights.

In order to steady the uprights and. to prevent lateral movement thereof, a brace 16 is extended between them and secured to the floor 15 at each side of the opening 14 therein. This braceis provided with an opening 17 for the passage of a pair of cables used for the purpose to be presently explained. Located between the upper portions of the uprights 13, and. detachably secured thereto by means of screw bolts 18 is the offset portion 19 of the upright standard 20 which is provided at its upper end with a forwardly extended hook 21 to engage an eye 22 swiveled or otherwise secured on the upper portion of the hanger 23 which is forked as shown and has located between its prongs a grooved block or pulley 24: mounted on a shaft 25 journaled in the lower portions of the prongs of the hanger.

The pulley or block 24 is provided on its face opposite the standard 20 with a series of pits or depressions 26 arranged concentrically around the shaft 25 and are for the engagement with a locking and releasing bolt 27 which has its inner end beveled as at 28 on one side and the opposite side of its inner end flat or straight as at 29, see Fig. 4 of'the drawings. This locking bolt is located for rotation in a tubular extension 30 provided on the lower portion of a link 31 which is pivotally mounted on the shaft 25 of the pulley 24L inwardly of the front prong of the hanger 23 and is loosely connected at its upper end to a depending arm 32 of a brake-shoe which has a down wardly extended channel 3% .in its upper portion.

As is clearly shown in Fig. 3 of the drawings, the shoe 33 is pivotally mounted on a rod 35 which is tranversely located in vertical slots 36 in the upper portion of the hanger'23. Located in the channel 3st of the shoe and supported on the rod is a block 37 of wood or other suitable material used for contacting with the cable 38 which passes over the block or pulley 24 and is attached at its ends to the bails of the carriers for the material.

By this arrangement it is apparent that the block 37 carried by the brakeshoe will be brought into contact with the cable 38 so as to create pressure thereon and thus retard the movement of the carriers, through the engagement of the bolt 27 with the pulley 24 which engagement of said parts will cause the link 31 to move the shoe downwardly. As shown in Figs. 3 and l of the drawings, the bolt 27 is provided in its outer portion with a transverse opening 39 in which is slidably located a handle 4-0 which has at each of its ends an eye ll through which are passed cables-42 and 43 which extend downwardly and forwardly between the uprights l3 and through the opening l7 in the brace 16 when the same is used. These cables also extend around a pulley 4-1; mounted on a shaft 45 transversely journaled on the base 11 of the apparatus. The shaft 45 has journaled thereon near each ofits ends a pulley 4-6 over which are passed cables L7 and 48 which are suitably con nected at one of their ends to the lower portion of the carriers 4:9 and for the material; The carriers 49 and 50 are by preference similar in constri'lction and as shown are mounted. on opposite faces of the uprights 13. Each of the carriers may be made of any suitable size, form and material and consists of abase or floor 51 having an upright me'inber 52 onits side adjacent to the uprights 13 which upright and base are connected together by a bail 53 located transversely of the carrier and at about the midde thereof. ,Each of the uprights 52 of each of the carriers isprovided with a pair of grooved rollers5i located on each side of the uprights 13 in such a way that said uprights will fit in the grooves of said rollers and thus act as guiding rails ortracks therefor. V

Transversely journaled on a suitable support rearwardly of the uprights 13 but near the same, is a driven shaft 55 which has mounted thereon near one of its ends a drum 56 and near its other end a drum 57 each of which are by preference grooved as shown. Each of the drums 56 and 57 has around its hub a clutch face 58 for engagenent with clutches 59 slidably mounted on the shaft 55 outwardly of the drums.

Mounted on the shaft 55 between thefdrums 56 and 57 is a worm gear 60 which meshes with a worm 61 on the drive shaft 62 of an engine 63 which may be of the ordinary gasolene engine type, or any other kind, and is suitably mounted on the floor 10 rearwardly of the driven shaft 7 Each of the clutches 59 is provided with a loosely encircling band 6 f from each of which is downwardly extended an arm 65, see Figs. 2 and 5 of the drawings. Pivotally mounted for horizontal movement in front of the shaft 55 and near each end thereof is a lever 66 each of which has three arms 67, 68, and 69 extended radially, or substantially so, from the pivot of the lever. Each of the arms 67 is provided with a slot 79 for the reception of the lower ends of the depending arms of the clutches. Each of the arms 68 of said levers is provided at its forward or free end with an upwardly extended bracket 71 on which are journaled one above the other a pair of grooved rollers 72 which are for the guidance of the cables 47 and -et8 which are extended between the rollers of each pair and are secured at their ends to the drums on the driven shaft, thus it will be understood that the cables 47 and 48 are connected at one of their ends to the carriers and from thence are passed downwardly around the pulleys 46 on the shaft 4-5 at the base of the apparatus and are extended from said pulleys between the rollers 72 and from thence to the drums on the driven shaft.

In Figs. 1 and 2 of the drawings it will be seen and understood that each of the cables 47 and 48 is provided between the pair of rollers 72 between which it passes and the pulley d6 over which it travels, with a knot or enlargement 73 which knots or enlargements are employed to contact with the rollers 72 on the passage of the cables rearwardly they are wound on the drums, thus causing the lever 66 to be alternately and automatically turned so as to throw the clutches 59 out of engagement with the clutch faces 58 of the drums. In order to cause the clutches 59 to again engage their respective. clutch faces 58 the pair'of cables 42 and i3 are secured atone of their ends a tackle-block mounted on the upper por tion thereof, a cable engaging said block and depending on each side of said support, a carrier connected to each end said cable and each having guiding means engaging said support, a driven shaft mounted near the base of the support, means to drive said shaft, a pair of drums loosely mounted on said shaft and each having a clutch fa clutches slidably mounted on said shaft to engage the clutch faces of the drums and to alternately fix them to said shaft, a band loosely encircling each of said clutches and each band having an arm projected therefrom, a lever having at least a pair of oppositely extended arms and pivotally supported near each of said clutches, one of the arms of each of said levers having a slot therein engaging the arm of the band adjacent thereto, a pair of rollers journaled one above the other on the other arm of each of said levers, cables connecting the carriers and drums in pairs and each of said cables extended between the rollers on said arms of said levers and provided with an enlargement to contact with said rollers.

In an apparatus of the class described, the combination with an upright support, of

a tackle-block mounted on the upper por-' fix them to said shaft, a band loosely en- CllCllIlgeach of said clutches and each band having an arm projected therefrom, a lever having three arms extended therefrom and pivotally supported near each of said clutches, one of the arms of each of said levers having a slot therein engaging the arm of the band adjacent thereto, a pair of rollers journaled one above the other on another arm of each of said levers, cables c0nnecting the carriers and drums in pairs and each of said cables extended between the rollers on said arn'is of saidlevers and provided with an enlargement to contact with said rollers, and a cable connected at one. of its ends to the third arm of each ofsaid leve s and operatively at its other end to the tackle-block for controlling its movement. 7 I

7,. A device of the class'described, including in combination a suitably supported hange a pulley or block journaled thereon and having in one of its faces a plurality of pits arranged concentrically with respect to its journal, a tubular member extended laterally from said hanger, a spring pressed locking bolt located in said tubular member and having one side of its inner end beveled and the other side thereof straight, a handle slidably mounted on said locking bolt and having an eye at each of its ends, a cable extended through each of said eyes and connected to movable parts at their ends opposite those adjacent the eyes.

In testimony whereof, I have hereunto set my hand at Chicago, Illinois, on this, the th day of November, 1919.

CARL ZETTERLUND.

to the arms 69 of the clutch operating levers, which cables are extended around the pulley 44 and from thence upwardly between the uprights 13 and through the opening 17 in the brace 16 for said uprights and from thence upwardly to the handle 40 on the locking bolt 27 and secured in the eyes 41 of said handle.

By this arrangement, it is apparent that the proper cable can be reached by an operator stationed on the floor at which the delivery of the material is made, when by pulling on the same the arm 69 of the clutch operating lever to which said cable is secured will be moved in the proper direction to throw the clutch it controls into engagement with the clutch face on the drum adjacent thereto, thus fixing the drum on the driven shaft so that in its rotation said drum will wind thereon the cable connecting it and one of the carriers, thus lowering said carrier and elevating the other one. As the cable 38 which supports the carriers is extended over the block or pulley 24 it is evi dent that in the rotation of said pulley the locking bolt 27 will co-act therewith in a manner somewhat similar to a pawl with a ratchet and that but little resistance to the movement of the pulley 24 will be offered when the beveled portion 28 of the bolt is presented in the opposite direction from the rotation of the pulley, but when the straight or flat side 29 of said bolt is presented in said direction, the pulley will be locked against rotation. This change of the position of the bolt 27 can be effected through the instrumentality of the cables 42 and 43 as is obvious. To hold the locking bolt 27 normally in engagement with the pulley 24 a coil spring 74 is coiled around the tubular extension 30 and fixed at one of its ends to the link 31 and connected at its other end to the arm 40 on said bolt.

In Fig. 6 of the drawings I have shown a modification in the construction of the support and controlling means for the block or pulley 24, which consists in omitting the links ill, 32 and brake-shoe 34, and in placing the locking bolt 27 in a tubular extension 30 lo cated on the hanger 23 above the shaft 25 on which said pulley is mounted. In this modification the cables 42 and may be connected before to the eyes 41 of the handle 40.

Having thus fully described my invention, what I claim as new and desire to secure by Letters Patent isl. In an apparatus of the class described, the combination with an upright support, of a tackle-block mounted on the upper portion thereof, a cable engaging said block and depending on each side of said support, a carrier connected to each end of said cable, a pair of drums suitably journaled near the .base of the support, means to drive said drums, each of said drums having a clutch face, clutches mounted to engage the clutch faces of the drums and to alternately fix them on their shaft, cables connecting the carriers and drums, means operated by said cables to alternately throw the clutches out of engagement with the drums, and means connected to the last named means for placing the clutches into engagement with the drums.

2. In an apparatus of the class described, the combination with an upright support, of a tackle-block mounted on the upperportion thereof, a cable engaging said block and depending on each side of said support, a carrier connected to each end of said cable, a pair of drums suitably journaled near the base of the support, means to drive said drums, each of said drums having a clutch face, clutchesmounted to engage the clutch faces of the drums and to alternately is. them for rotation, cables connecting the cal riers and drums, means operated bysaid cables to alternately throw the clutches out of engagement with the drums, 1d a pair of cables-connected to the last named means for placing the clutches into engagement with the drums and operatively connected to the tackle-block for controlling its move ment.

In an. apparatus ofthe class described, the combination with an upright support, of u. tackle-block mounted on the upper portion thereof, a cable engaging said bloc I and de pending on each side of said support, a carrier connected to each end of said cable and each having guiding means engaging said support, a driven shaft mounted near the base of the support, means to drive said shaft, a pair of drums loosely mountedon said shaft and each having a clutch'facc, clutches slidably mounted on said shaft to engage the clutch faces of the drums and to alternately fix them to said shaft, cables connecting the carriers and drums in pairs, means operated by said cables to throw the clutches out of enga ement with the drums, and means to throw the clutches into engagement with the drums.

4. In an apparatus of the class described, the combination with an upright support, of a tackle-block mounted on the upper portion thereof, a cable engaging said block and de pending on each side of said support, a carrier connected to each end of said cable, a pair of drums journaled near' the base of the support, means to drive said drums, each of said drums having a clutch face, clutches mounted to engage the clutch faces of the drums and to alternately fix them for rotation, cables connecting the carriers and drums in pairs, and means operated by said cables to alternately throw the clutches out of engagement withthe drums.

w 5. In an apparatus of the class described, the combination with an upright support, of

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