US1275241A - Hoisting apparatus. - Google Patents

Description

H.V S. GARDNER.

HolsTlNG APPARATUS.

KK A APPLICATION FILED JAN. 20. 1916. Y l ,275,24 1 Patented Aug. 13, 1918.

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H. S. GARDNER.

HOISTING APPARATUS.

AP'PLlcATVloN FILED 1AN.20. 1916. 1

1,275,241. Patented Aug. 13, 1918;

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APPLICATION FILED JAN. 20. 1916.

Patented Aug. 13, 1918'.

SSHEETS-SHEET 3 y1,275,241., @Ichi WITNESSES ymm www( Y parts in the position occupiedduringy the delivery ofthe material; Fig. 5 is a front 40 -i ing or other structure in any suitable man- UNITED srA'rEsrArENr oEEIcE.

HOWARD s. eARnnEmoE EAST ORANGE, NEW JERSEY.

.y i,Application filed January 20, 1916. Serial No. 73,111. 'i

To .all whom t may concern."

. Be it known that I, HOWARD S. GARDNER, a citizen of the United States, and resident of East Orange, county of Essex, Stateof New Jersey, have invented certain new and useful Improvements infHoisting Apparatus, of which the following-is a specification. My `invention relates to hoisting apparatus adapted more particularly for use in building operations and construction work and has for its object to provide a simple and eiicient apparatus whereby concrete, mortar, sand, cinders,-grout and the like may be readily delivered at different floors or at various levels in maximum quantities witha minimum ofl labor. Other more specific objects of my improvement will appear from the description hereinafter and the features of novelty will be pointed out in theappended claims.

In the accompanying drawings which illustrate an example of my improvement Figure 1 is a sectionalelevation ofa building in the course of Vconstruction showing my apparatus in use; Fig. 2 is a similar View Y looking at right vangles to'F ig. 1; Fig. 3 is a detail side elevation on anvenlarged scale of the bucket forming part of my apparatus showing theparts, in one position; Fig. 4 is a similar view in section showing the elevation of the `bucket or receptacle; Fig. 6 is a plan view; and Figs. 7A Vandj8 are detail sections on an enlarged scale taken respectively on the lines 7s-7 and 8--8 of Fig. 5.V As shown in the drawings the apparatus comprises a-pair of parallel vertical 4guideways 10 which are arranged in the buildner and are of any well known type adapted either to be built Iup in sections to keep pace with the construction or to be installed in the structure after the latter has reached its intended height. The said guideways 10 extend from a point Lbelow the lowermost part of the structure, as for instance a pit 11 formed in the cellar floor of a building to the uppermost point at-which material is to be delivered and serve as guides'for a bucket or receptacle 12 which is provided with grooves or channelmembers 13 arranged to coperate with saidV guideways for maintaining the bucket 12 in its ,intended vertical or other path. The said `:faorsillivcr AEBARATUS.

Specification of Letters Patent. l Patented Aug'r1l3, 1918,

bucketf12 may :be raised and lowered or otherwise manipulated in any suitable manner, as for Vinstance by means of a cable 14 havingits one end connected, for instance, to a frame 12 in which the bucket is mounted and passing over suitable pulleys 15 to Y.

the drum ofan engine lor motor which suppliesthe powerwhereby `said bucket 12 is operated. The bucket 12 is preferably provided with a bottom 16, which inclines downwardly from the rear wall toward an exit openingl7 formed in the front wall of said bucketv as ,shownin Fig. .4. This exit opening l172 is normally closed by means of a gate 18 depending, for instance, lfrom 'a shaft 19 rotatably mounted in suitable bearings,19,a on the bucketv 12 and preferably maintained in its closedv position by means ofa hook or dog 20 having a beveled face 21.and locatedat-one end of a lever 22.

The latter is pivotally connected at 23 with the-bucket in such a mannerthat the rearwardly extending portion ofv said lever will overbalance the forwardly extending portion thereof so that the .hookV or dog 20, after an vactuation of said lever v.to release the gate 19, will valways automatically return toits operative position. The lever 22 may be swung onY its pivot 23 in any suitable manneras for instance by means of a chain 24 having its one end secured to the rear end-fof the lever 23 and itsother end suitably attached to the bucket 12. In the preferred arrangement a plate 25 is secured either directly to the gate 18 at its lower edge or to an angle iron 18@L located at said lower edge, said plate 25 being detachably secured, for instance, by bolts 25al and serving as a wearing'surface for the hook 20. is the plate 25 or hook 20 becomes worn through use anew plate 25 may be vsubstituted. or a suitable wedge or shim may be introduced between the wornvplate 25 and the angle iron-18a or gate 18 as the case may be to take up wear and to at all times provide for thefproper securing of the gate 18 in itsfullyclosedposition. In order to protect the shaft 19 and bearings 19a from becoming clogged with any part ofthe contents ofthe bucket 12 as said contents are discharged and at othertimes, the bucket is provided with aprotecting member .12b which depends downwardly beyond the upper edgeof the discharge opening 17 and bridges the space between said upperedge and the vupper edge of the` gate 1 8 ,and prel vents any of the said contents from contacting with either the shaft 19 or the bear: ings 19a as will be readily apparent. The gate 18 may simply be permitted to open under the influence of the load after being released from the restraining eiect of the dog or, as is preferred, the operation of said gate 18 may be controlled by suitable means. As shown in the example this means com` prises a link or links 18b pivotally connected at 19b with a crank 19c secured to or forming part of the pivot shaft or the like 19 and having the opposite end connected at 19d with a crank 19e secured to or forming part of a shaft 19 journaled in bearings 19g located at the top of the bucket 12. The shaft 19I may be rocked in any suitable manner as by means of a handle or-lever 19h having its end rigidly secured to said shaft 19f.

In addition to the above the -bucket 12 carries a chute 26 preferably having side f walls 27, said chute being pivotally connected with the bucket 12 so as to be capable of a swinging pendulum-like movement relatively thereto, by means of rods or arms 28 secured to said side walls 27 and depending` from a shaft 29 journaled in bearings 30 located .on the upper edges of-the side walls of said bucket 12. As shown in Fig. 3 of the illustrated example this chute 26 in its normal inoperative position is entirely inside of the front wall of said bucket so as not to interfere with the vertical moveg ments thereof and is capable of being swung forwardly of said bucket in operative rclation to the exit opening 17 when it is desired to discharge the contents of said bucket. In order that said chute 26 may be maintained in. its inoperative position and manipulated in the desired manner I have provided links 31 having one end pivotally connected at 32 with the arms 28 'and their other ends pivotally connected vrespectively with a crank` 33 secured to or forming part of a shaft 34 and with an operating lever 35 rigidly connected with said shaft 34, the latter being journaled in suitable bearings 34a carried by the bucket 12. The operating lever 35 extends upwardly in close relation to a side of the bucket 12 and above the top thereof and is preferably provided with a latch 36 maintained in and returned to its normal position by means of a spring 37 and actuated by means of a pivoted finger piece 38. This latch 36 cooperates with recesses 39 and 40 formed for instance in the upper edge of av segment 41 secured to a side wall of the bucket 12 to maintain the lever 35 in its intended position, whereby the chute `26 is locked either in its inoperative or in its operative position. In practice Iprefer to provide preferably 'removable hoppers or bins 42 located at the various levels or on the different floors at which material from the bucket 12 is to be dischargedk although this is not absolutely necessary and said 'bucket may simply be caused to discharge When it its lowermost position ready to Y be loaded, the bucket rests upon a support 44'located in thepit 11 and provided with inclined members 45 with which the bottom 16 is adapted to come into surface.` contact,

transverse projection 46 being `located in said pit in .front of said support so as to engage the lower edge of the gate 18 when the bucket 12 is fully lowered. With this arrangement the bucketl 12 is firmly supported during loading and the pivots or hinges 19 as well as the dog 2() are relieved from any undue shocks and strains which may accompany the loading process. In order to prevent the dog 20 from being accidentally disengaged 'from the gate 18 when the. bucket is in loading position in the pit 11, I prefer'to provide a. leaf spring 47 projecting from the transverse projection 46 into the path of the hook or dog 20. This spring 47 thus engages the latter and is placed under tension thereby when the bucket is fully lowered and thus exerts a pressure against said dog or hook 20, tending to maintain it aga-inst unintentional dislocation while the bucket is being loaded or remains fully in the pit 11. Y

' When in position in the pit 11 the open top of the bucket V12 is substantially level with for instance the cellar floor and may thus be readily and quickly loaded to capacity or any part thereof for instance with concrete from a concrete mixer 48. After the bucket 12 has'beenloaded it is raised by the cable 14 to the level at which it is desired to discharge the load or to the particular hopper or bin into which said load is to be delivered. W'hen the lbucket Vhas been brought to a standstill a workman first releases the latch 36 from the recess 39 by ac-A tuating the finger piece 38 and then swings the lever 35 fromthe position shown in full lines in Fig. 2 toward the rear until the latch 36 snaps into the recess 40. `This actuation of said lever 35 causes a rotation of the shaft 34 so .that a push is concurrently exerted on both links 31 which push is communicated to the arms 28 and thus swings the chute l246 from its normal inoperative position shown in Fig. 3 to its operative positionV indicated in Fig. 4. In this position the Chute 26 extends for instance over the free end of one of the auxiliary chutes 43 in advance of the f exit opening 17 so as to bridge theyspace which normally exists .between the end of the said auxiliary chute 43 and the kbucket 412. In this position of the parts the latch 36 as before stated is located in the recess40 soV -24 to swing the lever 22 on its pivotk 23 and to thus move the dog or hook 20 to an inoperative position below the gate 18. If the weight of the load itself does not swing the gate 18 to its open position or it is'desired to control the extent of the opening thereof the operator now exerts an vupward pressure on the handle 19h to rock the shaft 191' in` its bearings 19g. and through thefcrank 19c and thus produces a downward push on the links 18h. This downward push will be communi* cated to the crank 19c thereby causing a rocking of the pivot shaft 19 and'swinging the gate 18 for instance to the open position shown in Fig. 4 which now permits the contents of the bucket 12 to pass into the chutesA 26 and 43 to the particular bin or hopper 42 combined therewith. By graduating the actuation of the handle 19h the extent to which the gate 18 is opened may be accurately gaged so that the speed andv volume of the discharge may be efficiently controlled to produce 'the most effective results with each different material. Owing to the fact that the pivot 19 is located close to the dog 2O ak maximum leverage is obtained in the handle 19h so that said dog is readily disengaged from the gate even though the latter is forced against the said dog by the pressure of the load in the bucket. At the same time with the described arrangement the dog will always automatically'return to a normal position so that the gate 18 upon being brought to its closed position will engage the beveled face 2l and depress said dog which, the moment said ate reaches its nal closed position, will snap ehind the said gate and again lock it in said closed position.v

After the bucket has been emptied and the gate 18 has been closed the latch- 36 is first released from the recess 40 and the lever 35 is swung toward the front of the bucket 12 and thus swings the chute 26 back to its normal inoperative position in which it is again locked through the cooperation of the latch 36 and recess 39.A The bucket 12 may now again be lowered into the pit 11 and again loaded. During the discharge of the contents of the bucket 12 the side walls 27 of the chute 26 and the corresponding walls of one of the auxiliary chutes 43 will prevent the load or the said contents from spreading sidewise and will efficiently guide the entire mass toward the particular hopper, bin or other point of deposit. It will beI evident that if desired, the pivot 23. may be replaced by a shaft on whichmore than one lever 22 with its dog 20. ismounted for the purpose of engaging the gate 18 at more than one point to lock itl in its closed position.

, With my improved construction the vibrationof the loaded bucket during its ascent vwill pack the load down'toward the angle formed by the bottom 16 and the gate 18 so that a complete and clean discharge or unloading is automatically hadeach time the gate isV opened and the necessity for scraping the bucket is absolutely avoided.

It will be seen that in-my improved construction which is extremely simple the op erative parts yare all carried by the bucket and that the latter itself is construced so as to have`a large capacity and that all the elements may be controlled and operated with a minimum of attendants. During loading the bucket is also efficiently supported and relieved of all strains and shocks tending to inJure same or disarrange the parts thereof. The apparatus may be effectively used for distributing concrete, mortar, cinders, grout or any other material and may be successively loaded with different materials without any trouble owing to the fact that each load is fully discharged each time in'a clean and eiHcient manner.

Various changes in the specific form shown and described may-'be madewithin the scope of the'claim's without departing from the spirit of my invention.

I claim: f" l. In `a hoisting apparatus, a bucket having an exit opening, a movable door for said opening, a chute normally located beneath said bucket,l means pivotally connected with said bucket for freely suspending said chute therefrom and means connected with said suspending means whereby said chute is swung pendulum-like from beneath said bucket to an 'operative position in advance of said exit opening and back again. 2. Ina hoisting apparatus, a bucket havlng an exit opening, a movable door for said openlng, a chute, arms having one end pivotally connected with said bucket'anol extending downwardly l at opposite sides thereof, said arms having their other ends attached to said chute whereby the latter is pivotally suspended on said bucket, a rock shaft, links connected with said rock shaft and with said arms whereby said chute is oscillated pendulum-like to and from an operative position in advance of said exit opening, and a handle operatively connected with said shaft whereby the latter is rocked.

3. In a hoisting apparatus, a bucket having an exit opening, a movable door for said opening, a chute, arms pivotally connected at one end. with said bucket and extending downwardly at opposite sides thereof, said arms having their other ends attached to said 'chute whereby the latter is pivot-ally suspended on said bucket, a rock shaft, links connected with said rock shaft and with said arms wherebyV said chute is oscillated pendulum-like to and from an operative position iii-.advance oit said exit opening, a handle operatively connected with said shaft whereby the latter is rocked and means for locking said chute in either of its positions.l

4. The .combination of upright parallel guides, auxiliary chutes located at different levels adjacent to said guides, a bucket adapted to rtravel lengthwise of said guides and having an exit opening, a chute normally located beneath said bucket, means pivotally connected with said bucket for freely suspending said chute therefrom, means whereby said chute is swung pendulum-like from beneath said bucket over the end of an auxiliary chute to bridge the space between said exit opening and said auxiliary chute, a. movable door 'for closing said exit opening, and means for con trolling the movements of said door.

5. The combination'ot parallel guides, a bucket adapted to travel lengthwise thereof and provided with Van exit opening, a movable door Jfor closing said opening, means for locking said door in its closed position and Vmeans at the lower ends of said guides ltor engaging said locking means whereby the latter is prevented from being unintenliona'lly releasedl while said bucket is in its lowered position. f l

(3.. rlhe combina-tion of parallel guides, a bucket ad apied to `travel. lengthwise thereof and provided with an exit opening, a movable door for closing said opening, means for locking. said door in its closed position and a spring at the lower endsof said guides adapted to be engaged and placed undei tension by said locking means whereby the latter is prevented from lbeing unintentionally released while said bucket is inV its lowered position.

7. ln a hoisting apparatus, ,a bucket having an exit opening, a movable door for said opening, a chute normally located beneath said bucket, meansv pivotal'ly connected with said bucket for freely suspending said chute therefrom, and means whereby said chuteis swung pendulum-like rombeneath,Y said bucket to an operative position in advance of said exit opening and back again.

8. ln a hoisting*apparatus,- a bucket hav-- ing an exit opening7 amovable door tor said opening, a. chute normally locatedlbeneath said bucket, means pivotally connected with said bucket for freely suspending said. chute therefrom, and means whereby said chute is swung on its pivotal connections laterally .or said bucket to an operative position in advance of said exit openingl and back again.

In testimony whereof I have hereunto set my hand.

HOWARD s. GARDNER.

Copier of this patent may be obtained Afor-ve cents each, by addressing ,the Commissioner at Patents,

u Washington, G.

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