US1470663A - Elevator conveyer - Google Patents

Description

an m, 1923. 1,470,663

R. K. BARNETT ELEVATOR CONVEYER Filed Sept. 9, 1920 2 Sheets-Sheet 1 //v i/E/VTOR ROBERT M. 5A HNETT.

Oct 16 I923.

R. K. BARNETT ELEVATOR YCONVEYER Filed sa 9,

1920 2 Sheets-Sheet 3 STATES EOBER'I KNOX' BARNETT, OF YHILADELPHIA, PENNSYLVANIA,

EIJEVATOR CONVEYER.

Application filed september a, 1920. Serial no." 409,045.

To all whom it mayconoermn Be it known that 1,. ROB RT KNOX BAB- NETT, a citizen of the United States, residing in Philadelphia, Pennsylvania, have invented Elevator Conveyers, 'of which the following is a specification.

This invention relates to elevating conveyers which include automatic devices for causin discharge or delivery of the articles carried, a relativelysimp'le, and substantial means whereby the contents of a tray, bucket or other conveying element shall be caused to (shifted by said elements to permit of their passage and thereafter automatically, re-

turned to their normal positions in which they can receive the contents of the convey ing elements, if these should be'discharged.

Another object of my invention is. to provide novel means for tripping the conveying elements or load carriers of an elevator conveyer, together with a novel form and mounting of receiving structure for the articles delivered from said carr1ers;the 1nvention contemplating-also a noveldevice in which,

for controlling from a distance the action of the tri ping means.

These'o jects and other advantageous ends I attain as hereinafter set forth, reference being had to the accompanying drawings,

Figs. 1 and 2 are respectively a vertical section and a front elevation to some extent diagrammatic, illustrating an elevator conveyer made in accordance with my invention;

fin accordance with my inventionaand Fig. 5 is, a diagrammatic yiew ofa modiq" "i' ficationof my invention, illustrating a com;

pingcams from'a distance.

binatioli of part-s fo controlling the trip f one of my objects being to provide Fig. '3 is a horizontal section on the line 33, Fi'g. 1; v

l'Big. 4'is a perspective View on" a scale .larger than that of Figs. 1 to 3, illustrating the detail construction of one of the conveying trays and areceiving trough with (-ertainlof their associated parts, constructed In the above drawings, 11 represent two parallel endless chains which are suspended from and actuated by a pair of sprocket wheels 22 mounted on a shaft 3 driven from an electric motor t or other suitable source of ower. Said sprockets with the motor an their associated parts are preferably mounted on-a frame work 5 at the top or upper part of the building or other structure in which the elevator is mounted, and in the present instance I have shown such a-structure as having three floors 6, 7 and 8. I

Adjacent the lowest floor the chains 1-.-1 pass around two sets of idler sprockets or guide pulleys 9 andlQ' whereby their direction is changed from vertical to horizontal,

and there is also an adjustable pair of bottom sprockets 11 for one end of the horizontal runs of the two chains. counted on and carried by the two chains 11 are a suitable number of conveying elements 12 in the form of trays, buckets or carriers pivot'ally supported so as to be capable of being swung out of their normal positions and caused to discharge their contents. I

A loading platform 13 or equivalent structure is arranged over the upper of the horizontal runs of the chainl-l, and the elevator shaft or well has at opposite sides vertically extending tracks or guides 14 for the chains; Said shaft in addition is preferably provided with enclosing walls 1 5-15 and a central vertically extending partition or frame 16 whereby the two vertical runs of chain with their ascending and descending carriers are separated and the said carriers incidentally prevented from tipping except at such points as the walls and partitions are or ma be cut away.

Each 0 the trays or conveying elements 12 is provided with a pair of'projecting members in the form of arms 17, extending in opposite directionsfrom each of its sides adjacent the. pivots connecting it to or suspending it from the two chains 1-1, andan one formof my invention I provide pairs of tripping cams'18'which. may be bolted or otherwise rigidly fixed to the; guides14 ad- 'j'acent openings into the elevator shaft,

whereby the projecting arms 17 of each tray arecngaged and the 'latter'causedto swing on its pivots into such a position as to cause fitsload to be -discharged by gravity. These pairs'of tripping cams 18 are so positioned relative to the floors 6 or 7 and to theopenings in thewall of the elevator; shaft as topermit of the mounting under them on said floor a package or load-receiving platform 19 havin a receiving extension p-ivotally connecte -to it as by a shaft or spindle 21,. and extending into the elevator shaft or well in such position as to be engaged by the conve mg elements 12 as these move upwardly.

ach of said extensions 20 has-arms 22 projecting under the body of the receiving platform 19 and normally engaging a pair of-abutments 23 so placed as to normally hold the extension in :an inclined position with its top surfacewsubstantially in the plane of the rep or inclined surface of the body. of the receiving platform 19.- Said extensions are thus each free to be swung upwardly about their spindles 21..as aXes in order 'to permit of the passageof successive conveyer elements or carriers 12 without causing the latter to be swung on'their'piw ots. Springs 24 are connected between the arms 22 and the adjacent parts of the body "of the platform 19, so that after being dislaced from-their normal positions shown in Fig. 4, the platform extensions are returned to and maintained in such positions.

The tripping cams of that pair which it is desired shall act upon'the carriers to cause delivery of their contents at any particular i floor are arranged as shown in Flg. 4, at such positions on the guide tracks 14 that each carrier is permitted to pass the adjacent extension 20 before itsarms 17 are acted on by of the articles bei riers before the p atform extension 20 has said cams. There will thus be no. possibility delivered from any carreturned into such a position as ,to receive the same and permit of their sliding onto the main portion of the receiving platform or chute 19., I

" In that form of my invention shown\ in block 27 pivoted to said casting ping arms 17' of the carriers or conveying elements. Holes are formed in each of sa'i castings 26 for the reception of a pin 25 which may be passed through either of two holes in its particular cam block to retain, it

either in position to engagethe carrier arms when this is desired, or to retain it in such I position that it will not engage said arms.

Under conditions of operation, thepair of chains with theirconiveying elements or trays 12 are driven by the motor 4 and'artiple are deliver 'cles to be convgg'ed to the floor 7 for examfrom the platform 13 onto said carriers as these are moved by said chains through their upper horizontal falling into the elevator chute after delivrun. Upon reaching the extension 20 of the first receiving platform which is located on the floor 7, each carrier engages and I swings said extension up and outwardly without being alfected thereby. Immediate- 1y after the passageof said carrier, gravity and the springs 24 return the extension to its normal position in which it projects into the elevator well orcasingr Thereupon the arms 17 of the carrier come into engagement with the blocks of the tripping cams18 adjacent the opening in the elevator shaft and, by

swinging said carrier on'its supporting pivots, causes the article thereon to be delivered first to the extension 20 and then to the re-. ceiving platform or chute 19 from which it.

falls onto the floor 7. M

After passing out of engagement with this first pair of tripping cams, the carrier resumes its normal position and c'ontiues to move upwardly with the chains to which it is attached, thereafter similarly engaging and swinging theextension 20 of the receiving'platform 19- of the floor 6. Inasmuch however as theblocks of the tripping cams adjacent this second receiving platform are intheir outer or inoperative positions, there is no swinging of the carrier on its p vots,

and after those portions of the chains to which it is attached pass over the top sprockets 2 it moves downin the descending portion of the elevator shaft.

If'desired, chutes'or platforms 30 may be provided at each of'the floors 6 and 7 ad'- jacent the descending run of the elevator so as to permit of articles being delivered to the carriers as they pass downwardly therein andafterward conveyed to and discharged on some other floor by the means above described.

I Under certain conditions I may provide means for controlling the positions of the tripping'cams 18 from a distance, and for this purpose I mayemploy a tripping block.

connected to the movable core 31 of an electromagnetic winding or solenoid 32-. (Fig. 5). I

By means of a spring 33 the tripping cam block is normally. maintained out of the path of the carrier arms 17 but when by the energization of a suitable electric circuit connected to said winding, the latter is energized, the core 31 is drawn. into such positlon asto project the block, causing it to be struck by the arms 17 with a'resultin'g tipping or swinging of the carriers connecte thereto and the discharge of the article thereon.

By the above described arrangement of pa'rtsfnot onl am I enabled to determine the 'point at w ich thenrticles carried by the conveyer elements shall be discharged, but by providing. the receiving platforms or chutes made as described, I prevent the possibility of any of the articles accidentally ery from their treys and cause them to be tension normally projecting into the path discharged and finall come to rest at vsome of said elements and movable thereby to perdistance away from t e elevator. mit their passage; with a cam adjustable at 10 I claim:--- will into and out of the path of movement 5 The combination in an elevator conveyer of said eonveying elements for tripping of e series of pivotally mounted conveying them after the have assedsaid extension.

elements; a, receiving member having an ex- ROB RT N OX BARNETT.

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